JP2013233612A - Sharpener for cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutter sharpening device having a simple structure, with which a grinding element can be uniformly applied to a side surface of a blade edge.SOLUTION: A cutter sharpening device includes a bearing 11 provided with a rotary shaft 8 rotatably, and a grinding element 5 provided at a center of the rotary shaft 8 and having a pair of conical surfaces 6, 7. Grinding surfaces 6A, 7B are formed on the pair of conical surfaces 6, 7, the bearing 11 supports the rotary shaft 8 to be movable vertically, the rotary shaft 8 is provided to be axially movable with respect to bearings 11, 11 on both sides, and synthetic resin-made urging means 81, 81 are provided between the grinding element 5 and the bearings 11, 11. Further, as a cutter guided in a front-back direction to intersect, the rotary shaft 8 with a lid body is sharpened while the grinding surfaces 6A, 7A are uniformly pressed to the side surface of the cutter by the urging means 81, uniform grinding can be performed, and a washer or the like becomes unnecessary.

Description

  The present invention relates to a sharpener for a blade that sharpens a blade such as a knife or knife with a grindstone.

  Conventionally, as this kind, there are a frame, a grindstone provided on the frame in a rotatable manner, having a truncated cone surface shape and forming an angle with each other, and a sharpening blade during grinding. A knife sharpener provided with a guide member that steers the blade so as to press against both polishing surfaces and makes contact with the polishing surface, and a gutter provided on the frame and surrounding a lower portion of the grindstone (for example, Patent Document 1) Has been proposed.

  In the sharpening tool as described above, by moving back and forth obliquely with the cutter with respect to the axial direction of the grindstone having a truncated conical polishing surface, both the polishing surfaces hit the cutter and both side surfaces, and crush the cutting edge as in the conventional case. Thus, the polishing can be effectively performed as compared with the sharpening. However, even with this type of sharpener, there is a problem that, when sharpening with a blade, frictional heat is generated and the blade is dulled, or polishing scraps of the blade enter the eyes of the grindstone and cause clogging. And although the knife sharpener is provided with a ridge, the above-described problems of generation of frictional heat and clogging cannot be sufficiently solved. In addition, when clogging or dirt is caused by polishing scraps, there has been a problem that, since the grindstone is conventionally fixedly provided on the frame, the cleaning is difficult.

  A sharpener for blades has been proposed in consideration of such a problem. In this sharpener for blades, a frame having a gripping part and a polishing part integrally, and a frame horizontally provided rotatably on the polishing part. A grindstone having a rotating shaft inclined with respect to the length direction of the shaft, a grindstone having a truncated conical surface shape provided at the center of the rotating shaft and forming an angle with each other; A sharpening tool for a blade, comprising: a guide member that steers the blade so that the blade presses against both polishing surfaces and contacts the both polishing surfaces; and a flange provided on the polishing portion and surrounding a lower portion of the grindstone. In the above, the height of the flange portion is formed higher than the lower intersection of the polishing surface (for example, Patent Document 2), a polishing element composed of a pair of roll bodies having a conical surface, and a sharpening blade during cutting Steer the blade so that it presses against the surface. A sharpener for a single-edged blade having a guide member brought into contact with both conical surfaces, wherein the one conical surface is formed on a polished surface, and the other conical surface is formed on a smooth and hard non-polished surface. A single-edged sharpener for a blade (for example, Patent Document 3), or a bearing that supports the rotary shaft so that the rotary shaft can move up and down and includes a biasing means that biases the rotary shaft upward. A thing (for example, patent document 4) is proposed.

Japanese Patent Laid-Open No. 62-181860 Utility Model Registration No. 3007312 Utility Model Registration No. 3010973 Utility Model Registration No. 3128435

  In Patent Document 4, variation in force for pressing the blade edge against the conical surface can be prevented by the biasing means including a coil spring, and uniform polishing can be performed.

  By the way, in a conventional sharpener for a blade, a lid that covers the polishing portion is used as a guide member, and this lid is provided with a slit that guides the blade corresponding to the polishing element. The blade is steered by the slit when it moves back and forth, and the blade is pressed against both polishing surfaces of the polishing element, but the guiding slit is wider than the thickness of the blade, If the cutting edge does not uniformly strike the polishing element and used by an unfamiliar person, the polishing state may vary.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a sharpening device capable of applying a polishing element uniformly to a side surface of a cutting edge with a simple structure.

  An apparatus for sharpening blades according to a first aspect of the present invention includes a rotary shaft horizontally provided on a frame, a bearing provided on the frame so that the rotary shaft can be rotated, and a center provided on the center of the rotary shaft. A polishing element having a conical surface shape and having a pair of conical surfaces that form an angle with each other, and a blade that is inclined with respect to the length direction of the rotating shaft so that the blade is pressed against the conical surfaces during the sharpening process. A sharpening tool for cutting the blade and contacting the two conical surfaces with each other, and a sharpening device for a blade in which at least one of the pair of conical surfaces is formed on a polished surface. And an urging means made of synthetic resin is provided between the polishing element and the bearing.

  The blade sharpening device according to claim 2 is characterized in that the biasing means includes a ring-shaped bearing side sliding portion provided on the bearing side and a ring-shaped element side sliding provided on the polishing element side. And an elastic connecting part that connects the bearing side sliding part and the element side sliding part.

  In the blade sharpening device according to a third aspect of the present invention, the elastic connecting portion is formed in a spiral shape, and both ends of the elastic connecting portion are connected to the element side sliding portion and the bearing side sliding portion. Characterize.

  In the blade sharpening device according to a fourth aspect of the present invention, the biasing means is an injection-molded product, and includes a pair of the elastic connecting portions, and the pair of elastic connecting portions are arranged so as not to overlap in a plan view. It is characterized by being.

  According to the first aspect of the present invention, the urging means is brought into contact with the blade that is guided in the front-rear direction by crossing the rotation axis by the guide member in a state where the polishing surface is pressed substantially uniformly against the side surface of the blade. Since it is sharpened, uniform polishing can be performed. Further, since the lateral biasing means provided between the polishing element and the bearing is made of synthetic resin, the frictional resistance is smaller than that of metal, and the rotating shaft can be smoothly rotated. Become.

  According to the invention of claim 2, since the bearing side sliding portion slides toward the bearing side, a washer is unnecessary, and the bearing side sliding portion slides toward the polishing element side, so that friction with the polishing element side is reduced. It becomes small and it can urge | bias a horizontal direction by elastically deforming an elastic connection part.

  According to the invention of claim 3, since the elastic connecting portion is helical, it can be externally mounted on the rotary shaft, and when the distance between the element side sliding portion and the bearing side sliding portion is narrowed, the helical elastic connection The portion is elastically deformed and can be urged in the lateral direction by its elastic restoring force.

  According to invention of Claim 4, since an elastic connection part does not overlap in planar view, it can manufacture simply using the molding frame which opens a pair of connection member up and down.

It is sectional drawing which shows the attachment state of the grinding | polishing element which shows Example 1 of this invention, FIG. 1 (A) is a state before pressing a cutter, FIG. 1 (B) is pressing a cutter which is not shown in figure, and is polishing element. Indicates a lowered state. It is a side view of a polishing element unit same as the above. FIG. 3A is a plan view of the polishing element unit, and FIG. 3B is a plan view of the polishing element with a washer in cross section. It is a top view explaining a usage method same as the above. It is a perspective view of a bearing and a longitudinal biasing means same as the above. It is a whole top view same as the above. FIG. 3 is an exploded perspective view of the main part of the polishing element unit and the unit cradle. It is sectional drawing of an attachment / detachment means same as the above. It is a perspective view of a biasing means same as the above. It is a side view of a biasing means same as the above. It is a perspective view of a biasing means same as the above. It is a top view of a biasing means same as the above. It is a side view of a biasing means same as the above. It is sectional drawing which shows the attachment state of the polishing element which shows Example 2 of this invention. FIG. 3 is an exploded perspective view of the main part of the polishing element unit and the unit cradle. It is a top view explaining the usage method which shows Example 3 of this invention. It is a whole top view which shows Example 4 of this invention. It is sectional drawing of the blade edge | tip of a single bladed cutter same as the above. It is a perspective view of the unit stand provided in the grinding | polishing part which shows Example 5 of this invention. It is sectional drawing which shows the attachment state of the polishing element which shows Example 6 of this invention. It is a side view of a polishing element unit same as the above. It is a whole top view same as the above. It is a whole side view same as the above. FIG. 24 is a cross-sectional view taken along line AA of FIG. It is a top view of the grinding | polishing part which shows Example 7 of this invention. It is a top view of the state which attached the cover body same as the above. It is a longitudinal cross-sectional view of the principal part same as the above. It is a perspective view of a cover body same as the above. It is a side view of the grinding | polishing element unit which shows a reference example.

  Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims of the utility model registration. In addition, all of the configurations described below are not necessarily essential requirements of the present invention. In each embodiment, by using a new sharpener for blades different from the conventional one, an unprecedented sharpener for blades is obtained, and the sharpener for blades is described respectively.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 13 show a first embodiment of the present invention, in which a frame 1 made of a synthetic resin has a grip portion 2 that is long in the left-right direction and a polishing portion provided at an end portion in the longitudinal direction of the grip portion 2. 3, and a separate lid 4 serving as a guide member is detachably provided on the upper portion of the polishing portion 3. A polishing element 5 made of alumina ceramics or the like is disposed in the polishing portion 3, and this polishing element 5 has a shape in which the lower parts of two top-like grindstones are combined and formed at the center. The conical surfaces 6 and 7 having a truncated cone shape are formed in a substantially V shape with an angle to each other, and further, a rotating shaft 8 is integrally provided on both sides, and the rotating shaft 8 is provided on the polishing portion 3 of the frame 1. The rotary shaft 8 is provided so as to be rotatable, and the rotary shaft 8 is inclined with respect to the length direction of the frame 1. In this example, the two conical surfaces 6 and 7 are the polishing surfaces 6A and 7A.

  Further, the rotary shaft 8 is made of a synthetic resin, and has large diameter portions 8A and 8A provided on both sides of the polishing element 5, and end portions provided on the end portions of the large diameter portions 8A and 8A via a step portion 9. The small-diameter portions 10 and 10 are integrally provided, and the small-diameter portions 10 and 10 on both sides are provided with bearings 11 and 11 that are detachably locked. The bearing 11 is made of synthetic resin. These bearings 11 and 11 on both sides are erected on the left and right of the bottom plate portion 12T of the mounting base body 12 with a space therebetween.

  As shown in FIG. 5, the bearing 11 includes a central plate portion 13 and side plate portions 14, 14 on both sides, and has a substantially plane U shape, and an upper portion is opened at the center of the central plate portion 13. The bearing groove portion 15 is formed in the vertical direction, and bearing arm portions 16 and 16 are provided on both upper sides of the bearing groove portion 15 so that the upper portion is elastically opened and closed, and the pair of bearing arms is disposed above the bearing groove portion 15. Curved locking portions 17, 17 projecting inward from the opposing inner edges of the portions 16, 16 are formed, and the interval W between these locking portions 17, 17 is slightly wider than the diameter dimension of the small diameter portion 10 Narrowly formed. A curved corner portion 13W is formed between the central plate portion 13 and the side plate portion 14.

  A vertical groove 21 is formed below the bearing groove 15 for mounting a stainless steel coil spring 20 serving as a vertical biasing means. The longitudinal groove portion 21 is formed by a recess recessed outward in the center of the central plate portion 13, and has an opening 22 that opens over the entire length in the center, and a curved portion 23 is formed on the outside. The depth from the inner surface of the central plate portion 13 to the bottom surface of the curved portion 23 corresponds to the diameter of the coil spring 20. In addition, the bottom part of the vertical groove part 21 is obstruct | occluded by the baseplate part 21T. In addition, a space is provided between the small-diameter portion 10 and the vertical groove portion 21 while the rotary shaft 8 is pivotally supported by the bearing 11, and the rotary shaft 8 is lowered along the vertical groove portion 21 by this distance. During this descent, the coil spring 20 is compressed. The coil spring 20 is made of stainless steel or the like.

  Further, a sliding member 24 that slides on the small-diameter portion 10 is mounted on the upper portion of the coil spring 20. The sliding member 24 includes a press-fit portion 24A that press-fits on the upper portion of the coil spring 20, and an upper portion. And a sliding portion 24B that slides on the peripheral surface of the small-diameter portion 10.

  Therefore, when the polishing element 5 is positioned above between the bearings 11 and 11 on both sides and the small diameter portion 10 is press-fitted into the longitudinal groove portion 21, the space between the bearing arm portions 16 and 16 is opened, and the space between the locking portions 17 and 17 is opened. When passing, the small-diameter portion 10 is prevented from coming off, and the small-diameter portion 10 is biased upward by the coil spring 20.

  As shown in FIGS. 9 to 13, the sharpener for blades includes a biasing means 81 made of synthetic resin as a transverse member, and this biasing means 81 is made of polyacetal, for example, DURACON (Duracon, Polyplastics). Etc.).

  The biasing means 81 is provided with ring portions 82 and 82 'on both sides in the length direction, the ring portion 82 disposed on the bearing 11 side is a bearing side sliding portion, and the ring portion disposed on the polishing element 5 side. 82 'is an element side sliding part. The ring portions 82 and 82 'are formed with flat surfaces 82H and 82H on both sides. Further, the inner peripheral surface 82N and the outer peripheral surface 82G of the ring portions 82 and 82 'are concentric. The length L of the biasing means 81 is shorter than the outer diameter D of the ring portions 82 and 82 ′.

  Further, the ring portions 82 and 82 ′ on both sides are connected to each other with a pair of elastic connecting portions 83 and 83 at an interval. The elastic connecting portion 83 has a substantially square cross section, and both ends 83T and 83T of the elastic connecting portion 83 having a spiral shape are connected to the flat surface 82H inside the ring portions 82 and 82 ', and the plane shown in FIG. As shown in the figure, the pair of elastic connecting portions 83, 83 are arranged so as not to overlap each other in plan view. As shown in FIGS. 10 and 11, the end 83T of the elastic connecting portion 83 is connected to the inner peripheral surface 82N side by a flat surface 82H inside the ring portions 82 and 82 ', and the end portion thereof. 83T is thin and has a substantially triangular shape. Further, as shown in FIG. 10 and the like, the elastic connecting portion 83 before elastic deformation is located between the inner peripheral surface 82N and the outer peripheral surface 82G of the ring portions 82 and 82 ′.

  Specifically, the end portions 83T and 83T of the elastic connecting portion 83 have a spiral angle θR of 120 ° to 150 ° with respect to the connecting portions 83 and 83, and an angle of 135 ° in FIG. The end portions 83T and 83T of the connecting portions 83 and 83 are connected to the ring portions 82 and 82 'at a position forming an angle θ of 180 degrees. In FIG. 10, the upper left and right end portions 83T and 83T are of one elastic connecting portion 83, and the lower left and right end portions 83T and 83T are of the other elastic connecting portion 83. The positions of the end portions 83T and 83T of the elastic connecting portions 83 and 83 are in contrast. When the angle θR is less than 120 degrees, the elastic connecting portion 83 is shortened and it is difficult to obtain sufficient elastic force. On the other hand, when the angle θR exceeds 150 degrees, the end portions 83T and 83T are close to each other and are difficult to mold. Therefore, the above range is preferable.

  Further, in the elastic connecting portion 83, the inclination angle θT of the end portion 83T is set smaller than the inclination angle θM of the intermediate portion 83M with respect to the axial direction of the biasing means 81. Accordingly, when the urging means 81 is contracted so as to narrow the ring portions 82 and 82 ', the elastic connecting portion 83 is elastically deformed, in particular, bends on the end portion 82T side, and the ring portions 82 and 82 are bent by the elastic restoring force. The force to expand the gap is obtained efficiently.

  Further, the ring portion 82 which is the element side sliding portion is provided with thin spacers 84 and 84A on the inner peripheral surface 82N thereof, and these spacers 84 and 84A are provided on the ring portion 82 as shown in FIG. In FIG. 10, the upper spacer 84 is positioned at the center of the upper elastic coupling portion 83, and the lower spacer 84 </ b> A is positioned at the center of the lower elastic coupling portion 83. The distance S between the spacers 84 and 84A is slightly narrower than the diameter of the large-diameter portion 8A of the rotating shaft 8, and the diameter of the inner peripheral surface 82N is slightly larger than the diameter of the large-diameter portion 8A. Therefore, in the ring portion 82 which is the element side sliding portion, the spacers 84 and 84 are in pressure contact with the large diameter portion 8A of the rotating shaft 8, whereby the urging means 81 rotates together with the rotating shaft 8, and the bearing side sliding portion. The ring part 82 ′ slides on the bearing 11. As shown in FIG. 1 and the like, in the initial state, the ring portion 82 ′ is located in the small diameter portion 10.

  Further, the flat surfaces 82H and 82H inside the ring portions 82 and 82 'are respectively provided with projections 85 and 85 at corresponding positions, and the projection 85 of the ring portion 82 is provided integrally with the spacer 84. ing. The upper and lower portions of the protrusion 85 are located on the outer peripheral surface 82G and the inner peripheral surface 82N, and the tip of the protrusion 85 is formed in a curved surface. Therefore, when the biasing means 81 is reduced in the state where it is mounted on the rotating shaft 8, the ring portions 82 and 82 'approach each other, and the protrusions 85 and 85 abut against the elastic connecting portion 83, so that the biasing means is further increased. 81 never shrinks.

  Therefore, as shown in FIG. 12, if the symbol P is a party line of a molding die (not shown), the molding die is opened at the party line P, thereby combining a plurality of spiral elastic connecting portions 83, 83. The resin biasing means 81 can be easily manufactured by injection molding using a molding die. The inner peripheral surface 82N of the ring portions 82 and 82 'is formed by using a slide mold that moves in the direction intersecting with the mold opening direction.

  Then, by inserting the large-diameter portion 8A into the biasing means 81, the ring portion 82 on the center side of the biasing means 81, 81 is attached to the large-diameter portion 8A of the rotating shaft 8. The outer ring portions 82 ′ of the biasing means 81 are in pressure contact with the inner surface of the central plate portion 13 of the bearing 11. In the mounted state, the biasing means 81, 81 on both sides are in a slightly compressed state between the outer surfaces 6B, 7B, which are anti-polishing surfaces, and the bearings 11, 11, and further compresses from this mounted state. be able to.

  Further, as shown in FIG. 3, the interval h between the step portions 9 and 9 on both sides is slightly narrower than the interval H between the inner surfaces of the central plate portions 13 and 13 of the bearings 11 and 11 on both sides (h <H), The difference between the distance H and the distance h is about 0.5 to 3 mm, preferably about 1 to 2 mm. The biasing means 81, which is a lateral elastic member, has a larger spring constant than the coil spring 20 of the vertical biasing means, and both the coil spring 20 and the biasing means 81 are compression springs used in a compressed state.

  The mounting base body 12 is provided with a mounting cylinder portion 33 as a mounting portion for mounting the lower portion of the bearing 11 on both sides of the bottom plate portion 12T. The mounting cylinder portion 33 is a central plate portion 13 of the bearing 11. Corresponding to the side plate portions 14, 14, a mounting center plate portion 34 and mounting side plate portions 35, 35 are provided, and the outer edges of these mounting side plate portions 35, 35 are connected by a connecting plate portion 36. A curved corner portion 34W is formed between the mounting center plate portion 34 and the mounting side plate portion 35. Then, the coil spring 20 is moved in the circumferential direction and inserted into the longitudinal groove portion 21 from the opening 22 of the bearing 11, and in this state, the lower portion of the bearing 11 is inserted into the mounting cylinder portion 33, and if necessary. Secure by gluing.

  As a result, the center side of the opening 22 is closed by the mounting center plate 34. Instead of inserting the coil spring 20 into the longitudinal groove portion 21 from the longitudinal direction in this way, the coil spring 20 can be simply attached to the longitudinal groove portion 21 from the side, and the lower portion of the bearing 11 is attached to the attachment cylinder portion. By inserting it into 33, the opening 22 can be closed by the mounting central plate portion 34, and the coil spring 20 can be easily attached at the time of manufacture.

  Further, a cover body 41 is provided to cover the upper portion of the bearing 11 fixed to the bottom plate portion 12T. The cover body 41 includes side plate cover portions 42 and 42 that cover the side plate portions 14 and 14 of the bearing 11, a side plate cover portion 42, The upper cover part 43 that connects the upper edges of 42 and the connection cover part 44 that connects the outer edges of the side plate cover parts 42 and 42 are integrally formed, and the upper cover part 43 and the connection cover part 44 are formed continuously. ing.

  Then, the bearing body 41 is mounted so as to cover the upper portion of the bearing 11, and the side plate portions 14 and 14 are detachably fitted and fixed between the side cover portions 42 and 42. The cover body 41 is fixed to 11 by adhesion. The end of the rotating shaft 8 is covered with the fixed cover body 41. Further, the rotation shaft 8 is not detached from the bearing 11 by the cover body 41.

  Further, a side plate portion 38 as a latch receiving portion is provided between the lower portions of the side plate portions 14 and 14 of the bearings 11 and 11 on both sides.

  Then, the bearings 11 and 11 are attached to the mounting base body 12, the coil springs 20 and 20 are attached to the bearings 11 and 11, and the urging means 81 is attached to the rotating shaft 8. By assembling to the bearings 11, 11, the polishing element unit 51 is configured, and the polishing element unit 51 is replaceably attached as described later. In this case, the unit may be configured by attaching the cover body 41 to the polishing element unit 51 as necessary.

  The polishing section 3 is provided with a unit pedestal 52, and the polishing element unit 51 is detachably provided on the unit pedestal 52. The unit cradle 52 can be integrally formed with the polishing unit 3 when the frame 1 is molded. In this example, an example in which the unit cradle 52 configured separately is attached to the polishing unit 3 will be described.

  The unit cradle 52 includes a frame 53 into which the mounting base body 12 is fitted. The frame 53 is formed into a substantially rectangular shape by the long frame portions 53L and 53L and the short frame portions 53S and 53S. The flanges 54, 54 project outward from the short frame parts 53 S, 53 S on both sides in the longitudinal direction of the body 53, and through holes 54 A for attachment are formed in the flange 54. Further, a square frame-shaped corner frame portion 55 is provided on the four sides of the frame body 53 so as to project upward. The corner frame portion 55 is formed of a longitudinal wall portion 55L of the unit support 52 and a lateral wall portion. Integrated with 55S. A locking claw 56 serving as a locking portion for locking to the upper edge of the side plate portion 38 of the polishing element unit 51 is provided at the approximate center of the longitudinal frame portion 53L of the unit cradle 52. The claw portion 56 is provided with an oblique guide surface 56A at an upper portion thereof, and a locking surface 56B is provided at a lower portion of the guide surface 56A in a lateral direction. The engaging claw portion 56 and the side plate portion 38 constitute attachment / detachment means 58 for detachably attaching the polishing element unit 51 to the unit base 52.

  The unit cradle 52 is fixed to a predetermined position of the polishing unit 3 with screws 57 as fixing means. Specifically, the screws 57 are inserted into the through holes 54A, and the screws 57 are inserted into the bottom plate portion 3A of the polishing unit 3. And the both sides in the longitudinal direction of the unit cradle 52 are fixed to the bottom plate portion 3A. Note that this fixing may be performed by bonding or the like. Then, when the lower part of the polishing element unit 51 is fitted into the unit pedestal 52 from above, the lower part of the polishing element unit 51 hits the guide surfaces 56A and 56A, and the locking claws 56 and 56 on both sides open, and the polishing element unit 51 When the lower portion passes, the locking surface 56B is locked to the upper edge of the side plate portion 38, and the polishing element unit 51 is fixed to the polishing portion 3. The polishing element unit 51 is disposed obliquely with respect to the length direction of the polishing unit 3, and thereby the rotation shaft 8 is disposed obliquely with respect to the polishing element 5.

  The lid 4 as a guide member is provided with slits 62 for guiding the blade 61 corresponding to the polishing element 5, and these slits 62 are formed perpendicular to the length direction of the frame 1, thereby When the blade 61 is inserted into the blade 62 and moved back and forth, the blade 61 is steered by the slit 62, and the blade 61 is pressed against both the polishing surfaces 6A and 7A. In this example, the blade 61 is a double blade.

  A disc-shaped permanent magnet 63 is fixed to the center of the lower surface of the frame 1, and rubber sheets 64 and 64 as anti-slip members are fixed to the lower surface on one side and the other side of the frame 1. Yes.

  Next, to explain how to use the blade sharpener, holding the grip portion 2 and holding the frame 1, if it is on a metal table, the lower surface permanent magnet 63 is attracted and the frame 1 is fixed, Further, the rubber sheets 64, 64 prevent misalignment. In this state, when the blade 61 is inserted into the slit 62 and moved back and forth, the side surface of the blade 61 comes into contact with the polishing surfaces 6A and 7A and is sharpened. At this time, when the blade 61 is pressed against the polishing surfaces 6A and 7A and the polishing element 5 is pressed downward, the coil spring 20 pushes back the rotating shaft 8, and the side surface of the blade 61 moves up and down on the polishing surfaces 6A and 7A. Further, the polishing surface 6A is brought into contact with the blade 61 guided by the slit 62 on the side surface of the blade 61 by the urging means 81 and 81 mounted on the rotary shafts 8 and 8 with respect to the blade 61 guided by the slit 62. , 7A is contacted and sharpened in a substantially uniformly pressed state, so that uniform polishing can be performed. And a thin blade can be sharpened evenly.

  When the blade 61 is pressed against the polishing element 5 in this way, a force to push back the coil spring 20 is applied, and the polishing element 5 is positioned with respect to the blade 61 on the coil springs 31 and 31 on both sides. The force applied to the blade 61 can be made substantially uniform, a pan-cut knife with a corrugated cutting edge can be polished, and a fine ceramic blade can also be polished.

  Further, when the polishing element 5 is cleaned or replaced, if the gap between the locking claws 56 is increased, the polishing element unit 51 can be removed from the unit receiving base 52, and the polishing element 5 is removed in the removed state. After the cleaning, the new polishing element unit 51 can be reassembled or fixed to the unit base 52.

  Therefore, the conventional troublesome work of removing the polishing element 5 from the bearing, attaching the coil springs 20 and 31 again, and attaching the polishing element 5 is unnecessary, and the purchaser can easily perform cleaning and replacement. .

  Thus, in this embodiment, corresponding to claim 1, the rotating shaft 8 provided laterally on the polishing portion 3 of the frame 1, and the bearing 11 provided on the polishing portion 3 and provided with the rotating shaft 8 rotatably. A polishing element 5 provided with a pair of conical surfaces 6, 7 provided in the center of the rotary shaft 8, each having a truncated cone surface shape and forming an angle with each other, and with respect to the longitudinal direction of the rotary shaft 8 And a slit 62 as a guide portion that steers the blade 61 and contacts the both conical surfaces 6, 7 so that the blade 61 presses against both the conical surfaces 6, 7. In the blade sharpener having at least one of the polishing surfaces 6A and 7B formed on the polishing surfaces 6A and 7B, the rotary shaft 8 is provided so as to be axially movable with respect to the bearings 11 and 11 on both sides, and is the anti-polishing surface of the polishing element 5. Synthetic resin urging means 81, 81 are provided between the outer side surfaces 6B, 7B and the bearings 11, 11. Then, the blade 61 is guided in the front-rear direction across the rotary shaft 8 by the lid 4 in a state where the polishing surfaces 6A and 7A are pressed almost uniformly against the side surface of the blade 61 by the biasing means 81. Therefore, uniform polishing can be performed. Further, since the lateral biasing means 81 provided between the polishing element 5 and the bearing 11 is made of synthetic resin, the frictional resistance is smaller than that of metal, and the rotating shaft 8 can be smoothly rotated. It becomes possible.

  In this way, in this embodiment, corresponding to claim 2, the urging means 81 includes the ring portion 82 'as a ring-shaped bearing side sliding portion provided on the bearing 11 side, and the polishing element 5 side. A ring-shaped element side sliding portion provided in the ring portion 82 and an elastic connecting portion 83 for connecting the ring portions 82 and 82 ', so that the ring portion 82' slides toward the bearing 11 side. Since the washer is not required and the ring portion 82 slides toward the polishing element 5 side, friction with the polishing element 5 side is reduced, and the elastic connecting portion 83 is elastically deformed to be biased laterally. it can.

  Thus, in this embodiment, in correspondence with claim 3, the elastic connecting portion 83 is formed in a spiral shape, and both end portions 83T and 83T of the elastic connecting portion 83 are element side sliding portions. 82 is connected to the ring portion 82 ′ which is the bearing side sliding portion, and therefore the elastic connecting portion 83 is spiral, and can be externally mounted on the rotating shaft 8, and the ring portions 82 and 82 ′ on both sides can be externally mounted. When the interval is narrowed, the spiral elastic connecting portion 83 is elastically deformed and can be biased in the lateral direction by its elastic restoring force.

  Further, in this embodiment, corresponding to claim 4, the urging means 81 is an injection-molded product, and includes a pair of elastic connecting portions 83, 83. The pair of elastic connecting portions 83, 83 are Since it is arranged so that it does not overlap in a plan view, the elastic connecting portions 83, 83 do not overlap in a plan view, so it is easy to use a molding mold that opens the pair of elastic connecting portions 83, 83 up and down. Can be manufactured.

  Further, as an effect of the embodiment, since the elastic connecting portion 83 before elastic deformation is located between the inner peripheral surface 82N and the outer peripheral surface 82G of the ring portions 82 and 82 ', it can be easily mounted on the rotary shaft 8. Become. Furthermore, the elastic connecting portion 83 is bent on the end portion 82T side because the inclination angle θT of the end portion 83T is set smaller than the inclination angle θM of the intermediate portion 83M with respect to the axial direction of the biasing means 81, and its elastic restoring force Thus, a force for expanding the space between the ring portions 82 and 82 'can be obtained efficiently. Further, since the end 83T of the elastic connecting portion 83 is connected to the inner peripheral surface 82N side by the flat surface 82H inside the ring portions 82 and 82 ', the elastic connecting portion 83 protrudes outside in the contracted state. It becomes difficult.

  Further, hereinafter, as an effect on the embodiment, at least one of the pair of conical surfaces 6 and 7 is formed on the polished surfaces 6A and 7B, the bearing 11 supports the rotary shaft 8 so as to be movable up and down, and the rotary shaft 8 is directed upward In a sharpener for a blade provided with a coil spring 20 as a vertical biasing means for biasing, a rotary shaft 8 is provided so as to be movable in an axial direction with respect to bearings 11 and 11 on both sides, and an outer side which is an anti-polishing surface of the polishing element 5 is provided. Since the coil springs 31 and 31 which are transverse elastic members are provided between the side surfaces 6B and 7B and the bearings 11 and 11, when the blade 61 is pressed against the polishing surfaces 6A and 7A and the polishing element 5 is pressed down, the coil springs 20 pushes back the rotating shaft 8, the side surface of the blade 61 comes into contact with the polishing surfaces 6 A and 7 A in a state of being pressed substantially uniformly in the vertical direction, and is further guided by the lid 4 in the front-rear direction. In contrast, the side of the blade 61 is sharpened by the coil spring 31. Since the polished surfaces 6A and 7A are contacted and polished in a state of being pressed substantially uniformly, uniform polishing can be performed.

  Further, since both sides of the rotary shaft 8 are pivotally supported by the bearings 11, 11 on both sides, and the biasing means 81 is mounted on both sides of the rotary shaft 8, the biasing means 81, 81 mounted on both sides of the rotary shaft 8 The position of the polishing element 5 is adjusted according to the blade 61. Further, by attaching the urging means 81 to the rotating shaft 8, it can be easily incorporated.

  In addition, since the mounting base body 12 as the mounting member is provided with the bearings 11 and 11 on both sides and the mounting base body 12 is attached to the polishing portion 3, the polishing element unit 51 in which the rotating shaft 8 is assembled to the mounting base body 12 is provided. Can be attached to the polishing section 3, so that the attaching operation can be easily performed.

  In addition, since the mounting base body 12 serving as a mounting member is detachably provided on the polishing unit 3, the polishing element 5 is washed in a state where the polishing element unit 51 is removed from the polishing unit 3, and then reassembled or replaced. In this case, a new polishing element unit 51 can be fixed to the polishing unit 3.

  Further, since the mounting base body 12 is provided with mounting cylinder portions 33 as mounting portions for mounting the lower portion of the bearing 11 on both sides of the bottom plate portion 12T, the assembly of the bearing 11 to the mounting base body 12 is simplified. Can be done. Further, since the attaching element 58 is detachably attached to the unit base 52, the polishing element unit 51 can be attached to and detached from the polishing part 3. Further, a vertical groove portion 21 to which the coil spring 20 is attached is formed below the bearing groove portion 15, and this vertical groove portion 21 is constituted by a recess recessed outward at the center of the central plate portion 13, and at the center thereof. Since it has an opening 22 that is open over its entire length, the coil spring 20 can be moved in the circumferential direction and inserted into the longitudinal groove 21 from the opening 22 of the bearing 11, and the coil spring 20 can be easily attached to the bearing 11. Can be attached to.

  In addition, the end of the rotary shaft 8 is detachably locked to the bearing 11, and the bearing 11 is provided with a pair of bearing arm portions 16, 16 that open and close elastically in the polishing portion 3, and these bearing arms. A bearing groove 15 is formed between the portions 16 and 16 to support the end of the rotary shaft 8 so that the end of the rotary shaft 8 can move up and down and rotate. From the inner edges of the pair of bearing arm portions 16 and 16 to the upper portion of the bearing groove 15, respectively. Locking portions 17 and 17 projecting inward are formed, and the interval between the locking portions 17 and 17 is slightly narrower than the diameter of the small-diameter portion 10 that is the end of the rotating shaft 8, and is vertically attached. Since the coil spring 20 as a biasing means is disposed below the bearing groove 15, the small-diameter portion 10 of the rotating shaft 8 is inserted between the bearing arm portions 16 and 16 so as to be rotatably attached to the bearing groove 15 of the bearing 11. Assembling is easy after the coil spring 20 for urging the rotating shaft 8 is disposed below the bearing groove 15.

  Furthermore, since the small diameter portion 10 which is the end portion of the rotating shaft 8 is engaged with the bearing 11, the small diameter portion 10 abuts against the coil spring 20 and compresses the coil spring 20. Even when the blade 61 is applied and pushed down, the force that pushes the polishing element 5 upward by the coil spring 20 can be obtained.

  Further, since the unit cradle 52 is fixed to a predetermined position of the polishing unit 3 with screws 57 as fixing means, the polishing unit 3 is not limited to being made of synthetic resin, but can be made of metal or wood.

  14 to 15 show a second embodiment of the present invention, in which the same reference numerals are given to the same portions as those in the above-described embodiments, and detailed description thereof will be omitted. The blade sharpener of this example is formed between the bearings 11 on both sides and is formed with a flange portion 65 surrounding the lower portion of the polishing element 5, and this flange portion 65 is formed on the bottom plate portion 12T of the mounting base body 12. It protrudes in a cylindrical shape. Specifically, the upper end 34U of the central plate portion 34 and the upper end 38U of the side plate portion 38 are positioned above the lower portion of the polishing element 5, and the central plate portions 34, 34 on both sides and the side plate portions 38, 38 on both sides are located. The flange portion 65 is formed between the bottom plate portion 12T and the bottom plate portion 12T.

  Further, a locking groove portion 66 to which the locking claw portion 56 can be engaged and disengaged is formed in the lower part of the outer surface of the side plate portion 38, and this locking groove portion 66 is a locking receiving portion. The attaching / detaching means 58 is configured by the engaging claw portion 56 and the engaging groove portion 66.

  As described above, in this embodiment, the same operation and effect as in the first embodiment are obtained, and the flange portion 65 surrounding the lower portion of the polishing element 5 is provided on the mounting base body 12. The blade 61 can be polished while a part of the blade 61 is in contact with a liquid such as water or oil in the flange 65, and the liquid is used to cool the polishing element 5 and clean the polishing debris adhering to the polishing surfaces 6A and 7A. It can be performed.

  FIG. 16 shows a third embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-described embodiments, and detailed description thereof will be omitted. The blade sharpener of this example is provided with a flange portion 65A so as to surround the unit pedestal 52, and this flange portion 65A projects in a cylindrical shape on the bottom plate portion 3A of the polishing portion 3. Specifically, longitudinal bottom side plate parts 67L and 67L and short side side side plate parts 67S and 67S are projected from the bottom plate part 3A, and the upper ends of these side side plate parts 67L and 67L are the polishing element 5. Part of the polishing element 5 enters the liquid placed in the flange portion 65A.

  As described above, in this embodiment, the same operations and effects as the above-described embodiments are obtained.

  FIGS. 17 and 18 show a fourth embodiment of the present invention, in which the same reference numerals are given to the same portions as those in the above-described embodiments, and detailed description thereof is omitted. The sharpener for blades of this example is different from the first embodiment in the inclination direction of the rotary shaft 8. The blade 61A is a single-edged blade having an inclined surface 72 on one side of the cutting edge 71. The inclined surface 72 is applied to the polishing surface 6A, and the conical surface 7 against which the anti-inclined surface hits is a smooth and hard non-polishing surface 7H. Yes.

  In the polishing element 5, the member on the conical surface 6 side is made of alumina or silicon carbide ceramics, the conical surface 6 is formed on the polishing surface 6A, and the other conical surface made of a different material is used. The member 7 is made of silica-based porcelain ceramics, alumina-based fine ceramics, alumina-based new ceramics, or the like, and the conical surface 7 is formed as a smooth and hard non-polished surface 7H.

  As described above, in this embodiment, the same operations and effects as those of the above embodiments are achieved, and one of the conical surfaces 6 and 7 is the polishing surface 6A and the other is the non-polishing surface 7H. Can be sharpened.

  FIG. 19 shows a fifth embodiment of the present invention. The same reference numerals are given to the same parts as those of the above-described embodiments, and detailed description thereof will be omitted. In the blade sharpener of this example, the unit cradle 52 is not provided with a flange 54, and the unit cradle 52 without the flange 54 is formed integrally with the bottom plate 3A of the polishing section 3. .

  As described above, in this embodiment, the same operations and effects as those of the above-described embodiments are obtained, and since the unit receiving base 52 is integrally provided in the polishing portion 3, the polishing element unit 51 can be directly attached to and detached from the polishing portion 3. Can do.

  20 to 24 show a sixth embodiment of the present invention, in which the same reference numerals are given to the same parts as those of the above-described embodiments, and detailed description thereof will be omitted. In this example, the vertical biasing means is not used, and the bearing 11 is provided with a pair of bearing arm portions 115 and 115 projectingly provided on the bottom plate portion 3A of the polishing portion 3 and elastically opening and closing the upper portion thereof. A longitudinal bearing groove 116 is formed between the bearing arm portions 115 and 115 so as to support the small diameter portion 10 so that the small diameter portion 10 can move up and down and rotate. The pair of bearing arms is formed above the bearing groove portion 116. The engaging portions 117 and 117 projecting inward from the opposing inner edges of the portions 115 and 115 are formed, and the insertion guide portions 118 and 118 are formed between the inner edges of the engaging portions 117 and 17 in an inverted C shape. Provided, the lower ends of the insertion guide portions 118 and 118 are continuous with the bearing groove portion 116, and the interval W between the lower ends of the insertion guide portions 118 and 118 is slightly narrower than the diameter dimension of the small diameter portion 10. Become.

  Further, the frame 1 made of synthetic resin is formed by integrating a grip portion 2A that is long in the left-right direction and a polishing portion 3 provided at the end in the longitudinal direction of the grip portion 2. A separate lid 4A serving as a guide member is provided on the upper portion.

  Further, the polishing section 3 has a substantially semi-cylindrical lower case 152 having an upper opening 151. Corresponding to the lower case, the lid body 4A is also substantially semi-cylindrical, and the lid body 4A One side is pivotally attached to an upper edge 151A on one side of the upper opening 151 by a pivoting part 153, whereby the lid 4A is provided on the polishing part 3 so as to be openable and closable.

  As described above, in this embodiment, in the blade sharpener in which at least one of the pair of conical surfaces 6 and 7 is formed on the polished surfaces 6A and 7B, the rotary shaft 8 can be moved in the axial direction with respect to the bearings 11 and 11 on both sides. And urging means 81, 81 made of synthetic resin are provided between the outer surfaces 6B, 7B, which are anti-polishing surfaces of the polishing element 5, and the bearings 11, 11, so that the same functions and effects as those of the above embodiments are provided. Play.

  25 to 28 show a seventh embodiment of the present invention, in which the same reference numerals are given to the same parts as those of the above-described embodiments, and detailed description thereof is omitted. In this example, the frame 1A has a polishing portion 3 having no gripping portion and having a substantially rectangular shape, and side plate portions 90 are vertically provided on four sides of the bottom plate portion 3A of the polishing portion 3, and the bottom plate portion 3A. Is provided with a flat circular flange 65B at the center thereof, and bearings 11A and 11A projecting on both sides of the flange 65A, and the small diameter portion 10 is rotatable on the top of the bearing 11A. A bearing groove 15 is formed to be fitted to the. Further, the bearings 11 </ b> A and 11 </ b> A are arranged so that the rotation shaft 8 is inclined with respect to the length direction of the polishing portion 3. Further, the bottom portion of the flange portion 65B is positioned below the bottom plate portion 3A.

  In addition, through holes 91 for attachment are formed in four sides of the bottom plate portion 3A sandwiching the flange portion 65A, and are fixed to the attached portion (not shown) by fixing means (not shown) such as screws. The Specifically, the polishing portion 3 is attached and fixed by screwing a screw inserted through the through hole 91 into the attached portion. Examples of the attached portion include a synthetic resin case, a cutting board, and an upper surface of a system kitchen. Moreover, a permanent magnet may be used as the fixing means, and the permanent magnet may be fixed and used by being adsorbed to a metal or the like.

  The lid body 4A of this example is a transparent body, and has an upper plate portion 93 integrally on the upper side of the four side plate portions 92, 92, 92, 92, and a longitudinal side plate facing the upper plate portion 93. The slit 62 is formed across the portions 92 and 92. Moreover, the attachment / detachment means which attaches the cover body 4A to the grinding | polishing part 3 of the flame | frame 1A so that attachment or detachment is possible is provided. This attaching / detaching means has locking claw portions 94, 95 projecting downward from the lower side plate portions 92, 92 in the short direction, and the locking claw portions 94, 95 can be engaged and disengaged. Locking holes 96 and 97 as parts are formed in the bottom plate portion 3A. Similarly to the locking claw portion 56, the locking claw portions 94, 95 are provided with an oblique guide surface 56A at the lower portion thereof, and a locking surface 56B is formed laterally above the guide surface 56A. Is provided. Further, the locking claw portion 95 is formed in a bifurcated shape.

  Therefore, the polishing portion 3 is fixed to the attached portion, the lid 4A is attached and used, the attached portion is detached from the polishing portion 3, and the locking claws 94 and 95 are removed from the locking holes 96 and 97. The rotary shaft 8 can be removed from the bearings 11A and 11A and attached in reverse.

  As described above, in the present embodiment, the frame 1A included in the polishing unit 3, the rotary shaft 8 provided laterally on the polishing unit 3 and provided obliquely with respect to the length direction of the polishing unit 3, and the blade during grinding are both conical surfaces. And a lid 4A serving as a guide member that steers the cutter so as to press against the cone surfaces 6 and 7 and contacts the cone surfaces 6 and 7, and has at least one of the pair of cone surfaces 6 and 7 formed on a polished surface. In the sharpener, the rotary shaft 8 is provided so as to be axially movable with respect to the bearings 11A and 11A on both sides, and the urging means 81 made of synthetic resin is provided between the polishing element 5 and the bearing 11A. The same operations and effects as the embodiment are exhibited.

  Further, in this example, since the frame 1A is fixed to the attached portion by the fixing means 91A, the grip portion is not necessary.

[Reference example]
FIG. 29 shows a reference example of the present invention. The same reference numerals are given to the same parts as those of the above-described embodiments, and detailed description thereof will be omitted. In this example, a biasing means such as a coil spring 31 is provided as a lateral elastic member. The coil spring 31 is made of stainless steel or the like, and is externally mounted on the large-diameter portion 8A of the rotating shaft 8. A washer 32 made of synthetic resin or the like is disposed between the outer end of 31 and the bearing 11, and a small diameter portion 10 of the rotary shaft 8 is inserted into the insertion hole 32 </ b> A of the washer 32. The outer end of the coil spring 31 is in pressure contact, and the washer 32 is in pressure contact with the inner surface of the central plate portion 13 by this pressure contact. The insertion hole 32A is smaller than the large diameter portion 8A. In the mounted state, the coil springs 31 on both sides are in a slightly compressed state between the outer surfaces 6B and 7B, which are anti-polished surfaces, and the bearings 11 and 11, and further compression is performed from this mounted state. Can do.

  As described above, in this reference example, at least one of the pair of conical surfaces 6 and 7 is formed on the polished surfaces 6A and 7B, the bearing 11 supports the rotary shaft 8 so as to be movable up and down, and biases the rotary shaft 8 upward. In a blade sharpener equipped with a coil spring 20 as a longitudinal biasing means, a rotary shaft 8 is provided so as to be axially movable with respect to bearings 11 and 11 on both sides, and an outer surface 6B as an anti-polishing surface of the polishing element 5 is provided. Since the coil springs 31 and 31 that are transverse elastic members are provided between the bearing 7 and the bearings 11 and 11, the coil spring 20 rotates when the blade 61 is pressed against the polishing surfaces 6A and 7A and the polishing element 5 is pressed downward. The shaft 8 is pushed back, the side surface of the blade 61 contacts the polishing surfaces 6A and 7A in a state of being pressed substantially uniformly in the vertical direction, and further, the blade 61 is guided by the lid 4 in the front-rear direction. The polished surfaces 6A and 7 are formed on the side surface of the blade 61 by the coil spring 31. Since A is contacted and sharpened in a state where A is pressed substantially uniformly, uniform polishing can be performed.

  In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, the number of polishing elements provided in the polishing part may be two or more, and the inclination directions of two or more polishing elements may be aligned or may be provided in combination by changing the inclination direction.

DESCRIPTION OF SYMBOLS 1 Frame 2 Gripping part 3 Polishing part 3A Bottom plate part 4 Lid (guide member)
5 Polishing element 6 Conical surface 6A Polishing surface 6B Anti-polishing surface 7 Conical surface 7A Polishing surface 7B Anti-polishing surface 8 Rotating shaft
10 small diameter part
11 Bearing
12 Mounting base (Mounting member)
20 Coil spring (vertical biasing means)
32 washer
51 Abrasive element unit
52 Unit base
61 Cutlery
81 Energizing means
82 Ring part (element side sliding part)
82´ Ring part (bearing side sliding part)
83 Elastic connection

Claims (4)

A rotary shaft that is installed horizontally on the frame, a bearing that is provided on the frame and on which the rotary shaft is rotatably provided, and that is provided at the center of the rotary shaft and has a truncated cone surface shape and forms an angle with each other. A polishing element provided with a pair of conical surfaces, and the cutting tool which is obliquely arranged with respect to the length direction of the rotating shaft and steers the cutting tool so that the cutting tool presses the both conical surfaces. A sharpening device for a blade, comprising at least one of the pair of conical surfaces formed on a polishing surface, the rotation shaft being provided so as to be axially movable with respect to the bearings on both sides, and the polishing element A sharpener for blades, characterized in that a biasing means made of synthetic resin is provided between the bearing and the bearing. The biasing means includes a ring-shaped bearing-side sliding portion provided on the bearing side, a ring-shaped element-side sliding portion provided on the polishing element side, the bearing-side sliding portion and the element side The sharpener for blades according to claim 1, further comprising an elastic connecting portion that connects the sliding portions. The sharpener for a blade according to claim 2, wherein the elastic connecting portion is formed in a spiral shape, and both ends of the elastic connecting portion are connected to the element side sliding portion and the bearing side sliding portion. 4. The blade according to claim 3, wherein the biasing means is an injection-molded product and includes a pair of the elastic connecting portions, and the pair of elastic connecting portions are arranged so as not to overlap in a plan view. Sharpener.

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