CN113401686B - Paper feeding device and image forming apparatus - Google Patents

Paper feeding device and image forming apparatus Download PDF

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Publication number
CN113401686B
CN113401686B CN202010187314.2A CN202010187314A CN113401686B CN 113401686 B CN113401686 B CN 113401686B CN 202010187314 A CN202010187314 A CN 202010187314A CN 113401686 B CN113401686 B CN 113401686B
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China
Prior art keywords
paper
height
weight
information
sheet
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CN202010187314.2A
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Chinese (zh)
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CN113401686A (en
Inventor
黄水琴
王顺祥
薛继忠
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Konica Minolta Inc
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Konica Minolta Inc
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Priority to CN202010187314.2A priority Critical patent/CN113401686B/en
Publication of CN113401686A publication Critical patent/CN113401686A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H43/00—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6502—Supplying of sheet copy material; Cassettes therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

The present invention relates to a paper feeding device and an image forming apparatus, wherein the paper feeding device includes: the box body comprises a containing cavity; the paper placing box is positioned in the accommodating cavity, and the paper placing box can be moved out of the accommodating cavity by pulling the paper placing box; the regulating plate is positioned in the paper placing box, the position of the regulating plate in the paper placing box is movable, and the regulating plate is suitable for regulating paper; and the height limiting display part is suitable for displaying the maximum allowable height of the paper which can be placed in the paper placing box according to the position of the regulating plate. Therefore, the height limiting display part can accurately display the maximum allowable height of the paper in the paper box according to different paper types, prevent the paper in the paper box from being overloaded, and display the paper in the state that the paper box is moved out of the accommodating cavity, so that the efficiency is high and the operation is more convenient.

Description

Paper feeding device and image forming apparatus
Technical Field
The present invention relates to a paper feeding device and an image forming apparatus, and more particularly, to a paper feeding device and an image forming apparatus having a function of preventing overload of paper accumulation.
Background
In the conventional paper feeding device, the paper feeding device includes: the device comprises a box body, a paper placing box and an overstock sensor. The box body comprises a containing cavity, the paper box is located in the containing cavity, and the paper box can be moved out of the containing cavity by pulling the paper box. The overload sensor is arranged at a fixed height position in the accommodating cavity, and the fixed height is a limit value calculated according to the maximum bearing of the maximum-size type paper and the bottom sheet metal.
The amount of paper that can be carried by the paper cassette varies for different types of paper, i.e., the maximum allowable height of paper that can be placed in the paper cassette varies. Because the position of the overload sensor is fixed, the paper feeding device is difficult to adjust the maximum height of the paper allowed to be put according to different paper types, so that the quantity of paper sheets of small size type to be put is too small, and the space in the paper box is not fully utilized.
Furthermore, since the over-loading sensor is disposed in the accommodating cavity, the over-loading sensor can detect whether the paper height of the paper box exceeds the maximum allowable height only when the paper box is pushed into the accommodating cavity. In order to accurately stack the paper in the paper box to the maximum allowable height, the user needs to repeatedly push and pull the paper box to supplement the paper or take out the redundant paper, so that the operation is complex, and the operation efficiency is low. In addition, repeated pushing and pulling of the paper box can also cause abrasion of the paper box, and the service life of the paper box is influenced.
Disclosure of Invention
The present invention has been made to solve the above-described problems, and an object thereof is to provide a paper feeding device and an image forming apparatus having a height-limited display portion with high accuracy and high efficiency.
In order to solve the above problems, the present invention provides a paper feeding device including: the box body comprises a containing cavity; the paper placing box is positioned in the accommodating cavity, and the paper placing box can be moved out of the accommodating cavity by pulling the paper placing box; the regulating plate is positioned in the paper placing box, the position of the regulating plate in the paper placing box is movable, and the regulating plate is suitable for regulating paper; and the height limiting display part is suitable for displaying the maximum allowable height of the paper which can be placed in the paper placing box according to the position of the regulating plate.
Intensive studies by the inventors of the present invention have found that a regulating plate for regulating paper is provided in a paper feeding apparatus, and regulating positions of the regulating plate are different for different paper types. The height limiting display part displays the maximum allowable height of the paper in the paper box according to the position of the regulating plate, the accuracy is high, and the paper overload in the paper box can be effectively prevented.
In addition, under the state that the paper box moves out the holding chamber outward, limit for height display part also can show the biggest allowable height of paper that can put, and the operation of being convenient for helps improving operating efficiency, avoids detecting overload and the repeated pull paper box of putting under the paper box is in the closed condition to reduce the damage that causes the paper box.
In the paper feeding device, the height limiting display part is connected with the regulating plate, and when the regulating plate moves in the horizontal direction, the height limiting display part moves in the height direction so as to display the maximum allowable height of different types of paper which can be placed in the paper placing box.
Therefore, the height limiting display part moves along the height direction synchronously along with the movement of the regulating plate along the horizontal direction, so that the maximum allowable height of the paper which can be placed can be continuously displayed.
The paper feeder further includes: a sheet information acquisition section adapted to acquire sheet information in the sheet cassette; and a calculating unit configured to calculate a maximum allowable height at which sheets can be placed in the sheet cassette based on the sheet information acquired by the sheet information acquiring unit, and the height limit display unit displays the calculated maximum allowable height.
Thus, in a state in which the paper cassette is moved out of the accommodating chamber, the calculating section calculates the maximum allowable height of the paper that can be placed according to different paper types, and the accuracy can be further improved.
In the above paper feeding device, the regulating plate includes a side regulating plate and an end regulating plate, the side regulating plate is located at two sides of the paper, and the end regulating plate is located at one end of the paper; the paper information acquisition section includes: the first sensing part is positioned on the side surface regulation plate and is suitable for sensing whether the side surface regulation plate is in contact with two sides of the paper or not; a first measuring part which obtains paper width information by measuring the distance between the side surface regulation plates when the first sensing part senses that the side surface regulation plates are contacted with two sides of the paper; a second sensing portion located on the end portion regulating plate, the second sensing portion being adapted to sense whether the end portion regulating plate is in contact with an end portion of the sheet; a second measuring part which obtains paper length information by measuring the distance between the end portion regulating plate and the inner wall of the paper placing box when the second sensing part senses that the end portion regulating plate is contacted with the end portion of the paper; a plateau amount acquisition section adapted to acquire sheet plateau amount information.
The first measuring part and the first sensing part are matched with the side surface regulating plate, so that the paper width information can be obtained; the second measuring part and the second sensing part are matched with the end part regulating plate, so that the paper length information can be obtained; the plateau amount acquisition section may acquire the sheet plateau amount information. Thereby, the sheet information acquiring section can acquire the sheet information in the sheet cassette.
In the above paper feeding device, the paper information acquisition unit further includes: and the weight sensor is suitable for detecting the weight information of the current paper in the paper box.
The weight sensor can acquire weight information of current paper in the paper box, and can acquire the height of the current paper in the paper box by combining the acquired paper length information, paper width information and paper plateau amount information, so that the paper height in the paper box is conveniently monitored.
The paper feeder further includes: a weight limiting portion adapted to calculate a maximum allowable weight of paper that can be placed in the paper placing cassette; and an alarm unit configured to issue an alarm when the current sheet weight detected by the weight sensor exceeds the maximum allowable weight calculated by the weight limiting unit.
Therefore, the alarm part can give an alarm when the weight of the current paper exceeds the maximum allowable weight so as to give an alarm signal to a user, thereby preventing the paper in the paper placing box from being overloaded.
In the above paper feeding device, the bottom of the paper feeding box is a supporting plate, the supporting plate is movably connected with the inner wall of the paper feeding box, and the paper feeding device further comprises: a lifting control part adapted to control the lifting of the pallet and the paper sheet on the pallet; a driving section adapted to supply a driving current to the rise control section; and a current adjusting section adapted to adjust the driving current supplied from the driving section based on the weight information of the current sheet detected by the weight sensor.
Therefore, the driving part has difference in driving current provided for the ascending control part along with the difference of the weight information of the current paper detected by the weight sensor, thereby being beneficial to reducing energy loss and realizing the purpose of energy saving.
The paper feeder further includes: the regulation plate comprises a side regulation plate and an end regulation plate, wherein the side regulation plate is positioned at two sides of the paper, and the end regulation plate is positioned at one end of the paper; the paper information acquisition section includes: a first distance measuring unit that measures a pitch of the side surface regulation board to obtain paper width information; a first button that is pressed to cause the first distance measuring unit to measure; a second distance measuring part for measuring the distance between the end part regulating plate and the inner wall of the paper placing box to obtain paper length information; and a second button, wherein the second distance measuring part is used for measuring after the second button is pressed.
Prompting a first distance measuring part to measure the distance between the side surface regulation plates in a mechanical mode of pressing the first button so as to acquire paper width information; and prompting the second distance measuring part to measure the distance between the end part regulating plate and the inner wall of the paper placing box in a mechanical mode of pressing the second button so as to acquire the paper length information, thereby reducing the production cost.
In the above paper feeding device, the number of the weight sensors is plural; further comprises: and a weight statistics unit adapted to count an average value of weight information of the current sheet monitored by the plurality of weight sensors.
Thereby, the accuracy of the acquired current sheet weight information can be improved.
Further, the paper feeding device of the present invention can be applied to an image forming apparatus, and thus can bring about the effects described above.
Drawings
FIG. 1 is a schematic diagram of an image forming apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of a paper feed cassette of a paper feed apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic view of the height-limiting display section shown in FIG. 2;
Fig. 4 is a schematic diagram illustrating a comparison of different situations of the LED light bar of the height-limiting display portion shown in fig. 2.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, many alternatives to these embodiments can be made by those skilled in the art in light of the disclosure of these embodiments, and the invention is not limited to the preferred embodiments described herein.
The specific configuration of the reader according to the present invention will be described in detail below.
Referring to fig. 1 and 2, a paper feeding apparatus 10 includes: the box body comprises a containing cavity; the paper box 100 is positioned in the accommodating cavity, and the paper box 100 can be moved out of the accommodating cavity by pulling the paper box 100; a regulating plate 200, wherein the regulating plate 200 is positioned in the paper placing box 100, and the regulating plate 200 is movable in the position in the paper placing box 100 and is suitable for regulating paper; and a height-limiting display unit adapted to display a maximum allowable height of the paper in the paper cassette 100 according to the position of the regulation plate 200.
As shown in fig. 1, the number of the paper cassettes 100 is one or more. In this embodiment, the number of the paper cassettes 100 is plural.
As shown in fig. 2, the regulating positions of the regulating plate 200 are different for different paper types. The height-limiting display unit displays the maximum allowable height of the paper in the paper cassette 100 according to the position of the regulation board 200, so that the accuracy is high, and the paper in the paper cassette 100 can be effectively prevented from being overloaded. In addition, in the state that the paper box 100 moves out of the accommodating cavity, the height limiting display part can display the maximum allowable height of the paper which can be placed, so that the operation is convenient, the operation efficiency is improved, the paper box 100 is prevented from being repeatedly pulled and pulled due to overload detected when the paper box 100 is in a closed state, and the damage to the paper box 100 is reduced.
In this embodiment, the height-limiting display part is connected to the regulating plate 200, and when the regulating plate 200 moves in the horizontal direction, the height-limiting display part moves in the height direction to display the maximum allowable height at which different types of paper can be placed in the paper discharge cassette 100.
Accordingly, the height-limiting display part moves synchronously with the movement of the regulation plate 200 in the horizontal direction in the height direction, so that the maximum allowable height of the paper to be placed can be continuously displayed.
Referring to fig. 3, in this embodiment, the height limiting display section includes: a limit identifier 310 adapted to identify a limit height position; and a transmission mechanism connecting the limit marker 310 with the regulation plate 200.
In this embodiment, the limit marker 310 has a plate shape, and the surface of the limit marker 310 is parallel to the bottom wall surface of the paper box 100. When the limit mark 310 is plate-shaped, the limit mark 310 is disposed in the inner wall of the paper cassette 100 to prevent the paper feeding device 10 from being affected. In other embodiments, the boundary marker 310 may also be linear, bar-shaped, rod-shaped, or block-shaped.
In this embodiment, the normalization plate 200 has opposite first and second sides 201, which contact the paper during normalization.
The transmission mechanism comprises a plurality of fixed pulleys and a connecting belt 330, one end of the connecting belt 330 is connected with the regulation plate 200, and the other end is connected with the limit mark 310.
In this embodiment, the fixed pulley is located in the paper box 100. The fixed pulleys comprise a first fixed pulley 321, a second fixed pulley 322, a third fixed pulley 323 and a fourth fixed pulley 324, wherein the first fixed pulley 321 and the second fixed pulley 322 are positioned in the bottom wall of the paper placing box 100, and the rotating shafts of the first fixed pulley 321 and the second fixed pulley 322 are perpendicular to the surface of the bottom wall of the paper placing box 100; the first face 201 faces the first fixed pulley 321, and the second face faces the second fixed pulley 322; the third fixed pulley 323 is positioned in the side wall of the paper placing box 100, the round surface of the third fixed pulley 323 is parallel to the second surface, and the rotating shaft of the third fixed pulley 323 is perpendicular to the second surface; the fourth fixed pulley 324 is located at a position higher than the third fixed pulley 323, the circular surface of the fourth fixed pulley 324 is perpendicular to the second surface, and the rotation axis of the fourth fixed pulley 324 is parallel to the second surface.
In this embodiment, the connecting band 330 has a first end 331 and a second end 332 opposite to each other, the first end 331 is connected to the bottom end of the regulating plate 200, and the second end 332 is connected to the limit marker 310. From the first end 331 to the second end 332, the connecting belt 330 passes through the first fixed pulley 321, the second fixed pulley 322, the third fixed pulley 323, and the fourth fixed pulley 324 in sequence.
In this embodiment, the regulating plate 200 moves between the first fixed pulley 321 and the second fixed pulley 322 along the x-axis direction. The limit indicator 310 moves downward as the regulating plate 200 moves toward the first fixed pulley 321. The limit indicator 310 moves upward when the regulating plate 200 moves toward the second fixed pulley 322.
As shown in fig. 2, the height-limiting display part further includes: a guide 340, said guide 340 being adapted to limit the path of movement of said connecting band 330.
As shown in fig. 3, in this embodiment, the connecting band 330 has a first connecting surface and a second connecting surface opposite to each other, where the first connecting surface is green, and the second connecting surface is red. The second connection of the connecting belt 330 between the fourth fixed pulley 324 and the limit sign 310 faces outwards and the first connection faces inwards. The first connection face of the connecting belt 330 between the fourth fixed pulley 324 and the third fixed pulley 323 faces outward and the second connection face faces inward. The definition of the inside and the outside is based on the orientation of the regulation plate 200, and the connection surface facing the regulation plate 200 is an outward connection surface and the connection surface facing away from the regulation plate 200 is an inward connection surface.
As the limit marker 310 moves downward, the length of the second connection surface exposed outward in red gradually increases, and the length of the first connection surface exposed between the limit marker 310 and the third fixed pulley 323 gradually decreases, when the limit marker 310 is viewed from the position of the regulating plate 200 in the direction opposite to the x-axis.
As the limit marker 310 moves upward, the length of the second connection surface exposed outward in red gradually decreases, and the length of the first connection surface exposed between the limit marker 310 and the third fixed pulley 323 in green gradually increases, when the limit marker 310 is viewed from the position of the regulation plate 200 along the direction opposite to the x-axis.
The second connection surface of red color exposed outward from the limit sign 310 when viewed from the opposite direction of the x-axis of the regulation plate 200 indicates that the corresponding height area is not available for paper, and the first connection surface of green color exposed between the limit sign 310 and the third fixed pulley 323 indicates that the corresponding height area is available for paper. The limit mark 310 is the junction between two areas, and the position of the limit mark 310 is the maximum allowable height of the paper in the paper box 100.
As shown in fig. 2, when the regulation board 200 is located at (x 0, 0) in the xyz coordinate system, the coordinate position of the limit marker 310 is (0, h 0); when the regulation plate 200 moves to (x 1, 0), the coordinate position of the limit mark 310 is (0, h 1); when the gauge plate 200 moves to (x 2, 0), the coordinate position of the limit marker 310 is (0, h 2); when the gauge plate 200 moves to (x 3, 0), the coordinate position of the limit marker 310 is (0, h 3). Wherein x0, x1, x2, x3 are sequentially increased, and h0, h1, h2, h3 are sequentially decreased.
Fig. 4 is a schematic diagram illustrating a comparison of different situations of the LED light bar of the height-limiting display portion shown in fig. 2. The leftmost rectangular frame represents the inner wall of the paper box 100, shows the side projection of the LED light bar, and the right four rectangular frames respectively show four different display conditions of the front projection of the LED light bar.
In other embodiments, as shown in fig. 4, the height limiting display part further includes: the LED light bar extends along the z-axis direction, and is arranged on the inner wall of the paper box 100 or on the guide rail 340. The LED light bars above the limit markers 310 are of a first color and the LED light bars below the limit markers 310 are of a second color, which is different from the first color. The whole LED light bar presents a first color strip area and a second color strip area which extend along the z-axis direction, and the junction height of the first color strip area and the second color strip area is the same as the height of the regulation board 200. The second color elongated strip region shows an allowable height at which paper can be placed, and the first color elongated strip region does not place paper at a corresponding height.
The second color is different from the first color, for example, the first color is red and the second color is green.
In addition, the non-paper-dischargeable sections and paper-dischargeable sections can be displayed by controlling the on/off of the LED light bars above or below the limit markers 310.
In another embodiment, the paper feeding device 10 further includes: a paper information acquisition section adapted to acquire paper information in the paper cassette 100; and a calculating unit that calculates a maximum allowable height at which sheets can be set in the sheet cassette 100 based on the sheet information acquired by the sheet information acquiring unit, and the height limit display unit displays the calculated maximum allowable height.
Thereby, the calculating section calculates the maximum allowable height of the paper that can be set according to the different paper types in a state where the paper setting cassette 100 is moved out of the accommodating chamber, the accuracy can be further improved.
The regulation plate 200 includes a side regulation plate and an end regulation plate, the side regulation plate is positioned at both sides of the paper, and the end regulation plate is positioned at one end of the paper.
The paper information acquisition section includes: the first sensing part is positioned on the side surface regulation plate and is suitable for sensing whether the side surface regulation plate is in contact with two sides of the paper or not; a first measuring part which obtains paper width information by measuring the distance between the side surface regulation plates when the first sensing part senses that the side surface regulation plates are contacted with two sides of the paper; a second sensing portion located on the end portion regulating plate, the second sensing portion being adapted to sense whether the end portion regulating plate is in contact with an end portion of the sheet; a second measuring unit that obtains sheet length information by measuring a distance between the end regulating plate and an inner wall of the sheet cassette 100 when the second sensing unit senses that the end regulating plate is in contact with an end of the sheet; a plateau amount acquisition section adapted to acquire sheet plateau amount information.
The first measuring part and the first sensing part are matched with the side surface regulating plate, so that the paper width information can be obtained; the second measuring part and the second sensing part are matched with the end part regulating plate, so that the paper length information can be obtained; the plateau amount acquisition section may acquire the sheet plateau amount information. Thereby, the sheet information acquiring unit can acquire the sheet information in the sheet cassette 100.
The maximum weight of the paper that can be borne by the paper feeding cassette 100 is G (in grams), the width of the acquired paper measured by the first measuring part is W1 (in meters), the width of the acquired paper measured by the second measuring part is L1 (in meters), the information of the amount of paper apron acquired by the amount of paper apron acquiring part is δ1 (in grams per square meter), and the maximum number z of the paper that can be fed into the paper feeding cassette 100 is:
z＝G/(W1×L1×δ1)；
The maximum height H1 of the paper in the paper cassette 100 is:
H1＝z×W1；
wherein W1 is the thickness value of the single paper.
In other embodiments, the paper information acquisition section further includes: a weight sensor adapted to detect weight information of the current paper in the paper cassette 100.
The weight sensor can acquire weight information of current paper in the paper box 100, and can acquire the height of the current paper in the paper box 100 by combining the acquired paper length information, paper width information and paper plateau amount information, so that the paper height in the paper box 100 can be monitored conveniently.
The current paper weight in the paper box 100 acquired by the weight sensor is G1, and the current paper height in the paper box 100 is H11, where:
H11＝(G1×H1)/G；
the number of the weight sensors is one or more. When the number of the weight sensors is plural, the paper feeding device 10 further includes: and a weight statistics unit adapted to count an average value of weight information of the current sheet monitored by the plurality of weight sensors.
The weight statistics part can improve the accuracy of the acquired current paper weight information by counting the average value of the weight information displayed by the weight sensors, and is beneficial to improving the accuracy of the acquired current paper height information.
The height-limiting display section further includes: the LED lamp group comprises a plurality of LED lamps, the LED lamps are arranged on the inner side wall of the paper placing box 100 at equal intervals along the height direction, and the LED lamps extend from the bottom wall of the paper placing box 100 to the top wall of the paper placing box 100. The serial numbers of the LED lamps are sequentially 1, 2 and 3 … X from the bottom wall to the top wall of the paper placing box 100, wherein X is the serial number of the LED lamp positioned at the top wall of the paper placing box 100.
The height of the paper box 100 is D, and the LED lamp serial number at the maximum allowable height of the paper in the paper box 100 is X1:
X1＝(X×H1)/D；
The LED lamp number at the height of the current paper in the paper feeding cassette 100 is X11:
X11＝(X1×H11)/H1；
The height-limiting display section further includes: and the lamp control part is suitable for controlling the on-off of the LED lamp group.
In the process of putting paper into the paper putting box 100, the light control part regulates and controls the LED lamp group, so that the LED lamps with serial numbers of X11 to X1 are in a lamp on state, and the rest LED lamps are in a lamp off state. As the user puts paper into the paper box 100, the number of the LED lamps in the lighted state gradually decreases until all the LED lamps are turned off, and at this time, the height of the paper in the paper box 100 reaches the maximum allowable height.
The paper feeding device 10 further includes: a weight limiting portion adapted to calculate a maximum allowable weight of paper that can be placed in the paper placing cassette 100; and an alarm unit configured to issue an alarm when the current sheet weight detected by the weight sensor exceeds the maximum allowable weight calculated by the weight limiting unit.
Thereby, the alarm portion can issue an alarm when the weight of the current sheet exceeds the maximum allowable weight to issue a warning signal to the user, thereby preventing overload of the sheets in the sheet cassette 100.
The number of the weight sensors is multiple, so that the accuracy of the acquired current paper weight information is improved, and the time for giving an alarm by the alarm part is more accurate.
In this embodiment, the bottom of the paper box 100 is a supporting plate, the supporting plate is movably connected with the inner wall of the paper box 100, and the paper feeding device 10 further includes: a lifting control part adapted to control the lifting of the pallet and the paper sheet on the pallet; a driving section adapted to supply a driving current to the rise control section; and a current adjusting section adapted to adjust the driving current supplied from the driving section based on the weight information of the current sheet detected by the weight sensor.
Therefore, the driving part has difference in driving current provided for the ascending control part along with the difference of the weight information of the current paper detected by the weight sensor, thereby being beneficial to reducing energy loss and realizing the purpose of energy saving.
When the sheet weight in the sheet cassette 100 reaches the maximum weight G, the driving current supplied from the driving unit is I. In the process of placing paper into the paper placing box 100, the current paper weight in the paper placing box 100 acquired by the weight sensor is G1, and the driving current provided by the driving part is I1:
I1＝(G1×I)/G。
The number of the weight sensors is multiple, and the weight statistics part can improve the accuracy of the acquired current paper weight information by counting the average value of the weight information displayed by the weight sensors, so that the driving current provided by the driving part is more accurate and proper.
In yet another embodiment, the method further comprises: the regulation plate 200 comprises a side regulation plate and an end regulation plate, wherein the side regulation plate is positioned at two sides of the paper, and the end regulation plate is positioned at one end of the paper; the paper information acquisition section includes: a first distance measuring unit that measures a pitch of the side surface regulation board to obtain paper width information; a first button that is pressed to cause the first distance measuring unit to measure; a second distance measuring unit for measuring the distance between the end portion regulating plate and the inner wall of the paper cassette 100 to obtain paper length information; and a second button, wherein the second distance measuring part is used for measuring after the second button is pressed.
Prompting a first distance measuring part to measure the distance between the side surface regulation plates in a mechanical mode of pressing the first button so as to acquire paper width information; the second distance measuring unit is prompted to measure the distance between the end portion regulating plate and the inner wall of the paper cassette 100 by pressing the second button mechanically, so that the paper length information is obtained, and thus, the production cost can be reduced.
As shown in fig. 1, the present invention also provides an image forming apparatus 1 including the above-described paper feeding apparatus 10.
The paper feeding device 10 can be applied to an image forming apparatus, and thus can provide the effects described above.
The image forming apparatus 1 further includes: a conveying section 30 including a plurality of sets of conveying roller pairs adapted to convey the sheet along a predetermined conveying path; a transfer section 31 adapted to transfer toner to paper; the fixing unit 32 is adapted to perform fixing processing on the paper.
The image forming apparatus 1 further includes: a display unit 20 adapted to display the operating states of the paper feeding device 10, the conveying unit 30, the transfer unit 31, and the fixing unit 32, and also to display an operation instruction of an operator; the operation panel 21 is adapted to input an operation instruction by an operator.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.

Claims (9)

1. A paper feeding apparatus comprising:
the box body comprises a containing cavity;
the paper placing box is positioned in the accommodating cavity, and the paper placing box can be moved out of the accommodating cavity by pulling the paper placing box;
The end portion regulating plate is positioned in the paper placing box, the position of the end portion regulating plate in the paper placing box is movable, and the end portion regulating plate is suitable for regulating paper;
Characterized by further comprising:
A height-limiting display unit adapted to display a maximum allowable height of the paper that can be placed in the paper cassette according to a position of the end-portion regulating plate;
The height limiting display part is connected with the end part regulating plate, and when the end part regulating plate moves along the horizontal direction, the height limiting display part moves along the height direction so as to display the maximum allowable height of different types of paper which can be placed in the paper placing box;
Wherein, limit for height display portion includes: a limit identifier adapted to identify a limit height position; the transmission mechanism is connected with the limit marking piece and the end regulation plate, when the end regulation plate moves away from the limit marking piece, the limit marking piece moves downwards, and when the end regulation plate moves towards the limit marking piece, the limit marking piece moves upwards;
The transmission mechanism comprises a plurality of fixed pulleys and a connecting belt, one end of the connecting belt is connected with the end regulation plate, and the other end of the connecting belt is connected with the limit marking piece.
2. The paper feeding apparatus according to claim 1, further comprising: a sheet information acquisition section adapted to acquire sheet information in the sheet cassette; and a calculating unit configured to calculate a maximum allowable height at which sheets can be placed in the sheet cassette based on the sheet information acquired by the sheet information acquiring unit, and the height limit display unit displays the calculated maximum allowable height.
3. The paper feeding apparatus according to claim 2, further comprising side regulating plates located on both sides of the paper, the end regulating plates being located at one end of the paper; the paper information acquisition section includes:
The first sensing part is positioned on the side surface regulation plate and is suitable for sensing whether the side surface regulation plate is in contact with two sides of the paper or not;
A first measuring part which obtains paper width information by measuring the distance between the side surface regulation plates when the first sensing part senses that the side surface regulation plates are contacted with two sides of the paper;
a second sensing portion located on the end portion regulating plate, the second sensing portion being adapted to sense whether the end portion regulating plate is in contact with an end portion of the sheet;
A second measuring part which obtains paper length information by measuring the distance between the end portion regulating plate and the inner wall of the paper placing box when the second sensing part senses that the end portion regulating plate is contacted with the end portion of the paper;
A plateau amount acquisition section adapted to acquire sheet plateau amount information.
4. The paper feeding device according to claim 3, wherein the paper information acquiring section further includes: and the weight sensor is suitable for detecting the weight information of the current paper in the paper box.
5. The paper feeding apparatus according to claim 4, further comprising:
A weight limiting portion adapted to calculate a maximum allowable weight of paper that can be placed in the paper placing cassette;
and an alarm unit configured to issue an alarm when the current sheet weight detected by the weight sensor exceeds the maximum allowable weight calculated by the weight limiting unit.
6. The paper feeding device according to claim 4, wherein the bottom of the paper feeding box is a supporting plate, and the supporting plate is movably connected with the inner wall of the paper feeding box, and further comprising:
a lifting control part adapted to control the lifting of the pallet and the paper sheet on the pallet;
A driving section adapted to supply a driving current to the rise control section;
and a current adjusting section adapted to adjust the driving current supplied from the driving section based on the weight information of the current sheet detected by the weight sensor.
7. The paper feeding apparatus according to claim 2, further comprising side regulating plates located on both sides of the paper, the end regulating plates being located at one end of the paper; the paper information acquisition section includes:
a first distance measuring unit that measures a pitch of the side surface regulation board to obtain paper width information;
a first button that is pressed to cause the first distance measuring unit to measure;
a second distance measuring part for measuring the distance between the end part regulating plate and the inner wall of the paper placing box to obtain paper length information;
and a second button, wherein the second distance measuring part is used for measuring after the second button is pressed.
8. The paper feeding apparatus according to any one of claims 4 to 6, wherein the number of the weight sensors is plural; further comprises: and a weight statistics unit adapted to count an average value of weight information of the current sheet monitored by the plurality of weight sensors.
9. An image forming apparatus comprising the paper feeding apparatus according to any one of claims 1 to 8.
CN202010187314.2A 2020-03-17 2020-03-17 Paper feeding device and image forming apparatus Active CN113401686B (en)

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