CN206318868U - Clamping 3D sheet material hot bending mold - Google Patents

Abstract

The utility model provides a clamping 3D plate-like material hot bending mold, which belongs to the field of forming molds, including a lower mold, a middle mold and an upper mold; a forming protrusion is provided on the top surface of the lower mold, and at least one first arc structure is provided on the forming protrusion; the middle mold is buckled on the lower mold, and a receiving area capable of clamping the plate-like material to be processed is provided between the middle mold and the lower mold; the middle mold is provided with insertion holes corresponding to the first arc structure one by one; the bottom surface of the upper mold is provided with an insertion block, and the insertion block can pass through the insertion hole; the bottom of the insertion block is provided with a second arc structure, and the second arc structure interacts with the first arc structure to cause the two ends of the plate-like material to be processed to be formed. The middle mold of the utility model cooperates with the lower mold to clamp the plane part of the plate-like material to be processed, ensuring that during the processing, the plane part always keeps in contact with the middle mold and the lower mold without deformation, so that the plate-like material only starts to bend from the place where it needs to be bent, and the flatness of the plane part can be ensured.

Description

Clamping 3D sheet material hot bending mold

technical field

The utility model relates to the field of construction equipment, in particular to a clamping type 3D hot-bending mold for plate materials.

Background technique

Traditional 3D glass hot bending molds generally adopt two design methods: ordinary two-plate type and glass bead push-plate type.

1. Ordinary two-plate type:

Referring to Figure 1, this kind of 3D hot bending mold is composed of two parts, the first punch 1' and the first concave mold 2'. When forming, first place the 2D glass (hereinafter referred to as glass) on the first concave mold 2'. slot, then cover the first convex mold 1', and finally put the mold with glass into the 3D glass bending machine (hereinafter referred to as the bending machine). The mold 1' exerts pressure to close the first punch 1' and the first concave mold 2' to complete the molding process. During the molding process, one side of the glass is always in a non-contact state, and the upper and lower sides will completely fit the mold after the molding is completed.

For ordinary two-plate molds, since the glass and the mold are always in point contact or surface contact during the molding process, due to the influence of the lever principle during the molding process, when the two sides of the glass are stressed, the middle part of the glass generates the largest torque. As a result, the glass tends to bend from the weakest middle plane part, but we need to ensure that the plane part presents an absolute plane during the production process, and only let the bending deformation start from the position that conforms to the design of the drawing, that is, the place that should be bent should not be bent. The place is not bent, and the traditional ordinary two-plate mold cannot effectively solve this problem, so the quality of the uneven surface often occurs during the production process of the ordinary two-plate mold.

At the same time, only after the molding process is completed and the two molds are completely closed, the glass surface will be completely attached to the mold. During the molding process, the glass is not in full contact with the two molds, resulting in the glass being in a free state to a certain extent. When the glass is softened at high temperature , under the action of the pressure of the first punch 1', the glass may slide left and right. This phenomenon will cause the abnormality of the large and small sides of the glass after forming, that is, the sides with the same height on both sides after forming will become One side is tall and the other side is short.

2. Glass bead push plate type:

Referring to Fig. 2, this kind of 3D hot bending mold consists of three parts: the second punch 3', the second die 4', and the push plate 5'. Referring to Fig. 3 and Fig. 4, when molding, put a certain amount of glass beads 6' in the designated position of the second die 4', and then place the push plate 5' in the groove of the second die 4' to cover On the glass beads 6', glass is placed in the glass positioning groove of the second concave mold 4', and the second convex mold 3' is covered. Finally, put the glass-filled mold into a specific machine, and when the temperature of the mold reaches the specified temperature, apply pressure to the second punch 3' to close the two molds to complete the molding process. During the molding process, the glass beads 6' will soften and deform together with the glass, and under the support of the glass beads 6', the flat part of the glass is always in contact with the push plate 5' and the second punch 3'.

Compared with the ordinary two-plate mold, the glass bead push plate mold uses glass beads 6', and the push plate 5' and the second punch 3' will always keep in contact with the glass during the molding process, thus slowing down the process to a certain extent. After forming, the surface is uneven or the quality of the large and small sides is abnormal. However, since the glass beads 6' are softened and deformed during the molding process, specific softening parameters are also required, that is to say, the softening parameters (temperature and pressure) of the glass must be considered during the molding process, and the glass bead 6' must also be considered. 6' softening parameters. Invisibly increase the production variables and increase the difficulty of production. At the same time, the glass beads 6' need to be replaced every time the forming mold completes a production. The number of each replacement is four to six, and the glass beads 6' can only be used once. At the same time, it is not conducive to mass production or automated production.

In summary, the above two 3D glass hot bending molds each have relatively large technical defects. Therefore, there is a need for a 3D glass hot bending mold with stable product quality, low production difficulty, and low cost in the prior art.

Utility model content

The purpose of this utility model is to provide a clamping type 3D plate-shaped material hot bending mold to solve the existing 3D hot bending molds. "Technical issues.

The utility model provides a clamping type 3D plate material hot bending mold, comprising:

A lower mold, the top surface of the lower mold is provided with a forming protrusion adapted to the shape of the product to be produced, and the forming protrusion is provided with at least one first arc structure;

A middle mold, the middle mold is fastened on the lower mold, and an accommodating area capable of clamping the plate material to be processed is provided between the middle mold and the lower mold; Structure—relative installation holes;

The upper mold, the bottom surface of the upper mold is provided with an insertion block, and the insertion block can pass through the insertion hole; the bottom of the insertion block is provided with a second arc structure, and the second arc structure and the first A circular arc structure interacts to shape the two ends of the sheet material to be processed.

Further, the lower mold includes a base plate and a forming protrusion, and the forming protrusion is fixed at the center of the top surface of the base plate;

The middle mold includes a vertical support and a horizontal support, the vertical support is fixed on the edge of the horizontal support, the bottom surface of the vertical support is against the both sides of the bottom plate of the lower mold, and the horizontal support The distance between the bottom surface of the part and the top surface of the forming protrusion is equal to the thickness of the plate material;

The upper mold includes a top plate and two insertion blocks, and the insertion blocks are respectively fixed on both sides of the top plate.

Further, the middle part of the top surface of the forming protrusion is a plane, and the two sides of the top surface are first arc structures; the side of the middle mold in contact with the plate material is a plane.

Further, the distance between the two vertical supports is equal to the width of the forming protrusion.

Further, when the top plate of the upper mold is attached to a horizontal support of the middle mold, one side of the second arc structure is flush with the bottom surface of the horizontal support, and the other side is close to the vertical support.

Further, the horizontal support member of the middle mold is provided with a limit groove whose shape is suitable for the plate material to be processed.

Further, a first guide rail is provided on a side of the vertical support close to the insertion hole, and a first guide groove adapted to the first guide rail is provided on one side of the insertion block.

Further, a positioning block is provided on the top surface of the vertical support of the middle mold, and a positioning groove adapted to the positioning block is provided on the bottom surface of the top plate.

Further, a second guide rail is provided on the top surface of the bottom plate of the lower mold, and a second guide groove adapted to the second guide rail is provided on the bottom surface of the vertical support member of the middle mold.

Further, the material of the lower mold, the middle mold and the upper mold is graphite.

Compared with the prior art, the clamping type 3D plate-shaped material hot-bending mold provided by the utility model not only includes an upper mold and a lower mold that can be plate-shaped materials, but also sets a middle plate for limiting and fixing. mold. The middle mold and the lower mold are responsible for clamping the plane part of the plate material to be processed, ensuring that the plane part of the plate material is always in contact with the middle mold and the lower mold during the processing without deformation; the insertion block of the upper mold After passing through the insertion hole, the second circular arc structure acts on the edge of the plate-shaped material; the plate-shaped material to be processed only begins to bend and deform from the point where the edge contacts the second circular-arc structure, that is, the plate-shaped material to be processed The material only starts to bend where it needs to bend, which can ensure the flatness of the flat part. Moreover, under the clamping action of the middle mold and the lower mold, the plate-shaped material can be prevented from sliding left and right, so that the shape of the formed product is accurate and stable, and there will be no abnormalities in the size and size.

Description of drawings

In order to more clearly illustrate the specific implementation of the utility model or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the following descriptions The accompanying drawings are some implementations of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative work.

Fig. 1 is the structural representation of the common two-plate type 3D hot-bending mold in the prior art;

Fig. 2 is the structural representation of the 3D hot-bending mold of glass bead pushing plate type in the prior art;

Fig. 3 is the structural representation of the 3D hot-bending mold of the glass bead push plate type shown in Fig. 2 before compression molding;

Fig. 4 is the schematic structural view of the 3D hot bending mold of the glass bead push plate type shown in Fig. 2 after compression molding;

Fig. 5 is a schematic structural view of the clamping type 3D sheet material hot bending die provided by the first embodiment of the present invention;

Fig. 6 is a schematic diagram of the first step in the use process of the clip-type 3D plate material hot bending mold shown in Fig. 5;

Fig. 7 is a schematic diagram of the second step in the use process of the clip-type 3D plate material hot bending mold shown in Fig. 5;

Fig. 8 is a schematic diagram of the third step in the use process of the clip-type 3D plate material hot bending mold shown in Fig. 5;

Fig. 9 is a schematic diagram of the fourth step in the use process of the clip-type 3D plate material hot bending mold shown in Fig. 5;

Fig. 10 is a schematic diagram of the fifth step in the use process of the clip-type 3D plate-shaped material hot bending mold shown in Fig. 5 .

Reference signs:

1'-the first punch; 2'-the first die; 3'-the second punch;

4'-Second die; 5'-Push plate; 6'-Glass beads;

1-lower mold; 2-middle mold; 3-upper mold;

4-plate material; 11-bottom plate; 12-molding protrusions;

13-the first arc structure; 21-vertical supports; 22-horizontal supports;

23-installation hole; 31-top board; 32-installation block;

33 - Second circular arc structure.

detailed description

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Fig. 5 is a schematic structural view of the clamping type 3D plate material hot bending die of the present invention; Fig. 6 is the first step of the clamping type 3D plate material hot bending die shown in Fig. 5 . Schematic diagram; Figure 7 is a schematic diagram of the clamping 3D sheet material hot bending die shown in Figure 5, a schematic diagram of the second step in the use process; Figure 8 is a clamping 3D sheet material hot bending shown in Figure 5 The schematic diagram of the mold during the third step in the use process; FIG. 9 is a schematic diagram of the clamping type 3D sheet material hot bending mold shown in FIG. 5 during the fourth step in the use process; FIG. 10 is the schematic diagram of the fourth step in the use process; The schematic diagram of the fifth step in the use process of the clip-type 3D sheet material hot bending mold shown.

As shown in FIG. 5 , this embodiment provides a clamping type 3D plate-shaped material hot-bending mold, including a lower mold 1 , a middle mold 2 and an upper mold 3 .

Described lower mold 1 comprises base plate 11 and forming protrusion 12, and described forming protrusion 12 is fixed on the central place of base plate 11 top surface; At least one first arc structure 13 is provided on the riser 12 .

The middle mold 2 is fastened on the lower mold 1; the middle mold 2 includes a vertical support 21 and a horizontal support 22, the vertical support 21 is fixed on the edge of the horizontal support 22, and the vertical The bottom surface of the support member 21 abuts against both sides of the bottom plate 11 of the lower mold 1 , and the bottom surface of the horizontal support member 22 and the top surface of the forming protrusion 12 form an accommodating area capable of clamping the plate material 4 to be processed.

The height of the accommodating area is equal to the thickness of the plate-like material 4, ensuring that the thickness of the product after molding is accurate; the distance between the two vertical supports 21 is equal to the width of the forming protrusion 12, and the middle mold 2 is fastened to the lower mold 1, the middle mold 2 will not shake relative to the lower mold 1, and the connection is more stable.

The upper mold 3 includes a top plate 31 and two insertion blocks 32 , the insertion blocks 32 are respectively fixed on both sides of the top plate 31 , and the bottom of the insertion blocks 32 is provided with a second arc structure 33 .

The horizontal support member 22 of the middle mold 2 is provided with an insertion hole 23 corresponding to the first arc structure 13; the insertion block 32 of the upper mold 3 passes through the insertion hole 23, so that the first The interaction between the second arc structure 33 and the first arc structure 13 promotes the shaping of both ends of the plate material 4 to be processed.

This embodiment provides a clamping type 3D plate material hot bending die, and its operation method is as follows:

Step 1, the middle mold 2 is turned upside down, that is, the horizontal support 22 is below, and the plate-like material 4 to be processed is placed in the middle mold 2, as shown in Figure 6;

In order to ensure that the placement position of the plate-shaped material 4 to be processed is accurate and stable in this step, a limit groove is provided on the horizontal support member 22 of the middle mold 2, and the plate-shaped material 4 to be processed is accommodated and fixed in the limit. In the bit slot, there will be no left and right shaking;

Step 2, the lower mold 1 is fastened in the middle mold 2 from top to bottom, so that the forming protrusion 12 is pressed against the plate material 4 to be processed in the middle mold 2, so as to ensure that the plate material 4 is placed between the middle mold 2 and the middle mold 2. There will be no movement under the clamping of the lower die 1, as shown in Figure 7;

Step 3: Flip the fastened lower mold 1 and middle mold 2 so that the middle mold 2 is on the upper side and the lower mold 1 is on the lower side; assemble the upper mold 3 and insert the insertion block 32 of the upper mold 3 into the insertion hole 23 of the middle mold 2 ; As shown in Figure 8;

Step 4, put the assembled mold into a specific molding machine, apply pressure to the upper mold 3, and make the insertion block 32 move downward in the insertion hole 23, and the second arc structure 33 of the insertion block 32 acts on the plate-shaped On the material 4; the second arc structure 33 and the first arc structure 13 extrude each other to promote the forming of both ends of the plate material 4 to be processed; as shown in Figure 9;

Step 5, the mold is lifted, the middle mold 2 and the lower mold 1 are separated, and the processed and shaped product is taken out, as shown in Figure 10.

The clip-type 3D plate-shaped material hot-bending mold provided in this embodiment, in addition to the upper mold 3 and the lower mold 1 that can be the plate-shaped material 4 , is also provided with a middle mold 2 that acts as a limiter and fixes. The middle mold 2 and the lower mold 1 are responsible for clamping the flat part of the plate-shaped material 4 to be processed, ensuring that the flat part of the plate-shaped material 4 is always in contact with the middle mold 2 and the lower mold 1 during the processing process without deformation After the insertion block 32 of the upper mold 3 passes through the insertion hole 23, the second arc structure 33 acts on the edge of the plate material 4; the plate material 4 to be processed is only in contact with the second arc structure 33 from the edge The place begins to produce bending deformation, that is, the plate-like material 4 to be processed is only bent from the place where it needs to be bent, so as to ensure the flatness of the plane part. Moreover, under the clamping action of the middle mold 2 and the lower mold 1, the plate material 4 can be prevented from sliding left and right, so that the shape of the formed product is accurate and stable, and there will be no abnormalities in the size and size.

In addition, since there is no need to use glass beads 6', there is no need to consider the deformation of glass beads 6', which reduces production difficulty and processing accuracy; at the same time, it also saves the process of replacing glass beads 6', improves work efficiency, and is conducive to realizing Automated production, to a certain extent, reduces production costs.

In this embodiment, the plate-shaped material 4 refers to flat glass. During the molding process, the pressing bar of the molding machine will always be pressed on the middle mold 2 to keep applying continuous and constant pressure to the flat part of the glass to ensure that when the temperature reaches After the softening temperature, during the bending and deformation process of the glass, the plane part remains unchanged, and the glass only begins to bend and deform from the place where two sides or four sides contact the upper mold 3 . That is to keep the plane always flat, let the glass only start to bend from the place where it needs to be bent, so as to achieve the effect of producing qualified products.

Certainly, this is only a specific embodiment of the utility model, and the material targeted by the utility model is not limited thereto, and may also be other plate-shaped materials 4 .

In this embodiment, the middle part of the top surface of the forming protrusion 12 is a plane, and the two sides of the top surface are the first arc structures 13; the bottom surface is a plane.

The forming protrusion 12 of the above-mentioned shape is suitable for products with a flat middle part and a circular arc structure on the edge, such as a mobile phone panel with a circular arc surface on the side, a mobile phone protective case adapted to the mobile phone panel, etc.; arcs can be provided on both sides It can also be a product with arcs on all four sides.

The clamping type 3D sheet-shaped material hot-bending mold provided by the utility model can be applied to single-side bending structures, two-side bending structures, three-side bending structures, four-side bending structures, or other multilateral bending structures.

Of course, this is only a specific embodiment of the utility model, and the first arc structure 13 of the utility model is not limited thereto. The position of the arc zone is not limited to the edge of the plane zone, for example, it can also be located in the middle of the plane zone, corresponding to the production of plate-like products with a circular arc shape in the middle.

In this embodiment, when the top plate 31 of the upper mold 3 is attached to a horizontal support member 22 of the middle mold 2, one side of the second arc structure 33 is flush with the bottom surface of the horizontal support member 22, and the other side is in close contact with the bottom surface of the horizontal support member 22. Vertical supports 21 .

In this embodiment, multiple guiding structures are also provided to ensure that the interaction between the lower die 1 , the middle die 2 and the upper die 3 is carried out stably.

A first guide rail is provided on a side of the vertical support member 21 close to the insertion hole 23 , and a first guide groove adapted to the first guide rail is provided on one side of the insertion block 32 .

A second guide rail is provided on the top surface of the bottom plate 11 of the lower mold 1 , and a second guide groove adapted to the second guide rail is provided on the bottom surface of the vertical support member 21 of the middle mold 2 .

In addition, in order to ensure accurate cooperation between the middle mold 2 and the upper mold 3, a positioning block is provided on the top surface of the vertical support member 21 of the middle mold 2, and a positioning block adapted to the positioning block is provided on the bottom surface of the top plate 31. groove.

In this embodiment, the material of the lower mold 1 , the middle mold 2 and the upper mold 3 is graphite material. Of course, this is only a specific embodiment of the utility model, and the materials of the lower mold 1, the middle mold 2 and the upper mold 3 of the utility model are not limited thereto, and may also be ceramics, tungsten steel, alloys, etc.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the embodiments of the present utility model Scope of technical solutions.

Claims (10)

1. a kind of clipping 3D board-like materials hot bending die, it is characterised in that including：

Lower mould, the top surface of the lower mould is provided with the shaping projection being adapted with the shape of product to be produced, and the shaping is raised It is provided with the first arc structure at least one；

Middle mould, the middle mould is fastened on lower mould, and board-like material to be processed can be clamped by being provided between the middle mould and lower mould Accommodating area；The middle mould, which is provided with, relative one by one with the first arc structure assigns hole；

Upper mould, the bottom surface of the upper mould is described to assign the block to assign hole through described provided with assigning block；The bottom for assigning block Portion is provided with the second arc structure, and the second arc structure and the first arc structure interaction promotes board-like material to be processed Two ends shaping.

2. clipping 3D board-like materials hot bending die according to claim 1, it is characterised in that the lower mould includes base plate And shaping is raised, the shaping projection is fixed on the centre of plate top surface；

The middle mould includes two vertical support members and a horizontal support member, and the vertical support member is fixed on the side of horizontal support member Edge, the bottom surface of the vertical support member is against the both sides of the base plate of lower mould, and the horizontal support member bottom surface is away from the raised top surface of shaping Distance be equal to board-like material thickness；

The upper mould assigns block, the both sides for assigning block to be separately fixed at top board including a top board and two.

3. clipping 3D board-like materials hot bending die according to claim 2, it is characterised in that the raised top of the shaping Middle face is a plane, and the both sides of top surface are the first arc structure；The one side that the middle mould is contacted with board-like material is a plane.

4. clipping 3D board-like materials hot bending die according to claim 2, it is characterised in that between two vertical support members Distance be equal to the raised width of shaping.

5. clipping 3D board-like materials hot bending die according to claim 2, it is characterised in that the top board and middle mould of upper mould A horizontal support member laminating when, the side of the second arc structure is concordant with the bottom surface of horizontal support member, and opposite side is close to vertically Support member.

6. clipping 3D board-like materials hot bending die according to claim 2, it is characterised in that the level branch of the middle mould Support member is provided with the stopper slot that shape is adapted with board-like material to be processed.

7. clipping 3D board-like materials hot bending die according to claim 2, it is characterised in that the vertical support member is leaned on The nearly side for assigning hole is provided with the first guided way, described to assign the side of block to be provided with the first guiding being adapted to the first guided way Groove.

8. clipping 3D board-like materials hot bending die according to claim 2, it is characterised in that the vertical branch of the middle mould The top surface of support member is provided with locating piece, and the bottom surface of the top board is provided with the locating slot being adapted to locating piece.

9. clipping 3D board-like materials hot bending die according to claim 2, it is characterised in that the base plate of the lower mould Top surface is provided with the second guided way, and the bottom surface of the vertical support member of the middle mould is provided with second be adapted to the second guided way and is oriented to Groove.

10. clipping 3D board-like materials hot bending die according to claim 1, it is characterised in that the lower mould, middle mould with And the material of upper mould is graphite.