Die

Abstract

A die belongs to the technical field of automobile manufacturing devices. The mold is used for forming a to-be-machined part into the automobile battery box cover plate, and the to-be-machined part comprises an electrophoresis steel sheet and a raw material layer arranged on the electrophoresis steel sheet. The mold comprises an upper mold and a lower mold, and a silica gel sheet is arranged on the side, facing the upper mold, of the lower mold. A part to be machined is placed between the silica gel skin and the upper die, and the silica gel skin is used for making contact with the electrophoresis steel sheet. As the silica gel sheet is arranged between the electrophoresis steel sheet and the lower mold, the electrophoresis steel sheet is not in direct contact with the mold in a high-temperature state, and an electrophoresis layer of the electrophoresis steel sheet is basically not damaged when the cover plate is taken out by opening the mold after the preparation is completed. And moreover, the silica gel sheet has certain elasticity, the electrophoresis steel sheet and the silica gel sheet are more tightly contacted, the probability of material overflowing in the forming process can be reduced, and the forming quality of the cover plate can be further improved.

Description

Technical Field

[0001] This application relates to the technical field of automotive preparation devices, and more particularly, to a mold. Background Art

[0002] When manufacturing the cover plate of a new energy vehicle battery box, a mold is usually used. The glass fiber polyurethane material is placed in the cavity of the mold, and then heated and cured to form a cover plate with a specific shape.

[0003] To improve the quality of the cover plate, an electrophoretic steel thin plate can be placed in the cavity of the lower mold, and the polyurethane material is sprayed on the electrophoretic steel thin plate, and then heated and cured to form a cover plate containing the electrophoretic steel thin plate with a specific shape.

[0004] However, when using the existing mold to manufacture the cover plate containing the electrophoretic steel thin plate, the electrophoretic steel thin plate is in direct contact with the inner wall of the high-temperature mold. When the cover plate is taken out after the mold is opened, the electrophoretic layer of the electrophoretic steel thin plate is prone to cracks, affecting the appearance quality. Moreover, the electrophoretic steel thin plate is prone to deformation and has poor conformity with the mold, and it is prone to the problem of overflow during molding, affecting the appearance quality of the battery box cover plate. Summary of the Utility Model

[0005] Based on the above deficiencies, this application provides a mold to improve the problems of easy overflow and damage to the electrophoretic layer during the molding of the battery box cover plate using the mold in the related art.

[0006] This application is implemented as follows:

[0007] An example of this application provides a mold for forming a workpiece to be processed into a cover plate of an automotive battery box. The workpiece to be processed includes an electrophoretic steel thin plate and a raw material layer provided on the electrophoretic steel thin plate. The mold includes:

[0008] An upper mold and a lower mold, and a silicone skin is provided on the side of the lower mold facing the upper mold; the silicone skin and the upper mold are used to place the workpiece to be processed, and the silicone skin is used to contact the electrophoretic steel thin plate.

[0009] In the above implementation process, when using the above mold to manufacture the cover plate of the automotive battery box, since a silicone skin is provided on the side of the lower mold facing the upper mold, the electrophoretic steel thin plate can be placed on the silicone skin, and then raw materials such as glass fiber polyurethane material are sprayed on the electrophoretic steel thin plate, and then the upper mold and the lower mold are closed, heated and cured to form the cover plate. Since a silicone skin is provided between the electrophoretic steel thin plate and the lower mold, the electrophoretic steel thin plate is not in direct contact with the high-temperature mold. When the mold is opened and the cover plate is taken out after the preparation is completed, the electrophoretic layer of the electrophoretic steel thin plate is basically not damaged. Moreover, the silicone skin has a certain elasticity, and the electrophoretic steel thin plate is more conformable to the silicone skin, which can reduce the probability of overflow during the molding process, and thus can improve the molding quality of the cover plate.

[0010] In an alternative embodiment, the lower mold is provided with a plurality of adsorption holes, and the silica gel skin is adsorbed on one side of the lower mold facing the upper mold through the adsorption holes.

[0011] In the above implementation process, by providing a plurality of adsorption holes in the lower mold, the silica gel skin can be stably adsorbed at the lower mold through the adsorption holes, making the silica gel skin more flat and conforming to the lower mold, and further improving the forming quality of the cover plate.

[0012] In an alternative embodiment, the diameter of the adsorption holes is 1-2 mm.

[0013] In the above implementation process, with the diameter of the adsorption holes being 1-2 mm, it can improve the problem of low suction force due to too small a diameter of the adsorption holes, and can also improve the problem that if the diameter of the adsorption holes is too large, the silica gel skin at the adsorption holes is easily sucked into the adsorption holes, resulting in deformation of the silica gel skin, further improving the forming quality of the cover plate.

[0014] In an alternative embodiment, the lower mold has a cavity, the adsorption holes communicate with the cavity, and the silica gel skin is adsorbed on the inner wall of the cavity through the adsorption holes.

[0015] In the above implementation process, by arranging the adsorption holes at the position of the lower mold corresponding to the cavity, the silica gel skin in the cavity can be adsorbed and tightly attached to the inner wall of the cavity, thereby improving the forming quality of the cover plate.

[0016] In an alternative embodiment, both sides of the silica gel skin in the width direction extend out of the cavity; the lower mold is further provided with a detachable pressing plate, and the pressing plate presses both sides of the silica gel skin in the width direction against the lower mold.

[0017] In the above implementation process, pressing plates are arranged on both sides of the lower mold corresponding to the width direction of the silica gel skin, and both sides of the silica gel skin in the width direction can be pressed against the lower mold by using the pressing plates. When the silica gel skin is vacuum-adsorbed through the adsorption holes, the silica gel skin can be adsorbed more flatly and conformingly in the cavity.

[0018] In an alternative embodiment, scrolls are arranged on both sides of the lower mold corresponding to the length direction of the silica gel skin, and the lower mold is arranged between the two scrolls. Both sides of the silica gel skin in the length direction are wound and fixed on the scrolls.

[0019] In the above implementation process, scrolls are arranged on both sides of the lower mold corresponding to the length direction of the silica gel skin. By winding and fixing both sides of the silica gel skin in the length direction one by one on the scrolls, the silica gel skin can be tightened along the length direction. When the silica gel skin is vacuum-adsorbed through the adsorption holes, the silica gel skin can be adsorbed more flatly and conformingly in the cavity.

[0020] In an alternative embodiment, fixed cylinders protrude outwardly at positions corresponding to the axial two ends of the reel. The two ends of the reel rotatably extend into the fixed cylinders and can be selectively fixed to the fixed cylinders after rotating a set angle.

[0021] In the above implementation process, two fixed cylinders are provided on both sides of the lower mold corresponding to the length direction of the silicone skin. The two ends of the two reels can be correspondingly inserted into the corresponding fixed cylinders one by one. The two reels can rotate within the fixed drums to increase the tension of the silicone skin in the length direction, tighten the silicone skin, and can be fixed by the fixed cylinders after rotating a set angle to tighten the two ends of the silicone skin in the length direction.

[0022] In an alternative embodiment, the fixed cylinder is provided with a threaded hole and a fastening screw cooperating with the threaded hole. The fastening screw can selectively pass through the threaded hole and extend into the fixed cylinder to abut against the curved surface of the end of the reel, so as to fix the reel after rotating a set angle to the fixed cylinder.

[0023] In the above implementation process, a threaded hole is provided at the fixed cylinder, and the fastening screw cooperating with the threaded hole can be extended into the threaded hole to abut against the curved surface of the end of the reel, so as to clamp the reel after rotating a set angle and limit the continuous rotation of the reel.

[0024] In an alternative embodiment, along the circumferential direction of the fixed cylinder, a plurality of threaded holes are spacedly arranged on the fixed cylinder, and a plurality of fastening screws correspondingly pass through the threaded holes and abut against the curved surface of the end of the reel.

[0025] In the above implementation process, along the circumferential direction of the fixed cylinder, a plurality of threaded holes are spacedly arranged on the fixed cylinder, and a plurality of fastening screws correspondingly pass through the threaded holes and abut against the curved surface of the end of the reel, which can clamp the reel simultaneously by using a plurality of screws and limit the continuous rotation of the reel.

[0026] In an alternative embodiment, a plurality of heating water pipes are inserted into both the upper mold and the lower mold for heating the upper mold and the lower mold.

[0027] In the above implementation process, a plurality of heating water pipes are provided at the upper mold and the lower mold, and the heating medium in the heating water pipes can be used to heat the mold to a certain temperature, so that raw materials such as fiberglass polyurethane material placed between the upper and lower molds can be heated and cured to form a cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0029] Figure 1 It is a schematic plan view of the workpiece to be processed;

[0030] Figure 2 Front elevation schematic diagram of the mold provided for the example of this application;

[0031] Figure 3 Top view schematic diagram of the mold provided for the example of this application;

[0032] Figure 4 For Figure 3 Cross-sectional schematic diagram along the A-A direction in;

[0033] Figure 5 For Figure 4 Partial enlarged schematic diagram of part B in.

[0034] Icon: 100 - workpiece to be processed; 101 - electrophoretic steel sheet; 102 - raw material layer; 1 - mold; 10 - lower mold; 11 - cavity; 12 - adsorption hole; 13 - pressing plate; 14 - reel; 15 - fixed cylinder; 16 - fastening screw; 20 - upper mold; 30 - silicone skin; 31 - first side; 32 - second side; 33 - third side; 34 - fourth side; 40 - heating water pipe; D1 - width direction; D2 - length direction. Specific embodiments

[0035] Hereinafter, embodiments of the technical solution of this application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this application, and thus are only examples and cannot be used to limit the protection scope of this application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and the above accompanying drawings description are intended to cover non-exclusive inclusion.

[0037] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality" means more than two unless otherwise specifically defined.

[0038] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0039] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "middle", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "bottom", "inner", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application.

[0040] In the process of manufacturing new energy vehicles, molds are usually used to manufacture corresponding parts. For example, when manufacturing the cover plate of the battery box of a new energy vehicle, raw materials such as fiberglass polyurethane materials are usually sprayed into the cavity of the mold, and then heated and cured to form a cover plate with a specific shape.

[0041] To improve the quality of the cover plate, an electrophoretic steel sheet 101 is usually placed in the cavity of the mold, and raw materials such as polyurethane materials are sprayed on the electrophoretic steel sheet 101 to form a raw material layer 102, and then heated and cured to form a cover plate with a specific shape containing the electrophoretic steel sheet 101.

[0042] However, when using the existing mold to manufacture the cover plate containing the electrophoretic steel sheet 101, the electrophoretic steel sheet 101 is in direct contact with the inner wall of the high-temperature mold. When the cover plate is taken out after the mold is opened, the electrophoretic layer of the electrophoretic steel sheet 101 is prone to cracks, affecting the appearance quality.

[0043] Moreover, the electrophoretic steel sheet 101 is prone to deformation and has poor conformity with the mold. During molding, the problem of overflow of materials is likely to occur, affecting the appearance quality of the battery box cover plate.

[0044] Therefore, the present application provides a mold 1, which can, to a certain extent, improve the problems of material overflow and damage to the electrophoretic layer that are likely to occur when using the mold to form the battery box cover plate in the related art. To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0045] The exemplary embodiment of the present application provides a mold 1 for forming a workpiece 100 to be processed into a cover plate of an automotive battery box. Please refer to Figure 1 , the workpiece 100 to be processed includes an electrophoretic steel sheet 101 and a raw material layer 102 provided on the electrophoretic steel sheet 101.

[0046] Please refer to Figure 2 and Figure 3 , the mold 1 includes a lower mold 10 and an upper mold 20. A silica gel skin 30 is provided on the side of the lower mold 10 facing the upper mold 20. The silica gel skin 30 and the upper mold 20 are used to place the workpiece 100 to be processed, and the silica gel skin 30 is used to contact the electrophoretic steel sheet 101.

[0047] When preparing the cover plate of the automotive battery box using the above-mentioned mold 1, since the silica gel skin 30 is provided on the side of the lower mold 10 facing the upper mold 20, the electrophoretic steel sheet 101 can be placed on the silica gel skin 30, and then raw materials such as glass fiber polyurethane material are sprayed on the electrophoretic steel sheet 101 to form a raw material layer 102. Then, the upper mold 20 and the lower mold 10 are closed, heated and cured to form the cover plate.

[0048] Since the silica gel skin 30 is provided between the electrophoretic steel sheet 101 and the lower mold 10, the electrophoretic steel sheet 101 does not directly contact the lower mold 10 in a high-temperature state. There is a raw material layer 102 between the electrophoretic steel sheet 101 and the upper mold 20, and the electrophoretic steel sheet 101 will not directly contact the upper mold 20 in a high-temperature state either. Therefore, when the mold is opened to take out the cover plate after preparation, the electrophoretic layer of the electrophoretic steel sheet 101 basically does not have damages such as cracks and tears.

[0049] Moreover, if the electrophoretic steel sheet 101 is directly placed on the lower mold 10, making the electrophoretic steel sheet 101 directly contact the mold surface of the lower mold 10, the electrophoretic steel sheet 101 is prone to deformation, warping is likely to occur at the lower mold 10, and a large gap is likely to be formed between the electrophoretic steel sheet 101 and the mold surface of the lower mold 10. Generally, through holes are provided in the electrophoretic steel sheet 101. When raw materials such as glass fiber polyurethane material are sprayed on the electrophoretic steel sheet 101, during the forming process, the raw materials such as glass fiber polyurethane material are likely to pass through the through holes and enter between the electrophoretic steel sheet 101 and the mold surface of the lower mold 10, forming overflow materials, which affect the quality of the cover plate.

[0050] In the mold 1 provided by the example of the present application, the silica gel skin 30 is provided at the lower mold 10, and the electrophoretic steel sheet 101 is placed on the silica gel skin 30. The contact between the electrophoretic steel sheet 101 and the silica gel skin 30 is more compliant, and it is not easy to form a gap between the electrophoretic steel sheet 101 and the silica gel skin 30, which can reduce the probability of overflow materials occurring during the forming process, and thus can improve the forming quality of the cover plate.

[0051] The following further describes the lower mold 10, the upper mold 20 and the silica gel skin 30 in the mold 1 provided by the example of the present application with reference to the accompanying drawings.

[0052] The mold 1 is provided with a lower mold 10 and an upper mold 20, and the lower mold 10 and the upper mold 20 are used to place the workpiece 100 to be processed. After placing the workpiece 100 on the lower mold 10, the upper mold 20 is pressed down on the lower mold 10, the mold is closed, heated and cured, and the workpiece 100 can be formed into a cover plate of a specific structure for the automotive battery box.

[0053] The present application does not limit the specific structures of the lower mold 10 and the upper mold 20. In some possible embodiments, please refer to Figure 4 and Figure 5, the lower mold 10 is a female mold, and is provided with a cavity 11 for accommodating the workpiece 100 to be processed and the silica gel skin 30.

[0054] The upper mold 20 can be a male mold and is provided with a boss that can extend into the cavity 11. Alternatively, the upper mold 20 is not provided with a boss, and the upper mold 20 can be directly covered on the cavity 11 of the lower mold 10, so that raw materials such as fiberglass polyurethane material can be heated and cured in the closed cavity formed by the upper mold 20 and the lower mold 10 to form a cover plate with the same outer shape structure as the cavity.

[0055] Further, in order to facilitate the flat and stable placement of the silica gel skin 30 in the cavity 11, in some possible embodiments, please refer to Figure 5 , adsorption holes 12 can be provided at the lower mold 10.

[0056] Exemplarily, a plurality of adsorption holes 12 are evenly spaced at the lower mold 10.

[0057] The adsorption holes 12 communicate with the cavity 11. When the silica gel skin 30 is placed in the cavity 11, an external vacuum pump can be used to evacuate the gap between the silica gel skin 30 and the inner wall of the cavity 11 through the adsorption holes 12, so as to flatly and stably adsorb the silica gel skin 30 in the cavity 11 and make it fit with the inner wall of the cavity 11.

[0058] In order to improve the adsorption quality, in some possible embodiments, the diameter of the adsorption holes 12 can be 1-2 mm.

[0059] Exemplarily, the diameter of the adsorption holes 12 can be one of 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm or 2 mm or within the range between any two of them.

[0060] If the diameter of the adsorption holes 12 is less than 1 mm, the adsorption force on the silica gel skin 30 is small, which will affect the flatness and stability of the silica gel skin 30 in the cavity 11.

[0061] If the diameter of the adsorption holes 12 is greater than 2 mm, the adsorption force on the silica gel skin 30 is large, and it is easy to adsorb the part of the silica gel skin 30 corresponding to the adsorption holes 12 into the adsorption holes 12, causing a depression at the position of the silica gel skin 30 corresponding to the adsorption holes 12. When the electrophoretic steel sheet 101 and the raw material layer 102 are sequentially stacked on the silica gel skin 30 for molding later, it is easy to cause the electrophoretic steel sheet 101 to deform, resulting in a bulge at the position of the formed cover plate corresponding to the adsorption holes 12, affecting the quality of the cover plate.

[0062] The silica gel skin 30 has a first side 31 and a second side 32 opposite to each other in the width direction D1, and a third side 33 and a fourth side 34 opposite to each other in the length direction D2.

[0063] Further, in order to facilitate the smooth and stable attachment of the silica gel skin 30 to the inner wall of the cavity 11 through the adsorption holes 12, in some possible embodiments, please refer to Figures 2 to 5 , the first side 31 and the second side 32 in the width direction D1 of the silica gel skin 30 extend out of the cavity 11. The first side and the second side 32 are laid on the top surfaces of the templates of the lower mold 10 corresponding to the first side 31 and the second side 32. A pressing plate 13 is also detachably connected to the templates of the lower mold 10 corresponding to the first side 31 and the second side 32. The pressing plate 13 presses the first side 31 and the second side 32 of the silica gel skin 30 against the top surfaces of the corresponding templates.

[0064] Exemplarily, a first threaded hole is provided in the top surface of the template, and first screws are provided at the edges of the pressing plate 13. After the two pressing plates 13 are respectively pressed on the first side 31 and the second side 32 of the silica gel skin 30, the first screws are used to pass through the first threaded holes to fix the pressing plate 13 at the lower mold 10.

[0065] Exemplarily, the templates of the lower mold 10 corresponding to the pressing plate 13 can be set to be concave structures, so that when the pressing plate 13 is fixed on the template, the top end of the pressing plate 13 does not protrude from the top of the template, so that the upper mold 20 can cover the template of the lower mold 10 to enclose a forming cavity with a specific size.

[0066] Further, in order to facilitate the smooth and stable adsorption of the silica gel skin 30 to the inner wall of the cavity 11 by using the adsorption holes 12, in some possible embodiments, the third side 33 and the fourth side 34 in the length direction of the silica gel skin 30 can be fixed.

[0067] Exemplarily, a reel 14 can be provided on both sides of the lower mold 10 along the length direction D2, and the third side 33 and the fourth side 34 in the length direction of the silica gel skin 30 can be respectively wound and fixed on the corresponding reels 14.

[0068] Further, in order to facilitate the adjustment of the tension in the length direction D2 of the silica gel skin 30, the silica gel skin 30 is tightened along the length direction D2 by using the two reels 14. In one possible embodiment, two outwardly extending fixed cylinders 15 can be provided on both sides of the lower mold 10 along the length direction D2, and the two fixed cylinders 15 correspond to the axial ends of the reel 14. The axial ends of the reel 14 are rotatably inserted into the two fixed cylinders 15 respectively and can be selectively fixed to the fixed cylinders 15 after rotating a set angle.

[0069] Exemplarily, the third side 33 of the silica gel skin 30 is wound and fixed to one of the reels 14, and the fourth side 34 of the silica gel skin 30 is wound and fixed to the other reel 14. At least one of the two reels 14 rotates and winds up, so that the tension of the silica gel skin 30 in the length direction D2 increases to tighten the silica gel skin 30. Then, the reel 14 is fixed to the fixed cylinder 15 to limit the continuous rotation of the reel 14.

[0070] Further, in a possible embodiment, threaded holes (not shown in the figure) and fastening screws 16 that cooperate with the threaded holes can be provided at each fixed cylinder 15. The fastening screws 16 can optionally pass through the threaded holes and extend into the fixed cylinder 15 to abut against the curved surface at the end of the reel 14, so as to fix the reel 14 after rotating a set angle to the fixed cylinder 15 and limit the continuous rotation of the reel 14.

[0071] In order to further enhance the fastening effect of the reel 14 at the fixed cylinder 15, in a possible embodiment, along the circumferential direction of the fixed cylinder 15, a plurality of threaded holes are spacedly arranged on the fixed cylinder 15, and a plurality of fastening screws 16 respectively pass through the threaded holes and abut against the curved surface at the end of the reel 14. That is, the plurality of fastening screws 16 are spacedly distributed along the circumferential direction of the end of the reel 14, and jointly clamp the reel 14 to limit the rotation of the reel 14.

[0072] In order to facilitate fixing the fixed cylinder 15 to the lower mold 10, in a possible embodiment, a connecting rod can be provided on the side of the fixed cylinder 15 facing the lower mold 10, and the other end of the connecting rod is welded to the side plate of the lower mold 10.

[0073] In some possible embodiments, a plurality of heating water pipes 40 can be inserted into the lower mold 10 and the upper mold 20 for heating the upper mold 20 and the lower mold 10, so that the raw materials placed between the upper mold 20 and the lower mold 10 can be heated and cured to form a cover plate.

[0074] In some possible embodiments, the mold 1 can also be provided with a mold base.

[0075] Further, in order to facilitate setting the lower mold 10 on the mold base, the mold base can be set as an installation table, and the lower mold 10 is installed on the installation table.

[0076] Further, in order to facilitate closing the upper mold 20 close to the lower mold 10 and opening the upper mold 20 away from the lower mold 10, in some possible embodiments, the mold 1 can also be provided with a lifting mechanism (not shown in the figure).

[0077] Exemplarily, the lifting mechanism can drive the upper mold 20 to lift through a hydraulic press or a cylinder.

[0078] Further, in order to facilitate the arrangement of the lifting mechanism above the lower die 10 to drive the upper die 20 to move up and down by the lifting mechanism, in some possible embodiments, a plurality of upper support beams may be arranged above the installation table, and the lifting mechanism may be fixed on the support beams. At the same time, the output shaft of the lifting mechanism can penetrate downward through the gaps between the plurality of upper support beams, so as to facilitate the connection of the output shaft to the upper die 20 and drive the upper die 20 to move up and down.

[0079] Further, in order to improve the movement stability of the upper die 20, a guiding mechanism (not shown in the figure) may be arranged at the upper die 20. The guiding mechanism includes a connecting plate which is slidably connected to the column of the die carrier.

[0080] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mold for forming a workpiece to be processed into a cover plate of an automobile battery box, wherein the workpiece to be processed comprises an electrophoretic steel sheet and a raw material layer arranged on the electrophoretic steel sheet, characterized in that: The mold comprises: An upper mold and a lower mold, wherein a silicone skin is provided on the side of the lower mold facing the upper mold; the workpiece to be processed is placed between the silicone skin and the upper mold, and the silicone skin is used to contact the electrophoresis steel sheet.

2. The mold according to claim 1, characterized in that: The lower mold is provided with a plurality of adsorption holes, and the silicone skin is adsorbed on a side of the lower mold facing the upper mold through the adsorption holes.

3. The mold according to claim 2, characterized in that: The diameter of the adsorption hole is 1-2 mm.

4. The mold according to claim 2, characterized in that: The lower mold has a cavity, the adsorption hole is connected to the cavity, and the silicone skin is adsorbed on the inner wall of the cavity through the adsorption hole.

5. The mold according to claim 4, characterized in that: Both sides of the silicone skin in the width direction extend out of the mold cavity; the lower mold is also provided with a detachable clamping plate, and the clamping plate presses both sides of the silicone skin in the width direction against the lower mold.

6. The mold according to claim 4 or 5, characterized in that: The lower mold is provided with reels on both sides corresponding to the length direction of the silicone skin, the lower mold is arranged between the two reels, and the two sides of the silicone skin in the length direction are wound and fixed on the reels.

7. The mold according to claim 6, characterized in that: The lower mold has fixed cylinders extending outwardly at positions corresponding to the axial ends of the reel. The two ends of the reel can be rotatably extended into the fixed cylinders and can be selectively fixed to the fixed cylinders after being rotated by a set angle.

8. The mold according to claim 7, characterized in that: The fixed cylinder is provided with a threaded hole and a fastening screw cooperating with the threaded hole. The fastening screw can selectively pass through the threaded hole and extend into the fixed cylinder to abut against the curved surface of the end of the reel to fix the reel to the fixed cylinder after rotating at a set angle.

9. The mold according to claim 8, characterized in that: Along the circumference of the fixed cylinder, the fixed cylinder is provided with a plurality of threaded holes at intervals, and a plurality of fastening screws pass through the threaded holes one by one and abut against the curved surface of the end of the reel.

10. The mold according to claim 1, characterized in that: A plurality of heating water pipes are inserted into the upper mold and the lower mold for heating the upper mold and the lower mold.

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