Drawing die

Abstract

The utility model relates to the technical field of dies, and discloses a drawing die which comprises a first forming assembly, a second forming assembly and a third forming assembly. The second forming assembly comprises a second die holder, a male die and a blank holder, the second die holder is matched with the first die holder, the male die is matched with the female die, the blank holder surrounds the male die, and the male die and the blank holder are both detachably connected with the second die holder. According to the drawing die provided by the invention, the problem that the production cost is relatively high due to the fact that a new drawing die is integrally designed to manufacture parts of a new vehicle type in related technologies can be solved.

Description

Technical Field

[0001] This application relates to the field of mold technology, and in particular to a drawing mold. Background Technology

[0002] With the rapid development of the new energy vehicle industry, market competition has become increasingly fierce. In order to gain a higher market share, manufacturers are accelerating the pace of model iteration and updates. Since some automotive parts are manufactured using drawing dies, the corresponding drawing dies also need to be updated when vehicle models are updated.

[0003] In related technologies, new drawing dies are generally designed as a whole to manufacture parts for new car models. This leads to an increasing number of old drawing dies used for EOP (End-of-Production) of old car models, resulting in higher production costs. Utility Model Content

[0004] This application provides a drawing die that can improve the problem of high production costs caused by designing new drawing dies to manufacture parts for new car models in related technologies.

[0005] This application provides a drawing die, including:

[0006] A first molding assembly includes a first mold base and a die, wherein the die is detachably connected to the first mold base;

[0007] The second forming component includes a second mold base, a punch, and a pressure ring. The second mold base is adapted to the first mold base, the punch is adapted to the die, the pressure ring surrounds the punch, and both the punch and the pressure ring are detachably connected to the second mold base.

[0008] In some embodiments, the second mold base is provided with a plurality of clearance holes, which are spaced apart; the second molding component also includes a plurality of push rods, which are arranged in a one-to-one correspondence with the plurality of clearance holes, and the push rods are movably disposed in the clearance holes, with at least a portion of the push rods abutting against the end of the pressure ring away from the first mold base.

[0009] In some embodiments, the second mold base is provided with a plurality of connecting portions, and the second molding assembly further includes a limiting member, the limiting member including a fixing portion and a limiting portion connected together, the fixing portion being detachably connected to a portion of the connecting portions, and the fixing portion being slidably inserted through the pressure ring, the limiting portion being located on the side of the pressure ring away from the second mold base.

[0010] In some embodiments, the connecting portion includes a connecting threaded hole, the fixing portion includes a limiting stud, and the connecting threaded hole is threadedly engaged with the limiting stud.

[0011] In some embodiments, the first mold base includes a stepped upper process surface and an upper mounting surface, the upper mounting surface protruding from the upper process surface in the direction toward the second mold base, and the upper mounting surface being fitted with the die cavity; and / or, the second mold base includes a stepped lower process surface and a lower mounting surface, the lower mounting surface protruding from the lower process surface in the direction toward the first mold base, and the lower mounting surface being fitted with the punch.

[0012] In some embodiments, the second mold base is provided with a receiving groove, and the punch is disposed in the receiving groove.

[0013] In some embodiments, the opposite side walls of the receiving groove are provided with openings.

[0014] In some embodiments, the first mold base is provided with a first guide portion, and the pressure ring is provided with a first mating portion and a second mating portion. The first guide portion and the first mating portion are slidably engaged, and the sliding direction of the first mating portion relative to the first guide portion is parallel to the arrangement direction of the first mold base and the second mold base. The second mating portion is slidably disposed in the opening, and the sliding direction of the second mating portion relative to the sidewall of the opening is parallel to the arrangement direction of the first mold base and the second mold base.

[0015] In some embodiments, both the number of receiving slots and the number of punches are multiple, and the multiple receiving slots are configured in a one-to-one correspondence with the multiple punches.

[0016] In some embodiments, the first mold base is provided with a first guide portion, the second mold base is provided with a second guide portion, the first guide portion and the second guide portion are slidably engaged, and the sliding direction of the second guide portion relative to the first guide portion is parallel to the arrangement direction of the first mold base and the second mold base.

[0017] In some embodiments, the second molding assembly further includes a stop member, at least a portion of the inner wall of the receiving groove is slidably engaged with the pressure ring, one of the second mold base and the pressure ring is detachably connected to the stop member, and the other of the second mold base and the pressure ring is slidably engaged with the stop member.

[0018] In some embodiments, the second mold base is provided with a plurality of support ribs, which are spaced apart. The support ribs are located at one end of the second mold base away from the first mold base. The punch has a first orthographic projection on the surface of the second mold base away from the first mold base. At least a portion of the support ribs have a second orthographic projection on the surface of the second mold base away from the first mold base, and the second orthographic projection and the first orthographic projection have an overlapping portion.

[0019] In some embodiments, the punch includes a main die, a split die, and a mounting base. The main die is detachably connected to the second die base, the split die is connected to the mounting base, and the mounting base is detachably connected to the second die base.

[0020] The drawing die provided in this application has the following advantages: Since the die is detachably connected to the first die base, and the punch and blank holder are detachably connected to the second die base, when new parts need to be produced, it is only necessary to remove the old die from the first die base, remove the old punch and the old blank holder from the second die base, install the new die for producing the new parts on the first die base, and install the new punch and the new blank holder for producing the new parts on the second die base. This achieves the reuse of the first and second die bases and reduces production costs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a drawing die in one embodiment of this application;

[0023] Figure 2 yes Figure 1 A top view of the second forming component in the drawing die shown;

[0024] Figure 3 yes Figure 2 A partial structural schematic diagram of the second molding component is shown;

[0025] Figure 4 yes Figure 3 Another view of the second molding component shown;

[0026] Figure 5 yes Figure 4 A magnified view of a section at point A in the middle;

[0027] Figure 6 yes Figure 2 The diagram shows the structure of the second mold base in the second molding assembly.

[0028] Figure 7 yes Figure 6 The diagram shows the interaction between the second mold base and the ejector pin.

[0029] Figure 8 This is a schematic diagram of the drawing die structure in another embodiment of this application;

[0030] Figure 9 yes Figure 8 A top view of the second forming component in the drawing die shown;

[0031] Figure 10 yes Figure 9 A partial structural schematic diagram of the second molding component is shown;

[0032] Figure 11 yes Figure 10 A magnified view of a section at point B in the middle;

[0033] Figure 12 yes Figure 10 The diagram shows the structure of the second mold base in the second molding assembly.

[0034] Figure 13 yes Figure 10 A bottom view of the second mold base and punch in the second molding assembly shown;

[0035] Figure 14 yes Figure 10 The bottom view of the second mold base in the second molding assembly shown.

[0036] The markings in the diagram mean:

[0037] 10. First mold base; 11. First guide section;

[0038] 20. Second mold base; 201. Receiving groove; 202. Opening; 21. Clearance hole; 22. Lower process surface; 23. Lower mounting surface; 24. Second guide part; 25. Support rib; 26. Third guide part;

[0039] 30. Punch; 31. Main mold; 32. Split mold; 33. Mounting base;

[0040] 40. Pressure ring; 41. First mating part; 42. Second mating part;

[0041] 50. Hydraulic press; 51. Push rod;

[0042] 60. Limiting component; 61. Fixing part; 62. Limiting part;

[0043] 70. Stop element. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0045] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0047] In this specification, references to "one embodiment," "some embodiments," or simply "embodiment" mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. Furthermore, in one or more embodiments, specific features, structures, or characteristics may be combined in any suitable manner.

[0048] To illustrate the technical solution of this application, the following description is provided in conjunction with specific accompanying drawings and embodiments.

[0049] With the rapid development of the new energy vehicle industry, market competition has become increasingly fierce. In order to gain a higher market share, manufacturers are accelerating the pace of model iteration and updates. Since some automotive parts are manufactured using drawing dies, the corresponding drawing dies also need to be updated when vehicle models are updated.

[0050] In related technologies, new drawing dies are generally designed as a whole to manufacture parts for new car models. This leads to an increasing number of old drawing dies for EOP of old car models, resulting in higher production costs.

[0051] In view of this, the present application provides a drawing die. Since the die is detachably connected to the first die holder, and the punch and blank holder are detachably connected to the second die holder, when new parts need to be produced, it is only necessary to remove the old die from the first die holder, remove the old punch and the old blank holder from the second die holder, install the new die for producing the new parts on the first die holder, and install the new punch and the new blank holder for producing the new parts on the second die holder. This realizes the reuse of the first and second die holders, reduces production costs, and solves the problem of the old die holders of EOP models not being recyclable.

[0052] Please refer to Figures 1 to 4 This application provides a drawing die, including a first forming component and a second forming component.

[0053] The first molding assembly includes a first mold base 10 and a die (not shown in the figure), the die being detachably connected to the first mold base 10.

[0054] The die cavity can be detachably connected to the first mold base 10 through snap-fit, bolt connection, screw connection, or clip connection. For example, the die cavity can be detachably connected to the first mold base 10 through screw connection, and positioned by positioning holes and positioning pins.

[0055] The second forming assembly includes a second mold base 20, a punch 30, and a pressure ring 40. The second mold base 20 is adapted to the first mold base 10, the punch 30 is adapted to the die, and the pressure ring 40 surrounds the punch 30. Both the punch 30 and the pressure ring 40 are detachably connected to the second mold base 20.

[0056] The punch 30 and the pressure ring 40 can be detachably connected to the second mold base 20 by means of snap-fit, bolt connection, screw connection or clip connection. For example, the punch 30 and the pressure ring 40 can be detachably connected to the second mold base 20 by screw connection, and are positioned by positioning holes and positioning pins.

[0057] The first mold base 10 can be the upper mold, and the second mold base 20 can be the lower mold. When it is necessary to produce new parts, it is only necessary to remove the old die from the first mold base 10, and remove the old punch 30 and the old pressure ring 40 from the second mold base 20. Then, a new die for producing new parts is installed on the first mold base 10, and a new punch 30 and a new pressure ring 40 for producing new parts are installed on the second mold base 20. This achieves the reuse of the first mold base 10 and the second mold base 20, reducing production costs.

[0058] The first mold base 10 can be provided with multiple screw holes and multiple positioning holes. The old die is detachably connected to the first mold base 10 through a portion of the screw holes and a portion of the positioning holes, and the new die is detachably connected to the first mold base 10 through another portion of the screw holes and another portion of the positioning holes.

[0059] Alternatively, screw holes and positioning holes can be provided on the first mold base 10. The old die can be detachably connected to the first mold base 10 through the screw holes and positioning holes. When new parts need to be produced, new screw holes and new positioning holes can be machined on the first mold base 10. The new die can be detachably connected to the first mold base 10 through the new screw holes and new positioning holes.

[0060] Multiple screw holes and multiple positioning holes can be provided on the second mold base 20. The old punch 30 and the old pressure ring 40 are detachably connected to the second mold base 20 through some screw holes and some positioning holes. The new punch 30 and the new pressure ring 40 are detachably connected to the second mold base 20 through another part of screw holes and another part of positioning holes.

[0061] Alternatively, screw holes and positioning holes can be provided on the second mold base 20. The old punch 30 and the old pressure ring 40 can be detachably connected to the second mold base 20 through the screw holes and positioning holes. When new parts need to be produced, new screw holes and new positioning holes can be machined on the second mold base 20. The new punch 30 and the new pressure ring 40 can be detachably connected to the second mold base 20 through the new screw holes and new positioning holes.

[0062] As can be seen from the above, the drawing die provided in this application embodiment is detachably connected to the first die holder 10, and the punch 30 and the blank holder 40 are detachably connected to the second die holder 20. Therefore, when it is necessary to produce new parts, it is only necessary to remove the old die from the first die holder 10, remove the old punch 30 and the old blank holder 40 from the second die holder 20, install the new die for producing new parts on the first die holder 10, and install the new punch 30 and the new blank holder 40 for producing new parts on the second die holder 20. This realizes the reuse of the first die holder 10 and the second die holder 20 and reduces production costs.

[0063] The drawing die provided in this application embodiment can design the first die holder 10 and the second die holder 20 as standard die holders, so as to achieve the universality of similar parts and thus reduce the cost of die investment.

[0064] Please refer to this as well. Figures 5 to 7In this embodiment, the second mold base 20 is provided with a plurality of clearance holes 21, which are spaced apart; the second molding component also includes a plurality of push rods 51, which are provided one-to-one with the plurality of clearance holes 21. The push rods 51 are movably disposed in the clearance holes 21, and at least a portion of the push rods 51 abut against the end of the pressure ring 40 away from the first mold base 10.

[0065] By adopting the above solution, a portion of the push rods 51 can be used to lift the old pressure ring 40, and another portion of the push rods 51 can be used to lift the new pressure ring 40. This allows the push rods 51 to better adapt to the old pressure ring 40 and the new pressure ring 40, meeting the needs of push rods 51 for pressure rings 40 of different shapes.

[0066] Understandably, the push rod 51 is connected to the hydraulic press 50, and the push rod 51 is used to lift the pressure ring 40 so that it can be reset.

[0067] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 6 The first mold base 10 includes a stepped upper process surface (not shown in the figure) and an upper mounting surface (not shown in the figure). In the direction toward the second mold base 20, the upper mounting surface protrudes from the upper process surface and is fitted with the die cavity. And / or, the second mold base 20 includes a stepped lower process surface 22 and a lower mounting surface 23. In the direction toward the first mold base 10, the lower mounting surface 23 protrudes from the lower process surface 22 and is fitted with the punch 30.

[0068] By adopting the above scheme, it is convenient to process the upper mounting surface, control the flatness of the upper mounting surface, and facilitate the connection of the die to the upper mounting surface; and / or, it is convenient to process the lower mounting surface 23, control the flatness of the lower mounting surface 23, and facilitate the connection of the punch 30 and the pressure ring 40 to the lower mounting surface 23.

[0069] For example, the distance between the upper mounting surface and the upper process surface is 10mm-15mm; and / or, the distance between the lower mounting surface 23 and the lower process surface 22 is 10mm-15mm.

[0070] It is understandable that both the upper and lower mounting surfaces 23 can be designed according to their maximum dimensions to accommodate the installation of dies, punches 30, and pressure rings 40 for components of different sizes.

[0071] Please refer to Figures 1 to 6 In this embodiment, the second mold base 20 is provided with a receiving groove 201, and the punch 30 is disposed in the receiving groove 201.

[0072] By adopting the above scheme, it is convenient to set the position of the punch 30.

[0073] For example, in this embodiment, one receiving slot 201 is provided, and the second mold base 20 is a single-slot mold base.

[0074] To better accommodate longer parts, openings 202 are provided on both opposite side walls of the receiving groove 201.

[0075] This design allows for the inclusion of components with longer wheelbases, such as side panels and door panels, through the opening 202, thus improving the versatility of the second mold base 20.

[0076] It is understandable that openings 202 are provided on both sides of the accommodating groove 201, while other side walls are still designed with enclosures to ensure the strength of the second mold base 20.

[0077] Optionally, the first mold base 10 is provided with a first guide portion 11, and the pressure ring 40 is provided with a first mating portion 41 and a second mating portion 42. The first guide portion 11 and the first mating portion 41 are slidably engaged, and the sliding direction of the first mating portion 41 relative to the first guide portion 11 is parallel to the arrangement direction of the first mold base 10 and the second mold base 20. The second mating portion 42 is slidably disposed in the opening 202, and the sliding direction of the second mating portion 42 relative to the side wall of the opening 202 is parallel to the arrangement direction of the first mold base 10 and the second mold base 20.

[0078] This configuration allows for better guidance of the first mold base 10, the pressure ring 40, and the second mold base 20.

[0079] It is understandable that when the arrangement direction of the first mold base 10 and the second mold base 20 is from top to bottom, the sliding direction of the first mating part 41 relative to the first guide part 11 and the sliding direction of the second mating part 42 relative to the side wall of the opening 202 are both parallel to the direction from top to bottom.

[0080] For example, the first guide portion 11 may be a protrusion located at the end of the first mold base 10, the first mating portion 41 may be a groove, the first guide portion 11 may be slidably mated with the side wall of the first mating portion 41, and the second mating portion 42 may be a protrusion located at the end of the pressure ring 40.

[0081] Please refer to Figure 4 and Figure 5 In this embodiment, the punch 30 includes a main mold 31, a split mold 32 and a mounting base 33. The main mold 31 is detachably connected to the second mold base 20, the split mold 32 is connected to the mounting base 33, and the mounting base 33 is detachably connected to the second mold base 20.

[0082] By adopting the above solution, the main mold 31, the split mold 32 and the mounting base 33 can better adapt to the shape of the parts. When producing different parts, only the punch 30 needs to be replaced as a whole.

[0083] It is understandable that the main mold 31 and the second mold base 20, and the mounting base 33 and the second mold base 20 can be detachably connected by means of snap-fit, bolt connection, screw connection or buckle connection.

[0084] For example, the split mold 32 can be set as a crescent-shaped base, and the mounting base 33 can be an insert, etc.

[0085] In other embodiments, the main body mold 31 and the split mold 32 may be designed as a single unit.

[0086] Please refer to Figures 8 to 12 In another embodiment, there are multiple receiving slots 201 and multiple punches 30, and the multiple receiving slots 201 are configured in a one-to-one correspondence with the multiple punches 30.

[0087] By adopting the above scheme, multiple parts can be produced simultaneously through multiple receiving slots 201 and multiple punches 30.

[0088] For example, the number of receiving slots 201 and the number of punches 30 are both two, and the second mold base 20 is a double-slot mold base. The second mold base 20 is surrounded on all four sides and can be used for double-sheet part processes.

[0089] Optionally, the first mold base 10 is provided with a first guide portion 11, and the second mold base 20 is provided with a second guide portion 24. The first guide portion 11 and the second guide portion 24 are slidably engaged, and the sliding direction of the second guide portion 24 relative to the first guide portion 11 is parallel to the arrangement direction of the first mold base 10 and the second mold base 20.

[0090] This setup allows for relatively easy guidance of the first mold base 10 and the second mold base 20.

[0091] For example, the first guide portion 11 may be a protrusion located at the end of the first mold base 10, and the second guide portion 24 may be at least a part of the sidewall of the groove, with the first guide portion 11 and the second guide portion 24 slidingly engaged.

[0092] Please refer to Figure 9 Optionally, the second molding assembly further includes a stop member 70, at least a portion of the inner wall of the receiving groove 201 is slidably engaged with the pressure ring 40, one of the second mold base 20 and the pressure ring 40 is detachably connected to the stop member 70, and the other of the second mold base 20 and the pressure ring 40 is slidably engaged with the stop member 70.

[0093] With this setup, different stop pieces 70 can be replaced according to different pressure rings 40, and compensation can be performed through the stop pieces 70, thereby guiding different pressure rings 40.

[0094] It is understood that either the first mold base 10 or the pressure ring 40 can be detachably connected to the stop member 70 by means of snap-fit, bolt connection, screw connection, or clip connection. One or more stop members 70 may be provided. The interior of the pressure ring 40 guides the punch 30. The pressure ring 40 may employ an external guide, with its circumference guiding the third guide portion 26 within the receiving groove 201 of the second mold base 20.

[0095] Please refer to Figure 10 and Figure 11 In another embodiment, the second mold base 20 is provided with a plurality of connecting parts (not shown in the figure), and the second molding assembly further includes a limiting member 60. The limiting member 60 includes a fixing part 61 and a limiting part 62 connected to each other. The fixing part 61 is detachably connected to a portion of the connecting parts, and the fixing part 61 is slidably passed through the pressure ring 40. The limiting part 62 is located on the side of the pressure ring 40 away from the second mold base 20.

[0096] With this configuration, the pressure ring 40 can be limited by the limiting member 60 to prevent the ejector rod 51 from lifting the pressure ring 40 too high. At the same time, the fixing part 61 can be adapted to connect different connecting parts for the old and new pressure rings 40, so that pressure rings 40 of different sizes can be matched with the second mold base 20. This makes the limiting member 60 better adaptable to the old and new pressure rings 40, and the design of the pressure ring 40 is more flexible.

[0097] It should be noted that the fixing part 61 can be detachably connected to the connecting part by means of snap-fit, bolt connection, screw connection or buckle connection.

[0098] Optionally, the connecting part includes a connecting threaded hole, and the fixing part 61 includes a limiting stud, with the connecting threaded hole and the limiting stud threadedly engaged.

[0099] This design allows for easy connection of the fixing part 61 and the connecting part, and also makes it easy to separate the fixing part 61 and the connecting part.

[0100] Please refer to Figures 9 to 14 In another embodiment, the second mold base 20 is provided with a plurality of support ribs 25, which are spaced apart. The support ribs 25 are located at one end of the second mold base 20 away from the first mold base 10. The punch 30 has a first orthographic projection on the surface of the second mold base 20 away from the first mold base 10. At least some of the support ribs 25 have a second orthographic projection on the surface of the second mold base 20 away from the first mold base 10, and the second orthographic projection and the first orthographic projection have an overlapping portion.

[0101] By adopting the above scheme, different support ribs 25 can be used to support different punches 30, enhancing the applicability of support ribs 25 of different sizes of the same type of parts, and ensuring that the second mold base 20 has sufficient strength.

[0102] The support rib 25 can be T-shaped, with a spacing of approximately 300mm between two adjacent support members. The support rib 25 can support only the edge of the punch 30.

[0103] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A drawing die, characterized in that, include: A first molding assembly includes a first mold base and a die, wherein the die is detachably connected to the first mold base; The second forming component includes a second mold base, a punch, and a pressure ring. The second mold base is adapted to the first mold base, the punch is adapted to the die, the pressure ring surrounds the punch, and both the punch and the pressure ring are detachably connected to the second mold base.

2. The drawing die according to claim 1, characterized in that, The second mold base is provided with a plurality of clearance holes, which are spaced apart; the second molding component also includes a plurality of ejector rods, which are arranged one-to-one with the plurality of clearance holes. The ejector rods are movably disposed in the clearance holes, and at least a portion of the ejector rods abut against the end of the pressure ring away from the first mold base.

3. The drawing die according to claim 2, characterized in that, The second mold base is provided with multiple connecting parts, and the second molding component also includes a limiting member. The limiting member includes a fixed part and a limiting part connected to each other. The fixed part is detachably connected to a portion of the connecting parts, and the fixed part is slidably inserted through the pressure ring. The limiting part is located on the side of the pressure ring away from the second mold base.

4. The drawing die according to claim 3, characterized in that, The connecting part includes a connecting threaded hole, and the fixing part includes a limiting stud, wherein the connecting threaded hole and the limiting stud are threadedly engaged.

5. The drawing die according to claim 1, characterized in that, The first mold base includes a stepped upper process surface and an upper mounting surface. In the direction toward the second mold base, the upper mounting surface protrudes from the upper process surface and is fitted with the die cavity. And / or, the second mold base includes a stepped lower process surface and a lower mounting surface. In the direction toward the first mold base, the lower mounting surface protrudes from the lower process surface and is fitted with the punch.

6. The drawing die according to any one of claims 1 to 5, characterized in that, The second mold base is provided with a receiving groove, and the punch is disposed in the receiving groove.

7. The drawing die according to claim 6, characterized in that, The two opposite side walls of the receiving groove are provided with openings.

8. The drawing die according to claim 7, characterized in that, The first mold base is provided with a first guide portion, and the pressure ring is provided with a first mating portion and a second mating portion. The first guide portion and the first mating portion are slidably mated, and the sliding direction of the first mating portion relative to the first guide portion is parallel to the arrangement direction of the first mold base and the second mold base. The second mating portion is slidably disposed in the opening, and the sliding direction of the second mating portion relative to the sidewall of the opening is parallel to the arrangement direction of the first mold base and the second mold base.

9. The drawing die according to claim 6, characterized in that, The number of receiving slots and the number of punches are both multiple, and the multiple receiving slots are arranged in a one-to-one correspondence with the multiple punches.

10. The drawing die according to claim 9, characterized in that, The first mold base is provided with a first guide portion, and the second mold base is provided with a second guide portion. The first guide portion and the second guide portion are slidably engaged, and the sliding direction of the second guide portion relative to the first guide portion is parallel to the arrangement direction of the first mold base and the second mold base.

11. The drawing die according to claim 6, characterized in that, The second molding assembly further includes a stop member, at least a portion of the inner wall of the receiving groove is slidably engaged with the pressure ring, one of the second mold base and the pressure ring is detachably connected to the stop member, and the other of the second mold base and the pressure ring is slidably engaged with the stop member.

12. The drawing die according to claim 6, characterized in that, The second mold base is provided with a plurality of support ribs, which are spaced apart. The support ribs are located at one end of the second mold base away from the first mold base. The punch has a first orthographic projection on the surface of the second mold base away from the first mold base. At least a portion of the support ribs have a second orthographic projection on the surface of the second mold base away from the first mold base. The second orthographic projection and the first orthographic projection have an overlapping portion.

13. The drawing die according to any one of claims 1 to 5, characterized in that, The punch includes a main die, a split die, and a mounting base. The main die is detachably connected to the second die base, the split die is connected to the mounting base, and the mounting base is detachably connected to the second die base.

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