Drawing die and drawing module
By designing a supplementary surface supporting process of pressing surfaces higher than the outer plate of the wheel cover in the drawing die, the problems of difficult forming of the outer plate of the wheel cover and low material utilization rate are solved, and more efficient material utilization and forming effects are achieved.
Patent Information
- Application Number
- CN202421986262.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-08-15
AI Technical Summary
The outer plate of the wheel cover is difficult to form, and the non-product surface on the wheel side is large and fat, resulting in low utilization of sheet material.
The pressing surface of the design drawing die includes a pressing surface higher than the outer plate of the wheel cover for supporting the process supplementary surface. Both have a preset height difference, reduce the pulling depth on the wheel side, and use anti-wrinkle ribs to prevent wrinkles from being wrinkled.
It improves the difficulty of forming the outer plate of the wheel cover, reduces the materials required for the process supplement surface, improves the material utilization rate, and avoids wrinkling problems of sheets.
Smart Images
Figure CN223250357U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of mold technology, and in particular to a drawing die and a drawing die assembly. Background Art
[0002] The wheel arch outer panels used in vehicles are usually made by drawing dies. When the wheel arch outer panels are limited by specific product features and the double-joining process cannot solve the formability problem, a single-joining double-groove process will be adopted, that is, a process of producing one drawn part from one sheet.
[0003] The drawn part includes the wheel cover outer plate and the process supplementary surface provided on the wheel side of the wheel cover outer plate. After the sheet metal is drawn into the drawn part using a drawing die, the waste material outside the boundary line of the wheel cover outer plate product is cut off to obtain the finished wheel cover outer plate.
[0004] In the related technology, the drawing die set includes a punch, a die, and a blank holder, etc. The wheel cover outer panel is difficult to form, and the process supplementary surface of the non-product surface on the wheel side is large and thick. A lot of material is required for forming, resulting in low material utilization of the sheet. Utility Model Content
[0005] The present application provides a drawing die and a drawing die assembly, which can improve the problems in related technologies such as the difficulty in forming the wheel cover outer panel, the large and thick process supplementary surface of the non-product surface on the wheel side, the large amount of material required for forming, and the low material utilization rate of the sheet material.
[0006] In a first aspect, an embodiment of the present application provides a drawing die for producing a drawn part, wherein the drawn part includes a wheel house outer panel and a process supplemental surface provided on the wheel side of the wheel house outer panel;
[0007] The drawing die includes a pressing surface, which is provided with an opening for accommodating a mold core. The pressing surface on one side of the opening is used to support the process supplementary surface, and the pressing surface on the other side of the opening is used to support the wheel arch outer panel, wherein the pressing surface for supporting the process supplementary surface is higher than the pressing surface for supporting the wheel arch outer panel and the two have a preset height difference.
[0008] The drawing die provided in the embodiment of the present application has an opening on the pressing surface for accommodating the die core, the pressing surface on one side of the opening is used to support the process supplementary surface, and the pressing surface on the other side of the opening is used to support the wheel cover outer panel. The pressing surface for supporting the process supplementary surface is higher than the pressing surface for supporting the wheel cover outer panel, and the two have a preset height difference. Therefore, in the process of placing the sheet material on the pressing surface to stamp out a drawn part, the higher pressing surface on one side of the opening can support the process supplementary surface, and the lower pressing surface on the other side of the opening can support the wheel cover outer panel, thereby reducing the drawing depth of the wheel side of the wheel cover outer panel and requiring less material to form the process supplementary surface, thereby improving the problem in the related art that the wheel cover outer panel is difficult to form, the process supplementary surface on the non-product surface of the wheel side is large and fat, and more material is required for forming, resulting in low material utilization of the sheet material.
[0009] In some embodiments, the preset height difference is one-half to two-thirds of the height of the wheel arch outer panel.
[0010] By adopting the above solution, the problem of sheet material wrinkling when the blank holder is closed can be avoided. At the same time, the drawing depth of the wheel side of the wheel cover outer panel can be reduced, so that less material is required for forming the process supplementary surface.
[0011] In some embodiments, the pressing surface used to support the process supplementary surface is the first part, and the first part and the mold core are used to jointly support the process supplementary surface; the pressing surface used to support the wheel cover outer panel is the second part, and the second part and the mold core are used to jointly support the wheel cover outer panel.
[0012] By adopting the above solution, the shape of the drawn part can be better adapted to facilitate drawing and forming.
[0013] In some embodiments, the pressing surface includes two third parts, which are respectively arranged on two opposite sides of the first part, and the arrangement direction of the two third parts is set at an angle to the direction from the first part to the second part, and the two third parts are respectively used to support the two ends of the process supplementary surface.
[0014] By adopting the above solution, the first part can better support the process supplementary surface, and the drawing depth of the wheel side of the wheel house outer panel can be reduced, so that less material is required for forming the process supplementary surface.
[0015] In some embodiments, a curved surface transition is adopted at the connection between the first portion and the third portion.
[0016] By adopting the above solution, the connection between the first part and the third part can be made to fit more closely with the sheet material, and the first part and the third part can be easily processed on the blank holder of the drawing die.
[0017] In some embodiments, the binder surface for supporting the addendum surface is in contact with the bottom of the addendum surface.
[0018] By adopting the above solution, the pressing surface can better support the process supplementary surface.
[0019] In some embodiments, anti-wrinkle ribs are provided on the pressing surface, and the anti-wrinkle ribs are located on the side of the process supplementary surface away from the wheel arch outer panel.
[0020] By adopting the above solution, the problem of sheet material wrinkling when the blank holder is closed can be avoided.
[0021] In some embodiments, a plurality of anti-wrinkle ribs are provided, and the plurality of anti-wrinkle ribs are spaced apart along the edge of the process addendum.
[0022] By adopting the above solution, the problem of sheet material wrinkling when the blank holder is closed can be better avoided.
[0023] In some embodiments, the drawn part includes a waste portion, the waste portion includes the process supplement surface and a waste edge, part of the waste edge is arranged on the edge of the wheel cover outer panel, part of the waste edge is arranged on the edge of the process supplement surface, and part of the pressing surface is used to support the waste edge.
[0024] By adopting the above solution, the drawn part can be more stable when the binder surface and the die core support the drawn part.
[0025] In a second aspect, an embodiment of the present application provides a drawing die set, comprising the drawing die as described in the first aspect.
[0026] The drawing module provided in the embodiment of the present application has the following beneficial effects: since the pressing surface is provided with an opening for accommodating the mold core, the pressing surface on one side of the opening is used to support the process supplementary surface, and the pressing surface on the other side of the opening is used to support the wheel cover outer panel, and the pressing surface used to support the process supplementary surface is higher than the pressing surface used to support the wheel cover outer panel, and the two have a preset height difference. Therefore, in the process of placing the sheet material on the pressing surface to stamp out a drawn part, the higher pressing surface on one side of the opening can support the process supplementary surface, and the lower pressing surface on the other side of the opening can support the wheel cover outer panel, thereby reducing the drawing depth of the wheel side of the wheel cover outer panel and requiring less material to form the process supplementary surface, thereby improving the problem in the related art that the wheel cover outer panel is difficult to form, the process supplementary surface on the non-product surface of the wheel side is large and fat, and more material is required for forming, resulting in low material utilization of the sheet material. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0028] Figure 1 This is a schematic structural diagram of a drawing die in a drawing die set in one embodiment of the present application;
[0029] Figure 2 This is a schematic structural diagram of a female die in a drawing die set in one embodiment of the present application;
[0030] Figure 3 yes Figure 1 Schematic diagram of the assembly structure of the blank holder of the drawing die, the die core and the drawn part;
[0031] Figure 4 yes Figure 3 Schematic diagram of the exploded structure of the binder surface, die core and drawn part shown;
[0032] Figure 5 yes Figure 3 A top view of the binder surface shown;
[0033] Figure 6 yes Figure 5 The cross-sectional view of the binder surface along the AA direction is shown;
[0034] Figure 7 is a schematic diagram of a wheel arch outer panel and a waste portion in one embodiment of the present application;
[0035] Figure 8 This is a schematic structural diagram of a wheel arch outer panel in one embodiment of the present application;
[0036] Figure 9 yes Figure 6 Schematic diagram of the binder surface and the mold core shown;
[0037] Figure 10 yes Figure 6 The binder surface and die core shown are Figure 4 The diagram of the matching of the drawn parts shown;
[0038] Figure 11 This is a schematic diagram of the layout of the sheet material in one of the embodiments of the present application;
[0039] Figure 12 It is a structural schematic diagram of the pressing surface in another embodiment of the present application.
[0040] The meanings of the marks in the figure are:
[0041] 100. Drawing die;
[0042] 10. Binder ring; 101. Binder surface; 11. First part; 12. Second part; 13. Opening; 14. Third part; 15. Anti-wrinkle rib; 16. Fourth part;
[0043] 20. Mold core;
[0044] 200, drawn parts;
[0045] 210, wheel house outer panel; 211, wheel side; 212, installation side; 220, process supplementary surface; 230, waste side;
[0046] 300, sheet material;
[0047] 400. Concave die. DETAILED DESCRIPTION
[0048] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0049] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.
[0050] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.
[0051] References to "one embodiment," "some embodiments," or "an embodiment" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present invention. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in 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, particular features, structures, or characteristics may be combined in any suitable manner.
[0052] In order to illustrate the technical solution of the present application, the following description is given with reference to specific drawings and embodiments.
[0053] In the related technology, the drawing module includes a punch, a die, and a pressure ring. The traditional pressure surface is generally designed to be relatively flat. Since the drawing depth of the wheel side of the wheel cover outer panel is large, it not only increases the difficulty of forming the wheel cover outer panel, resulting in cracking in the lower door sill area and the rear guard area, but also makes the process supplementary surface of the non-product surface on the wheel side large and fat, and the material required for forming is large, resulting in low material utilization of the sheet material.
[0054] In view of this, the present application provides a drawing die and a drawing die assembly. Since the pressing surface includes a first part and a second part, the first part and the second part are arranged in sequence from the wheel side to the installation side, and an opening for accommodating a mold core is provided between the first part and the second part, and the first part protrudes from the second part in the direction of the drawn part, so in the process of placing the sheet material on the pressing surface and punching it into a drawn part, the first part can support the process supplementary surface and the second part can support the wheel cover outer panel, thereby reducing the drawing depth of the wheel side of the wheel cover outer panel and requiring less material to form the process supplementary surface, thereby improving the problem in the related art that the wheel cover outer panel is difficult to form, and the process supplementary surface of the non-product surface on the wheel side is large and fat, requiring more material to form, resulting in low material utilization of the sheet material.
[0055] Please refer to Figures 1 to 8 , Figure 1 1 is a structural diagram of a drawing die 100 in a drawing die set in one embodiment of the present application. Figure 2 This is a schematic diagram of the structure of the female die 400 in the drawing die set in one embodiment of the present application. Figure 3 yes Figure 1 The drawing die 100 shown in FIG. 1 is a schematic diagram of the assembly structure of the blank holder 10 of the blank holder 10, the die core 20 and the drawn part 200. Figure 4 yes Figure 3 The exploded structural diagram of the binder surface 101, the mold core 20 and the drawn part 200 is shown in FIG. Figure 5 yes Figure 3 The top view of the binder surface 101 is shown, Figure 6 yes Figure 5 The cross-sectional view of the binder surface 101 along the AA direction is shown. Figure 7 is a schematic diagram of a wheel house outer panel 210 and a waste part in one embodiment of the present application. Figure 8 It is a schematic structural diagram of the wheel arch outer panel 210 in one of the embodiments of the present application.
[0056] In a first aspect, an embodiment of the present application provides a drawing die 100 for producing a drawn part 200 , wherein the drawn part 200 includes a wheel house outer panel 210 and a process supplementary surface 220 provided on the wheel side 211 of the wheel house outer panel 210 .
[0057] The drawing die 100 includes a binder surface 101 , which may be provided on a blank holder 10 of the drawing die 100 .
[0058] The pressing surface 101 is provided with an opening 13 for accommodating the mold core 20. The pressing surface 101 on one side of the opening 13 is used to support the process supplementary surface 220, and the pressing surface 101 on the other side of the opening 13 is used to support the wheel cover outer panel 210. The pressing surface 101 used to support the process supplementary surface 220 is higher than the pressing surface 101 used to support the wheel cover outer panel 210 and the two have a preset height difference.
[0059] For example, the binder surface 101 on one side of the opening 13 is used to support the process supplementary surface 220 in a vertically upward direction, and the binder surface 101 on the other side of the opening 13 is used to support the wheel house outer panel 210 in a vertically upward direction. Then, the binder surface 101 for supporting the process supplementary surface 220 protrudes vertically upward from the binder surface 101 for supporting the wheel house outer panel 210, and there is a preset height difference between the two. The numerical range of the preset height difference can be based on the fact that the sheet 300 does not wrinkle when the blank holder 10 is closed.
[0060] Please refer to Figure 11 , Figure 11 This is a schematic diagram of the layout of the sheet material 300 in one of the embodiments of the present application.
[0061] In this embodiment, the blank holder surface 101 is provided on the blank holder 10. During the use of the embodiment of the present application, the blank holder 10 is vertically raised 220 mm and is higher than the mold core 20. The sheet material 300 can be placed on the blank holder 10 first, and then the die 400 of the drawing module moves downward and contacts the blank holder 10. The sheet material 300 is clamped by the die 400 and the blank holder 10. Then the blank holder 10 and the die 400 continue to move downward together. Then, the sheet material 300 will complete the forming process on the mold core 20 under the clamping force of the blank holder 10 and the die 400. The sheet material 300 is drawn and stamped into a drawn part 200. Then, the waste material portion of the drawn part 200 is cut off to obtain the finished wheel cover outer panel 210. The finished wheel cover outer panel 210 can be roughly semicircular, with overall symmetry on the left and right sides, and slightly different in some parts.
[0062] It can be understood that the die 400 of the drawing die set includes a binder surface 101 , and the binder surface 101 on the die 400 is adapted to the binder surface 101 of the blank holder 10 .
[0063] From the above, it can be seen that the drawing die 100 provided in the embodiment of the present application has an opening 13 on the pressing surface 101 for accommodating the mold core 20, the pressing surface 101 on one side of the opening 13 is used to support the process supplementary surface 220, and the pressing surface 101 on the other side of the opening 13 is used to support the wheel cover outer panel 210, and the pressing surface 101 for supporting the process supplementary surface 220 is higher than the pressing surface 101 for supporting the wheel cover outer panel 210 and the two have a preset height difference, so in the process of placing the sheet 300 on the pressing surface 101 to be stamped into the drawn part 200 , the higher pressing surface 101 on one side of the opening 13 can support the process supplement surface 220, and the lower pressing surface 101 on the other side of the opening 13 can support the wheel cover outer panel 210, reducing the drawing depth of the wheel side 211 of the wheel cover outer panel 210, and can make the material required for the forming of the process supplement surface 220 less, thereby improving the problem in the related art that the forming of the wheel cover outer panel 210 is difficult, and the process supplement surface 220 on the non-product surface of the wheel side 211 is large and fat, and more material is required for forming, resulting in low material utilization of the sheet 300.
[0064] Optionally, the wheel housing outer panel 210 further includes a mounting side 212 opposite to the wheel side 211. The scrap portion of the wheel housing outer panel 210 includes a process addendum surface 220 and a scrap edge 230. The mounting side 212 is used to connect with other parts, such as welding together.
[0065] Please refer to Figure 9 and Figure 10 , Figure 9 yes Figure 6 The schematic diagram of the binder surface 101 and the mold core 20 shown, Figure 10 yes Figure 6 The binder surface 101 and the mold core 20 shown are Figure 4 A schematic diagram of the cooperation of the drawn part 200 is shown.
[0066] In some embodiments, the preset height difference H1 is one-half to two-thirds of the height H of the wheel house outer panel 210 .
[0067] By adopting the above solution, the problem of wrinkling of the sheet 300 when the blank holder 10 is closed can be avoided. At the same time, the drawing depth of the wheel side 211 of the wheel cover outer panel 210 can be reduced, so that less material is required to form the process supplementary surface 220.
[0068] Optionally, the pressing surface 101 used to support the process supplementary surface 220 is the first part 11, and the first part 11 and the mold core 20 are used to jointly support the process supplementary surface 220; the pressing surface 101 used to support the wheel cover outer panel 210 is the second part 12, and the second part 12 and the mold core 20 are used to jointly support the wheel cover outer panel 210.
[0069] Such an arrangement can better adapt to the shape of the drawn part 200 and facilitate drawing and forming.
[0070] It should be noted that the first portion 11 and the second portion 12 are respectively arranged on opposite sides of the opening 13. The first portion 11 and the second portion 12 can be different parts of the same surface, that is, the binder surface 101 is a complete, integrally formed surface, and the corresponding blank holder 10 is integrally formed. Alternatively, the first portion 11 and the second portion 12 can also be two separate surfaces, that is, the binder surface 101 is formed by splicing two surfaces, and the corresponding blank holder 10 is provided separately.
[0071] It can be understood that the first portion 11 is higher than the second portion 12 and there is a preset height difference between the first portion 11 and the second portion 12 .
[0072] Optionally, the pressing surface 101 includes two third parts 14, which are respectively arranged on two opposite sides of the first part 11, and the arrangement direction of the two third parts 14 is set at an angle to the direction from the first part 11 to the second part 12. The two third parts 14 are respectively used to support the two ends of the process supplementary surface 220.
[0073] By adopting the above solution, the first part 11 can better support the process supplementary surface 220, and the drawing depth of the wheel side 211 of the wheel house outer panel 210 can be reduced, so that less material is required to form the process supplementary surface 220.
[0074] Please refer to Figure 3 、 Figure 4 and Figure 5 In some embodiments, a curved surface transition is used at the connection between the first portion 11 and the third portion 14 .
[0075] By adopting the above solution, the connection between the first part 11 and the third part 14 can be more closely fitted to the sheet material 300 , and the first part 11 and the third part 14 can be easily processed on the blank holder 10 of the drawing die 100 .
[0076] Optionally, the connection between the first portion 11 and the third portion 14 may be formed by a circular arc surface or an irregular curved surface transition.
[0077] It should be noted that the binder surface 101 can be composed of a first portion 11, a second portion 12, a third portion 14, and a fourth portion 16, as well as transition portions therebetween. The first portion 11 can be used to support the bottom end of the process supplementary surface 220. The process supplementary surface 220 is designed between the first portion 11 and the wheel house outer panel 210. The mold core 20 is used to adapt to the process supplementary surface 220 and the wheel house outer panel 210. The mold core 20 and the binder surface 101 together constitute a complete drawing die surface.
[0078] It should be noted that the first portion 11 , the second portion 12 , the third portion 14 and the fourth portion 16 and the transition portions therebetween can all be flat or curved surfaces, specifically adapted to the bottom of the drawn part 200 .
[0079] The first part 11, the second part 12, the third part 14 and the fourth part 16 and the transition parts therebetween can be different parts of a surface, that is, the binder surface 101 is a complete, integrally formed surface, and the corresponding blank holder 10 is integrally formed. Alternatively, the first part 11, the second part 12, the third part 14 and the fourth part 16 and the transition parts therebetween can also be five separate surfaces, that is, the binder surface 101 is made up of five surfaces spliced together, and the corresponding blank holder 10 is set separately. Alternatively, at least one, two, three or four of the first part 11, the second part 12, the third part 14 and the fourth part 16 and the transition parts therebetween are different parts of the same surface, and the rest are separate surfaces, and the corresponding blank holder 10 is set separately.
[0080] It can be understood that the parts outside the product edge of the wheel arch outer panel 210 can be the waste parts of the drawn part 200. The waste parts include the process supplement surface 220 and the waste edge 230. Part of the waste edge 230 is set at the edge of the wheel arch outer panel 210, and part of the waste edge 230 is set at the edge of the process supplement surface 220. Part of the pressing surface 101 is used to support the waste edge 230.
[0081] Such an arrangement can make the drawn part 200 more stable when the binder surface 101 and the mold core 20 support the drawn part 200 .
[0082] Please refer to Figures 3 to 8 In some embodiments, the binder surface 101 for supporting the addendum surface 220 is in contact with the bottom of the addendum surface 220 .
[0083] By adopting the above solution, the binder surface 101 can better support the process supplementary surface 220 .
[0084] It is understandable that the first portion 11 is in contact with the bottom of the addendum surface 220 .
[0085] Please refer to Figure 12 , Figure 12 It is a structural schematic diagram of the binder surface 101 in another embodiment of the present application.
[0086] In another embodiment, anti-wrinkle ribs 15 are provided on the pressing surface 101 , and the anti-wrinkle ribs 15 are located on the side of the process supplementary surface 220 away from the wheel arch outer panel 210 .
[0087] By adopting the above solution, the problem of wrinkling of the sheet material 300 when the blank holder 10 is closed can be avoided.
[0088] It is understandable that the first portion 111 is provided with an anti-wrinkle rib 15 .
[0089] For example, the anti-wrinkle ribs 15 may be water drop ribs or the like.
[0090] Optionally, a plurality of anti-wrinkle ribs 15 are provided, and the plurality of anti-wrinkle ribs 15 are spaced apart along the edge of the addendum surface 220 .
[0091] Such an arrangement can better avoid the problem of wrinkling of the sheet material 300 when the blank holder 10 is closed.
[0092] Please refer to Figures 1 to 11 The binder surface 101 of the drawing die 100 provided above can be designed by the following steps:
[0093] First, determine that the wheel arch outer panel 210 adopts a single-piece double-slot design.
[0094] Secondly, the flange surface of the wheel arch outer panel 210 is used as the pressing surface 101, and a flat pressing surface 101 is designed first.
[0095] Again, the pressing surface 101 on the wheel side 211 is lifted into an arch shape, so that the pressing surface 101 includes a first part 11 and a second part 12, and the height difference H between the first part 11 and the second part 12 is one half to two thirds of the height H of the wheel cover outer panel 210. The pressing surface 101 may include a first part 11, a second part 12, a third part 14 and a fourth part 16 and a transition part therebetween, and the fourth part 16 serves as an extension surface of the product surface of the wheel cover outer panel 210.
[0096] Then, based on the stepped first and second portions 11, 12, and wheelhouse outer panel 210, a process addendum surface 220 is designed between the wheelhouse outer panel 210 and the stepped first and second portions 11, 12. Based on the boundary of the process addendum surface 220, anti-wrinkle ribs 15 are designed on the binder surface 101. Simulation analysis confirms that the final height difference H1 between the first and second portions 11, 12 is determined to be optimal, ensuring that the blank holder 10 closes without wrinkling. If wrinkling occurs, the height difference H1 between the first and second portions 11, 12 is reduced until the blank holder 10 closes without wrinkling, thereby obtaining the drawing die surface.
[0097] Next, design the special-shaped sheet materials 300 and arrange them side by side as shown in the following example: Figure 11 shown.
[0098] Finally, based on the designed sheet 300 and drawing die surface, the simulation analysis confirmation and stamping process design are completed.
[0099] In summary, the above steps can effectively solve the formability problem of characteristic cracking in the rear protection area of the wheel arch outer panel 210, and at the same time effectively improve the material utilization rate of the wheel arch outer panel 210.
[0100] In a second aspect, an embodiment of the present application provides a drawing die set, comprising the drawing die 100 of the first aspect.
[0101] In the drawing module provided by the embodiment of the present application, the pressing surface 101 is provided with an opening 13 for accommodating the die core 20, the pressing surface 101 on one side of the opening 13 is used to support the process supplementary surface 220, and the pressing surface 101 on the other side of the opening 13 is used to support the wheel cover outer plate 210, and the pressing surface 101 for supporting the process supplementary surface 220 is higher than the pressing surface 101 for supporting the wheel cover outer plate 210 and the two have a preset height difference, so in the process of placing the sheet 300 on the pressing surface 101 to stamp into the drawn part 200, it can be made The higher pressing surface 101 on one side of the opening 13 supports the process supplement surface 220, and the lower pressing surface 101 on the other side of the opening 13 supports the wheel cover outer panel 210, which reduces the drawing depth of the wheel side 211 of the wheel cover outer panel 210 and requires less material to form the process supplement surface 220, thereby improving the problem in the related art that the wheel cover outer panel 210 is difficult to form, and the process supplement surface 220 on the non-product side of the wheel side 211 is large and fat, and more material is required for forming, resulting in low material utilization of the sheet 300.
[0102] It is understandable that the drawing die set provided in the present application may also include components such as a die 400, positioning pins and a hydraulic cylinder, which will not be described in detail here.
[0103] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.
Claims
1. A drawing die, characterized in that: The drawing die is used to produce a drawn part, and the drawn part includes a wheel house outer panel and a process supplementary surface provided on the wheel side of the wheel house outer panel; The drawing die includes a pressing surface, which is provided with an opening for accommodating a mold core. The pressing surface on one side of the opening is used to support the process supplementary surface, and the pressing surface on the other side of the opening is used to support the wheel arch outer panel, wherein the pressing surface for supporting the process supplementary surface is higher than the pressing surface for supporting the wheel arch outer panel and the two have a preset height difference.
2. The drawing die according to claim 1, characterized in that: The preset height difference is one half to two thirds of the height of the wheel arch outer panel.
3. The drawing die according to claim 1, characterized in that: The pressing surface used to support the process supplement surface is the first part, and the first part and the mold core are used to jointly support the process supplement surface; the pressing surface used to support the wheel cover outer panel is the second part, and the second part and the mold core are used to jointly support the wheel cover outer panel.
4. The drawing die according to claim 3, characterized in that: The pressing surface includes two third parts, which are respectively arranged on two opposite sides of the first part. The arrangement direction of the two third parts is set at an angle to the direction from the first part to the second part, and the two third parts are respectively used to support the two ends of the process supplementary surface.
5. The drawing die according to claim 4, characterized in that: A curved surface transition is adopted at the connection between the first portion and the third portion.
6. The drawing die according to claim 1, characterized in that: The binder surface for supporting the process supplemental surface is in contact with the bottom of the process supplemental surface.
7. The drawing die according to any one of claims 1 to 6, characterized in that: Anti-wrinkle ribs are provided on the pressing surface, and the anti-wrinkle ribs are located on the side of the process supplementary surface away from the wheel arch outer panel.
8. The drawing die according to claim 7, characterized in that: A plurality of the anti-wrinkle ribs are provided, and the plurality of the anti-wrinkle ribs are spaced apart along the edge of the process supplementary surface.
9. The drawing die according to any one of claims 1 to 6, characterized in that: The drawn part includes a waste portion, which includes the process supplement surface and a waste edge. Part of the waste edge is arranged at the edge of the wheel cover outer panel, part of the waste edge is arranged at the edge of the process supplement surface, and part of the pressing surface is used to support the waste edge.
10. A drawing die set, characterized in that: Comprising the drawing die according to any one of claims 1 to 9.