CN209792394U - Blanking and shaping die for automobile A-pillar sheet metal part - Google Patents
Blanking and shaping die for automobile A-pillar sheet metal part Download PDFInfo
- Publication number
- CN209792394U CN209792394U CN201821935033.5U CN201821935033U CN209792394U CN 209792394 U CN209792394 U CN 209792394U CN 201821935033 U CN201821935033 U CN 201821935033U CN 209792394 U CN209792394 U CN 209792394U
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Abstract
The utility model discloses a blanking shaping die for automobile A-pillar sheet metal parts, which comprises two groups of modules which are respectively used for blanking and shaping the left and right sheet metal parts of an automobile A-pillar, wherein each group of modules respectively comprises a blanking unit, a forming unit and a punching unit; a blanking upper die (23) of the blanking unit is connected with the upper die assembly, and a blanking lower die (24) is connected with the lower die assembly (7); the forming blocks (10) of the forming unit are respectively positioned at the left side and the right side of the blanking unit, and the upper end of the forming unit is connected with the upper die assembly and is connected on the lower die assembly (7) in a sliding manner in the horizontal direction through a driving device; the punching unit is vertically connected to the upper die assembly, and a punch (26) of the punching unit penetrates through the blanking upper die (23) to act on the sheet metal part. After the structure is adopted, a plurality of working procedures can be realized by opening and closing the die once, the production efficiency is greatly improved, and a plurality of pairs of dies are reduced; meanwhile, the utilization rate of the material is high, the waste is reduced, and the production cost is saved.
Description
Technical Field
the utility model relates to a technical field of mould specifically says a blanking plastic mould of car A post sheet metal component.
Background
The common car body has three types of columns, namely a front column (A column), a middle column (B column) and a rear column (C column) from front to back, and for a car, the columns play a role of a door frame besides a supporting role. The A column is a connecting column for connecting the roof and the front cabin on the left front side and the right front side, is positioned between the engine cabin and the cockpit, and is positioned above the left rearview mirror and the right rearview mirror. The A post is the main girder steel that supports and stabilize body structure, and especially the cockpit, whether wide durable of A post is direct relation to the frontal collision and is out of shape to the cockpit, but in order to reach durable reliable purpose and design into too wide width with the A post, the blind area is too big when nevertheless can leading to turning round, is unfavorable for the driver to drive, has the potential safety hazard. Therefore, the A-pillar must ensure rigidity and strength, and the size of the A-pillar must not be too wide, which is very important for the A-pillar manufacturer to use the mold in its production. In the prior art, the design structure of the A column is generally an integral side wall structure, and the structure is divided into two structures, namely an outer decorative plate type structure, namely an outer decorative plate is added on a side wall outer plate, and the outer decorative plate is connected with the side wall outer plate through a buckle, but the structure has very high requirements on appearance and precision in the production process, so that the manufacturing cost is greatly increased; the other type is an integrated A-column structure designed into a whole by utilizing the side wall outer plate, and the structure has the characteristics of good surface quality and high dimensional precision, but due to the special structure of the A-column part, a side shaping mechanism needs to be designed on a die, so that the stamping die is very complex, the operation is very complicated, the processes are numerous, and the production cost is very high.
As shown in fig. 1, most of the sheet metal parts of the automobile a-pillar are used in pairs, that is, a left sheet metal part of the automobile a-pillar and a right sheet metal part of the automobile a-pillar have radians in the length direction, and the side wall plate also has a folded edge, and in addition, the top surface also has a mounting hole, so that the sheet metal parts have complex shape and structure, and usually need to be subjected to processes of drawing, side shaping, trimming, side trimming, punching, side flanging and the like. Therefore, the processes for producing the left and right sheet metal parts of the automobile A column are multiple, and each process needs one die, so that the production cost is high, and the production efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a blanking plastic mould of car A post sheet metal component that the process is simple, can greatly reduced mould cost, reduce the material waste simultaneously is provided.
In order to solve the technical problem, the blanking and shaping die for the automobile A-pillar sheet metal part comprises an upper die assembly and a lower die assembly, and comprises a module for blanking and shaping the automobile A-pillar left sheet metal part and a module for blanking and shaping the automobile A-pillar right sheet metal part respectively, wherein the two modules are connected to the left end and the right end between the upper die assembly and the lower die assembly respectively; each group of modules respectively comprises a blanking unit, a forming unit and a punching unit; an upper blanking die of the blanking unit is connected with the upper die assembly, and a lower blanking die is connected with the lower die assembly; the upper end of the forming unit is connected with the upper die assembly and is connected on the lower die assembly in a sliding manner in the horizontal direction through a driving device; the punching unit is vertically connected to the upper die assembly, and a punch of the punching unit penetrates through the blanking upper die to act on the sheet metal part.
the upper die assembly comprises an upper die base plate and an upper die fixing plate, the upper die fixing plate is fixedly connected below the upper die base plate, and the automobile A-column left sheet metal part blanking and shaping module and the automobile A-column right sheet metal part blanking and shaping module are connected to the upper die fixing plate and are located in the left area and the right area of the upper die fixing plate; the upper die fixing plate is of a frame type structure and comprises a horizontal plate and a plurality of vertically and horizontally staggered vertical plates vertically connected to the horizontal plate; one side of the horizontal plate facing the lower die assembly is provided with a mounting groove, and a blanking upper die of the blanking unit is connected in the mounting groove; the upper surface of the horizontal plate is provided with a mounting column for accommodating a punching driving cylinder of the punching unit, and the end part of the punching driving cylinder is connected with the end part of the mounting column; the horizontal plate is provided with long waist holes at two sides of the mounting groove, and the upper end of the forming unit is connected in the long waist holes in a sliding manner.
The blanking lower mould is a plurality of and arranges in proper order along the length direction of sheet metal component and connects on lower mould subassembly, and the upper surface of a plurality of blanking lower moulds forms the profile surface of sheet metal component lower surface.
The forming unit also comprises a forming fixing plate, a forming connecting block and a forming block connecting seat; the forming blocks are respectively positioned on the left side and the right side of the sheet metal part and are sequentially arranged and connected to the forming block connecting seat along the length direction of the sheet metal part, and the plurality of forming blocks form a contour surface of the side edge of the upper surface of the sheet metal part facing the surface of the sheet metal part; the front end and the rear end of the forming block connecting seat are connected with the lower die assembly in a sliding mode in the horizontal direction; the lower end of the forming connecting block is connected with the upper end face of the forming block connecting seat, and the upper end of the forming connecting block is positioned in the long waist hole of the upper cabinet fixing plate; the shaping fixed plate is located the horizontal plate of last fixed plate, and the top of shaping connecting block is connected with the lower surface of shaping fixed plate, and the shaping fixed plate lower surface outside this connection contact surface is located last fixed plate horizontal plate plane, and the shaping fixed plate is along with the horizontal migration of shaping connecting block and sliding connection is on last fixed plate's horizontal plate.
The driving device comprises a forming driving cylinder, a limiting block and a cylinder body fixing block; the cylinder body fixing block is a T-shaped plate arranged in the vertical direction, the large head end of the cylinder body fixing block is connected with the upper die fixing plate, the small head end of the cylinder body fixing block is provided with a through hole in the horizontal direction, and the cylinder body of the forming driving cylinder is tightly matched in the through hole; a downward limiting plate is arranged on the upper die fixing plate, the limiting block is positioned between the limiting plate and the cylinder body of the forming driving cylinder, and the limiting block is fixedly connected to one end of the cylinder body of the forming driving cylinder; the piston rod of the forming driving cylinder is connected with one side, far away from the forming block, of the forming block connecting seat.
The periphery of the through hole is provided with an opening at the small end of the cylinder body fixing block, and the opening extends from the through hole to the edge.
The connecting part of the forming block connecting seat and the lower die assembly in sliding connection comprises an upper sliding plate and a lower sliding plate, wherein the upper sliding plate is fixedly connected to the side walls of the front end and the rear end of the forming block connecting seat, the lower sliding plate is connected to the lower die assembly, and the upper sliding plate is in sliding connection with the lower sliding plate in the horizontal direction.
A guide device is arranged between the forming block connecting seat and the lower die assembly, the guide device comprises a movable guide plate and a static guide plate which are matched with each other to slide, the static guide plate is obliquely arranged on the lower die assembly, and the movable guide plate is connected to one side, away from the forming block, of the forming block connecting seat; the matching guide surface of the static guide plate is a V-shaped surface protruding outwards, and the matching guide surface of the corresponding dynamic guide plate is a V-shaped surface inwards concave.
After the structure more than adopting, compared with the prior art, the utility model, have following advantage:
1) Because a plurality of procedures in the prior art are integrated into one pair of dies, and a plurality of procedures such as blanking, forming, punching and the like are realized at one time through the structure in the dies, a plurality of procedures can be realized by opening and closing the dies at one time, the production efficiency is greatly improved, a plurality of pairs of dies are reduced, and the production cost is correspondingly greatly reduced; meanwhile, the blanking process is realized by the die, the die is directly cut from the plate, and only the forming allowance is reserved, so that the utilization rate of the material is high, the waste is reduced, and the production cost is further saved;
2) The upper die fixing plate integrates three die units of blanking, forming and punching on one plate, assembly errors do not exist among the die units, and the precision of a processed finished product is higher according to the action sequence in the die;
3) Two left and right sheet metal parts of the automobile A column can be produced by one pair of dies at one time, and the two modules are connected between the upper die assembly and the lower die assembly at the same time, so that the produced two left and right sheet metal parts of the automobile A column have higher corresponding degree;
4) The forming unit forms the side edge and the flanging of the sheet metal part at one time, so that the production efficiency is greatly improved;
5) In addition, the setting of opening on the cylinder body fixed block makes the heat that the shaping driving cylinder produced when using can obtain remedying through the opening to receive the restriction of cylinder body fixed block and produce the blow out when avoiding the overheated inflation of shaping driving cylinder, avoid the emergence of incident.
drawings
Fig. 1 is the utility model discloses well car A post sheet metal component's structural schematic.
Fig. 2 is the utility model discloses car A post sheet metal component's blanking plastic mould's schematic structure.
Fig. 3 is a schematic diagram of a part of the structure of the present invention.
Fig. 4 is a schematic structural diagram of three module units of the blanking, forming and punching apparatus of the present invention.
Fig. 5 is a schematic structural view of the middle upper mold fixing plate of the present invention.
Fig. 6 is a schematic structural view of the middle upper mold fixing plate of the present invention.
Fig. 7 is a schematic structural diagram of three module units of the blanking, forming and punching apparatus of the present invention.
Fig. 8 is a schematic structural view of the middle cylinder fixing block of the present invention.
Wherein: 1-1, a left sheet metal part of an automobile A column; 1-2, a right sheet metal part of an automobile A column; 2. a blanking unit; 3. a molding unit; 4. a punching unit; 5. an upper die base plate; 6. an upper die fixing plate; 7. a lower die assembly; 8. a long waist hole; 9. mounting a column; 10. forming a block; 11. a forming block connecting seat; 12. a limiting block; 13. a cylinder body fixing block; 14. forming a driving cylinder; 15. forming a connecting block; 16. forming a fixed plate; 17. a movable guide plate; 18. a static guide plate; 19. an upper sliding plate; 20. a lower sliding plate; 21. a through hole; 22. an opening; 23. blanking and upper die; 24. blanking lower die; 25. a punching driving cylinder; 26. a punch; 27. a limiting plate; 28. and (4) mounting the groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
By figure 1 ~ 8 show the utility model discloses car A post sheet metal component's blanking plastic mould's schematic structure can know, it includes upper die component and lower die component 7, and this mould is including the module that is used for car A post left side sheet metal component 1-1 blanking plastic respectively and the module that is used for car A post right side sheet metal component 1-2 blanking plastic, and two sets of modules are connected respectively in the mould about both ends between upper die component and lower die component 7. Each group of modules respectively comprises a blanking unit, a forming unit and a punching unit. The blanking upper die 23 of the blanking unit is connected with the upper die assembly, and the blanking lower die 24 is connected with the lower die assembly 7. The forming blocks 10 of the forming unit are respectively positioned at the left side and the right side of the blanking unit, and the upper end of the forming unit is connected with the upper die assembly and is connected to the lower die assembly 7 in a sliding manner in the horizontal direction through a driving device. The punching unit is vertically connected to the upper die assembly, and a punch 26 of the punching unit penetrates through the blanking upper die 23 to act on the sheet metal part.
The upper die assembly comprises an upper die base plate 5 and an upper die fixing plate 6, the upper die fixing plate 6 is fixedly connected below the upper die base plate 5, and a module for blanking and shaping the left sheet metal part 1-1 of the automobile A column and a module for blanking and shaping the right sheet metal part 1-2 of the automobile A column are connected to the upper die fixing plate 6 together and are located in the left area and the right area of the upper die fixing plate 6. The upper die fixing plate 6 is of a frame type structure and comprises a horizontal plate and a plurality of vertically and horizontally staggered vertical plates vertically connected to the horizontal plate. The one side of horizontal plate face lower mould subassembly 7 has mounting groove 7, and mould 23 is connected in mounting groove 28 on blanking of blanking unit. The horizontal plate is provided with a mounting column 9 for accommodating a punching driving cylinder 25 of the punching unit, and the end part of the punching driving cylinder 25 is connected with the end part of the mounting column 9. The horizontal plate is provided with long waist holes 8 at both sides of the mounting groove 28, and the upper end of the forming unit is slidably connected in the long waist holes 8.
Blanking lower mould 24 is a plurality of and arranges in proper order along the length direction of sheet metal component and connect on lower module 7, and the profile surface of sheet metal component lower surface is formed to the upper surface of a plurality of blanking lower moulds 24.
The molding unit further comprises a molding fixing plate 16, a molding connecting block 15 and a molding block connecting seat 11. The shaping piece 10 is a plurality of, is located the left and right sides of sheet metal component respectively to length direction along the sheet metal component arranges in proper order and connects on shaping piece connecting seat 11, and a plurality of shaping pieces 10 form the profile surface of sheet metal component upper surface side towards the surface of sheet metal component. The front end and the rear end of the forming block connecting seat 11 are connected with the lower die component 7 in a sliding mode in the horizontal direction. The lower end of the forming connecting block 15 is connected with the upper end face of the forming block connecting seat 11, and the upper end of the forming connecting block 15 is located in the long waist hole 8 of the upper cabinet fixing plate. The forming fixing plate 16 is located on the horizontal plate of the upper die fixing plate 6, the top end of the forming connecting block 15 is connected with the lower surface of the forming fixing plate 16, except the connecting contact surface, is located on the horizontal plate plane of the upper die fixing plate 6, and the forming fixing plate 16 is connected to the horizontal plate of the upper die fixing plate 6 in a sliding mode along with the horizontal movement of the forming connecting block 15.
The driving device comprises a forming driving cylinder 14, a limiting block 12 and a cylinder body fixing block 13. The cylinder body fixed block 13 is a T-shaped plate arranged in the vertical direction, the large end of the cylinder body fixed block is connected with the upper die fixed plate 6, the small end of the cylinder body fixed block is provided with a through hole 21 in the horizontal direction, and the cylinder body of the forming driving cylinder 14 is tightly matched in the through hole 21. The upper die fixing plate 6 is provided with a downward limit plate 27, the limit block 12 is positioned between the limit plate 27 and the cylinder body of the forming driving cylinder 14, and the limit block 12 is fixedly connected to one end of the cylinder body of the forming driving cylinder 14. The piston rod of the forming driving cylinder 14 is connected with one side of the forming block connecting seat 11 far away from the forming block 10.
An opening 22 is arranged on the periphery of a through hole 21 on the small head end of the cylinder body fixing block 13, and the opening 22 extends from the through hole 21 to the edge.
The connecting part of the forming block connecting seat 11 and the lower die assembly 7 in sliding connection comprises an upper sliding plate 19 and a lower sliding plate 20, wherein the upper sliding plate 19 is fixedly connected to the side walls of the front end and the rear end of the forming block connecting seat 11, the lower sliding plate 20 is connected to the lower die assembly 7, and the upper sliding plate 19 is in sliding connection with the lower sliding plate 20 in the horizontal direction.
And a guide device is arranged between the forming block connecting seat 11 and the lower die assembly 7, the guide device comprises a movable guide plate 17 and a static guide plate 18 which are matched with each other and slide, wherein the static guide plate 18 is obliquely arranged on the lower die assembly 7, and the movable guide plate 17 is connected to one side of the forming block connecting seat 11, which is far away from the forming block 10. The matching guide surface of the static guide plate 18 is a V-shaped surface protruding outwards, and the matching guide surface of the corresponding dynamic guide plate 17 is a V-shaped surface inwards concave.
The above description is only a preferred and feasible embodiment of the present invention, and therefore, the scope of the present invention should not be limited by the above description, and various other modifications made by the technical solutions and concepts of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a blanking plastic mould of car A post sheet metal component, includes mould assembly and lower mould assembly (7), its characterized in that: the die comprises a die set for blanking and shaping a left sheet metal part (1-1) of an automobile A column and a die set for blanking and shaping a right sheet metal part (1-2) of the automobile A column, wherein the two die sets are respectively connected to the left end and the right end between an upper die assembly and a lower die assembly (7) of the die; each group of modules respectively comprises a blanking unit, a forming unit and a punching unit; an upper blanking die (23) of the blanking unit is connected with the upper die assembly, and a lower blanking die (24) of the blanking unit is connected with the lower die assembly (7); the forming blocks (10) of the forming unit are respectively positioned at the left side and the right side of the blanking unit, and the upper end of the forming unit is connected with the upper die assembly and is connected on the lower die assembly (7) in a sliding manner in the horizontal direction through a driving device; the punching unit is vertically connected to the upper die assembly, and a punch (26) of the punching unit penetrates through the blanking upper die (23) to act on the sheet metal part.
2. The blanking shaping die of the automobile A-pillar sheet metal part according to claim 1, characterized in that: the upper die assembly comprises an upper die base plate (5) and an upper die fixing plate (6), the upper die fixing plate (6) is fixedly connected below the upper die base plate (5), and a die set for blanking and shaping a left sheet metal part (1-1) of an automobile A column and a die set for blanking and shaping a right sheet metal part (1-2) of the automobile A column are connected to the upper die fixing plate (6) and are located in the left area and the right area of the upper die fixing plate (6); the upper die fixing plate (6) is of a frame type structure and comprises a horizontal plate and a plurality of vertically and horizontally staggered vertical plates which are vertically connected to the horizontal plate; one surface of the horizontal plate facing the lower die assembly (7) is provided with a mounting groove (28), and a blanking upper die (23) of the blanking unit is connected in the mounting groove (28); the upper surface of the horizontal plate is provided with a mounting column (9) for accommodating a punching driving cylinder (25) of the punching unit, and the end part of the punching driving cylinder (25) is connected with the end part of the mounting column (9); the horizontal plate is provided with long waist holes (8) at two sides of the mounting groove (28), and the upper end of the forming unit is connected in the long waist holes (8) in a sliding manner.
3. The blanking shaping die of the automobile A-pillar sheet metal part as set forth in claim 2, characterized in that: blanking lower mould (24) are a plurality of and arrange in proper order along the length direction of sheet metal component and connect under on mould subassembly (7), and the upper surface of a plurality of blanking lower moulds (24) forms the profile surface of sheet metal component lower surface.
4. The blanking shaping die of the automobile A-pillar sheet metal part as set forth in claim 2, characterized in that: the forming unit also comprises a forming fixing plate (16), a forming connecting block (15) and a forming block connecting seat (11); the forming blocks (10) are respectively positioned at the left side and the right side of the sheet metal part and are sequentially arranged and connected to the forming block connecting seats (11) along the length direction of the sheet metal part, and the surfaces of the forming blocks (10) facing the sheet metal part form profile surfaces of the side edges of the upper surface of the sheet metal part; the front end and the rear end of the forming block connecting seat (11) are in sliding connection with the lower die assembly (7) in the horizontal direction; the lower end of the forming connecting block (15) is connected with the upper end face of the forming block connecting seat (11), and the upper end of the forming connecting block (15) is positioned in the long waist hole (8) of the upper cabinet fixing plate; the forming fixing plate (16) is located on the horizontal plate of the upper die fixing plate (6), the top end of the forming connecting block (15) is connected with the lower surface of the forming fixing plate (16), the lower surface of the forming fixing plate (16) outside the connecting contact surface is located on the horizontal plate plane of the upper die fixing plate (6), and the forming fixing plate (16) is connected to the horizontal plate of the upper die fixing plate (6) in a sliding mode along with the horizontal movement of the forming connecting block (15).
5. The blanking shaping die of the automobile A-pillar sheet metal part as set forth in claim 4, characterized in that: the driving device comprises a forming driving cylinder (14), a limiting block (12) and a cylinder body fixing block (13); the cylinder body fixing block (13) is a T-shaped plate arranged in the vertical direction, the large end of the cylinder body fixing block is connected with the upper die fixing plate (6), the small end of the cylinder body fixing block is provided with a through hole (21) in the horizontal direction, and the cylinder body of the forming driving cylinder (14) is tightly matched in the through hole (21); a downward limiting plate (27) is arranged on the upper die fixing plate (6), the limiting block (12) is positioned between the limiting plate (27) and the cylinder body of the forming driving cylinder (14), and the limiting block (12) is fixedly connected to one end of the cylinder body of the forming driving cylinder (14); a piston rod of the forming driving cylinder (14) is connected with one side of the forming block connecting seat (11) far away from the forming block (10).
6. The blanking shaping die of the automobile A-pillar sheet metal part as set forth in claim 5, characterized in that: the periphery of the through hole (21) on the small end of the cylinder body fixing block (13) is provided with an opening (22), and the opening (22) extends from the through hole (21) to the edge.
7. the blanking shaping die of the automobile A-pillar sheet metal part as set forth in claim 4, characterized in that: the connecting part of the forming block connecting seat (11) and the lower die assembly (7) in sliding connection comprises an upper sliding plate (19) and a lower sliding plate (20), wherein the upper sliding plate (19) is fixedly connected to the side walls of the front end and the rear end of the forming block connecting seat (11), the lower sliding plate (20) is connected to the lower die assembly (7), and the upper sliding plate (19) is in sliding connection with the lower sliding plate (20) in the horizontal direction.
8. The blanking shaping die of the automobile A-pillar sheet metal part as set forth in claim 4, characterized in that: a guide device is arranged between the forming block connecting seat (11) and the lower die assembly (7), the guide device comprises a movable guide plate (17) and a static guide plate (18) which are matched with each other and slide, wherein the static guide plate (18) is obliquely arranged on the lower die assembly (7), and the movable guide plate (17) is connected to one side, away from the forming block (10), of the forming block connecting seat (11); the matching guide surface of the static guide plate (18) is a V-shaped surface protruding outwards, and the matching guide surface of the corresponding dynamic guide plate (17) is a V-shaped surface inwards concave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821935033.5U CN209792394U (en) | 2018-11-22 | 2018-11-22 | Blanking and shaping die for automobile A-pillar sheet metal part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821935033.5U CN209792394U (en) | 2018-11-22 | 2018-11-22 | Blanking and shaping die for automobile A-pillar sheet metal part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209792394U true CN209792394U (en) | 2019-12-17 |
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ID=68816695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821935033.5U Expired - Fee Related CN209792394U (en) | 2018-11-22 | 2018-11-22 | Blanking and shaping die for automobile A-pillar sheet metal part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209792394U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111203478A (en) * | 2018-11-22 | 2020-05-29 | 浙江舜仕汽车技术有限公司 | Blanking and shaping die for automobile A-pillar sheet metal part |
-
2018
- 2018-11-22 CN CN201821935033.5U patent/CN209792394U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111203478A (en) * | 2018-11-22 | 2020-05-29 | 浙江舜仕汽车技术有限公司 | Blanking and shaping die for automobile A-pillar sheet metal part |
| CN111203478B (en) * | 2018-11-22 | 2024-04-30 | 浙江舜仕汽车技术有限公司 | Blanking and shaping die for automobile A column sheet metal part |
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| GR01 | Patent grant | ||
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Granted publication date: 20191217 |