CN204817667U - Slant cut -out press structure of car panel beating stamping workpiece - Google Patents
Slant cut -out press structure of car panel beating stamping workpiece Download PDFInfo
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- CN204817667U CN204817667U CN201520516990.4U CN201520516990U CN204817667U CN 204817667 U CN204817667 U CN 204817667U CN 201520516990 U CN201520516990 U CN 201520516990U CN 204817667 U CN204817667 U CN 204817667U
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- block mechanism
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- stamping parts
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Abstract
The utility model relates to a to a mould structure of car panel beating stamping workpiece, a slant cut -out press structure of car panel beating stamping workpiece, the slant is punched a hole the mechanism and is included and level motion be equipped with a slider mechanism (15) and the slant campaign of the die that punches a hole (8) that be equipped with the 2nd slider mechanism (1) of the terrace die that punches a hole (4), material returned pole (10) pass through spacing unit and reset spring (9) are connected with a slider mechanism, when material returned pole (10) and dog (13) contact, extrusion reset spring (9), waste material (19) is released to the outside vestibule that stretches out the die that punches a hole (8) that removes of tip of material returned pole (10). Adopt the utility model discloses ensure that waste material that the slant is punched a hole flows to the waste material sliding material plate or in the dirty tank smoothly, can improve mould instrument body intensity simultaneously, improve and put getting of on -line into production and put a transport condition, guarantees stable part and fix a position that the beat of improving production improves production efficiency.
Description
Technical field
The utility model relates to a kind of mould structure to plates of automobile stamping parts, particularly relates to the oblique punching die structure of one of plates of automobile stamping parts.
Background technology
At present, in automobile manufacturing field, usually all identical with punching direction to the waste streams outgoing direction of metal plate punching part punching, this impact style, be generally feasible for plate shaped stamping parts, material loading, punching, blanking, also can be suitable for automation.But for the edge of sheet material, through twice bending, the similar n shape of Formation cross-section, in the punching of flanging place, after its material loading, punching, blanking and punching, the delivery ratio of waste material is more difficult, especially just more difficult for the part that platen area is larger.The bonnet part of such as passenger car, bonnet area is very large, and lower limb must go out the light hole of some rectangles after twice bending, and punch pattern traditional at present is just difficult to realize.
In addition, for some metal plate punching parts oblique punching can not realize the taking-up of waste material, in order to complete the bending edges punching of bending component smoothly, generally adopting traditional hook punch mechanism or after rotating metal plate punching part, bending edges being rotated to and has vertically come with horizontal side punch mechanism; But often there are some problems in these mechanisms.
First, for hook punch mechanism, after punching terminates, in order to ensure the smooth taking-up of part, the hook hooked in punch mechanism rushes parts needs larger stroke of stepping down, but also want installing mechanism slide block hooks in headspace to rush punch, the parts such as side pressure flitch, usually hook being rushed parts, to be designed to cross section be triangle, the structures such as trapezoidal or wedge shape ensure certain stroke of stepping down, but it is thin that such design often causes hook to rush parts, intensity difference, stress is poor, not only affect punching precision, and be easy to cause this place of slide block to rupture, there is larger potential safety hazard.Therefore the punching of this form all receives certain restriction in big-and-middle-sized metal plate punching part side punching, the application of oblique impact hole.
With reference to figure 1, hook punch mechanism 32 and be provided with punching die, after completing punching, hook the drive unit 32b of punch mechanism and starts, hook rushes after parts 32a moves LAP h towards upper left, and workpiece 17 takes out.
Second, for horizontal side punch mechanism, although bending edges can complete the outflow of normal punching and waste material after vertically putting, but due to non-bending edges vertically put or oblique put can cause part drop and the degree of depth large, for part in transfer matic production process to pick and place stroke large especially, the operation stroke of patrix is large, have a strong impact on line tact and production efficiency, part location difficulty in addition, location instability can improve percent defective and outage rate, cause damage to production equally, also waste streams outbound path can be caused complex-shaped, also easy reservation or revocation material, and it is invisible, these are all that automated production is abstained from.
With reference to figure 2, workpiece 17 is vertically put, and after bending edges to be processed completes the outflow of normal punching and waste material, patrix 21 moves up one section of larger row journey, and workpiece 17 could take out.
Utility model content
The purpose of this utility model is the shortcoming in order to overcome prior art, there is provided a kind of can safe, conveniently place stamping parts, be convenient to the waste material after punching automatically release, after punching, workpiece takes out easily, and favourable production lines is sent, the body of tool of mould is rational in infrastructure, and intensity is good, non-damageable mould structure.
The purpose of this utility model is realized by following technical scheme:
An oblique punching die structure for plates of automobile stamping parts, is characterized in that:
Described oblique punch mechanism comprises the first slide block mechanism and the second slide block mechanism, and the first slide block mechanism is the slide block mechanism of horizontal movement, and the second slide block mechanism is the slide block mechanism of oblique movement, and the working face of its first slide block mechanism and the second slide block mechanism is arranged in opposite directions;
First slide block mechanism is provided with punching concave die, and the second slide block mechanism is provided with piercing punch, and the punching direction of described punching concave die is consistent with piercing punch;
One material returned bar, described material returned bar is connected with the first slide block mechanism with back-moving spring by position-limiting unit;
One block, described block is fixedly connected on pedestal;
Described first slide block mechanism is in the motion leaving the second slide block mechanism, and its material returned bar contacts with block, pressed home spring, and the vestibule of punching concave die is stretched out in the end of material returned bar outwards movement;
Described first slide block mechanism and the second slide block mechanism are the part of the lower die of described oblique punch mechanism, when upper and lower mould closure state, described first slide block mechanism and the second slide block mechanism close up, and when upper and lower mould open mode, described first slide block mechanism is separated with the second slide block mechanism.
Further, described stamping parts is the n shape on a long limit at the utility model mould schematic diagram direction of observation, and long limit is large panel, and minor face is punched-plate, and centre is bending edges, it is characterized in that:
Described second slide block mechanism comprises guide plate obliquely, and described piercing punch is configured at obliquely on guide plate;
The upper surface of described first slide block mechanism be the long limit of the large panel of stamping parts shelve face,
Punching concave die is less than the bending edges length of stamping parts together with the length that material returned bar rearwardly exits;
When described first slide block mechanism and the second slide block mechanism close, piercing punch and punching concave die merge, and therebetween, punching concave die props up the bending edges inwall of stamping parts in the minor face clamping of stamping parts.
Further again, when described stamping parts is placed, port curved in minor face and described punching concave die overhanging end keep d horizontal range, and d length is 5-10mm.
Further again, the contact surface of described material returned bar and block is vertical plane, or the face had angle with vertical shape, if the punching direction of described mould and horizontal direction angle are α, then contact surface is less than α/2 with the vertical angle formed.
Further again, offer the through hole consistent with material returned bar moving direction at the afterbody of described material returned bar, insert the caging bolt be fixed in punching concave die in through hole, the bolt head of caging bolt is placed restrictions on material returned bar and is rearwardly ejected.
Further again, the top of described piercing punch also arranges the side pressure flitch supported by lateral pressing flat spring, and described side pressure flitch is provided with the punch hole of mating with punch.
Further again, also configure bullet ejector pin at the end face that stretches out of described piercing punch and/or material returned bar.
Further again, described second slide block mechanism also comprises the A slide block moved up and down, and is converted to the B slide block moved horizontally through inclined-plane, and is converted to the C slide block formation of oblique movement through vertical plane; First slide block mechanism also comprises the D slide block moved up and down, and is converted to the E slide block moved horizontally forms through inclined-plane.
Adopt the technical program to carry out punching and have four-stage,
First stage: mould is opened, place stamping parts
Upper holding pad is in the open mode of press top dead-centre with patrix, the punching concave die be arranged on the first slide block mechanism is separated from each other with the piercing punch being arranged on the second slide block mechanism, block is in material returned bar and contacts or contactless state, and material returned bar makes the end of material returned bar be in the vestibule of punching concave die by back-moving spring and position-limiting unit; Downwards, long limit is shelved on the upper surface of the first slide block mechanism for the bending edges of stamping parts and minor face;
Second stage: mould closes, punching
Patrix and upper holding pad move downward, punching concave die on first slide block mechanism moves in opposite directions with the piercing punch being arranged on the second slide block mechanism, punch slide block diagonally moves in upper guide plate direction, the cavity of long limit between patrix and the first slide block mechanism upper surface of stamping parts, punching concave die props up the bending edges inwall of stamping parts, the minor face of stamping parts is held between punching concave die and the cutting edge of piercing punch, patrix and upper holding pad continue to move downward, piercing punch punching, punched scrap is contained in punching concave die vestibule;
Phase III: punching terminates, open mould
Patrix drives upper holding pad to move upward together, upper holding pad throws off stamping parts, punching concave die on first slide block mechanism is separated from each other with the piercing punch being arranged on the second slide block mechanism, and piercing punch leaves stamping parts, the material returned bar just contact blocks in punching concave die;
Fourth stage: eject waste material, takes out stamping parts
Punching concave die continues to retreat, the material returned bar compressing block in punching concave die, pressed home spring, the end outwards movement of material returned bar, and punched scrap is ejected punching concave die vestibule, falls on the waste sliding plate of below or reject chute, takes out stamping parts.
The beneficial effects of the utility model:
For special plates of automobile stamping parts, special construction: large area sheet material, punching is positioned at the flanging flanging part again of side, adopts the technical program:
(1) solve waste material and flow out difficult problem, guarantee that punched scrap flows out on waste sliding plate or in reject chute smoothly;
(2) in order to improve mold tool body and side blow mechanism tool body intensity, the economic loss avoiding its frequent breakage to cause and to normally producing the adverse effect caused;
(3) improve on a production line pick and place part transport condition, and ensure stable part location, improve productive temp, improve production efficiency.
Accompanying drawing explanation
The above and other feature of the utility model, character and advantage are by more obvious by what become below in conjunction with the description of drawings and Examples, and Reference numeral identical in the accompanying drawings represents identical feature all the time, wherein:
Fig. 1 is the schematic diagram hooking punch mechanism in prior art;
Fig. 2 is the schematic diagram of horizontal side punch mechanism in prior art;
Fig. 3 is a kind of embodiment of oblique punching die structure of the utility model plates of automobile stamping parts, and plates of automobile stamping parts is in the present embodiment the stereogram of passenger car back shroud workpiece;
Fig. 4 is the view that Fig. 3 is observed by automobile rear;
Fig. 5 is the observation view of Fig. 3 automobile rear case plate workpiece at the utility model mould schematic diagram direction of observation;
Fig. 6 is a kind of embodiment structure chart of the oblique punching die structure of the utility model, shows the first stage of hole-punching method four-stage: mould is opened simultaneously, places the state of stamping parts;
Fig. 7 is the second stage adopting the oblique punching die structure of the utility model to carry out punching four-stage: mould closes, punching view;
Fig. 8 is the partial enlarged drawing at Fig. 7 punching position;
Fig. 9 is the phase III adopting the oblique punching die structure of the utility model to carry out punching four-stage: punching terminates, and opens mould view;
Figure 10 is the fourth stage adopting the oblique punching die structure of the utility model to carry out punching four-stage: eject waste material, takes out stamping parts view;
Figure 11 is a kind of embodiment of the oblique punching die structure of the utility model, and material returned bar adopts assembling, the structural representation of caging bolt.
In figure, 1-second slide block mechanism, 1a-A slide block, 1b-B slide block, 1c-C slide block, 2-punch slide guide strip, 3-lateral pressing flat spring, 4-piercing punch, 5-side pressure flitch, 6-bullet ejector pin, 7-bullet ejector pin, 8-punching concave die, 9-back-moving spring, 10-material returned bar, 11-waste sliding plate, 12-pedestal, 13-block, 14-die slide guide strip, 15-first slide block mechanism, 15d-D slide block, 15e-E slide block, the upper holding pad of 16-, 17-workpiece, the long limit of a-, b-minor face, c-bending edges, 18-caging bolt, 19-waste material.
21-patrix, 22-horizontal side punch mechanism.
31-patrix, 32-hook punch mechanism, and 32a-hooks and rushes parts, and 32b-hooks the drive unit of punch mechanism.
Detailed description of the invention
Structure of the present utility model is further described below in conjunction with accompanying drawing.
An oblique punching die structure for plates of automobile stamping parts,
Described oblique punch mechanism comprises the first slide block mechanism 15 and the second slide block mechanism 1, first slide block mechanism 15 is the slide block mechanism of horizontal movement, second slide block mechanism is the slide block mechanism of oblique movement, and the working face of its first slide block mechanism 15 and the second slide block mechanism 1 is arranged in opposite directions;
First slide block mechanism 15 is provided with punching concave die 8, and the second slide block mechanism 1 is provided with piercing punch 4, and the punching direction of described punching concave die 8 is consistent with piercing punch 4;
One material returned bar 10, described material returned bar 10 is connected with the first slide block mechanism with back-moving spring 9 by position-limiting unit;
One block 13, described block 13 is fixedly connected on static pedestal 12;
Described first slide block mechanism 15 is in the motion leaving the second slide block mechanism 1, and its material returned bar 10 contacts with block 13, pressed home spring 9, and the vestibule of punching concave die 8 is stretched out in the end of material returned bar 10 outwards movement;
Described first slide block mechanism 15 and the second slide block mechanism 1 are the part of the lower die of described oblique punch mechanism, when upper and lower mould closure state, described first slide block mechanism 15 and the second slide block mechanism 1 close up, and when upper and lower mould open mode, described first slide block mechanism 15 is separated with the second slide block mechanism 1.
As concrete implementation example, described stamping parts 17 is the n shape on a long limit at the utility model mould schematic diagram direction of observation, and long limit a is large panel, and minor face b is punched-plate, and centre is bending edges c, similar automobile, the bonnet part of passenger car.
Described second slide block mechanism 1 comprises guide plate 2 obliquely, and described piercing punch 4 is configured at obliquely on guide plate 2;
The upper surface of described first slide block mechanism 15 be the large long limit a of panel of stamping parts 17 shelve face,
Punching concave die 8 is less than the bending edges c length of stamping parts 17 together with the length that material returned bar 10 rearwardly exits;
When described first slide block mechanism 15 and the second slide block mechanism 1 close, piercing punch 4 and punching concave die 8 merge, and the minor face b of stamping parts 17 clamps therebetween, and punching concave die 8 props up the bending edges c inwall of stamping parts 17.
Good embodiment is, when described stamping parts 17 is placed, port curved in minor face b and described punching concave die 8 overhanging end keep d horizontal range, and d length is 5-10mm.Putting when keeping distance like this to be convenient to stamping parts 17 punching, the also point of unlikely damage stamping parts 17 and punching concave die 8.
Good embodiment is, the contact surface of described material returned bar 10 and block 13 is vertical plane, or the face had angle with vertical shape, if the punching direction of described mould and horizontal direction angle are α, then contact surface is less than α/2 with the vertical angle formed.Vertical plane is selected to be convenient to design, making, but special circumstances, need according to occasion or place restrictions on by occasion, the angle of the technical program can be selected to configure and also can reach the purpose of this utility model.
Good embodiment is, offers the through hole consistent with material returned bar 10 moving direction at the afterbody of described material returned bar 10, and insert the caging bolt 18 be fixed in punching concave die 8 in through hole, the bolt head of caging bolt 18 is placed restrictions on material returned bar 10 and rearwardly ejected.This scheme is optionally place restrictions on one of scheme that material returned bar 10 rearwardly ejects, and structure is simple, easy to assembly, uses reliable.
Good embodiment is, the top of described piercing punch 4 also arranges the side pressure flitch 5 supported by lateral pressing flat spring 3, and described side pressure flitch 5 is provided with the punch hole of mating with punch.This measure is favourable pushes down stamping parts 17, favourable stable punching operation.
Good embodiment is, also configures bullet ejector pin 6,7 at the end face that stretches out of described piercing punch 4 and/or material returned bar 10.After this programme can make punching, waste material 19 is unlikely is taken out of by piercing punch 4, such that waste material 19 is unlikely to be released by material returned bar 10 and take back.
Detailed description of the invention can be, described second slide block mechanism 1 also comprises the A slide block 1a moved up and down, and is converted to the B slide block 1b moved horizontally through inclined-plane, and forms through the C slide block 1c that vertical plane is converted to oblique movement; First slide block mechanism 15 also comprises the D slide block 15d moved up and down, and is converted to the E slide block 15e moved horizontally forms through inclined-plane.This structure, be convenient to the second slide block mechanism 1 simple, directly, reliably transmit power in the desired direction, be also convenient to the first slide block mechanism 15 and directly transmit power in the desired direction.
The hole-punching method of the oblique punching die structure of described plates of automobile stamping parts has four-stage,
First stage: mould is opened, place stamping parts
Upper holding pad is in the open mode of press top dead-centre with patrix, the punching concave die 8 be arranged on the first slide block mechanism 15 is separated from each other with the piercing punch 4 being arranged on the second slide block mechanism 1, block 13 is in material returned bar 10 and contacts or contactless state, and material returned bar 10 makes the end of material returned bar 10 be in the vestibule of punching concave die 8 by back-moving spring 9 and position-limiting unit; The bending edges c of stamping parts 17 and minor face b is downward, and long limit a is shelved on the upper surface of the first slide block mechanism 15;
Second stage: mould closes, punching
Patrix and upper holding pad move downward, punching concave die 8 on first slide block mechanism 15 moves in opposite directions with the piercing punch 4 being arranged on the second slide block mechanism 1, punch slide block 4 diagonally moves in upper guide plate 2 direction, the cavity of long limit a between patrix and the first slide block mechanism 15 upper surface of stamping parts 17, punching concave die 8 props up the bending edges c inwall of stamping parts 17, the minor face b of stamping parts 17 is held between the cutting edge of punching concave die 8 and piercing punch 4, patrix and upper holding pad continue to move downward, piercing punch 4 punching, punched scrap 19 is contained in punching concave die 8 vestibule;
Phase III: punching terminates, open mould
Patrix drives upper holding pad to move upward together, upper holding pad throws off stamping parts 17, punching concave die 8 on first slide block mechanism 15 is separated from each other with the piercing punch 4 being arranged on the second slide block mechanism 1, and piercing punch 4 leaves stamping parts 17, the just contact blocks 13 of the material returned bar 10 in punching concave die 8;
Fourth stage: eject waste material, takes out stamping parts
Punching concave die 8 continues to retreat, and block 13 oppressed by the material returned bar 10 in punching concave die 8, pressed home spring 9, the end outwards movement of material returned bar 10, and punched scrap is ejected punching concave die 8 vestibule, falls on the waste sliding plate of below or reject chute, takes out stamping parts.
Although the utility model with preferred embodiment openly as above, it is not for limiting the utility model.Any those skilled in the art, not departing from spirit and scope of the present utility model, can make possible variation and amendment.Therefore, every content not departing from technical solutions of the utility model, any amendment done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all fall within protection domain that claim of the present utility model defines.
Claims (8)
1. an oblique punching die structure for plates of automobile stamping parts, is characterized in that:
Described oblique punch mechanism comprises the first slide block mechanism (15) and the second slide block mechanism (1), the slide block mechanism that first slide block mechanism (15) is horizontal movement, second slide block mechanism is the slide block mechanism of oblique movement, and its first slide block mechanism (15) is arranged in opposite directions with the working face of the second slide block mechanism (1);
First slide block mechanism (15) is provided with punching concave die (8), second slide block mechanism (1) is provided with piercing punch (4), and the punching direction of described punching concave die (8) is consistent with piercing punch (4);
One material returned bar (10), described material returned bar (10) is connected with the first slide block mechanism with back-moving spring (9) by position-limiting unit;
One block (13), described block (13) is fixedly connected on pedestal (12);
Described first slide block mechanism (15) is in the motion leaving the second slide block mechanism (1), its material returned bar (10) contacts with block (13), pressed home spring (9), the vestibule of punching concave die (8) is stretched out in the end of material returned bar (10) outwards movement;
The part of the lower die that described first slide block mechanism (15) and the second slide block mechanism (1) are described oblique punch mechanism, when upper and lower mould closure state, described first slide block mechanism (15) and the second slide block mechanism (1) close up, when upper and lower mould open mode, described first slide block mechanism (15) is separated with the second slide block mechanism (1).
2. the oblique punching die structure of plates of automobile stamping parts according to claim 1, described stamping parts (17) is the n shape on a long limit at the utility model mould schematic diagram direction of observation, long limit (a) is large panel, minor face (b) is punched-plate, centre is bending edges (c), it is characterized in that:
Described second slide block mechanism (1) comprises guide plate (2) obliquely, described piercing punch (4) is configured at obliquely on guide plate (2);
The upper surface of described first slide block mechanism (15) be the large long limit (a) of panel of stamping parts (17) shelve face,
Punching concave die (8) is less than bending edges (c) length of stamping parts (17) together with the length that material returned bar (10) rearwardly exits;
When described first slide block mechanism (15) and the second slide block mechanism (1) close, piercing punch (4) and punching concave die (8) merge, therebetween, punching concave die (8) props up bending edges (c) inwall of stamping parts (17) in minor face (b) clamping of stamping parts (17).
3. the oblique punching die structure of plates of automobile stamping parts according to claim 2, it is characterized in that: when described stamping parts (17) is placed, in minor face (b), curved port and described punching concave die (8) overhanging end keep d horizontal range, and d length is 5-10mm.
4. the oblique punching die structure of plates of automobile stamping parts according to claim 1 or 2, it is characterized in that: the contact surface of described material returned bar (10) and block (13) is vertical plane, or the face to have angle with vertical shape, if the punching direction of described mould and horizontal direction angle are α, then contact surface is less than α/2 with the vertical angle formed.
5. the oblique punching die structure of plates of automobile stamping parts according to claim 1 or 2, it is characterized in that: offer the through hole consistent with material returned bar (10) moving direction at the afterbody of described material returned bar (10), insert the caging bolt (18) be fixed in punching concave die (8) in through hole, the bolt head of caging bolt (18) is placed restrictions on material returned bar (10) and is rearwardly ejected.
6. the oblique punching die structure of plates of automobile stamping parts according to claim 1 or 2, it is characterized in that: the top of described piercing punch (4) also arranges the side pressure flitch (5) supported by lateral pressing flat spring (3), described side pressure flitch (5) is provided with the punch hole of mating with punch.
7. the oblique punching die structure of plates of automobile stamping parts according to claim 1 or 2, is characterized in that: also configure play ejector pin (6,7) at the end face that stretches out of described piercing punch (4) and/or material returned bar (10).
8. the oblique punching die structure of plates of automobile stamping parts according to claim 1 or 2, it is characterized in that: described second slide block mechanism (1) also comprises the A slide block (1a) moved up and down, be converted to the B slide block (1b) moved horizontally through inclined-plane, and be converted to C slide block (1c) formation of oblique movement through vertical plane; First slide block mechanism (15) also comprises the D slide block (15d) moved up and down, and is converted to the E slide block (15e) moved horizontally forms through inclined-plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520516990.4U CN204817667U (en) | 2015-07-16 | 2015-07-16 | Slant cut -out press structure of car panel beating stamping workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520516990.4U CN204817667U (en) | 2015-07-16 | 2015-07-16 | Slant cut -out press structure of car panel beating stamping workpiece |
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| Publication Number | Publication Date |
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| CN204817667U true CN204817667U (en) | 2015-12-02 |
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| CN201520516990.4U Active CN204817667U (en) | 2015-07-16 | 2015-07-16 | Slant cut -out press structure of car panel beating stamping workpiece |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959460A (en) * | 2015-07-16 | 2015-10-07 | 上海大众汽车有限公司 | Slant punching die structure and punching method for automobile metal plate punch piece |
| CN110193551A (en) * | 2019-06-06 | 2019-09-03 | 瑞鹄汽车模具股份有限公司 | A kind of vehicle cladding element punching molding die and its impact forming method |
-
2015
- 2015-07-16 CN CN201520516990.4U patent/CN204817667U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959460A (en) * | 2015-07-16 | 2015-10-07 | 上海大众汽车有限公司 | Slant punching die structure and punching method for automobile metal plate punch piece |
| CN110193551A (en) * | 2019-06-06 | 2019-09-03 | 瑞鹄汽车模具股份有限公司 | A kind of vehicle cladding element punching molding die and its impact forming method |
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| C14 | Grant of patent or utility model | ||
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Address after: 201102 Shanghai city Jiading District Anting Road No. 123 Patentee after: SAIC VOLKSWAGEN AUTOMOTIVE COMPANY LIMITED Address before: 201102 Shanghai city Jiading District Anting Road No. 123 Patentee before: Dazhang Automobile Co., Ltd., Shanghai |