A side flanging die structure for a vehicle body stamping

Abstract

The utility model discloses a kind of side flanging die structure of vehicle body stamping part, belong to flanging die technical field, including upper die structure and lower die structure, the upper die structure includes upper die holder, the upper die holder below is provided with positive pressure core, the upper die holder bottom two sides are respectively provided with driving block and self-made inclined wedge driving block;The lower die structure includes lower die holder, the lower die holder is provided with self-made inclined wedge sliding seat corresponding self-made inclined wedge driving block on, trolley is slidably installed on the lower die holder, trolley inwall is installed with trolley insert block, the lower die holder is slidably installed with side pressure block and side flanging cutter block along horizontal direction, nitrogen spring fixing block, return top block and nitrogen spring are set on the lower die holder, the spring fixing block is connected with nitrogen spring by bolt, the utility model discloses a kind of side flanging die structure capable of solving the difficulty of taking piece, guaranteeing action cooperativity and processing precision.

Description

Technical Field

[0001] This utility model relates to the field of flanging die technology, and in particular to a side flanging die structure for car body stamping parts. Background Technology

[0002] In the automotive body manufacturing industry, the side flanging of stamped parts is a key process for achieving component connection, enhancing structural strength, and meeting assembly precision requirements. For some body stamped parts (such as door sill reinforcements and pillar connectors), their sides need to form a C-shaped semi-enclosed structure through partial flanging. This structure, with its symmetrical arrangement of flanging on both sides, can effectively improve the fit and connection stability between the component and adjacent parts, and is therefore widely used in lightweight and high-strength body design.

[0003] However, there are significant technical challenges in the side flanging process of the C-shaped semi-enclosed structure: since both sides of the stamped part have inward flanging, and the contact surface between the workpiece and the lower die is in a semi-enclosed state after flanging, if a traditional fixed structure lower die is used, the workpiece will be "stuck" by the support part of the lower die after flanging and cannot be directly removed from the lower die.

[0004] To address this issue, existing technologies often employ a split lower mold structure or rely on manual part removal. This results in complex mold structures, reduced positioning accuracy, and a tendency for workpiece deformation and surface damage. Furthermore, traditional molds suffer from poor coordination between the pressing and flanging actions, leading to workpiece misalignment and suboptimal flanging quality. Therefore, there is an urgent need for a side-flanging mold structure that can solve the part removal difficulties while ensuring coordinated action and processing accuracy. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the technical problem to be solved by this utility model is to propose a side-flanging mold structure that can solve the difficulty of picking up parts and ensure the coordination of actions and processing accuracy.

[0006] To achieve this objective, the present invention adopts the following technical solution: This utility model provides a side-flanging mold structure for body stamping parts, including an upper mold structure and a lower mold structure. The upper mold structure includes an upper mold base, a positive pressure core is provided below the upper mold base, and a driving block and a self-made inclined wedge driving block are respectively provided on both sides of the bottom of the upper mold base. The lower mold structure includes a lower mold base, on which a self-made wedge slide is provided corresponding to the self-made wedge drive block. A trolley is slidably mounted on the lower mold base, and a trolley insert is installed on the inner wall of the trolley. A side pressure block and a side flanging cutter block are slidably mounted on the lower mold base in the horizontal direction. The side pressure block and the side flanging cutter block are located between the self-made wedge slide and the workpiece. A nitrogen spring fixing block, a return top block, and a nitrogen spring are provided on the lower mold base. The nitrogen spring fixing block is connected to the nitrogen spring by bolts.

[0007] The preferred technical solution of this utility model is that the nitrogen spring includes a first nitrogen spring and a second nitrogen spring, the return block includes a first return block and a second return block, one end of the first nitrogen spring is mounted on a self-made inclined wedge slide, and the other end is connected to the first return block, and the second nitrogen spring is mounted between the nitrogen spring fixing block and the second return block.

[0008] The preferred technical solution of this utility model is that the trolley inserts are provided in two sets and are symmetrically arranged on the inner wall of the trolley, and the driving block is arranged between the two sets of trolley inserts.

[0009] The preferred technical solution of this utility model is that a first wear-resistant plate is provided between the self-made wedge drive block and the self-made wedge slide, and a second wear-resistant plate is provided between the trolley and the lower mold base.

[0010] A preferred embodiment of this invention is that the lower mold base is provided with a slide rail adapted to the trolley.

[0011] The preferred technical solution of this utility model is that the side-flipping blade block is connected to the self-made inclined wedge slide by a key.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, through the design of the trolley and trolley insert, enables convenient removal of the workpiece after the side flange is turned, breaking through the limitation of the traditional fixed lower mold that cannot remove parts, and greatly improving production efficiency; by setting the first wear-resistant plate and the second wear-resistant plate, the wear between the self-made wedge drive block and the self-made wedge slide, and between the trolley and the lower mold base is reduced, thereby reducing mold maintenance costs and extending its service life; by cooperating with the first nitrogen spring and the second nitrogen spring and the return top block, the return action of the mold components is stable and reliable, improving the overall smoothness of mold operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the side-flanging mold structure provided in a specific embodiment of this utility model. The attached diagram lists the components represented by each number as follows: 1. Upper mold base; 2. Side pressure block; 3. Positive pressure core; 4. Drive block; 5. Self-made wedge drive block; 6. First wear-resistant plate; 7. Lower mold base; 8. Self-made wedge slide; 9. Key; 10. Side flange cutter block; 11. First nitrogen spring; 12. First return ejector block; 13. Nitrogen spring fixing block; 14. Second nitrogen spring; 15. Second return ejector block; 16. Trolley; 17. Second wear-resistant plate; 18. Trolley insert. Detailed Implementation

[0014] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0015] A side-flanging die structure for a car body stamping part includes an upper die structure and a lower die structure. The upper die structure includes an upper die base 1, a positive pressure core 3 is provided below the upper die base 1, and a driving block 4 and a self-made inclined wedge driving block 5 are respectively provided on both sides of the bottom of the upper die base 1. The lower mold structure includes a lower mold base 7, on which a self-made wedge slide 8 is provided corresponding to the self-made wedge drive block 5. A trolley 16 is slidably mounted on the lower mold base 7, and a trolley insert 18 is installed on the inner wall of the trolley 16. A side pressure block 2 and a side flange cutting block 10 are slidably mounted on the lower mold base 7 in the horizontal direction. The side pressure block 2 and the side flange cutting block 10 are located between the self-made wedge slide 8 and the workpiece. A nitrogen spring fixing block 13, a return top block, and a nitrogen spring are provided on the lower mold base 7. The nitrogen spring fixing block 13 is connected to the nitrogen spring by bolts.

[0016] During mold operation, the outer guide plates of the upper and lower molds contact each other, achieving initial guidance. The upper mold descends, and the drive block 4 pushes the trolley 16 to move outward. The trolley insert 18 moves synchronously, and at the same time, the self-made wedge drive block 5 drives the self-made wedge slide 8 to move until the trolley 16 is in place. The side-flipping lower mold reaches the working position, and the upper mold continues to descend. The positive pressure core 3 begins positive pressure, pressing the upper side surface of the workpiece. The self-made wedge drive block 5, in conjunction with the self-made wedge slide 8, pushes the side pressure block 2 to press the workpiece side. Block 5, in conjunction with the self-made inclined wedge slide 8, continues to push the side-flanging blade block 10 horizontally until the flanging action is fully in place. If there is a punching process, the punching is completed. After the process is completed, the upper die retracts, driving the self-made inclined wedge drive block 5 and drive block 4 to retract, the positive pressure core 3 rises, the trolley 16 retracts, and the workpiece can be easily removed. This achieves convenient removal of the workpiece after side flanging, breaking through the limitation of the traditional fixed lower die being unable to remove the workpiece, greatly improving production efficiency, solving the problem of difficult removal, and ensuring the coordination of actions and processing accuracy.

[0017] As a possible implementation of this solution, preferably, the nitrogen spring includes a first nitrogen spring 11 and a second nitrogen spring 14, and the return top block includes a first return top block 12 and a second return top block 15. One end of the first nitrogen spring 11 is mounted on the self-made inclined wedge slide 8, and the other end is connected to the first return top block 12. The second nitrogen spring 14 is mounted between the nitrogen spring fixing block 13 and the second return top block 15.

[0018] The cooperation of the first nitrogen spring 11, the second nitrogen spring 14, the first return block 12, and the second return block 15 ensures the stability and reliability of the return stroke of the self-made inclined wedge slide 8 and related components, and improves the smoothness of the mold operation.

[0019] As a possible implementation of this solution, preferably, two sets of the trolley inserts 18 are provided and symmetrically arranged on the inner wall of the trolley 16, and the drive block 4 is arranged between the two sets of trolley inserts 18.

[0020] The symmetrical arrangement of the trolley insert 18 and the position design of the drive block 4 ensure that the trolley 16 is subjected to uniform force and moves smoothly when it moves, thus ensuring the accuracy of the working position of the lower die of the side flange and thus guaranteeing the flange forming quality.

[0021] As a possible implementation of this solution, preferably, a first wear-resistant plate 6 is provided between the self-made wedge drive block 5 and the self-made wedge slide 8, and a second wear-resistant plate 17 is provided between the trolley 16 and the lower mold base 7.

[0022] The first wear-resistant plate 6 and the second wear-resistant plate 17 effectively reduce the wear between the self-made wedge drive block 5 and the self-made wedge slide 8, and between the trolley 16 and the lower mold base 7, thus extending the service life of the mold and reducing maintenance costs.

[0023] As a possible implementation of this solution, preferably, the lower mold base 7 is provided with a slide rail adapted to the trolley 16.

[0024] The slide rail on the lower mold base 7, which is adapted to the trolley 16, provides precise guidance for the sliding of the trolley 16, ensuring the straightness and positional accuracy of the trolley 16's movement, and ensuring the accuracy of the side-flipping action.

[0025] As a possible implementation of this solution, preferably, the side-flanging blade block 10 is connected to the self-made inclined wedge slide block 8 via a key 9.

[0026] The side-flanging cutter block 10 is connected to the self-made inclined wedge slide block 8 via key 9, so that the two are firmly connected and move synchronously, ensuring the accuracy of the flanging action and realizing high-precision forming of the side-flanging.

[0027] This utility model has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. This utility model is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are all within the protection scope of this utility model.

Claims

1. A side flanging die structure for a car body stamping part, characterized in that: It includes an upper mold structure and a lower mold structure. The upper mold structure includes an upper mold base (1), a positive pressure core (3) is provided below the upper mold base (1), and a driving block (4) and a self-made inclined wedge driving block (5) are respectively provided on both sides of the bottom of the upper mold base (1). The lower mold structure includes a lower mold base (7), a self-made wedge slide (8) is provided on the lower mold base (7) corresponding to the self-made wedge drive block (5), a trolley (16) is slidably installed on the lower mold base (7), a trolley insert (18) is installed on the inner wall of the trolley (16), a side pressure block (2) and a side flange cutter block (10) are slidably installed on the lower mold base (7) in the horizontal direction, the side pressure block (2) and the side flange cutter block (10) are located between the self-made wedge slide (8) and the workpiece, and a nitrogen spring fixing block (13), a return top block and a nitrogen spring are provided on the lower mold base (7), the nitrogen spring fixing block (13) is connected to the nitrogen spring by bolts.

2. The side flanging die structure for a car body stamping part according to claim 1, characterized in that: The nitrogen spring includes a first nitrogen spring (11) and a second nitrogen spring (14), and the return top block includes a first return top block (12) and a second return top block (15). One end of the first nitrogen spring (11) is mounted on the self-made inclined wedge slide (8), and the other end is connected to the first return top block (12). The second nitrogen spring (14) is mounted between the nitrogen spring fixing block (13) and the second return top block (15).

3. The side flanging die structure for a car body stamping part according to claim 1, characterized in that: The trolley inserts (18) are provided in two sets and are symmetrically arranged on the inner wall of the trolley (16). The drive block (4) is arranged between the two sets of trolley inserts (18).

4. The side flanging die structure for a car body stamping part according to claim 1, characterized in that: A first wear-resistant plate (6) is provided between the self-made wedge drive block (5) and the self-made wedge slide (8), and a second wear-resistant plate (17) is provided between the trolley (16) and the lower mold base (7).

5. The side flanging die structure for a car body stamping part according to claim 1, characterized in that: The lower mold base (7) is provided with a slide rail adapted to the trolley (16).

6. The side flanging die structure for a car body stamping part according to claim 1, characterized in that: The side-flanged blade block (10) is connected to the self-made inclined wedge slide block (8) via a key (9).

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