Reverse bending die structure

Abstract

The utility model relates to a reverse bending die structure, including upper die seat and lower die seat, the lower die seat upper end middle part is installed with lower module, the lower die seat upper end is located the both sides of lower module and is installed with one lower slide and the reset piece no.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, and in particular to a reverse bending die structure. Background Technology

[0002] The upper trim panel of the taillights is a key exterior component of the car's rear. Its main function is to cover the upper gap of the taillight assembly, enhance the visual integrity of the rear, and achieve precise assembly with the tailgate and taillight body. Figure 7 As shown, the upper trim panel 19 of the taillight has a curved shape (to match the streamlined design of the rear of the car body). The edge needs to be processed with two reverse bends (i.e., bend edges 28). Since the bend edges 28 are inwardly snapping flanges, conventional molds are not easy to demold after the bend edges 28 are formed. The existing structure needs to be optimized to solve this problem. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a reverse bending mold structure. When reverse bending is required, the two lower bending blocks open to assist the upper bending block in bending. After processing, the two lower bending blocks move closer together to facilitate demolding of the bent edge.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a reverse bending die structure is provided, including an upper die base and a lower die base. A lower module is installed in the middle of the upper end of the lower die base. An inclined sliding lower slider and a reset component for the lower slider are installed on both sides of the lower module at the upper end of the lower die base. A lower bending block is fixed on the side of the upper end of the lower slider near the lower module. A support block is installed on the other side of the upper end of the lower slider. A lower wedge is installed in the middle of the upper end of the lower slider. An upper module that can be raised and lowered is installed at the lower end of the upper die base. An elastic element is installed between the lower end of the upper die base and the upper module. A slide is installed on both sides of the upper module at the lower end of the upper die base. An upper slider and a reset component for the upper slider are installed in the slide. An upper bending block is installed on the side of the lower part of the upper slider near the upper module. A slope that cooperates with the lower wedge is provided on the other side of the lower part of the upper slider. An insertion part that inserts into the lower wedge and the support block is provided at the lower end of the upper die base.

[0005] As a supplement to the technical solution described in this utility model, a guide groove is vertically opened on both sides of the upper end of the lower mold base, and wear-resistant blocks are installed on the inner walls around the guide groove. Guide plates that are inserted into the corresponding guide grooves are provided on both sides of the lower end of the upper mold base.

[0006] As a supplement to the technical solution described in this utility model, an equal-height sleeve is installed between the upper module and the upper mold base.

[0007] As a supplement to the technical solution described in this utility model, the lower module has two hole protrusions arranged side by side on its upper end.

[0008] As a supplement to the technical solution described in this utility model, a pressure strip is installed on both sides of the upper end of each lower slider on the lower mold base.

[0009] As a supplement to the technical solution described in this utility model, the elastic element is a gas spring.

[0010] As a supplement to the technical solution described in this utility model, a stop block is installed at the upper end of the lower mold base below the outer side of the lower slide block. A reset component is installed at the bottom of the lower slide block, with one end of the reset component resting on the stop block. The reset component is a gas spring. The reset component is fixedly installed at the bottom of the lower slide block by a fixing seat.

[0011] As a supplement to the technical solution described in this utility model, a stop block two is installed above the lower end of the upper mold base, located inside the upper slider. A reset component two is installed on the top of the upper slider, with one end of the reset component two resting against the stop block two. The reset component two is a gas spring. The reset component two is fixedly installed on the top of the upper slider by a fixing seat two.

[0012] Beneficial effects: This utility model relates to a reverse bending mold structure, which adopts an integrated reverse bending structure, and completes the reverse bending of the decorative panel edge in a single mold closing; when reverse bending is required, the two lower bending blocks open to assist the upper bending block in bending; after processing, the two lower bending blocks move closer together to facilitate demolding of the bent edge; the precise cooperation between the guide groove and the guide plate, and the limiting of the lower slider by the pressure strip, ensure the accuracy and stability of the mold during long-term operation and reduce the failure rate. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the upper and lower sliders of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the lower mold base described in this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the upper mold base described in this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the sliding block described in this utility model;

[0017] Figure 5 This is a schematic diagram of the lower slider at different angles according to this utility model;

[0018] Figure 6 This is a schematic diagram of the upper slider described in this utility model;

[0019] Figure 7 This is a schematic diagram of the structure of the processed product of this utility model.

[0020] Illustration: 1. Upper mold base, 2. Elastic component, 3. Upper module, 4. Upper slider, 5. Lower mold base, 6. Lower slider, 7. Lower module, 8. Guide plate, 9. Lower bending block, 10. Upper bending block, 11. Insertion part, 12. Lower wedge, 13. Support block, 14. Hole protrusion, 15. Guide groove, 16. Wear-resistant block, 17. Pressure strip, 18. Slide seat, 19. Taillight upper trim panel, 20. Reset component one, 21. Stop block one, 22. Fixing seat one, 23. Ramp, 24. Reset component two, 25. Stop block two, 26. Fixing seat two, 27. Mounting hole, 28. Bending edge. Detailed Implementation

[0021] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0022] The embodiments of this utility model relate to a reverse bending die structure, such as... Figure 1-7 As shown, the device includes an upper mold base 1 and a lower mold base 5. A lower module 7 is installed at the middle of the upper end of the lower mold base 5. On both sides of the lower module 7, there is an inclined sliding lower slider 6 and a reset component 20 for the lower slider 6. A lower bending block 9 is fixed to the upper end of the lower slider 6 near the lower module 7. A support block 13 is installed on the other side of the upper end of the lower slider 6. A lower inclined wedge 12 is installed at the middle of the upper end of the lower slider 6. An upper module 3 that can be raised and lowered is installed at the lower end of the upper mold base 1. An elastic element 2 is installed between the lower end of the upper mold base 1 and the upper module 3. A slide block 18 is installed on both sides of the lower end of the upper mold base 1 located on the upper module 3. An upper slide block 4 and a reset element 24 for the upper slide block 4 are installed in the slide block 18. An upper bending block 10 is installed on the lower part of the upper slide block 4 near the upper module 3. A slope 23 that cooperates with the lower wedge 12 is provided on the other side of the lower part of the upper slide block 4. An insertion part 11 that is inserted between the lower wedge 12 and the abutment block 13 is provided at the lower end of the upper mold base 1.

[0023] The lower mold base 5 has a guide groove 15 vertically formed on both sides of its upper end. Wear-resistant blocks 16 are installed on the inner walls of the guide groove 15. The upper mold base 1 has guide plates 8 inserted into the corresponding guide groove 15 on both sides of its lower end. The guide groove 15 and the guide plate 8 cooperate to ensure that the upper mold base 1 is accurately positioned when the mold is closed, and avoids left and right deviation.

[0024] A height equalizing sleeve is installed between the upper module 3 and the upper mold base 1; the height equalizing sleeve is used to prevent the upper module 3 from falling down, which is equivalent to playing a role in fixing the distance; 4-6 elastic elements 2 are evenly arranged along the length direction between the upper mold base 1 and the upper module 3. The elastic elements 2 are gas springs. At the same time, 4 height equalizing sleeves are installed. The height equalizing sleeves pass through the upper module 3 and are connected to the upper mold base 1, which not only ensures the verticality of the upper module 3 when it is raised and lowered, but also avoids the tilting of the upper module 3 caused by uneven force on the compression spring.

[0025] The lower module 7 has two hole protrusions 14 arranged side by side on its upper end. The hole protrusions 14 are adapted to the mounting holes 27 of the taillight upper trim panel 19. When the taillight upper trim panel 19 is placed, the hole protrusions 14 are inserted into the mounting holes 24 to achieve precise positioning of the taillight upper trim panel 19 with a positioning deviation of ≤0.05mm.

[0026] A pressure strip 17 is installed on both sides of the upper end of each lower slider 6 on the lower mold base 5. The pressure strips 17 on both sides ensure that the lower slider 6 slides only in the inclined direction and does not move up and down.

[0027] The lower mold base 5 is equipped with a stop block 21 located below the outer side of the lower slide block 6. The reset component 20 is installed at the bottom of the lower slide block 6, with one end of the reset component 20 pressing against the stop block 21. The reset component 20 is a gas spring. The reset component 20 is fixedly installed at the bottom of the lower slide block 6 by a fixing seat 22.

[0028] The upper mold base 1 is equipped with a stop block 25 located above the inner side of the upper slider 4. The reset component 24 is installed on the top of the upper slider 4, with one end of the reset component 24 resting on the stop block 25. The reset component 24 is a gas spring. The reset component 24 is fixedly installed on the top of the upper slider 4 by a fixing seat 26.

[0029] The taillight upper trim panel 19 of the blank part is placed on the lower module 7, and the taillight upper trim panel 19 is attached to the upper end surface of the lower module 7. The two hole protrusions 14 at the upper end of the lower module 7 are engaged with the two mounting holes 27 on the taillight upper trim panel 19 to achieve the positioning of the taillight upper trim panel 19 and complete the precise positioning of the taillight upper trim panel 19. At this time, the lower slider 6 is in the initial position under the support of the reset part 1 20, and the two lower bending blocks 9 are close to the lower module 7 and are in a retracted state. The upper slider 4 is in the initial position under the support of the reset part 2 24, and the upper bending block 10 is away from the upper module 3.

[0030] In the initial pressing stage of mold closing: the press drives the upper mold base 1 to move downward, and the guide plate 8 is inserted into the guide groove 15 of the lower mold base 5 to ensure the precise positioning of the upper mold base 1; the upper module 3 first contacts the upper end face of the taillight upper trim panel 19. As the upper mold base 1 continues to move downward, the elastic element 2 is compressed, and the upper module 3 is smoothly pressed against the taillight upper trim panel 19 under the guidance of the equal height sleeve.

[0031] In the mid-mold closing reverse bending stage: the upper mold base 1 continues to descend a certain distance, the ramp 23 of the upper slider 4 contacts and squeezes the ramp surface of the lower wedge 12, the ramp 23 applies a lateral thrust to the lower wedge 12, pushing the lower slider 6 to slide away from the lower module 7, the reset part 1 20 is compressed until the insertion part 11 of the upper mold base 1 is inserted between the lower wedge 12 and the abutment block 13, restricting the lateral displacement of the lower slider 6. At this time, the two lower bending blocks 9 are in the open state. Then the lower wedge 12 applies a lateral thrust to the ramp 23 in the opposite direction, pushing the upper slider 4 to slide towards the upper module 3. The upper bending block 10 at the lower part of the upper slider 4 cooperates with the lower bending block 9 to realize the reverse bending of the taillight upper trim panel 19 to form the required bent edge 28.

[0032] The elastic force of the second reset member 24 is greater than that of the first reset member 20. When the ramp 23 presses against the lower wedge 12, the upper slider 4 is pushed a short distance, while the lower slider 6 is continuously pushed until the rear insertion part 11 blocks the lower slider 6. Then the lower slider 6 remains stationary and continues to push the upper slider 4 in the opposite direction.

[0033] Mold opening and reset stage: The press drives the upper mold base 1 to move upward, and the upper slider 4 slides and resets away from the upper module 3 under the elastic force of the reset component 24, and the upper bending block 10 separates from the bending edge 28; at the same time, the lower slider 6 slides and resets towards the lower module 7 under the elastic force of the reset component 20, and the two lower bending blocks 9 close together and separate from the bending edge 28; the upper mold base 1 continues to move upward, and the upper module 3 separates from the workpiece under the elastic force of the elastic component 2, the guide plate 8 is pulled out from the guide groove 15, and finally the upper mold base 1 returns to the initial position, and the finished taillight upper trim panel 19 is taken out manually or by a robotic arm.

[0034] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0035] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0036] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0037] The foregoing has provided a detailed description of a reverse bending die structure provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A reverse bending die structure, comprising an upper die base (1) and a lower die base (5), characterized in that: The lower mold base (5) is equipped with a lower module (7) at the middle of its upper end. A sliding lower block (6) and a reset piece (20) for the lower block (6) are installed on both sides of the lower module (7) at the upper end of the lower mold base (5). A lower bending block (9) is fixed to the side of the upper end of the lower block (6) near the lower module (7). A support block (13) is installed on the other side of the upper end of the lower block (6). A lower inclined wedge (12) is installed in the middle of the upper end of the lower block (6). The upper mold base (1) is equipped with an upper module (3) that can be raised and lowered at its lower end. The lower end of the upper mold base (1) is connected to... An elastic element (2) is installed between the upper modules (3). A slide block (18) is installed on both sides of the upper module (3) at the lower end of the upper mold base (1). An upper slide block (4) and a reset element (24) for the upper slide block (4) are installed in the slide block (18). An upper bending block (10) is installed on the lower part of the upper slide block (4) near the upper module (3). A ramp (23) that cooperates with the lower wedge (12) is provided on the other side of the lower part of the upper slide block (4). A plug-in part (11) is provided at the lower end of the upper mold base (1) and inserted between the lower wedge (12) and the abutment block (13).

2. The reverse bending die structure according to claim 1, characterized in that: The lower mold base (5) has a guide groove (15) vertically opened on both sides of the upper end. Wear-resistant blocks (16) are installed on the inner walls of the guide groove (15). The upper mold base (1) has guide plates (8) inserted into the corresponding guide groove (15) on both sides of the lower end.

3. The reverse bending die structure according to claim 1, characterized in that: An equal-height sleeve is installed between the upper module (3) and the upper mold base (1).

4. The reverse bending die structure according to claim 1, characterized in that: The lower module (7) has two hole protrusions (14) arranged side by side on the upper end.

5. The reverse bending die structure according to claim 1, characterized in that: A pressure strip (17) is installed on both sides of the upper end of each lower slider (6) on the lower mold base (5).

6. The reverse bending die structure according to claim 1, characterized in that: The elastic element (2) is a gas spring.

7. The reverse bending die structure according to claim 1, characterized in that: The lower mold base (5) is equipped with a stop block (21) located below the outer side of the lower slide block (6). The reset component (20) is installed at the bottom of the lower slide block (6). One end of the reset component (20) rests on the stop block (21). The reset component (20) is a gas spring.

8. The reverse bending die structure according to claim 1, characterized in that: The upper mold base (1) is equipped with a stop block 2 (25) located above the inner side of the upper slider (4). The reset component 2 (24) is installed on the top of the upper slider (4). One end of the reset component 2 (24) rests on the stop block 2 (25). The reset component 2 (24) is a gas spring.

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