Side flanging structure suitable for automobile upper inner plate

Abstract

The utility model relates to the technical field of automobile machining equipment, in particular to a side flanging structure suitable for an upper inner plate of an automobile, which comprises a movable die holder and a static die holder opposite to the movable die holder, the movable die holder is used for pressing an inner plate body on the static die holder, and a bending assembly is arranged between the movable die holder and the static die holder. The bending assembly is used for bending the two ends of the inner plate body to form extending lugs and comprises a limiting module arranged on the static mold base, the inner plate body is placed on the limiting module, side pressing bases are arranged on the two sides of the static mold base in a sliding mode, and the side pressing bases are used for pressing the side edges of the inner plate body on the limiting module. The movable mold base is provided with a side pressing piece for driving the side pressing base to slide, bending bases are arranged at the two ends of the static mold base in a sliding mode, the bending bases are used for bending the ends of the inner plate body to form extension lugs, and the movable mold base is provided with bending pieces for driving the bending bases to move. The effect of improving the structural strength of the automobile inner plate is achieved.

Description

Technical Field

[0001] This application relates to the field of automotive processing equipment technology, and in particular to a side flange structure suitable for automotive upper inner panels. Background Technology

[0002] Automotive interior panels refer to the coverings inside a car body, primarily serving a protective and decorative purpose. Located inside the vehicle body and covering the vehicle structure, they effectively reduce noise and vibration generated during vehicle operation, improving driving comfort and safety.

[0003] The related technology discloses an automotive interior panel, reference Figure 1 The inner panel body 1 includes an inner panel body 1, and each end of the inner panel body 1 is provided with an extension ear 2, which is used to fix the inner panel body 1 to the vehicle body.

[0004] Since the car's inner panel plays a protective role, its structural strength is particularly important. Due to the design of the car body, the inner panel has a complex structural shape. The traditional method is to fix the lugs to the inner panel body by welding. However, due to the complex structure of the inner panel body and the different experience of the welders, the structural strength of the lugs on each inner panel body in the same batch of products may vary greatly, which greatly affects the overall safety strength of the car body and has shortcomings. Utility Model Content

[0005] In order to improve the structural strength between the inner panel body and the lug, this application provides a side flange structure suitable for automotive upper inner panels.

[0006] The side flange structure for automotive upper inner panels provided in this application adopts the following technical solution:

[0007] A side-flanging structure suitable for an inner panel of an automobile includes a moving mold base and a stationary mold base opposite to the moving mold base. The moving mold base is used to press the inner panel body onto the stationary mold base. A bending assembly is provided between the moving mold base and the stationary mold base. The bending assembly is used to bend the two ends of the inner panel body to form an extension. The bending assembly includes a limiting module disposed on the stationary mold base. The inner panel body is placed on the limiting module. Side pressure seats are slidably disposed on both sides of the stationary mold base. The side pressure seats are used to press the sides of the inner panel body onto the limiting module. A side pressure member is provided on the moving mold base to drive the side pressure seats to slide. A bending seat is slidably disposed on both ends of the stationary mold base. The bending seat is used to bend the ends of the inner panel body to form an extension. A bending member is provided on the moving mold base to drive the bending seat to move.

[0008] By adopting the above technical solution, the worker places the inner plate body on the limiting module on the stationary mold base. Then, the side pressing component presses the side of the inner plate body onto the limiting module through the side pressing seat. After that, the bending component bends the end of the inner plate body through the bending seat to form an ear, thereby making the ear integrally formed on the inner plate body. No welding is required in this process, and the pressure of the moving mold base on the stationary mold base is controllable. This makes the structural strength of the ear on the same type of inner plate body tend to be consistent, thereby improving the consistency of the overall safety strength of different vehicle bodies.

[0009] Optionally, the bending component includes a lug block and an end pressure block disposed on the moving mold base, a side bending block disposed on the stationary mold base, the bending seat slidingly engaging with the side bending block, a curved lug groove formed on the bending seat, the curved lug groove of the bending seat being used to press the end of the inner plate body onto the lug block, an intermediate block slidably disposed on the stationary mold base, the sliding direction of the intermediate block being perpendicular to the sliding direction of the bending seat, the bending seat being symmetrically arranged about the intermediate block, a transverse bending slope formed on the intermediate block, the bending seat being used to abut against and slide with the transverse bending slope of the intermediate block, an end pressure slope formed on the intermediate block, the end pressure slope being inclined away from the limiting module along the direction from the moving mold base to the stationary mold base, and an end drive slope formed on the end pressure block being used to abut against and slide with the end pressure slope.

[0010] By adopting the above technical solution, when the moving mold base presses against the stationary mold base, the end pressure block on the moving mold base abuts against the end pressure inclined surface on the middle block through the end drive inclined surface. The middle block slides and pushes the two bending seats to slide in opposite directions through the transverse bending inclined surface. During this process, the lug block will move synchronously with the moving mold base until the moving mold base stops moving. At this time, the curved lug groove on the bending seat presses the end of the inner plate body onto the lug block to form an extension lug, thereby making the extension lug integrally formed on the inner plate body, thereby improving the structural strength between the extension lug and the inner plate body.

[0011] Optionally, a first nitrogen spring is provided between the stationary mold base and the bending base, and a second nitrogen spring is provided between the intermediate block and the stationary mold base. When the transverse bend on the intermediate block abuts against the bending base, both the first and second nitrogen springs are compressed.

[0012] By adopting the above technical solution, when the end drive slope on the end pressure block abuts against and pushes the end pressure slope on the middle block, the middle block will push the bending seat to slide, thereby compressing both the first nitrogen spring and the second nitrogen spring. The middle block and the bending seat slide slowly, thereby reducing the possibility of sudden sliding of the middle block and the bending seat, which is beneficial to improving the bending quality of the lug on the inner plate body.

[0013] Optionally, a commingled end rod is provided on both sides of the end pressing block along the sliding direction of the intermediate block, and a commingled end block is provided on the commingled end rod. A commingled end groove is provided on both sides of the intermediate block along the sliding direction of the intermediate block. The inclination direction of the commingled end groove is parallel to the inclination direction of the end pressing inclined surface. The commingled end block and the commingled end groove correspond one-to-one, and the commingled end block and the commingled end groove slide in cooperation.

[0014] By adopting the above technical solution, as the end pressure block approaches the middle block, the compound end block on the compound end rod first abuts against the compound end inclined groove. As the end pressure block continues to descend, the compound end block pushes the middle block to slide through the compound end inclined groove until the end drive inclined surface on the end pressure block abuts against the end pressure inclined surface on the middle block. Then, as the end pressure block continues to descend, the middle block will continue to push the bending seat. During this process, both the first nitrogen spring and the second nitrogen spring are continuously compressed.

[0015] Optionally, the side pressure component includes a side pressure slide rail disposed on the stationary mold base, the side pressure seat is slidably disposed on the side pressure slide rail, a third nitrogen spring is supported between the side pressure seat and the stationary mold base, the side pressure seat is provided with a side pressure inclined surface, the side pressure inclined surface is inclined away from the limiting module along the direction from the moving mold base to the stationary mold base, the moving mold base is provided with a side pressure block, the side pressure block is provided with a side drive inclined surface for abutting and slidingly engaging with the side pressure inclined surface.

[0016] By adopting the above technical solution, during the process of the moving mold base pressing against the stationary mold base, the side drive slope on the side pressure block will gradually approach and abut against the side pressure slope on the side pressure seat. As the side pressure block continues to descend, under the guidance of the side pressure slide rail, the side pressure seat will press the side of the inner plate body against the limiting module, thereby reducing the possibility of the inner plate body sliding unexpectedly and improving the bending quality of the ear.

[0017] Optionally, a secondary side rod is provided on both sides of the side pressure block along the sliding direction of the side pressure seat, and a secondary side block is provided on the secondary side rod. A secondary side inclined groove is provided on both sides of the side pressure seat along the sliding direction of the side pressure seat. The inclination direction of the secondary side inclined groove is parallel to the inclination direction of the side pressure inclined surface. The secondary side block and the secondary side inclined groove correspond one-to-one, and the secondary side block and the secondary side inclined groove slide in cooperation.

[0018] By adopting the above technical solution, as the side pressure block approaches the side pressure seat, the secondary side block on the secondary side rod will approach and gradually abut against the secondary side inclined groove. As the side pressure block continues to descend, the side pressure seat will continuously approach the side of the inner plate body until the side drive inclined surface on the side pressure block abuts against the side pressure inclined surface on the side pressure seat. At this time, as the side pressure block continues to descend, the side pressure seat will gradually abut against the side of the inner plate body.

[0019] Optionally, wear-resistant blocks may be detachably provided on the end pressure inclined surface of the intermediate block, the end drive inclined surface of the end pressure block, the side pressure inclined surface of the side pressure seat, and the side drive inclined surface of the side pressure block.

[0020] By adopting the above technical solution, workers can extend the service life of the entire structure by regularly replacing the wear-resistant blocks.

[0021] Optionally, the moving mold base is provided with a demolding cylinder electrically connected to the control system, and the piston rod of the demolding cylinder is used to abut against the inner plate body.

[0022] By adopting the above technical solution, when the moving mold base is far away from the stationary mold base, the control system can activate the demolding cylinder to press the inner plate body onto the limit module, which helps to reduce the possibility of the inner plate body moving synchronously with the moving mold base and makes it easier for workers to take the inner plate body out later.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The worker places the inner plate body on the limiting module on the stationary mold base. Then, the side pressing component presses the side of the inner plate body onto the limiting module through the side pressing seat. After that, the bending component bends the end of the inner plate body through the bending seat to form an ear, so that the ear is integrally formed on the inner plate body. No welding is required in this process, and the pressure of the moving mold base on the stationary mold base is controllable. This makes the structural strength of the ear on the same type of inner plate body tend to be consistent, thereby improving the consistency of the overall safety strength of different vehicle bodies.

[0025] 2. When the moving mold base presses against the stationary mold base, the end pressure block on the moving mold base abuts against the end pressure inclined surface on the middle block through the end drive inclined surface. The middle block slides and pushes the two bending seats to slide in opposite directions through the transverse bending inclined surface. During this process, the lug block will move synchronously with the moving mold base until the moving mold base stops moving. At this time, the curved lug groove on the bending seat presses the end of the inner plate body onto the lug block to form an extension lug, thereby making the extension lug integrally formed on the inner plate body, thereby improving the structural strength between the extension lug and the inner plate body.

[0026] 3. As the end pressure block approaches the middle block, the end block on the end rod first abuts against the end groove. As the end pressure block continues to descend, the end block pushes the middle block to slide through the end groove until the end drive slope on the end pressure block abuts against the end pressure slope on the middle block. Then, as the end pressure block continues to descend, the middle block will continue to push the bending seat. During this process, both the first nitrogen spring and the second nitrogen spring are continuously compressed. Attached Figure Description

[0027] Figure 1 This is a structural diagram from the background technology.

[0028] Figure 2 This is a structural schematic diagram of an embodiment of this application.

[0029] Figure 3 This is a structural schematic diagram illustrating the separation of the moving mold base and the stationary mold base in the embodiments of this application.

[0030] Figure 4 This is a structural schematic diagram illustrating the positional relationship between the static mold base, the side pressure base, and the bending base in the embodiments of this application.

[0031] Figure 5 This is a structural schematic diagram in the embodiments of this application used to illustrate the positional relationship between the third nitrogen spring, the first nitrogen spring, and the second nitrogen spring.

[0032] Figure 6 This is a structural schematic diagram illustrating the positional relationship between the moving mold base, the end pressure block, and the side pressure block in the embodiments of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Inner plate body; 2. Lug; 3. Moving mold base; 4. Stationary mold base; 5. Bending assembly; 51. Limiting module; 52. Side pressure seat; 53. Side pressure component; 531. Side pressure slide rail; 532. Third nitrogen spring; 533. Side pressure ramp; 534. Side pressure block; 535. Side drive ramp; 54. Bending seat; 55. Bending component; 551. Lug block; 552. 553. End pressure block; 554. Side bending block; 555. Curved ear arc groove; 556. Middle block; 557. Horizontal bending slope; 558. End pressure slope; 559. End drive slope; 6. First nitrogen spring; 7. Second nitrogen spring; 8. Compound end rod; 9. Compound end block; 10. Compound end inclined groove; 11. Compound side rod; 12. Compound side block; 13. Compound side inclined groove; 14. Wear-resistant block; 15. Demolding cylinder. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 2-6 This application will be described in further detail.

[0035] This application discloses a side-flanged structure suitable for the inner panel of an automobile.

[0036] Reference Figure 2 A side flange structure suitable for the inner panel of an automobile includes a moving mold base 3 and a stationary mold base 4 opposite to the moving mold base 3. The moving mold base 3 is located directly above the stationary mold base 4. The moving mold base 3 is used to press the inner panel body 1 onto the stationary mold base 4. A bending assembly 5 is arranged between the moving mold base 3 and the stationary mold base 4. The bending assembly 5 is used to bend the two ends of the inner panel body 1 to form an ear 2.

[0037] Reference Figure 3The bending assembly 5 includes a limiting module 51 bolted to the stationary mold base 4, the inner plate body 1 is placed on the limiting module 51, and a demolding cylinder 15 electrically connected to the control system is bolted to the moving mold base 3. The piston rod of the demolding cylinder 15 is used to abut against the inner plate body 1.

[0038] Reference Figure 3 and Figure 4 Both sides of the stationary mold base 4 are slidably arranged with side pressure seats 52. The side pressure seats 52 are used to press the side of the inner plate body 1 onto the limiting module 51. The moving mold base 3 is arranged with side pressure components 53 that drive the side pressure seats 52 to slide.

[0039] Reference Figure 4 and Figure 5 The side pressure component 53 includes a side pressure slide rail 531 bolted to the stationary mold base 4, a side pressure seat 52 slidably connected to the side pressure slide rail 531, and a third nitrogen spring 532 supporting the side pressure seat 52 and the stationary mold base 4.

[0040] Reference Figure 3 and Figure 6 The side pressure seat 52 is provided with a side pressure inclined surface 533. The side pressure inclined surface 533 is inclined away from the limiting module 51 along the direction from the moving mold seat 3 to the stationary mold seat 4. A side pressure block 534 is bolted to the moving mold seat 3. A side drive inclined surface 535 is provided on the side pressure block 534 for abutting and slidingly engaging with the side pressure inclined surface 533. Wear-resistant blocks 14 are bolted to both the side pressure inclined surface 533 on the side pressure seat 52 and the side drive inclined surface 535 on the side pressure block 534.

[0041] Reference Figure 2 , Figure 4 and Figure 6 A secondary side rod 11 is bolted to both sides of the side pressure block 534 along the sliding direction of the side pressure seat 52. A secondary side block 12 is integrally formed on the secondary side rod 11. A secondary side inclined groove 13 is opened on both sides of the side pressure seat 52 along the sliding direction of the side pressure seat 52. The secondary side inclined groove 13 is connected to the top of the side pressure seat 52. The inclination direction of the secondary side inclined groove 13 is parallel to the inclination direction of the side pressure inclined surface 533. The secondary side block 12 and the secondary side inclined groove 13 correspond one-to-one and slide with each other.

[0042] The worker places the inner plate body 1 on the limiting module 51 on the stationary mold base 4. When the moving mold base 3 presses against the stationary mold base 4, the moving mold base 3 drives the secondary side rod 11 to descend synchronously through the side pressure block 534. The secondary side block 12 on the secondary side rod 11 will approach and gradually abut against the secondary side inclined groove 13. As the side pressure block 534 continues to descend, the secondary side block 12 on the secondary side rod 11 will push the secondary pressure seat 52 to continuously approach the side of the inner plate body 1 through the secondary side inclined groove 13 until the side driving inclined surface 535 on the side pressure block 534 abuts against the side pressure inclined surface 533 on the side pressure seat 52.

[0043] As the side pressure block 534 continues to descend, the side pressure slope 533 on the side pressure seat 52 will slide relative to the side drive slope 535 on the side pressure block 534. The side pressure seat 52 will continue to approach the side of the inner plate body 1 until the side pressure seat 52 abuts against the side of the inner plate body 1. At this time, the moving mold seat 3 stops descending. During this process, the third nitrogen spring 532 is continuously compressed.

[0044] Reference Figure 4 and Figure 6 A bending seat 54 is slidably connected to both ends of the stationary mold base 4 and the limiting module 51. A first nitrogen spring 6 is supported between the stationary mold base 4 and the bending seat 54. The bending seat 54 is used to bend the end of the inner plate body 1 to form an ear 2. A bending part 55 that drives the bending seat 54 to move is arranged on the moving mold base 3.

[0045] Reference Figure 4 and Figure 6 The bending component 55 includes a lug block 551 and an end pressure block 552 bolted to the moving mold base 3. A side bending block 553 is bolted to the stationary mold base 4. The bending seat 54 is slidably engaged with the side bending block 553. A curved lug groove 554 is provided on the bending seat 54. The curved lug groove 554 of the bending seat 54 is used to press the end of the inner plate body 1 onto the lug block 551.

[0046] Reference Figure 3 and Figure 4 An intermediate block 555 is slidably connected to both ends of the stationary mold base 4 and the limiting module 51. A second nitrogen spring 7 is supported between the intermediate block 555 and the stationary mold base 4. The sliding direction of the intermediate block 555 is perpendicular to the sliding direction of the bending seat 54. The bending seat 54 on the same end of the limiting module 51 is symmetrically arranged about the intermediate block 555. A horizontal bend 556 is opened on the intermediate block 555.

[0047] Reference Figure 3 , Figure 4 and Figure 6 The bending seat 54 is used to abut and slide with the horizontal bending slope 556 of the intermediate block 555. The intermediate block 555 is provided with an end pressing slope 557. The end pressing slope 557 is inclined away from the limiting module 51 along the direction from the moving mold seat 3 to the stationary mold seat 4. The end pressing block 552 is provided with an end driving slope 558 for abutting and sliding with the end pressing slope 557.

[0048] Reference Figure 3 and Figure 5 Wear-resistant blocks 14 are also bolted to the end pressure slope 557 of the intermediate block 555 and the end drive slope 558 of the end pressure block 552. When the transverse bending slope 556 on the intermediate block 555 abuts against the bending seat 54, the first nitrogen spring 6 and the second nitrogen spring 7 are both compressed.

[0049] Reference Figure 3 and Figure 6 A compound end rod 8 is bolted to both sides of the end pressure block 552 along the sliding direction of the middle block 555. A compound end block 9 is integrally formed on the compound end rod 8. A compound end inclined groove 10 is opened on both sides of the middle block 555 along the sliding direction of the middle block 555. The inclination direction of the compound end inclined groove 10 is parallel to the inclination direction of the end pressure inclined surface 557. The compound end block 9 and the compound end inclined groove 10 correspond one-to-one and slide together.

[0050] During the process of the moving mold base 3 pressing against the stationary mold base 4, the moving mold base 3 drives the lug block 551 and the end pressure block 552 to descend synchronously. The end pressure block 552 will drive the end rod 8 to descend synchronously until the end block 9 on the end rod 8 abuts against the end groove 10. As the moving mold base 3 continues to descend, the end rod 8, through the cooperation between the end block 9 and the end groove 10, makes the middle block 555 approach the end of the inner plate body 1. The middle block 555 will push the two bending seats 54 to slide in opposite directions through the horizontal bending slope 556.

[0051] The curved groove 554 on the bending seat 54 presses the end of the inner plate body 1 against the abutment block 551 until the end drive slope 558 on the end pressure block 552 abuts against the end pressure slope 557 on the middle block 555. As the moving mold seat 3 continues to descend, the middle block 555 will continue to push the bending seat 54, and the bending seat 54 will continue to squeeze the end of the inner plate body 1 until the moving mold seat 3 stops descending. At this time, the curved groove 554 on the bending seat 54 presses the end of the inner plate body 1 onto the abutment block 551 to form an extension 2. During this process, the first nitrogen spring 6 and the second nitrogen spring 7 are continuously compressed.

[0052] The implementation principle of a side-flanged structure for an inner panel of an automobile is as follows: The worker places the inner panel body 1 on the limiting module 51 on the stationary mold base 4. When the moving mold base 3 presses against the stationary mold base 4, the moving mold base 3 drives the secondary side rod 11 to descend synchronously through the side pressure block 534. The secondary side block 12 on the secondary side rod 11 will approach and gradually abut against the secondary side inclined groove 13. As the side pressure block 534 continues to descend, the secondary side block 12 on the secondary side rod 11 will push the side pressure seat 52 to continuously approach the side of the inner panel body 1 through the secondary side inclined groove 13 until the side driving inclined surface 535 on the side pressure block 534 abuts against the side pressure inclined surface 533 on the side pressure seat 52.

[0053] As the side pressure block 534 continues to descend, the side pressure slope 533 on the side pressure seat 52 will slide relative to the side drive slope 535 on the side pressure block 534. The side pressure seat 52 will continue to approach the side of the inner plate body 1 until the side pressure seat 52 abuts against the side of the inner plate body 1. At this time, the moving mold seat 3 stops descending. During this process, the third nitrogen spring 532 is continuously compressed.

[0054] During the process of the moving mold base 3 pressing against the stationary mold base 4, the moving mold base 3 drives the lug block 551 and the end pressure block 552 to descend synchronously. The end pressure block 552 will drive the end rod 8 to descend synchronously until the end block 9 on the end rod 8 abuts against the end groove 10. As the moving mold base 3 continues to descend, the end rod 8, through the cooperation between the end block 9 and the end groove 10, makes the middle block 555 approach the end of the inner plate body 1. The middle block 555 will push the two bending seats 54 to slide in opposite directions through the horizontal bending slope 556.

[0055] The curved groove 554 on the bending seat 54 presses the end of the inner plate body 1 against the abutment block 551 until the end drive slope 558 on the end pressure block 552 abuts against the end pressure slope 557 on the middle block 555. As the moving mold seat 3 continues to descend, the middle block 555 will continue to push the bending seat 54, and the bending seat 54 will continue to squeeze the end of the inner plate body 1 until the moving mold seat 3 stops descending. At this time, the curved groove 554 on the bending seat 54 presses the end of the inner plate body 1 onto the abutment block 551 to form an extension 2. During this process, the first nitrogen spring 6 and the second nitrogen spring 7 are continuously compressed.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A side flange structure suitable for the inner panel of an automobile, characterized in that: The system includes a moving mold base (3) and a stationary mold base (4) opposite to the moving mold base (3). The moving mold base (3) is used to press the inner plate body (1) onto the stationary mold base (4). A bending assembly (5) is provided between the moving mold base (3) and the stationary mold base (4). The bending assembly (5) is used to bend the two ends of the inner plate body (1) to form lugs (2). The bending assembly (5) includes a limiting module (51) provided on the stationary mold base (4). The inner plate body (1) is placed on the limiting module (51). Side pressure seats (52) are slidably provided on both sides of the seat (4). The side pressure seats (52) are used to press the side of the inner plate body (1) onto the limiting module (51). The moving mold seat (3) is provided with a side pressure member (53) that drives the side pressure seats (52) to slide. The two ends of the stationary mold seat (4) are slidably provided with bending seats (54). The bending seats (54) are used to bend the end of the inner plate body (1) to form an ear (2). The moving mold seat (3) is provided with a bending member (55) that drives the bending seats (54) to move.

2. The side flange structure suitable for the inner panel of an automobile according to claim 1, characterized in that: The bending component (55) includes an abutment block (551) and an end pressing block (552) disposed on the moving mold base (3). A side bending block (553) is disposed on the stationary mold base (4). The bending seat (54) is slidably engaged with the side bending block (553). A curved groove (554) is provided on the bending seat (54). The curved groove (554) of the bending seat (54) is used to press the end of the inner plate body (1) onto the abutment block (551). An intermediate block (555) is slidably disposed on the stationary mold base (4). The sliding direction of the intermediate block (555) is perpendicular to the sliding direction of the bending seat (54). In the direction of shifting, the bending seat (54) is symmetrically arranged about the intermediate block (555). The intermediate block (555) has a horizontal bending slope (556). The bending seat (54) is used to abut against and slide with the horizontal bending slope (556) of the intermediate block (555). The intermediate block (555) has an end pressure slope (557). The end pressure slope (557) is inclined away from the limiting module (51) along the direction from the moving mold seat (3) to the stationary mold seat (4). The end pressure block (552) has an end drive slope (558) for abutting against and sliding with the end pressure slope (557).

3. The side flange structure suitable for the inner panel of an automobile according to claim 2, characterized in that: A first nitrogen spring (6) supports the stationary mold base (4) and the bending base (54), and a second nitrogen spring (7) supports the intermediate block (555) and the stationary mold base (4). When the horizontal bend (556) on the intermediate block (555) abuts against the bending base (54), both the first nitrogen spring (6) and the second nitrogen spring (7) are compressed.

4. A side flange structure suitable for the inner panel of an automobile according to claim 2, characterized in that: The end pressure block (552) is provided with a double end rod (8) on both sides along the sliding direction of the intermediate block (555). The double end rod (8) is provided with a double end block (9). The intermediate block (555) is provided with a double end groove (10) on both sides along the sliding direction of the intermediate block (555). The inclination direction of the double end groove (10) is parallel to the inclination direction of the end pressure inclined surface (557). The double end block (9) and the double end groove (10) correspond one-to-one. The double end block (9) and the double end groove (10) slide together.

5. A side flange structure suitable for automotive upper inner panels according to claim 2, characterized in that: The side pressure component (53) includes a side pressure slide rail (531) disposed on the stationary mold base (4), the side pressure seat (52) is slidably disposed on the side pressure slide rail (531), a third nitrogen spring (532) is supported between the side pressure seat (52) and the stationary mold base (4), a side pressure inclined surface (533) is provided on the side pressure seat (52), the side pressure inclined surface (533) is inclined away from the limiting module (51) along the direction from the moving mold base (3) to the stationary mold base (4), a side pressure block (534) is provided on the moving mold base (3), and a side drive inclined surface (535) is provided on the side pressure block (534) for abutting and slidingly engaging with the side pressure inclined surface (533).

6. A side flange structure suitable for automotive upper inner panels according to claim 5, characterized in that: The side pressure block (534) is provided with a secondary side rod (11) on both sides along the sliding direction of the side pressure seat (52). The secondary side rod (11) is provided with a secondary side block (12). The side pressure seat (52) is provided with a secondary side groove (13) on both sides along the sliding direction of the side pressure seat (52). The inclination direction of the secondary side groove (13) is parallel to the inclination direction of the side pressure inclined surface (533). The secondary side block (12) corresponds to the secondary side groove (13) one by one. The secondary side block (12) and the secondary side groove (13) slide together.

7. A side flange structure suitable for automotive upper inner panels according to claim 6, characterized in that: Wear-resistant blocks (14) can be detachably provided on the end pressure slope (557) of the intermediate block (555), the end drive slope (558) of the end pressure block (552), the side pressure slope (533) of the side pressure seat (52), and the side drive slope (535) of the side pressure block (534).

8. A side flange structure suitable for automotive upper inner panels according to claim 7, characterized in that: The moving mold base (3) is provided with a demolding cylinder (15) electrically connected to the control system. The piston rod of the demolding cylinder (15) is used to abut against the inner plate body (1).

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