Press fitting die for automobile safety air bag assembly box

By using a worm gear system driven by an electric motor in conjunction with a hydraulic cylinder, the lower mold of the automotive airbag assembly box is stably clamped, solving the problem of unstable fixing of existing molds and improving manufacturing precision and product quality.

CN224255844UActive Publication Date: 2026-05-19YIXING RUIHUA AUTO PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YIXING RUIHUA AUTO PARTS CO LTD
Filing Date
2025-04-23
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

The existing automotive airbag assembly box pressing mold has an unstable lower mold fixation, resulting in inconsistent assembly accuracy and affecting product quality.

Method used

The worm gear system driven by an electric motor works in conjunction with a hydraulic cylinder, and through multiple clamping blocks and spring structures, it achieves stable fixation of the lower mold, ensuring precise alignment of the upper and lower molds.

Benefits of technology

This improved the manufacturing stability of automotive airbag assembly boxes, avoided inconsistencies in product dimensions, and ensured the quality of subsequent processes and the final product.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224255844U_ABST
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Abstract

The utility model discloses a press-fitting die of an automobile safety air bag assembly box, which belongs to the field of press-fitting dies and comprises a shell, a lower die movably inserted into the inner side of the shell, a first plate fixedly connected to the inner side of the shell, two second blocks slidably connected to the top of the first plate, and third blocks slidably connected to the inner sides of the two second blocks. And the other ends of the two third blocks movably abut against two fourth blocks correspondingly, the other ends of the two fourth blocks movably abut against the two sides of the lower die correspondingly, the tops of the two second blocks are fixedly connected with two fixing blocks correspondingly, and the same rotating shaft is fixedly connected between the two fixing blocks located on the same side. The lower die is reasonable in structural design, the motor, the screw rod, the first block, the second block and the worm gear are matched, so that the lower die can be clamped at multiple positions, the lower die can be kept more stable when an automobile safety air bag assembly box is manufactured, and the production efficiency is improved. Therefore, the influence of inconsistent product sizes on subsequent procedures and final product quality is avoided.
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Description

Technical Field

[0001] This utility model relates to the field of press-fit molds, and in particular to a press-fit mold for an automotive airbag assembly box. Background Technology

[0002] With the rapid development of the automotive industry, vehicle safety performance is receiving increasing attention. Airbags, as an important passive safety device, play a crucial role in the event of a collision. The airbag assembly box is a key component connecting the airbag to other parts of the vehicle, and its quality directly affects the proper deployment and protective effect of the airbag.

[0003] Existing automotive airbag assembly box pressing molds often have simple lower mold fixing mechanisms, which can easily lead to unstable lower mold fixing and affect the assembly accuracy of the airbag assembly box. This can result in inconsistent product dimensions, affecting subsequent processes and the final product quality. Therefore, we propose a new automotive airbag assembly box pressing mold to solve this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a pressing mold for an automotive airbag assembly box, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pressing mold for an automotive airbag assembly box includes: an outer shell; a lower mold movably inserted into the inner side of the outer shell; a first plate fixedly connected to the inner side of the outer shell; two second blocks slidably connected to the top of the first plate; a third block slidably connected to the inner side of each of the two second blocks; two fourth blocks movably abutting at the other ends of each of the two third blocks; the other ends of each of the four fourth blocks movably abutting at both sides of the lower mold; two fixing blocks fixedly connected to the top of each of the two second blocks; a common rotating shaft fixedly connected between two fixing blocks on the same side; and the inner sides of each of the four fourth blocks rotatably connected to the outer side of the corresponding rotating shaft. A bracket is fixedly connected to the top of the outer shell; grooves are formed on the inner walls of both sides of the bracket; connecting strips are slidably connected to the inner sides of each of the two grooves; and an upper mold is fixedly connected between the two connecting strips.

[0007] Preferably, a motor is fixedly connected to the inner wall of one side of the outer casing, a screw is fixedly connected to the output end of the motor, a worm is fixedly connected to the outer side of the screw, a worm wheel meshes with the outer side of the worm, a first roller is fixedly connected to the inner side of the worm wheel, and two first blocks are threadedly connected to the outer side of the first roller, with the tops of the two first blocks fixedly connected to the bottoms of the corresponding second blocks, and two external threads with opposite directions are provided on the outer side of the first roller, and the outer sides of the first roller and the screw are rotatably connected to the inner side of the outer casing.

[0008] Preferably, the inner side of the first plate has two sliding holes that are adapted to the first block, and the outer sides of the two first blocks are slidably connected to the inner side of the corresponding sliding holes. The top inner wall of the bracket has two hydraulic cylinders fixedly connected, and the output ends of the two hydraulic cylinders are fixedly connected to the same plate. The plate is threadedly connected to the upper mold by multiple bolts.

[0009] Preferably, one side of each of the two second blocks is fixedly connected to a first spring and a second spring, the other end of each of the two first springs is fixedly connected to one side of the corresponding third block, and one end of each of the two fourth blocks is fixedly connected to one end of the corresponding second spring.

[0010] Preferably, a controller is fixedly connected to one side of the housing, and the controller is electrically connected to the hydraulic cylinder and the motor.

[0011] Preferably, the bottom of the outer casing is fixedly connected to multiple bases.

[0012] In this utility model, the pressing mold for an automotive airbag assembly box is installed inside the outer shell. The motor is started, which causes the screw to rotate. This causes the worm gear to rotate, and then the worm wheel drives the first roller to rotate. This causes the first block to drive the second block to move horizontally and begin to clamp the two sides of the lower mold. This causes the third block to come into contact with the lower mold and begin to move horizontally in the opposite direction to the second block, causing the first spring to extend.

[0013] In this utility model, the pressing mold for an automotive airbag assembly box moves with block number three and abuts against block number four, causing block number four to start rotating. After block number two clamps the lower mold, the other end of block number four also clamps the lower mold. Further, the material of the automotive airbag assembly box is placed on top of the lower mold, and the upper mold is fixed with multiple bolts. Through the cooperation between the upper mold and the lower mold, the manufacturing of the automotive airbag assembly box begins.

[0014] This utility model has a reasonable structural design. Through the cooperation between the motor, screw, block one, block two and worm gear, the lower mold can be clamped at multiple positions. This makes the lower mold more stable when manufacturing automotive airbag assembly boxes, thereby avoiding product size inconsistencies that could affect subsequent processes and the quality of the final product. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a pressing mold for an automotive airbag assembly box proposed in this utility model;

[0016] Figure 2 This is a cross-sectional structural schematic diagram of a pressing mold for an automotive airbag assembly box proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the worm gear and worm structure proposed in this utility model.

[0018] In the diagram: 1. Outer shell; 2. Plate No. 1; 3. Roller No. 1; 4. Block No. 1; 5. Block No. 2; 6. Block No. 3; 7. Block No. 4; 8. Fixing block; 9. Lower mold; 10. Upper mold; 11. Hydraulic cylinder; 12. Motor; 13. Screw; 14. Worm gear; 15. Worm wheel; 16. Controller. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-3 A pressing mold for an automotive airbag assembly box includes: an outer shell 1; a lower mold 9 is movably inserted into the inner side of the outer shell 1; a first plate 2 is fixedly connected to the inner side of the outer shell 1; two second blocks 5 are slidably connected to the top of the first plate 2; a third block 6 is slidably connected to the inner side of each of the two second blocks 5; two fourth blocks 7 are movably abutted against the other ends of each of the two third blocks 6; the other ends of each of the two fourth blocks 7 are movably abutted against the sides of the lower mold 9; two fixing blocks 8 are fixedly connected to the top of each of the two second blocks 5; a common rotating shaft is fixedly connected between the two fixing blocks 8 located on the same side; the inner sides of each of the two fourth blocks 7 are rotatably connected to the outer side of the corresponding rotating shaft; a bracket is fixedly connected to the top of the outer shell 1; grooves are provided on the inner walls of both sides of the bracket; connecting strips are slidably connected to the inner sides of the two grooves; and an upper mold 10 is fixedly connected between the two connecting strips.

[0021] In this embodiment, a motor 12 is fixedly connected to the inner wall of one side of the outer shell 1. A screw 13 is fixedly connected to the output end of the motor 12, and a worm gear 14 is fixedly connected to the outer side of the screw 13. A worm wheel 15 meshes with the outer side of the worm gear 14. A first roller 3 is fixedly connected to the inner side of the worm wheel 15. Two first blocks 4 are threadedly connected to the outer side of the first roller 3. The tops of the two first blocks 4 are fixedly connected to the bottoms of the corresponding second blocks 5. Two external threads with opposite directions are provided on the outer side of the first roller 3. The outer sides of the first roller 3 and the screw 13 are rotatably connected to the inner side of the outer shell 1. Two sliding holes adapted to the first blocks 4 are opened on the inner side of the first plate 2. The outer sides of the two first blocks 4 are slidably connected to the inner side of the corresponding sliding holes. Two hydraulic cylinders 11 are fixedly connected to the inner wall of the top of the bracket. The output ends of the two hydraulic cylinders 11 are fixedly connected to the same plate. The plate is threadedly connected to the upper mold 10 by multiple bolts, which facilitates the installation of the upper mold 10.

[0022] In this embodiment, springs No. 1 and No. 2 are fixedly connected to one side of each of the two No. 2 blocks 5. The other ends of the two No. 1 springs are fixedly connected to one side of the corresponding No. 3 block 6. One end of each of the two No. 4 blocks 7 is fixedly connected to one end of the corresponding No. 2 spring. A controller 16 is fixedly connected to one side of the outer shell 1. The controller 16 is electrically connected to the hydraulic cylinder 11 and the motor 12. Multiple bases are fixedly connected to the bottom of the outer shell 1, which can support the entire device.

[0023] In this embodiment, during use, the lower mold 9 is installed inside the outer casing 1, and the motor 12 is started, causing the screw 13 to rotate. This causes the worm gear 14 to rotate, and then the worm wheel 15 drives the first roller 3 to rotate. This causes the first block 4 to drive the second block 5 to move horizontally and begin to clamp the two sides of the lower mold 9. This causes the third block 6 to come into contact with the lower mold 9 and begin to move horizontally in the opposite direction to the second block 5, causing the first spring to extend. At this time, as the third block 6 moves and abuts against the fourth block 7, the fourth block 7 begins to rotate. After the second block 5 clamps the lower mold 9, the other end of the fourth block 7 also clamps the lower mold 9. Further, the material of the car airbag assembly box is placed on top of the lower mold 9, and the upper mold 10 is fixed with multiple bolts. Through the cooperation between the upper mold 10 and the lower mold 9, the manufacturing of the car airbag assembly box begins.

[0024] The above provides a detailed description of the pressing mold for an automotive airbag assembly box provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A pressing mold for an automotive airbag assembly box, characterized in that, include: The outer shell (1) has a lower mold (9) movably inserted into its inner side, and a first plate (2) is fixedly connected to the inner side of the outer shell (1). Two second blocks (5) are slidably connected to the top of the first plate (2). Three blocks (6) are slidably connected to the inner side of each of the two second blocks (5). Two fourth blocks (7) are movably abutted to the other end of each of the two third blocks (6). The other ends of each of the two fourth blocks (7) are movably abutted to both sides of the lower mold (9). Two fixed blocks (8) are fixedly connected to the top of each of the two second blocks (5). The same rotating shaft is fixedly connected between the two fixed blocks (8) located on the same side. The inner sides of each of the two fourth blocks (7) are rotatably connected to the outer side of the corresponding rotating shaft. A bracket is fixedly connected to the top of the outer shell (1). Slide grooves are opened on the inner walls of both sides of the bracket. Connecting strips are slidably connected to the inner sides of each of the two slide grooves. The same upper mold (10) is fixedly connected between the two connecting strips.

2. The pressing mold for an automotive airbag assembly box according to claim 1, characterized in that, A motor (12) is fixedly connected to the inner wall of one side of the outer shell (1). A screw (13) is fixedly connected to the output end of the motor (12). A worm (14) is fixedly connected to the outside of the screw (13). A worm wheel (15) meshes with the outside of the worm (14). A first roller (3) is fixedly connected to the inside of the worm wheel (15). Two first blocks (4) are threadedly connected to the outside of the first roller (3). The tops of the two first blocks (4) are fixedly connected to the bottom of the corresponding second blocks (5). Two external threads with opposite directions are provided on the outside of the first roller (3). The outside of the first roller (3) and the screw (13) are rotatably connected to the inside of the outer shell (1).

3. The pressing mold for an automotive airbag assembly box according to claim 1, characterized in that, The inner side of the first plate (2) has two sliding holes that are compatible with the first block (4). The outer sides of the two first blocks (4) are slidably connected to the inner side of the corresponding sliding holes. The top inner wall of the bracket is fixedly connected to two hydraulic cylinders (11). The output ends of the two hydraulic cylinders (11) are fixedly connected to the same plate. The plate is threadedly connected to the upper mold (10) by multiple bolts.

4. The pressing mold for an automotive airbag assembly box according to claim 1, characterized in that, One of the two blocks (5) is fixedly connected to one side of the first spring and the second spring. The other end of the two first springs is fixedly connected to one side of the corresponding block (6), and one end of the two blocks (7) is fixedly connected to one end of the corresponding second spring.

5. The pressing mold for an automotive airbag assembly box according to claim 1, characterized in that, A controller (16) is fixedly connected to one side of the outer casing (1), and the controller (16) is electrically connected to the hydraulic cylinder (11) and the motor (12).

6. The pressing mold for an automotive airbag assembly box according to claim 1, characterized in that, The bottom of the outer shell (1) is fixedly connected to multiple bases.