Sewing device for safety air bag

Abstract

The utility model provides a sewing device for a safety air bag, which relates to the technical field of safety air bag sewing and comprises a workbench, a transmission component is arranged on the workbench and comprises a turntable, a rotating frame is fixedly connected onto the turntable, a second rotating shaft is rotatably connected onto the rotating frame, and a second fixing block is fixedly connected onto the second rotating shaft. A first rotating shaft is fixedly connected to the second fixing block, a connecting block is rotatably connected to the end, away from the second fixing block, of the first rotating shaft, a pricking needle is fixedly connected to the bottom of the connecting block, a fixing frame is fixedly connected to the workbench, a transmission frame is slidably connected to the fixing frame on the workbench, and a compression part is fixedly connected to the bottom of the transmission frame; the counter-acting force of the material to the sewing needle is more stable, the sewing convenience is improved, and the problems that in the prior art, when a safety air bag with high strength is sewn, a pricking needle is likely to be broken, and sewing is not easy are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of airbag sewing, in particular to a sewing device for airbags. Background Art

[0002] Airbags need to be quickly inflated and deployed in emergency situations such as car collisions to protect passengers. Therefore, the connections of all its parts must be firm and reliable. The sewing device tightly stitches different materials and components of the airbag through precise sewing operations. For example, the main fabric of the airbag is stitched with key parts such as the air inlet and exhaust ports to ensure that gas does not leak from the stitching during the inflation process, maintaining the complete shape and pressure of the airbag.

[0003] Before inflation, the airbag needs to be kept in a sealed state to ensure that it can be quickly filled with gas when needed. The sewing process must ensure that the stitching has good airtightness and sealing performance to prevent gas leakage. Through precise stitch patterns, stitch traces, and pressure control, the sewing device can achieve high-quality stitching and meet the airtight and sealing requirements of the airbag.

[0004] Airbag materials usually have high strength and toughness. When some existing sewing devices face these high-strength materials, the sewing needles may have difficulty penetrating the materials smoothly, resulting in problems such as needle jamming and needle breakage during the sewing process, affecting production efficiency and product quality. When stitching high-strength materials, due to inaccurate pressure and tension control of the equipment, the materials may be damaged, such as leaving indentations on the material surface or having too large needle holes, which may reduce the strength and service life of the airbag materials. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art and provide a sewing device for airbags.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A sewing device for airbags, including a workbench, on which a transmission component is arranged.

[0007] The transmission component includes a turntable, on which a rotating frame is fixedly connected. A second rotating shaft is rotatably connected to the rotating frame. A second fixing block is fixedly connected to the second rotating shaft. A first rotating shaft is fixedly connected to the second fixing block. One end of the first rotating shaft away from the second fixing block is rotatably connected to a connecting block. A stabbing needle is fixedly connected to the bottom of the connecting block. A fixing frame is fixedly connected to the workbench. A transmission frame is slidably connected to the fixing frame on the workbench. A compression member is fixedly connected to the bottom of the transmission frame.

[0008] As a preferred embodiment, a fixing spring is fixedly connected to the transmission frame, and the fixing spring is fixedly connected within a fixing frame on the workbench.

[0009] The technical effect of adopting the above further solution is as follows: By providing a fixing spring, it is convenient to connect the transmission frame. During use, it can facilitate the reset of the transmission frame. When the motor drives the turntable to rotate, the second rotating shaft will push the transmission frame, causing it to move downward simultaneously and away from the compression member, pressing on the corners of the airbag, causing the airbag material to deform in the corner area. This deformation will change the fiber arrangement and molecular structure inside the material, making the originally closely arranged high-strength fibers become relatively loose, and the hardness and elastic modulus of the material change in the local area. In this way, even if a higher-strength airbag is replaced, the sewing needle can still sew.

[0010] As a preferred embodiment, a slide rail is fixedly connected to the workbench, and a sliding piece is slidably connected to the slide rail. The sliding piece is fixedly connected to a connecting block.

[0011] The technical effect of adopting the above further solution is as follows: By providing a sliding piece, during use, the sliding piece and the slide rail can provide a guiding function for the sliding of the connecting block.

[0012] As a preferred embodiment, a connecting plate is fixedly connected to the top of the slide rail, a rotating shaft is rotatably connected to the connecting plate, and a pulley is fixedly connected to the connecting plate.

[0013] The technical effect of adopting the above further solution is as follows: By providing a rotating shaft, it is convenient to place the sewing needle tube during use.

[0014] As a preferred embodiment, a motor is fixedly connected to the turntable, a fixing frame is fixedly connected to the end of the motor away from the turntable, the fixing frame on the motor is fixedly connected to the workbench, and a storage box and a storage compartment are fixedly connected to the workbench.

[0015] The technical effect of adopting the above further solution is as follows: By providing a storage box and a storage compartment, it is convenient to store processing tools.

[0016] As a preferred embodiment, a reset spring is fixedly connected to the workbench, and a sliding member is fixedly connected to the reset spring.

[0017] The technical effect of adopting the above further solution is that by fixing a sliding member on the return spring, the sliding member can be placed under the airbag during use, which facilitates the staff to pull the sliding member to realize the winding of the penetrated sewing thread. When the needle reciprocates up and down, its movement trajectory is not a completely straight line, which can cause the sewing thread to swing to a certain extent. This swing will change the position of the thread in space and achieve the winding of the thread.

[0018] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0019] In the present utility model, by squeezing the corners of the airbag, the properties of the material change, the internal fiber structure is rearranged and locally deformed, the overall hardness of the material decreases, and the resistance when the sewing needle penetrates decreases. Secondly, the extrusion adjusts the stress distribution of the material. When not extruded, stress concentration may exist at the corners, affecting the sewing quality. After extrusion, the stress is rebalanced, and the stress concentration phenomenon is alleviated, making the reaction force of the material on the sewing needle more stable. In addition, the equipment components cooperate with each other. For example, the slide rail and the sliding piece provide stable guidance for the movement of the sewing needle, avoiding sewing mistakes caused by movement deviation, improving the convenience of sewing, and solving the problems in the prior art that the sewing needle may break when sewing a relatively strong airbag and it is not easy to sew in the background technology. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of a sewing device for an airbag provided by the present utility model;

[0021] Figure 2 It is a schematic diagram of the position of the return spring of a sewing device for an airbag provided by the present utility model;

[0022] Figure 3 It is a schematic diagram of the connection relationship between the motor and the rotating frame of a sewing device for an airbag provided by the present utility model;

[0023] Figure 4 It is a schematic diagram of the connection relationship between the sliding piece and the slide rail of a sewing device for an airbag provided by the present utility model.

[0024] Legend Explanation:

[0025] 1. Workbench;

[0026] 2. Transmission assembly; 21. Turntable; 22. First rotating shaft; 23. Rotating frame; 24. Motor; 25. Connecting plate; 26. Second rotating shaft; 27. Second fixing block; 28. Connecting block; 29. Sewing needle; 210. Transmission frame; 211. Fixed spring; 212. Compression member;

[0027] 3. Slide rail; 31. Sliding piece; 32. Rotating shaft; 33. Return spring;

[0028] 4. Storage box; 41. Storage compartment. Detailed implementation mode

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] As Figures 1 to 4 shown, a sewing device for an airbag includes a workbench 1, and a transmission assembly 2 is arranged on the workbench 1;

[0031] The transmission assembly 2 includes a turntable 21, a rotating frame 23 is fixedly connected to the turntable 21, a second rotating shaft 26 is rotatably connected to the rotating frame 23, a second fixing block 27 is fixedly connected to the second rotating shaft 26, a first rotating shaft 22 is fixedly connected to the second fixing block 27, a connecting block 28 is rotatably connected to one end of the first rotating shaft 22 away from the second fixing block 27, a stabbing needle 29 is fixedly connected to the bottom of the connecting block 28, a fixing frame is fixedly connected to the workbench 1, and a transmission frame 210 is slidably connected to the fixing frame on the workbench 1, and a compression member 212 is fixedly connected to the bottom of the transmission frame 210;

[0032] In the present invention, by squeezing the corners of the airbag, the performance of the material changes, the internal fiber structure is rearranged and locally deformed, the overall hardness of the material decreases, and the resistance when the sewing needle penetrates decreases. Secondly, the extrusion adjusts the stress distribution of the material. When not extruded, stress concentration may exist at the corners, affecting the sewing quality. After extrusion, the stress is rebalanced, and the stress concentration phenomenon is alleviated, making the reaction force of the material on the sewing needle more stable. In addition, the equipment components cooperate with each other. For example, the slide rail 3 and the sliding piece 31 provide stable guidance for the movement of the stabbing needle 29, avoiding sewing mistakes caused by movement deviation, improving the convenience of sewing, and solving the problem that the stabbing needle 29 may break during sewing of an airbag with high sewing strength and it is not easy to sew in the prior art in the background art.

[0033] Furthermore, as Figures 1 to 4As shown in the figure, a fixed spring 211 is fixedly connected to the transmission frame 210. The fixed spring 211 is fixedly connected within a fixed frame on the workbench 1. By providing the fixed spring 211, it is convenient to connect the transmission frame 210. During use, it can facilitate the reset of the transmission frame 210. When the motor 24 drives the turntable 21 to rotate, the second rotating shaft 26 will push the transmission frame 210, causing it to move downward and away from the compression member 212 at the same time, pressing on the corners of the airbag, causing the airbag material to deform in the corner area. This deformation will change the fiber arrangement and molecular structure inside the material, making the originally closely arranged high-strength fibers become relatively loose, and the hardness and elastic modulus of the material change in the local area. In this way, even if a higher-strength airbag is replaced, the sewing needle can continue to sew;

[0034] A slide rail 3 is fixedly connected to the workbench 1. A sliding piece 31 is slidably connected to the slide rail 3. The sliding piece 31 is fixedly connected to the connecting block 28. By providing the sliding piece 31, during use, the sliding piece 31 and the slide rail 3 can provide a guiding function for the sliding of the connecting block 28;

[0035] A connecting plate 25 is fixedly connected to the top of the slide rail 3. A rotating shaft 32 is rotatably connected to the connecting plate 25. A pulley is fixedly connected to the connecting plate 25. By providing the rotating shaft 32, during use, it is convenient to place the sewing thread bobbin;

[0036] A motor 24 is fixedly connected to the turntable 21. The end of the motor 24 away from the turntable 21 is fixedly connected to a fixed frame. The fixed frame on the motor 24 is fixedly connected to the workbench 1. A storage box 4 and a storage compartment 41 are fixedly connected to the workbench 1. By providing the storage box 4 and the storage compartment 41, it is convenient to store processing tools;

[0037] In the above technical solution, there is also a problem of not proposing how to complete the winding of the sewing thread. For example, Figures 1 to 4 As shown in the figure, a reset spring 33 is fixedly connected to the workbench 1. A sliding member is fixedly connected to the reset spring 33. By fixing a sliding member on the reset spring 33, the sliding member can be placed under the airbag during use, which can facilitate the staff to pull the sliding member to realize the winding of the penetrated sewing needle and thread. When the needle reciprocates up and down, its movement trajectory is not a completely straight line, which can cause the sewing needle and thread to swing to a certain extent. This swing will change the position of the thread in space and realize the winding of the thread.

[0038] Working principle:

[0039] As Figures 1 - 4Shown as follows: First, the motor 24 starts, and its output shaft drives the turntable 21 to rotate. The rotating frame 23 fixedly connected to the turntable 21 also makes a circular motion accordingly, thereby driving the second rotating shaft 26 on the rotating frame 23 to move. The second fixed block 27 on the second rotating shaft 26, the first rotating shaft 22 and the connecting block 28 connected thereto form a linkage mechanism. When the second rotating shaft 26 moves to a specific position along with the rotating frame 23, it will squeeze and push the transmission frame 210. The bottom of the transmission frame 210 is fixedly connected with a compression member 212. When the transmission frame 210 slides in the fixed frame on the workbench 1 and moves downward and away from the compression member 212, the compression member 212 will exert pressure on the corners of the airbag, causing the airbag material to deform in the corner area. The fiber arrangement and molecular structure inside the material change, and the originally closely arranged high-strength fibers become relatively loose. The hardness and elastic modulus of the material change in the local area, creating conditions for subsequent sewing operations;

[0040] Meanwhile, as the turntable 21 continues to rotate, the sewing needle 29 moves up and down reciprocally for sewing operations. During this process, the slide rail 3 fixed on the workbench 1 and the sliding piece 31 on the connecting block 28 cooperate with each other. The sliding piece 31 slides on the slide rail 3, providing guidance for the movement of the sewing needle 29 to ensure the stability of its movement.

[0041] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes in other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A sewing device for an airbag, comprising a workbench (1), characterized in that, A transmission assembly (2) is provided on the workbench (1); The transmission assembly (2) includes a turntable (21), a rotating frame (23) is fixedly connected to the turntable (21), a second rotating shaft (26) is rotatably connected to the rotating frame (23), a second fixing block (27) is fixedly connected to the second rotating shaft (26), a first rotating shaft (22) is fixedly connected to the second fixing block (27), a connecting block (28) is rotatably connected to one end of the first rotating shaft (22) away from the second fixing block (27), a thimble (29) is fixedly connected to the bottom of the connecting block (28), a fixing frame is fixedly connected to the workbench (1), and a transmission frame (210) is slidably connected to the fixing frame on the workbench (1), and a compression member (212) is fixedly connected to the bottom of the transmission frame (210).

2. The sewing device for an airbag according to claim 1, characterized in that: A fixing spring (211) is fixedly connected to the transmission frame (210), and the fixing spring (211) is fixedly connected inside the fixing frame on the workbench (1).

3. The sewing device for an airbag according to claim 2, wherein: A slide rail (3) is fixedly connected to the workbench (1), a sliding piece (31) is slidably connected to the slide rail (3), and the sliding piece (31) is fixedly connected to the connecting block (28).

4. The sewing device for an airbag according to claim 3, wherein: A connecting plate (25) is fixedly connected to the top of the slide rail (3), a rotating shaft (32) is rotatably connected to the connecting plate (25), and a pulley is fixedly connected to the connecting plate (25).

5. The sewing device for an airbag according to claim 2, wherein: A motor (24) is fixedly connected to the turntable (21), a fixing frame is fixedly connected to one end of the motor (24) away from the turntable (21), the fixing frame of the motor (24) is fixedly connected to the workbench (1), and a storage box (4) and a storage compartment (41) are fixedly connected to the workbench (1).

6. The sewing device for an airbag according to claim 1, characterized in that: A return spring (33) is fixedly connected to the workbench (1), and a sliding member is fixedly connected to the return spring (33).

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