Multi-layer cutting device for air bag

Abstract

The utility model discloses a multi-layer cutting device for an air bag. The multi-layer cutting device comprises a workbench, a lower pressing roller, a driving mechanism and a laser tube, lower pressing rollers are arranged above the two sides of the workbench, the axial direction of the lower pressing rollers is arranged in the conveying direction of cloth, the lower pressing rollers are rotatably arranged, and the ends of the lower pressing rollers are connected with a power source. The driving mechanism comprises an air cylinder and a connecting rod, the air cylinder is fixedly arranged above the workbench and connected with the connecting rod, and the connecting rod is connected with the lower pressing roller and a power source of the lower pressing roller; and the laser tube is movably arranged above the working table. According to the multi-layer piece cutting device with the air bag, the two sides of the cloth are pressed downwards and extend outwards, the multiple layers of stacked cloth can be attached together, the gap between the adjacent cloth is reduced, the fluffiness and the like between the adjacent cloth are reduced, the multiple layers of cloth can be cut at a time, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of airbag production, and particularly relates to a multi-layer cutting device for airbags. Background Art

[0002] An airbag is an auxiliary configuration for passive vehicle safety. After a vehicle collides with an obstacle, the airbag quickly inflates into an air cushion filled with gas. The occupant throws onto the air cushion due to inertia, thereby mitigating the impact on the occupant and absorbing the collision energy, reducing the degree of injury to the occupant.

[0003] In the prior art, the production process of an airbag includes steps such as weaving, cleaning, drying and ironing, coating, cutting, and sewing. Among them, the cutting process usually spreads the fabric on a workbench and then cuts it by laser. In this way, only one layer of fabric can be cut at a time. If two or more layers of fabric are laid, the adjacent layers of fabric will be fluffy due to the gaps between them, resulting in deviation in cutting dimensions. Moreover, the fabric cannot be straightened at the output end to match the input end after cutting, and multiple layers of fabric cannot be laid for cutting. Currently, due to the extremely low production efficiency of single-layer fabric cutting, it can no longer meet the production requirements. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a multi-layer cutting device for airbags, which can be used for cutting multiple layers of fabric.

[0005] To achieve the above object, the utility model is realized by the following technical solution: A multi-layer cutting device for airbags includes a workbench, a lower pressing roller, a driving mechanism, and a laser tube;

[0006] Lower pressing rollers are arranged above both sides of the workbench. The axial direction of the lower pressing roller is set along the conveying direction of the fabric. The lower pressing roller is rotatably arranged, and the end is connected to a power source;

[0007] The driving mechanism includes a cylinder and a connecting rod. The cylinder is fixedly arranged above the workbench and is connected to the connecting rod. The connecting rod is connected to the lower pressing roller and its power source;

[0008] The laser tube is movably arranged above the workbench.

[0009] After multiple layers of fabric are sent to the workbench, the cylinder extends to push the connecting rod and the lower pressing roller to descend and press on both sides of the fabric. Subsequently, the power source drives the two lower pressing rollers to rotate relatively, pulling the two sides of the pressed fabric outwards, so that the multiple layers of stacked fabric are attached to each other, and the laser tube can cut the fabric according to a predetermined program.

[0010] The beneficial effects of the above-mentioned multi-layer cutting device for airbags are as follows: By pressing down on both sides of the fabric and stretching it outwards, the multi-layer stacked fabrics can be adhered together, reducing the gaps and fluffiness between adjacent fabrics, etc., so that multiple layers of fabrics can be cut at one time, improving production efficiency.

[0011] Further, one end of the connecting rod is connected to the cylinder, and the other end is a U-shaped end. The pressing roller is located inside the U-shaped end and is rotatably connected to the inner sides of both ends of the U-shaped end respectively. One end of the pressing roller is connected to the power source.

[0012] The pressing roller is rotatably arranged inside the U-shaped end of the connecting rod, which has higher stability. By driving the connecting rod to rise and fall through the cylinder, the pressing roller can be driven to rise and fall.

[0013] Further, the driving mechanism further includes a cross bar, and both ends of the U-shaped ends of the two connecting rods are connected to each other through the cross bar;

[0014] The driving mechanism further includes a rack, a driving gear and a driven gear. The power source is arranged on the cross bar and is connected to the driving gear. The rack is movably arranged on the cross bar. One end of the U-shaped end of the connecting rod is provided with a driven gear connected to the pressing roller, and both ends of the rack are respectively meshed with the driven gear and the driving gear.

[0015] The connection of the connecting rods on both sides can improve stability. After the pressing roller descends to press the fabric, the power source drives the driving gear to rotate, the driving gear drives the rack to move, thereby driving the driven gear and the pressing roller to rotate, and the rotation of the pressing roller can adjust the fabric to stretch outwards and straighten the fabric.

[0016] Further, a limit clamp is arranged on the cross bar, and the rack is slidably inserted into the limit clamp.

[0017] The limit clamp can limit the rack to move only along its axial direction.

[0018] Further, it further includes a second driving gear, and the second driving gear is rotatably arranged on the cross bar and meshes with the driving gear; There are two racks, one end of which is respectively meshed with the driving gear and the second driving gear, and the other end is respectively meshed with the two driven gears.

[0019] When the power source drives the driving gear to rotate, it can drive the second driving gear to rotate at the same time, and drive the two racks to move relatively respectively, thereby driving the two driven gears to rotate relatively, so that the two pressing rollers rotate relatively and press the two sides of the fabric to stretch outwards and straighten. Description of the Drawings

[0020] To more clearly illustrate the specific embodiments of the present utility model, the following will briefly introduce the drawings required for the specific embodiments. In all the drawings, the components or parts are not necessarily drawn to actual scale.

[0021] Figure 1 The front view of a multi-layer cutting device for an airbag provided by an embodiment of the present utility model;

[0022] Figure 2 For Figure 1 The top view of a multi-layer cutting device for an airbag as shown;

[0023] Figure 3 For Figure 1 The side view of the drive mechanism of a multi-layer cutting device for an airbag as shown;

[0024] Reference numerals:

[0025] 10 - Workbench;

[0026] 20 - Lower pressing roller;

[0027] 30 - Drive mechanism, 31 - Cylinder, 32 - Connecting rod, 33 - Cross bar, 331 - Limit clamp, 34 - Motor, 35 - Rack, 361 - Driving gear, 362 - Second driving gear, 37 - Driven gear;

[0028] 40 - Laser tube. Specific embodiments

[0029] The following will describe in detail the embodiments of the technical solution of the present utility model with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, so they are only examples and cannot be used to limit the protection scope of the present utility model.

[0030] Please refer to Figures 1 to 3 , the present utility model provides a multi-layer cutting device for an airbag, including a workbench 10, a lower pressing roller 20, a drive mechanism 30 and a laser tube 40. After the fabric is conveyed onto the workbench 10, under the drive of the drive mechanism 30, the lower pressing roller 20 presses the fabric flat and straight, and the laser tube 40 can then cut the fabric.

[0031] Specifically, lower pressing rollers 20 are provided above both sides of the workbench 10. The axial direction of the lower pressing roller is arranged along the conveying direction of the fabric and is rotatably arranged, and the end is connected to a power source capable of driving it to rotate. The drive mechanism 30 includes a cylinder 31 and a connecting rod 32. The cylinder 31 is fixedly arranged on the frame above the workbench 10 and is connected to the connecting rod 32. The connecting rod 32 is connected to the lower pressing roller 20 and its power source. The laser tube 40 is movably arranged on the frame above the workbench 10.

[0032] After the multi-layer fabric is conveyed to the tabletop of the workbench 10, the air cylinder 31 extends and pushes the lower pressing roller 20 downward through the connecting rod 32, so that it presses on both sides of the fabric. Subsequently, the power source drives the two lower pressing rollers 20 to rotate relative to each other, stretching the two sides of the pressed fabric outward, so that the multi-layer stacked fabrics are straightened and adhered to each other. The laser tube 40 can be started and moved according to a predetermined program to cut the multi-layer fabrics closely adhered together, greatly improving the production efficiency.

[0033] In this embodiment, one end of the connecting rod 32 is connected to the air cylinder 31, and the other end is a U-shaped end. The lower pressing roller 20 is located inside the U-shaped end, and both ends are respectively rotatably connected to the inner sides of both ends of the U-shaped end. One end of the lower pressing roller 20 is connected to the power source. Rotatably arranged inside the U-shaped end of the connecting rod 32, it can make the lower pressing roller have higher stability. By driving the connecting rod 32 to rise and fall through the air cylinder 31, the lower pressing roller 20 can be driven to rise and fall.

[0034] Specifically, the driving mechanism 30 further includes a cross bar 33, and both ends of the U-shaped ends of the two connecting rods 32 are connected to each other through the cross bar 33. The driving mechanism 30 further includes a rack 35, a driving gear 361 and a driven gear 37. The power source is arranged on the cross bar 33 and connected to the driving gear 361, and can drive the driving gear 361 to rotate. The rack 35 is movably arranged on the cross bar 33, and one end of the U-shaped end of the connecting rod 32 is provided with a driven gear 37 connected to the lower pressing roller 20. Both ends of the rack 35 are respectively meshed with the driven gear 37 and the driving gear 361. In this embodiment, the power source is a motor 34.

[0035] The mutual connection of the connecting rods 32 on both sides can improve the stability and synchronism. After the lower pressing roller 20 descends to press on both sides of the fabric, the motor 34 drives the driving gear 361 to rotate, and the driving gear 361 drives the rack 35 to move, thereby driving the driven gear 37 and the lower pressing roller 20 to rotate. The rotation of the lower pressing roller can adjust the fabric to stretch outward and straighten the fabric.

[0036] Specifically, it further includes a second driving gear 362. The second driving gear 362 is rotatably arranged on the cross bar 33 and meshed with the driving gear 361. There are two racks 35, one end of which is respectively meshed with the driving gear 361 and the second driving gear 362, and the other end is respectively meshed with the two driven gears 37. When the motor 34 drives the driving gear 361 to rotate, it can simultaneously drive the second driving gear 362 to rotate and drive the two racks 35 to move relatively, thereby driving the two driven gears 37 to rotate relatively, so that the two lower pressing rollers 20 rotate relatively and press on both sides of the fabric to stretch and straighten it.

[0037] In addition, a limit clamp 331 is arranged on the cross bar 33, and the rack 35 is slidably inserted into the limit clamp 331. The limit clamp 331 can limit the rack 35 to move only along its axial direction.

[0038] The working principle of the above multi-layer cutting device for an airbag is as follows: After the multi-layer fabric is conveyed to the workbench 10, the cylinder 31 extends and pushes the lower pressing roller 20 downward through the connecting rod 32, pressing it on both sides of the fabric. Subsequently, the motor 34 drives the driving gear 361 to rotate, and drives the second driving gear 362 to rotate. Under the transmission of the rack 35 and the driven gear 37, the two lower pressing rollers 20 rotate relative to each other, stretching the two sides of the pressed fabric outwards, so that the multi-layer stacked fabrics are straightened and adhered to each other. The laser tube 40 can be started and moved according to a predetermined program to cut the multi-layer fabrics closely adhered together.

[0039] Using the above multi-layer cutting device for an airbag can press and straighten the fabric, make the multi-layer fabrics closely adhered together, facilitate simultaneous cutting, and greatly improve production efficiency.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A multi-layer cutting device for an airbag, characterized in that: It includes a workbench, a lower pressing roller, a driving mechanism and a laser tube; Lower pressing rollers are arranged above both sides of the workbench. The axial direction of the lower pressing roller is set along the conveying direction of the fabric. The lower pressing roller is rotatably arranged, and a power source is connected to the end; The driving mechanism includes a cylinder and a connecting rod. The cylinder is fixedly arranged above the workbench and is connected to the connecting rod. The connecting rod is connected to the lower pressing roller and its power source; The laser tube is movably arranged above the workbench.

2. The multi-layer cutting device for airbags according to claim 1, characterized in that: One end of the connecting rod is connected to the cylinder, and the other end is a U-shaped end. The lower pressing roller is located inside the U-shaped end and is respectively rotatably connected to the inner sides of both ends of the U-shaped end. One end of the lower pressing roller is connected to the power source.

3. The multi-layer cutting device for airbags according to claim 2, characterized in that: The driving mechanism further includes a cross bar, and both ends of the U-shaped ends of the two connecting rods are connected to each other through the cross bar; The driving mechanism further includes a rack, a driving gear and a driven gear. The power source is arranged on the cross bar and is connected to the driving gear. The rack is movably arranged on the cross bar. Driven gears connected to the lower pressing roller are arranged at one ends of the U-shaped ends of the connecting rod. Both ends of the rack are respectively meshed with the driven gear and the driving gear.

4. The multi-layer cutting device for airbags according to claim 3, characterized in that: A limit clamp is arranged on the cross bar, and the rack is slidably inserted into the limit clamp.

5. The multi-layer cutting device for airbags according to claim 3, characterized in that: It further includes a second driving gear. The second driving gear is rotatably arranged on the cross bar and is meshed with the driving gear; There are two racks, one ends of which are respectively meshed with the driving gear and the second driving gear, and the other ends are respectively meshed with the two driven gears.

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