A safety device coiling apparatus for an airbag

Abstract

This invention discloses a rolling device for safety devices used in airbags, relating to the technical field of airbag production. It includes a conveying and grinding mechanism, a rolling mechanism located on the discharge side of the conveying and grinding mechanism, a discharge magnetic transfer mechanism, and a size detection mechanism. The rolling mechanism comprises a lifting servo base, a lifting guide slide, a lower forming rolling roller, a drive pulley, a transmission belt, an upper pressure roller servo lifting assembly, an upper pressure forming roller, a driven pulley, a feeding side clamping and positioning assembly, a feeding cylinder fixing base, a transverse feeding drive cylinder, a feeding support limit block, and a workpiece pre-bending auxiliary roller assembly. This device features a conveying and grinding mechanism that uses a conveyor belt mounting bracket in conjunction with a grindable belt to achieve continuous automatic workpiece feeding, replacing manual loading and transfer. The pressure roller is floatingly mounted via a pressure roller bracket, enabling adaptive clamping and positioning based on workpiece thickness.

Description

Technical Field

[0001] This invention relates to the technical field of airbag manufacturing, and specifically to a rolling device for airbag safety devices. Background Technology

[0002] Airbag safety devices are key automotive safety components. Their rolling forming accuracy, end face flatness, and product consistency directly affect the assembly accuracy and reliability of airbags. Currently, existing rolling processing equipment still has many technical defects in actual production.

[0003] First, most traditional rolling processing equipment lacks a pre-automated grinding structure, resulting in burrs, flash, and sharp edge defects on the edges of workpieces after stamping and cutting. Existing processes often use manual grinding or simple grinding equipment for separate pre-treatment, which results in poor grinding uniformity, unstable grinding accuracy, and easy occurrence of grinding residue and uneven workpiece edges. Workpieces that have not been precision ground directly enter the rolling process, which can easily lead to poor sealing of rolling joints, slag inclusions, and edge deformation. Secondly, existing rolling equipment generally suffers from unstable positioning during workpiece conveying. Workpieces are prone to offset, warping, and slippage during conveying, resulting in large deviations in the workpiece feeding position, which directly affects the subsequent rolling forming accuracy. Moreover, traditional rolling structures mostly lack pre-bending and shaping structures. Flat metal blanks are directly subjected to strong pressure rolling, and the stress of the metal material cannot be released in advance. After rolling, quality defects such as springback deformation, uneven opening gaps, and poor roundness are very likely to occur, resulting in poor product consistency and a high scrap rate. Summary of the Invention

[0004] The purpose of this invention is to provide a safety device rolling device for airbags to solve the above-mentioned defects caused by the prior art.

[0005] A safety device rolling device for airbags includes a conveying and grinding mechanism, a rolling mechanism located on the discharge side of the conveying and grinding mechanism, a discharge magnetic suction transfer mechanism, and a size detection mechanism. The rolling mechanism includes a lifting servo base, a lifting guide slide, a lower forming rolling roller, a drive pulley, a transmission belt, an upper pressure roller servo lifting assembly, an upper pressure forming roller, a driven pulley, a feeding side clamping and positioning assembly, a feeding cylinder fixing base, a transverse feeding drive cylinder, a feeding support limit block, and a workpiece pre-bending auxiliary roller assembly. The lifting servo base is topped with a lifting guide slide, on which the lower forming rolling roller and the drive pulley are mounted, with the drive pulley and the lower forming rolling roller coaxially driven. The upper pressure roller servo lifting assembly is vertical. The upper forming roller and driven pulley are mounted on the output end of the upper pressure roller servo lifting assembly, which is positioned directly above the lower forming roller. The driven pulley and the upper forming roller are coaxially driven. The driving pulley is connected to the driven pulley via a transmission belt to provide synchronous rotation power for the upper and lower forming rollers. The feeding cylinder fixing base is fixed to the side of the rolling mechanism frame. A transverse feeding drive cylinder is mounted on the feeding cylinder fixing base. The output end of the transverse feeding drive cylinder is connected to the feeding support limit block. The feeding side clamping and positioning assembly is set at the feeding end of the rolling station. The workpiece pre-bending auxiliary roller assembly is arranged between the feeding side clamping and positioning assembly and the rolling forming station to pre-bend and shape the workpiece and eliminate rolling springback stress.

[0006] Preferably, the conveying and grinding mechanism includes a lateral support, a grinding spindle servo power base, a conveyor belt mounting bracket, a workpiece rotary grinding assembly, a pressure roller bracket, and a pressure roller. A grindable belt is arranged on the conveyor belt mounting bracket, and a pressure roller is assembled on the pressure roller bracket. The pressure roller presses against the top of the grindable belt to press the workpiece to be processed. The lateral support is fixed to the side of the conveyor belt mounting bracket, and the grinding spindle servo power base is installed on the lateral support. The grinding spindle servo power base is driven to connect to the workpiece rotary grinding assembly. The workpiece rotary grinding assembly is set according to the workpiece travel path of the grindable belt and is used to grind and trim the burrs on the edges of the workpiece that has been conveyed to the designated position.

[0007] Preferably, the transverse feeding drive cylinder drives the feeding support limiting block to move back and forth in the horizontal direction, and the feeding support limiting block pushes the polished workpiece into the feeding side clamping and positioning component to complete the positioning.

[0008] Preferably, the lifting servo base drives the lifting guide slide, lower forming roll roller, active pulley and transmission belt to lift vertically as a whole through the servo screw, and works in conjunction with the upper pressure roller servo lifting assembly to drive the lower pressure stroke of the upper pressure forming roller and the driven pulley, so as to adjust the radial dimension of the roll forming.

[0009] Preferably, the pressure roller is floatingly mounted above the conveyor belt mounting bracket via a pressure roller bracket, and the pressure roller adaptively floats and presses the workpiece according to its thickness.

[0010] Preferably, the workpiece pre-bending auxiliary roller assembly adopts a side-mounted driven roller structure. After the pre-bending auxiliary roller extends out, it presses against both ends of the workpiece to pre-press the flat blank into a U-shaped semi-finished product.

[0011] Preferably, the discharge magnetic transfer mechanism includes an electric translation slide rail, a sliding mounting slider, and a workpiece magnetic electromagnet block; the electric translation slide rail is horizontally fixed to the side frame of the rolling station, the sliding mounting slider is slidably mounted on the electric translation slide rail, and the workpiece magnetic electromagnet block is fixedly mounted on the front end of the sliding mounting slider; the electric translation slide rail drives the sliding mounting slider to move horizontally back and forth with the electromagnet block, and the electromagnet block is energized to attract the rolled metal workpiece, realizing automatic material handling and discharge of finished products.

[0012] Preferably, the transmission belt adopts a synchronous toothed belt structure, and both the driving pulley and the driven pulley are provided with meshing tooth grooves that match the synchronous toothed belt, so as to achieve complete synchronization of the rotation speed of the upper and lower forming rollers by relying on tooth meshing.

[0013] Preferably, the feeding side clamping and positioning assembly includes clamping cylinders and positioning blocks arranged symmetrically on the left and right sides. The positioning blocks on both sides extend and retract to clamp the workpiece, thereby limiting and fixing the workpiece in the width direction.

[0014] Preferably, the dimensional detection mechanism includes a geared motor, a rotating tray, a parallel backlight, an industrial camera, and a telecentric lens. The output shaft of the geared motor is arranged vertically upwards. The rotating tray is coaxially disposed at the top of the output shaft of the geared motor. The upper surface of the rotating tray is used to support the rolled workpiece to be inspected, and the geared motor drives the rolled workpiece to rotate uniformly around the vertical axis. The parallel backlight and the industrial camera are respectively disposed on opposite sides of the rotating tray along the radial direction. The telecentric lens is mounted on the shooting end of the industrial camera. The light-emitting surface of the parallel backlight is directly opposite the rotation center of the rotating tray. The shooting optical axis formed by the industrial camera through the telecentric lens is coaxial with the light-emitting optical axis of the parallel backlight and is horizontally disposed.

[0015] Compared with the prior art, the present invention has the following advantages: 1. This device is equipped with a conveyor grinding mechanism. Through the conveyor belt mounting bracket and the grinding belt, continuous automatic feeding of workpieces is achieved, replacing manual loading and transfer. The pressure roller is floatingly mounted through a pressure roller bracket, allowing for adaptive clamping and positioning based on workpiece thickness. This effectively prevents workpiece warping, slippage, and offset during grinding and conveying. Simultaneously, relying on the stable support of the lateral support base, the grinding spindle servo power seat stably drives the workpiece rotation grinding assembly at high speed, precisely and evenly grinding and trimming burrs and flash on the workpiece edges. This thoroughly removes workpiece processing defects, ensuring flat workpiece end faces and consistent dimensions. It eliminates problems such as poor subsequent rolling and bonding, and poor forming caused by burrs and sharp edges, significantly improving the yield rate of subsequent rolling and forming, and ensuring the processing accuracy and safety of airbag devices.

[0016] 2. This device is equipped with a rolling mechanism, which uses a transverse feeding drive cylinder in conjunction with a feeding support limit block to achieve automated and precise feeding. It is also equipped with a feeding side clamping and positioning component to clamp and limit the workpiece, ensuring that each workpiece enters the rolling station in a uniform position with high positioning accuracy and eliminating processing deviations. Secondly, a workpiece pre-bending auxiliary roller assembly is added, which can pre-press the flat blank into a U-shaped structure, release material stress in advance, effectively counteract the springback deformation of the metal workpiece after rolling, and ensure that the interface is tightly fitted and the roundness is uniform after rolling.

[0017] 3. This device adopts a dual-servo lifting structure. The lifting servo base drives the transmission belt to lift and lower as a whole, which, together with the upper pressure roller servo lifting assembly, drives the upper forming roller and the driven pulley to press down. This allows for precise control of the radial forming dimension of the roll, with high forming adjustment accuracy and strong adaptability, meeting the rolling processing requirements of airbag devices of different specifications. The overall rolling process has a high degree of automation and good forming stability, effectively reducing manual intervention, reducing defective products, and significantly improving product consistency and production efficiency. After the rolling is completed, the upper pressure roller servo lifting assembly drives the upper forming roller to rise and reset, the lifting servo base drives the lower forming rolling roller to descend, the feeding side clamping and positioning component is released, and then the discharge magnetic transfer mechanism moves the finished product out of the rolling station to the next process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the lifting servo base of the present invention. Figure 3 For the present invention Figure 2 A magnified structural diagram of point a in the middle.

[0020] Figure 4 This is a schematic diagram of the overall side view structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the overall front view structure of the present invention.

[0022] Figure 6 This is a side view of the magnetic material transfer mechanism for discharging material in this invention.

[0023] in: 1. Lifting servo base; 2. Lifting guide slide; 3. Drive pulley; 4. Transmission belt; 5. Driven pulley; 6. Feeding side clamping and positioning assembly; 7. Feeding cylinder fixed base; 8. Lateral feeding drive cylinder; 9. Feeding support limit block; 10. Workpiece pre-bending auxiliary roller assembly; 11. Lateral support seat; 12. Grinding spindle servo power seat; 13. Conveyor belt mounting bracket; 14. Workpiece rotary grinding assembly; 15. Pressure roller bracket; 16. Pressure roller; 17. Electric translation slide rail; 18. Sliding mounting slider; 19. Workpiece magnetic electromagnet block; 20. Gear motor; 21. Rotary tray; 22. Parallel backlight; 23. Industrial camera; 24. Telecentric lens. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] like Figures 1 to 6As shown, a safety device rolling device for airbags includes a conveying and grinding mechanism, a rolling mechanism located on the discharge side of the conveying and grinding mechanism, a discharge magnetic suction transfer mechanism, and a size detection mechanism. The rolling mechanism includes a lifting servo base 1, a lifting guide slide 2, a lower forming rolling roller, a drive pulley 3, a transmission belt 4, an upper pressure roller servo lifting assembly, an upper pressure forming roller, a driven pulley, a feeding side clamping and positioning assembly, a feeding cylinder fixing base, a transverse feeding drive cylinder, a feeding support limit block, and a workpiece pre-bending auxiliary roller assembly. The lifting servo base is equipped with a lifting guide slide on top, and the lower forming rolling roller and the drive pulley are mounted on the lifting guide slide. The upper forming roller has a drive pulley that is coaxially driven with the lower forming roller. The upper pressure roller servo lifting assembly is vertically positioned directly above the lower forming roller. The output end of the upper pressure roller servo lifting assembly is fitted with the upper forming roller and the driven pulley, which are coaxially driven with the upper forming roller. The drive pulley is connected to the driven pulley via a transmission belt, providing synchronous rotational power to the upper and lower forming rollers. A feeding cylinder mounting base is fixed to the side of the rolling mechanism frame. A transverse feeding drive cylinder is mounted on the feeding cylinder mounting base. The output end of the transverse feeding drive cylinder is connected to a feeding support limit block. A feeding side clamping and positioning component is located at the feeding end of the rolling station. A workpiece pre-bending auxiliary... The roller assembly is positioned between the feeding side clamping and positioning assembly and the rolling forming station, used for pre-bending and shaping the workpiece and eliminating rolling springback stress. The discharge magnetic transfer mechanism includes an electric translation slide rail, a sliding mounting slider, and a workpiece magnetic electromagnet block. The electric translation slide rail is horizontally fixed to the side frame of the rolling station, the sliding mounting slider is slidably mounted on the electric translation slide rail, and the workpiece magnetic electromagnet block is fixedly mounted on the front end of the sliding mounting slider. The electric translation slide rail drives the sliding mounting slider to move horizontally back and forth with the electromagnet block. When the electromagnet block is energized, it attracts the rolled metal workpiece, realizing automatic material handling and discharge of the finished product, as well as dimensional detection. The mechanism includes a geared motor, a rotating tray, a parallel backlight, an industrial camera, and a telecentric lens. The output shaft of the geared motor is arranged vertically upwards, and the rotating tray is coaxially mounted on the top of the output shaft of the geared motor. The upper surface of the rotating tray is used to support the rolled workpiece to be inspected, and the geared motor drives the rolled workpiece to rotate at a constant speed around the vertical axis. The parallel backlight and the industrial camera are positioned on opposite sides of the rotating tray along the radial direction, and the telecentric lens is mounted on the shooting end of the industrial camera. The light-emitting surface of the parallel backlight faces the rotation center of the rotating tray, and the shooting optical axis formed by the industrial camera through the telecentric lens is coaxial with the light-emitting optical axis of the parallel backlight and is set horizontally.

[0026] In this embodiment, the conveying and grinding mechanism includes a lateral support 11, a grinding spindle servo power base 12, a conveyor belt mounting bracket 13, a workpiece rotary grinding assembly 14, a pressure roller bracket 15, and a pressure roller 16. A grindable belt is arranged on the conveyor belt mounting bracket 13. The pressure roller bracket 15 is equipped with the pressure roller 16, which presses against the top of the grindable belt to press the workpiece to be processed. The lateral support 11 is fixed to the side of the conveyor belt mounting bracket 13. The grinding spindle servo power base 12 is installed on the lateral support 11. The grinding spindle servo power base 12 is connected to the workpiece rotary grinding assembly 14. The workpiece rotary grinding assembly 14 is set according to the workpiece travel path of the grindable belt and is used to grind and trim the burrs on the edges of the workpiece that has been conveyed to the position.

[0027] In this embodiment, the transverse feeding drive cylinder 8 drives the feeding support limit block 9 to reciprocate in the horizontal direction. The feeding support limit block 9 pushes the polished workpiece into the feeding side clamping and positioning assembly 6 for positioning. The lifting servo base 1 drives the lifting guide slide 2, the lower forming rolling roller, the active pulley 3, and the transmission belt 4 to rise and fall vertically as a whole through the servo screw. It works in conjunction with the upper pressure roller servo lifting assembly to drive the lower pressure stroke of the upper pressure forming roller and the driven pulley 5, and together adjust the radial dimension of the rolling forming. The pressure roller 16 is floatingly mounted above the conveyor belt mounting bracket 13 through the pressure roller bracket 15. The pressure roller 16 adaptively floats and presses according to the thickness of the workpiece. The workpiece pre-bending auxiliary roller assembly 10 adopts a side-mounted driven roller structure. After the pre-bending auxiliary roller extends out, it presses against both ends of the workpiece to pre-press the flat blank into a U-shaped semi-finished product.

[0028] In practical applications, this airbag safety device rolling device includes the following tasks: During operation, the pre-grinding process of the workpiece is first completed by the conveyor grinding mechanism. The workpiece is placed on the grindable belt installed on the conveyor belt mounting bracket 13, and the grindable belt drives the workpiece forward. The pressure roller 16 mounted on the pressure roller bracket 15 presses against the top of the grindable belt. The pressure roller 16 adopts a floating installation structure, which can adaptively float and press the workpiece according to the actual thickness of the workpiece to be processed, effectively avoiding the problems of edge warping, slippage and deviation of the workpiece during conveying and grinding. The lateral support seat 11 is fixed to the conveyor belt. The mounting bracket 13 provides stable support for the conveying and grinding mechanism. The grinding spindle servo power seat 12, mounted on the side support seat 11, outputs power to drive the workpiece rotation grinding assembly 14 to rotate at high speed. The workpiece rotation grinding assembly 14 is precisely aligned with the workpiece travel path of the grinding belt, and can uniformly and thoroughly grind and trim the burrs and flash on the edges of the conveyed workpiece, remove the sharp edges and defects generated by the workpiece cutting, ensure the workpiece has a regular shape, and provide a good workpiece foundation for subsequent high-precision rolling and forming. After the workpiece is polished, the rolling mechanism receives the workpiece and completes the fully automatic forming process. The side of the rolling mechanism frame is fixed with a feeding cylinder fixing base 7, which provides a stable installation foundation for the horizontal feeding drive cylinder 8. The horizontal feeding drive cylinder 8 can drive the feeding support limit block 9 connected to the end to move back and forth in the horizontal direction, and smoothly push the polished workpiece into the feeding side clamping and positioning component 6 at the feeding end of the rolling station, so as to achieve precise positioning and clamping of the workpiece, effectively prevent the workpiece from shifting or tilting during the rolling process, and ensure that the feeding position of each batch of workpieces is consistent. After the workpiece is positioned, the workpiece pre-bending auxiliary roller assembly 10, which is arranged between the pressing and positioning assembly 6 on the feeding side and the rolling and forming station, begins to work. This assembly adopts a side-mounted driven roller structure. After the roller extends, it precisely presses against both ends of the flat workpiece blank, pre-pressing the flat workpiece into a U-shaped semi-finished product. This releases the internal stress of the metal material in advance, effectively offsetting the springback deformation after subsequent rolling and forming, and avoiding quality problems such as excessive opening gap, uneven roundness, and poor deformation in the finished product, thus greatly improving the rolling and forming quality. After the workpiece is pre-bent, it enters the precision rolling forming process. The lifting servo base 1 precisely drives the lifting guide slide 2, the active pulley 3, and the transmission belt 4 to rise and fall vertically as a whole through the built-in servo screw. It adjusts the vertical height of the rolling transmission structure and the forming station in real time. At the same time, it coordinates with the downward stroke of the driven pulley 5 to adjust the radial dimension of the rolling forming precisely. It can be adapted to the rolling processing of airbag devices of different thicknesses and specifications. Meanwhile, the active pulley 3, the transmission belt 4, and the driven pulley 5 work together to form a complete transmission structure, providing stable rotational power for the rolling forming process. This ensures that the workpiece is subjected to uniform force and rotates smoothly during the rolling forming process, ensuring that the workpiece is gradually and evenly bent and closed, and finally completing the high-precision and high-roundness rolling forming operation. After the rolling and forming is completed, the upper pressure roller servo lifting assembly drives the upper pressure forming roller to rise, and the lower forming rolling roller descends with the lifting servo base to release the workpiece; the electric translation slide rail 17 drives the sliding installation slider 18 to move the workpiece magnetic electromagnet block 19 to above the finished product. The electromagnet block 19 is energized to generate magnetic force to attract the workpiece. Then the slide rail slides in the opposite direction to move the finished product out of the rolling station. When the power is turned off, the workpiece is released and the automatic material is unloaded. The rolled workpiece is transferred to the center area of ​​the rotating pallet 21 by the conveying mechanism; the geared motor 20 starts and drives the rotating pallet 21 and the workpiece to rotate at a constant speed around the vertical axis through the output shaft; at the same time, the parallel backlight 22 projects uniform parallel light towards the workpiece, forming a high-contrast, clear outline silhouette on the other side of the workpiece; the industrial camera 23 eliminates perspective distortion through the telecentric lens 24 and accurately captures the radial outline image of the workpiece. During one rotation of the workpiece, the industrial camera 23 continuously acquires multiple frames of complete axial contour images of the workpiece; each frame image can extract the radial dimensions of three sections: the left end, the middle, and the right end of the workpiece; combined with the full circumferential data of the entire rotation, after processing by a visual algorithm, the maximum outer diameter, the minimum outer diameter of the workpiece around the entire circumference, and the reference outer diameter of the middle section are finally calculated, corresponding to the process requirement of "three-time photo inspection"; Result output and unloading: after the inspection is completed, the reduction motor 20 stops running, and the inspection data is synchronously uploaded to the equipment control system for qualification judgment and data traceability; then the conveying mechanism moves the workpiece to the unloading station, completing the inspection cycle of a single workpiece.

[0029] Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not exhaustive. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A safety device coiling device for airbags, comprising a conveying polishing mechanism, a coiling mechanism arranged at the discharge side of the conveying polishing mechanism, a discharge magnetic suction transfer mechanism and a size detection mechanism; the coiling mechanism comprises a lifting servo base (1), a lifting guide sliding seat (2), a lower forming coiling roller, a driving pulley (3), a transmission belt (4), an upper pressing roller servo lifting assembly, an upper pressing forming roller, a driven pulley (5), an infeed side edge pressing positioning assembly (6), a feeding cylinder fixed base (7), a transverse feeding driving cylinder (8), an infeed supporting limiting block (9), a workpiece pre-bending auxiliary roller assembly (10); characterized in that: The top of the lifting servo base (1) is equipped with a lifting guide slide (2), on which a lower forming roll roller and a drive pulley (3) are installed. The drive pulley (3) and the lower forming roll roller are driven coaxially. The upper pressure roller servo lifting assembly is vertically arranged directly above the lower forming roll roller. The output end of the upper pressure roller servo lifting assembly is equipped with an upper pressure forming roller and a driven pulley (5). The driven pulley (5) and the upper pressure forming roller are driven coaxially. The drive pulley (3) is connected to the driven pulley (5) through a transmission belt (4) to drive the upper and lower forming rollers. The forming roller provides synchronous rotation power; the feeding cylinder fixing base (7) is fixed to the side of the rolling mechanism frame, and the feeding cylinder fixing base (7) is equipped with a transverse feeding drive cylinder (8). The output end of the transverse feeding drive cylinder (8) is connected to the feeding support limit block (9). The feeding side pressing and positioning component (6) is set at the feeding end of the rolling station. The workpiece pre-bending auxiliary roller component (10) is arranged between the feeding side pressing and positioning component (6) and the rolling forming station, and is used to pre-bend and shape the workpiece and eliminate the rolling springback stress.

2. The airbag safety device rolling device according to claim 1, characterized in that: The conveying and grinding mechanism includes a side support seat (11), a grinding spindle servo power seat (12), a conveyor belt mounting bracket (13), a workpiece rotary grinding assembly (14), a pressure roller bracket (15), and a pressure roller (16). A grindable belt is arranged on the conveyor belt mounting bracket (13). The pressure roller bracket (15) is equipped with the pressure roller (16). The pressure roller (16) presses against the top of the grindable belt to press the workpiece to be processed. The side support seat (11) is fixed to the side of the conveyor belt mounting bracket (13). The grinding spindle servo power seat (12) is installed on the side support seat (11). The grinding spindle servo power seat (12) is connected to the workpiece rotary grinding assembly (14). The workpiece rotary grinding assembly (14) is set according to the workpiece travel path of the grindable belt and is used to grind and trim the burrs on the edge of the workpiece that has been conveyed to the position.

3. The airbag safety device rolling device according to claim 1, characterized in that: The transverse feeding drive cylinder (8) drives the feeding support limit block (9) to move back and forth in the horizontal direction. The feeding support limit block (9) pushes the polished workpiece into the feeding side clamping and positioning assembly (6) to complete the positioning.

4. The airbag safety device rolling device according to claim 1, characterized in that: The lifting servo base (1) drives the lifting guide slide (2), the lower forming roll roller, the active pulley (3) and the transmission belt (4) to lift vertically as a whole through the servo screw. In conjunction with the upper pressure roller servo lifting assembly, it drives the upper pressure forming roller and the driven pulley (5) to press down, and together adjusts the radial dimension of the roll forming.

5. A safety device rolling device for airbags according to claim 2, characterized in that: The pressure roller (16) is floatingly mounted above the conveyor belt mounting bracket (13) via the pressure roller bracket (15), and the pressure roller (16) adaptively floats and presses according to the thickness of the workpiece.

6. The airbag safety device rolling device according to claim 1, characterized in that: The workpiece pre-bending auxiliary roller assembly (10) adopts a side-mounted driven roller structure. After the pre-bending auxiliary roller extends out, it presses against both ends of the workpiece to pre-press the flat blank into a U-shaped semi-finished product.

7. The airbag safety device rolling device according to claim 1, characterized in that: The discharge magnetic transfer mechanism includes an electric translation slide rail (17), a sliding mounting slider (18), and a workpiece magnetic electromagnet block (19). The electric translation slide rail (17) is horizontally fixed to the side frame of the rolling station. The sliding mounting slider (18) is slidably mounted on the electric translation slide rail (17). The workpiece magnetic electromagnet block (19) is fixedly mounted at the front end of the sliding mounting slider (18). The electric translation slide rail (17) drives the sliding mounting slider (18) to move horizontally back and forth with the electromagnet block (19). The electromagnet block (19) is energized to attract the rolled metal workpiece, thereby realizing automatic material handling and discharge of the finished product.

8. The airbag safety device rolling device according to claim 1, characterized in that: The transmission belt adopts a synchronous toothed belt structure. The driving pulley (3) and the driven pulley (5) are both equipped with meshing tooth grooves that match the synchronous toothed belt. The rotation speed of the upper and lower forming rollers is completely synchronized by relying on tooth meshing.

9. A safety device rolling device for airbags according to claim 1, characterized in that: The feeding side clamping and positioning assembly (6) includes clamping cylinders and positioning blocks arranged symmetrically on the left and right. The positioning blocks on both sides extend and retract to clamp the workpiece, thereby achieving workpiece width direction limitation and fixation.

10. A safety device rolling device for airbags according to claim 1, characterized in that: The size detection mechanism includes a geared motor (20), a rotating tray (21), a parallel backlight (22), an industrial camera (23), and a telecentric lens (24). The output shaft of the geared motor (20) is arranged vertically upward. The rotating tray (21) is coaxially disposed at the top of the output shaft of the geared motor (20). The upper surface of the rotating tray (21) is used to support the rolled workpiece to be detected and is driven by the geared motor (20) to rotate the rolled workpiece at a constant speed around the vertical axis. The parallel backlight (22) and the industrial camera (23) are respectively disposed on opposite sides of the rotating tray (21) along the radial direction. The telecentric lens (24) is mounted on the shooting end of the industrial camera (23). The light-emitting surface of the parallel backlight (22) is directly opposite the rotation center of the rotating tray (21). The shooting optical axis formed by the industrial camera (23) through the telecentric lens (24) is coaxial with the light-emitting optical axis of the parallel backlight (22) and is horizontally disposed.

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