Airbag cover surface leather coating forming production system

Abstract

The invention discloses a safety airbag cover surface leather coating forming production system which comprises a cutting station, a gluing station, a sewing station, a coating station, a vacuum activation station, a hot stamping station, a punching station and a detection station which are sequentially matched and are integrally arranged in a U shape. The gluing station is suitable for carrying out glue coating on leather, the sewing station is suitable for splicing the leather, the coating station is suitable for carrying out pre-coating, the vacuum activating station is suitable for firstly heating glue in the leather to activate the leather and then carrying out adsorption fitting on a safety airbag cover and the leather, and the hot stamping station is suitable for carrying out mark hot stamping on the leather. The punching station is suitable for punching the safety air bag cover, and the detection station is suitable for conducting quality detection on the wrapped safety air bag cover. The leather coating equipment has the beneficial effects that centralized treatment of all working procedures in leather coating is achieved, long-distance product transfer between different working procedures is avoided, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile interior decoration production equipment, and in particular to a production system for leather overmolding of the surface of an airbag cover. Background Art

[0002] As the main component that affects the deployment of the airbag, the design of the airbag cover must not only meet the functional requirements, but also be consistent with the appearance of the entire steering wheel. Modern airbag covers are usually made of high-strength plastic materials such as polypropylene (PP) or polycarbonate (PC), which have good impact resistance and durability.

[0003] In order to pursue the aesthetics and touch feel of the airbag cover, the current airbag cover is covered with a layer of leather on the surface, so there will be a series of production processes, such as leather cutting, leather connection, decorative line sewing, glue processing, glue rolling, gluing, baking, etc., and the existing production method is still mainly manual, and the products need to be transported to different workshops between different processes, which greatly reduces the production efficiency. Therefore, a leather overmolding production system for the surface of an airbag cover is proposed to solve the above technical problems. Summary of the invention

[0004] One of the purposes of the present application is to provide a production system for leather overmolding of the surface of an airbag cover.

[0005] To achieve the above objectives, the technical solution adopted in the present application is: a production system for leather overmolding of the surface of an airbag cover, comprising: a cutting station, a gluing station, a sewing station, a covering station, a vacuum activation station, a hot stamping station, a punching station and an inspection station, which are arranged in sequence and in a U-shape as a whole. The cutting station is suitable for cutting the leather into a set shape, the gluing station is suitable for coating the leather with glue, the sewing station is suitable for splicing the leather, the covering station is suitable for pre-covering the airbag cover and the leather, the vacuum activation station is suitable for first heating the glue in the leather to activate it, and then adsorbing and bonding the airbag cover and the leather under vacuum conditions, the hot stamping station is suitable for hot stamping logos on the leather, the punching station is suitable for punching holes in the airbag cover, and the inspection station is suitable for quality inspection of the covered airbag cover.

[0006] Preferably, the gluing station includes a glue coating device, which includes a workbench, a gluing mechanism, a conveying mechanism and an adjusting device. The gluing mechanism is installed above the workbench, the conveying mechanism is installed on the workbench and cooperates with the gluing mechanism to form a gluing area, and the adjusting device is installed on the workbench and connected to the conveying mechanism; the adjusting device is suitable for driving the conveying mechanism to perform lifting and lowering adjustment so that the gluing area can adapt to products of different thicknesses.

[0007] Preferably, the conveying mechanism includes a conveying roller, a driving device and a support frame. The support frame is horizontally rotatably installed on the workbench and connected to the adjusting device. The conveying roller is horizontally rotatably installed on the support frame and cooperates with the gluing mechanism to form the gluing area. The driving device is installed on the support frame and the output end is connected to the conveying roller. When adjusting, the adjusting device is suitable for driving the support frame to rotate along the workbench, thereby realizing the lifting and lowering adjustment of the conveying roller.

[0008] Preferably, the adjusting device comprises a telescopic member, a baffle and a lead screw 1, the telescopic member is hingedly mounted on the workbench, and the piston end of the telescopic member is hingedly mounted on the support frame; the baffle is vertically slidably mounted on the workbench, and the lead screw 1 is vertically rotatably mounted on the workbench and cooperates with the baffle; when making adjustments, the lead screw 1 is rotated to drive the baffle to adjust its height, and the support frame is suitable for rotating under the drive of the telescopic member until it abuts against the baffle, so as to achieve a limit lock on the conveying roller.

[0009] Preferably, the glue coating mechanism includes a glue chamber, a glue coating roller and a pair of limiting rollers, the glue chamber is installed above the workbench, the glue coating roller is rotatably installed at the unloading port at the bottom end of the glue chamber, and the glue coating roller cooperates with the conveying roller to form the glue coating area, and the limiting rollers are symmetrically installed on both sides of the bottom end of the glue chamber with the glue coating roller as the center and cooperate with the glue coating roller; the glue coating mechanism also includes a second screw and a frame, one of the limiting rollers is rotatably installed on the frame, the frame is horizontally slidably installed on the glue chamber, and the second screw is horizontally rotatably installed in the glue chamber and cooperates with the frame; the second screw is rotated to drive the limiting roller to move horizontally, thereby adjusting the unloading gap between the limiting roller and the glue coating roller.

[0010] Preferably, the wrapping station includes a tooling fixture for pre-wrapping leather of the airbag cover, which includes: a workbench, a plurality of clamping members and a plurality of limit assemblies, the middle portion of the workbench has a placement station for placing the airbag cover, the clamping member is rotatably mounted on the workbench through the first end, the second end of the clamping member has a clamping portion, the limit assembly is mounted on the workbench and cooperates with the corresponding clamping member; when clamping, the clamping member is suitable for rotating until the clamping portion abuts against the airbag cover, and the limit assembly is suitable for locking the clamping member; when loosening, the limit assembly is suitable for releasing the lock on the clamping member, and then the clamping member is suitable for reversing and making the clamping portion move away from the airbag cover.

[0011] Preferably, the limit assembly includes a limit pin, which is movably arranged on the workbench; a fixing ring is installed on the outside of the rotating shaft at the first end of the clamping member, and a plurality of limit grooves are provided on the outside of the fixing ring; when the limit pin cooperates with the limit groove, the clamping member can be locked.

[0012] Preferably, the limit pin is movably mounted on the workbench via an elastic member; when the clamping member is locked, the limit pin is adapted to cooperate with the limit groove under the action of elastic force.

[0013] Preferably, a plurality of sleeves are installed on the workbench, the sleeves are sleeved on the corresponding outside of the limit pins, and the end of the sleeve is provided with a bevel slope, the bevel slope has a slope bottom and a slope top, and a paddle is installed on the end of the limit pin; when the clamp is locked, the paddle is suitable for cooperating with the slope bottom; when the clamp is unlocked, the limit pin is suitable for rotating through the paddle, and then the limit pin is suitable for moving under the wedge-shaped extrusion cooperation between the paddle and the bevel slope until it is away from the limit groove.

[0014] Preferably, a base is provided under the workbench, and the base and the workbench are connected by a lifting rod; the workbench is installed on the movable end of the lifting rod through a driving component, and the driving component is suitable for rotating and adjusting the workbench; the tooling fixture for pre-wrapping leather of airbag cover also includes a foot switch, and the foot switch is electrically connected to the driving component; the driving component is suitable for driving the workbench to rotate to a set angle under the action of the foot switch.

[0015] Compared with the prior art, the beneficial effects of this application are: The present invention is provided with multiple workstations, and the multiple workstations are generally U-shaped, so that the leather covering forms a semi-automatic production system, and the various workstations cooperate closely, thus realizing centralized processing of all processes in the leather covering, avoiding long-distance transfer of products between different processes, and greatly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the station distribution structure of the production line of the present invention.

[0017] Figure 2 It is a schematic diagram of the overall structure of the glue coating device of the present invention.

[0018] Figure 3 For the present invention Figure 2 Schematic diagram of the local structure in.

[0019] Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure.

[0020] Figure 5 For the present invention Figure 4 Schematic diagram of the local structure in.

[0021] Figure 6 It is a schematic diagram of the regulating device and conveying mechanism of the present invention.

[0022] Figure 7 For the present invention Figure 6 Schematic diagram of the cross-sectional structure.

[0023] Figure 8 It is a schematic diagram of the adjustment device and the conveying mechanism of the present invention after being disassembled.

[0024] Fig. 9 It is a schematic diagram of the gluing mechanism of the present invention.

[0025] Fig.10 It is a schematic diagram of the overall structure of the pre-coated fixture of the present invention.

[0026] Fig.11 It is a schematic diagram of the bracket and lifting rod of the present invention.

[0027] Fig.12 It is a specific schematic diagram of the top of the workbench of the present invention.

[0028] Fig.13 It is a schematic diagram of the structure of the clamping member of the present invention.

[0029] Fig.14 It is a schematic diagram of the structure of the limiting component of the present invention.

[0030] Fig.15It is a schematic diagram of the structure when the limit pin and the sleeve of the present invention cooperate.

[0031] Fig.16 It is a schematic diagram of the weighing and thickness detection assembly of the present invention.

[0032] Fig.17 It is a schematic diagram of a workbench for sticking double-sided tape on a material plate of the present invention.

[0033] Fig.18 It is a schematic structural diagram of the vacuum adsorption device of the present invention.

[0034] Fig.19 It is a schematic structural diagram of the hot stamping machine of the present invention.

[0035] In the figure: 1. workbench; 2. glue coating mechanism; 201. glue coating roller; 202. glue chamber; 203. limit roller; 204. frame; 205. screw 2; 206. transmission component; 207. knob; 3. conveying mechanism; 301. conveying roller; 302. driving device; 303. support frame; 4. adjusting device; 401. telescopic member; 402. baffle; 403. screw 1; 404. handle; 405. transmission component; 5. material plate; 6. workbench; 7. clamping member; 701. clamping part; 702. rotating shaft; 8. lifting rod; 801. upper steel rod; 802. limit screw; 803. lower steel rod; 9. base Seat; 10. Bracket; 11. Working frame; 12. Foot switch; 13. Driving component; 14. Boss; 15. Limiting assembly; 1501. Limiting pin; 16. Fixing ring; 17. Limiting groove; 18. Sleeve; 19. Pick; 20. Bevel; 21. Operating table; 22. Electronic scale; 23. Thickness measuring assembly; 24. Barcode printer; 25. Double-sided film; 26. Vacuum adsorption device; 2601. Moving mechanism; 2602. Adsorption tooling; 2603. Powerful fan; 27. Hot stamping machine; 2701. Servo system; 2702. Upper hot stamping structure; 2703. Lower hot stamping mold; 2704. Moving structure. DETAILED DESCRIPTION

[0036] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0037] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present application.

[0038] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0039] One of the preferred embodiments of the present application is as follows: Figures 1 to 19 As shown, a production system for leather overmolding of airbag cover surface includes a plurality of workstations, and adjacent workstations are connected and matched in sequence, such as Figure 1 As shown in the figure, after multiple stations are coordinated, the overall structure is in a "U" shape, which is convenient for transmission and coordination between stations. Semi-automatic equipment is used in the stations, and through the coordination and cooperation of the staff, the entire production line production process of the airbag cover and leather can be realized, which greatly improves production efficiency and reduces production costs.

[0040] In order to facilitate the understanding of the process flow of the entire production line, the following describes them one by one: 1. Leather cutting station A ① Equipment name: cutting machine (not shown). ② Equipment type: labeling machine. ③ Equipment brand: Emma. ④ Equipment model: S2-5716-P.

[0041] It only needs one staff member to cut the leather according to the computer-programmed pattern, with high cutting accuracy and fast speed. Of course, it needs to meet the specified cutting standards: the weight consistency after cutting is ±0.2 g; the incision is clear without burrs, the grain direction is consistent, and the outer surface is not damaged, dirty, or other appearance defects.

[0042] Furthermore, the leather should be inspected after cutting, so a detection station can be set after this station, such as Fig.16 As shown in the right figure in the figure, the purpose is to ensure that the quality of leather cutting meets the subsequent covering requirements. Specifically, the leather can be placed on the operating table 21, and then the thickness of the leather is measured by the sensor in the thickness measuring component 23, and the leather is placed on the electronic scale 22 to measure its weight; and the thickness measuring component 23 and the electronic scale 22 are both devices known to those skilled in the art.

[0043] Furthermore, a barcode printer 24 can be installed on the operating table 21, that is, to code the leather before weighing and measuring the thickness, so that the leather is marked, so that the data in each step can be recorded in the subsequent computer by scanning the code. In the case of scanning the code for recording, such a working method (mode) can also be set to prevent the staff from transporting the leather that does not meet the standards to the next process. For example: assuming that the thickness of the leather measured does not meet the standards, if the staff cannot scan the leather and put it into the recycling box, then the thickness measuring component 23 will be in an unusable state; only after the staff scans the leather that does not meet the standards and puts it into the recycling box, the thickness measuring component 23 can be restored to normal use, thereby greatly ensuring the production quality of the product.

[0044] It should be noted that the above method is not only applicable to the thickness measurement and weighing process, but also can be used in the subsequent testing process, thereby greatly reducing the defective rate of the product. Of course, the above control method is automatically controlled by a (PLC) controller, and the control circuit can be realized by programming by technicians in this field, which belongs to the common knowledge in this field, so this application document will not explain the control method and circuit connection in detail.

[0045] 2. Gluing Station B It is mainly completed by hot melt glue coating device (referred to as glue coating device) on the surface of automobile interior parts, such as Figures 2 to 9 As shown, the glue coating device includes a workbench 1, a gluing mechanism 2, a conveying mechanism 3 and an adjusting device 4, wherein the gluing mechanism 2 is installed above the workbench 1, the conveying mechanism 3 is installed on the workbench 1 and cooperates with the gluing mechanism 2 to form a gluing area, and the adjusting device 4 is installed on the workbench 1 and is connected and cooperated with the conveying mechanism 3.

[0046] It is understandable that when gluing, the product (ie leather) is placed on the workbench 1, and the conveying mechanism 3 can convey the product, and the gluing mechanism 2 will gluing the product during the conveying process. When adjusting, the adjusting device 4 can drive the conveying mechanism 3 to be raised and lowered, so that the distance between the conveying mechanism 3 and the gluing mechanism 2 will change, that is, the gluing area can be adjusted to adapt to products of different thicknesses, which greatly improves the flexibility and convenience of the device.

[0047] The present application does not specifically limit the structure of the conveying mechanism 3, and a specific embodiment is provided below for reference: like Figure 7As shown, the conveying mechanism 3 includes a conveying roller 301, a driving device 302 and a support frame 303. The support frame 303 is horizontally rotatably installed on the workbench 1 and is connected to the adjusting device 4. The conveying roller 301 is horizontally rotatably installed on the support frame 303 and cooperates with the gluing mechanism 2 to form a gluing area. The driving device 302 is installed on the support frame 303 and the output end is connected to the conveying roller 301.

[0048] It is understood that during transportation, the driving device 302 can drive the conveying roller 301 to rotate, so that the product on the conveying roller 301 can be transported under the action of friction. The driving device 302 is preferably a motor. Of course, in order to reduce the stress concentration on the support frame 303, such as Figure 6 As shown, the conveying roller 301 and the motor may be installed separately, and the two may be connected in cooperation with each other by a belt drive (or a chain drive).

[0049] During adjustment, the adjusting device 4 can drive the support frame 303 to rotate along the workbench 1, and the rotating support frame 303 can drive the conveying roller 301 to be raised and lowered in the up and down directions to adapt to products of different thicknesses.

[0050] In this embodiment, Figure 7 and Figure 8 As shown, the adjusting device 4 includes a telescopic member 401, which is hingedly mounted on the workbench 1, and the piston end of the telescopic member 401 is hingedly connected to the support frame 303. It can be understood that when the telescopic member 401 is extended or shortened, the support frame 303 can be driven to rotate and adjust. Of course, the specific structure and working principle of the telescopic member 401 are well-known technologies for those skilled in the art, so they are not elaborated in detail here; common telescopic members 401 include hydraulic cylinders, pneumatic cylinders, and linear motors, etc., and those skilled in the art can choose them according to actual needs.

[0051] Based on the above embodiment, inaccurate adjustment may occur during adjustment. Especially for multiple products with similar thickness dimensions, adjustment only by micro-expansion of the telescopic member 401 is not accurate enough. Moreover, we know that the telescopic member 401 is hingedly installed, and thus the supporting and limiting effect of the support frame 303 is not good enough.

[0052] In order to solve the above technical problems, this embodiment is further optimized: Figure 7 As shown, the adjusting device 4 also includes a baffle 402 and a lead screw 403 . The baffle 402 is vertically slidably installed on the workbench 1 , and the lead screw 403 is vertically rotatably installed on the workbench 1 and cooperates with the baffle 402 .

[0053] It is understandable that when making adjustments, first rotate the lead screw 403, which can drive the baffle 402 to adjust up and down, and adjust the baffle 402 to a suitable height; then rotate the support frame 303 upward through the telescopic member 401 until the support frame 303 abuts against the baffle 402, so that the top of the support frame 303 is limited by the baffle 402, and its bottom is limited by the telescopic member 401, so that the position of the conveying roller 301 after adjustment can be further improved to be stably limited and locked. On the other hand, we know that the adjustment of the threaded lead screw has high precision, which can indirectly achieve fine-tuning and limiting of the height of the conveying roller 301, thereby greatly improving the accuracy of adjusting the glue coating area.

[0054] Specifically, the baffle 402 can adopt an "L"-shaped structure, that is, the baffle 402 includes a horizontal section and a vertical section that are integrally formed and perpendicular to each other, the horizontal section cooperates with the support frame 303, and the vertical section cooperates with the lead screw 403.

[0055] Furthermore, in order to make it more convenient for the staff to rotate the screw 403, the adjustment device 4 also includes a handle 404 and a transmission assembly 405. The handle 404 is vertically rotatably installed at a suitable position of the workbench 1 (i.e., a position convenient for the staff to operate), and the handle 404 is connected to the screw 403 through the transmission assembly 405 (such as belt drive or chain drive), so that the staff can rotate the screw 403 at a convenient position.

[0056] In one of the embodiments of the present application, Fig. 9 As shown, the gluing mechanism 2 includes a glue chamber 202, a glue roller 201 and a pair of limiting rollers 203. The glue chamber 202 can be installed at a position above the workbench 1 through a fixed frame, and the glue roller 201 is rotatably installed at the unloading port at the bottom end of the glue chamber 202, and the glue roller 201 cooperates with the conveying roller 301 to form a gluing area. The limiting rollers 203 are symmetrically installed on both sides of the bottom end of the glue chamber 202 with the glue roller 201 as the center and cooperate with the glue roller 201.

[0057] It is understandable that the melted glue can be kept warm in the glue chamber 202 by a heating component (such as a heating wire or a heating rod), and the conveying roller 301 can be driven by a motor to rotate, thereby bringing out the glue at the discharge port and coating it on the product.

[0058] Specifically, Fig. 9As shown, there is a gap between the glue coating roller 201 and the right limiting roller 203, and the gap represents the amount of glue coating. In order to achieve the adjustability of the amount of glue coating, the glue coating mechanism 2 also includes a second screw 205 and a frame 204, wherein one (i.e. the right) limiting roller 203 is rotatably mounted on the frame 204, the frame 204 is horizontally slidably mounted on the glue chamber 202, and the second screw 205 is horizontally rotatably mounted on the glue chamber 202 and cooperates with the frame 204.

[0059] It is understandable that when the staff rotates the lead screw 205, the lead screw 205 acts on the frame 204 to move, thereby driving the limit roller 203 to move horizontally, so that the gap between the limit roller 203 and the glue coating roller 201 can be adjusted, thereby achieving the control of the glue coating amount. In order to facilitate the rotation of the lead screw 205, similar to the lead screw 1 403, the glue coating mechanism 2 also includes a knob 207 and a transmission component 206. The knob 207 is installed on the side of the glue chamber 202 through a rotating rod and is connected to the lead screw 205 through the transmission component 206 (such as a bevel gear transmission structure). It is understandable that the knob 207 can drive the lead screw 205 to rotate through the cooperation of the rotating rod and the transmission component 206 to achieve the adjustment of the gap.

[0060] The working principle of the glue coating device is: In order to facilitate the positioning of the leather for gluing, the back side (i.e., the non-glued surface) of the leather can be adhered to the material plate 5 before gluing. Fig.17 As shown, the double-sided film roll 25 can be unwound and attached to the material plate 5, and then the protective layer on the double-sided tape can be torn off, and then the leather can be attached to the double-sided tape on the material plate 5. The thickness of the material plate 5 is a fixed value, so the sum of the thickness of the material plate 5 and the leather is the thickness of the product. The thickness of the glue coating area is adjusted according to this thickness, as shown in FIG. Figure 5 As shown, the distance D between the glue coating roller 201 and the conveying roller 301 is adjusted, and the adjustment device 4 is used for adaptive adjustment; then the material feeding gap is adaptively adjusted according to the leather. Figure 3 As shown, the staff pushes the material sheet 5 along one side of the workbench 1 until one end thereof is inserted between the glue coating roller 201 and the conveying roller 301. The relative movement between the two rollers and the friction force enable the material sheet 5 to move through and perform the gluing operation. After the gluing is completed, the material sheet 5 will fall to the other side, at which time the staff on the other side can remove the glued material sheet 5.

[0061] Further, a detection station can be added to this station later. This detection station can be divided into two stations, specifically: ① Weighing and scanning station after glue rolling, that is, weighing and measuring the thickness again after glue coating. Its function is similar to the above-mentioned detection station after cutting, mainly for the detection of glue after glue coating. The specific process flow is: scan the leather QR code, weigh, PLC automatically calculates the weight of glue by the weight difference before and after the same barcode, and displays it on the PLC screen, and the upper and lower limits of the weight can be set on the PLC. If the weight equipment range is exceeded, the equipment will automatically alarm and beep. ② After glue coating, the leather defect detection station, of course, these two stations can be set on a work platform, and the equipment can use a UV ultraviolet light source detection device, which can irradiate the leather after glue coating, and use ultraviolet rays to reflect and fluoresce the glue and leather surface, so as to detect minor defects on the leather surface, uneven glue coating and other problems. Specifically, when ultraviolet rays are irradiated on leather, if there are defects in the leather or the glue is unevenly applied, these areas will produce different reflection or fluorescence effects on the ultraviolet rays, which will then be captured and recorded by the detection device. The detection device can greatly improve the detection accuracy of the leather glue coating quality and ensure the smooth progress of subsequent production.

[0062] 3. (Leather) Sewing Station C ① Equipment name: sewing machine (not shown). ② Equipment type: standard machine. ③ Equipment brand: Durkopp. ④ Equipment model: 887 and 868. Specifically, Durkopp 887 is used for leather stitching sewing, and Durkopp 868 is used for leather decorative stitching sewing. Specifically, the staff splices the leather, requiring the seams to be smooth, wrinkle-free, and the seams to be flat and beautiful.

[0063] 4. (Pre) Coating Station D This is mainly accomplished through the use of a leather pre-wrapping fixture for the airbag cover, such as Figures 10 to 15 As shown, it includes a workbench 6, a plurality of clamping members 7 and a plurality of limiting assemblies 15. A placement station for placing the airbag cover is provided at the top middle position of the workbench 6, and the clamping member 7 is rotatably installed at the side position of the workbench 6 through the first end (bottom end), and the second end (top end) of the clamping member 7 has a clamping portion 701. The limiting assembly 15 is installed on the workbench 6 and cooperates with the corresponding clamping member 7.

[0064] It is understandable that when the airbag cover is pre-wrapped and clamped, the airbag cover is first placed on the placement station on the workbench 6, and of course the placement station can limit the horizontal direction of the airbag cover; then the clamping part 701 of the clamping member 7 is rotated toward the airbag cover until it abuts against it, and the clamping part 701 abuts against the top position of the airbag cover, and finally the clamping member 7 is locked by the limiting component 15, so that the airbag cover can be fixed in the horizontal and vertical directions. Similarly, when the airbag cover is loosened, the clamping member 7 is first unlocked by the limiting component 15, and then the clamping member 7 is reversed and the clamping part 701 is moved away from the airbag cover, which is simple and convenient.

[0065] It can be seen that the airbag cover can be clamped and released by rotating the clamping member 7, and the clamping method is simple and quick. Compared with the mobile clamping and fixing method of the clamping part 701 in the prior art, the clamping member 7 in the present application has a larger avoidance space after rotation and release, thereby increasing the operating space of the leather covering and improving the work efficiency of the staff.

[0066] It should be noted that if Fig.12 As shown, a boss 14 is detachably installed (for example, bolted) at the middle of the top of the workbench 6, thereby forming the above-mentioned placement station; of course, the shape and size of the boss 14 are compatible with the airbag cover, and when dealing with different models of airbag covers, we only need to remove and replace the corresponding boss 14.

[0067] Furthermore, the number of the clamping members 7 is preferably three, such as Fig.12 As shown, the three clamping members 7 are located on the left side, right side and rear side of the workbench 6, and the front side is the operating side for the staff. This design is not only convenient for the staff to operate, but also the three clamping members 7 can stably clamp and fix the airbag cover.

[0068] The present application does not specifically limit the structure of the limit assembly 15, and a specific embodiment is provided below for illustration: like Fig.14 and Fig.15 As shown, the limiting assembly 15 includes a limiting pin 1501, which is movably arranged on the workbench 6. The bottom end of the clamping member 7 is rotatably mounted on the workbench 6 via a rotating shaft 702, and a fixing ring 16 is fixedly mounted on the outside of the rotating shaft 702, and a plurality of limiting grooves 17 are provided on the outside of the fixing ring 16.

[0069] It is understandable that when the clamp 7 rotates, the clamp 7 drives the rotating shaft 702 and the fixing ring 16 to rotate synchronously. When the clamp 7 abuts against the airbag cover, the limiting groove 17 corresponds to the limiting pin 1501. Then, the limiting pin 1501 is inserted into the limiting groove 17 to achieve the limiting locking of the clamp 7. Of course, there can be multiple limiting grooves 17. For example, after the clamp 7 is reversed and released, the clamp 7 can also be locked through the cooperation of the limiting pin 1501 and the limiting groove 17. This is to prevent the shaking of the clamp 7 from affecting the pre-wrapping process.

[0070] Furthermore, in order to ensure stability after limiting, the limit pin 1501 can be movably installed in the workbench 6 through an elastic member (such as a spring). When the clamp 7 is locked, the limit pin 1501 can be stably inserted into the limit groove 17 under the action of elastic force, thereby improving the stability of the clamp 7 after locking.

[0071] Based on the above embodiment, it should be known that when releasing the lock of the clamp 7, it is necessary to pull the limit pin 1501 to separate it from the limit slot 17, and the limit pin 1501 itself is limited by a spring, so it may be more laborious in the pulling process.

[0072] Therefore, in order to solve the above technical problems, in one embodiment of the present application, Fig.14 and Fig.15 As shown, a plurality of sleeves 18 are installed on the workbench 6 , and the sleeves 18 are sleeved on the outside of the corresponding limiting pins 1501 , and a paddle 19 is installed at the end of the limiting pin 1501 .

[0073] Specifically, Fig.15 As shown in (a) of FIG. 1 , a bevel slope 20 is provided on the outside of the sleeve 18. Of course, the bevel slope 20 has a slope bottom and a slope top. When the clamp 7 is locked, the paddle 19 cooperates with the slope bottom, as shown in FIG. Fig.15 When the clamping member 7 is unlocked, the staff only needs to rotate the limit pin 1501 through the paddle 19. During the rotation, the paddle 19 and the bevel slope 20 are wedge-shaped pressed together, so that the limit pin 1501 moves while rotating until it is away from the limit groove 17, so as to unlock the clamping member 7. Fig.15 As shown in (c) in FIG. 1 , it can be seen that the unlocking method of the present application is more labor-saving and convenient than the unlocking method of directly pulling the limit pin 1501 .

[0074] In one of the embodiments of the present application, Fig.11As shown, a base 9 is provided below the workbench 6, and the base 9 and the workbench 6 are connected by a lifting rod 8. The lifting rod 8 can adjust the height of the workbench 6 to adjust the height of the workbench 6 to adapt to the operation of workers of different heights and improve the comfort of operation.

[0075] Specifically, the lifting rod 8 includes a lower steel rod 803, an upper steel rod 801 and a limit screw 802. The lower steel rod 803 is vertically fixedly installed in the middle of the top of the base 9, the upper steel rod 801 is slidably arranged inside the lower steel rod 803, and the limit screw 802 is threadedly engaged with the upper end of the side of the lower steel rod 803. It can be understood that when adjusting, the upper steel rod 801 is slid up and down along the inside of the lower steel rod 803. When it slides to a suitable height, the limit screw 802 is tightened and abutted against the outside of the upper steel rod 801, so that the upper steel rod 801 can be locked. Of course, the lifting rod 8 can also be electric, but since it is not adjusted frequently, it is preferred to use the above-mentioned manual adjustment method.

[0076] Furthermore, in order to facilitate the leather covering of different positions of the airbag cover in the later stage, the workbench 6 can be installed at the movable end of the lifting rod 8 (i.e., the top of the upper steel rod 801) through the driving component 13, and the workbench 6 can be rotated and adjusted through the driving component 13. Specifically, the driving component 13 can be started by the foot switch 12, that is, the foot switch 12 is electrically connected to the driving component 13. When adjusting, the staff can start the workbench 6 to rotate the set angle by stepping on the foot switch 12. Of course, there are many ways to control the rotation, including but not limited to the following two: Method 1: By continuously stepping on the foot switch 12, the workbench 6 is continuously rotated, and the foot switch 12 is released when the workbench 6 is rotated to a suitable angle. Method 2: The airbag cover generally needs to be covered on all four sides, so the workbench 6 can be rotated 90 degrees as a set unit, that is, each time the foot switch 12 is stepped on, the workbench 6 rotates 90 degrees. In other words, each time the airbag cover is rotated, the side of the airbag cover is aligned with the front of the worker, and this fixed angle rotation method can improve work efficiency.

[0077] In this embodiment, Fig.10 As shown, the leather pre-wrapping fixture for the airbag cover also includes a bracket 10, which is located beside the workbench 6 and has a multi-layer structure. The bracket 10 can store items for wrapping, such as a knife, a hot air gun, etc., so that the staff can easily take them during the operation, thereby improving work efficiency.

[0078] Further, such as Fig.10As shown, a shadowless lamp (not shown) can be installed above the workbench 6 through the work frame 11. The shadowless lamp can evenly illuminate the workbench 6, so that when the safety airbag cover leather is pre-wrapped, the light is more sufficient to ensure the wrapping quality. The design of the shadowless lamp avoids the influence of shadows on the sight of the staff, making the operation more precise and reducing eye fatigue during operation.

[0079] 5. Vacuum activation (adsorption) station E Two devices may be provided in this station, namely a heating box (not shown) and a vacuum adsorption device 26. The specific process flow is as follows: first, the pre-wrapped airbag cover is placed in the heating box, and the glue coated on the leather is activated by heating conditions, so that the leather and the airbag cover are more closely attached. Then, the heated airbag cover is taken out and placed in the vacuum adsorption device 26, and the leather is further adsorbed and fixed under vacuum conditions, so as to ensure the firmness of the attachment between the leather and the airbag cover and avoid the leather from falling off during subsequent processing or use.

[0080] Specifically, Fig.18 As shown, the vacuum adsorption device 26 mainly includes a moving mechanism 2601, an adsorption tool 2602 and a powerful fan 2603, wherein the moving mechanism 2601 and the adsorption tool 2602 are installed on the operating platform and cooperate with each other, and the powerful fan 2603 is installed above the adsorption tool 2602. It can be understood that when adsorption is performed, the airbag cover is first placed on the moving mechanism 2601, and the product is moved to the adsorption tool 2602 by the moving mechanism 2601, and then the vacuum pump in the adsorption tool 2602 will adsorb the bottom position of the airbag cover, so that the leather and the airbag cover are closely fitted, and at the same time, the powerful fan 2603 blows air on the top of the airbag cover, so that it is quickly cooled and solidified, thereby improving the fit and firmness of the leather. It should be noted that the moving mechanism 2601 is also common knowledge known to those skilled in the art, for example, a pneumatic slide rail or a motor screw moving device can be used.

[0081] 6. (Logo) Hot Stamping Station F Mainly through the hot stamping machine 27 to complete, such as Fig.19As shown, the hot stamping machine 27 includes a servo system 2701, an upper hot stamping structure 2702, a lower hot stamping mold 2703 and a mobile structure 2704, wherein the servo system 2701 is installed at the top of the device housing, the upper hot stamping structure 2702 is located inside the housing and connected to the output end of the servo system 2701, the mobile structure 2704 is installed at the bottom of the housing, and the lower hot stamping mold 2703 is installed on the mobile structure 2704. It can be understood that when hot stamping, the airbag cover is first placed on the lower hot stamping mold 2703, and the product is moved to correspond to the upper hot stamping structure 2702 under the action of the mobile structure 2704, and then the upper hot stamping structure 2702 moves downward under the action of the servo system 2701 (such as a hydraulic cylinder) and performs hot stamping of the airbag cover (mainly car horn printing); the surface requirements after processing: no burns, yellowing, clear character outline shape, and no wire drawing phenomenon. It should be noted that the hot stamping machine 27 is also common knowledge known to those skilled in the art, so its specific structure and principle are not described in detail. For example, the moving structure 2704 can adopt the same structure as the moving mechanism 2601 mentioned above.

[0082] 7. (Sign) Punching Station G It is mainly completed by a punching machine (not shown). Of course, the punching machine is also common knowledge known to those skilled in the art, so it will not be described in detail. That is, the airbag cover is punched by a punching machine to facilitate the installation of objects such as identification plates on the airbag cover, as well as the installation of the airbag cover itself. The equipment needs to have the following functional requirements: ① The tooling has a quick change function, and the mold change time is ≤3min; ② The equipment can be compatible with more than five different types of tooling to achieve interchangeability; ③ The equipment has the function of recycling waste; ④ The punching size accuracy is + / -0.1mm; ⑤ There is no wrinkling or peeling around the periphery after punching, and it cannot affect the peeling force.

[0083] 8. Inspection Station H It is mainly for product peeling force detection and appearance inspection station (not shown), of course, including relevant peeling force detection tools. This station mainly detects the finished product of airbag cover leather to ensure product quality. The detection content mainly includes two aspects: one is peeling force detection, which uses professional peeling force detection tools to test the bonding strength between leather and airbag cover to ensure that the leather is not easy to fall off. The second is appearance inspection, in which the staff conducts a comprehensive inspection of the appearance of the product to ensure that there is no obvious bulging, wrinkling, flatness, damage, etc., and it meets the quality standards. After the inspection is completed, qualified products will enter the final packaging process, and unqualified products will need to be reworked or scrapped. This inspection station is an important link in the production process and is of great significance to ensuring product quality.

[0084] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A production system for leather overmolding of airbag cover surface, characterized in that: Including those that are matched in sequence and arranged in a U shape as a whole: A cutting station, wherein the cutting station is suitable for cutting the leather into a set shape; A gluing station, wherein the gluing station is suitable for applying glue to leather; A sewing station, wherein the sewing station is suitable for splicing leather; a wrapping station, wherein the wrapping station is suitable for pre-wrapping the airbag cover with leather; A vacuum activation station, which is suitable for heating the glue in the leather to activate it first, and then adsorbing and bonding the airbag cover to the leather under vacuum conditions; A hot stamping station, which is suitable for hot stamping a logo on leather; A punching station, wherein the punching station is suitable for punching holes in the airbag cover; as well as The inspection station is suitable for performing quality inspection on the wrapped safety airbag cover.

2. The airbag cover surface leather overmolding production system according to claim 1, characterized in that: The gluing station includes a glue coating device, which includes a workbench, a gluing mechanism, a conveying mechanism and an adjusting device. The gluing mechanism is installed above the workbench, the conveying mechanism is installed on the workbench and cooperates with the gluing mechanism to form a gluing area, and the adjusting device is installed on the workbench and connected to the conveying mechanism; the adjusting device is suitable for driving the conveying mechanism to perform lifting and lowering adjustments so that the gluing area can adapt to products of different thicknesses.

3. The airbag cover surface leather overmolding production system according to claim 2, characterized in that: The conveying mechanism includes a conveying roller, a driving device and a support frame. The support frame is horizontally rotatably installed on the workbench and is connected to the adjusting device. The conveying roller is horizontally rotatably installed on the support frame and cooperates with the gluing mechanism to form the gluing area. The driving device is installed on the support frame and the output end is connected to the conveying roller. When adjusting, the adjusting device is suitable for driving the support frame to rotate along the workbench, thereby realizing the lifting and lowering adjustment of the conveying roller.

4. The airbag cover surface leather overmolding production system according to claim 3, characterized in that: The adjusting device includes a telescopic member, a baffle and a lead screw 1, the telescopic member is hingedly mounted on the workbench, and the piston end of the telescopic member is hingedly mounted on the support frame; the baffle is vertically slidably mounted on the workbench, and the lead screw 1 is vertically rotatably mounted on the workbench and cooperates with the baffle; when adjusting, the lead screw 1 is rotated to drive the baffle to adjust its height, and the support frame is suitable for rotating under the drive of the telescopic member until it abuts against the baffle, so as to achieve a limit lock on the conveying roller.

5. The airbag cover surface leather overmolding production system according to claim 4, characterized in that: The glue coating mechanism includes a glue chamber, a glue coating roller and a pair of limiting rollers, the glue chamber is installed above the workbench, the glue coating roller is rotatably installed at the feeding port at the bottom end of the glue chamber, and the glue coating roller cooperates with the conveying roller to form the glue coating area, and the limiting roller is symmetrically installed on both sides of the bottom end of the glue chamber with the glue coating roller as the center and cooperates with the glue coating roller; The glue coating mechanism also includes a second lead screw and a frame, wherein one of the limit rollers is rotatably installed on the frame, the frame is horizontally slidably installed on the glue chamber, and the second lead screw is horizontally rotatably installed on the glue chamber and cooperates with the frame; the second lead screw is rotated to drive the limit roller to move horizontally, thereby adjusting the feeding gap between the limit roller and the glue coating roller.

6. The airbag cover surface leather overmolding production system according to any one of claims 1 to 5, characterized in that: The wrapping station includes a tooling fixture for pre-wrapping leather of an airbag cover, which includes: a workbench, a plurality of clamping members, and a plurality of limiting assemblies, wherein the middle portion of the workbench has a placement station for placing the airbag cover, the clamping member is rotatably mounted on the workbench through a first end, the second end of the clamping member has a clamping portion, and the limiting assembly is mounted on the workbench and cooperates with the corresponding clamping member; When clamping, the clamping member is suitable for rotating until the clamping portion abuts against the airbag cover, and the limiting assembly is suitable for locking the clamping member; when loosening, the limiting assembly is suitable for releasing the lock on the clamping member, and then the clamping member is suitable for reversing and moving the clamping portion away from the airbag cover.

7. The airbag cover surface leather overmolding production system according to claim 6, characterized in that: The limiting assembly includes a limiting pin, which is movably arranged on the workbench; a fixing ring is installed outside the rotating shaft at the first end of the clamping member, and a plurality of limiting grooves are provided on the outer side of the fixing ring; when the limiting pin cooperates with the limiting groove, the clamping member can be locked.

8. The airbag cover surface leather overmolding production system according to claim 7, characterized in that: The limit pin is movably mounted on the workbench through an elastic member; when the clamping member is locked, the limit pin is suitable for cooperating with the limit groove under the action of elastic force.

9. The airbag cover surface leather overmolding production system according to claim 8, characterized in that: A plurality of sleeves are installed on the workbench, and the sleeves are sleeved on the corresponding outer sides of the limit pins. The ends of the sleeves are provided with an oblique slope, and the oblique slope has a slope bottom and a slope top. The ends of the limit pins are provided with a paddle. When the clamp is locked, the paddle is adapted to cooperate with the bottom of the slope; when the clamp is unlocked, the limit pin is adapted to be rotated by the paddle, and then the limit pin is adapted to move under the wedge-shaped extrusion cooperation between the paddle and the bevel slope until it is away from the limit groove.

10. The airbag cover surface leather overmolding production system according to claim 9, characterized in that: A base is provided below the workbench, and the base and the workbench are connected via a lifting rod; the workbench is installed on the movable end of the lifting rod via a driving component, and the driving component is suitable for rotating and adjusting the workbench; The leather pre-wrapping fixture for the airbag cover also includes a foot switch, which is electrically connected to the driving component; the driving component is suitable for driving the workbench to rotate a set angle under the action of the foot switch.

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