An apparatus for assembling a combination self-tapping screw

Abstract

The present application relates to the technical field of self-tapping screw, in particular to an equipment for assembling combined self-tapping screw, which comprises a combined washer mechanism for combining multiple washers, a screw mechanism for feeding self-tapping screws and an assembling mechanism for assembling the combined multiple washers and the fed self-tapping screws into combined self-tapping screw. According to the present application, multiple washers are combined together in the combined washer mechanism, self-tapping screws are fed from the screw mechanism, and then the self-tapping screws and the combined multiple washers are assembled together by the assembling mechanism. Compared with manual assembly, the assembling process saves manpower.

Description

Technical Field

[0001] This invention relates to the field of self-tapping screw technology, and more specifically, to a device for assembling and combining self-tapping screws. Background Technology

[0002] Self-tapping screws, also known as quick-thread screws, are quick-installing fasteners made of steel with a passivated galvanized surface. They are primarily used for connecting thin metal sheets (steel plates, saw blades, etc.). The connection process involves first drilling a threaded hole in the parts to be connected, and then screwing the self-tapping screw into that hole.

[0003] There are many types of self-tapping screws. With the development of production and the advancement of technology, new materials, new structures, and new thread forms are constantly emerging, and new types of self-tapping screw products are also constantly appearing. The main classifications of existing self-tapping screws are ordinary self-tapping screws, self-cutting self-tapping screws, self-drilling self-tapping screws, self-extruding self-tapping screws, metal drive screws, wall panel self-tapping screws, and combination self-tapping screws.

[0004] Combination self-tapping screws are a combination of ordinary self-tapping screws, self-cutting self-tapping screws, self-drilling self-tapping screws, etc., with washers such as flat washers and elastic washers (including spring washers and elastic locking washers). The function of the flat washer is to increase the force-bearing surface of the screw and eliminate the damage of the spring washer to the machine surface. The spring washer is to prevent the screw from loosening and to play a certain role in buffering protection when under force. Some combination washers also include red steel paper washers to form combination self-tapping screws. Red steel paper washers are usually used for sealing work in harsh environments such as high temperature and high pressure. They are a type of gasket material made of special fiber materials and red steel fiber paper through high temperature hot pressing and coating with special lubricating materials.

[0005] During assembly, the spring washer, flat washer, and red washer are sequentially inserted into the self-tapping screw. The spring washer is between the flat washer and the nut, and the red washer is on the outside and in contact with the machine. Currently, most production lines for assembling self-tapping screws use manual assembly, where the spring washer, flat washer, and red washer are manually inserted into the self-tapping screw. The drawback of this assembly method is that the assembly speed is slow, the efficiency is low, and the manpower is consumed. Therefore, there is an urgent need for a device that can assemble the spring washer, flat washer, and red washer with the self-tapping screw. Summary of the Invention

[0006] The purpose of this invention is to provide a device for assembling self-tapping screws, which can replace manual assembly of washers and self-tapping screws, thus saving manpower.

[0007] This invention is achieved through the following technical solution:

[0008] An assembly device for assembling combined self-tapping screws includes a combination washer mechanism for combining multiple washers, a screw mechanism for cutting self-tapping screws, and an assembly mechanism for assembling the combined multiple washers and the cut self-tapping screws into a combined self-tapping screw.

[0009] The above technical solution combines multiple washers in a combined washer mechanism, cuts self-tapping screws from the screw mechanism, and then assembles the self-tapping screws and the combined washers together through an assembly mechanism. The assembly process saves manpower compared to manual assembly.

[0010] To better realize the present invention, the combined gasket mechanism further includes multiple gasket vibrating disks and a combined guide column. The discharge ends of the multiple gasket vibrating disks are all connected to the combined guide column. The combined guide column is provided with multiple gasket channels. A through hole is provided at the bottom of the guide column. A spring with its top extending to the through hole is provided on one side of the through hole. The spring is used to support the multiple gaskets and position the center hole coaxially.

[0011] Through the above technical solution, multiple gaskets enter the combined guide column in an orderly manner under the action of the gasket vibrating plate. After passing through the gasket channel, the combined guide column falls onto the perforated spring at the bottom, supporting the multiple gaskets and arranging them coaxially, which facilitates subsequent assembly.

[0012] To better realize the present invention, the assembly mechanism further includes a material picking component and an assembly component. The material picking component is used to remove the combined gasket after the combined guide column is assembled and send it to the assembly component for assembly. The assembly component includes a second cylinder, and the telescopic end of the second cylinder is provided with an assembly plate. The assembly plate is provided with an assembly base, and the assembly base has mounting holes.

[0013] Through the above technical solution, the material picking component of the assembly mechanism removes the combined gasket after the combined guide column is assembled and sends it to the assembly component for assembly. The second cylinder of the assembly component drives the mounting holes on the assembly plate and the assembly base to move back and forth between the combined gasket feeding position and the self-tapping screw feeding position, combining the combined gasket and the self-tapping screw together and assembling them through the assembly component. This plays a connecting role between the combined gasket mechanism and the screw mechanism, combining the two together to facilitate subsequent assembly.

[0014] To better realize the present invention, the screw mechanism further includes a self-tapping screw vibratory feeder, the discharge end of which is connected to a feeding guide tube, which is used to guide the self-tapping screw to the mounting hole.

[0015] Through the above technical solutions, the screw mechanism guides the self-tapping screw from the feeding guide to the mounting hole, which facilitates subsequent assembly with the combination washer.

[0016] To better realize the present invention, the material handling component further includes a support plate, on which a lifting cylinder is installed. The telescopic end of the lifting cylinder is connected to a tilting cylinder. The tilting cylinder is provided with a transverse cylinder. The telescopic end of the transverse cylinder is provided with a through rod. The through rod passes through the through hole at the bottom of the combined guide column as the transverse cylinder moves back and forth, and puts together multiple gaskets arranged in the through hole.

[0017] Through the above technical solutions, the lifting cylinder drives the through rod to rise and fall, the lateral cylinder drives the through rod to move back and forth, and the tilting cylinder drives the through rod to rotate up and down, so that the through rod passes through multiple pads and then rotates downwards to the mounting hole below for the next assembly step.

[0018] To better realize the present invention, a first cylinder is further provided on the tilting cylinder. The extension and retraction end of the first cylinder is provided with a protective pad. The protective pad has a hole near the through rod, so that the front end of the protective pad can pass through the through rod to block or release the pad on the through rod under the extension and retraction action of the first cylinder.

[0019] Through the above technical solutions, the protective pads can block or release multiple pads on the through rod. When blocked, the multiple pads will not slip out when the rotating cylinder rotates the through rod. When released, the multiple pads on the through rod will automatically slide out of the through rod.

[0020] To better realize the present invention, the assembly plate is further provided with a telescopic clamping cylinder, and the telescopic end of the telescopic clamping cylinder is provided with a clamping ring. The telescopic clamping cylinder is used to move the clamping ring closer to or away from the mounting hole and to open or close the clamping ring.

[0021] Through the above technical solutions, the telescopic clamping cylinder is used to move the clamping ring closer to or away from the mounting hole, and to open or close the clamping ring, thereby preventing the multiple gaskets on the mounting hole from shifting during assembly.

[0022] To better realize the present invention, the bottom end of the feeding guide tube has an alignment tube that aligns with the mounting hole on the assembly base. A third cylinder is provided above the second cylinder. A fixing plate is provided at the telescopic end of the third cylinder. A drive motor is provided on the fixing plate. A rotating screw is provided at the output end of the drive motor. The end of the rotating screw passes through the alignment tube and rotates the self-tapping screw coming down from the feeding guide tube through the center hole of multiple washers, so that multiple washers and self-tapping screws are combined together.

[0023] The above technical solution involves rotating a screw to rotate the self-tapping screw coming down from the feeding guide through the center hole of multiple washers, thereby assembling multiple washers and self-tapping screws together.

[0024] To better realize the present invention, an ejector cylinder is provided on one side of the assembly plate for ejecting the assembled self-tapping screw after the combined gasket and self-tapping screw are assembled and the clamping ring is opened and retracted. An ejector outlet communicating with the mounting hole is provided on the assembly plate on the other side away from the ejector cylinder. A collection frame is provided on the side of the assembly plate near the ejector outlet to collect the ejected self-tapping screw.

[0025] With the above technical solution, after the combined washer and self-tapping screw are assembled and the clamping ring is opened and retracted, the ejector cylinder ejects the assembled self-tapping screw, which is then ejected from the top outlet and collected in the collection frame.

[0026] To better realize the present invention, the device further includes a detection device, which includes magnetic switches on the first cylinder, the second cylinder, the third cylinder, the lifting cylinder, the tilting cylinder, the lateral movement cylinder, the telescopic clamping cylinder, and the ejection cylinder. A photoelectric switch is provided on the combined guide column, and a metal proximity switch is provided on the feeding guide tube. The photoelectric switch and the metal proximity switch are signal connected to the magnetic switch.

[0027] Through the above technical solutions, photoelectric switches, metal proximity switches, and magnetic switches transmit signals between the parts of the entire equipment, facilitating the automatic and intelligent operation of the entire equipment and improving assembly speed and production efficiency.

[0028] The beneficial effects of this invention are:

[0029] 1. Multiple washers are assembled together in the combined washer mechanism. The self-tapping screw is cut from the screw mechanism and then assembled with the assembled multiple washers through the assembly mechanism. The assembly process saves manpower compared to manual assembly.

[0030] 2. The spring installed at the bottom of the combined guide column not only supports the multiple shims, but also positions the center holes of the multiple shims to be coaxial, so that the rod can pass through all the center holes of the multiple shims.

[0031] 3. Adjust the height of the rotating screw by extending and retracting the third cylinder. Then, driven by the drive motor, the rotating screw rotates and passes the self-tapping screw through the multiple washers below, thereby assembling the combined washers and self-tapping screws together. Attached Figure Description

[0032] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the present invention will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This invention provides a schematic diagram of an automatic assembly and combination device for self-tapping screws;

[0034] Figure 2 This is a side view of the combined guide column provided by the present invention;

[0035] Figure 3 This is a front view schematic diagram of the combined guide column provided by the present invention;

[0036] Figure 4 This is a schematic diagram of the material handling component provided by the present invention;

[0037] Figure 5 A schematic diagram of the first cylinder and the transverse sliding rod provided by the present invention;

[0038] Figure 6 This is a schematic diagram of the second cylinder and assembly plate provided by the present invention;

[0039] Figure 7 This is a top view of the second cylinder and assembly plate provided by the present invention;

[0040] Figure 8 This is a schematic diagram of the rotating screw and alignment tube provided by the present invention.

[0041] Icons: 1-Combined gasket mechanism, 11-Spring gasket vibratory feeder, 12-Flat gasket vibratory feeder, 13-Red gasket vibratory feeder, 14-Combined guide column, 141-Spring gasket channel, 142-Flat gasket channel, 143-Red gasket channel, 144-Photoelectric switch, 15-Perforation, 16-Spring, 2-Screw mechanism, 21-Self-tapping screw vibratory feeder, 22-Discharge guide tube, 23-Alignment tube, 24-Metal proximity switch, 3-Assembly mechanism, 31-Material handling assembly, 311-Lifting cylinder, 312- 313-Tilting cylinder, 314-Through rod, 315-First cylinder, 316-Ward pad, 317-Support plate, 32-Assembly component, 321-Second cylinder, 322-Assembly plate, 323-Assembly base, 324-Mounting hole, 325-Third cylinder, 326-Fixing plate, 327-Drive motor, 328-Rotating screw, 329-Telescopic clamping cylinder, 330-Clamping ring, 331-Ejection cylinder, 332-Ejection outlet, 333-Collection frame. Detailed Implementation

[0042] The technical solutions of the present invention will now be described with reference to the accompanying drawings.

[0043] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] Please refer to Figure 1-8 , Figure 1-8This invention provides a diagram of an automatic assembly device for self-tapping screws. The device includes a combination washer mechanism 1, a screw mechanism 2, and an assembly mechanism 3. The combination washer mechanism 1 includes multiple washer vibrating discs. In this device, the multiple washer vibrating discs are used to combine multiple washers together. This application uses spring washers, flat washers, and red washers with self-tapping screws as examples of combination washers, i.e., the multiple vibrating discs are spring washer vibrating disc 11, flat washer vibrating disc 12, and red washer vibrating disc 13. Of course, other washers can also be combined according to actual needs, and are not limited to the above three types of washers.

[0045] A vibratory feeder, a current technology, is an auxiliary feeding device for automated assembly or processing machinery. A pulse electromagnet sits beneath the hopper, causing it to vibrate vertically. Inclined spring plates drive the hopper to oscillate around its vertical axis. Parts inside the hopper rise along a spiral track due to this vibration. During this ascent, they undergo a series of selections or posture changes along the track, allowing them to automatically enter the assembly or processing position in a uniform state according to assembly or processing requirements. Its purpose is to automatically and orderly align disordered workpieces through vibration, accurately conveying them to the next process. The vibratory feeder consists of: a hopper, a chassis, a controller, a linear feeder, a storage bin, and a photoelectric sensing system.

[0046] The spring pad vibratory plate 11, the flat pad vibratory plate 12, and the red pad vibratory plate 13 all have discharge guide grooves at their discharge ends. That is, the three vibratory plates have spring pad discharge guide grooves, flat pad discharge guide grooves, and red pad discharge guide grooves, respectively. The ends of the three discharge guide grooves all point to the same place. That is, a combined guide column 14 is connected to the end of the three discharge guide grooves. The combined guide column 14 is used to arrange the multiple pads discharged from the multiple vibratory plates together in the order on the self-tapping screws.

[0047] The combined guide column 14 has multiple gasket channels, each connecting from the top to the bottom. These channels correspond to multiple vibratory feeder discharge guide grooves. Specifically, the combined guide column 14 contains a spring gasket channel 141, a flat gasket channel 142, and a red gasket channel 143. A through-hole 15 is located at the bottom of the guide column, horizontally penetrating the spring gasket channel 141, flat gasket channel 142, and red gasket channel 143, with its bottom open. A spring 16, corresponding to each gasket channel, is located on one side of the through-hole 15. One end of each spring 16 is fixed to the combined guide column 14, while the other end extends into the through-hole 15, providing support for the falling gaskets and ensuring the gaskets are properly aligned. The core holes are on the same axis, meaning the height of the tops of the multiple springs 16 is set according to the diameter of the pads. For example, the distance between the center hole of the flat pad and its edge is less than the distance between the center hole of the red pad and its edge. In this case, the height of the top of the spring 16 below the red pad channel 143 is lower than the height of the top of the spring 16 below the flat pad channel 142. The height difference between the tops of the two springs 16 is the same as the difference between the distance between the center hole of the flat pad and its edge and the distance between the center hole of the red pad and its edge. The spring 16 has a small elasticity and mainly plays a role in providing slight support and positioning on the same axis when the corresponding pad falls from the pad channel to the bottom of the combined guide column 14. The slight support of the spring 16 means that under a slight force, the multiple pads can be compressed and removed by pressing the spring 16 downwards.

[0048] The screw mechanism 2 has a self-tapping screw vibratory feeder 21, which works on the same principle as the vibratory feeder in the combined washer mechanism 1. The discharge guide groove at the discharge end of the self-tapping screw vibratory feeder 21 is connected to a feeding guide 22. The self-tapping screws are automatically and orderly oriented and discharged from the feeding guide 22 through the vibratory feeder. When installing the equipment, the assembly mechanism 3 can be installed between multiple washer vibratory feeders and self-tapping screw vibratory feeders 21 to save space.

[0049] Assembly mechanism 3 includes a material picking component 31 and an assembly component 32. The material picking component 31 is used to remove the combined gasket after the combined guide column 14 is assembled and send it to the assembly component 32 for assembly. Specifically, the material picking component 31 includes a lifting component, a lateral moving component, and a rotating component. The lifting component, lateral moving component, and tilting component can all be cylinders or hydraulic cylinders. Cylinders or hydraulic cylinders are existing technologies and will not be described in detail here. That is, the material picking component 31 includes a lifting cylinder 311 mounted on the support plate 317. The telescopic end of the lifting cylinder 311 is connected to a tilting cylinder 3. 12. A transverse cylinder 313 is provided on the tilting cylinder 312. A through rod 314 is provided at the telescopic end of the transverse cylinder 313. The through rod 314 passes through the through hole 15 at the bottom of the combined guide column 14 under the action of the forward and backward movement of the transverse cylinder 313, and passes through the multiple pads arranged in the through hole 15 together. The multiple pads are moved downward by the lifting cylinder 311. Then, the tilting cylinder 312 rotates downward by 90°, so that the through rod 314 is vertical downward, and the multiple pads slide out automatically from the through rod 314.

[0050] Preferably, the tilting cylinder 312 is further provided with a first cylinder 315 to prevent multiple pads on the through rod 314 from sliding out of the through rod 314 when the tilting cylinder 312 rotates downward. The telescopic end of the first cylinder 315 is provided with a protective pad 316. The protective pad 316 has a hole near the through rod 314 so that the front part of the protective pad 316 can pass through the through rod 314 under the telescopic action of the first cylinder 315 to block the pads on the through rod 314 and prevent the pads from sliding out. When the through rod 314 is rotated downward vertically, the telescopic end of the first cylinder 315 retracts the protective pad 316, and then the multiple pads slide out automatically.

[0051] Assembly component 32 includes a second cylinder 321. The telescopic end of the second cylinder 321 is provided with an assembly plate 322. The assembly plate 322 is provided with an assembly base 323. The assembly base 323 has mounting holes 324. The second cylinder 321 drives the mounting holes 324 on the assembly plate 322 to telescopically move between the through rod 314 and the feed guide 22. After the flipping cylinder 312 rotates the through rod 314 downward vertically, the first cylinder 315 drives the protective pads 316 to retract. Multiple pads automatically slide down the through rod 314 onto the assembly base 323 corresponding to the mounting holes 324. Then, the second cylinder 321 drives the assembly plate 322 back below the feed guide 22. The self-tapping screws on the feed guide 22 penetrate into the center holes of multiple pads, so that multiple pads and self-tapping screws are combined together.

[0052] The bottom end of the feeding guide tube 22 has a vertical alignment tube 23, which is used to align with the mounting hole 324 on the assembly base 323. The alignment tube 23 has openings at both the top and bottom. A third cylinder 325 is provided above the second cylinder 321. A fixing plate 326 is provided at the telescopic end of the third cylinder 325. A drive motor 327 is provided on the fixing plate 326. A rotating screw 328 is provided at the output end of the drive motor 327. The end of the rotating screw 328 passes through the opening at the top of the alignment tube 23. The height is adjusted by the third cylinder 325, and the self-tapping screw coming down from the feeding guide tube 22 is rotated through the center hole of multiple washers by the drive motor 327, so that multiple washers and self-tapping screws are combined together. Preferably, the drive motor 327 and the rotating screw 328 can also be replaced by an electric screwdriver, i.e., an electric screwdriver.

[0053] The assembly plate 322 is equipped with a telescopic clamping cylinder 329. The telescopic end of the telescopic clamping cylinder 329 is equipped with a clamping ring 330. The clamping ring 330 is composed of two semi-rings that can be opened at one end. After the telescopic clamping cylinder 329 telescopically extends or moves away from the combined gasket on the mounting hole 324, the clamping ring 330 of the telescopic clamping cylinder 329 opens and wraps around the combined gasket, and then retracts to clamp around the combined gasket, preventing the gasket from shifting when the self-tapping screw rotates through multiple gaskets. After the rotating screw 328 rotates the self-tapping screw into the center hole of the combined gasket, the clamping ring 330 opens and retracts, so that the combined gasket and the self-tapping screw are exposed after assembly.

[0054] An ejector cylinder 331 is provided on one side of the assembly plate 322. The telescopic end of the ejector cylinder 331 passes through the assembly plate 322 and corresponds to the mounting hole 324. After the combined gasket and self-tapping screw are assembled and the clamping ring 330 retracts, the assembled self-tapping screw is ejected by the ejector cylinder 331. In order to facilitate the ejector cylinder 331 to eject the self-tapping screw, an outlet 332 communicating with the mounting hole 324 is provided on the assembly plate 322 on the other side away from the ejector cylinder 331. The self-tapping screw is ejected from the mounting hole 324 by the ejector cylinder 331 through the outlet 332. A collection frame 333 is provided on the side of the assembly plate 322 near the outlet 332 to collect the ejected self-tapping screw. After a certain amount is collected, the screw is taken out.

[0055] In summary, this invention provides an automatic assembly device for self-tapping screws. Multiple vibratory feeders automatically and systematically feed the assembly washers and self-tapping screws. First, after the assembly washers are fed, they pass through the through-hole 15 of the assembly guide column 14. The transverse cylinder 313 of the material handling component 31 drives the through-rod 314 through the center hole of the assembly washer. Under the action of the lifting cylinder 311, the through-hole 15 is moved downwards. After moving downwards, the first cylinder 315 extends to block the multiple washers with a protective pad 316 to prevent them from slipping out. Then, the flipping cylinder 312 drives the through-rod 314 to rotate downwards by 90°. The first cylinder 315 retracts the protective pad 316, and the multiple washers automatically slide out of the through-rod 314 and fall onto the mounting holes 324 below. The telescopic clamping cylinder... 329 extends and drives the clamping ring 330 to clamp the multiple gaskets. Then, the second cylinder 321 retracts to retract the mounting hole 324 on the assembly plate 322 to below the feeding guide 22. The third cylinder 325 retracts and drives the rotating screw 328 downward to start the drive motor 327 to drive the rotating screw 328 to rotate, rotating the self-tapping screw in the alignment tube 23 through the center hole of the multiple gaskets. The drive motor 327 stops and the third cylinder 325 drives the rotating screw 328 to move upward. Then, the telescopic clamping cylinder 329 opens the clamping ring 330 and retracts backward. Then, the ejector cylinder 331 extends outward to eject the assembled self-tapping screw from the top outlet 332 into the collection frame 333. Thus, a complete self-tapping screw assembly is completed.

[0056] In addition, a detection device is integrated into the entire equipment to enhance automation and intelligence, thereby improving operational efficiency and production progress. The detection device includes magnetic switches on all cylinders used in this application, a photoelectric switch 144 on the combined guide column 14, and a metal proximity switch 24 on the discharge guide 22. The photoelectric switch 144 and the proximity switch are signal-connected to the magnetic switches, linking all components within the equipment. For example, the photoelectric switch 144 is signal-connected to the transverse cylinder 313, the lifting cylinder 311, and the second cylinder 321 to detect when multiple gaskets within the combined guide column 14 have reached the perforation 15, and then moves to the transverse cylinder 313. The lifting cylinder 311 and the second cylinder 321 send control signals. The magnetic switch signals of the lifting cylinder 311, the tilting cylinder 312, the lateral cylinder 313, and the telescopic clamping cylinder 329 are connected to transmit their respective cylinder stroke signals. The metal proximity switch 24 is connected to the third cylinder 325 and the second cylinder 321 to detect the self-tapping screw being unloaded and transmit signals to the third cylinder 325 and the second cylinder 321. The magnetic switch of the second cylinder 321 is connected to the magnetic switch signals of the tilting cylinder 312 and the third cylinder 325. The magnetic switch of the ejection cylinder 331 is connected to the magnetic switch signal of the telescopic clamping cylinder 329. The magnetic switch of the telescopic clamping cylinder is connected to the magnetic switch signal of the tilting cylinder 312. The first cylinder 315 is connected to the tilting cylinder 312 and the telescopic clamping cylinder 329.

[0057] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An apparatus for assembling a combination self-tapping screw, characterized by, It includes a combination washer mechanism (1) for combining multiple washers, a screw mechanism (2) for cutting self-tapping screws, and an assembly mechanism (3) for assembling the combined multiple washers and the cut self-tapping screws into a combination self-tapping screw. The combined gasket mechanism (1) includes multiple gasket vibrating discs and a combined guide column (14). The discharge ends of the multiple gasket vibrating discs are all connected to the combined guide column (14). The combined guide column (14) is provided with multiple gasket channels. A through hole (15) is provided at the bottom end of the combined guide column (14). A spring (16) with its top end extending to the through hole (15) is provided on one side of the through hole (15). The spring (16) is used to support the multiple gaskets and position the center hole coaxially. The assembly mechanism (3) includes a material picking component (31) and an assembly component (32). The material picking component (31) is used to remove the combined gasket after the combined guide column (14) is assembled and send it to the assembly component (32) for assembly. The assembly component (32) includes a second cylinder (321). The telescopic end of the second cylinder (321) is provided with an assembly plate (322). The assembly plate (322) is provided with an assembly base (323). The assembly base (323) has a mounting hole (324). The screw mechanism (2) includes a self-tapping screw vibratory feeder (21), and the discharge end of the self-tapping screw vibratory feeder (21) is connected to a feeding guide (22), which is used to guide the self-tapping screw to the mounting hole (324). The material handling assembly (31) includes a support plate (317), on which a lifting cylinder (311) is installed. The telescopic end of the lifting cylinder (311) is connected to a tilting cylinder (312). The tilting cylinder (312) is provided with a transverse cylinder (313). The telescopic end of the transverse cylinder (313) is provided with a through rod (314). The through rod (314) passes through the through hole (15) at the bottom of the combined guide column (14) as the transverse cylinder (313) moves back and forth, and passes through the multiple gaskets arranged in the through hole (15) together. The assembly plate (322) is provided with a telescopic clamping cylinder (329), and the telescopic end of the telescopic clamping cylinder (329) is provided with a clamping ring (330). The telescopic clamping cylinder (329) is used to move the clamping ring (330) closer to or away from the mounting hole (324) and to open or close the clamping ring (330). The bottom end of the feeding guide (22) has an alignment tube (23) aligned with the mounting hole (324) on the assembly base (323). A third cylinder (325) is provided above the second cylinder (321). A fixing plate (326) is provided at the telescopic end of the third cylinder (325). A drive motor (327) is provided on the fixing plate (326). A rotating screw (328) is provided at the output end of the drive motor (327). The end of the rotating screw (328) passes through the alignment tube (23) to rotate the self-tapping screw coming down from the feeding guide (22) through the center hole of multiple washers, so that multiple washers and self-tapping screws are combined together.

2. An apparatus for assembling a combination self-piercing rivet according to claim 1, wherein The tilting cylinder (312) is also provided with a first cylinder (315). The telescopic end of the first cylinder (315) is provided with a protective pad (316). The protective pad (316) has a hole in the direction near the through rod (314) so ​​that the front end of the protective pad (316) passes through the through rod (314) under the telescopic action of the first cylinder (315) to block or release the pad on the through rod (314).

3. An apparatus for assembling a combination self-piercing rivet according to claim 2, wherein An ejector cylinder (331) is provided on one side of the assembly plate (322) for ejecting the assembled self-tapping screw after the combination gasket and self-tapping screw are assembled and the clamping ring (330) is opened and retracted. An ejector outlet (332) communicating with the mounting hole (324) is provided on the assembly plate (322) on the other side away from the ejector cylinder (331). A collection frame (333) is provided on the side of the assembly plate (322) near the ejector outlet (332) to collect the ejected self-tapping screw.

4. An apparatus for assembling a combination self-piercing rivet according to claim 3, wherein The equipment also includes a detection device, which includes magnetic switches on the first cylinder (315), the second cylinder (321), the third cylinder (325), the lifting cylinder (311), the tilting cylinder (312), the lateral movement cylinder (313), the telescopic clamping cylinder (329), and the ejection cylinder (331). A photoelectric switch (144) is provided on the combined guide column (14), and a metal proximity switch (24) is provided on the discharge guide tube (22). The photoelectric switch (144) and the metal proximity switch (24) are signal connected to the magnetic switches.

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