Automatic feeding system and method

Abstract

The invention provides an automatic feeding system and method. The automatic feeding system comprises a machine table, a circulating conveying mechanism, a workpiece feeding mechanism, a panel stock bin, a panel transferring mechanism, a workpiece transferring mechanical arm, a visual detection device, a cover plate feeding mechanism, a jig discharging transferring mechanism and a jig collecting mechanism, and the circulating conveying mechanism, the workpiece feeding mechanism, the panel stock bin, the panel transferring mechanism, the workpiece transferring mechanical arm, the visual detection device, the cover plate feeding mechanism, the jig discharging transferring mechanism and the jig collecting mechanism are arranged on the machine table. According to the automatic feeding system and method, the workpieces, the jig panels and the jig cover plates are fed and assembled in sequence through different automatic mechanisms, automatic production is achieved, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of automatic feeding, and in particular to an automatic feeding system and method for feeding a workpiece to be coated onto a fixture. Background Art

[0002] Mobile phone logos usually need to be PVD coated to present different colors, improve aesthetics, and improve wear and corrosion resistance. Since the logo workpiece to be coated has a large highlight area and a small shielding area, the assembly jig requires high precision. The current automated equipment for assembling jigs is difficult to meet the yield requirements, resulting in operators still needing to manually assemble the workpiece to the jig. The manual loading method is inefficient and the yield is difficult to guarantee, resulting in a high rate of excess damage.

[0003] Therefore, developing an automated device and method for automatically assembling a workpiece to a fixture is a problem that needs to be solved urgently. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present application provides an automatic feeding system and method to improve production efficiency and product yield.

[0005] In a first aspect, the present application provides an automatic feeding system for assembling a workpiece requiring PVD coating into a fixture, wherein the fixture comprises a matching panel and a cover plate, wherein the panel and the cover plate are provided with a receiving groove for placing the workpiece, and the workpiece is clamped between the panel and the cover plate, wherein the automatic feeding system comprises: A machine platform, the machine platform includes a table plate for carrying; A circular transmission mechanism, the circular transmission mechanism includes a transmission rail and a plurality of transmission seats, the transmission rail is arranged parallel to the surface of the machine table, the transmission seats move cyclically along the transmission rail, the upper end surface of the transmission seat is arranged as a plane on which components can be placed, and the transmission rail includes a starting end and an end end; A workpiece loading mechanism, which is arranged on the upper surface of the table and is used to store and transport the workpieces to be assembled; The panel silo is arranged on the upper surface of the table and close to the starting end of the transmission guide rail, and is used to place and transmit the panel of the jig; The panel transfer mechanism is arranged on the upper surface of the table and close to the panel bin, and is used to pick up the panel from the panel bin and transfer it to the conveying seat; A workpiece transfer robot, which is disposed on the upper surface of the table and close to the workpiece loading mechanism, and is used to pick up the workpiece from the workpiece loading mechanism and transfer it to the panel placed on the conveying seat; A visual inspection device is arranged on the machine platform and is located within the moving path of the workpiece transfer robot. The visual inspection device performs machine vision recognition on the workpiece picked up by the workpiece transfer robot to obtain the plane angle information of the workpiece. The workpiece transfer robot adjusts the angle of the picked up workpiece according to the plane angle information of the workpiece and the panel position of the preset transfer seat so that the workpiece can be placed on the panel of the transfer seat; The cover plate feeding mechanism is arranged on the upper surface of the table and close to the end of the transmission guide rail, and is used to place the cover plate of the jig and transfer the cover plate to the upper part of the panel of the transmission seat; A jig unloading and transferring mechanism is arranged on the upper surface of the table and close to the end of the transmission guide rail, and is used to pick up the jig on which the panel and cover plate have been assembled on the transmission seat; The jig collecting mechanism is arranged on the upper surface of the table and close to the jig unloading and transferring mechanism to collect the jig picked up by the jig unloading and transferring mechanism.

[0006] In an optional implementation, the transfer guide rail includes an upper transfer rail arranged on the upper surface of the table and a lower transfer rail arranged on the lower surface of the table. The table is provided with a lifting window at the starting end and the end of the transfer guide rail for the vertical passage of the transfer seat. The two lifting windows are provided with a transfer lifting mechanism for lifting the transfer seat. The transfer lifting mechanism connects the upper transfer rail and the lower transfer rail. The transfer seat rises or falls between the upper transfer rail and the lower transfer rail so that the transfer seat moves cyclically along the transfer guide rail.

[0007] In an optional implementation, the visual inspection device includes a detection light source and a detection camera, wherein the detection light source is disposed upward to emit detection light, and the detection camera is disposed upward to capture an image of the workpiece.

[0008] In an optional implementation, the panel silo includes: a silo seat, which is fixedly mounted on the upper surface of the table; a panel silo, the lower end of which is mounted on the silo seat, and the panel silo is used to stack panels vertically; it also includes a panel transfer assembly, a pushing guide rail and a panel pushing mechanism, the panel transfer assembly and the pushing guide rail are laterally mounted on the silo seat, and the panel pushing mechanism drives the panel transfer assembly to move along the pushing guide rail; the top of the silo seat cooperates with the panel transfer assembly, and the panel transfer assembly is configured to accommodate the panel and push the panel out laterally from the bottom of the silo seat.

[0009] In an optional implementation, the panel transfer mechanism includes a transfer drive mechanism and a panel clamping claw, the panel clamping claw is laterally movable on the transfer drive mechanism, the panel clamping claw is configured to pick up and place the panel, and the transfer drive mechanism drives the panel clamping claw to move laterally.

[0010] In an optional implementation, the workpiece transfer robot includes a base, a multi-axis robotic arm and a suction mechanism. The base is fixedly arranged on the upper surface of the table, the multi-axis robotic arm is rotatably arranged on the base, and the suction mechanism is arranged at the free end of the multi-axis robotic arm; the suction mechanism includes a plurality of suction parts for sucking workpieces.

[0011] In an optional implementation, the suction part includes a telescopic drive, a suction seat, a rotary drive, a rotating shaft and a suction cup. The telescopic drive is fixedly arranged on the suction mechanism, the telescopic end of the telescopic drive is connected to the suction seat to drive the suction seat to telescopically move, the rotary drive is arranged on the suction seat to move synchronously, the rotating shaft is transmission-connected to the rotating output end of the rotary drive, and the suction cup is arranged at the bottom of the rotating shaft to suck and rotate the workpiece.

[0012] In an optional implementation, the workpiece loading mechanism includes a workpiece pallet loading mechanism for storing and moving workpiece pallets, and the workpiece pallets are used to arrange and place workpieces; the workpiece pallet loading mechanism includes a first pallet bin, a second pallet bin and a pallet transmission mechanism arranged on the upper surface of the table, the pallet transmission mechanism is arranged between the first pallet bin and the second pallet bin, the first pallet bin and the second pallet bin are configured to vertically stack workpiece pallets, and the pallet transmission mechanism is configured to translate the workpiece pallet from the first pallet bin to a position for the workpiece transfer robot to pick up the workpiece and transfer the workpiece pallet to the second pallet bin.

[0013] In another optional implementation, the workpiece loading mechanism includes a workpiece hanging rail loading mechanism, which includes a frame, a workpiece carrying assembly, a workpiece suction assembly, a workpiece transfer assembly and an exchange loading assembly. The frame is fixedly arranged on a table, the workpiece transfer assembly is arranged on the frame, the workpiece suction assembly is movably arranged on the workpiece transfer assembly, and the workpiece carrying assembly and the exchange loading assembly are arranged on the table.

[0014] In an optional implementation, the cover plate feeding mechanism includes: a jig tray conveying mechanism for storing and moving the jig tray, the jig tray is placed with the cover plate of the jig; and a cover plate transferring mechanism for transferring the cover plate of the jig to the conveying seat; the jig tray conveying mechanism includes a first jig tray bin, a second jig tray bin and a jig tray conveying mechanism, the first jig tray bin and the second jig tray bin vertically stack the jig trays, the jig tray conveying mechanism is arranged between the first jig tray bin and the second jig tray bin, and the jig tray conveying mechanism is configured to transfer the jig tray from the first jig tray bin to the second jig tray bin. The jig tray magazine is translated to a position for the cover plate transfer mechanism to pick up the cover plate and transfer the jig tray to the second jig tray magazine; the cover plate transfer mechanism includes a cover plate transfer drive mechanism, a cover plate transfer guide rail and a cover plate picking mechanism, the cover plate transfer drive mechanism is transversely arranged on the cover plate transfer guide rail, and the cover plate picking mechanism is movably arranged on the cover plate transfer guide rail; the cover plate picking mechanism is configured to pick up and release the cover plate, and the cover plate transfer drive mechanism drives the cover plate picking mechanism to move back and forth along the cover plate transfer guide rail, so that the cover plate picking mechanism picks up the cover plate and places it on the panel of the conveying seat.

[0015] In a second aspect, an automatic feeding method is provided for assembling a workpiece requiring PVD coating into a fixture, wherein the fixture comprises a matching panel and a cover plate, wherein the automatic feeding method is based on the above-mentioned automatic feeding system and comprises the following steps: S1. Place the workpiece on the workpiece feeding mechanism, place the panel on the panel silo, and place the cover on the cover feeding mechanism; S2-1, the workpiece loading mechanism moves the workpiece to be picked up to a preset position; S2-2, the panel transfer mechanism picks up the panel from the panel silo and places it on the transfer seat of the circulation transmission mechanism; S3, the workpiece transfer robot picks up the workpiece from the workpiece feeding mechanism, and moves the picked up workpiece to above the visual inspection device, the visual inspection device performs visual recognition on the workpiece to obtain the plane angle information of the workpiece, and the workpiece transfer robot adjusts the angle of the picked up workpiece according to the plane angle information of the workpiece and the preset panel position of the conveying seat so that the workpiece can be placed on the panel of the conveying seat; S4, the conveying seat moves to the next station, and the cover plate loading mechanism transfers and places the cover plate on the upper part of the upper panel of the conveying seat; S5, the fixture unloading and transferring mechanism picks up the fixture on the conveying seat and transfers it to the fixture receiving mechanism; S6. Collect the jig from the jig receiving mechanism to complete a single loading operation; S7, repeat the above steps of feeding.

[0016] The automatic feeding system and automatic feeding method provided by the present application have at least the following beneficial effects: through different automated mechanisms, the workpiece, the fixture panel and the fixture cover are fed separately and assembled in sequence, automated production is realized and production efficiency is improved. Through the cooperation of the manipulator and the visual inspection device, the precise positioning of the workpiece is achieved, so that the surface scratches or placement deviation problems are not likely to occur when the workpiece is transferred into the panel, which greatly improves the product yield. Through the compact cooperation of various automated mechanisms, the production rhythm can be improved, automated production can be realized, and the output can be increased. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic structural diagram of an automatic feeding system provided in one embodiment of the present application.

[0018] Figure 2 This is a schematic structural diagram from another angle of the automatic feeding system provided in one embodiment of the present application.

[0019] Figure 3 A top view of an automatic feeding system provided in one embodiment of the present application.

[0020] Figure 4 A side view of an automatic loading system provided in one embodiment of the present application.

[0021] Figure 5 A partial view of an automatic loading system provided in one embodiment of the present application, showing the positional relationship between the visual inspection device and the workpiece transfer robot.

[0022] Figure 6 A schematic structural diagram of a panel silo and a panel transfer mechanism provided in one embodiment of the present application.

[0023] Figure 7 This is a schematic structural diagram from another angle of the panel silo and panel transfer mechanism provided in one embodiment of the present application.

[0024] Figure 8 A schematic structural diagram of a workpiece transfer robot provided in one embodiment of the present application.

[0025] Fig. 9 A schematic structural diagram of a suction portion of a workpiece transfer robot provided in one embodiment of the present application.

[0026] Fig.10A schematic structural diagram of a workpiece pallet loading mechanism provided in one embodiment of the present application.

[0027] Fig.11 A schematic structural diagram of a cover plate loading mechanism provided in one embodiment of the present application.

[0028] Fig.12 A schematic diagram of the structure of a jig tray conveying mechanism provided in one embodiment of the present application.

[0029] Fig.13 This is a partial view of the automatic feeding system provided in one embodiment of the present application, showing the structural schematic diagram of the jig unloading and transferring mechanism and the jig receiving mechanism.

[0030] Fig.14 A schematic structural diagram of a workpiece hanging and loading mechanism provided in one embodiment of the present application.

[0031] Fig.15 A schematic structural diagram of a workpiece suction assembly provided in one embodiment of the present application.

[0032] Fig.16 This is a schematic structural diagram from another angle of a workpiece suction assembly provided in one embodiment of the present application.

[0033] Fig.17 A schematic structural diagram of an exchange loading assembly provided in one embodiment of the present application.

[0034] Fig.18 This is a schematic structural diagram from another angle of the exchange loading assembly provided in one embodiment of the present application.

[0035] Fig.19 A schematic structural diagram of a workpiece supporting assembly provided in one embodiment of the present application.

[0036] Description of reference numerals: 1. Machine platform; 11. Table; 12. Lifting window; 13. Panel; 14. Cover plate; 15. Workpiece tray; 16. Fixture tray; 100, circular transmission mechanism; 101, transmission guide rail; 1011, starting end; 1012, end; 102, transmission seat; 103, upper transmission rail; 104, lower transmission rail; 105, transmission lifting mechanism; 210, workpiece pallet loading mechanism; 211, first pallet bin; 212, second pallet bin; 213, pallet transmission mechanism; 220, workpiece hanging rail feeding mechanism; 221, frame; 222, workpiece carrying assembly; 223, workpiece suction assembly; 224, workpiece transfer assembly; 225, exchange loading assembly; 2221, second pulley set; 2222, second driving mechanism; 2223, connecting block; 2224, support plate; 2225, second transmission belt; 2226, second driving wheel; 2227, second driven wheel; 2229, third slide rail; 2231, transfer connecting plate; 2232, guide plate; 2233, vertical slide rail; 2234, vertical slider; 2235, slider connecting plate; 2236, first lifting mechanism; 2237, rotation driving mechanism; 2238, rotating rod; 2239, suction head; 22340, suction nozzle; 2241, translation drive mechanism; 2242, transverse guide rail; 2251, loading bracket; 2252, driving mounting plate; 2253, first slide rail; 2254, second slide rail; 2255, first positioning frame; 2256, second positioning frame; 2257, second lifting mechanism; 226, first pulley group; 2261, first driving wheel; 2262, first driven wheel; 2263, first transmission belt; 2264, lower belt; 2265, upper belt; 2266, first placement plate; 2267, second placement plate; 2268, workpiece positioning block; 227, hanging rail frame; 2271, bayonet portion; 300, panel silo; 301, silo seat; 302, panel silo; 303, panel transfer assembly; 304, push guide rail; 305, panel push mechanism; 400, panel transfer mechanism; 401, panel transfer drive mechanism; 402, panel clamping claw; 500, workpiece transfer manipulator; 501, base; 502, multi-axis manipulator; 503, suction mechanism; 504, suction unit; 5041, telescopic driver; 5042, suction seat; 5043, rotation driver; 5044, rotation axis; 5045, suction cup; 5046, position sensor; 5047, induction element; 5048, induction unit; 600, visual inspection device; 601, inspection light source; 602, inspection camera; 700, cover feeding mechanism; 710, fixture tray conveying mechanism; 711, first fixture tray bin; 7111, first plate lifting mechanism; 7112, first plate clamping mechanism; 712, second fixture magazine; 7121, second plate lifting mechanism; 7122, second plate clamping mechanism; 7123, plate carrying mechanism; 713, cover plate conveying mechanism; 7131, conveying motor; 7132, conveying driving roller; 7133, conveying belt; 7134, conveying driven wheel; 714, base; 720, cover plate transfer mechanism; 721, cover plate transfer drive mechanism; 722, cover plate transfer guide rail; 723, cover plate picking mechanism; 800, fixture unloading and transfer mechanism; 801, unloading and transfer driving mechanism; 802, unloading and transfer guide rail; 803, fixture unloading and clamping mechanism; 900, a jig material receiving mechanism; 901, a material receiving belt; 902, a material receiving driving mechanism. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] In this document, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0039] In addition, in this article, directional terms such as "upper" and "lower" are defined relative to the orientation of the structure schematically placed in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to the change of the orientation of the structure.

[0040] See also Figures 1 to 19 The present application provides an automatic loading system for assembling a workpiece requiring PVD coating into a fixture, wherein the fixture comprises a matching panel 13 and a cover plate 14, wherein the panel 13 and the cover plate 14 are provided with a receiving groove for placing the workpiece, and the workpiece is clamped between the panel 13 and the cover plate 14.

[0041] Specific, combined Figures 1 to 4 , the automatic feeding system provided in this application includes: The machine 1 comprises a table 11 for carrying; The circular transmission mechanism 100 includes a transmission rail 101 and a plurality of transmission seats 102. The transmission rail 101 is arranged parallel to the surface of the machine 1. The transmission seats 102 move cyclically along the transmission rail 101. The upper end surface of the transmission seat 102 is arranged as a plane on which components can be placed. The transmission rail 101 includes a starting end 1011 and an end end 1012. A workpiece loading mechanism, which is disposed on the upper surface of the table 11 and is used to store and transport workpieces to be assembled; The panel bin 300 is disposed on the upper surface of the platen 11 and close to the starting end 1011 of the transmission guide rail 101, and is used for placing and transmitting the panel 13 of the jig; The panel transfer mechanism 400 is disposed on the upper surface of the platen 11 and close to the panel bin 300 , and is used to pick up the panel 13 from the panel bin 300 and transfer it to the transfer seat 102 ; The workpiece transfer robot 500 is disposed on the upper surface of the platen 11 and close to the workpiece loading mechanism, and is used to pick up the workpiece from the workpiece loading mechanism and transfer it to the panel 13 placed on the transfer seat 102; A visual inspection device 600 is disposed on the machine platform 1 and is located within the moving path of the workpiece transfer robot 500. The visual inspection device 600 performs machine vision recognition on the workpiece picked up by the workpiece transfer robot 500 to obtain the plane angle information of the workpiece. The workpiece transfer robot 500 adjusts the angle of the picked up workpiece according to the plane angle information of the workpiece and the panel position of the preset transfer seat 102 so that the workpiece can be placed on the panel 13 of the transfer seat 102. The cover plate feeding mechanism 700 is disposed on the upper surface of the platen 11 and close to the end 1012 of the transmission guide rail 101, and is used to place the cover plate 14 of the jig and transfer the cover plate 14 to the upper part of the panel 13 of the transmission seat 102; A jig unloading and transferring mechanism 800 is disposed on the upper surface of the platen 11 and close to the end 1012 of the transmission guide rail 101, and is used to pick up the jig on which the panel 13 and the cover plate 14 have been assembled on the transmission seat 102; The jig collecting mechanism 900 is disposed on the upper surface of the platen 11 and close to the jig unloading and transferring mechanism 800 to collect the jig picked up by the jig unloading and transferring mechanism 800.

[0042] Combination Figure 3 and Figure 4 As shown, in one embodiment, the transfer rail 101 includes an upper transfer rail 103 arranged on the upper surface of the table 11 and a lower transfer rail 104 arranged on the lower surface of the table 11. The table 11 is provided with a lifting window 12 for the vertical passage of the transfer seat 102 at the starting end 1011 and the end end 1012 of the transfer rail 101. The two lifting windows 12 are provided with a transfer lifting mechanism 105 for lifting the transfer seat 102. The transfer lifting mechanism 105 connects the upper transfer rail 103 and the lower transfer rail 104. The transfer seat 102 rises or falls between the upper transfer rail 103 and the lower transfer rail 104, so that the transfer seat 102 moves cyclically along the transfer rail 101.

[0043] The transfer guide rail 101 is extended along the process position of each mechanism to facilitate the operation of each process.

[0044] In order to enable the conveying seat 102 to move as required, the circulating conveying mechanism 100 is also provided with a driving mechanism for traction driving each conveying seat 102 on the conveying guide rail 101, such as a method of using a motor to drive a traction rope, or other implementation methods, which are not listed one by one in this application.

[0045] Combination Figure 4 and Figure 5 As shown, in one embodiment, the visual inspection device 600 includes a detection light source 601 and a detection camera 602. The detection light source 601 is arranged upward to emit detection light, and the detection camera 602 is arranged upward to capture an image of the workpiece.

[0046] Combination Figure 6 and Figure 7 As shown, in one embodiment, the panel silo 300 includes: The silo seat 301 is fixedly disposed on the upper surface of the table 11; A panel bin 302, the lower end of which is disposed on the bin seat 301, and the panel bin 302 is vertically stacked to place the panels 13; The panel silo 300 also includes a panel transfer assembly 303, a pushing guide rail 304 and a panel pushing mechanism 305. The panel transfer assembly 303 and the pushing guide rail 304 are transversely arranged on the silo seat 301. The panel pushing mechanism 305 drives the panel transfer assembly 303 to move along the pushing guide rail 304. The top of the silo seat 301 cooperates with the panel transfer assembly 303. The panel transfer assembly 303 is configured to accommodate the panel 13 and push the panel 13 laterally out of the bottom of the silo seat 301.

[0047] Specifically, the silo seat 301 can be arranged across the panel pushing mechanism 305 and the pushing guide rail 304 , and a groove is provided on the top upper end surface of the silo seat 301 to accommodate the movement of the panel transfer assembly 303 .

[0048] The upper part of the panel transfer assembly 303 is a horizontal plate, which is provided with a slot for accommodating the panel 13 , and the lower part of the horizontal plate is connected to the driving end of the panel pushing mechanism 305 , and the panel pushing mechanism 305 drives the panel transfer assembly 303 to move.

[0049] The panel bin 302 can be composed of vertical panels, and a hole with the thickness of a panel is set at the bottom. When the bottom panel 13 falls into the slot of the panel transfer component 303, the panel transfer component 303 can move horizontally to bring the bottom panel 13 out to the preset workstation.

[0050] The panel pushing mechanism 305 may be provided with a driving force by a servo motor. In other embodiments, a driver such as a cylinder may also be used.

[0051] Combination Figure 6 and Figure 7 In one embodiment, the panel transfer mechanism 400 includes a panel transfer driving mechanism 401 and a panel clamping claw 402. The panel clamping claw 402 is laterally movable and is arranged on the transfer driving mechanism. The panel clamping claw 402 is configured to be able to pick up and place the panel 13. The panel transfer driving mechanism 401 drives the panel clamping claw 402 to move laterally.

[0052] The panel transfer drive mechanism 401 may use a servo motor to provide driving force. In other embodiments, a drive such as a cylinder may also be used.

[0053] Combination Figure 8 As shown, in one embodiment, the workpiece transfer robot 500 includes a base 501, a multi-axis robot arm 502, and a suction mechanism 503. The base 501 is fixedly disposed on the upper surface of the table 11, the multi-axis robot arm 502 is rotatably disposed on the base 501, and the suction mechanism 503 is disposed at the free end of the multi-axis robot arm 502; the suction mechanism 503 includes a plurality of suction parts 504 for sucking the workpiece.

[0054] Through the design of the multi-axis robot arm 502, the workpiece transfer robot 500 can achieve multi-directional and multi-angle movement, thereby improving the flexibility and efficiency of transfer and loading.

[0055] The base 501 may have a built-in rotating part to drive the multi-axis robot 502 to rotate. The multi-axis robot 502 may be a four-axis robot, a five-axis robot or a six-axis robot.

[0056] Combination Fig. 9 As shown, in one embodiment, the suction part 504 includes a telescopic driver 5041, a suction seat 5042, a rotation driver 5043, a rotating shaft 5044 and a suction cup 5045. The telescopic driver 5041 is fixedly arranged on the suction mechanism 503. The telescopic end of the telescopic driver 5041 is connected to the suction seat 5042 to drive the suction seat 5042 to telescopically move. The rotation driver 5043 is arranged on the suction seat 5042 to move synchronously. The rotating shaft 5044 is transmission-connected to the rotating output end of the rotating driver 5043. The suction cup 5045 is arranged at the bottom of the rotating shaft 5044 to suck and rotate the workpiece.

[0057] In this embodiment, the suction part 504 also includes a sensing member 5047 and a position sensor 5046. The sensing member 5047 is fixedly connected to the rotating shaft 5044 so as to rotate synchronously with the rotating shaft 5044. The position sensor 5046 is installed on the suction seat 5042. The sensing member 5047 and the position sensor 5046 are coupled to sense the rotation position of the rotating shaft 5044.

[0058] In this embodiment, the position sensor 5046 is a groove type photoelectric sensor. Specifically, the groove type photoelectric sensor can be a commercially available product, such as an existing product of Omron Corporation and other companies.

[0059] In other embodiments, the position sensor 5046 may also adopt other sensors.

[0060] In order to form a better coupling with the groove type photoelectric sensor, in this embodiment, the sensing element 5047 is extended to have a sensing portion 5048 protruding therefrom, and the sensing portion 5048 is configured to couple with the groove of the groove type photoelectric sensor.

[0061] Combination Fig.10 As shown, in one embodiment, the workpiece loading mechanism includes a workpiece pallet loading mechanism 210 for storing and moving the workpiece pallet 15, and the workpiece pallet 15 is used to arrange and place the workpieces.

[0062] Specifically, the workpiece pallet loading mechanism 210 includes a first pallet bin 211, a second pallet bin 212 and a pallet transmission mechanism 213 which are arranged on the upper surface of the table 11. The pallet transmission mechanism 213 is arranged between the first pallet bin 211 and the second pallet bin 212. The first pallet bin 211 and the second pallet bin 212 are configured to vertically stack the workpiece pallets 15. The pallet transmission mechanism 213 is configured to translate the workpiece pallet 15 from the first pallet bin 211 to a position for the workpiece transfer robot 500 to pick up the workpiece and transfer the workpiece pallet 15 to the second pallet bin 212.

[0063] The first pallet bin 211 and the second pallet bin 212 can be stacked to place workpiece pallets 15, and a mechanism for lifting, removing or inserting the workpiece pallet 15 can be provided at the bottom. The workpiece pallet 15 loaded with workpieces at the bottom of the first pallet bin 211 is moved out to the pallet conveying mechanism 213, and after the workpiece transfer robot 500 picks up the workpiece, the pallet conveying mechanism 213 transfers the workpiece pallet 15 to the second pallet bin 212, and the second pallet bin 212 inserts the empty workpiece pallet 15 to store it.

[0064] The pallet transmission mechanism 213 may adopt a transmission belt structure, and the workpiece pallet 15 may move along with the transmission of the belt.

[0065] Combination Figures 14 to 19In another embodiment, the workpiece loading mechanism includes a workpiece hanging rail loading mechanism 220, and the workpiece hanging rail loading mechanism 220 includes a frame 221, a workpiece carrying assembly 222, a workpiece suction assembly 223, a workpiece transfer assembly 224 and an exchange loading assembly 225. The frame 221 is fixedly arranged on the table 11, the workpiece transfer assembly 224 is arranged on the frame 221, the workpiece suction assembly 223 is movably arranged on the workpiece transfer assembly 224, and the workpiece carrying assembly 222 and the exchange loading assembly 225 are arranged on the table 11.

[0066] Specific, combined Fig.14 As shown, the workpiece transfer assembly 224 includes a translation drive mechanism 2241 and a transverse guide rail 2242, the translation drive mechanism 2241 and the transverse guide rail 2242 are fixedly arranged on the frame 221, the workpiece suction assembly 223 is slidably arranged on the transverse guide rail 2242, the translation drive mechanism 2241 is transmission-connected with the workpiece suction assembly 223, and the translation drive mechanism 2241 drives the workpiece suction assembly 223 to realize transverse movement along the transverse guide rail 2242.

[0067] The translation drive mechanism 2241 may adopt a servo motor or a stepper motor, and cooperate with a precise transmission mechanism (such as a belt drive or a gear drive) to achieve high-precision position control.

[0068] The use of the transverse guide rail 2242 ensures the stability and straightness of the movement process and further improves the positioning accuracy.

[0069] In other embodiments, the translation drive mechanism 2241 may also use a high-precision drive cylinder, such as a pneumatic cylinder, a hydraulic cylinder or other drive mechanism.

[0070] Combination Fig.15 , Fig.16 As shown, in one embodiment, the workpiece suction assembly 223 includes a transfer connecting plate 2231, a guide plate 2232, a vertical slide rail 2233, a vertical slider 2234, a slider connecting plate 2235, a first lifting mechanism 2236, a rotation drive mechanism 2237, a rotating rod 2238 and a plurality of suction heads 2239.

[0071] in: The transfer connecting plate 2231 is transmission connected to the translation driving mechanism 2241 and is slidably set on the transverse guide rail 2242. The guide rail plate 2232 is fixedly set on the lower surface of the transfer connecting plate 2231. The slider connecting plate 2235 is transmission connected to the first lifting mechanism 2236, and the slider connecting plate 2235 is parallel to the guide rail plate 2232. The vertical slide rail 2233 is fixedly set on one side surface of the guide rail plate 2232. The vertical slider 2234 is fixedly connected to one side surface of the slider connecting plate 2235. The vertical slider 2234 is slidably matched with the vertical slide rail 2233. The rotation driving mechanism 2237 is fixedly set on the slider connecting plate 2235. The rotating rod 2238 is transmission connected to the rotation driving mechanism 2237. The suction head 2239 is fixedly set on the rotating rod 2238.

[0072] Through the combination of three degrees of freedom, namely, lateral movement, vertical lifting and rotation, the workpiece suction component 223 can achieve flexible movement and precise positioning of the suction operation.

[0073] Specifically, the first lifting mechanism 2236 can use an electric push rod or a telescopic cylinder to drive the sliding connecting plate, thereby controlling the up and down movement of the suction head 2239.

[0074] The rotary drive mechanism 2237 may adopt a rotary cylinder or a servo motor to drive the rotating rod 2238 to rotate, thereby controlling the direction of the suction head 2239.

[0075] The design of the vertical slide rail 2233 and the vertical slider 2234 can improve the stability and straightness of the lifting process.

[0076] In this embodiment, a suction nozzle 22340 for sucking the workpiece is provided at one side of the bottom of the suction head 2239. The suction nozzle 22340 can be connected to an external air source to control the suction and release.

[0077] The design of multiple suction heads 2239 enables the device to process multiple workpieces at the same time or adapt to workpieces of different sizes.

[0078] Combination Fig.17 , Fig.18 As shown, in one embodiment, the exchange loading assembly 225 includes a loading bracket 2251, a drive mounting plate 2252, a first slide rail 2253, a second slide rail 2254, a first positioning frame 2255, a second positioning frame 2256, a second lifting mechanism 2257 and a first pulley set 226.

[0079] Among them, the driving mounting plate 2252 is arranged on the loading bracket 2251, and the driving mounting plate 2252 can be installed with a driver (not shown in the figure) for driving the first pulley group 226, such as a servo motor, a stepper motor or a rotary cylinder and other driving mechanisms with a rotating function.

[0080] The first pulley assembly 226 includes a first driving wheel 2261, a first driven wheel 2262 and a first transmission belt 2263. The first driving wheel 2261 and the second driven wheel 2227 are respectively disposed at two ends of the loading bracket 2251, and the first transmission belt 2263 is wound around the first driving wheel 2261 and the second driven wheel 2227. The first driving wheel 2261 is in transmission connection with a driver mounted on the driving mounting plate 2252.

[0081] The first slide rail 2253 is horizontally arranged on one side of the loading bracket 2251, and the second slide rail 2254 is horizontally arranged on the other side of the loading bracket 2251; the second lifting mechanism 2257 is slidably arranged on the first slide rail 2253 and is fixedly connected to the lower belt 2264 of the first transmission belt 2263; the first positioning frame 2255 is transmission-connected to the second lifting mechanism 2257, and the second lifting mechanism 2257 drives the first positioning frame 2255 to move in the vertical direction; the second positioning frame 2256 is slidably connected to the second slide rail 2254 and is fixedly connected to the upper belt 2265 of the first transmission belt 2263; the upper ends of the first positioning frame 2255 and the second positioning frame 2256 are both provided with planes for placing the workpiece positioning block 2268.

[0082] Specific, combined Fig.18 As shown, a first placement plate 2266 for placing a workpiece positioning block 2268 is provided at the upper end of the first positioning frame 2255 , and a second placement plate 2267 for placing the workpiece positioning block 2268 is provided at the upper end of the second positioning frame 2256 .

[0083] The workpiece positioning block 2268 has a receiving groove adapted to the workpiece, and the receiving groove can position and place the workpiece. In this embodiment, each workpiece positioning block 2268 is adapted to accommodate one workpiece; in other embodiments, each workpiece positioning block 2268 can be provided with a plurality of receiving grooves for placing the workpiece.

[0084] Through the cooperation of the first pulley group 226 and a driver such as a servo motor, the synchronous reverse movement of the first positioning frame 2255 and the second positioning frame 2256 is achieved, which greatly improves the efficiency of workpiece exchange.

[0085] The second lifting mechanism 2257 enables the first positioning frame 2255 to move in the vertical direction. Combined with the synchronous reverse motion design of the first positioning frame 2255 and the second positioning frame 2256, one positioning frame can place a workpiece while the other positioning frame can remove the processed workpiece, greatly improving production efficiency.

[0086] The second lifting mechanism 2257 may adopt a lifting cylinder. In other embodiments, a driving mechanism with a telescopic function such as an electric push rod may also be adopted.

[0087] Combination Fig.19 As shown, in one embodiment, the workpiece bearing assembly 222 includes a second pulley set 2221 , a second driving mechanism 2222 , a connecting block 2223 and a support plate 2224 .

[0088] The second pulley set 2221 includes a second transmission belt 2225 , a second driving wheel 2226 and a second driven wheel 2227 . The second transmission belt 2225 is wound around the second driving wheel 2226 and the second driven wheel 2227 . The second driving mechanism 2222 is in transmission connection with the second driving wheel 2226 .

[0089] The lower end of the connecting block 2223 is fixedly connected to the second transmission belt 2225, and the upper end of the connecting block 2223 is fixedly connected to the lower surface of the support plate 2224. Through the cooperation of the second pulley group 2221 and the second driving mechanism 2222, the support plate 2224 is smoothly moved, which is convenient for conveying and positioning the workpiece.

[0090] In order to ensure the linearity and stability of the movement of the support plate 2224 , the workpiece supporting assembly 222 further includes a third slide rail 2229 , and the support plate 2224 is slidably connected to the third slide rail 2229 .

[0091] The third slide rails 2229 are configured as two parallel rails. In other embodiments, the number of the third slide rails 2229 may be increased or decreased as required.

[0092] In this embodiment, the second driving mechanism 2222 adopts a servo motor. In other embodiments, a stepping motor or a rotary cylinder or other driving mechanisms with a rotation function may also be adopted.

[0093] In one embodiment, a hanging frame 227 is placed on the upper surface of the support plate 2224, and the hanging frame 227 is provided with a clamping portion 2271 for clamping the workpiece. Multiple clamping portions 2271 can be arranged in an array, and multiple workpieces to be processed are clamped and placed on the clamping portions 2271 of the hanging frame 227, which can improve production efficiency.

[0094] In this embodiment, the workpiece transfer assembly 224, the workpiece suction assembly 223, the workpiece bearing assembly 222 and the exchange loading assembly 225 are arranged in two sets to improve production efficiency. In other embodiments, the number of the workpiece transfer assembly 224 can be increased or decreased as needed.

[0095] In the present application, the workpiece loading mechanism may include a workpiece pallet loading mechanism 210 and a workpiece hanging rail loading mechanism 220 at the same time, thereby improving the flexibility of workpiece loading.

[0096] In the present application, two workpiece transfer robots 500 can be set, and the two workpiece transfer robots 500 can both pick up workpieces from the same workpiece loading mechanism; or, one workpiece transfer robot 500 picks up the workpiece from the workpiece pallet loading mechanism 210, and the other workpiece transfer robot 500 picks up the workpiece from the workpiece hanging rail loading mechanism 220.

[0097] Combination Fig.11 As shown, in one embodiment, the cover plate feeding mechanism 700 includes: a jig tray 16 conveying mechanism 710 for storing and moving the jig tray, the jig tray 16 having the jig cover plate 14 placed thereon; and a cover plate transferring mechanism 720 for transferring the jig cover plate 14 to the conveying seat 102 .

[0098] Among them, the jig tray conveying mechanism 710 includes a first jig tray bin 711, a second jig tray bin 712 and a cover plate conveying mechanism 713. The first jig tray bin 711 and the second jig tray bin 712 vertically stack the jig tray 16. The cover plate conveying mechanism 713 is arranged between the first jig tray bin 711 and the second jig tray bin 712. The cover plate conveying mechanism 713 is configured to translate the jig tray 16 equipped with the cover plate 14 from the first jig tray bin 711 to a position for the cover plate transfer mechanism 720 to pick up the cover plate 14 and transfer the jig tray 16 to the second jig tray bin 712.

[0099] Specific, combined Fig.12 As shown, the fixture tray conveying mechanism 710 includes a base 714 .

[0100] The first jig tray warehouse 711 is provided with a first lifting plate mechanism 7111 and a first clamping plate mechanism 7112; the first lifting plate mechanism 7111 is arranged at the bottom of the first jig tray warehouse 711, and is used to lift and lower the jig tray 16 placed in the first jig tray warehouse 711 in the vertical direction; the first clamping plate mechanism 7112 is arranged on the side of the first jig tray warehouse 711, and is used to clamp the jig tray 16 lifted by the first lifting plate mechanism 7111.

[0101] The second jig tray warehouse 712 is provided with a second plate lifting mechanism 7121, a second plate clamping mechanism 7122 and a plate carrying mechanism 7123; the second plate lifting mechanism 7121 is arranged at the bottom of the second jig tray warehouse 712, and is used to lift and lower the jig tray 16 placed in the second jig tray warehouse 712 in the vertical direction; the second plate clamping mechanism 7122 is arranged on the side of the second jig tray warehouse 712, and is used to clamp part of the jig tray 16 lifted by the second plate lifting mechanism 7121; the plate carrying mechanism 7123 is arranged at the bottom of the second jig tray warehouse 712 and is adapted to the jig tray conveying mechanism 710, and is used to receive the jig tray 16 conveyed by the jig tray conveying mechanism 710 and move it into the second jig tray warehouse 712.

[0102] The plate carrier mechanism 7123 can be driven by a motor and a pulley.

[0103] The jig tray conveying mechanism 710 includes a conveying motor 7131, a conveying active roller 7132, a conveying belt 7133 and a conveying driven wheel 7134. The conveying motor 7131 is fixedly arranged on the machine base 714, and the conveying motor 7131 is transmission-connected to the conveying active roller 7132. The conveying belt 7133 is connected between the conveying active roller 7132 and the conveying driven wheel 7134.

[0104] In order to improve the stability of transmission, in this embodiment, two conveying driven wheels 7134 and two conveying belts 7133 are provided, and the two conveying driven wheels 7134 and the two conveying belts 7133 are arranged on both sides of the upper surface of the machine base 714 to carry the conveying fixture plate 16.

[0105] Combination Fig.11 As shown, the cover plate transfer mechanism 720 includes a cover plate transfer driving mechanism 721, a cover plate transfer guide rail 722 and a cover plate picking mechanism 723. The cover plate transfer driving mechanism 721 is horizontally arranged on the cover plate transfer guide rail 722, and the cover plate picking mechanism 723 is movably arranged on the cover plate transfer guide rail 722; the cover plate picking mechanism 723 is configured to pick up and release the cover plate 14, and the cover plate transfer driving mechanism 721 drives the cover plate picking mechanism 723 to move back and forth along the cover plate transfer guide rail 722, so that the cover plate picking mechanism 723 picks up the cover plate 14 and places it on the upper surface of the panel 13 of the conveying seat 102.

[0106] Combination Fig.13 As shown, in one embodiment, the fixture unloading and transferring mechanism 800 includes an unloading and transferring driving mechanism 801 , an unloading and transferring guide rail 802 , and a fixture unloading and clamping mechanism 803 .

[0107] Specifically, the material unloading and transfer driving mechanism 801 is fixedly arranged on the machine 1, the material unloading and transfer guide rail 802 is transversely arranged on the material unloading and transfer driving mechanism 801, and the fixture unloading and clamping mechanism 803 is slidably arranged on the material unloading and transfer guide rail 802. The material unloading and transfer driving mechanism 801 can drive the fixture unloading and clamping mechanism 803 to move transversely along the material unloading and transfer guide rail 802, and the fixture unloading and clamping mechanism 803 can clamp and release the fixture to transfer the fixture assembled on the conveying seat 102 to the fixture receiving mechanism 900.

[0108] The material unloading and transfer driving mechanism 801 may include a servo motor to provide a moving driving force. The fixture unloading and clamping mechanism 803 may be configured as a cylinder-driven lifting and clamping mechanism.

[0109] In one embodiment, the jig receiving mechanism 900 includes a receiving belt 901 and a receiving drive mechanism 902. The receiving drive mechanism 902 drives the receiving belt 901 to move. The receiving belt 901 is used to receive and transport the assembled jig so that an operator or other automated equipment can receive the jig with the workpiece assembled thereon.

[0110] In the present application, the automatic feeding system also includes a controller for controlling the movement of each mechanism, processing the image signal obtained by the visual inspection device 600 and sending an adjustment signal to the workpiece transfer robot 500. The controller may include basic components such as a general memory and a processing chip, and the control program may implement the basic functions of the present application based on existing open source technology or a program provided by a device manufacturer, and the present application does not make any special limitations or descriptions.

[0111] The present application provides an automatic feeding method for assembling a workpiece requiring PVD coating into a fixture, wherein the fixture includes a matching panel and a cover plate. The method is based on the above-mentioned automatic feeding system and specifically includes the following steps: S1. Place the workpiece on the workpiece feeding mechanism, place the panel on the panel silo, and place the cover on the cover feeding mechanism; S2-1, the workpiece loading mechanism moves the workpiece to be picked up to a preset position; S2-2, the panel transfer mechanism picks up the panel from the panel silo and places it on the transfer seat of the circulation transmission mechanism; S3, the workpiece transfer robot picks up the workpiece from the workpiece feeding mechanism, and moves the picked up workpiece to above the visual inspection device, the visual inspection device performs visual recognition on the workpiece to obtain the plane angle information of the workpiece, and the workpiece transfer robot adjusts the angle of the picked up workpiece according to the plane angle information of the workpiece and the preset panel position of the conveying seat so that the workpiece can be placed on the panel of the conveying seat; S4, the conveying seat moves to the next station, and the cover plate loading mechanism transfers and places the cover plate on the upper part of the upper panel of the conveying seat; S5, the fixture unloading and transferring mechanism picks up the fixture on the conveying seat and transfers it to the fixture receiving mechanism; S6. Collect the jig from the jig receiving mechanism to complete a single loading operation; S7, repeat the above steps of feeding.

[0112] Among them, the order of step S2-1 and step S2-2 can be performed simultaneously or the order can be swapped without affecting the implementation of the solution of the present application.

[0113] The automatic feeding system and method provided by the implementation mode of the present application are introduced in detail above, and the principles and implementation modes of the present application are explained by using specific embodiments. The above description is only used to help understand the method and core mechanism of the present application. At the same time, for those skilled in the art, according to the ideas of the present application, there will be changes in the specific embodiments and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An automatic feeding system for assembling a workpiece requiring PVD coating into a fixture, wherein the fixture comprises a matching panel and a cover plate, wherein the panel and the cover plate are provided with a receiving groove for placing the workpiece, and the workpiece is clamped between the panel and the cover plate, characterized in that: The automatic feeding system comprises: A machine platform, the machine platform comprising a platform for carrying; A circular transmission mechanism, the circular transmission mechanism comprising a transmission rail and a plurality of transmission seats, the transmission rail being arranged parallel to the surface of the machine platform, the transmission seats being cyclically moved along the transmission rail, the upper end surface of the transmission seat being arranged as a plane on which components can be placed, and the transmission rail comprising a starting end and an end end; A workpiece loading mechanism, which is disposed on the upper surface of the table and is used to store and transport workpieces to be assembled; A panel silo, which is disposed on the upper surface of the platen and close to the starting end of the transmission guide rail, and is used to place and transport the panel of the jig; A panel transfer mechanism, which is disposed on the upper surface of the table and close to the panel bin, and is used to pick up the panel from the panel bin and transfer it to the conveying seat; A workpiece transfer robot, which is disposed on the upper surface of the table and close to the workpiece loading mechanism, and is used to pick up the workpiece from the workpiece loading mechanism and transfer it to a panel placed on the conveying seat; A visual inspection device, the visual inspection device is arranged on the machine platform and is located in the moving path of the workpiece transfer robot, the visual inspection device performs machine vision recognition on the workpiece picked up by the workpiece transfer robot to obtain the plane angle information of the workpiece, and the workpiece transfer robot adjusts the angle of the picked up workpiece according to the plane angle information of the workpiece and the preset panel position of the conveying seat so that the workpiece can be placed on the panel of the conveying seat; A cover plate feeding mechanism, which is disposed on the upper surface of the table and close to the end of the transmission guide rail, and is used to place the cover plate of the jig and transfer the cover plate to the upper part of the panel of the transmission seat; A jig unloading and transferring mechanism, which is disposed on the upper surface of the table and close to the end of the transmission guide rail, and is used to pick up the jig on which the panel and cover plate have been assembled on the transmission seat; A jig receiving mechanism is disposed on the upper surface of the table and close to the jig unloading and transferring mechanism to receive the jig picked up by the jig unloading and transferring mechanism.

2. The automatic feeding system according to claim 1, characterized in that: The transmission guide rail includes an upper transmission rail arranged on the upper surface of the table plate and a lower transmission rail arranged on the lower surface of the table plate. The table plate is provided with a lifting window at the starting end and the end of the transmission guide rail for the vertical passage of the transmission seat. The two lifting windows are provided with a transmission lifting mechanism for lifting and lowering the transmission seat. The transmission lifting mechanism connects the upper transmission rail and the lower transmission rail. The transmission seat rises or falls between the upper transmission rail and the lower transmission rail so that the transmission seat moves cyclically along the transmission guide rail.

3. The automatic feeding system according to claim 1, characterized in that: The visual inspection device comprises an inspection light source and an inspection camera. The inspection light source is arranged upward to emit inspection light, and the inspection camera is arranged upward to capture an image of the workpiece.

4. The automatic feeding system according to claim 1, characterized in that: The panel silo comprises: A silo seat, the silo seat is fixedly arranged on the upper surface of the table; A panel bin, the lower end of which is disposed on the bin seat, and the panels are stacked vertically in the panel bin; The panel silo also includes a panel transfer assembly, a pushing guide rail and a panel pushing mechanism, wherein the panel transfer assembly and the pushing guide rail are transversely arranged on the silo seat, and the panel pushing mechanism drives the panel transfer assembly to move along the pushing guide rail; the top of the silo seat cooperates with the panel transfer assembly, and the panel transfer assembly is configured to accommodate the panel and push the panel out transversely from the bottom of the silo seat.

5. The automatic feeding system according to claim 4, characterized in that: The panel transfer mechanism comprises a panel transfer driving mechanism and a panel clamping claw. The panel clamping claw is arranged on the panel transfer driving mechanism for transverse movement. The panel clamping claw is configured to take and place the panel. The panel transfer driving mechanism drives the panel clamping claw to move transversely.

6. The automatic feeding system according to claim 1, characterized in that: The workpiece transfer robot comprises a base, a multi-axis robot arm and a suction mechanism, wherein the base is fixedly arranged on the upper surface of the table, the multi-axis robot arm is rotatably arranged on the base, and the suction mechanism is arranged at the free end of the multi-axis robot arm; the suction mechanism comprises a plurality of suction parts for sucking the workpiece; The suction part includes a telescopic driver, a suction seat, a rotary driver, a rotating shaft and a suction cup. The telescopic driver is fixedly arranged on the suction mechanism. The telescopic end of the telescopic driver is connected to the suction seat to drive the suction seat to telescopically move. The rotary driver is arranged on the suction seat to move synchronously. The rotating shaft is transmission-connected to the rotating output end of the rotary driver. The suction cup is arranged at the bottom of the rotating shaft to suck and rotate the workpiece.

7. The automatic feeding system according to claim 1, characterized in that: The workpiece loading mechanism comprises a workpiece pallet loading mechanism for storing and moving a workpiece pallet, and the workpiece pallet is used to arrange and place the workpieces; The workpiece pallet loading mechanism includes a first pallet bin, a second pallet bin and a pallet transmission mechanism arranged on the upper surface of the table plate, the pallet transmission mechanism is arranged between the first pallet bin and the second pallet bin, the first pallet bin and the second pallet bin are configured to vertically stack the workpiece pallets, and the pallet transmission mechanism is configured to translate the workpiece pallet from the first pallet bin to a position for the workpiece transfer robot to pick up the workpiece and transfer the workpiece pallet to the second pallet bin.

8. The automatic feeding system according to claim 1, characterized in that: The workpiece loading mechanism includes a workpiece hanging rail loading mechanism, and the workpiece hanging rail loading mechanism includes a frame, a workpiece bearing assembly, a workpiece suction assembly, a workpiece transfer assembly and an exchange loading assembly. The frame is fixedly arranged on the table, the workpiece transfer assembly is arranged on the frame, the workpiece suction assembly is movably arranged on the workpiece transfer assembly, and the workpiece bearing assembly and the exchange loading assembly are arranged on the table.

9. The automatic feeding system according to claim 1, characterized in that: The cover plate feeding mechanism comprises: a jig plate conveying mechanism for storing and moving a jig plate, the jig plate having the cover plate of the jig placed thereon; and a cover plate transferring mechanism for transferring the cover plate of the jig to the conveying seat; The jig tray conveying mechanism comprises a first jig tray bin, a second jig tray bin and a jig tray conveying mechanism, the first jig tray bin and the second jig tray bin vertically stack the jig tray, the jig tray conveying mechanism is arranged between the first jig tray bin and the second jig tray bin, and the jig tray conveying mechanism is configured to translate the jig tray from the first jig tray bin to a position for the cover plate transfer mechanism to pick up the cover plate and transfer the jig tray to the second jig tray bin; The cover plate transfer mechanism includes a cover plate transfer driving mechanism, a cover plate transfer guide rail and a cover plate picking mechanism. The cover plate transfer driving mechanism is laterally arranged on the cover plate transfer guide rail, and the cover plate picking mechanism is movably arranged on the cover plate transfer guide rail; the cover plate picking mechanism is configured to pick up and release the cover plate, and the cover plate transfer driving mechanism drives the cover plate picking mechanism to reciprocate along the cover plate transfer guide rail so that the cover plate picking mechanism picks up the cover plate and places it on the panel of the conveying seat.

10. An automatic loading method for assembling a workpiece requiring PVD coating into a fixture, wherein the fixture comprises a matching panel and cover plate, characterized in that: The automatic feeding method is based on the automatic feeding system according to any one of claims 1 to 9, and comprises the following steps: S1. Place the workpiece on the workpiece feeding mechanism, place the panel on the panel silo, and place the cover on the cover feeding mechanism; S2-1, the workpiece loading mechanism moves the workpiece to be picked up to a preset position; S2-2, the panel transfer mechanism picks up the panel from the panel silo and places it on the conveying seat of the circulating transmission mechanism; S3, the workpiece transfer robot picks up the workpiece from the workpiece loading mechanism, and moves the picked up workpiece to above the visual inspection device, the visual inspection device performs visual recognition on the workpiece to obtain the plane angle information of the workpiece, and the workpiece transfer robot adjusts the angle of the picked up workpiece according to the plane angle information of the workpiece and the preset panel position of the conveying seat so that the workpiece can be placed on the panel of the conveying seat; S4, the conveying seat moves to the next station, and the cover plate loading mechanism transfers and places the cover plate on the upper part of the upper panel of the conveying seat; S5, the jig unloading and transferring mechanism picks up the jig on the conveying seat and transfers it to the jig receiving mechanism; S6, collecting the jig of the jig collecting mechanism to complete a single feeding operation; S7, repeat the above steps of feeding.

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