A double-line cross-type fully automatic sandblasting system and its operation method

Abstract

The present invention provides a dual-line cross-type fully automatic sandblasting system and its operation method, comprising two A and B assembly lines that cross-transfer at a transfer station. The A assembly line sequentially connects an A feeder, a first product robot, a first AB transfer table, a second AB transfer table, a first jig robot, an A reverse sandblaster, a second jig robot, a third AB transfer table, a fourth AB transfer table, a second product robot, an A flip conveyor, a third product robot, a fifth AB transfer table, a sixth AB transfer table, a third jig robot, an A front sandblaster, a fourth jig robot, a seventh AB transfer table, an eighth AB transfer table, a fourth product robot, and an A material receiver. The present invention combines the double-sided sandblasting process into a single set of sandblasting equipment, thereby improving work efficiency and output. The cover plate and jig of the sandblasting jig are designed with a reflow process to improve the utilization rate of the sandblasting jig and reduce the time it takes to move the sandblasting jig up and down.

Description

Technical Field

[0001] The present invention belongs to the field of mechanical technology and relates to a fully automatic processing line, in particular to a double-line cross-type fully automatic sandblasting system and an operation method thereof. Background Art

[0002] In the field of electronic product surface treatment technology, sandblasting is the most common method for product surface treatment. However, at present, existing technologies and forms are in semi-automatic or single-line operation mode, resulting in low work efficiency.

[0003] 1) In the current sandblasting process, if both sides of the product need to be sandblasted, there will be two sets of sandblasting units, one for front side blasting and the other for back side blasting.

[0004] 2) Currently, the sandblasting process is becoming more and more sophisticated, especially for the performance processing of non-standard automated products. The sandblasting of electronic products requires jigs and jig covers to protect the products. The existing process is usually a single-line process, which requires the jig to be moved and loaded and unloaded separately, thereby increasing the transfer equipment and taking up working hours.

[0005] 3) Currently, the most common sandblasting systems are composed of several robots working together with a sandblasting unit, and even require several sets of transfer modules. This not only increases the types and quantity of equipment, increases costs, but also increases the complexity of the processing line, prolongs operating hours, and reduces production efficiency.

[0006] For example, a Chinese patent document has disclosed an automated sandblasting production system [Chinese Patent No.: CN202210342527.7], and the present invention relates to an automated sandblasting production system. The automated sandblasting production system described in the present invention includes: a double-station conveying device including a first conveying mechanism, a diverter conveying mechanism, and a second conveying mechanism with the same conveying direction and arranged in sequence along the conveying direction, the first conveying mechanism and the second conveying mechanism are respectively provided with a first station and a second station, the diverter conveying mechanism is respectively docked with the first conveying mechanism and the second conveying mechanism at both ends along the conveying direction, the second conveying mechanism includes an empty basket conveying part and a full basket conveying part, the diverter conveying mechanism moves back and forth between the empty basket conveying part and the full basket conveying part; the sandblasting equipment has two sets and is symmetrically arranged on one side of the double-station conveying equipment. The automated sandblasting production system described in the present invention has the advantages of high production efficiency and small footprint.

[0007] The above technical solution is a single-threaded production line. Therefore, if both sides of a product need to be sandblasted, two sets of sandblasting equipment will be required, one for the front and one for the back. This results in low equipment utilization and low output. Furthermore, as the jig moves from the infeed to the outfeed, it needs to be returned to the infeed. This return transfer adds additional steps, and the jig loading and unloading process takes up additional man-hours, further reducing work efficiency. Summary of the Invention

[0008] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a dual-line cross-type fully automatic sandblasting system and its operation method that can operate synchronously and in parallel to double the work efficiency and output.

[0009] The object of the present invention can be achieved by the following technical solutions: a dual-line cross-type fully automatic sandblasting system, comprising two A and B assembly lines that cross-transfer at a transfer station, wherein the A assembly line is connected in sequence from feeding to discharging to an A feeder, a first product robot, a first AB transfer table and a second AB transfer table, a first jig robot, an A reverse sandblasting machine, a second jig robot, a third AB transfer table and a fourth AB transfer table, a second product robot, an A flip conveyor, a third product robot, a fifth AB transfer table and a sixth AB transfer table, a third jig robot, an A front sandblasting machine, a fourth jig robot, a seventh AB transfer table and an eighth AB transfer table, a fourth product robot, and an A material receiver;

[0010] The B production line is connected in sequence from feeding to discharging, namely, the B feeder, the second product robot, the third AB transfer table and the fourth AB transfer table, the second jig robot, the B reverse sandblasting machine, the first jig robot, the first AB transfer table and the second AB transfer table, the first product robot, the B flip conveyor table, the fourth product robot, the seventh AB transfer table and the eighth AB transfer table, the fourth jig robot, the B front sandblasting machine, the third jig robot, the fifth AB transfer table and the sixth AB transfer table, the third product robot, and the B material receiving machine.

[0011] In the above-mentioned double-line cross-type fully automatic sandblasting system, the A feeder or B feeder includes a body with an operating table and a material storage table, the operating table is provided with a loading station, a material picking station, a code scanning and turning station, the material storage table is connected to the rear of the code scanning and turning station, and good product boxes and defective product boxes are placed on the material storage table, an upper plate lifting mechanism is provided below the loading station, and the upper part of the loading station is driven by the loading transfer component to drive the transfer plate rack; a lower plate lifting mechanism is provided below the material picking station, and the upper part of the material picking station is driven by the material picking transfer component to drive the transfer rack; the code scanning and turning station has a code scanning transfer component, and the code scanning transfer component drives the code scanning plate in a horizontal movement, and at least one loading platform is provided on the code scanning plate, a code scanning gun is provided correspondingly on the side of the loading platform, and a lifting component is erected on the side of the code scanning transfer component, and the lifting component lifts and drives the suction rack, and a suction plate corresponding to the loading platform is provided at the bottom of the suction rack.

[0012] In the above-mentioned dual-line cross-type fully automatic sandblasting system, the upper plate lifting mechanism or the lower plate lifting mechanism includes a through opening located on the operating table, a plurality of limit blocks and at least one push-clamping cylinder are arranged on the periphery of the through opening, and a lifting platform is arranged below the through opening, and the lifting platform is fixedly connected to the lifting belt, and the lifting belt is tensioned and sleeved on the periphery of the main pulley and the slave pulley, and the main pulley is connected by a lifting motor drive.

[0013] In the above-mentioned dual-line cross-type fully automatic sandblasting system, the loading and transferring component or the material picking and transferring component includes a parallel translation electric cylinder and a slide rail, and the translation block of the translation electric cylinder is fixedly connected to a shifting plate seat or a material shifting seat. The translation electric cylinder of the loading and transferring component is arranged perpendicular to the translation electric cylinder of the material picking and transferring component, and the bottom of the shifting plate seat or the material shifting seat is embedded in the corresponding slide rail through a slider to form a sliding connection.

[0014] In the above-mentioned double-line cross-type fully automatic sandblasting system, a lifting cylinder is fixedly installed on the plate transfer seat, the bottom of the lifting cylinder drives the lifting plate, the lifting plate is fixedly installed with a clamping cylinder, and the clamping cylinder drives the plate transfer frame to open and close; limiters are fixedly installed on both sides of the lifting cylinder, and corresponding limit blocks are set on the lifting plate, and the limiters and the limit blocks are confronted with each other up and down.

[0015] In the above-mentioned dual-line cross-type fully automatic sandblasting system, a vertical electric cylinder is fixedly installed on the material moving seat, the vertical block of the vertical electric cylinder is fixedly connected to the material moving rack, a horizontal cylinder is installed at the bottom of the material moving rack, the telescopic rod of the horizontal cylinder is fixedly connected to the adjustment plate, and at least one material suction part is provided on the bottom surface of the adjustment plate.

[0016] In the above-mentioned dual-line cross-type fully automatic sandblasting system, the code scanning and transferring assembly includes a parallel electric cylinder and a guide rail arranged in parallel. The translation block of the parallel electric cylinder is fixedly connected to the code scanning plate, and the bottom of the code scanning plate is embedded in the guide rail through the guide block to form a sliding connection.

[0017] In the above-mentioned dual-line cross-type fully automatic sandblasting system, the first AB turntable or the second AB turntable or the third AB turntable or the fourth AB turntable includes a table body, a material tray station is arranged on the top surface of the table body, a vertical frame is fixedly installed on the side of the material tray station, a lifting drive is fixedly installed on the vertical frame, and the lifting rod of the lifting drive is fixedly connected to a cover grabbing frame, and a plurality of cover grabbing stations are arranged on the bottom surface of the cover grabbing frame, and the cover grabbing frame is located directly above the material tray station.

[0018] In the above-mentioned double-line cross-type fully automatic sandblasting system, the A flip conveyor table or the B flip conveyor table includes a body with a table plate, a linear transfer mechanism is arranged on the table plate, the linear transfer mechanism translates and drives a substrate, the substrate is turned and connected to the jig plate through a rotator, at least one guide rail is arranged in parallel on the side of the linear transfer mechanism, a guide block is fixed on the bottom surface of the substrate, and the guide block is embedded in the guide rail to form a sliding connection; a truss is erected above the linear transfer mechanism, and a lifter is arranged on the truss, the lifter lifts and drives the suction frame, and the suction frame is arranged correspondingly above the jig plate.

[0019] In the above-mentioned dual-line cross-type fully automatic sandblasting system, the linear transfer mechanism includes a conveying motor, a driving pulley and a driven pulley are hinged on the table, the driving shaft of the conveying motor is fixedly connected to the central axis of the driving pulley, the outer periphery of the driving pulley and the driven pulley are tensioned and sleeved with a transmission belt, and the bottom of the base plate is fixedly connected to the transmission belt by a fixing part.

[0020] In the above-mentioned double-line cross-type fully automatic sandblasting system, limit seats are arranged on both sides of the rotator on the substrate, and a rotation limiter is passed through the limit seat. A rotation limit plate is protruded on the bottom surface of the substrate, and the rotation limit plate is located between the two rotation limiters.

[0021] In the above-mentioned double-line cross-type fully automatic sandblasting system, at least two sets of the linear transfer mechanisms, the base plate, the rotator and the jig plate are arranged in parallel on the table, and at least two sets of the lifters and the suction racks are correspondingly arranged on the truss, and the suction racks are arranged in one-to-one correspondence with the jig plates.

[0022] The operation method of the dual-line cross-type fully automatic sandblasting system includes the following steps:

[0023] 1. A production line operation process:

[0024] 1) The A feeder outputs the fully loaded tray, and the first product manipulator moves the products in batches to the reverse fixtures on the first AB transfer table and the second AB transfer table for positioning;

[0025] 2) The first AB transfer station and the second AB transfer station are used to cover the product in the reverse jig with a reverse cover plate, and then the first jig robot removes the reverse jig, product and reverse cover plate and transfers them to the A reverse sandblasting machine for sandblasting of the product reverse side;

[0026] 3) The second fixture robot removes the back fixture, product and back cover together and transfers them to the third AB transfer table and the fourth AB transfer table, and removes the back cover from the product through the third AB transfer table and the fourth AB transfer table;

[0027] 4) The second product robot moves the products in batches to the A flip conveyor table and flips the products from the back to the front;

[0028] 5) The third product robot moves the products in batches to the front fixtures on the fifth AB transfer table and the sixth AB transfer table for positioning;

[0029] 6) The front cover plate is placed on the product in the front fixture through the fifth AB transfer station and the sixth AB transfer station, and then the third fixture robot takes away the front fixture, product and front cover plate and transfers them to the A front sandblasting machine for front sandblasting of the product;

[0030] 7) The fourth fixture robot takes away the front fixture, product and front cover together and transfers them to the seventh AB transfer table and the eighth AB transfer table, and removes the front cover on the product through the seventh AB transfer table and the eighth AB transfer table;

[0031] 8) The fourth product robot moves the products in batches to the A receiving machine for receiving operation;

[0032] 2. Operation process of B assembly line:

[0033] 1) The B feeder outputs the fully loaded tray, and the second product robot moves the products in batches to the reverse fixtures on the third AB transfer table and the fourth AB transfer table for positioning;

[0034] 2) The back cover is placed on the product in the back jig through the third AB transfer station and the fourth AB transfer station, and then the second jig robot takes away the back jig, product and back cover and transfers them to the B back sandblasting machine for sandblasting of the product back;

[0035] 3) The first fixture robot removes the back fixture, product and back cover together and transfers them to the first AB transfer table and the second AB transfer table, and removes the back cover from the product through the first AB transfer table and the second AB transfer table;

[0036] 4) The first product manipulator moves the products in batches to the B flipping conveyor table and flips the products from the back to the front;

[0037] 5) The fourth product robot moves the products in batches to the front fixtures on the seventh AB transfer table and the eighth AB transfer table for positioning;

[0038] 6) The front cover plate is placed on the product in the front fixture through the seventh AB transfer station and the eighth AB transfer station, and then the fourth fixture robot takes away the front fixture, product and front cover plate and transfers them to the B front sandblasting machine for product front sandblasting operation;

[0039] 7) The front jig, product and front cover are taken away together by the third jig robot and transferred to the fifth AB transfer table and the sixth AB transfer table, and the front cover on the product is removed by the fifth AB transfer table and the sixth AB transfer table;

[0040] 8) The third product robot moves the products batch by batch to the B receiving machine for receiving operation.

[0041] The operating method of the above-mentioned dual-line cross-type fully automatic sandblasting system includes the following steps:

[0042] 1. Reflow path of the reverse fixture:

[0043] 1) Use the first fixture manipulator to move the reverse fixtures on the first AB transfer table and the second AB transfer table to the A reverse sandblasting machine;

[0044] 2) Use the second fixture robot to move the reverse side fixture output by the A reverse side sandblasting machine to the third AB transfer table and the fourth AB transfer table;

[0045] 3) The second fixture robot then moves the reverse fixtures on the third AB transfer table and the fourth AB transfer table to the B reverse sandblasting machine;

[0046] 4) Use the first fixture robot to move the back side fixture output by the B back side sandblasting machine to the first AB transfer table and the second AB transfer table;

[0047] 2. Return path of the front fixture:

[0048] 1) Use the third fixture manipulator to move the front fixtures on the fifth AB transfer table and the sixth AB transfer table to the A front sandblasting machine;

[0049] 2) Use the fourth fixture robot to move the front fixture output by the A front sandblasting machine to the seventh AB transfer table and the eighth AB transfer table;

[0050] 3) Then, the fourth fixture robot moves the front fixtures on the seventh AB transfer table and the eighth AB transfer table to the B front sandblasting machine;

[0051] 4) The front jig output by the B front sandblasting machine is transferred to the fifth AB transfer table and the sixth AB transfer table through the third jig robot.

[0052] In the operation method of the above-mentioned double-line cross-type fully automatic sandblasting system, a control signal for covering the cover plate is sent to the first AB turntable and the second AB turntable through the first product robot, and a control signal for taking the cover plate is sent to the first AB turntable and the second AB turntable through the first jig robot; a control signal for covering the cover plate is sent to the third AB turntable and the fourth AB turntable through the second product robot, and a control signal for taking the cover plate is sent to the third AB turntable and the fourth AB turntable through the second jig robot; a control signal for covering the cover plate is sent to the fifth AB turntable and the sixth AB turntable through the third product robot, and a control signal for taking the cover plate is sent to the fifth AB turntable and the sixth AB turntable through the third jig robot; a control signal for covering the cover plate is sent to the seventh AB turntable and the eighth AB turntable through the fourth jig robot, and a control signal for taking the cover plate is sent to the seventh AB turntable and the eighth AB turntable through the fourth jig robot.

[0053] Compared with the existing technology, this dual-line cross-type fully automatic sandblasting system and its operation method have the following beneficial effects:

[0054] 1. The present invention solves the problem of front and back side parallel sandblasting process, combines the double-sided sandblasting process into one set of sandblasting equipment, greatly saving the cost of non-standard equipment, while improving work efficiency and output.

[0055] 2. During the sandblasting loading and unloading process, the cover plate and the jig of the sandblasting jig are designed with a reflux process, so that the jig and the cover plate can reflux in an orderly cycle, avoiding the one-way path of the sandblasting jig, improving the utilization rate of the sandblasting jig, and reducing the time taken for the sandblasting jig to be loaded and unloaded.

[0056] 3. The present invention scientifically applies multi-system integrated design, robot program, PLC program, IO control, and information acquisition system, and integrates the functions of robot, sandblasting machine, feeder, material receiver, transfer table, flip conveyor table, NG throwing and so on, to optimize the sandblasting line and have market competitiveness.

[0057] 4. The feeder adopts a transfer structure to reasonably connect the scanning process, and inspect the products in advance, so as to screen out defective products in advance, avoid subsequent waste of processing resources, increase processing costs, and affect the yield of finished products.

[0058] 5. The feeder adopts a transfer structure to rationally connect the turning process. Before entering the formal processing, the feeding direction is adjusted in advance to ensure the effectiveness and accuracy of the processing operation, and further improve the yield and quality of the finished product.

[0059] 6. The flip conveyor table realizes the product flipping operation through lifting and transferring materials by the robot, while ensuring the accuracy of product positioning to meet the feeding requirements of subsequent processes.

[0060] 7. The flip conveyor table realizes the turning operation of the product by rotation, while ensuring the accuracy of product positioning to meet the feeding requirements of subsequent processes.

[0061] 8. The turning conveyor table is equipped with multiple synchronous workstations, thereby doubling the output and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 It is a three-dimensional structural diagram of the feeder in the double-line cross-type fully automatic sandblasting system.

[0063] Figure 2 This is a top view of the feeder structure in a double-line cross-type fully automatic sandblasting system.

[0064] Figure 3 This is a three-dimensional structural diagram of the turntable in a dual-line cross-type fully automatic sandblasting system.

[0065] Figure 4 It is a three-dimensional structural diagram of the flip conveyor table in the double-line cross-type fully automatic sandblasting system.

[0066] Figure 5 This is a side view of the structure of the flip conveyor table in the double-line cross-type fully automatic sandblasting system.

[0067] Figure 6 This is a top view of the flip conveyor table in the double-line cross-type fully automatic sandblasting system.

[0068] Figure 7 This is a three-dimensional structural diagram of the jig for the flip conveyor table in a dual-line cross-type fully automatic sandblasting system.

[0069] Figure 8 It is a top view of the double-line cross-type fully automatic sandblasting system.

[0070] Figures 1 to 2Among them, 1. Machine body; 2. Horizontal electric cylinder; 3. Slide rail; 4. Plate transfer base; 5. Lifting cylinder; 6. Clamping cylinder; 7. Plate transfer rack; 8. Limiter; 9. Material transfer base; 10. Vertical electric cylinder; 11. Material transfer rack; 12. Horizontal cylinder; 13. Positioning plate; 14. Loading platform; 15. Barcode scanner; 16. Vertical electric cylinder; 17. Suction rack; 18. Storage platform; 19. Good product box; 20. Bad product box.

[0071] Figure 3 In the figure, 1. platform body; 2. vertical frame; 3. lifting drive; 4. cover grabbing frame.

[0072] Figures 4 to 7 Among them, 1. Machine body; 2. Table; 3. Conveyor belt; 4. Guide rail; 5. Base plate; 6. Rotator; 7. Jig plate; 8. Limit seat; 9. Rotation limiter; 10. Rotation limit plate; 11. Truss; 12. Lifter; 13. Suction rack; 14. Vertical rail; 15. Lifting limit plate; 16. Lifting limiter.

[0073] Figure 8 Among them, 1. A feeder; 2. First product robot; 3. First AB transfer table; 4. Second AB transfer table; 5. First fixture robot; 6. A reverse sandblasting machine; 7. Second fixture robot; 8. Third AB transfer table; 9. Fourth AB transfer table; 10. Second product robot; 11. A flip conveyor table; 12. Third product robot; 13. Fifth AB transfer table; 14. Sixth AB transfer table; 15. Third fixture robot; 16. A front sandblasting machine; 17. Fourth fixture robot; 18. Seventh AB transfer table; 19. Eighth AB transfer table; 20. Fourth product robot; 21. A receiving machine; 22. B feeder; 23. B reverse sandblasting machine; 24. B flip conveyor table; 25. B front sandblasting machine; 26. B receiving machine. DETAILED DESCRIPTION

[0074] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments. Example 1

[0075] like Figure 1 and Figure 2As shown, feeder A or feeder B includes a body 1 with an operation table and a storage table 18, on which a loading station, a picking station, a code scanning and turning station are arranged, and the storage table 18 is connected to the rear of the code scanning and turning station, and good product boxes 19 and bad product boxes 20 are placed on the storage table 18, an upper plate lifting mechanism is arranged below the loading station, and the upper part of the loading station is driven by the loading transfer assembly to drive the transfer plate frame 7; a lower plate lifting mechanism is arranged below the picking station, and the upper part of the picking station is driven by the picking transfer assembly to drive the transfer frame 11; the code scanning and turning station has a code scanning transfer assembly, and the code scanning transfer assembly drives the code scanning plate in a horizontal movement, and at least one loading platform 14 is arranged on the code scanning plate, and a code scanning gun 15 is arranged correspondingly on the side of the loading platform 14, and a lifting assembly is erected on the side of the code scanning transfer assembly, and the lifting assembly lifts and drives the suction rack 17, and a suction plate corresponding to the loading platform 14 is arranged at the bottom of the suction rack 17.

[0076] The upper or lower plate lifting mechanism includes an opening on the operating table, with several stoppers and at least one push-and-clamp cylinder positioned around the opening. Below the opening, a lifting platform is secured to a lifting belt, which is tensioned and sleeved around the outer peripheries of the primary and secondary pulleys. The primary pulleys are driven by a lifting motor. The motor drives the lifting belt in reverse, thereby driving the lifting platform up and down, raising the trays for feeding or lowering them for closing. Stoppers around the opening limit the trays' position, and the push-and-clamp cylinders press the trays into place.

[0077] The loading and transferring assembly or the picking and transferring assembly includes a parallel translation electric cylinder 2 and a slide rail 3. The translation block of the translation electric cylinder 2 is fixedly connected to a shifting plate seat 4 or a material shifting seat 9. The translation electric cylinder 2 of the loading and transferring assembly is arranged perpendicular to the translation electric cylinder 2 of the picking and transferring assembly. The bottom of the shifting plate seat 4 or the material shifting seat 9 is embedded in the corresponding slide rail 3 through a slider to form a sliding connection.

[0078] The loading and transfer assembly's translational electric cylinder 2 is positioned along the X-direction, driving the tray transfer frame 7 along the X-direction. The retrieving and transfer assembly's translational electric cylinder 2 is positioned along the Y-direction, driving the tray transfer frame 11 along the Y-direction. The sliding interaction between the slide rail 3 and the slider provides guidance during translation, preventing deviation and enhancing smoothness during movement.

[0079] The disc shifting frame 4 is fixed with a lifting cylinder 5. The bottom of the lifting cylinder 5 drives the lifting plate. The lifting plate is fixed with a clamping cylinder 6. The clamping cylinder 6 opens and closes to drive the disc shifting frame 7. Limiters 8 are fixed on both sides of the lifting cylinder 5. Limit blocks are correspondingly set on the lifting plate. The limiters 8 and the limit blocks are in vertical confrontation. The disc shifting frame 7 is driven up and down by the lifting cylinder 5. The disc shifting frame 7 is composed of two clamping frames. The clamping cylinder 6 drives the two clamping frames to open and close, thereby releasing or clamping the material disc. When the disc shifting frame 7 rises to the limit position, the limit block abuts against the limiter 8 to form a limit block, thereby limiting the rising height of the disc shifting frame 7.

[0080] A vertical electric cylinder 10 is fixed to the material transfer base 9. The vertical block of this cylinder 10 is connected to the material transfer frame 11. A horizontal cylinder 12 is mounted at the bottom of the material transfer frame 11. The telescopic rod of this cylinder 12 is connected to a positioning plate 13. At least one material suction unit is located on the bottom surface of this positioning plate 13. The vertical electric cylinder 10 drives the material transfer frame 11 in reciprocating motion. The horizontal cylinder 12 is positioned along the X-axis and adjusts the positioning plate 13's horizontal position along the X-axis. It also coordinates with the material removal and transfer assembly to adjust the positioning plate 13's horizontal position along the Y-axis, ensuring precise alignment of the suction unit with the products on the tray.

[0081] The barcode scanning and transfer assembly consists of parallel horizontal electric cylinders and guide rails. The horizontal electric cylinder's translation block is fixedly connected to the barcode scanning plate, while the bottom of the barcode scanning plate is clipped onto the guide rails via guide blocks, forming a sliding connection. The horizontal electric cylinder is arranged along the Y direction, parallel to the translation electric cylinder 2 of the reclaiming and transfer assembly. The horizontal electric cylinder drives the barcode scanning plate in reciprocating Y-direction translation. The sliding interaction between the guide rails and guide blocks provides guidance during translation, preventing deviation and improving smoothness during movement.

[0082] The loading platform 14 is equipped with a dosing assembly, which includes a positioning bar and at least one dosing pin. The product is provided with a slot and a dosing hole. When the product is placed on the loading platform 14, the dosing bar extends into the slot, and the dosing pin extends into the corresponding dosing hole, thereby achieving precise positioning of the product.

[0083] The lifting assembly consists of a vertical electric cylinder 16 and vertical rails, arranged in parallel. The vertical block of the vertical electric cylinder 16 is fixedly connected to the suction frame 17. The back of the suction frame 17 is clipped onto the vertical rails via vertical blocks, forming a sliding connection. The vertical electric cylinder 16 is arranged along the Z direction. The vertical electric cylinder 16 drives the suction frame 17 to rise and fall reciprocally in the Z direction. The sliding cooperation between the vertical rails and the vertical blocks provides guidance during lifting to prevent deviation and improves stability during the lifting process.

[0084] The operation process of feeder A or feeder B is as follows:

[0085] 1. The tray is lifted up by the upper tray lifting mechanism, and the tray at the top position is fixed by the limit block and the push-clamp cylinder of the loading station. The loading and transferring assembly drives the tray transfer frame 7 to move above the tray, and the tray transfer frame 7 descends and clamps the tray at the top position, and then the loading and transferring assembly transports the tray transfer frame 7 to the unloading station;

[0086] 2. The transferred tray is fixed by the limit block and the push-clamp cylinder of the material taking station. The material taking and transferring assembly drives the transfer rack 11 to move above the tray. The transfer rack 11 descends and sucks some products from the tray until the tray is empty. The lower tray lifting mechanism drives the tray down.

[0087] 3. The material transfer assembly drives the material transfer rack 11 to move above the code scanning plate, places the products one by one on several loading platforms 14 to form a positioning, and scans them through the code scanning gun 15. The scanned code information is fed back to the server control system to bind the products;

[0088] 4. The code scanning and loading assembly moves the code scanning plate horizontally to the bottom of the suction rack 17. The lifting assembly lowers the suction rack 17 to suck the product on the loading platform 14 through the suction plate. The robot moves the picking plate to the bottom of the suction plate and takes the product away. At this time, the product is turned from the front to the back;

[0089] 5. After scanning the code and testing, if there are defective products in each group of products, the robot arm is controlled to classify the products and discard them. The products with damaged QR codes are thrown into the defective product box 20, and the remaining qualified products are thrown into the good product box 19.

[0090] The structure of the A receiving machine or the B receiving machine is similar to that of the A feeding machine or the B feeding machine, except that the material storage table 18 is missing. The A receiving machine or the B receiving machine is the reverse operation process of the A feeding machine or the B feeding machine. Example 2

[0091] like Figure 3 As shown, the first AB transfer table or the second AB transfer table or the third AB transfer table or the fourth AB transfer table includes a table body 1, a material tray station is arranged on the top surface of the table body 1, a vertical frame 2 is fixed on the side of the material tray station, a lifting drive 3 is fixed on the vertical frame 2, the lifting rod of the lifting drive 3 is fixedly connected to the cover grabbing frame 4, a plurality of cover grabbing stations are arranged on the bottom surface of the cover grabbing frame 4, and the cover grabbing frame 4 is located directly above the material tray station.

[0092] The material tray is placed on the material tray station by a manipulator, and the lifting driver 3 drives the cover grabbing frame 4 to descend, thereby covering the jig cover or removing the jig cover. Example 3

[0093] like Figures 4 to 7As shown, the A flip conveyor platform or the B flip conveyor platform includes a body 1 with a table plate 2, a linear transfer mechanism is provided on the table plate 2, a translationally driven substrate 5 is provided on the linear transfer mechanism, and the substrate 5 is connected to the jig plate 7 by a rotator 6, a truss 11 is erected above the linear transfer mechanism, a lifter 12 is provided on the truss 11, the lifter 12 lifts and drives a suction rack 13, and the suction rack 13 is correspondingly provided above the jig plate 7.

[0094] The rotator 6 is specifically a rotary cylinder. The lifter 12 is specifically any one of a lifting cylinder, a hydraulic cylinder, and an electric push rod. Several suction stations are arranged on the bottom surface of the suction rack 13, and several product stations are arranged on the fixture plate 7. Positioning pins and limit blocks are protruded from the product stations, corresponding to the products. The suction stations correspond to the product stations in a one-to-one manner.

[0095] At least one guide rail 4 is arranged parallel to the side of the linear motion mechanism. A guide block is fixed to the bottom surface of the base plate 5, correspondingly engaging the guide rail 4 to form a sliding connection. This sliding connection between the guide rail 4 and the guide block not only provides guidance for the linear translation of the jig plate 7, preventing displacement, but also improves stability during movement.

[0096] The linear transfer mechanism includes a conveying motor, a driving pulley and a driven pulley hinged on the table 2, the driving shaft of the conveying motor is fixedly connected to the central axis of the driving pulley, the outer periphery of the driving pulley and the driven pulley are tensionedly sleeved with a transmission belt 3, and the bottom of the base plate 5 is fixedly connected to the transmission belt 3 through a fixing part.

[0097] The conveyor motor drives the active pulley to rotate clockwise or counterclockwise, which, through friction, drives the transmission belt 3 and the driven pulley to rotate clockwise or counterclockwise, synchronously driving the substrate 5 to translate in the forward or reverse direction. There are two guide rails 4, both parallel to the transmission belt 3 and symmetrically located on either side of it.

[0098] On the base plate 5, stopper seats 8 are positioned opposite each other on either side of the rotator 6. Rotational stoppers 9 are threaded through the stopper seats 8. A rotational stopper plate 10 is protruding from the bottom surface of the base plate 5, located between the two rotational stoppers 9. The two rotational stoppers 9 form a 180-degree angle, and the buffer heads of the two rotational stoppers 9 are arranged in the same direction. Therefore, when the rotator 6 drives the jig plate 7 to rotate 180 degrees, the rotational stoppers 9 provide buffering and blocking, thereby ensuring the accuracy of the jig plate 7's rotation.

[0099] A vertical rail 14 is fixed to the material suction frame 13, and a corresponding slider is fixed to the truss 11. The vertical rail 14 is arranged parallel to the lifter 12, and the slider is embedded in the vertical rail 14 to form a sliding connection. The sliding connection between the vertical rail 14 and the slider can provide guidance for the vertical lifting of the material suction frame 13 to prevent movement and deviation, and can also improve stability during the lifting process.

[0100] A lifting limit plate 15 is installed on the top of the vertical rail 14, and a lifting limiter 16 is installed on the truss 11 beside the slider, with the buffer head of the lifting limiter 16 facing the lifting limit plate 15. The lifter 12 drives the suction frame 13 to descend, and the vertical rail 14 drives the lifting limit plate 15 to move downward synchronously until the lifting limit plate 15 contacts and abuts the buffer head of the lifting limiter 16, that is, the suction frame 13 reaches the lowest limit and is blocked by the lifting limiter 16.

[0101] At least two sets of linear transfer mechanisms, a base plate 5, a rotator 6, and a jig plate 7 are arranged in parallel on the platen 2. At least two sets of lifters 12 and suction racks 13 are correspondingly arranged on the truss 11. The suction racks 13 are arranged one-to-one with the jig plates 7. This forms at least a dual-station structure, allowing jig plates 7 at adjacent stations to work interactively through staggered translation. This prevents adjacent jig plates 7 from interfering with each other during flipping and turning, and greatly improves work efficiency.

[0102] The working process of the A flip conveyor table or B flip conveyor table is as follows:

[0103] 1. Drive the suction rack 13 upward through the lifter 12;

[0104] 2. Use the suction claw 19 of the manipulator to clamp 4 products at a time and place them under the suction rack 13;

[0105] 3. The suction rack 13 sucks 4 products at a time, and the suction claw 19 releases the products and moves them away. Then the lifter 12 drives the suction rack 13 down to place the products on the 4 product positions of the fixture plate 7 and position them, completing the flipping action;

[0106] 4. The lifter 12 drives the suction rack 13 to rise, and the rotator 6 drives the fixture plate 7 to rotate 180 degrees. The product changes to the opposite side and enters the next process first;

[0107] 5. The linear transfer mechanism drives the jig plate 7 to retreat and enter the next process. The adjacent linear transfer mechanism drives the jig plate 7 to feed and repeat steps 1 to 4. The two jig plates 7 work alternately. Example 4

[0108] Based on the above embodiments 1 to 3, this embodiment is specifically as follows:

[0109] like Figure 8As shown, the double-line cross-type fully automatic sandblasting system includes two A and B assembly lines that cross each other at the transfer station. From feeding to discharging, the A assembly line is connected in sequence to the A feeder 1, the first product robot 2, the first AB transfer table 3 and the second AB transfer table 4, the first fixture robot 5, the A reverse sandblasting machine 6, the second fixture robot 7, the third AB transfer table 8 and the fourth AB transfer table 9, the second product robot 10, the A flip conveyor 11, the third product robot 12, the fifth AB transfer table 13 and the sixth AB transfer table 14, the third fixture robot 15, the A front sandblasting machine 16, the fourth fixture robot 17, the seventh AB transfer table 18 and the eighth AB transfer table 19, the fourth product robot 20, and the A material receiver 21;

[0110] From feeding to discharging, the B production line is connected in sequence to the B feeder 22, the second product robot 10, the third AB transfer table 8 and the fourth AB transfer table 9, the second fixture robot 7, the B reverse sandblasting machine 23, the first fixture robot 5, the first AB transfer table 3 and the second AB transfer table 4, the first product robot 2, the B flip conveyor table 24, the fourth product robot 20, the seventh AB transfer table 18 and the eighth AB transfer table 19, the fourth fixture robot 17, the B front sandblasting machine 25, the third fixture robot 15, the fifth AB transfer table 13 and the sixth AB transfer table 14, the third product robot 12, and the B material receiver 26.

[0111] The operation method of the dual-line cross-type fully automatic sandblasting system includes the following steps:

[0112] 1. A production line operation process:

[0113] 1) The A feeder 1 outputs a fully loaded tray, and the first product manipulator 2 moves the products in batches to the reverse fixtures on the first AB transfer table 3 and the second AB transfer table 4 for positioning;

[0114] 2) The first AB transfer station 3 and the second AB transfer station 4 are used to cover the product in the reverse jig with a reverse cover plate, and then the first jig robot 5 takes away the reverse jig, the product and the reverse cover plate and transfers them to the A reverse sandblasting machine 6 for sandblasting of the product reverse side;

[0115] 3) The second jig robot 7 takes away the back jig, the product and the back cover and transfers them to the third AB transfer table 8 and the fourth AB transfer table 9. The back cover on the product is removed by the third AB transfer table 8 and the fourth AB transfer table 9;

[0116] 4) The second product manipulator 10 moves the products in batches to the A flipping conveyor 11 and flips the products from the back to the front;

[0117] 5) The third product manipulator 12 transfers the products in batches to the front jigs on the fifth AB transfer table 13 and the sixth AB transfer table 14 for positioning;

[0118] 6) The front cover plate is placed on the product in the front jig through the fifth AB transfer station 13 and the sixth AB transfer station 14, and then the third jig robot 15 takes away the front jig, product and front cover plate and transfers them to the A front sandblasting machine 16 for front sandblasting of the product;

[0119] 7) The fourth fixture robot 17 takes away the front fixture, product and front cover together and transfers them to the seventh AB transfer table 18 and the eighth AB transfer table 19. The seventh AB transfer table 18 and the eighth AB transfer table 19 remove the front cover from the product;

[0120] 8) The fourth product manipulator 20 moves the products in batches to the A receiving machine 21 for receiving operation;

[0121] 2. Operation process of B assembly line:

[0122] 1) The B feeder 22 outputs the fully loaded tray, and the second product manipulator 10 moves the products in batches to the reverse fixtures on the third AB transfer table 8 and the fourth AB transfer table 9 for positioning;

[0123] 2) The back cover plate is placed on the product in the back jig by the third AB transfer station 8 and the fourth AB transfer station 9, and then the second jig robot 7 takes away the back jig, product and back cover plate and transfers them to the B back sandblasting machine 23 for sandblasting of the product back;

[0124] 3) The first fixture robot 5 takes away the back fixture, the product and the back cover together and transfers them to the first AB transfer table 3 and the second AB transfer table 4. The first AB transfer table 3 and the second AB transfer table 4 remove the back cover from the product.

[0125] 4) The first product manipulator 2 moves the products in batches to the B flipping conveyor 24 and flips the products from the back to the front;

[0126] 5) The fourth product manipulator 20 transfers the products in batches to the front jigs on the seventh AB transfer table 18 and the eighth AB transfer table 19 for positioning;

[0127] 6) The seventh AB transfer station 18 and the eighth AB transfer station 19 are used to cover the product in the front jig with a front cover plate, and then the fourth jig robot 17 takes away the front jig, product and front cover plate and transfers them to the B front sandblasting machine 25 for front sandblasting of the product;

[0128] 7) The third fixture robot 15 takes away the front fixture, product and front cover together and transfers them to the fifth AB transfer table 13 and the sixth AB transfer table 14. The fifth AB transfer table 13 and the sixth AB transfer table 14 remove the front cover from the product.

[0129] 8) The third product manipulator 12 moves the products batch by batch to the B receiving machine 26 for receiving operation.

[0130] The operation method of the double-line cross-type fully automatic sandblasting system also includes the following steps:

[0131] 1. Reflow path of the reverse fixture:

[0132] 1) The first fixture robot 5 moves the reverse side fixtures on the first AB transfer table 3 and the second AB transfer table 4 to the A reverse side sandblasting machine 6;

[0133] 2) The second jig robot 7 transfers the reverse jig outputted from the A reverse sandblasting machine 6 to the third AB transfer table 8 and the fourth AB transfer table 9;

[0134] 3) The second jig robot 7 then moves the reverse jigs on the third AB transfer table 8 and the fourth AB transfer table 9 to the B reverse sandblasting machine 23;

[0135] 4) The first jig robot 5 moves the back jig outputted from the B back sandblasting machine 23 to the first AB transfer table 3 and the second AB transfer table 4;

[0136] 2. Return path of the front fixture:

[0137] 1) The front jigs on the fifth AB transfer table 13 and the sixth AB transfer table 14 are moved to the A front sandblasting machine 16 by the third jig manipulator 15;

[0138] 2) The front jig outputted from the A front sandblasting machine 16 is transferred to the seventh AB transfer table 18 and the eighth AB transfer table 19 by the fourth jig manipulator 17;

[0139] 3) The fourth fixture robot 17 then moves the front fixtures on the seventh AB transfer table 18 and the eighth AB transfer table 19 to the B front sandblasting machine 25;

[0140] 4) The front jig outputted from the B front sandblasting machine 25 is transferred to the fifth AB transfer table 13 and the sixth AB transfer table 14 by the third jig robot 15 .

[0141] A control signal for covering the cover plate is sent to the first AB transfer station 3 and the second AB transfer station 4 through the first product robot 2, and a control signal for taking the cover plate is sent to the first AB transfer station 3 and the second AB transfer station 4 through the first jig robot 5; a control signal for covering the cover plate is sent to the third AB transfer station 8 and the fourth AB transfer station 9 through the second product robot 10, and a control signal for taking the cover plate is sent to the third AB transfer station 8 and the fourth AB transfer station 9 through the second jig robot 7; a control signal for covering the cover plate is sent to the fifth AB transfer station 13 and the sixth AB transfer station 14 through the third product robot 12, and a control signal for taking the cover plate is sent to the fifth AB transfer station 13 and the sixth AB transfer station 14 through the third jig robot 15; a control signal for covering the cover plate is sent to the seventh AB transfer station 18 and the eighth AB transfer station 19 through the fourth product robot 20, and a control signal for taking the cover plate is sent to the seventh AB transfer station 18 and the eighth AB transfer station 19 through the fourth jig robot 17.

[0142] The transfer table issues corresponding control commands based on the different robots' rotational operations, and performs the corresponding cover-laying or cover-removing actions. That is, when the product robot places a product, it places a cover; when the fixture robot wants to remove a product, it removes a cover.

[0143] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0144] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

Claims

1. A double-line cross-type fully automatic sandblasting system, characterized in that: It includes two A and B assembly lines that cross-transfer at the transfer station. The A assembly line is connected in sequence from feeding to discharging: the A feeder, the first product robot, the first AB transfer table and the second AB transfer table, the first fixture robot, the A reverse sandblasting machine, the second fixture robot, the third AB transfer table and the fourth AB transfer table, the second product robot, the A flip conveyor, the third product robot, the fifth AB transfer table and the sixth AB transfer table, the third fixture robot, the A front sandblasting machine, the fourth fixture robot, the seventh AB transfer table and the eighth AB transfer table, the fourth product robot, and the A material receiver. The B production line is connected in sequence from feeding to discharging, namely, the B feeder, the second product robot, the third AB transfer table and the fourth AB transfer table, the second jig robot, the B reverse sandblasting machine, the first jig robot, the first AB transfer table and the second AB transfer table, the first product robot, the B flip conveyor table, the fourth product robot, the seventh AB transfer table and the eighth AB transfer table, the fourth jig robot, the B front sandblasting machine, the third jig robot, the fifth AB transfer table and the sixth AB transfer table, the third product robot, and the B material receiving machine.

2. The double-line cross-type fully automatic sandblasting system according to claim 1, characterized in that: The A feeder or B feeder includes a body with an operating table and a material storage table, wherein a loading station, a material picking station, a code scanning and turning station are arranged on the operating table, and the material storage table is connected to the rear of the code scanning and turning station, and boxes of good products and boxes of defective products are placed on the material storage table, an upper plate lifting mechanism is arranged below the loading station, and the upper part of the loading station is driven by the loading transfer assembly to drive the plate transfer rack; a lower plate lifting mechanism is arranged below the material picking station, and the upper part of the material picking station is driven by the material picking transfer assembly to drive the transfer rack; the code scanning and turning station has a code scanning transfer assembly, and the code scanning transfer assembly drives the code scanning plate to move horizontally, and at least one loading platform is arranged on the code scanning plate, a code scanning gun is arranged correspondingly on the side of the loading platform, and a lifting assembly is erected on the side of the code scanning transfer assembly, and the lifting assembly lifts and drives the suction rack, and a suction plate corresponding to the loading platform is arranged at the bottom of the suction rack.

3. The double-line cross-type fully automatic sandblasting system according to claim 2, characterized in that: The upper plate lifting mechanism or the lower plate lifting mechanism includes a through opening located on the operating table, a plurality of limit blocks and at least one push-clamping cylinder are arranged on the periphery of the through opening, a lifting platform is arranged below the through opening, and the lifting platform is fixedly connected to the lifting belt, and the lifting belt is tensioned and sleeved on the periphery of the main pulley and the slave pulley, and the main pulley is connected by a lifting motor drive.

4. The double-line cross-type fully automatic sandblasting system according to claim 2, characterized in that: The loading and transferring assembly or the picking and transferring assembly includes a parallel translation electric cylinder and a slide rail. The translation block of the translation electric cylinder is fixedly connected to a shift plate seat or a material shift seat. The translation electric cylinder of the loading and transferring assembly is arranged perpendicular to the translation electric cylinder of the picking and transferring assembly. The bottom of the shift plate seat or the material shift seat is embedded in the corresponding slide rail through a slider to form a sliding connection.

5. The double-line cross-type fully automatic sandblasting system according to claim 4, characterized in that: A lifting cylinder is fixed on the plate shifting seat, the bottom of the lifting cylinder drives the lifting plate, the lifting plate is fixed with a clamping cylinder, the clamping cylinder opens and closes to drive the plate shifting rack; limiters are fixed on both sides of the lifting cylinder, and corresponding limit blocks are set on the lifting plate, and the limiters and the limit blocks are facing each other up and down.

6. The double-line cross-type fully automatic sandblasting system according to claim 4, characterized in that: A vertical electric cylinder is fixed on the material moving seat, a vertical block of the vertical electric cylinder is fixedly connected to the material moving rack, a horizontal cylinder is installed at the bottom of the material moving rack, a telescopic rod of the horizontal cylinder is fixedly connected to a positioning plate, and at least one material suction part is provided on the bottom surface of the positioning plate.

7. The double-line cross-type fully automatic sandblasting system according to claim 2, characterized in that: The code scanning and transferring assembly includes a parallel electric cylinder and a guide rail. The translation block of the parallel electric cylinder is fixedly connected to the code scanning plate. The bottom of the code scanning plate is embedded in the guide rail through the guide block to form a sliding connection.

8. The double-line cross-type fully automatic sandblasting system according to claim 1, characterized in that: The first AB transfer table or the second AB transfer table or the third AB transfer table or the fourth AB transfer table includes a table body, a material tray station is arranged on the top surface of the table body, a vertical frame is fixed on the side of the material tray station, a lifting drive is fixed on the vertical frame, a lifting rod of the lifting drive is fixedly connected to a cover grabbing frame, a plurality of cover grabbing stations are arranged on the bottom surface of the cover grabbing frame, and the cover grabbing frame is located directly above the material tray station.

9. The double-line cross-type fully automatic sandblasting system according to claim 1, characterized in that: The A flip conveyor platform or the B flip conveyor platform includes a body with a table, a linear transfer mechanism is provided on the table, a translationally driven substrate is provided on the linear transfer mechanism, the substrate is connected to the jig plate through a rotator, at least one guide rail is provided in parallel on the side of the linear transfer mechanism, a guide block is fixed on the bottom surface of the substrate, and the guide block is embedded in the guide rail to form a sliding connection; a truss is erected above the linear transfer mechanism, a lifter is provided on the truss, the lifter lifts and drives the suction rack, and the suction rack is provided above the jig plate.

10. The double-line cross-type fully automatic sandblasting system according to claim 9, characterized in that: The linear transfer mechanism includes a conveying motor, a driving pulley and a driven pulley hinged on the table, the driving shaft of the conveying motor is fixedly connected to the central axis of the driving pulley, the outer periphery of the driving pulley and the driven pulley are tensioned and sleeved with a transmission belt, and the bottom of the base plate is fixedly connected to the transmission belt through a fixing member.

11. The double-line cross-type fully automatic sandblasting system according to claim 9, characterized in that: Limiting seats are arranged on both sides of the rotator on the base plate, and rotation limiters are passed through the limiting seats. A rotation limiting plate is protruded from the bottom surface of the base plate, and the rotation limiting plate is located between the two rotation limiters.

12. The double-line cross-type fully automatic sandblasting system according to claim 9, characterized in that: At least two sets of the linear transfer mechanisms, the base plate, the rotator and the jig plate are arranged in parallel on the table, and at least two sets of the lifters and the suction racks are correspondingly arranged on the truss, and the suction racks are arranged in one-to-one correspondence with the jig plates.

13. The operating method of the dual-line cross-type fully automatic sandblasting system according to claim 1, wherein: The following steps are involved:

1. A production line operation process: 1) The A feeder outputs the fully loaded tray, and the first product manipulator moves the products in batches to the reverse fixtures on the first AB transfer table and the second AB transfer table for positioning; 2) The first AB transfer station and the second AB transfer station are used to cover the product in the reverse jig with a reverse cover plate, and then the first jig robot removes the reverse jig, product and reverse cover plate and transfers them to the A reverse sandblasting machine for sandblasting of the product reverse side; 3) The second fixture robot removes the back fixture, product and back cover together and transfers them to the third AB transfer table and the fourth AB transfer table, and removes the back cover from the product through the third AB transfer table and the fourth AB transfer table; 4) The second product robot moves the products in batches to the A flip conveyor table and flips the products from the back to the front; 5) The third product robot moves the products in batches to the front fixtures on the fifth AB transfer table and the sixth AB transfer table for positioning; 6) The front cover plate is placed on the product in the front fixture through the fifth AB transfer station and the sixth AB transfer station, and then the third fixture robot takes away the front fixture, product and front cover plate and transfers them to the A front sandblasting machine for front sandblasting of the product; 7) The fourth fixture robot takes away the front fixture, product and front cover together and transfers them to the seventh AB transfer table and the eighth AB transfer table, and removes the front cover on the product through the seventh AB transfer table and the eighth AB transfer table; 8) The fourth product robot moves the products in batches to the A receiving machine for receiving operation; 2. Operation process of B assembly line: 1) The B feeder outputs the fully loaded tray, and the second product robot moves the products in batches to the reverse fixtures on the third AB transfer table and the fourth AB transfer table for positioning; 2) The back cover is placed on the product in the back jig through the third AB transfer station and the fourth AB transfer station, and then the second jig robot takes away the back jig, product and back cover and transfers them to the B back sandblasting machine for sandblasting of the product back; 3) The first fixture robot removes the back fixture, product and back cover together and transfers them to the first AB transfer table and the second AB transfer table, and removes the back cover from the product through the first AB transfer table and the second AB transfer table; 4) The first product manipulator moves the products in batches to the B flipping conveyor table and flips the products from the back to the front; 5) The fourth product robot moves the products in batches to the front fixtures on the seventh AB transfer table and the eighth AB transfer table for positioning; 6) The front cover plate is placed on the product in the front fixture through the seventh AB transfer station and the eighth AB transfer station, and then the fourth fixture robot takes away the front fixture, product and front cover plate and transfers them to the B front sandblasting machine for product front sandblasting operation; 7) The front jig, product and front cover are taken away together by the third jig robot and transferred to the fifth AB transfer table and the sixth AB transfer table, and the front cover on the product is removed by the fifth AB transfer table and the sixth AB transfer table; 8) The third product robot moves the products batch by batch to the B receiving machine for receiving operation.

14. The operating method of the dual-line cross-type fully automatic sandblasting system according to claim 13, wherein: The following steps are involved:

1. Reflow path of the reverse fixture: 1) Use the first fixture manipulator to move the reverse fixtures on the first AB transfer table and the second AB transfer table to the A reverse sandblasting machine; 2) Use the second fixture robot to move the reverse side fixture output by the A reverse side sandblasting machine to the third AB transfer table and the fourth AB transfer table; 3) The second fixture robot then moves the reverse fixtures on the third AB transfer table and the fourth AB transfer table to the B reverse side sandblasting machine; 4) Use the first fixture robot to move the back side fixture output by the B back side sandblasting machine to the first AB transfer table and the second AB transfer table; 2. Return path of the front fixture: 1) Use the third fixture manipulator to move the front fixtures on the fifth AB transfer table and the sixth AB transfer table to the A front sandblasting machine; 2) Use the fourth fixture robot to move the front fixture output by the A front sandblasting machine to the seventh AB transfer table and the eighth AB transfer table; 3) Then, the fourth fixture robot moves the front fixtures on the seventh AB transfer table and the eighth AB transfer table to the B front sandblasting machine; 4) The front jig output by the B front sandblasting machine is transferred to the fifth AB transfer table and the sixth AB transfer table through the third jig robot.

15. The operating method of the dual-line cross-type fully automatic sandblasting system according to claim 13, wherein: A control signal for covering the cover is sent to the first AB transfer station and the second AB transfer station through the first product robot, and a control signal for taking the cover is sent to the first AB transfer station and the second AB transfer station through the first fixture robot; a control signal for covering the cover is sent to the third AB transfer station and the fourth AB transfer station through the second product robot, and a control signal for taking the cover is sent to the third AB transfer station and the fourth AB transfer station through the second fixture robot; a control signal for covering the cover is sent to the fifth AB transfer station and the sixth AB transfer station through the third product robot, and a control signal for taking the cover is sent to the fifth AB transfer station and the sixth AB transfer station through the third fixture robot; a control signal for covering the cover is sent to the seventh AB transfer station and the eighth AB transfer station through the fourth product robot, and a control signal for taking the cover is sent to the seventh AB transfer station and the eighth AB transfer station through the fourth fixture robot.

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