Magnetic suspension assembly production line for box covers

Abstract

The invention provides a magnetic suspension assembly production line for box covers, belongs to the technical field of box cover assembly, and solves the problems of low production efficiency and labor waste due to manual assembly in the prior art. The device comprises a magnetic suspension working table, a plurality of rotor platforms are arranged on the magnetic suspension working table, placing tables are installed on the rotor platforms, and turnover devices are arranged on the two sides of the magnetic suspension working table respectively. A frame strip placing device and an upper cover body mounting device are arranged on one sides of the two turnover devices, and an inner cover mounting device, a connecting piece mounting device and a discharging device are arranged on the other sides of the two turnover devices. A frame strip is placed on the placing table through the frame strip placing device and conveyed to the position of the upper cover body installing device through the rotor platform for installing an upper cover body, then a workpiece is overturned through the two overturning devices, an inner cover is placed through the inner cover installing device, a connecting piece is installed through the connecting piece installing device, and finally a box cover is taken down from the placing table through the discharging device. And automatic assembly can be realized, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of box cover assembly, and in particular belongs to a magnetic suspension assembly production line for box covers. Background Art

[0002] The box cover is the closed part of the packaging box container. Its main function is to close the packaging box to prevent the contents from leaking out or being contaminated and damaged by the external environment.

[0003] The structure of the box cover is as follows Figure 1 As shown, it includes a frame bar 100, the top of the frame bar 100 is buckled with the upper cover body 200, the inner cover 300 is placed in the frame bar 100, and finally the connecting piece 400 cooperates with the frame bar 100 to clamp the inner cover 300, and the connecting piece 400 is snap-connected with the upper cover body 200 to assemble a box cover. The existing box cover assembly still relies on manual assembly, which is inefficient and laborious. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to provide a magnetic levitation assembly production line for box covers, in which a frame strip placing device takes the frame strip and places it on a placing table, which is then transported by a movable platform to the position of an upper cover body installation device for installation of the upper cover body, and then the assembled upper cover body and frame strip are flipped 180° by two flipping devices, and then the inner cover installation device places the inner cover, and the connecting piece installation device installs the connecting piece, and finally the unloading device removes the assembled box cover from the placing table. Mechanical devices are used to replace manual assembly operations, thereby realizing automated assembly and improving production efficiency.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A magnetic suspension assembly production line for box covers comprises a magnetic suspension workbench, wherein a plurality of movable sub-platforms are arranged on the magnetic suspension workbench, a placing table for placing box cover parts is installed on the movable sub-platform, and flipping devices are respectively arranged on both sides of the magnetic suspension workbench, wherein one flipping device takes a workpiece from the placing table and transfers it to another flipping device to place the workpiece on the placing table; a frame strip placing device for placing a frame strip on the placing table and an upper cover body mounting device for mounting an upper cover body on the placed frame strip are arranged on one side of the two flipping devices, and an inner cover mounting device for placing an inner cover on the frame strip, a connector mounting device for mounting a connector on the inner cover and a material unloading device for removing an assembled box cover from the placing table are arranged on the other side of the two flipping devices.

[0007] Preferably, the frame strip placement device includes a first manipulator connected to a first laterally arranged variable-pitch slide, the first variable-pitch slide is connected to a plurality of laterally arranged first bidirectional cylinders, and the telescopic end of the first cylinder is connected to a first clamping plate.

[0008] Preferably, the upper cover body installation device includes a second manipulator, the second manipulator is connected to a laterally arranged second variable-pitch slide, a plurality of first mounting frames are installed on the second variable-pitch slide, a cylinder and a plurality of first suction cups are vertically arranged on the first mounting frame, and a pressure plate is connected to the telescopic end of the cylinder.

[0009] Preferably, the flipping device comprises a six-axis manipulator, the six-axis manipulator is connected to a second mounting frame, and a plurality of second suction cups are provided on the second mounting frame.

[0010] Preferably, the inner cover installation device includes a third manipulator, the third manipulator is connected to a third installation frame, and a plurality of third suction cups are arranged on the third installation frame.

[0011] Preferably, the connecting member installation device includes a fourth manipulator, the fourth manipulator is connected to a third variable pitch slide arranged laterally, a plurality of fourth mounting frames are installed on the third variable pitch slide, and a plurality of fourth suction cups are vertically arranged on the fourth mounting frames.

[0012] Preferably, the unloading device includes a fifth manipulator, the fifth manipulator is connected to a transversely arranged mounting plate, a plurality of transversely arranged second bidirectional cylinders are mounted on the mounting plate, and the telescopic ends of the second bidirectional cylinders are connected to second clamping plates.

[0013] Preferably, the placement table and the mover platform are spaced apart, and an auxiliary pressing mechanism is arranged below the frame placement device and the upper cover body mounting device, the auxiliary pressing mechanism includes a fixed connecting plate, a screw rod is vertically rotated on the connecting plate, the screw rod is connected to a motor, a slide rail is vertically arranged on the connecting plate, a lifting frame is slidably connected to the slide rail and is threadedly connected to the screw rod, and the lifting frame is connected to a top plate for extending into the gap between the placement table and the mover platform.

[0014] Preferably, a support plate is fixedly provided below the turning device for picking up the workpiece, and a limit plate is connected to the support plate and extends into the gap between the placement table and the mover platform.

[0015] Preferably, the mover platform is sequentially provided with a first detection device and a first waste row station on the path from the frame strip placing device to the upper cover body mounting device, a second detection device is provided between the cover body mounting device and the flipping device for picking up the workpiece, a second waste row station is provided between the frame strip placing device and the flipping device for placing the workpiece, a third detection device is provided between the inner cover mounting device and the flipping device for placing the workpiece, a fourth detection device is provided between the inner cover mounting device and the connecting part mounting device, a fifth detection device is provided between the mounting device and the unloading device, and a third waste row station is provided between the unloading device and the flipping device for picking up the workpiece.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] The frame strip placement device takes the frame strip and places it on the placement table, which is then transported by the mover platform to the position of the upper cover body installation device for installation of the upper cover body. The assembled upper cover body and frame strip are then flipped 180° by two flipping devices. Thereafter, the inner cover installation device places the inner cover, and the connecting piece installation device installs the connecting piece. Finally, the unloading device removes the assembled box cover from the placement table. Mechanical devices are used to replace manual assembly operations, thereby realizing automated assembly and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of the box cover structure provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of a top view structure provided for an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of a three-dimensional structure provided by an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the structure of a frame strip placement device provided in an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the structure of the upper cover installation device provided in an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the structure of a flipping device provided in an embodiment of the present invention;

[0025] Figure 7 A schematic diagram of the structure of the inner cover installation device provided in an embodiment of the present invention;

[0026] Figure 8 A schematic diagram of the structure of a connector installation device provided in an embodiment of the present invention;

[0027] Fig. 9 A schematic diagram of the structure of a feeding device provided in an embodiment of the present invention;

[0028] Fig.10 A schematic diagram of the structure of the auxiliary pressing mechanism provided in an embodiment of the present invention;

[0029] Fig.11 for Figure 3A in the figure is an enlarged structural diagram.

[0030] Figure numerals: 100-frame; 200-upper cover; 300-inner cover; 400-connecting piece; 1-frame placing device; 101-first manipulator; 102-first variable pitch slide; 103-first bidirectional cylinder; 104-first clamp; 2-magnetic suspension workbench; 3-upper cover installation device; 301-second manipulator; 302-second variable pitch slide; 303-first mounting frame; 304-cylinder; 305-first suction cup; 306-pressing plate; 4-turning device; 401-six-axis manipulator; 402-second mounting frame; 403-second suction cup; 5-inner cover installation device; 501-third manipulator; 502-third mounting frame; 503-third suction cup; 6-connecting piece installation device; 601-third Four manipulators; 602-third variable-pitch slide; 603-fourth mounting frame; 604-fourth suction cup; 7-unloading device; 701-fifth manipulator; 702-mounting plate; 703-second bidirectional cylinder; 704-second clamping plate; 8-first detection device; 9-first row of waste stations; 10-second detection device; 11-second row of waste stations; 12-third detection device; 13-fourth detection device; 14-fifth detection device; 15-third row of waste stations; 16-auxiliary pressing mechanism; 1601-motor; 1602-lifting frame; 1603-top plate; 1604-slide rail; 1605-connecting plate; 1606-screw; 17-support plate; 18-limiting plate; 19-moving sub-platform; 20-placing table. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Combine the following Figure 1-Figure 11 The present invention is described in detail.

[0035] Example

[0036] A magnetic suspension assembly production line for box covers comprises a magnetic suspension workbench 2, on which a plurality of movable platforms 19 are arranged, on which a placement table 20 for placing box cover parts is installed, and on both sides of the magnetic suspension workbench 2 are respectively arranged flipping devices 4, wherein one flipping device 4 takes a workpiece from the placement table 20 and transfers it to another flipping device 4 to place the workpiece on the placement table 20; one side of the two flipping devices 4 is provided with a frame strip placing device 1 for placing a frame strip 100 on the placement table 20 and an upper cover body mounting device 3 for mounting an upper cover body 200 on the placed frame strip 100, and the other side of the two flipping devices 4 is provided with an inner cover mounting device 5 for placing an inner cover 300 on the frame strip 100, a connecting piece mounting device 6 for mounting a connecting piece 400 on the inner cover 300, and a feeding device 7 for removing the assembled box cover from the placement table 20.

[0037] The outer side of the magnetic suspension workbench 2 is also provided with a frame strip loading station, an upper cover body loading station, an inner cover loading station and a connector loading station (not shown in the figure), which is convenient for the frame strip placement device 1, the upper cover body installation device 3, the inner cover installation device 5 and the connector installation device 6 to take the corresponding workpieces for assembly operations. The mover platform 19 can be moved to a designated position on the magnetic suspension workbench 2 at will, and its magnetic suspension transportation is an existing technology, such as the XPlanar planar magnetic suspension transportation system. The mover platform 19 is passively powered, wear-resistant, and uses a unique suspension effect to avoid the diffusion of pollutants or impurities in the equipment during the transportation process, while eliminating the mechanical wear and pollution particles caused by friction.

[0038] The frame strip placement device 1 takes the frame strip 100 and places it on the placement table 20, and the movable platform 19 transports it to the position of the upper cover body installation device 3 to install the upper cover body 200, and then the assembled upper cover body 200 and the frame strip 100 are flipped 180° by two flipping devices 4, and then the inner cover installation device 5 places the inner cover, and the connector installation device 6 installs the connector, and finally the unloading device 7 removes the assembled box cover from the placement table 20 to complete the automatic assembly operation. The reason why the assembled upper cover body 200 and the frame strip 100 are flipped 180° is that before flipping, the upper cover body 200 is located above the frame strip 100, and when the inner cover 300 and the connector 400 are installed later, they need to be installed below the frame strip 100. In order to facilitate assembly, the upper cover body 200 and the frame strip 100 are flipped so that the frame strip 100 is located above the upper cover body 200, thereby facilitating the placement and assembly of the inner cover 300 and the connector 400.

[0039] The frame strip placement device 1 includes a first manipulator 101, the first manipulator 101 is connected to a first variable pitch slide 102 arranged horizontally, the first variable pitch slide 102 is connected to a plurality of first bidirectional cylinders 103 arranged horizontally, and the telescopic end of the first cylinder 103 is connected to a first clamping plate 104. A first bidirectional cylinder 103 is correspondingly installed on each sliding seat on the first variable pitch slide 102, so that the positions of the two first clamping plates 104 can be adjusted to adapt to the clamping operation of the frame strips 100 with different spacings; the first bidirectional cylinder 103 can control and adjust the spacing between the two first clamping plates 104, so as to clamp and place the frame strips 100.

[0040] The upper cover body installation device 3 includes a second manipulator 301, which is connected to a laterally arranged second variable-pitch slide 302, on which a plurality of first mounting frames 303 are installed, and a cylinder 304 and a plurality of first suction cups 305 are vertically arranged on the first mounting frame 303, and a pressure plate 306 is connected to the telescopic end of the cylinder 304. The second variable-pitch slide 302 can adjust the distance between the first mounting bracket 303, so that the position of the first suction cup 305 can be adjusted to adapt to the suction operation of the upper cover body 200 with different spacings; the first suction cup 305 is attached to the surface of the upper cover body 200 and then vacuum adsorbed, so as to pick up the upper cover body 200, and the first suction cup 305 releases the vacuum adsorption and then puts down the upper cover body 200; the cylinder 304 can be extended to make the pressure plate 306 abut against the upper cover body 200, and when the upper cover body 200 is placed on the frame bar 100, the cylinder 304 continues to extend to buckle the upper cover body 200 on the frame bar 100, thereby completing the assembly of the upper cover body 200 and the frame bar 100.

[0041] The flipping device 4 includes a six-axis manipulator 401, which is connected to a second mounting frame 402, and a plurality of second suction cups 403 are arranged on the second mounting frame 402. One of the flipping devices 4 takes the assembled upper cover 200 and frame strip 100 off the placement table 20 through the six-axis manipulator 401, and then receives the upper cover 200 and frame strip 100 through another flipping device 4, and then places them on the placement table 20, so as to realize the flipping operation of the upper cover 200 and frame strip 100; wherein the second suction cups 403 take the upper cover 200 and frame strip 100 through vacuum adsorption.

[0042] The inner cover installation device 5 includes a third manipulator 501, which is connected to a third mounting frame 502, and a plurality of third suction cups 503 are arranged on the third mounting frame 502. The third manipulator 501 drives the third mounting frame 502 and the third suction cups 503 to move and take the inner cover 300 from the loading station and place it in the frame strip 100, thereby completing the placement operation of the inner cover 300.

[0043] The connecting piece installation device 6 includes a fourth manipulator 601, the fourth manipulator 601 is connected to a third variable pitch slide 602 arranged horizontally, a plurality of fourth mounting frames 603 are mounted on the third variable pitch slide 602, and a plurality of fourth suction cups 604 are vertically arranged on the fourth mounting frames 603. The third variable pitch slide 602 can adjust the distance between the fourth mounting frames 603, so that the position of the fourth suction cups 604 can be adjusted to adapt to the suction operation of the connecting pieces 400 with different spacings; the fourth suction cups 604 are attached to the surface of the connecting piece 400 and vacuum adsorbed to pick up the connecting piece 400, and the fourth suction cups 604 are released from vacuum adsorption and then put down the connecting piece 400.

[0044] In the loading station, the workpieces are arranged closely or randomly. By setting a variable pitch slide and adjusting the position of the fixture station or the suction cup station, the workpieces can be accurately clamped or adsorbed, reducing potential installation problems caused by inconsistent spacing. The variable pitch slide is an existing technology, such as the XD9515C variable pitch slide module.

[0045] The unloading device 7 includes a fifth manipulator 701, which is connected to a transversely arranged mounting plate 702, on which a plurality of transversely arranged second bidirectional cylinders 703 are mounted, and the telescopic ends of the second bidirectional cylinders 703 are connected to second clamping plates 704. The fifth manipulator 701 drives the second bidirectional cylinders 703 to adjust their positions to clamp the assembled box covers, thereby realizing automatic unloading.

[0046] The first robot 101 , the second robot 301 , the third robot 501 , the fourth robot 601 , and the fifth robot 701 may be SCARA robots or six-axis robots 401 in the flip device 4 .

[0047] The placement table 20 is spaced apart from the moving sub-platform 19, and an auxiliary pressing mechanism 16 is arranged below the frame strip placement device 1 and the upper cover body mounting device 3, and the auxiliary pressing mechanism 16 comprises a fixed connecting plate 1605, on which a screw rod 1606 is arranged for vertical rotation, and the screw rod 1606 is connected to a motor 1601, and a slide rail 1604 is arranged vertically on the connecting plate 1605, and a lifting frame 1602 threadedly connected to the screw rod 1606 is slidably connected to the slide rail 1604, and a top plate 1603 for extending into the gap between the placement table 20 and the moving sub-platform 19 is connected to the lifting frame 1602. The motor 1601 can be connected to the screw rod 1606 through a belt.

[0048] When the frame strip 100 is placed on the placement table 20, it is necessary to press the frame strip 100 so that the inner wall of the frame strip 100 is inserted into the outer wall of the placement table 20 to achieve stable placement of the frame strip 100, and the frame strip 100 and the upper cover body 200 need to be snap-fitted and installed, so a pressing operation is also required; after the movable platform 19 moves to a position where the top plate 1603 is inserted into the gap between the placement table 20 and the movable platform 19, the motor 1601 drives the top plate 1603 to rise so that the top plate 1603 contacts the lower surface of the placement table 20, thereby assisting in pressing the frame strip 100 and the upper cover body 200, and preventing the movable platform 19 from squeezing the magnetic levitation workbench 2 after being pressed, causing damage to the movable platform 19 and the magnetic levitation workbench 2. The subsequent connecting piece 400 also needs to be pressed to make the connecting piece 400 snap-connected with the upper cover body 200. An auxiliary pressing mechanism 16 can also be configured. However, the present application does not set the auxiliary pressing mechanism 16 in the connecting piece installation device 6. Because the snap-connection between the connecting piece 400 and the upper cover body 200 requires a large force, in order to avoid damage to the auxiliary pressing mechanism 16, the present application only places the connecting piece 400, and the final pressing operation is performed manually after the unloading device 7 clamps the unloading.

[0049] A support plate 17 is fixedly arranged below the turning device 4 for picking up the workpiece, and a limit plate 18 is connected to the support plate 17 and extends into the gap between the placement table 20 and the movable platform 19. When the frame bar 100 is too tightly connected to the placement table 20, the turning device 4 may pick up the movable platform 19 together, causing the movable platform 19 to fall and be damaged. The limit plate 18 can prevent the movable platform 19 from being picked up.

[0050] A first detection device 8 and a first waste row station 9 are sequentially arranged on the path of the movable platform 19 from the frame strip placing device 1 to the upper cover body mounting device 3, a second detection device 10 is arranged between the cover body mounting device 3 and the flipping device 4 for picking up the workpiece, a second waste row station 11 is arranged between the frame strip placing device 1 and the flipping device 4 for placing the workpiece, a third detection device 12 is arranged between the inner cover mounting device 5 and the flipping device 4 for placing the workpiece, a fourth detection device 13 is arranged between the inner cover mounting device 5 and the connecting part mounting device 6, a fifth detection device 14 is arranged between the mounting device 6 and the unloading device 7, and a third waste row station 15 is arranged between the unloading device 7 and the flipping device 4 for picking up the workpiece.

[0051] The first detection device 8 can detect whether the frame strip 100 is placed in place (for example, whether the upper end surface of the frame strip 100 is horizontal. If it is not horizontal, it is not placed in place). The frame strip 100 that is not placed is taken by the movable platform 19 to the first row of waste stations 9 to wait for manual processing; the second detection device 10 can detect whether the upper cover body 200 is placed in place. The upper cover body 200 that is not placed is taken by the movable platform 19 to the second row of waste stations 11 to wait for manual processing; the third detection device 12 detects the turned frame strip 100 and the upper cover body 200, the fourth detection device 13 detects whether the inner cover 300 is placed, and the fifth detection device 14 detects the assembled box cover. If it does not meet the requirements, it will be discharged from the second row of waste stations 11 or the third row of waste stations 15 for waste processing.

[0052] In this application, four mover platforms 19 are used as a group for assembly operation. When there are less than four mover platforms 19 after waste treatment, the subsequent mover platforms 19 are waited for to be supplemented to meet the installation operation. The detection device can use a visual sensor.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A magnetic suspension assembly production line for box covers, characterized in that: The invention comprises a magnetic suspension workbench (2), wherein a plurality of movable platforms (19) are arranged on the magnetic suspension workbench (2), a placement table (20) for placing box cover parts is installed on the movable platform (19), and flipping devices (4) are respectively arranged on both sides of the magnetic suspension workbench (2), wherein one flipping device (4) takes a workpiece from the placement table (20) and transfers it to another flipping device (4) to place the workpiece on the placement table (20); and one side of the two flipping devices (4) is provided with a device for moving the workpiece to the placement table (20). 0) and an upper cover body mounting device (3) for mounting an upper cover body (200) on the placed frame strip (100); the other side of the two flipping devices (4) is provided with an inner cover mounting device (5) for placing an inner cover (300) on the frame strip (100), a connecting piece mounting device (6) for mounting a connecting piece (400) on the inner cover (300), and a discharging device (7) for removing the assembled box cover from the placement table (20).

2. The magnetic suspension assembly production line of a box cover according to claim 1, characterized in that: The frame strip placement device (1) comprises a first manipulator (101), the first manipulator (101) is connected to a first variable-pitch slide (102) arranged transversely, the first variable-pitch slide (102) is connected to a plurality of first bidirectional cylinders (103) arranged transversely, and the telescopic end of the first cylinder (103) is connected to a first clamping plate (104).

3. The magnetic suspension assembly production line of a box cover according to claim 1, characterized in that: The upper cover body installation device (3) comprises a second manipulator (301), the second manipulator (301) is connected to a second variable-pitch slide (302) arranged horizontally, a plurality of first installation frames (303) are installed on the second variable-pitch slide (302), a cylinder (304) and a plurality of first suction cups (305) are vertically arranged on the first installation frame (303), and a pressure plate (306) is connected to the telescopic end of the cylinder (304).

4. The magnetic suspension assembly line of a box cover according to claim 1, characterized in that: The flipping device (4) comprises a six-axis manipulator (401), the six-axis manipulator (401) is connected to a second mounting frame (402), and a plurality of second suction cups (403) are arranged on the second mounting frame (402).

5. The magnetic suspension assembly production line for box covers according to claim 1, characterized in that: The inner cover installation device (5) comprises a third manipulator (501), the third manipulator (501) is connected to a third installation frame (502), and a plurality of third suction cups (503) are arranged on the third installation frame (502).

6. The magnetic suspension assembly line of a box cover according to claim 1, characterized in that: The connecting member installation device (6) comprises a fourth manipulator (601), the fourth manipulator (601) is connected to a third variable pitch slide (602) arranged transversely, a plurality of fourth installation frames (603) are installed on the third variable pitch slide (602), and a plurality of fourth suction cups (604) are vertically arranged on the fourth installation frames (603).

7. The magnetic suspension assembly line of a box cover according to claim 1, characterized in that: The unloading device (7) comprises a fifth manipulator (701), the fifth manipulator (701) is connected to a transversely arranged mounting plate (702), a plurality of transversely arranged second bidirectional cylinders (703) are mounted on the mounting plate (702), and the telescopic ends of the second bidirectional cylinders (703) are connected to second clamping plates (704).

8. The magnetic suspension assembly line of a box cover according to claim 1, characterized in that: The placement platform (20) is spaced apart from the moving sub-platform (19); an auxiliary pressing mechanism (16) is arranged below the frame strip placement device (1) and the upper cover body mounting device (3); the auxiliary pressing mechanism (16) comprises a fixed connecting plate (1605); a screw rod (1606) is arranged vertically on the connecting plate (1605); the screw rod (1606) is connected to a motor (1601); a slide rail (1604) is arranged vertically on the connecting plate (1605); a lifting frame (1602) threadedly connected to the screw rod (1606) is slidably connected to the slide rail (1604); and a top plate (1603) is connected to the lifting frame (1602) for extending into the gap between the placement platform (20) and the moving sub-platform (19) and for extending into the gap between the placement platform (20) and the moving sub-platform (19) 9. The magnetic suspension assembly line of a box cover according to claim 1, characterized in that: A support plate (17) is fixedly arranged below the turning device (4) for picking up the workpiece, and a limit plate (18) is connected to the support plate (17) and extends into the gap between the placement table (20) and the mover platform (19).

10. The magnetic suspension assembly production line of a box cover according to claim 1, characterized in that: The moving platform (19) is provided with a first detection device (8) and a first waste row station (9) in sequence on the path from the frame strip placement device (1) to the upper cover body installation device (3); a second detection device (10) is provided between the cover body installation device (3) and the turning device (4) for picking up the workpiece; a second waste row station (11) is provided between the frame strip placement device (1) and the turning device (4) for placing the workpiece; a third detection device (12) is provided between the inner cover installation device (5) and the turning device (4) for placing the workpiece; a fourth detection device (13) is provided between the inner cover installation device (5) and the connecting piece installation device (6); a fifth detection device (14) is provided between the installation device (6) and the unloading device (7); and a third waste row station (15) is provided between the unloading device (7) and the turning device (4) for picking up the workpiece.

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