Magnetic attaching mechanism

Abstract

The invention relates to the technical field of LCD and polarizer pasting, in particular to a magnetic attaching mechanism. Comprising an LCD height adjusting mechanism, a longitudinal translation mechanism is arranged at the bottom of one side of the LCD height adjusting mechanism, an electromagnet is arranged on the inner side of the bottom end of the longitudinal translation mechanism, an LCD suction plate is arranged at the bottom of the longitudinal translation mechanism, a steel belt is arranged at the bottom of the LCD suction plate, and a corner lifting mechanism is arranged at the bottom of the steel belt. The longitudinal translation mechanism comprises a connecting plate, a displacement driving motor, a lead screw, a threaded sliding block and a bottom plate, the top of the connecting plate is fixed to the height adjusting motor through bolts, the lead screw is rotationally connected to the inner side of the bottom end of the connecting plate, and the displacement driving motor is fixed to one end of the top of the connecting plate. According to the magnetic force attaching mechanism, attaching is conducted in a steel belt and magnetic force attaching mode, so that the deformation after attaching is greatly reduced, meanwhile, pressure is provided for surface contact through electromagnetic adsorption, and LCD deformation caused by polarizing plate wiredrawing is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of LCD and polarizing plate attachment, and in particular to a magnetic attachment mechanism. Background Art

[0002] Polarizer is an optical film composed of multiple layers of polymer materials that has the function of generating polarized light. Polarizer converts natural light without polarization into polarized light, and allows light that is perpendicular to the electric field to pass through, so that the LCD panel can display images normally. It is an indispensable part of LCD imaging. In the later production process of LCD, the polarizer needs to be attached to the LCD panel that has been attached with a flexible circuit board. The LCD and polarizer are attached by Sheet, rubber roller to platform, mesh box to platform and other attachment methods. All the above attachment methods require rubber roller to be pressed.

[0003] The best way to attach LCD and polarizing plate is to use Sheet. This method uses PET+adhesive plate to absorb polarizing plate, and then uses roller to attach polarizing plate. The only disadvantage of this attachment method is that PET is a flexible material, and there is a certain elastic deformation when attaching the material, which causes the attached film material to be deformed by tension, and then causes deformation of the attached LCD product.

[0004] To this end, a magnetic attachment mechanism is designed to provide another technical solution to the above technical problem. Summary of the invention

[0005] Based on this, it is necessary to provide a magnetic attachment mechanism to solve the technical problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A magnetic attachment mechanism comprises an LCD height adjustment mechanism, wherein a longitudinal translation mechanism is arranged at the bottom of one side of the LCD height adjustment mechanism, an electromagnet is arranged on the inner side of the bottom end of the longitudinal translation mechanism, an LCD suction plate is arranged at the bottom of the longitudinal translation mechanism, a steel belt is arranged at the bottom of the LCD suction plate, an angle lifting mechanism is arranged at the bottom of the steel belt, the longitudinal translation mechanism comprises a connecting plate, a displacement driving motor, a screw rod, a threaded slider and a bottom plate, the top of the connecting plate is bolted to the height adjustment motor, the inner side of the bottom end of the connecting plate is rotatably connected to the screw rod, one end of the top of the connecting plate is fixed with a displacement driving motor, the output end of the displacement driving motor is connected to the outer side of one end of the screw rod through a synchronous belt, the outer side of the screw rod is threadedly connected to the threaded slider, the bottom of the threaded slider is fixed to the electromagnet, the bottom end of the connecting plate and the bottom of the electromagnet are fixed with a bottom plate, and the bottom of the bottom plate is bolted to the LCD suction plate.

[0008] As a preferred embodiment of the magnetic attachment mechanism provided by the present invention, the LCD height adjustment mechanism includes a support frame, a first guide rail, a first slider, a first connecting frame, a height adjustment motor and a second connecting frame, the first guide rails are fixed at both ends of one side of the support frame, the first slider is slidably connected to the outer side of one side of the first guide rail, the first connecting frame is fixed to one side of the two first sliders, a height adjustment motor is fixed to one side of the top of the support frame, the push rod of the height adjustment motor is fixed to the first connecting frame, and a height adjustment motor is provided at the bottom of the first connecting frame away from the support frame.

[0009] As a preferred implementation of the magnetic attachment mechanism provided by the present invention, a first detection plate is bolted to one end of the first connecting frame close to the supporting frame, and a first travel switch is evenly fixed to one side of the supporting frame.

[0010] As a preferred embodiment of the magnetic attachment mechanism provided by the present invention, a second guide rail is fixed on the inner side of the bottom end of the connecting plate and on both sides of the threaded slider, a second slider is slidably connected to the outer side of the bottom end of the second guide rail, and the bottom of the second slider is fixed to the electromagnet.

[0011] As a preferred embodiment of the magnetic attachment mechanism provided by the present invention, the angle lifting mechanism includes a fixed frame, a fourth guide rail, a fourth slider, a support plate, a first positioning frame, a second positioning frame, a first limit block, a second limit block, an angle lifting adjustment motor, a lifting block and an adjusting threaded column, one end of the top of the support plate is bolted to the first positioning frame, the fourth guide rail is fixed on both sides of the other end of the top of the support plate, the outer side of the top of the fourth guide rail is slidably connected to the fourth slider, the top of the two fourth sliders is fixed with a fixed frame, and the fixed frame is set away from the top of one end of the first positioning frame There is a second positioning frame, and the outer sides of the first positioning frame and the second positioning frame at the tops away from each other are connected with steel belt bolts, the first limit blocks are fixed on both sides of the fixing frame close to one end of the first positioning frame, the second limit blocks are fixed on both sides of one end of the support plate and at the end of the first limit block away from the first positioning frame, the top end of the fixing frame is slidably connected with a lifting block, the lifting block is bolted to the second positioning frame, the bottom of the fixing frame is fixed with an angle adjustment motor, the output end of the angle adjustment motor is connected with an adjusting threaded column, and the outer side of the adjusting threaded column is threadedly connected to the lifting block.

[0012] As a preferred embodiment of the magnetic attachment mechanism provided by the present invention, third guide rails are fixed on both sides of the fixed frame close to one end of the second positioning frame, and third sliders are fixed on both sides of the second positioning frame close to one end of the fixed frame, and the third slider is slidably connected to the third guide rails.

[0013] As a preferred embodiment of the magnetic attachment mechanism provided by the present invention, a second detection plate is fixed by bolts on one side of the lifting block, and a second travel switch is fixed on the inner side of the fixing frame and at the top and bottom of one side of the lifting block.

[0014] As a preferred embodiment of the magnetic attachment mechanism provided by the present invention, tensioning mechanisms are installed on both sides of the bottom of one end of the fixed frame away from the support plate, and the tensioning mechanism includes a push rod motor and a synchronization block. Push rod motors are fixed on both sides of the bottom of one end of the fixed frame away from the support plate, and the push rod of the push rod motor passes through the fixed frame and is connected to the synchronization block, and the bottom of the synchronization block is fixed to the support plate.

[0015] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0016] At the same time, through the above technical solutions, the present invention has at least the following beneficial effects:

[0017] The magnetic attachment mechanism provided by the present invention is attached by a steel belt + magnetic force attachment method, thereby greatly reducing the deformation after attachment, and providing pressure for surface contact by electromagnetic adsorption, and adopting a metal steel belt, whose elastic deformation is smaller than that of PET, greatly reducing the deformation of LCD caused by polarizing plate drawing, and reducing the generation of some foreign matter and wear of the rubber roller caused by the friction of the rubber roller during attachment;

[0018] Through the cooperation of the angle lifting mechanism and the tensioning mechanism, the position of the steel belt can be adjusted at a single angle through the height of the angle lifting mechanism. At the same time, through the operation of the tensioning mechanism, the tensioning degree of the steel belt between the first positioning frame and the second positioning frame can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a side view of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the connecting plate of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the screw rod of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the steel strip of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the support plate of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the lifting block of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the second detection board of the present invention.

[0028] In the figure: 1. LCD height adjustment mechanism; 2. longitudinal translation mechanism; 3. electromagnet; 4. LCD suction plate; 5. steel belt; 6. angle lifting mechanism; 7. tensioning mechanism; 8. first guide rail; 9. first slider; 10. first travel switch; 11. first detection plate; 12. first connecting frame; 13. height adjustment motor; 14. connecting plate; 15. displacement drive motor; 16. lead screw; 17. threaded slider; 18. second guide rail; 19. second slider; 20. bottom plate; 21. second connecting frame; 22. support plate; 23. first positioning frame; 24. second positioning frame; 25. push rod motor; 26. synchronization block; 27. first limit block; 28. second limit block; 29. ​​angle lifting motor; 30. third guide rail; 31. third slider; 32. lifting block; 33. second detection plate; 34. second travel switch; 35. adjusting threaded column. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] Reference Figure 1-Figure 8A magnetic attachment mechanism includes an LCD height adjustment mechanism 1, a longitudinal translation mechanism 2 is arranged at the bottom of one side of the LCD height adjustment mechanism 1, an electromagnet 3 is arranged on the inner side of the bottom end of the longitudinal translation mechanism 2, an LCD suction plate 4 is arranged at the bottom of the longitudinal translation mechanism 2, so that a steel belt 5 is adsorbed by the LCD suction plate 4; a steel belt 5 is arranged at the bottom of the LCD suction plate 4, and an angle lifting mechanism 6 is arranged at the bottom of the steel belt 5, so that the steel belt 5 is adjusted at a single angle by the angle lifting mechanism 6;

[0034] In this embodiment, the steel belt 5 is a SUS440C steel belt. The SUS440C steel belt is made of 440C or martensitic stainless steel, can be adsorbed by magnetism, has a thickness of 0.27mm-0.10mm, has a certain amount of deformation and is rust-proof. A layer of transfer paper with double-sided adhesive is attached to the steel belt for sticking the polarizing plate.

[0035] In other embodiments, the LCD suction plate 4 is a vacuum suction plate, and the gas extraction end of the LCD suction plate 4 is connected to an external vacuum pump or other structure, so that when the bottom of the LCD suction plate 4 contacts an object, the object can be moved by vacuum adsorption.

[0036] The LCD height adjustment mechanism 1 includes a support frame, a first guide rail 8, a first slider 9, a first travel switch 10, a first detection plate 11, a first connecting frame 12, a height adjustment motor 13 and a second connecting frame 21. The first guide rails 8 are fixed to both ends of one side of the support frame, so that the support frame bottom and the external structure can be fixed by bolts, so that the LCD height adjustment mechanism 1 can achieve height support. The first slider 9 is slidably connected to the outer side of one side of the first guide rail 8, so that the first slider 9 can slide up and down on the outer side of the first guide rail 8, and the first guide rail 8 and the first slider 9 cannot be separated by translation;

[0037] A first connecting frame 12 is fixed to one side of the two first sliders 9, and a height adjustment motor 13 is fixed to one side of the top of the support frame. The push rod of the height adjustment motor 13 is fixed to the first connecting frame 12, so that the operation of the height adjustment motor 13 drives the first connecting frame 12 to slide and lift through the first guide rail 8 and the first slider 9. A first detection plate 11 is bolted to one end of the first connecting frame 12 close to the support frame, and a first travel switch 10 is evenly fixed to one side of the support frame, so that the lifting of the first connecting frame 12 drives the first detection plate 11 to lift and lower inside the first travel switch 10, and the height of the first detection plate 11 is detected by the operation of the first travel switch 10 to adjust the lifting and lowering travel of the first connecting frame 12 to a limit; a height adjustment motor 13 is provided at the bottom of the first connecting frame 12 away from the support frame, so that the lifting and lowering adjustment of the first connecting frame 12 synchronously drives the height adjustment motor 13 to adjust;

[0038] The longitudinal translation mechanism 2 includes a connecting plate 14, a displacement driving motor 15, a screw rod 16, a threaded slider 17, a second guide rail 18, a second slider 19 and a bottom plate 20. The top of the connecting plate 14 is bolted to the height adjustment motor 13. The inner side of the bottom end of the connecting plate 14 is rotatably connected with the screw rod 16. One end of the top of the connecting plate 14 is fixed with the displacement driving motor 15. The output end of the displacement driving motor 15 is connected to the outer side of one end of the screw rod 16 through a synchronous belt, so that the displacement driving motor 15 drives the screw rod 16 to rotate through the synchronous belt. The outer side of the screw rod 16 is threadedly connected with a threaded slider 17. The bottom of the threaded slider 17 is fixed to the electromagnet 3, so that the rotation of the screw rod 16 drives the threaded slider 17 to move, so that the threaded slider 17 drives the electromagnet 3 to translate on the inner side of the bottom end of the connecting plate 14. The steel belt 5 is sucked by the work of the electromagnet 3 to cause it to deform and generate pressure. The pressure can be changed by adjusting the current.

[0039] A second guide rail 18 is fixed to the inner side of the bottom end of the connecting plate 14 and on both sides of the threaded slider 17. A second slider 19 is slidably connected to the outer side of the bottom end of the second guide rail 18. The bottom of the second slider 19 is fixed to the electromagnet 3, so that the translation of the electromagnet 3 is more stable through the sliding guide of the second guide rail 18 and the second slider 19. A bottom plate 20 is fixed to the bottom end of the connecting plate 14 and located at the bottom of the electromagnet 3. The bottom of the bottom plate 20 is bolted to the LCD suction plate 4. The LCD suction plate 4 is made of non-metallic material. The material of the LCD suction plate 4 is preferably ceramic, followed by Saigang and Teflon, so as to prevent the LCD suction plate 4 from affecting the conduction of magnetism.

[0040] The angle lifting mechanism 6 includes a fixed frame, a fourth guide rail, a fourth slider, a support plate 22, a first positioning frame 23, a second positioning frame 24, a first limit block 27, a second limit block 28, an angle lifting adjustment motor 29, a third guide rail 30, a third slider 31, a lifting block 32, a second detection plate 33, a second travel switch 34 and an adjusting threaded column 35. The first positioning frame 23 is bolted to one end of the top of the support plate 22, and the fourth guide rail is fixed to both sides of the other end of the top of the support plate 22. The fourth slider is slidably connected to the outer side of the top of the fourth guide rail. The tops of the two fourth sliders are fixed with a fixed frame, so that the fixed frame can translate and slide through the cooperation of the fourth guide rail and the fourth slider. The second positioning frame 24 is arranged on the top of the fixed frame away from the end of the first positioning frame 23, and the outer sides of the tops of the first positioning frame 23 and the second positioning frame 24 away from each other are bolted to the steel belt 5, so that the height position of the steel belt 5 is supported and fixed by the first positioning frame 23 and the second positioning frame 24.

[0041] The third guide rails 30 are fixed to both sides of the fixing frame near one end of the second positioning frame 24, and the third sliders 31 are fixed to both sides of the second positioning frame 24 near one end of the fixing frame. The third sliders 31 are slidably connected to the third guide rails 30, so that the second positioning frame 24 can be stably lifted and lowered by sliding the third guide rails 30 and the third sliders 31. The first limiting blocks 27 are fixed to both sides of the fixing frame near one end of the first positioning frame 23, and the second limiting blocks 28 are fixed to both sides of one end of the support plate 22 and at one end of the first limiting blocks 27 away from the first positioning frame 23, so that the sliding stroke of the fixing frame on the top of the support plate 22 is limited by the distance between the first limiting blocks 27 and the second limiting blocks 28, and the top of the fixing frame is slidably connected to the lifting block 32, and the lifting block 32 is bolted to the second positioning frame 24, so that the lifting and lowering of the lifting block 32 drives the second positioning frame 24 to rise and fall, and the lifting and lowering stroke of the second positioning frame 24 is limited by the height stroke of the lifting block 32 inside the fixing frame;

[0042] A second detection plate 33 is bolted to one side of the lifting block 32, and a second travel switch 34 is fixed to the inner side of the fixed frame and at the top and bottom of one side of the lifting block 32, so that the lifting and lowering of the lifting block 32 is limited by the sliding of the second detection plate 33 inside the second travel switch 34; a lifting angle adjustment motor 29 is fixed to the bottom of the fixed frame, and an adjustment threaded column 35 is connected to the output end of the lifting angle adjustment motor 29, and the outer side of the adjustment threaded column 35 is threadedly connected to the lifting block 32, so that the rotation of the adjustment threaded column 35 drives the lifting block 32 to lift and slide inside the fixed frame;

[0043] Tensioning mechanisms 7 are installed on both sides of the bottom of one end of the fixed frame away from the support plate 22, so that the distance between the fixed frame and the first positioning frame 23 can be adjusted by the operation of the tensioning mechanism 7, and then the distance between the second positioning frame 24 and the first positioning frame 23 can be adjusted to tension the steel belt 5. The tensioning mechanism 7 includes a push rod motor 25 and a synchronization block 26. Push rod motors 25 are fixed on both sides of the bottom of one end of the fixed frame away from the support plate 22. The push rod of the push rod motor 25 passes through the fixed frame and is connected to the synchronization block 26. The bottom of the synchronization block 26 is fixed to the support plate 22, so that the operation of the push rod motor 25 drives the synchronization block 26 to translate, and then through the fixation of the synchronization block 26 to the support plate 22, the push rod motor 25 controls the fixed frame to move in the direction away from the first positioning frame 23, and stably slides through the cooperation of the fourth guide rail and the fourth slider.

[0044] In other embodiments, the tensioning pressure of the push rod motor 25 is controlled by an electric proportional valve, thereby adjusting the tensioning degree of the steel belt 5 .

[0045] The use process of a magnetic attachment mechanism provided by the present invention is as follows: when in use, firstly, the LCD panel is adsorbed by the LCD suction plate 4, and the first connecting frame 12 is driven to be lifted and lowered by the operation of the height adjustment motor 13, and the lifting and lowering of the first connecting frame 12 is guided by the sliding of the first guide rail 8 and the first slider 9, and the lifting and lowering of the first connecting frame 12 is limited by the sliding of the first detection plate 11 on the inner side of different first travel switches 10, and the first connecting frame 12 drives the second connecting frame 21 to be lifted and lowered synchronously, so that the lifting and lowering of the second connecting frame 21 drives the LCD suction plate 4 to be lifted and lowered through the longitudinal translation mechanism 2;

[0046] Then, the polarizer is placed on the steel belt 5, and the steel belt 5 is installed on the top outer side of the first positioning frame 23 and the second positioning frame 24 away from one end by bolt connection;

[0047] Then, according to the operation of the angle lifting mechanism 6, the steel belt 5 is provided with an initial attachment angle. At this time, the angle lifting adjustment motor 29 is operated to drive the adjustment threaded column 35 to rotate, and the rotation of the adjustment threaded column 35 drives the threaded lifting block 32 to be lifted and lowered, so that the lifting and lowering of the lifting block 32 is limited by the sliding of the second detection plate 33 inside the second travel switch 34, and at the same time, the lifting and lowering of the lifting block 32 drives the second positioning frame 24 to be lifted and lowered synchronously, so that the second positioning frame 24 is synchronously lifted and lowered by the sliding connection between the third guide rail 30 and the third slider 31;

[0048] After the adjustment is completed, the electromagnet 3 works to adsorb and provide pressure on the steel belt 5, so that the polarizer is pressed against the LCD panel, and then the electromagnet 3 is driven to move by the longitudinal translation mechanism 2. At this time, the displacement driving motor 15 works to drive the screw rod 16 to rotate through the synchronous belt, and the rotation of the screw rod 16 drives the threaded slider 17 connected by the thread to move, and the movement of the threaded slider 17 drives the electromagnet 3 to translate, and the height adjustment motor 13 is moved in coordination through the sliding connection between the second guide rail 18 and the second slider 19; thereby, the entire polarizer is attached to the LCD panel.

[0049] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A magnetic attachment mechanism, characterized in that: The invention comprises an LCD height adjustment mechanism (1), wherein a longitudinal translation mechanism (2) is arranged at the bottom of one side of the LCD height adjustment mechanism (1), an electromagnet (3) is arranged on the inner side of the bottom end of the longitudinal translation mechanism (2), an LCD suction plate (4) is arranged at the bottom of the LCD suction plate (4), a steel belt (5) is arranged at the bottom of the steel belt (5), and an angle lifting mechanism (6) is arranged at the bottom of the steel belt (5), and the longitudinal translation mechanism (2) comprises a connecting plate (14), a displacement driving motor (15), a screw rod (16), a threaded slider (17) and a bottom plate (20), and the top of the connecting plate (14) is connected to the height adjustment motor (15), and the top of the connecting plate (14) is connected to the height adjustment motor (15), and the bottom of the steel belt (5 ... The connecting plate (14) is fixed with a degree adjustment motor (13) by bolts, the inner side of the bottom end of the connecting plate (14) is rotatably connected with a screw rod (16), one end of the top of the connecting plate (14) is fixed with a displacement drive motor (15), the output end of the displacement drive motor (15) is connected to the outer side of one end of the screw rod (16) through a synchronous belt, the outer side of the screw rod (16) is threadedly connected with a threaded slider (17), the bottom of the threaded slider (17) is fixed with the electromagnet (3), the bottom end of the connecting plate (14) and located at the bottom of the electromagnet (3) is fixed with a bottom plate (20), and the bottom of the bottom plate (20) is bolted to the LCD suction plate (4).

2. A magnetic attachment mechanism according to claim 1, characterized in that: The LCD height adjustment mechanism (1) comprises a support frame, a first guide rail (8), a first slider (9), a first connecting frame (12), a height adjustment motor (13) and a second connecting frame (21); the first guide rails (8) are fixed at both ends of one side of the support frame; the first slider (9) is slidably connected to the outer side of one side of the first guide rail (8); the first connecting frame (12) is fixed to one side of the two first sliders (9); the height adjustment motor (13) is fixed to one side of the top of the support frame; the push rod of the height adjustment motor (13) is fixed to the first connecting frame (12); and the height adjustment motor (13) is provided at the bottom of the first connecting frame (12) away from the support frame.

3. A magnetic attachment mechanism according to claim 2, characterized in that: A first detection plate (11) is bolted to one end of the first connecting frame (12) close to the supporting frame, and a first travel switch (10) is evenly fixed to one side of the supporting frame.

4. A magnetic attachment mechanism according to claim 1, characterized in that: A second guide rail (18) is fixed on the inner side of the bottom end of the connecting plate (14) and on both sides of the threaded slider (17). A second slider (19) is slidably connected to the outer side of the bottom end of the second guide rail (18). The bottom of the second slider (19) is fixed to the electromagnet (3).

5. The magnetic attachment mechanism according to claim 1, characterized in that: The angle lifting mechanism (6) comprises a fixed frame, a fourth guide rail, a fourth slider, a support plate (22), a first positioning frame (23), a second positioning frame (24), a first limit block (27), a second limit block (28), an angle lifting adjustment motor (29), a lifting block (32) and an adjustment threaded column (35), one end of the top of the support plate (22) is bolted with the first positioning frame (23), both sides of the other end of the top of the support plate (22) are fixed with the fourth guide rail, the outer side of the top of the fourth guide rail is slidably connected with the fourth slider, the top of the two fourth sliders is fixed with a fixed frame, the top of the fixed frame away from the first positioning frame (23) is provided with a second positioning frame (24), and the first positioning frame (23) and the first The outer sides of the two positioning frames (24) away from each other at the top are bolted to the steel belt (5), the first limit blocks (27) are fixed on both sides of the fixed frame close to the end of the first positioning frame (23), the second limit blocks (28) are fixed on both sides of one end of the support plate (22) and located at the end away from the first positioning frame (23) at the first limit block (27), the top of the fixed frame is slidably connected to the lifting block (32), the lifting block (32) is bolted to the second positioning frame (24), the bottom of the fixed frame is fixed to the angle adjustment motor (29), the output end of the angle adjustment motor (29) is connected to the adjustment threaded column (35), the outer side of the adjustment threaded column (35) is threadedly connected to the lifting block (32).

6. A magnetic attachment mechanism according to claim 5, characterized in that: A third guide rail (30) is fixed on both sides of the fixing frame close to one end of the second positioning frame (24), and a third slide block (31) is fixed on both sides of the second positioning frame (24) close to one end of the fixing frame, and the third slide block (31) is slidably connected to the third guide rail (30).

7. The magnetic attachment mechanism according to claim 5, characterized in that: A second detection plate (33) is bolted to one side of the lifting block (32), and a second travel switch (34) is fixed to the inner side of the fixing frame and located at the top and bottom of one side of the lifting block (32).

8. The magnetic attachment mechanism according to claim 5, characterized in that: A tensioning mechanism (7) is installed on both sides of the bottom of one end of the fixed frame away from the support plate (22), and the tensioning mechanism (7) comprises a push rod motor (25) and a synchronization block (26). A push rod motor (25) is fixed on both sides of the bottom of one end of the fixed frame away from the support plate (22), and a push rod of the push rod motor (25) passes through the fixed frame and is connected to the synchronization block (26), and the bottom of the synchronization block (26) is fixed to the support plate (22).

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