A high-speed precision cutting device for photovoltaic thin films and a method of using the same

Abstract

The present invention relates to the technical field of film laying, and specifically to a high-speed precision cutting device for photovoltaic films, including a feeder, a film-drawing machine and a deflection corrector. The photovoltaic films to be cut are fed by the feeder and sequentially passed through the film-drawing machine and the deflection corrector. The device is characterized in that it also includes a transfer robot, which is located above the film-drawing machine and the deflection corrector. The feeder is a double-layer deflection corrector, which cuts the film roll to a fixed width and then delivers it to the film-drawing machine. The film-drawing machine cuts the film from the double-layer deflection corrector and lays it flat on a pallet in the film-drawing machine. The transfer robot transfers the entire film on the film-drawing machine to the deflection corrector after applying a suction cup. The deflection corrector cuts the film on the transfer robot at both ends and performs corresponding deflection correction on the glass position. The present invention also relates to a method for using a high-speed precision cutting device for photovoltaic films.

Description

Technical Field

[0001] The present invention relates to the technical field of film laying, and in particular to a high-speed precision cutting device for photovoltaic films and a use method thereof. Background Art

[0002] Photovoltaic module encapsulation is the core technology of the entire module manufacturing industry. During the production process, a sticky thermosetting glue (EVA Ethylene Vinyl Acetate) is required and placed in the middle of the laminated glass to ensure the close adhesion between the glass surface and the battery cell, and to ensure that the core component battery cell is cushioned by a double layer of EVA material. The tempered glass and the back panel material on the back greatly enhance the impact resistance and aging resistance of the module.

[0003] At present, the mainstream film laying process in the photovoltaic module manufacturing industry is rough cutting + fine cutting + laying process. Most of the material rolls are formed into a single film after rough cutting, and then wait on the rough cutting platform for the robot to transfer the film to the fine cutting table. There are fine cutting knives around the fine cutting table to cut off the four sides to obtain the film with precise dimensions on the four sides, and then the robot lays the film on the glass.

[0004] At present, the main problems of this type of equipment are: 1. The equipment process is complex, and the three machines plus the transfer robot occupy too much space; 2. There are too many tools that need to be manually adjusted, and the equipment is unstable during on-site use; 3. The existing equipment has a slow beat and it is difficult to meet the increasingly fast photovoltaic production line. Summary of the invention

[0005] In view of the shortcomings of the existing background technology, the purpose of the present invention is to provide a high-speed precision cutting device for photovoltaic thin films with a simple structure and easy use, and a method for using the same. The present invention completes the side cutting on both sides on a double-layer deviation correction feeder, and then, because the film will be deformed in the length direction due to the pulling action of the film during the film pulling process, a secondary cutting is performed in the length direction on the deviation correction machine to obtain the correct film size; by optimizing the equipment cutting process, the number of equipment is reduced, the floor space is reduced, the cost is reduced, and the stability of the equipment is improved; the high-speed precision cutting device for photovoltaic thin films has a simple structure, strong reliability, and low cost, and can achieve continuous production to save costs to a great extent and improve work efficiency.

[0006] To achieve the above, the technical solution of the present invention is: a high-speed precision cutting equipment for photovoltaic films, including a feeder, a film-stretching machine and a deflection corrector. The photovoltaic films to be cut are fed by the feeder and passed through the film-stretching machine and the deflection corrector in sequence. The feature is that it also includes a transfer robot, which is located above the film-stretching machine and the deflection corrector. The feeder is a double-layer deflection corrector, which cuts the film roll to a fixed width and then transports it to the film-stretching machine. The film-stretching machine cuts the film from the double-layer deflection corrector and lays it flat on a pallet in the film-stretching machine. The transfer robot transfers the entire film on the film-stretching machine to the deflection corrector after a suction cup is placed on it. The deflection corrector cuts the film on the transfer robot at both ends and performs corresponding deflection correction on the glass position.

[0007] Furthermore, the double-layer deflection correction loader includes a base frame, a movable frame, an unwinding mechanism, a welding mechanism, a side cutting mechanism, a cache mechanism, a deflection correction driving electric cylinder 1, a deflection correction sensor 1, a deflection correction driving electric cylinder 2 and a deflection correction sensor 2. The movable frame is movably connected to the base frame, the side cutting mechanism and the cache mechanism are fixedly connected to the movable frame, the unwinding mechanism is driven by the deflection correction driving electric cylinder 1 to move relative to the movable frame, the deflection correction sensor 1 is fixedly installed in front of the side cutting mechanism, the cache mechanism is connected to the film stretching machine, and the deflection correction sensor 2 is fixedly installed in front of the punching mechanism of the film stretching machine.

[0008] Furthermore, the side cutting mechanism includes a side cutting drive motor, a transmission shaft, a knife shaft, a bottom knife, a dovetail guide rail and a slitting knife group, one end of the transmission shaft is connected to the side cutting drive motor, the other end of the transmission shaft is connected to the knife shaft, the knife shaft is provided with a bottom knife, the dovetail guide rail is fixedly mounted on the movable frame and is located above the knife shaft, the slitting knife group is mounted on the dovetail guide rail and corresponds to the bottom knife, the slitting knife group and the bottom knife are tightly fitted to form a scissors mouth state to cut the film at a fixed width; the knife shaft is installed on the movable frame through a bearing and a bearing seat, the bearing on the knife shaft is clamped on the bearing seat and the bearing on the knife shaft is pressed by a pressure block, and a flat structure is provided on the knife shaft to match the recess on the transmission shaft.

[0009] Furthermore, the film-drawing machine includes a punching mechanism, a shearing mechanism, a conveyor line 1, a film-drawing mechanism, a pallet and a visual camera. The punching mechanism is located at the front side of the film-drawing machine and docked with the buffer mechanism. The shearing mechanism is located at the rear side of the punching mechanism. The film-drawing mechanism is located at the tail of the film-drawing machine. The conveyor line 1, the pallet and the visual camera are located between the shearing mechanism and the film-drawing mechanism. The pallet is located above the conveyor line 1, and the visual camera is located at the four corners above the pallet. The photovoltaic film enters the film-drawing machine from the buffer mechanism and passes through the punching mechanism, the shearing mechanism, the conveyor line 1, the pallet and the visual camera in turn to the film-drawing mechanism.

[0010] Furthermore, the carrier robot includes an I-shaped frame, a driving device and a suction cup mechanism. The I-shaped frame spans above the film stretching machine and the deviation correcting machine, and the driving device is slidably installed on the crossbeam of the I-shaped frame; the driving device includes servo motor 1, servo motor 2, a lifting rod and a mounting plate, the mounting plate is provided with a slider, the crossbeam is provided with a slide rail, the mounting plate is slidably connected to the crossbeam through the slider and the slide rail, the servo motor 1 is installed on the mounting plate and moves the mounting plate horizontally left and right through the gear rack transmission; the lifting rod is slidably connected to the mounting plate through the slider and the slide rail, the servo motor 2 is installed on the mounting plate and moves the lifting rod vertically up and down through the gear rack transmission, and the suction cup mechanism is fixedly connected to the bottom of the lifting rod in the driving device, so that the driving device drives the suction cup mechanism to move left and right and up and down.

[0011] Furthermore, the suction cup mechanism includes a fixed profile frame, an adjustable profile frame and a vacuum suction cup. Vacuum suction cups are provided under the fixed profile frame and the adjustable profile frame. Adjustable profile frames are provided on both sides of the fixed profile frame. The adjustable profile frame and the fixed profile frame are connected together through a fixing plate and the distance between the two is adjustable.

[0012] Furthermore, the deflection correction machine includes a frame, a deflection correction conveyor line, a shifting guillotine mechanism, an adsorption and leveling mechanism and a second conveyor line. The deflection correction conveyor line and the adsorption and leveling mechanism are fixedly connected to the frame. Two sets of shifting guillotine mechanisms are connected at both ends of the frame through guide rail sliders. Conveyor line two is fixedly installed on a fixed frame of the deflection correction conveyor line, and conveyor line two is docked with conveyor line one.

[0013] Furthermore, the shifting guillotine mechanism includes a moving plate one, a moving plate two, a guillotine module, a servo motor three, a servo motor four, a vertical shaft one and a vertical shaft two. One end of the guillotine module is connected to the vertical shaft one on the moving plate one by a circular hole, and the other end of the guillotine module is provided with a waist hole and is slidably connected to the vertical shaft two on the moving plate two. By giving different position parameters to the servo motor three and the servo motor four, the moving plate one and the moving plate two below the two ends of the guillotine module are offset to different positions.

[0014] Furthermore, the deviation-correcting conveyor line includes a fixed frame, conveyor line 2 is fixedly installed on the fixed frame, two sets of short-side positioning mechanisms are installed on the left side of the conveyor line, and two sets of short-side clamping mechanisms are installed on the corresponding right side, two sets of long-side positioning mechanisms are installed on the front side, and two sets of long-side clamping mechanisms are installed on the rear side; the adsorption and leveling mechanism includes a wind knife and an electrostatic generator rod, and the wind knife and the electrostatic generator rod are installed above the output port of conveyor line 2.

[0015] The present invention also provides a method for using a high-speed precision cutting device for photovoltaic thin films, characterized in that: based on the above-mentioned high-speed precision cutting device for photovoltaic thin films, the method for using is:

[0016] S1. The film is fed on the double-layer deflection correction machine, and the slitting knife group on the side cutting mechanism cuts the excess parts on both sides of the film to a fixed width. Since the film is deflected before entering the side cutting mechanism and before entering the film stretching machine after the side cutting mechanism is output, a film with more accurate size can be obtained;

[0017] S2. The film enters the buffer mechanism from the edge cutting mechanism. The buffer mechanism can balance the speed of unwinding and pulling the film, so that the film always maintains a constant tension;

[0018] S3. After the film comes out of the buffer mechanism, it passes through the punching mechanism on the film drawing machine and is punched by the punching mechanism, and then passes through the guillotine mechanism, which is cut to a fixed length according to the length of the template;

[0019] S4. The visual cameras at the four corners of the film-drawing table take pictures of the cut film to obtain the film's dimensions and position. At the same time, the industrial computer transmits the results to the PLC controller on the deviation correction machine.

[0020] S5. The PLC controller on the deviation correction machine controls the positioning mechanisms on the four sides of the glass to reposition the glass, and at the same time the shifting guillotine mechanism also makes corresponding deflection and shift;

[0021] S6. The transfer robot absorbs the film after the photo is taken, and then moves it to the shifting guillotine mechanism of the deviation correction machine. The guillotine mechanism performs secondary cutting in the length direction of the film to correct the deformation and deflection of the film caused by the tension on the film stretching machine;

[0022] S7. The transfer robot lays the film after secondary cutting on the glass after deviation correction;

[0023] S8. After the film is laid, when the glass is output from the deflection correction machine, the wind knife and electrostatic ion rod work to flatten the film and adsorb it on the glass.

[0024] The advantages of adopting the technical solution of the present invention are:

[0025] 1. The present invention completes the side cutting on both sides on a double-layer correcting feeder, and then since the film is deformed in the length direction due to the pulling action during the film drawing process, a secondary cutting is performed in the length direction on the correcting machine to obtain the correct film size; by optimizing the equipment cutting process, the number of equipment is reduced, the floor space is reduced, the cost is reduced, and the stability of the equipment is improved; the high-speed precision cutting equipment for photovoltaic films has a simple structure, strong reliability, and low cost, and can achieve continuous production, greatly saving costs and improving work efficiency.

[0026] 2. The present invention detects the outer dimensions and position of the film by visual means, and then corrects the position of the glass through 4 sets of positioning mechanisms and 4 sets of clamping mechanisms around the glass to obtain a precise laying position; the film is fixed by electrostatic adsorption, and the air pressure of a wind knife is used to flatten the film to avoid bulging of the film after laying by the precision cutting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the complete three-dimensional structure of a device for high-speed precision cutting of photovoltaic thin films according to the present invention;

[0029] Figure 2 It is a schematic diagram of a double-layer deviation-correcting feeder of the present invention;

[0030] Figure 3 is a schematic diagram of the linesman mechanism of the present invention;

[0031] Figure 4 It is a schematic diagram of a film drawing machine of the present invention;

[0032] Figure 5 It is a schematic diagram of the deviation correcting machine of the present invention;

[0033] Figure 6 It is a schematic diagram of the deviation correction conveying line in the deviation correction machine of the present invention;

[0034] Figure 7 It is a schematic diagram of a shifting guillotine mechanism in the deviation correcting machine of the present invention;

[0035] Figure 8 It is a schematic diagram of another aspect of the shifting guillotine mechanism in the deviation correcting machine of the present invention;

[0036] Fig. 9 It is a schematic diagram of the adsorption and leveling mechanism in the deviation correcting machine of the present invention;

[0037] Fig.10 A schematic diagram of a transfer robot of the present invention;

[0038] Fig.11 It is a schematic diagram of the driving device in the transfer robot of the present invention;

[0039] Fig.12 It is a schematic diagram of the suction cup mechanism in the transfer robot of the present invention;

[0040] Fig.13 It is a process flow chart of the present invention.

[0041] The marks in the above figure are: 1. Double-layer deviation correction feeder; 2. Film drawing machine; 3. Deviation correction machine; 4. Transfer robot;

[0042] 11. Base frame; 12. Movable frame; 13. Unwinding mechanism; 14. Welding mechanism; 15. Edge cutting mechanism; 16. Buffer mechanism; 171. Deviation correction drive electric cylinder 1; 172. Deviation correction sensor 1; 181. Deviation correction drive electric cylinder 2; 182. Deviation correction sensor 2; 151. Edge cutting drive motor; 152. Transmission shaft; 153. Knife shaft; 154. Bottom knife; 155. Dovetail guide rail; 156. Slitting knife group; 157. Bearing seat; 158. Press block;

[0043] 21. Punching mechanism; 22. Guillotine mechanism; 23. Conveyor line 1; 24. Film pulling mechanism; 25. Pallet; 26. Visual camera; 251. Black paper;

[0044] 31. Frame; 32. Correction conveyor line; 33. Shifting guillotine mechanism; 34. Adsorption and leveling mechanism; 35. Conveyor line 2; 321. Fixed frame; 322. Short side positioning mechanism; 323. Short side clamping mechanism; 324. Long side positioning mechanism; 325. Long side clamping mechanism; 331. Moving plate 1; 332. Guillotine module; 333. Servo motor 3; 334. Vertical axis 1; 335. Servo motor 4; 336. Vertical axis 2; 337. Moving plate 2; 341. Wind knife; 342. Static electricity generating rod;

[0045] 41. I-shaped frame; 411. Crossbeam; 42. Driving device; 43. Suction cup mechanism; 421. Servo motor 1; 422. Servo motor 2; 423. Lifting rod; 424. Mounting plate; 431. Fixed profile frame; 432. Adjustable profile frame; 433. Vacuum suction cup; 434. Fixed plate; 4311. Threaded hole; 4312. Both ends of the profile; 4331. Crossbar. DETAILED DESCRIPTION

[0046] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0047] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0048] like Figure 1 As shown, a high-speed precision cutting equipment for photovoltaic film includes a feeder, a film-drawing machine 2 and a deflection corrector 3. The photovoltaic film to be cut is fed by the feeder and sequentially passes through the film-drawing machine 2 and the deflection corrector 3. The feature is that it also includes a transfer robot 4, which is located above the film-drawing machine 2 and the deflection corrector 3. The feeder is a double-layer deflection correcting feeder 1, which cuts the film roll to a fixed width and then conveys it to the film-drawing machine 2. The film-drawing machine 2 cuts the film from the double-layer deflection correcting feeder 1 and lays it flat on a pallet in the film-drawing machine 2. The transfer robot 4 transfers the entire film on the film-drawing machine 2 to the deflection corrector 3 after passing through a suction cup. The deflection corrector 3 cuts the film on the transfer robot 4 at both ends and performs corresponding deflection correction on the glass position. The present invention completes the edge cutting on both sides on a double-layer deviation-correcting feeding machine, and then since the film is deformed in the length direction due to the film-pulling action during the film-pulling process, a secondary cutting is performed in the length direction on the deviation-correcting machine to obtain the correct film size; by optimizing the equipment cutting process, the number of equipment is reduced, the floor space is reduced, the cost is reduced, and the stability of the equipment is improved; the high-speed precision cutting equipment for photovoltaic films has a simple structure, strong reliability, and low cost, and can achieve continuous production, greatly saving costs and improving work efficiency.

[0049] The double-layer deflection correction feeding machine 1 includes a base frame 11, a movable frame 12, a reeling mechanism 13, a welding mechanism 14, a side cutting mechanism 15, a buffer mechanism 16, a deflection correction driving electric cylinder 171, a deflection correction sensor 172, a deflection correction driving electric cylinder 2 181 and a deflection correction sensor 182. The movable frame 12 is movably connected to the base frame 11, the side cutting mechanism 15 and the buffer mechanism 16 are fixedly connected to the movable frame 12, the reeling mechanism 13 is driven by the deflection correction driving electric cylinder 171 to move relative to the movable frame 12, the deflection correction sensor 172 is fixedly installed in front of the side cutting mechanism 15, the buffer mechanism 16 is connected to the film drawing machine 2, and the deflection correction sensor 2 182 is fixedly installed in front of the punching mechanism 21 of the film drawing machine 2.

[0050] Specifically, the double-layer deflection correction feeder 1 is composed of a base frame 11, a movable frame 12, an unwinding mechanism 13, a welding mechanism 14, a side cutting mechanism 15, and a buffer mechanism 16. The unwinding mechanism 13 is driven by a deflection correction driving electric cylinder 171, and can move relative to the movable frame 12. The deflection correction sensor 172 is fixedly installed in front of the side cutting mechanism 15; the side cutting mechanism 15 and the buffer mechanism 16 are fixedly installed on the movable frame 12, and the movable frame 12 is driven by a deflection correction driving electric cylinder 2 181, and can move relative to the base 11. The deflection correction sensor 182 is fixedly installed in front of the punching mechanism 21 of the film drawing machine 2.

[0051] The side cutting mechanism 15 includes a side cutting drive motor 151, a transmission shaft 152, a knife shaft 153, a bottom knife 154, a dovetail guide rail 155 and a slitting knife group 156. One end of the transmission shaft 152 is connected to the side cutting drive motor 151, and the other end of the transmission shaft 152 is connected to the knife shaft 153. The knife shaft 153 is provided with a bottom knife 154. The dovetail guide rail 155 is fixedly mounted on the movable frame 12 and is located above the knife shaft 153. The slitting knife group 156 is mounted on the dovetail guide rail 155 and corresponds to the bottom knife 154. The slitting knife group 156 and the bottom knife 154 are tightly attached to form a scissor mouth state to cut the film to a fixed width. The knife shaft 153 is installed on the movable frame 12 through a bearing and a bearing seat. The bearing on the knife shaft 153 is clamped on the bearing seat 157 and the bearing on the knife shaft is pressed by a pressure block 158. A flat structure 1531 is provided on the knife shaft 153 to cooperate with the recess 1521 on the transmission shaft 152, so that the edge cutting drive motor 151 can drive the bottom knife 154 on the knife shaft 153 to rotate.

[0052] Specifically, the distance between the two slitting knife groups 156 can be adjusted, and the position of the bottom knife 154 can be adjusted at the same time, so as to be compatible with different template widths. When the bottom knife 154 needs to be replaced or maintained, the pressing block 158 can be detached, and then the knife shaft 153 and the bottom knife 154 can be removed from the bearing seat 157. In particular, the knife shaft material can be selected from aluminum alloy to reduce weight.

[0053] During operation, the film passes through the unwinding mechanism 13, the welding mechanism 14, the deflection correction sensor 172, the side cutting mechanism 15, the buffer mechanism 16, the deflection correction sensor 182, and arrives at the film drawing machine 2. Since the film is subjected to the deflection correction movement of the deflection correction driving electric cylinder 171 when entering the side cutting mechanism 15, it is subjected to the deflection correction movement of the deflection correction driving electric cylinder 2 181 again after the side cutting mechanism 15 is cut and before entering the film drawing machine 2. Through the two deflection correction movements, the film can be guaranteed not to be deflected at the side cutting position.

[0054] The film-drawing machine 2 includes a punching mechanism 21, a shearing mechanism 22, a conveyor line 23, a film-drawing mechanism 24, a pallet 25 and a visual camera 26. The punching mechanism 21 is located at the front side of the film-drawing machine 2 and is connected to the buffer mechanism 16. The shearing mechanism 22 is located at the rear side of the punching mechanism 21. The film-drawing mechanism 24 is located at the tail of the film-drawing machine 2. The conveyor line 23, the pallet 25 and the visual camera 26 are located between the shearing mechanism 22 and the film-drawing mechanism 24. The pallet 25 is located above the conveyor line 23, and the visual camera 26 is located at the four corners above the pallet 25. The photovoltaic film enters the film-drawing machine 2 from the buffer mechanism 16 and passes through the punching mechanism 21, the shearing mechanism 22, the conveyor line 23, the pallet 25 and the visual camera 26 in turn to the film-drawing mechanism 24. The film that has been cut by the guillotine mechanism 22 is pulled onto the support plate 25 by the film pulling mechanism 24, and the visual camera 26 takes pictures of the four corners of the film. Black paper 251 is attached to the support plate 25 below the visual camera 26 to assist the camera in taking pictures. The punching mechanism, conveyor line, guillotine mechanism, and film pulling mechanism are all common film cutting mechanisms in the industry, and will not be described in detail.

[0055] The transfer robot 4 includes an I-shaped frame 41, a driving device 42 and a suction cup mechanism 43. The I-shaped frame 41 spans above the film drawing machine 2 and the deviation correcting machine 3. The driving device 42 is slidably installed on the crossbeam 411 of the I-shaped frame 41; the driving device 42 includes a servo motor 1 421, a servo motor 2 422, a lifting rod 423 and a mounting plate 424. The mounting plate 424 is provided with a slider, and a slide rail is provided on the crossbeam 411. The mounting plate 424 is slidably connected to the crossbeam 411 through the slider and the slide rail. Servo motor 1 421 is installed on the mounting plate 424 and drives the mounting plate 424 to move left and right in the horizontal direction through gear rack transmission; the lifting rod 423 is slidably connected to the mounting plate 424 through a slider and a slide rail, and servo motor 2 422 is installed on the mounting plate 424 and drives the lifting rod 423 to move up and down in the vertical direction through gear rack transmission. The suction cup mechanism 43 is fixedly connected to the bottom of the lifting rod 423 in the driving device 42, so that the driving device 42 drives the suction cup mechanism 43 to move left and right and up and down.

[0056] The driving device 42 is driven by a servo motor 1 421 to move horizontally left and right, and is driven by a servo motor 2 422 to move vertically up and down. The suction cup mechanism 43 is fixedly connected to the bottom of the lifting rod 423 on the driving device 42, and the driving device 42 thereby drives the suction cup mechanism 43 to move left and right and up and down.

[0057] The suction cup mechanism 43 includes a fixed profile frame 431, an adjustable profile frame 432 and a vacuum suction cup 433. The fixed profile frame 431 and the adjustable profile frame 432 are provided with vacuum suction cups 433 below. The fixed profile frame 431 is provided with adjustable profile frames 432 on both sides. The adjustable profile frame 432 and the fixed profile frame 431 are connected together through a fixing plate 434 and the distance between the two sides is adjustable. According to different photovoltaic panel sizes, the distance between the adjustable profile frame 432 and the fixed profile frame 431 can be adjusted, so that the suction cup mechanism 43 is compatible with different panel sizes.

[0058] A threaded hole 4311 is opened on the profile of the fixed profile frame 431, and sealants are used to seal the two ends 4312 of the profile of the fixed profile frame 431, so that the fixed profile frame 431 can play a ventilation role, the fixed profile frame 431 is connected to the adjustable profile frame 432, and the cross bar 4331 connecting the vacuum suction cup 433 is a hollow tube with closed ends. The hollow tube is connected to the fixed profile frame 431 and the adjustable profile frame 432, and the vacuum suction cup 433 is ventilated from the threaded hole 4311 through the air pipe.

[0059] The deflection correcting machine 3 includes a frame 31, a deflection correcting conveying line 32, a shifting guillotine mechanism 33, an adsorption and leveling mechanism 34, and a conveying line 2 35. The deflection correcting conveying line 32 and the adsorption and leveling mechanism 34 are fixedly connected to the frame 31. Two sets of shifting guillotine mechanisms 33 are connected to both ends of the frame 31 through guide rail sliders. The conveying line 2 35 is fixedly installed on the fixed frame 321 of the deflection correcting conveying line 32. The conveying line 2 35 is docked with the conveying line 1 23. When working, the conveying line 1 23 under the film drawing machine 2 conveys the glass to the conveying line 2 35 under the deflection correcting machine 3. The deflection correcting mechanism also includes a PLC controller for controlling each motor and sensor.

[0060] The shifting guillotine mechanism 33 comprises a moving plate 1 331, a moving plate 2 337, a guillotine module 332, a servo motor 333, a servo motor 4 335, a vertical shaft 1 334 and a vertical shaft 2 336. One end of the guillotine module 332 is connected to the vertical shaft 1 334 on the moving plate 1 331 by a round hole 3321, and the other end of the guillotine module 332 is provided with a waist hole 3322 which is slidably connected to the vertical shaft 2 336 on the moving plate 2 337. By giving different position parameters to the servo motor 333 and the servo motor 4 335, the moving plate 1 331 and the moving plate 2 337 below the two ends of the guillotine module 332 are offset to different positions, so that the guillotine module 332 can be cut at a certain angle according to the deflection of the film.

[0061] The deviation correction conveyor line 32 includes a fixed frame 321, and the conveyor line 35 is fixedly installed on the fixed frame 321. Two sets of short side positioning mechanisms 322 are installed on the left side of the conveyor line 35, and two sets of short side clamping mechanisms 323 are installed on the corresponding right side. Two sets of long side positioning mechanisms 324 are installed on the front side, and two sets of long side clamping mechanisms 325 are installed on the back side. The positioning mechanism includes a positioning wheel and a track, and the positioning wheel is installed at one end of the track; the clamping mechanism 325 includes a clamping wheel and a track, and the clamping wheel is slidably connected to the track, and the clamping wheel cooperates with the positioning wheel to achieve clamping. The positioning mechanism and the clamping mechanism 325 can also be realized by other existing structural forms, as long as positioning and clamping can be achieved.

[0062] During operation, the conveyor line 1 23 below the film drawing machine 2 conveys the glass to the conveyor line 2 35 below the deviation correcting machine 3, and then according to the film deviation results of visual inspection, two sets of short-side positioning mechanisms and two sets of long-side positioning mechanisms offset the glass accordingly, and two sets of short-side clamping mechanisms and two sets of long-side clamping mechanisms play an auxiliary positioning role.

[0063] The film sucked by the suction cup mechanism 431 on the transfer robot 4 is cut in the length direction by two sets of shifting guillotine mechanisms 33 at both ends of the deflection correction machine 3, and the shifting guillotine mechanisms 33 can be deflected accordingly according to the film deflection result detected by visual inspection.

[0064] The adsorption and leveling mechanism 34 includes an air knife 341 and an electrostatic generating rod 342, which are installed above the output port of the conveyor line 2 35. After the film is laid on the glass, when the conveyor line 2 35 outputs the glass to the deviation correcting machine 3, the compressed air generated by the air knife 341 will level the bulge between the film and the glass, and the static negative ions generated by the electrostatic generating rod 342 will adsorb the film and the glass.

[0065] Based on the above-mentioned high-speed precision cutting device for photovoltaic thin films, the present invention also provides a method for using the high-speed precision cutting device for photovoltaic thin films, and the method for using is:

[0066] S1. The film is fed on the double-layer deflection correction machine, and the slitting knife group on the side cutting mechanism cuts the excess parts on both sides of the film to a fixed width. Since the film is deflected before entering the side cutting mechanism and before entering the film stretching machine after the side cutting mechanism is output, a film with more accurate size can be obtained;

[0067] S2. The film enters the buffer mechanism from the side trimming mechanism. The buffer mechanism can balance the speed of unwinding and film drawing, so that the film always maintains a constant tension; specifically, the film passes through the welding mechanism 14, the deflection correction sensor 172, the side trimming mechanism 15, the buffer mechanism 16, and the deflection correction sensor 182 from the unwinding mechanism 13 to the film drawing machine 2. Since the film is corrected by the deflection correction driving electric cylinder 171 when entering the side trimming mechanism 15, it is corrected by the deflection correction driving electric cylinder 2 181 again after the side trimming mechanism 15 cuts and before entering the film drawing machine 2. Through two deflection correction movements, the film can be guaranteed not to be deflected at the side trimming cutting position.

[0068] S3. After the film comes out of the buffer mechanism, it passes through the punching mechanism on the film drawing machine and is punched by the punching mechanism, and then passes through the guillotine mechanism, which is cut to a fixed length according to the length of the template;

[0069] S4. The visual cameras at the four corners of the film-drawing table take pictures of the cut film to obtain the film's dimensions and position. At the same time, the industrial computer transmits the results to the PLC controller on the deviation correction machine.

[0070] S5. The PLC controller on the deviation correction mechanism controls the positioning mechanisms on the four sides of the glass to reposition the glass, and at the same time the shifting guillotine mechanism also makes corresponding deflection and shift;

[0071] S6. The transfer robot absorbs the film after the photo is taken, and then moves it to the shifting guillotine mechanism of the deviation correction machine. The guillotine mechanism performs secondary cutting in the length direction of the film to correct the deformation and deflection of the film caused by the tension on the film stretching machine;

[0072] S7. The transfer robot lays the film after secondary cutting on the glass after deviation correction;

[0073] Specifically, during operation, the conveyor line 23 below the film drawing machine 2 conveys the glass to the conveyor line 35 below the deviation correcting machine 3, and then according to the film deviation results of visual inspection, two sets of short-side positioning mechanisms and two sets of long-side positioning mechanisms offset the glass accordingly, and two sets of short-side clamping mechanisms and two sets of long-side clamping mechanisms play an auxiliary positioning role.

[0074] The film sucked by the suction cup mechanism 431 on the transfer robot 4 is cut in the length direction by two sets of shifting guillotine mechanisms 33 at both ends of the deflection correction machine 3, and the shifting guillotine mechanisms 33 can be deflected accordingly according to the film deflection result detected by visual inspection.

[0075] S8. After the film is laid, when the glass is output from the deflection correcting machine, the wind knife and the electrostatic ion rod work to sweep the film flat and adsorb it on the glass. Specifically, after the film is laid on the glass, when the conveyor line 2 35 outputs the glass from the deflection correcting machine 3, the compressed air generated by the wind knife 341 sweeps the bulge between the film and the glass flat, and the electrostatic negative ions generated by the electrostatic generating rod 342 adsorb the film and the glass.

[0076] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0077] Therefore, any omission, modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-speed precision cutting device for photovoltaic films, comprising a feeder, a film drawing machine (2) and a deflection correcting machine (3), wherein the photovoltaic films to be cut are fed by the feeder and sequentially passed through the film drawing machine (2) and the deflection correcting machine (3), characterized in that: The invention also comprises a transfer robot (4), which is located above the film-drawing machine (2) and the deflection-correcting machine (3). The feeder is a double-layer deflection-correcting feeder (1). The double-layer deflection-correcting feeder (1) cuts the film roll into a fixed width and then conveys it to the film-drawing machine (2). The film-drawing machine (2) cuts the film from the double-layer deflection-correcting feeder (1) and lays it flat on a support plate in the film-drawing machine (2). The transfer robot (4) transfers the entire film on the film-drawing machine (2) to the deflection-correcting machine (3) after the suction cup is attached. The deflection-correcting machine (3) cuts the film on the transfer robot (4) at both ends and performs corresponding deflection correction on the position of the glass.

2. A high-speed precision cutting device for photovoltaic thin films as claimed in claim 1, characterized in that: The double-layer deflection correction feeding machine (1) comprises a base frame (11), a movable frame (12), an unwinding mechanism (13), a welding mechanism (14), a side cutting mechanism (15), a buffer mechanism (16), a deflection correction driving electric cylinder 1 (171), a deflection correction sensor 1 (172), a deflection correction driving electric cylinder 2 (181) and a deflection correction sensor 2 (182); the movable frame (12) is movably connected to the base frame (11); the side cutting mechanism (15) and the buffer mechanism (16) are fixedly connected to the movable frame (12); the unwinding mechanism (13) is driven by the deflection correction driving electric cylinder 1 (171) to move relative to the movable frame (12); the deflection correction sensor 1 (172) is fixedly installed in front of the side cutting mechanism (15); the buffer mechanism (16) is connected to the film drawing machine (2); and the deflection correction sensor 2 (182) is fixedly installed in front of the punching mechanism (21) of the film drawing machine (2).

3. A high-speed precision cutting device for photovoltaic thin films as claimed in claim 2, characterized in that: The side cutting mechanism (15) comprises a side cutting drive motor (151), a transmission shaft (152), a knife shaft (153), a bottom knife (154), a dovetail guide rail (155) and a slitting knife group (156), one end of the transmission shaft (152) is connected to the side cutting drive motor (151), the other end of the transmission shaft (152) is connected to the knife shaft (153), the knife shaft (153) is provided with a bottom knife (154), the dovetail guide rail (155) is fixedly mounted on the movable frame (12) and is located above the knife shaft (153), and the slitting knife group (156) is connected to the side cutting drive motor (151). 56) is installed on the dovetail guide rail (155) and corresponds to the bottom knife (154), and the slitting knife group (156) and the bottom knife (154) are closely attached to form a scissor mouth state to cut the film to a fixed width; the knife shaft (153) is installed on the movable frame (12) through a bearing and a bearing seat, the bearing on the knife shaft (153) is clamped on the bearing seat (157) and the bearing on the knife shaft is pressed by a pressing block (158), and a flat structure (1531) is provided on the knife shaft (153) to match the notch (1521) on the transmission shaft (152).

4. A high-speed precision cutting device for photovoltaic thin films as claimed in claim 2 or 3, characterized in that: The film drawing machine (2) comprises a punching mechanism (21), a guillotine mechanism (22), a conveyor line (23), a film drawing mechanism (24), a support plate (25) and a visual camera (26). The punching mechanism (21) is located at the front side of the film drawing machine (2) and is connected to the buffer mechanism (16). The guillotine mechanism (22) is located at the rear side of the punching mechanism (21). The film drawing mechanism (24) is located at the rear of the film drawing machine (2). The conveyor line (23) and the support plate (25) are connected to the front side of the film drawing machine (2). and a visual camera (26) are located between the shear mechanism (22) and the film-drawing mechanism (24); the support plate (25) is located above the conveyor line (23); and the visual camera (26) is located at the four corners above the support plate (25); the photovoltaic film enters the film-drawing machine (2) from the buffer mechanism (16) and passes through the punching mechanism (21), the shear mechanism (22), the conveyor line (23), the support plate (25) and the visual camera (26) in sequence to the film-drawing mechanism (24).

5. The high-speed precision cutting device for photovoltaic thin films according to claim 1, characterized in that: The transfer robot (4) comprises an I-shaped frame (41), a driving device (42) and a suction cup mechanism (43); the I-shaped frame (41) spans above the film drawing machine (2) and the deviation correcting machine (3); the driving device (42) is slidably mounted on the crossbeam (411) of the I-shaped frame (41); the driving device (42) comprises a servo motor 1 (421), a servo motor 2 (422), a lifting rod (423) and a mounting plate (424); the mounting plate (424) is provided with a slider; the crossbeam (411) is provided with a slide rail; the mounting plate (424) is slidably connected to the crossbeam through the slider and the slide rail. (411), servo motor 1 (421) is installed on the mounting plate (424) and drives the mounting plate (424) to move left and right in the horizontal direction through gear rack transmission; the lifting rod (423) is slidably connected to the mounting plate (424) through a slider and a slide rail, servo motor 2 (422) is installed on the mounting plate (424) and drives the lifting rod (423) to move up and down in the vertical direction through gear rack transmission, and the suction cup mechanism (43) is fixedly connected to the bottom of the lifting rod (423) in the driving device (42), so that the driving device (42) drives the suction cup mechanism (43) to move left and right and up and down.

6. A high-speed precision cutting device for photovoltaic thin films as claimed in claim 5, characterized in that: The suction cup mechanism (43) comprises a fixed profile frame (431), an adjustable profile frame (432) and a vacuum suction cup (433); vacuum suction cups (433) are provided below the fixed profile frame (431) and the adjustable profile frame (432); adjustable profile frames (432) are provided on both sides of the fixed profile frame (431); the adjustable profile frame (432) and the fixed profile frame (431) are connected together via a fixing plate (434), and the distance between the two sides is adjustable.

7. The high-speed precision cutting device for photovoltaic thin films according to claim 4, characterized in that: The deflection correction machine (3) comprises a frame (31), a deflection correction conveyor line (32), a shifting guillotine mechanism (33), an adsorption and leveling mechanism (34) and a second conveyor line (35); the deflection correction conveyor line (32) and the adsorption and leveling mechanism (34) are fixedly connected to the frame (31); two sets of shifting guillotine mechanisms (33) are connected to both ends of the frame (31) through guide rail sliders; the second conveyor line (35) is fixedly mounted on a fixed frame (321) of the deflection correction conveyor line (32); and the second conveyor line (35) is butt-jointed with the first conveyor line (23).

8. The high-speed precision cutting device for photovoltaic thin films according to claim 7, characterized in that: The shifting guillotine mechanism (33) comprises a moving plate 1 (331), a moving plate 2 (337), a guillotine module (332), a servo motor 3 (333), a servo motor 4 (335), a vertical shaft 1 (334) and a vertical shaft 2 (336); one end of the guillotine module (332) is connected to the vertical shaft 1 (334) on the moving plate 1 (331) by a round hole (3321); the other end of the guillotine module (332) is provided with a waist hole (3322) and is slidably connected to the vertical shaft 2 (336) on the moving plate 2 (337); by giving different position parameters to the servo motor 3 (333) and the servo motor 4 (335), the moving plate 1 (331) and the moving plate 2 (337) below the two ends of the guillotine module (332) are offset to different positions.

9. A high-speed precision cutting device for photovoltaic thin films as claimed in claim 8, characterized in that: The deviation-correcting conveyor line (32) comprises a fixed frame (321), and the conveyor line 2 (35) is fixedly mounted on the fixed frame (321). Two sets of short-side positioning mechanisms (322) are mounted on the left side of the conveyor line 35, and two sets of short-side clamping mechanisms (323) are mounted on the corresponding right side. Two sets of long-side positioning mechanisms (324) are mounted on the front side, and two sets of long-side clamping mechanisms (325) are mounted on the rear side. The adsorption and leveling mechanism (34) comprises an air knife (341) and an electrostatic generating rod (342), and the air knife (341) and the electrostatic generating rod (342) are mounted above the output port of the conveyor line 2 (35).

10. A method for using a high-speed precision cutting device for photovoltaic thin films, characterized in that: A high-speed precision cutting device for photovoltaic thin films according to any one of claims 1 to 9, wherein the method of use is: S1. The film is fed on the double-layer deflection correction machine, and the slitting knife group on the side cutting mechanism cuts the excess parts on both sides of the film to a fixed width. Since the film is deflected before entering the side cutting mechanism and before entering the film stretching machine after the side cutting mechanism is output, a film with more accurate size can be obtained; S2. The film enters the buffer mechanism from the edge cutting mechanism. The buffer mechanism can balance the speed of unwinding and pulling the film, so that the film always maintains a constant tension; S3. After the film comes out of the buffer mechanism, it passes through the punching mechanism on the film drawing machine and is punched by the punching mechanism, and then passes through the guillotine mechanism, which is cut to a fixed length according to the length of the template; S4. The visual cameras at the four corners of the film-drawing table take pictures of the cut film to obtain the film's dimensions and position. At the same time, the industrial computer transmits the results to the PLC controller on the deviation correction machine. S5. The PLC controller on the deviation correction machine controls the positioning mechanisms on the four sides of the glass to reposition the glass, and at the same time the shifting guillotine mechanism also makes corresponding deflection and shift; S6. The transfer robot absorbs the film after the photo is taken, and then moves it to the shifting guillotine mechanism of the deviation correction machine. The guillotine mechanism performs secondary cutting in the length direction of the film to correct the deformation and deflection of the film caused by the tension on the film stretching machine; S7. The transfer robot lays the film after secondary cutting on the glass after deviation correction; S8. After the film is laid, when the glass is output from the deviation correcting machine, the wind knife and electrostatic ion rod work to flatten the film and adsorb it on the glass.

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