Photovoltaic solar panel back plate coating equipment

Abstract

The invention discloses photovoltaic solar panel back plate coating equipment, and belongs to the technical field of solar panel back plate coating. The photovoltaic solar panel back plate coating equipment comprises a rack, the top end of the inner side of the rack is slidably connected with a back plate placing assembly, and the top end of the outer side of the rack is slidably connected with a back plate coating assembly; and two sets of driving assemblies are mounted on the two sides of the rack correspondingly, and the two sets of driving assemblies are in transmission connection with the back plate placing assembly and the back plate coating assembly correspondingly. The vertical movement of the back plate placing plate is automatically converted into the horizontal clamping movement of the positioning clamping plates which are arranged in a #-shaped array, so that the back plate is centered and clamped, the gear of the coating roller is meshed with the tooth groove plate which is elastically suspended on the rack, and a floating pressure mechanism consisting of a spring and a connecting rod is utilized to press the back plate. The coating roller can adapt to tiny unevenness of the surface of the back plate, constant contact pressure is kept, the problem that the thickness of a coating layer is not uniform is solved, and the uniformity and consistency of coating quality are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of solar panel backsheet coating technology, specifically relating to a photovoltaic solar panel backsheet coating device. Background Technology

[0002] Photovoltaic solar panels, also known as solar cells, are devices that directly convert sunlight into electricity using the photovoltaic effect. With technological advancements and significant cost reductions, photovoltaic power generation has moved from high-tech space applications into everyday life, becoming a core force in the global energy transition. As a clean, renewable, and distributed energy source, it operates with near-zero emissions, effectively reducing dependence on fossil fuels and combating climate change. The backsheet of a photovoltaic solar panel, as a key component protecting the solar cells, has excellent insulation, weather resistance, and long-term moisture barrier properties.

[0003] Photovoltaic solar panel backsheet coating involves a precision coating process where special functional polymer materials are directly coated onto a base film in liquid form. After curing in an oven, a dense, multi-layered protective film is formed. Traditional equipment may use manual screws for fixing or simple one-way clamping devices. This method is time-consuming for loading and unloading, and the clamping force may be uneven. During the coating process, the backsheet is prone to slipping or lifting, affecting the coating quality and even producing defective products. Furthermore, ordinary coating equipment may use rollers with fixed pressure, which cannot flexibly adapt to slight unevenness or thickness variations of the backsheet, resulting in uneven coating thickness. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a photovoltaic solar panel backsheet coating device.

[0005] The technical solution adopted to solve the above technical problems is: a photovoltaic solar panel backsheet coating equipment, including a frame, a backsheet placement component slidably connected to the top inner side of the frame, a backsheet coating component slidably connected to the top outer side of the frame, and two sets of drive components installed on both sides of the frame, the two sets of drive components being respectively connected to the backsheet placement component and the backsheet coating component for transmission.

[0006] Furthermore, the backplate placement assembly includes a first slide plate, a backplate placement plate is slidably connected to the top of the first slide plate, and a plurality of positioning clamps are slidably connected to the top surface of the backplate placement plate, the plurality of positioning clamps being arranged in a grid array.

[0007] Through the above technical solution, the positioning clamps are set as a grid array, which can apply clamping force from the four sides of the back plate at the same time, completely restricting any movement of the back plate in the plane, preventing the slight slippage caused by the roller pressure during the coating process, ensuring the absolute accuracy of the coating position, and ensuring that the back plate is always flatly attached to the placement plate during coating.

[0008] Furthermore, the backplate coating assembly includes a second slide plate, and a coating roller is rotatably connected to the middle of the bottom end of the second slide plate. The cylindrical surface of the coating roller is slidably attached to the top surface of the backplate placement plate.

[0009] Through the above technical solution, the surface of the coating roller makes slight contact with the back plate placed on the back plate with a certain pressure. The liquid stored on the coating roller is transferred from the ink delivery roller to the coating roller and is evenly transferred to the surface of the back plate through this direct rolling contact.

[0010] Furthermore, each of the four corners of the first skateboard is slidably connected to a second sliding rod. The top of the second sliding rod is fixedly connected to the back plate placement plate. A long plate is fixedly connected to the bottom center of the back plate placement plate. The middle of the long plate is slidably connected to the first skateboard. Rollers are rotatably connected between the through ends of the long plate. Several second chamfered blocks are fixedly connected to the top of the first skateboard. Several first chamfered blocks are fixedly connected to the bottom of the positioning clamps. The bottom ends of the several first chamfered blocks are slidably connected to the tops of the corresponding second chamfered blocks.

[0011] Through the above technical solution, the four second sliding rods distributed at the corners form a stable sliding guide. When the back plate moves downward under the action of the rollers and the concave sliding groove, the first chamfered block fixed at the bottom slides along the inclined surface of the second chamfered block fixed at the top. Based on the inclined plane principle, the vertically downward force is decomposed into a horizontal component. This horizontal component pushes the first chamfered block, thereby causing the positioning clamp to move horizontally towards the center of the back plate, achieving clamping. When the placement plate rises, the inclined plane disengages, and the clamp usually returns to its original position by spring or gravity, releasing the back plate. All clamps move synchronously through mechanical means, with uniform clamping force. Furthermore, the purely mechanical structure ensures precise and reliable operation and simple maintenance.

[0012] Furthermore, a first sliding sleeve is fixedly connected to both sides of the bottom end of the first slide plate, and a first folding plate is fixedly connected to both sides of the top end of the first slide plate. The first folding plate is slidably connected to the frame through the frame, and a first ball sleeve is fixedly connected to the through end of the first folding plate. The first ball sleeve is connected to the drive assembly for transmission.

[0013] Through the above technical solution, the cooperation between the first sliding sleeve and the second guide rail achieves precise bottom guidance and load-bearing, while the cooperation between the first folding plate and the frame provides crucial anti-overturning stability. Finally, the cooperation between the first ball sleeve and the lead screw achieves efficient and precise power transmission, ensuring the control accuracy of displacement.

[0014] Furthermore, a liquid storage box is fixedly connected to the middle of the top of the second slide plate, and an ink delivery roller is slidably connected through the middle of the liquid storage box and the bottom of the second slide plate. The cylindrical surface of the ink delivery roller rotates and fits against the coating roller. Second folding plates are fixedly connected to both sides of the top of the second slide plate, and a second ball sleeve is fixedly connected to one side of the bottom of the second folding plate. The second ball sleeve is connected to the drive assembly for transmission. Second sliding sleeves are fixedly connected to both sides of the bottom of the second slide plate.

[0015] Through the above technical solution, the drive component can drive the second slide plate to reciprocate, meeting the needs of continuous operation. At the same time, the liquid storage box delivers liquid to the coating roller through the ink delivery roller. Meanwhile, the liquid storage source always moves with the coating component, avoiding the blockage, pressure instability or delay that may occur in long-distance ink supply pipelines, ensuring the continuity and uniformity of ink supply, and guaranteeing the coating quality from the source.

[0016] Furthermore, a round head plate is rotatably connected to both ends of the coating roller, a gear is fixedly connected to the end of the coating roller, a slide rod frame is slidably connected to the top of the round head plate, the top of the slide rod frame is fixedly connected to the bottom of the second slide plate, a linkage rod is rotatably connected to both sides of the round head plate, a slide seat is rotatably connected to the end of the linkage rod away from the round head plate, a slide rod frame is slidably connected to the middle of the slide seat, and a second spring is provided on the cylindrical surface of the slide rod frame, one end of the second spring is fixedly connected to the slide seat.

[0017] The above technical solution provides a stable and adjustable downward pressure to the coating roller. Throughout the process, the spring applies a relatively constant pressure to the coating roller through the linkage system, ensuring the uniformity of the coating thickness on the entire backing plate. This effectively compensates for the flatness error of the substrate and significantly improves product quality.

[0018] Furthermore, a first guide rail is fixedly connected to the top of both sides of the frame, and the top of the first guide rail is slidably connected to a second sliding sleeve. A slide plate is fixedly connected to the middle of the inner side of the frame, and a concave slide groove is provided in the middle of the slide plate. The inner side of the concave slide groove is slidably connected to a roller. Two second guide rails are fixedly connected to the bottom of the inner side of the frame. The two second guide rails are respectively located on both sides of the slide plate, and the top of the second guide rails is slidably connected to the first sliding sleeve.

[0019] Through the above technical solution, the two guide rails provide stable support and precise guidance, ensuring that there is no shaking of each component during movement, enabling it to complete the predetermined action accurately and stably, and guaranteeing the coating quality.

[0020] Furthermore, a fixing plate is fixedly connected to each of the two inner wall surfaces of the frame, and a first slide rod is slidably connected through both sides of the fixing plate. A toothed plate is fixedly connected to the top of the two first slide rods. The top of the toothed plate is meshed with a gear for transmission. A first spring is provided on the cylindrical surface of the first slide rod, and the first spring is located between the toothed plate and the fixing plate.

[0021] Through the above technical solution, an elastic meshing effect is formed, with the gear fixed at the end of the coating roller. When the drive assembly pushes the entire backplate coating assembly to move horizontally along the first guide rail, the gear at the end of the coating roller will move with the assembly, thereby moving along the fixed toothed plate, converting the linear movement of the coating assembly into the rotation of the coating roller itself. When the coating roller fluctuates, under the push of the first spring, the gear and the toothed plate are stably meshed, ensuring that the coating roller can roll stably and continuously, thus ensuring coating quality.

[0022] Furthermore, the drive assembly includes two lead screws symmetrically arranged vertically. The lead screw at the top is threadedly connected to a second ball sleeve, and the lead screw at the bottom is threadedly connected to a first ball sleeve. Mounting plates are rotatably connected to both ends of the two lead screws, and the mounting plates are fixedly connected to the frame. Pulleys are fixedly connected to the through ends on the same side of the two lead screws, and a transmission belt is frictionally connected between the pulleys. A servo motor is fixedly connected to one side surface of the mounting plate on the side away from the transmission belt, and the power output end of the servo motor is fixedly connected to the through end of the lead screw.

[0023] Through the above technical solution, the servo motor drives two lead screws to rotate simultaneously through the belt and pulley. Since the upper and lower lead screws are symmetrically arranged, they drive the back plate placement component and the back plate coating component to move back and forth alternately. This not only facilitates loading and unloading but also enables automatic coating operations during the movement, achieving a high degree of automation and high-speed production.

[0024] The beneficial effects of this invention are as follows: 1. This invention, through a mechanical linkage mechanism consisting of chamfered blocks and sliding plates, automatically converts the vertical movement of the backplate placement plate into the horizontal clamping movement of the positioning clamps arranged in a grid pattern, achieving rapid, automatic, and multi-directional synchronous centering and clamping of the backplate. This effectively overcomes the shortcomings of traditional manual or unidirectional clamping, such as low efficiency, easy displacement, and tendency to cause board warping, providing a crucial flat and fixed reference plane for obtaining high-quality uniform coating.

[0025] 2. This invention precisely converts the linear motion of the coating assembly into the rotational motion of the coating roller by meshing the gears of the coating roller with a toothed plate elastically suspended on the frame, ensuring strict synchronization between the coating linear speed and the moving speed. Simultaneously, a floating pressure mechanism composed of springs and connecting rods allows the coating roller to adapt to minute unevenness on the backing surface, maintaining constant contact pressure. The combination of these two elements fundamentally solves the technical problems of uneven coating thickness and the tendency to generate textures, significantly improving the uniformity and consistency of the coating quality. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional schematic diagram of the frame structure of the present invention; Figure 3 This is a first schematic diagram of the backplate placement assembly structure of the present invention; Figure 4 This is a second schematic diagram of the backplate placement assembly structure of the present invention; Figure 5 This is a three-dimensional schematic diagram of the backplate coating assembly structure of the present invention; Figure 6 This is a schematic diagram of the coating roller and its pressing structure of the present invention.

[0027] Reference numerals: 1. Frame; 101. First guide rail; 102. Second guide rail; 103. Slide plate; 104. Concave slide groove; 105. Fixing plate; 106. Toothed plate; 107. First slide rod; 108. First spring; 2. Back plate placement assembly; 201. First slide plate; 202. Second slide rod; 203. Back plate placement plate; 204. Positioning clamp; 205. First chamfer block; 206. Second chamfer block; 207. First sliding sleeve; 208. First ball sleeve; 209. First folding plate; 21 0. Long plate; 211. Roller; 3. Backplate coating assembly; 301. Second slide plate; 302. Liquid reservoir; 303. Ink delivery roller; 304. Second sliding sleeve; 305. Second folding plate; 306. Second ball bearing sleeve; 307. Slide rod frame; 308. Second spring; 309. Round head plate; 310. Coating roller; 311. Gear; 312. Linkage rod; 313. Slide base; 4. Drive assembly; 401. Lead screw; 402. Mounting plate; 403. Transmission belt; 404. Pulley; 405. Servo motor. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] like Figures 1 to 6 As shown, a photovoltaic solar panel backsheet coating device according to this embodiment includes a frame 1, a backsheet placement assembly 2 slidably connected to the top inner side of the frame 1, a backsheet coating assembly 3 slidably connected to the top outer side of the frame 1, and two sets of drive assemblies 4 respectively installed on both sides of the frame 1. The two sets of drive assemblies 4 are respectively connected to the backsheet placement assembly 2 and the backsheet coating assembly 3 for transmission.

[0030] like Figures 1 to 2 As shown, first guide rails 101 are fixedly connected to the top of both sides of the frame 1. The top of the first guide rails 101 is slidably connected to the second sliding sleeves 304. A slide plate 103 is fixedly connected to the middle of the inner side of the frame 1. A concave slide groove 104 is provided in the middle of the slide plate 103. The inner side of the concave slide groove 104 is slidably connected to the roller 211. Two second guide rails 102 are fixedly connected to the bottom of the inner side of the frame 1. The two second guide rails 102 are located on both sides of the slide plate 103. The top of the second guide rails 102 is slidably connected to the first sliding sleeves 207. The two inner wall surfaces of the frame 1 are respectively fixed A fixed plate 105 is connected, and first slide rods 107 are slidably connected through both sides of the fixed plate 105. A toothed plate 106 is fixedly connected to the top of both first slide rods 107. The top of the toothed plate 106 meshes with a gear 311 for transmission. A first spring 108 is provided on the cylindrical surface of the first slide rod 107, located between the toothed plate 106 and the fixed plate 105. The toothed plate 106 is not rigidly fixed to the frame 1, but rather forms a structure that can float slightly up and down by passing through the fixed plate 105 via the two first slide rods 107. The first spring 108 is sleeved on the first slide rod 107 and compressed between the toothed plate 106 and the fixed plate 105, thus providing an upward elastic support force for the toothed plate 106.

[0031] like Figure 2 As shown, the drive assembly 4 includes two lead screws 401 arranged symmetrically at opposite ends. The lead screw 401 at the top is threadedly connected to the second ball sleeve 306, and the lead screw 401 at the bottom is threadedly connected to the first ball sleeve 208. Mounting plates 402 are rotatably connected to both ends of the two lead screws 401, and the mounting plates 402 are fixedly connected to the frame 1. Pulleys 404 are fixedly connected to the through ends on the same side of the two lead screws 401, and a transmission belt 403 is frictionally connected between the pulleys 404. A servo motor 405 is fixedly connected to one side surface of the mounting plate 402 away from the transmission belt 403. The power output end of the servo motor 405 is fixedly connected to the through end of the lead screw 401. Only one servo motor 405 needs to be programmed and controlled to accurately manage the movement speed, position, and number of cycles of the entire coating process. The system has a simple structure, few failure points, is easy to maintain, and its reliability is far higher than that of the dual-motor coordinated control system.

[0032] like Figures 3 to 4As shown, the backplate placement assembly 2 includes a first slide plate 201, a backplate placement plate 203 is slidably connected to the top of the first slide plate 201, and a plurality of positioning clamps 204 are slidably connected to the top surface of the backplate placement plate 203. The plurality of positioning clamps 204 are arranged in a grid array, which can apply clamping force from the four sides of the backplate simultaneously, completely restricting any movement of the backplate in the plane, preventing the slight slippage caused by the roller pressure during the coating process, and ensuring the absolute accuracy of the coating position.

[0033] like Figures 3 to 4 As shown, second slide rods 202 are slidably connected to the four corners of the first slide plate 201. The top of the second slide rods 202 is fixedly connected to the back plate placement plate 203. These ensure that when the back plate placement plate 203 moves relative to the first slide plate 201, it can only slide vertically up and down, without swaying or tilting forward, backward, or left and right. A long plate 210 is fixedly connected to the middle of the bottom end of the back plate placement plate 203. The middle of the long plate 210 is slidably connected to the first slide plate 201. Rollers 211 are rotatably connected between the ends. Several second chamfered blocks 206 are fixedly connected to the top of the first slide plate 201. Several positioning clamps 204 are fixedly connected to the bottom of the first chamfered blocks 205. The bottom of the several first chamfered blocks 205 are slidably connected to the top of the corresponding second chamfered blocks 206. According to the principle of inclined plane, the vertically downward force is decomposed into a horizontal component force. This horizontal component force pushes the first chamfered block 205, thereby driving the positioning clamps 204 to move horizontally towards the center of the back plate to achieve clamping.

[0034] like Figures 3 to 4 As shown, first sliding sleeves 207 are fixedly connected to both sides of the bottom end of the first sliding plate 201, and first folding plates 209 are fixedly connected to both sides of the top end of the first sliding plate 201. The first folding plates 209 are slidably connected to the frame 1 through the plate. A first ball sleeve 208 is fixedly connected to the end of the first folding plate 209 through the plate. The first ball sleeve 208 is connected to the drive assembly 4 through the drive assembly 4. The cooperation between the first sliding sleeve 207 and the second guide rail 102 achieves precise bottom guidance and load bearing. The cooperation between the first folding plate 209 and the frame 1 provides crucial anti-overturning stability. Finally, the cooperation between the first ball sleeve 208 and the lead screw 401 achieves efficient and precise power transmission.

[0035] like Figures 5 to 6As shown, the backplate coating assembly 3 includes a second slide plate 301. A coating roller 310 is rotatably connected to the middle of the bottom end of the second slide plate 301. The cylindrical surface of the coating roller 310 is slidably attached to the top surface of the backplate placement plate 203. A liquid storage box 302 is fixedly connected to the middle of the top end of the second slide plate 301. An ink delivery roller 303 is slidably connected through the middle of the liquid storage box 302 and the bottom end of the second slide plate 301. The cylindrical surface of the ink delivery roller 303 is rotatably attached to the coating roller 310, and part of the ink delivery roller 303 is immersed in the liquid storage box. In section 302, its through-hole design allows it to carry liquid out of the box. Second folding plates 305 are fixedly connected to both sides of the top of the second slide plate 301. A second ball bearing sleeve 306 is fixedly connected to one side of the bottom of the second folding plate 305. The second ball bearing sleeve 306 is connected to the drive assembly 4. Second sliding sleeves 304 are fixedly connected to both sides of the bottom of the second slide plate 301. The second sliding sleeves 304 are fixed to both sides of the bottom of the second slide plate 301 and slide in cooperation with the first guide rail 101 mounted on the top of the frame 1. This is the main load-bearing and guiding mechanism, ensuring the straightness of the movement trajectory.

[0036] like Figures 5 to 6 As shown, round-head plates 309 are rotatably connected to both ends of the coating roller 310. A gear 311 is fixedly connected to the end of the coating roller 310. A slide rod frame 307 is slidably connected to the top of the round-head plate 309. The top of the slide rod frame 307 is fixedly connected to the bottom of the second slide plate 301. Linkage rods 312 are rotatably connected to both sides of the round-head plate 309. A slide seat 313 is rotatably connected to the end of the linkage rod 312 away from the round-head plate 309. The slide rod frame 307 is slidably connected to the middle of the slide seat 313. A second spring 308 is provided on the cylindrical surface of the slide rod frame 307. One end of the second spring 308 is fixedly connected to the slide seat 313. The floating pressure mechanism composed of the second spring 308 and the linkage rod 312 enables the coating roller 310 to adapt to the slight unevenness of the backing surface and maintain a constant contact pressure. The combination of these two features fundamentally solves the technical problems of uneven coating thickness and easy formation of textures, and significantly improves the uniformity and consistency of coating quality.

[0037] The working principle of this embodiment is as follows: The operator places the photovoltaic backsheet on the backsheet placement plate 203. At this time, the backsheet placement plate 203 is in a high position and the positioning clamp 204 is in a loose state.

[0038] The servo motor 405 starts, and the bottom lead screw 401 rotates, driving the first slide plate 201 to move along the second guide rail 102 towards the coating station via the first ball bearing sleeve 208. At the same time, the roller 211 on the first slide plate 201 slides within the concave groove 104 of the slide plate 103. The contour design of the concave groove 104 forces the roller 211 to descend when the first slide plate 201 moves, causing the back plate placement plate 203 to slide downward relative to the first slide plate 201 along the second slide bar 202.

[0039] During the descent of the backplate placement plate 203, the first chamfered block 205 fixed to the bottom of the positioning clamping plate 204 slides at an angle with the second chamfered block 206 fixed to the top of the first sliding plate 201. This movement converts the vertically downward force into a horizontally inward clamping force, pushing all the positioning clamping plates 204 arranged in a grid array to move synchronously towards the center, thereby clamping the backplate evenly from all sides.

[0040] While the backplate placement assembly 2 moves, the top lead screw 401 rotates, driving the second slide plate 301 to move along the first guide rail 101 via the second ball sleeve 306, causing the backplate coating assembly 3 to move toward the backplate.

[0041] When the backplate coating assembly 3 moves, the gear 311 at the end of the coating roller 310 meshes with the toothed plate 106 fixed on the frame 1, driving the coating roller 310 to rotate. At the same time, the ink delivery roller 303 draws ink from the liquid storage box 302 and, through its rotational contact with the coating roller 310, evenly transfers the ink to the coating roller 310.

[0042] Under the action of a spring pressure mechanism including a second spring 308, a linkage rod 312, and a slide block 313, the coating roller 310 slides against the backing plate surface with constant pressure. This mechanism allows the coating roller 310 to adapt to minor unevenness on the backing plate surface, ensuring uniform coating thickness. The backing plate coating assembly 3 moves at a constant speed to complete the coating of the entire backing plate.

[0043] After coating is completed, servo motor 405 reverses, driving two lead screws 401 to rotate in opposite directions. Backplate placement assembly 2 and backplate coating assembly 3 synchronously return to their initial positions.

[0044] When the backplate placement assembly 2 moves, the roller 211 slides along the rising section of the concave groove 104, pushing the backplate placement plate 203 to rise. The first chamfer block 205 pushes the second chamfer block 206 to disengage. The positioning clamp 204 slides outward under the reset force, automatically releasing the backplate, so that the operator can remove the coated backplate.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A photovoltaic solar panel backsheet coating equipment, comprising a frame (1), characterized in that: The inner top of the frame (1) is slidably connected to a back plate placement assembly (2), and the outer top of the frame (1) is slidably connected to a back plate coating assembly (3). Two sets of drive assemblies (4) are installed on both sides of the frame (1), and the two sets of drive assemblies (4) are respectively connected to the back plate placement assembly (2) and the back plate coating assembly (3) for transmission. The backplate placement assembly (2) includes a first slide plate (201), a backplate placement plate (203) is slidably connected to the top of the first slide plate (201), and a plurality of positioning clamps (204) are slidably connected to the top surface of the backplate placement plate (203), and the plurality of positioning clamps (204) are arranged in a grid array. The backplate coating assembly (3) includes a second slide plate (301), and a coating roller (310) is rotatably connected to the middle of the bottom end of the second slide plate (301). The cylindrical surface of the coating roller (310) is slidably attached to the top surface of the backplate placement plate (203).

2. The photovoltaic solar panel backsheet coating equipment according to claim 1, characterized in that, The first slide plate (201) has a second slide rod (202) slidably connected to each of its four corners. The top of the second slide rod (202) is fixedly connected to the back plate placement plate (203). The bottom middle of the back plate placement plate (203) is fixedly connected to a long plate (210). The middle of the long plate (210) is slidably connected to the first slide plate (201). A roller (211) is rotatably connected between the through ends of the long plate (210). The top of the first slide plate (201) is fixedly connected to several second chamfered blocks (206). The bottom ends of several positioning clamps (204) are fixedly connected to first chamfered blocks (205). The bottom ends of several first chamfered blocks (205) are slidably connected to the top of the corresponding second chamfered blocks (206).

3. The photovoltaic solar panel backsheet coating equipment according to claim 2, characterized in that, The first slide plate (201) is fixedly connected to the bottom two sides of the first slide sleeve (207) respectively, and the first folding plate (209) is fixedly connected to the top two sides of the first slide plate (201) respectively. The first folding plate (209) is slidably connected to the frame (1) through the first folding plate (209). The first ball sleeve (208) is fixedly connected to the through end of the first folding plate (209). The first ball sleeve (208) is connected to the drive assembly (4) through the drive assembly (4).

4. The photovoltaic solar panel backsheet coating equipment according to claim 3, characterized in that, A liquid storage box (302) is fixedly connected to the middle of the top of the second slide plate (301). An ink delivery roller (303) is slidably connected through the middle of the liquid storage box (302) and the bottom of the second slide plate (301). The cylindrical surface of the ink delivery roller (303) is rotated and attached to the coating roller (310). A second folding plate (305) is fixedly connected to both sides of the top of the second slide plate (301). A second ball sleeve (306) is fixedly connected to one side of the bottom of the second folding plate (305). The second ball sleeve (306) is connected to the drive assembly (4) for transmission. A second sliding sleeve (304) is fixedly connected to both sides of the bottom of the second slide plate (301).

5. The photovoltaic solar panel backsheet coating equipment according to claim 1, characterized in that, The coating roller (310) has a round head plate (309) rotatably connected to both ends. A gear (311) is fixedly connected to the end of the coating roller (310). A slide rod frame (307) is slidably connected to the top of the round head plate (309). The top of the slide rod frame (307) is fixedly connected to the bottom of the second slide plate (301). A linkage rod (312) is rotatably connected to both sides of the round head plate (309). A slide seat (313) is rotatably connected to the end of the linkage rod (312) away from the round head plate (309). A slide rod frame (307) is slidably connected to the middle of the slide seat (313). A second spring (308) is provided on the cylindrical surface of the slide rod frame (307). One end of the second spring (308) is fixedly connected to the slide seat (313).

6. The photovoltaic solar panel backsheet coating equipment according to claim 4, characterized in that, The top of both sides of the frame (1) is fixedly connected to a first guide rail (101), the top of the first guide rail (101) is slidably connected to a second sliding sleeve (304), a slide plate (103) is fixedly connected to the middle of the inner side of the frame (1), a concave slide groove (104) is provided in the middle of the slide plate (103), the inner side of the concave slide groove (104) is slidably connected to a roller (211), and two second guide rails (102) are fixedly connected to the bottom of the inner side of the frame (1), the two second guide rails (102) are respectively located on both sides of the slide plate (103), and the top of the second guide rail (102) is slidably connected to the first sliding sleeve (207).

7. The photovoltaic solar panel backsheet coating equipment according to claim 5, characterized in that, The frame (1) has two inner wall surfaces fixedly connected to fixed plates (105), and first slide rods (107) are slidably connected through both sides of the fixed plates (105). The top ends of the two first slide rods (107) are fixedly connected to a toothed plate (106). The top end of the toothed plate (106) is meshed with a gear (311) for transmission. A first spring (108) is provided on the cylindrical surface of the first slide rod (107). The first spring (108) is located between the toothed plate (106) and the fixed plate (105).

8. The photovoltaic solar panel backsheet coating equipment according to claim 4, characterized in that, The drive assembly (4) includes two lead screws (401) arranged symmetrically at the top and bottom. The lead screw (401) at the top is threadedly connected to the second ball sleeve (306), and the lead screw (401) at the bottom is threadedly connected to the first ball sleeve (208). Mounting plates (402) are rotatably connected to both ends of the two lead screws (401). The mounting plates (402) are fixedly connected to the frame (1). Pulleys (404) are fixedly connected to the through ends on the same side of the two lead screws (401). A transmission belt (403) is connected to the pulleys (404) through friction transmission. A servo motor (405) is fixedly connected to one side surface of the mounting plate (402) away from the transmission belt (403). The power output end of the servo motor (405) is fixedly connected to the through end of the lead screw (401).

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