Photovoltaic solar panel back plate coating equipment

Abstract

The invention relates to the technical field of solar panel back plate spraying, and discloses photovoltaic solar panel back plate coating equipment which comprises a conveying belt and further comprises a U-shaped frame fixedly installed at the top of the conveying belt; the transverse plate is horizontally and fixedly mounted between the two vertical edges of the U-shaped frame; the number of the spray heads is multiple, the multiple spray heads are linearly and evenly distributed at the bottom of the transverse plate, two spray holes are formed in the tail end of each spray head, and a shell is fixedly installed on the surface of each spray head; the material supply assembly is used for supplying materials to the spray head; and the detecting and cleaning assembly is used for detecting the circulation state of the materials in the spray head. When a photovoltaic solar panel back plate is sprayed, whether a working spraying hole is blocked or not can be automatically detected through the impeller, in addition, the blocked spraying hole can be blocked, the other spraying hole can be started at the same time, the situation that the subsequent spraying quality of the photovoltaic solar panel back plate is reduced during spraying is avoided, and the spraying quality of the photovoltaic solar panel back plate is improved. And the use effect of the equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of solar panel backplane spraying, and in particular to a photovoltaic solar panel backplane coating device. Background Art

[0002] The solar backsheet is a key component in solar photovoltaic modules, usually located on the back of the photovoltaic module. As a protective layer of the photovoltaic module, it plays the role of isolation, protection and insulation. It also has an important impact on the performance and life of the photovoltaic module. The solar backsheet needs to be sprayed during reproduction to increase the performance of the solar backsheet.

[0003] The current photovoltaic solar panel backplane coating equipment does not have the function of detecting and automatically clearing the nozzle blockage when spraying the solar panel backplane. As a result, when the nozzle for spraying the solar panel backplane is blocked, the subsequent spraying continues as usual, which reduces the subsequent spraying quality of the solar panel backplane. Therefore, there is an urgent need to design a photovoltaic solar panel backplane coating equipment. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a photovoltaic solar panel backplane coating device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A photovoltaic solar panel back plate coating device, comprising a conveyor belt, and further comprising: U-shaped frame, which is fixedly installed on the top of the conveyor belt; Horizontal plate: The horizontal plate is fixedly installed horizontally between the two vertical sides of the U-shaped frame; There are multiple nozzles, which are evenly distributed in a straight line at the bottom of the horizontal plate. Two spray holes are opened at the end of each nozzle, and a shell is fixedly installed on the surface of each nozzle; A feeding assembly, which is arranged on a U-shaped frame and is used to feed materials to the nozzle; A detection and cleaning component, wherein there are multiple detection and cleaning components, and the multiple detection and cleaning components are respectively arranged inside the multiple nozzles and the shell, and the detection and cleaning components are used to detect the state of material flow inside the nozzle.

[0006] As a further technical solution of the present invention, the detection and cleaning component includes: an impeller, which is rotatably installed inside the nozzle, a rotating rod is horizontally fixedly installed on the side of the impeller, the end of the rotating rod passes through the connecting surface of the nozzle and the shell, a second fixed disk is fixedly sleeved on the surface of the rotating rod, the second fixed disk is located inside the shell, and a sleeve disk is also rotatably sleeved on the surface of the rotating rod.

[0007] As a further technical solution of the present invention, a plurality of first movable rods are rotatably installed on the side of the second fixed plate close to the sleeve plate, a counterweight block is rotatably installed on the end of each first movable rod away from the second fixed plate, a second movable rod is rotatably installed on the side corresponding to each counterweight block, an arc block is rotatably installed on the end of each second movable rod, an annular groove is opened on the side of the sleeve plate close to the second fixed plate, and a plurality of arc blocks are slidably installed inside the annular groove.

[0008] As a further technical solution of the present invention, a slide is horizontally fixedly installed on the top of the shell, a tooth plate is horizontally arranged below the slide, a fixed plate is vertically fixedly installed on the top of the tooth plate, the top of the fixed plate is slidably installed inside the slide, a second spring rod is fixedly installed on the inner end of the slide, and the telescopic end of the second spring rod is fixedly installed on the side of the fixed plate.

[0009] As a further technical solution of the present invention, an extension plate is horizontally fixedly installed on the surface of the sleeve disc, a hinged rod is hinged on the side of the extension plate, the other end of the hinged rod is hinged to the side of the tooth plate, two symmetrically arranged limit sleeve plates are fixed on the inner wall of the nozzle, and a dredging mechanism is arranged inside the nozzle and the shell. There are two dredging mechanisms, and the two dredging mechanisms are arranged in parallel. The dredging mechanism is used to dredge the blocked spray holes.

[0010] As a further technical solution of the present invention, the dredging mechanism includes: a turntable, which is rotatably arranged inside the nozzle, a first connecting rod is rotatably installed on the outer edge of the side of the turntable, a dredging rod is slidably sleeved on the corresponding limiting sleeve, and the end of the first connecting rod away from the turntable is rotatably installed on the top of the dredging rod.

[0011] As a further technical solution of the present invention, a rotating shaft is horizontally fixedly installed on the side of the turntable, the end of the rotating shaft passes through the connecting surface of the nozzle and the shell, a limiting plate is vertically installed on the bottom of the shell, and a shaft is horizontally rotatably installed at the end of the side of the limiting plate near the rotating shaft. The shaft and the opposite ends of the rotating shaft are rotatably connected, and a first gear is fixedly sleeved on the end surface of the rotating shaft near the shaft.

[0012] As a further technical solution of the present invention, a first spring rod is vertically installed at the top of the shell, the fixed end and the telescopic end of the first spring rod are slidably connected by a spline, and an L-shaped plate is fixedly installed at the bottom of the telescopic end of the first spring rod, the horizontal side of the L-shaped plate is provided with a slope, and the vertical side of the L-shaped plate is located between adjacent teeth of the first gear.

[0013] As a further technical solution of the present invention, a first fixed plate is fixedly sleeved on the surface of the shaft rod, a torsion spring is sleeved on the surface of the shaft rod, two ends of the torsion spring are respectively fixedly installed on the opposite surfaces of the first fixed plate and the first gear, two ring-shaped and evenly distributed shifting rods are fixed on the surface of the first fixed plate, and the shifting rods are L-shaped. When the horizontal edge of the shifting rod contacts the slope, the shifting rod slides between the horizontal edge and the slope. A one-way bearing is sleeved on the surface of the shaft rod, and a second gear is fixedly sleeved on the outer ring of the one-way bearing, and the second gear is meshed with the gear plate.

[0014] As a further technical solution of the present invention, the feeding assembly includes: a material box, which is installed on the top of the horizontal side of the U-shaped frame, a liquid pump is installed inside the material box, and a multi-way pipe connected to the liquid pump inside the material box is installed at the bottom of the horizontal side of the U-shaped frame, and multiple ends of the multi-way pipe are installed on the top of the horizontal plate, and the multiple ends of the multi-way pipe are respectively connected to multiple nozzles.

[0015] The beneficial effects of the present invention are: Firstly, the present invention, by setting up the detection cleaning component and the feeding component, can automatically detect whether the working spray hole is blocked through the impeller when spraying the photovoltaic solar panel back plate, and can also block the blocked spray hole and activate another spray hole at the same time, thereby avoiding the situation of reducing the subsequent spraying quality of the photovoltaic solar panel back plate during spraying, thereby improving the use effect of the equipment; Secondly, the present invention, through the arrangement of the unblocking component and the detection and cleaning component, can stop the rotation of the impeller after the working spray hole is blocked, so as to detect whether the spray hole is blocked; and when the spray hole is blocked, the spray hole can be unblocked by moving two unblocking rods up and down, thereby improving the coating effect on the back of the photovoltaic solar panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a photovoltaic solar panel backplane coating device proposed by the present invention; Figure 2 This is a schematic diagram of a U-shaped frame of a photovoltaic solar panel backplane coating equipment proposed by the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of a nozzle of a photovoltaic solar panel back sheet coating device proposed by the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of a shell of a photovoltaic solar panel backplane coating device proposed by the present invention; Figure 5 for Figure 4 A magnified schematic diagram of part A; Figure 6 This is a schematic diagram of the structure of a photovoltaic solar panel backplane coating device proposed by the present invention after removing the nozzle and the shell; Figure 7 for Figure 6 A magnified schematic diagram of part B; Figure 8 for Figure 6 A magnified schematic diagram of part C; Fig. 9 A schematic diagram of an L-shaped plate and its connection structure of a photovoltaic solar panel backplane coating device proposed in the present invention.

[0017] In the figure: 1. conveyor belt; 2. U-shaped frame; 3. material box; 4. multi-way pipe; 5. cross plate; 6. nozzle; 7. shell; 8. spray hole; 9. impeller; 10. dredging rod; 11. limit sleeve; 12. turntable; 13. first connecting rod; 14. rotating shaft; 15. rotating rod; 16. tooth plate; 17. fixed plate; 18. slideway; 19. limit plate; 20. shaft rod; 21. first gear; 22. torsion spring; 23. first fixed plate; 24. lever; 25. second gear; 26. one-way bearing; 27. first spring rod; 28. second fixed plate; 29. ​​first movable rod; 30. second movable rod; 31. counterweight; 32. sleeve; 33. annular groove; 34. extension plate; 35. hinge rod; 36. L-shaped plate; 37. ramp; 38. second spring rod. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Please see attached Figure 1 -Attached Fig. 9 , a photovoltaic solar panel back plate coating equipment, including a conveyor belt 1, and also includes: a U-shaped frame 2, a cross plate 5, a nozzle 6, a feeding component and a detection and cleaning component, the U-shaped frame 2 is fixedly installed on the top of the conveyor belt 1, the cross plate 5 is horizontally fixedly installed between the two vertical sides of the U-shaped frame 2, there are multiple nozzles 6, and the multiple nozzles 6 are evenly distributed in a straight line at the bottom of the cross plate 5, each nozzle 6 has two spray holes 8 at the end, and a shell 7 is fixedly installed on the surface of each nozzle 6, the feeding component is arranged on the U-shaped frame 2, and the feeding component is used to feed the nozzle 6, there are multiple detection and cleaning components, and the multiple detection and cleaning components are respectively arranged inside the multiple nozzles 6 and the shell 7, and the detection and cleaning component is used to detect the state of material flow inside the nozzle 6; As described above, when coating the photovoltaic solar panel back plate, the blocked spray hole 8 can be automatically cleaned and another spray hole 8 can be simultaneously enabled for spraying, thereby ensuring the quality of continuous spraying of the photovoltaic solar panel back plate.

[0021] Please see attached Figure 2 -Attached Fig. 9In a preferred embodiment, the detection and cleaning component includes: an impeller 9, which is rotatably installed inside the nozzle 6, and a rotating rod 15 is horizontally fixedly installed on the side of the impeller 9. The end of the rotating rod 15 passes through the connecting surface of the nozzle 6 and the shell 7. A second fixed disk 28 is fixedly sleeved on the surface of the rotating rod 15. The second fixed disk 28 is located inside the shell 7. A sleeve disk 32 is also rotatably sleeved on the surface of the rotating rod 15. A plurality of first movable rods 29 are rotatably installed on the side of the second fixed disk 28 close to the sleeve disk 32. A counterweight block 31 is rotatably installed on the end of each first movable rod 29 away from the second fixed disk 28. A second movable rod 30 is rotatably installed on the side corresponding to each counterweight block 31. An arc block is rotatably installed on the end of each second movable rod 30. An annular groove 3 is provided on the side of the sleeve disk 32 close to the second fixed disk 28. 3. Multiple arc blocks are slidably installed inside the annular groove 33. A slideway 18 is horizontally fixedly installed on the top of the shell 7. A tooth plate 16 is horizontally arranged below the slideway 18. A fixed plate 17 is vertically fixedly installed on the top of the tooth plate 16. The top of the fixed plate 17 is slidably installed inside the slideway 18. A second spring rod 38 is fixedly installed on the inner end of the slideway 18. The telescopic end of the second spring rod 38 is fixedly installed on the side of the fixed plate 17. An extension plate 34 is horizontally fixedly installed on the surface of the sleeve 32. A hinged rod 35 is hinged on the side of the extension plate 34. The other end of the hinged rod 35 is hinged on the side of the tooth plate 16. Two symmetrically arranged limit sleeve plates 11 are fixed on the inner wall of the nozzle 6. A dredging mechanism is arranged inside the nozzle 6 and the shell 7. There are two dredging mechanisms, and the two dredging mechanisms are arranged in parallel. The dredging mechanism is used to dredge the blocked spray hole 8. Specifically, when the spray hole 8 in the working state is blocked, the flow rate of the paint inside the spray head 6 is reduced, and the rotation speed of the impeller 9 is further reduced, so that the state of the paint circulation inside the spray head 6 can be detected by the rotating impeller 9.

[0022] Please see attached Figure 2 -Attached Fig. 9In a preferred embodiment, the dredging mechanism includes: a turntable 12, which is rotatably arranged inside the nozzle 6, a first connecting rod 13 is rotatably installed on the outer edge of the side of the turntable 12, and a dredging rod 10 is slidably sleeved inside the corresponding limiting sleeve 11, and the end of the first connecting rod 13 away from the turntable 12 is rotatably installed on the top of the dredging rod 10, a rotating shaft 14 is horizontally fixedly installed on the side of the turntable 12, and the end of the rotating shaft 14 passes through the connecting surface of the nozzle 6 and the shell 7, and a limiting plate 19 is vertically installed on the bottom of the shell 7, and a shaft 20 is horizontally rotatably installed on the side end of the limiting plate 19 near the rotating shaft 14, and the shaft 20 is rotatably connected to the opposite end of the rotating shaft 14, and a first gear 21 is fixedly sleeved on the end surface of the rotating shaft 14 near the shaft 20, and a first spring rod 27 is vertically installed on the top of the shell 7. The fixed end and the telescopic end of the spring rod 27 are connected by spline sliding. An L-shaped plate 36 is fixedly installed at the bottom of the telescopic end of the first spring rod 27. A slope 37 is provided on the horizontal side of the L-shaped plate 36. The vertical side of the L-shaped plate 36 is located between the adjacent teeth of the first gear 21. The surface of the shaft rod 20 is fixedly sleeved with a first fixed disk 23. The surface of the shaft rod 20 is sleeved with a torsion spring 22. The two ends of the torsion spring 22 are respectively fixedly installed on the opposite sides of the first fixed disk 23 and the first gear 21. Two ring-shaped and evenly distributed shifting rods 24 are fixed on the surface of the first fixed disk 23. The shifting rod 24 is L-shaped. When the horizontal side of the shifting rod 24 contacts the slope 37, the shifting rod 24 slides between the horizontal side and the slope 37. The surface of the shaft rod 20 is sleeved with a one-way bearing 26. The outer ring of the one-way bearing 26 is fixedly sleeved with a second gear 25. The second gear 25 is meshed with the toothed plate 16. Preferably, the movement of the connecting rod drives the two dredging rods 10 to move one upward and the other downward, so as to start the spray hole 8 in a non-working state, and the dredging rod 10 moving downward dredges the blocked spray hole 8.

[0023] Please see attached Figure 1 -Attached Figure 4 In a preferred embodiment, the feeding assembly includes: a material box 3, the material box 3 is installed on the top of the horizontal side of the U-shaped frame 2, a liquid pump is installed inside the material box 3, a multi-way pipe 4 connected to the liquid pump inside the material box 3 is installed at the bottom of the horizontal side of the U-shaped frame 2, multiple ends of the multi-way pipe 4 are installed on the top of the horizontal plate 5, and the multiple ends of the multi-way pipe 4 are respectively connected to multiple nozzles 6; Furthermore, the liquid pump is used to pump the paint in the material box 3 to the spray head 6 for spraying the photovoltaic solar back panel, and the multi-way pipe 4 facilitates the synchronous spraying of multiple spray heads 6.

[0024] The working principle of the present invention is as follows: first, the photovoltaic solar panel backboard is placed on the conveyor belt 1, and as the conveyor belt 1 works, the photovoltaic solar panel backboard is driven to pass under the horizontal plate 5, and at this time, the liquid pump is started to transfer the paint inside the material box 3 through the multi-way pipe 4 to the nozzle 6 for spraying, and then as the conveyor belt 1 moves, the photovoltaic solar panel backboard can be fully sprayed; When the nozzle 6 is spraying on the back plate of the photovoltaic solar panel, the paint will flow inside the nozzle 6, and the further flow of paint will drive the impeller 9 to rotate, and the rotation of the impeller 9 drives the rotating rod 15 to rotate, and the rotation of the rotating rod 15 drives the second fixed plate 28 to rotate, and the rotation of the second fixed plate 28 drives the first movable rod 29, the counterweight block 31 and the second movable rod 30 to rotate. Due to the effect of centrifugal force, the counterweight block 31 will also move in the direction away from the rotating rod 15 during rotation, and further move the sleeve disc 32 in the direction close to the second fixed plate 28. The movement of the sleeve disc 32 drives the extension plate 34 and the hinge rod 35 to move, and the movement of the hinge rod 35 drives the tooth plate 16 to move, and the movement of the tooth plate 16 drives the fixed plate 17 to move and makes the second spring rod 38 generate elastic force. In addition, the movement of the tooth plate 16 will also drive the second gear 25 to rotate forward. At this time, due to the setting of the one-way bearing 26, the forward rotation of the second gear 25 will not drive the shaft rod 20 to rotate through the one-way bearing 26; When the spray hole 8 in the working state is blocked, the flow rate of the paint inside the spray head 6 is reduced, and the rotation speed of the impeller 9 is further reduced. In summary, the rotation speed of the rotating rod 15 is reduced, and the centrifugal force on the counterweight block 31 becomes smaller, then the elastic force generated by the second spring rod 38 will cause the tooth plate 16 to move horizontally and reset, and the movement of the tooth plate 16 drives the second gear 25 to rotate in the opposite direction. At this time, the reverse rotation of the second gear 25 will drive the shaft rod 20 to rotate through the one-way bearing 26, and the rotation of the shaft rod 20 drives the first fixed plate 23 and the lever 24 to rotate and cause the torsion spring 22 to generate a torsion force. At this time, since the first gear 21 is limited by the L-shaped plate 36 and will not rotate, the situation that the two dredging rods 10 rotate at will is avoided. When the coating flow rate inside the nozzle 6 is reduced to a certain value, the rotation speed of the impeller 9 will further decrease, and the centrifugal force on the counterweight 31 will also decrease. The elastic force generated by the further second spring rod 38 will cause the tooth plate 16 to continue to move. In summary, the movement of the tooth plate 16 will drive the first fixed plate 23 and the lever 24 to rotate. When the lever 24 rotates and contacts the slope 37 and passes over the slope 37, the horizontal side of the lever 24 contacts the slope 37, which will cause the L-shaped plate 36 to move upward and cause the first spring rod 27 to generate an elastic force, which can further release the L-shaped plate 36 from limiting the first gear 21. The torsion force generated by the torsion spring 22 will cause the rotating shaft 14 to rotate 180 degrees. When the lever 24 passes over the L-shaped After the plate 36 is moved, the first spring rod 27 generates elastic force, which causes the L-shaped plate 36 to limit the first gear 21. The rotating shaft 14 rotates 180 degrees to drive the turntable 12 to rotate 180 degrees. The rotation of the turntable 12 drives the first connecting rod 13 to move. The movement of the connecting rod drives the two dredging rods 10 to move one upward and the other downward, so as to start the spray hole 8 in the non-working state, and the dredging rod 10 moving downward dredges the blocked spray hole 8, and further continues to spray the solar back panel, avoiding the situation where a large number of solar back panels with unqualified spraying are caused by continuous operation, or the need to stop the machine for cleaning and delay the spraying efficiency, thereby improving the use effect of the equipment.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A photovoltaic solar panel back sheet coating device, comprising a conveyor belt (1), characterized in that: Also includes: A U-shaped frame (2), wherein the U-shaped frame (2) is fixedly mounted on the top of the conveyor belt (1); A transverse plate (5), wherein the transverse plate (5) is fixedly installed horizontally between two vertical sides of the U-shaped frame (2); A nozzle (6), wherein there are a plurality of nozzles (6), and the plurality of nozzles (6) are evenly distributed in a straight line at the bottom of the horizontal plate (5), and each nozzle (6) has two spray holes (8) at the end thereof, and a shell (7) is fixedly mounted on the surface of each nozzle (6); A material supply assembly, the material supply assembly being arranged on the U-shaped frame (2), and the material supply assembly being used to supply material to the nozzle (6); A detection and cleaning component, wherein there are a plurality of the detection and cleaning components, and the plurality of the detection and cleaning components are respectively arranged inside a plurality of nozzles (6) and a shell (7), and the detection and cleaning component is used to detect the state of material flow inside the nozzle (6).

2. A photovoltaic solar panel back sheet coating device according to claim 1, characterized in that: The detection and cleaning assembly comprises: an impeller (9), the impeller (9) being rotatably mounted inside the nozzle (6), a rotating rod (15) being horizontally fixedly mounted on the side of the impeller (9), the end of the rotating rod (15) passing through the connecting surface between the nozzle (6) and the housing (7), a second fixed disk (28) being fixedly sleeved on the surface of the rotating rod (15), the second fixed disk (28) being located inside the housing (7), and a sleeve disk (32) being rotatably sleeved on the surface of the rotating rod (15).

3. A photovoltaic solar panel back sheet coating device according to claim 2, characterized in that: A plurality of first movable rods (29) are rotatably mounted on the side surface of the second fixed plate (28) close to the sleeve plate (32), a counterweight block (31) is rotatably mounted on the end of each first movable rod (29) away from the second fixed plate (28), a second movable rod (30) is rotatably mounted on the side surface corresponding to each counterweight block (31), and an arc block is rotatably mounted on the end of each second movable rod (30), an annular groove (33) is provided on the side surface of the sleeve plate (32) close to the second fixed plate (28), and the plurality of arc blocks are slidably mounted inside the annular groove (33).

4. A photovoltaic solar panel back sheet coating device according to claim 3, characterized in that: A slideway (18) is fixedly installed horizontally at the top of the housing (7), a toothed plate (16) is horizontally arranged below the slideway (18), a fixing plate (17) is fixedly installed vertically at the top of the toothed plate (16), the top of the fixing plate (17) is slidably installed inside the slideway (18), a second spring rod (38) is fixedly installed at the inner end of the slideway (18), and the telescopic end of the second spring rod (38) is fixedly installed on the side of the fixing plate (17).

5. The photovoltaic solar panel back sheet coating equipment according to claim 4, characterized in that: An extension plate (34) is fixedly mounted horizontally on the surface of the sleeve (32), a hinged rod (35) is hingedly connected to the side of the extension plate (34), and the other end of the hinged rod (35) is hingedly connected to the side of the tooth plate (16). Two symmetrically arranged limit sleeves (11) are fixedly mounted on the inner wall of the nozzle (6), and a dredging mechanism is arranged inside the nozzle (6) and the housing (7). There are two dredging mechanisms, which are arranged in parallel, and are used to dredge the blocked spray hole (8).

6. A photovoltaic solar panel back sheet coating device according to claim 5, characterized in that: The dredging mechanism comprises: a rotating disk (12), the rotating disk (12) being rotatably arranged inside the nozzle (6), a first connecting rod (13) being rotatably mounted on the outer edge of the side surface of the rotating disk (12), a dredging rod (10) being slidably sleeved inside the corresponding limiting sleeve (11), and an end of the first connecting rod (13) away from the rotating disk (12) being rotatably mounted on the top of the dredging rod (10).

7. A photovoltaic solar panel back sheet coating device according to claim 6, characterized in that: A rotating shaft (14) is fixedly mounted horizontally on the side of the rotating disk (12); the end of the rotating shaft (14) passes through the connection surface between the nozzle (6) and the housing (7); a limiting plate (19) is vertically mounted on the bottom of the housing (7); a shaft (20) is rotatably mounted horizontally on the end of the side of the limiting plate (19) close to the rotating shaft (14); the shaft (20) and the opposite ends of the rotating shaft (14) are rotatably connected; and a first gear (21) is fixedly sleeved on the end surface of the rotating shaft (14) close to the shaft (20).

8. The photovoltaic solar panel back sheet coating equipment according to claim 7, characterized in that: A first spring rod (27) is vertically mounted on the top of the housing (7); the fixed end and the telescopic end of the first spring rod (27) are slidably connected via a spline; an L-shaped plate (36) is fixedly mounted on the bottom of the telescopic end of the first spring rod (27); a slope (37) is provided on the horizontal side of the L-shaped plate (36); and a vertical side of the L-shaped plate (36) is located between adjacent teeth of the first gear (21).

9. The photovoltaic solar panel back sheet coating equipment according to claim 8, characterized in that: A first fixed plate (23) is fixedly sleeved on the surface of the shaft rod (20), a torsion spring (22) is sleeved on the surface of the shaft rod (20), two ends of the torsion spring (22) are respectively fixedly mounted on the first fixed plate (23) and the opposite surfaces of the first gear (21), two ring-shaped evenly distributed shifting rods (24) are fixed on the surface of the first fixed plate (23), the shifting rod (24) is L-shaped, and when the horizontal edge of the shifting rod (24) contacts the slope (37), the shifting rod (24) slides between the horizontal edge and the slope (37), a one-way bearing (26) is sleeved on the surface of the shaft rod (20), the outer ring of the one-way bearing (26) is fixedly sleeved with a second gear (25), and the second gear (25) is meshed with the toothed plate (16).

10. The photovoltaic solar panel back sheet coating equipment according to claim 9, characterized in that: The material supply assembly comprises: a material box (3), the material box (3) being mounted on the top of the horizontal side of the U-shaped frame (2), a liquid pump being mounted inside the material box (3), a multi-way pipe (4) being mounted on the bottom of the horizontal side of the U-shaped frame (2) and connected to the liquid pump inside the material box (3), multiple ends of the multi-way pipe (4) being mounted on the top of the horizontal plate (5), and multiple ends of the multi-way pipe (4) being respectively connected to multiple nozzles (6).

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