A photovoltaic panel self-cleaning coating production line and coating process

Abstract

The present invention belongs to the technical field of photovoltaic panel coating equipment, and discloses a photovoltaic panel self-cleaning coating production line, including an operating table and a coating mechanism. Both sides of the top of the operating table are slidably connected to the coating mechanism through slide rails, and the coating mechanism drives a roller to roll the back of the photovoltaic panel. During the rolling process of the roller, excess liquid glue at the bottom of the back panel film overflows to both sides, and the overflowed liquid glue passes through the inclined surface of the aggregate trough to reach the middle glue groove, and then the coating mechanism moves to make the bottom of the shoveling member push the remaining glue in the glue groove at the bottom of the aggregate trough to the glue hole on the front side of the operating table, and then the remaining material flows through the glue hole to the inside of the collecting mechanism for recovery, effectively reducing the waste of excess glue. In order to prevent the colloid from solidifying when the shoveling member pushes the remaining material, water is further injected into the shoveling member and then the surface of the shoveling member is heated by the electric heating wire to generate heat, effectively solving the problem of colloid solidification when the shoveling member pushes the remaining material.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic panel coating equipment, and in particular relates to a photovoltaic panel self-cleaning coating production line and a coating process. Background Art

[0002] The coating process is a process of spraying liquid on the substrate. In the traditional photovoltaic panel coating process, liquid glue is sprayed on the back of the photovoltaic panel, and then the back panel film is attached to the surface of the photovoltaic back panel to protect and increase the service life. However, in the traditional large-scale photovoltaic back panel coating process, before the photovoltaic panels are coated in a small dusty workshop, dust will adhere to the surface of the photovoltaic panels, causing the dust and liquid glue to mix. After the photovoltaic back panel is coated, the glue mixed with more dust will have insufficient adhesion, resulting in insufficient adhesion between the photovoltaic back panel and the back panel film in some places, which will accelerate the demoulding time and reduce the service life;

[0003] Therefore, with the development of the times, a photovoltaic panel self-cleaning coating production line has emerged. It is a device that absorbs and cleans the dust on the surface of the photovoltaic back before coating. It is also to reduce the dust on the surface of the photovoltaic back panel before coating. It is mainly composed of an operating table, a main control device on one side of the operating table, a coating mechanism on the top of the operating table, and a dust suction device on the top side of the coating mechanism. It is widely used in the photovoltaic panel industry.

[0004] The existing photovoltaic panel self-cleaning coating production line is that the staff passes the photovoltaic panel surface through a vacuum device to absorb the photovoltaic panel surface, and then the staff applies liquid glue to the photovoltaic back surface, and then places the back film on the back of the photovoltaic panel with liquid glue, and then the laminating mechanism drives the laminating wheel to roll on the photovoltaic back surface, and the back film and the photovoltaic back are compacted and bonded by the liquid glue.

[0005] During the use of the existing photovoltaic panel self-cleaning coating production line, the staff cannot control the amount of glue when spraying liquid glue on the back surface of the photovoltaic panel. Therefore, when the laminating wheel is rolling on the surface of the bare backboard, the excess glue between the backboard film and the backboard will overflow to both sides, causing a waste of liquid glue material. The liquid glue has viscosity and overflows from both sides of the photovoltaic panel to the surface of the operating table. It will solidify for a long time, which will be difficult to clean and affect the appearance of the operating table. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In order to solve the problems raised in the above-mentioned background technology, the present invention provides a photovoltaic panel self-cleaning coating production line and coating process, which has a coating mechanism that drives a roller to roll the back of the photovoltaic panel. During the rolling process of the roller, the excess liquid glue at the bottom of the back panel film overflows to both sides, and the overflowed liquid glue passes through the inclined surface of the aggregate trough to reach the middle glue groove, and then the coating mechanism moves to make the bottom of the shoveling member push the remaining glue in the glue groove at the bottom of the aggregate trough to the glue hole on the front side of the operating table, and then the remaining material flows through the glue hole to the inside of the collecting mechanism for recovery, effectively reducing the waste of excess glue. In order to prevent the colloid from solidifying when the shoveling member pushes the remaining material, water is further injected into the shoveling member and then the surface of the shoveling member is heated by the electric heating wire to generate heat, which effectively solves the problem of colloid solidification when the shoveling member pushes the remaining material.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a photovoltaic panel self-cleaning coating production line and coating process, comprising an operating table and a coating mechanism, characterized in that: both sides of the top of the operating table are slidably connected to the coating mechanism through slide rails, one side of the coating mechanism is fixedly connected to a dust suction mechanism, the top of the dust suction mechanism is movably connected to the dust suction device through a pipeline, one side of the operating table is signal-connected to a main control machine, the front of the operating table is slidably connected to a collecting mechanism, both sides of the back of the coating mechanism are fixedly connected to pull rods, one side of the pull rod is connected to a cutting piece by a rotating shaft, both sides of the top of the operating table are provided with aggregate troughs, the aggregate troughs are inverted triangles, one side of the top of the two aggregate troughs is provided with a cutting piece, and both sides of the bottom of the coating mechanism are provided with shoveling pieces, and the bottoms of the two shoveling pieces are adaptively coupled to the top of the aggregate troughs.

[0010] In the above technical solution, preferably, the coating mechanism includes a moving frame, a roller member, a shoveling member, a first water pipe and a hanging rod member;

[0011] Two hanging rods are fixedly connected on both sides of the top of the movable frame, and the bottoms of the two hanging rods are fixedly connected to the first water pipe through circular rings. A roller member is connected to the rotating shaft between the two hanging rods, and spacer ring sets are movably clamped on both sides of the roller member. The inner wall of the spacer ring set is sleeved on the surface of the first water pipe, and the bottoms of both sides of the first water pipe extend into the interior of the shoveling member. The interior of the shoveling member is connected to an electric heating wire, and the top of one side of the first water pipe is fixedly connected to a water inlet.

[0012] In the above technical solution, preferably, it also includes an inner cylinder, the inner wall of the roller member is fixedly connected to the inner cylinder through a round rod, a chamber is provided between the roller member and the inner cylinder, saltpeter is placed in the chamber between the roller member and the inner cylinder, and a strip notch is provided on the outer side of the inner cylinder;

[0013] When the water inside the inner cylinder flows through the grooves to the inner wall chamber of the roller, the water will react chemically with the saltpeter in the chamber, causing the water temperature to drop again. At the same time, the surface of the roller will be cooled to quickly condense and stick the liquid glue.

[0014] In the above technical solution, preferably, the bottom of one side of the water injection port extends into the interior of the first water pipe, the bottom of the water injection port is fixedly connected to the second water pipe, one side of the second water pipe is extended from the bottom of the first water pipe, and the bottom extended end of the second water pipe is fixedly connected to the telescopic blocking assembly.

[0015] In the above technical solution, preferably, a water outlet hole is provided at the bottom of the first water pipe corresponding to the top of the telescopic blocking assembly.

[0016] In the above technical solution, preferably, the telescopic blocking assembly includes a bottom rod, a top rod, and a first return spring;

[0017] The top inner wall of the bottom rod is annularly fixedly connected to the first return spring, the bottom of the first return spring is fixedly connected to the top rod, the top of the top rod movably extends out of the bottom rod, the top rod and the inner top wall of the bottom rod are elastically connected via the first return spring, and one side of the bottom of the second water pipe penetrates the inner wall of the bottom rod and is located below the top rod.

[0018] In the above technical solution, preferably, the top rod comprises a sealing disk and a water-blocking top rod fixedly mounted on the sealing disk, the top end of the water-blocking top rod passes through the top of the bottom rod, the first return spring is installed between the top of the sealing disk and the inner top wall of the bottom rod, a water-filled space is formed between the sealing disk and the inner bottom wall of the bottom rod, and the second water pipe passes through the bottom rod and is located in the water-filled space;

[0019] The second water pipe injects water into the bottom space of the top rod, which causes the water pressure to push up the top rod to block the water outlet, thereby preventing the water heated by the shoveling member in the first water pipe from flowing into the inner cylinder.

[0020] In the above technical solution, preferably, a glue leakage hole is opened on one side of the collecting trough, and the collecting mechanism includes a collecting frame, an inner collecting frame, and a second return spring;

[0021] The inner bottom of the material collection frame is fixedly connected to the second return spring, and the top of the second return spring is movably connected to the material collection inner frame. The outer surface of the material collection inner frame is attached to the inner wall of the material collection frame, and the top of the material collection frame is located at the bottom of the glue leakage hole on one side of the material collection trough.

[0022] The present invention also provides a coating process for a photovoltaic panel self-cleaning coating production line, comprising the following steps:

[0023] S1, when the roller rolls on the back of the photovoltaic panel, water is first injected into the first water pipe through the water injection port, so that the water flows through the first water pipe to fill the inside of the shoveling member, and then the water is heated by the electric heating wire to heat the surface of the shoveling member;

[0024] S2, operate the main control machine to start the laminating mechanism to move forward along the guide rail, and at the same time drive the shoveling member inside the aggregate trough to move together with the laminating mechanism;

[0025] S3, the laminating mechanism moves to the back of the photovoltaic panel so that the rollers compact the back of the photovoltaic panel and the remaining glue overflows from both sides of the photovoltaic panel to the inside of the aggregate trough. Then, the shoveling members with heat on the surface shovel the remaining glue in the aggregate trough to the glue leakage hole and collect it inside the collecting mechanism.

[0026] (III) Beneficial effects

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The film coating mechanism drives the roller to roll the back of the photovoltaic panel. During the rolling process of the roller, the excess liquid glue at the bottom of the back panel film overflows to both sides. The overflowed liquid glue passes through the inclined surface of the collecting trough to the middle glue trough. Then, the film coating mechanism moves, so that the bottom of the shoveling member pushes the remaining glue in the glue trough at the bottom of the collecting trough to the glue hole on the front of the operating table. Then, the remaining material flows through the glue hole to the inside of the collecting mechanism for recycling, effectively reducing the waste of excess glue. In order to prevent the colloid from solidifying when the shoveling member pushes the remaining material, water is further injected into the shoveling member and then the surface of the shoveling member is heated by the electric heating wire to generate heat, effectively solving the problem of colloid solidification when the shoveling member pushes the remaining material.

[0029] When the roller member rolls on the back of the photovoltaic panel, water is injected into the first water pipe through the water injection port, so that water flows into the inner cylinder through the water outlet at the bottom of the first water pipe and fills it. At this time, part of the water inside the inner cylinder will flow from the groove to the roller member and the inner cylinder to produce a chemical reaction with the saltpeter, so that the inner wall temperature of the roller member is very low. When the roller member rolls on the back of the photovoltaic panel, the liquid glue is quickly condensed to quickly bond the backlight film to the back of the photovoltaic panel, thereby improving the working efficiency of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the back side of the laminating mechanism of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the laminating mechanism of the present invention;

[0033] Figure 4 It is a cross-sectional schematic diagram of a roller member of the present invention;

[0034] Figure 5 It is a cross-sectional schematic diagram of the shoveling member of the present invention;

[0035] Figure 6 is a cross-sectional schematic diagram of a first water pipe of the present invention;

[0036] Figure 7 This is a schematic diagram of the water outlet of the present invention;

[0037] Figure 8 It is a cross-sectional schematic diagram of the telescopic plugging assembly of the present invention;

[0038] Fig. 9 It is a schematic diagram of the aggregate trough of the present invention;

[0039] Fig.10 It is a schematic diagram of the collection mechanism of the present invention;

[0040] Fig.11 It is a schematic cross-sectional view of the aggregate frame of the present invention.

[0041] In the figure: 1. operating table; 101. aggregate trough; 2. laminating mechanism; 201. moving frame; 202. roller member; 2021. inner cylinder; 203. shoveling member; 2031. heating wire; 204. first water pipe; 2041. water inlet; 2042. water outlet; 205. suspension rod member; 3. dust suction mechanism; 4. main control machine; 5. collecting mechanism; 501. aggregate frame; 502. aggregate inner frame; 503. second return spring; 6. pull rod member; 7. cutting member; 8. saltpeter; 9. spacer ring kit; 10. second water pipe; 11. telescopic plugging assembly; 111. bottom rod member; 112. top rod member; 113. first return spring; 12. slot. DETAILED DESCRIPTION

[0042] 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.

[0043] like Figures 1 to 3As shown, the present invention provides a photovoltaic panel self-cleaning coating production line and coating process, including an operating table 1 and a coating mechanism 2, characterized in that: both sides of the top of the operating table 1 are slidably connected to the coating mechanism 2 through slide rails, one side of the coating mechanism 2 is fixedly connected with a dust suction mechanism 3, the top of the dust suction mechanism 3 is movably connected to the dust suction device through a pipeline, one side of the operating table 1 is connected to a main control machine 4 by signal, the front of the operating table 1 is slidably connected with a collecting mechanism 5, both sides of the back of the coating mechanism 2 are fixedly connected with a pull rod 6, one side of the pull rod 6 is connected with a cutting member 7, both sides of the top of the operating table 1 are provided with a collection trough 101, the collection trough 101 is inverted triangle shape, one side of the top of the two collection troughs 101 is provided with a cutting member 7, and both sides of the bottom of the coating mechanism 2 are provided with shovel members 203, and the bottom of the two shovel members 203 is adaptively coupled with the top of the collection trough 101.

[0044] During use, the staff places the photovoltaic panel on the top of the operating table 1, and then the staff controls the main control machine 4 to advance the coating mechanism 2 forward along the slide rail, driving the dust suction mechanism 3 to absorb the dust on the surface of the photovoltaic panel first, and then sprays liquid glue on the back of the cleaned photovoltaic panel, and then attaches the back panel film, and finally the coating mechanism 2 is moved forward along the slide rail. At this time, the coating mechanism 2 drives the moving frame 201 to roll the back of the photovoltaic panel. While the coating mechanism 2 drives the moving frame 201 to roll, the bottom of the shoveling piece 203 will push the remaining glue in the glue groove at the bottom of the collecting groove 101 to the glue hole on the front side of the operating table 1, and then the remaining material flows through the glue hole to the inside of the collecting mechanism 5 for recovery, effectively reducing the waste of excess glue.

[0045] It is further explained that when the movable frame 201 rolls on the back of the photovoltaic panel, the residual material overflows to both sides, and then the laminating mechanism 2 continues to push forward, so that the cutting piece 7 cuts the residual rubber edges on both sides of the photovoltaic panel and flows into the collecting trough 101 for collection, so as to prevent residual rubber from remaining on both sides of the back edge of the photovoltaic panel.

[0046] like Figures 3 to 7 As shown, the film coating mechanism 2 includes a moving frame 201, a roller member 202, a shoveling member 203, a first water pipe 204 and a suspension rod member 205;

[0047] Two hanging rods 205 are fixedly connected through both sides of the top of the mobile frame 201, and the bottoms of the two hanging rods 205 are fixedly connected to the first water pipe 204 through a circular ring. The roller member 202 is connected to the rotating shaft between the two hanging rods 205. The spacer ring set 9 is movably clamped on both sides of the roller member 202. The inner wall of the spacer ring set 9 is sleeved on the surface of the first water pipe 204. The bottoms of both sides of the first water pipe 204 extend into the shoveling member 203. The inside of the shoveling member 203 is connected to the electric heating wire 2031. The top of one side of the first water pipe 204 is fixedly connected to the water injection port 2041.

[0048] It also includes an inner cylinder 2021, the inner wall of the roller member 202 is fixedly connected to the inner cylinder 2021 through a round rod, a chamber is provided between the roller member 202 and the inner cylinder 2021, saltpeter 8 is placed in the chamber between the roller member 202 and the inner cylinder 2021, and a strip notch 12 is provided on the outer side of the inner cylinder 2021;

[0049] When the water in the inner cylinder 2021 flows through the slot 12 to the inner wall chamber of the roller 202, the water reacts chemically with the saltpeter 8 in the chamber, causing the water temperature to drop again. At the same time, the surface of the roller 202 is cooled to quickly condense and stick the liquid glue.

[0050] The bottom of one side of the water injection port 2041 extends into the interior of the first water pipe 204, and the bottom of the water injection port 2041 is fixedly connected to the second water pipe 10, one side of the second water pipe 10 extends out from the bottom of the first water pipe 204, and the bottom extended end of the second water pipe 10 is fixedly connected to the telescopic plugging component 11;

[0051] When in use, when the roller 202 rolls against the back of the photovoltaic panel, water is injected into the first water pipe 204 through the water injection port 2041, so that the water flows through the water outlet 2042 at the bottom of the first water pipe 204 and flows into the inner cylinder 2021 to fill it up. At this time, part of the water inside the inner cylinder 2021 will flow from the slot 12 to the space between the roller 202 and the inner cylinder 2021 to produce a chemical reaction with the saltpeter 8, so that the inner wall temperature of the roller 202 is very low, and when the roller 202 rolls against the back of the photovoltaic panel, the liquid glue is quickly condensed to quickly bond the backlight film to the back of the photovoltaic panel, thereby improving the working efficiency of the film coating;

[0052] At the same time, in order to prevent the colloid from solidifying when the shovel piece 203 pushes the remaining material, water is further injected into the shovel piece 203 and then the surface of the shovel piece 203 is heated by the heating wire 2031, which effectively solves the problem of colloid solidification when the shovel piece 203 pushes the remaining material.

[0053] like Figures 7 to 8 As shown, a water outlet 2042 is provided at the bottom of the first water pipe 204 corresponding to the top of the telescopic plugging assembly 11, and the telescopic plugging assembly 11 includes a bottom rod 111, a top rod 112, and a first return spring 113;

[0054] The top inner wall of the bottom rod 111 is annularly fixedly connected to the first return spring 113, the bottom of the first return spring 113 is fixedly connected to the top rod 112, the top of the top rod 112 movably extends out of the bottom rod 111, the top rod 112 and the top inner wall of the bottom rod 111 are elastically connected via the first return spring 113, and one side of the bottom of the second water pipe 10 penetrates the inner wall of the bottom rod 111 and is located below the top rod 112;

[0055] The top rod 112 includes a sealing disk and a water blocking top rod fixedly mounted on the sealing disk. The top end of the water blocking top rod passes through the top of the bottom rod 111. The first return spring 113 is installed between the top of the sealing disk and the inner top wall of the bottom rod 111. A water-filled space is formed between the sealing disk and the inner bottom wall of the bottom rod 111. The second water pipe 10 passes through the bottom rod 111 and is located in the water-filled space.

[0056] The second water pipe 10 injects water into the bottom space of the top rod 112, which causes the water pressure to push up the top rod 112 to block the water outlet 2042, thereby preventing the water heated by the shoveling member 203 in the first water pipe 204 from flowing into the inner cylinder 2021;

[0057] During use, when water is injected into the water injection port 2041, a portion of the water from the water injection port 2041 is transmitted to the second water pipe 10 to reach the bottom chamber of the bottom rod 111, and then the water pressure in the bottom chamber of the bottom rod 111 pushes up the top rod 112 to seal the water outlet 2042 at the bottom of the first water pipe 204, effectively preventing the heated water inside the shoveling member 203 from conducting heat to the cold water inside the first water pipe 204, and then flowing to the inside of the inner cylinder 2021 to heat the cold water inside the inner cylinder 2021.

[0058] Specifically, the water injected into the first water pipe 204 is cold water at room temperature.

[0059] like Figures 9 to 11 As shown, a glue leakage hole is opened on one side of the collecting trough 101, and the collecting mechanism 5 includes a collecting frame 501, an inner collecting frame 502, and a second return spring 503;

[0060] The inner bottom of the aggregate frame 501 is fixedly connected to the second return spring 503, and the top of the second return spring 503 is movably connected to the aggregate inner frame 502. The outer surface of the aggregate inner frame 502 is attached to the inner wall of the aggregate frame 501, and the top of the aggregate frame 501 is located at the bottom of the glue leakage hole on one side of the aggregate trough 101.

[0061] When in use, the shovel member 203 pushes the remaining material along the inner wall of the aggregate trough 101 to the glue leakage hole, and the remaining material passes through the glue leakage hole and stays inside the aggregate inner frame 502 to wait for natural shaping. Then the collecting mechanism 5 is pulled out by the worker, and the aggregate frame 501 is taken out to take out the solidified remaining material inside and continue to use it. At the same time, it also makes the collecting mechanism 5 free of remaining material and can be recycled and used continuously.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic panel self-cleaning coating production line, comprising an operating table (1) and a coating mechanism (2), characterized in that: Both sides of the top of the operating table (1) are slidably connected to the coating mechanism (2) via slide rails; one side of the coating mechanism (2) is fixedly connected to a dust suction mechanism (3); the top of the dust suction mechanism (3) is movably connected to the dust suction device via a pipeline; one side of the operating table (1) is signal-connected to a main control machine (4); the front side of the operating table (1) is slidably connected to a collecting mechanism (5); both sides of the back side of the coating mechanism (2) are fixedly connected to pull rods (6); a rotating shaft on one side of the pull rod (6) is connected to a cutting member (7); Both sides of the top of the operating table (1) are provided with material collecting troughs (101), one side of the top of the two material collecting troughs (101) is provided with a cutting piece (7), and both sides of the bottom of the coating mechanism (2) are provided with shoveling pieces (203), and the bottoms of the two shoveling pieces (203) are adaptively coupled with the tops of the material collecting troughs (101); the coating mechanism (2) comprises a moving frame (201), a roller member (202), a shoveling piece (203), a first water pipe (204) and a suspension rod member (205); Two suspension rods (205) are fixedly connected through both sides of the top of the mobile frame (201); the bottoms of the two suspension rods (205) are fixedly connected to the first water pipe (204) via a circular ring; a roller member (202) is rotatably connected between the two suspension rods (205); a spacer ring set (9) is movably engaged on both sides of the roller member (202); the inner wall of the spacer ring set (9) is sleeved on the surface of the first water pipe (204); the bottoms of both sides of the first water pipe (204) extend into the interior of the shoveling member (203); the interior of the shoveling member (203) is connected to an electric heating wire (2031); and the top of one side of the first water pipe (204) is fixedly connected to a water injection port (2041); the roller member (202) further comprises an inner cylinder (221); the inner wall of the roller member (202) The inner cylinder (2021) is fixedly connected via a round rod, a chamber is provided between the roller member (202) and the inner cylinder (2021), saltpeter (8) is placed in the chamber between the roller member (202) and the inner cylinder (2021), and a slot (12) is provided on the outer side of the inner cylinder (2021); the bottom of one side of the water injection port (2041) extends into the interior of the first water pipe (204), the bottom of the water injection port (2041) is fixedly connected to a second water pipe (10), one side of the second water pipe (10) extends out from the bottom of the first water pipe (204), and the bottom protruding end of the second water pipe (10) is fixedly connected to a telescopic plugging assembly (11); the telescopic plugging assembly (11) comprises a bottom rod (111), a top rod (112), and a first return spring (113); The top inner wall of the bottom rod (111) is annularly fixedly connected to a first return spring (113); the bottom of the first return spring (113) is fixedly connected to a top rod (112); the top of the top rod (112) movably extends out of the bottom rod (111); the top rod (112) and the top inner wall of the bottom rod (111) are elastically connected via the first return spring (113); one side of the bottom of the second water pipe (10) passes through the inner wall of the bottom rod (111) and is located below the top rod (112); a water outlet (2042) is provided at the bottom of the first water pipe (204) corresponding to the top of the telescopic plugging assembly (11); water flows through the water outlet 2042 at the bottom of the first water pipe 204 The water flows into the inner cylinder 2021; the second water pipe 10 injects water into the bottom space of the top rod 112, which causes the water pressure to push up the top rod 112 to block the water outlet 2042, thereby preventing the water in the first water pipe 204 heated by the shoveling member 203 from flowing into the inner cylinder 2021; the top rod (112) comprises a sealing disk and a water-blocking top rod fixedly mounted on the sealing disk, the top end of the water-blocking top rod passes through the top of the bottom rod (111), the first return spring (113) is mounted between the top of the sealing disk and the inner top wall of the bottom rod (111), a water-filled space is formed between the sealing disk and the inner bottom wall of the bottom rod (111), and the second water pipe (10) passes through the bottom rod (111) and is located in its water-filled space.

2. A photovoltaic panel self-cleaning coating production line according to claim 1, characterized in that: A glue leakage hole is provided on one side of the material collecting trough (101), and the collecting mechanism (5) comprises a material collecting frame (501), a material collecting inner frame (502), and a second return spring (503); The inner bottom of the material collection frame (501) is fixedly connected to a second return spring (503), and the top of the second return spring (503) is movably connected to an inner material collection frame (502). The outer surface of the inner material collection frame (502) is attached to the inner wall of the material collection frame (501), and the top of the material collection frame (501) is located at the bottom of the glue leakage hole on one side of the material collection trough (101).

3. A coating process using the photovoltaic panel self-cleaning coating production line according to any one of claims 1 to 2, characterized in that: The following steps are included: S1, when the roller member (202) rolls on the back of the photovoltaic panel, water is first injected into the first water pipe (204) through the water injection port (2041), so that the water flows through the first water pipe (204) to fill the inside of the shoveling member (203), and then the water is heated by the electric heating wire (2031) to heat the surface of the shoveling member (203); S2, then operating the main control machine (4) to start the laminating mechanism (2) to move forward along the guide rail, and at the same time as the laminating mechanism (2) moves forward, the shoveling member (203) located inside the material collecting trough (101) is driven to move together; S3, the laminating mechanism (2) moves to the back side of the photovoltaic panel so that the roller member (202) compacts the back side of the photovoltaic panel, causing the residual glue to overflow from both sides of the photovoltaic panel and flow into the collecting trough (101). Subsequently, the shoveling member (203) with heat on its surface simultaneously shovels the residual glue inside the collecting trough (101) to the glue leakage hole and reaches the collecting mechanism (5) for collection.

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