A heavy-duty anti-corrosion and high-weather-resistant material and coating process for photovoltaic accessories

Abstract

The invention discloses a heavy-duty anticorrosive and highly weather-resistant material and a coating process for photovoltaic accessories. The material comprises the following components: a high acrylonitrile SAN content of 30-50%, a maleic anhydride styrene copolymer or a maleic anhydride grafted SAN content of 1-20%, an ASA rubber powder content of 20-40%, a pentaerythritol ester lubricant content of 1-4%, a hindered phenol antioxidant content of 1-4%, a phosphite antioxidant content of 1-4%, a benzotriazole ultraviolet light absorber content of 1-4%, and a hindered amine light stabilizer content of 1-4%. , high weather-resistant pigment content of 1‑4%, flexible acrylate or flexible polyurethane, the high acrylonitrile SAN, maleic anhydride styrene copolymer or maleic anhydride grafted SAN, ASA rubber powder, pentaerythritol ester lubricant, hindered phenol antioxidant, phosphite antioxidant, benzotriazole ultraviolet light absorber, hindered amine light stabilizer and high weather-resistant pigment are mixed, extruded and granulated to obtain modified ASA material. Through the use of process and materials, the durability and corrosion resistance are good, and the skeleton remains stable in high cold and high heat environments.

Description

Technical Field

[0001] The invention relates to the technical field of polymer compound materials, and in particular to a heavy-duty anti-corrosion and high-weather-resistant material and a coating process for photovoltaic accessories. Background Art

[0002] The photovoltaic bracket industry currently generally adopts a metal + anti-corrosion coating structure. Because the coating process and system have determined that the coating will inevitably have holes and pinholes, it is impossible to ensure that external factors (oxygen, acid, alkali, salt, etc.) act on the metal structure through the pinhole holes, causing the bracket body to rust and decompose. There are also emerging brackets made of glass fiber reinforced extrusion or injection molding materials such as PVC, PP and PE. Olefins have unsaturated bonds and are easy to decompose under the action of ultraviolet rays. The performance loss is very fast. In addition, due to the strength requirements of the bracket, a larger thickness must be used to match the complex support structure, which requires large mold investment, high manufacturing costs, and high material consumption;

[0003] ASA (acrylonitrile-styrene-acrylate copolymer) has been used outdoors for more than 20 years and has extremely excellent resistance to UV rays, heat and oxygen, and acid, alkali and salt. It has been widely used in the field of building materials roofs and walls. However, applying it to photovoltaic brackets to improve its corrosion resistance and weather resistance is a technical problem that needs to be solved in current technology.

[0004] In response to the above problems, it is urgently necessary to carry out innovative designs based on the original photovoltaic accessories protective materials. Summary of the invention

[0005] The purpose of the present invention is to provide a heavy-duty anti-corrosion and high-weather-resistant material and coating process for photovoltaic accessories, so as to solve the problems of the existing photovoltaic accessories protective materials proposed in the above background technology, that the corrosion resistance and weather resistance are not high, and at the same time, the mold investment is large, the manufacturing cost is high, and the material consumption is large. The technical solution of the present invention is aimed at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a heavy-duty anti-corrosion and high-weather-resistant material and coating process for photovoltaic accessories, the material comprising the following components: 30-50% high acrylonitrile SAN content, 1-20% maleic anhydride styrene copolymer or maleic anhydride grafted SAN content, 20-40% ASA rubber powder content, 1-4% pentaerythritol ester lubricant content, 1-4% hindered phenol antioxidant content, 1-4% phosphite antioxidant content, 1-4% benzotriazole ultraviolet light absorber content. %, hindered amine light stabilizer content of 1-4%, high weather resistant pigment content of 1-4%, flexible acrylate or flexible polyurethane, the high acrylonitrile SAN, maleic anhydride styrene copolymer or maleic anhydride grafted SAN, ASA rubber powder, pentaerythritol ester lubricant, hindered phenol antioxidant, phosphite antioxidant, benzotriazole ultraviolet light absorber, hindered amine light stabilizer and high weather resistant pigment are mixed, extruded and granulated to obtain a modified ASA material, and the flexible acrylate or flexible polyurethane is used as an intermediate layer.

[0007] Preferably, the coating process comprises the following steps:

[0008] S1: Select angle iron, send it to the rust removal equipment for surface rust removal, then degrease and clean it, and then send it to the preheating oven for drying and preheating, and the preheating temperature is controlled at 80-100℃;

[0009] S2: The angle iron after drying and preheating is sent to the first co-extrusion die. The temperature of the co-extrusion die is controlled at 160-180°C. It is coated with flexible acrylic or flexible polyurethane material with a thickness of 0.1mm, and then cooled and shaped. The temperature is lower than 80°C.

[0010] S3: The angle iron after shaping and cooling is sent to the preheating drying tunnel, heated to 100-120°C, and then enters the second co-extrusion die. The temperature of the co-extrusion die is controlled at 180-200°C, and the modified ASA material is coated with a thickness of 0.2mm. Then it is cooled and shaped, cut, and coated with acrylic adhesive on the cut surface after cutting.

[0011] Preferably, the rust removal device comprises a box body, three first mounting frames are installed at equal intervals in the box body, and guide wheels are arranged in the first mounting frames, and a second mounting frame is arranged between two adjacent first mounting frames, and rust removal wheels are installed in the second mounting frames, and the rust removal wheels in the two second mounting frames are arranged perpendicular to each other;

[0012] It also includes a third mounting frame, which is fixed inside one end of the feeding box, and a hydraulic cylinder is embedded in the cavity on the rear side of the third mounting frame, and the output end of the hydraulic cylinder is connected to a mounting seat through a rod, and an electric push rod and an elastic telescopic rod are respectively fixed at the left and right positions of the rear side of the mounting seat, and the rear ends of the electric push rod and the elastic telescopic rod are fixed with mounting plates, and a misalignment conduction component is arranged between the two mounting plates, and the misalignment conduction component is used to drive the two mounting plates to move towards each other, and a mounting column is rotatably arranged at the rear end raised position of the mounting plate, and the mounting A rust removal head is fixed to the outside of the column, a one-way shifting assembly is arranged between the interior of the mounting plate and the mounting seat, and the one-way shifting assembly is used to drive the mounting column to rotate in one direction, a mounting rod is connected to the internal cavity at the bottom protrusion of the mounting plate through a spring, and a cleaning seat is fixed to the rear end of the mounting rod, and the cleaning seat is located below the mounting column, a lifting assembly is arranged between the bottom of the mounting rod and the rear side of the third mounting frame, and the lifting assembly is used to lift the mounting rod, a cleaning assembly is arranged between the interior of the cleaning seat and the lifting assembly, and the cleaning assembly is used to clean the rust removal head.

[0013] Preferably, the offset conduction assembly includes a first conduction rack and a first conduction rack, and the first conduction rack and the first conduction rack are respectively fixed at the front edges of the two mounting plates, a gear is meshed between the first conduction rack and the first conduction rack, and the gear is installed in the middle of the rear side of the mounting seat.

[0014] Preferably, the cross-section of the rust removal head is designed to be a triangular structure, and the rust removal heads are distributed at equal angles on the mounting column.

[0015] Preferably, the one-way shifting assembly includes a toothed roller, which is embedded and rotatably installed in the mounting plate, and is connected to the mounting column through a belt transmission. A toothed plate is arranged on the top of the toothed roller, and the toothed plate is fixed on the rear side of the mounting seat, and the toothed plate is slidably arranged in the internal cavity of the mounting plate. A retractable groove is provided at the bottom of the toothed plate, and a tooth block is rotatably installed in the retractable groove through a torsion spring.

[0016] Preferably, the tooth block rotates unidirectionally in the receiving and releasing groove, and the receiving and releasing grooves are distributed at equal intervals at the bottom of the tooth plate, and the tooth block is meshed with the tooth roller.

[0017] Preferably, the lifting assembly includes a base plate, which is fixed to the bottom of the rear side of the third mounting frame, and a guide plate is fixed on the base plate, the guide plate is located on the movable track of the protrusion, and the protrusion is fixed to the bottom of the mounting rod, the protrusion is designed as a hemispherical structure, and the rear side of the guide plate is designed as a slope structure.

[0018] Preferably, the cleaning assembly includes a toothed disc, which is embedded in the bottom of the cleaning seat, and a cleaning rack is provided on the movable track of the toothed disc and the cleaning rack is fixed to the bottom plate, a connecting rod is sleeved on the eccentric protrusion on the rear side of the toothed disc, and a push strip is rotatably installed on the top of the connecting rod, and a cleaning plate is fixed on the top of the push strip, the cleaning plate is embedded and fits and slides inside the cleaning seat, and a docking groove is provided on the top of the cleaning plate, and the docking groove is opened on the top of the cleaning seat, an air pipe is connected to the side wall of the internal cavity of the cleaning seat, and the air pipe corresponds to the position of the cleaning plate, and the air pipe is connected to an external air pump, and the push strip drives the cleaning plate to slide back and forth vertically in the cleaning seat through the rotation of the toothed disc and the connecting rod, and the cross-sectional shape of the docking groove is adapted to the cross-sectional shape of the rust removal head.

[0019] Preferably, the acrylonitrile content in the high acrylonitrile SAN is ≥30%, the hardness of the flexible acrylic ester is 50-70A, and the flexible polyurethane is polyester flexible polyurethane.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention utilizes the high weather resistance of the modified ASA material, cooperates with the strength of the metal material, and takes into account the irreversible relative displacement between the high and low temperature polymer material and the metal material caused by the different expansion coefficients. A flexible acrylic ester or a flexible polyurethane material is added as an intermediate elastic layer. The flexible acrylic ester material contains a lot of oxygen atoms and is suitable for forming a coating on the surface of the metal in the form of a covalent bond. This structure takes into account strength, weather resistance and anti-corrosion effects, is lightweight and will not have chemical corrosion, biological corrosion and electrochemical corrosion, etc., and also prevents the risk of condensation accumulation on the metal surface due to temperature changes. The introduced elastic layer can also reduce the influence of environmental vibration and jitter on the dimensional stability of the frame;

[0022] The present invention, in addition to using two sets of mutually perpendicular rust removal wheels to remove rust from multiple surfaces of the diagonal iron, also provides a rust removal head with a triangular structure, and uses the rust removal head to rub the internal dead corner of the diagonal iron back and forth at high speed to remove rust, thereby providing a basis for subsequent complete coating. During this process, the two mounting columns move alternately to perform alternate rust removal, thereby preventing rust from accumulating on the rust removal head and affecting the continuous rust removal effect. The non-working rust removal head rotates and transposes during the contraction process, and the transposed rust removal head is cleaned by the cleaning plate in the cleaning seat, thereby preventing rust from accumulating on the rust removal head. In this way, the overall operation is smooth, and no complicated electrical control and use are required. On the one hand, electric drive equipment can stably remove rust from the dead corners inside the angle iron. On the other hand, through simple alternating activities and subsequent rubbing, the replaced rust removal heads can be automatically cleaned to achieve continuous and stable rust removal operations, improve the overall rust removal ability of the angle iron, and avoid the subsequent material coating process being blocked by rust and causing loose coating. In traditional technologies, in order to facilitate processing, transportation and improve strength, the side edges of the rust removal wheels are mostly designed as arc structures. When the rust removal heads with this structure are used to remove rust from the dead corners inside the angle iron, the dead corner edge seams will be missed, which will have an adverse effect on the subsequent material coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the interlayer of the present invention;

[0024] Figure 2 This is a data diagram of the salt spray resistance and acid and alkali resistance experiments of the present invention;

[0025] Figure 3 This is a salt spray resistance experiment effect diagram of the present invention;

[0026] Figure 4 This is an acid and alkali resistance experiment effect diagram of the present invention;

[0027] Figure 5 This is a schematic diagram of the front cross-section structure of the rust removal equipment of the present invention;

[0028] Figure 6 This is a schematic diagram of the top view of the structure of the third mounting frame in the rust removal equipment of the present invention;

[0029] Figure 7 It is a schematic diagram of the side section structure of the mounting plate in the rust removal equipment of the present invention;

[0030] Figure 8 This is a schematic diagram of the cross-sectional structure of the tooth plate in the rust removal equipment of the present invention;

[0031] Fig. 9 This is a schematic diagram of the top view distribution structure of the cleaning rack in the rust removal equipment of the present invention;

[0032] Fig.10 This is a schematic diagram of the structure of the cleaning component in the rust removal equipment of the present invention;

[0033] Fig.11 It is a schematic diagram of the front section structure of the cleaning seat in the rust removal equipment of the present invention;

[0034] Fig.12 It is a schematic diagram of the front structure of the cleaning plate in the rust removal equipment of the present invention.

[0035] In the figure: 1, box; 2, first mounting frame; 3, guide wheel; 4, second mounting frame; 5, rust removal wheel; 6, third mounting frame; 7, hydraulic cylinder; 8, mounting seat; 9, electric push rod; 10, elastic telescopic rod; 11, mounting plate; 12, misalignment transmission component; 121, first transmission rack; 122, gear; 123, second transmission rack; 13, mounting column; 14, rust removal head; 15, one-way transposition component ; 151, tooth roller; 152, tooth plate; 153, storage groove; 154, tooth block; 16, spring; 17, mounting rod; 18, cleaning seat; 19, lifting assembly; 191, bottom plate; 192, guide plate; 193, bump; 20, cleaning assembly; 201, toothed disc; 202, cleaning rack; 203, connecting rod; 204, push bar; 205, cleaning plate; 206, docking groove; 207, air pipe. DETAILED DESCRIPTION

[0036] 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.

[0037] See also Figure 1-Figure 12 The present invention provides a technical solution: a heavy-duty anti-corrosion and high-weather-resistant material and coating process for photovoltaic accessories, a box body 1, a first mounting frame 2, a guide wheel 3, a second mounting frame 4, a rust removal wheel 5, a third mounting frame 6, a hydraulic cylinder 7, a mounting seat 8, an electric push rod 9, an elastic telescopic rod 10, a mounting plate 11, a dislocation conduction component 12, a first conduction rack 121, a gear 122, a second conduction rack 123, a mounting column 13, a rust removal head 14, a one-way transposition component 15, a tooth roller 151, a tooth plate 152, a storage groove 153, a tooth block 154, a spring 16, a mounting rod 17, a cleaning seat 18, a lifting component 19, a bottom plate 191, a guide plate 192, a protrusion 193, a cleaning component 20, a toothed disc 201, a cleaning rack 202, a connecting rod 203, a push bar 204, a cleaning plate 205, a docking groove 206 and an air pipe 207.

[0038] Example 1: Please refer to Figure 1-Figure 4The material includes the following components: the material includes the following components: high acrylonitrile SAN content 30-50%, maleic anhydride styrene copolymer or maleic anhydride grafted SAN content 1-20%, ASA rubber powder content 20-40%, pentaerythritol ester lubricant content 1-4%, hindered phenol antioxidant content 1-4%, phosphite antioxidant content 1-4%, benzotriazole UV absorber content 1-4%, hindered amine light stabilizer content 1-4%, high weather-resistant pigment content 1-4%, flexible acrylate or flexible polyurethane High acrylonitrile SAN, maleic anhydride styrene copolymer or maleic anhydride grafted SAN, ASA rubber powder, pentaerythritol ester lubricant, hindered phenol antioxidant, phosphite antioxidant, benzotriazole UV absorber, hindered amine light stabilizer and high weather-resistant pigment are mixed, extruded and granulated to obtain modified ASA material. Flexible acrylate or flexible polyurethane is used as the middle layer. The acrylonitrile content in high acrylonitrile SAN is ≥30%, the hardness of flexible acrylate is 50-70A, and the flexible polyurethane adopts polyester flexible polyurethane.

[0039] Embodiment 2: Based on embodiment 1, the coating process includes the following steps:

[0040] S1: Select angle iron, send it to the rust removal equipment for surface rust removal, then degrease and clean it, and then send it to the preheating oven for drying and preheating, and the preheating temperature is controlled at 80-100℃;

[0041] S2: The angle iron after drying and preheating is sent to the first co-extrusion die. The temperature of the co-extrusion die is controlled at 160-180°C. It is coated with flexible acrylic or flexible polyurethane material with a thickness of 0.1mm, and then cooled and shaped. The temperature is lower than 80°C.

[0042] S3: The angle iron after shaping and cooling is sent to the preheating drying tunnel, heated to 100-120°C, and then enters the second co-extrusion die. The temperature of the co-extrusion die is controlled at 180-200°C, and the modified ASA material is coated with a thickness of 0.2mm. Then it is cooled and shaped, cut, and coated with acrylic adhesive on the cut surface after cutting.

[0043] Example 3: Based on Example 2, please refer to Figure 5-Figure 12The rust removal equipment comprises a box body 1, three first mounting frames 2 are installed at equal intervals in the box body 1, and a guide wheel 3 is arranged in the first mounting frame 2, and a second mounting frame 4 is arranged between two adjacent first mounting frames 2, a rust removal wheel 5 is installed in the second mounting frame 4, and the rust removal wheels 5 in the two second mounting frames 4 are arranged perpendicular to each other; a third mounting frame 6 is fixed inside the feeding end of the box body 1, and a hydraulic cylinder 7 is embedded in the cavity on the rear side of the third mounting frame 6, and the output end of the hydraulic cylinder 7 is connected to a mounting seat 8 through a rod, and an electric push rod 9 and an elastic telescopic rod 10 are respectively fixed at the left and right positions of the rear side of the mounting seat 8, and the rear ends of the electric push rod 9 and the elastic telescopic rod 10 are fixed with mounting plates 11, and a dislocation conduction component 12 is arranged between the two mounting plates 11, and the dislocation conduction component 12 is used to drive the two mounting plates 11 to move in opposite directions, and a mounting column 13 is rotatably arranged at the rear end protrusion position of the mounting plate 11, and a rust removal head 14 is fixed on the outer side of the mounting column 13, and the mounting plate 11 is fixed with a rust removal head 14. A one-way shifting assembly 15 is provided between the interior and the mounting seat 8, and the one-way shifting assembly 15 is used to drive the mounting column 13 to rotate in one direction. A mounting rod 17 is connected to the inner cavity at the bottom protrusion of the mounting plate 11 through a spring 16, and a cleaning seat 18 is fixed to the rear end of the mounting rod 17, and the cleaning seat 18 is located below the mounting column 13. A lifting assembly 19 is provided between the bottom of the mounting rod 17 and the rear side of the third mounting frame 6, and the lifting assembly 19 is used to lift the mounting rod 17, and the cleaning seat A cleaning assembly 20 is provided between the interior of 18 and the lifting assembly 19, and the cleaning assembly 20 is used to clean the rust removal head 14; the misaligned transmission assembly 12 includes a first transmission rack 121 and a first transmission rack 121, and the first transmission rack 121 and the first transmission rack 121 are respectively fixed at the front side edges of the two mounting plates 11, and a gear 122 is meshed between the first transmission rack 121 and the first transmission rack 121, and the gear 122 is installed in the middle of the rear side of the mounting seat 8;

[0044] The cross-section of the rust removal head 14 is designed to be a triangular structure, and the rust removal head 14 is distributed at equal angles on the mounting column 13; the one-way shifting assembly 15 includes a toothed roller 151, which is embedded and rotatably mounted in the mounting plate 11, and the toothed roller 151 is connected to the mounting column 13 through a belt transmission, a toothed plate 152 is arranged on the top of the toothed roller 151, and the toothed plate 152 is fixed to the rear side of the mounting seat 8, and the toothed plate 152 is slidably arranged in the internal cavity of the mounting plate 11, and a receiving groove 153 is provided at the bottom of the toothed plate 152, and a toothed block 154 is rotatably mounted in the receiving groove 153 through a torsion spring; the toothed block 154 rotates unidirectionally in the storage groove 153, and the storage groove 153 is evenly spaced at the bottom of the tooth plate 152, and the tooth block 154 is meshed with the tooth roller 151; the lifting component 19 includes a bottom plate 191, the bottom plate 191 is fixed to the bottom of the rear side of the third mounting frame 6, and a guide plate 192 is fixed on the bottom plate 191, the guide plate 192 is located on the active track of the protrusion 193, and the protrusion 193 is fixed to the bottom of the mounting rod 17, the protrusion 193 is designed as a hemispherical structure, and the rear side of the guide plate 192 is designed as an inclined structure; the cleaning component 20 includes a toothed disc 201, and the toothed disc 201 is embedded and installed At the bottom of the cleaning seat 18, a cleaning rack 202 is arranged on the moving track of the toothed disc 201, and the cleaning rack 202 is fixed on the bottom plate 191. A connecting rod 203 is sleeved on the eccentric protrusion on the rear side of the toothed disc 201, and a push strip 204 is rotatably installed on the top of the connecting rod 203, and a cleaning plate 205 is fixed on the top of the push strip 204. The cleaning plate 205 is embedded and fits and slides inside the cleaning seat 18, and a docking groove 206 is arranged on the top of the cleaning seat 18, and the docking groove 206 is opened at the top of the cleaning seat 18, and an air pipe is connected to the side wall of the internal cavity of the cleaning seat 18 207, and the air pipe 207 corresponds to the position of the cleaning plate 205, and the air pipe 207 is connected to an external air pump; the push strip 204 drives the cleaning plate 205 to slide back and forth vertically in the cleaning seat 18 through the rotation of the toothed disc 201 and the connecting rod 203, and the cross-sectional shape of the docking groove 206 is adapted to the cross-sectional shape of the rust removal head 14; the rust is removed from the four sides of the diagonal iron through two sets of rust removal wheels 5, and then the rust is removed from the internal corners of the diagonal iron through the rust removal head 14, so as to achieve uniform and stable rust removal of the diagonal iron, and through the alternating use of the rust removal head 14 for cleaning, a long-term and stable rust removal operation can be achieved.

[0045] Working principle: Figure 5-Figure 12In the process of removing rust from the angle iron, the angle iron is first fed into the box body 1, guided by the guide wheel 3, and rust removed from all four sides by the rust removal wheel 5. In this process, when the angle iron is being transported, the hydraulic cylinder 7 drives the mounting seat 8 to move back and forth quickly, so that the tip of the rust removal head 14 rubs against the dead angle inside the angle iron to remove rust. Then the hydraulic cylinder 7 drives the mounting seat 8 to reset, and the electric push rod 9 pushes the mounting plate 11 on it to retract, and the first transmission rack 121, the gear 122 and the second transmission rack 123 conduct the transmission, so that the mounting plate 11 on the elastic telescopic rod 10 extends, and the rust removal head at the mounting plate 11 on the elastic telescopic rod 10 is pushed out. 14 continues to remove rust from the angle iron dead corner. During this process, the contraction of the mounting plate 11 drives the tooth roller 151 to move. When the contracted rust removal head 14 is separated from the angle iron first, the tooth roller 151 meshes with the tooth block 154. At this time, the tooth block 154 will not rotate into the storage groove 153, and then the mounting column 13 can be driven by the tooth roller 151 to rotate, and the rust removal head 14 that has just been rusted is rotated to the bottom, so that the new rust removal head 14 is rotated to the rust removal position, and the rust removal head 14 is switched. At the same time, the extended mounting plate 11, because the tooth block 154 in this direction can be rotated into the storage groove 153, and then the rust removal head 14 on the extended mounting plate 11 will remain in place;

[0046] Furthermore, when the mounting plate 11 is retracted, the protrusion 193 at the bottom of the mounting rod 17 moves to the guide plate 192. This process can be achieved by setting the position of the guide plate 192 so that the rust removal head 14 can make contact again after the switch. The protrusion 193 contacts the inclined surface of the guide plate 192, which can push the mounting rod 17 to move up, and the cleaning seat 18 is driven to move up by the mounting rod 17. After the rust removal head 14 is switched, the docking groove 206 at the top of the cleaning seat 18 is sleeved on the bottom of the rust removal head 14. When the mounting plate 11 is retracted, the toothed disc 201 at the bottom of the cleaning seat 18 reaches the end position of the cleaning rack 202, completing the entire switching operation, and then the hydraulic cylinder 7 drives again The mounting seat 8 moves back and forth quickly, and the rust removal head 14 that is extended after switching is used to rub and remove rust at the dead corner of the diagonal iron. At this time, the toothed disc 201 is meshed with the cleaning rack 202, so that the toothed disc 201 drives the cleaning plate 205 to move up and down through the connecting rod 203 and the push bar 204. The cleaning plate 205 contacts the bottom of the rust removal head 14, and the rust on the bottom of the rust removal head 14 is detached under the action of vibration, and the rust is blown away by an external air pump in cooperation with the air pipe 207 to complete the cleaning of the rust on the rust removal head 14, so as to avoid the accumulation of rust caused by continuous use of the rust removal head 14 and affect the long-term rust removal effect. Then, the two mounting plates 11 can be switched according to the above steps.

[0047] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. In the description of the present invention, unless otherwise specified, "multiple" means two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coating process for photovoltaic accessories, characterized in that: The coating process includes the following steps: S1: Select angle iron, send it to the rust removal equipment for surface rust removal, then degrease and clean it, and then send it to the preheating oven for drying and preheating, and the preheating temperature is controlled at 80-100℃; S2: The angle iron after drying and preheating is sent to the first co-extrusion die. The temperature of the co-extrusion die is controlled at 160-180°C. It is coated with flexible acrylic or flexible polyurethane material with a thickness of 0.1mm, and then cooled and shaped. The temperature is lower than 80°C. S3: The angle iron after shaping and cooling is sent to the preheating drying tunnel, heated to 100-120°C, and then enters the second co-extrusion die. The temperature of the co-extrusion die is controlled at 180-200°C, and the modified ASA material is coated with a thickness of 0.2mm. Then it is cooled and shaped, cut, and acrylic adhesive is coated on the cut surface after cutting; The rust removal device comprises a box (1), three first mounting frames (2) are installed at equal intervals in the box (1), a guide wheel (3) is arranged in the first mounting frame (2), a second mounting frame (4) is arranged between two adjacent first mounting frames (2), a rust removal wheel (5) is installed in the second mounting frame (4), and the rust removal wheels (5) in the two second mounting frames (4) are arranged perpendicular to each other; The invention also comprises a third mounting frame (6), wherein the third mounting frame (6) is fixed inside the feeding end of the box body (1), and a hydraulic cylinder (7) is embedded in the cavity on the rear side of the third mounting frame (6), and the output end of the hydraulic cylinder (7) is connected to the mounting seat (8) through a rod, and an electric push rod (9) and an elastic telescopic rod (10) are respectively fixed at the left and right positions of the rear side of the mounting seat (8), and the rear ends of the electric push rod (9) and the elastic telescopic rod (10) are fixed with mounting plates (11), and a misalignment conduction component (12) is provided between the two mounting plates (11), and the misalignment conduction component (12) is used to drive the two mounting plates (11) to move in opposite directions, and a mounting column (13) is rotatably provided at a raised position on the rear end of the mounting plate (11), and a rust removal head is fixed on the outer side of the mounting column (13). (14), a one-way shifting assembly (15) is arranged between the interior of the mounting plate (11) and the mounting seat (8), and the one-way shifting assembly (15) is used to drive the mounting column (13) to rotate in one direction, a mounting rod (17) is connected to the interior cavity of the protrusion at the bottom of the mounting plate (11) through a spring (16), and a cleaning seat (18) is fixed to the rear end of the mounting rod (17), and the cleaning seat (18) is located below the mounting column (13), a lifting assembly (19) is arranged between the bottom of the mounting rod (17) and the rear side of the third mounting frame (6), and the lifting assembly (19) is used to lift the mounting rod (17), and a cleaning assembly (20) is arranged between the interior of the cleaning seat (18) and the lifting assembly (19), and the cleaning assembly (20) is used to clean the rust removal head (14).

2. A coating process for photovoltaic accessories according to claim 1, characterized in that: The misaligned conduction assembly (12) comprises a first conduction rack (121) and a first conduction rack (121), and the first conduction rack (121) and the first conduction rack (121) are respectively fixed at the front side edges of the two mounting plates (11), a gear (122) is meshed between the first conduction rack (121) and the first conduction rack (121), and the gear (122) is mounted on the middle part of the rear side of the mounting seat (8).

3. A coating process for photovoltaic accessories according to claim 2, characterized in that: The cross-section of the rust removal head (14) is designed to be a triangular structure, and the rust removal heads (14) are distributed at equal angles on the mounting column (13).

4. The coating process for photovoltaic accessories according to claim 3, characterized in that: The one-way shifting assembly (15) comprises a toothed roller (151), the toothed roller (151) being embedded and rotatably mounted in the mounting plate (11), and the toothed roller (151) being transmission-connected to the mounting column (13) via a belt, a toothed plate (152) being arranged on the top of the toothed roller (151), the toothed plate (152) being fixed on the rear side of the mounting seat (8), and the toothed plate (152) being slidably arranged in the internal cavity of the mounting plate (11), a receiving and releasing groove (153) being arranged on the bottom of the toothed plate (152), and a toothed block (154) being rotatably mounted in the receiving and releasing groove (153) via a torsion spring.

5. The coating process for photovoltaic accessories according to claim 4, characterized in that: The tooth block (154) rotates unidirectionally in the receiving and releasing groove (153), and the receiving and releasing grooves (153) are distributed at equal intervals at the bottom of the tooth plate (152), and the tooth block (154) is meshed with the tooth roller (151).

6. A coating process for photovoltaic accessories according to claim 5, characterized in that: The lifting assembly (19) comprises a base plate (191), the base plate (191) being fixed to the bottom of the rear side of the third mounting frame (6), and a guide plate (192) being fixed to the base plate (191), the guide plate (192) being located on the movable track of the protrusion (193), and the protrusion (193) being fixed to the bottom of the mounting rod (17), the protrusion (193) being designed as a hemispherical structure, and the rear side of the guide plate (192) being designed as an inclined structure.

7. A coating process for photovoltaic accessories according to claim 6, characterized in that: The cleaning assembly (20) comprises a toothed disc (201), the toothed disc (201) being embedded and mounted at the bottom of the cleaning seat (18), and a cleaning rack (202) being arranged on the movable track of the toothed disc (201) and being fixed on the bottom plate (191), a connecting rod (203) being sleeved on an eccentric protrusion on the rear side of the toothed disc (201), and a push bar (204) being rotatably mounted on the top of the connecting rod (203), and a cleaning plate (205) being fixed on the top of the push bar (204), and the cleaning plate (205) being embedded and slidingly fitted inside the cleaning seat (18), and the cleaning plate (205) being A docking groove (206) is provided on the top of the cleaning plate (205), and the docking groove (206) is opened on the top of the cleaning seat (18). An air pipe (207) is connected to the side wall of the inner cavity of the cleaning seat (18), and the air pipe (207) corresponds to the position of the cleaning plate (205), and the air pipe (207) is connected to an external air pump. The push bar (204) drives the cleaning plate (205) to slide vertically and reciprocatingly in the cleaning seat (18) through the rotation of the toothed disc (201) and the connecting rod (203). The cross-sectional shape of the docking groove (206) is adapted to the cross-sectional shape of the rust removal head (14).

8. A heavy-duty anti-corrosion and high weather-resistant material for photovoltaic accessories, applied to a coating process for photovoltaic accessories as described in claim 7, characterized in that: The material comprises the following components: a high acrylonitrile SAN content of 30-50%, a maleic anhydride styrene copolymer or a maleic anhydride grafted SAN content of 1-20%, an ASA rubber powder content of 20-40%, a pentaerythritol ester lubricant content of 1-4%, a hindered phenol antioxidant content of 1-4%, a phosphite antioxidant content of 1-4%, a benzotriazole ultraviolet light absorber content of 1-4%, a hindered amine light stabilizer content of 1-4%, a high weather-resistant pigment content of 1-4%, and a flexible acrylate or a flexible polyurethane. The high acrylonitrile SAN, the maleic anhydride styrene copolymer or the maleic anhydride grafted SAN, the ASA rubber powder, the pentaerythritol ester lubricant, the hindered phenol antioxidant, the phosphite antioxidant, the benzotriazole ultraviolet light absorber, the hindered amine light stabilizer and the high weather-resistant pigment are mixed, extruded and granulated to obtain a modified ASA material, and the flexible acrylate or the flexible polyurethane is used as an intermediate layer.

9. The heavy-duty anti-corrosion and high-weather-resistant material for photovoltaic accessories according to claim 8, characterized in that: The acrylonitrile content in the high acrylonitrile SAN is ≥30%, the hardness of the flexible acrylic ester is 50-70A, and the flexible polyurethane is polyester flexible polyurethane.

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