Production process and coating system of double-side coating type white whiteboard base film

Abstract

The invention belongs to the technical field of backboard base film production, and particularly relates to a production process and a coating system of a double-sided coating type white whiteboard base film, and the production process comprises the following steps: S1, a production process: coating a white backboard base film, bidirectionally and synchronously stretching, shaping, rolling and slitting; s2, a base film structure, wherein a white backboard base film comprises a base material layer, an inner coating layer and an outer coating layer; s3, according to the technological requirements, the inner coating layer and the outer coating layer are formed in a coating system at a time; wherein the inner coating layer comprises fluorine-containing resin, acrylic resin, a curing agent, matting powder, inorganic particles and an organic solvent, and the outer coating layer comprises fluorine-containing resin, a curing agent, inorganic particles and an organic solvent.

Description

Technical Field

[0001] The invention belongs to the technical field of backboard base film production, and in particular relates to a production process of a double-sided coated white board base film and a coating system thereof. Background Art

[0002] The solar cell backplane is located at the outermost layer on the back of the module. It protects the solar cell module from water vapor erosion in outdoor environments, blocks oxygen to prevent oxidation, is resistant to high and low temperatures, has good insulation and aging resistance, corrosion resistance, reflects sunlight, and improves the conversion efficiency of the module; and has a high infrared reflectivity, which can reduce the temperature of the module. From a process point of view, the solar cell back film is divided into two types: single-sided coating and double-sided coating. The backplane uses white PET as the base material, and the white backplane is obtained after double-sided coating. Since the outer layer does not need to be pasted with a fluorine film, the laminating process is reduced. The cost of the double-sided fluorine-containing backplane is lower than that of the white backplane coated on one side and laminated on the other side. Therefore, we have specially designed a production process and coating system for a double-sided coated white board base film. Summary of the invention

[0003] The purpose of the present invention is to provide a production process and coating system for a double-sided coated white board base film in order to solve the above-mentioned technical problems, thereby reducing the molding process and improving production efficiency.

[0004] In view of this, the present invention provides a production process of a double-sided coated white board base film and a coating system thereof, comprising:

[0005] S1. Production process: white backboard base film coating, bidirectional synchronous stretching, shaping, winding and slitting;

[0006] S2, base film structure, the white backboard base film includes a substrate layer, an inner coating layer and an outer coating layer;

[0007] S3, process requirements, the inner coating layer and the outer coating layer are formed at one time in the coating system;

[0008] The inner coating layer includes fluorine-containing resin, acrylic resin, curing agent, matting powder, inorganic particles and organic solvent, and the outer coating layer includes fluorine-containing resin, curing agent, inorganic particles and organic solvent.

[0009] In the above technical solution, further, the coating system includes:

[0010] A frame, wherein a partition boss is arranged in the frame, and a first chamber and a second chamber are formed on both sides of the partition boss;

[0011] A pre-coating device is disposed in the first chamber, a feeding end is disposed at the front end of the pre-coating device, and the pre-coating device coats an inner coating layer on the substrate layer;

[0012] A rear coating device is disposed in the second chamber, a discharge end is disposed at the rear end of the rear coating device, and the front coating device coats an outer coating layer on the substrate layer based on the inner coating layer;

[0013] A material receiving device, which is arranged outside the feeding end and the discharging end and dries the back sheet base film;

[0014] The material guiding device is arranged in the frame and guides the substrate layer to pass through the front coating device or the rear coating device.

[0015] In the above technical solution, further, the pre-coating device includes:

[0016] A nip roller, wherein a plurality of nip rollers are arranged up and down in the first chamber;

[0017] A first electric telescopic rod, the first electric telescopic rod connecting the nip roller to the first chamber;

[0018] Wherein, the first electric telescopic rod is arranged on the upper side of the frame, and the movable end of the first telescopic rod extends into the first chamber;

[0019] The post-coating device has the same structure as the pre-coating device.

[0020] In the above technical solution, further, it also includes:

[0021] A residual material removal device, which is arranged on the partition protrusion and performs expected removal of the back plate base film;

[0022] The residual material removal device includes:

[0023] A second electric telescopic rod, the second electric telescopic rod is arranged on the frame, and the movable end of the second electric telescopic rod extends to the upper end of the partition protrusion;

[0024] A third electric telescopic rod, which is arranged on the partition protrusion and corresponds to the second electric telescopic rod;

[0025] The wiping roller is arranged on the movable ends of the second electric telescopic rod and the third electric telescopic rod.

[0026] In the above technical solution, further, the material guiding device includes:

[0027] A built-in track assembly, wherein the built-in track assembly is arranged inside the frame;

[0028] An external rail assembly, which is arranged outside the rack and corresponds to the internal rail assembly;

[0029] A linkage assembly connects the internal track assembly and the external track assembly together in synchronous motion;

[0030] The clamping assembly is arranged on the built-in track assembly. In the above technical solution, further, the material receiving device includes:

[0031] The receiving roller is arranged outside the feeding end and the discharging end;

[0032] The motor is connected to the receiving roller.

[0033] In the above technical solution, further, the built-in track assembly includes:

[0034] The slide rails include the first slide rail, the second slide rail and the third slide rail, and are arranged on both sides of the rack.

[0035] A pulley, the pulley is arranged on a slide rail;

[0036] A stabilizing frame, the stabilizing frame is connected to the first pulley and the second pulley, and the clamping assembly is arranged on the stabilizing frame;

[0037] Wherein, the linkage assembly is arranged on the pulley.

[0038] In the above technical solution, further, the external track assembly includes:

[0039] Slide structure, the slide components are arranged on both sides of the frame and correspond to the slide rails;

[0040] A roller assembly, the roller comprising a first roller, a second roller and a fixing frame;

[0041] The fixed frame includes a first extension frame, a second extension frame, a third extension frame and a fourth extension frame, the first extension frame is connected to the first roller, the second extension frame is connected to the second roller, the third extension frame is connected to the linkage assembly, and the fourth extension frame is connected to the slide structure;

[0042] Among them, the frame corresponds to the slide structure and the slide rail and is provided with a through groove on the outer wall surface, and the roller assembly is arranged in the through groove.

[0043] In the above technical solution, further, the linkage component includes:

[0044] A magnetic block, wherein the magnetic block is arranged on the first pulley and the second pulley;

[0045] The electromagnetic block is arranged on the third extension frame and corresponds to the magnetic block.

[0046] In the above technical solution, further, the clamping assembly includes:

[0047] A bottom plate, the bottom plate is connected to the stable frame;

[0048] The pressing plate is arranged on the bottom plate by bolts, and a rubber plate with toothed protrusions is arranged on the lower side of the pressing plate.

[0049] The beneficial effects of the present invention are:

[0050] 1. The back sheet film has good water and oxygen barrier properties, high and low temperature resistance, good insulation, aging resistance, corrosion resistance, and the inner layer of the EVA bonding surface is coated with fluororesin to have good water and oxygen barrier properties. The outer coating surface is the surface in contact with the environment and has good resistance to environmental erosion. Compared with the composite solar white back sheet film, the coated solar white back sheet film has a cost advantage.

[0051] 2. It helps to reduce working hours, thereby improving work efficiency and increasing corporate profits. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the structure of the present invention;

[0053] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0054] Figure 3 It is a partial structural schematic diagram of the present invention;

[0055] Figure 4 is a schematic diagram of a plastic sheet of the present invention;

[0056] Figure 5 This is a schematic diagram of the white backplane base film of the present invention

[0057] The markings in the figure are as follows: 1, base film structure; 11, substrate layer; 12, inner coating layer; 13, outer coating layer; 2, frame; 21, first chamber; 22, second chamber; 23, through slot; 3, front coating device; 31, press roller; 32, first electric telescopic rod; 4, rear coating device; 5, receiving device; 51, receiving roller; 52, motor; 53, bracket; 61, built-in track assembly; 611, slide rail; 6111, first slideway; 6112, second slideway; 6113, third slide; 612, pulley; 613, stabilizing frame; 62, external track assembly; 621, slide structure; 622, roller structure; 6221, first roller; 6222, second roller; 6223, fixing frame; 63, linkage assembly; 631, magnetic block; 632, electromagnetic block; 64, clamping assembly; 641, bottom plate; 642, pressure plate; 643, rubber plate; 71, second telescopic rod; 72, second telescopic rod; 73, wiping roller; 8, plastic sheet. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0059] Embodiment 1:

[0060] This embodiment provides a production process of a double-sided coated white board base film and a coating system thereof, including:

[0061] S1. Production process: white backboard base film coating, bidirectional synchronous stretching, shaping, winding and slitting;

[0062] S2, base film structure 1, the white backboard base film includes a substrate layer 11, an inner coating layer 12 and an outer coating layer 13;

[0063] S3, process requirements, the inner coating layer 12 and the outer coating layer 13 are formed at one time in the coating system;

[0064] The inner coating layer 12 includes fluorine-containing resin, acrylic resin, curing agent, matting powder, inorganic particles and organic solvent, and the outer coating layer 13 includes fluorine-containing resin, curing agent, inorganic particles and organic solvent.

[0065] It can be seen from this embodiment that a production process of a double-sided coated white 100-fold base film and its coating system include S1 production process, S2 base film structure 1 and S3 process requirements;

[0066] The back sheet film of the present invention has good water and oxygen barrier performance, high and low temperature resistance, good insulation and aging resistance, corrosion resistance, and the inner layer coating of the EVA bonding surface with fluororesin has good water and oxygen barrier performance. The outer coating surface is the surface in contact with the environment and has good resistance to environmental erosion. Compared with the composite solar white back sheet film, the coated solar white back sheet film has a cost advantage.

[0067] Embodiment 2:

[0068] This embodiment provides a coating system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0069] The frame 2 is provided with a partition boss, and a first chamber 21 and a second chamber 22 are formed on both sides of the partition boss;

[0070] A pre-coating device 3 is disposed in the first chamber 21, a feeding end is disposed at the front end of the pre-coating device 3, and the pre-coating device 3 coats an inner coating layer 12 on the substrate layer 11;

[0071] The rear coating device 4 is disposed in the second chamber 22, and a discharge end is disposed at the rear end of the rear coating device 4. The front coating device 3 coats the outer coating layer 13 on the substrate layer 11 based on the inner coating layer 12;

[0072] A material receiving device 5, which is arranged outside the feeding end and the discharging end;

[0073] The material guiding device is arranged in the frame 2 and guides the substrate layer 11 to pass through the front coating device 3 or the rear coating device 4 .

[0074] It can be seen from this embodiment that a coating system includes a frame 2, a front coating device 3, a rear coating device 4, a material receiving device 5 and a material guiding device;

[0075] A partition boss is formed in the frame 2, which divides the frame 2 and forms a first chamber 21 and a second chamber 22 in the frame 2. The front coating device 3 is installed in the first chamber 21, and the front end of the frame 2 is provided with a feeding end corresponding to the front coating device 3, the rear coating device 4 is installed in the second chamber 22, and the rear end of the frame 2 is provided with a discharging end corresponding to the rear coating device 4. The receiving device 5 is installed on the outside of the feeding end and the discharging end, and reels the backboard base film material when in use. The material guiding device is arranged on the frame 2, and guides the backboard base film material from the feeding end through the first chamber 21 or the second chamber 22 and out of the discharging end when in use;

[0076] When in use, the material guide device guides the backplane base film to enter the front coating device 3 or the rear coating device 4, and the two ends of the backplane base film are controlled by the winding device. After the front coating device 3 is coated once, the backplane base film can be taken back by the winding device 5, and after the inner coating layer 12 coated once is preliminarily dried, the backplane base film is controlled by the material guide device to enter the rear coating device 4 for secondary coating, thereby realizing the coating operation of the inner coating layer 12 and the outer coating layer 13 of the backplane base film;

[0077] It helps to reduce working hours, thereby improving work efficiency and increasing corporate profits.

[0078] Embodiment 3:

[0079] This embodiment provides a coating system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0080] The front coating device 3 comprises:

[0081] A nip roller 31, wherein a plurality of nip rollers 31 are disposed up and down in the first chamber 21;

[0082] A first electric telescopic rod 32 , which connects the nip roller 31 to the first chamber 21 ;

[0083] The first electric telescopic rod 32 is arranged on the upper side of the frame 2, and the movable end of the first telescopic rod extends into the first chamber 21;

[0084] The post-coating device 4 has the same structure as the pre-coating device 3 .

[0085] It can be seen from this embodiment that the front coating device 3 and the rear coating device 4 have the same structure, both comprising a nip roller 31 and a first electric telescopic rod 32;

[0086] When in use, the first electric telescopic rod 32 drives the pressing roller 31 to press the backplane base film into the coating raw material solution, thereby preventing the backplane base film from being separated from the coating raw material solution and causing poor coating effect.

[0087] Embodiment 4:

[0088] This embodiment provides a coating system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0089] A residual material removal device, which is arranged on the partition protrusion and performs expected removal of the back plate base film;

[0090] The residual material removal device includes:

[0091] A second electric telescopic rod, the second electric telescopic rod is arranged on the frame 2, and the movable end thereof extends to the upper end of the partition protrusion;

[0092] A third electric telescopic rod, which is arranged on the partition protrusion and corresponds to the second electric telescopic rod;

[0093] The wiping roller 73 is arranged on the movable ends of the second electric telescopic rod and the third electric telescopic rod.

[0094] It can be seen from this embodiment that the excess material removal device includes a second electric telescopic rod, a third electric telescopic rod and a wiping roller 73;

[0095] The second electric telescopic rod is arranged on the upper side of the frame 2 and extends into the frame 2 to correspond to the partition protrusion. The third electric telescopic rod is arranged on the partition protrusion and corresponds to the second electric telescopic rod. When in use, the second electric telescopic rod and the third electric telescopic rod drive the wiping roller 73 to approach each other and clean the back plate base film, thereby removing excess coating raw material solution on the back plate base film.

[0096] Embodiment 5:

[0097] This embodiment provides a coating system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0098] The material guiding device includes:

[0099] A built-in rail assembly 61, the built-in rail assembly 61 is arranged inside the frame 2;

[0100] An external rail assembly 62, which is disposed outside the frame 2 and corresponds to the internal rail assembly 61;

[0101] A linkage assembly 63, the linkage assembly 63 connects the internal track assembly 61 and the external track assembly 62 together for synchronous movement;

[0102] The clamping assembly 64 is disposed on the built-in track assembly 61 .

[0103] It can be seen from this embodiment that the material guide assembly includes an internal track assembly 61, an external track assembly 62, a linkage assembly 63 and a clamping assembly 64;

[0104] The built-in track component 61 is installed on the inner side of the frame 2, on the wall of the first chamber 21 and the second chamber 22. The external track component 62 is installed on the outer wall of the frame 2 and corresponds to the built-in track component 61. The linkage component 63 matches the built-in track component 61 and the external track component 62 together. When in use, the built-in track component 61 is controlled by the external track component 62 to move, and the structure of the built-in track component 61 can be de-electrified, thereby preventing the built-in track component 61 from being electrically damaged due to long-term contact with the coating material solution. The clamping component 64 is installed on the built-in track component 61. When in use, after the clamping component 64 clamps the backplane base film at the feed end, the built-in track component 61 controls the clamping component 64 to pass through the frame 2 and connect with the receiving device 5 outside the discharge end.

[0105] Embodiment 6:

[0106] This embodiment provides a coating system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0107] The material receiving device 5 comprises:

[0108] A receiving roller 51, which is arranged outside the feeding end and the discharging end;

[0109] The motor 52 is connected to the receiving roller 51 .

[0110] It can be seen from this embodiment that the material receiving device 5 includes a material receiving roller 51 and a motor 52. The material receiving device 5 is connected to a bracket 53. When in use, the motor 52 drives the material receiving roller 51 to reel in the backplane base film.

[0111] Embodiment 7:

[0112] This embodiment provides a coating system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0113] The built-in track assembly 61 includes:

[0114] The slide rail 611 includes a first slide rail 6111, a second slide rail 6112 and a third slide rail 6113, and is provided on both sides of the rack 2.

[0115] A pulley 612, the pulley 612 is arranged on the slide rail 611;

[0116] A stabilizing frame 613, the stabilizing frame 613 is connected to the first pulley 612 and the second pulley 612, and the clamping assembly 64 is disposed on the stabilizing frame 613;

[0117] The linkage assembly 63 is arranged on the pulley 612 .

[0118] It can be seen from this embodiment that the built-in track assembly 61 includes a slide rail 611, a pulley 612 and a stabilizing frame 613;

[0119] The slide rail 611 includes a first slide rail 6111, a second slide rail 6112 and a third slide rail 6113. The pulley 612 is connected to the slide rail 611. When in use, the pulley 612 is connected to the slide rails 611 on both sides of the rack 2 and then fixedly matched with the pulley 612 through the stabilizing frame 613.

[0120] When in use, the first slide 6111, the second slide 6112 and the third slide groove form two paths, namely the first slide 6111-the second slide 6112 and the first slide 6111-the third slide 6113, wherein the first slide 6111-the second slide 6112 passes through the post-coating device 4, and the first slide 6111-the third slide 6113 passes through the pre-coating device 3, thereby achieving the function of controlling the backplane base film to enter the pre-coating device 3 or the post-coating.

[0121] Embodiment 8:

[0122] This embodiment provides a coating system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0123] The external track assembly 62 includes:

[0124] Slide structure 621, slide components are arranged on both sides of the frame 2 and correspond to the slide rails 611;

[0125] The roller assembly includes a first roller 6221, a second roller 6222 and a fixing frame 6223;

[0126] The fixed frame 6223 includes a first extension frame, a second extension frame, a third extension frame and a fourth extension frame;

[0127] The frame 2 is provided with a through slot 23 on the outer wall surface corresponding to the slide structure 621 and the slide rail 611 , and the roller assembly is arranged in the through slot 23 .

[0128] It can be seen from this embodiment that the external track assembly 62 includes a slide structure 621 and a roller assembly. The slide structure 621 is arranged corresponding to the first slide 6111, the second slide 6112 and the third slide 6113. The slide structure 621 is an electric slide, which is obtained through purchase.

[0129] The roller assembly cooperates with the slide structure 621 and is used to connect the linkage assembly 63. The roller assembly includes a first roller 6221, a second roller 6222 and a fixed frame 6223, wherein the fixed frame has a first extension frame, a second extension frame, a third extension frame and a fourth extension frame. The first extension frame is connected to the first roller 6221, the second extension frame is connected to the second roller 6222, the third extension frame is connected to the linkage assembly 63, and the fourth extension frame is connected to the slide structure 621. In the step, a through groove 23 structure is correspondingly formed on the wall surface of the frame 2. When in use, the roller assembly moves in the through groove 23 and controls the movement of the built-in track assembly 61 through the linkage assembly 63. Furthermore, a plastic sheet 8 is connected to the through groove 23, and the plastic sheet 8 closes the through groove 23 to prevent the coating material in the first chamber 21 and the second chamber 22 from flowing out, and the first slide 6111, the second slide 6112 and the third slide 6113 are all formed on the plastic sheet 8.

[0130] Embodiment 9:

[0131] This embodiment provides a coating system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0132] The linkage component 63 includes:

[0133] Magnetic block 631, magnetic block 631 is arranged on pulley 612;

[0134] The electromagnetic block 632 is disposed on the third extension frame and corresponds to the magnetic block 631 .

[0135] It can be seen from the present embodiment that the linkage assembly 63 includes a magnetic block 631 and an electromagnetic block 632. The magnetic block 631 is mounted on the pulley 612, and the electromagnetic block 632 is mounted on the third extension frame. When in use, the movement of the pulley 612 is controlled by adsorbing the electromagnetic block 632, and the direction of the magnetic pole of the electromagnetic block 632 can be changed to control the movement direction of the pulley 612. Furthermore, there are 8 pairs of plastic thin plates, and the thin plates have little effect on magnetism.

[0136] Embodiment 10:

[0137] This embodiment provides a coating system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0138] The clamping assembly 64 includes:

[0139] A bottom plate 641, the bottom plate 641 is connected to the stabilizing frame 613;

[0140] The pressing plate 642 is arranged on the bottom plate 641 by bolts, and a rubber plate 643 with toothed protrusions is arranged at the lower side of the pressing plate 642.

[0141] It can be seen from this embodiment that the clamping assembly 64 clamps the backplane base film by controlling the gap between the pressure plate 642 and the bottom plate 641 through bolts, and the rubber plate 643 ensures a stable connection.

[0142] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A production process and coating system of a double-sided coated white board base film, characterized in that: include: S1, production process, the white backboard base film coating, bidirectional synchronous stretching, shaping, winding and slitting; S2, base film structure (1), the white backplane base film comprises a substrate layer (11), an inner coating layer (12) and an outer coating layer (13); S3, process requirements, the inner coating layer (12) and the outer coating layer (13) are formed at one time in the coating system; The inner coating layer (12) comprises fluorine-containing resin, acrylic resin, curing agent, matting powder, inorganic particles and organic solvent, and the outer coating layer (13) comprises fluorine-containing resin, curing agent, inorganic particles and organic solvent.

2. A coating system according to claim 1, characterized in that: The coating system includes: A frame (2), wherein a partition boss is arranged in the frame (2), and a first chamber (21) and a second chamber (22) are formed on both sides of the partition boss; A pre-coating device (3), wherein the pre-coating device (3) is arranged in the first chamber (21), a feeding end is arranged at the front end of the pre-coating device (3), and the pre-coating device (3) coats an inner coating layer (12) on the substrate layer (11); A post-coating device (4), wherein the post-coating device (4) is arranged in the second chamber (22), a discharge end is arranged at the rear end of the post-coating device (4), and the pre-coating device (3) coats an outer coating layer (13) on the substrate layer (11) based on the inner coating layer (12); A material receiving device (5), wherein the material receiving device (5) is arranged outside the feeding end and the discharging end and dries the backplane base film; A material guiding device is arranged in the frame (2) and guides the substrate layer (11) to pass through the front coating device (3) or the rear coating device (4).

3. A coating system according to claim 2, characterized in that: The pre-coating device (3) comprises: A nip roller (31), wherein a plurality of nip rollers (31) are disposed vertically in the first chamber (21); A first electric telescopic rod (32), wherein the first electric telescopic rod (32) connects the nip roller (31) to the first chamber (21); Wherein, the first electric telescopic rod (32) is arranged on the upper side of the frame (2), and the movable end of the first telescopic rod extends into the first chamber (21); Wherein, the post-coating device (4) has the same structure as the pre-coating device (3).

4. A coating system according to claim 3, characterized in that include: A residual material removal device, which is arranged on the partition protrusion and performs expected removal of the back plate base film; The residual material removal device includes: A second electric telescopic rod, the second electric telescopic rod being arranged on the frame (2) and having a movable end extending to the upper end of the partition protrusion; a third electric telescopic rod, the third electric telescopic rod being arranged on the partition protrusion and corresponding to the second electric telescopic rod; A wiping roller (73) is arranged on the movable ends of the second electric telescopic rod and the third electric telescopic rod.

5. A coating system according to claim 4, characterized in that: The material guiding device includes: A built-in track component (61), wherein the built-in track component (61) is arranged on the inner side of the frame (2); An external track assembly (62), wherein the external track assembly (62) is arranged outside the frame (2) and corresponds to the internal track assembly (61); A linkage assembly (63), wherein the linkage assembly (63) connects the internal track assembly (61) and the external track assembly (62) together so that they can move synchronously; A clamping assembly (64), wherein the clamping assembly (64) is arranged on the built-in track assembly (61).

6. A coating system according to claim 5, characterized in that: The material receiving device (5) comprises: A receiving roller (51), wherein the receiving roller (51) is arranged outside both the feeding end and the discharging end; A motor (52) is connected to the receiving roller (51).

7. A coating system according to claim 6, characterized in that: The built-in track assembly (61) comprises: The slide rail (611) includes a first slide rail (6111), a second slide rail (6112) and a third slide rail (6113), and is arranged on both sides of the frame (2). A pulley (612), wherein the pulley (612) is arranged on the slide rail (611); A stabilizing frame (613), wherein the stabilizing frame (613) is connected to the first pulley (612) and the second pulley (612), and the clamping assembly (64) is arranged on the stabilizing frame (613); Wherein, the linkage assembly (63) is arranged on the pulley (612).

8. A coating system according to claim 7, characterized in that: The external track assembly (62) includes: A slide structure (621), wherein the slide assembly is arranged on both sides of the frame (2) and corresponds to the slide rail (611); A roller assembly, wherein the roller comprises a first roller (6221), a second roller (6222) and a fixing frame (6223); Wherein, the fixed frame (6223) comprises a first extension frame, a second extension frame, a third extension frame and a fourth extension frame, the first extension frame is connected to the first roller (6221), the second extension frame is connected to the second roller (6222), the third extension frame is connected to the linkage assembly (63), and the fourth extension frame is connected to the slide structure (621); Wherein, the frame (2) is provided with a through groove (23) on the outer wall surface corresponding to the slide structure (621) and the slide rail (611), and the roller assembly is arranged in the through groove (23).

9. A coating system according to claim 8, characterized in that: The linkage component (63) comprises: A magnetic block (631), wherein the magnetic block (631) is disposed on both the first pulley (612) and the second pulley (612); The electromagnetic block (632) is arranged on the third extension frame and corresponds to the magnetic block (631).

10. A coating system according to claim 9, characterized in that: The clamping assembly (64) comprises: A bottom plate (641), wherein the bottom plate (641) is connected to the stabilizing frame (613); A pressure plate (642), wherein the pressure plate (642) is arranged on the bottom plate (641) by means of bolts, and a rubber plate (643) with toothed protrusions is arranged on the lower side of the pressure plate (642).

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