Coating equipment

Abstract

The utility model discloses coating equipment, which comprises an unwinding mechanism, a double-sided prime coat coating mechanism, a first drying oven, a first extrusion coating mechanism, a second drying oven, a second extrusion coating mechanism, a third drying oven and a winding mechanism which are sequentially arranged along a walking path of a base material, the double-sided prime coat coating mechanism is used for coating the A surface of a base material with carbon powder slurry to form an A-surface carbon powder slurry layer and coating the B surface of the base material with carbon powder slurry to form a B-surface carbon powder slurry layer, and the first drying oven is used for heating and drying the A-surface carbon powder slurry layer and the B-surface carbon powder slurry layer of the base material; the first extrusion coating mechanism is used for coating an A-side carbon powder slurry layer of a base material with conductive slurry to form an A-side conductive slurry layer, and the second extrusion coating mechanism is used for coating a B-side carbon powder slurry layer of the base material with the conductive slurry to form a B-side conductive slurry layer. According to the utility model, the production time is reduced, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coating, in particular to a coating device. Background Art

[0002] At present, the production of lithium battery pole pieces is generally completed by the double-sided primer coating equipment in the first workshop and the extrusion coating equipment in the second workshop. Among them, the double-sided primer coating equipment generally includes a double-sided primer unwinding mechanism, a first double-sided primer coating mechanism, a first double-sided primer coating oven, a second double-sided primer coating mechanism, a second double-sided primer coating oven and a double-sided primer winding mechanism, and the extrusion coating equipment generally includes an extrusion coating unwinding mechanism, a first extrusion coating mechanism, a first extrusion coating oven, a second extrusion coating mechanism, a second extrusion coating oven and an extrusion coating winding mechanism. In actual application, the carbon powder slurry is first coated on the substrate (the substrate is, for example, copper foil, Aluminum foil, etc.) is coated on the A side and B side of the substrate to form the A side carbon powder slurry layer and the B side carbon powder slurry layer respectively. The formed A side carbon powder slurry layer and the B side carbon powder slurry layer can increase the adhesion of the conductive slurry applied subsequently, thereby improving the coating quality. The substrate coated by the double-sided primer coating equipment is then transferred to the second workshop, and then the conductive slurry is applied to the A side carbon powder slurry layer and the B side carbon powder slurry layer of the substrate by the extrusion coating equipment to form the A side conductive slurry layer and the B side conductive slurry layer respectively, thus completing the production of the electrode. Since the production of the electrode is completed by two devices, a transfer operation is required between the two, which increases production time, reduces production efficiency, and increases production costs. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a coating device, which reduces production time, improves production efficiency and reduces production costs.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A coating device comprises an unwinding mechanism, a double-sided primer coating mechanism, a first oven, a first extrusion coating mechanism, a second oven, a second extrusion coating mechanism, a third oven and a winding mechanism, which are sequentially arranged along a walking path of a substrate. The unwinding mechanism is used to unwind the substrate, the double-sided primer coating mechanism is used to coat the carbon powder slurry on the A side of the substrate to form an A side carbon powder slurry layer and to coat the carbon powder slurry on the B side of the substrate to form a B side carbon powder slurry layer, the first oven is used to carbonize the A side of the substrate, and the second oven is used to coat the carbon powder slurry on the B side of the substrate to form a B side carbon powder slurry layer. The powder slurry layer and the B-side carbon powder slurry layer are heated and dried, the first extrusion coating mechanism is used to apply the conductive slurry to the carbon powder slurry layer on the A side of the substrate to form the A-side conductive slurry layer, the second oven is used to heat and dry the A-side conductive slurry layer of the substrate, the second extrusion coating mechanism is used to apply the conductive slurry to the carbon powder slurry layer on the B side of the substrate to form the B-side conductive slurry layer, the third oven is used to heat and dry the B-side conductive slurry layer of the substrate, and the winding mechanism is used to wind the substrate.

[0006] As a preferred technical solution, the double-sided primer coating mechanism includes a first version roller, a first material box, an approach roller, two coating cylinders, a second version roller, a second material box, a first support roller and a second support roller, one end of the first version roller is connected to the first version roller motor, the first version roller is partially located in the first material trough of the first material box, the first material box is provided with a first feed port connected to the first material trough, the approach roller is located above the first version roller, the two coating cylinders are used to drive the approach roller to move toward or away from the first version roller, one end of the second version roller is connected to the second version roller motor, the second version roller is partially located in the second material trough in the second material box, the second material box is provided with a second feed port connected to the second material trough, the first support roller and the second support roller are arranged in sequence between the first version roller and the second version roller along the walking path of the substrate.

[0007] As a preferred technical solution, the first extrusion coating mechanism includes an A-side coating roller, an A-side coating die and an A-side linear module, the A-side coating die is opposite to the A-side coating roller, the A-side coating die is arranged at the top of the A-side linear module, and the A-side linear module is used to drive the A-side coating die to move toward or away from the A-side coating roller.

[0008] As a preferred technical solution, the second extrusion coating mechanism includes a B-side coating roller, a B-side coating die and a B-side linear module, the B-side coating die is opposite to the B-side coating roller, the B-side coating die is arranged at the top of the B-side linear module, and the B-side linear module is used to drive the B-side coating die to move toward or away from the B-side coating roller.

[0009] As a preferred technical solution, it also includes a corona mechanism and a first correcting mechanism that are arranged in sequence between the unwinding mechanism and the double-sided primer coating mechanism along the walking path of the substrate. The corona mechanism is used to perform corona treatment on the A side and the B side of the substrate, and the first correcting mechanism is used to correct the substrate before the carbon powder slurry is coated on the A side and the B side of the substrate through the double-sided primer coating mechanism.

[0010] As a preferred technical solution, it also includes a first traction mechanism, a first thickness gauge and a second correction mechanism which are arranged in sequence between the first oven and the first extrusion coating mechanism along the walking path of the substrate, the first traction mechanism is used to cool the substrate, the first thickness gauge is used to measure the thickness of the substrate, and the second correction mechanism is used to correct the substrate before the conductive slurry is coated on the carbon powder slurry layer on the A side of the substrate through the first extrusion coating mechanism.

[0011] As a preferred technical solution, the method further includes a second thickness gauge provided between the first extrusion coating mechanism and the second oven along the travel path of the substrate, wherein the second thickness gauge is used to measure the thickness of the substrate.

[0012] As a preferred technical solution, it also includes a third correcting mechanism, a second traction mechanism, a third thickness gauge and a fourth correcting mechanism, which are arranged in sequence between the second oven and the second extrusion coating mechanism along the walking path of the substrate. The third correcting mechanism corrects the substrate after the conductive paste layer on the A side of the substrate is heated and dried by the second oven. The second traction mechanism is used to cool the substrate. The third thickness gauge is used to measure the thickness of the substrate. The fourth correcting mechanism is used to correct the substrate before the conductive paste is coated on the carbon powder paste layer on the B side of the substrate by the second extrusion coating mechanism.

[0013] As a preferred technical solution, it also includes a climbing mechanism and a fourth thickness gauge which are sequentially arranged between the second extrusion coating mechanism and the third oven along the walking path of the substrate, the climbing mechanism is used to transport the substrate, and the fourth thickness gauge is used to measure the thickness of the substrate.

[0014] As a preferred technical solution, it also includes a fifth correcting mechanism, a third traction mechanism, a roller mechanism, a fifth thickness gauge and a sixth correcting mechanism, which are arranged in sequence between the third oven and the winding mechanism along the walking path of the substrate. The fifth correcting mechanism is used to correct the substrate after the conductive paste layer on the B side of the substrate is heated and dried by the third oven, the third traction mechanism is used to cool the substrate, the roller mechanism is used to support the substrate, the fifth thickness gauge is used to measure the thickness of the substrate, and the sixth correcting mechanism is used to correct the substrate before the substrate is wound by the winding mechanism.

[0015] The beneficial effects of the present invention are as follows: the present invention is provided with an unwinding mechanism, a double-sided primer coating mechanism, a first oven, a first extrusion coating mechanism, a second oven, a second extrusion coating mechanism, a third oven and a winding mechanism. The unwinding mechanism can unwind the substrate, the double-sided primer coating mechanism can coat the carbon powder slurry on the A side of the substrate to form an A side carbon powder slurry layer, and the carbon powder slurry can be coated on the B side of the substrate to form a B side carbon powder slurry layer. The first oven can heat and dry the A side carbon powder slurry layer and the B side carbon powder slurry layer of the substrate. The first extrusion coating mechanism can coat the conductive slurry on the substrate. The conductive paste layer on the A side of the substrate is formed by the carbon powder slurry layer on the A side, and the conductive paste layer on the A side of the substrate can be heated and dried by the second oven. The conductive paste layer on the B side of the substrate can be coated on the carbon powder slurry layer on the B side of the substrate by the second extrusion coating mechanism to form the conductive paste layer on the B side. The conductive paste layer on the B side of the substrate can be heated and dried by the third oven, and the substrate can be wound up by the winding mechanism. In this way, the production of the electrode can be completed. Compared with the existing technology, the production of the electrode does not need to be completed by two devices, and no transfer operation is required, which reduces production time, reduces the demand for factory space, improves production efficiency, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a structural diagram of a coating device provided by one embodiment of the present utility model;

[0018] Figure 2 yes Figure 1 A schematic structural diagram of the unwinding mechanism, corona mechanism and first deviation-correcting mechanism of the coating device shown;

[0019] Figure 3 yes Figure 1 A schematic structural diagram of a double-sided primer coating mechanism of the coating equipment shown;

[0020] Figure 4 yes Figure 1 A schematic structural diagram of the first oven, the first traction mechanism, the first thickness gauge and the second deviation-correcting mechanism of the coating equipment shown;

[0021] Figure 5 yes Figure 1 A schematic structural diagram of the first extrusion coating mechanism, the second thickness gauge, the second oven, the third deviation-correcting mechanism, and the second traction mechanism of the coating equipment shown;

[0022] Figure 6 yes Figure 1 A schematic structural diagram of the third thickness gauge, the fourth deviation-correcting mechanism, and the second extrusion coating mechanism of the coating device shown;

[0023] Figure 7 yes Figure 1 A schematic diagram of the structure of the climbing mechanism of the coating equipment and the fourth thickness gauge;

[0024] Figure 8 yes Figure 1 A schematic structural diagram of the fifth deviation-correcting mechanism and the third traction mechanism of the coating device shown;

[0025] Figure 9 yes Figure 1 A schematic structural diagram of the roller mechanism and the fifth thickness gauge of the coating equipment shown;

[0026] Figure 10 yes Figure 1 The schematic diagram of the structure of the sixth deviation-correcting mechanism and the winding mechanism of the coating equipment is shown. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technical personnel in this field without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the present invention can be combined interactively without conflicting with each other.

[0028] Please refer to Figure 1 An embodiment of the present invention provides a coating device, including an unwinding mechanism 10, a corona mechanism 20, a first correcting mechanism 30, a double-sided primer coating mechanism 40, a first drying oven 50, a first traction mechanism 60, a first thickness gauge 70, a second correcting mechanism 80, a first extrusion coating mechanism 90, a second thickness gauge 100, a second drying oven 110, a third correcting mechanism 120, a second traction mechanism 130, a third thickness gauge 140, a fourth correcting mechanism 150, a second extrusion coating mechanism 160, a climbing mechanism 170, a fourth thickness gauge 180, a third drying oven 190, a fifth correcting mechanism 200, a third traction mechanism 210, a roller mechanism 220, a fifth thickness gauge 230, a sixth correcting mechanism 240 and a winding mechanism 250, which are arranged in sequence along the walking path of the substrate.

[0029] Combine Figure 2As shown, the unwinding mechanism 10 is used to unwind the substrate. It includes an unwinding shaft 11 and an unwinding motor. One end of the unwinding shaft 11 is connected to the end of the output shaft of the unwinding motor, which drives the unwinding shaft 11 to rotate. In actual use, after the substrate is mounted on the unwinding shaft 11, the unwinding motor drives the unwinding shaft 11 to rotate, thereby unwinding the substrate.

[0030] The corona mechanism 20 is located to the right of the unwinding mechanism 10. It is used to perform corona treatment on the A and B surfaces of the substrate to improve their adhesion. The A surface of the substrate is, for example, the front side of the substrate, and the B surface is, for example, the back side of the substrate. The corona mechanism 20 includes a first corona roller assembly and a second corona roller assembly. The first corona roller assembly is located above the second corona roller assembly, and the two are offset from each other. The first corona roller assembly includes a first corona roller 21, a first discharge frame, and a plurality of first discharge electrodes. The first discharge frame is located to the right of the first corona roller 21. An opening is provided on one side of the first discharge frame near the first corona roller 21. A plurality of first discharge electrodes are disposed in the opening of the first discharge frame and are spaced in an arc around the first corona roller 21. A first gap is defined between the plurality of first discharge electrodes and the first corona roller 21 for the substrate to pass through. The second corona roller assembly includes a second corona roller 22, a second discharge frame, and a plurality of second discharge electrodes. The second discharge frame is positioned to the left of the second corona roller 22. An opening is provided on one side of the second discharge frame, adjacent to the second corona roller 22. Multiple second discharge electrodes are positioned within the opening and spaced apart in an arc around the second corona roller 22. A second gap is defined between the multiple second discharge electrodes and the second corona roller 22 for the substrate to pass through. One end of each of the multiple first discharge electrodes and one end of each of the multiple second discharge electrodes are electrically connected to the transformer.

[0031] In actual application, the unrolled substrate first passes around the right side of the first corona roller 21 and passes through the first gap, and then passes around the left side of the second corona roller 22 and passes through the second gap. At this time, multiple first discharge electrodes are in contact with the A side of the substrate, and multiple second discharge electrodes are in contact with the B side of the substrate. The first corona roller 21 and the second corona roller 22 can support the substrate respectively, and the multiple first discharge electrodes can discharge the current boosted by the transformer, so that the A side of the substrate can be corona treated. The multiple second discharge electrodes can discharge the current boosted by the transformer, so that the B side of the substrate can be corona treated.

[0032] In this embodiment, there are two first corona roller assemblies and two second corona roller assemblies, and the two first corona roller assemblies are spaced apart from each other. It can be understood that the number of first corona roller assemblies and second corona roller assemblies can be set according to actual conditions. The number of first discharge electrodes and second discharge electrodes can also be set according to actual conditions.

[0033] The first deflection correction mechanism 30 is located to the right of the corona mechanism 20. The first deflection correction mechanism 30 is used to correct the substrate before the carbon powder slurry is applied to the A side and the B side of the substrate by the double-sided primer coating mechanism 40 to ensure the quality of the coating. The first deflection correction mechanism 30 includes a first deflection correction frame 31, a first deflection correction linear motor, a first deflection correction top plate 32 and two first deflection correction rollers 33. The first deflection correction linear motor is arranged in the first deflection correction frame 31 and the deflection correction motor part protrudes from the top of the first deflection correction frame 31. The first deflection correction top plate 32 is located above the first deflection correction frame 31 and is connected to the first deflection correction linear motor. The two first deflection correction rollers 33 are arranged in parallel to each other. The two ends of the first deflection correction roller 33 are rotatably arranged at the top of the first deflection correction top plate 32 through two bearing seats. The first deflection correction linear motor is used to drive the first deflection correction top plate 32 to move back and forth relative to the first deflection correction frame 31, thereby driving the two first deflection correction rollers 33 to move back and forth.

[0034] A first deflection correction sensor is provided on one side of the first deflection correction frame 31. The first deflection correction sensor is used to detect whether one side of the substrate is deflected. The first deflection correction sensor is a U-shaped photoelectric sensor. In actual use, the substrate passes over the two first deflection correction rollers 33, and one side of the substrate passes through the inside of the first deflection correction sensor. When the first deflection correction sensor detects that one side of the substrate is deflected, for example, backward, the first deflection correction linear motor drives the two first deflection correction rollers 33 forward, thereby correcting the substrate. When the first deflection correction sensor detects that one side of the substrate is deflected, for example, forward, the first deflection correction linear motor drives the two first deflection correction rollers 33 backward, thereby correcting the substrate.

[0035] Combine Figure 3 As shown, the double-sided primer coating mechanism 40 is located to the right of the first correction mechanism 30. The double-sided primer coating mechanism 40 is used to coat the carbon powder slurry onto the A side of the substrate to form an A side carbon powder slurry layer and to coat the carbon powder slurry onto the B side of the substrate to form a B side carbon powder slurry layer. The formed A side carbon powder slurry layer and B side carbon powder slurry layer can improve the adhesion of the subsequently coated conductive slurry, thereby improving the coating quality.

[0036] The double-sided primer coating mechanism 40 includes a first plate roller 41, a first material box 43, an approach roller 44, two coating cylinders 42, a second plate roller 45, a second material box 46, a first support roller 47, and a second support roller 48. One end of the first plate roller 41 is connected to a first plate roller motor, which drives the first plate roller 41. The first material box 43 is tilted to the right, and the first plate roller 41 is partially located in the first material trough of the first material box 43. The first material box 43 has a first feed port connected to the first material trough. Two approach rollers 44 are located above the first plate roller 41. Their ends are rotatably mounted on two coating side plates 441 via two bearing blocks. The two coating side plates 441 are connected to the ends of the output shafts of the two coating cylinders 42. The two coating cylinders 42 drive the two coating side plates 441 up and down, respectively, thereby moving the approach rollers toward or away from the first plate roller 41. By moving the approach rollers 44 toward the first plate roller 41, the substrate is pressed against the first plate roller 41. A second plate roller 45 is located above the two coating cylinders 42. One end of the second plate roller 45 is connected to the second plate roller motor, which drives the second plate roller 45. A second material box 46 is tilted to the left, with the second plate roller 45 partially located within the second trough of the second material box 46. The second material box 46 has a second feed port connected to the second trough. Both the first and second feed ports are connected to a feeding device. The first support roller 47 and the second support roller 48 are sequentially arranged between the first printing roller 41 and the second printing roller 45 along the traveling path of the substrate.

[0037] In actual application, the substrate first passes between the first version roller 41 and the approach roller 44, then passes around from the left of the first support roller 47, passes around above the second support roller 48, and then passes around from above the second version roller 45. The substrate can be supported by the first support roller 47 and the second support roller 48. The carbon powder slurry can be transported to the first material trough of the first material box 43 through the first feed port and to the second material trough of the second material box 46 through the second feed port by the feeding device. The approach roller 44 is driven by the two coating cylinders 42 to move closer to the first version roller 41. The first roller 41 moves in the direction of the first roller 41, so that the substrate can be pressed onto the first roller 41 through the approach roller 44, and the first roller motor drives the first roller 41 to rotate, for example, in a clockwise direction, so that the first roller 41 can take up the carbon powder slurry in the first material tank and apply the carbon powder slurry to the A side of the substrate to form an A side carbon powder slurry layer, and the second roller motor drives the second roller 45 to rotate, so that the second roller 45 can take up the carbon powder slurry in the second material tank and apply the carbon powder slurry to the B side of the substrate to form a B side carbon powder slurry layer.

[0038] Combine Figure 4As shown, the first oven 50 is located to the right of the double-sided primer coating mechanism 40. The first oven 50 is used to heat and dry the carbon powder slurry layer on side A and side B of the substrate. The first oven 50 is a conventional structure, and its structure is not further described here. In actual use, the substrate passes through the first oven 50, thereby heating and drying the carbon powder slurry layer on side A and side B of the substrate.

[0039] The first traction mechanism 60 is located to the right of the first oven 50 and is used to cool the substrate. The first traction mechanism 60 includes a first cooling roller 61. In practice, after exiting the first oven 50, the substrate passes around the right side of the first cooling roller 61, where it is cooled.

[0040] A first thickness gauge 70 is located to the right of the first traction mechanism 60 and is used to measure the thickness of the substrate. The first thickness gauge 70 is a conventional non-contact thickness gauge. In actual use, the substrate passes through the first thickness gauge 70 to measure the substrate's thickness.

[0041] The second deflection correction mechanism 80 is located to the right of the first thickness gauge 70. It is used to correct the substrate's deflection before the conductive paste is applied to the carbon powder paste layer on side A of the substrate by the first extrusion coating mechanism 90 to ensure coating quality. The structure of the second deflection correction mechanism 80 is identical to that of the first deflection correction mechanism 30 and will not be further described herein.

[0042] Combine Figure 5 As shown, the first extrusion coating mechanism 90 is located to the right of the second correction mechanism 80. The first extrusion coating mechanism 90 is used to apply the conductive paste to the carbon powder paste layer on the A side of the substrate to form the A side conductive paste layer. The first extrusion coating mechanism 90 includes an A side coating roller 91, an A side coating die 92, and an A side linear module. The A side coating die 92 is located at the lower left of the A side coating roller 91 and is opposite to the A side coating roller 91. The A side coating die 92 is set at the top of the A side linear module. The A side linear module is a wire rod linear module. The A side linear module is used to drive the A side coating die 92 to move toward or away from the A side coating roller 91. In actual application, the substrate passes around the left side of the A-side coating roller 91. At this time, the carbon powder slurry layer on the A-side of the substrate faces the A-side coating die 92. The substrate can be supported by the A-side coating roller 91, and the A-side coating die 92 can be driven by the A-side linear module to move toward the A-side coating roller 91 to the coating position. In this way, the conductive slurry can be coated on the carbon powder slurry layer on the A-side of the substrate through the A-side coating die 92 to form an A-side conductive slurry layer. The A-side carbon powder slurry layer can improve the adhesion of the conductive slurry, thereby improving the coating quality.

[0043] The second thickness gauge 100 is located to the right of the first extrusion coating mechanism 90 and is used to measure the thickness of the substrate. The second thickness gauge 100 is a conventional non-contact thickness gauge. In actual use, the substrate passes through the second thickness gauge 100, and the thickness of the substrate is measured by the second thickness gauge 100.

[0044] The second oven 110 is located to the right of the second thickness gauge 100. It is used to heat and dry the conductive paste layer on side A of the substrate. The second oven 110 is a conventional structure, and its structure is not described here. In actual use, the substrate passes through the second oven 110, where the conductive paste layer on side A of the substrate is heated and dried.

[0045] The third deflection correction mechanism 120 is located to the right of the second drying oven 110. The third deflection correction mechanism 120 is used to correct the substrate after the conductive paste layer on the A side of the substrate is heated and dried by the second drying oven 110. The third deflection correction mechanism 120 includes a second deflection correction frame 121, a second deflection correction linear motor 123, a second deflection correction top plate 122 and a second deflection correction roller 125. The second deflection correction linear motor 123 is arranged at the top of the second deflection correction frame 121, and the second deflection correction top plate 122 is located above the second deflection correction linear motor 123 and is connected to the second deflection correction linear motor 123. The top of the second deflection correction top plate 122 is provided with two deflection correction mounting plates arranged in a front-to-back relationship, and the two ends of the second deflection correction roller 125 are rotatably arranged on the two deflection correction mounting plates through two bearing seats. The second deflection correction linear motor 123 is used to drive the second deflection correction top plate 122 to move back and forth, thereby driving the two deflection correction mounting plates to move back and forth, and then driving the second deflection correction roller 125 to move back and forth.

[0046] A second deflection correction sensor is provided on one side of the second deflection correction frame 121. The second deflection correction sensor is used to detect whether one side of the substrate is deflected. The second deflection correction sensor is a U-shaped photoelectric sensor. In actual use, the substrate passes under the second deflection correction roller 125, and one side of the substrate passes through the inside of the second deflection correction sensor. When the second deflection correction sensor detects that one side of the substrate is deflected, for example, backward, the second deflection correction roller 125 is driven forward by the second deflection correction linear motor 123, thereby correcting the deflection of the substrate. When the second deflection correction sensor detects that one side of the substrate is deflected, for example, forward, the second deflection correction roller 125 is driven backward by the second deflection correction linear motor 123, thereby correcting the deflection of the substrate.

[0047] The second traction mechanism 130 is located to the right of the third deflection-correcting mechanism 120 and is used to cool the substrate. It includes a second cooling roller 131 and a third cooling roller 132. The second cooling roller 131 is located below the third cooling roller 132. In practice, the substrate first passes around the left side of the second cooling roller 131 and then around the right side of the third cooling roller 132. The second and third cooling rollers 131 and 132 cool the substrate.

[0048] Combine Figure 6 As shown, third thickness gauge 140 is located to the right of second traction mechanism 130. Third thickness gauge 140 is used to measure the thickness of the substrate. Third thickness gauge 140 is a conventional non-contact thickness gauge. In actual use, the substrate passes through third thickness gauge 140, and the substrate thickness can be measured by third thickness gauge 140.

[0049] The fourth deflection correction mechanism 150 is located to the right of the third thickness gauge 140. It is used to correct the substrate before the conductive paste is applied to the carbon powder paste layer on side B of the substrate by the second extrusion coating mechanism 160. The fourth deflection correction mechanism 150 has the same structure as the first deflection correction mechanism 30, and its structure is not further described here.

[0050] The second extrusion coating mechanism 160 is located to the right of the fourth correction mechanism 150. The second extrusion coating mechanism 160 is used to apply the conductive paste to the carbon powder paste layer on the B side of the substrate to form a conductive paste layer on the B side. The second extrusion coating mechanism 160 includes a B side coating roller 161, a B side coating die head 162, and a B side linear module. The B side coating die head 162 is located to the lower right of the B side coating roller 161 and is opposite to the B side coating roller 161. The B side coating die head 162 is set at the top of the B side linear module. The B side linear module is a wire linear module. The B side linear module is used to drive the B side coating die head 162 to move toward or away from the B side coating roller 161. In actual application, the substrate passes around from under the B-side coating roller 161. At this time, the B-side carbon powder slurry layer of the substrate faces the B-side coating die 162. The substrate can be supported by the B-side coating roller 161, and the B-side coating die 162 can be driven by the B-side linear module to move toward the B-side coating roller 161 to the coating position. In this way, the conductive slurry can be coated on the B-side carbon powder slurry layer of the substrate through the B-side coating die 162 to form a B-side conductive slurry layer. The B-side carbon powder slurry layer can improve the adhesion of the conductive slurry, thereby improving the coating quality.

[0051] Combine Figure 7As shown, a climbing mechanism 170 is located above the fourth deflection-correcting mechanism 150, the third thickness gauge 140, the second traction mechanism 130, and the second extrusion coating mechanism 160. Climbing mechanism 170 is used to convey the substrate. Climbing mechanism 170 includes a plurality of conveyor rollers 171 arranged at intervals. These conveyor rollers 171 are used to convey the substrate, forming an arc-shaped conveying path. The number of conveyor rollers 171 can be adjusted based on actual needs.

[0052] The fourth thickness gauge 180 is located to the left of the climbing mechanism 170 and above the third deflection-correcting mechanism 120. It is used to measure the thickness of the substrate. It is a conventional non-contact thickness gauge. In actual use, the substrate passes through the fourth thickness gauge 180, and the thickness of the substrate is measured by the fourth thickness gauge 180.

[0053] The third oven 190 is located to the left of the fourth thickness gauge 180 and above the second oven 110. The third oven 190 is used to heat and dry the conductive paste layer on the B side of the substrate. The third oven 190 has a conventional structure, and its structure is not further described here. In actual use, the substrate passes through the third oven 190, thereby heating and drying the conductive paste layer on the B side of the substrate.

[0054] Combine Figure 8 As shown, the fifth deflection correction mechanism 200 is located to the left of the third drying oven 190 and above the second thickness gauge 100. The fifth deflection correction mechanism 200 is used to correct the substrate after the conductive paste layer on the B side of the substrate is heated and dried in the third drying oven 190. The fifth deflection correction mechanism 200 has the same structure as the third deflection correction mechanism 120 and is arranged bilaterally symmetrically. The structure of the fifth deflection correction mechanism 200 is not further described here.

[0055] The third traction mechanism 210 is located to the left of the fifth deflection-correcting mechanism 200 and above the first extrusion coating mechanism 90. It is used to cool the substrate. The third traction mechanism 210 includes a fourth cooling roller 211 and a fifth cooling roller 212. The fourth cooling roller 211 is located below the fifth cooling roller 212. In practice, the substrate first passes around the right side of the fourth cooling roller 211 and then around the left side of the fifth cooling roller 212. The fourth and fifth cooling rollers 211 and 212 cool the substrate.

[0056] Combine Figure 9As shown, the roller mechanism 220 is located to the left of the third traction mechanism 210 and above the corona mechanism 20, the first deflection correction mechanism 30, the double-sided primer coating mechanism 40, the first drying oven 50, the first traction mechanism 60, the first thickness gauge 70, and the second deflection correction mechanism 80. The roller mechanism 220 is used to support the substrate. The roller mechanism 220 includes a plurality of upper rollers 221 and a plurality of lower rollers 222. The upper rollers 221 are located above the lower rollers 222 and are staggered. The upper rollers 221 and the lower rollers 222 are respectively used to support the substrate. The number of upper rollers 221 and lower rollers 222 can be adjusted according to actual conditions.

[0057] The fifth thickness gauge 230 is located to the left of the roller mechanism 220 and above the unwinding mechanism 10. It is used to measure the thickness of the substrate. The fifth thickness gauge 230 is a conventional non-contact thickness gauge. In actual use, the substrate passes through the fifth thickness gauge 230, and the thickness of the substrate is measured by the fifth thickness gauge 230.

[0058] Combine Figure 10 As shown, the sixth deflection correction mechanism 240 is located to the left of the fifth thickness gauge 230 and above the unwinding mechanism 10. The sixth deflection correction mechanism 240 is used to correct the deflection of the substrate before it is rewound by the rewinding mechanism 250 to ensure neat rewinding. The structure of the sixth deflection correction mechanism 240 is identical to that of the first deflection correction mechanism 30, and the structure of the sixth deflection correction mechanism 240 is not further described here.

[0059] The reeling mechanism 250 is used to reel the substrate. Located below the sixth deflection-correcting mechanism 240 and to the left of the unwinding mechanism 10, the reeling mechanism 250 comprises a reeling shaft 251 and a reeling motor. One end of the reeling shaft 251 is connected to the end of the output shaft of the reeling motor, which drives the reeling shaft 251 to rotate. In practice, after the sixth deflection-correcting mechanism 240 corrects the substrate's deflection, the reeling shaft 251 rotates to reel the substrate, completing the production of the electrode sheet.

[0060] The utility model is provided with an unwinding mechanism 10, a double-sided primer coating mechanism 40, a first oven 50, a first extrusion coating mechanism 90, a second oven 110, a second extrusion coating mechanism 160, a third oven 190 and a winding mechanism 250. The unwinding mechanism 10 can unwind the substrate, the double-sided primer coating mechanism 40 can apply the carbon powder slurry to the A side of the substrate to form an A side carbon powder slurry layer, and the carbon powder slurry can be applied to the B side of the substrate to form a B side carbon powder slurry layer. The first oven 50 can heat and dry the A side carbon powder slurry layer and the B side carbon powder slurry layer of the substrate, and the first extrusion coating mechanism 90 can apply the conductive slurry to the substrate. A conductive paste layer is formed on the carbon powder slurry layer on the A side of the substrate. The conductive paste layer on the A side of the substrate can be heated and dried by the second oven 110. The conductive paste layer can be coated on the carbon powder slurry layer on the B side of the substrate by the second extrusion coating mechanism 160 to form a conductive paste layer on the B side of the substrate. The conductive paste layer on the B side of the substrate can be heated and dried by the third oven 190. The substrate can be wound up by the winding mechanism 250. In this way, the production of the electrode can be completed. Compared with the existing technology, the production of the electrode does not need to be completed by two devices, and no transfer operation is required, which reduces production time, reduces the demand for factory space, improves production efficiency, and reduces production costs.

[0061] In actual application, the present invention can also be used as a primer coating device for coating the A side and B side of the substrate with conductive paste respectively. During the specific coating, it is only necessary to control the first extrusion coating mechanism 90, the second oven 110, the third extrusion coating mechanism 160, and the third oven 190 to not operate.

[0062] In practical application, the present invention can also be used as an extrusion coating device for coating the conductive paste on the A side and the B side of the substrate respectively. During coating, it is only necessary to control the double-sided primer coating mechanism 40 and the first oven 50 to be inactive.

[0063] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A coating device, characterized in that, The invention comprises an unwinding mechanism, a double-sided primer coating mechanism, a first oven, a first extrusion coating mechanism, a second oven, a second extrusion coating mechanism, a third oven and a winding mechanism, which are sequentially arranged along the walking path of the substrate. The unwinding mechanism is used to unwind the substrate. The double-sided primer coating mechanism is used to apply the carbon powder slurry to the A side of the substrate to form an A side carbon powder slurry layer and to apply the carbon powder slurry to the B side of the substrate to form a B side carbon powder slurry layer. The first oven is used to apply the carbon powder slurry layer on the A side of the substrate. , the carbon powder slurry layer on the B side is heated and dried, the first extrusion coating mechanism is used to apply the conductive slurry to the carbon powder slurry layer on the A side of the substrate to form the conductive slurry layer on the A side, the second oven is used to heat and dry the conductive slurry layer on the A side of the substrate, the second extrusion coating mechanism is used to apply the conductive slurry to the carbon powder slurry layer on the B side of the substrate to form the conductive slurry layer on the B side, the third oven is used to heat and dry the conductive slurry layer on the B side of the substrate, and the winding mechanism is used to wind up the substrate.

2. The coating device according to claim 1, characterized in that The double-sided primer coating mechanism includes a first version roller, a first material box, an approach roller, two coating cylinders, a second version roller, a second material box, a first support roller and a second support roller. One end of the first version roller is connected to the first version roller motor, and the first version roller is partially located in the first material trough of the first material box. The first material box is provided with a first feed port connected to the first material trough. The approach roller is located above the first version roller. The two coating cylinders are used to drive the approach roller to move toward or away from the first version roller. One end of the second version roller is connected to the second version roller motor, and the second version roller is partially located in the second material trough in the second material box. The second material box is provided with a second feed port connected to the second material trough. The first support roller and the second support roller are arranged in sequence between the first version roller and the second version roller along the walking path of the substrate.

3. The coating device according to claim 1, characterized in that The first extrusion coating mechanism includes an A-side coating roller, an A-side coating die and an A-side linear module. The A-side coating die is opposite to the A-side coating roller. The A-side coating die is arranged at the top of the A-side linear module. The A-side linear module is used to drive the A-side coating die to move toward or away from the A-side coating roller.

4. The coating device according to claim 1, characterized in that The second extrusion coating mechanism includes a B-side coating roller, a B-side coating die and a B-side linear module. The B-side coating die is opposite to the B-side coating roller. The B-side coating die is arranged at the top of the B-side linear module. The B-side linear module is used to drive the B-side coating die to move toward or away from the B-side coating roller.

5. The coating device according to claim 1, characterized in that It also includes a corona mechanism and a first correcting mechanism which are arranged in sequence between the unwinding mechanism and the double-sided primer coating mechanism along the walking path of the substrate. The corona mechanism is used to perform corona treatment on the A side and the B side of the substrate. The first correcting mechanism is used to correct the substrate before the carbon powder slurry is coated on the A side and the B side of the substrate by the double-sided primer coating mechanism.

6. The coating device according to claim 1, characterized in that It also includes a first traction mechanism, a first thickness gauge and a second correcting mechanism, which are arranged in sequence between the first oven and the first extrusion coating mechanism along the walking path of the substrate. The first traction mechanism is used to cool the substrate, the first thickness gauge is used to measure the thickness of the substrate, and the second correcting mechanism is used to correct the substrate before the conductive slurry is coated on the carbon powder slurry layer on the A side of the substrate through the first extrusion coating mechanism.

7. The coating device according to claim 1, characterized in that The invention also includes a second thickness gauge which is arranged between the first extrusion coating mechanism and the second oven along the travel path of the substrate, and the second thickness gauge is used to measure the thickness of the substrate.

8. The coating device according to claim 1, characterized in that It also includes a third correcting mechanism, a second traction mechanism, a third thickness gauge and a fourth correcting mechanism, which are arranged in sequence between the second oven and the second extrusion coating mechanism along the walking path of the substrate. The third correcting mechanism corrects the substrate after the conductive paste layer on the A side of the substrate is heated and dried by the second oven. The second traction mechanism is used to cool the substrate. The third thickness gauge is used to measure the thickness of the substrate. The fourth correcting mechanism is used to correct the substrate before the conductive paste is coated on the carbon powder paste layer on the B side of the substrate by the second extrusion coating mechanism.

9. The coating device according to claim 1, characterized in that It also includes a climbing mechanism and a fourth thickness gauge which are sequentially arranged between the second extrusion coating mechanism and the third oven along the walking path of the substrate. The climbing mechanism is used to transport the substrate, and the fourth thickness gauge is used to measure the thickness of the substrate.

10. The coating device according to claim 1, characterized in that It also includes a fifth correcting mechanism, a third traction mechanism, a roller mechanism, a fifth thickness gauge and a sixth correcting mechanism, which are arranged in sequence between the third oven and the winding mechanism along the walking path of the substrate. The fifth correcting mechanism is used to correct the substrate after the conductive paste layer on the B side of the substrate is heated and dried by the third oven, the third traction mechanism is used to cool the substrate, the roller mechanism is used to support the substrate, the fifth thickness gauge is used to measure the thickness of the substrate, and the sixth correcting mechanism is used to correct the substrate before the substrate is wound by the winding mechanism.

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