Electrode plate coating processing equipment and method

Abstract

The invention discloses electrode plate coating processing equipment and method.In the electrode plate coating processing equipment, a feeding unit is used for positioning, placing and adjusting the position of an electrode plate so that a two-finger rotating clamping jaw can clamp the electrode plate conveniently, the two-finger rotating clamping jaw in a conveying unit is used for replacing manual clamping and overturning of the electrode plate, and a sliding rail and a trolley replace manual transferring of the electrode plate; the conveying unit is matched with the preheating unit, the drying unit, the brushing unit and the discharging unit to replace manual work to complete preheating, brushing, drying and discharging operation in electrode plate coating processing, the whole process only needs to manually place an electrode plate on a bracket and can be replaced by a mechanical arm, and the automatic development trend of production and manufacturing is met; the problem that the labor intensity is high due to the fact that manual operation is adopted for electrode plate coating processing at present can be effectively solved, the consistency of preheating and drying time of the electrode plate and the thickness of the coating can be guaranteed, and the electrode plate coating processing quality can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrode sheet production, and in particular relates to an electrode sheet coating processing device and method. Background Art

[0002] Electrode sheets are widely used in fields such as battery and heater manufacturing and water electrolysis process. In order to improve the stability of battery charge and discharge cycles, the heat transfer performance of heaters or the electrolysis efficiency, it is necessary to brush corresponding coatings on the electrode sheets to process a coating with corresponding effects on the surface of the electrode sheets.

[0003] Now need to Figure 1 The surface of the electrode sheet shown is coated, and two different coatings need to be brushed on both sides of the electrode sheet in the thickness direction; the electrode sheet 1 includes an electrode body 12, which is in the shape of a long strip, one end of the electrode body vertically extends to form a transition section 13, and the free end of the transition section extends and bends in a direction away from the other end of the electrode body to form a matching section 14. At present, the coating processing of the electrode sheet is mostly done manually, and the steps are as follows: first, loading, manually fixing the electrode sheet to the accompanying fixture or directly placing it in the preheating area; then preheating, manually operating the heating device or moving the electrode sheet, so that the electrode sheet is in a hot air flow or heat radiation environment for a certain period of time, so as to brush the coating later; then brushing, manually moving the electrode sheet out of the hot air flow or heat radiation environment, using a brush to dip the coating to brush the surface of the electrode sheet; then drying, manually operating the heating device or moving the electrode sheet, so that the electrode sheet is in a hot air flow or heat radiation environment for a certain period of time, so that the coating on the surface is cured to form a coating; finally, unloading, manually placing the electrode sheet in a finished product box or the accompanying fixture of the next stage. The entire coating process is not only labor-intensive and inefficient, but also involves the risk of workers being scalded by preheating equipment or injured while operating accompanying fixtures. In addition, manual operation is greatly affected by personal habits. During preheating and drying, it is difficult to ensure the consistency of heating time and the balance of heating. When brushing, it is difficult to ensure the uniformity of the brushing thickness of the coating on each electrode sheet, which can easily lead to uneven coating quality on each electrode sheet. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an electrode sheet coating processing device and method to solve the technical problem that the current electrode sheet coating processing adopts manual operation and has high labor intensity, so as to achieve the effect of improving the coating processing quality and safety.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: An electrode sheet coating processing device comprises a transport unit arranged on a workbench, the transport unit comprises a slide rail connected end to end, a trolley movable along the slide rail is arranged on the slide rail, the trolley is provided with a two-finger rotating clamp with two clamps facing the outside of the slide rail for clamping and turning the electrode sheet; a loading unit, a preheating unit, a brushing unit, a drying unit and a unloading unit are arranged in sequence along the outside of the slide rail; The feeding unit includes a linear guide rail, one end of which is located directly below the two-finger rotating clamp, and the other end extends in a direction away from the slide rail. A first cylinder is vertically arranged on the slide table of the linear guide rail, and a piston rod of the first cylinder is upward and a bracket for placing an electrode sheet is arranged at the end thereof. The linear guide rail and the first cylinder are respectively used to adjust the horizontal and vertical positions of the bracket so that the two-finger rotating clamp can clamp the electrode sheet when the trolley is located at the feeding unit. A positioning portion is provided on the bracket so as to position and place the electrode sheet and allow the two side surfaces of the electrode body in the width direction to be clamped by the two-finger rotating clamp. The preheating unit and the drying unit both include a heating box, the heating box has a hot air input port connected to the interior, the hot air input port is connected to an external hot air blower through an air pipe, the heating box has a first clearance gap connected to the interior, the first clearance gap allows the electrode sheet clamped by the two-finger rotating clamp to move along the slide rail through the interior of the heating box; The brushing unit includes two biaxial linear guide groups arranged above the slide rails, the biaxial linear guide groups are connected to brushes with brush heads facing downwards, the biaxial linear guide groups are provided with a paint supply unit for injecting paint into the brush heads of the brushes, and the biaxial linear guide groups are used to adjust the horizontal and vertical positions of the brushes so as to brush the paint on the electrode sheets located at the brushing unit.

[0006] Furthermore, the brushing unit includes a first brushing unit and a second brushing unit and corresponds one-to-one with the two bi-axial linear guide groups, the drying unit includes a first drying unit and a second drying unit and both include a heating box; the loading unit, the preheating unit, the first brushing unit, the first drying unit, the second brushing unit, the second drying unit and the unloading unit are arranged in sequence along the slide rail; the unloading unit includes a three-axial linear guide group arranged above the slide rail, and a two-finger clamp is connected to the three-axial linear guide group, and the three-axial linear guide group is used to adjust the lateral, longitudinal and vertical positions of the two-finger clamp so as to remove the electrode sheet from the two-finger rotating clamp located at the unloading unit.

[0007] Furthermore, the biaxial linear guide group is rotatably connected to the brush through a servo, the axial direction of the servo shaft is perpendicular to the plane where the two axial directions of the biaxial linear guide group are located, the clamp is horizontally arranged and the length direction of the clamp is perpendicular to the axial direction of the servo shaft, and the servo is used to adjust the inclination angle of the brush head and the electrode sheet when brushing.

[0008] Furthermore, the paint supply unit includes a paint storage cylinder arranged vertically and opening upward, the lower end of the paint storage cylinder is connected to a solenoid valve through a pipeline, the solenoid valve is connected to a drip nozzle through a hose, and the drip nozzle is located in the brush head to inject paint into the brush head.

[0009] Furthermore, the two-finger rotating jaw is driven by air pressure and the interface is facing upward. A lifting mechanism is provided on the inner side of the slide rail at the loading unit, the first brushing unit and the unloading unit. A quick connector is vertically provided on the lifting mechanism. The input end of the quick connector is connected to the air supply equipment, and the output end of the quick connector is downward and located directly above the corresponding interface on the two-finger rotating jaw. The lifting mechanism can drive the quick connector to dock with the interface of the two-finger rotating jaw on the corresponding trolley so that the air supply equipment drives the two-finger rotating jaw to move.

[0010] Furthermore, the second drying unit includes a second drying unit A and a second drying unit B, and both include a heating box. The loading unit, the preheating unit, the first brushing unit, the first drying unit, the second brushing unit, the second drying unit A, the second drying unit B and the unloading unit are evenly spaced along the slide rail, and a trolley is provided on the slide rail at the loading unit, the preheating unit, the first brushing unit, the first drying unit, the second brushing unit, the second drying unit A, the second drying unit B and the unloading unit.

[0011] Furthermore, the two jaws of the two-finger rotating clamp are rod-shaped and perpendicular to the slide rail, and the opposite surfaces of the two jaws are convexly formed with clamping parts for clamping the electrode sheet, and the ends of the clamping parts are V-shaped and match the thickness of the electrode sheet so as to stably clamp the electrode sheet; the bracket is in the shape of a long strip, and the length direction of the bracket is perpendicular to the slide rail. A accommodating groove is opened through the upper surface of the bracket along the length direction, and the width of the accommodating groove matches the width of the electrode sheet, and the accommodating groove and one end face of the bracket in the length direction form the positioning part; both side surfaces in the width direction of the bracket are provided with second clearance notches for the clamping part to extend into the accommodating groove to clamp the electrode sheet; the linear guide rail is perpendicular to the slide rail.

[0012] Furthermore, the slide rail is connected end to end in a ring shape and includes four straight segments and arc segments that are connected in sequence at intervals, and all the trolleys are located on the straight segment of the slide rail; the two jaws of the two-finger rotating jaw, the length direction of the bracket and the linear guide rail are all perpendicular to the straight segment, and the accommodating groove and the end face of the bracket in the length direction away from the corresponding trolley form the positioning portion; the heating box is a rectangular parallelepiped, and the length direction of the heating box is perpendicular to the straight segment where the corresponding trolley is located. The first clearance gap penetrates the heating box in the width direction and extends in the length direction to the end face facing the corresponding trolley, and the projection of the first clearance gap in the width direction of the heating box corresponds to the projection shape of the two jaws and the electrode sheet clamped by the two jaws in the width direction; a high-temperature solenoid valve and a manual ball valve are provided on the air pipe connecting the hot air blower to each heating box.

[0013] Furthermore, the trolley has a cylindrical positioning portion that is perpendicular to the straight section and extends laterally to the outside of the slide rail. The loading unit, the first brush unit, the second brush unit and the unloading unit are all provided with adjustment blocks near the trolley. The upper end of the adjustment block has a V-shaped notch with an opening facing upward. The V-shaped notch is located directly below the corresponding cylindrical positioning portion on the trolley. A second cylinder is vertically provided below the adjustment block. The piston rod of the second cylinder faces upward and is connected to the adjustment block. The second cylinder can drive the adjustment block to rise and make the corresponding cylindrical positioning portion located in the V-shaped notch.

[0014] The present invention also includes an electrode sheet coating processing method, using the electrode sheet coating processing equipment as described above, comprising the following steps: 1) The trolley moves to the loading unit and the two jaws of the two-finger rotating jaw open, placing the electrode sheet on the bracket and positioning it through the positioning part; 2) The linear guide and the first cylinder adjust the position of the bracket so that the electrode sheet is located between the two jaws of the two-finger rotating clamp, and the two jaws of the two-finger rotating clamp are closed to clamp the electrode sheet; 3) The trolley moves to the preheating unit, the electrode sheet enters the heating box through the first gap, and the hot air blower inputs hot air into the heating box through the hot air inlet. After a period of time, the electrode sheet is preheated; 4) The trolley moves to the first brushing unit, the nozzle injects paint into the brush head, the biaxial linear guide assembly drives the brush to brush one side of the electrode sheet, and the two jaws of the two-finger rotating jaw rotate 180° to flip the other side of the electrode sheet upward; 5) The trolley moves to the first drying unit, and the electrode sheet enters the heating box through the first gap. The hot air blower inputs hot air into the heating box through the hot air inlet. After a period of time, the secondary preheating of the electrode sheet and the curing of the surface coating are completed; 6) The trolley moves to the second brushing unit, the drip nozzle injects paint into the brush head, and the biaxial linear guide assembly drives the brush to brush the other side of the electrode sheet; 7) The trolley moves to the second drying unit, and the electrode sheet enters the heating box through the first gap. The hot air blower inputs hot air into the heating box through the hot air inlet, and the coating on the surface of the electrode sheet is cured after a period of time; 8) The trolley moves to the unloading unit and completes unloading.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the electrode sheet coating processing equipment described in the present invention, the loading unit is used to position and adjust the position of the electrode sheet so that it can be clamped by the two-finger rotating clamp, the two-finger rotating clamp in the transport unit is used to replace manual clamping and flipping of the electrode sheet, the slide rail and the trolley replace manual transfer of the electrode sheet, and the transport unit cooperates with the preheating unit, the drying unit, the brushing unit and the unloading unit respectively to replace manual preheating, brushing, drying and unloading operations in the electrode sheet coating processing. The whole process only requires manual placement of the electrode sheet on the bracket. If a mechanical arm or other equipment is used to replace manual placement of the electrode sheet on the bracket and adjust its position, so that the positioning part completes the placement and positioning of the electrode sheet, manual operation can be omitted, which is in line with the development trend of automation in production and manufacturing. It can not only effectively solve the problem of high labor intensity in the current manual operation of electrode sheet coating processing, but also ensure the consistency of electrode sheet preheating and drying time and coating thickness, which is beneficial to improving the quality of electrode sheet coating processing.

[0016] 2. In the electrode sheet coating processing equipment described in the present invention, a first brushing unit and a second brushing unit are respectively provided for brushing the two sides of the electrode sheet, and a first drying unit and a second drying unit are provided for drying the two sides of the electrode sheet after brushing; after brushing the paint on one side of the electrode sheet, before brushing the other side, the electrode sheet is first dried and heated by the first drying unit, which not only makes the surface paint initially solidified and avoids the paint on the electrode sheet from dripping when turning over and brushing the other side, but also makes the preheating effect of the electrode sheet continue, thereby ensuring the brushing effect of the other side, which can further improve the quality of the electrode sheet coating processing 3. In the electrode sheet coating processing equipment described in the present invention, a servo is added between the biaxial linear guide group and the brush. The servo can drive the brush to swing based on the biaxial linear guide group. When brushing, the servo can simulate the human wrist joint to adjust the inclination angle between the brush head and the electrode sheet, which is beneficial to improving the quality of the electrode sheet coating processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of the electrode sheet described in the background technology; Figure 2 A three-dimensional diagram of the electrode sheet coating processing equipment and method described in the embodiment; Figure 3 for Figure 1 Schematic diagram without the support frame, control console and hot air blower; Figure 4 It is a schematic diagram of the structure of the workbench and the transport unit described in the embodiment; Figure 5 for Figure 3 A partial schematic diagram of the middle loading unit; Figure 6 for Figure 3 A partial schematic diagram of the middle preheating unit; Figure 7 for Figure 3 A partial schematic diagram of the first brushing unit in the middle; Figure 8 for Figure 3 Schematic diagram of the structure of the biaxial linear guide rail group, servo, brush and paint supply unit; Fig. 9 for Figure 3 Schematic diagram of the structure of the three-axis linear guide rail group and the two-finger gripper; Fig.10 is a three-dimensional diagram of the two-finger rotating clamp described in this embodiment; Fig.11 This is a schematic diagram of the state of the two-finger rotating clamp clamping the electrode sheet in this embodiment; Fig.12 A three-dimensional diagram of the bracket described in this embodiment Fig.13 This is a schematic diagram of the state when the electrode sheet is positioned and placed on the bracket described in this embodiment; Among them, the electrode sheet 1, the electrode body 12, the transition section 13, the matching section 14; the workbench 21, the support frame 22, the control console 23; the slide rail 31, the trolley 32, the belt 33, the guide wheel 34, the clearance groove 35, the cylindrical positioning part, the adjustment block 37, the second cylinder 38, the motor 39, the two-finger rotating clamp 4, the power body 41, the rotating table 42, the clamp 43, the clamping part 44; the feeding unit 5, the linear guide rail 51, the first cylinder 52, the bracket 53, the accommodating groove 54, the second clearance gap 55; the preheating unit 6, heating box 61, hot air inlet 62, air pipe 63, hot air blower 64, first make way gap 65, high temperature solenoid valve 66, manual ball valve 67; first brushing unit 7, biaxial linear guide rail group 71, brush 72, steering gear 73, paint storage cylinder 74, pipeline 75, solenoid valve 76, hose 77; unloading unit 8, triaxial linear guide rail group 81, two-finger clamp 82; first drying unit 91, second brushing unit 92, second drying unit 93, third cylinder 94, mounting plate 95, quick connector 96. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0019] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", etc. do not mean that the components are absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Example: See also Figure 2 , Figure 3 , Figure 4 and Fig.11, an electrode sheet coating processing equipment, comprising a transport unit arranged on a workbench 21, the transport unit comprising a slide rail 31 connected end to end, a trolley 32 movable along the slide rail 31 is arranged on the slide rail 31, and a two-finger rotating clamp 4 (an existing product, i.e., a rotating finger cylinder or an electric rotating finger with two clamps 43 facing the outside of the slide rail 31, as shown in FIG4, the two-finger rotating clamp 4 comprises a power body 41, one end of the power body 41 is rotatably connected to a rotating table 42, and two clamping jaws seats that can be folded and opened are integrated on the rotating table 42, and the two clamping jaws 43 can be designed and processed as needed and detachably connected to the clamping jaw seats) for clamping and turning over the electrode sheet 1; a loading unit 5, a preheating unit 6, a brushing unit, a drying unit and a unloading unit 8 are arranged in sequence along the outside of the slide rail 31; See also Figure 3 and Figure 5 The feeding unit 5 includes a linear guide rail 51, one end of which is located directly below the two-finger rotating clamp 4, and the other end extends in a direction away from the slide rail 31. A first cylinder 52 is vertically provided on the slide table of the linear guide rail 51. The piston rod of the first cylinder 52 faces upward and a bracket 53 for placing the electrode sheet 1 is provided at the end. The linear guide rail 51 and the first cylinder 52 are respectively used to adjust the horizontal and vertical positions of the bracket 53 so that the two-finger rotating clamp 4 can clamp the electrode sheet 1 when the trolley 32 is located at the feeding unit 5. The bracket 53 has a positioning portion so as to position and place the electrode sheet 1 so that the two side surfaces of the electrode body 12 in the width direction can be clamped by the two-finger rotating clamp 4; See also Figure 3 and Figure 6 The preheating unit 6 and the drying unit both include a heating box 61, the heating box 61 has a hot air input port 62 connected to the interior, the hot air input port 62 is connected to an external hot air blower 64 through an air pipe 63, and the heating box 61 has a first clearance gap 65 connected to the interior, and the first clearance gap 65 allows the electrode sheet 1 clamped by the two-finger rotating clamp 4 to move along the slide rail 31 through the interior of the heating box 61; See also Figure 3 , Figure 7 and Figure 8 The brushing unit includes two biaxial linear guide rails 71 arranged above the slide rail 31, and the biaxial linear guide rails 71 are connected with a brush 72 with a brush head facing downward, and the biaxial linear guide rails 71 are provided with a paint supply unit for injecting paint into the brush head of the brush 72, and the biaxial linear guide rails 71 are used to adjust the position of the brush 72 in the horizontal direction and the vertical direction so as to brush the electrode sheet 1 located at the brushing unit with paint; See also Figure 8In this embodiment, the paint supply unit includes a paint storage cylinder 74 which is vertically arranged with its opening facing upwards. The lower end of the paint storage cylinder 74 is connected to a solenoid valve 76 through a pipe 75. The solenoid valve 76 is connected to a drip nozzle (not shown in the figure) through a hose 77. The drip nozzle is located in the brush head of the brush 72 so as to inject paint into the brush head of the brush. When implemented, the brush can adopt the following structure: the brush head of the brush 72 includes a square closed shell, and a plurality of small holes are opened on the lower end surface of the shell. The plurality of small holes are distributed in a rectangular array and are arranged in the axial direction of the steering gear shaft. The distribution length is not less than the width of the electrode sheet. The small holes are filled with bristles. The upper ends of the bristles are connected to the inner cavity of the shell through the small holes, and the lower ends of the bristles extend to the outside of the shell. The lengths of all the bristles outside the shell are equal so that the lower ends of the brushes are flush. A tube hole is opened on one side of the shell. The hose 77 seals and passes through the tube hole and is connected to the drip nozzle in the shell. The paint can be replenished regularly. A liquid level sensor can also be set in the shell and connected to the signal of the solenoid valve 76. Compared with the regular injection of paint, the injection of paint can be more accurate by controlling the opening of the solenoid valve 76 through the liquid level sensor.

[0021] See also Figure 3 The unloading unit 8 is used to collect or transfer the electrode sheet 1 after the surface coating is cured by the drying unit. When implemented, the unloading unit 8 can directly place a collection box under the slide rail to collect the electrode sheet 1, or set a mechanical arm or other mechanism to transfer the electrode sheet 1; see Fig. 9 In this embodiment, the unloading unit 8 includes a three-axial linear guide group 81 arranged above the slide rail 31, and a two-finger clamp 82 is connected to the three-axial linear guide group 81. The three-axial linear guide group 81 is used to adjust the lateral, longitudinal and vertical positions of the two-finger clamp 82 so as to remove the electrode sheet 1 from the two-finger rotating clamp 4 located at the unloading unit 8.

[0022] In the electrode sheet coating processing equipment described in the present invention, the loading unit 5 is used to position and adjust the position of the electrode sheet 1 so that the two-finger rotating clamp 4 can clamp it. The two-finger rotating clamp 4 in the transport unit is used to replace manual clamping and flipping of the electrode sheet 1. The slide rail 31 and the trolley 32 replace manual transfer of the electrode sheet 1. The transport unit cooperates with the preheating unit 6, the drying unit, the brushing unit and the unloading unit 8 to replace manual preheating, brushing, drying and unloading operations in the electrode sheet coating processing. The whole process only requires manual placement of the electrode sheet 1 on the bracket 53. If a mechanical arm or other equipment is used to replace manual placement of the electrode sheet 1 on the bracket 53 and adjust its position, the positioning unit can complete the placement of the electrode sheet 1. The positioning is carried out by positioning, which can save manual operation, conforming to the development trend of automation in production and manufacturing. It can not only effectively solve the problem of high labor intensity of the current manual operation in electrode coating processing, but also the two jaws 43 and the clamped electrode sheet 1 enter the heating box 61 from the first clearance gap 65, and then the trolley 32 stops. During drying and heating, the electrode sheet 1 and the heating box 61 are relatively still, which can effectively ensure the consistency of the heating time. The heating conditions of each electrode sheet 1 are the same, which can make the coating quality of each electrode sheet 1 more uniform. The double-axial linear guide group 71 is used to drive the brush 72 to brush the electrode sheet 1, so as to ensure the consistency of the coating thickness on the electrode sheet 1, which is beneficial to improving the quality of electrode coating processing.

[0023] See 2 and Figure 3 The brushing unit includes a first brushing unit 7 and a second brushing unit 92 and corresponds to the two biaxial linear guide rail groups 71 one by one, and the drying unit includes a first drying unit 91 and a second drying unit 93 and both include a heating box 61; the loading unit 5, the preheating unit 6, the first brushing unit 7, the first drying unit 91, the second brushing unit 92, the second drying unit 93 and the unloading unit 8 are arranged in sequence along the slide rail 31; in this way, after the paint is brushed on one side of the electrode sheet 1, before brushing the other side, the electrode sheet 1 is first dried and heated by the first drying unit 91, which not only makes the surface paint initially solidified and avoids the paint on the electrode sheet 1 from dripping when turning over and brushing the other side, but also makes the preheating effect of the electrode sheet 1 continue, thereby ensuring the brushing effect of the other side, which can further improve the quality of the electrode sheet coating processing.

[0024] See also Figure 8The biaxial linear guide rail group 71 is rotatably connected to the brush 72 through the steering gear 73, the axial direction of the steering gear 73 shaft is perpendicular to the plane where the two axial directions of the biaxial linear guide rail group 71 are located, the clamping jaw 43 is horizontally arranged and the length direction of the clamping jaw 43 is perpendicular to the axial direction of the steering gear 73 shaft; in this way, when brushing, the biaxial linear guide rail group 71 adjusts the vertical position of the brush 72 to make the brush head contact with the electrode sheet 1, and then adjusts the lateral position of the brush 72 to make the brush head brush the electrode sheet 1 back and forth, but since the surface of the electrode sheet 1 as shown in the figure 1 is not a plane, the brushing effect provided by the action of the biaxial linear guide rail group 71 alone is poor Therefore, the present invention adds a steering gear 73 between the biaxial linear guide group 71 and the brush 72. The steering gear 73 can drive the brush 72 to swing based on the biaxial linear guide group 71. When brushing, the steering gear 73 adjusts the angle between the brush head and the surface of the electrode sheet 1 to adapt to the height of the transition section 13 and the matching section 14 on the electrode sheet 1, that is, the steering gear 73 can simulate the human wrist joint to adjust the inclination angle between the brush head and the electrode sheet 1, which is beneficial to improving the quality of the electrode sheet coating processing; during implementation, the automatic control of the movement of the trolley 32, the biaxial linear guide group 71 and the steering gear 73 can be achieved by single-chip microcomputer or PLC programming.

[0025] See also Figure 3 , Figure 5 and Figure 7 Since the two-finger rotating clamp 4 moves with the trolley 32, in order to solve the energy supply and control of the two-finger rotating clamp 4, in the present invention, a pneumatically driven two-finger rotating clamp 4 (i.e., a rotating finger cylinder) is used, the interface of the two-finger rotating clamp 4 faces upward, and the two clamps 43 of the two-finger rotating clamp 4 remain retracted in an unpressurized state (the clamping state is a function setting of the clamp itself), and a lifting mechanism is provided on the inner side of the slide rail 31 at the loading unit 5, the first brushing unit 7 and the unloading unit 8. A quick connector 96 is vertically provided on the lifting mechanism, and the input end of the quick connector 96 faces upward and is connected to an air supply device (not shown in the figure). The lifting mechanism can drive the quick connector 96 to dock with the interface of the two-finger rotating clamp 4 on the trolley 32 at the corresponding position so that the air supply device drives the two-finger rotating clamp 4 to move, such as Figure 4 , Figure 5 It can be seen that there are three interfaces on the power body 41, a single interface at the front is used to connect the air supply and control the opening of the two clamps 43, and the two adjacent interfaces at the rear are used to connect the air supply and control the forward and reverse rotation of the rotating table 42 according to the actual air intake interface. In this embodiment, the lifting mechanism is a third cylinder 94, and the third cylinder 94 is fixed on the workbench 21, at the loading unit 5 and the first brushing unit 7, the piston rod of the third cylinder 94 is vertically facing and connected to the horizontally arranged mounting plate 95, and the quick connector 96 is arranged at one end of the mounting plate 95; at the unloading unit 8, the third cylinder 94 is fixed on the three-axial linear guide group 81, the piston rod of the third cylinder 94 is vertically facing downward and connected to the mounting plate 95, and the quick connector 96 is arranged below the mounting plate 95 and fixedly connected.

[0026] See also Figure 2 , Figure 3 and Figure 4 The first drying unit 91 is used for preliminary drying and secondary preheating, and the second drying unit 93 is used for drying and curing the coating on the surface of the electrode sheet 1. The heating time of the electrode sheet 1 in the second drying unit 93 must be greater than that in the first drying unit 91; therefore, in order to coordinate and minimize the time the trolley 32 stays in each unit to speed up the coating processing speed, in the present invention, the second drying unit 93 is divided into the second drying unit 93 A and the second drying unit 9 3 yuan B and all include a heating box 61, a loading unit 5, a preheating unit 6, a first brushing unit 7, a first drying unit 91, a second brushing unit 92 yuan, a second drying unit 93 yuan A, a second drying unit 93 yuan B and a unloading unit 8 are evenly spaced in sequence along the slide rail 31, and a trolley 32 is provided on the slide rail 31 at the loading unit 5, the preheating unit 6, the first brushing unit 7, the first drying unit 91, the second brushing unit 92 yuan, the second drying unit 93 yuan A, the second drying unit 93 yuan B and the unloading unit 8.

[0027] See also Figure 5 and Figure 10-13 In the present invention, in order to realize the placement and positioning of the electrode sheet 1 so that the two-finger rotating clamp 4 can accurately clamp the electrode sheet 1, the positioning portion adopts the following structural form: the bracket 53 is in the shape of a long strip, the length direction of the bracket 53 is perpendicular to the straight line segment, and the upper surface of the bracket 53 is provided with a receiving groove 54 along the length direction, the width of the receiving groove 54 matches the width of the electrode sheet 1, and the receiving groove 54 and one end surface of the bracket 53 in the length direction form the positioning portion; in addition, in order to cooperate with the positioning portion and improve the stability of the two-finger rotating clamp 4 clamping the electrode sheet 1, the two clamping jaws 43 of the two-finger rotating clamp 4 are rod-shaped and parallel to each other, and the clamping portion 44 for clamping the electrode sheet 1 is formed on the opposite surfaces of the two clamping jaws 43, and the end of the clamping portion 44 is V-shaped and matches the thickness of the electrode sheet 1. Correspondingly, both side surfaces of the bracket 53 in the width direction have a second clearance notch 55 for the clamping portion 44 to extend into the receiving groove 54 to clamp the electrode sheet 1; the linear guide 51 is perpendicular to the straight line segment.

[0028] See also Figure 3-Figure 6The slide rail 31 is connected end to end in a ring shape and includes four straight segments and arc segments connected in sequence at intervals. All the trolleys 32 are located on the straight segment of the slide rail 31. The two jaws 43 of the two-finger rotating jaw 4 on the trolley 32 extend perpendicularly to the straight segment and extend toward the outside of the slide rail 31; the length direction of the bracket 53 is perpendicular to the straight segment where the corresponding trolley 32 is located, and the end surface of the accommodating groove 54 and the bracket 53 in the length direction away from the corresponding trolley 32 forms the positioning portion; the heating box 61 is a rectangular parallelepiped, and the length direction of the heating box 61 is perpendicular to the straight segment where the corresponding trolley 32 is located. The first clearance gap 65 penetrates the heating box 61 in the width direction and extends in the length direction to the end surface facing the corresponding trolley 32. The projection of the first clearance gap 65 in the width direction of the heating box 61 corresponds to the projection shape of the two jaws 43 and the electrode sheet 1 clamped by the two jaws 43 in the width direction; the air pipe 63 connecting the hot air blower 64 and each heating box 61 is provided with a high-temperature solenoid valve 66 and a manual ball valve 67; In this way, the two-finger rotating clamp 4 clamps the two side surfaces of the electrode body 12 on the electrode sheet 1 in the width direction. By setting the above-mentioned positioning part, the matching section 14 of the electrode sheet 1 placed on the bracket 53 is away from the two-finger rotating clamp 4. Compared with the matching section 14 of the electrode sheet 1 facing the two-finger rotating clamp 4, the length of the two clamping jaws 43 of the two-finger rotating clamp 4 is shorter, which is more conducive to the stability of clamping; in addition, the matching section 14 of the electrode sheet 1 is away from the two-finger rotating clamp 4. When the two-finger rotating clamp 4 clamps the electrode sheet 1 through the first clearance notch 65, the two clamping jaws 43 and the electrode sheet 1 overlaps with the projection in the width direction, and the shape design of the first clearance gap 65 does not need to consider the two clamping jaws 43. Correspondingly, the projection of the first clearance gap 65 in the width direction of the heating box 61 in the present invention is designed to correspond to the projection shape of the electrode sheet 1 in the width direction. While ensuring that the two-finger rotating clamping jaws 4 can clamp the electrode sheet 1 smoothly, the area of ​​the first clearance gap 65 on each surface of the heating box 61 can be minimized, thereby reducing the leakage of hot air during preheating and drying, which is beneficial to reducing energy consumption, shortening the preheating and drying time, and accelerating the coating processing progress.

[0029] See also Figure 4 In the present invention, the trolley 32 is driven by the following structure: a belt 33 in the shape of a ring and concentric with the slide rail 31 is provided on the inner side of the slide rail 31, and guide wheels 34 are provided at the four arc sections on the inner side of the belt 33, and any guide wheel 34 is driven by a motor 39. The trolley 32 is connected to the belt 33 by bolts (not shown in the figure), and the rod of the bolt passes through the belt 33 outward and is threadedly connected to the trolley 32. The inner side surface of the belt 33 and the outer circumferential surface of the guide wheel 34 are both provided with teeth and meshed, and a circle of make-way grooves 35 for making way for the head of the bolt are provided on the outer circumferential surface of the guide wheel 34; See also Figure 3-Figure 5 and Figure 7During the coating process, each trolley 32 moves intermittently along the slide rail 31. Since loading, brushing and unloading have high requirements for the position of the electrode sheet 1, in order to ensure that the trolley 32 stops stably at the loading unit 5, the first brushing unit 7, the second brushing unit 92 and the unloading unit 8 and the position is accurate, the trolley 32 and the slide rail 31 are provided with mutually cooperating positioning structures as follows: the trolley 32 has a cylindrical positioning portion 36 that is perpendicular to the straight line segment and extends laterally to the outside of the slide rail 31. The loading unit 5, the first brushing unit 7, the second brushing unit 92 and the unloading unit 8 are all provided with an adjustment block 37 near the trolley 32. The upper end of the adjustment block 37 has a V-shaped notch with an opening facing upward (it can also be adapted to the cylindrical positioning portion 36 during implementation). Semicircular notch), the V-shaped notch is located directly below the cylindrical positioning portion 36 on the corresponding trolley 32, and a second cylinder 38 is vertically arranged below the adjustment block 37, and the piston rod of the second cylinder 38 is upward and connected to the adjustment block 37, and the second cylinder 38 can drive the adjustment block 37 to rise and make the corresponding cylindrical positioning portion 36 located in the V-shaped notch; in this way, when the trolley 32 is not accurately stopped at the material unit, the first brush unit 7, the second brush unit 92 and the unloading unit 8, the cylindrical positioning portion 36 on the trolley 32 is offset from the V-shaped notch in the vertical direction, and as the second cylinder 38 drives the adjustment block 37 to rise, the inner side surface of the inclined surface in the V-shaped notch abuts against the cylindrical positioning portion 36 and drives the trolley 32 to move, thereby calibrating the position of the trolley 32.

[0030] In this embodiment, in order to improve the integrity of the electrode sheet coating processing equipment for easy transportation and use, a support frame 22 is provided under the workbench 21, and the transport unit, loading unit 5, preheating unit 6, brushing unit, drying unit and unloading unit 8 are all installed based on the support frame 22 and the workbench 21, and a control console 23 is provided at the loading unit 5.

[0031] In order to facilitate understanding of the structure of the electrode sheet coating processing equipment of the present invention, its specific working process is introduced as follows: 1) Material loading preparation: The slide of the linear guide 51 is located at one end away from the slide rail 31, and the first cylinder 52 on the slide is in a retracted state, that is, the bracket 53 is at a certain distance from the two-finger rotating clamp 4 in the horizontal direction, and the bracket 53 is lower than the height of the two clamps 43 of the two-finger rotating clamp 4; 2) Start operation: Start the electrode sheet coating processing equipment, and according to the preset time interval (i.e., the maximum time required for the trolley 32 to stop at each unit to complete the corresponding part processing), the motor 39 intermittently drives the belt 33 to rotate through the guide wheel 34, and the belt 33 drives each trolley 32 to move along the slide rail 31; 3) Placing the electrode sheet: placing the electrode sheet 1 on the bracket 53 and positioning it through the positioning part, that is, the electrode sheet 1 is located in the receiving groove 54, and the transition section 13 of the electrode sheet 1 abuts against the side of the bracket 53 away from the trolley 32; 4) Movement and clamping: the trolley 32 moves to the loading unit and stops, the second cylinder 38 drives the adjustment block 37 to rise and locate the cylindrical positioning portion 36 in the V-shaped notch to achieve accurate positioning of the trolley 32, the third cylinder 94 drives the quick connector 96 to fall and dock with the interface of the two-finger rotating clamp 4, and the air supply device drives the two clamping jaws 43 of the two-finger rotating clamp 4 to open through air pressure (this process can also be performed in step 2 or step 3); The slide table on the linear guide rail 51 slides toward the slide rail 31 until the bracket 53 is located directly below the two jaws 43 of the two-finger rotating clamp 4, and the second clearance notch 55 on the bracket 53 is vertically opposite to the clamping portion 44 on the clamp, and then the piston rod of the first cylinder 52 extends to drive the bracket 53 to move upward until the electrode sheet 1 is located between the two jaws 43 of the two-finger rotating clamp 4, and the second clearance notch 55 on the bracket 53 is at the same height as the clamping portion 44 on the clamp; The air supply device stops supplying air to the two-finger rotating clamp 4, and the two clamps 43 of the two-finger rotating clamp 4 automatically close and clamp the electrode sheet 1 after losing the air pressure drive; In addition, in order to ensure the accuracy and stability of the horizontal displacement of the bracket 53 for clamping and avoid relative sliding between the electrode sheet 1 and the bracket 53 during the movement, resulting in failure of placement and positioning, in this embodiment, the linear guide 51 adopts a combination of a servo motor and a ball screw, and the slide is the nut seat in the ball screw structure; 5) Reset and transport: The piston rod of the first cylinder 52 retracts to drive the bracket 53 to descend, and the side of the bracket 53 away from the trolley 32 disengages from the transition section 13 of the electrode sheet 1, and the slide of the linear guide 51 moves outward and returns to its original position to prepare for the next loading, and then the third cylinder 94 drives the quick connector 96 to rise and separate from the interface of the two-finger rotating clamp 4, and the second cylinder 38 drives the adjustment block 37 to descend, and the trolley 32 moves along the slide rail 31 to the subsequent station.

[0032] 6) Preheating: The trolley 32 moves to the preheating unit 6 and stops there, the electrode sheet 1 enters the heating box 61 through the first clearance gap 65, and the hot air blower 64 inputs hot air into the heating box 61 through the hot air input port 62, and the preheating of the electrode sheet 1 is completed after a period of time; 7) First brushing: The clamping mechanism horizontally clamps the electrode sheet 1, moves with the trolley 32 to the first brushing unit and stays there, the second cylinder 38 drives the adjustment block 37 to rise and locate the cylindrical positioning portion 36 in the V-shaped notch to achieve accurate positioning of the trolley 32, the paint pumping device injects paint into the brush head through the hose and the drip nozzle, the vertical linear guide in the biaxial linear guide group 71 drives the brush 72 to descend and make the brush head touch the surface of the electrode sheet 1, and then the biaxial linear guide group 71 and the steering gear 73 brush the paint on one side of the electrode sheet 1 according to the programmed path; After brushing one side of the electrode sheet 1, the biaxial linear guide rail assembly 71 drives the brush 72 back to the initial position, the lifting mechanism drives the quick connector 96 to fall and dock with the interface of the two-finger rotating clamp 4, the air supply device drives the two clamps 43 of the two-finger rotating clamp 4 to rotate 180 degrees through air pressure to turn the other side of the electrode sheet 1 upward, the third cylinder 94 drives the quick connector 96 to rise and separate from the interface of the two-finger rotating clamp 4, and the second cylinder 38 drives the adjustment block 37 to descend; 8) Primary drying and secondary preheating: The trolley 32 moves to the first drying unit 91, and the electrode sheet 1 enters the heating box 61 through the first clearance gap 65. The hot air blower 64 inputs hot air into the heating box 61 through the hot air input port 62. After a period of time, the secondary preheating of the electrode sheet 1 and the curing of the surface coating are completed; 9) Secondary brushing: The clamping mechanism horizontally clamps the electrode sheet 1, moves with the trolley 32 to the second brushing unit and stays there, and repeats the operation of step 7) to complete the brushing of the paint on the other side of the electrode sheet 1; 10) Secondary drying: the trolley 32 moves to the second drying unit 93, the electrode sheet 1 enters the heating box 61 through the first clearance gap 65, and the hot air blower 64 inputs hot air into the heating box 61 through the hot air input port 62, and the coating on the surface of the electrode sheet 1 is cured after a period of time; 11) Transport and unloading: The trolley 32 moves to the unloading unit 8, and the lifting mechanism drives the quick connector 96 to fall and dock with the interface of the two-finger rotating clamp 4. The air supply device drives the two jaws 43 of the two-finger rotating clamp 4 to open through air pressure. At the same time, the three-axial linear guide group 81 drives the two-finger clamp 82 to remove the electrode sheet 1 to complete the unloading.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Those skilled in the art should understand that those modifications or equivalent substitutions of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution should be included in the scope of the claims of the present invention.

Claims

1. An electrode sheet coating processing equipment, characterized in that: It comprises a transport unit arranged on a workbench, the transport unit comprises a slide rail connected end to end, a trolley which can move along the slide rail is arranged on the slide rail, and a two-finger rotating clamp with two clamps facing the outside of the slide rail is arranged on the trolley for clamping and turning over the electrode sheet; a loading unit, a preheating unit, a brushing unit, a drying unit and a unloading unit are arranged in sequence along the outside of the slide rail; The feeding unit includes a linear guide rail, one end of which is located directly below the two-finger rotating clamp, and the other end extends in a direction away from the slide rail. A first cylinder is vertically arranged on the slide table of the linear guide rail, and a piston rod of the first cylinder is upward and a bracket for placing an electrode sheet is arranged at the end thereof. The linear guide rail and the first cylinder are respectively used to adjust the horizontal and vertical positions of the bracket so that the two-finger rotating clamp can clamp the electrode sheet when the trolley is located at the feeding unit. A positioning portion is provided on the bracket so as to position and place the electrode sheet and allow the two side surfaces of the electrode body in the width direction to be clamped by the two-finger rotating clamp. The preheating unit and the drying unit both include a heating box, the heating box has a hot air input port connected to the interior, the hot air input port is connected to an external hot air blower through an air pipe, the heating box has a first clearance gap connected to the interior, the first clearance gap allows the electrode sheet clamped by the two-finger rotating clamp to move along the slide rail through the interior of the heating box; The brushing unit includes two biaxial linear guide groups arranged above the slide rails, the biaxial linear guide groups are connected to brushes with brush heads facing downwards, the biaxial linear guide groups are provided with a paint supply unit for injecting paint into the brush heads of the brushes, and the biaxial linear guide groups are used to adjust the horizontal and vertical positions of the brushes so as to brush the paint on the electrode sheets located at the brushing unit.

2. The electrode sheet coating processing equipment according to claim 1, characterized in that: The brushing unit includes a first brushing unit and a second brushing unit and corresponds to the two biaxial linear guide groups one by one, the drying unit includes a first drying unit and a second drying unit and both include a heating box; the loading unit, the preheating unit, the first brushing unit, the first drying unit, the second brushing unit, the second drying unit and the unloading unit are arranged in sequence along the slide rail; the unloading unit includes a three-axial linear guide group arranged above the slide rail, and a two-finger clamp is connected to the three-axial linear guide group. The three-axial linear guide group is used to adjust the lateral, longitudinal and vertical positions of the two-finger clamp so as to remove the electrode sheet from the two-finger rotating clamp located at the unloading unit.

3. The electrode sheet coating processing equipment according to claim 2, characterized in that: The biaxial linear guide assembly is rotatably connected to the brush through a servo, the axial direction of the servo shaft is perpendicular to the plane where the two axial directions of the biaxial linear guide assembly are located, the clamp is horizontally arranged and the length direction of the clamp is perpendicular to the axial direction of the servo shaft, and the servo is used to adjust the inclination angle of the brush head and the electrode sheet when brushing.

4. The electrode sheet coating processing equipment according to claim 2, characterized in that: The paint supply unit includes a paint storage cylinder arranged vertically and opening upward, the lower end of the paint storage cylinder is connected to a solenoid valve through a pipeline, the solenoid valve is connected to a drip nozzle through a hose, and the drip nozzle is located in the brush head to inject paint into the brush head.

5. The electrode sheet coating processing equipment according to claim 2, characterized in that: The two-finger rotating clamp is driven by air pressure and the interface is facing upward. A lifting mechanism is provided on the inner side of the slide rail at the loading unit, the first brushing unit and the unloading unit. A quick connector is vertically provided on the lifting mechanism. The input end of the quick connector is connected to the air supply equipment, and the output end of the quick connector is downward and located directly above the corresponding interface on the two-finger rotating clamp. The lifting mechanism can drive the quick connector to dock with the interface of the two-finger rotating clamp on the corresponding trolley so that the air supply equipment can drive the two-finger rotating clamp to move.

6. The electrode sheet coating processing equipment according to claim 2, characterized in that: The second drying unit includes a second drying unit A and a second drying unit B, and both include a heating box. A loading unit, a preheating unit, a first brushing unit, a first drying unit, a second brushing unit, a second drying unit A, a second drying unit B and a unloading unit are evenly spaced in sequence along a slide rail, and a trolley is provided on the slide rail at the loading unit, the preheating unit, the first brushing unit, the first drying unit, the second brushing unit, the second drying unit A, the second drying unit B and the unloading unit.

7. The electrode sheet coating processing equipment according to claim 6, characterized in that: The two jaws of the two-finger rotating clamp are rod-shaped and perpendicular to the slide rail. The two jaws have protrusions on the opposite surfaces to form clamping parts for clamping the electrode sheet. The end of the clamping part is V-shaped and matches the thickness of the electrode sheet so as to stably clamp the electrode sheet; the bracket is in the shape of a long strip, the length direction of the bracket is perpendicular to the slide rail, and a accommodating groove is opened through the upper surface of the bracket along the length direction. The width of the accommodating groove matches the width of the electrode sheet, and the accommodating groove and one end face of the bracket in the length direction form the positioning part; both side surfaces in the width direction of the bracket are provided with second clearance notches for the clamping part to extend into the accommodating groove to clamp the electrode sheet; the linear guide rail is perpendicular to the slide rail.

8. The electrode sheet coating processing equipment according to claim 7, characterized in that: The slide rail is connected end to end in a ring shape and includes four straight segments and arc segments that are connected in sequence at intervals. All the trolleys are located on the straight segment of the slide rail; the two jaws of the two-finger rotating jaw, the length direction of the bracket and the linear guide rail are all perpendicular to the straight segment, and the accommodating groove and the end face of the bracket in the length direction away from the corresponding trolley form the positioning part; the heating box is a rectangular parallelepiped, and the length direction of the heating box is perpendicular to the straight segment where the corresponding trolley is located. The first clearance gap penetrates the heating box in the width direction and extends in the length direction to the end face facing the corresponding trolley. The projection of the first clearance gap in the width direction of the heating box corresponds to the projection shape of the two jaws and the electrode sheet clamped by the two jaws in the width direction; a high-temperature solenoid valve and a manual ball valve are provided on the air pipe connecting the hot air blower to each heating box.

9. The electrode sheet coating processing equipment according to claim 8, characterized in that: The trolleys are each provided with a cylindrical positioning portion which is perpendicular to the straight section and extends laterally to the outside of the slide rail; the loading unit, the first brush unit, the second brush unit and the unloading unit are each provided with an adjustment block near the trolley; the upper end of the adjustment block has a V-shaped notch with an opening facing upward; the V-shaped notch is located directly below the corresponding cylindrical positioning portion on the trolley; a second cylinder is vertically provided below the adjustment block; the piston rod of the second cylinder faces upward and is connected to the adjustment block; the second cylinder can drive the adjustment block to rise and make the corresponding cylindrical positioning portion located in the V-shaped notch.

10. A method for processing electrode coating, characterized in that: Using an electrode sheet coating processing device as described in any one of claims 2 to 9 comprises the following steps: 1) The trolley moves to the loading unit and the two jaws of the two-finger rotating jaw open, placing the electrode sheet on the bracket and positioning it through the positioning part; 2) The linear guide and the first cylinder adjust the position of the bracket so that the electrode sheet is located between the two jaws of the two-finger rotating clamp, and the two jaws of the two-finger rotating clamp are closed to clamp the electrode sheet; 3) The trolley moves to the preheating unit, the electrode sheet enters the heating box through the first gap, and the hot air blower inputs hot air into the heating box through the hot air inlet. After a period of time, the electrode sheet is preheated; 4) The trolley moves to the first brushing unit, the drip nozzle injects paint into the brush head, the biaxial linear guide assembly drives the brush to brush one side of the electrode sheet, and the two jaws of the two-finger rotating jaw rotate 180° to turn the other side of the electrode sheet upward; 5) The trolley moves to the first drying unit, and the electrode sheet enters the heating box through the first gap. The hot air blower inputs hot air into the heating box through the hot air inlet. After a period of time, the secondary preheating of the electrode sheet and the curing of the surface coating are completed; 6) The trolley moves to the second brushing unit, the drip nozzle injects paint into the brush head, and the biaxial linear guide assembly drives the brush to brush the other side of the electrode sheet; 7) The trolley moves to the second drying unit, and the electrode sheet enters the heating box through the first gap. The hot air blower inputs hot air into the heating box through the hot air inlet, and the coating on the surface of the electrode sheet is cured after a period of time; 8) The trolley moves to the unloading unit and completes unloading.

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