Coating device for resistor disc production

Abstract

The invention discloses a coating device for resistor disc production, and relates to the technical field of resistor disc insulating layer processing equipment.The coating device comprises a feeding device, a coating device body and a discharging device.The coating device body comprises a workbench, and a movable moving part is arranged on the workbench; the moving part is provided with two movable clamping parts and an adsorption part, the moving part is provided with a plurality of calibration parts, and when the clamping parts are about to clamp the resistor discs, the calibration parts can be in contact with the resistor discs at a higher speed and support the resistor discs; according to the zinc oxide resistor disc coating device, through mutual cooperation of the adsorption part, the first cavity, the second cavity, the clamping parts and the like, the problems that an existing coating device cannot uniformly coat the side faces of the zinc oxide resistor disc and cannot stably cover the end faces are solved.

Description

Technical Field

[0001] This invention relates to the field of equipment for processing insulating layers of resistor sheets, and more particularly to a coating apparatus for producing resistor sheets. Background Technology

[0002] Zinc oxide resistance elements are used as a crucial core component in surge arresters, protective devices that ensure the safe operation of the power industry. Because the round, disc-shaped zinc oxide resistance elements have rough sides, they are susceptible to contamination and moisture absorption, which can reduce their performance. Furthermore, to prevent damage and flashover under overvoltage and high-current impacts, a highly insulating, high-strength, high-temperature resistant, high-current resistant, and moisture-proof glaze coating is applied to protect the resistance elements.

[0003] Currently, when coating zinc oxide resistor sheets, only the sides need to be coated, while the two end faces must be kept clean to maintain the electrode performance at both ends of the resistor sheet. Existing devices can only simply clamp the resistor sheet and then contact it with the coating component, causing the coating component to rotate and coat the sides of the resistor sheet. However, they cannot cover the end faces of the resistor sheet. Furthermore, because the resistor sheet cannot rotate, the coating on the sides of the resistor sheet is uneven, resulting in a high defect rate of the processed resistor sheet products.

[0004] In actual operation, due to slight deviations in the position of the resistor sheet during feeding, the center of the resistor sheet and the center of the two clamping parts may not be on the same straight line when the clamping parts and flexible pad are clamping the resistor sheet. As a result, part of the end face of the resistor sheet may be exposed to the clamping parts when clamping, and the end face of the resistor sheet may be coated, while the farthest part of the exposed end face of the resistor sheet may have insufficient coating on the side, resulting in the resistor sheet not meeting the production requirements.

[0005] Because mechanical transmission involves vibration, slight displacement may occur between the resistor sheet and the clamping component during the vibration process. This can result in the resistor sheet not being completely covered by the flexible pad, leading to uneven coating on the sides of the resistor sheet and only a small portion of the cross-section being coated. This affects the stability of the resistor sheet's electrodes, resulting in imperfect functionality and failure to meet usage requirements. Summary of the Invention

[0006] The purpose of this invention is to provide a coating apparatus for the production of resistor sheets, so as to solve the technical problems mentioned in the background art that the existing coating apparatus cannot uniformly coat the sides of zinc oxide resistor sheets and cannot stably cover the end faces.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a coating apparatus for resistor sheet production, comprising a feeding device, a coating device, and a discharging device. The coating device includes a worktable, on which a movable component is provided. The movable component is provided with two movable clamping components and two rotatable adsorption components. The movable component is provided with multiple calibration components. When the clamping components are about to clamp the resistor sheet, the calibration components can contact the resistor sheet at a faster speed and lift the resistor sheet, thereby aligning the center of the resistor sheet with the center of the clamping components. This allows the two clamping components to completely cover the two end faces of the resistor sheet, while the two adsorption components adsorb the two end faces of the resistor sheet. The worktable contains a coating component. When the two clamping components move while clamping the resistor sheet, the two clamping components drive the resistor sheet to rotate synchronously and the coating component coats the sides of the resistor sheet.

[0008] Preferably, both adsorption elements are rotatably connected to the moving element, and an electric telescopic column is fixedly provided inside the adsorption element, with the telescopic end of the electric telescopic column fixedly connected to the clamping element.

[0009] Preferably, each of the adsorption components is slidably provided with a movable plate, which divides the corresponding adsorption component into a first chamber and a second chamber. The first chamber is located near the corresponding electric telescopic column. The electric telescopic column and the corresponding clamping component are each provided with an adsorption groove that communicates with each other. The adsorption groove is a one-way channel with its opening facing the first chamber. The moving component is provided with two first limit switches corresponding to the clamping component.

[0010] Preferably, each of the calibration components is slidably connected to the moving component via a sliding groove, the moving component has multiple communicating grooves that communicate with the corresponding sliding grooves, each of the first chambers is connected to the corresponding communicating grooves via through holes, and the inward-facing end face of the calibration component is an arc-shaped surface.

[0011] Preferably, the movable component is provided with a gas control component, and both ends of the gas control component are connected to the corresponding second chamber through connecting pipes.

[0012] Preferably, a driving component is fixedly provided on both sides of the workbench, both adsorption components are rotatably connected to the moving component, and each adsorption component is fixedly provided with a passive component that can cooperate with the corresponding driving component.

[0013] Preferably, the workbench is provided with a movable frame, the movable part is provided with a guide groove, a movable rod is slidably provided in the guide groove, the movable rod is slidably connected to the movable frame, and a second limit switch is provided on both sides of the guide groove.

[0014] Preferably, a first motor is provided inside the workbench, and a reciprocating screw is coaxially fixed at the output end of the first motor. The reciprocating screw is connected to the moving frame to drive the moving frame to move back and forth.

[0015] Preferably, the workbench is provided with a liquid tank, and two pulleys are rotatably arranged in the liquid tank. The two pulleys are connected by a transmission belt, and the outer wall of the transmission belt is fixedly connected to the coated part. The workbench is provided with a second motor, and the second motor is coaxially fixedly connected to one of the pulleys.

[0016] Preferably, the workbench is equipped with a control system, and the gas control component, the first limit switch, the second limit switch, and the electric telescopic column are all electrically connected to the control system.

[0017] The beneficial effects of this invention are: 1. Through the setting of clamping components and flexible pads, the two end faces of the resistor sheet can be completely covered under the action of the second limit switch, electric telescopic column, control system, etc., preventing the end faces of the resistor sheet from being coated and only coating the sides of the resistor sheet. This ensures the performance of the two end faces of the resistor sheet and avoids the need for separate cleaning of the end faces of the resistor sheet later, reducing the labor intensity of the workers. At the same time, the driving component and the passive component enable the resistor sheet to rotate during coating, making the sides of the resistor sheet coated more evenly and preventing uneven coating of the sides of the resistor sheet. Through the setting of calibration components, first chamber, second chamber, and gas control components, the calibration component contacts the resistor sheet before clamping it, so that the calibration component uses its arc surface to support the resistor sheet. Then, when the clamping component clamps the resistor sheet, the center of the resistor sheet is aligned with the center of the two clamping components. This prevents the problem that the flexible pad cannot completely cover the resistor sheet when there is a slight deviation in the placement of the resistor sheet by the feeding device, and further increases the stability of coating the sides of the resistor sheet.

[0018] 2. Through the set adsorption groove, flexible pad, first chamber, second chamber and connecting tube and other components, after the resistor sheet is fixed, the two ends of the resistor sheet are firmly adsorbed on the flexible pad, thereby ensuring that the position of the resistor sheet is not affected by mechanical transmission vibration, thus improving the stability of the coating even when the resistor sheet is subjected to vibration. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the left view of the entire cross section of the present invention.

[0021] Figure 3This is a schematic diagram of the main view of the entire section of the present invention.

[0022] Figure 4 This is a schematic diagram of the cross-sectional plane structure of the adsorption element in this invention.

[0023] Figure 5 This is a cross-sectional view of the moving part in the communicating groove of the present invention.

[0024] Figure 6 This is a schematic diagram of the cross-sectional plane of the moving part at the calibration part in this invention.

[0025] The attached figures are labeled as follows: 1. Feeding device; 2. Coating device; 3. Unloading device; 4. Workbench; 401. Driving component; 402. Passive component; 403. Moving frame; 404. Guide groove; 405. Moving rod; 5. Moving component; 6. Clamping component; 601. Electric telescopic column; 602. Adsorption tank; 7. Adsorption component; 701. Movable plate; 702. First chamber; 703. Second chamber; 8. Calibration component; 801. Connecting groove; 9. Coating component; 901. Liquid tank; 902. Pulley; 903. Transmission belt; 10. Reciprocating screw; 11. Gas control component; 1101. Connecting pipe; 12. Control system; 13. First limit switch. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1 Zinc oxide resistors are used as an important core component in surge arresters, protective devices for the safe operation of the power industry. Because the sides of the disc-shaped zinc oxide resistors are rough, they are easily contaminated and absorb moisture, which reduces the performance of the resistors. In order to prevent the zinc oxide resistors from being damaged under overvoltage and high current impacts and thus causing flashover, a glaze coating with high insulation, high strength, high temperature resistance, high current resistance and moisture resistance is used to protect the resistors.

[0028] Currently, when coating zinc oxide resistor sheets, only the sides need to be coated, while the two end faces must be kept clean to maintain the electrode performance at both ends of the resistor sheet. Existing devices can only simply clamp the resistor sheet and then contact it with the coating component, causing the coating component to rotate and coat the sides of the resistor sheet. However, they cannot cover the end faces of the resistor sheet. Furthermore, because the resistor sheet cannot rotate, the coating on the sides of the resistor sheet is uneven, resulting in a high defect rate of the processed resistor sheet products.

[0029] Please see Figures 1 to 6 As shown, a coating apparatus for producing resistor sheets according to an embodiment of the present invention includes a feeding device 1, a coating device 2, and a discharging device 3. The coating device 2 includes a worktable 4, on which a movable component 5 is provided. Two movable clamping components 6 are provided on the movable component 5. A coating component 9 is provided inside the worktable 4. When the two clamping components 6 clamp the resistor sheet and move it, the two clamping components 6 can drive the resistor sheet to rotate synchronously and cause the coating component 9 to coat the side of the resistor sheet. Two suction components 7 are rotatably provided on both sides of the movable component 5. An electric telescopic column 601 is fixedly provided inside the suction component 7. The telescopic end of each electric telescopic column 601 is fixedly connected to the corresponding clamping component 6. A driving component 401 is fixedly provided on both sides of the worktable 4. The two suction components 7 are rotatably connected to the movable component 5. A passive component 402 that can cooperate with the corresponding driving component 401 is fixedly provided on each suction component 7. A movable frame 403 is provided on the worktable 4. A guide groove 40 is provided on the movable component 5. 4. A movable rod 405 is slidably provided in the guide groove 404. The movable rod 405 is slidably connected to the movable frame 403. Second limit switches are respectively provided on both sides of the guide groove 404. A first motor is provided in the worktable 4. A reciprocating screw 10 is coaxially fixed at the output end of the first motor. The reciprocating screw 10 is connected to the movable frame 403 to drive the movable frame 403 to move back and forth. A liquid tank 901 is provided in the worktable 4. Two pulleys 902 are rotatably provided in the liquid tank 901. The two pulleys 902 are connected by a transmission belt 903. The outer wall of the transmission belt 903 is fixedly connected to the coating part 9. A second motor is provided in the worktable 4. The second motor is coaxially fixedly connected to one of the pulleys 902. A control system 12 is provided on the worktable 4. The gas control component 11, the first limit switch 13, the second limit switch, and the electric telescopic column 601 are all electrically connected to the control system 12. The second limit switch, the first motor, and the second motor are not shown in the figure. This technology is prior art and will not be described in detail here.

[0030] In use, the control system 12 first starts the first motor and the second motor. The second motor drives the pulley 902 to rotate. The pulley 902 drives another pulley 902 to rotate through the transmission belt 903. The transmission belt 903 drives the coated part 9 to rotate. The first motor drives the reciprocating screw 10 to rotate. The reciprocating screw 10 drives the moving frame 403 to move to the feeding device 1. At this time, the feeding device 1 moves the resistor sheet to a suitable position. The reciprocating screw 10 drives the moving frame 403 to move in the guide groove 404. After moving to a certain position, the moving rod 405 moves upward along the guide groove 404.

[0031] The guide groove 404 has a U-shaped structure that is wider at the top and narrower at the bottom. The moving part 5 is equipped with a drive component, such as a motor, that can rotate it. This is not shown in detail in the figure. Alternatively, any other component capable of rotating the moving part 5 at a specific position can be used. For example, racks can be provided on both sides of the guide groove 404, and gears can mesh with the racks on the moving rod 405. This allows the moving rod 405 to rotate the moving part 5 after moving to a certain position, thereby rotating the clamping component 6 to a position where it can clamp the resistor sheet. The moving rod 405 has a cylindrical center and square sides. Multiple rotating wheels can be provided at the sliding positions of the moving rod 405 and the guide groove 404 to reduce friction and wear on the sidewalls of the guide groove 404 and the moving rod 405. This technology is not shown in the figure.

[0032] In this design, a square-shaped movable rod 405 moves within a guide groove 404. When it reaches the turning point of the guide groove 404, the sliding position between the middle of the movable rod 405 and the movable frame 403 is circular, and the guide groove 404 and the square part of the movable rod 405 are matched. Therefore, the movable rod 405 can rise along the rising part of the guide groove 404 and swing. At the same time, the movable rod 405 is fixedly connected to the movable component 5, so that when the angle of the movable rod 405 changes, it drives the movable component 5 to swing. This can be achieved using any of the existing technologies. Furthermore, the square position of the movable rod 405 is matched with the guide groove 404, which enables the movable rod 405 to slide within the guide groove 404.

[0033] Meanwhile, flexible pads are fixedly provided at the opposite ends of the two clamping members 6. The flexible pads are provided with connecting grooves that communicate with the corresponding adsorption grooves 602. The diameters of the flexible pads, clamping members 6 and resistor sheets are all equal, so that when the flexible pads come into contact with the resistor sheets, they can fully cover the end face of the resistor sheets without covering the sides of the resistor sheets. This prevents the end face of the resistor sheets from being coated with a coating liquid and thus preventing the two end faces of the resistor sheets from being unable to connect properly when used as electrodes.

[0034] Subsequently, the reciprocating screw 10 drives the moving frame 403 to move in the opposite direction. At the same time, the moving rod 405 swings in the opposite direction under the action of the driving component, which in this solution is the rising or falling part of the guide groove 404, that is, the bends on both sides of the guide groove 404. This causes the moving part 5 to rotate to the initial horizontal state. Simultaneously, the moving part 5 and the moving rod 405 move downward under the action of the guide groove 404, so that the resistor sheet can contact the coating part 9. At the same time, the passive part 402 cooperates with the driving part 401. The passive part 402 can be selected as a gear, and the driving part 401 can be selected as a matching rack. This causes the passive part 402 to rotate, and the coating part 9 rotates synchronously. This allows the coating liquid to continuously contact the side of the resistor sheet, making the side of the resistor sheet more evenly coated.

[0035] After moving to another turning point of the guide groove 404, the moving rod 405 and the moving part 5 move upward again. At the same time, the driving component drives the moving rod 405 to swing the moving part 5 towards the feeding device 3. At the same time, another second limit switch is set here. After the feeding device 3 can receive the position of the coated resistor sheet, it touches the second limit switch, so that when the feeding device 3 can receive the position of the coated resistor sheet, the control system 12 controls the two electric telescopic columns 601 to retract. The feeding device 3 receives the resistor sheet, so that the clamping part 6 and the flexible pad no longer clamp the resistor sheet. The feeding device 3 transfers the resistor sheet to the corresponding position for subsequent processing. The loading device 1 and the feeding device 3 both adopt existing technology and will not be described in detail here.

[0036] With the clamping component 6 and flexible pad, the two end faces of the resistor sheet can be completely covered under the action of the second limit switch, electric telescopic column 601, control system 12, etc., preventing the end faces of the resistor sheet from being coated and only coating the sides of the resistor sheet. This ensures the performance of the two end faces of the resistor sheet and prevents the need for separate cleaning of the end faces of the resistor sheet later, reducing the labor intensity of workers. At the same time, the driving component 401 and the passive component 402 enable the resistor sheet to rotate during coating, making the sides of the resistor sheet coated more evenly and preventing uneven coating of the sides of the resistor sheet.

[0037] Example 2 In practical use, it was found that although the above technical solution achieved the effect of uniformly coating the sides of the resistor sheet under normal conditions, in actual operation, due to the slight deviation in the position of the resistor sheet during feeding by the feeding device 1, the center of the resistor sheet and the center of the two clamping parts 6 are not on the same straight line when clamping the resistor sheet. As a result, when clamping the resistor sheet, part of the end face of the resistor sheet may be exposed through the clamping parts 6. Thus, the end face of the resistor sheet is coated, while the farthest part of the end face of the resistor sheet may have insufficient side coating, resulting in the resistor sheet not meeting production requirements.

[0038] Based on the above embodiments, in order to solve the above technical problems, please refer to... Figures 1 to 6 As shown, the technical solution includes a movable component 5, on which two rotatable adsorption components 7 are provided. The adsorption components 7 are rotatably connected to the movable component 5. Multiple calibration components 8 are provided on the movable component 5. When the clamping component 6 is about to clamp the resistor sheet, the calibration component 8 can contact the resistor sheet at a faster speed and lift it up, thereby aligning the center of the resistor sheet with the center of the clamping component 6. This allows the two clamping components 6 to completely cover the two end faces of the resistor sheet. Each adsorption component 7 has a sliding movable plate 701, which divides the corresponding adsorption component 7 into a first chamber 702 and a second chamber 703. The first chamber 702 is located near the corresponding electric telescopic column 601. Each of the 01 and the corresponding clamping member 6 is provided with an adsorption groove 602 that is interconnected with the corresponding first chamber 702. The adsorption groove 602 is a one-way channel with its opening facing the first chamber 702. The moving member 5 is provided with two first limit switches 13 corresponding to the clamping member 6. Each calibration member 8 is slidably connected to the moving member 5 through a sliding groove. The moving member 5 is provided with multiple connecting grooves 801 that are connected to the corresponding sliding grooves. Each first chamber 702 is connected to the corresponding connecting groove 801 through a through hole. The inward end face of the calibration member 8 is an arc-shaped surface. The moving member 5 is provided with a gas control component 11. Both ends of the gas control component 11 are connected to the corresponding second chamber 703 through connecting pipes 1101.

[0039] During use, as the electric telescopic column 601 moves the clamping member 6 and the flexible pad closer to the resistor, the clamping member 6 or the flexible pad contacts the first limit switch 13, thereby causing the control system 12 to activate the gas control component 11. The gas control component 11 then supplies gas to the second chamber 703 through the connecting pipe 1101, causing the movable plate 701 to squeeze the gas in the first chamber 702 under the action of gas pressure. Since the adsorption groove 602 is a one-way channel with its opening facing the first chamber 702, the gas is exhausted into the sliding groove through the through hole and the connecting groove 801. The movable plate 701 moves towards the resistor. Due to the increased pressure in the first chamber 702, the calibration member 8 moves rapidly towards the resistor. The moving speed of the calibration member 8 is faster than the extension speed of the electric telescopic column 601.

[0040] This allows the calibrator 8 to support the resistor sheet using its arc-shaped surface. The inner end faces of multiple calibrators 8 are all on the same arc-shaped surface as the outer wall of the clamping member 6. This ensures that when the clamping member 6 clamps the resistor sheet, the center of the resistor sheet is aligned with the center of the two clamping members 6. When the two clamping members 6 are no longer in contact with the first limit switch 13, the control system 12 controls the gas control component 11 to extract gas, thereby causing the movable plate 701 to move back to its original position. This allows the first chamber 702 to extract gas through the through hole, the connecting groove 801, and the sliding groove, causing the calibrator 8 to return to its original position.

[0041] When the resistor is released, the two electric telescopic columns 601 move in opposite directions. When the first limit switch 13 is touched again, the control system 12 does not control the gas control component 11 to start, so that the calibration component 8 cannot contact the resistor and prevent scratches on the side of the resistor. Then, after the moving component 5 swings to the feeding device 3 at a certain angle, the feeding device 3 receives the resistor by cooperating. This function can be achieved by any structure or electrical component that can achieve this method, which will not be described in detail here.

[0042] By using the calibration element 8, the first chamber 702, the second chamber 703, and the gas control component 11, the calibration element 8 contacts the resistor sheet before clamping it, allowing the calibration element 8 to lift the resistor sheet using its curved surface. Then, when the clamping element 6 clamps the resistor sheet, the center of the resistor sheet is aligned with the center of the two clamping elements 6. This prevents the problem that the flexible pad cannot completely cover the resistor sheet when there is a slight deviation in the placement of the resistor sheet by the feeding device 1, further increasing the stability of the coating on the side of the resistor sheet.

[0043] Example 3 After the resistor sheet is calibrated by the calibration piece 8, and the clamping piece 6 and the flexible pad clamp and completely cover the resistor sheet, due to the vibration of the mechanical transmission, a certain slight displacement may occur between the resistor sheet and the flexible pad during the vibration process. As a result, the resistor sheet cannot be completely covered by the flexible pad, resulting in uneven coating on the side of the resistor sheet and a small part of the cross section being coated. This affects the performance stability of the resistor sheet electrodes, resulting in imperfect function of the resistor sheet and failure to meet the usage requirements.

[0044] Based on the above embodiments, in order to solve the above technical problems, please refer to... Figures 1 to 6 As shown, the technical solution adopted includes a moving part 5, on which multiple calibration parts 8 are provided. When the clamping part 6 is about to clamp the resistor sheet, the calibration parts 8 can contact the resistor sheet at a faster speed and lift the resistor sheet, thereby aligning the center of the resistor sheet with the center of the clamping part 6, so that the two clamping parts 6 completely cover the two end faces of the resistor sheet respectively, and at the same time, the two adsorption parts 7 adsorb the two end faces of the resistor sheet respectively.

[0045] In practical use, after the clamping member 6 and the flexible pad completely cover the resistive element, the clamping member 6 disengages from the first limit switch 13. Subsequently, the control system 12 activates the gas control component 11, causing the gas control component 11 to draw gas from the second chamber 703 through the connecting pipe 1101. The connecting pipe 1101 can be rotatably connected to the adsorption member 7 through other components and communicate with the second chamber 703. The sealing technology can adopt any existing technology, such as a rotary sealing connection. This technology can be implemented using existing technology and is not shown in the figure, allowing the movable plate 701 to... Under pressure, the material moves away from the resistive element, causing the first chamber 702 to draw the flexible pad and the resistive element together through the adsorption groove 602. This ensures that both ends of the resistive element are firmly adsorbed onto the corresponding flexible pads, preventing displacement between the resistive element and the flexible pad during vibration and thus ensuring that the resistive element does not shift. This also ensures that the coating is applied only to the sides of the resistive element, increasing the stability of the coating process and reducing the impact of vibration on the resistive element during mechanical transmission.

[0046] By using components such as the adsorption groove 602, flexible pad, first chamber 702, second chamber 703, and connecting pipe 1101, the two ends of the resistor sheet are firmly adsorbed onto the flexible pad after the resistor sheet is fixed. This ensures that the position of the resistor sheet is not affected by mechanical transmission vibration, thereby improving the stability of the coating process even when the resistor sheet is subjected to vibration.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A coating apparatus for producing resistor sheets, comprising a feeding device, a coating device, and a discharging device, characterized in that, The coating device includes a worktable with a movable component. The movable component has two clamping components and two adsorption components. Multiple calibration components are also provided on the movable component. When the clamping components are about to clamp the resistor sheet, the calibration components contact the resistor sheet at a faster speed and lift it up, thereby aligning the center of the resistor sheet with the center of the clamping components. This allows the two clamping components to completely cover both end faces of the resistor sheet, while the two adsorption components adsorb both end faces of the resistor sheet. A coating component is located within the worktable. As the two clamping components move while holding the resistor sheet, they drive the resistor sheet to rotate synchronously, allowing the coating component to coat the sides of the resistor sheet.

2. The coating apparatus for producing resistor sheets according to claim 1, characterized in that, Both adsorption elements are rotatably connected to the moving element. An electric telescopic column is fixedly installed inside the adsorption element, and the telescopic end of the electric telescopic column is fixedly connected to the clamping element.

3. The coating apparatus for producing resistor sheets according to claim 2, characterized in that, Each of the adsorption components is slidably provided with a movable plate, which divides the corresponding adsorption component into a first chamber and a second chamber. The electric telescopic column and the corresponding clamping component are each provided with an adsorption groove that communicates with each other. The adsorption groove is a one-way channel with its opening facing the first chamber. The moving component is provided with two first limit switches corresponding to the clamping component.

4. The coating apparatus for producing resistor sheets according to claim 3, characterized in that, Each of the calibration components is slidably connected to the moving component via a sliding groove. The moving component has multiple communicating grooves that communicate with the corresponding sliding grooves. Each of the first chambers is connected to the corresponding communicating grooves via through holes. The inward-facing end face of the calibration component is an arc-shaped surface.

5. The coating apparatus for producing resistor sheets according to claim 4, characterized in that, The movable component is equipped with a gas control component, and both ends of the gas control component are connected to the corresponding second chamber through connecting pipes.

6. The coating apparatus for producing resistor sheets according to claim 5, characterized in that, Both sides of the workbench are fixedly provided with driving components, and both adsorption components are rotatably connected to the moving component. Each adsorption component is fixedly provided with a passive component that can cooperate with the corresponding driving component.

7. A coating apparatus for producing resistor sheets according to claim 6, characterized in that, The workbench is provided with a movable frame, the movable part is provided with a guide groove, a movable rod is slidably provided in the guide groove, the movable rod is slidably connected to the movable frame, and a second limit switch is provided on both sides of the guide groove.

8. A coating apparatus for producing resistor sheets according to claim 7, characterized in that, The workbench is equipped with a first motor, and a reciprocating screw is coaxially fixed at the output end of the first motor. The reciprocating screw is connected to the moving frame to drive the moving frame to move back and forth.

9. A coating apparatus for producing resistor sheets according to claim 8, characterized in that, The workbench is equipped with a liquid tank, and two pulleys are rotatably mounted in the liquid tank. The two pulleys are connected by a transmission belt, and the outer wall of the transmission belt is fixedly connected to the coated part. A second motor is installed in the workbench, and the second motor is coaxially fixedly connected to one of the pulleys.

10. A coating apparatus for producing resistor sheets according to claim 9, characterized in that, The workbench is equipped with a control system, and the gas control component, the first limit switch, the second limit switch, and the electric telescopic column are all electrically connected to the control system.

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