A coating device and coating method for high voltage anti-sulfurization thick film chip resistor

Abstract

The present invention belongs to the technical field of resistor processing, and discloses a coating device for high-pressure anti-sulfurization thick film chip resistors and a coating method thereof, comprising a workbench, a liquid storage tank is arranged above the workbench, both ends of the liquid storage tank are fixedly connected with support plates, the two support plates are fixedly installed on the top of the workbench, a resistor body is arranged below the liquid storage tank, the resistor body is installed on the top of the workbench through a bearing assembly, and a spraying assembly is arranged above the resistor body. When processing the resistor, a water pump and a first motor are started, and the paint in the support plate is extracted through a first connecting pipe and connected through a second connecting pipe, and finally sprayed from a nozzle to the surface of the resistor body, and at the same time, a spraying seat reciprocates above the resistor body, and the bearing seat rotates to drive the resistor body to rotate, so that the surface of the resistor body can be fully sprayed, ensuring uniform coating thickness and stability of resistor performance and production quality.

Description

Technical Field

[0001] The invention belongs to the technical field of resistor processing, and in particular relates to a coating device and a coating method for a high-voltage anti-sulfurization thick-film chip resistor. Background Art

[0002] High voltage anti-sulfur thick film chip resistor is a specially designed electronic component, which combines the characteristics of high voltage thick film chip resistor with anti-sulfurization ability to meet the high requirements of resistor stability and reliability in harsh environments.

[0003] In order to enhance the resistor's anti-sulfurization ability, thereby extending its service life and improving its reliability, high-voltage anti-sulfur thick film chip resistors require protective coatings to be applied using specialized equipment during the production process.

[0004] After searching, such as patent: CN214132314U, a uniform dipping device for resistor production, includes a workbench, a plurality of groups of support rods are arranged at the bottom end of the workbench, the bottom ends of the workbench are respectively connected to the top ends of the plurality of support rods, a plurality of fixed frames are arranged at the top end of the workbench, the top end of the workbench is connected to the bottom ends of the plurality of fixed frames; a telescopic sleeve rod is arranged at the top end of the workbench, the top end of the workbench is connected to the bottom end of the telescopic sleeve rod, a telescopic rod is arranged at the top end of the telescopic sleeve rod, the top end of the telescopic sleeve rod is connected to the bottom end of the telescopic rod, a telescope is arranged at the top end of the telescopic rod, the top end of the telescopic rod is connected to the bottom end of the telescope, a telescopic plate is telescopically arranged at the right end of the telescope, the right end of the telescope is connected to the left end of the telescopic plate, a storage tank is arranged at the top end of the telescopic plate, and the top end of the telescopic plate is connected to the bottom end of the storage tank.

[0005] When processing resistors, current coating equipment is unable to achieve comprehensive spraying of resistors, which not only causes uneven coating thickness, but also affects the stability of resistor performance and production quality. Summary of the invention

[0006] The object of the present invention is to provide a coating device and a coating method for high voltage anti-sulfurization thick film chip resistors to solve the problems raised in the above background technology.

[0007] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a coating device for high-voltage anti-sulfurization thick film chip resistors, comprising a workbench, a liquid storage tank is arranged above the workbench, both ends of the liquid storage tank are fixedly connected with support plates, and the two support plates are fixedly installed on the top of the workbench, a resistor body is arranged below the liquid storage tank, the resistor body is installed on the top of the workbench through a bearing assembly, and a spraying assembly is arranged above the resistor body; The bearing assembly includes bearing seats arranged at both ends of the resistor body, rubber pads are fixedly installed inside the two bearing seats, one end of the two bearing seats is fixedly connected to a rotating seat, and the side of the two rotating seats away from the bearing seats is installed with a moving seat through a rotating assembly, and the moving seat is slidably installed on the top of the workbench through the moving assembly; The spray assembly includes a spray seat arranged above the resistor body, the inner wall of the spray seat is threadedly connected with a reciprocating screw rod, one end of the reciprocating screw rod is installed with a first motor, the first motor is installed inside the support plate, and the inside of the spray seat is evenly provided with spray heads, the top of each of the spray heads is connected through a second connecting pipe, the top of the second connecting pipe is fixedly connected with the first connecting pipe, the top of the first connecting pipe is installed with a water pump, and the water pump is arranged at the top of the support plate; The rotating assembly includes a second rotating shaft rotatably installed inside the moving seat, one end of the second rotating shaft is fixedly connected to the rotating seat, the other end of the second rotating shaft is fixedly installed with a gear, the top end of the gear is meshed and connected with a transmission belt, two transmission wheels are installed inside the transmission belt, and the first rotating shaft is fixedly installed inside the two transmission wheels, one of the first rotating shafts is connected to the reciprocating screw through a pulley group.

[0008] As a further technical solution of the present invention, the gear is slidably connected to the support plate.

[0009] As a further technical solution of the present invention, a fixing plate is slidably mounted on the top of the bearing seat, two fixing plates are symmetrically arranged, and a first spring is arranged between the two fixing plates and the bearing seat.

[0010] As a further technical solution of the present invention, a limit block is installed on the outer wall of the first connecting pipe, and the limit block is fixedly installed on one side of the liquid storage tank.

[0011] As a further technical solution of the present invention, a protective cover is arranged below the support plate, and the protective cover is arranged outside the resistor body.

[0012] As a further technical solution of the present invention, the moving assembly includes a threaded rod embedded in the moving seat, the threaded rod is threadedly connected to the moving seat, and a second motor is installed at one end of the threaded rod.

[0013] As a further technical solution of the present invention, the bearing components are provided in multiple groups.

[0014] As a further technical solution of the present invention, a connecting plate is fixedly connected to the bottom end of the protective cover, and an electromagnet is arranged below the connecting plate.

[0015] As a further technical solution of the present invention, the connecting plate is slidably installed inside the workbench, and a second spring is arranged between the connecting plate and the workbench.

[0016] A coating method for a coating device for a high voltage anti-sulfurization thick film chip resistor comprises the following steps: S1: When coating the high-voltage anti-sulfurization thick film chip resistor, first install several resistor bodies in each group of bearing components, embed the lead-out ends of the resistor bodies into the rubber pads during installation, and use the elastic potential energy of the first spring to move the two fixing plates inward to limit and clamp the lead-out ends of the resistor bodies; S2: Then start the water pump and the first motor. When the water pump is started, the paint in the support plate is extracted through the first connecting pipe and connected through the second connecting pipe, and finally sprayed from the nozzle to the surface of the resistor body. When the water pump is started, the reciprocating screw is driven to rotate. The rotation of the reciprocating screw drives the spray seat to reciprocate above the resistor body, so as to fully spray the surface of the resistor body. S3: At the same time, the rotation of the reciprocating screw drives the first rotating shaft to rotate through the pulley group, the rotation of the first rotating shaft drives the rotation of the transmission wheel, the rotation of the transmission wheel drives the rotation of the transmission belt, the rotation of the transmission belt drives the rotation of the gear, the rotation of the gear drives the rotation of the second rotating shaft, the rotation of the second rotating shaft drives the rotation of the rotating seat, the rotation of the rotating seat drives the rotation of the bearing seat, the rotation of the bearing seat drives the rotation of the resistor body, so that the resistor body rotates under the spraying seat to perform the spraying operation; S4: After spraying, the first motor is turned off to start the electromagnet. When the first motor is turned off, the spraying operation is stopped. When the electromagnet is started, suction is generated on the connecting plate, so that the connecting plate moves downward. The movement of the connecting plate drives the movement of the protective cover, so that the protective cover is moved away from the outside of the resistor body. S5: Then the second motor is started to drive the threaded rod to rotate, the rotation of the threaded rod drives the movement of the moving seat, and the movement of the moving seat drives the resistor body to move, so that the resistor that has been sprayed under the liquid storage tank is moved away, and the resistor to be sprayed on one side is moved to the bottom of the liquid storage tank, and then the electromagnet is closed, and the elastic potential energy released by the second spring drives the connecting plate to move up, so that the protective cover moves up to cover the resistor body; S6: Finally, repeat the above steps to continuously spray the resistor.

[0017] The beneficial effects of the present invention are as follows: The present invention is arranged by cooperating with each other through a spraying component and a rotating component. When coating a high-pressure anti-sulfurization thick film chip resistor, a water pump is started, the coating in the support plate is extracted through the first connecting pipe, and the coating is connected through the second connecting pipe and finally sprayed from the nozzle to the surface of the resistor body. At the same time, the first motor is started, and the first motor drives the reciprocating screw to rotate. The rotation of the reciprocating screw drives the spray seat to reciprocate above the resistor body, so that the surface of the resistor body is fully sprayed. At the same time, the rotation of the reciprocating screw drives the first rotating shaft to rotate through the pulley group. The rotation of the first rotating shaft drives the rotation of the transmission wheel. The rotation of the transmission wheel drives the rotation of the transmission belt. The rotation of the transmission belt drives the rotation of the gear. The rotation of the gear drives the rotation of the second rotating shaft. The rotation of the second rotating shaft drives the rotation of the rotating seat. The rotation of the rotating seat drives the rotation of the bearing seat. The rotation of the bearing seat drives the resistor body to rotate, so that the resistor body rotates below the spray seat, so that the surface of the resistor body can be fully sprayed, ensuring uniform coating thickness and stability of resistor performance and production quality.

[0018] The present invention arranges a moving component. When the resistor below the support plate is sprayed, the second motor is started to drive the threaded rod to rotate. The rotation of the threaded rod drives the movement of the moving seat. The movement of the moving seat drives the resistor body to move, so that the resistor below the support plate that has been sprayed is removed, which is convenient for installing or disassembling the resistor.

[0019] The present invention is provided with multiple groups of bearing components, and resistors are installed inside each group of bearing components. After the resistors under the liquid storage tank are sprayed, they are moved away by moving the components, and the unsprayed resistors are moved to the bottom of the support plate for continuous operation, thereby improving the processing efficiency of the resistors. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 It is a schematic cross-sectional view of the structure of the spraying seat of the present invention; Figure 5 It is a structural schematic diagram of the bearing seat of the present invention; Figure 6 It is a schematic cross-sectional view of the structure of the bearing seat of the present invention.

[0021] In the figure: 1. workbench; 2. resistor body; 3. liquid storage tank; 4. support plate; 5. rubber pad; 6. water pump; 7. first connecting pipe; 8. spray seat; 9. second connecting pipe; 10. nozzle; 11. reciprocating screw; 12. first motor; 13. moving seat; 14. rotating seat; 15. bearing seat; 16. limit block; 17. pulley group; 18. first rotating shaft; 19. transmission wheel; 20. transmission belt; 21. gear; 22. second rotating shaft; 23. fixed plate; 24. first spring; 25. threaded rod; 26. second motor; 27. protective cover; 28. connecting plate; 29. ​​second spring; 30. electromagnet. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figures 1 to 6 As shown, in an embodiment of the present invention, a coating device for a high-voltage anti-sulfurization thick film wafer resistor comprises a workbench 1, a liquid storage tank 3 is arranged above the workbench 1, both ends of the liquid storage tank 3 are fixedly connected with support plates 4, and the two support plates 4 are fixedly installed on the top of the workbench 1, a resistor body 2 is arranged below the liquid storage tank 3, the resistor body 2 is installed on the top of the workbench 1 through a bearing component, and a spraying component is arranged above the resistor body 2; The bearing assembly includes bearing seats 15 arranged at both ends of the resistor body 2, the insides of the two bearing seats 15 are fixedly installed with rubber pads 5, one end of the two bearing seats 15 is fixedly connected to a rotating seat 14, and the sides of the two rotating seats 14 away from the bearing seats 15 are both installed with a moving seat 13 through a rotating assembly, and the moving seat 13 is slidably installed on the top of the workbench 1 through a moving assembly; The spraying assembly includes a spraying seat 8 arranged above the resistor body 2, the inner wall of the spraying seat 8 is threadedly connected with a reciprocating screw rod 11, one end of the reciprocating screw rod 11 is installed with a first motor 12, the first motor 12 is installed inside the support plate 4, and the inside of the spraying seat 8 is evenly provided with spray heads 10, the top of each spray head 10 is connected through a second connecting pipe 9, the top of the second connecting pipe 9 is fixedly connected with the first connecting pipe 7, the top of the first connecting pipe 7 is installed with a water pump 6, and the water pump 6 is arranged at the top of the support plate 4; The rotating assembly includes a second rotating shaft 22 rotatably installed inside the movable seat 13, one end of the second rotating shaft 22 is fixedly connected to the rotating seat 14, and the other end of the second rotating shaft 22 is fixedly installed with a gear 21, and the top end of the gear 21 is meshed and connected with a transmission belt 20, and two transmission wheels 19 are installed inside the transmission belt 20, and the first rotating shaft 18 is fixedly installed inside the two transmission wheels 19, and one of the first rotating shafts 18 is connected to the reciprocating screw 11 through a pulley group 17.

[0024] The resistor body 2 is composed of a resistor body and a lead-out terminal. When installing the resistor body 2, the lead-out terminal of the resistor body 2 is placed inside the liquid storage tank 3 workbench 1; The liquid storage tank 3 workbench 1 is provided with a rubber pad 5, which itself has a certain elastic force and is used to clamp the lead-out end of the resistor body 2; The surface of the transmission belt 20 is evenly provided with tooth blocks, which are meshed with the gear 21 and are used to make the gear 21 always rotate in one direction; When coating the high-pressure anti-sulfurization thick film chip resistor, the water pump 6 is started, the coating in the support plate 4 is extracted through the first connecting pipe 7 and connected through the second connecting pipe 9 and finally sprayed from the nozzle 10 to the surface of the resistor body 2; At the same time, the first motor 12 is started, and the first motor 12 drives the reciprocating screw 11 to rotate. The rotation of the reciprocating screw 11 drives the spray seat 8 to move back and forth above the resistor body 2, so as to spray the surface of the resistor body 2 comprehensively; At the same time, the rotation of the reciprocating screw 11 drives the first rotating shaft 18 to rotate through the pulley group 17, the rotation of the first rotating shaft 18 drives the rotation of the transmission wheel 19, the rotation of the transmission wheel 19 drives the rotation of the transmission belt 20, the rotation of the transmission belt 20 drives the rotation of the gear 21, the rotation of the gear 21 drives the rotation of the second rotating shaft 22, the rotation of the second rotating shaft 22 drives the rotation of the rotating seat 14, the rotation of the rotating seat 14 drives the rotation of the bearing seat 15, the rotation of the bearing seat 15 drives the resistor body 2 to rotate, so that the resistor body 2 rotates under the spray seat 8, so that the surface of the resistor body 2 can be fully sprayed, ensuring the uniform coating thickness and the stability of the resistor performance and production quality.

[0025] like Figures 1 to 3 As shown, the gear 21 is slidably connected to the support plate 4 .

[0026] like Figure 6 As shown, a fixing plate 23 is slidably mounted on the top of the bearing seat 15 , and two fixing plates 23 are symmetrically arranged. A first spring 24 is arranged between the two fixing plates 23 and the bearing seat 15 .

[0027] When installing the resistor, the lead-out end of the resistor body 2 is embedded into the interior of the bearing seat 15, and the two fixing plates 23 are moved inward by the elastic potential energy of the first spring 24 to limit and clamp the lead-out end of the resistor body 2, so as to ensure the stability of the resistor during the rotation process; When taking out the resistor, the two fixing plates 23 are pushed outwards to take it out.

[0028] like Figures 1 to 3 As shown, a limit block 16 is installed on the outer wall of the first connecting pipe 7 , and the limit block 16 is fixedly installed on one side of the liquid storage tank 3 .

[0029] When the spraying seat 8 is in the process of reciprocating movement, the first connecting pipe 7 is limited by the limiting block 16 .

[0030] like Figures 1 to 3 As shown, a protective cover 27 is disposed below the support plate 4 , and the protective cover 27 is disposed outside the resistor body 2 .

[0031] During the spraying process, the protective cover 27 is located at the bottom of the spraying seat 8 and the outside of the resistor body 2, which is used to reduce the splashes generated during the spraying process, helps to keep the spraying area clean, and thus improves the spraying quality.

[0032] like Figure 1 and Figure 2 As shown, the moving assembly includes a threaded rod 25 embedded in the moving seat 13 , the threaded rod 25 is threadedly connected to the moving seat 13 , and a second motor 26 is installed at one end of the threaded rod 25 .

[0033] When the resistor under the support plate 4 is sprayed, the second motor 26 is started to drive the threaded rod 25 to rotate. The rotation of the threaded rod 25 drives the movement of the movable seat 13. The movement of the movable seat 13 drives the resistor body 2 to move, so that the resistor under the support plate 4 that has been sprayed is removed, which is convenient for installing or removing the resistor.

[0034] like Figure 1 and Figure 2 As shown, there are multiple groups of bearing components.

[0035] Resistors are installed inside each group of bearing components. When the resistors under the liquid storage tank 3 are sprayed, they are removed by moving the components, and the unsprayed resistors are moved to the bottom of the support plate 4 for continuous operation, thereby improving the processing efficiency of the resistors. Since the resistors need to dry for a while after processing, multiple sets of carrying components are set up so that the sprayed resistors can be moved aside with enough time to wait for drying, so as to ensure the processing quality of the resistors.

[0036] like Figures 1 to 6As shown, a connecting plate 28 is fixedly connected to the bottom end of the protective cover 27 , and an electromagnet 30 is disposed below the connecting plate 28 .

[0037] The electromagnet 30 is magnetically connected to the bottom end of the connecting plate 28; When the resistor is sprayed, the electromagnet 30 is energized to generate suction on the connecting plate 28, so that the connecting plate 28 moves downward. The movement of the connecting plate 28 drives the movement of the protective cover 27, so that the protective cover 27 is removed from the outside of the resistor body 2, which is convenient for removing the processed resistor and the entry of subsequent resistors.

[0038] Figure 2 As shown, the connecting plate 28 is slidably installed inside the workbench 1 , and a second spring 29 is arranged between the connecting plate 28 and the workbench 1 .

[0039] When the resistor to be sprayed moves to below the support plate 4, the electromagnet 30 is powered off to release the elastic potential energy through the second spring 29 to drive the connecting plate 28 to move upward, so that the protective cover 27 moves upward to cover the resistor body 2 for protection.

[0040] A coating method for a coating device for a high voltage anti-sulfurization thick film chip resistor comprises the following steps: S1: When coating the high-voltage anti-sulfurization thick film chip resistor, firstly install several resistor bodies 2 in each group of bearing components, and embed the lead-out ends of the resistor bodies 2 into the rubber pads 5 during installation, and use the elastic potential energy of the first spring 24 to move the two fixing plates 23 inward to limit and clamp the lead-out ends of the resistor bodies 2; S2: Then start the water pump 6 and the first motor 12. When the water pump 6 is started, the paint in the support plate 4 is extracted through the first connecting pipe 7 and connected through the second connecting pipe 9, and finally sprayed from the nozzle 10 to the surface of the resistor body 2. When the water pump 6 is started, the reciprocating screw 11 is driven to rotate. The rotation of the reciprocating screw 11 drives the spray seat 8 to reciprocate above the resistor body 2, so as to fully spray the surface of the resistor body 2; S3: At the same time, the rotation of the reciprocating screw 11 drives the first rotating shaft 18 to rotate through the pulley group 17, the rotation of the first rotating shaft 18 drives the rotation of the transmission wheel 19, the rotation of the transmission wheel 19 drives the rotation of the transmission belt 20, the rotation of the transmission belt 20 drives the rotation of the gear 21, the rotation of the gear 21 drives the rotation of the second rotating shaft 22, the rotation of the second rotating shaft 22 drives the rotation of the rotating seat 14, the rotation of the rotating seat 14 drives the rotation of the bearing seat 15, the rotation of the bearing seat 15 drives the resistor body 2 to rotate, so that the resistor body 2 rotates below the spray seat 8 to perform the spraying operation; S4: After spraying, the first motor 12 is turned off and the electromagnet 30 is started. When the first motor 12 is turned off, the spraying operation is stopped. When the electromagnet 30 is started, a suction force is generated on the connecting plate 28, so that the connecting plate 28 moves downward. The movement of the connecting plate 28 drives the movement of the protective cover 27, so that the protective cover 27 is moved away from the outside of the resistor body 2; S5: Then the second motor 26 is started to drive the threaded rod 25 to rotate, the rotation of the threaded rod 25 drives the movement of the movable seat 13, and the movement of the movable seat 13 drives the resistor body 2 to move, so that the resistor that has been sprayed under the liquid storage tank 3 is moved away, and the resistor to be sprayed on one side is moved to the bottom of the liquid storage tank 3, and then the electromagnet 30 is turned off, and the elastic potential energy released by the second spring 29 drives the connecting plate 28 to move up, so that the protective cover 27 moves up to cover the resistor body 2; S6: Finally, repeat the above steps to continuously spray the resistor.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coating device for high voltage anti-sulfurization thick film chip resistors, comprising a workbench (1), characterized in that: A liquid storage tank (3) is arranged above the workbench (1), and both ends of the liquid storage tank (3) are fixedly connected to support plates (4), and the two support plates (4) are fixedly mounted on the top of the workbench (1). A resistor body (2) is arranged below the liquid storage tank (3), and the resistor body (2) is mounted on the top of the workbench (1) via a bearing assembly. A spraying assembly is arranged above the resistor body (2); The bearing assembly comprises bearing seats (15) arranged at both ends of the resistor body (2), the insides of the two bearing seats (15) are fixedly installed with rubber pads (5), one end of the two bearing seats (15) is fixedly connected to a rotating seat (14), and the sides of the two rotating seats (14) away from the bearing seats (15) are installed with a moving seat (13) through a rotating assembly, and the moving seat (13) is slidably installed on the top of the workbench (1) through the moving assembly; The spray assembly comprises a spray seat (8) arranged above the resistor body (2); the inner wall of the spray seat (8) is threadedly connected to a reciprocating screw (11); one end of the reciprocating screw (11) is mounted with a first motor (12); the first motor (12) is mounted inside the support plate (4); spray heads (10) are evenly arranged inside the spray seat (8); the top end of each spray head (10) is connected via a second connecting pipe (9); the top end of the second connecting pipe (9) is fixedly connected to the first connecting pipe (7); the top end of the first connecting pipe (7) is mounted with a water pump (6); the water pump (6) is arranged at the top end of the support plate (4); The rotating assembly comprises a second rotating shaft (22) rotatably mounted inside the movable seat (13), one end of the second rotating shaft (22) being fixedly connected to the rotating seat (14), the other end of the second rotating shaft (22) being fixedly mounted with a gear (21), the top end of the gear (21) being meshedly connected with a transmission belt (20), the transmission belt (20) being internally mounted with two transmission wheels (19), the two transmission wheels (19) both being internally fixedly mounted with a first rotating shaft (18), one of the first rotating shafts (18) being connected to the reciprocating screw (11) via a pulley set (17).

2. A coating device for high voltage anti-sulfurization thick film chip resistor according to claim 1, characterized in that: The gear (21) is slidably connected to the support plate (4).

3. The coating device for high voltage anti-sulfurization thick film chip resistor according to claim 1, characterized in that: A fixing plate (23) is slidably mounted on the top of the bearing seat (15), two fixing plates (23) are symmetrically arranged, and a first spring (24) is arranged between the two fixing plates (23) and the bearing seat (15).

4. The coating device for high voltage anti-sulfurization thick film chip resistor according to claim 1, characterized in that: A limit block (16) is installed on the outer wall of the first connecting pipe (7), and the limit block (16) is fixedly installed on one side of the liquid storage tank (3).

5. The coating device for high voltage anti-sulfurization thick film chip resistor according to claim 1, characterized in that: A protective cover (27) is provided below the support plate (4), and the protective cover (27) is provided outside the resistor body (2).

6. The coating device for high voltage anti-sulfurization thick film chip resistor according to claim 1, characterized in that: The moving assembly comprises a threaded rod (25) embedded in the moving seat (13), the threaded rod (25) being threadedly connected to the moving seat (13), and a second motor (26) being mounted on one end of the threaded rod (25).

7. The coating device for high voltage anti-sulfurization thick film chip resistor according to claim 1, characterized in that: The bearing components are arranged in multiple groups.

8. The coating device for high voltage anti-sulfurization thick film chip resistor according to claim 5, characterized in that: A connecting plate (28) is fixedly connected to the bottom end of the protective cover (27), and an electromagnet (30) is provided below the connecting plate (28).

9. A coating device for high voltage anti-sulfurization thick film chip resistor according to claim 8, characterized in that: The connecting plate (28) is slidably mounted inside the workbench (1), and a second spring (29) is provided between the connecting plate (28) and the workbench (1).

10. A coating method for a coating device for a high voltage anti-sulfurization thick film chip resistor, the method being applicable to a coating device for a high voltage anti-sulfurization thick film chip resistor as claimed in claims 1 to 9, characterized in that: The following steps are involved: S1: When coating a high-voltage anti-sulfurization thick film chip resistor, firstly, a plurality of resistor bodies (2) are installed in each group of bearing components. During installation, the lead ends of the resistor bodies (2) are embedded in the rubber pads (5), and the elastic potential energy of the first spring (24) causes the two fixing plates (23) to move inward to limit and clamp the lead ends of the resistor bodies (2); S2: Then the water pump (6) and the first motor (12) are started. When the water pump (6) is started, the paint in the support plate (4) is extracted through the first connecting pipe (7) and connected through the second connecting pipe (9) and finally sprayed from the spray head (10) to the surface of the resistor body (2). When the water pump (6) is started, the reciprocating screw (11) is driven to rotate. The rotation of the reciprocating screw (11) drives the spray seat (8) to reciprocate above the resistor body (2), thereby spraying the surface of the resistor body (2) in an all-round manner; S3: At the same time, the rotation of the reciprocating screw (11) drives the first rotating shaft (18) to rotate through the pulley group (17), the rotation of the first rotating shaft (18) drives the rotation of the transmission wheel (19), the rotation of the transmission wheel (19) drives the rotation of the transmission belt (20), the rotation of the transmission belt (20) drives the rotation of the gear (21), the rotation of the gear (21) drives the rotation of the second rotating shaft (22), the rotation of the second rotating shaft (22) drives the rotation of the rotating seat (14), the rotation of the rotating seat (14) drives the rotation of the bearing seat (15), the rotation of the bearing seat (15) drives the rotation of the resistor body (2), so that the resistor body (2) rotates below the spray seat (8) to perform the spraying operation; S4: After spraying, the first motor (12) is turned off and the electromagnet (30) is started. When the first motor (12) is turned off, the spraying operation is stopped. When the electromagnet (30) is started, a suction force is generated on the connecting plate (28), so that the connecting plate (28) moves downward. The movement of the connecting plate (28) drives the movement of the protective cover (27), so that the protective cover (27) is moved away from the outside of the resistor body (2); S5: Then, the second motor (26) is started to drive the threaded rod (25) to rotate, the rotation of the threaded rod (25) drives the movement of the movable seat (13), and the movement of the movable seat (13) drives the resistor body (2) to move, so that the resistor that has been sprayed under the liquid storage tank (3) is moved away, and the resistor to be sprayed on one side is moved to the bottom of the liquid storage tank (3), and then the electromagnet (30) is turned off, and the elastic potential energy released by the second spring (29) drives the connecting plate (28) to move upward, so that the protective cover (27) moves upward to cover the resistor body (2); S6: Finally, repeat the above steps to continuously spray the resistor.

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