Automatic aluminum spraying device for resistance sheet

Abstract

The application relates to the technical field of resistance sheet manufacturing, in particular to an automatic aluminum spraying device for resistance sheets, which comprises a multi-station turntable unit, a turnover unit and two groups of spraying units. The multi-station turntable unit comprises a base, a driving motor, a mounting disc and a plurality of limiting components. The driving motor is mounted on the base, and the mounting disc is coaxially mounted on the driving motor. The limiting components comprise a supporting arm, a dustproof cylinder and a fixing piece. One end of the supporting arm is connected with the mounting disc, and the other end is connected with the dustproof cylinder. The spraying unit comprises a spraying component and a recovery component. The spraying component comprises a spraying support, a spraying head, a protective cover and a first lifting cylinder. The recovery component comprises an air extraction support, a dust suction cylinder, a second lifting cylinder and an air extraction piece. The automatic turnover of the resistance sheet is facilitated, the spraying of the two opposite sides of the resistance sheet is realized, the aluminum powder scattered in the surrounding area of the spraying unit during the spraying process of the resistance sheet is conveniently collected in a centralized manner, and the waste of the aluminum powder during the spraying operation of the zinc oxide resistance sheet is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of resistance sheet manufacturing, in particular to an automatic aluminum spraying device for resistance sheets. BACKGROUND

[0002] The resistance sheet is one of the core components of a lightning arrester, and the aluminum coating of the resistance sheet is an important factor affecting the electrical performance of the resistance sheet. When the zinc oxide resistance sheet is coated with aluminum, high-purity aluminum is heated to a molten state and then sprayed onto the surface of the zinc oxide resistance sheet. An aluminum electrode is formed on the upper and lower surfaces of the zinc oxide resistance sheet by spraying an aluminum layer on each surface, so as to effectively isolate the resistance sheet from the external environment, prevent corrosive media from contacting the resistance sheet, and enhance the durability and conductivity of the resistance sheet.

[0003] In the prior art, when the zinc oxide resistance sheet is sprayed, first, the worker sets a rubber sleeve on the periphery of the zinc oxide resistance sheet, then the worker places the zinc oxide resistance sheet with the rubber sleeve set thereon on a turntable or a conveying belt, and then the zinc oxide resistance sheet is conveyed to the lower end of a spray gun by the turntable or the conveying belt. Then, the zinc oxide resistance sheet is sprayed on one side by the spray gun. After the spraying on one side of the zinc oxide resistance sheet is completed, the worker turns over the zinc oxide resistance sheet with the rubber sleeve set thereon. The turned-over zinc oxide resistance sheet is conveyed to the lower end of another spray gun by the turntable or the conveying belt. Then, the zinc oxide resistance sheet is sprayed on the other side by the other spray gun. After the spraying of the zinc oxide resistance sheet is completed, the worker takes out the zinc oxide resistance sheet with the double-side spraying completed.

[0004] In the spraying process of the zinc oxide resistance sheet, part of the aluminum powder sprayed on one side of the zinc oxide resistance sheet by the spray gun escapes to the surrounding work area, resulting in a large amount of waste of the aluminum powder. SUMMARY

[0005] In order to reduce the waste of aluminum powder in the spraying process of the zinc oxide resistance sheet, the application provides an automatic aluminum spraying device for resistance sheets.

[0006] The application provides an automatic aluminum spraying device for resistance sheets, which adopts the following technical scheme:

[0007] An automatic aluminum spraying device for resistance sheets comprises a multi-station turntable unit, a turnover unit and two groups of spraying units, and one of the spraying units, the turnover unit and the other group of spraying units are sequentially arranged along the circumferential direction of the multi-station turntable unit.

[0008] The multi-station turntable unit comprises a base, a driving motor, a mounting disc and a plurality of limiting components.

[0009] The driving motor is mounted on the base.

[0010] The mounting disc is coaxially mounted on the output shaft of the driving motor, and the mounting disc is rotationally connected with the base;

[0011] The limiting assembly is mounted on the outer sidewall of the mounting disc, and a plurality of the limiting assemblies are uniformly distributed along the circumferential direction of the mounting disc;

[0012] The limiting assembly comprises a supporting arm, a dustproof cylinder and a fixing member;

[0013] One end of the supporting arm is fixedly connected with the sidewall of the mounting disc, and the other end of the supporting arm is fixedly connected with the dustproof cylinder, and the dustproof cylinder is arranged axially parallel to the mounting disc;

[0014] The fixing member is mounted in the inner cavity of the dustproof cylinder, and the fixing member is used for limiting the resistance sheet;

[0015] The spraying unit comprises a spraying assembly and a recycling assembly;

[0016] The spraying assembly comprises a spraying support, a spray head, a protective cover and a first lifting cylinder;

[0017] The first lifting cylinder is mounted on the spraying support;

[0018] The protective cover is mounted on the piston rod of the first lifting cylinder, and the dust suction cylinder is coaxial with the dustproof cylinder;

[0019] The spray head is mounted in the inner cavity of the protective cover, and the spray head is used for spraying the resistance sheet;

[0020] The recycling assembly comprises a suction support, a dust suction cylinder, a second lifting cylinder and a suction member;

[0021] The second lifting cylinder is mounted on the suction support;

[0022] The dust suction cylinder is mounted on the piston rod of the second lifting cylinder, and the protective cover is coaxial with the dustproof cylinder;

[0023] The suction member is used for collecting dust in the inner cavities of the protective cover, the dustproof cylinder and the dust suction cylinder;

[0024] The turnover unit is used for turning over the resistance sheet.

[0025] By adopting the technical scheme, during the resistance sheet spraying operation, first, the resistance sheet is fixed on the dustproof cylinder through the fixing piece, and the side to be sprayed of the resistance sheet faces upward; then, the driving motor is adjusted, the output shaft of the driving motor drives the mounting disc to rotate along the base, the mounting disc drives the plurality of supporting arms to rotate synchronously, the supporting arms drive the dustproof cylinder to move synchronously, the dustproof cylinder drives the fixing piece and the resistance sheet to move synchronously, and the middle axes of the dustproof cylinder, the protective cover and the dust collection cylinder are located on the same axis, the first lifting cylinder is adjusted, the first lifting cylinder drives the protective cover to descend, and the lower end of the protective cover is sleeved on the upper end of the dustproof cylinder, at the same time, the second lifting cylinder is adjusted, the piston rod of the second lifting cylinder drives the dust collection cylinder to ascend, and the upper end of the dust collection cylinder is sleeved on the lower end of the dustproof cylinder; then, the nozzle is adjusted, the side of the resistance sheet is sprayed through the nozzle, at the same time, the air suction piece is adjusted, the dust in the inner cavities of the protective cover, the dustproof cylinder and the dust collection cylinder is collected, after the spraying of the resistance sheet is completed, the first lifting cylinder and the second lifting cylinder are adjusted, the first lifting cylinder drives the protective cover to ascend, so that the protective cover is located above the dustproof cylinder, and the second lifting cylinder drives the dust collection cylinder to descend, so that the dust collection cylinder is located below the dustproof cylinder; then, the driving motor is adjusted again, the output shaft of the driving motor drives the mounting disc to rotate along the base, the mounting disc drives the plurality of supporting arms to rotate synchronously, the supporting arms drive the dustproof cylinder to move synchronously, the dustproof cylinder drives the fixing piece and the resistance sheet to move synchronously, and the resistance sheet is located in the turnover unit, the turnover unit is adjusted, the turnover unit drives the resistance sheet to turn over, so that the other side to be sprayed of the resistance sheet faces upward; the driving motor is adjusted again, the output shaft of the driving motor drives the mounting disc to rotate along the base, the mounting disc drives the plurality of supporting arms to rotate synchronously, the supporting arms drive the dustproof cylinder to move synchronously, the dustproof cylinder drives the fixing piece and the resistance sheet to move synchronously, the middle axes of the dustproof cylinder, the protective cover and the dust collection cylinder in the other group of spraying units are located on the same axis, the first lifting cylinder and the second lifting cylinder are adjusted, so that the lower end of the protective cover in the other group of spraying units is sleeved on the upper end of the dustproof cylinder, and the upper end of the dust collection cylinder is sleeved on the lower end of the dustproof cylinder, the nozzle in the other group of spraying units sprays the other side of the resistance sheet, at the same time, the air suction piece is adjusted, the dust in the inner cavities of the protective cover, the dustproof cylinder and the dust collection cylinder is collected, so that the spraying of the other side of the resistance sheet is realized; the designed resistance sheet automatic spraying device is convenient for automatically turning over the resistance sheet, realizes the spraying of the resistance sheet on the relative two sides, at the same time, is convenient for collecting the aluminum powder escaping in the surrounding area of the spraying unit during the spraying process of the resistance sheet, reduces the waste of the aluminum powder during the spraying operation of the zinc oxide resistance sheet, further reduces the production cost, ensures the air quality of the working area, and improves the safety performance in the spraying operation of the zinc oxide resistance sheet.

[0026] Optionally, the fixing piece comprises an auxiliary support frame, a hollow mounting rod and a negative pressure pump;

[0027] The auxiliary support frame is coaxially installed in the inner cavity of the dustproof cylinder;

[0028] The hollow mounting rod is coaxially mounted on the auxiliary support frame, and the hollow mounting rod is rotationally connected with the auxiliary support frame, and the resistance sheet is placed at the top end of the hollow mounting rod;

[0029] The negative pressure pump is mounted on the dustproof cylinder, and the negative pressure pump is connected with the hollow mounting rod.

[0030] By adopting the above technical scheme, the resistance sheet is placed on the hollow mounting rod, then the negative pressure pump is adjusted, under the action of the negative pressure pump, the hollow mounting rod is in a vacuum state, and then the resistance sheet at the end of the hollow mounting rod is subjected to a negative pressure force, so that the resistance sheet is fixed in position; the designed fixing piece facilitates the application of negative pressure force to the resistance sheet, improves the positioning performance of the resistance sheet, avoids the resistance sheet from falling off or displacement due to the action force of the spray head in the spraying operation, and ensures the uniformity of the spraying of the resistance sheet.

[0031] Optionally, the hollow mounting rod comprises a rotating part and a connecting part coaxially arranged from high to low, the rotating part is rotationally connected with the auxiliary support frame, and the resistance sheet is mounted at one end of the rotating part away from the connecting part; the connecting part is rotationally connected with the rotating part, and the connecting part is located below the auxiliary support frame, and the connecting part is connected with the negative pressure pump.

[0032] By adopting the above technical scheme, the hollow mounting rod is segmented, the rotating part facilitates supporting the resistance sheet, and at the same time, the rotating part rotates in the spraying operation, improving the uniformity of the spraying of the resistance sheet; the connecting part facilitates mounting the negative pressure pump, and the resistance sheet is limited in position.

[0033] Optionally, the limiting assembly further comprises a rotating motor, a transmission belt, a first transmission wheel and a second transmission wheel;

[0034] The rotating motor is mounted on the supporting arm, and the rotating motor is used to drive the first transmission wheel to rotate;

[0035] The first transmission wheel is rotationally connected with the supporting arm, the second transmission wheel is coaxially sleeved on the rotating part, and the first transmission wheel and the second transmission wheel are axially parallel arranged;

[0036] The transmission belt is arranged around the first transmission wheel and the second transmission wheel, and the transmission belt passes through the dustproof cylinder.

[0037] By adopting the above technical scheme, the rotating motor is adjusted, the output shaft of the rotating motor drives the first transmission wheel to rotate, the first transmission wheel drives the transmission belt to move, the transmission belt drives the second transmission wheel to rotate, the second transmission wheel drives the rotating part to rotate, the resistance sheet is synchronously rotated by the rotating part due to the negative pressure adsorption of the resistance sheet on the end of the rotating part, and the rotation of the resistance sheet is realized; the designed limiting assembly is convenient for negative pressure limiting of the resistance sheet, avoids the resistance sheet from falling off or displacement due to the action force of the spray head in the spraying operation, and simultaneously, is convenient for uniform rotation of the resistance sheet in the spraying operation, and improves the uniformity of the resistance sheet coating.

[0038] Optionally, the limiting assembly further comprises a guide sliding plate, a tensioning wheel and a plurality of limiting bolts, the guide sliding plate is provided with a guide sliding groove, and the limiting bolts are threadedly connected to the guide sliding plate through the guide sliding groove; the tensioning wheel is rotationally connected to the guide sliding plate, and the outer peripheral wall of the tensioning wheel abuts against the transmission belt.

[0039] By adopting the above technical scheme, the limiting bolt is adjusted, the bolt head of the limiting bolt is separated from the guide sliding plate, force is then applied to the guide sliding plate, the guide sliding plate slides along the limiting bolt, the position of the guide sliding plate is adjusted, the guide sliding plate drives the tensioning wheel to synchronously move, the tensioning wheel applies force to the transmission belt, and the transmission belt is tensioned; the designed guide sliding plate, tensioning wheel and plurality of limiting bolts are convenient for applying force to the transmission belt, so that the transmission belt is in a tensioned state, the frictional force between the transmission belt and the first transmission wheel and between the transmission belt and the second transmission wheel is improved, the rotation of the rotating part is ensured, and the rotation of the resistance sheet is realized.

[0040] Optionally, the spraying assembly further comprises a mounting plate, a guide block, a screw rod and a speed regulating motor;

[0041] The mounting plate is coaxially fixed to the protective cover;

[0042] The mounting plate is provided with a guide groove for sliding of the guide block, and the guide groove is arranged along the radial direction of the mounting plate, and the spray head is mounted on the guide block;

[0043] The screw rod penetrates through the guide block, and the screw rod is threadedly connected to the guide block, and the screw rod is arranged along the length direction of the guide groove;

[0044] The speed regulating motor is mounted on the protective cover, and the output shaft of the speed regulating motor is coaxially connected to the screw rod.

[0045] By adopting the above technical scheme, the rotating motor is adjusted, the output shaft of the rotating motor drives the first transmission wheel to rotate, the first transmission wheel drives the transmission belt to move, the transmission belt drives the second transmission wheel to rotate, the second transmission wheel drives the rotating part to rotate, the resistance sheet is adsorbed on the end of the rotating part due to negative pressure, the rotating part drives the resistance sheet to rotate synchronously, the resistance sheet rotates, the speed motor is adjusted, the output shaft of the speed motor drives the screw rod to rotate, the screw rod is threadedly connected with the guide block, and the guide block is slidably connected with the guide groove, so that the guide block slides along the radial direction of the mounting plate, the guide block drives the nozzle to move along the radial direction of the resistance sheet, and the movement speed of the nozzle is from fast to slow in the process that the nozzle moves from the central axis of the resistance sheet to the outer peripheral wall of the resistance sheet, so as to control the linear speed of the nozzle in the movement process of the nozzle; the designed mounting plate, guide block, screw rod and speed motor facilitate the control of the linear speed of the nozzle in the movement process along the radial direction of the resistance sheet, cooperate with the rotation of the resistance sheet, and improve the uniformity of the thickness of the aluminum coating of the resistance sheet in the spraying operation.

[0046] Optionally, the air extraction member comprises an air extractor and a cloth bag, the air extractor is mounted on the dust suction cylinder, and an air outlet pipe of the air extractor extends out of the dust suction cylinder and is detachably connected with the cloth bag.

[0047] By adopting the above technical scheme, the air extractor is adjusted, the dust suction cylinder, the dust prevention cylinder and the inner cavity of the protective cover are used to concentrate and extract dust in the inner cavity of the protective cover to the cloth bag, so that the dust in the dust suction cylinder, the dust prevention cylinder and the inner cavity of the protective cover is concentrated and collected; the designed air extraction member facilitates the concentration and extraction of the dust in the dust suction cylinder, the dust prevention cylinder and the inner cavity of the protective cover, realizes the concentration and recovery of the excess aluminum powder, and facilitates the recycling of the aluminum powder. At the same time, the protective cover, the dust prevention cylinder and the dust suction cylinder improve the safety performance in the resistance sheet spraying operation, and further improve the air quality in the resistance sheet spraying operation area.

[0048] Optionally, the turnover unit comprises a support, a vertical beam, a lifting slide plate, an adjusting cylinder, a servo motor and a clamping assembly;

[0049] The vertical beam is mounted on the support;

[0050] The lifting slide plate is slidably connected to the vertical beam;

[0051] The adjusting cylinder is mounted on the vertical beam, a piston rod of the adjusting cylinder is connected with the lifting slide plate, and the adjusting cylinder drives the lifting slide plate to slide along the axial direction of the mounting plate;

[0052] The servo motor is mounted on the lifting slide plate, and an output shaft of the servo motor is arranged along the radial direction of the mounting disc;

[0053] The clamping assembly is mounted on the output shaft of the servo motor, and the clamping assembly is used for limiting and clamping the resistance sheet.

[0054] By adopting the above technical solution, firstly, the negative pressure pump is turned off and the adjusting cylinder is driven. The piston rod of the adjusting cylinder drives the lifting slide plate to move along the length of the vertical beam. The lifting slide plate drives the servo motor to move up and down synchronously. The servo motor drives the clamping assembly to move up and down synchronously. When the clamping assembly and the resistor are at the same height, the adjusting clamping assembly clamps the resistor. Then, the adjusting cylinder is adjusted. The piston rod of the adjusting cylinder drives the lifting slide plate, servo motor, clamping assembly and resistor to rise synchronously until the distance between the resistor and the dustproof cylinder meets the requirements for the resistor to flip. The servo motor is adjusted. The output shaft of the servo motor drives the clamping assembly and resistor to rotate synchronously until the resistor flips 180 degrees. Then, the adjusting cylinder is adjusted. The piston rod of the adjusting cylinder drives the lifting slide plate, servo motor, clamping assembly and resistor to fall synchronously and place the resistor on the hollow mounting rod. The negative pressure pump is restarted to achieve the limit fixation of the resistor. The designed flipping unit facilitates the automatic flipping of the resistor and, together with another spraying unit, achieves spraying on the other side of the resistor, thereby achieving double-sided spraying of the resistor.

[0055] Optionally, the clamping assembly includes a double-headed cylinder and two clamps. The double-headed cylinder is fixedly connected to the output shaft of the servo motor, and the two piston rods of the double-headed cylinder are respectively fixedly connected to the two clamps. The two clamps form a clamping area for clamping the resistor sheet.

[0056] By adopting the above technical solution, firstly, the adjusting cylinder is adjusted. The piston rod of the adjusting cylinder drives the lifting slide, servo motor, double-headed cylinder, and clamps to move synchronously up and down until the two clamps are directly opposite the outer peripheral wall of the resistor sheet. Then, the double-headed cylinder is adjusted, and the piston rod of the double-headed cylinder drives the two clamps to move away from each other until the distance between the two clamps is greater than the diameter of the resistor sheet. Then, the double-headed cylinder is adjusted again, and the piston rod of the double-headed cylinder drives the two clamps to move closer to each other until the clamps are pressed against the outer peripheral wall of the resistor sheet, thus achieving the limiting clamping of the resistor sheet. The designed clamping component facilitates the limiting clamping of the resistor sheet, thereby facilitating the automatic flipping of the resistor sheet and realizing the double-sided spraying of the resistor sheet.

[0057] Optionally, it also includes a feeding unit, which includes a conveyor belt, a limiting plate, and a feeding robot.

[0058] The discharge end of the conveyor belt is located near one of the stations of the multi-station turntable unit.

[0059] The limiting plate is installed on the frame of the conveyor belt, and the limiting plate is used to limit the resistance sheet.

[0060] The loading robot is positioned near the conveyor belt and one of the dustproof cylinders.

[0061] By adopting the technical scheme, the designed feeding unit facilitates automatic feeding of the resistance sheet, and improves the efficiency of automatic spraying of the resistance sheet.

[0062] To sum up, the present application has at least one of the following beneficial technical effects:

[0063] 1. The designed resistance sheet automatic aluminum spraying device facilitates limiting of the resistance sheet through the spraying unit, facilitates automatic overturning of the resistance sheet in cooperation with the overturning unit, thereby realizing spraying of the resistance sheet on the opposite sides, facilitates centralized collection of aluminum powder scattered in the surrounding area of the spraying unit during spraying of the resistance sheet, reduces waste of aluminum powder during the zinc oxide resistance sheet spraying operation, thereby reducing production cost, ensuring air quality of the working area, and improving safety performance in the zinc oxide resistance sheet spraying operation;

[0064] 2. The designed resistance sheet automatic aluminum spraying device facilitates control of the linear speed of the spray head during movement in the radial direction of the resistance sheet in cooperation with self-rotation of the resistance sheet, thereby improving the uniformity of the aluminum coating thickness of the resistance sheet during the spraying operation. BRIEF DESCRIPTION OF DRAWINGS

[0065] Figure 1 is a schematic diagram of the overall structure of the resistance sheet automatic aluminum spraying device of embodiment 1 of the present application;

[0066] Figure 2 is a schematic diagram of the local structure of the resistance sheet automatic aluminum spraying device of embodiment 1 of the present application, which is intended to show the feeding unit;

[0067] Figure 3 is a schematic diagram of the local structure of the resistance sheet automatic aluminum spraying device of embodiment 1 of the present application, which is intended to show the multi-station turntable unit;

[0068] Figure 4 is a sectional view of the multi-station turntable unit in the resistance sheet automatic aluminum spraying device of embodiment 1 of the present application;

[0069] Figure 5 is an enlarged schematic diagram of part A of Figure 4 ;

[0070] Figure 6 is a schematic diagram of the local structure of the resistance sheet automatic aluminum spraying device of embodiment 1 of the present application, which is intended to show the spraying unit;

[0071] Figure 7 is a sectional view of the spraying unit in the resistance sheet automatic aluminum spraying device of embodiment 1 of the present application;

[0072] Figure 8 is an enlarged schematic diagram of part B of Figure 7 ;

[0073] Figure 9 Figure 1 is a partial structural schematic diagram of the automatic aluminum spraying device for resistance sheets according to an embodiment of the present application, which is intended to show the overturning unit.

[0074] Legend: 1, multi-station turntable unit; 11, base; 12, driving motor; 13, mounting disc; 14, limiting assembly; 141, support arm; 142, dustproof cylinder; 143, fixing member; 1431, auxiliary support frame; 1432, negative pressure pump; 144, hollow mounting rod; 1441, rotating part; 1442, connecting part; 145, rotating motor; 146, first transmission wheel; 147, second transmission wheel; 148, transmission belt; 149, tensioning wheel; 1491, guide sliding plate; 1492, guide sliding groove; 1493, limiting bolt; 2, feeding unit; 21, conveying belt; 22, feeding manipulator; 23, limiting plate; 3, spraying unit; 31, spraying assembly; 311, spraying support; 312, first lifting cylinder; 313, protective cover; 314, mounting plate; 315, guide groove; 316, guide block; 317, speed regulation motor; 318, screw rod; 319, spray head; 32, recovery assembly; 321, air suction support; 322, second lifting cylinder; 323, dust collection cylinder; 324, air suction member; 3241, air suction fan; 3242, cloth bag; 4, overturning unit; 41, support; 42, vertical beam; 43, adjusting cylinder; 44, lifting sliding plate; 45, servo motor; 46, clamping assembly; 461, double-head cylinder; 462, chuck; 463, clamping area; 5, discharging unit; 51, discharging manipulator; 52, placing rack. DETAILED DESCRIPTION

[0075] The following will be described in detail with reference to the accompanying drawings. Figures 1-9 The present application will be further described in detail.

[0076] The present application discloses an automatic aluminum spraying device for resistance sheets.

[0077] Reference will be made to Figure 1The utility model provides an automatic aluminum spraying device for resistance sheet, which comprises a multi-station turntable unit 1, a feeding unit 2, a turnover unit 4, a discharging unit 5 and two groups of spraying units 3. The feeding unit 2, one group of the spraying units 3, the turnover unit 4, the other group of the spraying units 3 and the discharging unit 5 are sequentially arranged along the circumferential direction of the multi-station turntable unit 1. The multi-station turntable unit 1 in the utility model can be a five-station unit, a six-station unit or a seven-station unit, as long as it can realize automatic spraying of the resistance sheet. In the embodiment, the multi-station turntable unit 1 is a five-station turntable unit, which is correspondingly arranged with the feeding unit 2, the turnover unit 4, the discharging unit 5 and the two groups of spraying units 3. The resistance sheet is transferred to the first station of the multi-station turntable unit 1 by the feeding unit 2, and then the resistance sheet is moved to the spraying unit 3 by the multi-station turntable unit 1. The spraying unit 3 sprays the front surface of the resistance sheet at the second station of the multi-station turntable unit 1. Then the resistance sheet is moved to the turnover unit 4 by the multi-station turntable unit 1, and the turnover unit 4 turns over the resistance sheet. Then the resistance sheet is moved to the other group of the spraying units 3 by the multi-station turntable unit 1, and the other group of the spraying units 3 sprays the back surface of the resistance sheet at the fourth station of the multi-station turntable unit 1. Finally, the resistance sheet is moved to the discharging unit 5 by the multi-station turntable unit 1, and the discharging unit 5 discharges the resistance sheet at the fifth station of the multi-station turntable unit 1.

[0078] Referring to Figure 1 and Figure 2 The feeding unit 2 comprises a conveyor belt 21, a limiting plate 23, a sensor and a feeding manipulator 22. The discharge end of the conveyor belt 21 is arranged close to the first station of the multi-station turntable unit 1. The limiting plate 23 is installed on the frame of the conveyor belt 21. In the embodiment, the limiting plate 23 is fixed on the frame of the conveyor belt 21 by bolts, and the limiting plate 23 is used for limiting the resistance sheet. The limiting plate 23 comprises two limiting parts, which are connected by the sensor. The sensor is arranged on the limiting plate 23 close to the discharge end of the conveyor belt 21. A guide groove for guiding the resistance sheet is formed between the two limiting parts. The width of the guide groove gradually decreases from the feeding end of the conveyor belt 21 to the discharge end of the conveyor belt 21. The feeding manipulator 22 is arranged close to the dustproof cylinder 142 of the first station of the multi-station turntable unit 1 and the conveyor belt 21. The resistance sheet is sent to the limiting plate 23 one by one by the conveyor belt 21. After the sensor senses, a signal is sent to the feeding manipulator 22. The feeding manipulator 22 clamps the resistance sheet and then puts it into the first station of the multi-station turntable unit 1. The multi-station turntable unit 1 rotates and drives the resistance sheet to move to the next station.

[0079] Referring to Figure 3 and Figure 4The multi-station rotary table unit 1 comprises a base 11, a driving motor 12, a mounting disc 13 and a plurality of limiting assemblies 14; the driving motor 12 is installed on the base 11, in the embodiment, the driving motor 12 is fixed in the inner cavity of the base 11 by bolts, and the output shaft of the driving motor 12 is coaxially arranged with the base 11; the mounting disc 13 is coaxially installed on the output shaft of the driving motor 12, in the embodiment, the mounting disc 13 is connected with the output shaft of the driving motor 12 by a key, and the mounting disc 13 is rotationally connected with the base 11; the limiting assembly 14 is installed on the outer side wall of the mounting disc 13, in the embodiment, the limiting assembly 14 is arranged as five groups, and the five limiting assemblies 14 are evenly distributed along the circumferential direction of the mounting disc 13; the limiting assembly 14 comprises a supporting arm 141, a dustproof cylinder 142 and a fixing member 143, one end of the supporting arm 141 is fixedly connected with the side wall of the mounting disc 13, the other end is fixedly connected with the dustproof cylinder 142, in the embodiment, the supporting arm 141 is welded with the mounting disc 13, and the other end of the supporting arm 141 is connected with the dustproof cylinder 142 by bolts, and the dustproof cylinder 142 is arranged axially parallel to the mounting disc 13.

[0080] With reference to Figure 4 and Figure 5 The fixing member 143 is installed in the inner cavity of the dustproof cylinder 142, and the fixing member 143 is used for limiting the resistance sheet, the fixing member 143 comprises an auxiliary support frame 1431, a hollow mounting rod 144 and a negative pressure pump 1432; the auxiliary support frame 1431 is coaxially installed in the inner cavity of the dustproof cylinder 142, in the embodiment, the auxiliary support frame 1431 is fixedly welded with the inner wall of the dustproof cylinder 142; the hollow mounting rod 144 is coaxially installed on the auxiliary support frame 1431, the hollow mounting rod 144 comprises a rotating part 1441 and a connecting part 1442 which are coaxially arranged from high to low, the connecting part 1442 is rotationally connected with the rotating part 1441, the rotating part 1441 is rotationally connected with the auxiliary support frame 1431, and the resistance sheet is installed at one end of the rotating part 1441 away from the connecting part 1442; the connecting part 1442 is located below the auxiliary support frame 1431, and the connecting part 1442 is connected with the negative pressure pump 1432, the negative pressure pump 1432 is installed on the dustproof cylinder 142, in the embodiment, the negative pressure pump 1432 is fixed on the dustproof cylinder 142 by bolts.

[0081] With reference to Figure 4 and Figure 5 In addition, a placing rod is fixedly connected in the inner cavity of the rotating part 1441, the placing rod is coaxially arranged with the rotating part 1441, and an air extraction gap is left between the placing rod and the rotating part 1441; a rubber supporting sheet is clamped at the end of the placing rod, and the rubber supporting sheet is slightly higher than the top wall of the rotating part 1441, so as to increase the contact area of the placing rod and the resistance sheet, and to facilitate the stable support of the resistance sheet.

[0082] With reference to Figure 4 and Figure 5The limiting assembly 14 further comprises a rotating motor 145, a transmission belt 148, a driving friction wheel, a driven friction wheel, a first transmission wheel 146, a second transmission wheel 147, a rotating shaft, a guide sliding plate 1491, a tensioning wheel 149, and a plurality of limiting bolts 1493. The rotating motor 145 is mounted on the base 11. In this embodiment, the rotating motor 145 is fixed on the base 11 by bolts, and the axial direction of the output shaft of the rotating motor 145 is parallel to the axial direction of the mounting disc 13. The rotating shaft is rotatably connected to the bottom wall of one of the arms 141, and the axial direction of the rotating shaft is parallel to the axial direction of the output shaft of the rotating motor 145. The driving friction wheel is coaxially connected to the output shaft of the rotating motor 145. In this embodiment, the driving friction wheel is connected to the output shaft of the rotating motor 145 by a key, so as to realize synchronous rotation of the driving friction wheel and the output shaft of the rotating motor 145. The driven friction wheel is coaxially connected to the rotating shaft. In this embodiment, the driven friction wheel is connected to the rotating shaft by a key, so as to realize synchronous rotation of the driven friction wheel and the rotating shaft. In addition, the driving friction wheel and the driven friction wheel are located on the same plane, and the driving friction wheel and the driven friction wheel are in contact with each other, and the axial directions of the driving friction wheel and the driven friction wheel are parallel. The first transmission wheel 146 is coaxially arranged on the rotating shaft. In this embodiment, the first transmission wheel 146 is connected to the rotating shaft by a key, so as to realize synchronous rotation of the driven friction wheel, the first transmission wheel 146, and the rotating shaft. The second transmission wheel 147 is coaxially arranged on the rotating part 1441. In this embodiment, the second transmission wheel 147 is connected to the rotating part 1441 by a key, and the axial directions of the first transmission wheel 146 and the second transmission wheel 147 are parallel. The transmission belt 148 is arranged around the first transmission wheel 146 and the second transmission wheel 147, and the transmission belt 148 passes through the dustproof cylinder 142. In addition, the guide sliding plate 1491 is provided with a guide sliding groove 1492, which is arranged along the length direction of the guide sliding plate 1491. The limiting bolts 1493 are threadedly connected to the arm 141 through the guide sliding groove 1492. The tensioning wheel 149 is rotatably connected to the guide sliding plate 1491, and the outer circumferential wall of the tensioning wheel 149 abuts against the transmission belt 148, so as to realize tensioning of the transmission belt 148, and further realize rotation of the rotating part 1441.

[0083] With reference to Figure 6 and Figure 7, the spraying unit 3 comprises a spraying assembly 31 and a recycling assembly 32, the spraying assembly 31 comprises a spraying support 311, a spraying head 319, a protective cover 313, a first lifting cylinder 312, a mounting plate 314, a guide block 316, a screw rod 318 and a speed regulating motor 317; the first lifting cylinder 312 is installed on the spraying support 311, in the embodiment, the piston rod of the first lifting cylinder 312 is arranged in parallel with the axial direction of the mounting disc 13, and the first lifting cylinder 312 is fixed on the spraying support 311 by bolts; the protective cover 313 is installed on the piston rod of the first lifting cylinder 312, and the protective cover 313 is coaxial with the dustproof cylinder 142, in the embodiment, the protective cover 313 is arranged in a cylindrical tube shape, the protective cover 313 is fixedly connected with the piston rod of the first lifting cylinder 312 through a connecting joint, and in the embodiment, the inner diameter of the protective cover 313 is greater than the outer diameter of the dustproof cylinder 142, so that the lower end of the protective cover 313 extends into the upper end of the dustproof cylinder 142, the lower end of the protective cover 313 is overlapped with the upper end of the dustproof cylinder 142, in addition, the inner wall of the protective cover 313 is coaxially fixedly connected with an upper blocking ring, and the upper blocking ring is bonded with an upper rubber ring close to the dustproof cylinder 142, so as to realize the sealing abutment of the protective cover 313 and the dustproof cylinder 142; the spraying head 319 is installed in the inner cavity of the protective cover 313, and the spraying head 319 is used for resistance sheet spraying, in the embodiment, the spraying head 319 faces directly downward, and the radius of the resistance sheet is R, the maximum spraying diameter of the spraying head 319 is d, and d≦1 / 5R; the mounting plate 314 is coaxially fixed to the protective cover 313, in the embodiment, the mounting plate 314 is fixedly welded with the protective cover 313; referring to Figure 8 a guide groove 315 for sliding of the guide block 316 is formed in the mounting plate 314, and the guide groove 315 is arranged along the radial direction of the mounting plate 314, the spraying head 319 is installed on the guide block 316, so as to realize the movement of the spraying head 319 along the radial direction of the mounting plate 314; the screw rod 318 penetrates through the guide block 316, and the screw rod 318 is threadedly connected with the guide block 316, the screw rod 318 is arranged along the length direction of the guide groove 315, in the embodiment, the screw rod 318 is rotationally connected with the mounting plate 314; the speed regulating motor 317 is installed on the protective cover 313, in the embodiment, the speed regulating motor 317 is fixed on the protective cover 313 by bolts, and the output shaft of the speed regulating motor 317 is coaxially connected with the screw rod 318 through a shaft coupling.

[0084] And, in the process of spraying the resistance sheet, the rotating motor 145 is started, the output shaft of the rotating motor 145 drives the driving friction wheel to rotate, due to the contact between the driving friction wheel and the driven friction wheel, the friction between the driving friction wheel and the driven friction wheel during the rotation of the driving friction wheel drives the driven friction wheel to rotate, the driven friction wheel drives the rotating shaft to rotate synchronously, the rotating shaft drives the first transmission wheel 146 to rotate synchronously, the first transmission wheel 146 drives the transmission belt 148 to move, the transmission belt 148 drives the second transmission wheel 147 to rotate, the second transmission wheel 147 drives the rotating part 1441 to rotate, due to the negative pressure adsorption of the resistance sheet to the end of the rotating part 1441, the rotating part 1441 and the resistance sheet rotate synchronously; while the resistance sheet rotates, the speed regulating motor 317 is started, the output shaft of the speed regulating motor 317 drives the screw 318 to rotate, due to the threaded connection between the screw 318 and the guide block 316, and the guidance of the guide groove 315 to the guide block 316, the guide block 316 slides along the radial direction of the mounting plate 314, the guide block 316 drives the nozzle 319 to move along the radial direction of the resistance sheet, in the process of the nozzle 319 moving from the central axis of the resistance sheet to the outer wall of the resistance sheet, the speed of the nozzle 319 changes from fast to slow, so as to control the linear speed of the nozzle 319 in the process of movement, and improve the uniformity of the resistance sheet coating.

[0085] With reference to Figure 6 and Figure 7 The recovery assembly 32 comprises an air suction support 321, a dust suction cylinder 323, a second lifting cylinder 322 and an air suction part 324. The second lifting cylinder 322 is installed on the air suction support 321, which can be integrally welded with the spraying support 311 in the embodiment, and the first lifting cylinder 312 and the second lifting cylinder 322 are distributed vertically. The dust suction cylinder 323 is installed on the piston rod of the second lifting cylinder 322, and is coaxial with the dustproof cylinder 142. In the embodiment, the inner diameter of the dust suction cylinder 323 is larger than the outer diameter of the dustproof cylinder 142, so that the lower end of the dust suction cylinder 323 extends into the upper end of the dustproof cylinder 142, and the upper end of the dust suction cylinder 323 and the lower end of the dustproof cylinder 142 are overlapped. In addition, a lower blocking ring is fixedly connected to the inner wall of the dust suction cylinder 323 coaxially, and a lower rubber ring is bonded to the side of the lower blocking ring close to the dustproof cylinder 142, so as to realize the sealing abutment of the dust suction cylinder 323 and the dustproof cylinder 142. The air suction part 324 is used for collecting dust in the inner cavities of the protective cover 313, the dustproof cylinder 142 and the dust suction cylinder 323. The air suction part 324 comprises an air suction machine 3241 and a cloth bag 3242. The air suction machine 3241 is installed on the dust suction cylinder 323, and is fixed on the dust suction cylinder 323 by bolts in the embodiment. The air outlet pipe of the air suction machine 3241 extends out of the dust suction cylinder 323 and is detachably connected to the cloth bag 3242.

[0086] With reference to Figure 1 and Figure 9The turnover unit 4 is used for overturning the resistance sheet, and the turnover unit 4 comprises a support 41, a vertical beam 42, a lifting slide plate 44, an adjusting cylinder 43, a servo motor 45 and a clamping assembly 46; the vertical beam 42 is installed on the support 41, and in the embodiment, the vertical beam 42 is fixed on the support 41 by bolts, and the length direction of the vertical beam 42 is parallel to the axial direction of the mounting disc 13; the lifting slide plate 44 is slidably connected to the vertical beam 42, and in the embodiment, the lifting slide plate 44 slides along the length direction of the vertical beam 42; the adjusting cylinder 43 is installed on the vertical beam 42, and in the embodiment, the adjusting cylinder 43 is fixed on the vertical beam 42 by bolts, and the piston rod of the adjusting cylinder 43 is connected to the lifting slide plate 44, so that the lifting slide plate 44 is driven to slide along the axial direction of the mounting plate 314 by the adjusting cylinder 43; the servo motor 45 is installed on the lifting slide plate 44, and the output shaft of the servo motor 45 is arranged along the radial direction of the mounting disc 13; the clamping assembly 46 is installed on the output shaft of the servo motor 45, and the clamping assembly 46 is used for limiting and clamping the resistance sheet, and the clamping assembly 46 comprises a double-head cylinder 461 and two chuck heads 462, the double-head cylinder 461 is fixedly connected to the output shaft of the servo motor 45, and the two piston rods of the double-head cylinder 461 are fixedly connected to the two chuck heads 462 respectively, and the two chuck heads 462 form a clamping area 463 for clamping the resistance sheet.

[0087] With reference to Figure 1 The blanking unit 5 comprises a blanking manipulator 51 and a placing rack 52, so as to place the sprayed resistance sheets on the placing rack 52 by the blanking manipulator 51, thereby realizing automatic blanking of the resistance sheets.

[0088] The implementation principle of the resistance sheet automatic spraying device is as follows: during the spraying operation of the resistance sheet, first, the driving motor 12 is adjusted, the output shaft of the driving motor 12 drives the mounting disc 13 to rotate along the base 11, the mounting disc 13 drives the plurality of supporting arms 141 to synchronously rotate, the supporting arms 141 drive the dustproof barrels 142 to synchronously move, and the dustproof barrels 142 drive the auxiliary support racks 1431, the hollow mounting rods 144 and the negative pressure pumps 1432 to synchronously move; then, the resistance sheets are placed on the conveying belt 21, the conveying belt 21 conveys the resistance sheets to the limiting plate 23 one by one, after the sensor senses the resistance sheet, a signal is sent to the feeding manipulator 22, the feeding manipulator 22 clamps and places the resistance sheet into the first station of the multi-station turntable unit 1, the multi-station turntable unit 1 rotates to drive the resistance sheet to move to the second station of the multi-station turntable unit 1; and the negative pressure pump 1432 is adjusted, under the action of the negative pressure pump 1432, the hollow mounting rod 144 is in a vacuum state, thereby exerting a negative pressure force on the resistance sheet at the end of the hollow mounting rod 144, and realizing limiting and fixing of the resistance sheet.

[0089] The rotating motor 145 is started, the output shaft of the rotating motor 145 drives the driving friction wheel to rotate, due to the contact between the driving friction wheel and the driven friction wheel, the friction between the driving friction wheel and the driven friction wheel during the rotation of the driving friction wheel drives the driven friction wheel to rotate, the driven friction wheel drives the rotating shaft to rotate synchronously, the rotating shaft drives the first transmission wheel 146 to rotate synchronously, the first transmission wheel 146 drives the transmission belt 148 to move, the transmission belt 148 drives the second transmission wheel 147 to rotate, the second transmission wheel 147 drives the rotating part 1441 to rotate, due to the negative pressure adsorption of the resistance sheet to the end of the rotating part 1441, the rotating part 1441 and the resistance sheet rotate synchronously; while the resistance sheet rotates, the speed regulating motor 317 is started, the output shaft of the speed regulating motor 317 drives the screw 318 to rotate, due to the threaded connection between the screw 318 and the guide block 316, and the guidance of the guide groove 315 to the guide block 316, the guide block 316 slides along the radial direction of the mounting plate 314, the guide block 316 drives the nozzle 319 to move along the radial direction of the resistance sheet, in the process that the nozzle 319 moves from the central axis of the resistance sheet to the outer wall of the resistance sheet, the movement speed of the nozzle 319 changes from fast to slow, so as to control the linear velocity of the nozzle 319 in the process of movement, the nozzle 319 sprays to the front surface of the resistance sheet, and the dust extractor 3241 is adjusted, the dust extractor 3241 collects the dust in the suction cylinder 323, the dustproof cylinder 142 and the inner cavity of the protective cover 313 into the cloth bag 3242, and the dust in the suction cylinder 323, the dustproof cylinder 142 and the inner cavity of the protective cover 313 is collected.

[0090] The multi-station turntable unit 1 drives the resistance sheet to move to the third station of the multi-station turntable unit 1, the negative pressure pump 1432 is adjusted to be closed, the adjusting cylinder 43 is driven, the piston rod of the adjusting cylinder 43 drives the lifting slide plate 44 to move along the length direction of the vertical beam 42, the lifting slide plate 44 drives the servo motor 45 to move synchronously, the servo motor 45 drives the double-head cylinder 461 and the two clamping heads 462 to move synchronously, when the two clamping heads 462 are at the same height as the resistance sheet, the double-head cylinder 461 is adjusted, the piston rod of the double-head cylinder 461 drives the two clamping heads 462 to move close to each other to clamp the resistance sheet; then, the adjusting cylinder 43 is adjusted, the piston rod of the adjusting cylinder 43 drives the lifting slide plate 44, the servo motor 45, the clamping assembly 46 and the resistance sheet to move up synchronously, and the distance between the resistance sheet and the dustproof cylinder 142 meets the requirements of the resistance sheet; the servo motor 45 is adjusted, the output shaft of the servo motor 45 drives the double-head cylinder 461, the clamping head 462 and the resistance sheet to rotate synchronously, and rotates 180 degrees after the resistance sheet is turned over; then the adjusting cylinder 43 is adjusted, the piston rod of the adjusting cylinder 43 drives the lifting slide plate 44, the servo motor 45, the double-head cylinder 461, the clamping head 462 and the resistance sheet to move down synchronously, and places the resistance sheet on the hollow mounting rod 144, and the negative pressure pump 1432 is restarted to fix the resistance sheet.

[0091] The multi-station turntable unit 1 drives the resistance sheet to move to another set of spraying units 3, the other set of spraying units 3 sprays the back of the resistance sheet, the multi-station turntable unit 1 drives the resistance sheet to move to the blanking unit 5, and the blanking unit 5 blanks the resistance sheet in the fifth station of the multi-station turntable unit 1.

[0092] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automatic aluminum spraying device for a resistor disc, characterized in that, The application relates to a multi-station rotary disc unit (1), a turnover unit (4) and two groups of spraying units (3), and wherein one group of the spraying units (3), the turnover unit (4) and the other group of the spraying units (3) are sequentially arranged along the circumferential direction of the multi-station rotary disc unit (1); The multi-station rotary disc unit (1) comprises a base (11), a driving motor (12), a mounting disc (13) and a plurality of limiting assemblies (14); The driving motor (12) is mounted on the base (11); The mounting disc (13) is coaxially mounted on the output shaft of the driving motor (12), and the mounting disc (13) is rotationally connected with the base (11); The limiting assembly (14) is mounted on the outer side wall of the mounting disc (13), and a plurality of the limiting assemblies (14) are uniformly distributed along the circumferential direction of the mounting disc (13); The limiting assembly (14) comprises a supporting arm (141), a dustproof cylinder (142) and a fixing member (143); One end of the supporting arm (141) is fixedly connected with the side wall of the mounting disc (13); the other end of the supporting arm (141) is fixedly connected with the dustproof cylinder (142), and the dustproof cylinder (142) is arranged in axial parallel with the mounting disc (13); The fixing member (143) is mounted in the inner cavity of the dustproof cylinder (142), and the fixing member (143) is used for resistance sheet limiting; The spraying unit (3) comprises a spraying assembly (31) and a recovery assembly (32); The spraying assembly (31) comprises a spraying support (311), a spraying head (319), a protective cover (313) and a first lifting cylinder (312); The first lifting cylinder (312) is mounted on the spraying support (311); The protective cover (313) is mounted on the piston rod of the first lifting cylinder (312), and the protective cover (313) is coaxial with the dustproof cylinder (142); The spraying head (319) is mounted in the inner cavity of the protective cover (313), and the spraying head (319) is used for resistance sheet spraying; The recovery assembly (32) comprises a suction support (321), a dust suction cylinder (323), a second lifting cylinder (322) and a suction member (324); The second lifting cylinder (322) is mounted on the suction support (321); The dust suction cylinder (323) is mounted on the piston rod of the second lifting cylinder (322), and the dust suction cylinder (323) is coaxial with the dustproof cylinder (142); The suction member (324) is used for collecting dust in the inner cavities of the protective cover (313), the dustproof cylinder (142) and the dust suction cylinder (323); The turnover unit (4) is used for resistance sheet turnover.

2. The automatic aluminum-spraying device for a resistor disc according to claim 1, wherein: The fixing member (143) comprises an auxiliary support frame (1431), a hollow mounting rod (144) and a negative pressure pump (1432); The auxiliary support frame (1431) is coaxially mounted in the inner cavity of the dustproof cylinder (142); The hollow mounting rod (144) is coaxially mounted on the auxiliary support frame (1431), and the hollow mounting rod (144) is rotationally connected with the auxiliary support frame (1431); the resistance sheet is placed at the top end of the hollow mounting rod (144); The negative pressure pump (1432) is mounted on the dustproof cylinder (142), and the negative pressure pump (1432) is connected with the hollow mounting rod (144).

3. The automatic aluminum-spraying device for a resistor disc according to claim 2, characterized in that: The hollow mounting rod (144) comprises a rotating part (1441) and a connecting part (1442) which are coaxially arranged from high to low; the rotating part (1441) is rotationally connected with the auxiliary support frame (1431), and the resistance sheet is mounted at one end of the rotating part (1441) away from the connecting part (1442); the connecting part (1442) is rotationally connected with the rotating part (1441), and the connecting part (1442) is located below the auxiliary support frame (1431); the connecting part (1442) is connected with the negative pressure pump (1432).

4. The automatic aluminum-spraying device for a resistor disc according to claim 3, characterized in that: The limiting assembly (14) further comprises a rotating motor (145), a transmission belt (148), a first transmission wheel (146) and a second transmission wheel (147); The rotating motor (145) is mounted on the support arm (141), and the rotating motor (145) is used to drive the first transmission wheel (146) to rotate; The first transmission wheel (146) is rotationally connected with the support arm (141), the second transmission wheel (147) is coaxially sleeved on the rotating part (1441), and the first transmission wheel (146) and the second transmission wheel (147) are axially parallel; The transmission belt (148) is arranged around the first transmission wheel (146) and the second transmission wheel (147), and the transmission belt (148) passes through the dustproof cylinder (142).

5. The automatic aluminum-spraying device for a resistor disc according to claim 4, characterized in that: The limiting assembly (14) further comprises a guide sliding plate (1491), a tensioning wheel (149) and a plurality of limiting bolts (1493); the guide sliding plate (1491) is provided with a guide sliding groove (1492); the limiting bolts (1493) are threadedly connected with the support arm (141) through the guide sliding groove (1492); the tensioning wheel (149) is rotationally connected on the guide sliding plate (1491), and the outer peripheral wall of the tensioning wheel (149) abuts against the transmission belt (148).

6. The automatic aluminum-spraying device for a resistor disc according to claim 1, wherein: The spraying assembly (31) further comprises a mounting plate (314), a guide block (316), a screw rod (318) and a speed regulating motor (317); The mounting plate (314) is coaxially fixed to the protective cover (313); The mounting plate (314) is provided with a guide groove (315) for sliding of the guide block (316), and the guide groove (315) is arranged along the radial direction of the mounting plate (314); the spray head (319) is mounted on the guide block (316); The screw rod (318) penetrates through the guide block (316), and the screw rod (318) is threadedly connected with the guide block (316); the screw rod (318) is arranged along the length direction of the guide groove (315); The speed regulating motor (317) is installed on the protective cover (313), and an output shaft of the speed regulating motor (317) is coaxially connected with the screw rod (318).

7. The automatic aluminum-spraying device for a resistor disc according to claim 1, wherein: The air suction member (324) comprises an air suction fan (3241) and a cloth bag (3242), the air suction fan (3241) is installed on the dust suction cylinder (323), and an air outlet pipe of the air suction fan (3241) extends out of the dust suction cylinder (323) and is detachably connected with the cloth bag (3242).

8. The automatic aluminum-spraying device for a resistor disc according to claim 6, wherein: The turnover unit (4) comprises a support (41), a vertical beam (42), a lifting slide plate (44), an adjusting cylinder (43), a servo motor (45) and a clamping assembly (46). The vertical beam (42) is installed on the support (41). The lifting slide plate (44) is slidably connected to the vertical beam (42). The adjusting cylinder (43) is installed on the vertical beam (42), a piston rod of the adjusting cylinder (43) is connected with the lifting slide plate (44), and the adjusting cylinder (43) drives the lifting slide plate (44) to slide in an axial direction of the mounting plate (314). The servo motor (45) is installed on the lifting slide plate (44), and an output shaft of the servo motor (45) is arranged in a radial direction of the mounting disc (13). The clamping assembly (46) is installed on the output shaft of the servo motor (45), and the clamping assembly (46) is used for resistance sheet limiting and clamping.

9. The automatic resistance sheet aluminum spraying device according to claim 8, characterized in that: The clamping assembly (46) comprises a double-head cylinder (461) and two clamping heads (462), the double-head cylinder (461) is fixedly connected with the output shaft of the servo motor (45), two piston rods of the double-head cylinder (461) are respectively fixedly connected with two clamping heads (462), and the two clamping heads (462) form a clamping area (463) for clamping resistance sheets.

10. The automatic resistance sheet aluminum spraying device according to claim 1, characterized in that: The feeding unit (2) comprises a conveying belt (21), a limiting plate (23) and a feeding manipulator (22). A discharge end of the conveying belt (21) is arranged close to one station of the multi-station turntable unit (1). The limiting plate (23) is installed on a frame body of the conveying belt (21), and the limiting plate (23) is used for resistance sheet limiting. The feeding manipulator (22) is arranged close to the conveying belt (21) and a dustproof cylinder (142) of a first station of the multi-station turntable unit (1).

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