Self-cleaning welding device and working method thereof

Abstract

The invention discloses a self-cleaning welding device and a working method thereof, and belongs to the technical field of welding, the device comprises a welding robot body and a control box, the welding robot body comprises a moving base, a mounting arm, a moving turntable, a mechanical arm and a welding gun, the welding gun is provided with a cleaning mechanism through a multi-directional rotating mechanism, and the cleaning mechanism comprises a telescopic assembly; a cleaning ring is arranged on the telescopic assembly, a containing groove is formed in the cleaning ring, a bottom cleaning assembly is arranged at the bottom of the containing groove, side face cleaning assemblies are arranged on the inner wall of the containing groove and the inner side of the cleaning ring, and a closed type thread trimming mechanism is arranged at the bottom of the cleaning ring. Meanwhile, the invention discloses a working method based on the device, the self-cleaning welding device and the working method thereof are adopted, the cleaning mechanism is arranged on the welding gun through the multi-direction rotating mechanism, cleaning is conducted through welding gaps, multi-position movement of a mechanical arm is not needed, batch welding is achieved, and the welding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a self-cleaning welding device and a working method thereof. Background Art

[0002] In the production process of accessories, welding equipment is an indispensable equipment. The welding gun conductive nozzle is a component in the welding equipment, which is used to conduct current to the welding wire or electrode to melt the end to form a weld. The design of the conductive nozzle is crucial to the quality and efficiency of welding, and it usually needs to be replaced regularly to ensure good conductivity and heat conduction. The gun cleaning and wire cutting machine is a device designed specifically for welding operations. Its main functions include automatically cleaning the conductive nozzle and wire guide tube of the welding gun, and cutting excess welding wire to ensure the continuity and quality of the welding process.

[0003] After searching, a patent with application number CN201920292776.3 discloses a welding workstation, which is equipped with a gun cleaning station. The gun cleaning station includes a support frame, a welding gun cleaning device and a welding gun oil spraying device arranged on the support frame; the welding gun cleaning device includes a U-shaped base plate, and a clamping device and a wire cutting device are arranged in the working chamber of the U-shaped base plate, and the clamping device is located directly above or directly below the wire cutting device; it also includes a gun cleaning box, and the gun cleaning device is arranged in the gun cleaning box.

[0004] The prior art has the following problems:

[0005] (1) Each time the gun is cleaned, the robotic arm of the welding robot needs to move to the bridge cleaning position for gun cleaning and then return to the welding position for welding, which reduces work efficiency.

[0006] (2) An oil injection device is provided, but the waste oil is not recycled. Summary of the invention

[0007] The purpose of the present invention is to provide a self-cleaning welding device and a working method thereof to solve the above technical problems.

[0008] To achieve the above-mentioned purpose, the present invention provides a self-cleaning welding device, including a welding robot body and a control box, the welding robot body including a mobile base, a mounting arm is provided on the mobile base, a mobile turntable is provided on the mounting arm, a mechanical arm is installed on the mobile turntable, a welding gun is provided on the mechanical arm, a cleaning mechanism is provided on the welding gun through a multi-directional rotating mechanism, the cleaning mechanism includes a telescopic component, a cleaning ring is provided on the telescopic component, a receiving groove is opened on the cleaning ring, a bottom cleaning component is provided at the bottom of the receiving groove, a side cleaning component is provided on the inner wall of the receiving groove and the inner side of the cleaning ring, and a closed wire cutting mechanism is provided at the bottom of the cleaning ring;

[0009] The moving base, the moving turntable, the mechanical arm, the multi-directional rotating mechanism, the cleaning mechanism and the closed wire cutting mechanism are all electrically connected to the control box.

[0010] Preferably, the multi-directional rotation mechanism includes a fixed ring, a clamping assembly is provided on one side of the fixed ring, a rotating gear ring is provided on the other side of the fixed ring through a bearing, the rotating gear ring is meshed with a rotating gear, the rotating gear is connected to the first rotation drive motor, and two symmetrically arranged mounting plates are provided on the rotating gear ring, a second rotation drive motor is fixed on the mounting plates, and the output shaft of the second rotation drive motor is connected to a connecting rod.

[0011] Preferably, the clamping assembly includes at least two clamping rods, the clamping rods are connected with a meshing plate, the meshing plate is arranged in a radial groove of the fixed ring, a spiral meshing protrusion is arranged at the bottom of the meshing plate, the spiral meshing protrusion is meshed with a spiral groove on the upper side of the synchronous drive gear ring, the synchronous drive gear ring is arranged in an annular groove of the fixed ring, a through hole is opened on the outer side of the fixed ring, a clamping drive motor is fixed on the outer side of the fixed ring, a clamping drive gear is arranged on the output shaft of the clamping drive motor, and the clamping drive gear is meshed with the synchronous drive gear ring through the through hole;

[0012] The first rotary drive motor, the second rotary drive motor and the clamping drive motor are all electrically connected to the control box.

[0013] Preferably, the telescopic component is a telescopic cylinder or an electric telescopic rod, the fixed end of the telescopic component is connected to the connecting rod, and the telescopic end of the telescopic component is connected to the cleaning ring through a connecting ear.

[0014] Preferably, the bottom cleaning assembly is provided with at least one and includes a guide tube, a support ring is fixed in the guide tube, a bottom adjustment spring is provided on the support ring, the other end of the bottom adjustment spring is connected to the guide rod, and a wedge-shaped cleaning block is provided on the top of the guide rod.

[0015] Preferably, the side cleaning assembly is provided with at least one and includes a trapezoidal cleaning plate, the trapezoidal cleaning plate is connected to a mounting block via a number of side adjustment springs arranged in parallel, the mounting block has a dovetail-shaped cross-section, and the mounting block is arranged in the mounting groove on the inner wall of the accommodating groove and the inner side of the cleaning ring.

[0016] Preferably, the closed-type thread trimming mechanism comprises a first guide ring, a plurality of circumferentially distributed guide drive grooves and limit grooves are arranged on the inner side of the first guide ring, a guide block on one side of the thread trimming plate is arranged in the guide drive groove, an elastic limit piece is arranged in the guide block, the elastic limit piece comprises a hollow fixed stud, a limit column is fixed in the hollow fixed stud by a spring, and the limit column is arranged in the limit groove; a drive column on the other side of the thread trimming plate is arranged in the through hole of the drive plate, and a limit disk is arranged at one end of the drive column, a plurality of drive plates are circumferentially distributed in the second guide ring, the second guide ring is fixed to the bottom of the cleaning ring, the thread trimming tooth ring is meshed with the thread trimming gear, the thread trimming gear is connected to a thread trimming drive motor, and the thread trimming drive motor is fixed on the cleaning ring;

[0017] The thread trimmer drive motor is electrically connected to the control box.

[0018] Preferably, an oil immersion mechanism is also provided, the oil immersion mechanism comprises an oil storage tank arranged on the movable turntable, an oil supply pump is provided on the oil outlet pipe of the oil storage tank, the side surface of the upper part of the cleaning ring and one of the shearing plates are connected to the oil outlet pipe through a rotating joint, an oil return pump and a filter are provided on the oil return pipe of the oil storage tank, the side surface of the lower part of the cleaning ring and one of the shearing plates are connected to the oil return pipe through a rotating joint, a fixed tube plate is provided on the fixed ring, and at least one limit through hole is opened on the fixed tube plate;

[0019] The oil supply pump and the oil return pump are both electrically connected to the control box.

[0020] Preferably, a cooling mechanism is also provided, the cooling mechanism includes a cooling ring arranged on the upper side of the cleaning ring, air outlet holes are opened on the inner side of the cooling ring, the cooling ring is connected to a cooling air pipe through a rotating joint, the cooling air pipe is connected to a cooling air pump through a limiting through hole, the cooling air pump is installed on the movable turntable, an inner flexible sealing ring and an outer flexible sealing ring are provided on the upper part of the inner wall of the cleaning ring, and the cooling air pump is electrically connected to the control box.

[0021] A working method based on the above self-cleaning welding device, the specific steps are as follows:

[0022] Step S1: input the welding process of the parts to be processed through the control box;

[0023] Step S2: welding is performed according to the welding process of the part to be processed, and a cleaning time point is determined according to the welding process of the part to be processed, and cleaning is performed when the part to be processed is converted in position or when the next part to be processed is switched;

[0024] Step S3: When the cleaning time point is reached, the control box adjusts the robot arm so that the welding gun head is set vertically to trim the wire;

[0025] The second rotary drive motor is started to drive the connecting rod to rotate toward the welding gun, and the telescopic assembly is extended at the same time. When the cleaning ring is opposite to the welding gun head, the second rotary drive motor stops, the telescopic assembly contracts, and the cooling air pump is started to cool the welding gun head. The welding gun head is gradually inserted into the cleaning ring. When the set wire trimming length is reached, the wire trimming drive motor is started to run forward, so that the wire trimming plates distributed on the circumference are close to each other to trim the wire, and the wire trimming is completed.

[0026] Step S4: After the wire cutting is completed, the gun is cleaned and oiled;

[0027] Start the oil supply pump and the first rotary drive motor at the same time, so that the wedge-shaped cleaning block and the trapezoidal cleaning plate rotate around the welding gun head for cleaning. After the set time, turn off the oil supply pump and the first rotary drive motor, and start the oil return pump to filter and pump oil;

[0028] Step S5: After the oil is pumped out, the telescopic assembly is extended, and the second rotary drive motor is started to drive the connecting rod to rotate away from the welding gun and return to the initial position.

[0029] Therefore, the present invention adopts the above-mentioned self-cleaning welding device and its working method, which has the following beneficial effects:

[0030] (1) The cleaning mechanism is arranged on the welding gun through a multi-directional rotating mechanism, and the welding gap is used for cleaning. There is no need for the robot arm to move to multiple positions. In conjunction with the workpiece assembly line, batch welding can be achieved, thereby improving welding efficiency.

[0031] (2) The receiving groove of the cleaning ring is an oil chamber, and the wire cutting mechanism and the inner side of the cleaning ring form an oil chamber. The two oil chambers realize the oil immersion of the welding gun head. During the cleaning process, the welding gun head is immersed in the oil, and oiling is realized during the cleaning process. At the same time, the cleaned waste residue is filtered out by the filter under the flow of oil, and the oil is repeatedly used. In addition, the oil immersion method is more uniform than the oil spraying method.

[0032] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a structural schematic diagram of a self-cleaning welding device of the present invention;

[0034] Figure 2 It is a schematic diagram of the structure of the multi-directional rotating mechanism and the cleaning mechanism of the present invention;

[0035] Figure 3 It is a partial cross-sectional view of the multi-directional rotating mechanism of the present invention;

[0036] Figure 4 This is a schematic diagram of the cleaning ring structure of the present invention;

[0037] Figure 5 This is a schematic diagram of the structure of the bottom cleaning component of the present invention;

[0038] Figure 6 This is a schematic diagram of the principle of the oil immersion mechanism of the present invention;

[0039] Figure 7 Schematic diagram of the structure of the wire cutting board of the present invention

[0040] Figure 8 It is a schematic diagram of the limiting groove structure of the present invention.

[0041] Reference numerals

[0042] 1. Welding robot body; 11. Mobile base; 12. Mounting arm; 13. Mobile turntable; 14. Robotic arm; 15. Welding gun; 2. Control box; 3. Multi-directional rotating mechanism; 31. Fixed ring; 311. Radial slide groove; 312. Annular slide groove; 313. Fixed tube plate; 314. Limiting through hole; 32. Clamping assembly; 321. Clamping rod; 322. Engagement plate; 323. Spiral engagement protrusion; 324. Synchronous drive gear ring ; 325, clamping drive motor; 326, clamping drive gear; 33, rotating gear ring; 331, mounting plate; 34, rotating gear; 35, first rotating drive motor; 36, second rotating drive motor; 37, connecting rod; 4, cleaning mechanism; 41, telescopic assembly; 42, cleaning ring; 421, connecting ear; 422, receiving groove; 423, mounting groove; 424, inner flexible sealing ring; 425, outer flexible sealing ring; 43, Bottom cleaning assembly; 431, guide tube; 432, support ring; 433, bottom adjustment spring; 434, guide rod; 435, wedge-shaped cleaning block; 44, side cleaning assembly; 441, trapezoidal cleaning plate; 442, side adjustment spring; 443, mounting block; 5, closed-type thread trimming mechanism; 51, first guide ring; 511, guide drive groove; 512, limit groove; 52, thread trimming plate; 521, guide block; 522, hollow solid Fixed stud; 523, limit column; 524, drive column; 525, limit plate; 53, drive plate; 54, second guide ring; 55, thread trimming drive motor; 56, thread trimming gear; 57, thread trimming gear ring; 6, oil immersion mechanism; 61, oil storage tank; 62, oil outlet pipe; 63, oil supply pump; 64, oil return pipe; 65, oil return pump; 66, filter; 7, cooling mechanism; 71, cooling ring; 72, cooling air pipe; 73, cooling air pump. DETAILED DESCRIPTION

[0043] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0045] Example 1

[0046] like Figure 1 As shown, a self-cleaning welding device includes a welding robot body 1 and a control box 2. The welding robot body 1 includes a mobile base 11, a mounting arm 12 is provided on the mobile base 11, a mobile turntable 13 is provided on the mounting arm 12, a mechanical arm 14 is installed on the mobile turntable 13, and a welding gun 15 is provided on the mechanical arm 14. The welding robot is a conventional device known to those skilled in the art purchased on the market, and the model can also be selected or customized according to actual needs. It is used in this embodiment without improving its structure and function. For those skilled in the art, its setting method, installation method and electrical connection method can be debugged according to the requirements of its instruction manual, and the related control is also a conventional technical means in this field, which will not be described in detail here.

[0047] In this embodiment, the welding gun 15 is provided with a cleaning mechanism 4 through a multi-directional rotating mechanism 3. Figure 2-3 As shown, the multi-directional rotating mechanism 3 includes a fixed ring 31, a clamping assembly 32 is provided on one side of the fixed ring 31, a rotating gear ring 33 is provided on the other side of the fixed ring 31 through a bearing, the rotating gear ring 33 is meshed with a rotating gear 34, the rotating gear 34 is connected to a first rotating drive motor 35, and two symmetrically arranged mounting plates 331 are provided on the rotating gear ring 33, a second rotating drive motor 36 is fixed on the mounting plate 331, and a connecting rod 37 is connected to the output shaft of the second rotating drive motor 36. The multi-directional rotating mechanism 3 realizes the rotation of the cleaning mechanism 4 in two directions. The clamping assembly 32 realizes the fixation of the fixed ring 31. The clamping assembly 32 includes two clamping rods 321. The clamping rods 321 are connected with a meshing plate 322. The meshing plate 322 is arranged in the radial groove 311 of the fixed ring 31. A spiral meshing protrusion 323 is arranged at the bottom of the meshing plate 322. The spiral meshing protrusion 323 meshes with the spiral groove on the upper side of the synchronous drive gear ring 324. The synchronous drive gear ring 324 is arranged in the annular groove 312 of the fixed ring 31. A through hole is opened on the outer side of the fixed ring 31. A clamping drive motor 325 is fixed on the outer side of the fixed ring 31. A clamping drive gear 326 is arranged on the output shaft of the clamping drive motor 325. The clamping drive gear 326 meshes with the synchronous drive gear ring 324 through the through hole. The first rotation drive motor 35, the second rotation drive motor 36 and the clamping drive motor 325 are all electrically connected to the control box 2. By controlling the clamping drive motor 325 to rotate forward and reverse, under the cooperation of the spiral engagement protrusion 323 and the spiral groove, the synchronous drive gear ring 324 rotates to drive the engagement plate 322 to move along the radial groove, so that the two clamping rods 321 can synchronously clamp the welding gun 15.

[0048] The cleaning mechanism 4 includes a telescopic component 41, which is a telescopic cylinder or an electric telescopic rod. The fixed end of the telescopic component 41 is connected to the connecting rod 37, and the telescopic end of the telescopic component 41 is connected to the cleaning ring 42 through the connecting ear 421. The telescopic component 41 is electrically connected to the control box 2. The telescopic component 41 is provided with a cleaning ring 42, and the cleaning ring 42 is provided with a receiving groove 422. The bottom of the receiving groove 422 is provided with a bottom cleaning component 43, such as Figure 5 As shown, the bottom cleaning assembly 43 is provided with at least one and includes a guide tube 431, a support ring 432 is fixed inside the guide tube 431, a bottom adjustment spring 433 is provided on the support ring 432, the other end of the bottom adjustment spring 433 is connected to the guide rod 434, and a wedge-shaped cleaning block 435 is provided on the top of the guide rod 434.

[0049] like Figure 6 As shown, the inner wall of the accommodating groove 422 and the inner side of the cleaning ring 42 are both provided with side cleaning components 44, and the side cleaning components 44 are provided with at least one and include a trapezoidal cleaning plate 441, and the trapezoidal cleaning plate 441 is connected to a mounting block 443 through a plurality of side adjustment springs 442 arranged in parallel, and the cross-section of the mounting block 443 is dovetail-shaped, and the mounting block 443 is arranged in the mounting groove 423 on the inner wall of the accommodating groove 422 and the inner side of the cleaning ring 42.

[0050] A closed thread trimming mechanism 5 is provided at the bottom of the cleaning ring 42. The closed thread trimming mechanism 5 includes a first guide ring 51. A plurality of circumferentially distributed guide driving grooves 511 and limiting grooves 512 are provided inside the first guide ring 51. Figure 7-8 As shown, the guide block 521 on one side of the wire cutting plate 52 is arranged in the guide driving groove 511, and an elastic limit member is arranged in the guide block 521, and the elastic limit member includes a hollow fixed stud 522, and a limit column 523 is fixed in the hollow fixed stud 522 by a spring, and the limit column 523 is arranged in the limit groove 512; the driving column 524 on the other side of the wire cutting plate 52 is arranged in the through hole of the driving plate 53, and a limit disk 525 is arranged at one end of the driving column 524, and a plurality of driving plates 53 are circumferentially distributed in the second guide ring 54, and the second guide ring 54 is fixed at the bottom of the cleaning ring, and the wire cutting tooth ring 57 is meshed with the wire cutting gear 56, and the wire cutting gear 56 is connected to the wire cutting drive motor 55, and the wire cutting drive motor 55 is fixed on the cleaning ring 42, and the wire cutting drive motor 55 is electrically connected to the control box 2.

[0051] An oil immersion mechanism 6 is also provided, which includes an oil storage tank 61 arranged on the movable turntable 13, an oil supply pump 63 is provided on the oil outlet pipe 62 of the oil storage tank 61, the upper side surface of the cleaning ring 42 and one of the wire cutting plates 52 are connected to the oil outlet pipe 62 through a rotating joint, and an oil return pump 65 and a filter 66 are provided on the oil return pipe 64 of the oil storage tank 61, the lower side surface of the cleaning ring 42 and one of the wire cutting plates 52 are connected to the oil return pipe 64 through a rotating joint, the accommodating groove 422 of the cleaning ring 42 is an oil chamber, and an oil chamber is formed inside the wire cutting mechanism and the cleaning ring 42, and the two oil chambers realize the oil immersion of the welding gun 15 head, a fixed tube plate 313 is provided on the fixed ring 31, and at least one limiting through hole 314 is opened on the fixed tube plate 313 to avoid pipeline entanglement during the rotation process, and the oil supply pump 63 and the oil return pump 65 are both electrically connected to the control box 2. During the cleaning process, the welding gun 15 head is immersed in oil to achieve oil coating during the cleaning process. At the same time, the cleaned waste residue is filtered out by the filter 66 under the flow of oil, thereby achieving repeated use of the oil. In addition, the oil immersion method is more uniform in coating than the oil spraying method.

[0052] Example 2

[0053] The difference between this embodiment and embodiment 1 is that a cooling mechanism 7 is also provided. Figure 4 As shown, the cooling mechanism 7 includes a cooling ring 71 arranged on the upper side of the cleaning ring 42, and the inner side of the cooling ring 71 is provided with air outlet holes. The cooling ring 71 is connected to a cooling air pipe 72 through a rotary joint, and the cooling air pipe 72 passes through the limit through hole 314 and is connected to a cooling air pump 73. The cooling air pump 73 is installed on the movable turntable 13. An inner flexible sealing ring 424 and an outer flexible sealing ring 425 are arranged on the upper part of the inner wall of the cleaning ring 42, and the cooling air pump 73 is electrically connected to the control box 2. The temperature of the head of the welding gun 15 is too high, and the inner flexible sealing ring 424 and the outer flexible sealing ring 425 are easily damaged. In this embodiment, the inner flexible sealing ring 424 and the outer flexible sealing ring 425 are made of high-temperature resistant silicone material, which can withstand a temperature of 300 degrees Celsius. After the head of the welding gun 15 passes through the cooling ring 71, the temperature is lower than 300 degrees Celsius. After cleaning, the residual waste residue is scraped off under the action of the inner flexible sealing ring 424 and the outer flexible sealing ring 425 to improve the cleaning efficiency.

[0054] The working method of embodiment 2, the specific steps are as follows:

[0055] Step S1: Input the welding process of the parts to be processed through the control box 2.

[0056] Step S2: Welding is performed according to the welding process of the part to be processed, and the cleaning time point is determined according to the welding process of the part to be processed, and cleaning is performed when the part to be processed is converted in position or switched to the next part to be processed.

[0057] Step S3: When the cleaning time point is reached, the control box 2 adjusts the robot arm 14 so that the head of the welding gun 15 is set vertically to trim the wire.

[0058] The second rotary drive motor 36 is started to drive the connecting rod 37 to rotate toward the welding gun 15, and the telescopic assembly 41 is extended. When the cleaning ring 42 is opposite to the head of the welding gun 15, the second rotary drive motor 36 stops, the telescopic assembly 41 contracts, and the cooling air pump 73 is started to cool the head of the welding gun 15. The head of the welding gun 15 is gradually inserted into the cleaning ring 42. When the set wire trimming length is reached, the wire trimming drive motor 55 is started to run forward, so that the circumferentially distributed wire trimming plates 52 are close to each other for wire trimming, and the wire trimming is completed.

[0059] Step S4: After the wire trimming is completed, the gun is cleaned and oiled.

[0060] Start the oil supply pump 63 and the first rotary drive motor 35 at the same time, so that the wedge-shaped cleaning block 435 and the trapezoidal cleaning plate 441 rotate around the head of the welding gun 15 for cleaning. After the set time, turn off the oil supply pump 63 and the first rotary drive motor 35, and start the oil return pump 65 to filter and pump oil.

[0061] Step S5: After the oil is pumped out, the telescopic assembly 41 is extended, and the second rotary drive motor 36 is started to drive the connecting rod 37 to rotate away from the welding gun 15 and return to the initial position.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A self-cleaning welding device, comprising a welding robot body and a control box, wherein the welding robot body comprises a mobile base, a mounting arm is arranged on the mobile base, a mobile turntable is arranged on the mounting arm, a mechanical arm is arranged on the mobile turntable, and a welding gun is arranged on the mechanical arm, characterized in that: The welding gun is provided with a cleaning mechanism through a multi-directional rotating mechanism, the cleaning mechanism includes a telescopic assembly, a cleaning ring is provided on the telescopic assembly, a receiving groove is provided on the cleaning ring, a bottom cleaning assembly is provided at the bottom of the receiving groove, side cleaning assemblies are provided on the inner wall of the receiving groove and the inner side of the cleaning ring, and a closed wire cutting mechanism is provided at the bottom of the cleaning ring; The moving base, the moving turntable, the mechanical arm, the multi-directional rotating mechanism, the cleaning mechanism and the closed wire cutting mechanism are all electrically connected to the control box.

2. A self-cleaning welding device according to claim 1, characterized in that: The multi-directional rotation mechanism includes a fixed ring, a clamping assembly is provided on one side of the fixed ring, a rotating gear ring is provided on the other side of the fixed ring through a bearing, the rotating gear ring is meshed with a rotating gear, the rotating gear is connected to the first rotation drive motor, and two symmetrically arranged mounting plates are provided on the rotating gear ring, a second rotation drive motor is fixed on the mounting plates, and the output shaft of the second rotation drive motor is connected to a connecting rod.

3. A self-cleaning welding device according to claim 1, characterized in that: The clamping assembly includes at least two clamping rods, the clamping rods are connected with a meshing plate, the meshing plate is arranged in a radial slide groove of a fixed ring, a spiral meshing protrusion is arranged at the bottom of the meshing plate, the spiral meshing protrusion is meshed with a spiral groove on the upper side of a synchronous drive gear ring, the synchronous drive gear ring is arranged in an annular slide groove of the fixed ring, a through hole is opened on the outer side of the fixed ring, a clamping drive motor is fixed on the outer side of the fixed ring, a clamping drive gear is arranged on the output shaft of the clamping drive motor, and the clamping drive gear is meshed with the synchronous drive gear ring through the through hole; The first rotary drive motor, the second rotary drive motor and the clamping drive motor are all electrically connected to the control box.

4. A self-cleaning welding device according to claim 1, characterized in that: The telescopic component is a telescopic cylinder or an electric telescopic rod, the fixed end of the telescopic component is connected to the connecting rod, and the telescopic end of the telescopic component is connected to the cleaning ring through a connecting ear.

5. A self-cleaning welding device according to claim 1, characterized in that: The bottom cleaning assembly is provided with at least one and includes a guide tube, a support ring is fixed in the guide tube, a bottom adjustment spring is arranged on the support ring, the other end of the bottom adjustment spring is connected to the guide rod, and a wedge-shaped cleaning block is arranged on the top of the guide rod.

6. A self-cleaning welding device according to claim 1, characterized in that: The side cleaning assembly is provided with at least one and includes a trapezoidal cleaning plate, which is connected to a mounting block through a plurality of side adjustment springs arranged in parallel. The mounting block has a dovetail-shaped cross-section and is arranged in the mounting groove on the inner wall of the accommodating groove and the inner side of the cleaning ring.

7. A self-cleaning welding device according to claim 1, characterized in that: The closed-type thread trimming mechanism comprises a first guide ring, a plurality of guide drive grooves and limit grooves distributed circumferentially are arranged on the inner side of the first guide ring, a guide block on one side of the thread trimming plate is arranged in the guide drive groove, an elastic limit piece is arranged in the guide block, the elastic limit piece comprises a hollow fixed stud, a limit column is fixed in the hollow fixed stud by a spring, and the limit column is arranged in the limit groove; a drive column on the other side of the thread trimming plate is arranged in the through hole of the drive plate, and a limit disk is arranged at one end of the drive column, a plurality of drive plates are distributed circumferentially in the second guide ring, the second guide ring is fixed at the bottom of the cleaning ring, the thread trimming tooth ring is meshed with the thread trimming gear, the thread trimming gear is connected to a thread trimming drive motor, and the thread trimming drive motor is fixed on the cleaning ring; The thread trimmer drive motor is electrically connected to the control box.

8. A self-cleaning welding device according to claim 1, characterized in that: An oil immersion mechanism is also provided, which includes an oil storage tank arranged on the movable turntable, an oil supply pump is arranged on the oil outlet pipe of the oil storage tank, the side surface of the upper part of the cleaning ring and one of the shearing plates are connected to the oil outlet pipe through a rotating joint, an oil return pump and a filter are arranged on the oil return pipe of the oil storage tank, the side surface of the lower part of the cleaning ring and one of the shearing plates are connected to the oil return pipe through a rotating joint, a fixed tube plate is arranged on the fixed ring, and at least one limit through hole is opened on the fixed tube plate; The oil supply pump and the oil return pump are both electrically connected to the control box.

9. A self-cleaning welding device according to claim 8, characterized in that: A cooling mechanism is also provided, which includes a cooling ring arranged on the upper side of the cleaning ring, air outlet holes are opened on the inner side of the cooling ring, the cooling ring is connected to a cooling air pipe through a rotating joint, the cooling air pipe is connected to a cooling air pump through a limiting through hole, the cooling air pump is installed on the movable turntable, an inner flexible sealing ring and an outer flexible sealing ring are provided on the upper part of the inner wall of the cleaning ring, and the cooling air pump is electrically connected to the control box.

10. A working method of a self-cleaning welding device according to claim 9, characterized in that: The specific steps are as follows: Step S1: input the welding process of the parts to be processed through the control box; Step S2: welding is performed according to the welding process of the part to be processed, and a cleaning time point is determined according to the welding process of the part to be processed, and cleaning is performed when the part to be processed is converted in position or when the next part to be processed is switched; Step S3: When the cleaning time point is reached, the control box adjusts the robot arm so that the welding gun head is set vertically to trim the wire; The second rotary drive motor is started to drive the connecting rod to rotate toward the welding gun, and the telescopic assembly is extended at the same time. When the cleaning ring is opposite to the welding gun head, the second rotary drive motor stops, the telescopic assembly contracts, and the cooling air pump is started to cool the welding gun head. The welding gun head is gradually inserted into the cleaning ring. When the set wire trimming length is reached, the wire trimming drive motor is started to run forward, so that the wire trimming plates distributed on the circumference are close to each other to trim the wire, and the wire trimming is completed. Step S4: After the wire cutting is completed, the gun is cleaned and oiled; Start the oil supply pump and the first rotary drive motor at the same time, so that the wedge-shaped cleaning block and the trapezoidal cleaning plate rotate around the welding gun head for cleaning. After the set time, turn off the oil supply pump and the first rotary drive motor, and start the oil return pump to filter and pump oil; Step S5: After the oil is pumped out, the telescopic assembly is extended, and the second rotary drive motor is started to drive the connecting rod to rotate away from the welding gun and return to the initial position.

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