A DC welding machine and welding process for producing iron accessories

Abstract

The present invention relates to the technical field of iron accessory welding, and proposes a direct current electric welding machine and welding process for iron accessory production, wherein a direct current electric welding machine for iron accessory production comprises an electric welding machine body and a direct current welding gun head, and also comprises a welding bracket, a welding head positioning mechanism, a welding positioning frame, a welding head mounting tube, a welding head front end seam cleaning mechanism and a welding head rear end seam cleaning mechanism, wherein the welding head positioning mechanism is arranged on the welding bracket, the welding positioning frame is arranged on the welding head positioning mechanism, the electric welding machine body is arranged on the welding positioning frame, and the welding head mounting tube is connected to the welding positioning frame. Through the above technical scheme, the problem that the direct current welding machine in the prior art is difficult to process the size and cleanliness of the weld in the process of welding iron accessories, and it is also difficult to process the welding slag formed after welding, which seriously affects the efficiency and quality of the production of iron accessory weldments.

Description

Technical Field

[0001] The invention relates to the technical field of iron accessory welding, and in particular to a direct current welding machine and a welding process for producing iron accessories. Background Art

[0002] Iron accessories refer to accessories used to fix, connect, support and seal machinery and equipment. They are generally made of iron and are usually used together with other mechanical parts. Iron accessories are widely used in machinery manufacturing, construction, transportation, electric power, chemical industry and other industries.

[0003] The production of iron accessories is inseparable from the welding processing of iron accessory parts. The prior art generally adopts a DC welding machine in the process of welding and producing iron accessories. The DC welding machines in the prior art are mostly single-function in the welding process and can only perform welding operations on iron accessories. However, it is well known that the welding quality of the DC welding machine not only has certain requirements on the diameter and cleanliness of the weld, but also after the welding is completed, a large amount of welding slag will appear at the weld position of the iron accessories. The DC welding machines in the prior art are not only difficult to handle the size and cleanliness of the weld in the process of welding iron accessories, but also difficult to handle the welding slag formed after welding, which seriously affects the efficiency and quality of the production of iron accessory weldments. Summary of the invention

[0004] The present invention proposes a direct current welding machine and a welding process for producing iron accessories, so as to solve the problem raised in the background technology that the direct current welding machine in the prior art is not only difficult to handle the size and cleanliness of the weld during the welding of iron accessories, but also difficult to handle the welding slag formed after welding, which seriously affects the efficiency and quality of the production of iron accessory weldments.

[0005] The technical scheme of the present invention is as follows: A DC electric welding machine for iron accessory production comprises an electric welding machine body and a DC welding gun head, and also comprises a welding bracket, a welding head positioning mechanism, a welding positioning frame, a welding head mounting tube, a welding head front end seam cleaning mechanism and a welding head rear end seam cleaning mechanism;

[0006] The welding head positioning mechanism is arranged on the welding bracket;

[0007] The welding position adjustment frame is arranged on the welding head position adjustment mechanism, and the welding machine body is installed on the welding position adjustment frame;

[0008] The welding head installation tube is connected to the welding position adjustment frame, the DC welding gun head is detachably installed in the welding head installation tube, and the DC welding gun head is connected to the electric welding machine body;

[0009] The welding head front end seam cleaning mechanism is installed on the welding position adjustment frame and is used to clean the weld of the iron accessories;

[0010] The welding head rear end seam cleaning mechanism is installed on the welding position adjustment frame, and the welding head front end seam cleaning mechanism is located in the welding head rear end seam cleaning mechanism, and is used for cleaning the welding seam of the iron accessories.

[0011] As a preferred technical solution of the present application, the welding head front end seam cleaning mechanism and the welding head rear end seam cleaning mechanism have the same structure, and both the welding head front end seam cleaning mechanism and the welding head rear end seam cleaning mechanism include a seam cleaning power adjustment ring, a seam cleaning adjustment component and a seam cleaning power component with miscellaneous functions;

[0012] The seam cleaning power adjustment ring is rotatably arranged on the welding adjustment frame;

[0013] The seam cleaning position adjustment component is arranged on the welding position adjustment frame, and the seam cleaning position adjustment component is connected with the seam cleaning power position adjustment ring, and is used to drive the seam cleaning power position adjustment ring to rotate;

[0014] The seam cleaning power assembly is arranged on the seam cleaning power positioning ring.

[0015] Further on the basis of the above scheme, the seam cleaning and positioning assembly comprises a positioning internal gear ring, a positioning power motor and a positioning gear;

[0016] The positioning inner gear ring is arranged on the seam cleaning power positioning ring;

[0017] The positioning power motor is installed on the welding positioning frame;

[0018] The positioning gear is arranged on the output end of the positioning power motor, and the positioning gear is meshed with the positioning internal gear ring.

[0019] Further on the basis of the above scheme, the seam cleaning power assembly includes a seam cleaning power box, a seam cleaning power frame, a seam cleaning position adjustment electric cylinder, a seam cleaning pressure sensor, a seam cleaning power rotating rod, a three-jaw chuck, a seam cleaning grinding head, a seam cleaning power motor, a seam cleaning long gear, a seam cleaning short gear, a debris suction cover, a debris removal elbow, a debris suction elbow, an air intake pipe, an air intake power rotating rod, a bevel gear 1, a bevel gear 2 and an air intake fan blade;

[0020] The seam cleaning power box is arranged on the seam cleaning power adjustment ring;

[0021] The seam cleaning power frame is arranged on the seam cleaning power box;

[0022] The seam cleaning position adjustment electric cylinder is installed in the seam cleaning power box;

[0023] The seam cleaning pressure sensor is arranged on the output end of the seam cleaning and positioning electric cylinder;

[0024] One end of the seam cleaning power rotating rod is rotatably arranged on the detection end of the seam cleaning pressure sensor, and the other end of the seam cleaning power rotating rod penetrates the seam cleaning power frame;

[0025] The three-jaw chuck is arranged on the seam cleaning power rotating rod;

[0026] The seam cleaning and grinding head is detachably arranged in the three-jaw chuck;

[0027] The seam cleaning power motor is installed in the seam cleaning power box;

[0028] The seam cleaning long gear is arranged on the output end of the seam cleaning power motor;

[0029] The seam cleaning short gear is arranged on the seam cleaning power rotating rod, and the seam cleaning short gear is meshed with the seam cleaning long gear;

[0030] The debris suction cover is arranged on the seam cleaning power frame through a debris suction limit spring, the seam cleaning power rotating rod passes through the debris suction cover, and the seam cleaning grinding head is located in the debris suction cover;

[0031] The impurity removal elbow is arranged on the seam cleaning power frame;

[0032] One end of the impurity suction elbow is connected to the impurity suction cover, and the other end of the impurity suction elbow is sealed and slidably sleeved in the impurity removal elbow;

[0033] The air inlet pipe is connected to the impurity removal elbow;

[0034] The air intake power rotating rod is rotatably arranged on the seam cleaning power box through a positioning rotating seat, and one end of the air intake power rotating rod penetrates into the air intake pipe;

[0035] The bevel gear 1 is arranged on the output end of the seam cleaning power motor;

[0036] The bevel gear 2 is arranged on the intake power rotating rod, and the bevel gear 1 is meshed with the bevel gear 2;

[0037] The air intake fan blades are arranged on the air intake power rotating rod, and the air intake fan blades are located in the air intake pipe.

[0038] On the basis of the above scheme, the welding head positioning mechanism includes an X-axis positioning component, a Y-axis positioning component and a Z-axis positioning component;

[0039] The X-axis positioning assembly is arranged on the welding bracket;

[0040] The Y-axis positioning component is arranged on the X-axis positioning component;

[0041] The Z-axis positioning assembly is arranged on the Y-axis positioning assembly, and the welding positioning frame is arranged on the Z-axis positioning assembly.

[0042] Further on the basis of the above scheme, the X-axis positioning assembly includes an X-axis positioning slide and an X-axis positioning electric cylinder;

[0043] The X-axis positioning slide is slidably arranged on the welding bracket;

[0044] The X-axis positioning electric cylinder is installed on one side of the welding bracket, and the output end of the X-axis positioning electric cylinder is connected to one end of the X-axis positioning slide.

[0045] Further on the basis of the above scheme, the Y-axis positioning assembly includes a Y-axis positioning slide plate and a Y-axis positioning electric cylinder;

[0046] The Y-axis positioning slide is slidably arranged on the X-axis positioning slide;

[0047] The Y-axis positioning electric cylinder is installed on the X-axis positioning slide, and the output end of the Y-axis positioning electric cylinder is connected to the Y-axis positioning slide.

[0048] Further on the basis of the above scheme, the Z-axis positioning assembly includes a Z-axis positioning electric cylinder and a positioning pressure sensor;

[0049] The Z-axis positioning electric cylinder is installed on the Y-axis positioning slide;

[0050] The positioning pressure sensor is installed on the output end of the Z-axis positioning electric cylinder, and the welding positioning frame is installed on the detection end of the positioning pressure sensor.

[0051] On the basis of the above scheme, the welding bracket is further provided with a weldment positioning assembly, and the weldment positioning assembly is provided with two groups, and the two groups of the weldment positioning assemblies are symmetrically arranged;

[0052] The weldment positioning assembly includes a weldment positioning plate, a weldment positioning electric cylinder, a weldment positioning frame, a weldment positioning motor and a weldment mechanical clamp;

[0053] The weldment positioning plate is arranged on the welding bracket;

[0054] The weldment positioning electric cylinder is installed on one side of the weldment positioning plate;

[0055] The weldment positioning frame is arranged on the output end of the weldment positioning electric cylinder;

[0056] The weldment positioning motor is installed on the weldment positioning frame;

[0057] The weldment mechanical clamp is installed on the output end of the weldment positioning motor.

[0058] A welding process for producing iron accessories, using the above-mentioned DC welding machine for producing iron accessories, comprises the following steps:

[0059] Step 1: Positioning the iron accessories. When welding the iron accessories, clamp the two iron accessories to be welded on the two weldment mechanical clamps respectively, and move the position of the iron accessories by starting the weldment positioning motor and the weldment positioning electric cylinder, so that the welding positions of the two iron accessories are in contact and a weld is formed;

[0060] Step 2: welding the weld seam. After the iron accessory is positioned, start the X-axis positioning electric cylinder, the Y-axis positioning electric cylinder and the Z-axis positioning electric cylinder to make the DC welding gun head contact the position of the weld seam on the iron accessory, and move the DC welding gun head along the position of the weld seam. During the movement of the DC welding gun head, start the electric welding machine body to make the DC welding gun head weld the weld seam.

[0061] Step 3: Weld cleaning: Before welding the weld, the weld cleaning and grinding head in the weld cleaning mechanism at the front end of the weld head is preferentially brought into contact with the weld to be welded through the weld head positioning mechanism, and the weld cleaning and grinding head is rotated by starting the weld cleaning power motor. When the weld cleaning and grinding head rotates, the weld cleaning and grinding head is driven by the weld head positioning mechanism to move along the weld, so that the weld to be welded can be polished and cleaned;

[0062] Step 4: Adjust the grinding head. When the welding head adjustment mechanism drives the seam cleaning grinding head to move, the welding head adjustment mechanism can drive the DC welding gun head to perform synchronous welding on the cleaned weld. When the weld is bent, the seam cleaning grinding head in the seam cleaning mechanism at the front end of the welding head reaches the bent position of the weld, and the adjustment power motor can be started synchronously to make the seam cleaning power adjustment ring drive the seam cleaning grinding head to rotate and adjust the position, so that the seam cleaning grinding head is always in the weld position. Similarly, after the DC welding gun head completes welding the weld, the seam cleaning grinding head in the seam cleaning mechanism at the rear end of the welding head can grind the weld after welding.

[0063] Step five, impurity removal. As the seam cleaning mechanism at the front end of the welding head and the seam cleaning and grinding heads in the seam cleaning mechanism at the rear end of the welding head clean the weld before and after welding, the air intake fan blades can be rotated as the output end of the seam cleaning power motor rotates. When the air intake fan blades rotate, external gas will enter the impurity removal elbow through the air intake pipe. When the gas flow rate in the impurity removal elbow increases, the air pressure in the impurity removal elbow decreases, and the gas in the impurity suction hood will enter the impurity removal elbow along the impurity suction elbow. At the same time as the gas in the impurity suction hood enters the impurity removal elbow, the impurities polished off by the seam cleaning and grinding heads will enter the impurity removal elbow at the same time under the action of suction. By filtering the gas discharged from the impurity removal elbow, the impurities generated by the seam cleaning and grinding heads can be centrally processed.

[0064] The working principle and beneficial effects of the present invention are:

[0065] 1. The present invention can clamp and fix the iron accessories to be welded by the weldment mechanical clamp when positioning the iron accessories. After the iron accessories are clamped, the two iron accessories can be moved relative to each other by starting the weldment positioning electric cylinder, and the iron accessories can be turned over by starting the weldment adjustment motor, and the angle of the iron accessories can be adjusted to ensure that the weld position of the iron accessories is always below the DC welding gun head;

[0066] 2. The present invention, when welding iron accessories, by starting the X-axis positioning electric cylinder, the output end of the X-axis positioning electric cylinder will drive the X-axis positioning slide to move, by starting the Y-axis positioning electric cylinder, the output end of the Y-axis positioning electric cylinder can drive the Y-axis positioning slide to move, by starting the Z-axis positioning electric cylinder, the welding positioning frame can be driven to move, and the welding seasoning rack drives the welding head installation tube to move, so that the DC welding gun head can be moved to any position within a certain range above the iron accessory, and the DC welding gun head can be moved along the weld position of the iron accessory. When the DC welding gun head contacts the weld, the contact pressure between the DC welding gun head and the iron accessory can be detected by the positioning pressure sensor;

[0067] 3. In the present invention, when cleaning the weld before and after welding, the weld cleaning and grinding head in the weld cleaning mechanism at the front end of the weld head is preferentially brought into contact with the weld to be welded through the weld head positioning mechanism, and the weld cleaning power motor is started, and the output end of the weld cleaning power motor drives the long weld cleaning gear to rotate, and the long weld cleaning gear drives the short weld cleaning gear to rotate, and the short weld cleaning gear drives the weld cleaning power rotating rod to rotate, and the weld cleaning power rotating rod drives the three-jaw chuck to rotate, and the three-jaw chuck drives the weld cleaning and grinding head to rotate, and when the weld cleaning and grinding head rotates, the weld cleaning pressure sensor can be driven to move by starting the weld cleaning positioning electric cylinder, and the weld cleaning pressure sensor can be driven to move by ... power rotating rod, and the weld cleaning power rotating rod drives the three-jaw chuck to rotate, and the three-jaw chuck drives the weld cleaning and grinding head to rotate. The movement of the sensor drives the seam cleaning power rotating rod to move, and the distance between the seam cleaning grinding head and the weld is adjusted. By slightly adjusting the position of the seam cleaning grinding head, the seam cleaning grinding head is in contact with the weld, and a small gap is reserved between the bottom of the impurity suction hood and the surface of the iron accessory. This gap is the smoke removal gap. As the seam cleaning grinding head rotates to clean the welding gap, the seam cleaning pressure sensor can detect the contact pressure between the seam cleaning grinding head and the weld. The pressure value detected by the adjustment pressure sensor minus the pressure values ​​detected by the two seam cleaning pressure sensors is the contact pressure between the DC welding gun head and the iron accessory.

[0068] 4. In the present invention, as the seam cleaning and grinding head is grinding and cleaning the weld, the rotation of the output end of the seam cleaning power motor drives the bevel gear 1 to rotate, the bevel gear 1 drives the bevel gear 2 to rotate, the bevel gear 2 drives the air intake power rotating rod to rotate, the air intake power rotating rod drives the air intake fan blades to rotate, when the air intake fan blades rotate, the external gas will enter the impurity removal elbow through the air intake pipe, when the gas flow rate in the impurity removal elbow increases, the air pressure in the impurity removal elbow decreases, the external gas will enter the impurity suction hood through the smoke removal gap, the gas in the impurity suction hood will enter the impurity removal elbow along the impurity suction elbow, when the gas in the impurity suction hood enters the impurity removal elbow, at the same time as the gas in the impurity suction hood enters the impurity removal elbow, the impurities polished by the seam cleaning and grinding head will enter the impurity removal elbow at the same time under the action of suction, by filtering the gas discharged from the impurity removal elbow, the impurities generated by the seam cleaning and grinding head can be centrally processed;

[0069] According to the present invention, while the welding head positioning mechanism drives the seam cleaning and grinding head to move, the welding head positioning mechanism can drive the DC welding gun head to synchronously weld the cleaned weld, and when the weld is bent, after the seam cleaning and grinding head in the seam cleaning mechanism at the front end of the welding head reaches the bent position of the weld, the positioning power motor can be synchronously started, the positioning power motor drives the positioning gear to rotate, the positioning gear drives the positioning inner gear ring to rotate, the positioning inner gear ring drives the seam cleaning power positioning ring to rotate, and the seam cleaning and grinding head is driven to rotate and adjust through the seam cleaning power positioning ring, so that the seam cleaning and grinding head is always in the weld position. Similarly, after the DC welding gun head completes welding the weld, the seam cleaning and grinding head located in the seam cleaning mechanism at the rear end of the welding head can grind the weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0071] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0072] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0073] Figure 3 It is a partial cross-sectional structural diagram of the cooperation of the Z-axis positioning assembly, the welding machine body, the DC welding gun head, the welding positioning frame, the welding head mounting tube, the welding head front end seam cleaning mechanism and the welding head rear end seam cleaning mechanism in the present invention;

[0074] Figure 4 For the present invention Figure 3 A schematic diagram of the local enlarged structure at B in the middle;

[0075] Figure 5 For the present invention Figure 3 A schematic diagram of the local enlarged structure at C in the middle;

[0076] Figure 6 It is a structural schematic diagram of the cooperation between the welding head front end seam cleaning mechanism and the welding head rear end seam cleaning mechanism in the present invention;

[0077] Figure 7 For the present invention Figure 6 A schematic diagram of the local enlarged structure at D in the middle;

[0078] Figure 8 It is a schematic diagram of the structure of the weldment positioning assembly in the present invention.

[0079] In the figure: 001, welding head positioning mechanism; 002, welding head front end seam cleaning mechanism; 003, welding head rear end seam cleaning mechanism;

[0080] 1. Electric welding machine body; 2. DC welding gun head; 3. Welding bracket; 4. Welding adjustment frame; 5. Welding head mounting tube; 6. Seam cleaning power adjustment ring; 7. Adjustment inner gear ring; 8. Adjustment power motor; 9. Adjustment gear; 10. Seam cleaning power box; 11. Seam cleaning power frame; 12. Seam cleaning adjustment electric cylinder; 13. Seam cleaning pressure sensor; 14. Seam cleaning power rotating rod; 15. Three-jaw chuck; 16. Seam cleaning grinding head; 17. Seam cleaning power motor; 18. Seam cleaning long gear; 19. Seam cleaning short gear; 20. Absorbing hood; 2 1. Trash suction limit spring; 22. Trash removal elbow; 23. Trash suction elbow; 24. Air intake pipe; 25. Air intake power rotating rod; 26. Bevel gear one; 27. Bevel gear two; 28. Air intake fan blade; 29. ​​X-axis positioning slide; 30. X-axis positioning electric cylinder; 31. Y-axis positioning slide; 32. Y-axis positioning electric cylinder; 33. Z-axis positioning electric cylinder; 34. Positioning pressure sensor; 35. Weldment positioning plate; 36. Weldment positioning electric cylinder; 37. Weldment positioning frame; 38. Weldment positioning motor; 39. Weldment mechanical clamp. DETAILED DESCRIPTION

[0081] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0082] Embodiment 1, as Figures 1 to 8 As shown, this embodiment proposes a DC electric welding machine for iron accessories production, including an electric welding machine body 1 and a DC welding gun head 2, and also includes a welding bracket 3, a welding head positioning mechanism 001, a welding positioning frame 4, a welding head mounting tube 5, a welding head front end seam cleaning mechanism 002 and a welding head rear end seam cleaning mechanism 003.

[0083] As mentioned above, the welding head positioning mechanism 001 is arranged on the welding bracket 3, and the welding head positioning mechanism 001 includes an X-axis positioning component, a Y-axis positioning component and a Z-axis positioning component. The X-axis positioning component is arranged on the welding bracket 3, the Y-axis positioning component is arranged on the X-axis positioning component, the Z-axis positioning component is arranged on the Y-axis positioning component, and the welding positioning frame 4 is arranged on the Z-axis positioning component.

[0084] Among them, the X-axis positioning assembly includes an X-axis positioning slide 29 and an X-axis positioning electric cylinder 30. The X-axis positioning slide 29 is slidably set on the welding bracket 3, and the X-axis positioning electric cylinder 30 is installed on one side of the welding bracket 3. The output end of the X-axis positioning electric cylinder 30 is connected to one end of the X-axis positioning slide 29.

[0085] Among them, the Y-axis positioning assembly includes a Y-axis positioning slide 31 and a Y-axis positioning electric cylinder 32. The Y-axis positioning slide 31 is slidably set on the X-axis positioning slide 29, and the Y-axis positioning electric cylinder 32 is installed on the X-axis positioning slide 29. The output end of the Y-axis positioning electric cylinder 32 is connected to the Y-axis positioning slide 31.

[0086] Among them, the Z-axis positioning assembly includes a Z-axis positioning electric cylinder 33 and a positioning pressure sensor 34. The Z-axis positioning electric cylinder 33 is installed on the Y-axis positioning slide 31, the positioning pressure sensor 34 is installed on the output end of the Z-axis positioning electric cylinder 33, and the welding positioning frame 4 is installed on the detection end of the positioning pressure sensor 34.

[0087] Specifically, when welding iron accessories, by starting the X-axis positioning electric cylinder 30, the output end of the X-axis positioning electric cylinder 30 will drive the X-axis positioning slide 29 to move, by starting the Y-axis positioning electric cylinder 32, the output end of the Y-axis positioning electric cylinder 32 can drive the Y-axis positioning slide 31 to move, by starting the Z-axis positioning electric cylinder 33, the welding positioning frame 4 can be driven to move, and the welding seasoning rack can be used to drive the welding head mounting tube 5 to move, so that the DC welding gun head 2 can be moved to any position within a certain range above the iron accessory, and the DC welding gun head 2 can be moved along the weld position of the iron accessory. When the DC welding gun head 2 contacts the weld, the contact pressure between the DC welding gun head 2 and the iron accessory can be detected by the positioning pressure sensor 34.

[0088] As mentioned above, the welding position adjustment frame 4 is arranged on the welding head position adjustment mechanism 001, the electric welding machine body 1 is installed on the welding position adjustment frame 4, the welding head mounting tube 5 is connected to the welding position adjustment frame 4, the DC welding gun head 2 is detachably mounted in the welding head mounting tube 5, and the DC welding gun head 2 is connected to the electric welding machine body 1.

[0089] Specifically, the electric welding machine body 1 is started, and the welding operation can be performed on the weld through the DC welding gun head 2. The specific structure of the electric welding machine body 1 and the DC welding gun head 2, and the connection method between the electric welding machine body 1 and the DC welding gun head 2 are all prior arts known to those skilled in the art. The specific structure and installation method are not the main innovation points of the present application, and will not be described in detail here.

[0090] As mentioned above, the welding head front end seam cleaning mechanism is installed on the welding positioning frame 4, which is used to clean the welds of iron accessories. The welding head rear end seam cleaning mechanism 003 is installed on the welding positioning frame 4. The welding head front end seam cleaning mechanism 002 is located in the welding head rear end seam cleaning mechanism 003, which is used to clean the welds of iron accessories.

[0091] The seam cleaning mechanism 002 at the front end of the welding head and the seam cleaning mechanism 003 at the rear end of the welding head have the same structure. Both the seam cleaning mechanism 002 at the front end of the welding head and the seam cleaning mechanism 003 at the rear end of the welding head include a seam cleaning power positioning ring 6, a seam cleaning positioning component and a seam cleaning power component with miscellaneous functions. The seam cleaning power positioning ring 6 is rotatably arranged on the welding positioning frame 4, the seam cleaning positioning component is arranged on the welding positioning frame 4, and the seam cleaning positioning component is connected to the seam cleaning power positioning ring 6 for driving the seam cleaning power positioning ring 6 to rotate, and the seam cleaning power component is arranged on the seam cleaning power positioning ring 6.

[0092] Among them, the seam cleaning and positioning assembly includes a positioning internal gear ring 7, a positioning power motor 8 and a positioning gear 9. The positioning internal gear ring 7 is arranged on the seam cleaning power positioning ring 6, the positioning power motor 8 is installed on the welding positioning frame 4, and the positioning gear 9 is arranged on the output end of the positioning power motor 8. The positioning gear 9 is meshed with the positioning internal gear ring 7.

[0093] The seam cleaning power assembly includes a seam cleaning power box 10, a seam cleaning power frame 11, a seam cleaning position adjustment electric cylinder 12, a seam cleaning pressure sensor 13, a seam cleaning power rotating rod 14, a three-jaw chuck 15, a seam cleaning grinding head 16, a seam cleaning power motor 17, a seam cleaning long gear 18, a seam cleaning short gear 19, a debris suction cover 20, a debris removal elbow 22, a debris suction elbow 23, an air intake pipe 24, an air intake power rotating rod 25, a bevel gear 1 26, a bevel gear 2 27 and an air intake fan blade 28. The seam cleaning power box 10 is arranged on the seam cleaning power position adjustment ring 6. The power frame 11 is arranged on the seam cleaning power box 10, the seam cleaning position adjustment electric cylinder 12 is installed in the seam cleaning power box 10, the seam cleaning pressure sensor 13 is arranged on the output end of the seam cleaning position adjustment electric cylinder 12, one end of the seam cleaning power rotating rod 14 is rotatably arranged on the detection end of the seam cleaning pressure sensor 13, the other end of the seam cleaning power rotating rod 14 passes through the seam cleaning power frame 11, the three-jaw chuck 15 is arranged on the seam cleaning power rotating rod 14, the seam cleaning grinding head 16 is detachably arranged in the three-jaw chuck 15, and the seam cleaning power motor 17 is installed in the seam cleaning power box 10, the long seam cleaning gear 18 is arranged on the output end of the seam cleaning power motor 17, the short seam cleaning gear 19 is arranged on the seam cleaning power rotating rod 14, the short seam cleaning gear 19 is meshed with the long seam cleaning gear 18, the debris suction cover 20 is arranged on the seam cleaning power frame 11 through the debris suction limit spring 21, the seam cleaning power rotating rod 14 passes through the debris suction cover 20, the seam cleaning grinding head 16 is located in the debris suction cover 20, the debris removal elbow 22 is arranged on the seam cleaning power frame 11, one end of the debris suction elbow 23 is connected to the debris suction cover 20, and the other end of the debris suction elbow 23 is sealed The sliding sleeve is arranged in the impurity removing bent pipe 22, the air intake pipe 24 is connected to the impurity removing bent pipe 22, the air intake power rotating rod 25 is rotatably arranged on the seam cleaning power box 10 through a positioning rotating seat, one end of the air intake power rotating rod 25 passes through the air intake pipe 24, bevel gear 1 26 is arranged on the output end of the seam cleaning power motor 17, bevel gear 27 is arranged on the air intake power rotating rod 25, bevel gear 1 26 is meshed with bevel gear 27, air intake fan blades 28 are arranged on the air intake power rotating rod 25, and the air intake fan blades 28 are located in the air intake pipe 24.

[0094] Specifically, when cleaning the weld before and after welding, the weld cleaning and grinding head 16 in the weld cleaning mechanism 002 at the front end of the weld head is preferentially brought into contact with the weld to be welded through the weld head positioning mechanism 001, and the weld cleaning power motor 17 is started, and the output end of the weld cleaning power motor 17 drives the weld cleaning long gear 18 to rotate, and the weld cleaning long gear 18 drives the weld cleaning short gear 19 to rotate, and the weld cleaning short gear 19 drives the weld cleaning power rotating rod 14 to rotate, and the weld cleaning power rotating rod 14 drives the three-jaw chuck 15 to rotate, and the three-jaw chuck 15 drives the weld cleaning and grinding head 16 to rotate, and when the weld cleaning and grinding head 16 rotates, the weld cleaning pressure sensor 13 can be driven to move by starting the weld cleaning positioning electric cylinder 12. The movement of the seam cleaning pressure sensor 13 drives the seam cleaning power rotating rod 14 to move, and the distance between the seam cleaning grinding head 16 and the weld is adjusted. By slightly adjusting the position of the seam cleaning grinding head 16, the seam cleaning grinding head 16 is in contact with the weld, and a small gap is reserved between the bottom of the suction hood 20 and the surface of the iron accessory. This gap is the smoke removal gap. As the seam cleaning grinding head 16 rotates to grind and clean the welding gap, the seam cleaning pressure sensor 13 can detect the contact pressure between the seam cleaning grinding head 16 and the weld. The pressure value detected by the adjustment pressure sensor 34 minus the detection pressure values ​​of the two seam cleaning pressure sensors 13 is the contact pressure between the DC welding gun head 2 and the iron accessory.

[0095] It should be supplemented that, by slightly adjusting the contact position between the seam cleaning and grinding head 16 and the weld, the movement of the seam cleaning power rotating rod 14 drives the seam cleaning short gear 19 to move, and the seam cleaning short gear 19 slides on the seam cleaning long gear 18, but the seam cleaning long gear 18 and the seam cleaning short gear 19 are always in a meshing state. By setting a seam cleaning and grinding head 16 that can be slightly adjusted, before welding the iron accessories with more serious weld deformation, the DC welding gun head 2 can be pre-separated from the weld, and by adjusting the position of the seam cleaning and grinding head 16, the seam cleaning and grinding head 16 can be pre-contacted with the weld, and the position of the weld can be independently cleaned and chamfered to facilitate the welding operation of the DC welding gun head 2.

[0096] As the seam cleaning and grinding head 16 is grinding and cleaning the weld, the rotation of the output end of the seam cleaning power motor 17 drives the bevel gear 1 26 to rotate, the bevel gear 1 26 drives the bevel gear 27 to rotate, the bevel gear 27 drives the air intake power rotating rod 25 to rotate, the air intake power rotating rod 25 drives the air intake fan blades 28 to rotate, when the air intake fan blades 28 rotate, the external gas will enter the impurity removal elbow 22 through the air intake pipe 24, when the gas flow rate in the impurity removal elbow 22 increases, the impurity removal The air pressure in the elbow 22 is reduced, and the external gas will enter the impurity suction hood 20 through the smoke removal gap, and the gas in the impurity suction hood 20 will enter the impurity removal elbow 22 along the impurity suction elbow 23. At the same time as the gas in the impurity suction hood 20 enters the impurity removal elbow 22, the impurities polished off by the seam cleaning and grinding head 16 will simultaneously enter the impurity removal elbow 22 under the action of suction. By filtering the gas discharged from the impurity removal elbow 22, the impurities generated by the seam cleaning and grinding head 16 can be centrally processed.

[0097] It should be supplemented that, by providing the debris suction hood 20, not only can the debris polished off by the seam cleaning and grinding head 16 be effectively blocked to prevent the debris from splashing, but also when the DC welding gun head 2 generates smoke during the welding process, most of the smoke will enter the debris suction hood 20 through the smoke removal gap and be uniformly purified along with the debris removal elbow 22. Moreover, while the debris removal hood is moving, when the surface of the iron accessory is adhered or attached to other metal hard objects, the hard objects will touch the debris suction hood 20 in advance. At this time, the debris suction limit spring 21 shrinks and deforms, and the debris suction hood 20 will transmit the abnormal contact pressure to the positioning pressure sensor 34. When the positioning pressure sensor 34 detects an abnormal pressure value, it will alarm, emergency stop and other actions to prevent the seam cleaning and grinding head 16 from instantly touching a large area of ​​hard objects and causing damage.

[0098] It is further explained that the size of the smoke removal gap needs to be pre-selected according to the depth of the weld on the iron accessory and the position between the impurity suction hood 20 and the DC welding gun to ensure that when the DC welding gun is welding normally, the gas flow rate when the external gas enters the impurity suction hood 20 through the smoke removal gap can blow and carry the polished residue.

[0099] Furthermore, while the welding head positioning mechanism 001 drives the seam cleaning and grinding head 16 to move, the welding head positioning mechanism 001 can drive the DC welding gun head 2 to perform synchronous welding operations on the cleaned weld, and when the position of the weld is bent, after the seam cleaning and grinding head 16 in the seam cleaning mechanism 002 at the front end of the welding head reaches the bent position of the weld, the positioning power motor 8 can be started synchronously, and the positioning power motor 8 drives the positioning gear 9 to rotate, and the positioning gear 9 drives the positioning internal gear ring 7 to rotate, and the positioning internal gear ring 7 drives the seam cleaning power positioning ring 6 to rotate, and the seam cleaning and grinding head 16 is driven by the seam cleaning power positioning ring 6 to rotate and adjust, so that the seam cleaning and grinding head 16 is always in the weld position. Similarly, after the DC welding gun head 2 completes welding the weld, the seam cleaning and grinding head 16 located in the seam cleaning mechanism 003 at the rear end of the welding head can grind the weld after welding.

[0100] It should be supplemented that, in the actual working process, the seam cleaning and grinding head 16 located in the seam cleaning mechanism 002 at the front end of the welding head is best selected as a conical grinding head. Through the rotation of the conical grinding head, not only the weld can be polished, but also the weld position can be chamfered, which is convenient for the welding operation of the DC welding gun head 2. The seam cleaning and grinding head 16 located in the seam cleaning mechanism 003 at the rear end of the welding head is best selected as a parallel grinding head. The parallel grinding head can be used to grind the weld after welding, thereby improving the aesthetics of the iron accessories after welding and improving the quality of the weld.

[0101] When the positioning power motor 8 is started to move the seam cleaning and grinding head 16 along the weld, the angle at the bend of the weld should not be less than 90°.

[0102] As mentioned above, a weldment positioning assembly is also provided on the welding bracket 3, and two groups of weldment positioning assemblies are provided, and the two groups of weldment positioning assemblies are symmetrically arranged. The weldment positioning assembly includes a weldment positioning plate 35, a weldment positioning electric cylinder 36, a weldment positioning frame 37, a weldment positioning motor 38 and a weldment mechanical clamp 39. The weldment positioning plate 35 is arranged on the welding bracket 3, the weldment positioning electric cylinder 36 is installed on one side of the weldment positioning plate 35, the weldment positioning frame 37 is arranged on the output end of the weldment positioning electric cylinder 36, the weldment positioning motor 38 is installed on the weldment positioning frame 37, and the weldment mechanical clamp 39 is installed on the output end of the weldment positioning motor 38.

[0103] When positioning the iron accessories, the iron accessories to be welded can be clamped and fixed by the weldment mechanical clamp 39. After the iron accessories are clamped, the two iron accessories can be moved relative to each other by starting the weldment positioning electric cylinder 36, and the iron accessories can be driven to flip by starting the weldment adjustment motor, and the angle of the iron accessories can be adjusted to ensure that the weld position of the iron accessories is always below the DC welding gun head 2.

[0104] It should be noted that when welding batches of iron accessories, an automatic loading device, such as a loading robot arm, can be set on one side of the mechanical clamp to ensure that the weldment mechanical clamp 39 can stably clamp the iron accessories while accurately positioning the loading position of the iron accessories. The weldment mechanical clamp 39 is a common mechanical device commonly used for clamping iron accessories in the prior art. The specific structure is not the main innovation of this application and will not be elaborated on here.

[0105] It is further explained that the present application is applicable to the welding production of flat iron accessories, and is not applicable to the welding processing of iron accessories with curved or uneven surfaces.

[0106] Embodiment 2: Embodiment 2 of the present application further explains, based on Embodiment 1, a welding process for producing iron accessories:

[0107] Positioning of iron accessories. When welding and processing iron accessories, two iron accessories to be welded are clamped on two weldment mechanical clamps 39 respectively, and the position of the iron accessories is moved by starting the weldment positioning motor 38 and the weldment positioning electric cylinder 36, so that the welding positions of the two iron accessories are in contact and a weld is formed.

[0108] For welding of the weld seam, after the position of the iron accessory is positioned, the X-axis positioning electric cylinder 30, the Y-axis positioning electric cylinder 32 and the Z-axis positioning electric cylinder 33 are started to make the DC welding gun head 2 contact the position of the weld seam on the iron accessory, and the DC welding gun head 2 is moved along the position of the weld seam. During the movement of the DC welding gun head 2, the electric welding machine body 1 is started to make the DC welding gun head 2 weld the weld seam.

[0109] Weld cleaning: Before welding the weld, the weld cleaning and grinding head 16 in the weld cleaning mechanism 002 at the front end of the weld head is preferentially brought into contact with the weld to be welded through the weld head positioning mechanism 001, and the weld cleaning power motor 17 is started to rotate the weld cleaning and grinding head 16. When the weld cleaning and grinding head 16 rotates, the weld to be welded can be polished and cleaned as the weld head positioning mechanism 001 drives the weld cleaning and grinding head 16 to move along the weld.

[0110] The grinding head is adjusted. While the welding head adjustment mechanism 001 drives the seam cleaning and grinding head 16 to move, the welding head adjustment mechanism 001 can drive the DC welding gun head 2 to perform synchronous welding operations on the cleaned weld. When the position of the weld is bent, the seam cleaning and grinding head 16 in the seam cleaning mechanism 002 at the front end of the welding head reaches the bending position of the weld, and the adjustment power motor 8 can be started synchronously to make the seam cleaning power adjustment ring 6 drive the seam cleaning and grinding head 16 to rotate and adjust, so that the seam cleaning and grinding head 16 is always in the weld position. Similarly, after the DC welding gun head 2 completes welding the weld, the seam cleaning and grinding head 16 located in the seam cleaning mechanism 003 at the rear end of the welding head can grind the weld after welding.

[0111] Impurity removal, as the seam cleaning and grinding heads 16 in the seam cleaning mechanism 002 at the front end of the welding head and the seam cleaning mechanism 003 at the rear end of the welding head perform pre-welding and post-welding cleaning on the weld, as the output end of the seam cleaning power motor 17 rotates, the air intake blades 28 can be rotated. When the air intake blades 28 rotate, the external gas will enter the impurity removal elbow 22 through the air intake pipe 24. When the gas flow rate in the impurity removal elbow 22 increases, the air pressure in the impurity removal elbow 22 decreases, and the gas in the impurity suction hood 20 will enter the impurity removal elbow 22 along the impurity suction elbow 23. At the same time as the gas in the impurity suction hood 20 enters the impurity removal elbow 22, the impurities polished off by the seam cleaning and grinding heads 16 will simultaneously enter the impurity removal elbow 22 under the action of suction. By filtering the gas discharged from the impurity removal elbow 22, the impurities generated by the seam cleaning and grinding heads 16 can be centrally processed.

[0112] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A DC welding machine for producing iron accessories, comprising a welding machine body (1) and a DC welding gun head (2), characterized in that: Also includes: Welding bracket (3); A welding head positioning mechanism (001), wherein the welding head positioning mechanism (001) is arranged on the welding bracket (3); A welding position adjustment frame (4), wherein the welding position adjustment frame (4) is arranged on the welding head position adjustment mechanism (001), and the electric welding machine body (1) is mounted on the welding position adjustment frame (4); A welding head mounting tube (5), the welding head mounting tube (5) being connected to the welding position adjustment frame (4), the DC welding gun head (2) being detachably mounted in the welding head mounting tube (5), and the DC welding gun head (2) being connected to the electric welding machine body (1); A welding head front end seam cleaning mechanism (002), the welding head front end seam cleaning mechanism (002) being mounted on the welding position adjustment frame (4) and being used for cleaning the weld of the iron accessory; A welding head rear end seam cleaning mechanism (003), wherein the welding head rear end seam cleaning mechanism (003) is mounted on the welding position adjustment frame (4), and the welding head front end seam cleaning mechanism (002) is located inside the welding head rear end seam cleaning mechanism (003) and is used to clean the weld of the iron accessory; The welding head front end seam cleaning mechanism (002) and the welding head rear end seam cleaning mechanism (003) have the same structure, and both the welding head front end seam cleaning mechanism (002) and the welding head rear end seam cleaning mechanism (003) comprise: A seam cleaning power positioning ring (6), wherein the seam cleaning power positioning ring (6) is rotatably arranged on the welding positioning frame (4); A seam cleaning position adjustment component, the seam cleaning position adjustment component is arranged on the welding position adjustment frame (4), and the seam cleaning position adjustment component is connected to the seam cleaning power position adjustment ring (6) and is used to drive the seam cleaning power position adjustment ring (6) to rotate; A seam cleaning power component with miscellaneous functions, the seam cleaning power component being arranged on the seam cleaning power positioning ring (6); The seam cleaning and positioning assembly comprises: An adjusting inner gear ring (7), wherein the adjusting inner gear ring (7) is arranged on the seam cleaning power adjusting ring (6); A positioning power motor (8), wherein the positioning power motor (8) is mounted on the welding positioning frame (4); A positioning gear (9), the positioning gear (9) being arranged on the output end of the positioning power motor (8), the positioning gear (9) being meshed with the positioning internal gear ring (7); The seam cleaning power assembly comprises: A seam cleaning power box (10), wherein the seam cleaning power box (10) is arranged on the seam cleaning power positioning ring (6); A seam cleaning power frame (11), wherein the seam cleaning power frame (11) is arranged on the seam cleaning power box (10); A seam cleaning and position adjusting electric cylinder (12), wherein the seam cleaning and position adjusting electric cylinder (12) is installed in the seam cleaning power box (10); A seam cleaning pressure sensor (13), wherein the seam cleaning pressure sensor (13) is arranged on an output end of the seam cleaning position adjustment electric cylinder (12); A seam cleaning power rotating rod (14), one end of which is rotatably disposed on the detection end of the seam cleaning pressure sensor (13), and the other end of which passes through the seam cleaning power rotating rod (14); A three-jaw chuck (15), wherein the three-jaw chuck (15) is arranged on the seam cleaning power rotating rod (14); a seam cleaning and grinding head (16), the seam cleaning and grinding head (16) being detachably arranged in the three-jaw chuck (15); A seam cleaning power motor (17), wherein the seam cleaning power motor (17) is installed in the seam cleaning power box (10); A long seam cleaning gear (18), the long seam cleaning gear (18) being arranged on the output end of the seam cleaning power motor (17); a seam cleaning short gear (19), the seam cleaning short gear (19) being arranged on the seam cleaning power rotating rod (14), the seam cleaning short gear (19) being meshed with the seam cleaning long gear (18); a debris suction hood (20), the debris suction hood (20) being arranged on the seam cleaning power frame (11) via a debris suction limit spring (21), the seam cleaning power rotating rod (14) penetrating the debris suction hood (20), and the seam cleaning grinding head (16) being located inside the debris suction hood (20); A debris removal bent pipe (22), the debris removal bent pipe (22) being arranged on the seam cleaning power frame (11); a debris suction bend pipe (23), one end of the debris suction bend pipe (23) being connected to the debris suction cover (20), and the other end of the debris suction bend pipe (23) being sealed and slidably sleeved in the debris removal bend pipe (22); an air intake pipe (24), the air intake pipe (24) being connected to the impurity removal elbow (22); An air intake power rotating rod (25), the air intake power rotating rod (25) being rotatably disposed on the seam cleaning power box (10) via a positioning rotating seat, and one end of the air intake power rotating rod (25) penetrating into the air intake pipe (24); Bevel gear one (26), the bevel gear one (26) being arranged on the output end of the seam cleaning power motor (17); Bevel gear 2 (27), the bevel gear 2 (27) being arranged on the intake power rotating rod (25), the bevel gear 1 (26) being meshed with the bevel gear 2 (27); An air intake fan blade (28), wherein the air intake fan blade (28) is arranged on the air intake power rotating rod (25), and the air intake fan blade (28) is located in the air intake pipe (24).

2. A DC welding machine for iron accessories production according to claim 1, characterized in that: The welding head positioning mechanism (001) comprises: An X-axis positioning component, the X-axis positioning component being arranged on the welding bracket (3); A Y-axis positioning component, wherein the Y-axis positioning component is arranged on the X-axis positioning component; A Z-axis positioning component, wherein the Z-axis positioning component is arranged on the Y-axis positioning component, and the welding positioning frame (4) is arranged on the Z-axis positioning component.

3. A DC welding machine for iron accessories production according to claim 2, characterized in that: The X-axis positioning assembly comprises: An X-axis positioning slide (29), the X-axis positioning slide (29) being slidably disposed on the welding bracket (3); An X-axis positioning electric cylinder (30) is installed on one side of the welding bracket (3), and an output end of the X-axis positioning electric cylinder (30) is connected to one end of the X-axis positioning slide (29).

4. A DC welding machine for iron accessories production according to claim 3, characterized in that: The Y-axis positioning component comprises: A Y-axis positioning slide (31), wherein the Y-axis positioning slide (31) is slidably disposed on the X-axis positioning slide (29); A Y-axis positioning electric cylinder (32), wherein the Y-axis positioning electric cylinder (32) is mounted on the X-axis positioning slide (29), and an output end of the Y-axis positioning electric cylinder (32) is connected to the Y-axis positioning slide (31).

5. A DC welding machine for iron accessories production according to claim 4, characterized in that: The Z-axis positioning assembly comprises: A Z-axis positioning electric cylinder (33), wherein the Z-axis positioning electric cylinder (33) is mounted on the Y-axis positioning slide plate (31); A positioning pressure sensor (34), wherein the positioning pressure sensor (34) is mounted on the output end of the Z-axis positioning electric cylinder (33), and the welding positioning frame (4) is mounted on the detection end of the positioning pressure sensor (34).

6. A DC welding machine for iron accessories production according to claim 5, characterized in that: The welding bracket (3) is also provided with a weldment positioning assembly, and the weldment positioning assembly is provided with two groups, and the two groups of weldment positioning assemblies are symmetrically arranged; The weldment positioning assembly comprises: A weldment positioning plate (35), wherein the weldment positioning plate (35) is arranged on the welding bracket (3); A weldment positioning electric cylinder (36), wherein the weldment positioning electric cylinder (36) is mounted on one side of the weldment positioning plate (35); A weldment positioning frame (37), wherein the weldment positioning frame (37) is arranged on the output end of the weldment positioning electric cylinder (36); A weldment positioning motor (38), wherein the weldment positioning motor (38) is mounted on the weldment positioning frame (37); A weldment mechanical clamp (39), wherein the weldment mechanical clamp (39) is mounted on an output end of the weldment positioning motor (38).

7. A welding process for producing iron accessories, using a DC welding machine for producing iron accessories as claimed in claim 6, characterized in that: The following steps are involved: S1, positioning the iron accessories. When welding the iron accessories, two iron accessories to be welded are clamped on two weldment mechanical clamps (39) respectively, and the positions of the iron accessories are moved by starting the weldment positioning motor (38) and the weldment positioning electric cylinder (36), so that the welding positions of the two iron accessories are in contact with each other and a weld is formed; S2, welding the weld seam. After the position of the iron accessory is positioned, the X-axis positioning electric cylinder (30), the Y-axis positioning electric cylinder (32) and the Z-axis positioning electric cylinder (33) are started to make the DC welding gun head (2) contact the position of the weld seam on the iron accessory, and the DC welding gun head (2) is moved along the position of the weld seam. During the movement of the DC welding gun head (2), the electric welding machine body (1) is started to make the DC welding gun head (2) weld the weld seam; S3, welding seam cleaning, before welding the welding seam, the welding head positioning mechanism (001) is used to preferentially bring the welding seam cleaning and grinding head (16) in the welding head front end welding seam cleaning mechanism (002) into contact with the welding seam to be welded, and the welding seam cleaning and grinding head (16) is rotated by starting the welding seam cleaning power motor (17). When the welding seam cleaning and grinding head (16) rotates, the welding head positioning mechanism (001) drives the welding seam cleaning and grinding head (16) to move along the welding seam, so that the welding seam to be welded can be polished and cleaned; S4, grinding head adjustment. When the welding head adjustment mechanism (001) drives the seam cleaning grinding head (16) to move, the welding head adjustment mechanism (001) can drive the DC welding gun head (2) to synchronously weld the cleaned weld. When the weld is bent, the seam cleaning grinding head (16) in the seam cleaning mechanism (002) at the front end of the welding head reaches the bent position of the weld, and the adjustment power motor (8) can be started synchronously, so that the seam cleaning power adjustment ring (6) drives the seam cleaning grinding head (16) to rotate and adjust the position, so that the seam cleaning grinding head (16) is always in the weld position. Similarly, after the DC welding gun head (2) completes welding the weld, the seam cleaning grinding head (16) in the seam cleaning mechanism (003) at the rear end of the welding head can grind the weld. S5, impurity removal. As the seam cleaning mechanism (002) at the front end of the welding head and the seam cleaning grinding head (16) in the seam cleaning mechanism (003) at the rear end of the welding head clean the weld before welding and after welding, the output end of the seam cleaning power motor (17) rotates, so that the air intake fan blade (28) rotates. When the air intake fan blade (28) rotates, external gas enters the impurity removal elbow (22) through the air intake pipe (24). When the gas flow rate in the impurity removal elbow (22) increases, the impurity removal The air pressure in the impurity bend pipe (22) is reduced, and the gas in the impurity suction hood (20) enters the impurity removal bend pipe (22) along the impurity suction bend pipe (23). When the gas in the impurity suction hood (20) enters the impurity removal bend pipe (22), the impurities polished off by the seam cleaning and grinding head (16) will simultaneously enter the impurity removal bend pipe (22) under the action of suction. By filtering the gas discharged from the impurity removal bend pipe (22), the impurities generated by the seam cleaning and grinding head (16) can be centrally processed.

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