A high manganese steel automatic and semi-automatic arc welding process

Abstract

The present invention belongs to the field of welding technology and discloses an automatic and semi-automatic arc welding process for high manganese steel, comprising a welding gun, wherein one end of the welding gun is provided with an adjustment structure; the adjustment structure comprises a first movable block, a protective tube, a mounting ring, a cooling structure, and a limiting structure; a first movable block is provided on the outside of one end of the welding gun, a protective tube is fixedly mounted on one side of the first movable block, a mounting ring is fixedly mounted on the outside of one end of the protective tube, and the protective tube is located on the outside of one end of the welding gun. By transporting cold air from the storage chamber to the inside of the connecting block through a connecting pipe, the nozzle cools the outside of the gas nozzle to prevent the gas nozzle from being in a high temperature environment for a long time and deforming due to thermal expansion; at the same time, the limiting block limits the connection between the gas nozzle and the gun handle to improve the stability of the connection and prevent the gas nozzle from being loosely installed and becoming loose or shifted under the impact of airflow during cooling, so that the cold air cannot accurately cool the gas nozzle, making it difficult to improve the cooling effect.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, and in particular relates to an automatic or semi-automatic arc welding process for high manganese steel. Background Art

[0002] Welding high-manganese steel requires the use of a semi-automatic arc welding device. Semi-automatic arc welding involves a process where the welding process is partially automated by mechanical and electrical means and partially manually operated. The semi-automatic welding machine's wire feeder automatically feeds the wire into the arc zone as it melts, while the arc is moved along the joint using a handheld torch. The wire feeder manually controls the wire into the weld zone, where shielding gas protects the weld. Welding speed, torch angle, and position primarily rely on the operator's skill and experience to ensure weld quality.

[0003] In the existing technology, the welding direction, speed and angle of the welding are controlled manually by holding the welding gun to move the arc on the high manganese steel workpiece to realize the welding process. The welding gun nozzle will generate high temperature after use. If the nozzle is in a high temperature environment for a long time, its own metal material may be deformed due to thermal expansion, thereby changing the shape and size of the nozzle, affecting key parameters such as the angle and flow rate of the gas ejection, and affecting the quality of subsequent welding. Summary of the Invention

[0004] The present invention aims to solve the problems in the prior art and proposes the following technical solutions:

[0005] A high manganese steel automatic and semi-automatic arc welding device includes a welding gun, and an adjustment structure is provided at one end of the welding gun; the adjustment structure includes a first movable block, a protective tube, a mounting ring, a cooling structure, and a limiting structure. The first movable block is provided on the outside of one end of the welding gun, a protective tube is fixedly installed on one side of the first movable block, and a mounting ring is fixedly installed on the outside of one end of the protective tube. The protective tube is located on the outside of one end of the welding gun, and cooling structures are provided in both the first movable block and the protective tube. A limiting structure is provided on one side of the cooling structure and inside the protective tube.

[0006] As a preferred embodiment of the above technical solution, the welding gun includes a gas nozzle, a gun handle is provided at one end of the gas nozzle, a connecting line is provided on one side of the gun handle, slide grooves are provided on both sides of the gun handle, sliders are fixedly installed on the inner walls of both sides of the first movable block, the sliders are slidably connected to the slide grooves, the first movable block is located at one end of the gun handle, the protective tube is located outside the gas nozzle, and the limiting structure is symmetrically arranged with the center of the protective tube.

[0007] As a preferred embodiment of the above technical solution, the cooling structure includes a storage chamber, a connecting pipe, a connecting block, a control valve, and a nozzle. A storage chamber is opened inside the first movable block, and cold air is arranged inside the storage chamber. A connecting pipe is fixedly installed on one side of the first movable block, a control valve is provided at one end of the connecting pipe, and a connecting block is fixedly installed on the other end. One side of the connecting block is fixedly installed to the inner wall of the protective pipe, and a plurality of nozzles distributed in an array are fixedly installed on one side of the connecting block.

[0008] As a preferred embodiment of the above technical solution, the storage chamber is connected to the interior of the connecting block through a connecting pipe. The connecting pipe, connecting block and nozzle are located on both sides of the air nozzle and are symmetrically arranged with respect to the center of the protective tube. A button is provided on the side of the first movable block away from the protective tube, and a connecting port is provided on one side of the button and on the side of the first movable block.

[0009] As a preferred embodiment of the above technical solution, the limiting structure includes a motor, a rotating rod, an electric telescopic rod, and a limiting block. The output end of the motor is transmission-connected with the rotating rod, the electric telescopic rod is fixedly installed in the middle of the rotating rod, and the limiting block is fixedly installed at the bottom end of the electric telescopic rod. An arc-shaped groove is opened at one end of the limiting block, and the inner wall of the arc-shaped groove fits with the outer side of one end of the air nozzle.

[0010] As a preferred embodiment of the above technical solution, mounting grooves are provided on both sides of the mounting ring, the motor is fixedly installed on the inner wall of the mounting groove, one end of the rotating rod passes through the upper and lower ends of the protective tube and is rotatably connected to the inner wall of the mounting groove, the electric telescopic rod and the limiting block are located on one side of the connecting block, and the limiting block is located at the connection between the air nozzle and the gun handle.

[0011] As a preferred embodiment of the above technical solution, a fixed structure is provided on the side of the gun handle away from the first movable block;

[0012] The fixed structure includes a moving block, a connecting spring, a rotating plate, a pushing block, a moving rod, a circular convex, a second movable block, a compression spring, and a fixed block. The upper and lower sides of the moving block are slidably connected to the inner wall of the slide groove, one side of the moving block is fixedly installed with a connecting spring, one end of the connecting spring is fixedly installed with the inner wall of the slide groove, the upper and lower ends of the moving block are hinged with a rotating plate, one end of the rotating plate is hinged with a pushing block, one side of the pushing block is fixedly installed with a moving rod, the bottom of the moving rod is fixedly installed with a circular convex, the bottom of the circular convex is provided with a second movable block, one side of the second movable block is fixedly installed with a fixed block, and the side of the fixed block close to the second movable block is fixedly installed with a compression spring.

[0013] As a preferred embodiment of the above technical solution, a movable groove is provided at one end of the gun handle and on both sides of the upper and lower sides of the slide groove, a movable opening is provided on one side of the movable groove and on one side of the gun handle, the rotating plate is arranged horizontally on both sides of the movable block, one side of the pushing block is slidably connected to the inner wall of the movable groove, the second movable block and one side of the fixed block are slidably connected to the inner wall of the movable groove, one end of the compression spring is fixedly installed to the inner wall of the movable groove, the second movable block is close to the compression spring on a sloped surface, the round convex surface is located at the top of the sloped surface, and the fixed block is arranged corresponding to the movable opening.

[0014] As a preferred embodiment of the above technical solution, an insert rod is fixedly installed on one side of the movable block and in the middle of the connecting spring. A slot is provided in the slide groove near the side of the connecting spring, and the insert rod is plugged into the slot. A limiting groove is provided on the inner wall of the second movable block near the side of the slider, and the fixed block is slidably connected to the limiting groove.

[0015] The present invention also provides a welding process using the above-mentioned high manganese steel automatic and semi-automatic arc welding device, comprising the following steps:

[0016] Step 1: Select suitable high-manganese steel welding materials, ensure that they meet the welding requirements, clean and derust the welding materials, then move the first movable block on the gun handle to drive the slider to move along the slide groove away from the gas nozzle, so that the protective tube moves to the gun handle and the gas nozzle is exposed. When the slider moves to the movable groove and pushes the movable block and the insertion rod to move, the connecting spring is compressed, and at the same time, the rotating plate is deflected to move the pushing block along the inner wall of the movable groove, so that the moving rod drives the circular convex to move downward along the inclined surface of the second movable block, stretching the compression spring to push the fixed block to move. When the insertion rod is inserted into the slot, the fixed block moves through the movable opening to the inside of the limiting groove on the inner walls on both sides of the second movable block, limiting the second movable block, thereby protecting the part where the gun handle is connected to the connecting line;

[0017] Step 2: Restart the wire feeding mechanism of the semi-automatic welding machine to automatically feed the welding wire into the arc zone. The welding direction, speed and angle are controlled manually by holding the welding gun to move the arc on the high manganese steel workpiece and weld the high manganese steel. When welding is completed, push the first movable block to drive the slider to move along the slide groove. The first movable block drives the protective tube to move toward the gas nozzle, so that the fixed block moves along the limited groove. The slider no longer squeezes the movable block. Through the action of the connecting spring, the insertion rod is moved away from the slot and the movable block moves to its original position along the inner wall of the slide groove. At the same time, the rotating plate deflects and drives the pushing block to move along the movable groove to its original position, so that the movable rod drives the circular protrusion to move along the inclined surface of the second movable block, no longer squeezing the second movable block, and the compression spring is contracted to drive the fixed block to move. When the fixed block moves from the movable opening to the inside of the movable groove, the first movable block is no longer restricted, so that the first movable block can drive the slider and the protective tube to move on the gun handle, and move the protective tube to the outside of the gas nozzle. Then, through the control button, the control valve transports the cold air inside the storage chamber through the connecting pipe to the inside of the connecting block, and sprays it onto the gas nozzle through the nozzle to cool the gas nozzle.

[0018] Step 3: When the protective tube is located outside the gas nozzle, first control the motor to rotate by using the button on the side of the first movable block, so that the motor drives the electric telescopic rod and the limiting block to rotate, and rotate the electric telescopic rod and the limiting block to the connection between the gas nozzle and the gun handle, so that the upper and lower sides are limited, thereby improving the stability of the connection between the gas nozzle and the gun handle, and preventing the gas nozzle from being loosened or shifted due to the impact of airflow, so that the cold air cannot accurately cool the gas nozzle;

[0019] Step 4: After the cooling is completed, the electric telescopic rod is driven by the control button to drive the limiting block away from the gas nozzle and move it above the gas nozzle, and the motor is started to drive the rotating rod to rotate, so that the electric telescopic rod drives the limiting block to rotate to a horizontal state and fit the inner wall of the protective tube, and then the first movable block is moved to drive the protective tube to move away from the gas nozzle along the gun handle, so that the protective tube moves to the gun handle and the gas nozzle is exposed. The cooled gas nozzle can be used for welding again.

[0020] The beneficial effects of the present invention are:

[0021] (1) The present invention transports the cold air in the storage chamber to the inside of the connection block through the connecting pipe, and the nozzle cools the outside of the gas nozzle to prevent the gas nozzle from being in a high temperature environment for a long time, causing thermal expansion and deformation, which affects the quality of welding. At the same time, the connection between the gas nozzle and the gun handle is limited by the limiting block, thereby improving the stability of the connection and preventing the gas nozzle from being loosened or shifted under the impact of the air flow during cooling, so that the cold air cannot accurately cool the gas nozzle, which is not conducive to improving the cooling effect.

[0022] (2) The present invention drives the movement of the slider by the first movable block, so that the movable block moves to push the rotating plate to deflect, so that the pushing block with the moving rod and the circular convex moves, and the second movable block drives the fixed block to limit the first movable block. While the first movable block drives the protective tube to expose the air nozzle after the cold air, it can also protect the connection between the gun handle and the connecting line to prevent the connection from being damaged due to long-term use, resulting in poor contact and affecting the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 What is shown is a schematic diagram of the overall structure of the embodiment;

[0024] Figure 2 Shown is a front view of an embodiment of the protection tube;

[0025] Figure 3 Shown is a cross-sectional view of the overall structure of the embodiment;

[0026] Figure 4 Shown is a structural diagram of the first movable block, the protective tube and the mounting ring of each embodiment;

[0027] Figure 5Shown is a structural diagram of the cooling structure and the limiting structure of the embodiment;

[0028] Figure 6 Shown is a diagram of the internal structure of the protective tube of the embodiment;

[0029] Figure 7 What is shown is the structural diagram of the gun handle of an embodiment;

[0030] Figure 8 Shown is a structural diagram of the movable slot and the movable opening of the embodiment;

[0031] Figure 9 Shown is a structural diagram of a fixing structure of an embodiment.

[0032] In the figure: 1. welding gun; 2. first movable block; 3. protective tube; 4. mounting ring; 5. gas nozzle; 6. gun handle; 7. connecting line; 8. slide block; 9. storage chamber; 10. connecting pipe; 11. connecting block; 12. control valve; 13. nozzle; 14. button; 15. connecting port; 16. motor; 17. rotating rod; 18. electric telescopic rod; 19. limiting block; 20. moving block; 21. connecting spring; 22. rotating plate; 23. pushing block; 24. moving rod; 25. round convex; 26. second movable block; 27. fixed block; 28. movable port; 29. ​​insertion rod; 30. limiting groove. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0034] The present invention provides a high manganese steel automatic and semi-automatic arc welding device, such as Figures 1 to 4 As shown, it includes a welding gun 1, and an adjustment structure is provided at one end of the welding gun 1;

[0035] The adjustment structure includes a first movable block 2, a protective tube 3, a mounting ring 4, a cooling structure, and a limiting structure. The first movable block 2 is provided on the outside of one end of the welding gun 1, and a protective tube 3 is fixedly installed on one side of the first movable block 2. A mounting ring 4 is fixedly installed on the outside of one end of the protective tube 3. The protective tube 3 is located on the outside of one end of the welding gun 1. Cooling structures are provided in the first movable block 2 and the protective tube 3. A limiting structure is provided on one side of the cooling structure and inside the protective tube 3. The welding gun 1 includes a gas nozzle 5, a gun handle 6 is provided at one end of the gas nozzle 5, a connecting line 7 is provided on one side of the gun handle 6, and slide grooves are provided on both sides of the gun handle 6. Slide blocks 8 are fixedly installed on the inner walls of both sides of the first movable block 2, and the slide blocks 8 are slidably connected to the slide grooves. The first movable block 2 is located at one end of the gun handle 6, and the protective tube 3 is located on the outside of the gas nozzle 5. The limiting structure is symmetrically arranged with the center of the protective tube 3.

[0036] The protective tube 3 can protect the gas nozzle 5 when not in use to prevent the gas nozzle 5 from being damaged by collision and affecting its use. The cooling device inside the protective tube 3 can cool the outer side of the gas nozzle 5 after use to prevent the gas nozzle 5 from being in a high temperature environment for a long time and deforming due to thermal expansion, which affects the quality of welding. The limiting structure inside the protective tube 3 limits the connection between the gas nozzle 5 and the gun handle 6 to improve the stability of the connection and prevent the gas nozzle 5 from being installed loosely and shifting due to the impact of airflow during cooling, so that the cold air cannot accurately cool the gas nozzle 5 and it is not convenient to improve the cooling effect. Then the first movable block 2 is moved to drive the protective tube 3 to move toward the gun handle 6, so that the cooled gas nozzle 5 is exposed, which is convenient for continuing to use the welding gun 1 for welding and improving the welding effect.

[0037] like Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 As shown, the cooling structure includes a storage cavity 9, a connecting pipe 10, a connecting block 11, a control valve 12, and a nozzle 13. A storage cavity 9 is opened inside the first movable block 2, and cold air is provided inside the storage cavity 9. A connecting pipe 10 is fixedly installed on one side of the first movable block 2, a control valve 12 is provided at one end of the connecting pipe 10, and a connecting block 11 is fixedly installed on the other end thereof. One side of the connecting block 11 is fixedly installed to the inner wall of the protective tube 3, and a plurality of nozzles 13 distributed in an array are fixedly installed on one side of the connecting block 11.

[0038] The cold air in the storage chamber 9 is transported to the inside of the connecting block 11 through the control valve 12 via the connecting pipe 10, and then sprayed to both sides of the gas nozzle 5 by the nozzle 13 to cool the outside of the gas nozzle 5. The cooling effect of the gas nozzle 5 is improved by the multiple array-distributed nozzles 13, preventing the gas nozzle 5 from being in a high-temperature environment for a long time, causing thermal expansion and deformation, thereby changing the shape and size of the gas nozzle 5, affecting key parameters such as the angle and flow rate of gas ejection, and affecting the quality of subsequent welding.

[0039] like Figures 2 to 4 As shown, the storage chamber 9 is connected to the inside of the connecting block 11 through the connecting pipe 10. The connecting pipe 10, the connecting block 11 and the nozzle 13 are located on both sides of the gas nozzle 5, and are symmetrically arranged with the center of the protective tube 3. A button 14 is provided on the side of the first movable block 2 away from the protective tube 3, and a connecting port 15 is provided on one side of the button 14 and on the side of the first movable block 2.

[0040] The connecting port 15 facilitates the delivery of cold air to the interior of the storage chamber 9, and the button 14 facilitates the control of the control valve 12, so that the cold air inside the storage chamber 9 can be delivered from the connecting pipe 10 to the interior of the connecting block 11. Through the symmetrically arranged connecting pipe 10, connecting block 11 and nozzle 13, the air nozzle 5 can be cooled on both sides, thereby increasing the service life of the air nozzle 5.

[0041] like Figures 5 and 6 As shown, the limiting structure includes a motor 16, a rotating rod 17, an electric telescopic rod 18, and a limiting block 19. The output end of the motor 16 is transmission-connected to the rotating rod 17. The electric telescopic rod 18 is fixedly installed in the middle of the rotating rod 17. The limiting block 19 is fixedly installed at the bottom end of the electric telescopic rod 18. An arc-shaped groove is provided at one end of the limiting block 19, and the inner wall of the arc-shaped groove fits with the outer side of one end of the air nozzle 5.

[0042] When the air nozzle 5 is located inside the protective tube 3, the electric telescopic rod 18 and the limiting block 19 are located at the inner wall of the protective tube 3 and are parallel to it. When the air nozzle 5 needs to be cooled, the button 14 is used to rotate the motor 16 with the rotating rod 17, so that the electric telescopic rod 18 drives the limiting block 19 to rotate to a vertical state. The limiting block 19 is located on the upper and lower sides of the connection between the air nozzle 5 and the gun handle 6. The electric telescopic rod 18 then drives the limiting block 19 to extend, so that the inner wall of one side of the arc groove of the limiting block 19 fits, so that the limiting block 19 is limited at the connection between the air nozzle 5 and the gun handle 6, thereby improving the stability of the connection and preventing loosening under the impact of airflow during cooling, so that the cold air cannot accurately cool the air nozzle 5, which is not conducive to improving the cooling effect.

[0043] like Figures 5 and 6 As shown, mounting grooves are provided on both sides of the mounting ring 4, the motor 16 is fixedly installed on the inner wall of the mounting groove, one end of the rotating rod 17 passes through the upper and lower ends of the protective tube 3 and is rotatably connected to the inner wall of the mounting groove, the electric telescopic rod 18 and the limiting block 19 are located on one side of the connecting block 11, and the limiting block 19 is located at the connection between the gas nozzle 5 and the gun handle 6.

[0044] The mounting groove facilitates the installation of the motor 16, so that the motor 16 drives the rotating rod 17 to rotate along the inner wall of the mounting groove, and the electric telescopic rod 18 drives the limiting block 19 to rotate. After the gas nozzle 5 has cooled, the electric telescopic rod 18 and the limiting block 19 are rotated to the inner wall of the protective tube 3, parallel to it, to prevent the limiting block 19 from blocking the movement of the protective tube 3 when the first movable block 2 drives the protective tube 3 to move, so that the cooled gas nozzle 5 cannot be exposed, affecting the next welding.

[0045] like Figures 7 to 9 As shown, a fixed structure is provided on the side of the gun handle 6 away from the first movable block 2;

[0046] The fixed structure includes a moving block 20, a connecting spring 21, a rotating plate 22, a pushing block 23, a moving rod 24, a circular protrusion 25, a second movable block 26, a compression spring, and a fixed block 27. The upper and lower sides of the moving block 20 are both slidably connected to the inner wall of the slide groove. A connecting spring 21 is fixedly installed on one side of the moving block 20, and one end of the connecting spring 21 is fixedly installed on the inner wall of the slide groove. The upper and lower ends of the moving block 20 are hinged with a rotating plate 22, and one end of the rotating plate 22 is hinged with a pushing block 23. A moving rod 24 is fixedly installed on one side of the pushing block 23, and a circular protrusion 25 is fixedly installed on the bottom of the moving rod 24. A second movable block 26 is provided at the bottom of the circular protrusion 25. A fixed block 27 is fixedly installed on one side of the second movable block 26, and a compression spring is fixedly installed on the side of the fixed block 27 close to the second movable block 26.

[0047] When the gas nozzle 5 has cooled down, the protective tube 3 is driven to move toward the gun handle 6 by the first movable block 2. The first movable block 2 drives the slider 8 to move along the slide groove. When the protective tube 3 moves to the gun handle 6 to expose the gas nozzle 5, the slider 8 moves to the movable groove and pushes the movable block 20. The movable block 20 moves along the slide groove to compress the connecting spring 21 and deflect the rotating plate 22 to push the pushing block 23 to move, so that the moving rod 24 drives the convex 25 to squeeze the second movable block 26, so that the second movable block 26 drives the fixed block 27 to move. The compression spring is stretched, and the fixed block 27 moves to both sides of the gun handle 6, limiting the first movable block 2 and the position of the protective tube 3 to prevent the protective tube 3 from moving during welding, affecting the welding effect, and being able to limit the position of the first movable block 2, protecting the connection between the gun handle 6 and the connecting line 7, preventing the connection from being damaged after long-term use, resulting in poor contact and affecting the welding effect.

[0048] like Figures 7 to 9 As shown, a movable groove is provided at one end of the gun handle 6 and is located on the upper and lower sides of the slide groove. A movable opening 28 is provided on one side of the movable groove and on one side of the gun handle 6. The rotating plate 22 is horizontally arranged on both sides of the movable block 20. One side of the pushing block 23 is slidably connected to the inner wall of the movable groove. The second movable block 26 and the fixed block 27 are slidably connected to the inner wall of the movable groove. One end of the compression spring is fixedly installed with the inner wall of the movable groove. The second movable block 26 is close to the compression spring and has an inclined surface. The round protrusion 25 is located at the top of the inclined surface. The fixed block 27 is corresponding to the movable opening 28. A rod 29 is fixedly installed on one side of the movable block 20 and is located in the middle of the connecting spring 21. A slot is provided on the side of the slide groove close to the connecting spring 21. The rod 29 is plugged into the slot. A limiting groove 30 is provided on the inner wall of the second movable block 26 close to the slider 8, and the fixed block 27 is slidably connected to the limiting groove 30.

[0049] When the slider 8 pushes the moving block 20 to move, the connecting spring 21 is compressed, and the insertion rod 29 is plugged into the slot to limit the position of the moving block 20. When the moving block 20 moves and drives the rotating plate 22 to deflect, the pushing block 23 moves along the moving groove, and drives the moving rod 24 and the round protrusion 25 to move. The round protrusion 25 moves along the inclined surface of the second movable block 26 and squeezes the second movable block 26. The compression spring stretches and moves the fixed block 27 from the movable mouth 28 to the limiting groove 30 on the inner walls on both sides of the first movable block 2, thereby limiting the first movable block 2 and further improving the protective effect of the first movable block 2 on the connection between the gun handle 6 and the connecting line 7, thereby preventing the connection from breaking and affecting the use of the welding gun 1.

[0050] The present invention also provides a welding process using the above-mentioned high manganese steel automatic and semi-automatic arc welding device, comprising the following steps:

[0051] Step 1: Select suitable high manganese steel welding materials, ensure that they meet the welding requirements, clean and derust the welding materials, then move the first movable block 2 on the gun handle 6 to drive the slider 8 to move along the slide groove away from the gas nozzle 5, so that the protective tube 3 moves to the gun handle 6 and the gas nozzle 5 is exposed, when the slider 8 moves to the movable groove and pushes the movable block 20 and the insertion rod 29 to move, so that the connecting spring 21 is compressed, and at the same time, the rotating plate 22 is deflected to move the pushing block 23 along the inner wall of the movable groove, so that the moving rod 24 drives the circular protrusion 25 to move downward along the inclined surface of the second movable block 26, stretching the compression spring to push the fixed block 27 to move, and when the insertion rod 29 is inserted into the slot, the fixed block 27 moves through the movable opening 28 to the inside of the limiting groove 30 on the inner walls on both sides of the second movable block 26, thereby limiting the second movable block 26, thereby protecting the part where the gun handle 6 is connected to the connecting line 7;

[0052] Step 2: Restart the wire feeding mechanism of the semi-automatic welding machine to automatically feed the welding wire into the arc zone. Manually hold the welding gun 1 to control the direction, speed and angle of welding, so that the arc moves on the high manganese steel workpiece and welds the high manganese steel. When welding is completed, push the first movable block 2 to drive the slider 8 to move along the slide groove. The first movable block 2 drives the protective tube 3 to move toward the direction of the gas nozzle 5, so that the fixed block 27 moves along the limited groove 30. The slider 8 no longer squeezes the moving block 20. Through the action of the connecting spring 21, the rod 29 is moved away from the slot and the moving block 20 is moved to its original position along the inner wall of the slide groove. At the same time, the rotating plate 22 deflects and drives the pushing block 23 along As the movable groove moves to its original position, the movable rod 24 drives the circular protrusion 25 to move along the inclined surface of the second movable block 26, no longer squeezing the second movable block 26, causing the compression spring to contract and drive the fixed block 27 to move. When the fixed block 27 moves from the movable opening 28 into the movable groove, it no longer restricts the first movable block 2, allowing the first movable block 2 to drive the slider 8 and the protective tube 3 to move on the gun handle 6, moving the protective tube 3 to the outside of the gas nozzle 5. Then, the control button 14 is used to control the control valve 12 to transport the cold air inside the storage chamber 9 through the connecting pipe 10 to the inside of the connecting block 11, and spray it onto the gas nozzle 5 through the nozzle 13, thereby cooling the gas nozzle 5.

[0053] Step 3: When the protective tube 3 is located outside the gas nozzle 5, the button 14 on the side of the first movable block 2 is used to control the rotation of the motor 16, so that the motor 16 drives the electric telescopic rod 18 and the limiting block 19 to rotate, and the electric telescopic rod 18 and the limiting block 19 are rotated to the connection between the gas nozzle 5 and the gun handle 6, so that the upper and lower sides are limited, thereby improving the stability of the connection between the gas nozzle 5 and the gun handle 6, and preventing the gas nozzle 5 from being loosely installed and shifted under the impact of airflow, so that the cold air cannot accurately cool the gas nozzle 5;

[0054] Step 4: After the cooling is completed, the electric telescopic rod 18 drives the limiting block 19 away from the gas nozzle 5 and moves it above the gas nozzle 5 through the control button 14, and starts the motor 16 to drive the rotating rod 17 to rotate, so that the electric telescopic rod 18 drives the limiting block 19 to rotate to a horizontal state and fits the inner wall of the protective tube 3, and then drives the protective tube 3 to move along the gun handle 6 away from the gas nozzle 5 by moving the first movable block 2, so that the protective tube 3 moves to the gun handle 6 and the gas nozzle 5 is exposed, and the cooled gas nozzle 5 is used for welding again.

[0055] Working principle: When using, first select the appropriate high manganese steel welding material to ensure that it meets the welding requirements, clean and remove rust from the welding material, then move the first movable block 2 on the gun handle 6 to drive the slider 8 to move along the slide groove away from the gas nozzle 5, so that the protective tube 3 moves to the gun handle 6 and the gas nozzle 5 is exposed. When the slider 8 moves to the moving groove and pushes the moving block 20 and the plug rod 29 to move, the connecting spring 21 is compressed, and at the same time the rotating plate 22 is deflected to push the block 23 along the inner wall of the moving groove, so that the moving rod 24 drives the circular The protrusion 25 moves downward along the inclined surface of the second movable block 26, stretching the compression spring to push the fixed block 27 to move. When the insertion rod 29 is inserted into the slot, the fixed block 27 moves through the movable opening 28 to the inside of the limiting groove 30 on the inner wall of the second movable block 26 on both sides, limiting the second movable block 26, thereby protecting the connection between the gun handle 6 and the connecting wire 7. Then the wire feeding mechanism of the semi-automatic welding machine is started to automatically feed the welding wire into the arc zone. The manual hand-held welding gun 1 controls the welding direction, speed and angle, so that the arc moves on the high manganese steel workpiece. When welding high manganese steel, after the welding is completed, the first movable block 2 is pushed to drive the slider 8 to move along the slide groove, and the first movable block 2 drives the protective tube 3 to move toward the direction of the gas nozzle 5, so that the fixed block 27 moves along the limiting groove 30, and the slider 8 no longer squeezes the movable block 20. Through the action of the connecting spring 21, the insertion rod 29 is moved away from the slot and the movable block 20 is moved to its original position along the inner wall of the slide groove. At the same time, the rotating plate 22 is deflected to drive the pushing block 23 to move to its original position along the movable groove, so that the movable rod 24 drives the round protrusion 25 along the second movable block 2 6 moves, no longer squeezing the second movable block 26, causing the compression spring to contract and drive the fixed block 27 to move. When the fixed block 27 moves from the movable opening 28 to the inside of the movable groove, it no longer restricts the first movable block 2, so that the first movable block 2 can drive the slider 8 and the protective tube 3 to move on the gun handle 6, moving the protective tube 3 to the outside of the gas nozzle 5. Then, through the control button 14, the control valve 12 transports the cold air inside the storage chamber 9 through the connecting pipe 10 to the inside of the connecting block 11, and sprays it onto the gas nozzle 5 through the nozzle 13, thereby cooling the gas nozzle 5.

[0056] When the protective tube 3 is located outside the gas nozzle 5, the button 14 on the side of the first movable block 2 is first used to control the motor 16 to rotate, so that the motor 16 drives the electric telescopic rod 18 and the limiting block 19 to rotate, and the electric telescopic rod 18 and the limiting block 19 are rotated to the connection between the gas nozzle 5 and the gun handle 6, so that the upper and lower sides are limited, thereby improving the stability of the connection between the gas nozzle 5 and the gun handle 6, and preventing the gas nozzle 5 from being loosely installed and loosened or shifted under the impact of airflow, so that the cold air cannot accurately cool the gas nozzle 5. After the cooling is completed, the electric telescopic rod 18 drives the limiting block 19 away from the gas nozzle 5 and moves above the gas nozzle 5 by controlling the button 14, and starts the motor 16 to drive the rotating rod 17 to rotate, so that the electric telescopic rod 18 drives the limiting block 19 to rotate to a horizontal state and fits the inner wall of the protective tube 3, and then drives the protective tube 3 to move along the gun handle 6 in the direction away from the gas nozzle 5 by moving the first movable block 2, so that the protective tube 3 moves to the gun handle 6 and the gas nozzle 5 is exposed, and the cooled gas nozzle 5 is used for welding again.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A high manganese steel automatic and semi-automatic arc welding device, comprising a welding gun (1), characterized in that: One end of the welding gun (1) is provided with an adjustment structure; the adjustment structure comprises a first movable block (2), a protective tube (3), a mounting ring (4), a cooling structure, and a limiting structure; a first movable block (2) is provided on the outside of one end of the welding gun (1); a protective tube (3) is fixedly mounted on one side of the first movable block (2); a mounting ring (4) is fixedly mounted on the outside of one end of the protective tube (3); the protective tube (3) is located on the outside of one end of the welding gun (1); cooling structures are provided in both the first movable block (2) and the protective tube (3); a limiting structure is provided on one side of the cooling structure and located inside the protective tube (3); The welding gun (1) comprises a gas nozzle (5); The limiting structure comprises a motor (16), a rotating rod (17), an electric telescopic rod (18), and a limiting block (19); the output end of the motor (16) is connected to the rotating rod (17); the middle of the rotating rod (17) is fixedly mounted with the electric telescopic rod (18); the bottom end of the electric telescopic rod (18) is fixedly mounted with the limiting block (19); an arcuate groove is formed at one end of the limiting block (19); the inner wall of the arcuate groove is in contact with the outer side of one end of the air nozzle (5); The cooling structure comprises a storage chamber (9), a connecting pipe (10), a connecting block (11), a control valve (12), and a nozzle (13); Both sides of the mounting ring (4) are provided with mounting grooves, the motor (16) is fixedly mounted on the inner wall of the mounting groove, one end of the rotating rod (17) passes through the upper and lower ends of the protective tube (3) and is rotatably connected to the inner wall of the mounting groove, the electric telescopic rod (18) and the limiting block (19) are located on one side of the connecting block (11), and the limiting block (19) is located at the connection between the gas nozzle (5) and the gun handle (6).

2. The high manganese steel automatic and semi-automatic arc welding device according to claim 1, characterized in that: A gun handle (6) is provided at one end of the gas nozzle (5), a connecting line (7) is provided on one side of the gun handle (6), and slide grooves are provided on both sides of the gun handle (6). Slide blocks (8) are fixedly installed on the inner walls of both sides of the first movable block (2), and the slide blocks (8) are slidably connected to the slide grooves. The first movable block (2) is located at one end of the gun handle (6), and the protective tube (3) is located outside the gas nozzle (5). The limiting structure is symmetrically arranged with the center of the protective tube (3).

3. The high manganese steel automatic and semi-automatic arc welding device according to claim 1, characterized in that: A storage chamber (9) is provided inside the first movable block (2), and cold air is provided inside the storage chamber (9). A connecting pipe (10) is fixedly installed on one side of the first movable block (2), a control valve (12) is provided at one end of the connecting pipe (10), and a connecting block (11) is fixedly installed at the other end thereof. One side of the connecting block (11) is fixedly installed to the inner wall of the protective tube (3), and a plurality of nozzles (13) distributed in an array are fixedly installed on one side of the connecting block (11).

4. The high manganese steel automatic and semi-automatic arc welding device according to claim 3, characterized in that: The storage chamber (9) is communicated with the interior of the connecting block (11) through a connecting pipe (10). The connecting pipe (10), the connecting block (11) and the nozzle (13) are located on both sides of the air nozzle (5) and are symmetrically arranged with respect to the center of the protective tube (3). A button (14) is provided on the side of the first movable block (2) away from the protective tube (3). A connecting port (15) is provided on one side of the button (14) and on one side of the first movable block (2).

5. The high manganese steel automatic and semi-automatic arc welding device according to claim 2, characterized in that: A fixed structure is provided on the side of the gun handle (6) away from the first movable block (2); The fixed structure comprises a moving block (20), a connecting spring (21), a rotating plate (22), a pushing block (23), a moving rod (24), a circular protrusion (25), a second moving block (26), a compression spring, and a fixed block (27). The moving block (20) is slidably connected to the inner wall of the slide groove on both the upper and lower sides. A connecting spring (21) is fixedly installed on one side of the moving block (20). One end of the connecting spring (21) is fixedly installed on the inner wall of the slide groove. The moving block (20) is hingedly connected to the rotating plate (22) on the upper and lower ends. The rotating plate (22) is hingedly connected to the pushing block (23) on one end. The pushing block (23) is fixedly installed on one side of the moving rod (24). A circular protrusion (25) is fixedly installed on the bottom of the moving rod (24). A second moving block (26) is provided on the bottom of the circular protrusion (25). A fixed block (27) is fixedly installed on one side of the second moving block (26). A compression spring is fixedly installed on the side of the fixed block (27) close to the second moving block (26).

6. The high manganese steel automatic and semi-automatic arc welding device according to claim 5, characterized in that: A movable groove is provided at one end of the gun handle (6) and on both sides of the upper and lower sides of the slide groove. A movable opening (28) is provided on one side of the movable groove and on one side of the gun handle (6). The rotating plate (22) is arranged horizontally on both sides of the movable block (20). One side of the pushing block (23) is slidably connected to the inner wall of the movable groove. One side of the second movable block (26) and the fixed block (27) are slidably connected to the inner wall of the movable groove. One end of the compression spring is fixedly installed to the inner wall of the movable groove. The second movable block (26) is close to the compression spring and is an inclined surface. The round protrusion (25) is located at the top of the inclined surface. The fixed block (27) and the movable opening (28) are arranged correspondingly.

7. The high manganese steel automatic and semi-automatic arc welding device according to claim 6, characterized in that: An insertion rod (29) is fixedly installed on one side of the movable block (20) and located in the middle of the connecting spring (21). A slot is provided on the side of the sliding groove close to the connecting spring (21), and the insertion rod (29) is plugged into the slot. A limiting groove (30) is provided on the inner wall of the first movable block (2) close to the slider (8), and the fixed block (27) is slidably connected to the limiting groove (30).

8. A welding process using the high manganese steel automatic or semi-automatic arc welding device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Select appropriate high manganese steel welding materials and ensure that they meet the welding requirements. Clean and remove rust from the welding materials. Then move the first movable block (2) on the gun handle (6) to drive the slider (8) to move along the slide groove away from the gas nozzle (5), so that the protective tube (3) moves to the gun handle (6) and exposes the gas nozzle (5). When the slider (8) moves to the movable groove and pushes the movable block (20) and the plug (29) to move, the connecting spring (21) is compressed and the rotating plate (22) is deflected. The pushing block (23) is moved along the inner wall of the movable groove, so that the movable rod (24) drives the convex protrusion (25) to move downward along the inclined surface of the second movable block (26), and the compression spring is stretched to push the fixed block (27) to move. When the insertion rod (29) is inserted into the slot, the fixed block (27) moves through the movable opening (28) to the inside of the limiting groove (30) on the inner wall of both sides of the first movable block (2), thereby limiting the first movable block (2), thereby protecting the portion where the gun handle (6) is connected to the connecting line (7); Step 2: Restart the wire feeding mechanism of the semi-automatic welding machine to automatically feed the welding wire into the arc zone. The manual handheld welding gun (1) controls the direction, speed and angle of welding so that the arc moves on the high manganese steel workpiece and welds the high manganese steel. When welding is completed, the first movable block (2) is pushed to drive the slider (8) to move along the slide groove. The first movable block (2) drives the protective tube (3) to move toward the direction of the gas nozzle (5), so that the fixed block (27) moves along the limited groove (30). The slider (8) no longer squeezes the moving block (20). Through the action of the connecting spring (21), the insertion rod (29) is moved away from the slot and the moving block (20) is moved to its original position along the inner wall of the slide groove. At the same time, the rotating plate (22) is deflected to drive the pushing block (23) to move along the moving groove. In the original position, the movable rod (24) drives the convex portion (25) to move along the inclined surface of the second movable block (26), and no longer squeezes the second movable block (26) to contract the compression spring to drive the fixed block (27) to move. When the fixed block (27) moves from the movable opening (28) to the inside of the movable groove, the first movable block (2) is no longer limited, so that the first movable block (2) can drive the slider (8) and the protective tube (3) to move on the gun handle (6), and move the protective tube (3) to the outside of the gas nozzle (5). Then, through the control button (14), the control valve (12) transports the cold air inside the storage chamber (9) to the inside of the connecting block (11) through the connecting pipe (10), and sprays it onto the gas nozzle (5) through the nozzle (13), thereby cooling the gas nozzle (5); Step 3: When the protective tube (3) is located outside the gas nozzle (5), the button (14) on the side of the first movable block (2) is first used to control the motor (16) to rotate, so that the motor (16) drives the electric telescopic rod (18) and the limiting block (19) to rotate, and the electric telescopic rod (18) and the limiting block (19) are rotated to the connection between the gas nozzle (5) and the gun handle (6), so that the upper and lower sides are limited, thereby improving the stability of the connection between the gas nozzle (5) and the gun handle (6), and preventing the gas nozzle (5) from being loosely installed and possibly loosened or shifted under the influence of air flow impact, equipment vibration, etc., so that the cold air cannot accurately cool the gas nozzle (5); Step 4: After the cooling is completed, the electric telescopic rod (18) is controlled by the control button (14) to drive the limiting block (19) away from the gas nozzle (5) and move it above the gas nozzle (5), and the motor (16) is started to drive the rotating rod (17) to rotate, so that the electric telescopic rod (18) drives the limiting block (19) to rotate to a horizontal state and fits the inner wall of the protective tube (3), and then the first movable block (2) is moved to drive the protective tube (3) to move away from the gas nozzle (5) along the gun handle (6), so that the protective tube (3) moves to the gun handle (6) and exposes the gas nozzle (5), and the cooled gas nozzle (5) is used for welding again.

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