Automatic and semi-automatic electric arc welding process for high manganese steel

Abstract

The invention belongs to the technical field of welding, and discloses an automatic and semi-automatic electric arc welding process for high manganese steel. The adjusting structure comprises a first movable block, a protective pipe, a mounting ring, a cooling structure and a limiting structure, the first movable block is arranged on the outer side of one end of the welding gun, the protective pipe is fixedly mounted on one side of the first movable block, the mounting ring is fixedly mounted on the outer side of one end of the protective pipe, and the protective pipe is located on the outer side of one end of the welding gun. Cold air in the storage cavity is conveyed into the connecting block through the connecting pipe, the outer side of the air nozzle is cooled through the spraying pipe, the air nozzle is prevented from being in a high-temperature environment for a long time and being subjected to thermal expansion to deform, meanwhile, the connecting position of the air nozzle and the gun handle is limited through the limiting block, the connecting stability is improved, and the situation that the air nozzle is not firmly installed, and the service life is prolonged is prevented. In the cooling process, looseness and displacement are generated under the impact of airflow, so that cold air cannot accurately cool an air nozzle, and the cooling effect is inconvenient to improve.

Description

Technical Field

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

[0002] High manganese steel materials require semi-automatic arc welding devices when welding. Semi-automatic arc welding is an arc welding method in which the welding process is partially carried out automatically by mechanical-electrical devices and partially by manual operation. The wire feeding mechanism of the semi-automatic welding machine can automatically feed the welding wire into the arc zone as the welding wire melts, but the movement of the arc along the joint is completed by a handheld welding torch. The wire feeding mechanism feeds the welding wire into the welding zone under manual control, and the shielding gas protects the welding area. The welding speed, welding gun angle and position mainly rely on the skills and experience of the operator to ensure the quality of the weld.

[0003] In the prior art, a manual hand-held welding torch is used to control the welding direction, speed and angle, etc., so that the arc moves on the high manganese steel workpiece to realize the welding process. The welding torch gas nozzle will generate high temperature after use. If the gas nozzle is in a high temperature environment for a long time, its own metal material may deform due to thermal expansion, thereby changing the shape and size of the gas nozzle, affecting key parameters such as the angle and flow rate of gas ejection, and affecting the quality of subsequent welding. Summary of the invention

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

[0005] A high manganese steel automatic and semi-automatic arc welding device comprises a welding gun, one end of which 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, the protective tube is located on the outside of one end of the welding gun, cooling structures are provided in the first movable block and in the protective tube, and a limiting structure is provided on one side of the cooling structure and located 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 cavity, a connecting pipe, a connecting block, a control valve, and a nozzle. A storage cavity is opened inside the first movable block, and cold air is arranged inside the storage cavity. A connecting pipe is fixedly installed on one side of the first movable block, a control valve is arranged at one end of the connecting pipe, and a connecting block is fixedly installed on the other end thereof, 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, the connecting block and the 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 one 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 groove is opened at one end of the limiting block, and the inner wall of the arc 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 fixing 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 round convex, a second moving block, a compression spring, and a fixed block. The upper and lower sides of the moving block are both slidably connected to the inner wall of the slide groove, a connecting spring is fixedly installed on one side of the moving block, one end of the connecting spring is fixedly installed on 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, a moving rod is fixedly installed on one side of the pushing block, a round convex is fixedly installed on the bottom of the moving rod, a second moving block is arranged at the bottom of the round convex, a fixed block is fixedly installed on one side of the second moving block, and a compression spring is fixedly installed on the side of the fixed block close to the second moving block.

[0013] As a preferred embodiment of the above technical solution, a movable groove is provided at one end of the gun handle and located 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 located on one side of the gun handle, the rotating plates are horizontally arranged on both sides of the movable block, one side of the pushing block is slidably connected to the inner wall of the movable groove, one side of the second movable block and the fixed block are slidably connected to the inner wall of the movable groove, one end of the compression spring is fixedly installed on the inner wall of the movable groove, the side of the second movable block close to the compression spring is an inclined surface, the round convex is located at the top of the inclined 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 located in the middle of the connecting spring, a slot is provided on the side of the slide groove close to the connecting spring, the insert rod is plugged into the slot, a limiting groove is provided on the inner wall of the second movable block close to the sliding block, 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 appropriate high manganese steel welding materials to ensure that they meet welding requirements, clean and remove rust from 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 exposes the gas nozzle. When the slider moves to the moving groove and pushes the moving 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 moving groove, so that the moving rod drives the round 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. Manually hold the welding gun to control the direction, speed and angle of welding, so that the arc moves on the high manganese steel workpiece to weld the high manganese steel. When welding is completed, push the first movable block to drive the slider to move along the slide groove, and the first movable block drives the protective tube to move in the direction of the gas nozzle, so that the fixed block moves along the limited groove, and the slider no longer squeezes the movable block. Through the action of the connecting spring, the insertion rod is 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 to its original position along the movable groove, so that the movable rod drives the circular convex to move along the inclined surface of the second movable block, and no longer squeezes the second movable block to shrink the compression spring to drive the fixed block to move. When the fixed block moves from the movable port to the inside of the movable groove, the first movable block is no longer limited, 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 cavity to the inside of the connecting block through the connecting pipe, 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 air nozzle, first control the motor to rotate through the button on one 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 air nozzle and the gun handle, so that the upper and lower sides are limited, thereby improving the stability of the connection between the air nozzle and the gun handle, and preventing the air nozzle from being loosely installed and shifted under the impact of airflow, so that the cold air cannot accurately cool the air nozzle;

[0019] Step 4: After the cooling is completed, the electric telescopic rod is controlled by the 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 exposes the gas nozzle, and the cooled gas nozzle is 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 cavity to the inside of the connection block through the connection pipe, and cools the outside of the gas nozzle by the nozzle, so as to prevent the gas nozzle from being in a high temperature environment for a long time, causing thermal expansion and deformation, thereby affecting 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 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, 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 round 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 protection tube and the mounting ring of the embodiment;

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

[0028] Figure 6 What is shown is the internal structure diagram of the protection tube of the embodiment;

[0029] Figure 7 Shown is a structural diagram of a gun handle of an embodiment;

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

[0031] Fig. 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 wire; 8. slider; 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. ​​plug rod; 30. limiting groove. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution 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 arranged 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 arranged in the first movable block 2 and the protective tube 3. A limiting structure is arranged 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 arranged at one end of the gas nozzle 5, a connecting line 7 is arranged on one side of the gun handle 6, and slide grooves are opened 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 be used to 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 be used to 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 is used to limit 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 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 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 direction of 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. The storage cavity 9 is opened inside the first movable block 2, and cold air is arranged 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 arranged 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 one side of the connecting block 11 is fixedly installed with a plurality of nozzles 13 distributed in an array.

[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 to prevent the gas nozzle 5 from being in a high-temperature environment for a long time, which causes 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 spraying, 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 air 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 one 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 with the rotating rod 17, the electric telescopic rod 18 is fixedly installed in the middle of the rotating rod 17, and the limiting block 19 is fixedly installed at the bottom end of the electric telescopic rod 18. An arc groove is opened at one end of the limiting block 19, and the inner wall of the arc groove is in contact 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 thereto. 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 limiting block 19 is then extended by the electric telescopic rod 18, 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 air nozzle 5 and the gun handle 6.

[0044] The installation 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 installation groove, and the electric telescopic rod 18 drives the limiting block 19 to rotate. After the air nozzle 5 is cooled, the electric telescopic rod 18 and the limiting block 19 are rotated to the inner wall of the protective tube 3 and are parallel to it, so as 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 air nozzle 5 cannot be exposed, which affects welding again.

[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 round 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 both the upper and lower ends, the pushing block 23 is hingedly connected to one end of the rotating plate 22, a moving rod 24 is fixedly installed on one side of the pushing block 23, a round protrusion 25 is fixedly installed on the bottom of the moving rod 24, a second moving block 26 is arranged on the bottom of the round protrusion 25, a fixed block 27 is fixedly installed on one side of the second moving block 26, and a compression spring is fixedly installed on the side of the fixed block 27 close to the second moving block 26.

[0047] After the gas nozzle 5 has cooled, the protective tube 3 is driven to move toward the gun handle 6 through the first movable block 2, and 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 the rotating plate 22 deflects 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, the first movable block 2 is limited, the position of the protective tube 3 is limited, and the protective tube 3 is prevented from moving during welding, which affects the welding effect. In addition, the position of the first movable block 2 can be limited, and the connection between the gun handle 6 and the connecting line 7 can be protected to prevent the connection from being damaged due to 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 located 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 located 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, 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 an inclined surface close to the compression spring, the round convex 25 is located at the top of the inclined surface, the fixed block 27 is arranged corresponding to the movable opening 28, a plug 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 slide groove close to the connecting spring 21, the plug rod 29 is plugged into the slot, a limiting slot 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 slot 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 opening 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 appropriate high manganese steel welding materials to ensure that they meet 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 insertion rod 29 to move, 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 round convex 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 walls on both sides of the second movable block 26, and the second movable block 26 is limited, 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 to weld the high manganese steel. When the 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 in the direction of the gas nozzle 5, so that the fixed block 27 moves along the limiting 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 deflects and drives the pushing block 23 along The movable groove moves to the original position, so that the movable rod 24 drives the round protrusion 25 to move along the inclined surface of the second movable block 26, and no longer squeezes the second movable block 26 to shrink 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, so as to cool the gas nozzle 5.

[0053] Step 3: When the protection tube 3 is located outside the air nozzle 5, the button 14 on one side of the first movable block 2 is 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 air 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 air nozzle 5 and the gun handle 6, and preventing the air nozzle 5 from being loosely installed and shifted under the impact of airflow, so that the cold air cannot accurately cool the air 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 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 fit 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 exposes the gas nozzle 5, and the cooled gas nozzle 5 is used for welding again.

[0055] Working principle: When using, first select suitable high manganese steel welding materials to 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 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 move the pushing 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 on both sides of the second movable block 26, limiting the second movable block 26, thereby protecting the part where the gun handle 6 and the connecting line 7 are connected. 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. The high manganese steel is welded. When the 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 air nozzle 5, so that the fixed block 27 moves along the limiting groove 30. 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 moves to the 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 to move to the 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, and the second movable block 26 is no longer squeezed to shrink the compression spring 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, the first movable block 2 is no longer restricted, 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, the control button 14 is used to make the control valve 12 transport the cold air inside the storage chamber 9 to the inside of the connecting block 11 through the connecting pipe 10, and spray it onto the gas nozzle 5 through the nozzle 13, so as to cool 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 through the control button 14, 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 fit 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 along the gun handle 6 in a direction away from the gas nozzle 5, 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.

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

Claims

1. A high manganese steel automatic or semi-automatic arc welding device, comprising a welding gun (1), characterized in that: An adjustment structure is provided at one end of the welding gun (1); 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 inside the first movable block (2) and the protective tube (3); and a limiting structure is provided on one side of the cooling structure and inside the protective tube (3).

2. The high manganese steel automatic and semi-automatic arc welding device according to claim 1 is characterized in that: The welding gun (1) comprises a gas nozzle (5), a gun handle (6) is arranged at one end of the gas nozzle (5), a connecting line (7) is arranged on one side of the gun handle (6), sliding grooves are arranged on both sides of the gun handle (6), sliding blocks (8) are fixedly installed on the inner walls of both sides of the first movable block (2), and the sliding blocks (8) are slidably connected to the sliding grooves, the first movable block (2) is located at one end of the gun handle (6), the protective tube (3) is located outside the gas nozzle (5), and 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 is characterized in that: The cooling structure comprises a storage cavity (9), a connecting pipe (10), a connecting block (11), a control valve (12), and a nozzle (13); the first movable block (2) has a storage cavity (9) therein, and cold air is arranged inside the storage cavity (9); a connecting pipe (10) is fixedly mounted on one side of the first movable block (2); a control valve (12) is arranged at one end of the connecting pipe (10), and a connecting block (11) is fixedly mounted on the other end thereof; one side of the connecting block (11) is fixedly mounted to the inner wall of the protective tube (3); and one side of the connecting block (11) has a plurality of nozzles (13) distributed in an array fixedly mounted therein.

4. The high manganese steel automatic and semi-automatic arc welding device according to claim 3 is characterized in that: The storage chamber (9) is communicated with the interior of the connection block (11) through a connection pipe (10); the connection pipe (10), the connection 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 protection pipe (3); a button (14) is arranged on the side of the first movable block (2) away from the protection pipe (3); and a connection 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 1 is characterized in that: 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) in a transmission manner; the middle of the rotating rod (17) is fixedly mounted with the electric telescopic rod (18); the bottom of the electric telescopic rod (18) is fixedly mounted with the limiting block (19); one end of the limiting block (19) is provided with an arc groove, and the inner wall of the arc groove is in contact with the outer side of one end of the air nozzle (5).

6. The high manganese steel automatic and semi-automatic arc welding device according to claim 5, characterized in that: 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).

7. The high manganese steel automatic and semi-automatic arc welding device according to claim 2 is characterized in that: A fixing 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 round 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 at both 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) at both upper and lower ends; a pushing block (23) is hingedly connected to one end of the rotating plate (22); a moving rod (24) is fixedly installed on one side of the pushing block (23); a round protrusion (25) is fixedly installed on the bottom of the moving rod (24); a second moving block (26) is arranged at the bottom of the round protrusion (25); a fixed block (27) is fixedly installed on one side of the second moving block (26); and a compression spring is fixedly installed on the side of the fixed block (27) close to the second moving block (26).

8. The high manganese steel automatic and semi-automatic arc welding device according to claim 7, characterized in that: A movable groove is provided at one end of the gun handle (6) and located 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 located 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 on 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) and the movable opening (28) are arranged correspondingly.

9. The high manganese steel automatic and semi-automatic arc welding device according to claim 7, 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 slide groove close to the connecting spring (21); the insertion 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 sliding block (8); and the fixed block (27) is slidably connected to the limiting groove (30).

10. A welding process using the high manganese steel automatic or semi-automatic arc welding device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Select 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 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 push block (23) is moved along the inner wall of the movable groove, so that the movable rod (24) drives the round 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 grooves (30) on the inner walls of both sides of the second movable block (26), thereby limiting the second movable block (26), 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, manually hold the welding gun (1) to control the welding direction, speed and angle, 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, and the first movable block (2) drives the protective tube (3) to move in 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 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 the 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. The movable rod (24) is in the original position, so that the movable rod (24) drives the convex protrusion (25) to move along the inclined surface of the second movable block (26), and the second movable block (26) is no longer squeezed to shrink 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 restricted, 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), so as to cool the gas nozzle (5); Step 3: When the protective tube (3) is located outside the air 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 air 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 air nozzle (5) and the gun handle (6), and preventing the air nozzle (5) from being loosely installed and possibly loosened or shifted due to airflow impact, equipment vibration, etc., so that the cold air cannot accurately cool the air nozzle (5); Step 4: After the temperature is lowered, the electric telescopic rod (18) drives the limiting block (19) away from the gas nozzle (5) and moves it above the gas nozzle (5) by controlling the button (14), 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 protection tube (3), and then the first movable block (2) is moved to drive the protection tube (3) to move away from the gas nozzle (5) along the gun handle (6), so that the protection 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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