Welding gun

Abstract

The invention relates to the technical field of welding equipment, and discloses a welding gun which comprises a gun body, a welding opening is formed in the gun body, and the gun body is provided with a gun handle part capable of being held by hand; the welding assembly comprises a tungsten electrode and a driving part, at least part of the tungsten electrode extends out of the gun body from the welding opening, and the driving part is connected with the tungsten electrode and used for driving the tungsten electrode to swing around the first axis; the water cooling assembly is arranged in the gun body and arranged on the driving part in a sleeving manner, and the water cooling assembly is used for cooling the welding assembly; and the protective gas assembly is arranged in the gun body and located on the circumferential outer side of the tungsten electrode, and the protective gas assembly is used for conveying protective gas to the welding opening. Therefore, pendulum motion of the tungsten electrode can be achieved, operators are assisted in manual welding to form attractive and high-quality welding seams, and the labor intensity of the operators during manual welding can be reduced. And meanwhile, the cooling effect at the welding gun is good, the continuous welding working time of the welding gun can be prolonged, and the welding working efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of welding equipment, and particularly to a welding gun. Background Art

[0002] Argon arc welding can be applied to the welding process of important components such as pressure vessels, ships, and aerospace.

[0003] During traditional argon arc welding, an operator (such as a welder) usually operates by holding the welding gun in one hand and the welding wire in the other hand. During the welding process, the movement of the welding gun needs to swing left and right with one side of the ceramic nozzle as the fulcrum, causing the tungsten electrode to swing back and forth on both sides of the groove. As a result, the operator needs to shake the handle for a long time, resulting in a high labor intensity for the operator and there are also human errors, which is not conducive to the control of welding quality. At the same time, the cooling method of the welding gun is air cooling, which cannot meet the usage requirements of the welding gun for long-term welding work.

[0004] In related technologies, for automatic argon arc welding, the welding gun is swung left and right by setting a three-axis or multi-axis robotic arm in the welding equipment. And the welding gun is only applicable to the automatic welding method and cannot meet the switching between manual welding and automatic welding, resulting in limited application scenarios of the welding equipment. Summary of the Invention

[0005] This application aims to at least solve one of the technical problems existing in the prior art. To this end, an object of this application is to provide a welding gun that can assist the user in welding, and can improve the controllability of the welding process, which is conducive to improving the stability of the welding implementation process and the welding quality.

[0006] The welding gun according to an embodiment of this application includes: a gun body, the gun body is formed with a welding port, and the gun body has a handle portion that can be held by hand; a welding assembly, the welding assembly includes a tungsten electrode and a driving portion, at least part of the tungsten electrode extends out of the gun body from the welding port, the driving portion is connected to the tungsten electrode and is used to drive the tungsten electrode to swing around a first axis; a water cooling assembly, the water cooling assembly is arranged in the gun body and sleeved on the driving portion, and the water cooling assembly is used to cool the welding assembly; a shielding gas assembly, the shielding gas assembly is arranged in the gun body and located on the circumferential outer side of the tungsten electrode, and the shielding gas assembly is used to convey shielding gas to the welding port.

[0007] In the present application, the driving part in the welding torch can drive the tungsten electrode to swing around the first axis, thereby realizing the pendulum motion of the tungsten electrode, assisting the operator in manual welding to form beautiful and high-quality weld seams, and being able to reduce the labor intensity of the operator during manual welding. At the same time, the welding assembly can be water-cooled by the water-cooling component, which helps to improve the cooling effect at the welding torch, can extend the continuous welding working hours of the welding torch, improve the welding work efficiency, and the protector component can convey a shielding gas (such as argon) to the welding interface to realize the argon arc welding of the welding torch.

[0008] Among them, the gun body has a handle part for the operator to hold, which can meet the welding operation requirements of the operator holding the welding torch, and the gun body can also be applied to an automatic welding device, so that the welding torch can meet the use requirements of various welding working conditions and has good versatility.

[0009] According to some embodiments of the present application, the gun body includes a gun main body part, the gun main body part forms a first cavity extending in a first direction, and the welding interface is formed at one end of the gun main body part in the first direction, and the handle part is connected to the gun main body part and forms a second cavity extending in a second direction.

[0010] According to some embodiments of the present application, the driving part includes: a driving motor, the driving motor is arranged in the second cavity, and the driving motor has a driving shaft adapted to rotate around the first axis, and at least part of the driving shaft extends into the first cavity; a spherical electrode rotator, the spherical electrode rotator is fixedly connected to the driving shaft, and the spherical electrode rotator is provided with an electrode chuck for installing the tungsten electrode.

[0011] According to some embodiments of the present application, the first axis is arranged parallel to the second direction; and / or, the electrode chuck is used to fix the tungsten electrode on the spherical electrode rotator and set the angle between the tungsten electrode and the first axis to be an obtuse angle.

[0012] According to some embodiments of the present application, the welding assembly further includes a swing amplitude adjuster, the swing amplitude adjuster is arranged on the gun main body part and is used for limiting cooperation with the spherical electrode rotator to limit the swing amplitude of the tungsten electrode; and / or, the driving part further includes a motor adjustment knob, the motor adjustment knob is arranged on the handle part, and the motor adjustment knob is connected to the driving motor and is used for adjusting the output power of the driving motor to adjust the swing frequency of the tungsten electrode.

[0013] According to some embodiments of the present application, the water-cooling assembly includes: a water-cooling jacket disposed on the spherical electrode rotator, the water-cooling jacket forming a water-cooling cavity and being provided with a liquid inlet and a liquid outlet communicating with the water-cooling cavity; a liquid inlet pipe disposed in the second cavity, and one end of the liquid inlet pipe communicating with the liquid inlet; a liquid outlet pipe disposed in the second cavity, and one end of the liquid outlet pipe communicating with the liquid outlet.

[0014] According to some embodiments of the present application, the other end of the liquid inlet pipe forms a liquid inlet interface, and the liquid inlet interface is disposed outside the gun handle; and / or, the other end of the liquid outlet pipe forms a liquid outlet interface, and the liquid outlet interface is disposed outside the gun handle; and / or, the liquid inlet pipe is connected to the drive motor and is used for heat exchange cooperation with the drive motor.

[0015] According to some embodiments of the present application, the shielding gas assembly includes: a gas guiding sleeve disposed in the first cavity, and the gas guiding sleeve is provided with a gas outlet and a gas inlet, and the gas outlet is used for outputting the shielding gas in the gas guiding sleeve to the welding joint; an air inlet pipe disposed in the second cavity, and one end of the air inlet pipe communicating with the gas inlet, and the air inlet interface of the air inlet pipe is disposed outside the gun handle.

[0016] According to some embodiments of the present application, the shielding gas assembly further includes a shielding gas regulator connected to the air inlet pipe and used for adjusting the flow rate of the shielding gas delivered to the side of the gas guiding sleeve.

[0017] The welding gun according to the embodiments of the present application has at least the following advantages compared with the prior art: (1) In the welding gun, the drive shaft of the drive motor can drive the spherical electrode rotator to rotate around the first axis, so as to drive the tungsten electrode to swing in a pendulum around the first axis through the spherical electrode rotator, thereby simplifying the operation difficulty when the operator holds the welding gun for welding, simplifying the operation and reducing the labor intensity of the welding work; (2) The swing amplitude of the tungsten electrode relative to the gun body can be adjusted within a certain range to meet the requirements of the welding layout, and the swing frequency of the tungsten electrode relative to the gun body can be adjusted within a certain range to meet the control requirements of the welding process; (3) The welding gun has high use flexibility, can be held by the operator, can meet the use requirements of the operator's manual operation, and can also be applied to welding equipment (such as: clamped by an automatic clamping mechanism), and the welding gun is driven by the welding equipment to realize the welding function.

[0018] The additional aspects and advantages of the present application will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present application. Brief Description of the Drawings

[0019] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, where: Figure 1 is a schematic structural diagram of a welding gun according to an embodiment of the present application; Figure 2 is a partial schematic view of a welding gun according to an embodiment of the present application Figure 1 ; Figure 3 is a partial schematic view of a welding gun according to an embodiment of the present application Figure 2 ; Figure 4 is a schematic diagram of the usage process of a welding gun according to an embodiment of the present application.

[0020] Reference Signs: Welding gun 100: Gun body 1; Welding port 101; Gun main body part 11; First cavity 111; Tail end cover 112; Ceramic nozzle 113; Gun handle part 12; Second cavity 121; Control switch 122; Welding assembly 2; Tungsten electrode 21; Driving part 22; Driving motor 221; Driving shaft 2211; Spherical electrode rotator 222; Electrode collet 223; Swing amplitude regulator 23; Motor adjustment knob 24; Water cooling assembly 3; Water cooling jacket 31; Liquid inlet 311; Liquid outlet 312; Liquid inlet pipe 32; Liquid inlet interface 321; Liquid outlet pipe 33; Liquid outlet interface 331; Protective gas assembly 4; Gas guide sleeve 41; Gas outlet 411; Gas inlet 412; Gas inlet pipe 42; Gas inlet interface 421; Protective gas regulator 43. Detailed Description of the Embodiments

[0021] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0022] Reference will be made below to Figures 1 - 4 describe the welding gun 100 according to an embodiment of the present application.

[0023] As Figure 1As shown, the welding gun 100 according to an embodiment of the present application includes: a gun body 1, a welding assembly 2, a water cooling assembly 3, and a shielding gas assembly 4. Thus, argon arc welding is achieved through the welding gun 100, that is, a welding technique using argon as the shielding gas. By applying a high current, the welding material melts into a liquid state on the base material to be welded to form a molten pool, enabling a welding technique where the base metal and the welding material achieve metallurgical bonding. Argon shielding gas can be passed around the arc to isolate the air outside the welding area and prevent oxidation of the welding area.

[0024] Combined with Figure 1 and Figure 3 As shown, a welding interface 101 is provided on the gun body 1, and the gun body 1 has a handle portion 12 for holding by hand. The welding assembly 2 includes a tungsten electrode 21 and a driving portion 22, and at least a part of the tungsten electrode 21 extends out of the gun body 1 from the welding interface 101. The driving portion 22 is connected to the tungsten electrode 21, and the driving portion 22 is used to drive the tungsten electrode 21 to swing around a first axis, so as to realize the reciprocating swing of the tungsten electrode 21 at the welding interface 101, thereby driving the molten pool molten iron to separate to both sides of the groove, forming a fish-scale weld seam, and ensuring the beauty and quality of the weld seam formed by the welding gun 100.

[0025] As Figure 1 shown, the water cooling assembly 3 is arranged inside the gun body 1, and the water cooling assembly 3 is sleeved on the driving portion 22. The water cooling assembly 3 can be used to cool the welding assembly 2 to prevent the temperature of the welding gun 100 from being too high at the welding assembly 2, which helps to extend the working time of the welding gun.

[0026] As Figure 1 shown, the shielding gas assembly 4 is arranged inside the gun body 1, and the shielding gas assembly 4 is located on the circumferential outer side of the tungsten electrode 21. The shielding gas assembly 4 is used to convey shielding gas to the welding interface 101.

[0027] It can be understood that the shielding gas assembly 4 is located at a position suitable for avoiding the tungsten electrode 21, and the shielding gas assembly 4 can convey shielding gas to the welding interface 101 to achieve the gas shielding function at the welding area through the shielding gas, effectively preventing oxidation of the welding area, improving the welding effect of the welding gun 100, and ensuring the welding quality. Among them, the shielding gas is preferably argon.

[0028] It should be noted that argon arc welding can be applied to the welding process of important components such as pressure vessels, ships, and aerospace. During traditional argon arc welding, operators (such as welders) usually operate by holding the welding gun in one hand and the welding wire in the other hand. During the welding process, the movement of the welding gun needs to swing left and right with one side of the ceramic nozzle as the fulcrum, causing the tungsten needle to swing back and forth on both sides of the groove, resulting in the operator having to shake the handle for a long time, increasing the labor intensity of the operator and introducing human errors, which is not conducive to the control of welding quality. At the same time, the cooling method of the welding gun is air cooling, which cannot meet the usage requirements of the welding gun for long-term welding work.

[0029] In the related art, for automatic argon arc welding, a three-axis or multi-axis robotic arm is set in the welding equipment to realize the left and right swing of the welding torch. Moreover, the welding torch is only applicable to the automatic welding method and cannot meet the switching between manual welding and automatic welding, resulting in limited application scenarios of the welding equipment.

[0030] In the present application, the driving part 22 in the welding torch 100 can drive the tungsten electrode 21 to swing around the first axis, so as to realize the pendulum motion of the tungsten electrode 21, assist the operator in manual welding to form beautiful and high-quality welds, and can reduce the labor intensity of the operator during manual welding. At the same time, the welding assembly 2 can be water-cooled by the water-cooling assembly 3, which helps to improve the cooling effect at the welding torch 100, can extend the continuous welding working time of the welding torch 100, improve the welding work efficiency, and the protector assembly can convey a shielding gas (such as argon) to the weld interface 101 to realize the argon arc welding of the welding torch 100.

[0031] Among them, the gun body 1 has a handle part 12 for the operator to hold, which can meet the welding operation requirements of the operator holding the welding torch 100. Moreover, the gun body 1 can also be applied to an automatic welding device, so that the welding torch 100 can meet the use requirements of various welding working conditions and has good versatility.

[0032] As Figure 1 shown, in a further embodiment of the present application, the gun body 1 includes a gun main body part 11 and a handle part 12. The gun main body part 11 forms a first cavity 111 extending in the first direction, and the weld interface 101 is formed at one end of the gun main body part 11 in the first direction. The handle part 12 is connected to the gun main body part 11 and forms a second cavity 121 extending in the second direction.

[0033] Among them, the first cavity 111 and the second cavity 121 together constitute the layout space in the welding torch 100 for arranging the welding assembly 2, the water-cooling assembly 3 and the shielding gas assembly 4, so as to meet the installation requirements of the welding assembly 2, the water-cooling assembly 3 and the shielding gas assembly 4.

[0034] Referring to Figure 1 , the connection position of the handle part 12 and the gun main body part 11 is located on the side of the gun main body part 11 away from the weld interface 101 in the first direction, so as to arrange the handle part 12 at a position away from the weld interface 101, which is convenient for the operator to hold.

[0035] As Figure 1As shown, in some embodiments of the present application, the gun main body 11 is provided with a tail end cap 112. The tail end cap 112 is arranged at the other end of the gun main body 11 in the first direction. The tail end cap 112 is arranged opposite to the welding interface 101 in the first direction. The end of the gun main body 11 can be closed by the tail end cap 112, so as to prevent the components arranged in the first cavity 111 from being exposed, thus playing a protective role.

[0036] As Figure 1 shown, in some embodiments of the present application, the driving part 22 includes: a driving motor 221 and a spherical electrode rotator 222. The driving motor 221 is arranged in the second cavity 121, and the driving motor 221 has a driving shaft 2211 adapted to rotate around the first axis. At least a part of the driving shaft 2211 extends into the first cavity 111. The spherical electrode rotator 222 is arranged in the first cavity 111, and the spherical electrode rotator 222 is fixedly connected to the driving shaft 2211, so as to drive the spherical electrode rotator 222 to rotate synchronously through the driving shaft 2211.

[0037] Among them, the spherical electrode rotator 222 is provided with an electrode collet 223 for installing the tungsten electrode 21. The electrode collet 223 can be clamped and matched with the tungsten electrode 21 to connect and cooperate the tungsten electrode 21 with the spherical electrode rotator 222, so that the tungsten electrode 21 can be driven by the spherical electrode rotator 222 to move, so as to realize the swinging action of the tungsten electrode 21.

[0038] It should be noted that the electrode collet 223 is used to fix the tungsten electrode 21 and conduct current, so as to energize the tungsten electrode 21 while fixing the tungsten electrode 21 through the electrode collet 223, so as to ensure the stability of the tungsten electrode 21 at high temperature and improve the reliability of the process of driving the tungsten electrode 21 to swing by the spherical electrode rotator 222.

[0039] Furthermore, the electrode collet 223 has good electrical conductivity to reduce resistance loss, and the electrode collet 223 has good high temperature resistance and corrosion resistance, so as to extend the service life of the spherical electrode rotator 222. At the same time, the outside of the electrode collet 223 is wrapped with an insulating material to insulate and protect the electrode collet 223 through the insulating material, prevent the operator from getting an electric shock and avoid potential safety hazards caused by current leakage.

[0040] As Figure 1 shown, in some embodiments of the present application, the first axis is arranged parallel to the second direction, that is to say, the axial direction of the driving shaft 2211 is arranged parallel to the second direction, so that the driving shaft 2211 can be arranged along the extension direction of the second cavity 121, and the difficulty of arranging the motor in the second cavity 121 can be reduced.

[0041] In some embodiments of the present application, the electrode jacket 223 is used to fix the tungsten electrode 21 on the spherical electrode rotator 222, and the angle between the tungsten electrode 21 fixed on the motor jacket 223 and the first axis is set as an obtuse angle, so that the drive shaft 2211 extends obliquely away from the welding interface 101 from the connection and cooperation part with the spherical electrode rotator 222, facilitating the arrangement of the drive motor 221 at a position suitable for avoiding the tungsten electrode 21.

[0042] When the first axis is parallel to the second direction and the angle between the tungsten electrode 21 and the second direction is arranged as an obtuse angle at the same time, the gun body 1 can be configured into a shape suitable for being held and operated by an operator.

[0043] It can be understood that the gun handle part 12 is for an operator to hold. The extending direction of the gun handle part 12 (i.e., the second direction) is arranged parallel to the first axis. That is to say, the gun handle part 12 extends away from the welding interface 101 from the connection and cooperation part with the gun main body part 11, and a space for an operator to hold can be reserved at the gun handle part 12, facilitating the operator to hold the welding gun 100 through the gun handle part 12.

[0044] As Figure 1 shown, in some embodiments of the present application, the welding assembly 2 further includes a swing amplitude regulator 23. The swing amplitude regulator 23 is arranged on the gun main body part 11, and the swing amplitude regulator 23 is used for limiting cooperation with the spherical electrode rotator 222 to limit the swing amplitude of the tungsten electrode 21. Thus, during the welding process of the welding gun 100, the swing amplitude of the tungsten electrode 21 can be controlled by the swing amplitude regulator 23 according to the welding requirements.

[0045] During the traditional argon arc welding process, an operator needs to move the gun to form fish-scale-shaped weld seams. The tungsten electrode 21 of the welding gun 100 in the embodiments of the present application can swing around the first axis, thereby being able to reduce the difficulty of moving the gun during the welding process of the welding gun 100 and can form beautiful and high-quality fish-scale-shaped weld seams.

[0046] It can be understood that the weld seam size formed by the tungsten electrode 21 during the welding process is related to the swing amplitude of the tungsten electrode 21. When the tungsten electrode 21 is in effective contact with the molten pool molten iron, as the swing amplitude of the tungsten electrode 21 increases, the formed weld width also increases; as the swing amplitude of the tungsten electrode 21 decreases, the formed weld width also decreases. Thus, the swing amplitude of the tungsten electrode 21 can be set according to the weld seam requirements at the welding part, and the above-mentioned "weld seam requirements" include welding layout requirements.

[0047] Refer to Figure 1The swing amplitude regulator 23 is disposed on the gun body 11 , and the swing amplitude regulator 23 can be in contact with the spherical electrode rotator 222 to control the swing amplitude of the tungsten electrode 21 by limiting the rotation range of the spherical electrode rotator 222 .

[0048] The tungsten electrode 21 is driven by the spherical electrode rotator 222 to swing. The swing amplitude regulator 23 cooperates with the spherical electrode rotator 222 to limit the swing range of the tungsten electrode 21, thereby adjusting the swing amplitude of the tungsten electrode 21.

[0049] In some optional embodiments, a limit portion is provided on the spherical electrode rotator 222, and a limit matching portion is provided on the swing amplitude regulator 23. The swing amplitude regulator 23 is exposed from the gun body 11, so that the swing amplitude regulator 23 is arranged at a position convenient for the operator to operate, such as: the paddle is exposed from the upper part of the gun body, so that the operator can adjust the position of the limit matching portion in the swing amplitude regulator 23 relative to the gun body 11 by prying the paddle, and the limit matching portion cooperates with the limit portion to limit the movement range of the spherical electrode rotator 222.

[0050] In some specific embodiments of the present application, the limiting portion is configured as a limiting protrusion, the limiting matching portion is configured as a limiting rib, the limiting rib is arranged on the movement path of the limiting protrusion, and the limiting rib can be abutted and matched with the limiting protrusion to limit the rotation range of the spherical electrode rotator 222. It should be noted that the specific structure of the limiting portion and the limiting matching portion and the limiting matching method are not limited thereto, and can also be designed according to the swing amplitude adjustment requirements of the tungsten electrode 21.

[0051] In other embodiments of the present application, the swing amplitude regulator 23 is configured to cooperate with the water cooling jacket 31, and the swing amplitude regulator 23 drives the water cooling jacket 31 to move to clamp and cooperate with the spherical electrode rotator 222, thereby limiting the rotation range of the spherical electrode rotator 222. Among them, a limiting edge is provided on the spherical electrode rotator 222, and the limiting edge can cooperate with the water cooling jacket 31.

[0052] like Figure 1 As shown, in some embodiments of the present application, the driving unit 22 also includes a motor adjustment knob 24, which is disposed on the gun grip 12, and the motor adjustment knob 24 is connected to the driving motor 221, and the motor adjustment knob 24 is used to adjust the output power of the driving motor 221 to adjust the swing frequency of the tungsten pole 21.

[0053] Reference Figure 1As shown, the motor adjustment knob 24 is provided on the gun handle portion 12, so that the motor adjustment knob 24 is arranged at a position convenient for the operator to adjust. The user can adjust the output power of the drive motor 221 by rotating the motor adjustment knob 24, so as to adjust the motion mode of the drive motor 221 driving the spherical electrode rotator 222, and further realize driving the tungsten electrode 21 to swing at different swing frequencies.

[0054] It can be understood that when the output power of the drive motor 221 is high, the drive shaft 2211 can drive the tungsten electrode 21 to swing quickly through the spherical electrode rotator 222; when the output power of the drive motor 221 is low, the drive shaft 2211 can drive the tungsten electrode 21 to swing slowly through the spherical electrode rotator 222. The fast and slow in the above-mentioned "fast swing" and "slow swing" are relative. For example: the frequency of the tungsten electrode 21 reciprocating 30 times per minute is a fast swing, and the frequency of the tungsten electrode 21 reciprocating 10 times per minute is a slow swing. Thus, the swing frequency of the tungsten electrode 21 can be adjusted through the motor adjustment knob 24 according to the welding requirements (such as the specifications of the welded parts, the groove conditions, etc.), so that the welding gun 100 can realize various welding methods, improve the flexibility of use of the welding gun 100, and the welding gun 100 can meet the control requirements of the welding process.

[0055] As Figure 1 shown, in some embodiments of the present application, the water cooling assembly 3 includes a water cooling jacket 31, a liquid inlet pipe 32 and a liquid outlet pipe 33.

[0056] Among them, the water cooling jacket 31 is provided on the spherical electrode rotator 222, and the water cooling jacket 31 forms a water cooling cavity and is provided with a liquid inlet 311 and a liquid outlet 312 communicating with the water cooling cavity. The liquid inlet pipe 32 is arranged at the second cavity 121, and one end of the liquid inlet pipe 32 is communicated with the liquid inlet 311. The liquid medium can flow into the water cooling cavity through the liquid inlet pipe 32. The liquid outlet pipe 33 is arranged at the second cavity 121, and one end of the liquid outlet pipe 33 is communicated with the liquid outlet 312. The liquid medium in the water cooling cavity can be discharged through the liquid outlet pipe 33, so as to realize the circulation of the liquid medium in the water cooling assembly 3 and improve the cooling performance of the water cooling assembly 3.

[0057] Referring to Figure 1 , it can be understood that the water cooling jacket 31 is arranged in the first cavity 111 and at the spherical electrode rotator 222, so that the water cooling jacket 31 can exchange heat with the spherical electrode rotator 222, so as to take away the heat through the liquid medium in the water cooling jacket 31, realize the cooling of the spherical electrode rotator 222, avoid the temperature at the welding assembly 2 from being too high, and help to extend the working time of the welding gun 100.

[0058] It can be understood that since the spherical electrode rotator 222 can fix the tungsten electrode 21 through the electrode jacket 223, the heat of the tungsten electrode 21 can be transferred to the water-cooled jacket 31 through the spherical electrode rotator 222, further realizing the cooling of the tungsten electrode 21.

[0059] Specifically, the liquid medium can flow into the water-cooled jacket 31 through the liquid inlet pipe 32 via the liquid inlet 311, and the liquid medium in the water-cooled jacket 31 can be discharged through the liquid outlet pipe 33 via the liquid outlet 312. The liquid medium flowing through the water-cooled jacket 31 can take out the heat from the welding gun 100, thereby realizing the water-cooling function of the welding gun 100. The water-cooling efficiency is high, which can effectively prevent the temperature at the welding assembly 2 from being too high, and further extend the working duration of the welding gun 100.

[0060] It should be noted that the heat exchange at the water-cooled jacket 31 is not limited to the heat exchange with the spherical electrode rotator 222. The water-cooled jacket 31 can also exchange heat with other devices or components (such as the gas guide sleeve 41, etc.) arranged in the first cavity 111. At the same time, the liquid medium can be water or aqueous solution, etc., and the type of the liquid medium is not limited herein.

[0061] As Figure 1 shown, an avoidance structure adapted to avoid the spherical electrode rotator 222 is formed on the water-cooled jacket 31. The avoidance structure can be configured as an arc-shaped recess to prevent interference between the water-cooled jacket 31 and the spherical electrode rotator 222.

[0062] As Figure 1 shown, in some embodiments of the present application, the other end of the liquid inlet pipe 32 forms a liquid inlet interface 321, and the liquid inlet interface 321 is arranged on the outer side of the gun handle portion 12, so as to facilitate connecting the liquid inlet interface 321 with an external water source located outside the welding gun 100 to supply the liquid medium to the water-cooling assembly 3 through the external water source.

[0063] As Figure 1 shown, in some embodiments of the present application, the other end of the liquid outlet pipe 33 forms a liquid outlet interface 331, and the liquid outlet interface 331 is arranged on the outer side of the gun handle portion 12, so as to facilitate connecting the liquid outlet interface 331 with a liquid storage device located outside the welding gun 100 to recover the liquid medium discharged from the water-cooling assembly 3 through the liquid storage device.

[0064] Among them, the external water source and the liquid storage device can be integrally integrated in a water supply device, and the water supply device can recycle the liquid medium flowing through the water-cooling assembly 3 and can also supply the liquid medium to the water-cooling assembly 3.

[0065] Specifically, when the water-cooling component 3 is connected to the water supply device through the liquid inlet interface 321 and the liquid outlet interface 331, the water supply device can pump the liquid medium into the liquid inlet pipe 32 through the pump structure, and the liquid medium flowing through the water-cooling component 3 can flow back into the water supply device through the liquid outlet pipe 33, so as to realize the circulating transportation of the liquid medium in the water-cooling component 3.

[0066] It should be noted that a liquid flow channel can be formed in the water-cooling cavity. The liquid flow channel is used to define the flow path of the liquid medium in the water-cooling jacket 31, so that the liquid medium can flow unidirectionally from the liquid inlet 311 to the liquid outlet 312 through the liquid flow channel, improving the heat exchange efficiency of the liquid medium.

[0067] As Figure 1 shown, in some embodiments of the present application, the liquid inlet pipe 32 is connected to the driving motor 221, and the liquid inlet pipe 32 can be in heat exchange cooperation with the driving motor 221 to dissipate heat from the driving motor 221 through the liquid inlet pipe 32, avoiding the temperature of the driving motor 221 from being too high and helping to extend the working duration of the welding gun 100.

[0068] It can be understood that during the welding process of the welding gun 100, the driving motor 221 drives the spherical electrode rotator 222 to reciprocate within a preset range through the driving shaft 2211. When the driving motor 221 works, heat will be generated. Since the liquid inlet pipe 32 in the embodiment of the present application can be in heat exchange cooperation with the driving motor 221, the heat at the driving motor 221 can be taken away by the liquid medium flowing through the liquid inlet pipe 32, realizing the cooling and temperature reduction at the driving motor 221.

[0069] Among them, the heat exchange arrangement mode of the liquid inlet pipe 32 and the driving motor 221 can include: the liquid inlet pipe 32 is in fitting cooperation with the driving motor 221, the liquid inlet pipe 32 penetrates through the driving motor 221, etc., as long as the heat exchange between the liquid inlet pipe 32 and the driving motor 221 can be satisfied. Specifically, the liquid medium flows in through the liquid inlet interface 321 of the liquid inlet pipe 32 and flows into the water-cooling jacket 31 after flowing through the liquid inlet pipe 32. During the process of the liquid medium flowing through the liquid inlet pipe 32, the heat at the driving motor 221 can be taken away to realize the cooling and temperature reduction of the driving motor 221.

[0070] As Figure 1As shown, in some embodiments of the present application, the shielding gas assembly 4 includes a gas guiding sleeve 41 and an inlet pipe 42. The gas guiding sleeve 41 is arranged in the first chamber 111, and the gas guiding sleeve 41 is provided with an air outlet 411 and an air inlet 412. The air outlet 411 is used for the shielding gas in the gas guiding sleeve 41 to be discharged towards the welding joint 101. The shielding gas can be discharged from the welding joint 101 to the outside of the gun body 1 to perform gas protection on the weld. The inlet pipe 42 is arranged at the second chamber 121, and one end of the inlet pipe 42 is communicated with the air inlet 412. The air inlet interface 421 of the inlet pipe 42 is arranged outside the gun handle 12, so as to facilitate connecting the inlet pipe 42 with the gas source outside the gun body 1.

[0071] Among them, the shielding gas assembly 4 is used to transport the shielding gas to the welding joint 101, so that the shielding gas discharged from the welding joint 101 protects the weld, which helps to improve the weld quality.

[0072] It can be understood that during the welding process, the welding gun 100 can continuously output the shielding gas outward through the welding joint 101 to prevent oxidation at the weld. The air inlet interface 421 is used to connect with the gas source to ensure the output effect of the shielding gas of the welding gun 100. Among them, the gas source can be configured as a gas storage tank, and the gas storage tank stores the shielding gas.

[0073] In some embodiments of the present application, the gas guiding sleeve 41 is configured to surround the tungsten electrode 21 in the circumferential direction, and the gas guiding sleeve 41 is formed with an annularly arranged air outlet 411, so that the shielding gas can be evenly transported to the first chamber 111 through the air outlet 411, improving the outward transportation effect of the shielding gas.

[0074] As Figure 1 As shown, in a further embodiment of the present application, the shielding gas assembly 4 further includes a shielding gas regulator 43. The shielding gas regulator 43 is connected to the inlet pipe 42, and the shielding gas regulator 43 is used to adjust the flow rate of the shielding gas transported to the side of the gas guiding sleeve 41, so as to be able to control the output amount of the shielding gas according to the welding requirements to reduce the waste of the shielding gas.

[0075] Among them, the shielding gas regulator 43 can be specifically configured as a regulating valve. The regulating valve can adjust the gas flow rate in the inlet pipe 42, thereby adjusting the flow rate of the shielding gas transported to the gas guiding sleeve 41. It can be understood that when the regulating valve is in the closed state, the inlet pipe 42 cannot transport the shielding gas to the gas guiding sleeve 41; when the regulating valve is in the open state, by controlling the opening degree of the regulating valve, the gas flow rate transported from the inlet pipe 42 to the gas guiding sleeve 41 can be controlled to realize the adjustment of the output amount of the shielding gas.

[0076] As Figure 1As shown, the gun main body 11 is provided with a ceramic nozzle 113, and the above-mentioned welding interface 101 is defined at the ceramic nozzle 113.

[0077] As Figure 1 shown, the gun handle part 12 is provided with a control switch 122. The control switch 122 is used to control the energization state of the tungsten electrode 21. An operator can energize the tungsten electrode 21 by pressing the control switch 122 to achieve the arc starting operation of the welding gun 100.

[0078] The welding gun 100 according to the embodiment of the present application has at least the following advantages compared with the prior art: (1) In the welding gun 100, the driving shaft 2211 of the driving motor 221 can drive the spherical electrode rotator 222 to rotate around the first axis, so as to drive the tungsten electrode 21 to swing pendulum around the first axis through the spherical electrode rotator 222, thereby simplifying the operation difficulty when the operator holds the welding gun 100 for welding, simplifying the operation and reducing the labor intensity of the welding work; (2) The swing amplitude of the tungsten electrode 21 relative to the gun body 1 can be adjusted within a certain range to meet the requirements of the welding path, and the swing frequency of the tungsten electrode 21 relative to the gun body 1 can be adjusted within a certain range to meet the control requirements of the welding process; (3) The welding gun 100 has high use flexibility. It can be held by an operator to meet the use requirements of the operator's manual operation. It can also be applied to welding equipment (such as: clamped by an automatic clamping mechanism), and the welding gun 100 is driven by the welding equipment to achieve the welding function.

[0079] Refer to Figures 1 - 4 Describe the usage method of the welding gun 100 according to the embodiment of the present application: In the first step, first select the corresponding welding process parameters according to the specifications and groove conditions of the workpiece to be welded, so as to configure the swing amplitude and swing frequency of the tungsten electrode 21 in the welding gun 100. Specifically, it can be adjusted through the swing amplitude regulator 23 and the motor adjustment knob 24; In the second step, further adjust the shielding gas assembly 4 and the water cooling assembly 3 to ensure an appropriate amount of shielding gas and sufficient cooling water flow, thereby improving the gas shielding effect and cooling effect of the welding gun 100. Specifically, it can be adjusted through the shielding gas regulator 43 and the pump body connected to the liquid inlet pipe 32; In the third step, the operator holds it by hand or is clamped by an automatic clamping mechanism, and the tungsten electrode 21 is brought close to the weld area to be welded; In the fourth step, arc starting is achieved by manual control of the control switch by the operator or through software control. After the arc is stable, the welding wire is fed in; In step five, the welding gun 100 is driven to move, and the moving direction of the welding gun 100 is parallel to the weld along the weld area to be welded. During the welding process of the same weld bead, there is no need to change the position of the welding gun 100.

[0080] It should be noted that the feeding method of the welding wire can be set according to the welding requirements and will not be specifically limited here.

[0081] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0082] In the description of the present application, the "first feature" and "second feature" may include one or more of such features.

[0083] In the description of the present application, the meaning of "a plurality" is two or more.

[0084] In the description of the present application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0085] In the description of the present application, the first feature being "above", "above" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal level than the second feature.

[0086] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0087] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A welding gun, characterized in that, Comprising: A gun body (1), the gun body (1) is formed with a welding port (101), and the gun body (1) has a handle portion (12) that can be held by hand; A welding assembly (2), the welding assembly (2) includes a tungsten electrode (21) and a driving portion (22), at least part of the tungsten electrode (21) extends out of the gun body (1) from the welding port (101), the driving portion (22) is connected to the tungsten electrode (21) and is used to drive the tungsten electrode (21) to swing around a first axis; A water cooling assembly (3), the water cooling assembly (3) is arranged in the gun body (1) and sleeved on the driving portion (22), the water cooling assembly (3) is used to cool the welding assembly (2); A shielding gas assembly (4), the shielding gas assembly (4) is arranged in the gun body (1) and located on the circumferential outer side of the tungsten electrode (21), the shielding gas assembly (4) is used to convey shielding gas to the welding port (101).

2. The soldering gun according to claim 1, wherein, The gun body (1) further includes a gun main body portion (11), the gun main body portion (11) is formed with a first cavity (111) extending in a first direction, and the welding port (101) is formed at one end of the gun main body portion (11) in the first direction, the handle portion (12) is connected to the gun main body portion (11) and is formed with a second cavity (121) extending in a second direction.

3. The soldering gun according to claim 2, characterized in that, The driving portion (22) includes: A driving motor (221), the driving motor (221) is arranged in the second cavity (121), and the driving motor (221) has a driving shaft adapted to rotate around the first axis, at least part of the driving shaft extends into the first cavity (111); A spherical electrode rotator (222), the spherical electrode rotator (222) is fixedly connected to the driving shaft, and the spherical electrode rotator (222) is provided with an electrode collet (223) for mounting the tungsten electrode (21).

4. The welding gun according to claim 3, characterized in that, The first axis is arranged parallel to the second direction; And / or, the electrode collet (223) is used to fix the tungsten electrode (21) on the spherical electrode rotator (222) and set the angle between the tungsten electrode (21) and the first axis to be an obtuse angle.

5. The soldering gun according to claim 3, characterized in that, The welding assembly (2) further includes a swing amplitude regulator (23), the swing amplitude regulator (23) is arranged on the gun main body portion (11) and is used for limiting cooperation with the spherical electrode rotator (222) to limit the swing amplitude of the tungsten electrode (21); And / or, the driving portion (22) further includes a motor adjustment knob (24), the motor adjustment knob (24) is arranged on the handle portion (12), and the motor adjustment knob (24) is connected to the driving motor (221) and is used to adjust the output power of the driving motor (221) to adjust the swing frequency of the tungsten electrode (21).

6. The soldering gun according to claim 3, characterized in that The water cooling assembly (3) includes: A water cooling jacket (31), the water cooling jacket (31) is arranged on the spherical electrode rotator (222), the water cooling jacket (31) forms a water cooling cavity and is provided with a liquid inlet and a liquid outlet communicated with the water cooling cavity; A liquid inlet pipe (32), the liquid inlet pipe (32) is arranged in the second chamber (121), and one end of the liquid inlet pipe (32) is communicated with the liquid inlet; A liquid outlet pipe (33), the liquid outlet pipe (33) is arranged in the second chamber (121), and one end of the liquid outlet pipe (33) is communicated with the liquid outlet.

7. The soldering gun according to claim 6, characterized in that, The other end of the liquid inlet pipe (32) forms a liquid inlet interface (321), and the liquid inlet interface (321) is arranged outside the gun handle part (12); And / or, the other end of the liquid outlet pipe (33) forms a liquid outlet interface (331), and the liquid outlet interface (331) is arranged outside the gun handle part (12).

8. The welding torch according to claim 6, characterized in that, The liquid inlet pipe (32) is connected to the drive motor (221) and is used for heat exchange cooperation with the drive motor (221).

9. The welding torch according to claim 2, characterized in that, The protective gas assembly (4) includes: A gas guide sleeve (41), the gas guide sleeve (41) is arranged in the first chamber (111), and the gas guide sleeve (41) is provided with an air outlet and an air inlet, and the air outlet is used for discharging the protective gas in the gas guide sleeve (41) to the welding joint (101); An air inlet pipe (42), the air inlet pipe (42) is arranged in the second chamber (121), and one end of the air inlet pipe (42) is communicated with the air inlet, and the air inlet interface of the air inlet pipe (42) is arranged outside the gun handle part (12).

10. The welding gun according to claim 9, characterized in that, The protective gas assembly (4) further includes a protective gas regulator (43), the protective gas regulator (43) is connected to the air inlet pipe (42) and is used for adjusting the flow rate of the protective gas conveyed to the side of the gas guide sleeve (41).

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