welding gun

Abstract

The present application relates to the technical field of welding equipment and discloses a welding gun, comprising: a gun body having a welding port formed therein and a hand-held grip; a welding assembly comprising a tungsten electrode and a drive unit, at least a portion of which extends outward from the welding port, the drive unit being connected to the tungsten electrode and configured to drive the tungsten electrode to swing about a first axis; a water-cooling assembly disposed within the gun body and overlying the drive unit, the water-cooling assembly being configured to cool the welding assembly; and a shielding gas assembly disposed within the gun body and positioned circumferentially outwardly of the tungsten electrode, the shielding gas assembly being configured to deliver shielding gas to the welding port. This allows for pendulum motion of the tungsten electrode, assisting the operator in manual welding to produce aesthetically pleasing and high-quality welds and reducing the operator's labor intensity during manual welding. Furthermore, the excellent cooling effect of the welding gun can extend the continuous welding operation time of the welding gun and improve welding efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of welding equipment, and in particular to a welding gun. Background Art

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

[0003] In traditional argon arc welding, operators (e.g., welders) typically hold the welding torch in one hand and the welding wire in the other. This requires the torch to be swung left and right, using the porcelain nozzle as a fulcrum, causing the tungsten needle to swing back and forth across the groove. This requires the operator to maneuver the handle for extended periods of time, increasing labor intensity and introducing potential for human error, which compromises welding quality. Furthermore, the torch relies on air cooling, which is insufficient for extended welding operations.

[0004] In the related art, for automatic argon arc welding, a three-axis or multi-axis robotic arm is set in the welding equipment to achieve left and right swing of the welding gun. However, the welding gun is only suitable for automatic welding and cannot meet the switching between manual welding and automatic welding, which limits the application scenarios of the welding equipment. Summary of the Invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to provide a welding gun that can assist the user in welding and improve the controllability of the welding process, thereby improving the stability of the welding process and improving the welding quality.

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

[0007] In this application, a driving unit in the welding gun can drive the tungsten electrode to swing about a first axis, thereby achieving a pendulum motion of the tungsten electrode, assisting the operator in manual welding to form an aesthetically pleasing and high-quality weld, while also reducing the operator's labor intensity during manual welding. Furthermore, the welding assembly can be water-cooled by a water-cooling assembly, thereby improving the cooling effect at the welding gun, extending the continuous welding operation time of the welding gun and improving welding efficiency. The protector assembly can deliver a shielding gas (e.g., argon) to the welding port to enable argon arc welding.

[0008] Among them, the gun body has a gun handle for the operator to hold, which can meet the welding operation needs of the operator holding the welding gun, and the gun body can also be used in automatic welding equipment, so that the welding gun can meet the use requirements of various welding conditions and has good versatility.

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

[0010] According to some embodiments of the present application, the driving part includes: a driving motor, which is arranged in the second cavity and has a driving shaft suitable for rotating around the first axis, and at least part of the driving shaft extends into the first cavity; a spherical electrode rotator, which is fixedly connected to the driving shaft and is provided with an electrode sleeve for mounting 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 jacket 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, which is provided on the gun body and is used to cooperate 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, which is provided on the gun handle, and the motor adjustment knob is connected to the drive motor and is used to adjust the output power of the drive 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, which is arranged on the spherical electrode rotator, the water cooling jacket forms a water cooling cavity and is provided with a liquid inlet and a liquid outlet connected to the water cooling cavity; a liquid inlet pipe, which is arranged in the second cavity, and one end of the liquid inlet pipe is connected to the liquid inlet; a liquid outlet pipe, which is arranged in the second cavity, and one end of the liquid outlet pipe is connected to 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 arranged on the outside of the gun handle; and / or, the other end of the liquid outlet pipe forms a liquid outlet interface, and the liquid outlet interface is arranged on the outside of the gun handle; and / or, the liquid inlet pipe is connected to the drive motor and is used to cooperate with the drive motor for heat exchange.

[0015] According to some embodiments of the present application, the protective gas assembly includes: a gas guide sleeve, which is arranged in the first cavity and is provided with an air outlet and an air inlet, and the air outlet is used to supply the protective gas in the gas guide sleeve to the welding port; an air inlet pipe, which is arranged in the second cavity, and one end of the air inlet pipe is connected to the air inlet, and the air inlet interface of the air inlet pipe is arranged on the outside of the gun handle.

[0016] According to some embodiments of the present application, the shielding gas assembly further includes a shielding gas regulator, which is connected to the air inlet pipe and is used to adjust the flow rate of shielding gas delivered to one side of the air guide sleeve.

[0017] The welding gun according to the embodiment of the present application has at least the following advantages compared to the prior art:

[0018] (1) In a welding gun, a driving shaft of a driving motor can be used to drive a spherical electrode rotator to rotate about a first axis, so that the spherical electrode rotator can drive a tungsten electrode to swing like a pendulum about the first axis, thereby simplifying the operation difficulty of an operator holding a welding gun for welding, simplifying the operation, and reducing the labor intensity of welding work;

[0019] (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 welding traverse, 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;

[0020] (3) The welding gun is highly flexible to use. It can be held by the operator to meet the operator's manual operation needs. It can also be used in welding equipment (such as: clamped by an automatic clamping mechanism) to drive the welding gun through the welding equipment to achieve the welding function.

[0021] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a schematic structural diagram of a welding gun according to one embodiment of the present application;

[0024] Figure 2 This is a partial schematic diagram of a welding gun according to an embodiment of the present application. Figure 1 ;

[0025] Figure 3 This is a partial schematic diagram of a welding gun according to an embodiment of the present application. Figure 2 ;

[0026] Figure 4 It is a schematic diagram of the use process of a welding gun according to one embodiment of the present application.

[0027] Reference numerals:

[0028] Welding Gun 100:

[0029] Gun body 1; welding port 101; gun body 11; first cavity 111; tail end cover 112; ceramic nozzle 113; gun handle 12; second cavity 121; control switch 122;

[0030] Welding assembly 2; tungsten electrode 21; driving unit 22; driving motor 221; driving shaft 2211; spherical electrode rotator 222; electrode jacket 223; swing amplitude adjuster 23; motor adjustment knob 24;

[0031] 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;

[0032] Shielding gas assembly 4; air guide sleeve 41; air outlet 411; air inlet 412; air inlet pipe 42; air inlet interface 421; shielding gas regulator 43. DETAILED DESCRIPTION

[0033] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0034] Reference below Figures 1-4 A welding gun 100 according to an embodiment of the present application is described.

[0035] like Figure 1 As shown, a 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, welding gun 100 performs argon arc welding, a welding technique that uses argon as a shielding gas. High current is used to melt the welding material into a liquid state on the substrate being welded, forming a molten pool, thereby achieving a metallurgical bond between the metal being welded and the welding material. Argon shielding gas can be passed around the arc welding area to isolate air from the weld zone and prevent oxidation of the weld zone.

[0036] Combine Figure 1 and Figure 3 As shown, a welding port 101 is provided on the gun body 1, and the gun body 1 has a gun handle 12 that can be held by hand, the welding assembly 2 includes a tungsten electrode 21 and a driving portion 22, and at least part of the tungsten electrode 21 extends from the welding port 101 to the outside of the gun body 1, and the driving portion 22 is connected to the tungsten electrode 21. The driving portion 22 is used to drive the tungsten electrode 21 to swing around the first axis to achieve reciprocating swing of the tungsten electrode 21 at the welding port 101, thereby driving the molten iron in the molten pool to separate to both sides of the groove, forming a fish-scale weld, ensuring the beauty and quality of the weld formed by the welding gun 100.

[0037] like Figure 1 As shown, the water cooling assembly 3 is arranged in the gun body 1, and the water cooling assembly 3 is arranged on the driving part 22. The water cooling assembly 3 can be used to cool the welding assembly 2 to prevent the temperature of the welding gun 100 at the welding assembly 2 from being too high, which helps to extend the working time of the welding gun.

[0038] like Figure 1 As shown, the shielding gas assembly 4 is disposed in the gun body 1 , and the shielding gas assembly 4 is located circumferentially outside the tungsten electrode 21 . The shielding gas assembly 4 is used to deliver shielding gas to the welding port 101 .

[0039] It is understood that the shielding gas assembly 4 is located in a position suitable for avoiding the tungsten electrode 21, and the shielding gas assembly 4 can deliver shielding gas to the welding port 101 to achieve gas protection in 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 welding quality. Among them, the shielding gas is preferably argon.

[0040] It should be noted that argon arc welding can be used in welding critical components such as pressure vessels, ships, and aerospace. In traditional argon arc welding, the operator (e.g., welder) typically holds the welding torch in one hand and the welding wire in the other. During welding, the torch requires swinging the handle left and right, using the porcelain nozzle as a fulcrum, to cause the tungsten needle to swing back and forth across the groove. This requires the operator to maneuver the handle for extended periods of time, increasing labor intensity and introducing potential for human error, which is detrimental to welding quality control. Furthermore, the torch relies on air cooling, which cannot meet the demands of prolonged welding operations.

[0041] In the related art, for automatic argon arc welding, a three-axis or multi-axis robotic arm is set in the welding equipment to achieve left and right swing of the welding gun. However, the welding gun is only suitable for automatic welding and cannot meet the switching between manual welding and automatic welding, which limits the application scenarios of the welding equipment.

[0042] In this application, the drive unit 22 in the welding gun 100 can drive the tungsten electrode 21 to swing about a first axis, thereby achieving a pendulum motion of the tungsten electrode 21, assisting the operator in manual welding to form an aesthetically pleasing and high-quality weld, while also reducing the operator's labor intensity during manual welding. Furthermore, the welding assembly 2 can be water-cooled by the water-cooling assembly 3, thereby improving the cooling effect at the welding gun 100, extending the continuous welding operation time of the welding gun 100 and improving welding efficiency. The protector assembly can deliver a shielding gas (e.g., argon) to the welding port 101 to enable argon arc welding by the welding gun 100.

[0043] Among them, the gun body 1 has a gun handle 12 for the operator to hold, which can meet the welding operation needs of the operator holding the welding gun 100, and the gun body 1 can also be used in automatic welding equipment, so that the welding gun 100 can meet the use requirements of various welding conditions and has good versatility.

[0044] like Figure 1 As shown, in a further embodiment of the present application, the gun body 1 includes a gun body portion 11 and a gun handle portion 12, the gun body portion 11 is formed with a first cavity 111 extending along a first direction, and the welding port 101 is formed at one end of the gun body portion 11 in the first direction, the gun handle portion 12 is connected to the gun body portion 11 and is formed with a second cavity 121 extending along a second direction.

[0045] Among them, the first cavity 111 and the second cavity 121 together constitute the arrangement space of the welding gun 100 for the welding component 2, the water cooling component 3 and the shielding gas component 4, thereby meeting the installation requirements of the welding component 2, the water cooling component 3 and the shielding gas component 4.

[0046] Reference Figure 1The connection position between the gun handle 12 and the gun body 11 is located on the side of the gun body 11 away from the welding port 101 in the first direction, so that the gun handle 12 is arranged at a position away from the welding port 101, which is convenient for the operator to hold.

[0047] like Figure 1 As shown, in some embodiments of the present application, the gun body 11 is provided with a tail end cover 112, which is arranged at the other end of the gun body 11 in the first direction. The tail end cover 112 is arranged opposite to the welding port 101 in the first direction. The end of the gun body 11 can be closed by the tail end cover 112, thereby avoiding exposure of the components arranged in the first cavity 111, so as to play a protective role.

[0048] like Figure 1 As shown, in some embodiments of the present application, the driving unit 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 suitable for rotating around a first axis, at least 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 to drive the spherical electrode rotator 222 to rotate synchronously through the driving shaft 2211.

[0049] Among them, the spherical electrode rotator 222 is provided with an electrode sleeve 223 for installing the tungsten pole 21. The electrode sleeve 223 can be clamped and matched with the tungsten pole 21 to connect the tungsten pole 21 with the spherical electrode rotator 222, so that the tungsten pole 21 can be driven to move by the spherical electrode rotator 222 to realize the swinging movement of the tungsten pole 21.

[0050] It should be noted that the electrode jacket 223 is used to fix the tungsten electrode 21 and conduct current, so that the tungsten electrode 21 is energized while being fixed by the electrode jacket 223, thereby ensuring that the tungsten electrode 21 remains stable at high temperatures and improving the reliability of the spherical electrode rotator 222 in driving the tungsten electrode 21 to swing.

[0051] Furthermore, the electrode jacket 223 has excellent electrical conductivity to reduce resistance losses and is resistant to high temperatures and corrosion, thereby extending the service life of the spherical electrode rotator 222. Furthermore, the electrode jacket 223 is wrapped with an insulating material to insulate the electrode jacket 223, preventing electric shock to operators and avoiding safety hazards caused by current leakage.

[0052] like Figure 1As shown, in some embodiments of the present application, the first axis is set parallel to the second direction, that is, the axial direction of the drive shaft 2211 is set parallel to the second direction, so that the drive shaft 2211 can be arranged along the extension direction of the second cavity 121, which can reduce the difficulty of arranging the motor in the second cavity 121.

[0053] 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 pole 21 fixed on the motor jacket 223 and the first axis is set to be an obtuse angle, so that the drive shaft 2211 extends obliquely from the connection with the spherical electrode rotator 222 to the side away from the welding port 101, which facilitates the arrangement of the drive motor 221 at a position suitable for avoiding the tungsten pole 21.

[0054] When the first axis is parallel to the second direction and the angle between the tungsten electrode 21 and the second direction is an obtuse angle, the gun body 1 can be constructed into a shape suitable for being handheld by an operator.

[0055] It can be understood that the gun handle portion 12 is used for the operator to hold, and the extension direction of the gun handle portion 12 (i.e., the second direction) is arranged parallel to the first axis. That is to say, the gun handle portion 12 extends from the connection with the gun body portion 11 to the side away from the welding port 101, and space for the operator to hold can be reserved at the gun handle portion 12, making it convenient for the operator to hold the welding gun 100 through the gun handle portion 12.

[0056] like Figure 1 As shown, in some embodiments of the present application, the welding assembly 2 further includes a swing amplitude adjuster 23, which is disposed on the gun body 11 and is configured to cooperate with the spherical electrode rotator 222 to limit the swing amplitude of the tungsten electrode 21. Thus, during welding with the welding gun 100, the swing amplitude adjuster 23 can be used to control the swing amplitude of the tungsten electrode 21 according to welding requirements.

[0057] In conventional argon arc welding, operators need to maneuver the welding gun to create a fish-scale weld. The tungsten electrode 21 of the welding gun 100 in the present embodiment can swing about a first axis, thereby reducing the difficulty of maneuvering the welding gun 100 during welding and achieving an aesthetically pleasing, high-quality fish-scale weld.

[0058] It is understood that the size of the weld formed by the tungsten electrode 21 during welding is related to the swing amplitude of the tungsten electrode 21. When the tungsten electrode 21 is in effective contact with the molten iron pool, as the swing amplitude of the tungsten electrode 21 increases, the width of the weld formed also increases; as the swing amplitude of the tungsten electrode 21 decreases, the width of the weld formed also decreases. Therefore, the swing amplitude of the tungsten electrode 21 can be set according to the weld requirements of the weld, which includes the welding path requirements.

[0059] Reference Figure 1 The swing amplitude regulator 23 is provided 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 .

[0060] 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.

[0061] In some optional embodiments, a limit portion is provided on the spherical electrode rotator 222, and a limit fitting portion is provided on the swing amplitude adjuster 23. The swing amplitude adjuster 23 is exposed from the gun body 11 to be positioned in a convenient location for an operator. For example, a paddle is exposed from the upper portion of the gun body, allowing the operator to adjust the position of the limit fitting portion of the swing amplitude adjuster 23 relative to the gun body 11 by moving the paddle. The limit fitting portion cooperates with the limit portion to limit the range of motion of the spherical electrode rotator 222.

[0062] In some specific embodiments of the present application, the limiting portion is configured as a limiting protrusion, and the limiting mating portion is configured as a limiting rib. The limiting rib is provided on the movement path of the limiting protrusion, and the limiting rib can abut and cooperate with the limiting protrusion to limit the rotation range of the spherical electrode rotator 222. It should be noted that the specific structure and limiting mating method of the limiting portion and the limiting mating portion are not limited to this, and can also be designed according to the requirements of adjusting the swing amplitude of the tungsten electrode 21.

[0063] In other embodiments of the present application, the swing amplitude adjuster 23 is configured to cooperate with the water-cooling jacket 31. The swing amplitude adjuster 23 drives the water-cooling jacket 31 to engage with the spherical electrode rotator 222, thereby limiting the rotation range of the spherical electrode rotator 222. The spherical electrode rotator 222 is provided with a limiting edge that can cooperate with the water-cooling jacket 31 for limiting position.

[0064] like Figure 1As shown, in some embodiments of the present application, the driving unit 22 further includes a motor adjustment knob 24, which is provided 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 electrode 21.

[0065] Reference Figure 1 As shown, the motor adjustment knob 24 is provided on the gun grip 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 to adjust the motion mode of the drive motor 221 driving the spherical electrode rotator 222, thereby driving the tungsten electrode 21 to swing at different swing frequencies.

[0066] It will be appreciated that when the output power of the drive motor 221 is high, the drive shaft 2211 can drive the tungsten electrode 21 to oscillate rapidly via 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 oscillate slowly via the spherical electrode rotator 222. The terms "rapid oscillation" and "slow oscillation" are relative. For example, a frequency of 30 reciprocating oscillations of the tungsten electrode 21 per minute is considered fast oscillation, while a frequency of 10 reciprocating oscillations of the tungsten electrode 21 per minute is considered slow oscillation. Thus, the oscillation frequency of the tungsten electrode 21 can be adjusted according to welding requirements (e.g., weldment specifications, groove conditions, etc.) using the motor adjustment knob 24. This allows the welding gun 100 to achieve a variety of welding methods, enhances the flexibility of the welding gun 100, and enables the welding gun 100 to meet the control requirements of the welding process.

[0067] like Figure 1 As 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 .

[0068] Among them, the water-cooling jacket 31 is arranged 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 connected to 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 connected to 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 connected to the liquid outlet 312. The liquid medium in the water-cooling cavity can be discharged through the liquid outlet pipe 33, thereby realizing the circulation of the liquid medium in the water-cooling component 3 and improving the cooling performance of the water-cooling component 3.

[0069] Reference Figure 1It can be understood that the water-cooling jacket 31 is arranged in the first cavity 111 and is located 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, thereby cooling the spherical electrode rotator 222, avoiding excessive temperature at the welding assembly 2, and helping to extend the working time of the welding gun 100.

[0070] It is understandable 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 cooling jacket 31 through the spherical electrode rotator 222 , thereby further cooling the tungsten electrode 21 .

[0071] Specifically, the liquid medium can flow into the water cooling jacket 31 through the liquid inlet 311 via the liquid inlet pipe 32, and the liquid medium in the water cooling jacket 31 can be discharged through the liquid outlet 312 via the liquid outlet pipe 33. The liquid medium flowing through the water cooling jacket 31 can take heat out of the welding gun 100, thereby realizing the water cooling function of the welding gun 100. The water cooling has high efficiency and can effectively prevent the temperature at the welding component 2 from being too high, thereby extending the working time of the welding gun 100.

[0072] It should be noted that the water-cooling jacket 31 is not limited to exchanging heat with the spherical electrode rotator 222. The water-cooling jacket 31 can also exchange heat with other devices or components (such as the gas guide sleeve 41) arranged in the first chamber 111. Furthermore, the liquid medium can be water or an aqueous solution, and the type of liquid medium is not limited herein.

[0073] like Figure 1 As shown, a relief structure suitable for avoiding the spherical electrode rotator 222 is formed on the water cooling jacket 31 . The relief structure can be configured as an arc-shaped recess to prevent interference between the water cooling jacket 31 and the spherical electrode rotator 222 .

[0074] like Figure 1 As 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 outside of the gun handle 12, so as to facilitate connecting the liquid inlet interface 321 to an external water source located outside the welding gun 100, so as to supply liquid medium to the water cooling component 3 through the external water source.

[0075] like Figure 1 As 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 outside of the gun handle 12, so as to facilitate connecting the liquid outlet interface 331 to a liquid storage device located outside the welding gun 100, so as to recover the liquid medium discharged through the water cooling assembly 3 through the liquid storage device.

[0076] The external water source and the liquid storage device can be integrated into the water supply equipment. The water supply equipment can recover the liquid medium flowing through the water-cooling component 3 and can also supply the liquid medium to the water-cooling component 3.

[0077] Specifically, when the water cooling component 3 is connected to the water supply equipment through the liquid inlet interface 321 and the liquid outlet interface 331, the water supply equipment 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 to the water supply equipment through the liquid outlet pipe 33, thereby realizing the circulation and transportation of the liquid medium in the water cooling component 3.

[0078] It should be noted that a liquid flow channel can be formed in the water-cooling chamber, and 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 through the liquid flow channel to the liquid outlet 312, thereby improving the heat exchange efficiency of the liquid medium.

[0079] like Figure 1 As shown, in some embodiments of the present application, the liquid inlet pipe 32 is connected to the drive motor 221, and the liquid inlet pipe 32 can cooperate with the drive motor 221 for heat exchange, so as to dissipate heat from the drive motor 221 through the liquid inlet pipe 32, thereby avoiding excessive temperature of the drive motor 221 and helping to extend the working time of the welding gun 100.

[0080] It can be understood that during the welding process of the welding gun 100, the drive motor 221 drives the spherical electrode rotator 222 to reciprocate within a preset range through the drive shaft 2211. The drive motor 221 will generate heat when working. Since the liquid inlet pipe 32 in the embodiment of the present application can cooperate with the drive motor 221 for heat exchange, the heat at the drive motor 221 can be taken away by the liquid medium flowing through the liquid inlet pipe 32, thereby achieving cooling of the drive motor 221.

[0081] The heat exchange arrangement between the liquid inlet pipe 32 and the drive motor 221 may include: the liquid inlet pipe 32 fits snugly with the drive motor 221, the liquid inlet pipe 32 is passed through the drive motor 221, etc., as long as the heat exchange between the liquid inlet pipe 32 and the drive motor 221 is 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 drive motor 221 can be taken away, thereby cooling the drive motor 221.

[0082] like Figure 1As shown, in some embodiments of the present application, the shielding gas assembly 4 includes a gas guide sleeve 41 and an air inlet pipe 42. The gas guide sleeve 41 is arranged in the first cavity 111, and the gas guide sleeve 41 is provided with an air outlet 411 and an air inlet 412. The air outlet 411 is used to supply the shielding gas in the gas guide sleeve 41 to the welding port 101. The shielding gas can be discharged from the welding port 101 to the outside of the gun body 1 to perform gas protection on the weld. The air inlet pipe 42 is arranged in the second cavity 121, and one end of the air inlet pipe 42 is connected to the air inlet 412. The air inlet interface 421 of the air inlet pipe 42 is arranged on the outside of the gun handle 12, so as to facilitate the connection of the air inlet pipe 42 with the gas source outside the gun body 1.

[0083] The shielding gas assembly 4 is used to deliver shielding gas to the welding port 101 , so that the shielding gas discharged from the welding port 101 protects the weld, which helps to improve the quality of the weld.

[0084] It is understood that during the welding process, the welding gun 100 can continuously output shielding gas through the welding port 101 to prevent oxidation at the weld, and the gas inlet port 421 is used to connect to a gas source to ensure the shielding gas output effect of the welding gun 100. The gas source can be configured as a gas tank that stores shielding gas.

[0085] In some embodiments of the present application, the gas guide sleeve 41 is constructed to be arranged around the tungsten electrode 21 in the circumferential direction, and the gas guide sleeve 41 is formed with a gas outlet 411 arranged in a ring shape, so that the protective gas can be evenly delivered to the first cavity 111 through the gas outlet 411, thereby improving the outward delivery effect of the protective gas.

[0086] like Figure 1 As shown, in a further embodiment of the present application, the shielding gas assembly 4 also includes a shielding gas regulator 43, which is connected to the air inlet pipe 42, and the shielding gas regulator 43 is used to adjust the flow rate of shielding gas delivered to one side of the air guide sleeve 41, so that the output of the shielding gas can be controlled according to welding requirements to reduce the waste of shielding gas.

[0087] Specifically, the shielding gas regulator 43 can be configured as a regulating valve, which can adjust the gas flow in the air inlet pipe 42, thereby regulating the flow of shielding gas delivered to the air guide sleeve 41. It is understood that when the regulating valve is closed, the air inlet pipe 42 cannot deliver shielding gas to the air guide sleeve 41; when the regulating valve is open, the flow of gas delivered from the air inlet pipe 42 to the air guide sleeve 41 can be controlled by controlling the opening of the regulating valve, thereby adjusting the output of shielding gas.

[0088] like Figure 1As shown, the gun body 11 is provided with a ceramic nozzle 113 , and the ceramic nozzle 113 defines the aforementioned welding port 101 .

[0089] like Figure 1 As shown, the gun handle 12 is provided with a control switch 122 , which is used to control the power-on state of the tungsten electrode 21 . The operator can press the control switch 122 to energize the tungsten electrode 21 to achieve arc starting operation of the welding gun 100 .

[0090] The welding gun 100 according to the embodiment of the present application has at least the following advantages compared to the prior art:

[0091] (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 that the spherical electrode rotator 222 can drive the tungsten electrode 21 to swing around the first axis like a pendulum, thereby simplifying the operation difficulty of the operator when holding the welding gun 100 for welding, simplifying the operation, and reducing the labor intensity of the welding work;

[0092] (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 welding, 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;

[0093] (3) The welding gun 100 is highly flexible to use. It can be held by an operator to meet the operator's manual operation needs. It can also be used in welding equipment (e.g., clamped by an automatic clamping mechanism) to drive the welding gun 100 through the welding equipment to achieve the welding function.

[0094] Reference Figures 1-4 The following describes a method for using the welding gun 100 according to an embodiment of the present application:

[0095] In step 1, first, according to the specifications and groove conditions of the welded parts, the corresponding welding process parameters are selected to configure the swing amplitude and swing frequency of the tungsten electrode 21 in the welding gun 100. The swing amplitude regulator 23 and the motor adjustment knob 24 can be used to adjust the swing amplitude and swing frequency.

[0096] In step 2, the shielding gas assembly 4 and the water cooling assembly 3 are further adjusted 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, the adjustment can be performed through the shielding gas regulator 43 and the pump body connected to the liquid inlet pipe 32.

[0097] In step three, the operator holds the tungsten electrode 21 by hand or by an automatic clamping mechanism, and brings the tungsten electrode 21 close to the weld area;

[0098] In step 4, the arc is started by the operator manually controlling the control switch or by software control, and the welding wire is fed in after the arc is stabilized;

[0099] In step five, the welding gun 100 is driven to move, and the movement direction of the welding gun 100 is parallel to the weld seam along the weld area to be welded. The position of the welding gun 100 does not need to be changed during the welding process of the same weld bead.

[0100] It should be noted that the feeding method of the welding wire can be set according to the welding requirements and is not specifically limited here.

[0101] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0102] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0103] In the description of this application, “plurality” means two or more.

[0104] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0105] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0106] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0107] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A welding gun, characterized in that: include: A gun body (1), wherein the gun body (1) is formed with a welding port (101), and the gun body (1) has a gun handle portion (12) that can be used for hand-holding, the gun body (1) further comprising a gun main body portion (11), the gun main body portion (11) being formed with a first cavity (111) extending along a first direction, and the welding port (101) being formed at one end of the gun main body portion (11) in the first direction, the gun handle portion (12) being connected to the gun main body portion (11) and forming a second cavity (121) extending along a second direction; A welding assembly (2), the welding assembly (2) comprising a tungsten electrode (21) and a driving portion (22), at least a portion of the tungsten electrode (21) extending from the welding port (101) to the outside of the gun body (1), the driving portion (22) being connected to the tungsten electrode (21) and being used to drive the tungsten electrode (21) to swing around a first axis, the driving portion (22) comprising: a driving motor (221) and a spherical electrode rotator (222), the driving motor (221) being disposed in the second cavity (121), and the driving motor (221) having a driving shaft adapted to rotate around the first axis, at least a portion of the driving shaft extending into the first cavity (111), the spherical electrode rotator (222) being fixedly connected to the driving shaft, and the spherical electrode rotator (222) being provided with an electrode jacket (223) for mounting the tungsten electrode (21); A water cooling assembly (3), the water cooling assembly (3) being arranged in the gun body (1) and sleeved on the driving portion (22), the water cooling assembly (3) being used to cool the welding assembly (2); a shielding gas assembly (4), the shielding gas assembly (4) being arranged in the gun body (1) and located on the circumferential outside of the tungsten electrode (21), the shielding gas assembly (4) being used to deliver shielding gas to the welding port (101); The first axis is arranged parallel to the second direction; the electrode jacket (223) is used to fix the tungsten electrode (21) on the spherical electrode rotator (222), and to arrange the angle between the tungsten electrode (21) and the first axis to be an obtuse angle.

2. The welding gun according to claim 1, characterized in that The welding assembly (2) further includes a swing amplitude regulator (23), which is provided on the gun body (11) and is used to cooperate 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 provided on the gun grip 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 oscillation frequency of the tungsten electrode (21).

3. The welding gun according to claim 1, characterized in that The water cooling component (3) comprises: a water-cooling jacket (31), the water-cooling jacket (31) being provided on the spherical electrode rotator (222), the water-cooling jacket (31) 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 (32), the liquid inlet pipe (32) being provided in the second cavity (121), and one end of the liquid inlet pipe (32) being in communication with the liquid inlet; A liquid outlet pipe (33), the liquid outlet pipe (33) is provided in the second cavity (121), and one end of the liquid outlet pipe (33) is in communication with the liquid outlet.

4. The welding gun according to claim 3, 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 on the outside of the gun handle (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 provided on the outside of the gun handle (12).

5. The welding gun according to claim 4, characterized in that The liquid inlet pipe (32) is connected to the drive motor (221) and is used for heat exchange with the drive motor (221).

6. The welding gun according to claim 1, characterized in that The protective gas component (4) comprises: an air guide sleeve (41), the air guide sleeve (41) being disposed in the first cavity (111), and the air guide sleeve (41) being provided with an air outlet and an air inlet, the air outlet being used for discharging the protective gas in the air guide sleeve (41) toward the welding port (101); An air intake pipe (42), the air intake pipe (42) is arranged in the second cavity (121), one end of the air intake pipe (42) is connected to the air inlet, and the air intake interface of the air intake pipe (42) is arranged on the outside of the gun handle (12).

7. The welding gun according to claim 6, characterized in that The shielding gas assembly (4) further includes a shielding gas regulator (43), which is connected to the air inlet pipe (42) and is used to regulate the flow of shielding gas delivered to one side of the air guide sleeve (41).

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