Cooling water path structure for replacing electrode cap of industrial robot resistance welding gun

Abstract

The invention relates to the field of resistance welding guns, and discloses a cooling water path structure for replacing an electrode cap of an industrial robot resistance welding gun, the cooling water path structure comprises an electrode welding gun, the electrode cap and a water pumping device, the electrode welding gun is detachably connected with the electrode cap, the electrode welding gun is connected with a water inlet pipe and a water outlet pipe, the water outlet pipe is connected to the water pumping device, and the water pumping device is connected with the electrode cap. The water inlet pipe is connected with a water stopping mechanism, the water stopping mechanism is arranged close to the motor welding gun, the water stopping mechanism is rotationally connected to the water inlet pipe and can actively open or close the water inlet pipe according to the water pressure in the water inlet pipe, and water or cooling water is used for exchanging heat with an electrode cap to achieve cooling. More stable temperature control can be provided, heat accumulation is reduced, the service life of the welding gun and the electrode cap can be greatly prolonged, and the welding quality of the welding gun and the electrode cap can be greatly improved; by arranging the water pumping device, cooling water can be prevented from overflowing, and water can be prevented from being in contact with an electrical part; and unnecessary trouble and pollution caused by overflow of water are avoided.

Description

Technical Field

[0001] The present invention relates to the field of resistance welding guns, and particularly to a cooling water path structure for replacing electrode caps of an industrial robot resistance welding gun. Background Art

[0002] During the welding process, the electrode cap and the electrode welding gun will be exposed to extremely high temperatures in a short period of time. Especially under the conditions of high current, high voltage, and long-term continuous welding, the temperatures of the welding gun and the electrode cap will rise sharply. Without effective cooling measures, these high temperatures will cause melting, oxidation, or damage to the electrode cap material, thereby affecting the welding quality and even possibly causing malfunctions or premature damage to the electrode welding gun.

[0003] As the main method for cooling the welding gun and the electrode cap, the water cooling system has strong heat dissipation ability and can effectively take away the heat of the electrode welding gun and the electrode cap quickly, keeping them within a safe temperature range; while applying the water cooling system, the inside of the electrode welding gun and the electrode cap will also be filled with the cooling water of the water cooling system. Also, because the electrode cap is often subjected to high temperatures, friction, and current impacts during use, its surface will gradually wear, and even melting, oxidation, etc. will occur. When the electrode cap needs to be replaced, since there is still cooling water remaining in the pipelines inside the electrode welding gun and the electrode cap, if there is no effective drainage design or sealing structure, the cooling water will overflow, causing unnecessary waste and environmental pollution;

[0004] Although the prior art can pump out the cooling water inside the electrode welding gun and the electrode cap by adding a water pump, considering that even when the water supply to the water inlet pipe connected to the electrode welding gun stops, there will still be cooling water remaining in the pipeline of the water inlet pipe, and the suction capacity of the water pump has certain limitations and cannot completely pump out all the water in the water inlet pipe. Therefore, a water stop mechanism is mostly set on the water inlet pipe. First, the water stop mechanism is used to block the cooling water from entering the electrode welding gun and the electrode cap, and then the water pump is used to pump out the cooling water inside the electrode welding gun and the electrode cap. The common water stop mechanism is an electromagnetic valve. However, when the electromagnetic valve is closed, it is equivalent to forming a closed space. If the water pump starts to operate, the pressure inside the closed space will gradually decrease. Although the water is pumped out, due to the space being sealed, the water flow will slow down or even stop after the internal pressure drops to a certain extent. Therefore, it is necessary to improve the existing water stop mechanism. Summary of the Invention

[0005] The purpose of this application is to provide a cooling water path structure for replacing electrode caps of an industrial robot resistance welding gun to solve the problem that the cooling water inside the electrode welding gun and the electrode cap is prone to overflow when replacing the electrode cap of the existing electrode welding gun. The specific technical solutions are as follows:

[0006] A cooling water channel structure for replacing the electrode cap of an industrial robot resistance welding gun, including an electrode welding gun, the electrode welding gun is connected with a water inlet pipe and a water outlet pipe, the water outlet pipe is connected with a water pumping device, the water inlet pipe is connected with a water stop mechanism embedded in the water inlet pipe, the water stop mechanism includes a cover plate rotatably connected in the water inlet pipe, the water inlet pipe is opened or closed by flipping the cover plate, the water stop mechanism is provided with an air inlet, a piston mechanism is slidably connected in the air inlet, a crank mechanism is connected between the cover plate and the piston mechanism, and the opening or closing of the air inlet is controlled by driving the piston mechanism by flipping the cover plate.

[0007] As an improvement of the above technical solution, the water stop mechanism further includes a spring, a groove is provided on the inner wall of the water inlet pipe, the cover plate is arranged in the groove and covers the internal channel of the water inlet pipe, one end of the cover plate is provided with a connecting portion, the connecting portion passes through the water inlet pipe, and the connecting portion is rotatably connected with the water inlet pipe, and the spring is arranged outside the water inlet pipe and used for pulling the connecting portion.

[0008] As an improvement of the above technical solution, a first convex portion is vertically connected to the outside of the water inlet pipe, the first convex portion is arranged between the connecting portion and the electrode welding gun, and two ends of the spring are respectively connected to the connecting portion and the first convex portion.

[0009] As an improvement of the above technical solution, the electrode welding gun is detachably connected with an electrode cap, a through first channel and a second channel are respectively arranged inside the electrode welding gun and the electrode cap, the first channel is communicated with the second channel, and the first channel is respectively communicated with the water inlet pipe and the water outlet pipe.

[0010] As an improvement of the above technical solution, the water stop mechanism further includes a cylinder, the water outlet pipe is provided with a second convex portion, the first convex portion and the second convex portion are arranged on opposite sides of the connecting portion, the cylinder is installed on the second convex portion, and the telescopic rod of the cylinder is arranged towards the connecting portion.

[0011] As an improvement of the above technical solution, a turntable is connected to the second convex portion, and the cylinder is installed on the turntable.

[0012] As an improvement of the above technical solution, the telescopic rod of the cylinder is cylindrical and a buckle portion is provided on the side surface of the end of the telescopic rod of the cylinder, a plugging groove is provided on the end surface of the connecting portion facing the cylinder, the plugging groove can accommodate the telescopic rod of the cylinder and the buckle portion, and an annular clamping groove is provided on the inner wall of the bottom end of the plugging groove.

[0013] As an improvement of the above technical solution, a water flow indicator is connected to the water outlet pipe, and a silicone waterproof ring is provided on the side wall of the groove.

[0014] As an improvement of the above technical solution, the piston mechanism includes a guiding end, the guiding end is arranged in the air inlet, and a protruding limiting portion is provided on the edge of the end face of the guiding end.

[0015] Advantages of the present application: Water flows in from the water inlet pipe and successively passes through the water inlet pipe, the first channel and the second channel and finally flows out from the water outlet pipe. Heat exchange is carried out between water or cooling water and the electrode cap to achieve cooling. It can not only provide more stable temperature control, reduce heat accumulation, but also greatly improve the service life and welding quality of the welding torch and the electrode cap.

[0016] By setting up a water pumping device, it can not only prevent the cooling water from overflowing, but also avoid the contact between water and the electrical part, reducing the risk of potential electrical faults; by emptying the internal cooling water, the operator can replace the electrode cap more easily and safely, avoiding unnecessary trouble and pollution caused by the overflow of water; avoiding the contact between water and the electrical part when replacing the electrode cap, improving the overall safety; reducing the waste of cooling water and keeping the working environment clean.

[0017] By driving the opening and closing of the water stop mechanism through the change of water pressure, unnecessary water flow into the cooling system is avoided, thereby effectively controlling the water inlet process of the cooling water, reducing the burden on the water cooling system, and being able to be flexibly controlled according to different working states. The water stop mechanism can also block the water remaining in the water inlet pipe when replacing the electrode cap.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present invention. Of course, it is not necessary for any product or method of implementing the present application to achieve all the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 is a structural schematic diagram of the present invention.

[0021] Figure 2 is a structural schematic diagram of the water inlet pipe of the present invention.

[0022] Figure 3It is a schematic structural diagram of the crank mechanism of the present invention.

[0023] Figure 4 It is another schematic structural diagram of the water inlet pipe of the present invention.

[0024] Figure 5 It is another schematic structural diagram of the present invention.

[0025] In the figure: electrode welding torch 1, electrode cap 2, water pumping device 3, water stop mechanism 4, water outlet pipe 5, cover plate 41, spring 42, cylinder 44, first branch pipe 61, second branch pipe 62, air inlet 461, piston mechanism 462, crank mechanism 463. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-5 , in the embodiment of the present invention, a cooling water path structure for replacing the electrode cap of an industrial robot resistance welding torch includes an electrode welding torch 1, an electrode cap 2 and a water pumping device 3. The electrode welding torch 1 is detachably connected to the electrode cap 2. The electrode welding torch 1 is connected with a water inlet pipe 3 and a water outlet pipe 5. The inner parts of the electrode welding torch 1 and the electrode cap 2 are respectively provided with a through first channel and a second channel. The first channel is communicated with the second channel, and the first channel is respectively communicated with the water inlet pipe 3 and the water outlet pipe 5. Among them, water or cooling water can flow in from the water inlet pipe 3, and the water or cooling water sequentially passes through the water inlet pipe 3, the first channel and the second channel and finally flows out from the water outlet pipe 5, and heat exchange is carried out with the electrode cap 2 by using the water or cooling water to achieve cooling;

[0028] It can be understood that the existing cooling methods of the electrode welding torch 1 mainly include two forms: air cooling and water cooling. Among them, the air cooling system can meet the requirements under certain low load conditions, but under high load or long-term operation conditions, the heat dissipation capacity of the air cooling system is limited, and the temperature cannot be fully controlled, and there is still an overheating problem. And because of its higher heat capacity and thermal conductivity, the water cooling system shows a more excellent cooling effect in a high-temperature environment. Therefore, as the main method for cooling the welding torch and the electrode cap 2, the water cooling system has a stronger heat dissipation capacity and can more effectively take away the heat of the electrode welding torch 1 and the electrode cap 2 and keep them within a safe temperature range.

[0029] A water cooling system is introduced to take away the heat inside the welding torch through the cooling water path, and the cooling effect is more remarkable. The water cooling system can not only provide more stable temperature control, reduce heat accumulation, but also greatly improve the service life of the welding torch and the electrode cap 2 and the welding quality.

[0030] Since the inside of the electrode welding torch 1 and the electrode cap 2 will also be filled with the cooling water of the water cooling system when the above water cooling system is applied, when the electrode cap 2 is replaced, the cooling water inside the electrode welding torch 1 and the electrode cap 2 will flow outwards. The replacement of the electrode cap 2 is inevitable because the electrode cap 2 will be continuously affected by high temperature and current during the welding process, resulting in the gradual aging, wear or melting of its material. As the surface of the electrode cap 2 gradually degenerates, its electrical conductivity and heat conduction ability will both decline, thus affecting the welding quality. Therefore, regularly replacing the electrode cap 2 is a necessary measure to ensure the welding quality, improve the work efficiency and extend the service life of the welding torch. For this reason, the present invention also provides an embodiment to solve the above problems. Specifically, the water outlet pipe 5 is connected to the pumping device 3. Before replacing the electrode cap 2, the pumping device 3 can pump out the water inside the electrode welding torch 1 and the electrode cap 2 to ensure that there is no cooling water left inside the welding torch.

[0031] This can not only prevent the cooling water from overflowing, but also avoid the contact between the water and the electrical part, reducing the risk of potential electrical faults; by emptying the internal cooling water, the operator can replace the electrode cap 2 more easily and safely, avoiding unnecessary troubles and pollution caused by the overflow of water; avoiding the contact between the water and the electrical part when replacing the electrode cap 2 improves the overall safety; if the cooling water fails to be pumped out in time and overflows during the replacement process, it will not only waste the cooling water, but also may pollute the working environment. The pumping device 3 can effectively avoid this problem, reduce the waste of cooling water, and keep the working environment clean.

[0032] In some embodiments, the water inlet pipe 3 is connected with a water stop mechanism 4. Specifically, the water inlet pipe 3 is connected with the water stop mechanism 4 embedded in the water inlet pipe 3. The water stop mechanism 4 is arranged close to the motor welding torch. The water stop mechanism 4 is rotatably connected to the water inlet pipe 3 and can actively open or close the water inlet pipe 3 according to the water pressure in the water inlet pipe 3. It can be understood that the design of the water inlet pipe 3 and the hydrodynamic characteristics of the water flow determine that the cooling water may not be completely emptied during the pumping process. In actual operation, affected by factors such as pipe bending and resistance, the water flow in the water inlet pipe 3 may not completely flow to the inlet part of the pumping device 3. Especially when there are bends, dead ends or water retention areas inside the water inlet pipe 3, water may accumulate in the pipe, resulting in residual water. Secondly, the suction capacity of the pumping device 3 is limited. Although the pumping device 3 can effectively extract the cooling water inside the electrode welding torch 1 and the electrode cap 2, due to certain limitations in the suction capacity of the device and the suction efficiency of the pipe, it may not be able to completely pump out all the water in the water inlet pipe 3. Therefore, by setting the water stop mechanism 4, it is ensured that the water stop mechanism 4 can still block the water remaining in the water inlet pipe 3 when the electrode cap 2 is replaced;

[0033] The water stop mechanism 4 is rotatably connected to the water inlet pipe 3 and can automatically open or close the water inlet pipe 3 according to the water pressure in the water inlet pipe 3. After the electrode welding torch 1 is started, the cooling water will flow into the water inlet pipe 3. When the water pressure reaches the preset value, the water stop mechanism 4 automatically opens to allow the cooling water to enter the electrode welding torch 1 and the electrode cap 2; when the water pressure decreases, or when the electrode welding torch 1 is in a shutdown state, the water stop mechanism 4 will automatically close to prevent the cooling water from continuing to enter the pipeline system; by driving the opening and closing of the water stop mechanism 4 through the change of water pressure, unnecessary water flow into the cooling system is avoided, thus effectively controlling the water inlet process of the cooling water, reducing the burden on the water cooling system, and enabling flexible control according to different working states.

[0034] The end of the water outlet pipe 5 is connected with a first branch pipe 61 and a second branch pipe 62. A solenoid valve is connected to the second branch pipe 62. The pumping device 3 is connected to the second branch pipe 62. The first branch pipe 61 is used to guide the cooling water flow to other cooling parts, while the second branch pipe 62 is used to connect the pumping device 3. The solenoid valve on the second branch pipe 62 can be controlled according to actual needs, thereby regulating the flow direction of the cooling water. The solenoid valve can be started and stopped by an automatic control system according to the water volume, working state and other parameters inside the electrode welding torch 1, so as to efficiently regulate the flow of the cooling water; in addition, a water flow indicator can be connected to the water outlet pipe 5 to timely detect the water level inside the water outlet pipe 5 and check whether the water in the water outlet pipe 5 has been completely pumped out.

[0035] In some embodiments, the water stop mechanism 4 includes a cover plate 41 and a spring 42. A groove 31 is provided on the inner wall of the water inlet pipe 3. The cover plate 41 is disposed in the groove 31 and covers the internal passage of the water inlet pipe 3. A connecting portion 411 is provided at one end of the cover plate 41. The connecting portion 411 passes through the water inlet pipe 3 and is rotatably connected to the water inlet pipe 3. The spring 42 is disposed outside the water inlet pipe 3 and is used to pull the connecting portion 411. A first protruding portion 32 is vertically connected to the outside of the water inlet pipe 3. The first protruding portion 32 is disposed between the connecting portion 411 and the electrode welding torch 1. Two ends of the spring 42 are respectively connected to the connecting portion 411 and the first protruding portion 32. The design of the connecting portion 411 enables the cover plate 41 to be flexibly opened or closed according to the water pressure change. When the water pressure is high, the cover plate 41 will be forced to push outwards, allowing the cooling water to flow in; when the water pressure decreases, the cover plate 41 will automatically return to its original position under the traction of the spring 42, closing the water inlet pipe 3 to prevent water flow. In addition, the water stop mechanism 4 is further provided with an air inlet 461. The air inlet 461 communicates the inside of the water inlet pipe 3 with the outside. A piston mechanism 462 is slidably connected in the air inlet 461. A crank mechanism 463 is connected between the cover plate 41 and the piston mechanism 462. By flipping the cover plate 41 to drive the piston mechanism 462, the opening or closing of the air inlet 461 is controlled, enabling the water inlet pipe 3 to be ventilated and avoiding affecting the water pumping. It can be understood that during high-temperature operation, if the residual water inside the welding torch head contacts the electric arc or high-temperature metal (>1000 °C), the water will instantaneously vaporize and expand, causing the internal pressure to rise sharply, which may lead to pipeline bursting or damage to the welding torch head, threatening the safety of the operator. Therefore, the water should be pumped out as cleanly as possible;

[0036] The spring 42 is disposed outside the water inlet pipe 3 and is connected to the connecting portion 411 and the first protruding portion 32, playing a role of traction and restoration. One end of the spring 42 is connected to the connecting portion 411, and the other end is connected to the first protruding portion 32. Through the pulling force of the spring 42, it can be ensured that when the water pressure changes, the water stop mechanism 4 can respond in a timely manner, automatically control the opening and closing of the water inlet pipe 3, and ensure the precise control of the water flow.

[0037] However, although the water pressure can push the cover plate 41 in the water stop mechanism 4 to open or close within a certain range, the acting force of this water pressure is limited. And with the changes in water flow and pressure, the opening process of the cover plate 41 will be restricted to a certain extent. The water pressure in the water inlet pipe 3 usually remains within a relatively stable range, affected by factors such as the water supply system and the flow regulating device. In the working state, the water pressure may vary within a certain fluctuation range. However, the driving force that the water pressure can generate can never meet the continuous force required to push open the cover plate 41. Therefore, relying solely on the water pressure in the water inlet pipe 3 to completely push open or open the cover plate 41, especially in the case of large water pressure changes or low water pressure, it is impossible to achieve an ideal switching effect. At the same time, the spring 42, as a key component in the water stop mechanism 4, functions to restore the cover plate 41 to its initial position by providing a reverse force. During the process of the spring 42 being stretched, the force required by it will gradually increase as the spring 42 extends. Specifically, when the water pressure pushes the cover plate 41, the reverse force of the spring 42 begins to increase and will eventually reach an equilibrium point where the water pressure can no longer continue to push the cover plate 41. If only relying on the water pressure to push the opening of the cover plate 41, as the spring 42 is gradually stretched, the driving force provided by the water pressure will gradually weaken, resulting in the cover plate 41 being unable to be fully opened.

[0038] Therefore, relying solely on the water pressure in the water inlet pipe 3 to control the opening and closing of the cover plate 41 is not sufficient. This requires the introduction of additional auxiliary power, such as a cylinder 44 or other mechanical devices, to supplement the deficiency of the water pressure and ensure that the cover plate 41 can be accurately and quickly opened or closed according to actual needs.

[0039] For this reason, the invention also provides some embodiments to solve the above problems. Specifically, the water stop mechanism 4 further includes a cylinder 44. The water outlet pipe 5 is provided with a second convex portion 33. The first convex portion 32 and the second convex portion 33 are arranged on opposite sides of the connecting portion 411. The cylinder 44 is installed on the second convex portion 33, and the telescopic rod of the cylinder 44 is arranged towards the connecting portion 411. A turntable 45 is connected to the second convex portion 33, and the cylinder 44 is installed on the turntable 45. The telescopic rod of the cylinder 44 is cylindrical and a buckle portion is provided on the side surface of the end of the telescopic rod of the cylinder 44. An insertion slot is provided on the end surface of the connecting portion 411 facing the cylinder 44. The insertion slot can accommodate the telescopic rod and the buckle portion of the cylinder 44, and an annular clamping groove is provided on the inner wall of the bottom end of the insertion slot. The telescopic rod of the cylinder 44 is cylindrical, and a buckle portion is provided on the side surface of the end of the telescopic rod, which cooperates with the insertion slot provided on the end surface of the connecting portion 411 facing the cylinder 44. The insertion slot can accommodate the buckle portion of the telescopic rod of the cylinder 44 to ensure that the telescopic rod of the cylinder 44 is stably inserted into the slot to achieve accurate positioning and control. An annular clamping groove is provided on the inner wall of the bottom end of the insertion slot, which can further lock the position of the telescopic rod to prevent it from shifting or loosening during the operation.

[0040] Under normal working conditions, the water pressure in the water inlet pipe 3 controls the opening and closing of the cover plate 41, and the spring 42 ensures its restoring effect. When it is necessary to extract the cooling water inside the electrode welding torch 1, the air cylinder 44 is activated, and the telescopic rod extends and inserts into the insertion groove of the connecting part 411. The air cylinder 44 drives the connecting part 411 to rotate through the telescopic action, so as to accurately adjust the opening and closing state of the water inlet pipe 3. When the electrode cap 2 is replaced, the water pumping device 3 controls the water flow in the water outlet pipe 5 to empty the cooling water inside the electrode welding torch 1, avoiding water overflow and ensuring the safety of the equipment and the convenience of operation.

[0041] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims within the present invention.

Claims

1. A cooling water circuit structure for replacing an electrode cap of an industrial robot resistance welding gun, comprising an electrode welding gun, wherein the electrode welding gun is connected to a water inlet pipe and a water outlet pipe, wherein the water outlet pipe is connected to a pumping device, wherein: The water inlet pipe is connected to a water-stopping mechanism embedded in the water inlet pipe, and the water-stopping mechanism includes a cover plate rotatably connected to the water inlet pipe, and the water inlet pipe is opened or closed by flipping the cover plate. The water-stopping mechanism is provided with an air inlet, and a piston mechanism is slidably connected in the air inlet. A crank mechanism is connected between the cover plate and the piston mechanism, and the piston mechanism is driven by flipping the cover plate to control the opening or closing of the air inlet.

2. The cooling water channel structure for replacing the electrode cap of an industrial robot resistance welding gun according to claim 1, characterized in that: The water-stop mechanism also includes a spring. The inner wall of the water inlet pipe is provided with a groove. The cover plate is arranged in the groove and covers the internal channel of the water inlet pipe. A connecting part is provided at one end of the cover plate. The connecting part passes through the water inlet pipe and is rotatably connected to the water inlet pipe. The spring is arranged on the outside of the water inlet pipe and is used to pull the connecting part.

3. The cooling water channel structure for replacing the electrode cap of an industrial robot resistance welding gun according to claim 2, characterized in that: The outer side of the water inlet pipe is vertically connected with a first protrusion, the first protrusion is arranged between the connecting part and the electrode welding gun, and the two ends of the spring are respectively connected to the connecting part and the first protrusion.

4. The cooling water channel structure for replacing the electrode cap of an industrial robot resistance welding gun according to claim 1, characterized in that: The electrode welding gun is detachably connected to an electrode cap. The electrode welding gun and the electrode cap are respectively provided with a first channel and a second channel that are connected. The first channel is connected to the second channel, and the first channel is respectively connected to the water inlet pipe and the water outlet pipe.

5. The cooling water channel structure for replacing the electrode cap of an industrial robot resistance welding gun according to claim 3, characterized in that: The water-stopping mechanism also includes a cylinder, the water outlet pipe is provided with a second protrusion, the first protrusion and the second protrusion are arranged on opposite sides of the connecting portion, the cylinder is installed on the second protrusion, and the telescopic rod of the cylinder is arranged toward the connecting portion.

6. The cooling water channel structure for replacing the electrode cap of an industrial robot resistance welding gun according to claim 5, characterized in that: The second protrusion is connected to a turntable, and the cylinder is installed on the turntable.

7. The cooling water channel structure for replacing the electrode cap of an industrial robot resistance welding gun according to claim 6, characterized in that: The telescopic rod of the cylinder is cylindrical and a buckle portion is provided on the side of the end of the telescopic rod of the cylinder. A plug-in groove is provided on the end surface of the connecting portion facing the cylinder. The plug-in groove can accommodate the telescopic rod of the cylinder and the buckle portion. An annular clamping groove is provided on the inner wall of the bottom end of the plug-in groove.

8. The cooling water channel structure for replacing the electrode cap of an industrial robot resistance welding gun according to claim 7, characterized in that: The water outlet pipe is connected with a water flow indicator, and the side wall of the groove is provided with a silicone waterproof ring.

9. The cooling water channel structure for replacing the electrode cap of an industrial robot resistance welding gun according to claim 1, characterized in that: The piston mechanism comprises a guide end, the guide end is arranged in the air inlet, and a raised limiting portion is provided on the edge of the end surface of the guide end.

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