Water manager and spot welding robot

Abstract

The present application belongs to the technical field of welding, and particularly relates to a water manager, which comprises a welding gun cooling water inlet pipe, a welding gun cooling water return pipe and a water storage device, a two-position two-common normally-off electromagnetic valve is arranged on the welding gun cooling water inlet pipe, the water storage device comprises a connecting rod, a water cylinder, a gas cylinder and a two-position five-way electromagnetic valve, a water storage cavity of the water cylinder is connected with the welding gun cooling water return pipe through a pipeline, a piston rod of the water cylinder and a piston rod of the gas cylinder are respectively fixedly connected with the connecting rod, and two working interfaces of the two-position five-way electromagnetic valve are respectively connected with a rod cavity and a rodless cavity of the gas cylinder through pipelines. The present application also relates to a spot welding robot comprising the water manager. The water manager has the beneficial effect that if the power supply system suddenly stops supplying power during the process of disassembling an electrode cap, the water storage cavity of the water cylinder of the water storage device can still suck water from the welding gun cooling water return pipe, so that the cooling water can still be effectively prevented from flowing out of the front end of the welding gun under the condition of power failure.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of welding, and particularly relates to a water manager and a spot welding robot. BACKGROUND

[0002] On an automobile white welding process production line, the quality of the welding electrode end face of a spot welding robot directly affects the welding strength. In order to ensure the welding quality of a welding product, the electrode cap of the welding electrode is usually replaced after a certain number of welding points are welded. When the electrode cap is removed from the front end of the welding gun, the electrode cooling water flows out from the front end of the welding gun, affecting the normal use of the surrounding equipment.

[0003] Patent No. ZL201811300702.6 discloses a cooling water anti-falling device that can prevent cooling water from flowing out from the front end of the welding gun when the electrode cap is removed. Specifically, as shown in Figure 5 before each electrode installed at the front end of the welding gun is replaced, a stop valve 11 is used to stop the circulation of cooling water in each electrode 3, and part or all of the cooling water accumulated in the cooling water passage 41 is sucked into the inside of the cylinder 5, so that when each electrode 3 is removed from the front end of the welding gun 2, the cooling water can be prevented from flowing out from the front end of the welding gun. After a new electrode 3 is installed at the front end of the welding gun, the stop of the cooling water circulation by the stop valve 11 is released, and the spot welding machine becomes in a state capable of performing spot welding. The defect of the above-mentioned scheme is that if the power supply system suddenly loses power after the electrode cap is removed, the water suction function of the cooling water anti-falling device will fail, and the cooling water will flow out from the front end of the welding gun. SUMMARY

[0004] The purpose of the present application is to provide a water manager that can still effectively prevent cooling water from flowing out from the front end of the welding gun in the case of sudden power loss of the power supply system.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0006] A water manager, comprising a welding gun cooling water inlet pipe, a welding gun cooling water return pipe and a water storage device, the water outlet end of the welding gun cooling water inlet pipe is used to connect with the water inlet interface of the welding gun, the water inlet end of the welding gun cooling water return pipe is used to connect with the water return interface of the welding gun, a two-position two-normal power-off electromagnetic valve is arranged on the welding gun cooling water inlet pipe,

[0007] The water storage device comprises a connecting rod, a water cylinder, an air cylinder and a two-position five-way electromagnetic valve, the water cylinder comprises a cylinder body, a piston and a piston rod, one side of the piston of the water cylinder is connected with the piston rod, the other side of the piston of the water cylinder forms a water storage cavity with the inner wall of the cylinder body, the water storage cavity is connected with the welding gun cooling water return pipe through a pipeline, the piston rod of the water cylinder and the piston rod of the air cylinder are fixedly connected with the connecting rod respectively, the first working interface of the two-position five-way electromagnetic valve is connected with the rod cavity of the air cylinder through a pipeline, and the second working interface of the two-position five-way electromagnetic valve is connected with the rodless cavity of the air cylinder through a pipeline.

[0008] The water manager provided by the application has the following advantages: compared with the prior art, in a first aspect, by arranging a two-position two-way normally-off electromagnetic valve on the pipeline of the welding gun cooling water inlet pipe, in the case that the power supply system suddenly loses power, the water supply channel in the welding gun cooling water inlet pipe is cut off; in a second aspect, the water storage device is arranged, the first working interface and the second working interface of the two-position five-way electromagnetic valve are connected with the rod cavity and the rodless cavity of the air cylinder respectively, and one end of the piston rod of the air cylinder and one end of the piston rod of the water cylinder are fixedly connected with the connecting rod, by controlling the two-position five-way electromagnetic valve to supply air to the rod cavity or the rodless cavity of the air cylinder, the piston rod of the water cylinder can be driven to move, so that the water storage cavity of the water cylinder can suck water or release water to the welding gun cooling water return pipe, and in the process of dismounting the electrode cap, if the power supply system suddenly loses power, the water storage cavity of the water cylinder can still suck water to the welding gun cooling water return pipe, so that the cooling water can be effectively prevented from flowing out of the front end of the welding gun in the case of power loss.

[0009] In one of the embodiments, the two-position five-way electromagnetic valve is a two-position five-way double-electric control electromagnetic valve or a two-position five-way single-electric control electromagnetic valve.

[0010] In one of the embodiments, the water manager further comprises a cooling water inlet main pipe, a cooling water return main pipe, a transformer cooling water inlet pipe and a transformer cooling water return pipe, the water inlet end of the welding gun cooling water inlet pipe and the water inlet end of the transformer cooling water inlet pipe are connected with the water outlet end of the cooling water inlet main pipe respectively, the water outlet end of the transformer cooling water return pipe and the water outlet end of the welding gun cooling water return pipe are connected with the water inlet end of the cooling water return main pipe respectively, the water outlet end of the transformer cooling water inlet pipe is used for being connected with the water inlet interface of the transformer, and the water inlet end of the transformer cooling water return pipe is used for being connected with the water return interface of the transformer.

[0011] In one of the embodiments, flow meters are arranged on the welding gun cooling water return pipe and the transformer cooling water return pipe respectively.

[0012] And / or, one-way valves are arranged on the welding gun cooling water return pipe and the transformer cooling water return pipe respectively.

[0013] In one of the embodiments, the water manager further comprises a support, the welding gun cooling water inlet pipe, the transformer cooling water inlet pipe, the transformer cooling water return pipe and the welding gun cooling water return pipe are arranged in parallel on the support.

[0014] In one of the embodiments, the welding gun cooling water inlet pipe, the transformer cooling water inlet pipe, the transformer cooling water return pipe and the welding gun cooling water return pipe are fixedly connected to the support in the vertical direction, the cooling water inlet main pipe and the cooling water return main pipe are arranged in the horizontal direction, the lower end of the welding gun cooling water inlet pipe and the lower end of the transformer cooling water inlet pipe are respectively connected to the cooling water inlet main pipe, and the lower end of the welding gun cooling water return pipe and the lower end of the transformer cooling water return pipe are respectively connected to the cooling water return main pipe.

[0015] In one of the embodiments, the water manager further comprises a first ball valve, a second ball valve, a third ball valve and a fourth ball valve, the outlet of the first ball valve is connected to the welding gun cooling water inlet pipe, the inlet of the first ball valve is used to be connected to a gas source, the outlet of the second ball valve is connected to the transformer cooling water inlet pipe, the inlet of the second ball valve is used to be connected to a gas source, the water inlet of the third ball valve is connected to the transformer cooling water return pipe, the water outlet of the third ball valve is used to discharge residual water and gas, the water inlet of the fourth ball valve is connected to the welding gun cooling water return pipe, and the water outlet of the fourth ball valve is used to discharge residual water and gas.

[0016] The welding gun cooling water inlet pipe, the transformer cooling water inlet pipe, the transformer cooling water return pipe and the welding gun cooling water return pipe are respectively provided with a fifth ball valve for controlling the on-off of the medium, the fifth ball valve on the welding gun cooling water inlet pipe is arranged at the upstream end of the first ball valve, the fifth ball valve on the transformer cooling water inlet pipe is arranged at the upstream end of the second ball valve, the fifth ball valve on the transformer cooling water return pipe is arranged at the downstream end of the third ball valve, and the fifth ball valve on the welding gun cooling water return pipe is arranged at the downstream end of the fourth ball valve.

[0017] In one of the embodiments, the inlets of the first ball valve and the second ball valve are respectively provided with quick plug joints.

[0018] In one of the embodiments, one side of each of the first ball valve, the second ball valve, the third ball valve and the fourth ball valve is provided with a first indicator.

[0019] And / or, the water manager further comprises a support, the welding gun cooling water inlet pipe, the transformer cooling water inlet pipe, the transformer cooling water return pipe and the welding gun cooling water return pipe are arranged in parallel on the support, four second indication plates are further arranged on the support, each of the second indication plates corresponds to the position of the welding gun cooling water inlet pipe, the transformer cooling water inlet pipe, the transformer cooling water return pipe and the welding gun cooling water return pipe.

[0020] Another embodiment of the present application provides a spot welding robot, which comprises the water manager according to any one of the above embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0022] Figure 1 Structure schematic view of the water manager according to the embodiment of the present application;

[0023] Figure 2 Structure schematic view of the water manager according to the embodiment of the present application; Figure 1 Structure schematic view of the water manager according to the embodiment of the present application;

[0024] Figure 3 Structure schematic view of the water manager according to the embodiment of the present application;

[0025] Figure 4 Structure schematic view of the water manager according to the embodiment of the present application;

[0026] Figure 5 Structure schematic view of the cooling water falling prevention device in the prior art. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0028] In the description of the present application, it needs to be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0029] In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0030] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] As shown in Figures 1-2 The water manager provided by the present application comprises a welding gun cooling water inlet pipe 11, a welding gun cooling water return pipe 24 and a water storage device 3. The water outlet end of the welding gun cooling water inlet pipe 11 is used to connect with the water inlet interface of the welding gun, the water inlet end of the welding gun cooling water return pipe 24 is used to connect with the water return interface of the welding gun, and a two-position two-common normally off electromagnetic valve 4 is arranged on the welding gun cooling water inlet pipe 11.

[0032] The water storage device 3 comprises a connecting rod 31, a water cylinder 32, a gas cylinder 33 and a two-position five-way electromagnetic valve 34. The water cylinder comprises a cylinder body, a piston and a piston rod. One side of the piston of the water cylinder is connected with the piston rod, and the other side of the piston of the water cylinder forms a water storage cavity 320 with the inner wall of the cylinder body. The water storage cavity 320 is connected with the welding gun cooling water return pipe 24 through a pipeline. The piston rod of the water cylinder 32 and the piston rod of the gas cylinder 33 are fixedly connected with the connecting rod 31. The first working interface of the two-position five-way electromagnetic valve 34 is connected with the rod cavity 331 of the gas cylinder 33 through a pipeline. The second working interface of the two-position five-way electromagnetic valve 34 is connected with the rodless cavity 332 of the gas cylinder through a pipeline. The gas source interface of the two-position five-way electromagnetic valve 34 is used for connecting a gas source. The gas cylinder can be a double-acting gas cylinder. The number of the gas cylinder can be one, two or more. The actual situation can be selected, and the specific limitation is not made here.

[0033] The two-position five-way electromagnetic valve 34 is an automatic basic element for controlling fluid. Specifically, a two-position five-way single electric control electromagnetic valve or a two-position five-way double electric control electromagnetic valve with mature technology can be used. The two-position five-way double electric control electromagnetic valve is provided with two working interfaces, a gas source interface, and two exhaust ports.

[0034] Referring to Figure 3 and Figure 4 When the coil B of the two-position five-way double electric control electromagnetic valve is powered, the rodless cavity 332 of the gas cylinder is supplied with gas through the gas source interface and the second working interface. The piston rod of the gas cylinder 33 moves to the left side, and the piston rod of the water cylinder 32 is driven to move to the left side, so that the water storage cavity 320 of the water cylinder 32 generates negative pressure. The cooling water remaining in the welding gun cooling water return pipe 24 and the welding gun cooling water inlet pipe 11 is sucked into the water storage cavity 320. Therefore, when the electrode cap is removed from the front end of the welding gun, the cooling water can be prevented from flowing out of the front end of the welding gun. The two-position five-way double electric control electromagnetic valve has the function of power-off retention. At this time, if the power supply system is powered off, the coil A and the coil B of the two-position five-way double electric control electromagnetic valve are simultaneously powered off, and the water cylinder 32 of the water storage device 3 can be kept in the water pumping state before power-off. The water in the water storage cavity 320 will not flow back to the welding gun cooling water return pipe, so that the cooling water can still be effectively prevented from flowing out of the front end of the welding gun.

[0035] When the coil A of the two-position five-way double electric control electromagnetic valve is powered, the rod cavity 331 of the gas cylinder 33 is supplied with gas through the gas source interface and the first working interface. The piston rod of the gas cylinder 33 moves to the right side, and the piston rod of the water cylinder 32 is driven to move to the right side, so that the cooling water accumulated in the water storage cavity 320 of the water cylinder 32 flows back to the welding gun cooling water return pipe. At this time, if the power supply system is powered off, the coil A and the coil B of the two-position five-way double electric control electromagnetic valve are simultaneously powered off, and the water cylinder of the water storage device is kept in the state before power-off.

[0036] When the coil of the two-position five-way single electric control electromagnetic valve is powered off, the two-position five-way single electric control electromagnetic valve supplies gas to the rodless cavity 332 of the cylinder 33 through the gas source interface and the second working interface, the piston rod of the cylinder 33 moves to the left, the piston rod of the water cylinder 32 is driven to move to the left, the water cavity 320 of the water cylinder generates negative pressure, and the cooling water remaining in the welding gun cooling water return pipe 24 and the welding gun cooling water inlet pipe 11 is sucked into the water cavity 320. Therefore, when the electrode cap is removed from the front end of the welding gun, the cooling water can be prevented from flowing out of the front end of the welding gun. At this time, if the power supply system is powered off, the water cylinder 32 of the water storage device 3 can remain in the water pumping state before the power is off because the coil of the two-position five-way single electric control electromagnetic valve is originally powered off. The water in the water cavity 320 cannot flow back to the welding gun cooling water return pipe, and the cooling water can still be effectively prevented from flowing out of the front end of the welding gun.

[0037] When the coil of the two-position five-way single electric control electromagnetic valve is powered on, the two-position five-way single electric control electromagnetic valve supplies gas to the rod cavity 331 of the cylinder 33 through the gas source interface and the first working interface, the piston rod of the cylinder 33 moves to the right, the piston rod of the water cylinder 32 is driven to move to the right, and the cooling water accumulated in the water cavity 320 of the water cylinder flows back to the welding gun cooling water return pipe 24. At this time, if the power supply system is powered off, the coil of the two-position five-way single electric control electromagnetic valve is powered off, and then the two-position five-way single electric control electromagnetic valve supplies gas to the rodless cavity 320 of the cylinder 33 through the gas source interface and the second working interface, the piston rod of the cylinder 33 moves to the left, the piston rod of the water cylinder 32 is driven to move to the left, and the water cavity 320 of the water cylinder 32 generates negative pressure, and the cooling water remaining in the welding gun cooling water return pipe 24 and the welding gun cooling water inlet pipe 11 is sucked into the water cavity 320.

[0038] Compared with the prior art, the water manager provided by the application has the following advantages. First, the two-position two-ordinary power-off electromagnetic valve 4 is arranged on the pipeline of the welding gun cooling water inlet pipe 11, and the water path in the welding gun cooling water inlet pipe 11 is cut off in the case of sudden power failure of the power supply system. Second, the water storage device 3 is arranged, the first working interface and the second working interface of the two-position five-way electromagnetic valve 34 are respectively connected with the rod cavity 331 and the rodless cavity 332 of the cylinder, one end of the piston rod of the cylinder 33 and one end of the piston rod of the water cylinder 32 are fixedly connected to the connecting rod 31, the piston rod of the water cylinder 32 can be driven to move by controlling the two-position five-way electromagnetic valve 34 to supply gas to the rod cavity 331 or the rodless cavity 332 of the cylinder 33, so that the water cavity 320 of the water cylinder 32 can suck water or release water from the welding gun cooling water return pipe 24. In the process of removing the electrode cap, if the power supply system suddenly fails, the water cavity 320 of the water cylinder 32 can still suck water from the welding gun cooling water return pipe 24, and the cooling water can still be effectively prevented from flowing out of the front end of the welding gun in the case of power failure.

[0039] Spot welding robots are widely used to weld thin sheet materials, in which the spot welding robot is earlier applied in automobile assembly line, the welding gun held by the arm of the spot welding robot includes an electrode, a cable, an air pipe, a cooling water pipe and a welding transformer. Both the welding gun and the welding transformer need to be connected to a cooling water loop for cooling. In one embodiment, referring to Figures 1-3 The water manager further includes a cooling water inlet main pipe 1, a cooling water outlet main pipe 2, a transformer cooling water inlet pipe 12 and a transformer cooling water outlet pipe 23. The inlet end of the welding gun cooling water inlet pipe 11 and the inlet end of the transformer cooling water inlet pipe 12 are respectively connected to the outlet end of the cooling water inlet main pipe 1, and the outlet end of the transformer cooling water outlet pipe 23 and the outlet end of the welding gun cooling water outlet pipe 24 are respectively connected to the inlet end of the cooling water outlet main pipe 2. The outlet end of the transformer cooling water inlet pipe 12 is used to connect to the inlet interface of the transformer, and the inlet end of the transformer cooling water outlet pipe 23 is used to connect to the outlet interface of the transformer.

[0040] In one embodiment, referring to Figure 1 and Figure 3 The water manager includes an electric control module 7, and flow meters are arranged on the welding gun cooling water outlet pipe 24 and the transformer cooling water outlet pipe 23. The flow meters are respectively electrically connected to the electric control module 7, and an alarm is given when the flow in the pipeline is too low.

[0041] In one embodiment, referring to Figure 3 One-way valves are arranged on the welding gun cooling water outlet pipe 24 and the transformer cooling water outlet pipe 23 to prevent reverse flow of the cooling water.

[0042] The connection pipes of the conventional welding gun cooling water are in disorder, and it is difficult to manage the site. Based on this, in one embodiment of the present application, referring to Figure 1 and Figure 2 The water manager further includes a support 6, and the welding gun cooling water inlet pipe 11, the transformer cooling water inlet pipe 12, the transformer cooling water outlet pipe 23 and the welding gun cooling water outlet pipe 24 are arranged in parallel on the support 6. Specifically, the welding gun cooling water inlet pipe 11, the transformer cooling water inlet pipe 12, the transformer cooling water outlet pipe 23 and the welding gun cooling water outlet pipe 24 are fixedly connected to the support 6 in the vertical direction. The cooling water inlet main pipe 1 and the cooling water outlet main pipe 2 are arranged in the horizontal direction. The lower end of the welding gun cooling water inlet pipe 11 and the lower end of the transformer cooling water inlet pipe 12 are respectively connected to the cooling water inlet main pipe 1. The lower end of the welding gun cooling water outlet pipe 23 and the lower end of the transformer cooling water outlet pipe 24 are respectively connected to the cooling water outlet main pipe 4. In this way, the use of the welding site can be standardized, and management is facilitated.

[0043] When there are sundries in the pipeline, causing the pipeline to be blocked, maintenance is required. In one embodiment, referring toFigures 1-3 The water manager further comprises a first ball valve 51, a second ball valve 52, a third ball valve 53, and a fourth ball valve 54. The outlet of the first ball valve 51 is connected to the welding torch cooling water inlet pipe 11, and the inlet of the first ball valve 51 is used to connect to the air source. The outlet of the second ball valve 52 is connected to the transformer cooling water inlet pipe 12, and the inlet of the second ball valve 52 is used to connect to the air source. The inlet of the third ball valve 53 is connected to the transformer cooling water return pipe 23, and the outlet of the third ball valve 53 is used to discharge residual water and gas. The inlet of the fourth ball valve 54 is connected to the welding torch cooling water return pipe 24, and the outlet of the fourth ball valve 54 is used to discharge residual water and gas. That is, the inlets of the first ball valve 51 and the second ball valve 52 are used as maintenance air outlets, and the outlets of the third ball valve 53 and the fourth ball valve 54 are used as maintenance water and slag outlets. The outlets of the third ball valve 53 and the fourth ball valve 54 can be connected to an air pipe to directly discharge residual water, gas, and impurities into the sewer. The fifth ball valves 55 are arranged on the welding torch cooling water inlet pipe 11, the transformer cooling water inlet pipe 12, the transformer cooling water return pipe 23, and the welding torch cooling water return pipe 24 to control the on-off of the medium. The fifth ball valve 55 on the welding torch cooling water inlet pipe 11 is arranged at the upstream end of the first ball valve 51, the fifth ball valve 55 on the transformer cooling water inlet pipe 12 is arranged at the upstream end of the second ball valve 52, the fifth ball valve 55 on the transformer cooling water return pipe 23 is arranged at the downstream end of the third ball valve 53, and the fifth ball valve 55 on the welding torch cooling water return pipe 24 is arranged at the downstream end of the fourth ball valve 54.

[0044] Specifically, the first ball valve 51, the second ball valve 52, the third ball valve 53, the fourth ball valve 54, and the fifth ball valve 55 can be manual valves. When maintenance is needed, the fifth ball valves 55 on the welding torch cooling water inlet pipe 11, the transformer cooling water inlet pipe 12, the transformer cooling water return pipe 23, and the welding torch cooling water return pipe 24 are closed, the air source is connected to the inlets of the first ball valve 51 and the second ball valve 52, and then compressed air is used to blow the inside of the pipes. Part of the gas enters the cooling channel inside the welding torch through the first ball valve 51 and the welding torch cooling water inlet pipe 11, then enters the welding torch cooling water return pipe 24, and the residual water, gas, and impurities are discharged from the maintenance outlet of the fourth ball valve 54. Part of the gas enters the cooling channel inside the transformer through the second ball valve 52 and the transformer cooling water inlet pipe 12, then enters the transformer cooling water return pipe 23, and the residual water, gas, and impurities are discharged from the maintenance outlet of the third ball valve 53.

[0045] Further, in the present embodiment, referring to Figure 2The first ball valve 51 and the second ball valve 52 are provided with quick plug joints 500 at air inlet ports, and a male plug can be used, which can be directly connected with a female plug on site, and is convenient to use.

[0046] In one of the embodiments, referring to Figure 1 and Figure 2 One side of the first ball valve 51, the second ball valve 52, the third ball valve 53 and the fourth ball valve 54 is provided with a first indication plate 601 for indicating the use state of the ball valve. For example, the fifth ball valve 55 is always open, and the first indication plate 601 beside the fifth ball valve 55 can be written as "always open". The first ball valve 51, the second ball valve 52, the third ball valve 53 and the fourth ball valve 54 are always closed, and the first indication plate 601 beside the first ball valve 51, the second ball valve 52, the third ball valve 53 and the fourth ball valve 54 can be written as "always closed". The support 6 is further provided with four second indication plates 602, which are used for identification, and each second indication plate 602 corresponds to the position of the welding gun cooling water inlet pipe 11, the transformer cooling water inlet pipe 12, the transformer cooling water return pipe 23 and the welding gun cooling water return pipe 24. For example, the second indication plate 602 beside the transformer cooling water inlet pipe 12 can be written as "transformer cooling water inlet". In this way, the staff can be facilitated to manage and maintain.

[0047] Another embodiment of the present application provides a spot welding robot, which comprises the water manager of any one of the above embodiments.

[0048] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A water manager characterized in that, The water manager comprises a welding gun cooling water inlet pipe, a welding gun cooling water return pipe and a water storage device, the water outlet end of the welding gun cooling water inlet pipe is used for being connected with a water inlet interface of the welding gun, the water inlet end of the welding gun cooling water return pipe is used for being connected with a water return interface of the welding gun, a two-position two-way normally open electromagnetic valve is arranged on the welding gun cooling water inlet pipe, The water storage device comprises a connecting rod, a water cylinder, a gas cylinder and a two-position five-way electromagnetic valve, the water cylinder comprises a cylinder body, a piston and a piston rod, one side of the piston of the water cylinder is connected with the piston rod, the other side of the piston of the water cylinder and the inner wall of the cylinder body form a water containing cavity, the water containing cavity is connected with the welding gun cooling water return pipe through a pipeline, the piston rod of the water cylinder and the piston rod of the gas cylinder are fixedly connected with the connecting rod respectively, the first working interface of the two-position five-way electromagnetic valve is connected with the rod cavity of the gas cylinder through a pipeline, and the second working interface of the two-position five-way electromagnetic valve is connected with the rodless cavity of the gas cylinder through a pipeline.

2. The water manager of claim 1, wherein, The two-position five-way electromagnetic valve is a two-position five-way double electric control electromagnetic valve or a two-position five-way single electric control electromagnetic valve.

3. The water manager of claim 1, wherein, The water manager further comprises a cooling water inlet main pipe, a cooling water return main pipe, a transformer cooling water inlet pipe and a transformer cooling water return pipe, the water inlet ends of the welding gun cooling water inlet pipe and the transformer cooling water inlet pipe are connected with the water outlet end of the cooling water inlet main pipe respectively, the water outlet ends of the transformer cooling water return pipe and the welding gun cooling water return pipe are connected with the water inlet ends of the cooling water return main pipe respectively, the water outlet end of the transformer cooling water inlet pipe is used for being connected with a water inlet interface of a transformer, and the water inlet end of the transformer cooling water return pipe is used for being connected with a water return interface of the transformer.

4. The water manager of claim 3, wherein, Flow meters are arranged on the welding gun cooling water return pipe and the transformer cooling water return pipe. And / or, one-way valves are arranged on the welding gun cooling water return pipe and the transformer cooling water return pipe.

5. The water manager of claim 3, wherein, The water manager further comprises a support, and the welding gun cooling water inlet pipe, the transformer cooling water inlet pipe, the transformer cooling water return pipe and the welding gun cooling water return pipe are arranged in parallel on the support.

6. The water manager of claim 5, wherein, The welding gun cooling water inlet pipe, the transformer cooling water inlet pipe, the transformer cooling water return pipe and the welding gun cooling water return pipe are fixedly connected with the support in the vertical direction, the cooling water inlet main pipe and the cooling water return main pipe are arranged in the horizontal direction, the lower ends of the welding gun cooling water inlet pipe and the transformer cooling water inlet pipe are connected with the cooling water inlet main pipe respectively, and the lower ends of the welding gun cooling water return pipe and the transformer cooling water return pipe are connected with the cooling water return main pipe respectively.

7. The water manager of claim 3, wherein, The water manager further comprises a first ball valve, a second ball valve, a third ball valve and a fourth ball valve, the gas outlet of the first ball valve is connected with the welding gun cooling water inlet pipe, the gas inlet of the first ball valve is used for being connected with a gas source, the gas outlet of the second ball valve is connected with the transformer cooling water inlet pipe, the gas inlet of the second ball valve is used for being connected with a gas source, the water inlet of the third ball valve is connected with the transformer cooling water return pipe, the water outlet of the third ball valve is used for discharging residual water and gas, the water inlet of the fourth ball valve is connected with the welding gun cooling water return pipe, and the water outlet of the fourth ball valve is used for discharging residual water and gas, The welding gun cooling water inlet pipe, the transformer cooling water inlet pipe, the transformer cooling water return pipe and the welding gun cooling water return pipe are each provided with a fifth ball valve for controlling the on-off of the medium, the fifth ball valve on the welding gun cooling water inlet pipe is arranged at the upstream end of the first ball valve, the fifth ball valve on the transformer cooling water inlet pipe is arranged at the upstream end of the second ball valve, the fifth ball valve on the transformer cooling water return pipe is arranged at the downstream end of the third ball valve, and the fifth ball valve on the welding gun cooling water return pipe is arranged at the downstream end of the fourth ball valve.

8. The water manager of claim 7, wherein, The gas inlets of the first ball valve and the second ball valve are each provided with a quick plug connector.

9. The water manager of claim 7, wherein, One side of the first ball valve, the second ball valve, the third ball valve and the fourth ball valve is provided with a first indicator. And / or, the water manager further comprises a support, the welding gun cooling water inlet pipe, the transformer cooling water inlet pipe, the transformer cooling water return pipe and the welding gun cooling water return pipe are arranged in parallel on the support, and the support is further provided with four second indicators, each of the second indicators corresponds to the position of the welding gun cooling water inlet pipe, the transformer cooling water inlet pipe, the transformer cooling water return pipe and the welding gun cooling water return pipe.

10. A spot welding robot, characterized by The spot welding robot comprises the water manager according to any one of claims 1 to 9.

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