Clamping tool for welding four-way valve

Abstract

The clamping tool is used for clamping and positioning a four-way valve and a four-way valve pipe fitting and comprises at least one four-way valve welding and cooling mechanism, the four-way valve welding and cooling mechanism is used for placing the four-way valve and injecting a cooling medium, and when the four-way valve is welded, the four-way valve is cooled and protected. According to the four-way valve welding fixture, the clamping precision of a four-way valve and a four-way valve pipe fitting can be improved, the welding quality between the four-way valve and the four-way valve pipe fitting can be improved, the situation that the welding quality is affected due to the fact that the layout temperature is too high in the welding process of the four-way valve is avoided, the requirement of flow line production is met, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to a clamping tool for welding a four-way valve. Background Art

[0002] The four-way valve is a control valve with four oil ports. The four-way valve is an indispensable component in refrigeration equipment. Its working principle is that when the solenoid valve coil is in the power-off state, the pilot slide valve moves left under the drive of the right compression spring, and the high-pressure gas enters the capillary tube and then enters the right end piston chamber. On the other hand, the gas in the left end piston chamber is discharged. Due to the pressure difference at both ends of the piston, the piston and the main slide valve move left, so that the exhaust pipe is connected to the outdoor unit pipe, and the other two pipes are connected, forming a refrigeration cycle.

[0003] During the welding process of the four-way valve, the four oil ports of the four-way valve need to be welded to corresponding four-way valve fittings respectively for connecting the muffler, gas-liquid separator or external pipeline. Since the installation positions and bending angles of the four-way valve fittings are different, the manual placement, clamping, rotation and other processes of the four-way valve and its four-way valve fittings are inefficient and cannot guarantee whether the connection is in place, which affects the welding quality of the four-way valve and reduces production efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a technical solution for a clamping tool for welding a four-way valve in view of the deficiencies in the prior art, which can not only improve the clamping accuracy of the four-way valve and its four-way valve pipe fittings, but also improve the welding quality between the four-way valve and the four-way valve pipe fittings, avoid affecting the welding quality due to excessively high layout temperature during the welding process of the four-way valve, meet the requirements of assembly line production, and improve processing efficiency.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A clamping tool for welding a four-way valve, used for clamping and positioning a four-way valve and a four-way valve pipe fitting, characterized in that:

[0007] At least one four-way valve welding cooling mechanism is used to place the four-way valve and inject cooling medium, so as to cool and protect the four-way valve when the four-way valve is welded.

[0008] Through the design of the above structure, not only the clamping accuracy of the four-way valve and its four-way valve pipe fittings can be improved, but also the welding quality between the four-way valve and the four-way valve pipe fittings can be improved, avoiding the influence of welding quality due to excessive layout temperature during the welding process of the four-way valve, meeting the requirements of assembly line production, and improving processing efficiency.

[0009] Furthermore, the four-way valve welding cooling mechanism includes a water trough, a water tank and a valve. The water tank is located on the inner side of the water trough. A first water outlet is provided at the bottom of the water tank. A drainage box is connected below the water trough. The drainage box is provided with a drainage hole. The drainage hole is connected to the first water outlet. The valve is arranged in the drainage box to control the connection between the first water outlet and the drainage hole. The four-way valve is first placed in the water tank for fixing, and then the cooling medium is introduced. The four-way valve can be cooled during the welding process to ensure the quality of the welding and reduce the scrap rate. After the welding is completed, the first water outlet and the drainage hole can be connected by opening the valve, and the water in the water tank is discharged through the drainage hole to reduce the weight of the clamping tooling and the four-way valve during transportation. The cooling medium in the water tank will shake during the movement. The overflowed cooling medium can be collected through the water trough to reduce the splashing of the cooling medium onto the workshop floor.

[0010] Furthermore, the water tank is provided with a water supply hole and a four-way valve support block. The water supply hole is used to inject cooling medium into the water tank. The four-way valve support block is used to support the four-way valve and position the four-way valve. When the four-way valve and its four-way valve pipe fittings are assembled, the cooling medium is injected into the water tank through the water supply hole.

[0011] Furthermore, a first fixing plate is provided on the top of the water tank, and a first arc-shaped groove is provided on the first fixing plate for positioning the interface of the placed four-way valve, thereby improving the clamping accuracy of the four-way valve and further improving the quality of welding.

[0012] Furthermore, the water tank is provided with a second water outlet hole for draining the water in the water tank, thereby reducing the weight during transfer and transportation and reducing the splashing of the cooling medium onto the workshop floor.

[0013] Furthermore, it also includes a base plate and a support frame, the base plate is connected to the sink through the support frame, and is used to support the sink and the water tank. The height of the sink and the water tank can be integrated through the base plate and the support frame to meet the height requirements of workers when assembling the four-way valve and its four-way valve fittings. At the same time, it is convenient to connect the sink and the water tank with the tooling plate, which is beneficial to water replenishment and drainage.

[0014] Furthermore, it also includes at least one pipe clamping mechanism, which is used to clamp and position the interface on the four-way valve and position the four-way valve pipe. The pipe clamping mechanism includes a push-pull component, a clamping component and a positioning component. The clamping component and the positioning component are both connected to the push-pull component. The push-pull component drives the clamping component and the positioning component to approach or move away from the interface of the four-way valve placed in the water tank, so as to clamp or loosen the four-way valve, facilitate disassembly and assembly of the four-way valve, and manually control the operation of the push-pull component to drive the clamping component and the positioning component to approach or move away from the water tank, thereby meeting the clamping requirements of the four-way valve and the four-way valve pipe.

[0015] Furthermore, the push-pull assembly includes a mounting plate, a slide rail, a slider, a support seat, a Z-shaped push-pull rod and an L-shaped rod. The slide rail and the support seat are both connected to the mounting plate, the L-shaped rod is connected to the slider, the slider slides along the slide rail, the slider is connected to a push-pull block, one end of the Z-shaped push-pull rod is rotatably connected to the support seat, and the other end is provided with a handle. The Z-shaped push-pull rod is rotatably connected to a rotating arm through a rotating shaft, and the other end of the rotating arm is rotatably connected to the push-pull block. By pushing the handle, the Z-shaped push-pull rod can be rotated along the support seat, and then the rotating arm can be driven to move through the rotating shaft, so that the push-pull block drives the slider and the L-shaped rod to move horizontally along the slide rail, thereby meeting the position adjustment requirements of the clamping assembly and the positioning assembly.

[0016] Furthermore, the clamping assembly includes a first connecting block and a horizontal plate, the horizontal plate is fixedly connected to the L-shaped rod through the first connecting block, and a clamping portion is integrally formed at one end of the horizontal plate close to the water tank, and a second arc-shaped groove is provided on the clamping portion for clamping or loosening the interface of the four-way valve placed in the water tank. The first connecting block improves the connection stability between the horizontal plate and the L-shaped rod, and the interface of the four-way valve can be clamped and positioned through the second arc-shaped groove on the clamping portion.

[0017] Furthermore, the positioning assembly includes a second connecting block, an adapter block, a column, a support plate and a positioning sleeve. The adapter block is connected to the first connecting block through the second connecting block, the support plate is connected to the adapter block through the column, and the positioning sleeve is arranged on the support plate. Through the design of the adapter block, the column and the support plate, the positioning sleeve can be driven to move to the desired position and then fixed, thereby meeting the assembly requirements between the four-way valve pipe fitting and the four-way valve and improving the welding quality. The second connecting block improves the installation stability of the adapter block.

[0018] Furthermore, it also includes at least one group of pipe clamping mechanisms, which are connected to the four-way valve welding cooling mechanism and are used to clamp the four-way valve pipe fittings. The pipe clamping mechanism includes a second fixed plate, a balance plate and at least one clamping unit. The second fixed plate is provided with a locking piece and a positioning pin. The balance plate is provided with a positioning hole and a through hole. The positioning pin is limited in the positioning hole, and the locking piece passes through the through hole. The fixed connection between the balance plate and the second fixed plate is achieved by rotating the locking piece. The clamping unit is detachably connected to the balance plate. The design of the locking piece and the positioning pin not only facilitates the installation and disassembly between the balance plate and the second fixed plate, but also improves the connection strength between the balance plate and the second fixed plate. The clamping unit is placed in a position where it shakes during the movement of the tooling plate, which affects the assembly accuracy between the four-way valve pipe fitting and the four-way valve, thereby affecting the quality of welding. The clamping unit is used to clamp and fix the four-way valve pipe fitting.

[0019] Furthermore, the clamping unit includes a vertical pole, a clamping block, a rotating part, a hanging rod and a clamping block. The rotating part is connected to the vertical pole through the clamping block, and the hanging rod is detachably connected to the rotating part. The clamping block is located at the end of the hanging rod and is used to clamp the four-way valve fitting. The height position of the clamping block can be adjusted by moving the rotating block up and down along the vertical pole. When it reaches the desired position, the clamping block and the vertical pole can be fixed by tightening the fastening screws. The rotating part can drive the hanging rod to rotate, thereby adjusting the angular position of the clamping block. After rotating to the desired angle, the rotating part can be fixed by tightening the fastening screws.

[0020] Furthermore, at least one mounting hole is provided on the balance plate, and the vertical rod is connected to the mounting hole, so as to facilitate installation and disassembly between the vertical rod and the balance plate. Meanwhile, the number of vertical rods can be increased or decreased according to the number and shape of the four-way valve pipe fittings.

[0021] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0022] 1. The present invention can not only improve the clamping accuracy of the four-way valve and its four-way valve pipe fittings, but also improve the welding quality between the four-way valve and the four-way valve pipe fittings, avoid affecting the welding quality due to excessive layout temperature during the welding process of the four-way valve, meet the requirements of assembly line production, and improve processing efficiency.

[0023] 2. The present invention first places the four-way valve in the water tank for fixation, and then introduces the cooling medium. The four-way valve can be cooled during the welding process to ensure the quality of welding and reduce the scrap rate. After the welding is completed, the first water outlet and the drain hole can be connected by opening the valve, and the water in the water tank is output through the drain hole, which reduces the weight of the clamping tooling and the four-way valve during transportation. The cooling medium in the water tank will shake during the movement, and the overflowed cooling medium can be collected through the water tank to reduce the splashing of the cooling medium onto the workshop floor.

[0024] 3. The push-pull assembly drives the clamping assembly and the positioning assembly to approach or move away from the interface of the four-way valve placed in the water tank, so as to clamp or loosen the four-way valve, which is convenient for disassembling and assembling the four-way valve. The push-pull assembly is manually controlled to drive the clamping assembly and the positioning assembly to approach or move away from the water tank, thereby meeting the clamping requirements of the four-way valve and four-way valve pipe fittings.

[0025] 4. The design of the locking piece and the positioning pin not only facilitates the installation and disassembly between the balance plate and the second fixed plate, but also improves the connection strength between the balance plate and the second fixed plate. The clamping unit shakes when following the movement of the tooling plate, which affects the assembly accuracy between the four-way valve fittings and the four-way valve, and further affects the quality of welding. The clamping unit is used to clamp and fix the four-way valve fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings:

[0027] Figure 1 This is a rendering of the effect of a four-way valve and a four-way valve pipe fitting clamped by a clamping tool for welding a four-way valve according to the present invention;

[0028] Figure 2 It is a structural schematic diagram of the present invention;

[0029] Figure 3 for Figure 2 Structural diagram of the middle A direction;

[0030] Figure 4 is a schematic diagram of the connection between the balancing plate and the second fixing plate in the present invention;

[0031] Figure 5 It is a schematic diagram of the connection between the four-way valve welding cooling mechanism and the second fixing plate and the pipe clamping mechanism in the present invention;

[0032] Figure 6 It is a structural schematic diagram of the pipe clamping mechanism in the present invention;

[0033] Figure 7 It is a structural schematic diagram of the four-way valve welding cooling mechanism in the present invention;

[0034] Figure 8 This is a rendering of the effect of removing the base plate and the support frame of the four-way valve welding cooling mechanism in the present invention.

[0035] In the figure: 1- four-way valve welding cooling mechanism; 101- bottom plate; 102- support frame; 103- water tank; 104- water tank; 105- valve; 106- water supply hole; 107- four-way valve support block; 108- first water outlet hole; 109- first fixing plate; 110- first arc-shaped slot; 111- second water outlet hole; 112- drainage box; 113- drainage hole;

[0036] 2-Pipe clamping mechanism;

[0037] 21-push-pull assembly; 2101-mounting plate; 2102-slide rail; 2103-sliding block; 2104-support seat; 2105-Z-shaped push-pull rod; 2106-handle; 2107-rotating shaft; 2108-rotating arm; 2109-push-pull block; 2110-L-shaped rod;

[0038] 22-clamping assembly; 2201-first connecting block; 2202-horizontal plate; 2203-clamping portion; 2204-second arc-shaped slot;

[0039] 23-positioning assembly; 2301-second connecting block; 2302-adapter block; 2303-column; 2304-support plate; 2305-positioning sleeve;

[0040] 3- pipe clamping mechanism; 301- second fixing plate; 302- balance plate; 303- locking member; 304- mounting hole; 305- positioning hole; 306- vertical rod; 307- clamping block; 308- rotating member; 309- hanging rod; 310- clamping block; 311- positioning pin. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0044] like Figures 1 to 8 As shown, a clamping tool for welding a four-way valve of the present invention is used for clamping and positioning a four-way valve and a four-way valve pipe fitting, comprising at least one four-way valve welding cooling mechanism 1, at least one pipe fitting clamping mechanism 2 and at least one group of pipe fitting clamping mechanisms 3.

[0045] The four-way valve welding cooling mechanism 1 is used to place the four-way valve and inject a cooling medium. When the four-way valve is welded, the four-way valve is cooled and protected; the cooling medium can be cooling water or cooling liquid.

[0046] The four-way valve welding cooling mechanism 1 includes a water tank 103, a water box 104 and a valve 105. The water box 104 is located inside the water tank 103. A first water outlet 108 is provided at the bottom of the water tank 104. A drainage box 112 is connected below the water tank 103. The drainage box 112 is provided with a drainage hole 113. The drainage hole 113 is connected to the first water outlet 108. The valve 105 is provided in the drainage box 112 to control the on-off between the first water outlet 108 and the drainage hole 113. First, place the four-way valve in the water tank 104. Fix it and then introduce the cooling medium. The four-way valve can be cooled during the welding process to ensure the quality of welding and reduce the scrap rate. After welding, the first water outlet 108 and the drain hole 113 can be connected by opening the valve 105, and the water in the water tank 104 is output through the drain hole 113 to reduce the weight of the clamping tooling and the four-way valve during transportation. The cooling medium in the water tank 104 will shake during the movement, and the overflowed cooling medium can be collected through the water tank 103 to reduce the splashing of the cooling medium onto the workshop floor.

[0047] The water tank 104 is provided with a water supply hole 106 and a four-way valve support block 107. The water supply hole 106 is used to inject cooling medium into the water tank 104. The four-way valve support block 107 is used to support the four-way valve and position the four-way valve. When the four-way valve and its four-way valve pipe fittings are assembled, the cooling medium is injected into the water tank 104 through the water supply hole 106.

[0048] A first fixing plate 109 is provided on the top of the water tank 104. A first arc-shaped groove 110 is provided on the first fixing plate 109 for positioning the interface of the placed four-way valve, improving the clamping accuracy of the four-way valve and further improving the quality of welding.

[0049] The water tank 103 is provided with a second water outlet 111 for draining the water in the water tank 103, thereby reducing the weight during transfer and transportation and reducing the splashing of the cooling medium onto the workshop floor.

[0050] The bottom plate 101 and the support frame 102 are also included. The bottom plate 101 is connected to the water tank 103 through the support frame 102, and is used to support the water tank 103 and the water tank 104. The heights of the water tank 103 and the water tank 104 can be integrated through the bottom plate 101 and the support frame 102 to meet the height requirements of workers when assembling the four-way valve and its four-way valve fittings. At the same time, it is convenient to connect the water tank 103 and the water tank 104 with the tooling plate, which is beneficial to water replenishment and drainage.

[0051] The pipe clamping mechanism 2 is used to clamp and position the interface on the four-way valve and to position the four-way valve pipe.

[0052] The pipe clamping mechanism 2 includes a push-pull component 21, a clamping component 22 and a positioning component 23. The clamping component 22 and the positioning component 23 are both connected to the push-pull component 21. The push-pull component 21 drives the clamping component 22 and the positioning component 23 to approach or move away from the interface of the four-way valve placed in the water tank 104, so as to clamp or loosen the four-way valve, which is convenient for disassembly and assembly of the four-way valve. The push-pull component 21 is manually controlled to work, thereby driving the clamping component 22 and the positioning component 23 to approach or move away from the water tank 104, thereby meeting the clamping requirements of the four-way valve and the four-way valve pipe.

[0053] The push-pull assembly 21 includes a mounting plate 2101, a slide rail 2102, a slider 2103, a support seat 2104, a Z-shaped push-pull rod 2105 and an L-shaped rod 2110. The slide rail 2102 and the support seat 2104 are both connected to the mounting plate 2101. The L-shaped rod 2110 is connected to the slider 2103. The slider 2103 slides along the slide rail 2102. The slider 2103 is connected to a push-pull block 2109. One end of the Z-shaped push-pull rod 2105 is rotatably connected to the support seat 2104, and the other end is provided with a handle 2106. The Z-shaped push-pull rod 2105 is rotatably connected to a rotating arm 2108 via a rotating shaft 2107. The other end of the rotating arm 2108 is rotatably connected to a push-pull block 2109. By pushing the handle 2106, the Z-shaped push-pull rod 2105 can be rotated along the support seat 2104, and then the rotating arm 2108 can be driven to move via the rotating shaft 2107, so that the push-pull block 2109 drives the slider 2103 and the L-shaped rod 2110 to move horizontally along the slide rail 2102, thereby meeting the position adjustment requirements of the clamping assembly 22 and the positioning assembly 23.

[0054] The clamping assembly 22 includes a first connecting block 2201 and a horizontal plate 2202. The horizontal plate 2202 is fixedly connected to the L-shaped rod 2110 through the first connecting block 2201. A clamping portion 2203 is integrally formed at one end of the horizontal plate 2202 close to the water tank 104. A second arc-shaped groove 2204 is provided on the clamping portion 2203 for clamping or loosening the interface of the four-way valve placed in the water tank 104. The first connecting block 2201 improves the connection stability between the horizontal plate 2202 and the L-shaped rod 2110. The interface of the four-way valve can be clamped and positioned through the second arc-shaped groove 2204 on the clamping portion 2203.

[0055] The positioning assembly 23 includes a second connecting block 2301, an adapter block 2302, a column 2303, a support plate 2304 and a positioning sleeve 2305. The adapter block 2302 is connected to the first connecting block 2201 through the second connecting block 2301, the support plate 2304 is connected to the adapter block 2302 through the column 2303, and the positioning sleeve 2305 is arranged on the support plate 2304. Through the design of the adapter block 2302, the column 2303 and the support plate 2304, the positioning sleeve 2305 can be driven to move to the required position and then fixed, thereby meeting the assembly requirements between the four-way valve pipe fitting and the four-way valve and improving the welding quality. The second connecting block 2301 improves the installation stability of the adapter block 2302.

[0056] The pipe fitting clamping mechanism 3 is connected to the four-way valve welding cooling mechanism 1 and is used for clamping the four-way valve pipe fitting.

[0057] The pipe clamping mechanism 3 includes a second fixed plate 301, a balancing plate 302 and at least one clamping unit. The second fixed plate 301 is provided with a locking piece 303 and a locating pin 311. The balancing plate 302 is provided with a locating hole 305 and a through hole. The locating pin 311 is limited in the locating hole 305. The locking piece 303 passes through the through hole. By rotating the locking piece 303, the fixed connection between the balancing plate 302 and the second fixed plate 301 is achieved. The clamping unit is detachably connected to the balancing plate 302. The design of the locking piece 303 and the locating pin 311 not only facilitates the installation and disassembly between the balancing plate 302 and the second fixed plate 301, but also improves the connection strength between the balancing plate 302 and the second fixed plate 301. The clamping unit is placed in a position where it shakes during the movement of the tooling plate, which affects the assembly accuracy between the four-way valve pipe fitting and the four-way valve, thereby affecting the quality of welding. The clamping unit is used to clamp and fix the four-way valve pipe fitting.

[0058] The clamping unit includes a vertical rod 306, a clamping block 307, a rotating member 308, a hanging rod 309 and a clamping block 310. The rotating member 308 is connected to the vertical rod 306 through the clamping block 307. The hanging rod 309 is detachably connected to the rotating member 308. The clamping block 310 is located at the end of the hanging rod 309 and is used to clamp the four-way valve pipe fitting. The height position of the clamping block 310 can be adjusted by moving the rotating block up and down along the vertical rod 306. When it reaches the desired position, the clamping block 307 and the vertical rod 306 can be fixed by tightening the fastening screws. The rotating member 308 can drive the hanging rod 309 to rotate, thereby adjusting the angular position of the clamping block 310. After rotating to the desired angle, the rotating member 308 can be fixed by tightening the fastening screws.

[0059] At least one mounting hole 304 is provided on the balancing plate 302, and the vertical rod 306 is connected to the mounting hole 304, so as to facilitate the installation and disassembly between the vertical rod 306 and the balancing plate 302. Meanwhile, the number of the vertical rod 306 can be increased or decreased according to the number and shape of the four-way valve pipe fittings.

[0060] Through the design of the above structure, not only the clamping accuracy of the four-way valve and its four-way valve pipe fittings can be improved, but also the welding quality between the four-way valve and the four-way valve pipe fittings can be improved, avoiding the influence of welding quality due to excessive layout temperature during the welding process of the four-way valve, meeting the requirements of assembly line production, and improving processing efficiency.

[0061] When the present invention is actually used, the four-way valve welding cooling mechanism 1 is first fixed to the tooling plate, and then the pipe clamping mechanism is installed on the tooling plate, and the pipe clamping mechanism is installed on one side of the four-way valve welding cooling mechanism 1. Then the assembled tooling is placed on the conveyor chain of the assembly line, and is transported to each station through the conveyor chain to achieve the installation of the four-way valve and the four-way valve pipe fittings, and clamping and positioning are performed. After the four-way valve pipe fittings are installed, they are transported to the water replenishment station, and cooling medium is injected into the water tank. The injection is stopped after the required amount is reached, and then the pipe is moved to the welding station for welding. After the welding is completed, the valve is pushed to make the cooling medium in the water tank flow out quickly, and the pipe is transported to the disassembly and assembly station by a robot.

[0062] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A clamping tool for welding a four-way valve, used for clamping and positioning a four-way valve and a four-way valve pipe fitting, characterized in that: include At least one four-way valve welding cooling mechanism is used to place the four-way valve and inject cooling medium, so as to cool and protect the four-way valve when the four-way valve is welded.

2. The four-way valve welding fixture according to claim 1, characterized in that: The four-way valve welding cooling mechanism includes a water sink, a water box and a valve. The water tank is located on the inner side of the water sink. A first water outlet is provided at the bottom of the water tank. A drainage box is connected below the water sink. The drainage box is provided with a drainage hole. The drainage hole is connected to the first water outlet. The valve is provided in the drainage box to control the connection between the first water outlet and the drainage hole.

3. The four-way valve welding fixture according to claim 2, characterized in that: The water tank is provided with a water replenishment hole and a four-way valve support block. The water replenishment hole is used to inject cooling medium into the water tank. The four-way valve support block is used to support the four-way valve and position the four-way valve.

4. The four-way valve welding fixture according to claim 2, characterized in that: A first fixing plate is provided on the top of the water tank, and a first arc-shaped groove is provided on the first fixing plate for positioning the interface of the four-way valve after placement.

5. The four-way valve welding fixture according to claim 2, characterized in that: The water tank is provided with a second water outlet hole for discharging water in the water tank.

6. The four-way valve welding fixture according to claim 2, characterized in that: It also includes a bottom plate and a support frame, wherein the bottom plate is connected to the water tank through the support frame and is used to support the water tank and the water tank.

7. The four-way valve welding fixture according to claim 1, characterized in that: It also includes at least one pipe clamping mechanism, which is used to clamp and position the interface on the four-way valve and position the four-way valve pipe. The pipe clamping mechanism includes a push-pull component, a clamping component and a positioning component. The clamping component and the positioning component are both connected to the push-pull component. The push-pull component drives the clamping component and the positioning component to approach or move away from the interface of the four-way valve placed in the water tank, so as to clamp or loosen the four-way valve, which is convenient for disassembly and assembly of the four-way valve.

8. The four-way valve welding fixture according to claim 7, characterized in that: The push-pull assembly includes a mounting plate, a slide rail, a slider, a support seat, a Z-shaped push-pull rod and an L-shaped rod. The slide rail and the support seat are both connected to the mounting plate. The L-shaped rod is connected to the slider. The slider slides along the slide rail. The slider is connected to a push-pull block. One end of the Z-shaped push-pull rod is rotatably connected to the support seat, and the other end is provided with a handle. The Z-shaped push-pull rod is rotatably connected to a rotating arm via a rotating shaft, and the other end of the rotating arm is rotatably connected to the push-pull block.

9. The four-way valve welding fixture according to claim 8, characterized in that: The clamping assembly includes a first connecting block and a horizontal plate, the horizontal plate is fixedly connected to the L-shaped rod through the first connecting block, and a clamping portion is integrally formed at one end of the horizontal plate close to the water tank, and a second arc-shaped groove is provided on the clamping portion for clamping or loosening the interface of the four-way valve placed in the water tank.

10. The four-way valve welding fixture according to claim 9, characterized in that: The positioning assembly includes a second connecting block, an adapter block, a column, a support plate and a positioning sleeve. The adapter block is connected to the first connecting block through the second connecting block, the support plate is connected to the adapter block through the column, and the positioning sleeve is arranged on the support plate.

11. The four-way valve welding fixture according to claim 1, characterized in that: It also includes at least one group of pipe clamping mechanisms, which are connected to the four-way valve welding cooling mechanism and are used to clamp the four-way valve pipes. The pipe clamping mechanism includes a second fixed plate, a balance plate and at least one clamping unit. The second fixed plate is provided with a locking piece and a positioning pin. The balance plate is provided with a positioning hole and a through hole. The positioning pin is limited to the positioning hole. The locking piece passes through the through hole. By rotating the locking piece, the fixed connection between the balance plate and the second fixed plate is achieved. The clamping unit is detachably connected to the balance plate.

12. A four-way valve welding fixture according to claim 11, characterized in that: The clamping unit includes a vertical rod, a clamping block, a rotating part, a hanging rod and a clamping block. The rotating part is connected to the vertical rod through the clamping block. The hanging rod is detachably connected to the rotating part. The clamping block is located at the end of the hanging rod and is used to clamp the four-way valve pipe fitting.

13. A four-way valve welding fixture according to claim 12, characterized in that: At least one mounting hole is provided on the balance plate, and the vertical rod is connected to the mounting hole.

Images