Method of using a welded wall valve

Abstract

The application discloses a use method of a switching type wall-embedded valve welding tool, which comprises the following steps: S11, prefabricating a main plate, the top end of the main plate is inwardly recessed to form a clearance, the middle part of the main plate is hollowed to form a through hole, and the upper end of the through hole and the lower end of the clearance are separated by a reinforcing rib; S21, a user holds the switching type wall-embedded valve and holds it above the welding tool, inserts the switching type wall-embedded valve into the welding tool from top to bottom, and exposes the top end of a vertical part outside the welding tool through the clearance; S22, seven welding guns are evenly arranged around the pipeline nozzle at the upper end of the vertical part, and welding is simultaneously performed; and the heat generated during the welding of the switching type wall-embedded valve can be dissipated through the through hole.

Description

[0001] This application is a divisional application. The original application was filed on February 22, 2024, with application number CN202410196290.5, and the invention title was: Configuration and usage method of a quick clamping device for a switching type embedded wall valve. Technical Field

[0002] This invention relates to the field of welding technology, and specifically to the method of using welding fixtures for switching embedded wall valves. Background Technology

[0003] In the welding process, welding fixtures are needed to fix the workpiece on the machine tool and improve the welding accuracy and quality. Traditional welding fixtures often fix the workpiece directly to the fixture through threaded connections, which is simple in structure and provides relatively stable clamping effect.

[0004] However, for workpieces with different structures, welding fixtures with different structures are often required. (See attached image.) Figure 2 The prior art includes a switching type embedded wall valve 2, which includes a tubular vertical part 210, a bent part 220 protruding to the right from the bottom of the vertical part 210, and a pipe 230 hollowly disposed inside the vertical part 210 and the bent part 220; mounting feet are provided on the four corners of the switching type embedded wall valve 2, including a first mounting foot 211 and a second mounting foot 212 located on the left and right sides of the top of the vertical part 210, a third mounting foot 213 located on the left side of the bottom of the vertical part 210, and a fourth mounting foot 214 located on the right side of the bent part 220; the bottom ends of the first mounting foot 211 and the second mounting foot 212 are both inclined, and the two inclined surfaces of the first mounting foot 211 and the second mounting foot 212 combine to form a V-shaped structure; during the manufacturing process of the switching type embedded wall valve 2, a plug needs to be welded at the pipe opening of the pipe 230 located at the top of the vertical part 210.

[0005] For the switching wall-mounted valve 2, if the aforementioned traditional welding fixture is used, the following problems exist: When fixing the switching wall-mounted valve 2 to the welding fixture, the first mounting foot 211 and the second mounting foot 212 need to be screwed onto the welding fixture. However, because the first mounting foot 211 and the second mounting foot 212 are close to the pipe 230 on the vertical part 210, the threads on the bolts are easily burned and deformed under the high temperature of the welding torch, making it impossible to smoothly remove the switching wall-mounted valve 2 from the welding fixture. In order to ensure uniform welding, when welding the switching wall-mounted valve 2, seven welding torches need to be evenly arranged around the pipe opening of the upper end of the vertical part 210 and welded simultaneously. Therefore, it is necessary to avoid the welding torches being blocked by the fixture, thereby avoiding problems such as overheating of the front end, overheating and burning of the threads, and poor welding of the rear end due to inconsistent flame coverage. However, if slots are made on the fixture to avoid the pipe opening of pipe 230, the material of the welding fixture will soften under high temperature. Since the overall weight of the switching wall-mounted valve 2 is relatively heavy, the thickness and strength of the two sides of the slot on the welding fixture are relatively thin and low, making it easy to be deformed under pressure. Summary of the Invention

[0006] In view of the aforementioned defects or deficiencies in the prior art, it is desirable to provide a method for using a welding fixture for a switching embedded wall valve. By recessing a relief opening at the top of the main plate, the pipe at the upper end of the main body is exposed within the welding fixture, allowing multiple welding torches to be evenly arranged around the pipe opening for welding. Through-holes are provided to dissipate the heat generated during welding of the switching embedded wall valve and to reduce the overall weight of the welding fixture. The reinforcing ribs connect to the left and right sides of the slot on the main plate, thereby strengthening the main plate and preventing deformation due to heat.

[0007] The effects of this invention are achieved as follows:

[0008] This application provides a method for using a welding fixture for a switching type embedded wall valve, including the following steps:

[0009] I. Configure welding fixtures:

[0010] S11, prefabricated motherboard, with an inwardly recessed relief opening at the top of the motherboard, and a through hole in the middle of the motherboard, with a reinforcing rib separating the upper end of the through hole from the lower end of the relief opening.

[0011] II. Use of welding fixtures:

[0012] S21, the user holds the switching wall-mounted valve and lifts it above the welding fixture, inserts the switching wall-mounted valve into the welding fixture from top to bottom, so that the switching wall-mounted valve and the welding fixture are relatively fixed in the horizontal direction; the top of the vertical part is exposed to the welding fixture through the clearance opening.

[0013] S22, 7 welding torches are evenly arranged around the pipe opening at the upper end of the vertical section and welding is carried out simultaneously; the heat generated during the welding of the switchable wall-mounted valve can be dissipated through the through hole.

[0014] Furthermore, the welding fixture includes a snap-fit ​​assembly, which includes a first snap-fit ​​member and a second snap-fit ​​member; the first snap-fit ​​member and the second snap-fit ​​member are disposed on the upper part of the front end face of the motherboard and are symmetrically arranged on the left and right sides, and the top of the first snap-fit ​​member and the second snap-fit ​​member are respectively recessed with a first slot and a second slot.

[0015] Furthermore, the first snap-fit ​​component is located on the left side of the main board and its top end is tilted towards the lower right, while the second snap-fit ​​component is located on the right side of the main board and its top end is tilted towards the lower left, so that the first and second snap-fit ​​slots combine to form a V-shaped groove. In step S21, the V-shaped inclined first and second mounting feet can be snapped into the V-shaped groove formed by the combination of the first and second snap-fit ​​slots, so that the switching wall-mounted valve and the welding fixture are relatively fixed in the horizontal direction.

[0016] Furthermore, the first slot has an inclination angle of 10-40° relative to the horizontal plane, and the second slot has an inclination angle of 20-50° relative to the horizontal plane. The inclination angles of the first and second slots are consistent with the inclination angles of the first and second mounting feet, which allows the switching wall-mounted valve to be more stably engaged with the engagement assembly and is less prone to shaking.

[0017] Furthermore, the snap-fit ​​assembly includes at least one abutment; the abutment is disposed on the front end face of the main board and is located below the first snap-fit ​​and the second snap-fit; in step S21, the lower part of the switching wall-mounted valve abuts against the abutment.

[0018] Furthermore, only one abutment is provided on the main board, which is located below the first snap-fit ​​component; in step S21, the left side of the switching wall-mounted valve is supported by the abutment component, which can effectively prevent the switching wall-mounted valve from shifting to the left and keep the vertical part in a vertical state.

[0019] Furthermore, the right side wall of the abutment is inclined downwards to the right, and the right side wall of the abutment is configured such that the center line of the vertical part and the center line of the main board coincide. In step S21, the third mounting foot abuts against the right side wall of the abutment.

[0020] Furthermore, the cross-sections of the first and second slots are L-shaped, so that in step S21, the bottom surface of the switching wall-mounted valve can be in close contact with the front end surface of the main board.

[0021] Furthermore, a number of first connection holes are provided at the lower part of the front face of the motherboard, and the first connection holes are configured to connect to the servo moving block on the machine tool.

[0022] Furthermore, a mounting groove is recessed inward at the lower part of the front face of the motherboard, and the first connection hole is set in the mounting groove. The mounting groove is configured to snap onto the servo moving block on the machine tool. By snapping the servo moving block into the mounting groove, the connection between the servo moving block and the motherboard is made more stable.

[0023] The method of using the welding fixture for the switching embedded wall valve provided in this application involves recessing a relief opening at the top of the main body, allowing the pipe at the upper end of the main body to be exposed within the welding fixture. This enables multiple welding torches to be evenly arranged around the pipe opening for welding, effectively avoiding problems such as overheating at the front end, overheating and burning of threads, and incomplete welding at the rear end caused by inconsistent flame coverage. The through-hole allows the heat generated during welding of the switching embedded wall valve to dissipate, effectively preventing overheating and deformation of the main body due to excessive heat in the valve. Furthermore, the hollowed-out main body reduces the overall weight of the welding fixture, lessening the load on the machine tool. The through-hole and the relief opening are separated by reinforcing ribs, with both ends of the reinforcing ribs connecting to the left and right sides of the main body slot, thus strengthening the main body and preventing deformation after heating. Attached Figure Description

[0024] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0025] Figure 1 A three-dimensional structural diagram of the welding fixture used to hold the switching valve according to an embodiment of this application;

[0026] Figure 2 A front structural diagram of the switching embedded wall valve in the vertical state provided in the embodiment of this application;

[0027] Figure 3 This is a right-side structural schematic diagram of the switching embedded wall valve provided in an embodiment of this application;

[0028] Figure 4 A three-dimensional structural schematic diagram of the welding fixture provided in the embodiments of this application;

[0029] Figure 5 A schematic diagram of the front structure of the motherboard provided in an embodiment of this application;

[0030] Figure 6 This is a bottom view of the motherboard provided in an embodiment of this application;

[0031] Figure 7 A schematic diagram of the back structure of the first and second card connectors provided in the embodiments of this application;

[0032] Figure 8 A cross-sectional structural schematic diagram of the first snap-fit ​​component provided in an embodiment of this application;

[0033] Figure 9 A cross-sectional structural schematic diagram of the second snap-fit ​​component provided in an embodiment of this application;

[0034] Figure 10 A three-dimensional structural diagram of the abutment member provided in the embodiments of this application;

[0035] Figure 11 A flowchart illustrating the usage method of the welding fixture for the switching embedded wall valve provided in this application embodiment.

[0036] The reference numerals in the attached drawings are as follows: 1-Main board, 101-First connecting hole, 110-First snap-fit, 111-First slot, 112-Second connecting hole, 120-Second snap-fit, 121-Second slot, 122-Third connecting hole, 130-Abutting part, 131-Fourth connecting hole, 140-Allowing opening, 141-Reinforcing rib, 150-Through hole, 160-Mounting groove, 2-Switching wall-mounted valve, 210-Vertical part, 211-First mounting foot, 212-Second mounting foot, 213-Third mounting foot, 214-Fourth mounting foot, 220-Bending part, 230-Pipe. Detailed Implementation

[0037] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0038] Please refer to the attached document. Figure 1-11 This application provides a method for using a welding fixture for a switching type embedded wall valve, including the following steps:

[0039] I. Configure welding fixtures:

[0040] S11, prefabricated motherboard 1, the lower part of the front end face of motherboard 1 is provided with a plurality of first connection holes 101, the first connection holes 101 are configured to connect to the servo moving block on the machine tool;

[0041] S12, install the snap-fit ​​assembly, which includes a first snap-fit ​​member 110, a second snap-fit ​​member 120, and at least one abutment member 130; the first snap-fit ​​member 110 and the second snap-fit ​​member 120 are disposed on the upper part of the front end face of the motherboard 1 and are symmetrically arranged left and right; the first snap-fit ​​member 110 is located on the left side of the motherboard 1 and the top of the first snap-fit ​​member 110 is inclined to the lower right; the second snap-fit ​​member 120 is located on the right side of the motherboard 1 and the top of the second snap-fit ​​member 120 is inclined to the lower left; the tops of the first snap-fit ​​member 110 and the second snap-fit ​​member 120 are respectively recessed with a first slot 111 and a second slot 121, such that the first slot 111 and the second slot 121 combine to form a V-shaped groove; the abutment member 130 is disposed on the front end face of the motherboard 1 and is located below the first snap-fit ​​member 110 and the second snap-fit ​​member 120;

[0042] II. Use of welding fixtures:

[0043] S21, the user holds the switching wall-mounted valve 2 and lifts it above the welding fixture, aligning the first mounting foot and the second mounting foot on the vertical part 210 with the first slot 111 and the second slot 121 on the main board 1, and then inserts the switching wall-mounted valve 2 into the welding fixture from top to bottom, so that the V-shaped inclined first mounting foot 211 and the second mounting foot 212 can be inserted into the V-shaped groove formed by the combination of the first slot 111 and the second slot 121, so that the switching wall-mounted valve 2 and the welding fixture are relatively fixed in the horizontal direction; and the lower part of the switching wall-mounted valve 2 abuts against the abutment member 130;

[0044] S22, the user releases the switching embedded wall valve 2. Under its own weight, the switching embedded wall valve 2 can be stably locked into the first slot 111 and the second slot 121. The lower part of the switching embedded wall valve 2 is abutted by the abutment member 130 so that it will not shake. This not only keeps the switching embedded wall valve 2 fixed relative to the welding fixture, but also keeps the vertical part 210 in a vertical state. Thus, the switching embedded wall valve 2 is quickly clamped into the welding fixture.

[0045] In this embodiment, the V-shaped groove formed by the combination of the first slot 111 and the second slot 121 engages the first mounting foot 211 and the second mounting foot 212, thereby allowing the upper part of the switching wall-mounted valve 2 to be stably installed on the welding fixture. Furthermore, the abutment member 130 abuts against the lower part of the switching wall-mounted valve 2, preventing the lower part of the switching wall-mounted valve 2 from swinging to the left due to its own weight imbalance. Thus, both the upper and lower sides of the switching wall-mounted valve 2 are clamped by the welding fixture, ensuring that the switching wall-mounted valve 2 remains stable after installation, and the vertical part 210 remains in a vertical position. Although the horizontal movement of the switching wall-mounted valve 2 is restricted after installation on the welding fixture, it can still move vertically upwards directly, thereby achieving the purpose of directly removing it from the welding fixture. The installation operation can be completed simply by aligning the switching wall-mounted valve 2 with the engaging component and inserting it vertically downwards. Therefore, the installation and disassembly operation of the switching wall-mounted valve 2 is very simple and convenient.

[0046] The motherboard 1 has two first connection holes 101 on the lower part of its front end face. The motherboard 1 is threadedly connected to the servo moving block on the machine tool through the first connection holes 101. By connecting the motherboard 1 to the servo moving block of the machine tool, the welding fixture can automatically enter and exit the welding operation with the servo mechanism, improving the convenience of the welding operation. Furthermore, the threaded connection fixes the motherboard 1 and the servo moving block, ensuring a stable connection and facilitating the loading and unloading of the welding fixture.

[0047] Preferably, the snap-fit ​​assembly is connected to the motherboard 1 via a threaded connection. The first snap-fit ​​member 110 has two second connection holes 112, through which it is screwed to the motherboard 1. The second snap-fit ​​member 120 has two third connection holes 122, through which it is screwed to the motherboard 1. The abutment member 130 has two fourth connection holes 131, through which it is screwed to the motherboard 1. The threaded connection provides sufficient connection strength while facilitating the installation and removal of the snap-fit ​​assembly. Of course, in other embodiments of this application, the connection between the snap-fit ​​assembly and the motherboard 1 can also be welding, snap-fitting, etc.

[0048] In some embodiments of this application, only one abutment 130 is provided on the motherboard 1, and in step S21, the abutment 130 is located below the first snap-fit ​​member 110.

[0049] In this embodiment, since the bent portion 220 protrudes to the right relative to the vertical portion 210, when the vertical portion 210 is kept vertical, the weight on the right side of the switching wall-mounted valve 2 is heavier. In order to maintain balance, the switching wall-mounted valve 2 tends to move to the left. Therefore, by simply providing an abutment 130 below the first snap-fit ​​110, when the switching wall-mounted valve 2 is installed on the welding fixture, the left side of the switching wall-mounted valve 2 is supported by the abutment 130, which can effectively prevent the switching wall-mounted valve 2 from shifting to the left and keep the vertical portion 210 in a vertical state. This not only saves the manufacturing cost of the welding fixture, but also reduces the overall weight of the welding fixture.

[0050] In some embodiments of this application, the right side wall of the abutment 130 is inclined downwards to the right, and the right side wall of the abutment 130 is configured such that the center line of the vertical part 210 and the center line of the main board 1 are aligned. In step S21, the third mounting foot 213 abuts against the right side wall of the abutment 130. When the switching wall-mounted valve 2 is installed on the welding fixture, the third mounting foot 213 located on the bottom left side of the switching wall-mounted valve 2 abuts against the right side wall of the positioning member 130, so that the lower part of the switching wall-mounted valve 2 is supported and the vertical part 210 remains vertical. Because the right side wall of the positioning member 130 is inclined, the third mounting foot 213 is less likely to slide on the side wall when it abuts, so that the third mounting foot 213 can abut against the positioning member 130 more naturally and stably.

[0051] In some embodiments of this application, the first slot 111 has an inclination angle of 10-40° relative to the horizontal plane, and the second slot 121 has an inclination angle of 20-50° relative to the horizontal plane. The inclination angles of the first slot 111 and the second slot 121 are consistent with the inclination angles of the first mounting foot 211 and the second mounting foot 212, so that the shape of the V-groove fits into the shape of the two mounting feet on the left and right sides of the main body 210, thereby enabling the switching wall-mounted valve 2 to be more stably engaged with the engagement assembly and less prone to shaking.

[0052] In some embodiments of this application, the first slot 111 and the second slot 121 have an L-shaped cross-section, so that in step S21, the bottom surface of the switching wall-mounted valve 2 can be tightly attached to the front end surface of the main board 1. This prevents the switching wall-mounted valve 2 from wobbling back and forth relative to the main board 1, further improving the stability of the connection between the switching wall-mounted valve 2 and the welding fixture.

[0053] In some embodiments of this application, the top of the main board 1 is recessed inward to form a relief opening 140. In step S21, after the switching type wall-mounted valve 2 is installed on the welding fixture, the top of the vertical part 210 is exposed to the welding fixture through the relief opening 140.

[0054] In this embodiment, in order to ensure uniform welding, when welding the switching wall-mounted valve 2, seven welding torches need to be evenly arranged around the pipe opening of the upper end of the vertical part 210 and welded simultaneously. Therefore, it is necessary to avoid the welding torches being blocked by the main board 1. By recessing the relief opening 140 at the top of the main board 1, the pipe 230 at the upper end of the main body 210 is exposed to the welding fixture, so that multiple welding torches can be evenly arranged around the pipe opening of the pipe 230 for welding, effectively avoiding problems such as overheating of the front end, overheating and burning of the threads, and poor welding of the rear end caused by inconsistent flame coverage.

[0055] In some embodiments of this application, the motherboard 1 has a through hole 150 in the middle, and the upper end of the through hole 150 and the lower end of the clearance opening 140 are separated by a reinforcing rib 141.

[0056] In this embodiment, by setting through holes 150, the heat generated during the welding of the switching wall-mounted valve 2 can be dissipated through the through holes 150, effectively preventing the main board 1 from overheating and deforming due to excessive heat in the switching wall-mounted valve 2; in addition, the hollowing out of the main board 1 can reduce the overall weight of the welding fixture and reduce the load on the machine tool.

[0057] During the welding process, the welding fixture softens under high temperatures. Because the switching wall-mounted valve 2 is relatively heavy, the two sides of the welding fixture at the slot are thin and have low strength, making them prone to deformation under pressure. Therefore, the through hole 150 and the clearance opening 140 are separated by a reinforcing rib 141. The two ends of the reinforcing rib 141 connect to the left and right sides of the slot on the main board 1, thereby strengthening the main board 1 and preventing it from deforming after heating.

[0058] Of course, in other embodiments of this application, when the welding fixture is used to clamp other lighter workpieces, the through hole 150 and the clearance opening 140 may not be separated by a reinforcing rib 141, so that the through hole 150 and the clearance opening 140 are connected into a slot, thereby further reducing the overall weight of the welding fixture and reducing the load.

[0059] In some embodiments of this application, the lower part of the front end face of the motherboard 1 is recessed inward to form a mounting groove 160, and the first connection hole 101 is disposed in the mounting groove 160. The mounting groove 160 is configured to snap onto the servo moving block on the machine tool. By snapping the servo moving block into the mounting groove 160, the connection between the servo moving block and the motherboard 1 is made more stable, and the welding fixture is prevented from falling off the servo moving block due to unstable connection.

[0060] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise stated, "a plurality of" means three or more.

[0061] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A method for using a welding fixture for a switching type embedded wall valve, characterized in that, Includes the following steps: I. Configure welding fixtures: S11, prefabricated main board (1), the top of the main board (1) is recessed inward with a relief opening (140), the middle part of the main board (1) is hollowed out with a through hole (150), the upper end of the through hole (150) and the lower end of the relief opening (140) are separated by a reinforcing rib (141). II. Use of welding fixtures: S21. The user holds the switchable wall-mounted valve (2) and lifts it above the welding fixture, inserts the switchable wall-mounted valve (2) into the welding fixture from top to bottom, so that the switchable wall-mounted valve (2) and the welding fixture are relatively fixed in the horizontal direction; the top of the vertical part (210) is exposed to the welding fixture through the clearance opening (140); S22, 7 welding torches are evenly arranged around the pipe opening of the upper end pipe (230) of the vertical part (210) and welding is carried out at the same time; the heat generated by the welding of the switching wall valve (2) can be dissipated through the through hole (150).

2. The method of using the welding fixture for the switching type embedded wall valve according to claim 1, characterized in that, The welding fixture includes a snap-fit ​​assembly, which includes a first snap-fit ​​member (110) and a second snap-fit ​​member (120). The first snap-fit ​​member (110) and the second snap-fit ​​member (120) are disposed on the upper part of the front end face of the motherboard (1) and are arranged symmetrically on the left and right. The top ends of the first snap-fit ​​member (110) and the second snap-fit ​​member (120) are respectively recessed with a first slot (111) and a second slot (121).

3. The method of using the welding fixture for the switching type embedded wall valve according to claim 2, characterized in that, The first snap-fit ​​component (110) is located on the left side of the main board (1) and the top of the first snap-fit ​​component (110) is inclined to the lower right. The second snap-fit ​​component (120) is located on the right side of the main board (1) and the top of the second snap-fit ​​component (120) is inclined to the lower left, so that the first slot (111) and the second slot (121) are combined to form a V-shaped groove. In step S21, the V-shaped inclined first mounting foot (211) and the second mounting foot (212) can be snapped into the V-shaped groove formed by the combination of the first slot (111) and the second slot (121), so that the switching wall-mounted valve (2) and the welding fixture are relatively fixed in the horizontal direction.

4. The method of using the welding fixture for the switching type embedded wall valve according to claim 3, characterized in that, The first slot (111) has an inclination angle of 10-40° relative to the horizontal plane, and the second slot (121) has an inclination angle of 20-50° relative to the horizontal plane.

5. The method of using the welding fixture for the switching type embedded wall valve according to claim 2, characterized in that, The snap-fit ​​assembly includes at least one abutment (130); the abutment (130) is disposed on the front end face of the main board (1), and the abutment (130) is located below the first snap-fit ​​(110) and the second snap-fit ​​(120); in step S21, the lower part of the switching wall-mounted valve (2) abuts against the abutment (130).

6. The method of using the welding fixture for the switching type embedded wall valve according to claim 5, characterized in that, Only one abutment (130) is provided on the main board (1), and the abutment (130) is located below the first snap-fit ​​(110); in step S21, the left side of the switching wall-mounted valve (2) is supported by the abutment (130), which can effectively prevent the switching wall-mounted valve (2) from shifting to the left, so that the vertical part (210) remains vertical.

7. The method of using the welding fixture for the switching type embedded wall valve according to claim 6, characterized in that, The right side wall of the abutment (130) is inclined to the lower right. The right side wall of the abutment (130) is configured to keep the center line of the vertical part (210) and the center line of the main board (1) coincide. In step S21, the third mounting foot (213) abuts against the right side wall of the abutment (130).

8. The method of using the welding fixture for the switching type embedded wall valve according to claim 2, characterized in that, The first slot (111) and the second slot (121) have L-shaped cross sections, so that in step S21, the bottom surface of the switching wall valve (2) can be in close contact with the front end surface of the main board (1).

9. The method of using the welding fixture for the switching type embedded wall valve according to claim 1, characterized in that, The motherboard (1) has several first connection holes (101) at the lower part of the front end face. The first connection holes (101) are configured to connect to the servo moving block on the machine tool.

10. The method of using the welding fixture for the switching type embedded wall valve according to claim 9, characterized in that, The lower part of the front end face of the motherboard (1) is recessed inward to form a mounting groove (160), and the first connecting hole (101) is provided in the mounting groove (160). The mounting groove (160) is configured to attach a servo moving block on the machine tool.

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