A welding positioning tool for processing water pump casing

Abstract

The present invention relates to the technical field of pump casing processing, and specifically to a welding positioning tool for processing a water pump casing, comprising a base and a fixing plate fixedly installed on the top thereof, a cylinder fixedly installed on the front of the fixing plate, a water supply mechanism for collecting welding slag is arranged on one side of the cylinder, and a water spray mechanism for cooling the pump casing is arranged on the protruding end of the cylinder, and a positioning mechanism for fixing the pump casing is arranged on the base on the front of the fixing plate; the welding slag generated during the welding process will be quickly cooled by the clean water stored in the pump casing to prevent the welding slag from adhering to the inner wall of the pump casing, thereby ensuring the product quality of the pump casing; at the same time, the clean water stored in the pump casing will also provide continuous cooling for the pump casing to prevent the edge of the pump casing from being overly hot, thereby damaging the limiting fence and the clamping push plate, thereby preventing the efficiency of fixing the subsequent pump casing from being affected; the clean water flows from the L-shaped water spray pipe to the arc surface mounting cover, and then flows along the arc surface mounting cover to the opening of the pump casing to evenly water-cool it.

Description

Technical Field

[0001] The invention relates to the technical field of pump casing processing, in particular to a welding positioning tool for processing a water pump casing. Background Art

[0002] The pump casing is an important part of the pump, usually used to accommodate the internal mechanical parts of the pump and protect these parts; the pump casing is usually made of metal or other strong materials to ensure that it can withstand the pressure and stress generated by the pump during operation. During the processing of the pump casing, it needs to be fixed and welded at its opening;

[0003] During the welding process at the opening of the pump casing, a small amount of welding slag falls into the pump casing, making it difficult to effectively clean the welding slag attached to the inner wall of the pump casing, thereby reducing the product quality of the pump casing. At the same time, after the welding is completed, impurities and dirt exist at the opening of the pump casing. Since the temperature at the opening of the pump casing has not dropped to a temperature for unloading materials, it is easy to cause harm to the operator unloading the materials, making it inconvenient to perform quick cleaning, thereby affecting the efficiency of welding. Summary of the invention

[0004] The technical problems solved by this solution are:

[0005] How to solve the problem that a small amount of welding slag falls into the pump casing, making it difficult to effectively clean the welding slag attached to the inner wall of the pump casing, thereby reducing the quality of the pump casing product;

[0006] How to solve the problem that the temperature at the opening of the pump casing has not dropped to the temperature for unloading materials, which may easily cause harm to the operator unloading the materials, make it inconvenient to perform quick cleaning, and affect the welding efficiency?

[0007] The object of the present invention can be achieved by the following technical scheme: A welding positioning tool for processing a water pump casing, comprising a base and a fixing plate fixedly installed on the top thereof, a longitudinally arranged cylinder fixedly installed on the front of the fixing plate, a water supply mechanism for collecting welding slag is arranged on one side of the cylinder, and a water spray mechanism for cooling the pump casing is arranged at the protruding end of the cylinder, and a positioning mechanism for fixing the pump casing is arranged on the base on the front of the fixing plate;

[0008] The water supply mechanism includes a water inlet cylinder fixedly connected to a fixed plate, the top of the water inlet cylinder is connected to a hose, and a lifting rod is movably inserted at the bottom of the water inlet cylinder, a first piston is fixedly installed on the top of the lifting rod, and a second piston is fixedly installed in the middle of the lifting rod, and a transmission unit for driving the lifting rod is arranged between the water inlet cylinder and the cylinder.

[0009] A further technical improvement of the present invention is that a water inlet pipe and a water outlet pipe are connected to the middle of the water inlet cylinder, the output end position of the water inlet pipe corresponds to the position of the first piston, the input end of the water outlet pipe is located between the first piston and the second piston, and the output end of the water outlet pipe is connected to a connector, and the output end position of the connector corresponds to the output end position of the pump casing.

[0010] A further technical improvement of the present invention is that the first piston and the second piston are both slidably connected to the inner wall of the water inlet cylinder.

[0011] A further technical improvement of the present invention is that the transmission unit includes a flip frame rotatably connected to the fixed plate through a pin shaft, one end of the flip frame is movably connected to the bottom end of the lifting rod through a first lever, and the other end of the flip frame is movably connected to the extended end of the cylinder through a second lever, and the pin shaft is arranged close to the first lever; by controlling the extended end of the cylinder to extend from the starting length to the set length, at this time, the bottom end of the positioning rod passes through the input port of the pump housing and enters the positioning groove, and the pump housing is further limited by the positioning rod cooperating with the positioning groove, and the second lever drives the flip frame to flip, so that the lifting rod rises, at this time, the first piston blocks half of the output end of the water inlet pipe, and the second piston blocks half of the input end of the water outlet pipe, so that the clean water injected into the water inlet cylinder from the water inlet pipe flows along the water outlet The pipe enters the pump casing, and the positioning rod blocks the input port of the pump casing, causing clean water to accumulate in the pump casing. When the clean water in the pump casing reaches the threshold, the extended end of the cylinder is controlled to extend to the longest, so that the bottom end of the positioning rod contacts the bottom of the positioning groove. At this time, the first piston is completely separated from the output end of the water inlet pipe and blocks the input end of the hose. The second piston completely blocks the input end of the water outlet pipe to avoid continuous injection of clean water into the pump casing. The clean water stored in the pump casing will quickly cool the welding slag generated during the welding process to prevent it from adhering to the inner wall of the pump casing, thereby ensuring the product quality of the pump casing. At the same time, the clean water stored in the pump casing will also provide continuous cooling for the pump casing to avoid excessive temperature at the edge of the pump casing, causing damage to the limit fence and the clamping push plate, thereby preventing it from affecting the efficiency of fixing the subsequent pump casing.

[0012] A further technical improvement of the present invention is that the water spraying mechanism includes a mounting frame fixedly connected to the extended end of the cylinder, a curved mounting cover is fixedly connected to the bottom end of the mounting frame, an L-shaped water spraying pipe is fixedly connected to the mounting frame, and the input end of the L-shaped water spraying pipe is connected to the output end of the hose.

[0013] The further technical improvement of the present invention is that: a positioning rod is fixedly installed at the bottom of the arc surface mounting cover, and there is a gap between the top of the arc surface mounting cover and the output end of the L-shaped water spray pipe; after the external welding device completes the welding of the pump casing opening, the extended end of the cylinder is first controlled to shrink to the starting length, and then controlled to shrink to the shortest. In the process of the extended end of the cylinder shrinking to the starting length, the positioning rod is drawn out from the positioning groove, so that the clean water in the pump casing carries the welding slag into the positioning groove, and then the welding slag is collected along the recovery pipe. In the process of the extended end of the cylinder shrinking from the starting length to the shortest, the first piston will move from the output end of the water inlet pipe to the input end of the water outlet pipe, so that the clean water flows to the top surface of the arc surface mounting cover through the hose and the L-shaped water spray pipe, and the clean water flows evenly along the arc surface mounting cover to the pump casing opening, and is evenly water-cooled, so that the temperature at the pump casing opening can be quickly reduced to a temperature at which the material can be unloaded, thereby avoiding damage to the unloading operator. At the same time, it is convenient to quickly clean the impurities and dirt at the pump casing opening to ensure the efficiency of welding.

[0014] A further technical improvement of the present invention is that the positioning mechanism includes a limiting fence fixedly mounted on the base, a slot for placing the output end of the pump casing is provided at the top of the side of the limiting fence close to the connecting head, a positioning slot is provided on the base in the middle of the limiting fence, the positioning slot is matched with the positioning rod, and a recovery pipe for collecting welding slag is fixedly inserted at the bottom of the positioning slot.

[0015] A further technical improvement of the present invention is that an electric push rod is fixedly installed on the base on the front side of the limiting fence, and the extended end of the electric push rod movably passes through the limiting fence and is fixedly installed with a clamping push plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When the present invention is in use, the extended end of the cylinder is controlled to extend from the starting length to the set length. At this time, the bottom end of the positioning rod penetrates the input port of the pump housing and enters the positioning groove. The pump housing is further limited by the positioning rod cooperating with the positioning groove, and the second lever drives the flip frame to flip, so that the lifting rod rises. At this time, the first piston blocks half of the output end of the water inlet pipe, and the second piston blocks half of the input end of the water outlet pipe, so that the clean water injected into the water inlet cylinder from the water inlet pipe enters the pump housing along the water outlet pipe. Since the positioning rod blocks the input port of the pump housing, clean water accumulates in the pump housing. When the clean water in the pump housing reaches the threshold, the control The extended end of the cylinder is extended to its longest length so that the bottom end of the positioning rod contacts the bottom of the positioning groove. At this time, the first piston is completely separated from the output end of the water inlet pipe and blocks the input end of the hose. The second piston completely blocks the input end of the water outlet pipe to avoid continuous injection of clean water into the pump casing. The clean water stored in the pump casing will quickly cool the welding slag generated during the welding process to prevent it from adhering to the inner wall of the pump casing, thereby ensuring the product quality of the pump casing. At the same time, the clean water stored in the pump casing will also provide continuous cooling for the pump casing to avoid excessive temperature at the edge of the pump casing, which will damage the limit fence and the clamping push plate and affect the efficiency of fixing the subsequent pump casing.

[0018] 2. When the present invention is in use, after the external welding device completes welding on the opening of the pump casing, the extended end of the cylinder is first controlled to shrink to the starting length, and then controlled to shrink to the shortest. In the process of shrinking the extended end of the cylinder to the starting length, the positioning rod is drawn out from the positioning groove, so that the clean water in the pump casing carries the welding slag into the positioning groove, and then the welding slag is collected along the recovery pipe. In the process of shrinking the extended end of the cylinder from the starting length to the shortest, the first piston will move from the output end of the water inlet pipe to the input end of the water outlet pipe, so that the clean water flows to the top surface of the arc surface mounting cover through the hose and the L-shaped water spray pipe. The clean water flows evenly along the arc surface mounting cover to the opening of the pump casing, and is evenly water-cooled, so that the temperature at the opening of the pump casing can be quickly reduced to a temperature at which the material can be unloaded, thereby avoiding damage to the unloading operator. At the same time, it is convenient to quickly clean the impurities and dirt at the opening of the pump casing, thereby ensuring the efficiency of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the water supply mechanism of the present invention;

[0022] Figure 3 For the present invention Figure 2 A magnified view of the structure at center;

[0023] Figure 4 It is a schematic diagram of the structure of the water spraying mechanism of the present invention;

[0024] Figure 5 It is a top view of the structure of the positioning mechanism of the present invention;

[0025] Figure 6 It is a structural stereoscopic schematic diagram of the positioning mechanism of the present invention.

[0026] In the figure: 1. water supply mechanism; 2. base; 3. positioning groove; 4. recovery pipe; 5. drainage hole; 6. positioning mechanism; 7. water spraying mechanism; 8. fixing plate; 9. cylinder; 101. water inlet pipe; 102. water outlet pipe; 103. connector; 104. first lever; 105. flip frame; 106. second lever; 107. water inlet cylinder; 108. second piston; 109. lifting rod; 110. first piston; 111. hose; 601. slot; 602. clamping push plate; 603. electric push rod; 604. limiting fence; 701. L-shaped water spraying pipe; 702. positioning rod; 703. arc surface mounting cover; 704. mounting frame. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 6 As shown, a welding positioning tool for processing a water pump casing comprises a base 2 and a fixing plate 8 fixedly mounted on the top thereof, a longitudinally arranged cylinder 9 is fixedly mounted on the front of the fixing plate 8, a water supply mechanism 1 for collecting welding slag is arranged on one side of the cylinder 9, and a water spray mechanism 7 for cooling the pump casing is arranged at the protruding end of the cylinder 9, and a positioning mechanism 6 for fixing the pump casing is arranged on the base 2 on the front of the fixing plate 8.

[0029] See also Figure 1-Figure 3 As shown, the water supply mechanism 1 includes a water inlet cylinder 107 fixedly connected to the fixed plate 8, the top of the water inlet cylinder 107 is connected to a hose 111, and a lifting rod 109 is movably inserted at the bottom of the water inlet cylinder 107, a first piston 110 is fixedly installed on the top of the lifting rod 109, and a second piston 108 is fixedly installed in the middle of the lifting rod 109, and a transmission unit for driving the lifting rod 109 is arranged between the water inlet cylinder 107 and the cylinder 9.

[0030] See also Figure 2 and Figure 3As shown, the middle part of the water inlet cylinder 107 is connected with a water inlet pipe 101 and a water outlet pipe 102, the output end position of the water inlet pipe 101 corresponds to the position of the first piston 110, the input end of the water outlet pipe 102 is located between the first piston 110 and the second piston 108, and the output end of the water outlet pipe 102 is connected with a connector 103, and the output end position of the connector 103 corresponds to the output end position of the pump casing.

[0031] See also Figure 3 As shown, the first piston 110 and the second piston 108 are both slidably connected to the inner wall of the water inlet cylinder 107 .

[0032] See also Figure 1 and Figure 2 As shown, the transmission unit includes a flip frame 105 rotatably connected to the fixed plate 8 through a pin shaft, one end of the flip frame 105 is movably connected to the bottom end of the lifting rod 109 through the first lever 104, and the other end of the flip frame 105 is movably connected to the extended end of the cylinder 9 through the second lever 106, and the pin shaft is arranged near the first lever 104; by controlling the extended end of the cylinder 9 to extend from the starting length to the set length, at this time, the bottom end of the positioning rod 702 passes through the input port of the pump housing and enters the positioning groove 3, and the pump housing is further limited by the positioning rod 702 cooperating with the positioning groove 3, and the second lever 106 drives the flip frame 105 to flip, so that the lifting rod 109 rises, at this time, the first piston 110 blocks half of the output end of the water inlet pipe 101, and the second piston 108 blocks half of the input end of the water outlet pipe 102, so that the clean water injected from the water inlet pipe 101 into the water inlet cylinder 107 , enters the pump casing along the water outlet pipe 102. Since the positioning rod 702 blocks the input port of the pump casing, clean water accumulates in the pump casing. When the clean water in the pump casing reaches the threshold, the extended end of the cylinder 9 is controlled to extend to the longest, so that the bottom end of the positioning rod 702 contacts the bottom of the positioning groove 3. At this time, the first piston 110 is completely separated from the output end of the water inlet pipe 101, and the input end of the hose 111 is blocked. The second piston 108 completely blocks the input end of the water outlet pipe 102 to avoid continuous injection of clean water into the pump casing. The clean water stored in the pump casing will quickly cool the welding slag generated during the welding process to prevent it from adhering to the inner wall of the pump casing, thereby ensuring the product quality of the pump casing. At the same time, the clean water stored in the pump casing will also provide continuous cooling for the pump casing to avoid excessive temperature at the edge of the pump casing, thereby damaging the limiting fence 604 and the clamping push plate 602, thereby preventing it from affecting the efficiency of fixing the subsequent pump casing.

[0033] See also Figure 1 and Figure 4As shown, the above-mentioned water spray mechanism 7 includes a mounting frame 704 fixedly connected to the protruding end of the cylinder 9, the bottom end of the mounting frame 704 is fixedly connected to a curved mounting cover 703, the mounting frame 704 is fixedly connected to an L-shaped water spray pipe 701, and the input end of the L-shaped water spray pipe 701 is connected to the output end of the hose 111.

[0034] See also Figure 4 As shown, a positioning rod 702 is fixedly installed at the bottom of the arc surface mounting cover 703, and there is a gap between the top of the arc surface mounting cover 703 and the output end of the L-shaped water spray pipe 701; after the external welding device completes the welding of the pump housing opening, the extended end of the cylinder 9 is first controlled to shrink to the starting length, and then controlled to shrink to the shortest. In the process of shrinking the extended end of the cylinder 9 to the starting length, the positioning rod 702 is drawn out from the positioning groove 3, so that the clean water in the pump housing carries the welding slag into the positioning groove 3, and then the welding slag is collected along the recovery pipe 4, and at the extended end of the cylinder 9 During the process of shrinking from the initial length to the shortest, the first piston 110 will move from the output end of the water inlet pipe 101 to the input end of the water outlet pipe 102, so that clean water flows to the top surface of the arc surface mounting cover 703 through the hose 111 and the L-shaped water spray pipe 701, and the clean water flows evenly along the arc surface mounting cover 703 to the opening of the pump casing, and is evenly cooled by water, so that the temperature at the opening of the pump casing can be quickly reduced to a temperature at which the material can be unloaded, thereby avoiding harm to the operator unloading the material. At the same time, it is convenient to quickly clean the impurities and dirt at the opening of the pump casing to ensure the efficiency of welding.

[0035] See also Figure 1 , Figure 5 and Figure 6 As shown, the above-mentioned positioning mechanism 6 includes a limiting fence 604 fixedly mounted on the base 2, and a slot 601 for placing the pump casing output end is provided at the top of the side of the limiting fence 604 close to the connecting head 103, and a positioning slot 3 is provided on the base 2 in the middle of the limiting fence 604, the positioning slot 3 is adapted to the positioning rod 702, and a recovery pipe 4 for collecting welding slag is fixedly inserted at the bottom of the positioning slot 3.

[0036] See also Figure 5 and Figure 6 As shown, an electric push rod 603 is also fixedly installed on the base 2 on the front side of the above-mentioned limiting fence 604. The extended end of the electric push rod 603 movably passes through the limiting fence 604 and is fixedly installed with a clamping push plate 602.

[0037] See also Figure 5 and Figure 6 As shown, a drainage hole 5 is provided on the top surface of the base 2 , the top opening of the drainage hole 5 is located in the middle of the limiting fence 604 , and the drainage hole 5 is arranged close to the electric push rod 603 .

[0038] Working principle: When the present invention is used, first, Figure 1 , Figure 5 and Figure 6 As shown, the pump housing is placed in the middle of the limiting fence 604 so that the output end of the pump housing is located in the card slot 601, and then the extended end of the electric push rod 603 is controlled to extend to the longest, and the pump housing is pushed to move by the clamping push plate 602, so that the clamping push plate 602 cooperates with the inner wall of the limiting fence 604 to clamp and fix the pump housing; Figure 1 , Figure 4 and Figure 5 As shown in FIG. 1 , the extended end of the control cylinder 9 is extended from the starting length to the set length. At this time, the bottom end of the positioning rod 702 passes through the input port of the pump housing and enters the positioning groove 3. The pump housing is further limited by the positioning rod 702 cooperating with the positioning groove 3. The second lever 106 drives the turning frame 105 to turn over, so that the lifting rod 109 rises. At this time, Figure 2 and Figure 3 As shown, the first piston 110 blocks half of the output end of the water inlet pipe 101, and the second piston 108 blocks half of the input end of the water outlet pipe 102, so that the clean water injected from the water inlet pipe 101 into the water inlet cylinder 107 enters the pump housing along the water outlet pipe 102. Since the positioning rod 702 blocks the input port of the pump housing, clean water accumulates in the pump housing. When the clean water in the pump housing reaches a threshold, the extended end of the cylinder 9 is controlled to extend to the longest, so that the bottom end of the positioning rod 702 contacts the bottom of the positioning groove 3. At this time, the first piston 110 and the water inlet pipe 101 are in contact with each other. The output end is completely separated, and the input end of the hose 111 is blocked. The second piston 108 completely blocks the input end of the water outlet pipe 102 to prevent continuous injection of clean water into the pump casing. The clean water stored in the pump casing will quickly cool the welding slag generated during the welding process to prevent it from adhering to the inner wall of the pump casing, thereby ensuring the product quality of the pump casing. At the same time, the clean water stored in the pump casing will also provide continuous cooling for the pump casing to prevent the edge of the pump casing from being overly hot, thereby preventing damage to the limiting fence 604 and the clamping push plate 602, thereby preventing it from affecting the efficiency of fixing the subsequent pump casing. Figure 2-Figure 4As shown, after the external welding device completes welding on the pump casing opening, the extended end of the cylinder 9 is first controlled to shrink to the starting length, and then controlled to shrink to the shortest. In the process of shrinking the extended end of the cylinder 9 to the starting length, the positioning rod 702 is drawn out from the positioning groove 3, so that the clean water in the pump casing carries the welding slag into the positioning groove 3, and then the welding slag is collected along the recovery pipe 4. In the process of shrinking the extended end of the cylinder 9 from the starting length to the shortest, the first piston 110 moves from the output end of the water inlet pipe 101 to the input end of the water outlet pipe 102, so that the clean water flows to the top surface of the arc surface mounting cover 703 through the hose 111 and the L-shaped water spray pipe 701. The clean water flows evenly along the arc surface mounting cover 703 to the pump casing opening, and is evenly cooled by water, so that the temperature at the pump casing opening can be quickly reduced to a temperature at which the material can be unloaded, thereby avoiding damage to the unloading operator. At the same time, it is convenient to quickly clean the impurities and dirt at the pump casing opening to ensure the welding efficiency. Figure 5 and Figure 6 As shown, the clean water at the opening of the cooling pump housing will be discharged from the middle of the limiting fence 604 along the drainage hole 5.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A welding positioning tool for processing a water pump casing, comprising a base (2) and a fixing plate (8) fixedly mounted on the top of the base, characterized in that: A cylinder (9) is fixedly mounted on the front of the fixing plate (8); a water supply mechanism (1) for collecting welding slag is provided on one side of the cylinder (9); a water spray mechanism (7) for cooling the pump casing is provided at the protruding end of the cylinder (9); and a positioning mechanism (6) for fixing the pump casing is provided on the base (2) on the front of the fixing plate (8); The water supply mechanism (1) comprises a water inlet cylinder (107) fixedly connected to a fixed plate (8); the top of the water inlet cylinder (107) is connected to a hose (111); a lifting rod (109) is movably inserted at the bottom of the water inlet cylinder (107); a first piston (110) is fixedly mounted on the top of the lifting rod (109); a second piston (108) is fixedly mounted in the middle of the lifting rod (109); a transmission unit for driving the lifting rod (109) is provided between the water inlet cylinder (107) and the cylinder (9); the middle of the water inlet cylinder (107) is connected to a water inlet pipe (101) and a water outlet pipe (102); the output end of the water inlet pipe (101) is located at the same position as the first piston (110); The position of the piston (110) corresponds to that of the pump housing, the input end of the water outlet pipe (102) is located between the first piston (110) and the second piston (108), and the output end of the water outlet pipe (102) is connected to a connector (103), the output end position of the connector (103) corresponds to the output end position of the pump housing, and the first piston (110) and the second piston (108) are both slidably connected to the inner wall of the water inlet cylinder (107); the transmission unit comprises a flip frame (105) rotatably connected to the fixed plate (8), one end of the flip frame (105) is movably connected to the bottom end of the lifting rod (109), and the other end of the flip frame (105) is movably connected to the protruding end of the cylinder (9); The water spray mechanism (7) comprises a mounting frame (704) fixedly connected to the extended end of the cylinder (9); a curved mounting cover (703) is fixedly connected to the bottom end of the mounting frame (704); an L-shaped water spray pipe (701) is fixedly connected to the mounting frame (704); an input end of the L-shaped water spray pipe (701) is connected to an output end of a hose (111); a positioning rod (702) is fixedly mounted on the bottom of the curved mounting cover (703); and a gap exists between the top of the curved mounting cover (703) and the output end of the L-shaped water spray pipe (701).

2. A welding positioning tool for processing a water pump casing according to claim 1, characterized in that: The positioning mechanism (6) comprises a limiting fence (604) fixedly mounted on the base (2); a slot (601) for placing the output end of the pump casing is provided at the top of the side of the limiting fence (604) close to the connector (103); a positioning slot (3) is provided on the base (2) in the middle of the limiting fence (604); the positioning slot (3) is matched with the positioning rod (702), and a recovery pipe (4) for collecting welding slag is fixedly inserted at the bottom of the positioning slot (3).

3. A welding positioning tool for processing a water pump casing according to claim 2, characterized in that: An electric push rod (603) is also fixedly mounted on the base (2) on the front side of the limiting fence (604); the extended end of the electric push rod (603) movably penetrates the limiting fence (604) and is fixedly mounted with a clamping push plate (602).

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