Bathroom pipe fitting welding device

Abstract

The invention relates to the technical field of pipeline welding, in particular to a bathroom pipe fitting welding device which comprises a bottom plate, a telescopic air cylinder is fixedly arranged on the upper surface of the bottom plate, a mounting plate is fixedly arranged at the telescopic end of the telescopic air cylinder, and a fixing block is further fixedly arranged on the upper surface of the bottom plate. Supporting strips which are symmetrically distributed are fixedly arranged on the upper surface of the fixing block, a movable opening is formed in the outer wall of the mounting plate, a sliding block is movably arranged in the movable opening, a mounting opening is formed in the outer wall of the sliding block, a vertical cylinder is fixedly arranged in the mounting opening, and the clamping mechanism is arranged on the outer side of the fixing block. The fixing block is used for fixing a to-be-welded pipe fitting above the fixing block; and the positioning mechanism is arranged above the bottom plate. According to the butt joint device, accurate butt joint of to-be-welded position points can be achieved, the welding accuracy is effectively improved, welding parts are more convenient and faster to assemble and disassemble, the welding efficiency is greatly improved, and the using effect is better.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline welding, and in particular to a bathroom pipe welding device. Background Art

[0002] As people's living standards continue to improve, higher and higher requirements are placed on the quality and production efficiency of bathroom products. In the manufacturing process of bathroom products, welding between pipe fittings is an important link.

[0003] At present, the existing welding fixtures have poor versatility and cannot accurately align the welded parts with the welding position points. Moreover, the operation of traditional fixtures is often cumbersome and requires a lot of time to load and unload and adjust the pipe fittings, which reduces production efficiency and cannot meet the needs of the modern sanitary ware production industry for efficient and high-precision welding operations. Therefore, it is urgent to design a sanitary ware pipe welding device to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the defects in the prior art and to propose a sanitary pipe welding device.

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

[0006] A bathroom pipe welding device comprises a bottom plate, a telescopic cylinder is fixedly arranged on the upper surface of the bottom plate, and a mounting plate is fixedly arranged on the telescopic end of the telescopic cylinder, a fixing block is also fixedly arranged on the upper surface of the bottom plate, and symmetrically distributed supporting strips are fixedly arranged on the upper surface of the fixing block, a movable opening is opened on the outer wall of the mounting plate, and a slider is movably arranged in the movable opening, a mounting opening is opened on the outer wall of the slider, and a vertical cylinder is fixedly arranged in the mounting opening, and further comprises:

[0007] A clamping mechanism, which is arranged outside the fixing block and is used to fix the pipe to be welded above the fixing block;

[0008] A positioning mechanism, which is arranged above the bottom plate and is used to align the welding position of the pipe to be welded with the vertical cylinder before the clamping mechanism clamps the pipe to be welded;

[0009] The limiting mechanism is arranged in the vertical cylinder and is used to limit the pipe to be welded in the vertical cylinder and align the central axis of the pipe to be welded with the central axis of the vertical cylinder.

[0010] As a further solution of the present invention: the clamping mechanism includes a mounting frame fixedly arranged on both sides of the fixed block, an electric telescopic cylinder is fixedly arranged through the outer wall of the mounting frame, and a push plate is fixedly arranged at the telescopic end of the electric telescopic cylinder, and displacement rods distributed at equal distances are fixedly arranged on the outer wall of the push plate close to the mounting frame, and the displacement rods penetrate the mounting frame, oblique clamping plates are fixedly arranged on the ends of the displacement rods, and the oblique clamping plates are staggered, and rubber sheets are also fixedly arranged on the outer walls of the oblique clamping plates.

[0011] As a further solution of the present invention: the positioning mechanism includes a limit frame fixedly arranged on the upper surface of the base plate, a moving block movably arranged in the limit frame, rollers distributed at equal distances are fixedly arranged on the upper and lower surfaces of the moving block, and the rollers are located in the limit frame, a vertical rod is also fixedly arranged on the upper surface of the moving block, and a baffle is fixedly arranged on the top of the vertical rod, a lifting plate is sleeved on the outer side of the vertical rod, a grip rod is fixedly arranged on the upper surface of the lifting plate, and a conical block is fixedly arranged on the lower surface of the lifting plate, a first spring is also sleeved on the outer side of the vertical rod, one end of the first spring is connected to the upper surface of the moving block, and the other end of the first spring is connected to the lower surface of the lifting plate.

[0012] As a further solution of the present invention: the limiting mechanism includes a fixing frame which is equidistantly distributed in a ring shape on the outer wall of the vertical cylinder, the outer wall of the fixing frame is movably provided with a telescopic rod, and the telescopic rod passes through the vertical cylinder, one end of the telescopic rod is fixedly provided with a clip, and the clip is located in the vertical cylinder, the cross-section of the clip is V-shaped, the other end of the telescopic rod is fixedly provided with a baffle, and the outer side of the telescopic rod is sleeved with a second spring, one end of the second spring is connected to the baffle, and the other end of the second spring is connected to the outer wall of the fixing frame, the outer wall of the vertical cylinder is also provided with a moving opening, and the clip is located in the moving opening, a supporting assembly is also provided above the vertical cylinder, which is used to apply a downward supporting force to the pipe fitting to be welded in the vertical cylinder when the mounting plate moves downward, and a fixing assembly is also provided on the outer side of the slider, which is used to fix the slider in the moving opening.

[0013] As a further solution of the present invention: the supporting assembly includes a vertical cylinder fixedly arranged on the upper surface of the slider, and a lifting rod is movably arranged in the vertical cylinder, a supporting plate is fixedly arranged on the top of the lifting rod, and a rubber pad is fixedly arranged on the lower surface of the supporting plate, a third spring is fixedly connected to the bottom end of the lifting rod, and the end of the third spring is connected to the bottom inner wall of the vertical cylinder, a blocking rod is fixedly connected to the outer wall of the lifting rod, a limiting opening is opened on the outer side of the vertical cylinder, and the blocking rod is located in the limiting opening.

[0014] As a further solution of the present invention: the fixing assembly includes a fixing frame fixedly arranged on the outer wall of the slider, the outer wall of the fixing frame is provided with a threaded hole, and a screw is threadedly connected in the threaded hole, an adjusting wheel is fixedly arranged at one end of the screw, and a pressure plate is fixedly arranged at the other end of the screw, and the pressure plate is located in the fixing frame.

[0015] As a further solution of the present invention: the upper surface of the bottom plate is further provided with card slots which are distributed at equal distances, and card members are carded in the card slots.

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

[0017] The present invention provides a bathroom pipe welding device, in which the main pipe to be welded can be placed on a support bar above a fixing block, and the main pipe to be welded can be clamped and fixed by a clamping mechanism, and before clamping and fixing, the position of the main pipe to be welded can be adjusted by a positioning mechanism, so that the welding position point of the pipe to be welded is aligned with the vertical cylinder, and then the auxiliary pipe to be welded can be inserted into the vertical cylinder, and under the limiting action of the limiting mechanism, the central axis of the auxiliary pipe to be welded can be exactly aligned with the central axis of the vertical cylinder, so that the bottom end of the auxiliary pipe to be welded is exactly aligned with the welding position point on the surface of the main pipe to be welded, and then the auxiliary pipe to be welded can be stretched to the vertical cylinder to ensure that the welding position point is aligned with the vertical cylinder. The retractable cylinder drives the mounting plate to move downward, and the mounting plate can drive the vertical cylinder to move downward together, and the auxiliary pipe fitting to be welded in the vertical cylinder moves downward together, until the bottom end of the auxiliary pipe fitting to be welded is aligned with the welding position point on the upper surface of the main pipe fitting to be welded. At this time, the welding operation can be carried out to weld the auxiliary pipe fitting to the welding position point of the main pipe fitting. When the welding is completed, the mounting plate can be driven upward again by the retractable cylinder. At this time, the auxiliary pipe fitting will automatically move out of the vertical cylinder, and then the clamping mechanism of the main pipe fitting can be released, so that the main pipe fitting and the auxiliary pipe fitting welded with it can be taken away together, which greatly improves the welding efficiency and welding accuracy, and the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a sanitary pipe welding device from a first perspective provided by an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of a half-section structure of a bathroom pipe welding device provided in an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the structure of a slider in a bathroom pipe welding device provided by an embodiment of the present invention;

[0021] Figure 4 A schematic diagram of the structure of a clamping mechanism in a bathroom pipe welding device provided by an embodiment of the present invention;

[0022] Figure 5A schematic diagram of the structure of a positioning mechanism in a bathroom pipe welding device provided by an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of the structure of a vertical cylinder in a bathroom pipe welding device provided by an embodiment of the present invention;

[0024] Figure 7 A schematic diagram of a half-section structure of a vertical tube in a bathroom pipe welding device provided by an embodiment of the present invention;

[0025] Figure 8 A schematic structural diagram of a bathroom pipe welding device from a second perspective provided in an embodiment of the present invention.

[0026] In the figure: 101-bottom plate, 102-telescopic cylinder, 103-mounting plate, 104-fixed block, 105-movable port, 106-slider, 107-vertical cylinder, 108-support bar, 201-mounting frame, 202-electric telescopic cylinder, 203-displacement rod, 204-push plate, 205-oblique clamping plate, 206-rubber sheet,

[0027] 301-limiting frame, 302-moving block, 303-roller, 304-lifting plate, 305-vertical rod, 306-blocking piece, 307-first spring, 308-grip rod, 309-conical block, 401-fixed frame,

[0028] 402-telescopic rod, 403-baffle, 404-second spring, 405-clip, 406-moving port, 501-vertical cylinder, 502-lifting rod, 503-limiting port, 504-third spring, 505-baffle,

[0029] 506-abutment plate, 507-rubber pad, 601-fixed frame, 602-pressure plate, 603-screw, 604-adjusting wheel, 701-card slot, 702-card member. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] like Figure 1-Figure 8As shown, a sanitary pipe welding device provided by an embodiment of the present invention includes a base plate 101, a telescopic cylinder 102 is fixedly provided on the upper surface of the base plate 101, and a mounting plate 103 is fixedly provided at the telescopic end of the telescopic cylinder 102, a fixing block 104 is also fixedly provided on the upper surface of the base plate 101, and symmetrically distributed supporting strips 108 are fixedly provided on the upper surface of the fixing block 104, a movable opening 105 is provided on the outer wall of the mounting plate 103, and a slider 106 is movably provided in the movable opening 105, and a mounting opening is provided on the outer wall of the slider 106, and A vertical cylinder 107 is fixedly arranged in the installation opening, and also includes: a clamping mechanism, which is arranged at the outside of the fixing block 104 and is used to fix the pipe to be welded above the fixing block 104; a positioning mechanism, which is arranged above the bottom plate 101 and is used to align the welding position point of the pipe to be welded with the vertical cylinder 107 before the clamping mechanism clamps the pipe to be welded; a limiting mechanism, which is arranged in the vertical cylinder 107 and is used to limit the pipe to be welded in the vertical cylinder 107 and align the central axis of the pipe to be welded with the central axis of the vertical cylinder 107.

[0032] The main pipe to be welded can be placed on the support bar 108 above the fixing block 104, and the main pipe to be welded can be clamped and fixed by the clamping mechanism. Before clamping and fixing, the position of the main pipe to be welded can be adjusted by the positioning mechanism so that the welding position point of the pipe to be welded is aligned with the vertical cylinder 107, and then the auxiliary pipe to be welded can be inserted into the vertical cylinder 107, and under the limiting action of the limiting mechanism, the central axis of the auxiliary pipe to be welded can be just aligned with the central axis of the vertical cylinder 107, so that the bottom end of the auxiliary pipe to be welded is just aligned with the welding position point on the surface of the main pipe to be welded, and at this time, the mounting plate 10 is driven by the telescopic cylinder 102 3, the mounting plate 103 can drive the vertical cylinder 107 to move downward together, and the auxiliary pipe fittings to be welded in the vertical cylinder 107 move downward together, until the bottom end of the auxiliary pipe fittings to be welded fits with the welding position point on the upper surface of the main pipe fitting to be welded, and then the welding operation can be carried out to weld the auxiliary pipe fittings to the welding position point of the main pipe fitting. When the welding is completed, the mounting plate 103 can be driven to move upward again by the telescopic cylinder 102, and the auxiliary pipe fittings will automatically move out of the vertical cylinder 107, and then the clamping mechanism of the main pipe fitting is released, and the main pipe fitting and the auxiliary pipe fittings welded therewith can be taken away together, which greatly improves the welding efficiency and welding accuracy, and has a better use effect.

[0033] As an embodiment of the present invention, please refer to Figure 4The clamping mechanism includes a mounting frame 201 fixedly arranged on both sides of the fixed block 104, an electric telescopic cylinder 202 is fixedly arranged on the outer wall of the mounting frame 201, and a push plate 204 is fixedly arranged on the telescopic end of the electric telescopic cylinder 202, and a displacement rod 203 distributed at an equal distance is fixedly arranged on the outer wall of the push plate 204 close to the mounting frame 201, and the displacement rod 203 penetrates the mounting frame 201, and an inclined clamping plate 205 is fixedly arranged on the end of the displacement rod 203, and the inclined clamping plates 205 are staggered. A rubber sheet 206 is also fixedly arranged on the outer wall of the inclined clamping plate 205. When the main pipe to be welded is placed on the support bar 108, the push plate 204 can be driven to move by the electric telescopic cylinder 202, and the push plate 204 can drive the inclined clamping plate 205 to move through the displacement rod 203, so that the rubber sheet 206 on the outer wall of the inclined clamping plate 205 fits with the outer wall of the main pipe to be welded, so as to fix the main pipe to be welded.

[0034] As an embodiment of the present invention, please refer to Figure 1 and Figure 5 The positioning mechanism includes a limit frame 301 fixedly arranged on the upper surface of the bottom plate 101, a moving block 302 is movably arranged in the limit frame 301, and rollers 303 distributed at equal distances are fixedly arranged on the upper and lower surfaces of the moving block 302, and the rollers 303 are located in the limit frame 301, a vertical rod 305 is also fixedly arranged on the upper surface of the moving block 302, and a blocking piece 306 is fixedly arranged on the top of the vertical rod 305, a lifting plate 304 is sleeved on the outer side of the vertical rod 305, a gripping rod 308 is fixedly arranged on the upper surface of the lifting plate 304, and a conical block 309 is fixedly arranged on the lower surface of the lifting plate 304, and a first spring 307 is also sleeved on the outer side of the vertical rod 305, one end of the first spring 307 is connected to the upper surface of the moving block 302, and the other end of the first spring 307 is connected to the lifting plate 3 04 is connected to the lower surface of the main pipe part to be welded, and when the main pipe part to be welded is placed on the support bar 108, the gripping rod 308 can be held to drive the lifting plate 304 to move upward, so that the first spring 307 is stretched, and the lifting plate 304 is moved laterally at the same time, so that the lifting plate 304 moves to the top of the main pipe part to be welded, and at the same time, the conical block 309 is aligned with and inserted into the pre-opened welding hole on the surface of the main pipe part to be welded, and then the main part to be welded is clamped by the clamping mechanism to ensure that the pre-opened welding hole on the surface of the main pipe part to be welded is just aligned with the central axis of the vertical cylinder 107, and then the lifting plate 304 is removed from above the main pipe part to be welded, and then the auxiliary pipe part in the vertical cylinder 107 can be connected with the main pipe part for welding operation, and the positioning of the positioning mechanism can effectively improve the welding accuracy and achieve better use effect.

[0035] As an embodiment of the present invention, please refer to Figure 3 , Figure 6 and Figure 7The limiting mechanism includes a fixing frame 401 which is equidistantly distributed in a ring shape on the outer wall of the vertical cylinder 107. A telescopic rod 402 is movably arranged on the outer wall of the fixing frame 401, and the telescopic rod 402 passes through the vertical cylinder 107. A clip 405 is fixedly arranged at one end of the telescopic rod 402, and the clip 405 is located in the vertical cylinder 107. The cross-section of the clip 405 is V-shaped. A baffle 403 is fixedly arranged at the other end of the telescopic rod 402, and a second spring 404 is sleeved on the outer side of the telescopic rod 402. One end of the second spring 404 is connected to the baffle 403, and the other end of the second spring 404 is connected to the outer wall of the fixing frame 401. The outer wall of the vertical cylinder 107 is also provided with a moving opening 406, and the clip 405 is located at the moving opening. In the movable mouth 406, a supporting component is also provided above the vertical cylinder 107, which is used to apply a downward supporting force to the pipe to be welded in the vertical cylinder 107 when the mounting plate 103 moves downward. A fixing component is also provided on the outer side of the slider 106, which is used to fix the slider 106 in the movable mouth 105. When the auxiliary pipe to be welded is placed in the vertical cylinder 107, the auxiliary pipe will first push the clamp 405 to the sides, so that the second spring 404 on the outer side of the telescopic rod 402 is stretched until the auxiliary pipe moves between the clamps 405. Under the elastic force of the second spring 404, the clamp 405 can clamp the auxiliary pipe, and make the central axis of the auxiliary pipe consistent with the central axis of the vertical cylinder 107, so as to achieve better use effect.

[0036] As an embodiment of the present invention, please refer to Figure 3 The holding assembly includes a vertical cylinder 501 fixedly arranged on the upper surface of the slider 106, and a lifting rod 502 is movably arranged in the vertical cylinder 501, a support plate 506 is fixedly arranged on the top of the lifting rod 502, and a rubber pad 507 is fixedly arranged on the lower surface of the support plate 506, a third spring 504 is fixedly connected to the bottom end of the lifting rod 502, and the end of the third spring 504 is connected to the bottom inner wall of the vertical cylinder 501, a stopper 505 is fixedly connected to the outer wall of the lifting rod 502, and a limited position opening 503 is provided on the outer side of the vertical cylinder 501, and the stopper 505 is located at the limit position. In the position opening 503, when the telescopic cylinder 102 drives the mounting plate 103 to move downward, the auxiliary pipe fitting in the vertical tube 107 will contact the main pipe fitting above the bottom plate 101, and as the mounting plate 103 moves further downward, the top of the auxiliary pipe fitting will contact the rubber pad 507 on the lower surface of the support plate 506, so that the support plate 506 drives the lifting rod 502 to move in the vertical tube 501, so that the third spring 504 is stretched, and then the support plate 506 applies a downward holding force to the auxiliary pipe fitting, so that the auxiliary pipe fitting is more stable during the welding process and the use effect is better.

[0037] As an embodiment of the present invention, please refer to Figure 3The fixing component includes a fixing frame 601 fixedly arranged on the outer wall of the slider 106, a threaded hole is opened on the outer wall of the fixing frame 601, and a screw 603 is threadedly connected in the threaded hole, an adjusting wheel 604 is fixedly arranged on one end of the screw 603, and a pressure plate 602 is fixedly arranged on the other end of the screw 603, and the pressure plate 602 is located in the fixing frame 601, the slider 106 can be flexibly moved in the movable opening 105, so that the position of the vertical cylinder 107 can be adjusted conveniently. When the vertical cylinder 107 is adjusted to a suitable position, the screw 603 can be driven to rotate by rotating the adjusting wheel 604, and the screw 603 drives the pressure plate 602 to move, so that the pressure plate 602 abuts against the outer wall of the mounting plate 103, which can lock the position of the slider 106, and is very convenient to use.

[0038] As an embodiment of the present invention, please refer to Figure 1 The upper surface of the bottom plate 101 is also provided with equally spaced card slots 701, and card members 702 are carded in the card slots 701. When placing the main pipe fittings, the end of the main pipe fittings can be made to abut against one side of the card member 702, so as to quickly determine the position of the main pipe fittings. When welding the same batch of bathroom pipe fittings, there is no need to frequently adjust the position of the vertical cylinder 107, which effectively improves the welding efficiency. Moreover, the card member 702 can be inserted into different card slots 701 according to the different sizes of the main pipe fittings to adjust the position of the card member 702, ensuring that the main pipe fittings are in a suitable position, and achieving better use effect.

[0039] When in use, the main pipe to be welded can be placed on the support bar 108 above the fixing block 104, and the main pipe to be welded can be clamped and fixed by the clamping mechanism. Before clamping and fixing, the position of the main pipe to be welded can be adjusted by the positioning mechanism so that the welding position point of the pipe to be welded is aligned with the vertical cylinder 107, and then the auxiliary pipe to be welded can be inserted into the vertical cylinder 107, and under the limiting action of the limiting mechanism, the central axis of the auxiliary pipe to be welded can be just aligned with the central axis of the vertical cylinder 107, so that the bottom end of the auxiliary pipe to be welded is just aligned with the welding position point on the surface of the main pipe to be welded, and at this time, the mounting plate is driven by the telescopic cylinder 102 103 moves downward, and the mounting plate 103 can drive the vertical cylinder 107 to move downward together, and the auxiliary pipe fitting to be welded in the vertical cylinder 107 moves downward together, until the bottom end of the auxiliary pipe fitting to be welded fits with the welding position point on the upper surface of the main pipe fitting to be welded, at this time, the welding operation can be carried out to weld the auxiliary pipe fitting to the welding position point of the main pipe fitting. When the welding is completed, the mounting plate 103 can be driven upward again by the telescopic cylinder 102, at this time, the auxiliary pipe fitting will automatically move out of the vertical cylinder 107, and then the clamping mechanism of the main pipe fitting is released, so that the main pipe fitting and the auxiliary pipe fitting welded therewith can be taken away together, which greatly improves the welding efficiency and welding accuracy, and the use effect is better.

[0040] It should be particularly noted that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A sanitary pipe welding device, comprising a base plate, characterized in that: A telescopic cylinder is fixedly arranged on the upper surface of the bottom plate, and a mounting plate is fixedly arranged on the telescopic end of the telescopic cylinder. A fixing block is also fixedly arranged on the upper surface of the bottom plate, and symmetrically distributed supporting strips are fixedly arranged on the upper surface of the fixing block. A movable opening is opened on the outer wall of the mounting plate, and a slider is movably arranged in the movable opening. A mounting opening is opened on the outer wall of the slider, and a vertical cylinder is fixedly arranged in the mounting opening. The device also includes: A clamping mechanism, which is arranged outside the fixing block and is used to fix the pipe to be welded above the fixing block; A positioning mechanism, which is arranged above the bottom plate and is used to align the welding position of the pipe to be welded with the vertical cylinder before the clamping mechanism clamps the pipe to be welded; The limiting mechanism is arranged in the vertical cylinder and is used to limit the pipe to be welded in the vertical cylinder and align the central axis of the pipe to be welded with the central axis of the vertical cylinder.

2. A sanitary pipe welding device according to claim 1, characterized in that: The clamping mechanism includes a mounting frame fixedly arranged on both sides of the fixed block, an electric telescopic cylinder is fixedly arranged through the outer wall of the mounting frame, and a push plate is fixedly arranged at the telescopic end of the electric telescopic cylinder, and displacement rods distributed at equal distances are fixedly arranged on the outer wall of the push plate close to the mounting frame, and the displacement rods penetrate the mounting frame, and oblique clamping plates are fixedly arranged at the ends of the displacement rods, and the oblique clamping plates are staggered, and rubber sheets are also fixedly arranged on the outer walls of the oblique clamping plates.

3. A sanitary pipe welding device according to claim 1, characterized in that: The positioning mechanism includes a limit frame fixedly arranged on the upper surface of the bottom plate, a moving block movably arranged in the limit frame, rollers equidistantly distributed are fixedly arranged on the upper and lower surfaces of the moving block, and the rollers are located in the limit frame, a vertical rod is also fixedly arranged on the upper surface of the moving block, and a blocking piece is fixedly arranged on the top of the vertical rod, a lifting plate is sleeved on the outer side of the vertical rod, a grip rod is fixedly arranged on the upper surface of the lifting plate, and a conical block is fixedly arranged on the lower surface of the lifting plate, a first spring is also sleeved on the outer side of the vertical rod, one end of the first spring is connected to the upper surface of the moving block, and the other end of the first spring is connected to the lower surface of the lifting plate.

4. A sanitary pipe welding device according to claim 1, characterized in that: The limiting mechanism includes a fixing frame which is equidistantly distributed in a ring shape on the outer wall of the vertical tube, a telescopic rod is movably provided on the outer wall of the fixing frame, and the telescopic rod passes through the vertical tube, a clip is fixedly provided on one end of the telescopic rod, and the clip is located in the vertical tube, the cross-section of the clip is V-shaped, a baffle is fixedly provided on the other end of the telescopic rod, and a second spring is sleeved on the outer side of the telescopic rod, one end of the second spring is connected to the baffle, and the other end of the second spring is connected to the outer wall of the fixing frame, a moving opening is also opened on the outer wall of the vertical tube, and the clip is located in the moving opening, a supporting assembly is also provided above the vertical tube, which is used to apply a downward supporting force to the pipe fitting to be welded in the vertical tube when the mounting plate moves downward, and a fixing assembly is also provided on the outer side of the slider, which is used to fix the slider in the moving opening.

5. A sanitary pipe welding device according to claim 4, characterized in that: The supporting assembly includes a vertical cylinder fixedly arranged on the upper surface of the slider, and a lifting rod is movably arranged in the vertical cylinder, a supporting plate is fixedly arranged on the top of the lifting rod, and a rubber pad is fixedly arranged on the lower surface of the supporting plate, a third spring is fixedly connected to the bottom end of the lifting rod, and the end of the third spring is connected to the bottom inner wall of the vertical cylinder, a blocking rod is fixedly connected to the outer wall of the lifting rod, a limiting opening is opened on the outer side of the vertical cylinder, and the blocking rod is located in the limiting opening.

6. A sanitary pipe welding device according to claim 5, characterized in that: The fixing assembly includes a fixing frame fixedly arranged on the outer wall of the slider, the outer wall of the fixing frame is provided with a threaded hole, and a screw is threadedly connected in the threaded hole, an adjusting wheel is fixedly arranged at one end of the screw, and a pressure plate is fixedly arranged at the other end of the screw, and the pressure plate is located in the fixing frame.

7. A sanitary pipe welding device according to claim 6, characterized in that: The upper surface of the bottom plate is also provided with card slots which are distributed at equal distances, and card pieces are carded in the card slots.

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