Stainless steel liner repair automatic welding apparatus
By using an automated welding equipment for stainless steel lining repair, and by incorporating components such as positioning tracks and infrared guides, the problem of harsh welding environments inside pipelines has been solved, achieving stable and efficient welding results inside pipelines.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN SHUNDE DISTRICT WATER IND HOLDINGS CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-29
AI Technical Summary
Welding inside pipelines presents challenges such as welding deviations, significant smoke and noise pollution, high heat generation, and confined spaces, resulting in a harsh welding environment that necessitates automated equipment for stable and efficient welding.
An automatic welding device for repairing stainless steel linings was designed. It adopts a combination of positioning rail, electromagnet positioning block, welding generator, drive wheel, telescopic rod, welding head and infrared guide to realize automatic positioning and welding of the inside of the pipe. The welding trajectory is accurately tracked through electromagnetic positioning, telescopic adjustment and infrared guidance.
Stable welding of the inside of the pipe is achieved, with strong adaptability to the welding range. The welding head is parallel to the pipe, and the welding trajectory coincides with the required part, which improves the stability and efficiency of welding.
Smart Images

Figure CN224295046U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel welding technology. Specifically, it relates to an automatic welding device for repairing stainless steel linings. Background Technology
[0002] Because the welding area inside the pipe is located inside the pipe, the welding area is curved during manual welding, which can easily lead to deviations in the welding area. The smoke and noise generated during welding can also affect the welding process. At the same time, welding generates a lot of heat, and the small space inside the pipe makes the welding environment even more harsh. Therefore, there is a need for a pipe internal welding equipment that can automate welding to achieve stable and efficient welding inside the pipe. Utility Model Content
[0003] Therefore, the technical problem to be solved by this utility model is to provide an automatic welding device for repairing stainless steel linings that automatically positions and welds inside pipes.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0005] An automatic welding device for repairing stainless steel linings includes a positioning track with a guide groove. Multiple electromagnet positioning blocks are fixedly connected to the lower end of the positioning track. A welding generator is slidably connected to the positioning track. A drive wheel that mates with the guide groove is rotatably connected inside the welding generator. A telescopic rod is slidably connected to the welding generator. The extended end of the telescopic rod is connected to a welding head via a welding adjustment plate. An infrared guide for guiding the welding area is fixedly connected at the position corresponding to the extended end of the telescopic rod and the welding head. A wire feeder for supplying welding wire is connected to the upper end of the welding head.
[0006] Preferably, the positioning track has an arc-shaped structure, and there are two guide grooves on the positioning track, which are located at both ends of the positioning track respectively.
[0007] Preferably, the guide grooves are arranged in parallel and pass through the positioning track.
[0008] Preferably, there are multiple electromagnetic positioning blocks, each fixedly connected to the lower end of the positioning track, and the electromagnetic positioning blocks are evenly spaced apart.
[0009] Preferably, the welding part of the welding head faces the side of the positioning track with the electromagnet positioning block.
[0010] Preferably, the extension end of the telescopic rod is rotatably connected to a welding adjustment plate, and the pivot between the welding adjustment plate and the end of the telescopic rod is arranged vertically.
[0011] Preferably, the welding head is fixedly connected to the welding part adjustment plate, and the welding part is adjusted by the welding part adjustment plate.
[0012] Preferably, the welding part adjustment plate has an arc-shaped adjustment groove, the center of which corresponds to the rotation center of the welding part adjustment plate, and the extension end of the telescopic rod is fixedly connected to a locking block that cooperates with the adjustment groove.
[0013] Preferably, the welding part adjustment plate is rotatably connected to a positioning knob for positioning the welding part adjustment plate.
[0014] Preferably, the positioning track is supported by a deformable material.
[0015] The technical solution of this utility model has achieved the following beneficial technical effects:
[0016] 1. It can electromagnetically position the track when welding the inside of the pipe, thereby allowing for adaptive adjustment of the welding range;
[0017] 2. During the welding process, the weld joint is always kept parallel to the pipe being welded, thereby obtaining better welding performance;
[0018] 3. During welding, the welding position is adjusted by adjusting the welding position plate, and the welding range is adaptively adjusted by adjusting the extension position of the welding head. The welding trajectory is detected and guided by the infrared guide, so that the welding trajectory always coincides with the part to be welded. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a second-view schematic diagram of the overall structure of this utility model;
[0021] Figure 3 This is the front view of the present utility model;
[0022] Figure 4 This is a cross-sectional view of the overall structure of this utility model;
[0023] Figure 5 The enlarged view shows the adjustment of the welding part of this utility model.
[0024] The reference numerals in the figure are as follows: 1. Positioning track; 2. Guide groove; 3. Electromagnetic positioning block; 4. Welding generator; 5. Drive wheel; 6. Telescopic rod; 7. Welding head; 8. Infrared guide; 9. Wire feeder; 10. Adjustment groove; 11. Locking block; 12. Positioning knob. Detailed Implementation
[0025] This embodiment will be described in detail with reference to the accompanying drawings when in use.
[0026] In use, the positioning track 1 is arc-shaped and made of steel. The arc of the positioning track 1 corresponds to the arc of the pipe to be welded. Multiple electromagnet positioning blocks 3 are fixedly connected to the outer end of the positioning track 1 facing the inner side of the pipe. The electromagnet positioning blocks 3 are evenly spaced. When each electromagnet positioning block 3 is energized, it generates magnetic attraction and then attracts the electromagnet positioning blocks 3 to the inner side of the pipe. The positioning track 1 is parallel to the weld seam to be welded. The part of the pipe to be welded is the connection between two pipes. The welding trajectory is circular. In use, the positioning track 1 is attracted to the inner side of the pipe before the welding action is performed.
[0027] The positioning track 1 has parallel guide grooves 2 at both ends. The guide grooves 2 consist of multiple evenly spaced and through slots. A welding generator 4 is slidably connected to the positioning track 1. The lower end of the welding generator 4 has a locking interface that engages with the positioning track 1, allowing the welding generator 4 to move along the positioning track 1. A drive wheel 5 that rotatably engages with the guide grooves 2 on the positioning track 1 is rotatably connected inside the welding generator 4. The drive wheel 5 is driven by a drive motor, which drives the welding generator 4 to move smoothly and stably along the positioning track 1.
[0028] The welding generator 4 is equipped with a telescopic rod 6, which extends towards the side of the positioning track 1. The position of the welding part can be adjusted by extending the telescopic rod 6. The extended end of the telescopic rod 6 is rotatably connected to a welding part adjustment plate. The extended end of the welding part adjustment plate is fixedly connected to a welding head 7 and an infrared guide 8. The extended end of the welding head 7 extends towards the side of the positioning track 1 with an electromagnet positioning block 3. A wire feeder 9 is connected to the welding head 7 to continuously supply wire to the welding head 7. An infrared guide 8 is also fixedly connected to the welding part adjustment plate to guide the welding part. The infrared guide 8 detects the part to be welded and then adjusts the welding part by extending the telescopic rod 6. During the welding process, the welding generator 4 slides at a uniform speed through the drive wheel 5, thereby completing a stable welding motion.
[0029] A welding adjustment plate is rotatably connected to the extended end of the telescopic rod 6. The welding adjustment plate and the extended end of the telescopic rod 6 are rotatably connected by a vertically arranged rotating shaft. The welding adjustment plate has an arc-shaped and through adjustment groove 10. The center of the adjustment groove 10 is arranged coaxially with the rotating shaft. A locking block 11 that cooperates with the adjustment groove 10 is fixedly connected to the extended end of the telescopic rod 6, so that the welding adjustment plate can rotate relative to the extended end of the telescopic rod 6.
[0030] A positioning knob 12 is rotatably connected to the welding part adjustment plate for positioning the welding part adjustment plate. The position of the welding part adjustment plate is positioned by rotating the positioning knob 12, so that the welding head 7 is more stable during the welding process.
[0031] The pipe is made of steel during the welding process, which allows it to maintain good stability while undergoing a certain degree of arc deformation. At the same time, the electromagnet positioning blocks 3 are evenly spaced, which allows for multi-point support to stabilize the pipe and thus provide stable support throughout the welding process.
[0032] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this patent application.
Claims
1. An automatic welding device for repairing stainless steel linings, characterized in that, The system includes a positioning track (1), a guide groove (2) on the positioning track (1), multiple electromagnet positioning blocks (3) fixedly connected to the lower end of the positioning track (1), a welding generator (4) slidably connected to the positioning track (1), a drive wheel (5) that cooperates with the guide groove (2) is rotatably connected inside the welding generator (4), a telescopic rod (6) slidably connected to the welding generator (4), a welding head (7) for welding is connected to the extended end of the telescopic rod (6) through the welding part adjustment plate, an infrared guide (8) for guiding the welding part is fixedly connected at the position corresponding to the extended end of the telescopic rod (6) and the welding head (7), and a wire feeder (9) for supplying welding wire is connected to the upper end of the welding head (7).
2. The automatic welding equipment for repairing stainless steel linings according to claim 1, characterized in that, The positioning track (1) has an arc-shaped structure, and there are two guide grooves (2) on the positioning track (1) located at both ends of the positioning track (1).
3. The automatic welding equipment for repairing stainless steel linings according to claim 2, characterized in that, The guide groove (2) is arranged in parallel and passes through the positioning track (1).
4. The automatic welding equipment for repairing stainless steel linings according to claim 1, characterized in that, The electromagnet positioning blocks (3) are multiple and are fixedly connected to the lower end of the positioning track (1), with each electromagnet positioning block (3) evenly spaced apart.
5. The automatic welding equipment for repairing stainless steel linings according to claim 1, characterized in that, The welding head (7) faces the side of the positioning rail (1) with the electromagnet positioning block (3).
6. The automatic welding equipment for repairing stainless steel linings according to claim 1, characterized in that, The extension end of the telescopic rod (6) is rotatably connected to a welding adjustment plate, and the shaft between the welding adjustment plate and the end of the telescopic rod (6) is arranged vertically.
7. The automatic welding equipment for repairing stainless steel linings according to claim 6, characterized in that, The welding head (7) is fixedly connected to the welding part adjustment plate, and the welding part is adjusted by the welding part adjustment plate.
8. The automatic welding equipment for repairing stainless steel linings according to claim 7, characterized in that, The welding part adjustment plate is provided with an arc-shaped adjustment groove (10), the center of the adjustment groove (10) corresponds to the rotation center of the welding part adjustment plate, and the extension end of the telescopic rod (6) is fixedly connected with a locking block (11) that cooperates with the adjustment groove (10).
9. The automatic welding equipment for repairing stainless steel linings according to claim 8, characterized in that, The welding part adjustment plate is rotatably connected to a positioning knob (12) for positioning the welding part adjustment plate.
10. The automatic welding equipment for repairing stainless steel linings according to claim 1, characterized in that, The positioning track (1) is supported by a deformable material.