Auxiliary support for hot melt welding of PE pipe
By using an adjustable auxiliary support for hot-melt welding of PE pipes, and employing a limiting plate and rubber balls for multi-point positioning, the problem of the clamp being unable to stably position PE pipes with large dimensional variations was solved, thus achieving welding stability and precision and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIUQUAN DAYU HYDROPOWER PROJECT CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-07-28
AI Technical Summary
In the existing hot-melt welding process of PE pipes, the clamp cannot stably position the PE pipe with large dimensional changes, resulting in welding offset and dimensional errors.
An adjustable PE pipe hot-melt welding auxiliary support is adopted. The limit plate and guide rod are slidably connected, and rubber balls are used for multi-point positioning. The synchronous clamping of multiple rubber balls is achieved through the adjustment mechanism and self-locking motor, which increases the friction to stabilize the positioning.
It achieves stable positioning of PE pipes of different sizes, improves the stability and accuracy of welding, reduces labor costs, and improves construction efficiency.
Smart Images

Figure CN224561923U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PE pipe hot melt welding, and in particular to auxiliary supports for PE pipe hot melt welding. Background Technology
[0002] Welding auxiliary supports are devices used to assist in the hot-melt welding process of PE pipes. During the hot-melt welding of PE pipes, the pipes need to be heated to a molten state and joined under pressure. Therefore, a stable and reliable support device is needed to ensure the smooth progress of the welding process. It can not only provide stable and reliable support and ensure welding quality, but also improve construction efficiency and reduce labor costs.
[0003] In existing technologies, the stability of clamping the workpiece is crucial during the hot-melt welding of PE pipes of different sizes. This is typically achieved by adjusting the position of an arc-shaped clamp to accommodate different PE pipe sizes. While this method provides relatively stable positioning for workpieces with a small difference in arc size from the clamp, it becomes unstable when dealing with PE pipes with significantly varying arc sizes. When the arc size of the PE pipe differs greatly from the arc size of the clamp, the contact area between them decreases significantly. This is because the arc design of the clamp is fixed, while the size of the PE pipe is variable. When their arcs do not match, the clamp can only contact a portion of the PE pipe's surface, failing to achieve a complete fit. This reduced contact area directly leads to a decrease in friction between the clamp and the PE pipe. Consequently, there is insufficient resistance to position the PE pipe during butt welding, causing it to shift and resulting in welding misalignment and dimensional errors. Therefore, an improved auxiliary support for hot-melt welding of PE pipes is needed to address these issues. Utility Model Content
[0004] To overcome the problem that a single clamp cannot stably position PE pipes with large dimensional variations.
[0005] The technical solution of this utility model is as follows: a PE pipe hot melt welding auxiliary support, including a base plate, a first support frame and an adjustment mechanism. The adjustment mechanism is provided inside the base plate, and the first support frame is provided on the top of the adjustment mechanism. A limiting plate is fixedly connected inside the first support frame. A slider is slidably connected inside the limiting plate. A guide rod is fixedly connected inside the slider. The guide rod is slidably connected inside the limiting plate. A rubber ball for clamping the PE pipe is fixedly connected to the inner side of the guide rod.
[0006] Preferably, the limiting plate has a matching groove at the corresponding position of the slider, and the slider slides inside the matching groove.
[0007] Preferably, the adjustment mechanism includes a fixing lug through which a bolt can pass, the fixing lug being fixedly connected to the front and back of the base plate, a scale being fixedly connected to the front of the base plate, a drive motor being fixedly connected to the left side of the base plate, a one-way threaded rod being fixedly connected to the output end of the drive motor, the one-way threaded rod being rotatably connected to the inside of the base plate, a sliding seat being threadedly connected to the outside of the one-way threaded rod, the sliding seat being slidably connected to the inside of the base plate, a mounting plate being fixedly connected to the top of the sliding seat, a first support frame being fixedly connected to the top of the mounting plate, and a pointer being fixedly connected to the top of the sliding seat.
[0008] Preferably, the base plate has a guide groove at the corresponding position of the sliding seat, and the sliding seat slides inside the guide groove.
[0009] Preferably, a second support frame is fixedly connected to the top of the mounting plate, a motor frame is fixedly connected inside the second support frame, a self-locking motor is fixedly connected inside the motor frame, a first gear is fixedly connected to the output end of the self-locking motor, a second gear is meshed with the outside of the first gear, a guide plate is fixedly connected inside the second gear, the guide plate is rotatably connected inside the second support frame, a connecting rod is movably connected inside the guide plate, and the connecting rod is fixedly connected to the outside of the slider.
[0010] Preferably, the second support frame has a limiting groove at the corresponding position of the guide plate, and the first support frame is rotatably connected inside the limiting groove.
[0011] Preferably, the guide plate has a guide groove at the corresponding position of the connecting rod, and the connecting rod is movably connected inside the guide groove.
[0012] The beneficial effects of this utility model are as follows: the position of the rubber ball can be flexibly adjusted by sliding the slider, and can be adjusted quickly and flexibly according to the size of the PE pipe. Therefore, it can be applied to PE pipes of different sizes and with large size fluctuations. By having multiple rubber balls contact the PE pipe, the contact friction can be effectively increased, thereby stably positioning the PE pipe and ensuring the stability of PE pipe welding. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0014] Figure 2 This is a schematic cross-sectional view of the limiting disc structure of this utility model;
[0015] Figure 3 This is a schematic diagram of the second support frame structure of this utility model;
[0016] Figure 4 This is a schematic diagram of the adjustment mechanism of this utility model;
[0017] Figure 5 This is a partial structural diagram of the adjustment mechanism of this utility model.
[0018] Explanation of reference numerals in the attached drawings: 1. Base plate; 21. First support frame; 22. Limiting plate; 23. Slider; 24. Guide rod; 25. Rubber ball; 26. Second support frame; 27. Motor frame; 28. Self-locking motor; 29. First gear; 210. Second gear; 211. Guide plate; 212. Connecting rod; 31. Fixing lug; 32. Scale; 33. Drive motor; 34. One-way threaded rod; 35. Sliding seat; 36. Mounting plate; 37. Pointer. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] Please see Figures 1-5This utility model provides an embodiment of an auxiliary support for hot-melt welding of PE pipes, including a base plate 1, a first support frame 21, and an adjustment mechanism. The adjustment mechanism is located inside the base plate 1, and the first support frame 21 is located on top of the adjustment mechanism. A limiting plate 22 is fixedly connected inside the first support frame 21, and a slider 23 is slidably connected inside the limiting plate 22. A guide rod 24 is fixedly connected inside the slider 23 and slidably connected inside the limiting plate 22. Rubber balls 25 for clamping the PE pipe are fixedly connected to the inner side of the guide rod 24, allowing the PE pipe to pass through the rubber balls 25. The guide rod is driven by the slider 23. 24. The guide rod 24 drives the rubber ball 25 to contact the PE pipe. Several rubber balls 25 simultaneously contact the PE pipe, positioning it. Rubber balls 25 in two positions work together to position the PE pipe symmetrically. Then, an adjusting mechanism moves the positioned PE pipe for welding. The limiting plate 22 has a matching groove at the corresponding position of the slider 23, and the slider 23 slides within the groove. The groove positions and guides the slider 23, ensuring linear sliding and preventing launch deviation and jamming. A second support frame 2 is fixedly connected to the top of the mounting plate 36. 6. A motor frame 27 is fixedly connected inside the second support frame 26. A self-locking motor 28 is fixedly connected inside the motor frame 27. A first gear 29 is fixedly connected to the output end of the self-locking motor 28. A second gear 210 meshes with the outside of the first gear 29. A guide plate 211 is fixedly connected inside the second gear 210. The guide plate 211 is rotatably connected inside the second support frame 26. A connecting rod 212 is movably connected inside the guide plate 211. The connecting rod 212 is fixedly connected to the outside of the slider 23. Driven by the self-locking motor 28, multiple limit plates 22 move synchronously, thereby causing the rubber ball 25 to move synchronously against the PE pipe. The clamping mechanism is achieved by the second support frame 26 having a limiting groove at the corresponding position of the guide plate 211, and the first support frame 21 being rotatably connected inside the limiting groove. The limiting groove ensures that the guide plate 211 rotates smoothly, preventing it from tilting and falling off, and stably driving the connecting rod 212 to slide. The guide plate 211 has a guide groove at the corresponding position of the connecting rod 212, and the connecting rod 212 is movably connected inside the guide groove, allowing the guide plate 211 to rotate and drive the connecting rod 212 to slide linearly. Thus, multiple connecting rods 212 can be moved synchronously by rotating one guide plate 211, which is simple, fast, and lower in cost.
[0021] Please see Figure 1 , Figures 4-5In this embodiment, the adjustment mechanism includes a fixing lug 31 through which a bolt can pass. The fixing lug 31 is fixedly connected to the front and back of the base plate 1. A scale 32 is fixedly connected to the front of the base plate 1. A drive motor 33 is fixedly connected to the left side of the base plate 1. A one-way threaded rod 34 is fixedly connected to the output end of the drive motor 33. The one-way threaded rod 34 is rotatably connected to the inside of the base plate 1. A sliding seat 35 is threadedly connected to the outside of the one-way threaded rod 34. The sliding seat 35 is slidably connected to the inside of the base plate 1. A mounting plate 36 is fixedly connected to the top of the sliding seat 35. A support frame 21 is fixedly connected to the top of the mounting plate 36. A pointer 37 is fixedly connected to the top of the sliding seat 35. The pointer moves by rotating the one-way threaded rod 34, making movement and stopping more flexible. The pointer 37 is used in conjunction with the scale 32 for more precise adjustment and less error. The base plate 1 has a guide groove at the corresponding position of the sliding seat 35, and the sliding seat 35 slides inside the guide groove. The guide groove and the one-way threaded rod 34 can make the sliding seat 35 move in a straight line, preventing the sliding seat 35 from rotating and making the movement of the sliding seat 35 smoother and more stable.
[0022] During operation, the PE pipe is sequentially inserted between two rubber balls 25 at different positions. The self-locking motor 28 drives the first gear 29, which in turn drives the second gear 210. The second gear 210 drives the guide disc 211, causing it to rotate. The rotation of the guide disc 211 drives the connecting rod 212 to slide linearly through the guide groove. The connecting rod 212 drives the slider 23, which in turn drives the guide rod 24, which in turn drives the rubber balls 25. This causes multiple rubber balls 25 to simultaneously contact the PE pipe, thereby clamping the PE pipe from two positions. The self-locking motor... The self-locking performance of the rubber ball 25 allows it to continuously clamp the PE pipe. Then, the drive motor 33 drives the one-way threaded rod 34 to rotate. The one-way threaded rod 34 drives the sliding seat 35, which in turn drives the mounting plate 36. The mounting plate 36 drives the second support frame 26 and the first support frame 21, thus moving the clamped PE pipe. When the sliding seat 35 moves, it drives the pointer 37. The pointer 37 can be used in conjunction with the scale 32 to observe the position of the scale 32 and determine the moving distance, thereby moving the PE pipe and coordinating with the welding operation of the PE pipe.
[0023] Through the above steps, the PE pipe is clamped by the flexibly adjustable rubber balls 25. By having multiple rubber balls 25 contact the PE pipe, the contact friction can be effectively increased, thereby stably positioning the PE pipe and solving the problem that a single clamp cannot stably position a PE pipe with large dimensional changes.
Claims
1. A PE pipe hot-melt welding auxiliary support, including a base plate (1), characterized in that: It also includes a first support frame (21) and an adjustment mechanism. The adjustment mechanism is provided inside the base plate (1). The first support frame (21) is provided on the top of the adjustment mechanism. A limiting plate (22) is fixedly connected inside the first support frame (21). A slider (23) is slidably connected inside the limiting plate (22). A guide rod (24) is fixedly connected inside the slider (23). The guide rod (24) is slidably connected inside the limiting plate (22). A rubber ball (25) for clamping PE pipe is fixedly connected to the inner side of the guide rod (24).
2. The auxiliary support for hot-melt welding of PE pipe according to claim 1, characterized in that: The limiting plate (22) has a matching groove at the corresponding position of the slider (23), and the slider (23) slides inside the matching groove.
3. The auxiliary support for hot-melt welding of PE pipes according to claim 1, characterized in that: The adjustment mechanism includes a fixing lug (31) through which a bolt can pass. The fixing lug (31) is fixedly connected to the front and back of the base plate (1). A scale (32) is fixedly connected to the front of the base plate (1). A drive motor (33) is fixedly connected to the left side of the base plate (1). A one-way threaded rod (34) is fixedly connected to the output end of the drive motor (33). The one-way threaded rod (34) is rotatably connected to the inside of the base plate (1). A sliding seat (35) is threadedly connected to the outside of the one-way threaded rod (34). The sliding seat (35) is slidably connected to the inside of the base plate (1). A mounting plate (36) is fixedly connected to the top of the sliding seat (35). A first support frame (21) is fixedly connected to the top of the mounting plate (36). A pointer (37) is fixedly connected to the top of the sliding seat (35).
4. The auxiliary support for hot-melt welding of PE pipe according to claim 3, characterized in that: The base plate (1) has a guide groove at the corresponding position of the sliding seat (35), and the sliding seat (35) slides inside the guide groove.
5. The auxiliary support for hot-melt welding of PE pipe according to claim 3, characterized in that: The top of the mounting plate (36) is fixedly connected to a second support frame (26), the inside of the second support frame (26) is fixedly connected to a motor frame (27), the inside of the motor frame (27) is fixedly connected to a self-locking motor (28), the output end of the self-locking motor (28) is fixedly connected to a first gear (29), the outside of the first gear (29) is meshed with a second gear (210), the inside of the second gear (210) is fixedly connected to a guide plate (211), the guide plate (211) is rotatably connected to the inside of the second support frame (26), the inside of the guide plate (211) is movably connected to a connecting rod (212), and the connecting rod (212) is fixedly connected to the outside of the slider (23).
6. The auxiliary support for hot-melt welding of PE pipe according to claim 5, characterized in that: The second support frame (26) has a limiting groove at the corresponding position of the guide plate (211), and the first support frame (21) is rotatably connected inside the limiting groove.
7. The auxiliary support for hot-melt welding of PE pipe according to claim 5, characterized in that: The guide plate (211) has a guide groove at the corresponding position of the connecting rod (212), and the connecting rod (212) is movably connected inside the guide groove.