Auxiliary device for hot melt butt joint of PE pipe
By designing the support, compression, and flattening components, the problem of traditional PE pipe hot-melt butt welding devices being unable to automatically flatten protrusions has been solved, achieving automatic flattening and improving operational efficiency and aesthetics.
Patent Information
- Application Number
- CN202522098488.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-29
AI Technical Summary
Traditional PE pipe hot-melt butt welding devices have limited functionality and cannot automatically smooth out the protrusions generated after hot-melt welding, requiring manual operation.
An auxiliary device including a support component, a clamping component, and a leveling component was designed. By using the cooperation of rollers and cylinders, the PE pipe can be clamped, rotated, and automatically leveled. The leveling component achieves automatic leveling through the cooperation of a leveling blade and a spring.
It enables automatic smoothing of protrusions after PE pipes are hot-melted and butt-welded, eliminating the need for manual operation and improving the aesthetics and efficiency of the process.
Smart Images

Figure CN224675580U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of auxiliary technology for PE pipe butt welding, specifically an auxiliary device for hot-melt butt welding of PE pipes. Background Technology
[0002] PE pipes are plastic pipes made primarily of polyethylene. They are characterized by corrosion resistance, good flexibility, and long service life, and are widely used in water supply and drainage, gas transmission, and other fields. PE pipes are often connected using hot-melt butt welding technology. This involves heating the pipe ends to a molten state, applying pressure to fuse the two ends, and then cooling to form a high-strength sealing joint. This technology is suitable for large-diameter PE pipes, offering advantages such as high connection strength and no risk of leakage. However, in practical applications, to ensure the quality of the hot-melt connection, auxiliary devices are needed to secure the PE pipes before the butt welding operation.
[0003] However, traditional auxiliary devices for hot-melt butt welding of PE pipes can only clamp the PE pipe and control its movement to complete the butt welding operation. After the butt welding and cooling, the protrusions caused by the hot fusion at the joint of the PE pipe still need to be manually smoothed. This makes the auxiliary device functionally limited and unable to smooth out the protrusions caused by the hot fusion, which is not conducive to practical applications.
[0004] Therefore, those skilled in the art provide an auxiliary device for hot-melt butt welding of PE pipes to solve the problems mentioned in the background art. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides an auxiliary device for hot-melt butt welding of PE pipes, which solves the problem mentioned in the background that the auxiliary devices in the existing technologies have limited functions, and after the butt welding and cooling, the protrusions caused by hot melting at the joint of the PE pipes still need to be manually smoothed, and the auxiliary device cannot smooth out the protrusions caused by hot melting.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: an auxiliary device for hot-melt butt welding of PE pipes, comprising a base, a fixed seat fixedly connected to one end of the top of the base, a movable seat slidably connected to the end of the top of the base away from the fixed seat, a support component provided on the top of both the fixed seat and the movable seat, a first U-shaped plate fixedly connected to one side of both the fixed seat and the movable seat, a pressing component provided on the top of both the first U-shaped plates, and a second U-shaped plate fixedly connected to the outer side of the base and between the fixed seat and the movable seat, a flattening component provided on the top of the second U-shaped plate; The supporting component includes a first roller that is rotatably arranged, and the pressing component includes a second roller that is rotatably arranged. The outer surfaces of both the first roller and the second roller are frosted.
[0007] The above technical solution uses the supporting and clamping components to clamp and fix the PE pipe. At the same time, the first and second rollers ensure that the PE pipe can still rotate after being clamped and fixed. This, combined with the flattening component, allows for the rapid flattening of any protrusions after the PE pipe has been heat-fused, ensuring the aesthetics of the joint and eliminating the need for manual operation, which is beneficial for practical applications.
[0008] Preferably, the supporting assembly further includes a second slide groove, a first Y-shaped plate, a second cylinder, a connecting rod, and a motor. The second slide groove is formed on the top of the fixed seat and the movable seat. The first Y-shaped plate slides inside the second slide groove. The second cylinder is fixedly installed on both sides of the fixed seat and the movable seat. The piston rods of the second cylinders extend into the interior of the second slide groove and are fixedly connected to the first Y-shaped plate. The first rollers are rotatably connected to both ends of the top of the first Y-shaped plate. The connecting rod is fixedly connected between the two corresponding first rollers. The motor is fixedly installed on one side of the top of the first Y-shaped plate. The output shaft of the motor is fixedly connected to one of the first rollers.
[0009] Through the above technical solution, the operation of the second cylinder can drive the first Y-shaped plate to move inside the second slide groove, thereby adjusting the distance between the two first Y-shaped plates, enabling the equipment to handle PE pipes of different diameters. Simultaneously, the operation of the motor can drive one of the first rollers to rotate, which, through the action of the connecting rod, drives the corresponding first roller to rotate together. Since the two motors drive in the same direction, all the first rollers can rotate in one direction, thus better driving the clamped and fixed PE pipe to rotate in one direction, facilitating its use with the leveling component.
[0010] Preferably, the clamping assembly further includes a third cylinder, a clamping seat, a third slide groove, a second Y-shaped plate, and a fourth cylinder. The third cylinder is fixedly installed on the top of the first U-shaped plate, the clamping seat is fixedly installed on the piston rod of the third cylinder, the third slide groove is opened at the bottom of the clamping seat, the second Y-shaped plate is slidably connected inside the third slide groove, the fourth cylinder is fixedly connected to both sides of the clamping seat, the piston rods of the fourth cylinders extend into the interior of the third slide groove and are fixedly connected to the second Y-shaped plate, and the second rollers are rotatably connected to both ends of the second Y-shaped plate.
[0011] Through the above technical solution, the operation of the third cylinder can drive the clamping seat to move downward. At the same time, the operation of the fourth cylinder can drive the second Y-shaped plate to move inside the third sliding groove, thereby adjusting the distance between the two second Y-shaped plates. Then, by using the second roller in conjunction with the first roller, the PE pipe can be better clamped and fixed.
[0012] Preferably, the leveling assembly includes a fifth cylinder, a horizontal plate, a T-shaped rod, a leveling cutter, and a spring. The fifth cylinder is fixedly installed on the top of the second U-shaped plate. The horizontal plate is fixedly connected to the piston rod of the fifth cylinder. The T-shaped rod is slidably connected to both ends of the horizontal plate. The leveling cutter is fixed between the bottoms of the two T-shaped rods. The spring is sleeved on the outside of the T-shaped rod and located between the leveling cutter and the horizontal plate.
[0013] The above technical solution utilizes a flattening blade to flatten the protrusions generated at the joint of PE pipes after hot-melt welding. At the same time, the spring force ensures that the flattening blade remains pressed against and in contact with the surface of the PE pipe, thereby further guaranteeing the flattening effect.
[0014] Preferably, the top of the base is provided with a first sliding groove, the bottom of the movable seat is fixedly connected with a slider, the slider is slidably connected with the first sliding groove, and a first cylinder is fixedly installed on one side of the base, the piston rod of the first cylinder extends into the interior of the first sliding groove and is fixedly connected with the slider.
[0015] Through the above technical solution, the operation of the first cylinder can drive the slider to move laterally inside the first slide groove, thereby driving the moving seat to move laterally, and thus adjusting the distance between the moving seat and the fixed seat, which facilitates the docking operation of two PE pipes.
[0016] Preferably, both ends of the bottom of the base are fixedly connected to a fixing plate, and each fixing plate has two fixing holes on its top.
[0017] The above technical solution allows for easy fixing of the equipment using a fixing plate and fixing holes, thus preventing the equipment from tipping over when the PE pipes are clamped together.
[0018] Preferably, a control panel is fixedly installed on one side of the base, and the first cylinder, the second cylinder, the motor, the third cylinder, the fourth cylinder, and the fifth cylinder are all electrically connected to the control panel.
[0019] The above technical solution allows for convenient control of the overall operation of the equipment using a control panel.
[0020] This utility model provides an auxiliary device for hot-melt butt welding of PE pipes, which has the following beneficial effects: This auxiliary device for hot-melt butt welding of PE pipes clamps and fixes the PE pipes by setting up a support component and a clamping component. At the same time, the first and second rollers ensure that the PE pipes can still rotate after being clamped and fixed. In conjunction with the flattening component, it can quickly flatten the protrusions generated after the PE pipes are hot-melt butt welded, thus ensuring the aesthetics of the butt weld. Moreover, it does not require manual operation, which is beneficial to practical applications. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0022] Figure 2 This is a schematic diagram of the support component structure of this utility model.
[0023] Figure 3 This is a schematic diagram of the clamping component structure of this utility model.
[0024] Figure 4 This is a schematic diagram of the flattening component structure of this utility model.
[0025] In the diagram: 1. Base; 2. Fixed seat; 3. Movable seat; 4. First U-shaped plate; 5. Second U-shaped plate; 6. First slide groove; 7. Slider; 8. First cylinder; 9. Second slide groove; 10. First Y-shaped plate; 11. Second cylinder; 12. First roller; 13. Connecting rod; 14. Motor; 15. Third cylinder; 16. Pressing seat; 17. Third slide groove; 18. Second Y-shaped plate; 19. Fourth cylinder; 20. Second roller; 21. Fifth cylinder; 22. Horizontal plate; 23. T-shaped rod; 24. Flattening blade; 25. Spring; 26. Fixed plate; 27. Fixed hole; 28. Control panel. Detailed Implementation
[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0027] Reference Figures 1-4This utility model provides an auxiliary device for hot-melt butt welding of PE pipes, including a base 1. Both ends of the bottom of the base 1 are fixedly connected to fixing plates 26. Each fixing plate 26 has two fixing holes 27 on its top. The fixing plates 26 and fixing holes 27 facilitate the fixing of the device, preventing it from tipping over when the PE pipes are clamped. A fixing seat 2 is fixedly connected to one end of the top of the base 1. A movable seat 3 is slidably connected to the end of the top of the base 1 away from the fixing seat 2. A first sliding groove 6 is provided on the top of the base 1. A slider 7 is fixedly connected to the bottom of the movable seat 3, and the slider 7 is slidably connected to the first sliding groove 6. A first cylinder 8 is fixedly installed on one side of the base 1. The piston rod of the first cylinder 8 extends into the first sliding groove 6 and is fixedly connected to the slider 7. The operation of the first cylinder 8 drives the slider 7 to move laterally inside the first sliding groove 6, thereby driving the movable seat 3 to move laterally, adjusting the distance between the movable seat 3 and the fixing seat 2, facilitating the butt welding operation of two PE pipes.
[0028] In one aspect of this embodiment, a support assembly is provided on the top of both the fixed base 2 and the movable base 3. The support assembly includes a second slide groove 9, a first Y-shaped plate 10, a second cylinder 11, a first roller 12, a connecting rod 13, and a motor 14. The second slide groove 9 is formed on the top of both the fixed base 2 and the movable base 3, and the first Y-shaped plate 10 slides inside the second slide groove 9. The second cylinder 11 is fixedly installed on both sides of the fixed base 2 and the movable base 3. The piston rod of the second cylinder 11 extends into the interior of the second slide groove 9 and is fixedly connected to the first Y-shaped plate 10. By operating the second cylinder 11, the first Y-shaped plate 10 can be moved within the second slide groove 9, thereby adjusting the distance between the two first Y-shaped plates 10, enabling the equipment to use PE pipes of different diameters. The first roller 12 is rotatably connected to both ends of the top of the first Y-shaped plate 10, and the connecting rod 13 is fixedly connected between the corresponding two first rollers 12. By using the connecting rod 13, the corresponding two first rollers 12 can rotate simultaneously. The motor 14 is fixedly installed on one side of the top of the first Y-shaped plate 10. The output shaft of the motor 14 is fixedly connected to one of the first rollers 12. The operation of the motor 14 can drive one of the first rollers 12 to rotate. Then, through the action of the connecting rod 13, the corresponding first roller 12 is driven to rotate together. At the same time, the driving directions of the two motors 14 are the same, so that all the first rollers 12 can rotate in one direction. This can better drive the clamped and fixed PE pipe to rotate in one direction, which is convenient for use with the flattening component.
[0029] In one aspect of this embodiment, a first U-shaped plate 4 is fixedly connected to one side of both the fixed base 2 and the movable base 3. A pressing assembly is provided on the top of each of the first U-shaped plates 4. The pressing assembly includes a third cylinder 15, a pressing seat 16, a third slide groove 17, a second Y-shaped plate 18, a fourth cylinder 19, and a second roller 20. The third cylinder 15 is fixedly installed on the top of the first U-shaped plate 4, and the pressing seat 16 is fixedly installed on the piston rod of the third cylinder 15. The operation of the third cylinder 15 drives the pressing seat 16 to move downwards. The third slide groove 17 is formed at the bottom of the pressing seat 16. The second Y-shaped plate 18 is slidably connected inside the third slide groove 17. The fourth cylinder 19 is fixedly connected to both sides of the pressing seat 16. The piston rods of the fourth cylinder 19 extend into the third slide groove 17 and are fixedly connected to the second Y-shaped plate 18. The operation of the fourth cylinder 19 drives the second Y-shaped plate 18 to move inside the third slide groove 17, thereby adjusting the distance between the two second Y-shaped plates 18. The second roller 20 is rotatably connected to both ends of the second Y-shaped plate 18. By using the second roller 20 in conjunction with the first roller 12, the PE pipe can be better clamped and fixed. The outer surfaces of both the first roller 12 and the second roller 20 are made of frosted surface, which can increase the friction on the PE pipe.
[0030] In one aspect of this embodiment, a second U-shaped plate 5 is fixedly connected to the outer side of the base 1 and located between the fixed seat 2 and the movable seat 3. A flattening assembly is provided on the top of the second U-shaped plate 5. The flattening assembly includes a fifth cylinder 21, a horizontal plate 22, a T-shaped rod 23, a flattening cutter 24, and a spring 25. The fifth cylinder 21 is fixedly installed on the top of the second U-shaped plate 5, and the horizontal plate 22 is fixedly connected to the piston rod of the fifth cylinder 21. By operating the fifth cylinder 21, the horizontal plate 22 can be moved up and down. The T-shaped rod 23 is slidably connected to both ends of the horizontal plate 22, the flattening cutter 24 is fixed between the bottoms of the two T-shaped rods 23, and the spring 25 is sleeved on the outer side of the T-shaped rod 23 and located between the flattening cutter 24 and the horizontal plate 22. The flattening blade 24 can be used to flatten the protrusions generated at the joint position of the PE pipe after hot fusion. At the same time, the elastic force of the spring 25 ensures that the flattening blade 24 can always press against and contact the surface of the PE pipe, thereby further ensuring the flattening effect.
[0031] In one aspect of this embodiment, a control panel 28 is fixedly mounted on one side of the base 1. The first cylinder 8, the second cylinder 11, the motor 14, the third cylinder 15, the fourth cylinder 19, and the fifth cylinder 21 are all electrically connected to the control panel 28. The control panel 28 allows for convenient control of the overall operation of the equipment. Furthermore, the circuit connections and control logic between the components are well-known to those skilled in the art and require no further explanation.
[0032] Working principle: When in use, the equipment is first fixed in place by fixing plate 26 and fixing hole 27 to prevent the equipment from tipping over when the PE pipes are clamped.
[0033] Then, the control panel 28 controls all the second cylinders 11 and the fourth cylinder 19 to work synchronously, thereby driving the first Y-shaped plate 10 and the second Y-shaped plate 18 to move synchronously. Then, according to the diameter of the PE pipe to be clamped, the distance between the two first Y-shaped plates 10 and the distance between the two second Y-shaped plates 18 are adjusted so that the PE pipe can be better placed between the first rollers 12 for support.
[0034] After adjustment, place one of the PE pipes between the tops of the first rollers 12 on the top of the fixed seat 2, and then control the corresponding third cylinder 15 through the control panel 28 to drive the corresponding clamping seat 16 to move downward, thereby driving the corresponding second roller 20 to move downward. By using the cooperation between the second roller 20 and the first roller 12, the PE pipe located on the top of the fixed seat 2 is clamped and fixed. Then repeat the above operation to clamp and fix the other PE pipe on the top of the movable seat 3.
[0035] Next, the PE pipes are heat-fused using a heat fusion device. After the heat fusion is completed, the first cylinder 8 is controlled by the control panel 28 to move the slider 7 and the moving seat 3, thereby moving the corresponding PE pipes and heat-fusion connecting the two PE pipes.
[0036] After the heat fusion process cools down, the fifth cylinder 21 is controlled by the control panel 28 to move the horizontal plate 22 and the flattening blade 24 downwards. This allows the flattening blade 24 to contact the protrusions created after the heat fusion. Simultaneously, the spring force of the spring 25 ensures that the flattening blade 24 remains pressed against and in contact with the surface of the PE pipe. Next, the motor 14 is controlled by the control panel 28 to rotate the corresponding first roller 12. The connecting rod 13 then rotates the corresponding first roller 12 together with it. Since the two motors 14 drive in the same direction, all the first rollers 12 rotate in one direction, causing the clamped and fixed PE pipe to rotate in one direction. While the PE pipe rotates, the flattening blade 24 flattens the protruding parts, ensuring the aesthetics of the equipment and eliminating the need for manual operation, which is beneficial for practical applications.
[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An auxiliary device for hot-melt butt welding of PE pipes, comprising a base (1), characterized in that, A fixed seat (2) is fixedly connected to one end of the top of the base (1), and a movable seat (3) is slidably connected to the end of the top of the base (1) away from the fixed seat (2). A support component is provided on the top of both the fixed seat (2) and the movable seat (3). A first U-shaped plate (4) is fixedly connected to one side of both the fixed seat (2) and the movable seat (3). A pressing component is provided on the top of both the first U-shaped plate (4). A second U-shaped plate (5) is fixedly connected to the outside of the base (1) and between the fixed seat (2) and the movable seat (3). A flattening component is provided on the top of the second U-shaped plate (5). The supporting component includes a first roller (12) that is rotatably arranged, and the pressing component includes a second roller (20) that is rotatably arranged. The outer surfaces of the first roller (12) and the second roller (20) are both frosted.
2. The auxiliary device for hot-melt butt welding of PE pipes according to claim 1, characterized in that: The supporting assembly also includes a second slide groove (9), a first Y-shaped plate (10), a second cylinder (11), a connecting rod (13), and a motor (14). The second slide groove (9) is opened on the top of the fixed seat (2) and the movable seat (3). The first Y-shaped plate (10) slides inside the second slide groove (9). The second cylinder (11) is fixedly installed on both sides of the fixed seat (2) and the movable seat (3). The piston rods of the second cylinder (11) extend into the interior of the second slide groove (9) and are fixedly connected to the first Y-shaped plate (10). The first roller (12) is rotatably connected to both ends of the top of the first Y-shaped plate (10). The connecting rod (13) is fixedly connected between the two corresponding first rollers (12). The motor (14) is fixedly installed on one side of the top of the first Y-shaped plate (10). The output shaft of the motor (14) is fixedly connected to one of the first rollers (12).
3. The auxiliary device for hot-melt butt welding of PE pipes according to claim 2, characterized in that: The clamping assembly further includes a third cylinder (15), a clamping seat (16), a third slide groove (17), a second Y-shaped plate (18), and a fourth cylinder (19). The third cylinder (15) is fixedly installed on the top of the first U-shaped plate (4). The clamping seat (16) is fixedly installed on the piston rod of the third cylinder (15). The third slide groove (17) is opened at the bottom of the clamping seat (16). The second Y-shaped plate (18) is slidably connected inside the third slide groove (17). The fourth cylinder (19) is fixedly connected to both sides of the clamping seat (16). The piston rods of the fourth cylinder (19) extend into the interior of the third slide groove (17) and are fixedly connected to the second Y-shaped plate (18). The second roller (20) is rotatably connected to both ends of the second Y-shaped plate (18).
4. The auxiliary device for hot-melt butt welding of PE pipes according to claim 3, characterized in that: The flattening assembly includes a fifth cylinder (21), a horizontal plate (22), a T-shaped rod (23), a flattening cutter (24), and a spring (25). The fifth cylinder (21) is fixedly installed on the top of the second U-shaped plate (5). The horizontal plate (22) is fixedly connected to the piston rod of the fifth cylinder (21). The T-shaped rod (23) is slidably connected to both ends of the horizontal plate (22). The flattening cutter (24) is fixed between the bottoms of the two T-shaped rods (23). The spring (25) is sleeved on the outside of the T-shaped rod (23) and located between the flattening cutter (24) and the horizontal plate (22).
5. The auxiliary device for hot-melt butt welding of PE pipes according to claim 4, characterized in that: The base (1) has a first groove (6) on its top. The bottom of the movable seat (3) is fixedly connected to a slider (7). The slider (7) is slidably connected to the first groove (6). A first cylinder (8) is fixedly installed on one side of the base (1). The piston rod of the first cylinder (8) extends into the interior of the first groove (6) and is fixedly connected to the slider (7).
6. The auxiliary device for hot-melt butt welding of PE pipes according to claim 1, characterized in that: The base (1) has two fixed plates (26) fixedly connected to both ends of its bottom, and the top of each fixed plate (26) has two fixing holes (27).
7. The auxiliary device for hot-melt butt welding of PE pipes according to claim 5, characterized in that: A control panel (28) is fixedly installed on one side of the base (1). The first cylinder (8), the second cylinder (11), the motor (14), the third cylinder (15), the fourth cylinder (19) and the fifth cylinder (21) are all electrically connected to the control panel (28).