PE pipe hot melt connecting device
By designing a PE pipe hot-melt connection device with a movable plate and ball bearing structure, the problems of movement difficulty and stability of large-diameter PE pipes during connection are solved, achieving convenient movement and high-quality connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN XINTIANJI PIPE IND TECH CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-24
Smart Images

Figure CN224545353U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline production technology, specifically to a PE pipeline hot-melt connection device. Background Technology
[0002] PE pipes are thermoplastic pipes made of polyethylene resin through extrusion molding. Due to their excellent comprehensive performance, they are gradually replacing traditional metal pipes in water supply, gas, drainage, and industrial fields. In order to extend the service length of PE pipes, multiple pipe sections are often connected together by heat fusion. The core principle of heat fusion connection of PE pipes is to utilize the thermoplasticity of PE material, melt the surface of the pipe by heating, and then apply pressure to fuse them together. After cooling, a seamless, high-strength, and well-sealed integral connection is formed.
[0003] However, when performing heat fusion connections on some large-diameter pipes, as mentioned in the authorized publication number CN216230837U "An Auxiliary Device for Heat Fusion Connection of Large-Diameter Pipes", the heavy pipes are difficult to move easily, making it difficult to connect the two pipe sections and wasting manpower and resources. Moreover, when using the "An Auxiliary Device for Heat Fusion Connection of Large-Diameter Pipes", the large-diameter pipes are in contact with the rollers and wheels during heat fusion connection, making it easy for the pipes to move axially, making it difficult to ensure the stability of the pipes, and thus affecting the connection quality. Utility Model Content
[0004] This invention addresses the challenges of moving large-diameter PE pipes during heat fusion connection and the difficulty in ensuring stability during pipe connection in existing technologies. It provides a heat fusion connection device for PE pipes that allows for convenient pipe movement and maintains stability during the connection process.
[0005] To solve the above problems, the technical solution of this utility model is:
[0006] A PE pipe hot-melt connection device includes a base plate. Supporting components are provided on the left and right sides of the top surface of the base plate. The left-side supporting component includes a vertical plate, a supporting plate, and a movable plate. Vertical plates are fixed to the front and rear ends of the left side of the top surface of the base plate. A supporting plate is connected between the upper ends of the opposing surfaces of the two vertical plates. The supporting plate is a downward-facing arc-shaped plate. Arc-shaped holes are spaced apart from left to right on the supporting plate. A movable plate slides vertically between the two vertical plates on the lower side of the supporting plate. The top surface of the movable plate has an arc-shaped groove corresponding to the bottom surface of the supporting plate. An arc-shaped rod corresponding to each arc-shaped hole is provided on the arc-shaped groove. Ball bearings are spaced apart from front to back on the top surface of each arc-shaped rod.
[0007] The beneficial effects of this utility model through the above technical solution are as follows:
[0008] After the two movable plates move upward to their limit, the pipes that need to be heat-fused are supported by multiple ball bearings on the movable plates, facilitating the movement and docking of the pipes along their axial direction. Moreover, after the two pipes are docked, the ball bearings on the two movable plates release their support, the lower parts of the two pipes contact the anti-slip pads, and the upper parts of the two pipes are limited by corresponding restraint straps. This can prevent axial displacement of the two pipes during heat-fusion, improve stability, and enhance the connection quality. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model;
[0010] Figure 2 This is a sectional front view of the present invention;
[0011] Figure 3 yes Figure 2 Sectional view at point AA;
[0012] Figure 4 This is a schematic diagram of the structure of the movable plate, arc rod and ball connection of this utility model.
[0013] The attached diagram is labeled as follows: 1. Base plate, 2. Vertical plate, 3. Bearing plate, 4. Movable plate, 5. Arc-shaped hole one, 6. Arc-shaped groove, 7. Arc-shaped rod, 8. Ball bearing, 9. Hydraulic cylinder, 10. Anti-slip pad, 11. Sliding hole, 12. Connecting plate, 13. Support plate, 14. Restraint strap, 15. Arc-shaped hole two. Detailed Implementation
[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0015] like Figures 1-4 As shown, a PE pipe hot-melt connection device includes a base plate 1, which is a rectangular plate. Supporting components are provided on the left and right sides of the top surface of the base plate 1. The left-side supporting component includes a vertical plate 2, a supporting plate 3, and a movable plate 4. Vertical plates 2 are fixed to the front and rear ends of the left side of the top surface of the base plate 1. The vertical plates 2 are rectangular plates. A supporting plate 3 is connected between the upper ends of the opposing surfaces of the two vertical plates 2. The supporting plate 3 is an arc-shaped plate with a downward protrusion. The left and right ends of the supporting plate 3 are arc-shaped surfaces. The support plate 3 has arc-shaped holes 5 spaced from left to right. A movable plate 4 is slidably mounted between the two upright plates 2 on the lower side of the support plate 3. The movable plate 4 is a rectangular plate that slides in contact with the two upright plates 2 at its front and rear ends. The top surface of the movable plate 4 is provided with an arc-shaped groove 6 that corresponds to the bottom surface of the support plate 3. The arc-shaped groove 6 is provided with an arc-shaped rod 7 corresponding to each arc-shaped hole 5. The arc-shaped rod 7 is a rectangular rod bent into an arc shape. The top surface of each arc-shaped rod 7 is equipped with ball bearings 8 spaced from front to back.
[0016] An anti-slip pad 10 is bonded to the top surface of the support plate 3. The anti-slip pad 10 is provided with an arc-shaped hole 15 corresponding to the arc-shaped hole 1 5. When the arc-shaped surface of the arc-shaped groove 6 of the movable plate 4 contacts the bottom surface of the upper support plate 3, each arc-shaped rod 7 on the movable plate 4 extends into the corresponding arc-shaped hole 1 5. The top surface of the arc-shaped rod 7 is flush with the top surface of the support plate 3. The upper end of each ball 8 on the arc-shaped rod 7 passes through the corresponding arc-shaped hole 15. The upper end of the ball 8 is higher than the top surface of the anti-slip pad 10.
[0017] The top surface of the base plate 1 is fixed with a hydraulic cylinder 9 corresponding to each movable plate 4, and the piston end of the hydraulic cylinder 9 is connected to the middle of the bottom surface of the corresponding movable plate 4 with its piston facing upward.
[0018] Each of the two upright plates 2 on the support member is provided with a sliding hole 11. Each sliding hole 11 is a rectangular hole opened along the height direction of the upright plate 2. Each sliding hole 11 is provided with a connecting plate 12. The opposite ends of the two connecting plates 12 are respectively connected to the front and rear sides of the movable plate 4. Each of the two upright plates 2 is provided with a support plate 13 on the opposite side. The opposite ends of the two connecting plates 12 are respectively connected to the two support plates 13. The support plates 13 are rectangular plates. The upper ends of the two support plates 13 are higher than the upper ends of the upright plates 2. An elastic binding strap 14 is connected between the upper ends of the two support plates 13. The binding strap 14 is a sheet made of elastic rubber.
[0019] When the arc groove 6 of the movable plate 4 contacts the bottom surface of the bearing plate 3, the piston end of the hydraulic cylinder 9 extends to its limit, and the distance from the binding strap 14 to the anti-slip pad 10 is greater than the diameter of the circle containing the top surface of the anti-slip pad 10; when the piston end of the hydraulic cylinder 9 retracts to its limit, the upper end of the support plate 13 is flush with the upper end of the upright plate 2.
[0020] In use, the piston ends of the two hydraulic cylinders 9 of this utility model extend to their limit simultaneously. At this time, the arc-shaped rods 7 on each bearing member pass through the corresponding arc-shaped holes 5, and the balls 8 on each arc-shaped rod 7 are higher than the top surface of the anti-slip pads 10 on the bearing member. Then, the two pipes that need to be heat-fused are placed on the upper side of the bearing plate 3 of the corresponding bearing member through the lower side of the binding strap 14. The lower part of each pipe contacts the balls 8 on the upper side of the bearing plate 3, pushing the two pipes to move relative to each other, so that the ends of each pipe that need to be connected are located between the two bearing members and in contact. Since each pipe is supported by multiple balls 8, the axial movement of the two pipes can be easily realized, reducing manpower. Moreover, the two bearing members are the same size, which can ensure that the two pipes are at the same height and ensure the docking accuracy. After the two pipes contact each other, the piston ends of the two hydraulic cylinders 9 move downward simultaneously, and the two movable plates 4 drive the connected arc-shaped rods 7 to move downward. Each pipe contacts the anti-slip pad 10 on the corresponding support component under its own weight. During the downward movement of each movable plate 4, the movable plate 4 drives the binding belt 14 to move downward via the support plate 13. During the downward movement of the binding belt 14, the binding belt 14 wraps around the upper part of the lower pipe. After the upper part of the pipe is wrapped, the ball bearing 8 on the arc rod 7 stops working after it is lower than the support plate 3 on the support component. The upper part of the pipe is limited by the binding belt 14, and the top surface of the support plate 3 is provided with anti-slip pads 10. The pipe is limited on the corresponding support component, which can ensure the stability of the pipe during hot melting. After the opposite ends of the two pipes are heated and melted, the two movable plates are moved upward to the limit state again, pushing the two pipes to move relative to each other, applying pressure to the opposite ends of the two melted pipes to connect them. After the connection is completed, the two movable plates are moved downward simultaneously to limit the two pipes again until the opposite ends of the two pipes cool down, and the connection is completed.
[0021] After the two pipes are connected, the two movable plates 4 are driven upward to their limit state again, the restraint belt 14 releases the restriction on the pipes, and the two pipes are supported by multiple balls 8, which can easily move the two connected pipes along the axial direction. The above steps can be repeated to carry out subsequent pipe connections, or to move the connected pipes axially away from this utility model.
[0022] The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Any equivalent or equivalent modifications or substitutions to the technical solutions of the present utility model without departing from the spirit of the present utility model or the scope of disclosure shall fall within the protection scope of the present utility model.
Claims
1. A PE pipe hot-melt connection device, comprising a base plate (1), characterized in that, The top surface of the base plate (1) is provided with support members on the left and right sides. The support member on the left side includes a vertical plate (2), a support plate (3) and a movable plate (4). The front and rear ends of the top left side of the base plate (1) are fixed with vertical plates (2). The upper ends of the two vertical plates (2) are connected to the opposite sides with a support plate (3). The support plate (3) is an arc-shaped plate with a downward protrusion. The support plate (3) is provided with arc-shaped holes (5) spaced from left to right. The movable plate (4) is provided between the two vertical plates (2) on the lower side of the support plate (3). The top surface of the movable plate (4) is provided with an arc-shaped groove (6) that corresponds to the bottom surface of the support plate (3). The arc-shaped groove (6) is provided with an arc-shaped rod (7) corresponding to each arc-shaped hole (5). The top surface of each arc-shaped rod (7) is provided with balls (8) spaced from front to back.
2. The PE pipe hot-melt connection device according to claim 1, characterized in that, The top surface of the support plate (3) is bonded with an anti-slip pad (10). The anti-slip pad (10) is provided with an arc-shaped hole (15) corresponding to the arc-shaped hole one (5). When the arc-shaped surface of the arc-shaped groove (6) of the movable plate (4) contacts the bottom surface of the upper support plate (3), each arc-shaped rod (7) on the movable plate (4) extends into the corresponding arc-shaped hole one (5). The top surface of the arc-shaped rod (7) is flush with the top surface of the support plate (3). The upper end of each ball (8) on the arc-shaped rod (7) passes through the corresponding arc-shaped hole two (15). The upper end of the ball (8) is higher than the top surface of the anti-slip pad (10).
3. The PE pipe hot-melt connection device according to claim 2, characterized in that, The top surface of the base plate (1) is fixed with a hydraulic cylinder (9) corresponding to each movable plate (4), and the piston end of the hydraulic cylinder (9) is connected to the middle of the bottom surface of the corresponding movable plate (4) with its piston facing upward.
4. The PE pipe hot-melt connection device according to claim 3, characterized in that, The two upright plates (2) on the support member are provided with sliding holes (11), and each sliding hole (11) is provided with a connecting plate (12). The opposite ends of the two connecting plates (12) are respectively connected to the front and rear sides of the movable plate (4). The opposite sides of the two upright plates (2) are provided with support plates (13). The opposite ends of the two connecting plates (12) are respectively connected to the two support plates (13). The upper ends of the two support plates (13) are higher than the upper ends of the upright plates (2). An elastic binding strap (14) is connected between the upper ends of the two support plates (13).
5. A PE pipe hot-melt connection device according to claim 4, characterized in that, When the arc groove (6) of the movable plate (4) contacts the bottom surface of the bearing plate (3), the piston end of the hydraulic cylinder (9) extends to its limit, and the distance from the binding strap (14) to the anti-slip pad (10) is greater than the diameter of the circle on the top surface of the anti-slip pad (10); when the piston end of the hydraulic cylinder (9) retracts to its limit, the upper end of the support plate (13) is flush with the upper end of the upright plate (2).