A high-temperature hot-melt splicing device for ultra-high molecular weight polyethylene pipes

Abstract

This utility model relates to a high-temperature hot-melt splicing device for ultra-high molecular weight polyethylene (UHMWPE) pipes, belonging to the field of polyethylene pipes. It includes a support frame, an internal support component, a laser heater, a robotic arm, a filling ring, and an external extruder. A first and second splicing pipe are fitted onto the internal support component. The laser heater is fixed to the robotic arm, which is located on one side of the support frame. The filling ring is fitted onto the splice of the first and second splicing pipes. The robotic arm drives the laser heater to hot-melt the splice and the filling ring, and then the external extruder is pressed onto the hot-melted area for cooling and shaping. This utility model patent utilizes laser heating technology to complete the hot-melt splicing, eliminating the need for embedded heating wires. By adding a filling ring, the splice, after extrusion and cooling, has the same strength as the non-spliced ​​area and prevents leaks.

Description

Technical Field

[0001] This utility model relates to a high-temperature hot-melt splicing device for ultra-high molecular weight polyethylene pipes, belonging to the field of polyethylene pipes. Background Technology

[0002] Existing hot-melt splicing devices for ultra-high molecular weight polyethylene (UHMWPE) pipes cannot meet design requirements. A UHMWPE pipe electrofusion socket welding device with patent number CN2014201255713 requires flaring and shrinking the ends of two pipe sections to be spliced, and wrapping electric heating wires around the shrinked ends. During the splicing process, the electric heating wires are wrapped inside the pipe and are difficult to remove. Summary of the Invention

[0003] Based on the problems described in the background, the problem that this utility model aims to solve is:

[0004] How to design a hot melt splicing process that does not require embedding electric heating wires.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-temperature hot-melt splicing device for ultra-high molecular weight polyethylene (UHMWPE) pipes includes a support frame and an internal support component. A first splicing pipe and a second splicing pipe are fitted onto the internal support component and placed on the support frame. The device also includes a laser heater, a robotic arm, a filling ring, and an external extruder. The laser heater is fixed to the robotic arm, which is located on one side of the support frame. The filling ring is fitted onto the splicing joint of the first and second splicing pipes. After the robotic arm drives the laser heater to heat-melt the splicing joint and the filling ring, the external extruder is pressed onto the heat-melted joint for cooling and shaping. An industrial camera is mounted on the robotic arm to identify and locate the splicing joint after the filling ring is inserted.

[0007] With the development of laser heaters, laser heaters capable of synchronously heating rectangular areas are widely used, making it possible to apply laser heating to the polyethylene pipe industry. A robotic arm controls the laser heater to heat approximately one-third of the top section of the splice and the corresponding filler ring, bringing them to a molten state. Then, the external extrusion component, which adheres to the pipe wall, is placed at the molten area, and together with the internal support component, extrusion, cooling, and shaping are completed. After shaping, the pipe wall is rotated so that the un-molded section is at the top of the spliced ​​pipe, facilitating subsequent extrusion using the external extrusion component.

[0008] The filler rings serve to position and replenish material during the splicing process, ensuring no gaps appear after assembly. Hot melt adhesive can also be added to assist in the splicing process.

[0009] Preferably, the bracket adopts multiple X-shaped structures, with the joint between two adjacent X-shaped structures being the heat-fused joint. The X-shaped structure is the simplest frame structure, simple and durable. It should be noted that the length of the internal support component must be longer than the interval between two X-shaped structures to ensure the supporting effect.

[0010] Preferably, the filler ring is red. It can also be any other color that is clearly distinguishable from the black tubing, improving the filler ring's visibility and facilitating the industrial camera on the robotic arm to identify the location requiring heat fusion.

[0011] The beneficial effects of this utility model are:

[0012] This utility model patent utilizes laser heating technology to complete the hot-melt splicing, eliminating the need to embed heating wires; by adding a filler ring, the spliced ​​area has the same strength as the non-spliced ​​area after extrusion and cooling molding, and no leakage points are generated. Attached Figure Description

[0013] Figure 1 Top view of this utility model

[0014] Figure 2 Front view of the external extrusion part

[0015] In the diagram: 1 is the support frame; 2 is the laser heater; 3 is the robotic arm; 4 is the filling ring; 5 is the first splicing pipe; 6 is the second splicing pipe; 7 is the internal support component; 8 is the external extrusion component; 9 is the splicing joint. Detailed Implementation

[0016] Example 1

[0017] A high-temperature hot-melt splicing device for ultra-high molecular weight polyethylene (UHMWPE) pipes includes a support 1 and an internal support 7. A first splicing pipe 5 and a second splicing pipe 6 are fitted onto the internal support 7 and placed on the support 1. The device also includes a laser heater 2, a robotic arm 3, a filling ring 4, and an external extruder 8. The laser heater 2 is fixed to the robotic arm 3, which is located on one side of the support 1. The filling ring 4 is fitted onto the splicing joint 9 of the first splicing pipe 5 and the second splicing pipe 6. After the laser heater 2 melts the splicing joint 9 and the filling ring 4, the external extruder 8 is pressed onto the melted joint for cooling and shaping. An industrial camera is mounted on the robotic arm 3 to identify the filling ring 4 and locate the splicing joint 9.

[0018] The bracket 1 adopts multiple X-shaped structures, and the splicing point 9 is placed between two adjacent X-shaped structures.

[0019] The filler ring 4 is red.

[0020] Working principle:

[0021] First, the filling ring 4 is fitted onto the first splicing pipe 5 or the second splicing pipe 6. Then, the first splicing pipe 5 and the second splicing pipe 6 are fitted onto the internal support 7. Finally, the filling ring 4 is moved to the splice 9. After completing the preparation work, the robotic arm 3 is started. The robotic arm 3 is aligned with the filling ring 4, and the laser heater 2 heats and melts the filling ring 4 and the splice 9. After the heat is melted, the laser heater 2 stops working, and the robotic arm 3 is adjusted to the waiting state. The external extrusion part 8 is pressed onto the heat-melted area, and the area is allowed to cool and solidify. After solidification, the splicing pipe is rotated, and the unmelted splice 9 is adjusted to the top. The robotic arm 3 is started again to complete the heat-melting, extrusion, and cooling process. After 3-4 cycles, the heat-melting splicing of the entire pipe is completed. After inspection, it is removed from the support 1 and left to stand.

Claims

1. A high-temperature hot-melt splicing device for ultra-high molecular weight polyethylene pipes, comprising a support (1) and an internal support (7), a first splicing pipe (5) and a second splicing pipe (6) are sleeved on the internal support (7), and the first splicing pipe (5) and the second splicing pipe (6) are placed on the support (1); characterized in that, It also includes a laser heater (2), a robotic arm (3), a filling ring (4), and an external extruder (8). The laser heater (2) is fixed on the robotic arm (3). The robotic arm (3) is set on one side of the bracket (1). The filling ring (4) is sleeved on the splice (9) of the first splice tube (5) and the second splice tube (6). After the laser heater (2) heats and melts the splice (9) and the filling ring (4), it presses the external extruder (8) on the heat-melted area and cools and shapes it. The robotic arm (3) is equipped with an industrial camera to identify the filling ring (4) and locate the splice (9).

2. The ultra-high molecular weight polyethylene pipe high-temperature hot melt splicing device according to claim 1, characterized in that, The bracket (1) adopts multiple X-shaped structures, and the splicing point (9) is located between two adjacent X-shaped structures.

3. The ultra-high molecular weight polyethylene pipe high-temperature hot-melt splicing device according to claim 1, characterized in that, The filling ring (4) is red.

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