A flaring machine for processing composite pipe

By using a multi-shaft and gear transmission system to drive the clamping plate to rotate, combined with a flaring machine driven by a self-locking motor and a servo motor, the problem of composite pipe flaring machines adapting to pipes of different sizes has been solved, achieving stable clamping and efficient flaring, and improving processing efficiency and device stability.

CN224446856UActive Publication Date: 2026-07-03LIAONING NORTH STEEL PIPE MANUFACTURING CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LIAONING NORTH STEEL PIPE MANUFACTURING CO LTD
Filing Date
2025-06-23
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing composite pipe flaring machines are difficult to adapt to pipes of different sizes, have unstable clamping and low efficiency, and require cumbersome replacement of the flaring tip.

Method used

A flaring machine for processing composite pipes was designed. It adopts a multi-shaft and gear transmission system, combined with a self-locking motor and a servo motor to drive the clamp plate to flip. It is equipped with multiple flaring heads of increasing size, and the stability of the device is improved by using an air pump and rubber pads.

Benefits of technology

It achieves stable clamping and efficient flaring of pipes of different sizes, reduces the frequency of manual replacement of flaring heads, improves processing efficiency, and enhances the stability and safety of the device.

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Abstract

This utility model discloses a flaring machine for processing composite pipes, relating to the field of composite pipe processing technology. It includes a base and a composite pipe. A clamp is installed on the top of the base, and a positioning groove is provided inside the clamp. The beneficial effects of this utility model are as follows: This flaring machine for processing composite pipes uses multiple sets of rotating shafts on one side of the clamp. Under the action of the meshing of the outer gears and the internal gear ring on the clamp, the multiple sets of gears and rotating shafts drive the multiple sets of rotating shafts to simultaneously rotate the clamping plates at one end of the multiple sets of rotating shafts. The spacing at one end of the multiple sets of clamping plates is adjusted accordingly, facilitating multi-directional clamping of pipes of different sizes and ensuring a closer fit to the pipe. Furthermore, multiple flaring nozzles of different sizes are installed on the support shaft, which are displaced by the extension of an electric push rod. Smaller nozzles can directly pass through the pipe until the required flaring nozzle is aligned with the pipe, eliminating the need for frequent manual replacement and improving efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of composite pipe processing technology, specifically a flaring machine for composite pipe processing. Background Technology

[0002] In the process of composite pipe manufacturing, in order to enhance connection strength, improve sealing performance, adapt to different connection methods, and improve the adaptability of the pipe, it is necessary to flare the ends to increase the diameter of the pipe ends.

[0003] Application No. 201920687569.8 discloses a high-efficiency flaring machine for processing PE pipes. By adding a stabilizing pipe clamping device, it prevents the PE pipe from moving during processing and avoids the PE pipe rotating with the flaring head during processing, thus ensuring the smoothness of the flaring end.

[0004] The pressure plate curvature of the above application is fixed, making it difficult to fit pipes of different sizes and inconvenient to clamp pipes of different sizes. At the same time, different flaring heads need to be manually changed according to the size requirements of the flaring, which is inefficient. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a flaring machine for processing composite pipes, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flaring machine for processing composite pipes, comprising a base and a composite pipe. A clamp is mounted on the top of the base, and a positioning groove is formed inside the clamp. Multiple equidistant rotating shafts are rotatably connected to one side of the clamp. A clamping plate is connected to one end of each of the rotating shafts, and gears are mounted on the outer sides of each of the rotating shafts. A sliding groove is formed inside the clamp and outside the positioning groove. A slide rail is rotatably connected inside the sliding groove. An internal gear ring is connected to one side of the slide rail and outside the multiple gears. The internal gear ring meshes with the multiple gears. The side of the clamp away from the multiple rotating shafts... A self-locking motor is installed, the output end of which is connected to one of the rotating shafts. A limit groove is formed inside the base, and a limit block is slidably connected inside the limit groove. A support plate is connected to the top of the limit block, and a support frame is installed on the top of the support plate. A support shaft is rotatably connected to one side of the support frame. Multiple flared openings are installed on the outside of the support shaft, and the size of the multiple flared openings increases sequentially. A servo motor is installed on the side of the support frame away from the support shaft, and the output end of the servo motor is connected to the support shaft. An electric push rod is installed inside the limit groove and on one side of the limit block, and the output end of the electric push rod is connected to the limit block.

[0007] Preferably, an air chamber is provided inside the base and on one side of the limiting groove, and a plurality of first ventilation holes are provided inside the base and at the bottom of the air chamber. An air pump is installed on the top of the base and on one side of the clamp, and an air pump is connected to the input end of the air pump and an air extraction pipe, one end of which is connected to the air chamber.

[0008] Preferably, a rubber pad is installed at the bottom of the base.

[0009] Preferably, the rubber pad has a plurality of second ventilation holes inside, and the plurality of second ventilation holes are respectively aligned with the positions of a plurality of first ventilation holes.

[0010] Preferably, an electromagnetic heater is installed on the top of the support plate and on one side of the support frame, and an electromagnetic heating coil is connected to the top of the electromagnetic heater, the electromagnetic heating coil being wrapped around the outside of the support shaft.

[0011] Preferably, a control panel is installed on the top of the base and on one side of the support plate.

[0012] This utility model provides a flaring machine for processing composite pipes, which has the following beneficial effects:

[0013] 1. This flaring machine for composite pipe processing uses multiple sets of rotating shafts on one side of the clamp. The meshing of the outer gears and the inner gear rings on the clamps drives the multiple sets of gears and rotating shafts to rotate simultaneously. The spacing between the clamps at one end of each set of rotating shafts is adjusted accordingly, facilitating multi-directional clamping of pipes of different sizes and ensuring a closer fit. Furthermore, the support shaft is equipped with multiple flaring nozzles of different sizes, which are displaced by the extension of an electric push rod. Smaller nozzles can be directly passed through the pipe until the required flaring nozzle is aligned with it, eliminating the need for frequent manual replacement and improving efficiency.

[0014] 2. The flaring machine for processing composite pipes uses an air pump installed on the base to extract air from the air chamber inside the base through the air extraction pipe, creating suction. Multiple first ventilation holes at the bottom of the base then adhere to the tabletop, which helps increase the stability of the base and makes the device less prone to vibration during use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a front sectional view of the present invention;

[0017] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4This is a top view of the present invention.

[0019] In the diagram: 1. Base; 2. Composite pipe; 3. Clamp; 4. Positioning groove; 5. Rotating shaft; 6. Clamping plate; 7. Gear; 8. Slide groove; 9. Slide rail; 10. Internal gear ring; 11. Self-locking motor; 12. Limiting groove; 13. Limiting block; 14. Support plate; 15. Support frame; 16. Support shaft; 17. Expanding head; 18. Electric push rod; 19. Air chamber; 20. First ventilation hole; 21. Air pump; 22. Air extraction pipe; 23. Rubber pad; 24. Second ventilation hole; 25. Electromagnetic heater; 26. Electromagnetic heating coil; 27. Servo motor; 28. Control panel. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1 to 4This utility model provides a technical solution: a flaring machine for processing composite pipes, including a base 1 and a composite pipe 2. A clamp 3 is installed on the top of the base 1. A positioning groove 4 is opened inside the clamp 3. Multiple equidistant rotating shafts 5 are rotatably connected to one side of the clamp 3. One end of each of the multiple rotating shafts 5 is connected to a clamping plate 6. Gears 7 are installed on the outer side of each of the multiple rotating shafts 5. A sliding groove 8 is opened inside the clamp 3 and outside the positioning groove 4. A slide rail 9 is rotatably connected inside the slide groove 8. An internal gear ring 10 is connected to one side of the slide rail 9 and outside the multiple gears 7. The internal gear ring 10 meshes with the multiple gears 7 respectively. Under the action of the internal gear ring 10, the multiple gears 7 and the multiple rotating shafts 5 are transmitted, driving the multiple clamping plates 6 to rotate. The spacing between one end of the multiple clamping plates 6 varies with the rotation of the shafts. The adjustment facilitates clamping and fixing of composite pipes 2 of different sizes. A self-locking motor 11 is installed on the side of the clamp 3 away from the multiple rotating shafts 5. The self-locking motor 11 is a servo motor with locking brake function. The output end of the self-locking motor 11 is connected to one of the rotating shafts 5 to provide power for the rotation of the rotating shaft 5. A limit groove 12 is opened inside the base 1. A limit block 13 is slidably connected inside the limit groove 12. A support plate 14 is connected to the top of the limit block 13. A support frame 15 is installed on the top of the support plate 14. A support shaft 16 is rotatably connected to one side of the support frame 15. Multiple flared ends 17 are installed on the outside of the support shaft 16. The size of the multiple flared ends 17 increases sequentially, so that the smaller flared ends 17 can directly pass through the composite pipe 2. According to the flaring requirements, a flaring head 17 of the required size is used. A servo motor 27 is installed on the side of the support frame 15 away from the support shaft 16. The output end of the servo motor 27 is connected to the support shaft 16 through a motor shaft direct connector. The motor shaft direct connector is a coupling made of low thermal conductivity material. An electric push rod 18 is installed inside the limiting groove 12 and on one side of the limiting block 13. The output end of the electric push rod 18 is connected to the limiting block 13, pushing the limiting block 13 to move, causing the support frame 15 above it to move the support shaft 16 and the flaring head 17. The flaring head 17 of the required size can be inserted into the flaring of the composite pipe 2, which is convenient for enlarging the size of one end of the composite pipe 2. An electromagnetic heater 25 is installed on the top of the support plate 14 and on one side of the support frame 15. An electromagnetic heating coil 26 is connected to the top of the support shaft 16. The electromagnetic heating coil 26 is wrapped around the outside of the support shaft 16. The support shaft 16 and the flaring head 17 are made of materials with good thermal conductivity to increase the temperature of the support shaft 16 and the flaring head 17. During flaring, the port of the composite pipe 2 is heated from the inside, ensuring that the temperature at the flared end of the composite pipe 2 does not drop and preventing the PE pipe from cracking. A control panel 28 is installed on the top of the base 1 and on one side of the support plate 14. An air chamber 19 is opened inside the base 1 and on one side of the limiting groove 12. Multiple first ventilation holes 20 are opened inside the base 1 and at the bottom of the air chamber 19. A vacuum pump 21 is installed on the top of the base 1 and on one side of the clamp 3. The input end of the vacuum pump 21 is connected to a vacuum pipe 22.One end of the suction pipe 22 is connected to the air chamber 19. Under the action of the suction pump 21, the air in the air chamber 19 is extracted, causing the multiple first ventilation holes 20 to generate suction, adhering to the tabletop and increasing the stability of the device. A rubber pad 23 is installed at the bottom of the base 1. The rubber pad 23 has multiple second ventilation holes 24 inside, which are aligned with the positions of the multiple first ventilation holes 20. This increases friction with the tabletop, preventing the device from shifting and avoiding blockage of the multiple first ventilation holes 20.

[0022] In summary, when using this flaring machine for composite pipe processing, the air pump 21 operates, drawing air out of the air chamber 19 inside the base 1 through the air extraction pipe 22. This creates suction between the air chamber 19 and the multiple first ventilation holes 20 and second ventilation holes 24, adhering to the tabletop. After the composite pipe 2 passes through the positioning groove 4 inside the clamp 3, the self-locking motor 11 is activated, driving one of the rotating shafts 5 on one side of the clamp 3 to rotate. Since the gears 7 on the outer sides of the multiple rotating shafts 5 mesh with the internal gear rings 10 rotatably connected to one side of the clamp 3, the multiple gears 7 and the multiple rotating shafts 5 transmit power and rotate simultaneously. The clamping plates 6 at one end of the multiple rotating shafts 5 also flip, clamping the composite pipe 2. At this time, the electric push rod 18 drives the limit block 13 to move, and the support plate 14 and support frame 15 above the limit block 13 move. The flared end 17 on the support shaft 16 on one side of the support frame 15 is then inserted into the composite pipe 2. The small flared end 17 directly enters the composite pipe 2, while the flared end 17 of the required size resists one end of the composite pipe 2. Under the action of force, the flared end 17 is inserted into the composite pipe 2, expanding the diameter of one end of the composite pipe 2. At the same time, the electromagnetic heater 25 is running. The electromagnetic heating coil 26 on the electromagnetic heater 25 is located outside the support shaft 16, which increases the temperature of the support shaft 16 and the flared end 17.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pipe expander for processing a composite pipe, comprising a base (1) and a composite pipe (2), characterized in that: A clamp (3) is installed on the top of the base (1). A positioning groove (4) is provided inside the clamp (3). Multiple equidistant rotating shafts (5) are rotatably connected to one side of the clamp (3). One end of each of the multiple rotating shafts (5) is connected to a clamp plate (6). Gears (7) are installed on the outer side of each of the multiple rotating shafts (5). A sliding groove (8) is provided inside the clamp (3) and outside the positioning groove (4). A slide rail (9) is rotatably connected inside the slide groove (8). An internal gear ring (10) is connected to one side of the slide rail (9) and outside the multiple gears (7). The internal gear ring (10) meshes with the multiple gears (7). A self-locking motor (11) is installed on the side of the clamp (3) away from the multiple rotating shafts (5). The output end of the self-locking motor (11) is connected to one of the rotating shafts (5). A limiting groove (12) is provided inside the seat (1). A limiting block (13) is slidably connected inside the limiting groove (12). A support plate (14) is connected to the top of the limiting block (13). A support frame (15) is installed on the top of the support plate (14). A support shaft (16) is rotatably connected to one side of the support frame (15). Multiple expansion joints (17) are installed on the outside of the support shaft (16). The size of the multiple expansion joints (17) increases sequentially. A servo motor (27) is installed on the side of the support frame (15) away from the support shaft (16). The output end of the servo motor (27) is connected to the support shaft (16). An electric push rod (18) is installed inside the limiting groove (12) and on one side of the limiting block (13). The output end of the electric push rod (18) is connected to the limiting block (13).

2. A pipe expander for processing a composite pipe according to claim 1, characterized in that: An air chamber (19) is provided inside the base (1) and on one side of the limiting groove (12). Multiple first ventilation holes (20) are provided inside the base (1) and at the bottom of the air chamber (19). An air pump (21) is installed on the top of the base (1) and on one side of the clamp (3). An air pump (22) is connected to the input end of the air pump (21). One end of the air pump (22) is connected to the air chamber (19).

3. The pipe expander of claim 1 wherein: A rubber pad (23) is installed at the bottom of the base (1).

4. The pipe expander of claim 3 wherein: The rubber pad (23) has multiple second ventilation holes (24) inside, and the multiple second ventilation holes (24) are respectively aligned with the positions of multiple first ventilation holes (20).

5. The pipe expanding machine of claim 1 wherein: An electromagnetic heater (25) is installed on the top of the support plate (14) and on one side of the support frame (15). An electromagnetic heating coil (26) is connected to the top of the electromagnetic heater (25) and the electromagnetic heating coil (26) is wrapped around the outside of the support shaft (16).

6. The pipe expanding machine of claim 1 wherein: A control panel (28) is installed on the top of the base (1) and on one side of the support plate (14).