A shaping tool for a flexible pipe

Abstract

The application discloses a shaping tool for a flexible pipe and relates to the technical field of pipe forming, and is suitable for manufacturing flexible pipes with complex spatial shapes, including compressor pipes, and comprises a shaping rod, an upper limiting piece and a lower limiting piece, a spiral-shaped shaping groove is formed in the shaping rod, a flexible pipe body is placed in the shaping groove, the upper limiting piece is detachably arranged on the shaping rod and limits the top end of the flexible pipe body, and the lower limiting piece is detachably arranged on the shaping rod and limits the bottom end of the flexible pipe body. The application first heats a linear flexible pipe body, limits the upper end of the flexible pipe body by using the upper limiting piece, then winds the flexible pipe body in the shaping groove of the shaping rod, limits the lower end of the flexible pipe body by using the lower limiting piece, and then fixes the flexible pipe body in the shaping groove, after the flexible pipe body is cooled, the upper limiting piece and the lower limiting piece are detached and removed, and the shaping of the flexible pipe body can be quickly completed.

Description

Technical Field

[0001] This application relates to the field of pipe forming technology, and in particular to a shaping tooling for flexible pipes. Background Technology

[0002] Taking compressor tubing as an example, compressor tubing is a key connecting component in refrigeration, air conditioning, and various fluid compression systems, mainly used to transport high-pressure gaseous or liquid media. Conventional compressor tubing is usually made of copper alloy tubing or metal tubing with a protective coating. These materials have high strength and pressure resistance, which can meet the basic requirements for system operation.

[0003] In practical applications, the vibrations generated by the compressor are transmitted through the piping. Traditional compressor tubing, made of rigid metal, tends to amplify vibrations and generate significant noise due to its high inherent stiffness. To address this issue, compressor tubing made of flexible plastic is now commonly designed with a spiral shape in the middle and straight sections at both ends. The spiral section acts as an elastic buffer and damping element, effectively isolating and attenuating vibration transmission, thereby significantly reducing system operating noise.

[0004] However, while the spiral structure achieves good vibration reduction, it also brings challenges to the manufacturing process: how to stably and accurately shape the flexible tube into a complex shape with a spiral in the middle and straight lines at both ends is a key difficulty that needs to be solved in the current production process. Summary of the Invention

[0005] To facilitate the production of flexible compressor tubes with straight ends and a central spiral, this application provides a shaping tooling for flexible tubes.

[0006] The shaping fixture for a flexible tube provided in this application adopts the following technical solution: A shaping fixture for a flexible tube includes a shaping rod, an upper limit member, and a lower limit member. The shaping rod has a spiral shaping groove, and the flexible tube is placed in the shaping groove. The upper limit member is detachably mounted on the shaping rod and limits the top end of the flexible tube. The lower limit member is detachably mounted on the shaping rod and limits the bottom end of the flexible tube.

[0007] By adopting the above technical solution, the straight flexible tube is first heated, the upper limit component is used to limit the upper end of the flexible tube, the flexible tube is then wound around the shaping groove of the shaping rod, and the lower limit component is used to limit the lower end of the flexible tube, thereby fixing the flexible tube in the shaping groove. After the flexible tube cools down, the upper limit component and the lower limit component are disassembled and removed, and the shaping of the flexible tube can be completed quickly.

[0008] Preferably, the upper limit member includes an upper limit ring and a first fixing member. The upper limit ring is slidably disposed on the shaping rod. A first limiting groove is formed on the inner side wall of the upper limit ring. A second limiting groove connected to the shaping groove is formed at the upper end of the shaping rod. The flexible tube is located in the first limiting groove and the second limiting groove. The first fixing member is disposed in the upper limit ring and is used to fix the upper limit ring to the shaping rod.

[0009] By adopting the above technical solution, the upper end of the flexible tube is placed in the second limiting groove, the upper limiting ring is slidably sleeved on the shaping rod and the flexible tube enters the first limiting groove, and then the first fixing member is used to fix the upper limiting ring on the shaping rod. At this time, the first limiting groove and the second limiting groove cooperate to limit the upper end of the flexible tube.

[0010] Preferably, the lower limiting component includes a lower limiting ring and a second fixing component. The lower limiting ring is slidably disposed on the shaping rod. A lower limiting groove is formed at the top of the lower limiting ring, and the flexible tube is located in the lower limiting groove. The second fixing component is disposed in the lower limiting ring and is used to fix the lower limiting ring on the shaping rod.

[0011] By adopting the above technical solution, after the flexible tube is wound in the shaping groove, the lower limiting ring is slidably sleeved on the shaping rod and the flexible tube enters the lower limiting groove. Then, the second fixing component is used to fix the lower limiting ring on the shaping rod. At this time, the lower limiting groove and the shaping groove cooperate to limit the lower end of the flexible tube.

[0012] Preferably, the lower limit ring includes a lifting ring body and a rotating ring body. The lifting ring body is slidably mounted on the shaping rod. The second fixing member is mounted inside the lifting ring body. The rotating ring body is coaxially rotatably mounted on the lifting ring body. The lower limit groove is opened at the top of the rotating ring body. A third fixing member is provided inside the rotating ring body. The top of the lifting ring body has multiple fixing holes evenly spaced along its circumference. The third fixing member is threadedly fixed in the fixing holes.

[0013] By adopting the above technical solution, after the flexible tube is wound a specified number of times in the shaping groove, the lifting ring first drives the rotating ring to move upward, then the rotating ring rotates to allow the lower end of the flexible tube to enter the lower limit groove. Finally, the second fixing member limits the upward and downward movement of the lifting ring, and the third fixing member limits the rotation of the rotating ring, thus limiting the lower end of the flexible tube. With this configuration, after the upper limit member limits the upper end of the flexible tube, the lower limit member can limit the lower end of flexible tubes of different lengths, making the shaping fixture applicable to shaping flexible tubes of different lengths.

[0014] Preferably, a planar limiting wall is formed on the outer wall of the shaping rod, and the inner wall of the lifting ring moves to fit against the planar limiting wall.

[0015] By adopting the above technical solution, when the lifting ring moves up and down, its inner wall is attached to the plane limiting wall of the shaping rod, thereby playing the role of placing and rotating the lifting ring, making the lifting and moving of the lifting ring more stable.

[0016] Preferably, a rotating ring is fixedly provided on the bottom wall of the rotating ring body, and a rotating groove is provided on the top wall of the lifting ring body, and the rotating ring is rotatably disposed in the rotating groove.

[0017] By adopting the above technical solution, the rotating ring drives the rotating ring to rotate in the rotating groove of the lifting ring when it rotates. The rotating ring and the rotating groove cooperate to make the rotation of the rotating ring more stable.

[0018] Preferably, a limiting pin is provided inside the shaping rod along its own radial direction, with both ends of the limiting pin extending out of the shaping rod, and the bottom wall of the upper limiting ring moving to abut against both ends of the limiting pin.

[0019] By adopting the above technical solution, when the upper limit ring is slidably installed, the limiting pin limits the installation position of the upper limit ring, thereby facilitating the staff to quickly and accurately install the upper limit ring.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. Using a shaping fixture, first heat the straight flexible tube. Use an upper limit component to limit the upper end of the flexible tube. Then, wind the flexible tube into the shaping groove of the shaping rod and use a lower limit component to limit the lower end of the flexible tube. This fixes the flexible tube in the shaping groove. After the flexible tube cools down, remove the upper and lower limit components to quickly complete the shaping of the flexible tube. 2. After the flexible tube is wound a specified number of times in the shaping groove via the lifting ring and the rotating ring, the lifting ring first drives the rotating ring to move upward, and then the rotating ring rotates so that the lower end of the flexible tube enters the lower limit groove. Finally, the second fixing member limits the lifting movement of the lifting ring, and the third fixing member limits the rotation of the rotating ring, thus limiting the lower end of the flexible tube. In this way, after the upper limit member limits the upper end of the flexible tube, the lower limit member can limit the lower end of flexible tubes of different lengths, so that the shaping fixture can be used to shape flexible tubes of different lengths. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall structure of the tooling used in this application for shaping the flexible tube. Figure 2 This is an exploded view of the overall structure of the tooling for this application. Figure 3 This is a partial structural sectional view of the tooling used in this application; Figure 4 This is a partial exploded view of the tooling used in this application. Figure 5 This is a partial exploded reverse view of the tooling used in this application.

[0022] Reference numerals: 1. Flexible tube body; 5. Shaping rod; 6. Upper limit component; 61. Upper limit ring; 62. First fixing component; 7. Lower limit component; 71. Lower limit ring; 711. Lifting ring body; 712. Rotating ring body; 72. Second fixing component; 8. Shaping groove; 9. First limiting groove; 10. Second limiting groove; 11. Lower limiting groove; 12. Third fixing component; 13. Fixing hole; 14. Planar limiting wall; 15. Rotating ring; 16. Rotating groove; 17. Limiting pin. Detailed Implementation

[0023] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0024] This application discloses a shaping tooling for flexible tubes.

[0025] Reference Figure 1 A shaping fixture for a flexible tube includes a shaping rod 5, an upper limit member 6, and a lower limit member 7. A spiral shaping groove 8 is formed on the outer wall of the middle part of the shaping rod 5 along its own circumference, and a second limiting groove 10 is formed on the outer wall of the top of the shaping rod 5 at an angle, with the bottom end of the second limiting groove 10 communicating with the top end of the shaping groove 8.

[0026] The flexible tube 1 is located in the second limiting groove 10 and the shaping groove 8. The upper limiting member 6 is detachably installed at the top of the shaping rod 5 and limits the top of the flexible tube 1. The lower limiting member 7 is detachably installed at the bottom of the shaping rod 5 and limits the bottom of the flexible tube 1.

[0027] When shaping the flexible tube 1, the straight flexible tube 1 is first heated to make it easy to shape, and both ends of the flexible tube 1 are bent to a specified angle. Then, the upper end of the flexible tube 1 is placed into the second limiting groove 10 and positioned by the upper limiting member 6, and the flexible tube 1 is wound around the shaping groove 8 of the shaping rod 5. After winding, the lower limiting member 7 is used to fix the lower end of the tube, so that the flexible tube 1 is stably held in the shaping groove 8. After the flexible tube 1 is naturally cooled or assisted cooled in the shaping groove 8 to achieve the desired shape, the upper limiting member 6 and the lower limiting member 7 are removed to obtain the flexible tube 1 with the predetermined spiral shape.

[0028] Reference Figure 3 and Figure 4Specifically, the upper limit member 6 includes an upper limit ring 61 and a first fixing member 62. The upper limit ring 61 is detachably and slidably sleeved on the top of the shaping rod 5. A first limiting groove 9 is obliquely opened on the inner side wall of the upper limit ring 61. The flexible tube 1 is located in the first limiting groove 9, and the first limiting groove 9 and the second limiting groove 10 limit the upper end of the flexible tube 1.

[0029] A limiting pin 17 is fixedly inserted through the upper end of the shaping rod 5 along its own diameter direction. Both ends of the limiting pin 17 in the length direction are located outside the shaping rod 5, and the bottom end of the upper limiting ring 61 slides against the limiting pin 17. The first fixing member 62 is threadedly installed in the upper limiting ring 61. In this application, the first fixing member 62 can be selected as a bolt, and the end of the first fixing member 62 moves to press against the outer wall of the shaping rod 5.

[0030] First, the upper end of the flexible tube 1 is placed within the second limiting groove 10. Then, the upper limiting ring 61 is fitted onto the shaping rod 5 and slid down along the rod until the flexible tube 1 is embedded in the first limiting groove 9 of the upper limiting ring 61. When the upper limiting ring 61 slides down to its bottom and contacts the preset limiting pin 17, it reaches the predetermined position. At this point, the upper limiting ring 61 is fastened to the shaping rod 5 by the first fixing member 62. In this state, the first limiting groove 9 and the second limiting groove 10 work together to effectively limit the upper end of the flexible tube 1.

[0031] Reference Figure 3 , Figure 4 and Figure 5 The lower limiting member 7 includes a lower limiting ring 71 and a second fixing member 72. The lower limiting ring 71 consists of a lifting ring body 711 and a rotating ring body 712. The lifting ring body 711 is detachably and slidably installed at the bottom end of the shaping rod 5. A planar limiting wall 14 is formed on the outer wall of the bottom of the shaping rod 5 and the shaping groove 8. The inner side wall of the lifting ring body 711 abuts against and fits against the outer side wall of the shaping rod 5 and the planar limiting wall 14, so that the lifting ring body 711 will not rotate during the lifting and lowering movement on the shaping rod 5. The second fixing member 72 is threadedly installed on the lifting ring body 711. In this application, the second fixing member 72 can be selected as a bolt. The end of the second fixing member 72 moves to press against the shaping rod 5, thereby fixing the lifting ring body 711 on the shaping rod 5.

[0032] The rotating ring 712 is coaxially mounted on the top of the lifting ring 711, and rotates on the fixing rod 5. A rotating ring 15 is fixedly mounted on the bottom wall of the rotating ring 712, and a circular rotating groove 16 is formed on the top wall of the lifting ring 711. The rotating ring 15 is rotatably mounted in the rotating groove 16, making the rotation of the rotating ring 712 on the lifting ring 711 more stable. A lower limiting groove 11 is formed on the top wall of the rotating ring 712, and the bottom end of the flexible tube 1 is located in the lower limiting groove 11. A third fixing member 12 is installed inside the rotating ring 712, and multiple fixing holes 13 are equally spaced along the circumference of the top wall of the lifting ring 711. In this application, the third fixing member 12 can be a bolt, and the fixing holes 13 are threaded holes. By rotating the third fixing member 12, the third fixing member 12 is threaded into the fixing holes 13, thereby fixing the rotating ring 712 on the lifting ring 711.

[0033] After the flexible tube 1 is wound inside the shaping groove 8, the lifting ring 711 first moves the rotating ring 712 to a suitable height, and then rotates the rotating ring 712 so that its lower limiting groove 11 is aligned with and accommodates the lower end of the flexible tube 1. Finally, the height position of the lifting ring 711 is locked by the second fixing member 72, and the circumferential position of the rotating ring 712 is locked by the third fixing member 12, thereby completing the stable positioning of the lower end of the flexible tube 1.

[0034] This design, through a combination of lifting and rotation adjustment, allows the position of the lower limit component 7 to flexibly match the actual endpoint of the flexible tube 1 after winding, thereby significantly improving the versatility of the shaping tooling and enabling it to be stably and reliably applied to the forming operation of flexible tubes 1 of different lengths.

[0035] The implementation principle of this application embodiment is as follows: When shaping the flexible tube 1, the straight flexible tube 1 is first heated to make it easy to shape, and the two ends of the flexible tube 1 are bent to a specified angle; then, the upper end of the flexible tube 1 is placed in the second limiting groove 10 and positioned by the upper limiting member 6, and the flexible tube 1 is wound around the shaping groove 8 of the shaping rod 5; after the winding is completed, the lower limiting member 7 is used to fix the lower end of the tube, so that the flexible tube 1 is stably held in the shaping groove 8; after the flexible tube 1 is naturally cooled or assisted cooled in the shaping groove 8 to achieve the desired shape, the upper limiting member 6 and the lower limiting member 7 are removed, and a flexible tube 1 with a predetermined spiral shape can be obtained.

[0036] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A shaping fixture for a flexible tube, characterized in that: The device includes a shaping rod (5), an upper limit member (6), and a lower limit member (7). The shaping rod (5) has a spiral shaping groove (8), and the flexible tube (1) is placed in the shaping groove (8). The upper limit member (6) is detachably mounted on the shaping rod (5) and limits the top end of the flexible tube (1). The lower limit member (7) is detachably mounted on the shaping rod (5) and limits the bottom end of the flexible tube (1). The lower limit member (7) includes a lower limit ring (71) and a second fixing member (72). The lower limit ring (71) is slidably mounted on the shaping rod (5). The top end of the lower limit ring (71) has a lower limit groove (11), and the flexible tube (1) is located in the lower limit groove (11). The second fixing member (72) is set... The lower limit ring (71) is used to fix the lower limit ring (71) to the shaping rod (5); the lower limit ring (71) includes a lifting ring body (711) and a rotating ring body (712). The lifting ring body (711) is slidably disposed on the shaping rod (5). The second fixing member (72) is disposed in the lifting ring body (711). The rotating ring body (712) is coaxially rotatably disposed on the lifting ring body (711). The lower limit groove (11) is opened at the top of the rotating ring body (712). The rotating ring body (712) is provided with a third fixing member (12). The top of the lifting ring body (711) is provided with multiple fixing holes (13) at equal intervals along its circumference. The third fixing member (12) is threadedly fixed in the fixing holes (13). A planar limiting wall (14) is formed on the outer side wall of the shaping rod (5). The inner wall of the lifting ring (711) moves to fit the planar limiting wall (14). A rotating ring (15) is fixedly installed on the bottom wall of the rotating ring (712). A rotating groove (16) is opened on the top wall of the lifting ring (711). The rotating ring (15) is rotatably installed in the rotating groove (16).

2. The shaping tooling according to claim 1, characterized in that: The upper limit member (6) includes an upper limit ring (61) and a first fixing member (62). The upper limit ring (61) is slidably disposed on the shaping rod (5). A first limiting groove (9) is provided on the inner side wall of the upper limit ring (61). A second limiting groove (10) connected to the shaping groove (8) is provided at the upper end of the shaping rod (5). The flexible tube (1) is located in the first limiting groove (9) and the second limiting groove (10). The first fixing member (62) is disposed in the upper limit ring (61) and is used to fix the upper limit ring (61) on the shaping rod (5).

3. The shaping tooling according to claim 2, characterized in that: A limiting pin (17) is provided inside the shaping rod (5) along its own radial direction. The two ends of the limiting pin (17) extend out of the shaping rod (5), and the bottom wall of the upper limit ring (61) moves to abut against the two ends of the limiting pin (17).

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