Fixing device for pipe cutting

Abstract

The fixing device for pipe cutting comprises a plurality of pipe supporting frames distributed in a row and a pipe clamping mechanism, each pipe supporting frame comprises a frame body and two supporting rods used for supporting pipes and distributed in an X shape, the middle portions of the two supporting rods are hinged, and the middle portions of the two supporting rods are hinged to each other. The top end of the supporting rod is rotatably connected with a roller through a rotating shaft, the bottom end of the supporting rod is rotatably connected with a moving block and a guide limiting wheel, a rotatable two-way screw rod is arranged on the frame body, the moving block is in threaded connection with the two-way screw rod, and a guide limiting groove axially parallel to the two-way screw rod is further formed in the frame body. The guide limiting wheel is located in the guide limiting groove. The device is suitable for pipes of different sizes within a certain range, the universality of the device is remarkably improved, it can be ensured that the pipes are stably supported in the machining process, meanwhile, the rotating torque and surface friction of the pipes are reduced, and the risk that the pipes are scratched in the feeding, discharging and machining processes is reduced.

Description

Technical Field

[0001] This application relates to the field of metal processing equipment technology, and in particular to a fixing device for pipe cutting. Background Technology

[0002] The main cutting methods used in pipe processing include laser cutting, plasma cutting, and sawing. Each method has its own advantages and disadvantages and is suitable for different scenarios. Before cutting, the pipe usually needs to be effectively fixed to ensure the quality of the cut.

[0003] Existing pipe fixing devices are basically fixed support structures or simple V-groove structures, which are difficult to adapt to pipes of different sizes. They require frequent replacement of parts during use, making operation cumbersome and inefficient. In addition, the rotation / friction resistance of the pipe is large, which can easily cause scratches on the pipe surface and affect the quality of the finished product. Summary of the Invention

[0004] In order to solve at least one of the above-mentioned technical problems, and to develop a device that can adapt to pipes of different sizes within a certain range, effectively improve the versatility of the device, and ensure stable support of the pipes during processing, while reducing the rotational torque and surface friction of the pipes and reducing the risk of pipe scratches during loading, unloading and processing, this application provides a pipe cutting fixing device.

[0005] This application provides a fixing device for pipe cutting, including multiple pipe support frames and a pipe clamping mechanism arranged in a row. The pipe support frame includes a frame body and two support rods arranged in an "X" shape for supporting the pipe. The middle of the two support rods is hinged together. The top of the support rod is rotatably connected to a roller via a rotating shaft. The bottom of the support rod is rotatably connected to a moving block and a guide limiting wheel. A rotatable bidirectional screw is installed on the frame body. The moving block is threadedly connected to the bidirectional screw. The frame body is also provided with a guide limiting groove parallel to the axial direction of the bidirectional screw. The guide limiting wheel is located in the guide limiting groove.

[0006] Optionally, the number of pipe support frames is set to 4 to 6.

[0007] Optionally, an "L"-shaped handle is fixedly installed at one end of the bidirectional screw.

[0008] Optionally, the height of the frame is adjustable.

[0009] Optionally, the frame can be detachably connected to a support base, and the support base is equipped with a plurality of adjusting bolts for adjusting the height of the support base.

[0010] Optionally, the pipe clamping mechanism includes a chuck box and a height-adjustable chuck box base. The chuck box includes a chuck for clamping the pipe. A linear displacement component is provided between the chuck box and the chuck box base for driving the chuck box to move horizontally toward or away from the pipe support frame.

[0011] Alternatively, the chuck may be a manual chuck or a pneumatic chuck.

[0012] Further optionally, the linear displacement assembly includes a cylinder and two slide rails fixedly mounted on the chuck box base, and a slider fixedly mounted on the chuck box and slidingly engaged with the slide rails; the end of the cylinder's extension rod away from the cylinder body is connected to the chuck box.

[0013] Alternatively, the slider may surround the outer edge of the slide rail.

[0014] Further optionally, the slider is a fully enclosed structure or a semi-enclosed structure.

[0015] In summary, this utility model has at least one of the following beneficial technical effects:

[0016] 1. This application achieves rapid adjustment of roller spacing through the linkage design of a bidirectional screw and two support rods distributed in an "X" shape, as well as multiple pipe support frames, which can adapt to pipes of different diameters and lengths within a certain range and significantly improve the versatility of the device.

[0017] 2. The “X”-shaped support structure designed in this application, combined with rollers, can not only ensure stable support of the pipe during processing, but also effectively reduce the rotational torque and surface friction of the pipe, thereby reducing the risk of pipe scratches during loading, unloading, and processing.

[0018] 3. This application adopts a synergistic guide limit wheel and guide limit groove to ensure the stability of the movement trajectory of the moving block and support rod, while significantly improving the load-bearing capacity of the "X" shaped support structure and extending the service life of the device.

[0019] 4. The design of the slider surrounding the outer edge of the slide rail in this application can improve positioning accuracy, avoid chuck box offset and cutting error caused by lateral force, suppress vibration transmission, reduce vibration amplitude, improve stability in high-precision processing scenarios such as thin-walled pipes, enhance sealing, reduce impurity intrusion, extend the service life of the slide rail and slider, and ensure long-term operational reliability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the fixing device of this application;

[0021] Figure 2 This is a schematic diagram of the pipe support frame for the fixing device in this application;

[0022] Figure 3 This is a partial structural schematic diagram of the pipe support frame of this application;

[0023] Figure 4 for Figure 2 Schematic diagram of the structure of the middle support frame base and adjusting bolts;

[0024] Figure 5 This is a schematic diagram of the pipe clamping mechanism of the fixing device in this application;

[0025] In the diagram: 10. Pipe support frame, 11. Frame body, 12. Roller, 13. Double-acting screw, 131. Handle, 14. Support rod, 15. Moving block, 16. Guide limit wheel, 17. Guide limit groove, 18. Support frame base, 19. Adjusting bolt, 20. Pipe clamping mechanism, 21. Chuck box, 211. Chuck, 22. Chuck box base, 23. Cylinder, 24. Slide rail, 25. Slider, 30. Pipe. Detailed Implementation

[0026] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] like Figures 1-3 As shown, the pipe cutting fixing device of this application includes multiple pipe support frames 10 arranged in a row and a pipe clamping mechanism 20. Each pipe support frame 10 includes a frame body 11 and two support rods 14 arranged in an "X" shape to support the pipe 30, with the middle portions of the two support rods 14 hinged together. A roller 12 is rotatably connected to the top of each support rod 14 via a pivot, and a moving block 15 and a guide limiting wheel 16 are rotatably connected to the bottom of each support rod 14. A rotatable bidirectional screw 13 is mounted on the frame body 11, and the moving block 15 is threadedly connected to the bidirectional screw 13. A guide limiting groove 17 parallel to the axial direction of the bidirectional screw 13 is also provided on the frame body 11, and the guide limiting wheel 16 is located in the guide limiting groove 17 to ensure the stability of the movement trajectory of the moving block 15 and the support rods 14, while also improving the load-bearing capacity of the pipe support frame 10.

[0028] By setting two support rods 14 distributed in an "X" shape, and components such as rollers 12 and bidirectional screws 13 used in conjunction with the support rods 14, not only can the pipe 30 (radial) be effectively and stably supported, but the rotational torque of the pipe 30 can also be significantly reduced, friction and resistance can be reduced, and the practicality and flexibility of this application can be improved, making it suitable for pipes 30 with different diameters (such as 100mm to 600mm) within a certain range.

[0029] Preferably, the number of pipe support brackets 10 is set to 4 to 6. In actual use, the position (distance between two adjacent pipe support brackets 10) and / or the number of brackets 10 are adjusted according to the length of the pipe 30 to be cut and the number of cuts. This ensures stable support for the pipe 30 while reducing the operation time and number of times to adjust the distance between the rollers 12 when changing to pipes 30 of different diameters. At the same time, it also shows that the fixing device of this application is adaptable to pipes 30 of different lengths within a certain range.

[0030] Preferably, one end of the bidirectional screw 13 is fixedly equipped with an "L"-shaped handle 131, so that the bidirectional screw 13 can be driven to rotate by rotating the handle 131, which not only saves effort, but also has a low cost of use.

[0031] When using the pipe cutting fixing device of this application, the spacing between the two rollers 12 of multiple pipe support frames 10 is first adjusted according to the diameter of the pipe 30 to be cut. That is, the operator drives the bidirectional screw 13 to rotate by rotating the handle 131, which drives the two moving blocks 15 on both sides to move in opposite directions. The moving blocks 15 drive the bottom end of the support rod 14, so that the two support rods 14 distributed in an "X" shape retract or unfold, thereby realizing the adjustment of the roller spacing. During the adjustment process, the guide limit wheel 16 moves along the guide limit groove 17 to ensure the stability of the movement trajectory of the support rod 14. Then, the pipe 30 is loaded onto the pipe support frame 10. The multiple sets of rollers 12 not only provide effective support for the pipe 30 (radially) but also effectively reduce the rotational torque and surface scratch rate of the pipe 30. Then, the pipe clamping mechanism 20 effectively clamps and positions the pipe 30. At this time, the cutting equipment can cut the pipe 30.

[0032] The following are embodiments of this application.

[0033] Example 1

[0034] The pipe cutting fixing device in this embodiment has a basic structure that is basically the same as the pipe cutting fixing device of this application. The difference lies in the adjustable height of the frame 11 and the specific structure of the pipe clamping mechanism 20.

[0035] In this embodiment, based on a comprehensive consideration of cost and operational accuracy, such as Figure 4 As shown, the frame 11 is connected to a support frame base 18 by mounting bolts, and the support frame base 18 is equipped with a plurality of adjusting bolts 19 for adjusting the height of the support frame base 18; as Figure 5 As shown, the pipe clamping mechanism 20 includes a chuck box 21 and a height-adjustable chuck box base 22. The chuck box 21 includes a chuck 211 for clamping the pipe 30. A linear displacement component for driving the chuck box 21 to move horizontally towards or away from the pipe support frame 10 is provided between the chuck box 21 and the chuck box base 22.

[0036] In this embodiment, the pipe cutting fixing device is used by rotating the adjusting bolt 19, which drives the support frame base 18 on the adjusting bolt 19 to rise and fall, thereby adjusting the height of the frame 11 to meet the needs of different support heights. This also facilitates clamping with the chuck 211, ensuring the concentricity of the pipe 30 on the roller 12. That is, the height of the pipe support frame 10 is positively correlated with the diameter of the pipe 30. In actual use, quick adjustment can be achieved through pre-set scale markings, or the concentricity of the pipe 30 can be ensured by adjusting the height of the chuck box base 22. Furthermore, the linear displacement component facilitates axial positioning of the pipe 30 with high repeatability. Specifically, initially, the chuck box 21 is located away from the pipe support frame 10. After the pipe 30 is loaded onto the pipe support frame 10, the linear displacement component drives the chuck box 21 to move horizontally to a pre-set position (axial positioning). At this time, the chuck 211 actuates and clamps the pipe 30.

[0037] The chuck 211 includes a chuck body, movable jaws, and a jaw drive mechanism. It uses the radial movement of the movable jaws evenly distributed on the chuck body to clamp and position the pipe 30. This is a relatively mature existing technology and will not be described in detail here.

[0038] The chuck 211 described in this embodiment is a pneumatic chuck. Using a pneumatic chuck not only provides stable and adjustable clamping force, but also significantly improves production efficiency while reducing the labor intensity of workers.

[0039] Example 2

[0040] The pipe cutting fixing device in this embodiment is basically the same as that in embodiment 1, except for the specific structure of the linear displacement component.

[0041] like Figure 5 As shown, the linear displacement assembly in this embodiment includes a cylinder 23 and two slide rails 24 fixedly mounted on the chuck box base 22, and a slider 25 fixedly mounted on the chuck box 21 and slidingly engaged with the slide rails 24; the end of the telescopic rod of the cylinder 23 away from the cylinder body is connected to the chuck box 21. The cylinder 23 drives the chuck box 21 to move horizontally, while the slide rails 24 and slider 25 guide and limit the movement trajectory of the chuck box 21, thereby improving the stability of the movement of the chuck box 21.

[0042] This embodiment also features a more preferred design, in which the slider 25 surrounds the outer edge of the slide rail 24. Specifically, the slider 25 is a fully enclosed or semi-enclosed structure. This increases the contact area between the slider 25 and the slide rail 24, enhancing the chuck box 21's ability to resist lateral loads generated by cutting vibrations or external impacts, ensuring positioning accuracy, preventing chuck box 21 offset and cutting errors caused by lateral forces, while also suppressing high-frequency vibration transmission and significantly reducing vibration amplitude. This is particularly suitable for the stable processing of high-precision thin-walled tubes. Furthermore, this structure has excellent sealing and dustproof effects, effectively preventing cutting chips, dust, etc., from adhering to or clogging the slide rail 24 and slider 25.

[0043] In this application, all devices and components whose structures are not described are commercially available devices or components. Any parts not elaborated in detail in this specification are prior art.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fixing device for pipe cutting, characterized in that, The device includes multiple pipe support frames (10) arranged in a row and a pipe clamping mechanism (20). Each pipe support frame (10) includes a frame body (11) and two support rods (14) arranged in an "X" shape for supporting pipes (30). The two support rods (14) are hinged together at the middle. The top of each support rod (14) is rotatably connected to a roller (12) via a pivot. The bottom of each support rod (14) is rotatably connected to a moving block (15) and a guide limiting wheel (16). A rotatable bidirectional screw (13) is installed on the frame body (11). The moving block (15) is threadedly connected to the bidirectional screw (13). The frame body (11) is also provided with a guide limiting groove (17) parallel to the axial direction of the bidirectional screw (13). The guide limiting wheel (16) is located in the guide limiting groove (17).

2. The fixing device for pipe cutting according to claim 1, characterized in that, The number of the pipe support frame (10) is set to 4 to 6.

3. The pipe cutting fixture of claim 1, wherein: An "L"-shaped handle (131) is fixedly installed at one end of the bidirectional screw (13).

4. The pipe cutting fixture of claim 1, wherein: The height of the frame (11) is adjustable.

5. The pipe cutting fixture of claim 4, wherein: The frame (11) is detachably connected to a support frame base (18), and the support frame base (18) is equipped with a plurality of adjusting bolts (19) for adjusting the height of the support frame base (18).

6. The pipe cutting fixture of claim 1, wherein The pipe clamping mechanism (20) includes a chuck box (21) and a height-adjustable chuck box base (22). The chuck box (21) includes a chuck (211) for clamping the pipe (30). A linear displacement component is provided between the chuck box (21) and the chuck box base (22) for driving the chuck box (21) to move horizontally toward or away from the pipe support frame (10).

7. The pipe cutting fixture of claim 6, wherein: The chuck (211) is a manual chuck or a pneumatic chuck.

8. The pipe cutting fixture of claim 6, wherein: The linear displacement assembly includes a cylinder (23) and two slide rails (24) fixedly mounted on the chuck box base (22), and a slider (25) fixedly mounted on the chuck box (21) and slidingly engaged with the slide rails (24); the end of the telescopic rod of the cylinder (23) away from the cylinder body is connected to the chuck box (21).

9. The pipe cutting fixture of claim 8, wherein, The slider (25) surrounds the outer edge of the slide rail (24).

10. The pipe cutting fixture of claim 9, wherein, The slider (25) is a fully enclosed structure or a semi-enclosed structure.

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