Pipe shearing machine and shearing process

Abstract

This invention relates to pipe processing, and more specifically to a pipe shearing machine and shearing process, comprising a device support, with sliding supports I fixedly connected to both the left and right sides of the device support, each sliding support I slidably connected to a cutting mechanism, and two sliding supports II fixedly connected to the rear side of the device support, each sliding support II slidably connected to a clamping mechanism I, and two clamping mechanisms II fixedly connected to the device support, and a support mechanism fixedly connected to the device support; the process includes the following steps: Step 1: clamping the outer side of the pipe to be cut using the two clamping mechanisms I and the two clamping mechanisms II; Step 2: supporting both sides of the internal cutting position of the pipe using the support mechanism; Step 3: the two cutting mechanisms cut the pipe; This allows for internal support of the pipe during cutting, thereby preventing deformation of the pipe due to compression cutting.

Description

Technical Field

[0001] This invention relates to pipe processing, and more specifically to a pipe shearing machine and shearing process. Background Technology

[0002] Pipe shearing is a fundamental and crucial process in pipe processing, widely used in machinery manufacturing, construction engineering, fluid transportation, furniture, and sporting goods. Currently, common pipe shearing equipment mainly includes high-speed circular saws, band saws, and hydraulic / pneumatic shearing machines.

[0003] Hydraulic or pneumatic shearing machines are favored for their high efficiency, large impact force, and relatively simple structure. However, these traditional shearing machines have a long-standing technical defect that has not been effectively resolved during the cutting process: under the enormous radial pressure of the shearing blade, the cut of the pipe is prone to crushing plastic deformation.

[0004] Specifically, its working principle is as follows: During shearing, the movable upper die moves downwards, working together with the fixed lower die to apply a pair of shearing forces with opposite directions and close points of application to the pipe. This process is essentially a "compression-fracture" process. Because the pipe is a hollow, thin-walled component, its radial stiffness is much lower than its axial stiffness. When a huge shearing force is concentrated near the cut, the pipe wall, before being sheared, will first be unable to withstand the radial pressure and will dent, causing the circular cross-section to be flattened, forming an elliptical or approximately rectangular deformation, severely affecting subsequent use. Summary of the Invention

[0005] The purpose of this invention is to provide a pipe shearing machine and shearing process that can support the inside of the pipe during cutting, thereby preventing the pipe from deforming due to extrusion cutting.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] A pipe shearing machine includes a device support. Sliding brackets I are fixedly connected to both the left and right sides of the device support. A cutting mechanism is slidably connected to each of the two sliding brackets I. Two sliding brackets II are fixedly connected to the rear side of the device support. A clamping mechanism I is slidably connected to each of the two sliding brackets II. Two clamping mechanisms II are fixedly connected to the device support. A support mechanism is fixedly connected to the device support.

[0008] The clamping mechanism I includes a clamping bracket I, which is slidably connected to a sliding bracket II. A lead screw II is rotatably connected to the sliding bracket II. A power mechanism I for driving the lead screw II to rotate is fixedly connected to the sliding bracket II. A telescopic mechanism I is fixedly connected to the clamping bracket I. A support bracket I is fixedly connected to the telescopic end of the telescopic mechanism I. Two swing brackets I are rotatably connected to the support bracket I. A torsion spring I is fixedly connected between the swing bracket I and the support bracket I. A clamping roller I is rotatably connected to the swing bracket I. The two clamping rollers I are connected by a clamping belt I. A power mechanism II for driving the clamping rollers I to rotate is fixedly connected to the swing bracket I.

[0009] A telescopic mechanism II is fixedly connected to the clamping bracket I, and a clamping conical wheel is rotatably connected to the telescopic end of the telescopic mechanism II;

[0010] The clamping mechanism II includes a telescopic mechanism III, which is fixedly connected to the device bracket. A telescopic mechanism IV is fixedly connected to the telescopic end of the telescopic mechanism III. A support bracket II is fixedly connected to the telescopic end of the telescopic mechanism IV. Two swing brackets II are rotatably connected to the support bracket II. A torsion spring II is fixedly connected between the support bracket II and the swing bracket II. A clamping roller II is rotatably connected to the swing bracket II. A clamping belt II is driven between the two clamping rollers II. A power mechanism III for driving the clamping roller II to rotate is fixedly connected to the swing bracket II.

[0011] The cutting mechanism includes a cutting seat, which is slidably connected to a sliding bracket I. A lead screw I is rotatably connected to the sliding bracket I. A power mechanism IV for driving the lead screw I to rotate is fixedly connected to the sliding bracket I. The cutting seat is threadedly connected to the lead screw I. A telescopic mechanism V is fixedly connected to the cutting seat. A cutting motor is fixedly connected to the telescopic end of the telescopic mechanism V. A cutting tool is fixedly connected to the output shaft of the cutting motor.

[0012] The support mechanism includes a telescopic mechanism VI, which is fixedly connected to the device bracket. A movable bracket is fixedly connected to the telescopic end of the telescopic mechanism VI. A rotating cylinder I is rotatably connected to the movable bracket. A power mechanism V for driving the rotating cylinder I to rotate is fixedly connected to the movable bracket.

[0013] The movable support is fixedly connected to a telescopic mechanism VII, a support plate is fixedly connected to the telescopic end of the telescopic mechanism VII, a rotating sleeve is rotatably connected to the support plate, a power mechanism VI for driving the rotating sleeve to rotate is fixedly connected to the support plate, the rotating sleeve passes through the rotating cylinder I, and the end of the rotating sleeve is fixedly connected to the rotating cylinder II.

[0014] Multiple telescopic mechanisms VIII are fixedly connected to both rotating cylinder I and rotating cylinder II. A gap cavity is fixedly connected to the telescopic end of each telescopic mechanism VIII, and a rotating column is rotatably connected to the gap cavity.

[0015] A pipe shearing process, the process comprising the following steps:

[0016] Step 1: Clamp the outer side of the cut pipe using two clamping mechanisms I and two clamping mechanisms II;

[0017] Step 2: Support both sides of the internal cutting position of the pipe using a support mechanism;

[0018] Step 3: Two cutting mechanisms cut the pipe. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0020] Figure 1 This is a schematic diagram of the pipe shearing machine tool structure of the present invention;

[0021] Figure 2 This is a side view of the pipe shearing machine of the present invention;

[0022] Figure 3 This is a schematic diagram of the device support structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the clamping mechanism I of the present invention;

[0024] Figure 5 This is a schematic diagram of the clamping mechanism I of the present invention;

[0025] Figure 6 This is a schematic diagram of the clamping mechanism II of the present invention;

[0026] Figure 7 This is a schematic diagram of the clamping mechanism II of the present invention;

[0027] Figure 8 This is a schematic diagram of the cutting mechanism structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the support mechanism structure of the present invention;

[0029] Figure 10 This is a schematic diagram of the support mechanism structure of the present invention.

[0030] In the diagram: Device support 1; Sliding support I 11; Lead screw I 12; Sliding support II 13; Lead screw II 14; Clamping mechanism I 2; Clamping support I 21; Telescopic mechanism I 22; Support support I 23; Swinging support I 24; Clamping roller I 25; Clamping belt I 26; Telescopic mechanism II 27; Clamping conical wheel 28; Clamping mechanism II 3; Telescopic mechanism III 31; Telescopic mechanism IV 32; Support support II 33; Swinging support II 34; Clamping roller II 35; Clamping belt II 36; Cutting mechanism 4; Cutting seat 41; Telescopic mechanism V 42; Cutting motor 43; Cutting tool 44; Support mechanism 5; Telescopic mechanism VI 51; Moving support 52; Rotating cylinder I 53; Telescopic mechanism VII 54; Support plate 55; Rotating sleeve 56; Rotating cylinder II 57; Telescopic mechanism VIII 58; Gap cavity 59; Rotating column 510. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings.

[0032] like Figures 1 to 10 As shown below, the structure and function of a pipe shearing machine are described in detail.

[0033] A pipe shearing machine includes a device support 1. Sliding supports I11 are fixedly connected to both the left and right sides of the device support 1. Cutting mechanisms 4 are slidably connected to both sliding supports I11. Two sliding supports II13 are fixedly connected to the rear side of the device support 1. Clamping mechanisms I2 are slidably connected to both sliding supports II13. Two clamping mechanisms II3 are fixedly connected to the device support 1. A support mechanism 5 is fixedly connected to the device support 1.

[0034] When using, such as Figure 1 As shown, the outer side of the pipe is clamped by two clamping mechanisms I2 and two clamping mechanisms II3. The clamping method is as follows: the two clamping mechanisms I2 clamp the left and right sides of the pipe, the two clamping mechanisms II3 clamp the top and bottom sides of the pipe, and the support mechanism 5 supports the two sides of the pipe at the cutting position to prevent the pipe from deforming due to pressure during the cutting process. After the support mechanism 5 supports the inside of the pipe, the two cutting mechanisms 4 cut the pipe at the designated position.

[0035] like Figure 4 and Figure 5 As shown below, the structure and function of clamping mechanism I2 will be described in detail.

[0036] The clamping mechanism I2 includes a clamping bracket I21, which is slidably connected to a sliding bracket II13. A lead screw II14 is rotatably connected to the sliding bracket II13. A power mechanism I for driving the lead screw II14 to rotate is fixedly connected to the sliding bracket II13. A telescopic mechanism I22 is fixedly connected to the clamping bracket I21. A support bracket I23 is fixedly connected to the telescopic end of the telescopic mechanism I22. Two swing brackets I24 are rotatably connected to the support bracket I23. A torsion spring I is fixedly connected between the swing brackets I24 and the support bracket I23. A clamping roller I25 is rotatably connected to the swing brackets I24. The two clamping rollers I25 are connected by a clamping belt I26. A power mechanism II for driving the clamping rollers I25 to rotate is fixedly connected to the swing brackets I24.

[0037] The clamping bracket I21 is fixedly connected to a telescopic mechanism II27, and a clamping conical wheel 28 is rotatably connected to the telescopic end of the telescopic mechanism II27.

[0038] In use, the pipe is passed between the two clamping mechanisms I2, and the telescopic mechanism I22 is activated. The telescopic mechanism I22 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism I22 drives the support bracket I23 to move. The support bracket I23 drives the two swing brackets I24 to move. The swing brackets I24 drive the two clamping rollers I25 to move, so that the two clamping rollers I25 drive the clamping belt I26 to move, so that the clamping belt I26 contacts the side of the pipe, thereby clamping the side of the pipe.

[0039] Furthermore, while the clamping band I26 is in contact with the pipe, the reaction force of the pipe causes the clamping band I26 to deform, which in turn causes the two swing brackets I24 to swing, so that the clamping band I26 covers the outside of the pipe and completes the clamping. At the same time, because the clamping band I26 has a certain deformation capacity, it can clamp pipes of different diameters.

[0040] Furthermore, the power mechanism I is started, preferably a servo motor. The output shaft of the power mechanism I starts to rotate, and the output shaft of the power mechanism I drives the lead screw II14 to rotate. When the lead screw II14 rotates, it drives the clamping bracket I21 to move through the thread, so that the clamping bracket I21 slides on the sliding bracket II13, thereby adjusting the clamping position of the clamping mechanism I2.

[0041] Furthermore, the telescopic mechanism II 27 is activated. The telescopic mechanism II 27 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism II 27 drives the clamping conical wheel 28 to move, so that the clamping conical wheel 28 contacts the side of the pipe, thereby performing auxiliary positioning on the side of the pipe.

[0042] Furthermore, with the clamping belt I26 covering the pipe, the power mechanism II is activated. The power mechanism II is preferably a servo motor. The output shaft of the power mechanism II drives the clamping roller I25 to rotate. When the clamping roller I25 rotates, it drives the clamping belt I26 to move. The clamping belt I26 drives the pipe to rotate, thus completing the circumferential cutting of the pipe.

[0043] The structure and function of clamping mechanism II3 are described in detail below;

[0044] The clamping mechanism II3 includes a telescopic mechanism III31, which is fixedly connected to the device bracket 1. A telescopic mechanism IV32 is fixedly connected to the telescopic end of the telescopic mechanism III31. A support bracket II33 is fixedly connected to the telescopic end of the telescopic mechanism IV32. Two swing brackets II34 are rotatably connected to the support bracket II33. A torsion spring II is fixedly connected between the support bracket II33 and the swing bracket II34. A clamping roller II35 is rotatably connected to the swing bracket II34. A clamping belt II36 is driven between the two clamping rollers II35. A power mechanism III for driving the clamping rollers II35 to rotate is fixedly connected to the swing bracket II34.

[0045] like Figure 6 and Figure 7 As shown, during use, the telescopic mechanism Ⅲ31 and telescopic mechanism Ⅳ32 are activated. The telescopic mechanism Ⅲ31 and telescopic mechanism Ⅳ32 can be hydraulic cylinders or electric push rods. The telescopic end of the telescopic mechanism Ⅲ31 drives the telescopic mechanism Ⅳ32 to move. The telescopic end of the telescopic mechanism Ⅳ32 drives the support bracket Ⅱ33 to move, so that the support bracket Ⅱ33 moves closer to the pipe, so that the clamping band Ⅱ36 covers the pipe and completes the clamping.

[0046] Furthermore, while the clamping band II36 is in contact with the pipe, the reaction force of the pipe causes the clamping band II36 to deform, which in turn causes the two swing brackets II34 to swing, so that the clamping band II36 covers the outside of the pipe and completes the clamping. At the same time, because the clamping band II36 has a certain deformation capacity, it can clamp pipes of different diameters.

[0047] Furthermore, the power mechanism III is activated. The power mechanism III is preferably a servo motor. The output shaft of the power mechanism III drives the clamping roller II 35 to rotate. When the clamping roller II 35 rotates, it drives the clamping belt II 36 to move. The clamping belt II 36 drives the pipe to rotate, thus completing the circumferential cutting of the pipe.

[0048] The structure and function of the cutting mechanism 4 and the support mechanism 5 are described in detail below;

[0049] The cutting mechanism 4 includes a cutting seat 41, which is slidably connected to a sliding bracket I11. A lead screw I12 is rotatably connected to the sliding bracket I11. A power mechanism IV for driving the lead screw I12 to rotate is fixedly connected to the sliding bracket I11. The cutting seat 41 is threadedly connected to the lead screw I12. A telescopic mechanism V42 is fixedly connected to the cutting seat 41. A cutting motor 43 is fixedly connected to the telescopic end of the telescopic mechanism V42. A cutting tool 44 is fixedly connected to the output shaft of the cutting motor 43.

[0050] The support mechanism 5 includes a telescopic mechanism VI 51, which is fixedly connected to the device bracket 1. A movable bracket 52 is fixedly connected to the telescopic end of the telescopic mechanism VI 51. A rotating cylinder I 53 is rotatably connected to the movable bracket 52. A power mechanism V for driving the rotating cylinder I 53 to rotate is fixedly connected to the movable bracket 52.

[0051] The movable support 52 is fixedly connected to a telescopic mechanism VII 54. A support plate 55 is fixedly connected to the telescopic end of the telescopic mechanism VII 54. A rotating sleeve 56 is rotatably connected to the support plate 55. A power mechanism VI for driving the rotating sleeve 56 to rotate is fixedly connected to the support plate 55. The rotating sleeve 56 passes through the rotating cylinder I 53. A rotating cylinder II 57 is fixedly connected to the end of the rotating sleeve 56.

[0052] Multiple telescopic mechanisms VIII 58 are fixedly connected to both rotating cylinder I 53 and rotating cylinder II 57. A gap cavity 59 is fixedly connected to the telescopic end of each telescopic mechanism VIII 58, and a rotating column 510 is rotatably connected to the gap cavity 59.

[0053] In use, the telescopic mechanism VI51 is activated. The telescopic mechanism VI51 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism VI51 drives the rotating cylinder I53 and the rotating cylinder II57 to extend into the inside of the pipe. The telescopic mechanism VIII58 is activated. The telescopic mechanism VIII58 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism VIII58 drives the gap cavity 59 to move. The gap cavity 59 drives the rotating column 510 to move, so that the rotating column 510 contacts the inside of the pipe, thereby completing the support inside the pipe.

[0054] Furthermore, power mechanisms V and VI are activated. Power mechanisms V and VI are preferably servo motors. The output shaft of power mechanism V drives rotating cylinder I 53 to rotate, and the output shaft of power mechanism VI drives rotating cylinder II 57 to rotate, so that rotating column 510 rotates around the inside of the pipe to achieve full support and ensure that the pipe does not deform during the cutting process.

[0055] Furthermore, the telescopic mechanism VII54 is activated. The telescopic mechanism VII54 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism VII54 drives the rotating sleeve 56 to move. The rotating sleeve 56 drives the rotating cylinder II 57 to move, thereby adjusting the relative distance between the rotating cylinder II 57 and the rotating cylinder I 53.

[0056] Furthermore, multiple rotating columns 510 are used to support both sides of the cutting position. The cutting motor 43 is started, and the output shaft of the cutting motor 43 drives the cutting tool 44 to rotate. The power mechanism IV is started, and the output shaft of the power mechanism IV drives the lead screw I 12 to rotate. When the lead screw I 12 rotates, it drives the cutting seat 41 to move laterally through the thread. The cutting seat 41 drives the telescopic mechanism V 42, the cutting motor 43 and the cutting tool 44 to move laterally, so that the cutting tool 44 cuts the pipe.

[0057] Furthermore, during the pipe cutting process, clamping belts I26 and II36 are used to drive the pipe to rotate, thereby completing the full cutting of the pipe;

[0058] Furthermore, the telescopic mechanism V42 is activated. The telescopic mechanism V42 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism V42 drives the cutting tool 44 to move, thereby adjusting the cutting position of the cutting tool 44.

[0059] A pipe shearing process, the process comprising the following steps:

[0060] Step 1: Clamp the outer side of the pipe being cut using two clamping mechanisms I2 and two clamping mechanisms II3; activate telescopic mechanism I22 (which can be a hydraulic cylinder or an electric push rod). The telescopic end of telescopic mechanism I22 drives the support bracket I23 to move, which in turn drives two swing brackets I24 to move. The swing brackets I24 then drive two clamping rollers I25 to move, causing the clamping rollers I25 to move the clamping band I26, bringing it into contact with the side of the pipe and clamping it; activate telescopic mechanisms III31 and IV32 (which can be hydraulic cylinders or electric push rods). The telescopic end of telescopic mechanism III31 drives telescopic mechanism IV32 to move, which in turn drives the support bracket II33 to move closer to the pipe, allowing the clamping band II36 to wrap around the pipe and complete the clamping process.

[0061] Step 2: Support both sides of the internal cutting position of the pipe through the support mechanism 5; activate the telescopic mechanism VI 51, which can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism VI 51 drives the rotating cylinder I 53 and the rotating cylinder II 57 to extend into the inside of the pipe. Activate the telescopic mechanism VIII 58, which can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism VIII 58 drives the gap cavity 59 to move. The gap cavity 59 drives the rotating column 510 to move, so that the rotating column 510 contacts the inside of the pipe, thereby completing the support inside the pipe.

[0062] Step 3: Two cutting mechanisms 4 cut the pipe; multiple rotating columns 510 support both sides of the cutting position, start the cutting motor 43, the output shaft of the cutting motor 43 drives the cutting tool 44 to rotate, start the power mechanism IV, the output shaft of the power mechanism IV drives the lead screw I 12 to rotate, when the lead screw I 12 rotates, it drives the cutting seat 41 to move laterally through the thread, the cutting seat 41 drives the telescopic mechanism V 42, the cutting motor 43 and the cutting tool 44 to move laterally, so that the cutting tool 44 cuts the pipe.

Claims

1. A pipe shearing machine tool, comprising a device support (1), characterized in that: The device support (1) is fixedly connected to sliding bracket I (11) on both the left and right sides. Cutting mechanism (4) is slidably connected to each of the two sliding brackets I (11). Two sliding brackets II (13) are fixedly connected to the rear side of the device support (1). Clamping mechanism I (2) is slidably connected to each of the two sliding brackets II (13). Two clamping mechanisms II (3) are fixedly connected to the device support (1). Supporting mechanism (5) is fixedly connected to the device support (1).

2. The pipe shearing machine tool according to claim 1, characterized in that: The clamping mechanism I (2) includes a clamping bracket I (21), which is slidably connected to a sliding bracket II (13). A lead screw II (14) is rotatably connected to the sliding bracket II (13). A power mechanism I for driving the lead screw II (14) to rotate is fixedly connected to the sliding bracket II (13). A telescopic mechanism I (22) is fixedly connected to the clamping bracket I (21). A support bracket I (23) is fixedly connected to the telescopic end of the telescopic mechanism I (22). Two swing brackets I (24) are rotatably connected to the support bracket I (23). A torsion spring I is fixedly connected between the swing bracket I (24) and the support bracket I (23). A clamping roller I (25) is rotatably connected to the swing bracket I (24). The two clamping rollers I (25) are connected by a clamping belt I (26). A power mechanism II for driving the clamping roller I (25) to rotate is fixedly connected to the swing bracket I (24).

3. The pipe shearing machine tool according to claim 2, characterized in that: The clamping bracket I (21) is fixedly connected to the telescopic mechanism II (27), and the telescopic end of the telescopic mechanism II (27) is rotatably connected to the clamping conical wheel (28).

4. The pipe shearing machine tool according to claim 1, characterized in that: The clamping mechanism II (3) includes a telescopic mechanism III (31), which is fixedly connected to the device bracket (1). A telescopic mechanism IV (32) is fixedly connected to the telescopic end of the telescopic mechanism III (31). A support bracket II (33) is fixedly connected to the telescopic end of the telescopic mechanism IV (32). Two swing brackets II (34) are rotatably connected to the support bracket II (33). A torsion spring II is fixedly connected between the support bracket II (33) and the swing bracket II (34). A clamping roller II (35) is rotatably connected to the swing bracket II (34). A clamping belt II (36) is connected between the two clamping rollers II (35). A power mechanism III for driving the clamping roller II (35) to rotate is fixedly connected to the swing bracket II (34).

5. A pipe shearing machine tool according to claim 1, characterized in that: The cutting mechanism (4) includes a cutting seat (41), which is slidably connected to a sliding bracket I (11). A lead screw I (12) is rotatably connected to the sliding bracket I (11). A power mechanism IV for driving the lead screw I (12) to rotate is fixedly connected to the sliding bracket I (11). The cutting seat (41) is threadedly connected to the lead screw I (12). A telescopic mechanism V (42) is fixedly connected to the cutting seat (41). A cutting motor (43) is fixedly connected to the telescopic end of the telescopic mechanism V (42). A cutting tool (44) is fixedly connected to the output shaft of the cutting motor (43).

6. A pipe shearing machine tool according to claim 1, characterized in that: The support mechanism (5) includes a telescopic mechanism VI (51), which is fixedly connected to the device bracket (1). A movable bracket (52) is fixedly connected to the telescopic end of the telescopic mechanism VI (51). A rotating cylinder I (53) is rotatably connected to the movable bracket (52). A power mechanism V for driving the rotating cylinder I (53) to rotate is fixedly connected to the movable bracket (52).

7. A pipe shearing machine tool according to claim 6, characterized in that: The movable support (52) is fixedly connected to a telescopic mechanism VII (54), and a support plate (55) is fixedly connected to the telescopic end of the telescopic mechanism VII (54). A rotating sleeve (56) is rotatably connected to the support plate (55), and a power mechanism VI for driving the rotating sleeve (56) to rotate is fixedly connected to the support plate (55). The rotating sleeve (56) passes through the rotating cylinder I (53), and the end of the rotating sleeve (56) is fixedly connected to the rotating cylinder II (57).

8. A pipe shearing machine tool according to claim 7, characterized in that: Multiple telescopic mechanisms VIII (58) are fixedly connected to both rotating cylinder I (53) and rotating cylinder II (57).

9. A pipe shearing machine tool according to claim 8, characterized in that: The telescopic mechanism VIII (58) has a gap cavity (59) fixedly connected to its telescopic end, and a rotating column (510) is rotatably connected to the gap cavity (59).

10. A pipe shearing process, characterized in that: The process includes the following steps: Step 1: The outer side of the cut pipe is clamped by two clamping mechanisms I (2) and two clamping mechanisms II (3); Step 2: Support both sides of the internal cutting position of the pipe through the support mechanism (5); Step 3: Two cutting mechanisms (4) cut the pipe.

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