A cutting device for pipes

Abstract

The application discloses a pipeline cutting device in the technical field of pipeline cutting, which comprises a workbench and two sets of clamping components, the clamping unit comprises a main body component in a ring structure, left and right clamping components rotatably arranged on the two sides of the main body component, and a plurality of clamping frames uniformly distributed in the main body component. The device can simultaneously satisfy the clamping and limiting of pipelines with different shapes and specifications through the clamping unit. The left and right clamping components arranged on the two sides of the clamping component are synchronously driven by the same driving source, the right-angled circular pipe and the right-angled square pipe are effectively limited and clamped in multiple directions and multiple positions in the vertical and horizontal directions, the left and right clamping components can automatically adjust their clamping ranges according to actual use requirements, two sets of clamping ranges with different sizes can be formed in the vertical and horizontal directions, and thus the clamping and limiting of the elliptical pipe and the rectangular pipe can be satisfied.

Description

Technical Field

[0001] This invention relates to the field of pipe cutting technology, and more particularly to a pipe cutting device. Background Technology

[0002] Pipes can be classified into various types based on their cross-sectional shape, including round pipes, rectangular pipes, and oddly shaped pipes. Round and rectangular pipes are the most widely used in real-world applications. Round pipes include perfectly round pipes with a circular cross-section and elliptical pipes with an elliptical cross-section, while rectangular pipes include square pipes with a square cross-section and rectangular pipes with a rectangular cross-section. In practical applications, pipes often require cutting to meet specific needs. To improve stability during cutting, clamps and fixtures are typically installed on the cutting device to clamp and limit the pipe's position, preventing displacement during the cutting process.

[0003] The existing clamping fixtures installed on cutting devices work by applying limiting clamping forces simultaneously from multiple directions. This clamping method is effective for round and square tubes, providing multi-directional and multi-point clamping and ensuring clamping stability. However, when clamping elliptical and rectangular tubes, which have significantly different lengths and widths, existing clamping fixtures that can simultaneously clamp from multiple directions often result in the clamping blocks on the fixture corresponding to the protruding surface of the elliptical or rectangular tube contacting and clamping the tube first. The clamping blocks in other directions, already in contact with the protruding surface, cannot continue to effectively contact the elliptical or rectangular tube, nor can they perform effective clamping and limiting operations. Consequently, the elliptical or rectangular tube cannot be adequately clamped and limited, leading to poor pipe stability and failing to meet the requirements for effective clamping and limiting of elliptical and rectangular tubes. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned pipe cutting devices, the present invention proposes a pipe cutting device to solve such problems.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a pipe cutting device, comprising a worktable and two sets of clamping units, wherein the clamping unit comprises a main body component with an annular structure, a left clamping component and a right clamping component respectively rotatably disposed on both sides of the main body component, and multiple sets of clamping frames evenly distributed within the main body component;

[0006] The main component includes a ring-shaped mounting frame, with the left clamping component and the right clamping component located on both sides of the mounting frame, and two sets of limiting grooves distributed on both sides of the mounting frame. Each set of mounting frames is inserted with a set of clamping frames, a screw rod set on the side of the mounting frame, a slide table threaded onto the screw rod, and a push frame mounted on the slide table. The center position of the push frame is rotatably connected to the slide table.

[0007] The left clamping component includes a left drive ring located on the side of the main component, a push groove 1 symmetrically arranged in the horizontal direction on the left drive ring, and one side of the clamping frame extending into the push groove 1, and a left push rod rotatably connected to one side of the left drive ring, with the outer end of the left push rod rotatably connected to one end of the push frame.

[0008] The right clamping component includes a right drive ring located on the other side of the main component, a push groove 2 symmetrically arranged vertically on the right drive ring, and one side of the clamping frame extending into the push groove 2, as well as a right push rod rotatably connected to one side of the right drive ring, with the outer end of the right push rod rotatably connected to the other end of the push frame.

[0009] As a preferred embodiment of the pipe cutting device of the present invention, the limiting groove has a convex-shaped cross section, and the limiting groove near the left clamping component has its convex-shaped top end extending towards the left clamping component, while the limiting groove near the right clamping component has its convex-shaped top end extending towards the right clamping component.

[0010] As a preferred embodiment of the pipe cutting device of the present invention, the main component further includes a limiting frame symmetrically arranged on both sides of the mounting frame, a mounting groove located between the mounting frame and the limiting frame, and the left drive ring and the right drive ring respectively located in the mounting groove on both sides of the mounting frame.

[0011] As a preferred embodiment of the pipe cutting device of the present invention, the mounting bracket has two sets of extension brackets extending outward from its side, and the screw is located between the two sets of extension brackets, while the outer end of the screw is provided with a bevel gear.

[0012] As a preferred embodiment of the pipe cutting device of the present invention, the left clamping component further includes a pressure plate located outside the left drive ring, a collar disposed between the pressure plate and the left drive ring, and a left connecting lug disposed on the side of the left drive ring, and one end of the left push rod is rotatably connected to the left connecting lug.

[0013] As a preferred embodiment of the pipe cutting device of the present invention, the right clamping component further includes a pressure plate two located outside the right drive ring, a collar two disposed between the pressure plate two and the right drive ring, and a right connecting lug disposed on the side of the right drive ring, and one end of the right push rod is rotatably connected to the right connecting lug.

[0014] As a preferred embodiment of the pipe cutting device of the present invention, the clamping frame includes an insert block inserted into a limiting groove, an extension shaft laterally disposed on the outside of the insert block, and a clamping plate laterally disposed on the inner end of the insert block.

[0015] In a preferred embodiment of the pipe cutting device of the present invention, the extension shaft extends outward through the limiting groove and is simultaneously inserted into the clamping frame in the limiting groove near the left clamping component, and its corresponding extension shaft extends into the first pushing groove. The clamping frame inserted into the limiting groove near the right clamping component has its corresponding extension shaft extending into the second pushing groove.

[0016] As a preferred embodiment of the pipe cutting device of the present invention, a gasket made of rubber material is attached to the inner side of the clamping plate, and the inner outer wall of the gasket is provided with a mesh structure to increase friction.

[0017] In a preferred embodiment of the pipe cutting device of the present invention, a cutting component is provided on the worktable and is located between two sets of clamping units. A drive rod is also provided on the worktable and is connected to the side of the two sets of clamping units. A bevel gear is provided on the drive rod at the position where it contacts the clamping unit.

[0018] The beneficial effects of this invention are as follows: By setting up a clamping unit, the device can simultaneously perform clamping and limiting work on pipes of different shapes and specifications. The left and right clamping components on both sides of the clamping unit are synchronously driven by the same driving source, thereby achieving synchronous application of inward clamping limiting force in both vertical and horizontal directions. This enables simultaneous multi-directional and multi-point effective limiting clamping of round and square pipes. At the same time, the left and right clamping components can also adaptively and automatically adjust their respective clamping ranges according to actual usage requirements, thereby forming two sets of clamping ranges of different sizes in the vertical and horizontal directions, thus meeting the needs of clamping and limiting elliptical and rectangular pipes. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0020] Figure 1 This is a schematic diagram of the overall structure of the pipe cutting device of the present invention.

[0021] Figure 2 The pipe cutting device of the present invention Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0022] Figure 3 This is a schematic diagram of the structure of the clamping unit of the pipe cutting device of the present invention.

[0023] Figure 4 This is an exploded view of the structure of the clamping unit of the pipe cutting device of the present invention.

[0024] Figure 5 This is a schematic diagram of the workbench of the pipe cutting device of the present invention.

[0025] Figure 6 This is a partial structural diagram of the workbench of the pipe cutting device of the present invention.

[0026] Figure 7 This is a schematic diagram of the left clamping component of the pipe cutting device of the present invention.

[0027] Figure 8 This is a schematic diagram of the right clamping component of the pipe cutting device of the present invention.

[0028] Figure 9 This is a left view of the clamping unit of the pipe cutting device of the present invention.

[0029] Figure 10 This is a right view of the clamping unit of the pipe cutting device of the present invention.

[0030] Figure 11 This is a schematic diagram of the clamping unit of the pipe cutting device of the present invention clamping a round or square pipe.

[0031] Figure 12 This is a schematic diagram of the clamping unit of the pipe cutting device of the present invention clamping an elliptical or rectangular pipe.

[0032] Reference numerals: 1. Worktable; 11. Cutting component; 12. Drive rod; 121. Bevel gear one; 2. Clamping unit; 21. Main component; 211. Mounting bracket; 212. Limiting bracket; 213. Mounting slot; 214. Limiting slot; 215. Extension bracket; 216. Screw; 217. Slide table; 218. Pushing bracket; 219. Bevel gear two; 22. Left clamping component; 221. Left drive ring; 222. Pushing slot one; 223. Pressure plate one; 224. Collar one; 225. Left push rod; 226. Left connecting ear; 23. Right clamping component; 231. Right drive ring; 232. Push groove two; 233. Pressure plate two; 234. Collar two; 235. Right push rod; 236. Right connecting ear; 24. Clamping frame; 241. Insert block; 242. Extension shaft; 243. Clamping plate; 3. Round tube; 4. Square tube; 5. Elliptical tube; 6. Rectangular tube. Detailed Implementation

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0035] Reference Figures 1-12 This invention includes a pipe cutting device, comprising a workbench 1 and two sets of clamping units 2. Each clamping unit 2 includes a main body 21 with an annular structure, a left clamping component 22 and a right clamping component 23 rotatably disposed on both sides of the main body 21, and multiple sets of clamping frames 24 evenly distributed within the main body 21. By setting up two sets of clamping units 2, the pipe is clamped and limited to prevent it from moving during the pipe cutting process, thus ensuring the smooth progress of the cutting work. There are four sets of clamping frames 24, which can apply clamping force inward from four directions in cooperation with the left clamping component 22 and the right clamping component 23.

[0036] Reference Figure 5 and Figure 6 The main component 21 includes a ring-shaped mounting bracket 211, with a left clamping component 22 and a right clamping component 23 located on opposite sides of the mounting bracket 211. Limiting grooves 214 are distributed in pairs on both sides of the mounting bracket 211, and each set of mounting brackets 211 contains a clamping frame 24. A screw 216 is located on the side of the mounting bracket 211, a slide 217 is threaded onto the screw 216, and a pusher 218 is mounted on the slide 217. The center of the pusher 218 is rotatably connected to the slide 217. The main body of the main component 21 is fixedly connected to the worktable 1 and remains stationary during operation, while also being close to the left clamping component. The limiting groove 214 on one side of 22 is symmetrically arranged horizontally on the mounting frame 211, and the limiting groove 214 on the side near the right clamping component 23 is symmetrically arranged vertically on the mounting frame 211. The limiting grooves 214 in pairs arrange the four clamping frames 24 in a symmetrical manner on the main component 21, which facilitates the subsequent application of clamping force from the four directions of up, down, left and right of the four clamping frames 24. The screw 216 is rotatably connected to the side of the mounting frame 211. When the screw 216 rotates, it can drive the slide table 217 through the thread to drive the push frame 218 to slide horizontally on the side of the mounting frame 211, and the push frame 218 can swing around the slide table 217 as the axis.

[0037] Reference Figure 7The left clamping component 22 includes a left drive ring 221 located on the side of the main component 21, a push groove 222 symmetrically arranged in the horizontal direction on the left drive ring 221, and one side of the clamping frame 24 extending into the push groove 222, and a left push rod 225 rotatably connected to one side of the left drive ring 221, and the outer end of the left push rod 225 rotatably connected to one end of the push frame 218. The push groove 222 has an inclined structure, and the two ends of the inclined structure are close to the inner diameter and outer diameter of the left clamping component 22, respectively.

[0038] During use, the left clamping component 22 is rotatably connected to the side of the mounting bracket 211, and the left clamping component 22 is connected to the pusher bracket 218 via the left push rod 225. Therefore, the pusher bracket 218 can push the left clamping component 22 to rotate on the side of the main component 21 via the left push rod 225, and can rotate on the side of the mounting bracket 211. The rotating left drive ring 221 can push the clamping bracket 24 to move via the push groove 222. The clamping bracket 24, pushed by the push groove 222, can move under the guidance of the inclined structure of the push groove 222. Position adjustment is performed at or near the inner diameter or outer diameter of the left clamping component 22. Since the clamping frame 24 is inserted into the limiting groove 214, the pushing groove 222 can push the clamping frame 24 to move horizontally through its inclined structure. In addition, the two sets of pushing grooves 222 on the mounting frame 211 are symmetrically distributed. Therefore, the two sets of pushing grooves 222 will push their respective corresponding clamping frames 24 to move relative to each other in the horizontal direction, thereby realizing the function of pushing the two sets of symmetrical clamping frames 24 to apply clamping and limiting force in the horizontal direction.

[0039] Reference Figure 8 The right clamping component 23 includes a right drive ring 231 located on the other side of the main component 21, a push groove 232 symmetrically arranged vertically on the right drive ring 231, and one side of the clamping frame 24 extending into the push groove 232, and a right push rod 235 rotatably connected to one side of the right drive ring 231, and the outer end of the right push rod 235 rotatably connected to the other end of the push frame 218. The push groove 232 has an inclined structure, and the two ends of the inclined structure are close to the inner diameter and outer diameter of the right clamping component 23, respectively.

[0040] During use, the right clamping component 23 and the left clamping component 22 have the same structure and working principle. The difference is that the left clamping component 22 and the right clamping component 23 are symmetrically arranged on both sides of the main body component 21. Therefore, when the right clamping component 23 is pushed by the push frame 218 through the right push rod 235, its rotation direction is opposite to that of the left clamping component 22. The right clamping component 23, which rotates in the opposite direction, can also push its corresponding clamping frame 24 to move through the push groove 232. At the same time, since the two sets of push grooves 232 on the right clamping component 23 are symmetrically arranged in the vertical direction, the two sets of push grooves 232 will push their respective clamping frames 24 to move relative to each other in the vertical direction, thereby realizing the function of pushing the two sets of symmetrical clamping frames 24 to apply clamping and limiting force in the vertical direction.

[0041] Furthermore, refer to Figure 5 The limiting groove 214 has a convex shape in cross section. The top of the convex shape of the limiting groove 214 near the left clamping component 22 extends towards the left clamping component 22, while the top of the convex shape of the limiting groove 214 near the right clamping component 23 extends towards the right clamping component 23. The limiting grooves 214 on both sides of the mounting bracket 211 are structurally set in the directions of the left clamping component 22 and the right clamping component 23, which facilitates the connection between the corresponding clamping bracket 24 and the left clamping component 22 and the right clamping component 23.

[0042] Furthermore, refer to Figure 5 The main component 21 also includes limiting frames 212 symmetrically arranged on both sides of the mounting frame 211, and mounting grooves 213 located between the mounting frame 211 and the limiting frames 212. The left drive ring 221 and the right drive ring 231 are respectively located in the mounting grooves 213 on both sides of the mounting frame 211. The limiting frames 212 are fixedly connected to the mounting frame 211. The limiting frames 212 can apply a limiting force to the left clamping component 22 or the right clamping component 23 from the horizontal direction, thereby ensuring that the left clamping component 22 and the right clamping component 23 will not detach from the main component 21.

[0043] Among them, reference Figure 6The mounting bracket 211 has two sets of extension brackets 215 extending outward from its side, and the screw 216 is located between the two sets of extension brackets 215. At the same time, the outer end of the screw 216 is provided with a bevel gear 219. There is space between the two sets of extension brackets 215. The slide 217, which is threadedly connected to the screw 216, is located between the two sets of extension brackets 215. Therefore, the extension brackets 215, the screw 216 and the slide 217 can be combined to form a screw-slide structure. This allows the screw 216 to be rotated, which drives the slide 217 to drive the pusher 218 to slide on the side of the main component 21. This enables the pusher 218 to push the left clamping component 22 and the right clamping component 23 to work.

[0044] Furthermore, refer to Figure 7 The left clamping component 22 also includes a pressure plate 223 located outside the left drive ring 221, a collar 224 disposed between the pressure plate 223 and the left drive ring 221, and a left connecting ear 226 disposed on the side of the left drive ring 221. One end of the left push rod 225 is rotatably connected to the left connecting ear 226. The left clamping component 22 is rotatably connected to the side of the main component 21 through the pressure plate 223 and the collar 224. At the same time, the pressure plate 223 is attached to the outside of the limiting frame 212, and the collar 224 is inserted into the limiting frame 212. Therefore, the left clamping component 22 can rotate circumferentially on the side of the main component 21 without being able to detach from the main component 21. The left connecting ear 226 is used to connect the left clamping component 22 to the push frame 218.

[0045] Furthermore, refer to Figure 8 The right clamping component 23 also includes a pressure plate 233 located outside the right drive ring 231, a collar 234 disposed between the pressure plate 233 and the right drive ring 231, and a right connecting ear 236 disposed on the side of the right drive ring 231. One end of the right push rod 235 is rotatably connected to the right connecting ear 236. The structure of the right clamping component 23 here is the same as that of the left clamping component 22. Its working principle and connection relationship with the main body component 21 are also the same as those of the left clamping component 22. The difference is that the right clamping component 23 is connected to the other side of the main body component 21, while the right connecting ear 236 is connected to the other end of the push frame 218.

[0046] Among them, reference Figure 4 The clamping frame 24 includes a plug 241 inserted into the limiting groove 214, an extension shaft 242 laterally disposed on the outside of the plug 241, and a clamping plate 243 laterally disposed on the inner end of the plug 241. Since the plug 241 is inserted into the limiting groove 214, the clamping frame 24 as a whole is limited by the limiting groove 214.

[0047] Furthermore, refer to Figure 9 and Figure 10The extension shaft 242 extends outward through the limiting groove 214 and is inserted into the clamping frame 24 in the limiting groove 214 near the left clamping member 22. Its corresponding extension shaft 242 extends into the first pushing groove 222. The clamping frame 24 inserted into the limiting groove 214 near the right clamping member 23 has its corresponding extension shaft 242 extending into the second pushing groove 232. The extension shaft 242 extending into the first pushing groove 222 will cause its corresponding clamping frame 24 to be pushed by the first pushing groove 222. Similarly, the extension shaft 242 extending into the second pushing groove 232 will also cause its corresponding clamping frame 24 to be pushed by the second pushing groove 232.

[0048] Furthermore, refer to Figure 4 A rubber gasket is fitted to the inner side of the clamping plate 243. The inner and outer walls of the gasket are provided with a textured structure to increase friction. The rubber gasket is the part that contacts the pipe. The rubber material can deform to a certain extent when clamped, increasing the contact area with the circular pipe and forming a buffer to prevent damage to the pipe. The textured structure to increase friction is also to enhance the stability during clamping.

[0049] Among them, reference Figure 1 and Figure 2 The workbench 1 is equipped with a cutting component 11, which is located between two sets of clamping units 2. The workbench 1 is also equipped with a drive rod 12, which is connected to the side of the two sets of clamping units 2. A bevel gear 121 is provided on the drive rod 12 at the position where it contacts the clamping unit 2. The cutting component 11 is used for cutting the pipe. The bevel gear 121 meshes with the bevel gear 219. Therefore, when the drive rod 12 is rotated, the screw 216 is driven by the transmission meshing of the bevel gear 121 and the bevel gear 219 to drive the slide table 217 to control the push frame 218 to synchronously push the left clamping component 22 and the right clamping component 23 to work, thereby achieving the purpose of controlling the overall working state of the clamping unit 2.

[0050] In summary, when using this cutting device to cut pipes of different specifications, the clamping unit 2 can be used to limit and fix the pipe. Firstly, when clamping relatively regular round pipes 3 and square pipes 4, the pipe to be cut is inserted into the clamping unit 2, allowing it to pass between the four clamping frames 24. The drive rod 12 drives the screw 216 to rotate. The rotating screw 216 pushes the pusher frame 218 closer to the mounting frame 211 via the slide table 217. During the movement, the pusher frame 218 pushes the left clamping component 22 and the right clamping component 23 together via the left push rod 225 and the left connecting lug 226 connected at both ends. The left push rod 225 and the right push rod 235 rotate in opposite directions. During this process, the left push rod 225 and the right push rod 235 will adapt their angle positions by rotating with the push frame 218, thereby ensuring that the left clamping component 22 and the right clamping component 23 can rotate normally. The synchronously rotating left clamping component 22 and the right clamping component 23 will push their respective clamping frames 24 through the push groove 1 222 and the push groove 232 to form vertical and horizontal clamping and limiting operations. At this time, the two sets of clamping frames 24 in the vertical direction and the two sets of clamping frames 24 in the horizontal direction cooperate with each other to achieve effective limiting clamping of the circular tube 3 and the square tube 4 in multiple directions and at multiple points. Figure 11 As shown;

[0051] When clamping the elliptical tube 5 and the rectangular tube 6, assuming that the two sets of clamping frames 24 driven by the right clamping component 23 first contact the two protruding surfaces of the elliptical tube 5 or the rectangular tube 6 and apply vertical clamping, the clamping frames 24 in contact with it will apply a reverse clamping force to the right clamping component 23, thus preventing the right clamping component 23 from rotating. At this time, the left clamping component 22 is still pushed by the pusher 218 to rotate. During the process of the pusher 218 pushing the left clamping component 22 to rotate through the left push rod 225, the right push rod 23... 5 will apply a reverse force to one end of the push frame 218, thereby creating a lever effect in the push frame 218. This increases the angle of the push on the left push rod 225 through the other end of the push frame 218, causing the left clamping component 22, which is still being pushed by the left push rod 225, to rotate. Finally, as the left clamping component 22 continues to rotate, its corresponding two sets of clamping frames 24 will abut against the other two sides of the elliptical tube 5 or rectangular tube 6, applying horizontal clamping and limiting. At this time, the clamping unit 2 can achieve multi-directional effective limiting and clamping of the elliptical tube 5 or rectangular tube 6, such as... Figure 12As shown, in the above process, the overall length of the left push rod 225, the right push rod 235 and the push frame 218 is fixed, and the three are connected by rotation. Therefore, in actual operation, the three can be flexibly adjusted according to the actual specifications of the elliptical tube 5 and the rectangular tube 6 through adaptive angle changes, so that the device can limit and clamp pipes of different specifications.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A pipe cutting device, comprising a worktable (1) and two sets of clamping units (2), characterized in that: The clamping unit (2) includes a main body component (21) with an annular structure, a left clamping component (22) and a right clamping component (23) respectively rotatably disposed on both sides of the main body component (21), and multiple sets of clamping frames (24) evenly distributed in the main body component (21). The main component (21) includes a ring-shaped mounting frame (211), with the left clamping component (22) and the right clamping component (23) located on both sides of the mounting frame (211), and two sets of limiting grooves (214) distributed on both sides of the mounting frame (211). Each set of mounting frames (211) is fitted with a set of clamping frames (24), a screw (216) is provided on the side of the mounting frame (211), a slide (217) is threadedly connected to the screw (216), and a push frame (218) is mounted on the slide (217). The center of the push frame (218) is rotatably connected to the slide (217). The left clamping component (22) includes a left drive ring (221) located on the side of the main component (21), a push groove (222) symmetrically arranged in the horizontal direction on the left drive ring (221), and one side of the clamping frame (24) extending into the push groove (222), and a left push rod (225) rotatably connected to one side of the left drive ring (221), and the outer end of the left push rod (225) rotatably connected to one end of the push frame (218); The right clamping component (23) includes a right drive ring (231) located on the other side of the main component (21), a push groove (232) symmetrically arranged vertically on the right drive ring (231), and one side of the clamping frame (24) extending into the push groove (232), and a right push rod (235) rotatably connected to one side of the right drive ring (231), and the outer end of the right push rod (235) rotatably connected to the other end of the push frame (218).

2. The pipe cutting device according to claim 1, characterized in that: The limiting groove (214) has a convex shape in cross section. The top of the convex shape of the limiting groove (214) near the left clamping component (22) extends towards the left clamping component (22), while the top of the convex shape of the limiting groove (214) near the right clamping component (23) extends towards the right clamping component (23).

3. The pipe cutting device according to claim 1, characterized in that: The main component (21) also includes a limiting frame (212) symmetrically arranged on both sides of the mounting frame (211), a mounting groove (213) located between the mounting frame (211) and the limiting frame (212), and the left drive ring (221) and the right drive ring (231) are respectively located in the mounting groove (213) on both sides of the mounting frame (211).

4. The pipe cutting device according to claim 1, characterized in that: The mounting bracket (211) has two sets of extension brackets (215) extending outward from its side, and the screw (216) is located between the two sets of extension brackets (215). At the same time, the outer end of the screw (216) is provided with a bevel gear (219).

5. The pipe cutting device according to claim 1, characterized in that: The left clamping component (22) also includes a pressure plate (223) located outside the left drive ring (221), a collar (224) disposed between the pressure plate (223) and the left drive ring (221), and a left connecting ear (226) disposed on the side of the left drive ring (221), and one end of the left push rod (225) is rotatably connected to the left connecting ear (226).

6. The pipe cutting device according to claim 1, characterized in that: The right clamping component (23) also includes a pressure plate two (233) located outside the right drive ring (231), a collar two (234) disposed between the pressure plate two (233) and the right drive ring (231), and a right connecting ear (236) disposed on the side of the right drive ring (231), and one end of the right push rod (235) is rotatably connected to the right connecting ear (236).

7. The pipe cutting device according to claim 1, characterized in that: The clamping frame (24) includes a plug (241) inserted into a limiting groove (214), an extension shaft (242) laterally disposed on the outside of the plug (241), and a clamping plate (243) laterally disposed on the inner end of the plug (241).

8. The pipe cutting device according to claim 7, characterized in that: The extension shaft (242) extends outward through the limiting groove (214) and is inserted into the clamping frame (24) in the limiting groove (214) near the left clamping member (22). Its corresponding extension shaft (242) extends into the first pushing groove (222). The clamping frame (24) inserted into the limiting groove (214) near the right clamping member (23) has its corresponding extension shaft (242) extending into the second pushing groove (232).

9. The pipe cutting device according to claim 7, characterized in that: The inner side of the clamp (243) is fitted with a gasket made of rubber material, and the inner outer wall of the gasket is provided with a mesh structure to increase friction.

10. The pipe cutting device according to claim 1, characterized in that: The workbench (1) is provided with a cutting component (11), and the cutting component (11) is located between two sets of clamping units (2). The workbench (1) is also provided with a drive rod (12), and the drive rod (12) is connected to the side of the two sets of clamping units (2). A bevel gear (121) is provided on the drive rod (12) at the position where it contacts the clamping unit (2).

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