Pipeline cutting equipment

Abstract

The invention provides pipeline cutting equipment and belongs to the technical field of cutting equipment.The pipeline cutting equipment comprises a rack, a first clamping tool, a second clamping tool and a cutting mechanism, and the first clamping tool is used for clamping the outer side wall of a pipeline; the second clamping tool is used for abutting against the inner side wall of the pipeline. The cutting mechanism is used for cutting the pipeline; when a pipeline is cut, the first clamping tool and the second clamping tool can be used for clamping the two cut ends of the pipeline, so that the situation that the cut-off ends fall down along with cutting feeding is avoided, burrs and burrs generated due to the falling-off ends are avoided, and in subsequent treatment, only simple trimming is needed, and even trimming is not needed. Therefore, the production efficiency can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cutting equipment, and in particular relates to a pipe cutting equipment. Background Art

[0002] Existing pipe cutting equipment uses a cutting blade to directly cut the pipe. When the pipe is about to be cut, the cut end of the pipe will tilt downward under the action of gravity, resulting in sharp burrs and flashes on the edge of the cut. The burrs and flashes need to be processed before the subsequent welding or installation of the pipe. Especially for the application of welded pipes, it is necessary to ensure that the ports of the two pipes are connected flush, and the processing requirements for burrs and flashes are higher, which affects production efficiency. Therefore, it is necessary to improve the existing pipe cutting equipment. Summary of the invention

[0003] The present invention aims to solve at least one of the above-mentioned technical problems existing in the prior art. To this end, the present invention provides a pipe cutting device that can alleviate the situation of burrs or flashes generated by cutting, thereby reducing the requirements for subsequent processing and helping to improve production efficiency.

[0004] According to an embodiment of the present invention, the pipe cutting equipment includes a frame, a first clamping tool, a second clamping tool and a cutting mechanism, wherein the first clamping tool is arranged on the frame, and the first clamping tool is used to clamp the outer wall of the pipe; the second clamping tool is arranged on the frame, and the second clamping tool is used to support the inner wall of the pipe; the cutting mechanism is arranged on the frame for cutting the pipe; one of the first clamping tool and the second clamping tool at least acts on the first end of the pipe to be cut, and the other at least acts on the second end of the pipe to be cut, so that both ends of the cut pipe are clamped and fixed.

[0005] The pipe cutting device according to the embodiment of the present invention has at least the following beneficial effects: when cutting a pipe, the pipe cutting device of the present invention can use the first clamping tool and the second clamping tool to clamp the two ends of the cut pipe, thereby preventing the cut end from falling down with the cutting feed, avoiding the burrs and flashing caused thereby, and in the subsequent processing, only simple cleaning is required, or even no cleaning is required. Therefore, it helps to improve production efficiency.

[0006] According to some embodiments of the present invention, the first clamping fixture and the second clamping fixture are arranged at left and right ends of the frame or are arranged at the left end or the right end of the frame at the same time.

[0007] According to some embodiments of the present invention, the cutting mechanism is arranged on the frame so as to be movable and adjustable in left-right directions.

[0008] According to some embodiments of the present invention, the first clamping tool includes a plurality of clamping jaws arranged on the same circumference and a clamping drive mechanism for driving all of the clamping jaws to open or close synchronously.

[0009] According to some embodiments of the present invention, the second clamping tool comprises:

[0010] A support rod, wherein the support rod is provided with a threaded section;

[0011] Open the driving motor to drive the support rod to control the support rod to rotate around its own axis;

[0012] An adjusting portion, mounted on the threaded section through threads;

[0013] A plurality of connecting rod assemblies are arranged around the support rod, one end of the connecting rod assembly is hinged, and the other end is hinged to the adjusting part;

[0014] When the opening drive motor drives the support rod to rotate forward, it drives the adjusting part to move to the left, driving the connecting rod assembly to expand in a direction away from the support rod; when the opening drive motor drives the support rod to rotate reversely, it drives the adjusting part to move to the right, driving the connecting rod assembly to fold in a direction close to the support rod.

[0015] According to some embodiments of the present invention, the connecting rod assembly includes a first connecting rod, a second connecting rod and a supporting portion, wherein one end of the first connecting rod is hinged to the frame, one end of the second connecting rod is hinged to the first connecting rod, and the other end is hinged to the adjusting portion, and the supporting portion is arranged at the hinged ends of the first connecting rod and the second connecting rod.

[0016] According to some embodiments of the present invention, the supporting portion is a structure made of elastic material.

[0017] According to some embodiments of the present invention, the adjustment portion is provided with a second waist-shaped hole along the axial direction of the support rod, a second spring is provided in the second waist-shaped hole, the axis of the second spring is parallel to the axis of the support rod, and the second connecting rod is provided with a second pin shaft slidably mounted in the second waist-shaped hole, and the second pin shaft is supported on one end of the second spring close to the first connecting rod.

[0018] According to some embodiments of the present invention, the second clamping tool is provided with a sleeve sleeved on the outside of the support rod, the sleeve is provided with a first waist-shaped hole, a first spring is provided in the first waist-shaped hole, the first connecting rod is provided with a first pin shaft slidably fitted in the first waist-shaped hole, and the first pin shaft is supported on one end of the first spring close to the second connecting rod.

[0019] According to some embodiments of the present invention, the frame is provided with a support platform for supporting the pipeline, and the first clamping tool and the second clamping tool can be adjusted up and down relative to the support platform.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and some additional aspects and advantages will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 It is a schematic diagram of an overall structure of the present invention;

[0023] Figure 2 is a structural schematic diagram of a second clamping tool;

[0024] Figure 3 for Figure 2 A magnified schematic diagram of the middle A area;

[0025] Figure 4 A schematic diagram of the structure of the top holding part. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Existing pipe cutting equipment uses a cutting blade to directly cut the pipe. When the pipe is about to be cut, the cut end of the pipe will tilt downward under the action of gravity, resulting in sharp burrs and flashes on the edge of the cut. The burrs and flashes need to be processed before the subsequent welding or installation of the pipe. Especially for the application of welded pipes, it is necessary to ensure that the ports of the two pipes are connected flush, and the processing requirements for burrs and flashes are higher, which affects production efficiency. Therefore, it is necessary to improve the existing pipe cutting equipment.

[0031] To this end, the present invention provides a pipe cutting device that can alleviate the situation where burrs or flashes are generated during cutting, thereby reducing the requirements for subsequent processing and helping to improve production efficiency.

[0032] Reference Figures 1 to 4 As shown, a pipe cutting device according to an embodiment of the present invention includes a frame 100 and a first clamping tool 200 , a second clamping tool 300 and a cutting mechanism 400 arranged on the frame 100 .

[0033] The first clamping tool 200 is used to clamp the outer wall of the pipeline. The second clamping tool 300 is used to hold the inner wall of the pipeline. The cutting mechanism 400 is arranged on the frame 100 and is used for cutting the pipeline.

[0034] Since cutting usually refers to cutting a pipe into two, the pipe is divided into a first section and a second section with the pipe cutting line as the boundary. When clamping, the first clamping tool 200 and the second clamping tool 300 have multiple matching modes:

[0035] The first mode is: the first clamping tool 200 clamps the first section of the pipe, the second clamping tool 300 holds the inner wall of the second section of the pipe, and the cutting mechanism 400 performs cutting along the cutting line;

[0036] The second mode is: two first clamping tools 200 are provided, and they clamp the outer surfaces of the first section and the second section of the pipe respectively; two second clamping tools 300 are provided, and they hold the inner surfaces of the first section and the second section of the pipe respectively; and the cutting mechanism 400 performs cutting along the cutting line;

[0037] The third mode is: the first clamping tool 200 clamps the first section of the pipe, and the second clamping tool 300 simultaneously holds the first section and the second section of the pipe;

[0038] The fourth mode is: the first clamping tool 200 clamps the first section and the second section of the pipe at the same time, and the second clamping tool 300 only clamps the first section or the second section;

[0039] It is understandable that the above four configuration modes can achieve the process of pipe cutting, while the first section and the second section of the pipe are relatively fixed, so as to prevent one section from tilting and falling under the action of gravity. Therefore, both ends of the pipe being cut are clamped and fixed, which can improve the flatness of the fracture.

[0040] The pipe cutting device of the present invention can use the first clamping tool 200 and the second clamping tool 300 to clamp the two ends of the cut pipe when cutting the pipe, so as to prevent the cut end from falling down with the cutting feed, and avoid the burrs and flashes caused thereby. In the subsequent processing, only simple cleaning is required, or even no cleaning is required. Therefore, it is helpful to improve production efficiency.

[0041] In some embodiments of the present invention, the first clamping tool 200 and the second clamping tool 300 are disposed at the left and right ends of the frame 100, so that the two ends of the pipeline can be clamped respectively.

[0042] In some embodiments of the present invention, the first clamping fixture 200 and the second clamping fixture 300 are simultaneously arranged at the left end or the right end of the frame 100. With the structural arrangement of this embodiment, the first clamping fixture 200 and the second clamping fixture 300 clamp the same end of the pipe. It should be noted that although the first clamping fixture 200 and the second clamping fixture 300 clamp the same end of the pipe, the actual clamping position is such that both ends of the cutting line of the pipe are clamped and fixed, rather than only one end.

[0043] It can be understood that the above two implementation structures are suitable for different cutting lengths. For example, when the pipe is long and the cutting line is far from the end of the pipe, it is more suitable for the first clamping fixture 200 and the second clamping fixture 300 to be located at the left and right ends of the frame 100, while when the cutting line is close to the end of the pipe, it is more suitable for the first clamping fixture 200 and the second clamping fixture 300 to be located at the same end of the frame 100. This is conducive to simplifying the structural design and strength requirements.

[0044] In some embodiments of the present invention, the cutting mechanism 400 is arranged on the frame 100 so as to be movable and adjustable in the left-right direction, thereby facilitating adjustment to meet the cutting requirements at any position.

[0045] In some embodiments of the present invention, the first clamping tool 200 includes a plurality of jaws arranged on the same circumference and a clamping drive mechanism for driving all the jaws to open or close synchronously. The first clamping tool 200 leaves space between the plurality of jaws so that the pipe can pass through the middle of the jaws, thereby adapting to pipes of different lengths. Since the pipe passes through the middle of the jaws, the jaws can be smoothly clamped and automatically aligned (i.e., the center is automatically aligned) when they are closed. Since in the relevant prior art, the structure of the clamping of the jaws belongs to a mature technical field, it will not be described in detail here, and those skilled in the art can make settings with reference to the relevant prior art.

[0046] Reference Figure 1 and Figure 2 In some embodiments of the present invention, the second clamping tool 300 includes a support rod 301, an opening drive motor, an adjustment part 303 and a plurality of connecting rod assemblies 302, wherein the support rod 301 is rotatably arranged and is provided with a threaded section. The opening drive motor is connected to the support rod 301 by transmission, and is used to control the support rod 301 to rotate around its own axis. The adjustment part 303 is installed on the threaded section by thread. The connecting rod assembly 302 is arranged around the support rod 301, one end of the connecting rod assembly 302 is hinged, and the other end is hinged to the adjustment part 303. When the opening drive motor drives the support rod 301 to rotate forward, the adjustment part 303 is driven to move to the left, driving the connecting rod assembly 302 to expand in a direction away from the support rod 301; when the opening drive motor drives the support rod 301 to reverse, the adjustment part 303 is driven to move to the right, driving the connecting rod assembly 302 to collapse in a direction close to the support rod 301. With the structural setting of this embodiment, the connecting rod assembly 302 can be controlled to expand or collapse by opening the driving motor. When expanded, it can support and fix the inner wall of the pipeline, and when collapsed, it can be separated from the pipeline.

[0047] Reference Figure 2 In some embodiments of the present invention, the connecting rod assembly 302 includes a first connecting rod 3021, a second connecting rod 3022 and a supporting portion 3023, wherein one end of the first connecting rod 3021 is hinged to the frame 100, one end of the second connecting rod 3022 is hinged to the first connecting rod 3021, and the other end is hinged to the adjusting portion 303, and the supporting portion 3023 is arranged at the hinged end of the first connecting rod 3021 and the second connecting rod 3022. Since the adjusting portion 303 moves leftward or rightward with the rotation of the support rod 301, it will drive the first connecting rod 3021 and the second connecting rod 3022 to extend or shorten, and shortening controls the supporting portion 3023 to expand, and extending controls the supporting portion 3023 to retract.

[0048] Obviously, when one supporting part 3023 is difficult to ensure the positioning and fixing effect of pipe cutting, the supporting position can be increased by adding a connecting rod, such as sliding a sleeve on the support rod 301, and adding a third connecting rod and a fourth connecting rod. At this time, one end of the first connecting rod 3021 is hinged to the frame 100, and the other end is hinged to the third connecting rod, the other end of the third connecting rod is hinged to the sleeve, one end of the fourth connecting rod is hinged to the sleeve, and the other end is hinged to the second connecting rod 3022, and the end of the second connecting rod 3022 is hinged to the adjusting part 303. Two supporting parts 3023 are provided, and they are respectively provided at the hinge of the first connecting rod 3021 and the third connecting rod, and at the hinge of the fourth connecting rod and the second connecting rod 3022. In this way, there are two supporting positions along the axial direction. According to the principle, three, four and other supporting positions can be further provided. Furthermore, the distance between two adjacent holding positions can be used to locate the two holding positions on both sides of the pipeline cutting line, thereby realizing the arrangement in which the second clamping tool 300 is simultaneously held on both sides of the pipeline cutting line.

[0049] In some embodiments of the present invention, the supporting portion 3023 is a structure made of elastic material, such as a rubber sheet structure, a rubber sphere structure, etc. This can avoid damage caused by rigid abutment during supporting.

[0050] Reference Figure 2 and Figure 3 Further, in some embodiments of the present invention, the adjusting portion 303 is provided with a second waist-shaped hole 3031 along the axial direction of the support rod 301, a second spring is provided in the second waist-shaped hole 3031, the axis of the second spring is parallel to the axis of the support rod 301, and the second connecting rod 3022 is provided with a second pin slidably mounted in the second waist-shaped hole 3031, and the second pin is supported on one end of the second spring close to the first connecting rod 3021. In this way, when the adjusting portion 303 moves and drives the connecting rod assembly 302 to expand to abut against the inner wall of the pipe, the second spring can apply an elastic supporting force to the second connecting rod 3022, so that the connecting rod assembly 302 is elastically supported against the inner wall of the pipe.

[0051] Similarly, refer to Figure 2 and Figure 3In some embodiments of the present invention, the second clamping fixture 300 is provided with a sleeve 304 sleeved on the outside of the support rod 301, the sleeve 304 is provided with a first waist-shaped hole 3042, the first waist-shaped hole 3042 is provided with a first spring 3043, the first connecting rod 3021 is provided with a first pin slidably mounted in the first waist-shaped hole 3042, and the first pin is supported on one end of the first spring 3043 close to the second connecting rod 3022. In this way, the first connecting rod 3021 also has an elastic adjustment space, combined with the design of the second connecting rod 3022 and the elastic supporting part 3023, the supporting force on the pipeline can be effectively maintained. And based on the elastic supporting, a pre-tightening force can be applied when supporting the pipeline to ensure the reliability of the clamping. Avoid damage to the opening drive motor.

[0052] In some embodiments of the present invention, the frame 100 is provided with a support for supporting the pipeline, and the first clamping fixture 200 and the second clamping fixture 300 can be adjusted up and down relative to the support. In this way, pipelines of different diameters can be adapted. When the diameter of the pipe is large, the first clamping fixture 200 and the second clamping fixture 300 can be moved upward to align with the center of the pipeline. Due to the bearing of the support, the self-weight of the pipeline is shared by the support, and the first clamping fixture 200 and the second clamping fixture 300 only need to be relatively fixed, which is conducive to further reducing the generation of burrs and flashes.

[0053] It should be noted that, in this embodiment, since the second clamping fixture 300 can move up and down, the hinged end of the first connecting rod 3021 should be the base part of the second clamping fixture 300 instead of the frame 100 .

[0054] It is also understandable that the support rod 301 of the second clamping tool 300 can also be rotated by manual drive.

[0055] Reference Figures 1 to 3In some embodiments of the present invention, the pipe cutting device includes a frame 100, a first clamping fixture 200, a second clamping fixture 300 and a cutting mechanism 400. A support is provided on the frame 100. The first clamping fixture 200 is arranged at the right end of the support so as to be adjustable in height. The first clamping fixture 200 includes a first clamping seat and a first lifting drive mechanism for driving the first clamping seat to be adjusted in height. The first clamping seat is provided with a clearance opening 201 in the left and right directions, and a plurality of clamping claws are distributed circumferentially around the center of the clearance opening 201 on the first clamping seat, and the clamping claws can be moved and adjusted in the radial direction of the center of the clearance opening 201 and driven by the clamping drive mechanism. In the field of machining, there are many structural forms of clamping claws, so the specific structure of the clamping drive mechanism can be used for reference, and will not be described in detail here. Those skilled in the art can flexibly set it according to needs. The second clamping fixture 300 is arranged at the left end of the support so as to be adjustable in height. The second clamping fixture 300 includes a second clamping seat and a second lifting drive mechanism for driving the second clamping seat to be raised and lowered. The second clamping seat is rotatably provided with a support rod 301, and the length of the support rod 301 extends in the left-right direction. At the same time, the second clamping seat is provided with a sleeve 304 sleeved on the outside of the support rod 301, and the outer peripheral surface of the sleeve 304 is provided with three ribs 3041, and the ribs 3041 are provided with a first waist-shaped hole 3042, and the first waist-shaped hole 3042 is provided with a first spring 3043. The second clamping fixture 300 is also provided with three connecting rod assemblies 302, and each connecting rod assembly 302 includes a first connecting rod 3021, a second connecting rod 3022 and an adjusting portion 303. The adjusting portion 303 is connected to the support rod 301 by threading. The outer peripheral surface of the adjusting portion 303 is provided with a second waist-shaped hole 3031 along the axial direction of the support rod 301, and the second spring is provided in the second waist-shaped hole 3031, and the axis of the second spring is parallel to the axis of the support rod 301. One end of the first connecting rod 3021 is provided with a first pin shaft and is fitted in the first waist-shaped hole 3042, and is supported by one end of the first spring 3043 close to the adjusting portion 303. One end of the second connecting rod 3022 is provided with a second pin shaft and is fitted in the second waist-shaped hole 3031, and is supported by one end of the second spring close to the sleeve 304. The close ends of the first connecting rod 3021 and the second connecting rod 3022 are hinged to each other. The cutting mechanism 400 can be arranged on the frame 100 to be movable and adjustable left and right, and the cutting mechanism 400 can at least be movable and adjustable up and down or forward and backward.

[0056] With the structural arrangement of the present embodiment, the pipe is first passed through the clearance opening 201 and placed on the support platform, and the heights of the first clamping seat and the second clamping seat are adjusted until the center of the clearance opening 201 is basically aligned with the center of the pipe, and the center of the support rod 301 is basically aligned with the center of the pipe. The left end of the pipe is inserted into the support rod 301, and then the first clamping tool 200 is controlled to clamp the outside of the pipe, and the connecting rod assembly 302 is controlled to open and support the inner wall of the pipe. Then the cutting mechanism 400 is moved to the set position to cut the pipe. It can be understood that in order to avoid interference, the support platform needs to be staggered with the cutting line, such as being staggered, or a knife groove for the blade to pass through is opened on the support platform. The design of the sleeve 304 helps to increase the length of the support rod 301, thereby increasing the length range that can be inserted into the pipe.

[0057] Reference Figure 3 , Figure 4 , the near ends of the first connecting rod 3021 and the second connecting rod 3022 are hinged on the supporting part 3023. The supporting part 3023 is a rubber structure, the outer peripheral side of the top thereof is a cylindrical surface 30231, and a connecting plate 30232 is arranged at the lower end thereof, the plate surface of the connecting plate 30232 is parallel to the axis of the cylindrical surface 30231, and a hinge hole is arranged on the connecting plate 30232. The first connecting rod 3021 and the second connecting rod 3022 are hinged on the two end surfaces of the connecting plate 30232. In this way, the inner wall of the pipeline can be supported by the cylindrical surface 30231, and the line contact is maintained, which is conducive to the clamping stability. In addition, the first connecting rod 3021 and the second connecting rod 3022 are hinged on the two end surfaces of the connecting plate 30232, and the connection stability between the two is high, and the characteristics of the rubber material can be used to avoid loosening.

[0058] Furthermore, a movable mounting seat may be provided on the frame 100 corresponding to the first clamping fixture 200 and the second clamping fixture 300 to achieve left-right movement of the two.

[0059] The present invention has been described in detail above in conjunction with the embodiments, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A pipe cutting device, characterized in that: include: frame; A first clamping tool, provided on the frame, the first clamping tool being used to clamp the outer side wall of the pipeline; A second clamping tool, provided on the frame, and used for holding the inner wall of the pipeline; A cutting mechanism, arranged on the frame, for cutting the pipe; Among them, one of the first clamping tool and the second clamping tool at least acts on the first end of the cut pipe, and the other at least acts on the second end of the cut pipe, so that both ends of the cut pipe are clamped and fixed.

2. The pipe cutting device according to claim 1, characterized in that: The first clamping fixture and the second clamping fixture are arranged at the left and right ends of the frame or at the left end or the right end of the frame at the same time.

3. The pipe cutting device according to claim 1, characterized in that: The cutting mechanism is arranged on the frame so as to be movable and adjustable in the left-right direction.

4. The pipe cutting device according to claim 1, characterized in that: The first clamping tool comprises a plurality of clamping jaws arranged on the same circumference and a clamping driving mechanism for driving all the clamping jaws to open or close synchronously.

5. The pipe cutting device according to claim 1, characterized in that: The second clamping tool comprises: A support rod, wherein the support rod is provided with a threaded section; Open the driving motor to drive the support rod to control the support rod to rotate around its own axis; An adjusting portion, mounted on the threaded section through threads; A plurality of connecting rod assemblies are arranged around the support rod, one end of the connecting rod assembly is hinged, and the other end is hinged to the adjusting part; When the opening drive motor drives the support rod to rotate forward, it drives the adjusting part to move to the left, driving the connecting rod assembly to expand in a direction away from the support rod; when the opening drive motor drives the support rod to rotate reversely, it drives the adjusting part to move to the right, driving the connecting rod assembly to fold in a direction close to the support rod.

6. The pipe cutting device according to claim 5, characterized in that: The connecting rod assembly includes a first connecting rod, a second connecting rod and a supporting portion, wherein one end of the first connecting rod is hinged to the frame, one end of the second connecting rod is hinged to the first connecting rod, and the other end is hinged to the adjusting portion, and the supporting portion is arranged at the hinged ends of the first connecting rod and the second connecting rod.

7. The pipe cutting device according to claim 6, characterized in that: The supporting part is a structure made of elastic material.

8. The pipe cutting device according to claim 6, characterized in that: The adjusting portion is provided with a second waist-shaped hole along the axial direction of the support rod, a second spring is provided in the second waist-shaped hole, the axis of the second spring is parallel to the axis of the support rod, the second connecting rod is provided with a second pin shaft slidably fitted in the second waist-shaped hole, the second pin shaft is supported on one end of the second spring close to the first connecting rod.

9. The pipe cutting device according to claim 6, characterized in that: The second clamping tool is provided with a sleeve which is sleeved on the outside of the support rod, the sleeve is provided with a first waist-shaped hole, a first spring is provided in the first waist-shaped hole, the first connecting rod is provided with a first pin shaft which is slidably fitted in the first waist-shaped hole, and the first pin shaft is supported on one end of the first spring close to the second connecting rod.

10. The pipe cutting device according to claim 1, characterized in that: The frame is provided with a support platform for supporting the pipeline, and the first clamping tool and the second clamping tool can be adjusted up and down relative to the support platform.

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