CN112171748A

CN112171748A - Pipeline cutting device

Info

Publication number: CN112171748A
Application number: CN202011107461.0A
Authority: CN
Inventors: 王洁
Original assignee: Fraenkische Pipe System Shanghai Co ltd
Current assignee: Fraenkische Pipe System Shanghai Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-01-05

Abstract

The application provides a pipeline cutting device, which comprises a base, a clamp and a cutter, wherein a cutting groove is formed in the base; the clamp is arranged on the base and used for clamping the pipeline and limiting the length of the pipeline extending out of the cutting groove to be equal to the precutting length; the cutter comprises a cutter frame and a blade, the cutter frame is arranged on the base, the blade is arranged on the cutter frame, and the cutter frame can drive the blade to move up and down in the cutting groove so as to cut the pipeline. The device can realize accurate control of cutting size.

Description

Pipeline cutting device

Technical Field

The application relates to the technical field of pipeline processing, in particular to a pipeline cutting device.

Background

The nylon tube is a synthetic fiber, has good physical, chemical and mechanical properties, and has the advantages of easy assembly, aging resistance, corrosion resistance, cleanness, easy shaping and the like. Therefore, nylon pipes are widely used in automotive pipe systems.

The nylon tube is generally connected with other pipelines, a water tank, an oil tank and the like through quick connectors. In order to facilitate the rapid assembly of the nylon pipe and the quick connector to realize batch production, the nylon pipe is additionally provided with a bell mouth at the beginning of design to guide. However, during the extrusion process, there is a difference in the size of the bell mouth due to the bottleneck of the process, for example, the inner diameter size of the bell mouth 5mm before the port is different from the inner diameter size of the bell mouth 5mm after the port, which really affects the actual assembly of the faucet pipe and the quick connector, and also plays a sealing requirement for the pipeline, namely, the part just after the bell mouth 5mm of the nylon pipe. Therefore, in the extrusion production control process, in order to control the dimensional accuracy of the nylon tube, the inner diameter size of the bell mouth after 5mm needs to be measured, and the common way is to cut off the part of the bell mouth 5mm before the port, and then measure the size of the cut port.

The currently used method for cutting off the part of the bell mouth, which is close to the front 5mm of the port, is to directly use an art knife to cut the part of the pipeline. However, when the method is used for cutting, the size is not controlled, and finally, the actual measurement size is inaccurate.

Disclosure of Invention

An object of the embodiment of this application is to provide a pipeline cutting device, and this device can realize the accurate control to cutting dimension.

The embodiment of the application provides a pipeline cutting device, which comprises a base, a clamp and a cutter, wherein a cutting groove is formed in the base; the clamp is arranged on the base and used for clamping the pipeline and limiting the length of the pipeline extending out of the cutting groove to be equal to the precut length; the cutter comprises a cutter frame and a blade, the cutter frame is arranged on the base, the blade is arranged on the cutter frame, and the cutter frame can drive the blade to move up and down in the cutting groove so as to cut the pipeline.

In the implementation process, the pipeline is clamped through the clamp, the length of the pipeline extending out of the cutting groove is the same as the pre-cutting length, the cutter rest drives the cutter blade to cut the pipeline in the cutting groove, and then the pipeline can be cut off according to the pre-cutting length, so that the cutting length can be accurately controlled.

In one possible implementation, the clamp is detachably mounted to the base.

In the implementation process, the pipelines with different outer diameters need different clamps to be clamped, so that the clamps are detachably connected with the base, and the clamps can be replaced. By replacing different clamps, the device can clamp and cut pipelines with different outer diameters, and the application range of the device is expanded.

In a possible implementation manner, the clamp comprises a clamping block and a limiting block which are respectively arranged at two sides of the cutting groove, the clamping block is used for clamping the pipeline, and the limiting block is used for matching with the clamping block to limit the length of the pipeline extending out of the cutting groove to be equal to the pre-cutting length.

In the implementation process, the clamp has the functions of clamping and limiting the cutting size, the clamp comprises a clamping block and a limiting block, the clamping block is used for achieving the function of clamping the pipeline, and the limiting block is used for being matched with the clamping block to achieve the function of limiting the cutting size.

In a possible implementation manner, the base comprises an upper base and a lower base, the lower base is rotatably connected with the upper base to realize opening and closing, and the cutting groove penetrates through the upper base and extends to the lower base; the clamping block comprises an upper clamping block and a lower clamping block, the upper clamping block is fixedly arranged on the upper base, and the lower clamping block is fixedly arranged on the lower base; when the base is closed, a clamping channel for clamping the pipeline can be matched between the upper clamping block and the lower clamping block.

In the implementation process, the upper clamping block is fixedly arranged on the upper base, the lower clamping block is fixedly arranged on the lower base, and when the upper base rotates relative to the lower base, the upper clamping block rotates relative to the lower base. Can be through rotating the upper base, then prevent on clamp splice down with the pipeline installation corresponding position, later closed upper base presss from both sides tight pipeline in the centre gripping passageway.

In a possible implementation manner, a limiting pipe groove is formed in the limiting block, and the clamping channel, the cutting groove and the limiting pipe groove are communicated in sequence; one end of the limiting pipe groove, which is far away from the cutting groove, is closed, or the shape of the limiting pipe groove and the shape of the clamping pipeline are the same as the shape of the corresponding part of the pipeline; the length of the limiting pipe groove is equal to the pre-cutting length.

In the implementation process, when the pipeline is clamped, one end of the pipeline to be cut sequentially passes through the clamping channel, the cutting groove and the limiting pipe groove, the limiting pipe groove is far away from one end of the cutting groove, the pipeline is prevented from continuing to extend forwards, or the shape of the limiting pipe groove and the shape of the clamping pipeline are the same as the shape of the corresponding part of the pipeline, the cutting length of the pipeline is limited, the length of the limiting pipe groove is equal to the pre-cutting length, the length of the pipeline extending out of the cutting groove can be equal to the pre-cutting length, and the pipeline can be cut according to the pre-cutting length.

In a possible implementation manner, an upper pipe groove is formed in the surface, close to the lower clamping block, of the upper clamping block, a lower pipe groove is formed in the surface, close to the upper clamping block, of the lower clamping block, and the upper pipe groove and the lower pipe groove are matched with each other to form the clamping channel when the base is closed.

In the implementation process, when the pipeline is clamped, the pipeline is firstly placed in the lower pipe groove, then the upper base is closed, and the upper clamping block is matched with the lower clamping block to clamp the pipeline.

In a possible implementation manner, the tool rest comprises a rotating frame, a mounting frame and a conversion connecting piece, wherein one end of the rotating frame is rotatably connected to the base; one end of the mounting rack is fixedly provided with the blade, and the other end of the mounting rack is arranged on the rotating rack; the conversion connecting piece is used for connecting the rotating frame and the mounting frame and converting the rotation of the rotating frame into the up-and-down movement of the blade along the cutting groove.

In the above-mentioned realization process, set up the conversion connecting piece and be used for converting the rotation of rotating turret into the blade along cutting the reciprocating of cut groove, consequently press from both sides behind the tight pipeline, when cutting the pipeline, the rotating turret rotates downwards, and under the effect of conversion connecting piece, the mounting bracket drives the blade and reciprocates along cutting the cut groove. Compare in the direct handheld art designer sword cutting pipeline, through the rotating turret and utilize lever principle, drive blade cutting pipeline, can reduce the operation dynamics, improve the convenience of operation.

In a possible implementation manner, the rotating frame comprises an upper surface and a lower surface, and a sliding groove penetrating through the upper surface and the lower surface is arranged on the rotating frame; one end of the conversion connecting piece is rotatably connected to the mounting frame through a first pin shaft, first annular wheels are sleeved at two ends of the first pin shaft, which extend out of the mounting frame, and the first annular wheels are configured to roll along the lower surface; the other end of the conversion connecting piece penetrates through the sliding groove and is provided with a second pin shaft, a second annular wheel is sleeved at two ends of the second pin shaft, and the second annular wheel is configured to roll along the upper surface.

In the implementation process, the conversion connecting piece is arranged to be of a movable pulley structure rolling along the rotating frame, when the rotating frame is lifted up or pressed down, the conversion connecting piece drives the mounting frame to roll along the rotating frame, so that the mounting frame can move up and down, and the purpose that the blades cut the pipeline along the cutting grooves is achieved.

In a possible implementation, the blade is hidden in the cutting groove under the action of gravity when no cutting is performed.

In the above-mentioned realization process, when not cutting, when the base was placed on ground, desktop or other surfaces of placing, when the knife rest was located the top of base, the blade can be hidden under the effect of the gravity of self and the gravity of rotating turret and mounting bracket in cutting cut groove to avoid blade fish tail operating personnel or other transport personnel, prevent the emergence of incident.

In a possible implementation manner, the tool holder further includes a handle, and one end of the handle is fixedly installed at one end of the rotating frame far away from the base.

In the implementation process, the handle is arranged at one end of the rotating frame, so that the force arm can be prolonged, the operation force is reduced, and the convenience and the easiness of operation are improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a structural diagram of a pipeline cutting device according to an embodiment of the present disclosure;

fig. 2 is a structural diagram of a base according to an embodiment of the present disclosure;

fig. 3 is a structural diagram of a lower base provided in an embodiment of the present application;

fig. 4 is a structural view illustrating an installation of a lower clamping block and a limiting block according to an embodiment of the present disclosure;

fig. 5 is a structural view of another pipe cutting apparatus according to an embodiment of the present disclosure;

fig. 6 is a structural diagram of a pipe cutting apparatus with an open base according to an embodiment of the present disclosure.

Icon: 100-a base; 110-cutting the groove; 200-a clamp; 300-a cutter; 400-a pipeline; 310-a tool holder; 320-a blade; 210-a clamping block; 220-a definition block; 120-an upper base; 130-a lower base; 211-upper clamping block; 212-lower clamping block; 221-defining a tube slot; 222-upper pipe groove; 223-a pipe discharging groove; 330-a rotating frame; 340-a mounting frame; 350-conversion connector; 331-upper surface; 332-lower surface; 333-sliding groove; 351-a first pin; 352-a first annular wheel; 353-a second pin shaft; 354-a second ring wheel; 500-handle.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

Referring to fig. 1, 2, 3 and 5, an embodiment of the present application provides a device for cutting a pipeline 400, which includes a base 100, a clamp 200 and a cutter 300, wherein the base 100 is provided with a cutting groove 110; the clamp 200 is mounted on the base 100 for clamping the pipe 400 and defining a length of the pipe 400 extending out of the cutting groove 110 equal to the precut length; the cutting tool 300 includes a tool holder 310 and a blade 320, the tool holder 310 is mounted on the base 100, the blade 320 is mounted on the tool holder 310, and the tool holder 310 can move the blade 320 up and down in the cutting groove 110 to cut the pipe 400.

In the implementation process, the clamp 200 clamps the pipeline 400, the length of the pipeline 400 extending out of the cutting groove 110 is the same as the pre-cutting length, and the cutter holder 310 drives the blade 320 to cut the pipeline 400 in the cutting groove 110, so that the pipeline 400 can be cut according to the pre-cutting length, and the cutting length can be accurately controlled.

When cutting the nylon tube, press from both sides tight nylon tube and make the length that the nylon tube stretches out cutting groove 110 equal to precut length, for example 5mm through anchor clamps 200, then drive blade 320 through knife rest 310 and cut, realize the accurate control to nylon tube cutting length, and then improve the measurement accuracy of follow-up nylon tube horn mouth internal diameter.

In one possible implementation, the clamp 200 is removably mounted to the base 100.

In the implementation process, the pipes 400 with different outer diameters need different clamps 200 for clamping, so that the clamps 200 can be detachably connected with the base 100, and replacement of the clamps 200 can be realized. By replacing different clamps 200, the device can clamp and cut pipelines 400 with different outer diameters, and the application range of the device is expanded.

In a possible implementation manner, referring to fig. 3, 4 and 5, the fixture 200 includes a clamping block 210 and a limiting block 220 respectively disposed at two sides of the cutting groove 110, the clamping block 210 is used for clamping the pipe 400, and the limiting block 220 is used for cooperating with the clamping block 210 to limit the length of the pipe 400 extending out of the cutting groove 110 to be equal to the pre-cutting length.

In the implementation process, the clamp 200 has the functions of clamping and limiting the cutting size, the clamp 200 comprises a clamping block 210 and a limiting block 220, the clamping block 210 is used for realizing the function of clamping the pipeline 400, and the limiting block 220 is used for cooperating with the clamping block 210 to realize the function of limiting the cutting size.

Specifically, the clamping block 210 and the limiting block 220 are detachably mounted on the base 100.

In a possible implementation manner, please refer to fig. 1 and fig. 6, the base 100 includes an upper base 120 and a lower base 130, the lower base 130 is rotatably connected with the upper base 120 to realize opening and closing, the cutting groove 110 penetrates through the upper base 120 and extends to the lower base 130; the clamping block 210 comprises an upper clamping block 211 and a lower clamping block 212, the upper clamping block 211 is fixedly arranged on the upper base 120, and the lower clamping block 212 is fixedly arranged on the lower base 130; when the base 100 is closed, a clamping channel for clamping the pipe 400 can be matched between the upper clamping block 211 and the lower clamping block 212.

In the implementation process, the upper clamping block 211 is fixedly installed on the upper base 120, the lower clamping block 212 is fixedly installed on the lower base 130, and when the upper base 120 rotates relative to the lower base 130, the upper clamping block 211 rotates relative to the lower base 130. The conduit 400 may be clamped within the clamping channel by rotating the upper base 120, then installing the conduit 400 in the corresponding position against the lower clamp block 212, and then closing the upper base 120.

Specifically, the upper clamping block 211 is detachably mounted to the upper base 120, and the lower clamping block 212 is detachably mounted to the lower base 130.

In some embodiments, an upper mounting groove is formed on a surface of the upper base 120 close to the lower base 130, a magnet is disposed on a bottom of the upper mounting groove, the upper clamping block 211 is clamped in the upper mounting groove, and the magnet adsorbs the upper clamping block 211, so that the upper clamping block 211 can be stably mounted on the upper base 120. The lower base 130 has a lower mounting groove on the surface thereof near the upper base 120, and the lower clamping block 212 is clamped in the lower mounting groove.

Optionally, a magnet is also disposed at the bottom of the lower mounting groove for attracting the lower clamping block 212.

In a possible implementation manner, the limiting block 220 is provided with a limiting pipe groove 221, the clamping channel, the cutting groove 110 and the limiting pipe groove 221 are sequentially communicated, one end of the limiting pipe groove 221, which is far away from the cutting groove 110, is closed, and the length of the limiting pipe groove 221 is equal to the pre-cutting length.

In the implementation process, when the pipeline 400 is clamped, one end of the pipeline 400 to be cut sequentially passes through the clamping channel, the cutting groove 110 and the limiting pipe groove 221, one end, far away from the cutting groove 110, of the limiting pipe groove 221 is closed to prevent the pipeline 400 from continuing to extend forwards, or the shape of the limiting pipe groove 221 and the shape of the clamping pipeline 400 are the same as the shape of the corresponding part of the pipeline 400, so that the cutting length of the pipeline 400 is limited, the length of the limiting pipe groove 221 is set to be equal to the pre-cutting length, the length of the pipeline 400 extending out of the cutting groove 110 can be equal to the pre-cutting length, and the pipeline 400 can be cut according to the pre-cutting length.

It should be noted that the length of the limiting pipe groove 221 is a distance from the closed end of the limiting pipe groove 221 to the end communicating with the cutting groove 110.

In some embodiments, the limiting block 220 includes an upper limiting block 220, the upper limiting block 220 is detachably mounted on the upper base 120, and a limiting pipe slot 221 is opened on the bottom surface of the upper limiting block 220 facing the lower base 130.

In some embodiments, the limiting block 220 includes a lower limiting block 220, the lower limiting block 220 is detachably mounted on the lower base 130, and a limiting pipe groove 221 is formed on a surface of the lower limiting block 220 facing the upper base 120.

In other embodiments, the limiting block 220 includes an upper limiting block 220 and a lower limiting block 220, the upper limiting block 220 is detachably mounted on the upper base 120, and the lower limiting block 220 is detachably mounted on the lower base 130. The upper and lower limiting

blocks

220, 220 may be configured to define a tube slot 221 when the base 100 is closed.

Specifically, the upper base 120 is provided with a first mounting groove, and the upper limiting block 220 is clamped in the first mounting groove. A second mounting groove is formed in the lower base 130, and the lower limiting block 220 is clamped in the second mounting groove.

In a possible implementation manner, an upper pipe groove 222 is formed on the surface of the upper clamping block 211 close to the lower clamping block 212, a lower pipe groove 223 is formed on the surface of the lower clamping block 212 close to the upper clamping block 211, and the upper pipe groove 222 and the lower pipe groove 223 cooperate to form a clamping channel when the base 100 is closed.

In the above implementation, when clamping the pipeline 400, the pipeline 400 is first placed in the lower pipe groove 223, then the upper base 120 is closed, and the upper clamping block 211 and the lower clamping block 212 cooperate to clamp the pipeline 400.

In one possible implementation, the tool holder 310 includes a rotating frame 330, a mounting frame 340, and a conversion connector 350, wherein one end of the rotating frame 330 is rotatably connected to the base 100; one end of the mounting frame 340 is fixedly provided with the blade 320, and the other end is arranged on the rotating frame 330; the conversion link 350 serves to connect the rotating frame 330 with the mounting frame 340 and to convert the rotation of the rotating frame 330 into the up and down movement of the blade 320 along the cutting slot 110.

In the above implementation process, the conversion connector 350 is provided to convert the rotation of the rotating frame 330 into the up-and-down movement of the blade 320 along the cutting groove 110, so that after the pipeline 400 is clamped, the rotating frame 330 is rotated downwards when the pipeline 400 is cut, and the mounting frame 340 drives the blade 320 to move up and down along the cutting groove 110 under the action of the conversion connector 350. Compare in the direct handheld art designer's sword cutting pipeline 400, through rotating turret 330 and application lever principle, drive blade 320 cutting pipeline 400, can reduce the operating strength, improve the convenience of operation.

Optionally, one end of the rotating frame 330 is rotatably connected to the upper base 120.

In a possible implementation manner, the rotating frame 330 includes an upper surface 331 and a lower surface 332, and the rotating frame 330 is provided with a sliding slot 333 penetrating through the upper surface 331 and the lower surface 332; one end of the conversion connector 350 is rotatably connected to the mounting frame 340 through a first pin 351, and a first annular wheel 352 is sleeved at two ends of the first pin 351 extending out of the mounting frame 340, and the first annular wheel 352 is configured to roll along the lower surface 332; the other end of the conversion connector 350 passes through the sliding groove 333 and is provided with a second pin 353, two ends of the second pin 353 are sleeved with a second annular wheel 354, and the second annular wheel 354 is configured to roll along the upper surface 331.

In the implementation process, the conversion connecting part 350 is set to be a movable pulley structure rolling along the rotating frame 330, and when the rotating frame 330 is lifted or pressed down, the conversion connecting part 350 drives the installation frame 340 and simultaneously rolls along the rotating frame 330, so that the installation frame 340 can move up and down, and the purpose that the blade 320 cuts the pipeline 400 along the cutting groove 110 is achieved.

In some embodiments, the distance between the axis of the first pin 351 and the axis of the second pin 353 is L, the radius of the first pin 351 is R1, the radius of the second pin 353 is R2, and the distance between the upper surface 331 and the lower surface 332 is H, where L is R1+ R2+ H.

In the implementation process, by setting L to R1+ R2+ H, the first annular wheel 352 and the second annular wheel 354 can clamp the rotating frame 330 from two sides of the rotating frame 330, so that the rotating connection member can only slide along the length direction of the rotating frame 330, and cannot move in other directions relative to the rotating frame 330, thereby ensuring the stability of the tool holder 310.

Optionally, the width of the cutting groove 110 is equal to or slightly larger than the thickness of the blade 320, so as to effectively improve the cutting accuracy.

In one possible implementation, the blade 320 is hidden within the cutting slot 110 under the force of gravity when no cutting is performed.

In the implementation process, when the base 100 is placed on the ground, a table top or other placing surfaces without cutting, and the knife rest 310 is located above the base 100, the blade 320 is hidden in the cutting groove 110 under the gravity of the blade 320 and the gravity of the rotating frame 330 and the mounting frame 340, so that the blade 320 is prevented from scratching operators or other carriers, and safety accidents are prevented.

In one possible implementation, the tool holder 310 further includes a handle 500, and one end of the handle 500 is fixedly mounted on the end of the rotating frame 330 far away from the base 100.

In the above implementation process, the handle 500 is disposed at one end of the rotating frame 330, so that the force arm can be extended, the operation force can be reduced, and the convenience and ease of operation can be improved.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. A pipe cutting apparatus, comprising:

the base is provided with a cutting groove;

the clamp is arranged on the base and used for clamping the pipeline and limiting the length of the pipeline extending out of the cutting groove to be equal to the precut length;

the cutter comprises a cutter rest and a blade, wherein the cutter rest is arranged on the base, the blade is arranged on the cutter rest, and the cutter rest can drive the blade to move up and down in the cutting groove so as to cut the pipeline.

2. The pipe cutting apparatus of claim 1,

the clamp is detachably mounted on the base.

3. The pipe cutting apparatus of claim 2,

the clamp comprises a clamping block and a limiting block, wherein the clamping block and the limiting block are respectively arranged on two sides of the cutting groove, the clamping block is used for clamping the pipeline, and the limiting block is used for being matched with the clamping block to limit the length of the pipeline extending out of the cutting groove to be equal to the precutting length.

4. The pipe cutting apparatus of claim 3,

the base comprises an upper base and a lower base, the lower base is rotatably connected with the upper base to realize opening and closing, and the cutting groove penetrates through the upper base and extends to the lower base;

the clamping block comprises an upper clamping block and a lower clamping block, the upper clamping block is fixedly arranged on the upper base, and the lower clamping block is fixedly arranged on the lower base; when the base is closed, a clamping channel for clamping the pipeline can be matched between the upper clamping block and the lower clamping block.

5. The pipe cutting apparatus of claim 4,

the limiting block is provided with a limiting pipe groove, and the clamping channel, the cutting groove and the limiting pipe groove are communicated in sequence;

one end of the limiting pipe groove, which is far away from the cutting groove, is closed, or the shape of the limiting pipe groove and the shape of the clamping pipeline are the same as the shape of the corresponding part of the pipeline;

the length of the limiting pipe groove is equal to the pre-cutting length.

6. The pipe cutting apparatus of claim 5,

an upper pipe groove is formed in the surface, close to the lower clamping block, of the upper clamping block, a lower pipe groove is formed in the surface, close to the upper clamping block, of the lower clamping block, and when the base is closed, the upper pipe groove and the lower pipe groove are matched with each other to form the clamping channel.

7. The pipe cutting apparatus of any one of claims 1-6,

the tool holder includes:

one end of the rotating frame is rotatably connected to the base;

one end of the mounting rack is fixedly provided with the blade, and the other end of the mounting rack is arranged on the rotating rack;

and the conversion connecting piece is used for connecting the rotating frame and the mounting frame and converting the rotation of the rotating frame into the up-and-down movement of the blade along the cutting groove.

8. The pipe cutting apparatus of claim 7,

the rotating frame comprises an upper surface and a lower surface, and a sliding groove penetrating through the upper surface and the lower surface is formed in the rotating frame;

one end of the conversion connecting piece is rotatably connected to the mounting frame through a first pin shaft, first annular wheels are sleeved at two ends of the first pin shaft, which extend out of the mounting frame, and the first annular wheels are configured to roll along the lower surface;

the other end of the conversion connecting piece penetrates through the sliding groove and is provided with a second pin shaft, a second annular wheel is sleeved at two ends of the second pin shaft, and the second annular wheel is configured to roll along the upper surface.

9. The pipe cutting apparatus of claim 7,

when the cutting is not carried out, the blade is hidden in the cutting groove under the action of gravity.

10. The pipe cutting apparatus of claim 7,

the tool rest further comprises a handle, and one end of the handle is fixedly arranged at one end, far away from the base, of the rotating frame.