Plastic pipe cutting machine

Abstract

The present invention belongs to the technical field of pipe cutting, and specifically is a plastic pipe cutting machine, comprising a cutting frame, a clamping mechanism and a cutting assembly; a fixed plate is fixedly installed at one end of the cutting frame, a closing plate is arranged on the outer wall of the fixed plate, a telescopic cylinder is arranged on the outer wall of the fixed plate, a plurality of limit rods are arranged on the outer wall of the closing plate, a slide groove is provided at the bottom of the cutting frame, a top cover is installed on the top of the cutting frame, a fixing piece is fixedly installed inside the cutting frame, a displacement bar is arranged inside the cutting frame, and the operation and cooperation of the clamping mechanism can achieve the effect of clamping pipes of different sizes inside and outside, and structures such as the cutting assembly and the core probe are located inside the pipe for cutting, which can prevent dust from splashing during cutting, and structures such as the transmission wheel and the transmission belt control the movement of the slider to better control the movement of the pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline cutting, in particular to a plastic pipeline cutting machine. Background Art

[0002] Plastic pipe cutting machine refers to the machine used to cut plastic pipes during the plastic pipe processing process. It is an indispensable equipment in the plastic pipe processing process. Plastic pipes are generally made of plastic resin as raw material, stabilizers, lubricants, etc., and are extruded in the pipe making machine by the "plastic" method. Due to its light weight, corrosion resistance, beautiful appearance, no bad smell, easy processing, and convenient construction, it has been more and more widely used in construction projects. It is mainly used for water supply system piping, drainage, exhaust and sewage sanitary pipes, underground drainage pipe systems, rainwater pipes, and wire threading pipes for wire installation, etc. Due to different requirements for the size of plastic pipes in various fields, plastic pipes must be cut at the end of production.

[0003] The prior art also proposes some solutions: for example, a patent application with publication number CN111113503A discloses a short-row plastic pipe cutting device: including a base, a mounting frame, a power component, a cutting component, a fixing component, a placing component, etc.; a mounting frame is installed on the top left side of the base, a power component powered by a motor is installed on the mounting frame, a cutting component for cutting the plastic pipe by lifting is installed on the right side of the mounting frame, and a fixing component for fixing the plastic pipe by lateral movement is installed on the right side of the mounting frame. The invention can drive the fixing component to automatically fix the plastic pipe through the power component, and then cut the plastic pipe through the cutting component, so as to achieve the effect of automatically cutting the plastic pipe.

[0004] Most of the plastic pipe cutting machines in the prior art still have the following areas for improvement: during the cutting process, the plastic pipe is usually required to be moved manually, which not only wastes manpower, but also has low cutting efficiency. The debris generated during cutting will fly everywhere, polluting the environment and affecting the health of on-site workers.

[0005] To this end: the present invention provides a plastic pipe cutting machine. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a plastic pipe cutting machine described in the present invention comprises a cutting frame, a clamping mechanism and a cutting assembly;

[0008] A fixed plate is fixedly installed at one end of the cutting frame, a closing plate is arranged on the outer wall of the fixed plate, a telescopic cylinder is arranged on the outer wall of the fixed plate, a plurality of limit rods are arranged on the outer wall of the closing plate, a sliding groove is opened at the bottom of the cutting frame, a top cover is arranged on the top of the cutting frame, a fixing piece is fixedly installed inside the cutting frame, and a displacement bar is arranged inside the cutting frame;

[0009] The cutting frame is used to support the whole device, the clamping mechanism is used to fix the pipe to be cut, the cutting assembly is used to cut the pipe, the telescopic cylinder is started, and its output shaft controls the movement of the closing plate. The closing plate controls the pipe core probe to gradually extend into the hole of the pipe through the limit rod, and the fixed plate and the telescopic cylinder have the effect of fixing the whole device and pushing the probe.

[0010] Preferably, the inner wall of the slide groove is slidably connected with a plurality of sliders, and the outer walls of the sliders are fixedly connected with lifting supports. The lifting supports are used to transport pipes. When the plastic pipes to be cut are moved to the lifting supports, the sliders are displaced forward, and the pipes on the lifting supports also move therewith. If the pipes are relatively long, when the first slider moves to a certain position, the second transmission wheel rotates, thereby achieving the effect of synchronous operation of the two sliders until the pipes are transported to a suitable position. The movement of the sliders achieves the effect of the lifting supports controlling the movement of the pipes.

[0011] Preferably, the clamping mechanism comprises a spiral plate, the outer wall of the spiral plate is slidably connected with a plurality of inner support members, an operating box is fixedly installed on the outer wall of the spiral plate, a toothed disc is arranged inside the operating box, a rotary control unit is arranged inside the operating box, and the teeth of the rotary control unit mesh with the teeth of the toothed disc; a motor is installed inside the top cover, the output shaft of the motor is provided with an internal gear, the outer wall of the fixing member is provided with an external gear, the internal gear meshes with the external gear, the inner wall of the external gear is threadedly connected with a clamping member, the outer wall of the fixing member is provided with a plurality of fixing blocks, the inner walls of the fixing blocks are all provided with fixing columns, one end of the fixing column is fixedly connected with the external gear, and the other end of the fixing column is fixedly connected with the outer wall of the rotary control unit;

[0012] The motor starts to control the rotation of the inner gear, and the inner gear controls the rotation of the toothed disc through the rotary control. The rotation of the toothed disc drives the spiral plate, and the inner support piece gradually moves outward along the trajectory on the spiral plate until it touches the inner wall of the pipe. At the same time, the outer gear also rotates due to meshing with the inner gear. The outer gear is threadedly connected to the clamping piece, so the clamping piece gradually moves inward to clamp and fix the pipe together with the inner support piece. After fixing, the pipe will be cut. Through the operation and cooperation of the clamping mechanism, it can achieve the effect of internal and external clamping of pipes of different sizes.

[0013] Preferably, the cutting assembly includes a limit plate, a plurality of limit grooves are formed on the outer wall of the limit plate, a limit ring is fixedly installed on the outer wall of the limit plate, a plurality of cutting blades are arranged on the outer wall of the limit ring, one end of the cutting blade is fixedly connected to the limit ring, and the other end of the cutting blade is slidably connected to the limit groove, and a fixing ring is arranged on the outer wall of the cutting blade. After the pipeline is clamped, the pipeline will be cut, and the fixing ring will be turned, one point of the cutting blade will be fixed, and the other point will slide along the limit groove on the limit plate until several cutting blades slide outward. At this time, the cutting assembly is controlled to rotate to cut the pipeline. The cutting is performed by the cutting assembly and the core probe and other structures located inside the pipeline, which can prevent dust from splashing during cutting.

[0014] Preferably, a tube core probe is provided on the outer wall of the fixing ring, and a detection member is provided on the outer wall of the limiting plate. The closing plate controls the tube core probe to gradually extend into the hole of the pipe through the limiting rod. The lifting support member controls its own height according to the data transmitted by the tube core probe so that the probe is always at the axis center of the pipe. The tube core probe can be used to locate the axis center of the pipe.

[0015] Preferably, the limit rod is fixedly connected to the detection member, and when the limit rod moves forward, the detection member controls the tube core probe to generate displacement.

[0016] Preferably, the outer walls of the sliders are provided with sliding rods, and the outer walls of the sliding rods are fixedly mounted with displacement gears, and the outer walls of the two displacement gears are fixedly connected with transmission wheels, and the first transmission wheel controls the rotation of the first displacement gear, and the displacement gear is meshed with the displacement rack. Therefore, the displacement gear controls the first slider to move forward through the sliding rod, and the pipeline on the lifting support also runs therewith. If the pipeline is relatively long, then when the first slider moves to a certain position, the second transmission wheel rotates, thereby achieving the effect of synchronous operation of the two sliders until the pipeline is transported to a suitable position. Through structures such as transmission wheels and transmission belts, the movement of the sliders is controlled separately, thereby better controlling the movement of the pipeline.

[0017] Preferably, the outer wall of the cutting frame is provided with an adjusting wheel and a tensioning wheel, and a transmission belt is connected between the two transmission wheels and the adjusting wheel. When the first slider moves to a certain position, the transmission belt will control the rotation of the second transmission wheel through the adjusting wheel and the tensioning wheel, thereby achieving the effect of synchronous operation of the two sliders, until the pipeline is transported to a suitable position, and the effect of controlling the second transmission wheel is achieved through the tensioning wheel and the adjusting wheel.

[0018] Preferably, a sliding member is provided on the outer wall of the slider, a sliding column is fixedly installed on the outer wall of the cutting frame, the sliding member is slidably connected to the sliding column, and when the slider is displaced, the sliding member fixedly connected to the slider will move along the sliding column on the cutting frame.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The plastic pipe cutting machine described in the present invention can achieve the effect of internal and external clamping of pipes of different sizes through the operation and cooperation of the clamping mechanism. The motor starts to control the rotation of the inner gear, and the inner gear controls the rotation of the toothed disc through the rotary control. The rotation of the toothed disc drives the spiral plate, and the inner support member gradually moves outward along the trajectory on the spiral plate until it contacts the inner wall of the pipe. At the same time, the outer gear also rotates due to meshing with the inner gear. The outer gear is threadedly connected to the clamping member, so the clamping member gradually moves inward to clamp and fix the pipe together with the inner support member.

[0021] 2. The plastic pipe cutting machine described in the present invention performs cutting by means of structures such as a cutting assembly and a pipe core probe located inside the pipe, thereby preventing dust from splashing during cutting. After fixation, the pipe will be cut. By turning the fixing ring, one point of the cutting blade will be fixed, and the other point will slide along the limiting groove on the limiting plate until several cutting blades slide outward. At this time, the cutting assembly is controlled to rotate to cut the pipe.

[0022] 3. The plastic pipe cutting machine described in the present invention, through structures such as transmission wheels and transmission belts, can control the movement of sliders separately and thus better control the movement of pipes. The first transmission wheel controls the rotation of the first displacement gear, and the displacement gear is meshed with the displacement rack. Therefore, the displacement gear controls the first slider to move forward through the sliding rod, and the pipe on the lifting support also runs accordingly. If the pipe is relatively long, then when the first slider moves to a certain position, the transmission belt will control the rotation of the second transmission wheel through the adjusting wheel and the tensioning wheel, thereby achieving the effect of synchronous operation of the two sliders until the pipe is transported to a suitable position. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is an overall diagram of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the fixed disk of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the clamping and cutting part of the present invention;

[0027] Figure 4It is a front structural schematic diagram of the clamping mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of the reverse structure of the clamping mechanism of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the cutting assembly of the present invention;

[0030] Figure 7 It is a detailed structural diagram of the cutting assembly of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the transmission component of the present invention;

[0032] Fig. 9 It is a schematic diagram of the sliding column structure of the present invention.

[0033] In the figure: 100, cutting frame; 101, fixed plate; 102, closing plate; 103, telescopic cylinder; 104, limit rod; 105, slide; 106, top cover; 107, fixing member; 108, slider; 109, lifting support member; 110, displacement bar; 200, clamping mechanism; 201, spiral plate; 202, inner support member; 203, operation box; 204, toothed disc; 205, rotary control; 206, motor; 207, internal gear; 208, External gear; 209, clamping member; 210, fixing block; 211, fixing column; 300, cutting assembly; 301, limiting plate; 302, limiting groove; 303, limiting ring; 304, cutting blade; 305, fixing ring; 306, core probe; 307, detection member; 308, sliding rod; 309, displacement gear; 310, transmission wheel; 311, adjusting wheel; 312, tensioning wheel; 313, transmission belt; 314, sliding member; 315, sliding column. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] like Figures 1 to 3 As shown, a plastic pipe cutting machine according to an embodiment of the present invention comprises a cutting frame 100, a clamping mechanism 200 and a cutting assembly 300;

[0036] A fixed plate 101 is fixedly installed at one end of the cutting frame 100, a closing plate 102 is arranged on the outer wall of the fixed plate 101, a telescopic cylinder 103 is arranged on the outer wall of the fixed plate 101, a plurality of limit rods 104 are arranged on the outer wall of the closing plate 102, a slide groove 105 is opened at the bottom of the cutting frame 100, a top cover 106 is installed on the top of the cutting frame 100, a fixing member 107 is fixedly installed inside the cutting frame 100, and a displacement bar 110 is arranged inside the cutting frame 100;

[0037] The cutting frame 100 is used to support the whole device, the clamping mechanism 200 is used to fix the pipe to be cut, the cutting assembly 300 is used to cut the pipe, the telescopic cylinder 103 is started, and its output shaft controls the movement of the closing plate 102. The closing plate 102 controls the pipe core probe 306 to gradually extend into the hole of the pipe through the limit rod 104, and the fixed plate 101 and the telescopic cylinder 103 play the effect of fixing the whole device and pushing the probe.

[0038] The inner wall of the slide 105 is slidably connected to a plurality of sliders 108, and the outer walls of the sliders 108 are fixedly connected to lifting supports 109, which are used for transporting the pipeline;

[0039] During operation, the plastic pipe to be cut is moved to the lifting support 109, the slider 108 moves forward, and the pipe on the lifting support 109 also moves therewith. If the pipe is relatively long, when the first slider 108 moves to a certain position, the second transmission wheel 310 rotates, thereby achieving the effect of synchronous operation of the two sliders 108 until the pipe is transported to a suitable position. Through the movement of the slider 108, the lifting support 109 controls the movement of the pipe.

[0040] like Figures 3 to 5 As shown, the clamping mechanism 200 includes a spiral plate 201, the outer wall of the spiral plate 201 is slidably connected to a plurality of inner support members 202, the outer wall of the spiral plate 201 is fixedly mounted with an operating box 203, a toothed disc 204 is disposed inside the operating box 203, a rotary control 205 is disposed inside the operating box 203, and the teeth of the rotary control 205 are meshed with the teeth of the toothed disc 204;

[0041] A motor 206 is installed inside the top cover 106, and an internal gear 207 is provided on the output shaft of the motor 206. An external gear 208 is provided on the outer wall of the fixing member 107, and the internal gear 207 meshes with the external gear 208. A clamping member 209 is threadedly connected to the inner wall of the external gear 208. A plurality of fixing blocks 210 are provided on the outer wall of the fixing member 107, and a fixing column 211 is provided on the inner wall of each fixing block 210. One end of the fixing column 211 is fixedly connected to the external gear 208, and the other end of the fixing column 211 is fixedly connected to the outer wall of the rotary control 205.

[0042] During operation, the motor 206 starts to control the rotation of the internal gear 207, and the internal gear 207 controls the rotation of the toothed disc 204 through the rotary control unit 205. The rotation of the toothed disc 204 drives the spiral plate 201, and the inner support member 202 gradually moves outward along the trajectory on the spiral plate 201 until it contacts the inner wall of the pipe. At the same time, the outer gear 208 also rotates due to the engagement with the inner gear 207. The outer gear 208 is threadedly connected to the clamping member 209, so the clamping member 209 gradually moves inward to clamp and fix the pipe together with the inner support member 202. After fixing, the pipe will be cut. Through the operation and cooperation of the clamping mechanism 200, the effect of internal and external clamping of pipes of different sizes can be achieved.

[0043] like Figure 6 to Figure 7 As shown, the cutting assembly 300 includes a limiting plate 301, a plurality of limiting grooves 302 are formed on the outer wall of the limiting plate 301, a limiting ring 303 is fixedly installed on the outer wall of the limiting plate 301, a plurality of cutting blades 304 are arranged on the outer wall of the limiting ring 303, one end of the cutting blade 304 is fixedly connected to the limiting ring 303, the other end of the cutting blade 304 is slidably connected to the limiting groove 302, and a fixing ring 305 is arranged on the outer wall of the cutting blade 304;

[0044] During operation, after the pipe is clamped, it will be cut. By turning the fixing ring 305, one point of the cutting blade 304 will be fixed, and the other point will slide along the limiting groove 302 on the limiting plate 301 until several cutting blades 304 slide outward. At this time, the cutting component 300 is controlled to rotate to cut the pipe. The cutting component 300 and the core probe 306 are located inside the pipe for cutting, which prevents dust from splashing during cutting.

[0045] like Figure 6 As shown, the outer wall of the fixing ring 305 is provided with a tube core probe 306, and the outer wall of the limiting plate 301 is provided with a detection member 307;

[0046] During operation, the closing plate 102 controls the tube core probe 306 to gradually extend into the hole of the pipe through the limit rod 104, and the lifting support 109 controls its own height according to the data transmitted by the tube core probe 306 so that the probe is always at the axis center of the pipe, thereby achieving the effect of locating the axis center of the pipe through the tube core probe 306.

[0047] like Figure 6 As shown, the limit rod 104 is fixedly connected to the detection member 307;

[0048] During operation, when the limiting rod 104 moves forward, the detection member 307 controls the tube core probe 306 to generate displacement.

[0049] like Figure 8As shown, the outer wall of the slider 108 is provided with a sliding rod 308, the outer wall of the sliding rod 308 is fixedly installed with a displacement gear 309, and the outer walls of the two displacement gears 309 are fixedly connected with a transmission wheel 310;

[0050] During operation, the first transmission wheel 310 controls the rotation of the first displacement gear 309, and the displacement gear 309 is meshed with the displacement rack. Therefore, the displacement gear 309 controls the first slider 108 to move forward through the sliding rod 308, and the pipeline located on the lifting support 109 also runs therewith. If the pipeline is relatively long, then when the first slider 108 moves to a certain position, the second transmission wheel 310 rotates, thereby achieving the effect of synchronous operation of the two sliders 108 until the pipeline is transported to a suitable position. Through the structures such as the transmission wheel 310 and the transmission belt 313, the movement of the slider 108 is controlled separately, thereby better controlling the movement of the pipeline.

[0051] like Figure 8 As shown, the outer wall of the cutting frame 100 is provided with an adjusting wheel 311 and a tensioning wheel 312, and a transmission belt 313 is connected between the two transmission wheels 310 and the adjusting wheel 311;

[0052] During operation, when the first slider 108 moves to a certain position, the transmission belt 313 will control the rotation of the second transmission wheel 310 through the adjusting wheel 311 and the tensioning wheel 312, thereby achieving the effect of synchronous operation of the two sliders 108 until the pipeline is transported to a suitable position, and the effect of controlling the second transmission wheel 310 is achieved through the tensioning wheel 312 and the adjusting wheel 311.

[0053] like Fig. 9 As shown, a sliding member 314 is provided on the outer wall of the slider 108, a sliding column 315 is fixedly installed on the outer wall of the cutting frame 100, and the sliding member 314 is slidably connected to the sliding column 315;

[0054] During operation, when the slider 108 is displaced, the sliding member 314 fixedly connected to the slider 108 will move along the sliding post 315 on the cutting frame 100 .

[0055] Working principle: First, the plastic pipe to be cut is moved to the lifting support 109. At this time, the first transmission wheel 310 controls the first displacement gear 309 to rotate, and the displacement gear 309 is meshed with the displacement rack. Therefore, the displacement gear 309 controls the first slider 108 to move forward through the sliding rod 308, and the pipe located on the lifting support 109 also runs accordingly. If the pipe is relatively long, then when the first slider 108 moves to a certain position, the transmission belt 313 will control the second transmission wheel 310 to rotate through the adjusting wheel 311 and the tensioning wheel 312, thereby achieving the effect of synchronous operation of the two sliders 108 until the pipe is transported to a suitable position. At this time, the telescopic cylinder 103 is started, and its output shaft controls the movement of the closing plate 102. The closing plate 102 controls the tube core probe 306 to gradually extend into the hole of the pipe through the limit rod 104. The lifting support 109 will The data controls its own height so that the probe is always at the axis of the pipeline, the motor 206 starts to control the rotation of the inner gear 207, the inner gear 207 controls the rotation of the toothed disc 204 through the rotary control 205, the toothed disc 204 rotates to drive the spiral plate 201, and the inner support member 202 gradually moves outward along the trajectory on the spiral plate 201 until it contacts the inner wall of the pipeline, at the same time, the outer gear 208 also rotates due to the engagement with the inner gear 207, the outer gear 208 is threadedly connected with the clamping member 209, so the clamping member 209 gradually moves inward to clamp and fix the pipeline together with the inner support member 202, after the fixing is completed, the pipeline will be cut, the fixing ring 305 is turned, one point of the cutting disc 304 is fixed, and the other point will slide along the limiting groove 302 on the limiting disc 301 until several cutting discs 304 slide out, at this time, the cutting assembly 300 is controlled to rotate to cut the pipeline, and finally the cut pipeline is returned to the original path for subsequent operations.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A plastic pipe cutting machine, characterized in that: It comprises a cutting frame (100), a clamping mechanism (200) and a cutting assembly (300); A fixing plate (101) is fixedly mounted on one end of the cutting frame (100); a closing plate (102) is disposed on the outer wall of the fixing plate (101); a telescopic cylinder (103) is disposed on the outer wall of the fixing plate (101); a plurality of limit rods (104) are disposed on the outer wall of the closing plate (102); a sliding groove (105) is provided at the bottom of the cutting frame (100); a top cover (106) is mounted on the top of the cutting frame (100); a fixing member (107) is fixedly mounted inside the cutting frame (100); and a displacement bar (110) is disposed inside the cutting frame (100); The inner wall of the slide groove (105) is slidably connected to a plurality of sliding blocks (108), and the outer walls of the sliding blocks (108) are fixedly connected to lifting support members (109), and the lifting support members (109) are used for transporting the pipeline; The clamping mechanism (200) comprises a spiral plate (201), the outer wall of the spiral plate (201) is slidably connected to a plurality of inner support members (202), an operating box (203) is fixedly mounted on the outer wall of the spiral plate (201), a toothed disc (204) is arranged inside the operating box (203), a rotary control unit (205) is arranged inside the operating box (203), and the teeth of the rotary control unit (205) mesh with the teeth of the toothed disc (204); A motor (206) is installed inside the top cover (106), an output shaft of the motor (206) is provided with an internal gear (207), an outer wall of the fixing member (107) is provided with an external gear (208), the internal gear (207) meshes with the external gear (208), the inner wall of the external gear (208) is threadedly connected with a clamping member (209), a plurality of fixing blocks (210) are provided on the outer wall of the fixing member (107), the inner walls of the fixing blocks (210) are each provided with a fixing column (211), one end of the fixing column (211) is fixedly connected to the external gear (208), and the other end of the fixing column (211) is fixedly connected to the outer wall of the rotary control unit (205); The outer wall of the sliding block (108) is provided with a sliding rod (308), the outer wall of the sliding rod (308) is fixedly mounted with a displacement gear (309), and the outer walls of the two displacement gears (309) are fixedly connected with a transmission wheel (310); An adjusting wheel (311) and a tensioning wheel (312) are provided on the outer wall of the cutting frame (100), and a transmission belt (313) is connected between the two transmission wheels (310) and the adjusting wheel (311).

2. The plastic pipe cutting machine according to claim 1, characterized in that: The cutting assembly (300) comprises a limiting plate (301), the outer wall of the limiting plate (301) is provided with a plurality of limiting grooves (302), the outer wall of the limiting plate (301) is fixedly mounted with a limiting ring (303), the outer wall of the limiting ring (303) is provided with a plurality of cutting blades (304), one end of the cutting blade (304) is fixedly connected to the limiting ring (303), the other end of the cutting blade (304) is slidably connected to the limiting groove (302), and the outer wall of the cutting blade (304) is provided with a fixing ring (305).

3. The plastic pipe cutting machine according to claim 2, characterized in that: The outer wall of the fixing ring (305) is provided with a tube core probe (306), and the outer wall of the limiting plate (301) is provided with a detection member (307).

4. The plastic pipe cutting machine according to claim 1, characterized in that: The limiting rod (104) is fixedly connected to the detection member (307).

5. The plastic pipe cutting machine according to claim 1, characterized in that: The outer wall of the sliding block (108) is provided with a sliding member (314), the outer wall of the cutting frame (100) is fixedly mounted with a sliding column (315), and the sliding member (314) is slidably connected to the sliding column (315).

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