Plastic pipe cutting equipment

Abstract

The invention relates to the technical field of plastic pipe processing, in particular to plastic pipe cutting equipment which comprises a cutting seat, two rectangular openings are formed in the outer wall of the top of the cutting seat, driving mechanisms are slidably mounted on the inner walls of the two rectangular openings, cutting assemblies are mounted on the outer walls of the two sides of the cutting seat, and pressing assemblies are arranged on the outer wall of the top of the cutting seat. A measuring assembly is arranged on the outer wall of one side of the cutting base, a discharging plate located below the measuring assembly is fixedly connected to the outer wall of one side of the cutting base, and a rectangular groove is formed in the cutting base. According to the plastic pipe cutting device, the defects in the prior art are overcome, the driving mechanism is arranged on the cutting base, a mounting sleeve in the driving mechanism is matched with the driving assembly, a plastic pipe is conveniently fixed in the mounting sleeve, a screw rod is arranged in the cutting base and matched with the sliding base, and therefore the mounting sleeve is conveniently driven to move on the cutting base; and therefore, the plastic pipes are conveniently driven to be fed, and the problem that existing pipe cutting equipment is low in feeding efficiency is solved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic pipe processing, in particular to a plastic pipe cutting device. Background Art

[0002] As an important part of chemical building materials, material pipes are widely accepted by users for their superior performance, hygiene, environmental protection, low consumption and other advantages. The main types include UPVC drainage pipes, UPVC water supply pipes, aluminum-plastic composite pipes, polyethylene water supply pipes, and polypropylene PPR hot water pipes.

[0003] After searching, the Chinese patent application number CN219946496U discloses a plastic pipe processing and cutting device, including a base and a cutting frame, the upper surface of the base is fixedly mounted with a scale, a first mounting frame and a second mounting frame, a motor is fixedly mounted on one surface of the first mounting frame, the output end of the motor is fixedly connected with a screw, the peripheral side of the screw is threadedly connected with a moving block, a limit rod is fixedly mounted in the second mounting frame, the peripheral side of the limit rod is slidably connected with the limit block, a cutting plate is fixedly connected between the moving block and the limit block, and a pointer is fixedly mounted on one side of the moving block. By setting the screw, the moving block, the pointer and the scale, when the screw rotates, the moving block can drive the plastic pipe to move, and by observing the scale pointed by the pointer, the cutting length of the plastic pipe can be accurately adjusted, so that the plastic pipe cutting is more accurate, and the cutting error is avoided to affect the subsequent processing. A hydraulic cylinder is fixedly mounted on the upper surface of the cutting frame, the output end of the hydraulic cylinder is fixedly connected with a mounting plate, and the bottom surface of the mounting plate is fixedly mounted with a cutting machine. A plurality of mounting grooves are provided on the upper surface of the cutting plate, a cross bar is fixedly installed in the mounting groove, a spring and a slider are installed on the peripheral side of the cross bar, a fixing plate is fixedly connected to the upper surface of the slider, and the pipe is placed between the fixing plates by arranging the spring and the fixing plate, and the pipe pushes the fixing plate to both sides, and the spring provides elastic force to the slider from both sides at the same time, so that the slider pushes the fixing plate to fix the plastic pipe, thereby facilitating the cutting of the plastic pipe.

[0004] A plastic pipe processing and cutting device in the above patent has the following shortcomings: in the above patent, the pipe is cut by a cutting machine, but the pipe needs to be manually picked up during the cutting process in order to be effectively cut. The efficiency of the cutting equipment is reduced during the manual material picking process. Summary of the invention

[0005] The purpose of the present invention is to solve or at least alleviate the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a plastic pipe cutting device, comprising a cutting seat, wherein the top outer wall of the cutting seat is provided with two rectangular openings, and the inner walls of the two rectangular openings are slidably installed with a driving mechanism, cutting components are installed on the outer walls of both sides of the cutting seat, a clamping component is provided on the top outer wall of the cutting seat, a measuring component is provided on the outer wall of one side of the cutting seat, and a blanking plate located below the measuring component is fixedly connected to the outer wall of one side of the cutting seat, a rectangular groove is provided inside the cutting seat, and two screws are rotatably connected to the inner walls of both sides of the rectangular groove, the outer walls of the two screws are screwed with the same sliding seat, the sliding seat is installed on the driving mechanism, the outer wall of one side of the cutting seat is rotatably connected to two synchronous wheels, and one end of the two synchronous wheel transmission shafts is respectively fixedly connected to the two screws, the same synchronous belt is connected between the two synchronous wheels, and the outer wall of the cutting seat on one side close to the synchronous wheel is fixedly connected to a support seat.

[0007] With the above structure, the setting of the driving mechanism facilitates the movement of the plastic pipe on the cutting seat, the setting of the cutting assembly facilitates the direct cutting of the plastic pipe, the setting of the clamping assembly facilitates the clamping and fixing of the plastic pipe to prevent the pipe from shaking during cutting, the setting of the measuring assembly facilitates the measurement of the pipe, and the two screws are conveniently rotated synchronously through the cooperation between the synchronous wheel and the synchronous belt. When the screw rotates, it is convenient to drive the driving mechanism to move through the sliding seat.

[0008] In a possible implementation, the driving mechanism includes a mounting sleeve fixedly connected to the sliding seat, and an outer wall of the mounting sleeve is provided with two symmetrically arranged driving components.

[0009] With the above structure, the installation sleeve is provided to facilitate the passing of the plastic pipe, and the drive assembly is provided to facilitate the compression and fixing of the plastic pipe.

[0010] In one possible implementation, the drive assembly includes a drive seat fixedly connected to the mounting sleeve, and the inner wall of the drive seat is fixedly connected to two sliding rods, the outer walls of the two sliding rods are slidably connected to the same clamping column, and one end of the clamping column is fixedly connected to an arc seat.

[0011] With the above structure, the two slide bars are arranged to limit the moving track of the pressing column, thereby preventing the pressing column from deviating when moving. The arc seat is arranged to compact the plastic pipe.

[0012] In a possible implementation, the measuring assembly includes a support seat 2 fixedly connected to the cutting seat, and the outer walls on both sides of the support seat 2 are fixedly connected with mounting plates, and the top outer walls of the two mounting plates are provided with multiple equidistantly distributed scale lines.

[0013] With the above structure, the second support base is provided to facilitate supporting the plastic pipe, and the scale lines on the mounting plate facilitate measuring the plastic pipe.

[0014] In a possible implementation, outer walls of the two mounting plates are slidably connected to sliding frames, and outer walls on opposite sides of the two sliding frames are fixedly connected to the same baffle.

[0015] With the above structure, the sliding frame slides on the mounting plate, thereby facilitating the adjustment of the position of the baffle plate and limiting the movement of the plastic pipe.

[0016] In one possible implementation, the clamping assembly includes a clamping seat fixedly connected to the cutting seat, and two circular grooves are provided on the outer wall of the top of the clamping seat, the inner walls of the two circular grooves are fixedly connected to cylinders, and the same clamping seat is fixedly connected to the piston rods of the two cylinders.

[0017] With the above structure, the cylinder is arranged to directly drive the pressing seat to press the plastic pipe on the clamping seat, thereby preventing the pipe from shaking during cutting.

[0018] In one possible implementation, the cutting assembly includes a gantry fixedly connected to a cutting seat, and the outer walls on opposite sides of the gantry are fixedly connected to electric slide rails, the two electric slide rails are slidably connected to the same connecting seat, the outer wall on one side of the connecting seat is rotatably connected to a cutting blade, and one end of the cutting blade transmission shaft is fixedly connected to sprocket 1, the outer wall on one side of the connecting seat is fixedly connected to a motor, and sprocket 2 is fixedly connected to the output shaft of the motor, and the same chain is connected between sprocket 1 and sprocket 2.

[0019] With the above structure, the electric slide rail is conveniently and directly used to drive the connection seat to rise and fall, and the motor is matched with the chain to directly drive the cutting blade to rotate. When the cutting blade rotates and moves downward, the plastic pipe is directly cut.

[0020] In a possible implementation, a servo motor is fixedly connected to the outer wall of the bottom of the cutting seat, and a pulley 1 is fixedly connected to the output shaft of the servo motor, one end of a screw rod is fixedly connected to a pulley 2, and the same belt is connected between pulley 2 and pulley 1.

[0021] With the above structure, the servo motor and the belt cooperate to drive the screw to rotate, and the two screws rotate synchronously through the synchronous wheel and the synchronous belt.

[0022] In a possible implementation, an electromagnet is fixedly connected to the inner wall at the top of the driving seat, and a magnet is fixedly connected to the outer wall at the top of the pressing column.

[0023] With the above structure, the electromagnet is energized to generate magnetism opposite to that of the magnet, driving the clamping column to move upward. The electromagnet generates the same magnetism as the magnet and directly drives the arc seat on the clamping column to clamp the plastic pipe.

[0024] In a possible implementation, an electric telescopic rod is fixedly connected to the inner wall of the top of the driving seat, and the output shaft of the electric telescopic rod is fixedly connected to the clamping column.

[0025] With the above structure, the electric telescopic rod is provided to directly drive the pressing column to move, thereby facilitating the pressing and fixing of the plastic pipe.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] (1) The present invention provides a driving mechanism on the cutting seat, and the cooperation between the mounting sleeve and the driving assembly in the driving mechanism facilitates fixing the plastic pipe in the mounting sleeve. The cutting seat is provided with a screw and a sliding seat, so that the mounting sleeve can be driven to move on the cutting seat, and the plastic pipe can be driven to be fed, thereby solving the problem of low feeding efficiency of the existing pipe cutting equipment. The cutting seat is provided with a clamping assembly, and the clamping assembly is provided to facilitate fixing the plastic pipe to be cut, thereby preventing the pipe from shaking during cutting.

[0028] (2) The present invention arranges a measuring component on the cutting seat. The arrangement of the measuring component facilitates the measurement of the pipe to be cut. The baffle plate facilitates the movement of the pipe. The scale lines on the mounting plate facilitate the observation of the movement of the baffle plate. The electric slide rail in the cutting component drives the connecting seat to move. When the connecting seat moves downward, it is convenient to directly drive the cutting blade to cut the plastic pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the structure of the measuring component of the present invention; Figure 4 It is a schematic diagram of the structure of the clamping assembly of the present invention; Figure 5 It is a schematic diagram of the structure of the cutting seat of the present invention; Figure 6 It is a schematic diagram of the driving mechanism structure of the present invention; Figure 7 It is a schematic diagram of the structure of the cutting assembly of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the cutting assembly of the present invention; Fig. 9This is a schematic cross-sectional view of a driving assembly according to a first embodiment of the present invention; Fig.10 It is a schematic cross-sectional structure diagram of a driving assembly according to a second embodiment of the present invention.

[0030] In the figure: 1. cutting seat; 2. driving mechanism; 3. clamping assembly; 4. cutting assembly; 5. blanking plate; 6. measuring assembly; 7. rectangular opening; 8. support seat 1; 9. synchronous wheel; 10. synchronous belt; 11. servo motor; 12. support seat 2; 13. mounting plate; 14. scale line; 15. sliding frame; 16. baffle; 17. clamping seat; 18. cylinder; 19. clamping seat; 20. rectangular groove; 21. screw; 22. sliding seat; 23. belt; 24. mounting sleeve; 25. driving assembly; 26. door frame; 27. electric slide rail; 28. connecting seat; 29. ​​motor; 30. chain; 31. cutting disc; 32. driving seat; 33. electromagnet; 34. slide rod; 35. magnet; 36. clamping column; 37. arc seat; 38. electric telescopic rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0032] See also Figure 1-9A plastic pipe cutting device comprises a cutting seat 1, wherein the top outer wall of the cutting seat 1 is provided with two rectangular openings 7, and the inner walls of the two rectangular openings 7 are slidably mounted with a driving mechanism 2, cutting components 4 are mounted on the outer walls of both sides of the cutting seat 1, a pressing component 3 is arranged on the top outer wall of the cutting seat 1, a measuring component 6 is arranged on the outer wall of one side of the cutting seat 1, and a blanking plate 5 located below the measuring component 6 is fixedly connected to the outer wall of one side of the cutting seat 1, a rectangular groove 20 is arranged inside the cutting seat 1, and two screws 21 are rotatably connected to the inner walls of both sides of the rectangular groove 20, and the outer walls of the two screws 21 are screwed with the same sliding seat 22, and the sliding seat 22 is mounted on the driving mechanism 2, and the outer wall of one side of the cutting seat 1 is rotatably connected with two synchronous wheels 9, and the two One end of the transmission shaft of the synchronous wheel 9 is fixedly connected to the two screw rods 21 respectively, and the same synchronous belt 10 is connected between the two synchronous wheels 9. The outer wall of the cutting seat 1 close to the synchronous wheel 9 is fixedly connected to a support seat 8. The setting of the driving mechanism 2 is convenient for driving the plastic pipe to move on the cutting seat 1. The setting of the cutting component 4 is convenient for directly cutting the plastic pipe. The setting of the clamping component 3 is convenient for clamping and fixing the plastic pipe to avoid shaking of the pipe during cutting. The setting of the measuring component 6 is convenient for measuring the pipe. The two screw rods 21 are conveniently rotated synchronously through the cooperation between the synchronous wheel 9 and the synchronous belt 10. When the screw 21 rotates, it is convenient to drive the driving mechanism 2 to move through the sliding seat 22.

[0033] For details, please refer to Figure 6 The driving mechanism 2 includes a mounting sleeve 24 fixedly connected to the sliding seat 22, and the outer wall of the mounting sleeve 24 is provided with two symmetrically arranged driving components 25. The setting of the mounting sleeve 24 facilitates the passage of the plastic pipe, and the setting of the driving component 25 facilitates the compression and fixing of the plastic pipe.

[0034] For details, please refer to Fig. 9 The driving assembly 25 includes a driving seat 32 fixedly connected to the mounting sleeve 24, and the inner wall of the driving seat 32 is fixedly connected to two sliding rods 34, and the outer walls of the two sliding rods 34 are slidably connected to the same clamping column 36, and one end of the clamping column 36 is fixedly connected to an arc seat 37. The setting of the two sliding rods 34 is convenient for limiting the moving trajectory of the clamping column 36 to avoid deviation of the clamping column 36 when moving, and the setting of the arc seat 37 is convenient for clamping the plastic pipe.

[0035] For details, please refer to Figure 3 The measuring assembly 6 includes a supporting seat 12 fixedly connected to the cutting seat 1, and the outer walls on both sides of the supporting seat 12 are fixedly connected with mounting plates 13, and the top outer walls of the two mounting plates 13 are provided with a plurality of equidistantly distributed scale lines 14. The setting of the supporting seat 12 facilitates the support of the plastic pipe, and the scale lines on the mounting plates 13 facilitate the measurement of the plastic pipe.

[0036] For details, please refer to Figure 3 The outer walls of the two mounting plates 13 are slidably connected with a sliding frame 15, and the outer walls on the opposite side of the two sliding frames 15 are fixedly connected with the same baffle 16. The sliding frame 15 slides on the mounting plate 13, thereby facilitating the adjustment of the position of the baffle 16 and limiting the movement of the plastic pipe.

[0037] For details, please refer to Figure 4 The clamping assembly 3 includes a clamping seat 17 fixedly connected to the cutting seat 1, and two circular grooves are provided on the outer wall of the top of the clamping seat 17, and the inner walls of the two circular grooves are fixedly connected with cylinders 18, and the piston rods of the two cylinders 18 are fixedly connected with the same clamping seat 19. The setting of the cylinder 18 facilitates the direct driving of the clamping seat 19 to clamp the plastic pipe on the clamping seat 17 to prevent the pipe from shaking during cutting.

[0038] For details, please refer to Figure 7-8 The cutting assembly 4 includes a door frame 26 fixedly connected to the cutting seat 1, and the outer walls on the opposite sides of the door frame 26 are fixedly connected with electric slide rails 27, and the same connecting seat 28 is slidably connected to the two electric slide rails 27. A cutting blade 31 is rotatably connected to the outer wall of one side of the connecting seat 28, and a sprocket 1 is fixedly connected to one end of the transmission shaft of the cutting blade 31, and a motor 29 is fixedly connected to the outer wall of one side of the connecting seat 28, and a sprocket 2 is fixedly connected to the output shaft of the motor 29, and a chain 30 is connected between the sprocket 1 and the sprocket 2. The setting of the electric slide rail 27 is convenient to directly drive the connecting seat 28 to rise and fall, and the setting of the motor 29 cooperates with the chain 30 to directly drive the cutting blade 31 to rotate, and the cutting blade 31 directly cuts the plastic pipe when it rotates and moves downward.

[0039] For details, please refer to Figure 2 and 5 A servo motor 11 is fixedly connected to the outer wall of the bottom of the cutting seat 1, and a pulley 1 is fixedly connected to the output shaft of the servo motor 11, one end of one screw 21 is fixedly connected to a pulley 2, and the same belt 23 is connected between the pulley 2 and the pulley 1. Through the cooperation between the servo motor 11 and the belt 23, the screw 21 is conveniently driven to rotate, and the two screws 21 are conveniently rotated synchronously through the synchronous wheel 9 and the synchronous belt 10.

[0040] For details, please refer to Fig. 9 An electromagnet 33 is fixedly connected to the inner wall of the top of the driving seat 32, and a magnet 35 is fixedly connected to the outer wall of the top of the clamping column 36. When the electromagnet 33 is energized, the magnetism opposite to that of the magnet 35 is generated to drive the clamping column 36 to move upward. The electromagnet 33 generates the same magnetism as that of the magnet 35 and directly drives the arc seat 37 on the clamping column 36 to clamp the plastic pipe.

[0041] Based on the first embodiment, this embodiment introduces a specific structure of the drive assembly 25 in a plastic pipe cutting device, such as Fig.10 As shown, an electric telescopic rod 38 is fixedly connected to the inner wall of the top of the driving seat 32, and the output shaft of the electric telescopic rod 38 is fixedly connected to the clamping column 36. The setting of the electric telescopic rod 38 facilitates the direct movement of the clamping column 36, thereby facilitating the compression and fixation of the plastic pipe.

[0042] Working principle: When it is used, when it is necessary to cut the plastic pipe, first put the plastic pipe through the driving mechanism 2 and place it on the support seat 1 8 and the support seat 2 12, and adjust the position of the baffle 16 according to the required pipe length. When adjusting, the sliding frame 15 is directly driven to move on the mounting plate 13. When the mounting plate 13 is adjusted to the specified position according to the scale line 14, the two sliding frames 15 are fixed on the mounting plate 13. When cutting, the motor 29 cooperates with the chain 30 to directly drive the cutting blade 31 to rotate. When the cutting blade 31 rotates, the electric slide rail 27 directly drives the connecting seat 28 to move downward. When the connecting seat 28 moves downward, the plastic pipe is directly cut off;

[0043] After one cutting is completed, the arc seat 37 on the driving assembly 25 on the mounting sleeve 24 presses the plastic pipe. After pressing, the servo motor 11 drives one of the screws 21 to rotate through the belt 23. The two screws 21 cooperate with each other through the synchronous wheel 9 and the synchronous belt 10. When convenient, the two screws 21 rotate synchronously. When the two screws 21 rotate, they directly drive the sliding seat 22 to move. When the sliding seat 22 moves toward the lower material plate 5, it directly drives the plastic pipe to move onto the support seat 2 12. When the plastic pipe contacts the baffle 16, the servo motor 11 stops, thereby completing the feeding of the plastic pipe. The electromagnet 33 in the driving assembly 25 is energized to generate the same magnetism as the magnet 35. According to the principle of like charges repel each other, the arc seat 37 on the pressing column 36 is directly pushed to press the plastic pipe, or the electric telescopic rod 38 in the driving seat 32 directly drives the arc seat 37 on the pressing column 36 to press the pipe.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A plastic pipe cutting device, comprising a cutting seat (1), characterized in that: The top outer wall of the cutting seat (1) is provided with two rectangular openings (7), and the inner walls of the two rectangular openings (7) are slidably mounted with a driving mechanism (2), the outer walls of both sides of the cutting seat (1) are mounted with cutting components (4), the top outer wall of the cutting seat (1) is provided with a clamping component (3), the outer wall of one side of the cutting seat (1) is provided with a measuring component (6), the outer wall of one side of the cutting seat (1) is fixedly connected with a blanking plate (5) located below the measuring component (6), the interior of the cutting seat (1) is provided with a rectangular groove (20), and the rectangular groove (20) The inner walls on both sides are rotatably connected to two screw rods (21), the outer walls of the two screw rods (21) are screwed to the same sliding seat (22), and the sliding seat (22) is installed on the driving mechanism (2); the outer wall on one side of the cutting seat (1) is rotatably connected to two synchronous wheels (9), and one end of the transmission shaft of the two synchronous wheels (9) is respectively fixedly connected to the two screw rods (21), and the same synchronous belt (10) is connected between the two synchronous wheels (9); the outer wall on one side of the cutting seat (1) close to the synchronous wheel (9) is fixedly connected to a support seat (8).

2. The plastic pipe cutting device according to claim 1, characterized in that: The driving mechanism (2) comprises a mounting sleeve (24) fixedly connected to a sliding seat (22), and the outer wall of the mounting sleeve (24) is provided with two symmetrically arranged driving components (25).

3. The plastic pipe cutting device according to claim 2, characterized in that: The driving assembly (25) comprises a driving seat (32) fixedly connected to the mounting sleeve (24), and the inner wall of the driving seat (32) is fixedly connected to two sliding rods (34), the outer walls of the two sliding rods (34) are slidably connected to the same clamping column (36), and one end of the clamping column (36) is fixedly connected to an arc seat (37).

4. The plastic pipe cutting device according to claim 3, characterized in that: The measuring assembly (6) comprises a second support seat (12) fixedly connected to the cutting seat (1), and the outer walls on both sides of the second support seat (12) are fixedly connected to mounting plates (13), and the top outer walls of the two mounting plates (13) are provided with a plurality of equidistantly distributed scale lines (14).

5. The plastic pipe cutting device according to claim 4, characterized in that: The outer walls of the two mounting plates (13) are both slidably connected to a sliding frame (15), and the outer walls of the two sliding frames (15) on opposite sides are fixedly connected to the same baffle (16).

6. The plastic pipe cutting device according to claim 5, characterized in that: The clamping assembly (3) comprises a clamping seat (17) fixedly connected to the cutting seat (1), and the top outer wall of the clamping seat (17) is provided with two circular grooves, the inner walls of the two circular grooves are fixedly connected to a cylinder (18), and the piston rods of the two cylinders (18) are fixedly connected to the same clamping seat (19).

7. The plastic pipe cutting device according to claim 6, characterized in that: The cutting assembly (4) comprises a door frame (26) fixedly connected to the cutting seat (1), and the outer walls on opposite sides of the door frame (26) are fixedly connected to electric slide rails (27), the two electric slide rails (27) are slidably connected to the same connecting seat (28), one side outer wall of the connecting seat (28) is rotatably connected to a cutting blade (31), and one end of the transmission shaft of the cutting blade (31) is fixedly connected to sprocket one, one side outer wall of the connecting seat (28) is fixedly connected to a motor (29), and the output shaft of the motor (29) is fixedly connected to sprocket two, and the same chain (30) is connected between sprocket one and sprocket two.

8. The plastic pipe cutting device according to claim 7, characterized in that: The outer wall of the bottom of the cutting seat (1) is fixedly connected to a servo motor (11), and a pulley 1 is fixedly connected to the output shaft of the servo motor (11), one end of one of the screw rods (21) is fixedly connected to a pulley 2, and a same belt (23) is connected between the pulley 2 and the pulley 1.

9. The plastic pipe cutting device according to claim 8, characterized in that: An electromagnet (33) is fixedly connected to the inner wall at the top of the driving seat (32), and a magnet (35) is fixedly connected to the outer wall at the top of the pressing column (36).

10. The plastic pipe cutting device according to claim 8, characterized in that: An electric telescopic rod (38) is fixedly connected to the inner wall of the top of the driving seat (32), and the output shaft of the electric telescopic rod (38) is fixedly connected to the pressing column (36).

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