Operation method of cutting and packaging device for plastic tubes used in extruders

Abstract

The invention discloses an operating method of a cutting and packaging device for a plastic pipe used in an extruder, and relates to the field of packaging devices. The cutting and packaging device comprises a plurality of groups of conveying roller assemblies, cutting devices and packaging assemblies with the same structure. The cutting assemblies move along a track assembly and cut the plastic pipe and cut the ends of two adjacent plastic pipes after being cut into shapes required by customers. The packaging assemblies have two groups and are symmetrical in structure, and are used to package the plastic pipes cut by the cutting assemblies. The invention conveys and cuts a long plastic pipe into shapes required by customers by arranging a conveying roller assembly and a cutting device, thereby solving the problems that the ends of existing plastic pipes are flat, workers are easily misaligned when winding tapes, and the axes of two adjacent plastic pipes are not coaxial, forming an angle, so that the adjacent plastic pipes after winding are bent. The arranged packaging assembly wraps and packages the plastic pipes.

Description

Technical Field

[0001] The invention relates to the field of cutting devices, in particular to an operating method of a cutting and packaging device for a plastic pipe used in an extruder. Background Art

[0002] After the existing plastic pipes are produced, they need to be cut into fixed-length plastic pipes and then packaged for delivery. When using, customers can wrap multiple plastic pipes with tape according to the length of the pipes. However, it is found that the ends of the existing plastic pipes are flat, and workers are prone to misalignment when wrapping the tape. The axes of two adjacent plastic pipes are not coaxial, forming an angle, which causes the adjacent plastic pipes to bend after wrapping. Therefore, it is necessary to produce a plastic pipe with both ends that is easy to connect and will not be misaligned (the inner diameter of one end is enlarged and the outer diameter of the other end is reduced, so that the plastic pipe can be inserted into another adjacent plastic pipe. The specific structure is as follows Fig.11 As shown), a device for making this type of plastic pipe has been developed to solve the above problems. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0004] A method for operating a cutting and packaging device for a plastic tube for an extruder, comprising a plurality of groups of conveying roller assemblies, a cutting device and a packaging assembly with the same structure, wherein the plurality of conveying roller assemblies are symmetrically distributed on both sides of the cutting device and are used to convey the plastic tube, the cutting device comprises a base, a driving assembly, a cutting assembly and a track assembly, the driving assembly is mounted on the base and is used to drive the cutting assembly to rotate, the track assembly is located inside the base, the cutting assembly moves along the track assembly and cuts the plastic tube and cuts the ends of two adjacent plastic tubes after being cut into the shape required by the customer, and the packaging assembly has two groups and is symmetrical in structure and is used to package the plastic tubes cut by the cutting assembly.

[0005] Preferably, the drive assembly has two groups and is symmetrically arranged, including a No. 1 motor installed on a base, the output shaft of the No. 1 motor is connected to gear 1, the gear 1 is meshed with a ring gear, and the ring gear is rotatably connected to the end face of the track assembly.

[0006] Preferably, the cutting assembly includes a connecting block installed on the inner side of the gear ring, and the connecting block is provided with two symmetrical support rods and a No. 2 motor. The other ends of the two support rods pass through a support frame and are covered with a spring. The upper and lower ends of the spring are respectively connected to support frame one and a stop block at the end of the support rod. The lower end of the support frame is rotatably connected to cutter one.

[0007] Preferably, a worm gear is provided at one end of the cutter, a slide groove is installed on a side of the support frame, a sliding connection end in the slide groove is a "T"-shaped slider, the upper end of the slider is rotatably connected to a roller, the roller abuts the track assembly, a rack is connected to the side of the slider, the rack is meshed with a gear column, and one end of the gear column is connected to the output shaft of the No. 2 motor.

[0008] Preferably, a rod is inserted into the lower end of the gear column, a worm is inserted into the lower end of the rod, the worm is installed in a support frame and its lower end is meshed with the worm wheel, a clearance groove is opened on the support frame, the rod moves in the clearance groove, and a cutter 2 is also provided at a lower end of the support frame.

[0009] Preferably, the track assembly includes a base plate one installed on a base, a side of the base plate one is rotatably connected to a gear ring, a second track is provided on the base plate one, and both sides of the second track are provided with a first track and a third track symmetrically arranged along the center line thereof, the second track is inscribed in the first track and the third track, and the second track is concentrically arranged with the plastic pipe at the cutting section.

[0010] Preferably, the conveying roller assembly comprises a stand, on which two conveying rollers with symmetrical structures are rotatably connected.

[0011] Preferably, the packaging assembly includes a second support frame, the second support frame is provided with an arc-shaped support platform and a cylinder, connecting rods are sleeved on both sides of the arc-shaped support platform, the ends of the two connecting rods are connected to a base plate second, the base plate second is rotatably connected to a toothed plate, the base plate second is sleeved on the outside of the threaded rod, the base plate second is provided with a threaded hole used in conjunction with the threaded rod, the threaded rod is provided with a gear three and the other end of the threaded rod is rotatably connected to the arc-shaped support platform, the toothed plate is provided with a tape roll, the arc-shaped support platform is provided with a waist-shaped hole, the top end of the telescopic rod of the cylinder is connected to the third motor, the output shaft of the third motor passes through the waist-shaped hole and is connected to the second gear, the second gear is meshed with the third gear when the output shaft of the third motor is located at the lowest position in the waist-shaped hole, and the second gear is meshed with the toothed plate when the output shaft of the third motor is located at the highest position in the waist-shaped hole.

[0012] Beneficial effects of the present invention: The present invention conveys and cuts a long plastic pipe into the shape required by the customer by setting a conveying roller assembly and a cutting device. Specifically, the first track and the third track are symmetrically arranged along the center line of the second track, and the two rollers are respectively abutted against the first track and the third track. As the cutting assembly rotates, the cutter gradually contacts the plastic pipe and cuts into the plastic pipe, and finally rotates to cut the plastic pipe. By setting the rack movement, the slider is driven to move in the slide groove until the rollers on the two cutting assemblies are both located on the inner wall of the second track, and the worm is set to rotate to drive the worm wheel to rotate The first motor starts to drive the two sets of drive components to rotate, so that the first cutter cuts and expands the inner diameter of the end of the plastic tube, and the second cutter cuts the outer wall of the end of the adjacent plastic tube, and finally obtains a plastic tube with an enlarged inner diameter at one end and a reduced outer diameter at the other end, so that the plastic tube can be inserted into another adjacent plastic tube, which solves the problem that the ends of the existing plastic tubes are flat, workers are easily misaligned when winding the tape, and the axes of the two adjacent plastic tubes are not coaxial, forming an angle, so that the adjacent plastic tubes are bent after winding;

[0013] By setting Gear 2 and Gear 1 to mesh when the output shaft of motor No. 3 is located at the lowest position in the waist-shaped hole, the threaded rod is driven to rotate, thereby driving the two base plates 2 to move toward each other, so that the ends of multiple plastic tubes are aligned, and Gear 2 and the toothed disk are set to mesh when the output shaft of motor No. 3 is located at the highest position in the waist-shaped hole, so that the toothed disk rotates, and the tape on the tape roll is used to wrap and pack the plastic tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of the present invention without installing the packaging component

[0016] Figure 3 , 4 It is a schematic diagram of the structure of the packaging component in the present invention at different angles.

[0017] Figure 5 It is a schematic diagram of the connection between the driving component and the cutting component in the present invention.

[0018] Figure 6 Schematic diagram of the structure of the track assembly at different angles in the present invention.

[0019] Figure 7 It is a schematic diagram of the structure of the cutting assembly in the present invention.

[0020] Figure 8 It is a structural schematic diagram of the support frame 1 in the present invention.

[0021] Fig. 9It is a schematic diagram of the connection between the insertion rod and the gear column in the present invention.

[0022] Fig.10 It is a schematic structural diagram of the cutter 1 in the present invention.

[0023] Fig.11 It is a schematic diagram of the structure of the plastic pipe in the present invention.

[0024] Among them, 1- conveyor roller assembly, 2- cutting device, 3- stand, 4- conveyor roller, 5- base, 6- drive assembly, 7- cutting assembly, 8- track assembly, 9- No. 1 motor, 10- gear 1, 11- gear ring, 12- connecting block, 13- support rod, 14- support frame 1, 15- spring, 16- stopper, 17- cutter 1, 18- worm gear, 19- slider, 20- roller, 21- rack, 22- gear column, 23- No. 2 Motor, 24-worm, 25-cutter 2, 26-base plate 1, 27-second track, 28-first track, 29-third track, 30-slide, 31-insert rod, 32-packing assembly, 33-support frame 2, 34-arc-shaped support platform, 35-cylinder, 36-connecting rod, 37-base plate 2, 38-toothed disc, 39-tape roll, 40-waist-shaped hole, 41-motor No. 3, 42-gear 2, 43-threaded rod, 44-gear 3. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figures 1 to 11 As shown, an operating method of a cutting and packaging device for a plastic tube for an extruder comprises a plurality of groups of conveying roller assemblies 1, a cutting device 2 and a packaging assembly 32 having the same structure, wherein the plurality of conveying roller assemblies 1 are symmetrically distributed on both sides of the cutting device 2 and are used to convey the plastic tube, the cutting device 2 comprises a base 5, a driving assembly 6, a cutting assembly 7 and a track assembly 8, the driving assembly 6 is mounted on the base 5 and is used to drive the cutting assembly 7 to rotate, the track assembly 8 is located inside the base 5, the cutting assembly 7 moves along the track assembly 8 and cuts the plastic tube and cuts the ends of the two adjacent plastic tubes after being cut into the shape required by the customer, and the packaging assembly 32 has two groups and a symmetrical structure, and is used to package the plastic tubes cut by the cutting assembly 7.

[0027] In this embodiment, the driving assembly 6 has two groups and is symmetrically arranged, including a No. 1 motor 9 installed on the base 5, the output shaft of the No. 1 motor 9 is connected to a gear 10, the gear 10 is meshed with a ring gear 11, and the ring gear 11 is rotatably connected to the end face of the track assembly 8.

[0028] In this embodiment, the cutting assembly 7 includes a connecting block 12 installed on the inner side of the gear ring 11, and two symmetrical support rods 13 and a second motor 23 are provided on the connecting block 12. The other ends of the two support rods 13 pass through a support frame 14 and are covered with a spring 15. The upper and lower ends of the spring 15 are respectively connected to the support frame 14 and a stopper 16 at the end of the support rod 13. The lower end of the support frame 14 is rotatably connected to a cutter 17.

[0029] In this embodiment, a worm gear 18 is provided at the end of the cutter 17, a slide groove 30 is installed on the side of the support frame 14, and a sliding block 19 with a "T"-shaped end is slidably connected in the slide groove 30. The upper end of the slider 19 is rotatably connected to a roller 20, and the roller 20 abuts against the track assembly 8. A rack 21 is connected to the side of the slider 19, and the rack 21 is meshed with a gear column 22. One end of the gear column 22 is connected to the output shaft of the second motor 23.

[0030] In this embodiment, the lower end of the gear column 22 is plugged with an insert rod 31, and the lower end of the insert rod 31 is plugged with a worm 24. The worm 24 is installed in a support frame 14 and its lower end is engaged with the worm wheel 18. A clearance groove is opened on the support frame 14, and the insert rod 31 moves in the clearance groove. A cutter 25 is also provided at the lower end of the support frame 14.

[0031] In this embodiment, the track assembly 8 includes a base plate 26 installed on the base 5, and the base plate 26 is rotatably connected to the gear ring 11 on the side. A second track 27 is provided on the base plate 26, and the second track 27 is provided with a first track 28 and a third track 29 symmetrically arranged along its center line on both sides. The second track 27 is inscribed in the first track 28 and the third track 29, and the second track 27 is concentrically arranged with the plastic pipe at the cutting section.

[0032] In this embodiment, the conveying roller assembly 1 includes a stand 3 , on which two conveying rollers 4 with symmetrical structures are rotatably connected.

[0033] In this embodiment, the packaging assembly 32 includes a support frame 33, and the support frame 33 is provided with an arc-shaped support platform 34 and a cylinder 35. The arc-shaped support platform 34 is sleeved with connecting rods 36 on both sides. The ends of the two connecting rods 36 are connected to a base plate 37, and the base plate 37 is rotatably connected to a toothed plate 38. The base plate 37 is sleeved outside the threaded rod 43, and a threaded hole is opened on the base plate 37 for use with the threaded rod 43. The threaded rod 43 is provided with a gear 3 44 and the other end of the threaded rod 43 is rotated. It is connected to the arc-shaped support platform 34, and a tape roll 39 is provided on the toothed disc 38. A waist-shaped hole 40 is opened on the arc-shaped support platform 34. The top end of the telescopic rod of the cylinder 35 is connected to the third motor 41. The output shaft of the third motor 41 passes through the waist-shaped hole 40 and is connected to the second gear 42. The second gear 42 and the third gear 44 are meshed when the output shaft of the third motor 41 is located at the lowest position in the waist-shaped hole 40. The second gear 42 and the toothed disc 38 are meshed when the output shaft of the third motor 41 is located at the highest position in the waist-shaped hole 40.

[0034] The initial state of the device: the rollers 20 of the two groups of cutting assemblies 7 are respectively in contact with the inner walls of the highest point of the first track 28 (referred to as point A here for the convenience of description) and the lowest point of the third track 29 (referred to as point B here for the convenience of description), and the spring 15 is in a free state, and the angle between the cutter 17 and the support frame 14 is 0°, and they are in a vertical state.

[0035] Working process and principle: When the present invention is used in a specific application, it is used in conjunction with a fixed-length measuring device and a manipulator in a workshop to facilitate fixed-length cutting and grabbing the cut plastic tubes into a packaging assembly 32 for packaging. After drying, the plastic tubes pass through a cutting device 2 and an array of conveying roller assemblies 1 symmetrically distributed on both sides. The two conveying rollers 4 on the array of conveying roller assemblies 1 convey the plastic tubes. When cutting is required,

[0036] Start the No. 1 motor 9, drive the gear 10 to rotate, thereby drive the ring gear 11 to rotate on the base plate 26, so that the two groups of cutting components 7 connected to the ring gear 11 rotate to cut the plastic pipe, specifically as follows: the connecting block 12 rotates, drives the support rod 13, the support frame 14 and the cutter 17 to rotate, and because the roller 20 rotates and is connected to the slider 19 on the support frame 14, and the rollers 20 on the two cutting components 7 respectively abut on the inner walls of the first track 28 and the third track 29, the first track 28 and the third track 29 are symmetrically arranged along the center line of the second track 27, so as the cutting component 7 rotates, it moves to the lowest point of the first track 28 (for the convenience of description, it is called point a here) and the highest point of the third track 29 (for the convenience of description, it is called point b here), and in this process, the support frame 14 is closer and closer to the center of the plastic pipe, the spring 15 is compressed, and the cutter 17 gradually contacts the plastic pipe and cuts into the plastic pipe, and finally rotates to cut the plastic pipe;

[0037] After a long plastic tube is cut into two adjacent plastic tubes, the No. 1 motor 9 stops rotating, and the No. 2 motor 23 is started to drive the gear column 22 to rotate, so that the rack 21 meshing with the gear column 22 moves, and drives the slider 19 to move in the slide groove 30 until the rollers 20 on the two cutting assemblies 7 are both located on the inner wall of the second track 27 (the rollers of the two groups of cutting assemblies 7 move from point a and point b to the lowest point and the highest point of the inner wall of the second track 27 respectively). At the same time, due to the rotation of the gear column 22, the insertion rod 31 is driven to rotate, so that the worm 24 connected to the insertion rod 31 rotates, and the worm wheel 18 is driven to rotate, so that the cutter 17 rotates until the angle with the support frame 14 is 90°, then the No. 2 motor 23 stops rotating, and the No. 1 motor 9 is started to drive the two groups of driving assemblies 6 to rotate, so that the cutter 17 cuts and expands the inner diameter of the end of the plastic tube, and the cutter 25 cuts the outer wall of the end of the adjacent plastic tube, so that the plastic tube is finally formed as follows. Fig.11 The structure shown.

[0038] The robot places the cut plastic tube on the arc-shaped support 34 of the two symmetrical packaging components 32. In the initial state, the cylinder 35 is not started, and the output shaft of the No. 3 motor 41 is located at the lowest position in the waist-shaped hole 40. The No. 3 motor 41 is started to drive the gear 2 42 to rotate. At this time, the gear 2 42 is engaged with the gear 3 44, thereby driving the threaded rod 43 to rotate, thereby driving the two base plates 2 37 to move towards each other, so that the ends of the multiple plastic tubes are flush, and one end of the tape roll 39 of the toothed disk 38 is pasted to the plastic tube, and then the cylinder 35 is started, so that the output shaft of the No. 3 motor 41 is located at the highest position in the waist-shaped hole 40. At this time, the gear 2 42 is engaged with the toothed disk 38, and the No. 3 motor 41 is started to drive the gear 2 42 to rotate, thereby causing the toothed disk 38 to rotate, so that the tape on the tape roll 39 is wrapped around the plastic tube. After winding several times, the worker cuts it with scissors and takes down the plastic tube.

[0039] The present invention conveys and cuts a long plastic pipe into the shape required by the customer by setting a conveying roller assembly 1 and a cutting device 2. Specifically, a first track 28 and a third track 29 are symmetrically arranged along the center line of the second track 27, and two rollers 21 abut against the first track 28 and the third track 29 respectively. As the cutting assembly 7 rotates, the cutter 17 gradually contacts the plastic pipe and cuts into the plastic pipe, and finally rotates to cut the plastic pipe. By setting the rack 21 to move, the slider 19 is driven to move in the slide groove 30 until the rollers 20 on the two cutting assemblies 7 are both located on the inner wall of the second track 27, and the worm 24 is set to rotate to drive the worm wheel 18 to rotate, so that the cutter 17 rotates until the angle with the support frame 14 is 90°, and then the first motor 9 is started to drive the two groups of driving assemblies 6 to rotate, so that the cutter 17 cuts and expands the inner diameter of the end of the plastic pipe, and the cutter 25 cuts the outer wall of the end of the adjacent plastic pipe, so that the plastic pipe finally forms the structure required by the customer;

[0040] By setting gear 2 42 and gear 3 44 to mesh when the output shaft of motor 3 41 is located at the lowest position in waist-shaped hole 40, threaded rod 43 is driven to rotate, thereby driving two base plates 2 37 to move toward each other, so that the ends of multiple plastic tubes are aligned, and gear 2 42 and toothed disc 38 are set to mesh when the output shaft of motor 31 is located at the highest position in waist-shaped hole 40, so that toothed disc 38 rotates, and the tape on tape roll 39 is used to wrap and pack the plastic tubes.

[0041] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. An operating method of a cutting and packaging device for a plastic tube for an extruder, characterized in that: The cutting and packaging device comprises a plurality of groups of conveying roller assemblies (1), a cutting device (2) and a packaging assembly (32) of the same structure. The plurality of groups of conveying roller assemblies (1) are symmetrically distributed on both sides of the cutting device (2) and are used to convey plastic pipes. The cutting device (2) comprises a base (5), a driving assembly (6), a cutting assembly (7) and a track assembly (8). The driving assembly (6) is mounted on the base (5) and is used to drive the cutting assembly (7) to rotate. The track assembly (8) is located inside the base (5). The cutting assembly (7) moves along the track assembly (8) and cuts the plastic pipes and cuts the ends of two adjacent plastic pipes into shapes required by customers. The packaging assembly (32) has two groups and is symmetrical in structure and is used to package the plastic pipes cut by the cutting assembly (7). The driving assembly (6) has two groups and is symmetrically arranged, including a first motor (9) mounted on a base (5), the output shaft of the first motor (9) is connected to a gear (10), the gear (10) is meshed with a ring gear (11), and the ring gear (11) is rotatably connected to the end surface of the track assembly (8); The cutting assembly (7) comprises a connecting block (12) mounted on the inner side of the gear ring (11), the connecting block (12) being provided with two symmetrical support rods (13) and a second motor (23), the other ends of the two support rods (13) passing through a support frame (14) and being sleeved with a spring (15), the upper and lower ends of the spring (15) being respectively connected to the support frame (14) and a stopper (16) at the end of the support rod (13), the lower end of the support frame (14) being rotatably connected to a cutter (17); A worm gear (18) is provided at the end of the cutter (17), a slide groove (30) is installed on the side of the support frame (14), a sliding block (19) with a "T"-shaped end is slidably connected in the slide groove (30), the upper end of the sliding block (19) is rotatably connected to a roller (20), the roller (20) abuts against a track assembly (8), a rack (21) is connected to the side of the sliding block (19), the rack (21) is meshed with a gear column (22), and one end of the gear column (22) is connected to the output shaft of the second motor (23); The lower end of the gear column (22) is plugged with an insert rod (31), the lower end of the insert rod (31) is plugged with a worm (24), the worm (24) is installed in the support frame (14) and its lower end is meshed with the worm wheel (18), the support frame (14) is provided with a clearance groove, the insert rod (31) moves in the clearance groove, and the lower end of the support frame (14) is also provided with a cutter (25); The track assembly (8) comprises a base plate (26) mounted on a base (5), the base plate (26) is rotatably connected to the gear ring (11) at its side, a second track (27) is provided on the base plate (26), a first track (28) and a third track (29) are symmetrically arranged along the center line of the second track (27) on both sides, the second track (27) is inscribed in the first track (28) and the third track (29), and the second track (27) is concentrically arranged with the plastic pipe at the cutting section; The packaging assembly (32) comprises a second support frame (33), the second support frame (33) is provided with an arc-shaped support platform (34) and a cylinder (35), the arc-shaped support platform (34) is sleeved with connecting rods (36) on both sides, the ends of the two connecting rods (36) are connected to a second base plate (37), the second base plate (37) is rotatably connected to a toothed disc (38), the second base plate (37) is sleeved on the outside of a threaded rod (43), the second base plate (37) is provided with a threaded hole for use with the threaded rod (43), the threaded rod (43) is provided with a gear three (44), and the other end of the threaded rod (43) is rotatably connected to On the arc-shaped support platform (34), a tape roll (39) is arranged on the toothed disk (38), a waist-shaped hole (40) is opened on the arc-shaped support platform (34), the top end of the telescopic rod of the cylinder (35) is connected to a third motor (41), the output shaft of the third motor (41) passes through the waist-shaped hole (40) and is connected to a second gear (42), the second gear (42) and the third gear (44) are meshed when the output shaft of the third motor (41) is located at the lowest position in the waist-shaped hole (40), and the second gear (42) and the toothed disk (38) are meshed when the output shaft of the third motor (41) is located at the highest position in the waist-shaped hole (40); The operation method of the cutting and packaging device is as follows: Step 1: After being dried, the plastic tube passes through the cutting device (2) and the array of conveying roller assemblies (1) symmetrically distributed on both sides, and the two conveying rollers (4) on the array of conveying roller assemblies (1) convey the plastic tube; Step 2: When cutting is required, start the No. 1 motor (9), the gear 1 (10) rotates to drive the gear ring (11) to rotate on the base plate 1 (26), the two groups of cutting components (7) connected to the gear ring (11) rotate, the connecting block (12) rotates, and the support rod (13), the support frame 1 (14) and the cutter 1 (17) rotate. As the roller (20) rotates, the slider (19) connected to the support frame 1 (14) and the rollers (20) on the two cutting components (7) respectively abut against the first rail. The first track (28) and the third track (29) are arranged on the inner wall of the second track (27), and the first track (28) and the third track (29) are symmetrically arranged along the center line of the second track (27). Therefore, as the cutting assembly (7) rotates, it moves to the lowest point of the first track (28) and the highest point of the third track (29), respectively. In this process, the support frame (14) is closer and closer to the center of the plastic pipe, the spring (15) is compressed, and the cutter (17) gradually contacts the plastic pipe and cuts into the plastic pipe, rotating to cut the plastic pipe; Step 3: The No. 1 motor (9) stops rotating, and the No. 2 motor (23) is started, driving the gear column (22) to rotate, and the rack (21) meshing with the gear column (22) moves, driving the slider (19) to move in the slide groove (30), until the rollers (20) on the two cutting assemblies (7) move from the lowest point of the first track (28) and the highest point of the third track (29) to the lowest point and the highest point of the inner wall of the second track (27), respectively, and at the same time the gear column (22) rotates. The first motor (23) is driven to rotate, driving the insertion rod (31) to rotate, the worm (24) connected to the insertion rod (31) to rotate, driving the worm wheel (18) to rotate, and the cutter (17) to rotate until the angle between the cutter and the support frame (14) is 90 degrees, then the second motor (23) stops rotating, the first motor (9) is started, driving the two sets of drive components (6) to rotate, the cutter (17) cuts the end of the plastic pipe to expand the inner diameter, and the cutter (25) cuts the outer wall of the end of the adjacent plastic pipe; Step 4: The manipulator places the cut plastic tube on the arc-shaped support platform (34) of the two symmetrical packaging components (32). In the initial state, the cylinder (35) is not started, and the output shaft of the third motor (41) is located at the lowest position in the waist-shaped hole (40). The third motor (41) is started to drive the second gear (42) to rotate, thereby driving the threaded rod (43) to rotate, and the two base plates (37) move towards each other. The ends of the plurality of plastic tubes are flush, and one end of the tape roll (39) of the toothed disk (38) is pasted to the plastic tube. The cylinder (35) is started again, and the output shaft of the third motor (41) is located at the highest position in the waist-shaped hole (40). At this time, the second gear (42) is meshed with the toothed disk (38). The third motor (41) is started to drive the second gear (42) to rotate, and the toothed disk (38) rotates. The tape on the tape roll (39) is wound around the plastic tube. After winding several times, the worker cuts it with scissors and takes down the plastic tube.

2. The method for operating the cutting and packaging device for plastic tubes for an extruder according to claim 1, characterized in that: The conveying roller assembly (1) comprises a stand (3), on which two conveying rollers (4) with symmetrical structures are rotatably connected.

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