CN115609663A

CN115609663A - Operation method of plastic pipe cutting and packing device for plastic extruding machine

Info

Publication number: CN115609663A
Application number: CN202211261224.9A
Authority: CN
Inventors: 徐巧红; 黎绍韦
Original assignee: Wuhu Futian Electronic Technology Co ltd
Current assignee: Wuhu Futian Electronic Technology Co ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2023-01-17
Also published as: CN113580243B; CN113580243A

Abstract

The invention discloses an operation method of a plastic pipe cutting and packing device for an extrusion molding machine, which relates to the field of packing devices, wherein the cutting and packing device comprises a plurality of groups of conveying roller assemblies, a cutting device and a packing assembly, the conveying roller assemblies, the cutting device and the packing assembly are identical in structure, the cutting assembly moves along a track assembly and cuts a plastic pipe, the two cut adjacent plastic pipe ends are cut into shapes required by customers, the packing assembly is provided with two groups of conveying roller assemblies and is symmetrical in structure and used for packing the plastic pipe cut by the cutting assembly.

Description

Operation method of plastic pipe cutting and packing device for plastic extruding machine

Technical Field

The invention relates to the field of cutting devices, in particular to an operation method of a plastic pipe cutting and packing device for an extrusion molding machine.

Background

After the existing plastic pipe is produced, the plastic pipe needs to be cut into a plastic pipe with a fixed length, the plastic pipe is packaged and delivered, a customer can wind a plurality of plastic pipes with adhesive tapes according to the length requirement of a pipeline when in use, the end part of the existing plastic pipe is found to be flat, workers are easy to misplace when winding the adhesive tapes, and the axes of two adjacent plastic pipes are not coaxial to form an included angle, so that the adjacent plastic pipes after winding are bent, therefore, the plastic pipe (one end of which has an enlarged inner diameter and a reduced outer diameter, and the plastic pipe can be sleeved into the other adjacent plastic pipe, and the specific structure is shown in figure 11) with two ends easy to connect and can not be misplaced is produced, and equipment for manufacturing the plastic pipe in the form is researched to solve the problem.

Disclosure of Invention

In order to solve the technical problems, the invention provides the following technical scheme:

the utility model provides an operation method of cutting packing apparatus of plastic tubing for extrusion molding machine, includes multiunit conveying roller subassembly, cutting device and the packing subassembly that the structure is the same, multiunit conveying roller subassembly symmetric distribution in cutting device both sides and be used for carrying the plastic tubing, cutting device includes base, drive assembly, cutting component and track subassembly, drive assembly installs on the base and is used for driving the cutting component and rotates, the track subassembly is located the base, the cutting component along track subassembly motion and to the plastic tubing cut and will cut two adjacent plastic tubing end portions after cutting into the shape that the customer needs, the packing subassembly has two sets ofly and structural symmetry for the plastic tubing packing after cutting the subassembly cuts.

Preferably, the driving assembly is provided with two groups and is symmetrically arranged, the driving assembly comprises a first motor arranged on the base, an output shaft of the first motor is connected with a first gear, the first gear is meshed with a gear ring, and the gear ring is rotatably connected to the end face of the track assembly.

Preferably, the cutting assembly comprises a connecting block arranged on the inner side of the gear ring, the connecting block is provided with two symmetrical supporting rods and a second motor, the other ends of the two supporting rods penetrate through the supporting frame and are sleeved with a spring, the upper end and the lower end of the spring are respectively connected with a first supporting frame stop block and a second supporting rod stop block, and the lower end of the supporting frame is rotatably connected with a first cutter.

Preferably, a turbine is arranged at one end of the cutter, a sliding groove is formed in one side face of the support frame, the end portion of the sliding connection in the sliding groove is a T-shaped sliding block, the upper end of the sliding block is rotatably connected with a roller, the roller abuts against the track assembly, a rack is connected to the side face of the sliding block, the rack is meshed with a gear column, and one end of the gear column is connected to an output shaft of a second motor.

Preferably, the lower end of the gear column is inserted with an insertion rod, the lower end of the insertion rod is inserted with a worm, the worm is installed in the first support frame, the lower end of the worm is meshed with the turbine, a yielding groove is formed in the first support frame, the insertion rod moves in the yielding groove, and a second cutter is further arranged at the lower end of the first support frame.

Preferably, the track subassembly is including installing the basal disc on the base, the basal disc side is rotated and is connected the ring gear, be equipped with the second track on the basal disc, the orbital both sides of second are equipped with first track and the third track that sets up along its central line symmetry, the inscribe of second track is in first track and third track, the second track sets up with the plastic tubing is concentric in cutting section department.

Preferably, the conveying roller assembly comprises a vertical frame, and two conveying rollers with symmetrical structures are rotatably connected to the vertical frame.

Preferably, the packing subassembly includes support frame two, be equipped with arc cushion cap and cylinder on the support frame two, the connecting rod has been cup jointed, two to arc cushion cap both sides connecting rod end-to-end connection have the base plate, rotate on the base plate and connect the fluted disc, the base plate cup joints outside the threaded rod, it has the screw hole that uses with the threaded rod cooperation to open on the base plate, it rotates to connect on the arc cushion cap to be equipped with three and the threaded rod other end of gear on the threaded rod, be equipped with the sticky tape book on the fluted disc, it has waist type hole to open on the arc cushion cap, no. three motors are connected on the telescopic link top of cylinder, the output shaft of No. three motors passes waist type hole and is connected with gear two, gear two meshes when the output shaft of No. three motors is located the downthehole extreme lower position of waist type with the gear three, gear two meshes when the output shaft of No. three motors is located waist type hole extreme position with the fluted disc.

The invention has the beneficial effects that: the invention conveys and cuts a long plastic pipe into a shape required by a customer by arranging a conveying roller assembly and a cutting device, specifically, a first rail and a third rail are symmetrically arranged along the central line of the second rail, two rollers are respectively abutted against the first rail and the third rail, a cutter I gradually contacts the plastic pipe and cuts into the plastic pipe along with the rotation of the cutting assembly, and finally rotates to cut off the plastic pipe;

through setting up gear two and gear one meshing when the output shaft of No. three motors is located the downthehole extreme position of waist type, drive the threaded rod and rotate to drive two basal discs relative motion, make the tip parallel and level of a plurality of plastic tubs, set up gear two and the meshing of fluted disc when the output shaft of No. three motors is located the downthehole extreme position of waist type, thereby make the fluted disc rotate, the sticky tape on the sticky tape book twines the packing to the plastic tubing.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the construction of the unmounted baling assembly of the present invention

Fig. 3 and 4 are schematic structural diagrams of the packing assembly in different angles.

FIG. 5 is a schematic view of the connection between the driving assembly and the cutting assembly according to the present invention.

FIG. 6 is a schematic view of the track assembly of the present invention in different angles.

FIG. 7 is a schematic view of a cutting assembly according to the present invention.

Fig. 8 is a schematic structural view of the first support frame of the present invention.

FIG. 9 is a schematic view of the connection between the plunger and the gear post of the present invention.

Fig. 10 is a schematic structural diagram of a first cutter in the invention.

Fig. 11 is a schematic structural view of the plastic tube of the present invention.

The cutting device comprises a conveying roller assembly 1, a cutting device 2, a vertical frame 3, a conveying roller 4, a base 5, a driving assembly 6, a cutting assembly 7, a rail assembly 8, a motor 9, a gear I10, a gear I11, a gear ring 12, a connecting block 13, a supporting rod 14, a supporting frame I support 15, a spring 16, a stop 17, a cutter I18, a turbine 19, a sliding block 20, a roller 21, a rack 21, a gear column 22, a motor 23, a worm 24, a cutter II 26, a base plate 27, a second rail 28, a first rail 29, a third rail 30, a sliding groove 31, a inserting rod 31, a packing assembly 32, a support frame II 33, an arc-shaped bearing platform 34, an air cylinder 35, a connecting rod 36, a base plate 37, a fluted disc 38, a tape roll 39, a kidney-shaped hole 40, a motor 41, a motor III 42, a gear II 43, a threaded rod 44 and a gear III.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 11, an operation method of a cutting and baling device for plastic tubes used in an extrusion molding machine includes a plurality of sets of conveying roller assemblies 1, a cutting device 2, and a baling assembly 32 having the same structure, the plurality of sets of conveying roller assemblies 1 are symmetrically distributed on both sides of the cutting device 2 and are used for conveying plastic tubes, the cutting device 2 includes a base 5, a driving assembly 6, a cutting assembly 7, and a rail assembly 8, the driving assembly 6 is mounted on the base 5 and is used for driving the cutting assembly 7 to rotate, the rail assembly 8 is located inside the base 5, the cutting assembly 7 moves along the rail assembly 8 and cuts the plastic tubes and cuts the ends of two adjacent plastic tubes into shapes required by customers, and the baling assembly 32 has two sets and is symmetrical in structure and is used for baling the plastic tubes cut by the cutting assembly 7.

In this embodiment, the driving assemblies 6 are arranged in two groups and symmetrically, and include a first motor 9 installed on the base 5, an output shaft of the first motor 9 is connected with a first gear 10, the first gear 10 is engaged with a gear ring 11, and the gear ring 11 is rotatably connected to an end face of the track assembly 8.

In this embodiment, the cutting assembly 7 includes a connecting block 12 installed inside the gear ring 11, two support rods 13 and a second motor 23 which are symmetrical in structure are arranged on the connecting block 12, the other ends of the two support rods 13 penetrate through a first support frame 14 and are sleeved with a spring 15, the upper end and the lower end of the spring 15 are respectively connected with the first support frame 14 and a stop 16 at the tail end of the support rod 13, and the lower end of the first support frame 14 is rotatably connected with a first cutter 17.

In this embodiment, a turbine 18 is arranged at the end of the first cutting knife 17, a sliding groove 30 is arranged on the side surface of the first support frame 14, a sliding block 19 with a T-shaped end is slidably connected in the sliding groove 30, the upper end of the sliding block 19 is rotatably connected with a roller 20, the roller 20 abuts against the track assembly 8, a rack 21 is connected to the side surface 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 an output shaft of a second motor 23.

In this embodiment, the lower end of the gear column 22 is inserted with an insertion rod 31, the lower end of the insertion rod 31 is inserted with a worm 24, the worm 24 is installed in the first support frame 14, the lower end of the worm 24 is meshed with the turbine 18, the first support frame 14 is provided with a yielding groove, the insertion rod 31 is movable in the yielding groove, and the lower end of the first support frame 14 is further provided with a second cutter 25.

In this embodiment, the track assembly 8 includes a base plate 26 installed on the base 5, the base plate 26 is connected with the gear ring 11 in a side rotating manner, a second track 27 is provided on the base plate 26, a first track 28 and a third track 29 symmetrically arranged along a central line of the second track 27 are provided on two sides of the second track 27, the second track 27 is inscribed in the first track 28 and the third track 29, and the second track 27 and the plastic pipe are concentrically arranged at a cutting section.

In this embodiment, the conveying roller assembly 1 includes a vertical frame 3, and two conveying rollers 4 with symmetrical structures are rotatably connected to the vertical frame 3.

In this embodiment, packing subassembly 32 includes two 33 of support frames, be equipped with arc cushion cap 34 and cylinder 35 on two 33 of support frames, connecting rod 36 has been cup jointed to arc cushion cap 34 both sides, two connecting rod 36 end-to-end connection have a base plate 37, rotate on the base plate 37 and connect fluted disc 38, base plate 37 cup joints outside threaded rod 43, it has the screw hole that uses with threaded rod 43 cooperation to open on the base plate 37, be equipped with three 44 gears and the other end rotation of threaded rod 43 on threaded rod 43 connects on arc cushion cap 34, be equipped with adhesive tape book 39 on fluted disc 38, it has kidney type hole 40 to open on arc cushion cap 34, no. three motors 41 are connected on the telescopic link top of cylinder 35, no. three motors 41's output shaft passes kidney type hole 40 and is connected with two 42 gears, meshing when two 42 gears and three 44 output shaft of No. three motors 41 are located kidney type hole 40 the lowest position, meshing when two 42 gears 38 are located the highest kidney type hole 40 highest position at the output shaft of No. three motors 41.

Initial state of the device: the rollers 20 of the two cutting assemblies 7 respectively abut against the inner walls of the highest position (for convenience of description, referred to as point a) of the first track 28 and the lowest position (for convenience of description, referred to as point B) of the third track 29, the spring 15 is in a free state, the first cutter 17 and the first support frame 14 form an included angle of 0 degree, and the first cutter is in a vertical state.

The working process and principle are as follows: when the invention is applied specifically, the invention is used together with a fixed-length measuring device and a manipulator in a workshop, so that fixed-length cutting and grabbing of the cut plastic pipe into a packing assembly 32 for packing are conveniently realized, the plastic pipe passes through a cutting device 2 and a plurality of sets of conveying roller assemblies 1 symmetrically distributed on two sides after being dried, the plastic pipe is conveyed by two conveying rollers 4 on the sets of conveying roller assemblies 1, when the plastic pipe needs to be cut,

start a motor 9, drive a gear 10 and rotate to drive ring gear 11 and rotate on basal disc 26, thereby make two sets of cutting assembly 7 that are connected with ring gear 11 rotate and cut off the plastic tubing, specific as follows: the connecting block 12 rotates to drive the supporting rod 13, the first supporting frame 14 and the first cutter 17 to rotate, and because the rollers 20 rotate to be connected to the sliders 19 on the first supporting frame 14, and the rollers 20 on the two cutting assemblies 7 are respectively abutted to the inner walls of the first rail 28 and the third rail 29, and the first rail 28 and the third rail 29 are symmetrically arranged along the central line of the second rail 27, the first supporting frame 14 moves to the lowest position (for convenience of description, referred to as point a) of the first rail 28 and the highest position (for convenience of description, referred to as point b) of the third rail 29 respectively along with the rotation of the cutting assemblies 7, and in the process, the distance from the first supporting frame 14 to the center of the plastic pipe is gradually closer, the spring 15 is compressed, the first cutter 17 gradually contacts and cuts into the plastic pipe, and finally the plastic pipe is cut off by rotating;

after a long plastic pipe is cut into two adjacent plastic pipes, the first motor 9 stops rotating, the second motor 23 is started to drive the gear post 22 to rotate, so that the rack 21 meshed with the gear post 22 moves, the sliding block 19 is driven to move in the sliding groove 30 until the rollers 20 on the two cutting assemblies 7 are positioned on the inner wall of the second rail 27 (the rollers of the two cutting assemblies 7 respectively move from the point a and the point b to the lowest point and the highest point of the inner wall of the second rail 27), meanwhile, the gear post 22 rotates to drive the insert rod 31 to rotate, so that the worm 24 connected with the insert rod 31 rotates to drive the turbine 18 to rotate, the second motor 23 stops rotating after the first cutter 17 rotates until the included angle between the first cutter 17 and the first support frame 14 is 90 degrees, the first motor 9 is started to drive the two driving assemblies 7 to rotate, so that the first cutter 17 performs the action of cutting and diameter expanding on the end part of the plastic pipe, and the second cutter 25 performs the action of cutting on the outer wall of the end part of the adjacent plastic pipe, and finally the structure as shown in fig. 11 is formed.

The mechanical arm puts the cut plastic pipe into the arc-shaped bearing platform 34 of the two symmetrical packing assemblies 32, when the mechanical arm is in an initial state, the air cylinder 35 is not started, the output shaft of the third motor 41 is located at the lowest position in the kidney-shaped hole 40, the third motor 41 is started to drive the second gear 42 to rotate, at the moment, the second gear 42 is meshed with the third gear 44 to drive the threaded rod 43 to rotate, so that the two base discs 37 are driven to move oppositely, the end parts of the plurality of plastic pipes are parallel and level, one end of the adhesive tape roll 39 of the fluted disc 38 is pasted onto the plastic pipe, the air cylinder 35 is started again to enable the output shaft of the third motor 41 to be located at the highest position in the kidney-shaped hole 40, at the moment, the second gear 42 is meshed with the fluted disc 38, the third motor 41 is started to drive the second gear 42 to rotate, so that the fluted disc 38 rotates, the adhesive tape on the adhesive tape roll 39 winds the plastic pipe, and after the winding is performed for a plurality of circles, a worker cuts the plastic pipe with scissors and then takes down the plastic pipe.

According to the invention, a long plastic pipe is conveyed and cut into a shape required by a customer by arranging the conveying roller assembly 1 and the cutting device 2, specifically, a first rail 28 and a third rail 29 are symmetrically arranged along the central line of a second rail 27, two rollers 21 are respectively abutted against the first rail 28 and the third rail 29, a first cutter 17 gradually contacts the plastic pipe and cuts into the plastic pipe along with the rotation of the cutting assembly 7, the plastic pipe is finally cut off by rotating, a sliding block 19 is driven to move in a sliding groove 30 by arranging a rack 21 until rollers 20 on the two cutting assemblies 7 are both positioned on the inner wall of the second rail 27, a worm 24 is arranged to rotate and drive a turbine 18 to rotate, after the first cutter 17 rotates until an included angle of 90 degrees with a first support frame 14, a first motor 9 is started to drive two groups of driving assemblies 7 to rotate, so that the first cutter 17 performs cutting and internal diameter expanding actions on the end part of the plastic pipe, and a second cutter 25 performs cutting actions on the outer wall of the end part of the adjacent plastic pipe, and finally the plastic pipe forms a structure required by the customer;

through setting up the meshing of second gear 42 and third gear 44 when the output shaft of No. three motor 41 is located waist type hole 40 extreme lower position, drive threaded rod 43 and rotate to drive two basal discs 37 and move in opposite directions, make the tip parallel and level of a plurality of plastic tubings, set up second gear 42 and fluted disc 38 and mesh when the output shaft of No. three motor 41 is located waist type hole 40 extreme lower position, thereby make fluted disc 38 rotate, the sticky tape on the sticky tape book 39 twines the packing to the plastic tubing.

It will be appreciated by those skilled in the art that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or are equivalent to the scope of the invention are intended to be embraced therein.

Claims

1. The operation method of the plastic pipe cutting and packing device for the plastic extruding machine is characterized in that the cutting and packing device comprises a plurality of groups of conveying roller assemblies (1), a cutting device (2) and a packing assembly (32) which are identical in structure, the plurality of groups of conveying roller assemblies (1) are symmetrically distributed on two sides of the cutting device (2) and used for conveying 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 used for driving 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 the two adjacent cut plastic pipes into shapes required by customers, and the packing assembly (32) is provided with two groups and symmetrical in structure and used for packing the cut plastic pipes of the cutting assembly (7);

the two groups of driving components (6) are symmetrically arranged and comprise a first motor (9) arranged on the base (5), an output shaft of the first motor (9) is connected with a first gear (10), the first gear (10) is meshed with a gear ring (11), and the gear ring (11) is rotatably connected to the end face of the track component (8);

the cutting assembly (7) comprises a connecting block (12) arranged on the inner side of the gear ring (11), two support rods (13) and a second motor (23) which are symmetrical in structure are arranged on the connecting block (12), the other ends of the two support rods (13) penetrate through the first support frame (14) and are sleeved with springs (15), the upper end and the lower end of each spring (15) are respectively connected with the first support frame (14) and a stop block (16) at the tail end of the corresponding support rod (13), and the lower end of the first support frame (14) is rotatably connected with a first cutter (17);

a turbine (18) is arranged at the end part of the first cutter (17), a sliding groove (30) is arranged on the side surface of the first support frame (14), a sliding block (19) with a T-shaped end part is connected in the sliding groove (30) in a sliding manner, the upper end of the sliding block (19) is rotatably connected with a roller (20), the roller (20) is abutted against the track assembly (8), a rack (21) is connected to the side surface 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 an output shaft of a second motor (23);

an insert rod (31) is inserted at the lower end of the gear column (22), a worm (24) is inserted at the lower end of the insert rod (31), the worm (24) is installed in the first support frame (14) and the lower end of the worm is meshed with the turbine (18), a yielding groove is formed in the first support frame (14), the insert rod (31) is movably arranged in the yielding groove, and a second cutter (25) is further arranged at the lower end of the first support frame (14);

the operation method of the cutting and packing device is as follows:

the method comprises the following steps: the plastic pipe after being dried passes through a cutting device (2) and a plurality of groups of conveying roller assemblies (1) symmetrically distributed on two sides, and the plastic pipe is conveyed by two conveying rollers (4) on the plurality of groups of conveying roller assemblies (1);

step two: when cutting is needed, a first motor (9) is started, a first gear (10) rotates to drive a gear ring (11) to rotate on a base disc (26), two groups of cutting assemblies (7) connected with the gear ring (11) rotate, a connecting block (12) rotates to drive a supporting rod (13), a first support frame (14) and a first cutter (17) to rotate, and as rollers (20) rotate to be connected with sliders (19) on the first support frame (14) and the rollers (20) on the two cutting assemblies (7) are respectively abutted to the inner walls of a first rail (28) and a third rail (29), the first rail (28) and the third rail (29) are symmetrically arranged along the central line of the second rail (27), the first rail (28) and the third rail (29) move to the lowest position of the first rail (28) and the highest position of the third rail (29) respectively along with the rotation of the cutting assemblies (7), and in the process, the first support frame (14) is closer to the center of the plastic pipe, a spring (15) is compressed, and the first cutter (17) gradually contacts and cuts into the plastic pipe;

step three: the first motor (9) stops rotating, the second motor (23) is started to drive the gear column (22) to rotate, the rack (21) meshed with the gear column (22) moves to drive the sliding block (19) to move in the sliding groove (30) until the rollers (20) on the two cutting assemblies (7) respectively move to the lowest point and the highest point of the inner wall of the second rail (27) from the lowest point and the highest point of the first rail (28) and the third rail (29), the gear column (22) rotates to drive the inserted rod (31) to rotate, the worm (24) connected with the inserted rod (31) rotates to drive the turbine (18) to rotate, the first motor (17) rotates until the included angle between the first motor (14) and the support frame is 90 degrees, the second motor (23) stops rotating, the first motor (9) is started to drive the two groups of driving assemblies (7) to rotate, the first cutter (17) performs cutting and inner diameter expanding actions on the end part of the plastic pipe, and the second motor (25) performs cutting actions on the outer wall of the adjacent end part;

step four: the mechanical arm puts the cut plastic pipe into an arc-shaped bearing platform (34) of two symmetrical packing assemblies (32), when the mechanical arm is in an initial state, an air cylinder (35) is not started, an output shaft of a third motor (41) is located at the lowest position in a kidney-shaped hole (40), the third motor (41) is started to drive a second gear (42) to rotate, so that a threaded rod (43) is driven to rotate, two base plates (37) move oppositely, the end portions of the plastic pipes are flush, one end of an adhesive tape roll (39) of a fluted disc (38) is adhered to the plastic pipe, the air cylinder (35) is started, an output shaft of the third motor (41) is located at the highest position in the kidney-shaped hole (40), at the moment, the second gear (42) is meshed with the fluted disc (38), the third motor (41) is started to drive the second gear (42) to rotate, the fluted disc (38) rotates, the adhesive tape on the adhesive tape roll (39) winds the plastic pipe, a worker winds the plastic pipe, and takes down the plastic pipe after the plastic pipe is cut short by using scissors after being wound for a plurality of circles.

2. A method of operating a device for cutting and wrapping plastic tubes for extrusion machines, as claimed in claim 1, wherein: track subassembly (8) is including installing basal disc (26) on base (5), basal disc (26) side is rotated and is connected ring gear (11), be equipped with second track (27) on basal disc (26), the both sides of second track (27) are equipped with first track (28) and third track (29) along its central line symmetry setting, second track (27) inscribe in first track (28) and third track (29), second track (27) and plastic tubing are in cutting section department concentric setting.

3. A method of operating a device for cutting and wrapping plastic tubes for extrusion machines, as claimed in claim 1, wherein: the conveying roller assembly (1) comprises a vertical frame (3), and two conveying rollers (4) with symmetrical structures are rotatably connected to the vertical frame (3).

4. A method of operating a plastic pipe cutting and packing apparatus for an extrusion molding machine according to claim 1, wherein: the packing component (32) comprises a second support frame (33), an arc-shaped bearing platform (34) and an air cylinder (35) are arranged on the second support frame (33), connecting rods (36) are sleeved on two sides of the arc-shaped bearing platform (34), the tail ends of the two connecting rods (36) are connected with a base plate (37), the base plate (37) is rotatably connected with a fluted disc (38), the base plate (37) is sleeved outside the threaded rod (43), the base plate (37) is provided with a threaded hole matched with the threaded rod (43), a gear III (44) is arranged on the threaded rod (43), the other end of the threaded rod (43) is rotationally connected to the arc-shaped bearing platform (34), an adhesive tape roll (39) is arranged on the fluted disc (38), a waist-shaped hole (40) is arranged on the arc-shaped bearing platform (34), the top end of the telescopic rod of the cylinder (35) is connected with a third motor (41), an output shaft of the third motor (41) penetrates through the kidney-shaped hole (40) and is connected with a second gear (42), the second gear (42) is meshed with the third gear (44) when the output shaft of the third motor (41) is positioned at the lowest position in the kidney-shaped hole (40), and the second gear (42) is meshed with the fluted disc (38) when the output shaft of the third motor (41) is positioned at the highest position in the kidney-shaped hole (40).