A polyethylene heat shrinkable film production shaping device

Abstract

The application relates to the technical field of heat-shrinkable film setting devices, and discloses a degradable polyethylene heat-shrinkable film production setting device, which comprises a setting box, one side of the setting box is fixedly provided with a heat-shrinkable film conveying frame, the inner side of the setting box is provided with two groups of auxiliary rollers, the heat-shrinkable film conveying frame and the inner sides of the two groups of auxiliary rollers are provided with heat-shrinkable film pieces, the inner side of the setting box is provided with an adjusting assembly, the upper side of the adjusting assembly is provided with a setting assembly, the adjusting assembly comprises four groups of fixed rods which are fixedly arranged on the inner wall of the setting box, and transmission rods are arranged between the upper two groups of the four groups of fixed rods. The degradable polyethylene heat-shrinkable film production setting device is used in cooperation, heat-shrinkable film pieces are blown by rotation, the heat-shrinkable film pieces are uniformly set, the distance between the two groups of tension rollers is adjusted, and the heat-shrinkable film pieces with different thicknesses are adapted.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of heat-shrinkable film setting devices, in particular to a degradable polyethylene heat-shrinkable film production setting device. BACKGROUND

[0002] The production of the degradable polyethylene heat-shrinkable film is a combination of'material modification' and'traditional heat-shrinkable film process', and the core lies in balancing the degradability, mechanical property and heat-shrinkability through formula design. With the maturity of the technology, the future has broad replacement space in the packaging field.

[0003] A kind of heat-shrinkable film production is used to a multi-directional exchange type setting drying device, including: receiving and releasing disc, to receive and release heat-shrinkable film;Drying positioning mechanism, to the heat-shrinkable film received and released by receiving and releasing disc to make drying positioning process;Cooling mechanism, to make cooling process to the heat-shrinkable film after drying positioning of drying positioning mechanism;The drying positioning mechanism includes: drying positioning box, is arranged at the output position of receiving disc;Hollow rectangular frame, is arranged in the interior of drying positioning box close to one end of receiving and releasing disc, hollow rectangular frame is provided with rectangular through hole for heat-shrinkable film to pass through;Drying nozzle, has a pair;Setting table;Lifting frame, its bottom movably provided with lower pressing roller that can be in contact with the upper surface of heat-shrinkable film, the equipment can automatically dry, set and cool heat-shrinkable film, and can evenly dry heat-shrinkable film when drying, improve drying uniformity and the efficiency of drying positioning.

[0004] However, the above-mentioned device still has defects, such as two groups of left and right moving fans arranged above and below, which can blow the heat-shrinkable film. The blowing position of the film can appear strong and weak areas. When the film is blown, the moving fan produces unstable airflow, which can easily cause the film to swing during the conveying process. SUMMARY

[0005] The main purpose of the present application is to provide a degradable polyethylene heat-shrinkable film production setting device, which can effectively solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0007] The utility model provides a kind of degrading polyethylene heat shrinkable film production shaping device, including shaping box, one side of the shaping box is fixedly installed with heat shrinkable film conveying frame, the inside of the shaping box is provided with two groups of auxiliary rollers, the heat shrinkable film conveying frame is provided with heat shrinkable film piece inside two groups of auxiliary rollers, the inside of the shaping box is installed with adjusting assembly, the upper side of the adjusting assembly is provided with shaping assembly, the adjusting assembly includes four groups of fixed rods fixedly installed on the inner wall of shaping box, transmission rod is arranged between the upper side of two groups in four groups of fixed rods, the outer side of transmission rod is provided with opposite two sections of threaded portion, the outer side of the upper and lower two groups in four groups of fixed rods is movably sleeved with two groups of mounting seat, the middle position of the upper side of two groups of mounting seat is fixedly provided with threaded sleeve frame, two groups of mounting seat close to heat shrinkable film conveying frame in four groups of mounting seat are fixedly installed with front airflow duct, another two groups of mounting seat in four groups of mounting seat are fixedly installed with rear airflow duct, first motor is fixedly installed on the inner wall of the front side of shaping box, and the outer side of the rotating shaft of first motor and transmission rod is fixedly provided with first gear.

[0008] Preferably, the front airflow duct and the rear airflow duct are fixedly installed with fixed seats at the front and rear ends, respectively, V-shaped frames are fixedly arranged between the corresponding two groups of fixed seats on the front and rear sides of the front airflow duct and the rear airflow duct, square plates are fixedly arranged on the lower sides of the V-shaped frames, movable openings are formed in the inner sides of the square plates, sliding blocks are movably arranged in the inner sides of the movable openings, circular sleeves are fixedly arranged on the upper ends of the sliding blocks, threaded rods are movably arranged in the inner sides of the circular sleeves, shaft rods are rotatably arranged on the inner sides of the square plates and the sliding blocks, tension rollers are fixedly arranged on the outer sides of the two groups of shaft rods, second gears are fixedly arranged on the outer sides of the two groups of shaft rods, synchronous wheels are fixedly installed on the outer sides of the lower group of the two groups of shaft rods, the transmission rod and the two groups of fixed seats, and synchronous belts are sleeved on the outer sides of the four groups of synchronous wheels.

[0009] Preferably, the shaping assembly includes a shaping fan fixedly arranged at the front end of the shaping box, a connecting cylinder fixedly arranged on the rear side of the shaping fan, an extension connecting pipe fixedly arranged between the connecting cylinder and the upper side of one side of the front airflow duct, a plurality of air inlets formed in the inner sides of the front airflow duct and the rear airflow duct, five groups of inclined arc guide pieces fixedly arranged on the inner sides of the arc-shaped positions of the front airflow duct and the rear airflow duct, longitudinal guide pieces fixedly arranged at one end of the corresponding inclined arc guide pieces on the upper and lower sides of the front airflow duct and the rear airflow duct, and connecting openings formed in the inner sides of the front airflow duct at positions corresponding to the longitudinal guide pieces.

[0010] Preferably, the transmission rod is rotatably arranged on the inner wall of the shaping box, sliding grooves are formed in the upper and lower sides of the transmission rod, the threaded portion arranged on the outer side of the transmission rod is threadedly connected with the threaded sleeve frame, the rear airflow duct is inserted into the inner side of the front airflow duct, and the two first gears are arranged in meshing relationship with each other.

[0011] Preferably, the V-shaped frame corresponds to the inside of the front airflow pipe and the rear airflow pipe near the middle position, the sliding block is slidingly arranged in the movable port, and the threaded rod is in threaded connection with the V-shaped frame.

[0012] Preferably, the two groups of tension rollers are provided with spiral threads on the outside, are clamped at the edge of the heat shrinkable film, and the two groups of second gears are in meshing arrangement, one group of the four groups of synchronous wheels is in ratchet structure and is slidingly arranged on the outside of the sliding groove of the transmission rod, and the group of the four groups of synchronous wheels provided with the ratchet structure is in rotating arrangement with the threaded sleeve frame.

[0013] Preferably, the telescopic connecting pipe is in communication with the inside of the front airflow pipe and the rear airflow pipe, the air outlets are inclined to one side, the inclined arc guide pieces and the longitudinal guide pieces arranged on the inside of the front airflow pipe and the rear airflow pipe are connected together in a spiral state, and the longitudinal guide piece on the rear airflow pipe is inserted into the connecting port.

[0014] Preferably, the height of the inclined arc guide pieces and the longitudinal guide pieces in the spiral structure is from low to high, and the two groups of longitudinal guide pieces are staggered.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] 1、 By starting the shaping fan, the generated airflow is introduced into the front airflow pipe and the rear airflow pipe through the connecting cylinder and the telescopic connecting pipe, and the inclined air outlets arranged on the two pipes guide the airflow to blow on the surface of the heat shrinkable film transported in the middle, and the elliptical structure of the front airflow pipe and the rear airflow pipe enables the internal airflow to circulate and flow, and the blown airflow rotates to blow the heat shrinkable film, uniformly shaping the heat shrinkable film, and the insertion of the front airflow pipe and the rear airflow pipe and the staggered insertion of the two groups of connecting ports into the connecting port facilitate the subsequent adjustment of the distance between the front airflow pipe and the rear airflow pipe, thereby adapting to heat shrinkable films of different widths, and in addition, the spiral splicing structure and the different height of the several groups of inclined arc guide pieces and longitudinal guide pieces effectively discharge the internal airflow for shaping to one side, reduce the mixing of the subsequent discharged airflow, generate more turbulence, and cause greater fluctuation influence on the heat shrinkable film and temperature change during shaping.

[0017] 2、 Through the first motor drive connected first gear rotation, drive meshing first gear drive transmission rod rotation, and the connected synchronous wheel is ratchet structure, can not be driven to rotate, while two groups of thread sleeve frame drive front airflow duct, rear airflow duct and both sides of the tension roller to each other, so as to adapt to the width of different specifications of heat shrinkable film, improve the overall practicability, and through the first motor drive first gear, transmission rod reverse rotation, so that the ratchet structure connected with a group of synchronous wheel rotation, with synchronous belt drive the lower two groups of tension roller rotation work.

[0018] 3、 Through the synchronous belt drive last downside a group of synchronous wheel rotation, driven by the rotating shaft, tension roller connected with rotation, cooperate with the meshing of two groups of second gear, make two groups of tension roller work in opposite direction rotation, both sides of the tension roller to the edge position of the conveying heat shrinkable film to push, pull, realize the tensile stretching work, in the inhibition of jitter and protection of heat shrinkable film performance between the balance, maintain the stability of the film surface, and through the rotating screw thread connection of threaded rod drive sliding block in the activity port sliding, realize the distance adjustment between the two groups of tension roller, adapt to the different thickness of heat shrinkable film. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is overall structure schematic view of the degeneration polyethylene heat shrinkable film production setting device of the application;

[0020] Figure 2 It is inside partial structure schematic view of the degeneration polyethylene heat shrinkable film production setting device of the application;

[0021] Figure 3 It is adjusting assembly and setting assembly structure schematic view of the degeneration polyethylene heat shrinkable film production setting device of the application;

[0022] Figure 4 It is adjusting assembly and setting assembly partial structure schematic view of the degeneration polyethylene heat shrinkable film production setting device of the application;

[0023] Figure 5 It is adjusting assembly partial structure schematic view of the degeneration polyethylene heat shrinkable film production setting device of the application Figure 1 ;

[0024] Figure 6 It is A part enlarged structure schematic view of the degeneration polyethylene heat shrinkable film production setting device of the application Figure 5 ;

[0025] Figure 7 It is adjusting assembly partial structure schematic view of the degeneration polyethylene heat shrinkable film production setting device of the application Figure 2 ;

[0026] Figure 8 It is a structure schematic view of a shaping assembly of a polyethylene degradation heat shrinkable film production shaping device according to the present application;

[0027] Figure 9 It is a structure schematic view of a shaping assembly of a polyethylene degradation heat shrinkable film production shaping device according to the present application; Figure 8 It is a structure schematic view of a shaping assembly of a polyethylene degradation heat shrinkable film production shaping device according to the present application;

[0028] In the figure: 1, shaping box; 2, heat shrinkable film conveying frame; 3, auxiliary roller; 4, heat shrinkable film piece; 5, adjusting assembly; 51, fixed rod; 52, transmission rod; 53, threaded part; 54, mounting seat; 55, threaded sleeve frame; 56, front airflow pipeline; 57, rear airflow pipeline; 58, first motor; 59, first gear; 510, fixed seat; 511, V-shaped frame; 512, square plate; 513, movable port; 514, sliding block; 515, round sleeve; 516, threaded rod; 517, shaft rod; 518, tensioning roller; 519, second gear; 520, synchronous wheel; 521, synchronous belt; 6, shaping assembly; 61, shaping fan; 62, connecting cylinder; 63, telescopic connecting pipe; 64, air port; 65, inclined arc guide piece; 66, longitudinal guide piece; 67, connecting port. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments of the present application.

[0030] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the relative positional relationship of the orientation or position, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0031] Please refer to Figures 1-9The application provides a polyethylene heat shrinkable film production shaping device, which comprises a shaping box 1, a heat shrinkable film conveying frame 2 is fixedly installed on one side of the shaping box 1, two groups of auxiliary rollers 3 are arranged on the inner side of the shaping box 1, a heat shrinkable film sheet 4 is arranged on the inner side of the heat shrinkable film conveying frame 2 and the two groups of auxiliary rollers 3, an adjusting assembly 5 is installed on the inner side of the shaping box 1, a shaping assembly 6 is arranged on the upper side of the adjusting assembly 5, the adjusting assembly 5 comprises four groups of fixed rods 51 which are fixedly installed on the inner wall of the shaping box 1, a transmission rod 52 is arranged between the upper two groups of the four groups of fixed rods 51, opposite two threaded portions 53 are arranged on the outer side of the transmission rod 52, two groups of mounting seats 54 are movably sleeved on the outer sides of the upper and lower two groups of the four groups of fixed rods 51, a threaded sleeve frame 55 is fixedly arranged at the middle position of the upper group of the two groups of mounting seats 54, a front airflow pipe 56 is fixedly installed between the two groups of mounting seats 54 which are close to the heat shrinkable film conveying frame 2, a rear airflow pipe 57 is fixedly installed between the other two groups of mounting seats 54, a first motor 58 is fixedly installed on the inner wall of the front side of the shaping box 1, and first gears 59 are fixedly arranged on the outer sides of the rotating shaft of the first motor 58 and the transmission rod 52.

[0032] The transmission rod 52 is rotatably arranged on the inner wall of the shaping box 1, sliding grooves are formed in the upper and lower sides of the transmission rod 52, the threaded sleeve frame 55 is threadedly connected with the threaded portion 53 arranged on the outer side of the transmission rod 52, the rear airflow pipe 57 is inserted into the inner side of the front airflow pipe 56, and the two groups of first gears 59 are arranged in meshing mode.

[0033] The first gear 59 connected with the first motor 58 is rotated to drive the meshing first gear 59 to rotate the transmission rod 52, the synchronous wheel 520 connected with the transmission rod 52 is a ratchet structure and cannot be driven to rotate, the two groups of threaded sleeve frames 55 drive the front airflow pipe 56, the rear airflow pipe 57 and the two groups of tensioning rollers 518 to move close to each other, so that the width of the heat shrinkable film sheet 4 of different specifications is adapted, and the practicability of the whole is improved, the first gear 59 and the transmission rod 52 are reversely rotated by the first motor 58, so that the group of synchronous wheels 520 connected with the ratchet structure is rotated, and the synchronous belt 521 drives the two groups of tensioning rollers 518 on the lower side to rotate.

[0034] The front airflow pipe 56 and the rear airflow pipe 57 are fixedly installed with fixed seats 510 at front and rear ends, and the front airflow pipe 56 and the rear airflow pipe 57 are fixedly provided with V-shaped frames 511 between the corresponding two groups of fixed seats 510 at front and rear sides, and the V-shaped frames 511 are fixedly provided with square plates 512 at lower sides, and the square plates 512 are provided with movable openings 513 at inner sides, and the movable openings 513 are movably provided with sliding blocks 514 at inner sides, and the sliding blocks 514 are fixedly provided with circular sleeves 515 at upper ends, and the circular sleeves 515 are movably provided with threaded rods 516 at inner sides, and the square plates 512 and the sliding blocks 514 are rotatably provided with shaft rods 517 at lower sides and inner sides, and the outer sides of the two groups of shaft rods 517 are fixedly provided with tensioning rollers 518, and the outer sides of the two groups of shaft rods 517 are fixedly provided with second gears 519, and the outer sides of the two groups of shaft rods 517 are fixedly installed with synchronous wheels 520 and the outer sides of the four groups of synchronous wheels 520 are sleeved with a synchronous belt 521.

[0035] The V-shaped frames 511 are arranged at positions close to the middle positions in the front airflow pipe 56 and the rear airflow pipe 57, the sliding blocks 514 are slidingly arranged in the movable openings 513, the threaded rods 516 are in threaded connection with the V-shaped frames 511, the outer sides of the two groups of tensioning rollers 518 are provided with helical threads, the two groups of tensioning rollers 518 are clamped at the edge positions of the heat-shrinkable film sheet 4, the two groups of second gears 519 are in meshing arrangement, one group of the four groups of synchronous wheels 520 arranged on the transmission rod 52 is in ratchet wheel structure and is slidingly arranged outside the sliding groove of the transmission rod 52, and the group of the four groups of synchronous wheels 520 arranged in the ratchet wheel structure is in rotational arrangement with the threaded sleeve frame 55.

[0036] The last group of synchronous wheels 520 at the lower side is driven to rotate by the synchronous belt 521, the shaft rods 517 and the tensioning rollers 518 connected with the synchronous wheels 520 are driven to rotate, the two groups of tensioning rollers 518 are made to rotate in opposite directions by the meshing arrangement of the two groups of second gears 519, the tensioning rollers 518 on the two sides are made to push and pull the heat-shrinkable film sheet 4 to the edge position, the stretching work of tension is realized, the balance between inhibiting shaking and protecting the performance of the heat-shrinkable film sheet 4 is achieved, the film surface is maintained stable, the sliding block 514 is made to slide in the movable opening 513 by the threaded rod 516 in rotational threaded connection, the distance adjustment between the two groups of tensioning rollers 518 is realized, and the heat-shrinkable film sheet 4 with different thicknesses is adapted.

[0037] The shaping assembly 6 comprises a shaping fan 61 fixedly arranged at the front end of the shaping box 1, a connecting cylinder 62 fixedly arranged at the rear side of the shaping fan 61, an extension connecting pipe 63 fixedly arranged between the connecting cylinder 62 and the upper side of one side of the front airflow pipe 56, a plurality of air outlets 64 arranged on the inner sides of the front airflow pipe 56 and the rear airflow pipe 57, five groups of inclined arc guide pieces 65 fixedly arranged on the inner sides of the arc-shaped positions of the front airflow pipe 56 and the rear airflow pipe 57, longitudinal guide pieces 66 fixedly arranged at one end of the corresponding inclined arc guide pieces 65 on the upper and lower sides of the front airflow pipe 56 and the rear airflow pipe 57, and connecting ports 67 arranged on the positions corresponding to the longitudinal guide pieces 66 on the inner sides of the front airflow pipe 56.

[0038] The extension connecting pipe 63 is communicated with the inner sides of the front airflow pipe 56 and the rear airflow pipe 57, the plurality of groups of air outlets 64 are arranged to be inclined toward one side, the inclined arc guide pieces 65 and the longitudinal guide pieces 66 arranged on the inner sides of the front airflow pipe 56 and the rear airflow pipe 57 are connected together to present a spiral state, the longitudinal guide pieces 66 on the rear airflow pipe 57 are inserted into the connecting ports 67, the height of the plurality of groups of inclined arc guide pieces 65 and the longitudinal guide pieces 66 presenting a spiral structure is from low to high, and the two groups of longitudinal guide pieces 66 are arranged in a staggered manner.

[0039] By starting the shaping fan 61, the generated airflow is introduced into the front airflow pipe 56 and the rear airflow pipe 57 through the connecting cylinder 62 and the extension connecting pipe 63, the inclined plurality of groups of air outlets 64 arranged on the front airflow pipe 56 and the rear airflow pipe 57 guide the airflow to blow onto the surface of the heat-shrinkable film sheet 4 conveyed in the middle, the elliptical structure of the front airflow pipe 56 and the rear airflow pipe 57 can make the internal airflow circulate and flow, and the blown airflow rotates to blow the heat-shrinkable film sheet 4, which is uniformly shaped, the front airflow pipe 56 and the rear airflow pipe 57 are inserted and arranged, and the two groups of connecting ports 67 are inserted into the connecting ports 67 in a staggered manner, which facilitates the adjustment of the distance between the front airflow pipe 56 and the rear airflow pipe 57, thereby adapting to heat-shrinkable film sheets 4 of different widths, in addition, the spiral splicing structure and the different height arrangement of the plurality of groups of inclined arc guide pieces 65 and the longitudinal guide pieces 66 effectively discharge the internal airflow for shaping to one side, reduce the mutual mixing of the subsequent discharged airflow, generate more turbulent flow, and cause greater fluctuation influence on the heat-shrinkable film sheet 4 and temperature change during shaping.

[0040] Working principle: in use, by starting the shaping fan 61, the generated airflow is introduced into the front airflow duct 56 and the rear airflow duct 57 through the connecting barrel 62 and the telescopic connecting pipe 63, and the airflow is discharged to the surface of the heat-shrinkable film 4 being conveyed in the middle through the inclined air outlets 64 arranged on the two airflow ducts, and the oval structure of the front airflow duct 56 and the rear airflow duct 57 can make the internal airflow circulate and flow, and the blown airflow rotates the heat-shrinkable film 4, uniformly shaping the heat-shrinkable film 4, and the front airflow duct 56 and the rear airflow duct 57 are inserted and arranged, and the two groups of connecting ports 67 are inserted into the connecting ports 67, which facilitates the adjustment of the distance between the front airflow duct 56 and the rear airflow duct 57, so as to adapt to heat-shrinkable films 4 of different widths, and through the spiral splicing structure and the different height arrangement of the several groups of inclined arc guide pieces 65 and the longitudinal guide pieces 66, the internal airflow that is first discharged for shaping is effectively discharged to one side, the mixing with the subsequent discharged airflow is reduced, more turbulence is generated, and the heat-shrinkable film 4 is greatly affected by the fluctuation and the temperature change during shaping; the first gear 59 connected with the first motor 58 is rotated to drive the meshing first gear 59 to rotate the transmission rod 52, the synchronous wheel 520 connected with the transmission rod 52 is a ratchet structure and cannot be driven to rotate, and the two groups of threaded sleeve frames 55 drive the front airflow duct 56, the rear airflow duct 57 and the two side tension rollers 518 to move closer to each other, so as to adapt to the widths of heat-shrinkable films 4 of different specifications and improve the practicability of the whole; the first gear 59 and the transmission rod 52 are reversely rotated by the first motor 58, so that the group of synchronous wheels 520 connected with the ratchet structure rotates, and the synchronous belt 521 drives the two groups of tension rollers 518 below to rotate; the last group of synchronous wheels 520 below is rotated by the synchronous belt 521, the shaft 517 and the tension roller 518 connected with the synchronous wheel 520 are rotated, the two groups of second gears 519 are engaged and arranged, and the two groups of tension rollers 518 are oppositely rotated, the two side tension rollers 518 push and pull the heat-shrinkable film 4 being conveyed to the edge position, realize the tension stretching work, balance between suppressing shaking and protecting the performance of the heat-shrinkable film 4, maintain the stability of the film surface, and the threaded rod 516 connected with the rotating screw drives the sliding block 514 to slide in the movable port 513, so as to adjust the distance between the two groups of tension rollers 518 and adapt to the different thicknesses of the heat-shrinkable film 4.

[0041] The shaping box 1, the heat-shrinkable film conveying frame 2, the auxiliary roller 3, the heat-shrinkable film 4, the first motor 58 and the shaping fan 61 in the application belong to the common knowledge in the field, and their working principles are known technologies, and the models are selected according to actual use, so they will not be explained in detail.

[0042] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A device for producing and shaping degradable polyethylene heat shrinkable film, comprising a shaping box (1), characterized in that: A heat shrink film conveying frame (2) is fixedly installed on one side of the shaping box (1), two groups of auxiliary rollers (3) are provided on the inner side of the shaping box (1), and heat shrink film sheets (4) are provided on the inner side of the heat shrink film conveying frame (2) and the two groups of auxiliary rollers (3). An adjustment component (5) is installed on the inner side of the shaping box (1), and a shaping component (6) is provided on the upper side of the adjustment component (5). The adjustment component (5) includes four groups of fixed rods (51) fixedly installed on the inner wall of the shaping box (1), a transmission rod (52) is provided between the upper two groups of the four groups of fixed rods (51), and two opposite threaded sections (53) are provided on the outer side of the transmission rod (52). Two groups of mounting seats (54) are movably sleeved on the outer sides of the upper and lower groups of the fixed rod (51) in the group, and a threaded sleeve (55) is fixedly provided at the middle position of the upper group of the two groups of mounting seats (54). A front airflow duct (56) is fixedly installed between the two groups of mounting seats (54) close to the heat shrink film conveying frame (2) in the four groups of mounting seats (54), and a rear airflow duct (57) is fixedly installed between the other two groups of mounting seats (54) in the four groups of mounting seats (54). A first motor (58) is fixedly installed on the inner wall of the front side of the shaping box (1), and a first gear (59) is fixedly provided on the rotating shaft of the first motor (58) and the outer side of the transmission rod (52); The shaping component (6) includes a shaping fan (61) fixedly arranged at the front end of the shaping box (1), a connecting tube (62) fixedly arranged at the rear side of the shaping fan (61), a telescopic connecting tube (63) fixedly arranged between the connecting tube (62) and the upper side of the front airflow duct (56), a plurality of groups of air outlets (64) are provided on the inner sides of the front airflow duct (56) and the rear airflow duct (57), five groups of oblique arc guide pieces (65) are fixedly provided on the inner sides of the arc positions of the front airflow duct (56) and the rear airflow duct (57), longitudinal guide pieces (66) are fixedly provided on the upper and lower sides of the front airflow duct (56) and the rear airflow duct (57) at one end corresponding to the oblique arc guide pieces (65), and a connecting port (67) is provided on the inner side of the front airflow duct (56) at a position corresponding to the longitudinal guide piece (66); The transmission rod (52) is rotatably arranged on the inner wall of the shaping box (1), and a sliding groove is provided on the upper and lower sides of the transmission rod (52). The threaded sleeve (55) is threadedly connected to the threaded portion (53) provided on the outer side of the transmission rod (52). The rear airflow duct (57) is inserted into the inner side of the front airflow duct (56), and the two sets of the first gears (59) are meshed with each other. The telescopic connecting pipe (63) is communicated with the inner sides of the front airflow duct (56) and the rear airflow duct (57); a plurality of groups of the air outlets (64) are arranged tilted toward one side; the oblique arc guide pieces (65) and the longitudinal guide pieces (66) arranged on the inner sides of the front airflow duct (56) and the rear airflow duct (57) are connected to each other in a spiral state; the longitudinal guide piece (66) on the rear airflow duct (57) is inserted into the connecting port (67); The plurality of groups of the oblique arc guide pieces (65) and the longitudinal guide pieces (66) present a spiral structure with the height from low to high, and the two groups of the longitudinal guide pieces (66) are staggered. The front airflow duct (56) and the rear airflow duct (57) are elliptical structures.

2. The device for producing and shaping degradable polyethylene heat shrinkable film according to claim 1, characterized in that: The front and rear ends of the front airflow duct (56) and the rear airflow duct (57) are fixedly installed with fixing seats (510), and a V-shaped frame (511) is fixedly provided between the two sets of fixing seats (510) corresponding to the front and rear sides of the front airflow duct (56) and the rear airflow duct (57). A square plate (512) is fixedly provided on the lower side of the V-shaped frame (511), and a movable opening (513) is provided on the inner side of the square plate (512). A slider (514) is movably provided on the inner side of the movable opening (513), and a round sleeve (515) is fixedly provided on the upper end of the slider (514). A threaded rod (516) is movably provided on the inner side of the circular sleeve (515), a shaft (517) is rotatably provided on the lower side of the square plate (512) and the inner side of the slider (514), a tensioning roller (518) is fixedly provided on the outer side of the two groups of shaft rods (517), a second gear (519) is fixedly provided on the outer side of the two groups of shaft rods (517), a synchronous wheel (520) is fixedly installed on the lower side of the two groups of shaft rods (517), the two groups of fixed seats (510) and the outer side of the transmission rod (52), and a synchronous belt (521) is sleeved on the outer side of the four groups of synchronous wheels (520).

3. The device for producing and shaping degradable polyethylene heat shrinkable film according to claim 2, characterized in that: The V-shaped frame (511) corresponds to a position near the middle of the inner side of the front airflow duct (56) and the rear airflow duct (57), the slider (514) is slidably arranged in the movable opening (513), and the threaded rod (516) is threadedly connected to the V-shaped frame (511).

4. The device for producing and shaping degradable polyethylene heat shrinkable film according to claim 2, characterized in that: The outer sides of the two groups of tensioning rollers (518) are both provided with spiral patterns. The two groups of tensioning rollers (518) are clamped at the edge of the heat shrinkable film (4) as a position. The two groups of the second gears (519) are meshed with each other. One of the four groups of synchronous wheels (520) is provided on the transmission rod (52) and is a ratchet structure and is slidably provided on the outer side of the sliding groove of the transmission rod (52). One of the four groups of synchronous wheels (520) provided with a ratchet structure is rotatably provided with the threaded sleeve (55).

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