Degradable polyethylene heat shrink film producing and shaping device

Abstract

The invention relates to the technical field of thermal shrinkage film shaping devices, and discloses a degradable polyethylene thermal shrinkage film production shaping device which comprises a shaping box, a thermal shrinkage film conveying frame is fixedly installed on one side of the shaping box, and two sets of auxiliary rollers are arranged on the inner side of the shaping box. A heat shrinkage film sheet is arranged on the inner sides of the heat shrinkage film conveying frame and the two sets of auxiliary rollers, an adjusting assembly is installed on the inner side of the shaping box, a shaping assembly is arranged on the upper side of the adjusting assembly, and the adjusting assembly comprises four sets of fixing rods fixedly installed on the inner wall of the shaping box; and a transmission rod is arranged between the upper two groups of the four groups of fixing rods. According to the production shaping device for the degradable polyethylene heat shrinkage film, through overall cooperative use, the rotary blowing type heat shrinkage film is uniformly shaped, the distance between the two sets of tensioning rollers is adjusted, and the production shaping device is adaptive to different thicknesses of the heat shrinkage film.

Description

Technical Field

[0001] The invention relates to the technical field of heat shrinkable film shaping devices, in particular to a production shaping device for degradable polyethylene heat shrinkable films. Background Art

[0002] The production of degradable polyethylene heat-shrink film combines material modification with traditional heat-shrink film processing. The key lies in formula design, which balances degradability, mechanical properties, and heat shrinkage. As the technology matures, there is broad potential for future replacement in the packaging field.

[0003] For example, the existing patent publication number is: CN113370431A, which is a multi-directional exchange shaping and drying device for heat shrink film production, including: a receiving and unloading disk for receiving and unloading heat shrink film; a drying positioning mechanism for performing a drying and positioning process on the heat shrink film received and unloaded by the receiving and unloading disk; a cooling mechanism for performing a cooling process on the heat shrink film after being dried and positioned by the drying positioning mechanism; the drying positioning mechanism includes: a drying positioning box, which is arranged at the output position of the receiving disk; a hollow rectangular frame, which is arranged inside the drying positioning box near one end of the receiving and unloading disk, the hollow rectangular frame is provided with a rectangular through-hole for the heat shrink film to pass through; a pair of drying nozzles; a shaping table; a lifting frame, the bottom of which is movably provided with a lower pressure roller that can contact the upper surface of the heat shrink film, the equipment can automatically dry, shape and cool the heat shrink film, and can evenly dry the heat shrink film during drying, thereby improving the drying uniformity and the efficiency of drying positioning.

[0004] However, the above device still has disadvantages. For example, by setting two groups of fans that move left and right above and below, there will be strong and weak areas at the position where the heat shrink film is blown. When blowing the film, the moving fans generate unstable airflow, which can easily cause the film to swing during the transportation process. Summary of the Invention

[0005] The main purpose of the present invention is to provide a production and shaping device for degradable polyethylene heat shrinkable film, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A device for producing and shaping degradable polyethylene heat shrinkable film, comprising a shaping box, a heat shrinkable film conveyor frame fixedly mounted on one side of the shaping box, two sets of auxiliary rollers arranged on the inner side of the shaping box, heat shrinkable film sheets arranged on the inner sides of the heat shrinkable film conveyor frame and the two sets of auxiliary rollers, an adjustment component mounted on the inner side of the shaping box, a shaping component arranged on the upper side of the adjustment component, the adjustment component comprising four sets of fixed rods fixedly mounted on the inner wall of the shaping box, a transmission rod arranged between the upper two sets of the four sets of fixed rods, and a transmission rod arranged on the outer side of the transmission rod. Two opposite threaded portions are provided, and two groups of mounting seats are movably sleeved on the outer sides of the upper and lower groups of the four groups of fixed rods, and a threaded sleeve is fixedly provided at the middle position of the upper group of the two groups of mounting seats. A front airflow duct is fixedly installed between the two groups of mounting seats close to the heat shrink film conveying rack among the four groups of mounting seats, and a rear airflow duct is fixedly installed between the other two groups of mounting seats among the four groups of mounting seats. A first motor is fixedly installed on the inner wall of the front side of the shaping box, and a first gear is fixedly provided on the rotating shaft of the first motor and the outer side of the transmission rod.

[0008] Preferably, the front and rear ends of the front airflow duct and the rear airflow duct are fixedly installed with fixed seats, and a V-shaped frame is fixedly installed between the two groups of fixed seats corresponding to the front and rear sides of the front airflow duct and the rear airflow duct, and a square plate is fixedly installed on the lower side of the V-frame, and a movable opening is opened on the inner side of the square plate, and a slider is movably provided on the inner side of the movable opening, and a round sleeve is fixedly provided on the upper end of the slider, and a threaded rod is movably provided on the inner side of the round sleeve, and shaft rods are rotatably provided on the lower side of the square plate and the inner side of the slider, and tensioning rollers are fixedly provided on the outer sides of the two groups of shaft rods, and second gears are fixedly provided on the outer sides of the two groups of shaft rods, and synchronous wheels are fixedly installed on the lower side group of the two groups of shaft rods, the two groups of fixed seats and the outer sides of the transmission rods, and the outer sides of the four groups of synchronous wheels are covered with synchronous belts.

[0009] Preferably, the shaping component includes a shaping fan fixedly arranged at the front end of the shaping box, a connecting cylinder is fixedly arranged on the rear side of the shaping fan, a telescopic connecting tube is fixedly arranged between the connecting cylinder and the upper side of the front airflow duct, a plurality of air outlets are opened on the inner sides of the front airflow duct and the rear airflow duct, five groups of oblique arc guide plates are fixedly arranged on the inner sides of the arc-shaped positions of the front airflow duct and the rear airflow duct, longitudinal guide plates are fixedly arranged on one end of the oblique arc guide plates corresponding to the upper and lower sides of the front airflow duct and the rear airflow duct, and connecting ports are opened at the positions corresponding to the longitudinal guide plates on the inner side of the front airflow duct.

[0010] Preferably, the transmission rod is rotatably arranged on the inner wall of the forming box, sliding grooves are provided on the upper and lower sides of the transmission rod, the threaded sleeve is threadedly connected to the threaded part arranged on the outer side of the transmission rod, the rear airflow duct is inserted into the inner position of the front airflow duct, and the two groups of the first gears are meshed with each other.

[0011] Preferably, the V-shaped frame corresponds to the inner side of the front airflow duct and the rear airflow duct near the middle position, the slider is slidably arranged in the movable opening, and the threaded rod is threadedly connected to the V-shaped frame.

[0012] Preferably, spiral patterns are provided on the outer sides of the two groups of tensioning rollers, the two groups of tensioning rollers are clamped at the edge of the heat shrinkable film, the two groups of second gears are meshed with each other, one of the four groups of synchronous wheels arranged on the transmission rod is a ratchet structure and is slidably arranged on the outside of the sliding groove of the transmission rod, and one of the four groups of synchronous wheels with a ratchet structure is rotatably arranged with the threaded sleeve.

[0013] Preferably, the telescopic connecting pipe is communicated with the inner sides of the front airflow duct and the rear airflow duct, and several groups of the air outlets are arranged tilted toward one side. The oblique arc guide pieces and longitudinal guide pieces arranged on the inner sides of the front airflow duct and the rear airflow duct are connected to each other in a spiral state, and the longitudinal guide piece on the rear airflow duct is inserted into the connecting port.

[0014] Preferably, the plurality of groups of the oblique arc guide pieces and the longitudinal guide pieces present a spiral structure with heights from low to high, and the two groups of the longitudinal guide pieces are staggered.

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

[0016] 1. By starting the shaping fan, the generated airflow is introduced into the front airflow duct and the rear airflow duct through the connecting tube and the telescopic connecting tube, and several groups of inclined air outlets are set on the two to guide the airflow to the surface of the heat shrinkable membrane transported in the middle. The elliptical structure of the front airflow duct and the rear airflow duct can make the internal airflow circulate, and the blown airflow rotates and blows the heat shrinkable membrane to evenly shape it. The front airflow duct and the rear airflow duct are inserted into the setting and the two groups of connecting ports are staggered into the connecting port, which facilitates the subsequent adjustment of the distance between the front airflow duct and the rear airflow duct, so as to adapt to heat shrinkable membranes of different widths. In addition, through the spiral splicing structure of several groups of oblique arc guide plates and longitudinal guide plates and the different height settings, the internal airflow discharged first for shaping is effectively discharged to one side, reducing the mixing with the subsequent discharged airflow, generating more turbulence, causing a large fluctuation effect on the heat shrinkable membrane, and temperature changes during shaping.

[0017] 2. The first motor drives the connected first gear to rotate, and the meshed first gear drives the transmission rod to rotate. The connected synchronous wheel is a ratchet structure and can be driven not to rotate. At the same time, the two sets of threaded sleeves drive the front airflow duct, the rear airflow duct and the tensioning rollers on both sides to move closer to each other, thereby adapting to the width of heat shrinkable films of different specifications and improving overall practicality. The first motor drives the first gear and the transmission rod to rotate in the opposite direction, thereby rotating a set of synchronous wheels connected to the ratchet structure, and cooperating with the synchronous belt to drive the two sets of tensioning rollers on the lower side to rotate.

[0018] 3. The last set of synchronous wheels on the lower side is driven to rotate by the synchronous belt, and the rotating synchronous wheels drive the connected shaft and tensioning roller to rotate. The two sets of second gears are engaged to make the two sets of tensioning rollers rotate in opposite directions. The tensioning rollers on both sides push and pull the conveyed heat shrinkable film toward the edge to achieve tension stretching, strike a balance between suppressing vibration and protecting the performance of the heat shrinkable film, maintain the stability of the film surface, and drive the slider to slide in the movable mouth by rotating the threaded rod to achieve the distance adjustment between the two sets of tensioning rollers to adapt to different thicknesses of heat shrinkable films. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a production and shaping device for degradable polyethylene heat shrinkable film according to the present invention;

[0020] Figure 2 This is a schematic diagram of the inner partial structure of a production and shaping device for degradable polyethylene heat shrinkable film according to the present invention;

[0021] Figure 3 This is a schematic structural diagram of an adjusting component and a shaping component of a device for producing and shaping degradable polyethylene heat shrinkable film according to the present invention;

[0022] Figure 4 This is a partial structural diagram of an adjusting component and a shaping component of a device for producing and shaping degradable polyethylene heat shrinkable film according to the present invention;

[0023] Figure 5 This is a schematic diagram of the partial structure of the adjustment component of the production and shaping device of degradable polyethylene heat shrinkable film of the present invention. Figure 1 ;

[0024] Figure 6 The present invention is a degradable polyethylene heat shrink film production shaping device Figure 5 A schematic diagram of the enlarged structure of the middle part A;

[0025] Figure 7 This is a schematic diagram of the partial structure of the adjustment component of the production and shaping device of degradable polyethylene heat shrinkable film of the present invention. Figure 2 ;

[0026] Figure 8 This is a schematic structural diagram of a shaping component of a shaping device for producing degradable polyethylene heat shrinkable film according to the present invention;

[0027] Figure 9 The present invention is a degradable polyethylene heat shrink film production shaping device Figure 8 Schematic diagram of the enlarged structure of part B in the middle.

[0028] In the figure: 1. shaping box; 2. heat shrink film conveyor frame; 3. auxiliary roller; 4. heat shrink film; 5. adjustment component; 51. fixing rod; 52. transmission rod; 53. threaded part; 54. mounting seat; 55. threaded sleeve; 56. front air flow duct; 57. rear air flow duct; 58. first motor; 59. first gear; 510. fixing seat; 511. V-shaped frame; 512. square plate; 513. movable mouth; 514. slider; 515. round sleeve; 516. threaded rod; 517. shaft; 518. tensioning roller; 519. second gear; 520. synchronous wheel; 521. synchronous belt; 6. shaping component; 61. shaping fan; 62. connecting tube; 63. telescopic connecting pipe; 64. air outlet; 65. oblique arc guide piece; 66. longitudinal guide piece; 67. connecting port. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are relative relationships of directions or positions, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0031] See also Figures 1-9The present invention provides an embodiment of a device for producing and shaping degradable polyethylene heat shrinkable film, comprising a shaping box 1, a heat shrinkable film conveying frame 2 fixedly mounted on one side of the shaping box 1, two sets of auxiliary rollers 3 provided on the inner side of the shaping box 1, a heat shrinkable film sheet 4 provided on the inner side of the heat shrinkable film conveying frame 2 and the two sets of auxiliary rollers 3, an adjustment component 5 provided on the inner side of the shaping box 1, a shaping component 6 provided on the upper side of the adjustment component 5, the adjustment component 5 including four sets of fixed rods 51 fixedly mounted on the inner wall of the shaping box 1, a transmission rod 52 provided between the upper two sets of the four sets of fixed rods 51, and a transmission rod 52 provided on the outer side of the transmission rod 52. Two opposite threaded portions 53 are provided, and two groups of mounting seats 54 are movably sleeved on the outer sides of the upper and lower groups of the four groups of fixed rods 51. 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 rack 2 among 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 among 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.

[0032] The transmission rod 52 is rotatably arranged on the inner wall of the forming box 1. Sliding grooves are provided on the upper and lower sides of the transmission rod 52. The threaded sleeve 55 is threadedly connected to the threaded portion 53 set on the outer side of the transmission rod 52. The rear airflow duct 57 is inserted into the inner position of the front airflow duct 56, and the two groups of first gears 59 are meshed with each other.

[0033] The first motor 58 drives the connected first gear 59 to rotate, and the engaged first gear 59 drives the transmission rod 52 to rotate, while the connected synchronous wheel 520 is a ratchet structure and can be driven not to rotate. At the same time, the two sets of threaded sleeves 55 drive the front air flow duct 56, the rear air flow duct 57 and the tensioning rollers 518 on both sides to move closer to each other, so as to adapt to the width of heat shrinkable membranes 4 of different specifications and improve the overall practicality. The first motor 58 drives the first gear 59 and the transmission rod 52 to rotate in the opposite direction, so that a set of synchronous wheels 520 connected to the ratchet structure rotate, and cooperate with the synchronous belt 521 to drive the two sets of tensioning rollers 518 on the lower side to rotate.

[0034] The front and rear ends of the front airflow duct 56 and the rear airflow duct 57 are fixedly installed with fixing seats 510. A V-shaped frame 511 is fixedly set 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 set on the lower side of the V-shaped frame 511. A movable opening 513 is opened on the inner side of the square plate 512. A slider 514 is movably set on the inner side of the movable opening 513. A round sleeve 515 is fixed on the upper end of the slider 514. A threaded rod 516 is movably provided on the inner side of 515, and 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 shafts 517, and a second gear 519 is fixedly provided on the outer side of the two groups of shafts 517. Synchronous wheels 520 are fixedly installed on the lower side of the two groups of shafts 517, the two groups of fixed seats 510 and the outer side of the transmission rod 52, and the outer sides of the four groups of synchronous wheels 520 are covered with synchronous belts 521.

[0035] The V-shaped frame 511 corresponds to the inner side of the front airflow duct 56 and the rear airflow duct 57 near the middle position, the slider 514 is slidably set in the movable opening 513, the threaded rod 516 is threadedly connected to the V-shaped frame 511, and the two sets of tensioning rollers 518 are provided with spiral patterns on the outside. The two sets of tensioning rollers 518 are clamped on the edge of the heat shrinkable film 4. The two sets of second gears 519 are meshed with each other. One of the four sets of synchronous wheels 520 is arranged on the transmission rod 52 with a ratchet structure and is slidably set on the outside of the sliding groove of the transmission rod 52. One of the four sets of synchronous wheels 520 with a ratchet structure is rotatably set with the threaded sleeve 55.

[0036] The last lower group of synchronous wheels 520 are driven to rotate by the synchronous belt 521, and the rotating synchronous wheels 520 drive the connected shaft 517 and the tensioning roller 518 to rotate, and cooperate with the two groups of second gears 519 arranged in meshing to make the two groups of tensioning rollers 518 rotate in opposite directions. The tensioning rollers 518 on both sides push and pull the conveyed heat shrinkable film 4 toward the edge position to achieve tension stretching, and achieve a balance between suppressing vibration and protecting the performance of the heat shrinkable film 4 to maintain the stability of the film surface. The slider 514 is driven to slide in the movable opening 513 by rotating the threaded rod 516 connected by the thread, so as to adjust the distance between the two groups of tensioning rollers 518 to adapt to the different thicknesses of the heat shrinkable film 4.

[0037] 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 on 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, and several groups of air outlets 64 are opened 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 set on the inner sides of the arc-shaped positions of the front airflow duct 56 and the rear airflow duct 57. Longitudinal guide pieces 66 are fixedly set on one end of the oblique arc guide pieces 65 corresponding to the upper and lower sides of the front airflow duct 56 and the rear airflow duct 57, and connecting ports 67 are opened at the positions of the longitudinal guide pieces 66 on the inner side of the front airflow duct 56.

[0038] The telescopic connecting pipe 63 is connected to the inner side of the front airflow duct 56 and the rear airflow duct 57. Several groups of 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. Several groups of oblique arc guide pieces 65 and longitudinal guide pieces 66 present a spiral structure with a height from low to high, and the two groups of longitudinal guide pieces 66 are staggered.

[0039] By starting the shaping fan 61, the generated air flow is introduced into the front air flow duct 56 and the rear air flow duct 57 through the connecting tube 62 and the telescopic connecting tube 63, and several inclined groups of air outlets 64 are set on the two to guide the air flow to the surface of the heat shrinkable film 4 transported in the middle. The elliptical structure of the front air flow duct 56 and the rear air flow duct 57 can make the internal air flow circulate, and the blown air flow rotates and blows the heat shrinkable film 4 to evenly shape it. The front air flow duct 56 and the rear air flow duct 57 are inserted into the setting and the two groups of connecting ports 67 are staggered into the connecting ports 67, which facilitates the subsequent adjustment of the distance between the front air flow duct 56 and the rear air flow duct 57, thereby adapting to heat shrinkable films 4 of different widths. In addition, through the spiral splicing structure of several groups of oblique arc guide plates 65 and longitudinal guide plates 66 and the different height settings, the air flow discharged from the interior for shaping is effectively discharged to one side, reducing the mixing with the subsequent discharged air flow, generating more turbulence, causing a large fluctuation effect on the heat shrinkable film 4, and temperature changes during shaping.

[0040] Working principle: When in use, by starting the shaping fan 61, the generated air flow is introduced into the front air flow duct 56 and the rear air flow duct 57 through the connecting tube 62 and the telescopic connecting tube 63, and a plurality of inclined groups of air outlets 64 are set on the two to guide the air flow to the surface of the heat shrinkable film 4 transported in the middle. The elliptical structure of the front air flow duct 56 and the rear air flow duct 57 can make the internal air flow circulate, and the blown air flow is used to rotate and blow the heat shrinkable film 4 to evenly shape it. The front air flow duct 56 and the rear air flow duct 57 are inserted into the setting and the two groups of connecting ports 67 are staggered and inserted into the connecting port 6 7, it is convenient to adjust the distance between the front airflow duct 56 and the rear airflow duct 57 in the future, so as to adapt to the heat shrinkable membrane 4 of different widths. In addition, through the spiral splicing structure of several sets of oblique arc guide pieces 65 and longitudinal guide pieces 66 and the different height settings, the airflow discharged from the interior for shaping is effectively discharged to one side, reducing the mixing with the subsequent airflow, generating more turbulence, causing greater fluctuations on the heat shrinkable membrane 4, and temperature changes during shaping; and the first gear 59 connected to the first motor 58 is driven to rotate, driving the meshed first gear 59 to drive the transmission rod 52 to rotate, and The connected synchronous wheel 520 is a ratchet structure and can be driven to rotate without being driven. At the same time, the two sets of threaded sleeves 55 drive the front airflow duct 56, the rear airflow duct 57 and the tensioning rollers 518 on both sides to move closer to each other, so as to adapt to the width of heat shrinkable membranes 4 of different specifications and improve the overall practicality. The first motor 58 drives the first gear 59 and the transmission rod 52 to rotate in the opposite direction, so that the set of synchronous wheels 520 connected to the ratchet structure rotates, and cooperates with the synchronous belt 521 to drive the two sets of tensioning rollers 518 on the lower side to rotate; and the synchronous belt 521 drives the last set of synchronous wheels 520 on the lower side to rotate, and the synchronous belt 521 drives the last set of synchronous wheels 520 on the lower side to rotate. The rotating synchronous wheel 520 drives the connected shaft 517 and tensioning roller 518 to rotate, and cooperates with the two sets of meshing second gears 519 to make the two sets of tensioning rollers 518 rotate in opposite directions. The tensioning rollers 518 on both sides push and pull the conveyed heat shrinkable film 4 toward the edge position to achieve tension stretching, and achieve a balance between suppressing vibration and protecting the performance of the heat shrinkable film 4, maintaining the stability of the film surface, and driving the slider 514 to slide in the movable port 513 by rotating the threaded rod 516 to achieve distance adjustment between the two sets of tensioning rollers 518 to adapt to different thicknesses of the heat shrinkable film 4.

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

[0042] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended 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).

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 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).

4. The device for producing and shaping degradable polyethylene heat shrinkable film according to claim 1, characterized in that: The transmission rod (52) is rotatably arranged on the inner wall of the shaping box (1), and sliding grooves are 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 groups of the first gears (59) are meshed with each other.

5. 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).

6. 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).

7. The device for producing and shaping degradable polyethylene heat shrinkable film according to claim 3, characterized in that: The telescopic connecting pipe (63) is communicated with the inner sides of the front airflow duct (56) and the rear airflow duct (57), and the plurality of groups of air outlets (64) are arranged to be inclined 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, and the longitudinal guide piece (66) on the rear airflow duct (57) is inserted into the connecting port (67).

8. The device for producing and shaping degradable polyethylene heat shrinkable film according to claim 3, characterized in that: The plurality of groups of the oblique arc guide pieces (65) and the longitudinal guide pieces (66) present a spiral structure with the height increasing from low to high, and the two groups of the longitudinal guide pieces (66) are staggered.

Images