CN117621395A

CN117621395A - Fold-preventing film blowing device for POF heat shrink film production

Info

Publication number: CN117621395A
Application number: CN202311706309.8A
Authority: CN
Inventors: 叶美琼; 念锴; 王剑磊; 林凯雄
Original assignee: Jinguan Longhai Plastic Packaging Co ltd
Current assignee: Jinguan Longhai Plastic Packaging Co ltd
Priority date: 2023-12-13
Filing date: 2023-12-13
Publication date: 2024-03-01

Abstract

The invention relates to the technical field of POF heat-shrinkable film production, and discloses an anti-wrinkling film blowing device for POF heat-shrinkable film production, which comprises a base, wherein a supporting frame is fixedly connected to the top end of the base; the film blowing component comprises a material conveying component and a film blowing component, wherein the material conveying component comprises a material box fixedly connected to the top end of a base, one end of a material conveying pipe is connected to the bottom end of the material box, the film blowing component is arranged at the bottom of a support frame and is communicated with the other end of the material conveying pipe, a mixing component is arranged in the material box and is used for mixing and stirring materials, and a plurality of adjusting air openings are formed in the film blowing component at equal intervals along the circumferential direction; the guide assembly comprises a guide piece and a cooling piece, the guide piece is arranged at the top of the support frame and used for guiding the heat shrinkage film on the film blowing piece, and the cooling piece is arranged in the guide piece and used for cooling the guide piece; the wind-up roll is arranged on one side of the top end of the base. The invention is suitable for the production of heat-shrinkable films with different specifications, reduces the occurrence of wrinkles in the positive production process and ensures the quality of products.

Description

Fold-preventing film blowing device for POF heat shrink film production

Technical Field

The invention relates to the technical field of production of POF (polyethylene terephthalate) heat-shrinkable films, in particular to a fold-preventing film blowing device for producing the POF heat-shrinkable films.

Background

The POF heat-shrinkable film is short for biaxially oriented polyolefin shrink film, which is a novel environment-friendly shrink film most widely used in the world at present and rapidly developed. It adopts the special process of advanced biaxially oriented three-layer and five-layer melt co-extrusion. The produced soft shrink film has high transparency, high shrinkage, high toughness, high heat sealing performance, excellent antistatic property and cold resistance, and is safe and reliable.

The utility model provides a PDF heat shrinkage film inflation film manufacturing apparatus among the prior art, the air outlet angle of its air outlet is fixed setting usually, and air outlet angle and amount of wind can't be adjusted usually, and it forms the tubular structure of different diameter specifications at the inflation film in-process to the heat shrinkage film of different specifications, and fixed angle, the air outlet application scope of fixed amount of wind are less, easily lead to the heat shrinkage film of specific specification to produce the fold when the inflation film, and the material among the prior art is carried the plasticization through single conveyer pipe more simultaneously, has the inhomogeneous condition of material plasticization misce state, influences the distribution inequality and influences the final quality of product when the inflation film.

Therefore, there is a need for a wrinkle-preventing film blowing apparatus for POF heat shrink film production, which solves the above problems.

Disclosure of Invention

The invention aims to provide an anti-wrinkling film blowing device for producing a POF heat shrink film, which aims to solve the problems in the prior art.

In order to achieve the above object, the present invention provides the following solutions: the invention provides an anti-wrinkling film blowing device for producing a POF heat shrink film, which comprises the following components:

the top end of the base is fixedly connected with a supporting frame;

the film blowing assembly comprises a material conveying part and a film blowing part, wherein the material conveying part comprises a material box fixedly connected to the top end of the base, one end of a material conveying pipe is connected to the bottom end of the material box, the film blowing part is arranged at the bottom of the support frame and is communicated with the other end of the material conveying pipe, a mixing part is arranged in the material box and is used for mixing and stirring materials, and a plurality of adjusting air openings are formed in the film blowing part at equal intervals along the circumferential direction;

the guide assembly comprises a guide piece and a cooling piece, the guide piece is arranged at the top of the support frame and used for guiding the heat shrinkage film on the film blowing piece, and the cooling piece is arranged in the guide piece and used for cooling the guide piece;

the wind-up roll is arranged on one side of the top end of the base and is used for winding up the heat shrinkage film on the guide piece.

Preferably, the mixing piece is in including the rigid coupling in the back shaft at the inside bottom middle part of material case, the cover is equipped with the main shaft on the back shaft, it is connected with a plurality of first puddlers to rotate on the main shaft lateral wall, the rigid coupling has a plurality of second puddlers on the first puddler, material case top rigid coupling has first motor, the main shaft top stretches out the material case with the output shaft rigid coupling of first motor, be provided with the rotation piece on the back shaft, a plurality of first puddler respectively with the transmission of rotation piece is connected.

Preferably, the rotating member comprises a plurality of first bevel gears coaxially and fixedly connected to the supporting shaft, one end of the first stirring rod extends into the main shaft and is coaxially and fixedly connected with a plurality of second bevel gears, and the first bevel gears are meshed with the second bevel gears.

Preferably, the film blowing piece is in including the rigid coupling the box of support frame bottom, middle part rigid coupling has the extruded tube in the box, extruded tube one end with conveying pipeline intercommunication, the extruded tube other end stretches out the box, equidistant rigid coupling has a plurality of backup pads along circumference on the box inner side wall, the rigid coupling has a plurality of air conveying pipelines in the backup pad, the inside bottom rigid coupling of box has the fan, air conveying pipeline one end with the output rigid coupling and the intercommunication of fan, a plurality of through-holes have been seted up along equidistant in circumference to the box top, the regulation wind gap sets up in the through-hole and with the air conveying pipeline other end intercommunication.

Preferably, the regulation wind gap includes the tuber pipe, the one end that all rigid coupling has the connecting axle on the relative two lateral walls of tuber pipe, the connecting axle other end rotates to be connected on the through-hole inner wall, the tuber pipe bottom with defeated tuber pipe intercommunication, the tuber pipe top is provided with the air regulation spare, the air regulation spare is used for adjusting the size of air outlet, be provided with angle regulation spare in the box, angle regulation spare is used for adjusting the air-out angle of tuber pipe.

Preferably, the angle adjusting part comprises a threaded rod which is rotationally connected in the box body, a connecting disc is connected to the threaded rod in a threaded mode, the connecting disc is sleeved on the extruded tube and is coaxially arranged with the extruded tube, one ends of a plurality of first connecting rods are hinged to the connecting disc along the circumferential direction, one ends of second connecting rods are hinged to the other ends of the first connecting rods, a plurality of supporting tubes are fixedly connected in the box body at equal intervals along the circumferential direction, the other ends of the second connecting rods penetrate through the supporting tubes and are hinged to the bottom of the air outlet tube, a second motor is fixedly connected in the box body, and one ends of the threaded rods are fixedly connected with output shafts of the second motor.

Preferably, the air quantity adjusting piece comprises a supporting frame fixedly connected to the top end of the air outlet pipe, a plurality of shielding plates and a plurality of adjusting plates are fixedly connected to the supporting frame at equal intervals along the circumferential direction, the shielding plates and the adjusting plates are arranged in a staggered mode, the top ends of the adjusting plates are in sliding contact with the bottom ends of the shielding plates, an adjusting ring is rotationally connected to the supporting frame, a plurality of grooves are formed in the inner side wall of the adjusting ring at equal intervals along the circumferential direction, a round rod is fixedly connected to one side, close to the adjusting ring, of the adjusting plate, and the round rod is inserted into the grooves.

Preferably, the guide piece is including rotating two dwang that connect on the support frame, the rigid coupling has the one end of rectangle frame on the dwang, two the rectangle frame is splayed type and distributes, it is connected with a plurality of guide rolls to rotate along circumference in the rectangle frame, the cooling piece sets up in the guide roll, be provided with the control on the support frame, two the dwang respectively with the control transmission is connected.

Preferably, the control member comprises an electric telescopic rod fixedly connected to the supporting frame, a toothed plate is fixedly connected to the telescopic end of the electric telescopic rod, a gear is coaxially fixedly connected to one end of the rotating rod, and the toothed plate is located between the two gears and meshed with the two gears respectively.

Preferably, a plurality of through grooves are formed in the guide roller along the circumferential direction, the cooling piece comprises a semiconductor refrigeration plate fixedly connected in the through grooves, and heat dissipation fans are mounted at two ends of the through grooves.

Compared with the prior art, the invention has the following advantages and technical effects:

according to the fold-preventing film blowing device for producing the POF heat-shrinkable film, the material box is used for placing materials, the materials are mixed, stirred and plasticized through the arranged mixing piece, mixing and plasticizing are guaranteed to be uniform, balance and stability in the process of extruding the materials are guaranteed, fold risks are reduced, the film blowing piece and the adjusting air port are matched for blowing the plasticized materials to manufacture films, air output and air output angles are adjusted through the adjusting air port arranged for producing the heat-shrinkable films with different specifications, the heat-shrinkable films with different specifications are suitable for the heat-shrinkable films with different specifications, the influence of blowing on the heat-shrinkable films is further reduced, the fold is avoided, and the thermoplastic films are cooled, tiled and rolled onto the winding roller through the arranged guide piece and the cooling piece in the film blowing process. The heat-shrinkable film production device is simple in structure, suitable for heat-shrinkable film production of different specifications, capable of reducing the occurrence of wrinkles in the normal production process and guaranteeing the quality of products

Drawings

For a clearer description of an embodiment of the invention or of the solutions of the prior art, the drawings that are needed in the embodiment will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art:

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is an enlarged view of a portion of the invention at A in FIG. 1;

FIG. 3 is an enlarged view of a portion of the invention at B in FIG. 1;

FIG. 4 is a schematic view of the internal structure of the material tank of the present invention;

FIG. 5 is a schematic view of the internal structure of the case of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at C in accordance with the present invention;

FIG. 7 is a schematic diagram of a refrigeration unit according to the present invention;

1, a base; 2. a support frame; 3. a material box; 4. a material conveying pipe; 5. regulating the air port; 51. an air outlet pipe; 52. a connecting shaft; 6. a support shaft; 7. a main shaft; 8. a first stirring rod; 9. a second stirring rod; 10. a first motor; 11. a first bevel gear; 12. a second bevel gear; 13. a case; 14. an extrusion tube; 15. a support plate; 16. an air delivery pipeline; 17. a blower; 18. a through hole; 19. a threaded rod; 20. a connecting disc; 21. a first connecting rod; 22. a second connecting rod; 23. a support tube; 24. a second motor; 25. a support frame; 26. a shielding plate; 27. an adjusting plate; 28. an adjusting ring; 29. a groove; 30. a round bar; 31. a rotating lever; 32. a rectangular frame; 33. a guide roller; 34. an electric telescopic rod; 35. a toothed plate; 36. a gear; 37. a through groove; 38. a semiconductor refrigeration plate; 39. a heat dissipation fan; 40. and (5) a wind-up roller.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.

Referring to fig. 1 to 7, the present invention provides a wrinkle-preventing film blowing apparatus for POF heat-shrinkable film production, comprising:

the base 1, the top of the base 1 is fixedly connected with a supporting frame 2;

the film blowing component comprises a material conveying component and a film blowing component, wherein the material conveying component comprises a material box 3 fixedly connected to the top end of a base 1, one end of a material conveying pipe 4 is connected to the bottom end of the material box 3, the film blowing component is arranged at the bottom of a supporting frame 2 and is communicated with the other end of the material conveying pipe 4, a mixing component is arranged in the material box 3 and is used for mixing and stirring materials, and a plurality of air adjusting ports 5 are formed in the film blowing component at equal intervals along the circumferential direction;

the guide assembly comprises a guide piece and a cooling piece, the guide piece is arranged at the top of the support frame 2 and is used for guiding the heat shrinkage film on the film blowing piece, and the cooling piece is arranged in the guide piece and is used for cooling the guide piece;

the wind-up roll 40 is arranged on one side of the top end of the base 1, and the wind-up roll 40 is used for winding up the heat shrinkage film on the guide piece.

Further optimizing scheme, the mixing piece includes rigid coupling at the back shaft 6 at the inside bottom middle part of material case 3, and the cover is equipped with main shaft 7 on the back shaft 6, rotates on the lateral wall of main shaft 7 and is connected with a plurality of first puddler 8, and the rigid coupling has a plurality of second puddler 9 on the first puddler 8, and material case 3 top rigid coupling has first motor 10, and the output shaft rigid coupling of main shaft 7 top extension material case 3 and first motor 10 is provided with the rotation piece on the back shaft 6, and a plurality of first puddler 8 are connected with the rotation piece transmission respectively.

The main shaft 7 is driven to rotate through the first motor 10, the first stirring rods 8 are driven to rotate around the supporting shaft 6 to realize stirring when the main shaft 7 rotates, and meanwhile, the second stirring rods 9 are driven to rotate through the rotating piece, so that the integral stirring effect is guaranteed through combined action.

In a further optimized scheme, the rotating piece comprises a plurality of first bevel gears 11 which are coaxially and fixedly connected on the supporting shaft 6, one end of the first stirring rod 8 extends into the main shaft 7 and is coaxially and fixedly connected with a plurality of second bevel gears 12, and the first bevel gears 11 are meshed with the second bevel gears 12.

The first bevel gear 11 is fixedly arranged, when the main shaft 7 rotates, the first stirring rod 8 is driven to rotate, and when the first stirring rod 8 rotates, the second bevel gear 12 is driven to rotate on the first bevel gear 11, so that the rotation of the first stirring rod 8 is driven, and the stirring effect is further improved.

Specifically, be hollow structure in first puddler 8 and the second puddler 9, inside and material case 3 wall are provided with electric heating wire in, further improve the even heating to the interior raw materials of material case 3, the cooperation stirring guarantees the even of material mixing.

Further optimizing scheme, the blown film piece includes box 13 of rigid coupling in support frame 2 bottom, the middle part rigid coupling has extruded tube 14 in the box 13, extruded tube 14 one end and conveying pipeline 4 intercommunication, extruded tube 14 other end stretches out box 13, equidistant fixedly connected with a plurality of backup pads 15 along circumference on the box 13 inside wall, the rigid coupling has a plurality of air conveying pipeline 16 in the backup pad 15, the inside bottom rigid coupling of box 13 has fan 17, air conveying pipeline 16 one end and the output rigid coupling and the intercommunication of fan 17, a plurality of through-holes 18 have been seted up along circumference equidistant on box 13 top, regulation wind gap 5 sets up in through-hole 18 and communicates with the air conveying pipeline 16 other end.

The extrusion molding pipe 14 is communicated with the conveying pipe 4 and used for outputting and extruding raw materials, and a plurality of surrounding adjusting air openings 5 are blown by a blower 17, so that the thermal shrinkage film is manufactured by blow molding.

Further optimizing scheme, adjust wind gap 5 includes tuber pipe 51, and the equal rigid coupling has the one end of connecting axle 52 on the relative two lateral walls of tuber pipe 51, and the connecting axle 52 other end rotates to be connected on the through-hole 18 inner wall, and tuber pipe 51 bottom and defeated tuber pipe 16 intercommunication are provided with the air regulation spare on tuber pipe 51 top, and the air regulation spare is used for adjusting the size of air outlet, is provided with the angle regulation spare in the box 13, and the angle regulation spare is used for adjusting the air outlet angle of tuber pipe 51.

The air outlet pipe 51 is rotationally connected in the through hole 18 through the connecting shaft 52, the air outlet angle is adjusted through the arranged angle adjusting piece, and the air quantity is adjusted through the arranged air quantity adjusting piece, so that the heat shrink film production with different specifications is applicable, and wrinkles are avoided.

Further optimizing scheme, angle adjusting part is including rotating the threaded rod 19 of connecting in box 13, threaded connection has connection pad 20 on the threaded rod 19, connection pad 20 cover is established on extruded tube 14 and is coaxial with extruded tube 14 and set up, the last one end that articulates along circumference of connection pad 20 has a plurality of head rods 21, the head rod 21 other end articulates the one end that has second connecting rod 22, equidistant rigid coupling has a plurality of stay tubes 23 along circumference in the box 13, the stay tube 23 is passed to the second connecting rod 22 other end and is articulated with air-out pipe 51 bottom, the rigid coupling has second motor 24 in the box 13, threaded rod 19 one end and the output shaft rigid coupling of second motor 24.

Under the initial condition, the air outlet pipe 51 is vertically placed, forms a cylindrical structure with different diameters according to heat shrinkage of different specifications, drives the threaded rod 19 to rotate through the second motor 24, drives the connecting disc 20 to vertically move when the threaded rod 19 rotates, drives the second connecting rod 22 to move in the supporting tube 23 through the hinged first connecting rod 21 when the connecting disc 20 vertically moves, drives the hinged air outlet pipe 51 to rotate around the connecting point when moving, and realizes the adjustment of the angle of the air outlet pipe 51, so that the cylinder formed by the heat shrinkage films with different diameters is suitable for avoiding the occurrence of wrinkles.

Further optimizing scheme, the air quantity adjusting part includes the carriage 25 of rigid coupling on air-out pipe 51 top, along equidistant rigid coupling in circumference in carriage 25 have a plurality of shielding plates 26 and a plurality of regulating plate 27, a plurality of shielding plates 26 and a plurality of regulating plate 27 crisscross setting, and regulating plate 27 top and shielding plate 26 bottom sliding contact, the carriage 25 internal rotation is connected with adjusting ring 28, a plurality of recesses 29 have been offered along equidistant circumference on the adjusting ring 28 inside wall, one side rigid coupling that adjusting plate 27 is close to adjusting ring 28 has round bar 30, round bar 30 peg graft in recess 29.

The regulating plate 27 is located under the shielding plate 26 in an initial state and is in a contracted state, the size of the air outlet is maximum, and the regulating plate 27 is driven to slide out from the bottom of the shielding plate 26 to shield the air outlet by rotating the regulating ring 28 during regulation, so that the air outlet is controlled to be reduced, the air quantity is regulated, and the method is suitable for production of heat-shrinkable films of different specifications.

Further optimizing scheme, the guide includes rotating two dwang 31 of connection on support frame 2, the rigid coupling has the one end of rectangle frame 32 on the dwang 31, and two rectangle frames 32 are splayed type distribution, and the circumference rotation is connected with a plurality of guide rolls 33 in the rectangle frame 32, and the cooling piece setting is in guide roll 33, is provided with the control on the support frame 2, and two dwang 31 are connected with the control transmission respectively.

The two rectangular frames 32 are distributed in a splayed structure, and the blown heat shrinkable film is cylindrical and forms a planar structure through the splayed rectangular frames 32.

Further optimizing scheme, the control piece includes the electric telescopic link 34 of rigid coupling on support frame 2, and electric telescopic link 34's flexible end rigid coupling has pinion rack 35, and the coaxial rigid coupling of dwang 31 one end has gear 36, and pinion rack 35 is located between two gears 36 and both sides mesh with two gears 36 respectively.

The toothed plate 35 is driven to move through the arranged electric telescopic rod 34, tooth grooves are formed in two sides of the toothed plate 35 and are meshed with the two gears 36, the two gears 36 are driven to synchronously rotate when the toothed plate 35 moves, control over the two rotating rods 31 is achieved, the opening and closing angle of the splayed structure is adjusted, and the folding-preventing guide mechanism is applicable to fold-preventing guide of heat-shrinkable films of different specifications.

In a further optimized scheme, a plurality of through grooves 37 are formed in the guide roller 33 along the circumferential direction, the cooling piece comprises a semiconductor refrigeration plate 38 fixedly connected in the through grooves 37, and heat dissipation fans 39 are arranged at two ends of the through grooves 37.

The cooling end of the semiconductor cooling plate 38 is located at the outer side for cooling the guide roller 33, and the heat dissipation fan 39 dissipates heat from the heating end of the semiconductor cooling plate 38.

In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.

Claims

1. Fold-preventing film blowing device for producing POF heat shrink film is characterized by comprising:

the device comprises a base (1), wherein a support frame (2) is fixedly connected to the top end of the base (1);

the film blowing assembly comprises a material conveying part and a film blowing part, wherein the material conveying part comprises a material box (3) fixedly connected to the top end of a base (1), one end of a material conveying pipe (4) is connected to the bottom end of the material box (3), the film blowing part is arranged at the bottom of a supporting frame (2) and communicated with the other end of the material conveying pipe (4), a mixing part is arranged in the material box (3) and used for mixing and stirring materials, and a plurality of adjusting air inlets (5) are formed in the film blowing part at equal intervals along the circumferential direction;

the guide assembly comprises a guide piece and a cooling piece, the guide piece is arranged at the top of the supporting frame (2) and used for guiding the heat shrinkage film on the film blowing piece, and the cooling piece is arranged in the guide piece and used for cooling the guide piece;

the winding roller (40) is arranged on one side of the top end of the base (1), and the winding roller (40) is used for winding the heat shrinkage film on the guide piece.

2. The wrinkle-resistant film blowing apparatus for POF heat shrinkable film production according to claim 1, wherein: the mixing piece is in including the rigid coupling back shaft (6) at the inside bottom middle part of material case (3), the cover is equipped with main shaft (7) on back shaft (6), rotate on main shaft (7) lateral wall and be connected with a plurality of first puddler (8), the rigid coupling has a plurality of second puddler (9) on first puddler (8), material case (3) top rigid coupling has first motor (10), main shaft (7) top stretch out material case (3) with the output shaft rigid coupling of first motor (10), be provided with on back shaft (6) and rotate a piece, a plurality of first puddler (8) respectively with rotate a transmission connection.

3. The wrinkle-resistant film blowing apparatus for POF heat shrinkable film production according to claim 2, wherein: the rotating piece comprises a plurality of first bevel gears (11) which are coaxially and fixedly connected to the supporting shaft (6), one end of the first stirring rod (8) stretches into the main shaft (7), a plurality of second bevel gears (12) are coaxially and fixedly connected to the main shaft, and the first bevel gears (11) are meshed with the second bevel gears (12).

4. A wrinkle-preventing film blowing apparatus for POF heat shrinkable film production according to claim 3, wherein: the film blowing piece is in including the rigid coupling box (13) of support frame (2) bottom, middle part rigid coupling has extruded tube (14) in box (13), extruded tube (14) one end with conveying pipeline (4) intercommunication, extruded tube (14) other end stretches out box (13), equidistant rigid coupling has a plurality of backup pads (15) along circumference on box (13) inside wall, rigid coupling has a plurality of air conveying pipeline (16) on backup pad (15), the inside bottom rigid coupling of box (13) has fan (17), air conveying pipeline (16) one end with the output rigid coupling and the intercommunication of fan (17), a plurality of through-holes (18) have been seted up along circumference equidistant on box (13) top, regulation wind gap (5) set up in through-hole (18) and with air conveying pipeline (16) other end intercommunication.

5. The wrinkle-resistant film blowing apparatus for POF heat shrinkable film production according to claim 4, wherein: the air outlet (5) comprises an air outlet pipe (51), one end of a connecting shaft (52) is fixedly connected to two opposite outer side walls of the air outlet pipe (51), the other end of the connecting shaft (52) is rotationally connected to the inner wall of the through hole (18), the bottom end of the air outlet pipe (51) is communicated with an air conveying pipeline (16), an air quantity adjusting piece is arranged at the top end of the air outlet pipe (51), the air quantity adjusting piece is used for adjusting the size of the air outlet, an angle adjusting piece is arranged in the box body (13), and the angle adjusting piece is used for adjusting the air outlet angle of the air outlet pipe (51).

6. The wrinkle-preventing film blowing apparatus for POF heat shrinkable film production according to claim 5, wherein: the angle adjusting piece comprises a threaded rod (19) which is rotationally connected into the box body (13), a connecting disc (20) is connected onto the threaded rod (19) in a threaded manner, the connecting disc (20) is sleeved on the extruded tube (14) and coaxially arranged with the extruded tube (14), one ends of a plurality of first connecting rods (21) are hinged onto the connecting disc (20) along the circumferential direction, one ends of second connecting rods (22) are hinged onto the other ends of the first connecting rods (21), a plurality of supporting tubes (23) are fixedly connected into the box body (13) at equal intervals along the circumferential direction, the other ends of the second connecting rods (22) penetrate through the supporting tubes (23) and are hinged to the bottom of the air outlet tube (51), a second motor (24) is fixedly connected into the box body (13), and one ends of the threaded rod (19) are fixedly connected with an output shaft of the second motor (24).

7. The wrinkle-resistant film blowing apparatus for POF heat shrinkable film production according to claim 6, wherein: the air quantity adjusting piece comprises a supporting frame (25) fixedly connected to the top end of the air outlet pipe (51), a plurality of shielding plates (26) and a plurality of adjusting plates (27) are fixedly connected to the supporting frame (25) at equal intervals along the circumferential direction, the shielding plates (26) and the adjusting plates (27) are arranged in a staggered mode, the top ends of the adjusting plates (27) are in sliding contact with the bottom ends of the shielding plates (26), an adjusting ring (28) is connected to the supporting frame (25) in a rotating mode, a plurality of grooves (29) are formed in the inner side wall of the adjusting ring (28) at equal intervals along the circumferential direction, round rods (30) are fixedly connected to one sides, close to the adjusting ring (28), of the adjusting plates (27), and the round rods (30) are inserted into the grooves (29).

8. The wrinkle-resistant film blowing apparatus for POF heat shrinkable film production according to claim 1, wherein: the guide piece is including rotating two dwang (31) of connecting on support frame (2), the rigid coupling has the one end of rectangle frame (32) on dwang (31), two rectangle frame (32) are splayed type and distribute, be connected with a plurality of guide rolls (33) along circumference rotation in rectangle frame (32), the cooling piece sets up in guide roll (33), be provided with the control on support frame (2), two dwang (31) respectively with the control transmission is connected.

9. The wrinkle-resistant film blowing apparatus for POF heat shrinkable film production according to claim 8, wherein: the control piece comprises an electric telescopic rod (34) fixedly connected to the support frame (2), a toothed plate (35) is fixedly connected to the telescopic end of the electric telescopic rod (34), a gear (36) is coaxially fixedly connected to one end of the rotating rod (31), and the toothed plate (35) is located between the two gears (36) and two sides of the toothed plate are respectively meshed with the two gears (36).

10. The wrinkle-resistant film blowing apparatus for POF heat shrinkable film production according to claim 8, wherein: a plurality of through grooves (37) are formed in the guide roller (33) along the circumferential direction, the cooling piece comprises a semiconductor refrigeration plate (38) fixedly connected in the through grooves (37), and heat dissipation fans (39) are mounted at two ends of the through grooves (37).