CN216400536U

CN216400536U - Film blowing machine

Info

Publication number: CN216400536U
Application number: CN202122859307.5U
Authority: CN
Inventors: 郑荣仁
Original assignee: Jiangmen Jianghai Dakun Plastic Products Co ltd
Current assignee: Jiangmen Jianghai Dakun Plastic Products Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-04-29
Anticipated expiration: 2031-11-19

Abstract

The utility model discloses a film blowing machine which comprises a film blowing machine body, a winding mechanism and an air cooling pipe, wherein the winding mechanism is used for winding a plastic film processed by the film blowing machine body, the air cooling pipe is arranged between the film blowing machine body and the winding mechanism, an annular installation part is arranged on the inner side wall of one end of the air cooling pipe along the circumferential direction, an annular cavity is arranged in the annular installation part along the circumferential direction of the air cooling pipe, the annular cavity is connected with an air cooler, and a plurality of ventilation holes communicated with the annular cavity are formed in the end face, close to the other end of the air cooling pipe, of the annular installation part. According to the film blowing machine, the produced plastic film can be gradually cooled, and the quality of the cooled plastic film can be improved.

Description

Film blowing machine

Technical Field

The utility model relates to plastic film processing equipment, in particular to a film blowing machine.

Background

The film blowing machine is equipment for heating and melting plastic particles and blowing the plastic particles into a plastic film, and mainly comprises a film blowing machine body, an air cooling mechanism and a winding mechanism, wherein the plastic film is cooled by the air cooling mechanism after being processed by the film blowing machine body and is finally wound on the winding mechanism. The air cooling mechanism mainly comprises an air cooling ring, a cavity is arranged in the air cooling ring along the circumferential direction, a plurality of ventilation holes are formed in the inner side wall of the air cooling ring along the circumferential direction, the ventilation holes are connected with the cavity, and the cavity is connected with an air cooler. The plastic film passes through the air cooling ring in the conveying process, the air cooler is started, and cold air generated by the air cooler can pass through the air vent, so that the plastic film is cooled.

The existing film blowing machine has the following disadvantages: the higher temperature plastic film passes through the air cooling ring and is subjected to quenching instead of gradual cooling, thereby affecting the quality of the cooled plastic film.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a film blowing machine which can gradually cool produced plastic films and further can improve the quality of the cooled plastic films.

According to the embodiment of the utility model, the film blowing machine comprises:

a film blowing machine body;

the winding mechanism is used for winding the plastic film processed by the film blowing machine body;

the forced air cooling pipe set up in the inflation film manufacturing machine body with between the winding mechanism, the inside wall of forced air cooling pipe one end is provided with annular installation department along circumference, follow in the annular installation department the circumference of forced air cooling pipe is provided with the toroidal cavity, the toroidal cavity is connected with the air-cooler, the annular installation department is close to the terminal surface of the forced air cooling pipe other end is provided with a plurality of intercommunications toroidal cavity's ventilation hole.

The film blowing machine provided by the embodiment of the utility model at least has the following technical effects:

after the film blowing machine body produces the plastic film, the plastic film enters the air cooling pipe from one end, far away from the annular installation part, of the air cooling pipe, passes through the annular installation part, leaves from the air cooling pipe, and is finally wound on the winding mechanism. When plastic film passed through air-cooled pipe, start the air-cooler, the cold wind that the air-cooler produced can be followed the ventilation hole and seen off, the cold wind that the ventilation hole was seen off can flow along plastic film moving direction's opposite direction and follow the one end that the annular installation department was kept away from to air-cooled pipe and discharge, cold wind flows the in-process and exchanges heat with plastic film always, cold wind intensifies gradually, when flowing to the one end that the annular installation department was kept away from to air-cooled pipe, cold wind becomes hot-blast, and then plastic film is when air-cooled pipe, the temperature of the air that plastic film met is reducing gradually, thereby make plastic film cool off gradually, and the quench can not appear, thereby can improve the quality after the plastic film cools off.

According to some embodiments of the present invention, an air outlet direction of the vent hole is inclined toward an axis of the air-cooling pipe with respect to a length direction of the air-cooling pipe.

According to some embodiments of the present invention, an inclination angle of an air outlet direction of the vent hole with respect to a length direction of the air-cooling pipe is α, and α is not less than 15 ° and not more than 30 °.

According to some embodiments of the present invention, the plurality of the ventilation holes are arranged in a circumferential direction of the air-cooling pipe, and each of the plurality of the ventilation holes is arranged in a radial direction of the air-cooling pipe.

According to some embodiments of the utility model, a plurality of communicating pipes are circumferentially arranged on the outer side wall of the air-cooled pipe, one end of each communicating pipe is communicated with the annular cavity, and the other end of each communicating pipe is communicated with the air cooler.

According to some embodiments of the utility model, the outer side wall of the annular mounting portion close to the axial center of the air-cooling pipe is provided with an outer convex cambered surface.

According to some embodiments of the utility model, an air duct through which a plastic film passes is coaxially arranged at one end of the air cooling pipe, which is far away from the annular mounting portion, the diameter size of the air duct is gradually reduced along a direction close to the annular mounting portion, and an air outlet channel is reserved between an outer side wall of one end of the air duct, which is far away from the annular mounting portion, and an inner side wall of the air cooling pipe.

According to some embodiments of the utility model, one end of the film blowing machine body is provided with a film blowing machine head, a discharge hole of the film blowing machine head is arranged upwards, the film blowing machine further comprises a mounting frame, the air cooling pipe is vertically arranged on the mounting frame and is positioned above the film blowing machine head, a herringbone plate is arranged above the air cooling pipe of the mounting frame, and a group of traction rollers are arranged above the herringbone plate of the mounting frame.

According to some embodiments of the utility model, the herringbone plate comprises two inclined plates which are symmetrically arranged relative to a vertical plane, the top ends of the two inclined plates are rotatably mounted on the mounting frame, and an adjusting assembly for adjusting the included angle between the two inclined plates is arranged between the inclined plates and the mounting frame.

According to some embodiments of the utility model, the adjustment assembly comprises:

the threaded holes are arranged on the mounting frame at intervals along the vertical direction and are positioned on the symmetrical surfaces of the two inclined plates, and one threaded hole is in threaded connection with a bolt;

and the two adjusting rods are rotatably arranged on the end surfaces, close to the two inclined plates, of the two adjusting rods, and the other ends of the adjusting rods are provided with trepanning holes and sleeved with the bolts through the trepanning holes.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

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

FIG. 2 is a schematic structural view of an air-cooled duct;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic view of the installation of the herringbone plate;

reference numerals:

the film blowing machine comprises a film blowing machine body 100, a film blowing machine head 101 and a feed hopper 102; a winding mechanism 200; the air cooling pipe 300, the annular mounting part 301, the annular cavity 302, the vent hole 303, the communicating pipe 304, the air guide cylinder 305 and the air outlet channel 306; the device comprises a mounting frame 400, a herringbone plate 401, a traction roller 402, an inclined plate 403, a threaded hole 404, a bolt 405, an adjusting rod 406 and a guide roller 407; a plastic film 500.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A film blowing machine according to an embodiment of the present invention will be described below with reference to fig. 1 to 4.

As shown in fig. 1 to 4, a film blowing machine according to an embodiment of the present invention includes:

a film blowing machine body 100;

the winding mechanism 200 is used for winding the plastic film 500 processed by the film blowing machine body 100;

the air-cooled tube 300 is arranged between the film blowing machine body 100 and the winding mechanism 200, an annular installation portion 301 is arranged on the inner side wall of one end of the air-cooled tube 300 along the circumferential direction, an annular cavity 302 is arranged in the annular installation portion 301 along the circumferential direction of the air-cooled tube 300, the annular cavity 302 is connected with an air cooler, and a plurality of ventilation holes 303 communicated with the annular cavity 302 are arranged on the end face, close to the other end of the air-cooled tube 300, of the annular installation portion 301.

In this embodiment, after the film blowing machine body 100 produces the plastic film 500, the plastic film 500 enters the air-cooled tube 300 from the end of the air-cooled tube 300 far away from the annular installation portion 301, passes through the annular installation portion 301, leaves from the air-cooled tube 300, and is finally wound on the winding mechanism 200. When plastic film 500 passes through air-cooled pipe 300, start the air-cooler, cold wind that the air-cooler produced can be seen off from ventilation hole 303 through annular cavity 302, cold wind that ventilation hole 303 seen off can flow along plastic film 500 moving direction's opposite direction and follow air-cooled pipe 300 and keep away from the one end discharge of annular installation department 301, cold wind flows the in-process and exchanges heat with plastic film 500 all the time, cold wind heats up gradually, when flowing to air-cooled pipe 300 and keep away from the one end of annular installation department 301, cold wind becomes hot-blast, and then when plastic film 500 passes through air-cooled pipe 300, the temperature of the air that plastic film 500 meets is the gradual reduction, thereby make plastic film 500 cool off gradually, and the quench can not appear, thereby can improve the quality after plastic film 500 cools off.

It should be noted that the film blowing machine body 100 is a common device for film blowing, the feed end of the film blowing machine body 100 can be provided with the feed hopper 102, the discharge end of the film blowing machine body 100 can be provided with the film blowing machine head 101, two screws can be arranged in the film blowing machine body 100 side by side, the raw material enters the film blowing machine body 100 from the feed hopper 102 to be heated, meanwhile, the raw material after hot melting is conveyed to the film blowing machine head 101 through the cooperation of the two screws, the film blowing machine head 101 can perform film blowing work and form a cylindrical plastic film 500, the plastic film 500 is cooled through the air cooling pipe 300, and finally, the plastic film is coiled on the winding mechanism 200. The winding mechanism 200 may be a common winding roller or a winding disc, the air cooler is a common device capable of providing cold air, and the structure of the air cooler is not improved in the present invention, so the structure and the working principle of the air cooler are not described herein again.

In some embodiments of the present invention, as shown in fig. 3, the air outlet direction of the vent 303 is inclined toward the axis of the air-cooling pipe 300 with respect to the length direction of the air-cooling pipe 300. Specifically, ventilation hole 303 may be a circular hole structure, the axial direction of ventilation hole 303 is not parallel to the length direction of air-cooled pipe 300, but there is a certain included angle, and ventilation hole 303 extends towards the axle center slope that is close to air-cooled pipe 300 along the direction of keeping away from annular cavity 302, and then the air-out direction that makes ventilation hole 303 inclines towards the axle center of air-cooled pipe 300 for the length direction of air-cooled pipe 300, thereby make the cold wind that ventilation hole 303 sent out not only can flow towards the one end that air-cooled pipe 300 kept away from annular installation department 301, but also can blow to plastic film 500, make plastic film 500's cooling effect better.

In some embodiments of the present invention, as shown in fig. 3, the air outlet direction of the vent holes 303 is inclined at an angle α of 15 ° or more and 30 ° or less with respect to the longitudinal direction of the air-cooling pipe 300. That is to say that the contained angle between the air-out direction of ventilation hole 303 and the plastic film 500 lateral wall is between 15 to 30 roughly, and then can not exert great effort to plastic film 500 when making cold wind can blow to plastic film 500 to can reduce plastic film 500 and take place deformation because of the effect of cold wind.

In some embodiments of the present invention, as shown in fig. 3, the ventilation holes 303 are arranged in plural sets in the circumferential direction of the air-cooling duct 300, and each set of ventilation holes 303 is arranged in plural in the radial direction of the air-cooling duct 300. And then the cold air in the annular cavity 302 can be more evenly conveyed into the air cooling pipe 300, so that the cooling effect of the cold air on the plastic film 500 is better.

In some embodiments of the present invention, as shown in fig. 2 and 3, a plurality of communication pipes 304 are circumferentially disposed on an outer side wall of the air-cooled pipe 300, one end of each communication pipe 304 is communicated with the annular cavity 302, and the other end of each communication pipe 304 is communicated with the air-cooler. If only one communication pipe 304 is provided, the cool air enters the annular cavity 302 from the communication pipe 304, and most of the cool air is intensively conveyed into the air-cooling pipe 300 from the plurality of ventilation holes 303 close to the communication pipe 304, so that the cooling effect of the plastic film 500 is poor. In this embodiment, the side wall of the annular cavity 302 away from the axis of the air-cooling pipe 300 can be uniformly provided with a plurality of air inlet holes along the circumferential direction, the communicating pipe 304 can be communicated with the corresponding air inlet holes, and cold air can further enter the annular cavity 302 from a plurality of directions, so that the cold air can be conveyed to the air-cooling pipe 300 from a plurality of directions, and the plastic film 500 has a better cooling effect.

In some embodiments of the present invention, as shown in fig. 3, the outer side wall of the annular mounting portion 301 near the axial center of the air-cooling pipe 300 is provided with an outer convex arc surface. When the plastic film 500 passes through the annular mounting portion 301, the outer side wall of the plastic film 500 is easily contacted with the outer side wall of the annular mounting portion 301 close to the axis of the air-cooled tube 300, in this embodiment, the outer side wall of the annular mounting portion 301 close to the axis of the air-cooled tube 300 is set to be a convex arc surface, and then the abrasion of the annular mounting portion 301 to the plastic film 500 can be reduced.

In some embodiments of the present invention, as shown in fig. 2, an air duct 305 through which the plastic film 500 passes is coaxially disposed at an end of the air-cooled pipe 300 away from the annular mounting portion 301, a diameter of the air duct 305 gradually decreases along a direction approaching the annular mounting portion 301, and an air outlet channel 306 is reserved between an outer side wall of the end of the air duct 305 away from the annular mounting portion 301 and an inner side wall of the air-cooled pipe 300. The air duct 305 is arranged, the diameter size of the air duct 305 is gradually reduced along the direction close to the annular installation part 301, hot air after cooling the plastic film 500 in the air cooling pipe 300 is discharged from the air outlet channel 306, and the discharged hot air can flow along the direction far away from the axis of the air cooling pipe 300, so that the discharged hot air can be prevented from directly blowing to the discharge hole of the film blowing machine head 101 to influence the discharge of the film blowing machine head 101.

In some embodiments of the present invention, as shown in fig. 1 and 4, one end of the film blowing machine body 100 is provided with a film blowing head 101, a discharge port of the film blowing head 101 is arranged upward, the film blowing machine further includes a mounting frame 400, the air-cooled pipe 300 is vertically arranged on the mounting frame 400 and located above the film blowing head 101, the mounting frame 400 is provided with a herringbone plate 401 above the air-cooled pipe 300, and the mounting frame 400 is provided with a group of traction rollers 402 above the herringbone plate 401. After the film blowing machine head 101 blows the film to form the cylindrical plastic film 500, the plastic film 500 moves upwards and passes through the air cooling pipe 300 for cooling, then passes through the herringbone plate 401, the herringbone plate 401 extrudes the cylindrical plastic film 500 into the flat plastic film 500, the plastic film 500 passes through the drawing roller 402 and then is wound on the winding mechanism 200, and the drawing roller 402 can provide a drawing effect. In addition, the mounting frame 400 may be provided with a plurality of guide rollers 407, and the guide rollers 407 may serve to guide the plastic film 500 to move only along a predetermined path.

In some embodiments of the present invention, as shown in fig. 4, the herringbone plate 401 includes two inclined plates 403 symmetrically arranged with respect to a vertical plane, top ends of the two inclined plates 403 are rotatably mounted on the mounting frame 400, and an adjusting assembly for adjusting an included angle between the two inclined plates 403 is disposed between the inclined plates 403 and the mounting frame 400. The included angle between the two inclined plates 403 can be adjusted by operating the adjusting assembly, so that the herringbone plate 401 formed by the two inclined plates 403 can extrude the cylindrical plastic films 500 with different diameters into the flat plastic film 500, that is, the herringbone plate 401 can be suitable for the cylindrical plastic films 500 with different diameters, and the practicability is good.

In some embodiments of the present invention, as shown in fig. 4, the adjusting assembly includes a plurality of threaded holes 404 and two adjusting rods 406, the plurality of threaded holes 404 are vertically disposed on the mounting frame 400 at intervals, the threaded holes 404 are located on the symmetrical surfaces of the two inclined plates 403, one of the threaded holes 404 is in threaded connection with a bolt 405, the two adjusting rods 406 are rotatably mounted on the end surfaces of the two inclined plates 403 which are close to each other, and the other end of the adjusting rod 406 is provided with a sleeve hole and is sleeved with the bolt 405 through the sleeve hole. Because the length of the adjusting rod 406 is unchanged, the distance between the connecting position of the adjusting rod 406 and the inclined plate 403 and the top end of the inclined plate 403 is unchanged, when the bolt 405 is in threaded connection with different threaded holes 404, the distance between one end of the adjusting rod 406 far away from the inclined plate 403 and the top end of the inclined plate 403 is changed, and then the included angle between the two inclined plates 403 can be adjusted. In this embodiment, since the threaded holes 404 are located on the symmetry plane of the two inclined plates 403, after the bolts 405 are in threaded connection with different threaded holes 404 and the included angle between the two inclined plates 403 is adjusted, the two inclined plates 403 can still be symmetrically arranged relative to the symmetry plane, so that the function of the character plate 401 is not affected.

In order to prevent the adjustment lever 406 from interfering with the plastic film 500 when the plastic film 500 passes through the chevron plate 401, the adjustment lever 406 may be rotatably connected to the inclined plate 403 at a position close to the edge side. In addition, the adjusting assembly may also have another structure, for example, two air cylinders rotatably disposed on the mounting bracket 400 may be provided, the air cylinders may be rotatably connected to the outer end surfaces of the corresponding inclined plates 403, and the included angle between the two inclined plates 403 may also be adjusted by extending and retracting the air cylinders.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A film blowing machine, characterized by comprising:

a film blowing machine body (100);

the winding mechanism (200) is used for winding the plastic film processed by the film blowing machine body (100);

air-cooled pipe (300), set up in inflation film manufacturing machine body (100) with between winding mechanism (200), the inside wall of air-cooled pipe (300) one end is provided with annular installation department (301) along circumference, follow in annular installation department (301) the circumference of air-cooled pipe (300) is provided with annular cavity (302), annular cavity (302) are connected with the air-cooler, annular installation department (301) are close to the terminal surface of the air-cooled pipe (300) other end is provided with a plurality of intercommunications ventilation hole (303) of annular cavity (302).

2. The film blowing machine according to claim 1, wherein the air outlet direction of the air vent (303) is inclined toward the axis of the air-cooled pipe (300) with respect to the length direction of the air-cooled pipe (300).

3. The film blowing machine according to claim 2, characterized in that the air outlet direction of the air vent holes (303) is inclined at an angle α, 15 ° ≦ α ≦ 30 °, with respect to the length direction of the air-cooled pipe (300).

4. The film blowing machine according to any one of claims 1 to 3, wherein a plurality of sets of the ventilation holes (303) are arranged along a circumferential direction of the air-cooling pipe (300), and a plurality of the ventilation holes (303) are arranged along a radial direction of the air-cooling pipe (300) in each set.

5. The film blowing machine according to any one of claims 1 to 3, wherein a plurality of communicating pipes (304) are circumferentially arranged on the outer side wall of the air-cooled pipe (300), one end of each communicating pipe (304) is communicated with the annular cavity (302), and the other end of each communicating pipe (304) is communicated with the air-cooler.

6. The film blowing machine according to any one of claims 1 to 3, characterized in that the outer side wall of the annular mounting part (301) close to the axial center of the air cooling pipe (300) is provided with an outer convex cambered surface.

7. The film blowing machine according to any one of claims 1 to 3, characterized in that an air duct (305) for plastic film to pass through is coaxially arranged at one end of the air-cooled pipe (300) far away from the annular mounting portion (301), the diameter of the air duct (305) is gradually reduced along a direction close to the annular mounting portion (301), and an air outlet channel (306) is reserved between the outer side wall of one end of the air duct (305) far away from the annular mounting portion (301) and the inner side wall of the air-cooled pipe (300).

8. The film blowing machine according to any one of claims 1 to 3, characterized in that one end of the film blowing machine body (100) is provided with a film blowing machine head (101), a discharge hole of the film blowing machine head (101) is arranged upwards, the film blowing machine further comprises a mounting frame (400), the air-cooled pipe (300) is vertically arranged on the mounting frame (400) and located above the film blowing machine head (101), a herringbone plate (401) is arranged above the air-cooled pipe (300) on the mounting frame (400), and a group of traction rollers (402) are arranged above the herringbone plate (401) on the mounting frame (400).

9. The film blowing machine according to claim 8, characterized in that the chevron-shaped plate (401) comprises two inclined plates (403) symmetrically arranged with respect to a vertical plane, the top ends of the inclined plates (403) are rotatably mounted on the mounting frame (400), and an adjusting assembly for adjusting the included angle between the two inclined plates (403) is arranged between the inclined plates (403) and the mounting frame (400).

10. The film blowing machine of claim 9, wherein the adjustment assembly comprises:

the threaded holes (404) are arranged on the mounting frame (400) at intervals in the vertical direction, the threaded holes (404) are positioned on the symmetrical surfaces of the two inclined plates (403), and a bolt (405) is connected to one threaded hole (404) in a threaded mode;

the two adjusting rods (406) are rotatably mounted on the end faces, close to the two inclined plates (403), of the two adjusting rods, sleeve holes are formed in the other ends of the adjusting rods (406), and the bolts (405) are sleeved through the sleeve holes.