CN213137763U - Multilayer film blow molding device - Google Patents

Abstract

The utility model discloses a multilayer film blow molding device, belonging to the technical field of film blow molding equipment, comprising a film blowing device, a punching device and a winding device which are arranged in sequence; perforating device includes perforating roller and backing roller, the both ends of perforating roller are equipped with one section perforating area respectively, evenly distributed is punching the head on the circumference surface of perforating area, the circumference of backing roller is equipped with the through-hole on the surface, the through-hole with the position of punching the head is corresponding, the perforating roller is fixed in the perforating roller pivot, the backing roller is fixed in the backing roller pivot, perforating roller and backing roller are equipped with the roller gear that punches and backing roller gear respectively on the corresponding position with one side, the roller gear that punches and the mutual interlock drive of backing roller gear. Punch through the earthing district at plastic film both ends through perforating device, precipitation can be followed the hole infiltration and supply the crop to absorb in the soil, the external precipitation of make full use of, and can prepare the multilayer plastic film according to actual demand, make the plastic film possess the multifunctionality.

Description

Multilayer film blow molding device

Technical Field

The utility model relates to a film blow molding equipment technical field, concretely relates to multilayer film blow molding device.

Background

In recent years, the film industry has been developing rapidly, and plastic films have become one of the fastest growing materials in the industry. The agricultural mulching film is used by China from the end of the last 80 th century, and the good heat preservation, water retention and fertilizer retention effects of the agricultural mulching film bring obvious yield increase for agriculture in China. With the development of agriculture, people have higher and higher requirements on agricultural mulching films. The existing mulching films are mostly single-layer mulching films, have relatively single functions, and cannot meet all use requirements such as strength, light conversion performance, ultraviolet resistance and the like. In addition, the mulching film is commonly used for soil heat preservation and moisture preservation in agricultural production, and two sides of the mulching film are generally covered by covering soil, so that the covering soil areas on two sides of the mulching film can obstruct the use of outside rainfall for crops to a certain extent.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a multilayer film blow molding device punches through the earthing district at perforating device to the plastic film both ends, and precipitation can supply the crop to absorb in oozing to soil along the hole along the earthing district of plastic film surface flow to both sides, the external precipitation of make full use of, and can prepare the multilayer plastic film according to actual demand, make the plastic film possess the multifunctionality.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

a multilayer film blow molding device comprises a film blowing device, a punching device and a winding device which are sequentially arranged, wherein the film blowing device comprises a plurality of extruders and a frame body, one ends of the extruders are connected with a blow molding head and extend into the frame body, a herringbone plate positioned above the blow molding head is arranged at the upper end of the frame body, a plurality of guide rollers are arranged above the herringbone plate, and a blowing port is arranged on the blow molding head; perforating device includes perforating roller and backing roller, perforating roller's both ends are equipped with one section perforating area respectively, evenly distributed is punching the head on the circumference surface of perforating area, the circumference of backing roller is equipped with the through-hole on the surface, the through-hole with the position of punching the head is corresponding, perforating roller fixes in the perforating roller pivot, the backing roller is fixed in the backing roller pivot, perforating roller and backing roller are equipped with respectively on the corresponding position with one side perforating roller gear and backing roller gear, perforating roller gear and the mutual interlock drive of backing roller gear, perforating roller pivot with the both ends of backing roller pivot are all installed on the support of both sides, the support is located on the base.

Preferably, the punching heads are arranged and distributed on the circumferential surface in an oblique manner.

Preferably, the front end of the punching head is a conical tip.

Preferably, the length of the perforated region is set to 5 to 20 cm.

Preferably, the diameter of the perforating roller is the same as that of the pad roller.

The utility model has the advantages of that:

1. the multi-layer mulching film can be prepared according to actual requirements by arranging a plurality of extruders, so that the mulching film has multiple functions, for example, two extruders are arranged, different raw materials are added into the extruders, and the raw materials are respectively heated and melted and blown by a blowing head to form a film, so that the film with a two-layer structure is obtained, and the properties of the two layers of films are different due to the different raw materials of the two layers of films;

2. the mulching film passing through the punching area is punched through the punching device, so that the two ends of the mulching film contain a plurality of small holes, when the mulching film is covered with soil, the soil covering area corresponds to the punching area, the small holes can be used as leakage holes, rainfall can flow to the soil covering areas on the two sides along the surface of the mulching film and then seeps into the soil along the leakage holes for being absorbed by crops, external rainfall is fully utilized, and the water consumption of agricultural production is reduced;

3. the perforating heads are obliquely distributed on the circumferential surface, so that the small holes at the two ends of the mulching film are obliquely arranged, the tensile resistance of the mulching film can be improved, the mulching film is not easy to tear during the growth of crops, and particularly when the mulching film is removed and recovered, the obliquely arranged small holes have better tensile resistance than the conventional transversely arranged small holes;

4. punch the plastic film through perforating device, perforating device follows from the coiling mechanism, need not to increase any power, and the plastic film advances through the coiling mechanism pulling, and the plastic film drives the perforating roller and rolls inwards with the backing roll, and at the roll in-process, the plastic film both ends are punched.

Drawings

FIG. 1 is a schematic view of the overall structure of a multilayer film blow molding apparatus according to the present invention;

FIG. 2 is a schematic view of the overall structure of the punching apparatus;

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a rear view of FIG. 2;

fig. 5 is a schematic view of the overall structure of the mulching film.

In the figure: 1-film blowing device, 2-punching device, 3-winding device, 4-extruder, 5-frame body, 6-blow head, 7-herringbone plate, 8-guide roller, 9-blowing port, 10-punching roller, 11-cushion roller, 12-punching head, 13-through hole, 14-punching roller rotating shaft, 15-cushion roller rotating shaft, 16-punching roller gear, 17-cushion roller gear, 18-bracket, 19-base, 20-film, 21-soil covering area.

Detailed Description

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

The multilayer film blow molding device shown in fig. 1-5 comprises a film blowing device 1, a punching device 2 and a winding device 3 which are sequentially arranged, wherein the film blowing device 1 comprises a plurality of extruders 4 and a frame body 5, one end of each extruder 4 is connected with a blow molding head 6 and extends into the frame body 5, a herringbone plate 7 positioned above the blow molding head 6 is arranged at the upper end of the frame body 5, a plurality of guide rollers 8 are arranged above the herringbone plate 7, and a blowing port 9 is arranged on the blow molding head 6; perforating device 2 includes perforating roller 10 and pad roller 11, the both ends of perforating roller 10 are equipped with one section perforating area respectively, evenly distributed is punching head 12 on the circumference surface of perforating area, be equipped with through-hole 13 on the circumference surface of pad roller 11, through-hole 13 with the position of punching head 12 is corresponding, perforating roller 10 is fixed in perforating roller pivot 14, pad roller 11 is fixed in pad roller pivot 15, perforating roller 10 is equipped with perforating roller gear 16 and pad roller gear 17 respectively with corresponding the position of pad roller 11 with one side, perforating roller gear 16 and the mutual interlock drive of pad roller gear 17, perforating roller pivot 14 with the support 18 in both sides is all installed at the both ends of pad roller pivot 15, support 18 is located on base 19.

The punching heads 12 are arranged obliquely on the circumferential surface. The front end of the perforating head 12 is a conical tip. The length of the perforated area is set to be 5-20 cm. The perforating roller 10 and the backing roller 11 have the same diameter.

The plastic raw material is added into an extruder 4 and heated and pressurized into molten material, the molten material is sent to a blow molding head 6 and thrown out from a film outlet of the blow molding head 6 to form an annular film tube, a blow hole 9 is arranged on the blow molding head 6 to blow air to the film tube so as to maintain the film tube in an expanded tubular shape and cool the film tube at the same time to accelerate the forming and solidification of the film tube, the film tube passes upwards through a herringbone plate 7 and is folded and folded into a film 20, the film enters a punching device 2 under the traction and guide action of a guide roller 8, the film 20 passes through a space between a punching roller 10 and a backing roller 11 and is connected to a film winding paper tube of a winding device 3, the winding device 3 pulls the film 20 to advance, the film 20 passing through the punching region is punched through the punching device 2, so that the two ends of the film 20 contain a plurality of small holes, the punching heads 12 are distributed on the circumferential surface in an inclined way, and the small holes at the two ends of the film 20 are, the stretching resistance of plastic film can be improved, perforating device 2 is driven in coiling mechanism 3, need not to increase any power, and film 20 advances through the 3 pulling of coiling mechanism, and film 20 drives perforating roller 10 and backing roll 11 and inwards rolls, and at the roll in-process, film 20 both ends are punched. Wherein, coiling mechanism 3's structure adopts prior art's rolling equipment, and it includes a plurality of wind-up rolls, and concrete structure and how the rolling is prior art, and it is no longer repeated here.

When the mulching film is covered with soil, the soil covering area 21 corresponds to the punching area, the small holes can be used as leakage holes, the diameter of the small holes and the length of the punching area can be set according to the width of the actual mulching film, rainfall can flow to the soil covering areas 21 on two sides along the surface of the mulching film and seep into the soil along the leakage holes to be absorbed by crops, external rainfall is fully utilized, and water consumption in agricultural production is reduced. In addition, can set up a plurality of extruders 4 according to actual demand, add different raw materials in 4 to the extruders, prepare multilayer plastic film, make the plastic film possess the multifunctionality.

The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.

Claims (5)

1. A multilayer film blow molding device is characterized by comprising a film blowing device, a punching device and a winding device which are sequentially arranged, wherein the film blowing device comprises a plurality of extruders and a frame body, one end of each extruder is connected with a blow molding head and extends into the frame body, a herringbone plate positioned above the blow molding head is arranged at the upper end of the frame body, a plurality of guide rollers are arranged above the herringbone plate, and a blowing port is formed in the blow molding head; perforating device includes perforating roller and backing roller, perforating roller's both ends are equipped with one section perforating area respectively, evenly distributed is punching the head on the circumference surface of perforating area, the circumference of backing roller is equipped with the through-hole on the surface, the through-hole with the position of punching the head is corresponding, perforating roller fixes in the perforating roller pivot, the backing roller is fixed in the backing roller pivot, perforating roller and backing roller are equipped with respectively on the corresponding position with one side perforating roller gear and backing roller gear, perforating roller gear and the mutual interlock drive of backing roller gear, perforating roller pivot with the both ends of backing roller pivot are all installed on the support of both sides, the support is located on the base.

2. A multilayer film blow molding apparatus according to claim 1, wherein said punching heads are arranged diagonally on the circumferential surface.

3. A multilayer film blow molding apparatus according to claim 1, wherein said punching head has a tapered tip at a front end thereof.

4. A multilayer film blow molding apparatus according to claim 1, wherein the length of said perforated region is set to 5 to 20 cm.

5. A multilayer film blow molding apparatus according to claim 1, wherein said perforated roller and said back-up roller have the same diameter.

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