CN2071651U - Mould head of double plain film for plastics drawing spinning machine set - Google Patents

Abstract

The utility model discloses a mould for the plastic extrusion forming which is used for the wire drawing machine set of a plastic woven sack, composed of three parts of a left mould, a middle mould and a right mould. The utility model has two subchannels, two mould cavities and two mould openings. The utility model can draw plain films with double layers simultaneously. The yield of the utility model is twice of a mould head of an ordinary plain film. The level of the pipe film wire drawing is achieved. The utility model can entirely make use of regenerated plastic particles which are processed to form by waste wires. Compared with the widening mould head of the plain film, the utility model saves a suite of folding devices. The utility model has the advantages of less investment, low cost and simple manufacture. The thickness of discharging films is convenient for controlling.

Description

Mould head of double plain film for plastics drawing spinning machine set

The utility model relates to a kind of mould of plastics extrusion modling, is used for the wire drawing unit of Polywoven Bag.

Wire drawing is the preceding working procedure of Polywoven Bag group machine, and two kinds of forms of pipe periosteum wire drawing peace film wire drawing are arranged usually.Periosteum wire drawing output is higher, but material purity is required height, can not reuse regenerated plastics particle.Flat film wire drawing can make full use of the regenerated plastics particle that is processed by waste silk, but output is about the periosteum wire drawing half.In order to improve wire drawing productivity ratio, once developed a kind of flat film die of widening, long for common flat film die 1.5～2 times of its mould are pulled out very wide monofilm earlier, are folded into to break into monofilament behind two films and stretch.This method can make output double, and puts but need to increase a pack closed assembly, and investment cost increases.Because die head is widened, and Mould Machining is complicated, it is also wayward to go out film thickness simultaneously.

Task of the present utility model provides a kind of double plain film die head of plastic wire-drawing unit, and its wire drawing output is the twice of common flat film die, goes out film thickness and regulates easily.

Task of the present utility model is finished with following mode: it has two runners, two die cavitys and two die orifices, the coupling sleeve upper end links to each other with plastic extruder, its lower end is connecting left and right runner, part runner, left die cavity and left die orifice on the left side and constitute a material runner, part runner, right die cavity and right die orifice on the right side and constitute another material runner.Plastic pellet is extruded into the double plain film die head by the plastic extruder plasticizing, through left and right two material runners, once extrudes double-deck flat film simultaneously, breaks into monofilament after-drawing, rolling to jacket casing, is made into Polywoven Bag for circular loom.

The utility model has adopted the structure of two runners, two die cavitys and two die orifices, can extrude double-deck flat film simultaneously, so output is the twice of common flat film die.Compare with widening flat film die, saved the folding mechanism of a cover, equipment investment reduces, and die head processing simultaneously is easier than widening flat film die, and it is more easy to control to go out film thickness.

Below with reference to accompanying drawing the utility model is described in further detail.

Accompanying drawing is a structural representation of the present utility model.

For guaranteeing the die head precision and simplifying the die head processing technology, usually die head is divided into the processing of left, center, right mould three parts.With reference to accompanying drawing, left mould (1), right mould (3) are arranged in the left and right side of mould (2) symmetrically separately.Left side mould (1) is made up of 1/2 left die cavity (7), die orifice regulating block (11), adjustment screw (13) and dog screw (15), and right mould (3) is made up of 1/2 right die cavity (8), die orifice regulating block (12), adjustment screw (14) and dog screw (16).Middle mould (2) comprises coupling sleeve (4), left and right runner (5), (6), 1/2 left die cavity (7), 1/2 right die cavity (8) and left and right die orifice (9) (10).Go out film thickness and control, adjust the back and lock with dog screw (15), (16) by adjustment screw (13), (14), die orifice regulating block (11), (12).

Claims (1)

1, a kind of double plain film die head of forming by coupling sleeve, runner, die cavity, regulating block, adjustment screw and dog screw, it is characterized in that having left and right runner (5), (6), left and right die cavity (7), (8) and left and right die orifice (9), (10), the upper end of adapter sleeve (4) links to each other with plastic extruder, its lower end is connecting left and right runner (5), (6), part runner (5), left die cavity (7) and left die orifice (9) on the left side and constitute a material runner, part runner (6), right die cavity (8) and right die orifice (10) on the right side and constitute another material runner.

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