SU1380986A1 - Melting cylinder of machine for treating thermoplastic materials - Google Patents

Abstract

The invention relates to the processing of plastics by injection molding. The goal is to improve the quality of products by cooling the mold by drying during injection. For this, at the end of the body 1 of the melting cylinder a spring-loaded plate 6 is installed with the possibility of axial movement, equipped with a cooling system 7. 2 sludge.

Description

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The invention relates to the processing of plastics by the method of casting under pressure and can be used in the manufacture of products from thermoplastic polymeric materials under conditions of small-scale and individual production.

The aim of the invention is to pivot the guide screws 5 all the way up to its abutment with its thermal insulating gasket 11 in the end face of the housing 1. The casting mold 3 is pressed against the plate 6 and the feed valve 2. At the same time, the casting is cooling.

the quality of the product by cooling form 3 from the plate 6, into the channels 7

Removable NIN form directly during injection and holding of the melt under pressure.

FIG. 1 shows a diagram of a melting cylinder; in fig. 2V, section 5, section A-A in FIG. one ,

The melting cylinder of the machine for processing thermoplastic materials comprises a housing 1, a feed valve 2 located therein, which supplies melt 20 to the injection mold 3, and a heating device 4. At the end of the housing 1, the screws 5 are mounted with axial displacement 25 plate 6, in which cooling channels 7 forming the CHCTeNfy with discharge 8 and drain 9 nozzles are made. On the guide screws 5, the installation of which continues to flow cooling. After the melt is aged under pressure, the casting mold .3 is retracted from the feed valve 2, the springs 10 move the plate 6 along the guides to the screws 5, creating a gap between it and the front of the body 1, filled with spirit. The product is then removed from the mold 3 and the cycle is repeated.

Equipping the cylinder of a tire for processing thermoplastic materials with a plate with a cooling system allows cooling of the mold form directly during injection and holding of the melt under pressure, which ensures the desired temperature of the injection mold, as a result. e. decreases

The springs 10, which take away the plate 6 from the surface roughness of the spring, do not work with the surface 1 and create a gap between them. On the slab 6 on the side of the corgus 1, there is a heat insulating gasket 1 1.

The proposed melting cylinder works as follows.

The thermoplastic material is loaded into the inside of the housing 1, the heating device 4 is turned on and the material is melted. At this time, through the discharge port 8, a cooler starts to flow into the channels 7, cooling plate 6 and then draining through pipe 9. Moving to the valve ry 2, the mold 3 comes into contact with plate 6 and begins to cool from it. With further movement of the mold 3 plate 6, compressing the spring 10, also

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which continues to flow cooler. After the melt is aged under pressure, the casting mold .3 is retracted from the feed valve 2, the springs 10 move the plate 6 along the guide screws 5, creating a gap between it and the end of the body 1 filled with air. The product is then removed from the mold 3 and the cycle is repeated.

Equipping the cylinder of the thermoplastic materials processing machine with a plate with a cooling system allows the mold to be cooled directly during the injection and holding of the melt under pressure, which ensures the temperature conditions set for the mold, resulting in an increase in the quality of the molded products, i.e. decreases

sinks and utensils are on the articles and their shape is not distorted.

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Claims (1)

Invention Formula The melting cylinder of the thermoplastic materials processing machine, comprising a housing, a heating device and a feed valve, is characterized in that, in order to improve the quality of the products by cooling the removable mold directly during the injection and holding of the melt under pressure, it is equipped with a cooling system, mounted in the plate of the body mounted on the end face with the possibility of axial movement. FIG. 2