SU910440A1 - Mould for producing articles of foamed materials - Google Patents

Description

(5t) FORM FOR MANUFACTURING PRODUCTS FROM SPELLABLE MATERIALS

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The invention relates to devices for processing plastics into articles and can be used for the manufacture of products from expandable polymers, for example, SPPU polyurethane foams: -

The known form for the manufacture of articles made of expandable materials, comprising a stationary half-form, a movable half-form with a punch attached to it, and heating elements of the HP. .

The disadvantages of this form include the uneven heating of the form with heating elements, high energy costs and the low quality of the manufactured products.

Also known is the form for the manufacture of articles made of expandable materials, comprising a fixed base with hinged walls, a lid with a punch, forming a cavity-forming product and heating elements 12.

This form is the closest to the technical essence and the achieved result of the present invention.

The disadvantages of this form are the high energy costs for heating the form, the uneven and low heating efficiency and the low quality of the products.

The aim of the invention is to save energy by heating and improving the quality of the products.

This goal is achieved in that in the form for the manufacture of products from expandable materials, containing a fixed base with hinged walls, a lid with a punch, forming a cavity-forming product, and heating elements according to the invention, the heating elements are made in the form of uniformly installed in the base, the walls and the punch along the perimeter of the cavity of the product of infrared radiators with concentric external and internal transistors forming a slit gap, This is through a fitting with air supply ducts. FIG. 1 shows a general view of the form; in figo 2 node 1a figa 1o. The form for the manufacture of products from expanding materials comprises a stationary base 1, to which steamers are attached. 2 ”A cover 3 with a punch L is installed on these walls. Inside the form, around the perimeter of the cavity, the refrigerator with the inner chamber 6, the heating elements 7 are located. On the outer surface of the mold there are nozzles 8 for supplying air to the channels 9. The heating element -7 (see, Fig. 2) consists of an infrared emitter 10, an internal reflector 11, isol insulating layer 12, the outer reflector 13 and the fitting, wherein otrah STUDIO arranged concentrically with a gap in communication via the connection 1k with channels 9 for air supply. The form works as follows. When raising the lid 3 with the punch 4 into the fixed base 1 with the hinged walls 2, the product is installed — the outer cabinet 5 of the refrigerator, and then the inner chamber 6o. When the desired temperature is reached on the surface of the product, the heaters are turned off and the mixture is injected into the polyurethane-polyurethane insulation. To reduce heat loss when the heating elements are operated, a slit gap between the outer reflector 13 and the inner reflector 11 with the insulating layer 12 is fed through the fitting 1 to transfer the reflected heat from the outer reflector 13 to the product. After foaming and curing the polyurethane foam insulation of the product. It is removed from the mold. The invention allows to reduce the heating energy consumption, improve the uniformity and efficiency of the heating and the quality of the manufactured products. Claim of the invention Form for making products from expandable materials, comprising a fixed base with hinged walls, a lid with a punch, forming a cavity-forming product, and heating elements, characterized in that, in order to save heating energy and improve the quality of products, heating elements made in the form of uniformly installed infrared emitters with concentric external and internal branches along the perimeter of the cavity-forming product at the base, walls and punch recipients forming a gap between them, communicating through the nozzle with air supply channels. Sources of information taken into account in the examination 1. USSR author's certificate N-6ij8A24, cl. On 29 D 27/00, 1976. 2o Godilo P.V. and others. Bespressovy foams in building structures. Stroyizdat, Mo, 19b9, with. 43 (prototype) ..

Claims (1)

Claim The form for the manufacture of products from expandable materials, containing a fixed base with hinged walls, a lid with a punch, forming a cavity-forming product, and heating elements, characterized in that, in order to save heating energy and improve the quality of products, the heating elements are uniformly shaped installed in the base, walls and punch along the perimeter of the cavity-forming product of infrared emitters with concentric external and internal reflectors forming between Bore a gap, communicating through the fitting with the channels for air supply.