SU973379A1 - Mould for making articles of polymeric materials - Google Patents

Description

(54) CASTING FORM FOR PRODUCTS OF POLYMERIC MATERIALS

one

The invention relates to the processing of polymeric materials and can be used to make articles from them by injection molding.

A casting mold is known, comprising a fixed half-form and a movable one, in which the composite matrix is mounted, the force locking mechanism of the mold is fixed in the fixed plate and interacts with the holes made in the lateral parts of the matrix 1.

The disadvantage of the form is unreliable operation of the gating system, since the material is not supplied in the plane of the connector.

The closest to the technical nature and the achieved effect to the proposed is a casting mold for products made of polymeric materials, containing an immobile runner plate with locking wedges, semi-matrix, sign, semi-matrix opening mechanism, movable intermediate, support plate and ejection plate 2.

However, the known form has insufficient performance due to limited nesting.

The purpose of the invention is to increase the productivity of the mold by allowing the two-way arrangement of the forming nests.

The goal is achieved by the fact that in the injection mold for products made of polymeric materials containing a fixed gating plate with locking wedges, semi-matrixes, a sign, a semi-matrix unlocking mechanism, movable intermediate, support plates and an ejection plate, one of

10 semi-matrixes of each decorating nest are rigidly fixed on the intermediate plate, and the other is mounted with the possibility of transverse movement and is connected with a sign, while the mechanism of opening the semi-matrix is placed on the ejection plate.

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FIG. 1 shows the form in a closed position; in fig. 2 - the same, at the time of pushing products.

Casting mold contains fixed gating plate 1 with locking wedges

Claims (2)

20 2, an intermediate plate 3 with semi-matrix installed on it, the outer semi-matrix 4 of each socket is installed with the possibility of lateral movement due to interaction with the mechanism of opening the semi-matrix, made in the form of columns 5 with bevels, and are connected by a 6 with a sign 7. semi-matrix 8 is fixed. The columns 5 are installed on the ejection plate 9. The base plate 10 is rigidly connected to the intermediate plate 3. The ejectors 11 are spring-loaded relative to the intermediate plate 3 and placed in sign 7. The casting mold works as follows. After filling the forming sockets with polymer melt and technological exposure, the opening of the form, with the locking wedges 2 releasing the half-matrix 4. The ejection plate 9 stops by the stop of the injection molding machine, and the half-matrix 4 is moved by interacting with the columns 5. After A free-running path is selected; the 6 characters 7 are moved on the intermediate plate 3, after which the product separates from the sprues and leaves the semi-matrix 8. With the further movement of the intermediate plate 3, the product collides with the E-pushers from the signs. The use of the proposed form allows to increase the productivity of injection molding equipment. Invention Form Casting for products made of polymeric materials, comprising a fixed gating plate with locking wedges, semi-matrixes, a sign, a semi-matrix disclosure mechanism, movable intermediate, support plates and an ejection plate, characterized in that the possibilities of the two-row arrangement of the forming sockets, one of the semi-matrixes of each decorating nest is rigidly fixed on the intermediate plate, and the other is installed with the possibility of transverse displacement and associated draft type with a sign, wherein the mechanism disclosure jaws placed on the ejection plate. Sources of information taken into account in the examination 1. USSR author's certificate number 579156, cl. In 29 S 1/00, 1976. 2. Molds for thermoplastic products. M., TsNIITE stroymash 1978 with. 275-276, fig. 189 (prototype)