SU1159792A1 - Casting mould for manufacturing hollow long-size polymeric articles - Google Patents

Abstract

A CASTING FORM FOR THE MANUFACTURE OF LONG-DIMENSIONAL HOLLOW POLYMERIC PRODUCTS, containing movable and stationary half-molds, forming a sign, the longitudinal axis of which is located in the plane of the form connector, and an ejection system, different in that, in order to increase the performance of the mold form by increasing the number of molds, each one has one heat pipe, which is different from one piece of molds, which is different from one piece of molds, in the case of molded molds, and each one has more than one piece of molds. the fixed half-form is provided with two wedge gating inserts with a plane of their closure, perpendicular to the longitudinal axis of the forming sign and the plane of the connector of the form, than the gate insert are biased toward the movable mold and are provided with fingers of sensing arranged in grooves which are formed in the stationary mold half. WITH 01 with; about 1chE

Description

The invention relates to the processing of plastics in the product and can be used for the manufacture of long hollow products using the casting method by pressure in mechanical engineering, in the chemical industry.

The purpose of the invention is to increase the productivity of the mold by increasing the number of simultaneously molded products.

FIG. 1 shows a casting form in a closed state, a longitudinal section; in fig. 2 - view of the fixed half-form from the side of the plane of the connector; in fig. 3 shows section A-A in FIG. 2; in fig. 4 is a section BB in FIG. 2

The casting mold for the manufacture of long hollow polymer products contains a stationary half-form 1 with an inclined column 2, a movable half-form 3 in which the insert 4 with the stirring, a slider 5 in it, interacting with the inclined column 2, is formed, its sign b with a longitudinal axis, located in the plane of the connector shape, hinged in slider 5, ejection plate 7, on columns 8 of which the insert 4 is rigidly fixed. In the fixed form 1 there are wedge gates 9 and 10 interlocking along the plane, n rpendikul longitudinal axis b of the forming plate and the plane shape connector. In the gating inserts 9 and 10, the fingers 11 are fixed, placed in the copy grooves 12, made in the fixed half-mold 1, while the gating inserts 9 and 10 are spring-loaded with springs 13 in the direction of the movable half-form 3.

Casting form works as follows.

After filling the mold cavity with the polymeric material, the mold is opened. In this case, the inclined column 2, interacting with the slider 5, partially removes the forming sign b from the internal cavity of the product. Since there is a cone on the forming mark b, it completely comes out of contact with the inner surface of the product. At the same time, the wedge gates 9 and 10 are pushed out of the fixed half-form by the action of the springs 13. Due to the interaction of the fingers 11 with the copy grooves 12, the wedge gates 9 and 10 are at the start

0 in a somnoe state, and then consumed, freeing the gating system. Upon further movement of the movable part of the mold, the stop of the molding machine drives the ejection system plate 7, and with it the insert 4 with the slider 5 and the forming sign b placed in it, which separates the outer surface of the product from the design surface of the movable half-form 3, after What is the self-discharge of the product from the forming mark b

- When the injection mold is closed, the oblique column 2, interacting with the slider 5, exposes the last and forming sign b, to its original position, and the movable half-form 3, interacting with the wedge gates 9 and 10, sets

5 to their original position flush with the fixed half-form 1. Then the cycle repeats. The proposed mold design provides a more rational use of the area of the "mirror of the mold, since

0 allows placing another molded product in the symmetry axis of the mold. In addition, the presence of wedge gating inserts, providing the location, distributing sprues in the plane, perpendicular to the axis of the forming sign and the plane of the connector

molds, allows on both sides of the axis of symmetry of the shape mirror to locate more than one molded product without significantly increasing the length of the sprues.

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Claims (1)

Injection mold for the manufacture of long hollow POLYMERIC PRODUCTS, containing a movable and fixed half-mold, a forming sign, the longitudinal axis of which is located in the plane of the mold connector, and an ejection system, characterized in that, in order to increase the productivity of the injection mold by increasing the number of simultaneously molded products, the fixed half-mold is equipped with two wedge gating inserts with the plane of their closure perpendicular to the longitudinal axis of the forming sign and the plane of the mold connector, and the gating inserts are spring-loaded in the direction of movement and second mold halves are provided with fingers of sensing arranged in grooves which are formed in the stationary mold half. FIG. 1 SL СО ^ 4 SO y