SU1509268A1 - Casting mould for manufacturing reinforced articles - Google Patents

Abstract

The invention relates to the processing of plastics into products and can be used in the manufacture of products with fittings. The goal is to eliminate the wedging of the ejector plate and to improve the maintainability of the mold. For this purpose, the sleeve 11 with the spring-loaded cams 12 cooperating with the stop 20 located therein and the annular protrusion 23 of the rod 22 spring-loaded relative to this stop is spring-loaded to the additional sleeve 13 connected to the plate of the ejector 9 with the possibility of reciprocating movement. The return spring 18 is located on the sleeve 11. 3 Il.

Description

,

ate

oh o

Md

ABOUT)

00

interacting with the stop 20 located therein, and the annular protrusion 23 of the rod 22, which is spring-loaded relative to this stop, is spring-loaded to the additional sleeve 13 connected to the plate of the ejectors 9 with the possibility of reciprocating movement. Return spring 18 is located on the sleeve P. 3 Il.

The invention relates to the processing of plastics into products and can be used in the manufacture of products with fittings.

The purpose of the invention is to eliminate jamming of the ejector plate and improving the maintainability of the injection mold.

FIG. 1 shows the mold in the original closed position; in fig. 2 - device return at the time of discharge of products from the form (plate ejector in the front position); in fig. 3 - the return device at the time of return of the ejector plates (ejector plates in the original position).

The form contains a fixed gating plate 1, in which the dies 2 are placed, a gating sleeve 3 and guide columns 4, a movable plate 5 with semi-matrix 6 and guide bushings 7, a support plate 8, ejector plate 9 with ejectors 10 placed in them and the sleeve 11 with spring-loaded cams 12, the sleeve 11 is connected to the plate of the ejectors 10 by an additional sleeve 13 and is spring-loaded with a cup-shaped spring 14 relative to it. The sleeves 11 and 13 are interconnected by a pin 15 and can move relative to each other by the amount of clearance B. В The tulle 1 1 can also move along the inner diameter of the ring 16, constantly pressed to the base 17 by a spring 18 and connected by a pin 19 through through longitudinal grooves on the sleeve 11 with the stop 20, relative to which the spring 21 of the rod 22 is spring-loaded with an annular protrusion 23 interacting with cams 12, compressed springs 24, which are regulated by plugs 25. Sleeve 11 is fastened to the cover 26 to hold the brush 22.

Casting form works as follows.

After injection of the plastic melt through the sprue bushing 3 into the mold and hardening it in the matrix 2 and the semi-matrix 6 of the plates 1 and 5, the movable half-form departs from the fixed half-form.

As the movable half-form moves, the brush 22 bumps into the fixed support of the injection molding machine (not shown) and, interacting with the cams 12 through the sleeves 11 and 13, drives the pusher plate 9, and removes the products from the mold. When products are removed from the mold, the stop 20 removes the cams 12 from engaging with the stem 22. Sleeve 11

under the action of the return spring 18 and the spring 14 moves in the direction of arrow A by the amount of clearance B between the sleeves 11 and 13 and hits the sleeve 13 bonded to the pusher plates 9, thereby having a pulling action on the pusher plate 9, while jamming does not occur, since the pulling off action on the plates of the pushers 9 eliminates their jamming. With the further course of the sleeve 11 under the action of the spring 18

return plates ejector 9 to its original position. Then, when the clamping of the mold half begins, and the rod 22 moves away from the stop of the injection molding machine, under the action of the spring 21, the rod moves away in arrow A and, interacting with the cams 12, engages with the sleeve 11.

Claims (1)

Invention Formula Injection molding mold LII with fittings, containing a fixed gating plate, a matrix plate, a support plate, an ejector plate with ejector placed on it and a ejector return mechanism, made in the form of a shank and consisting of a sleeve in which a rod is installed, which is engaged with it by means of spring-loaded cams, with the possibility of interaction with an abutment located on the shank, characterized in that, in order to avoid jamming of the ejector plate and improve maintainability, the sleeve with spring-loaded cams connected with a screw installed in the pusher plate, with the possibility of axial movement relative to the screw, with a spring mounted spring between them, and a ring with a spring-loaded cams installed a ring with a pin rigidly connected to the stop located in the sleeve and entering it longitudinal grooves, with a return spring mounted on the hub bounded by a ring. and fz