SU1184694A1 - Mould for making polymeric articles - Google Patents

Abstract

I. CASTING FORM FOR MANUFACTURING POLYMERIC PRODUCTS, containing a sprue plate, a movable half-form including a matrix plate made with diverting gating channels, a volume plate, a base with fixed punches and a central pusher with a collar, which is designed to reduce metal forms, the form is equipped with a spring-loaded 1.1 m ejector of the central sprue, and in the “central pusher a cavity is made under the ejector of the central sprue, while the central pusher is rigidly connected to the pl oh matrices and mounted to cooperate with a shoulder-cooker with ema. 2. The form according to p. I, distinguished by the fact that in the central (L pusher.) The capture of the gate is made.

Description

The invention relates to the processing of polymeric materials and can be

In the full opening of the slab of the movable half-mold due to the effect, it was used for the manufacture of products with a separation of the sprues.

The aim of the invention is to reduce the metal mold by eliminating the intermediate elements of the extrusion plates.

In FIG. 1 shows a mold in a closed position, a section; in FIG. 2 - the same, in the open position.

The mold contains a sprue plate 1, a movable half-mold including a matrix plate 2 made with distributing 3 and inlet tunnel 4 sprue channels, a removal plate 5, a base 6 with punches 7 fixed therein, and a central pusher 8 with a collar 9, which is installed with the possibility of interaction shoulder 9 with a removable plate 5.

In the central pusher 8, a cavity is made for the ejector 10 of the central gate, which is made with a limiter 11 and spring-loaded. The central pusher is made with the capture of 12 sprues and is rigidly connected to the matrix plate.

The mold is operated by the following spring-loaded pushers installed in the runner, move together. After the central sprue is removed by the catch 12, the focus of the injection molding machine interacting with the limiter 11 moves the pusher 10 of the central sprue, which detaches from the product (in the places of the tunnel inlets) and removes the sprues.

In the course of further opening of the mold, the central pusher 8 stops with the stopper 11, as a result of which the matrix plate 2 stops. Products on the punches 7 are removed from the matrix plate 2 and as a result of the interaction of the 20 collar 9 of the central pusher 8- with the pick-up plate, they are removed from the punches and removed from the mold .

Thus, the central pusher provides movement directly 25 plates - matrixes and removal

Thus, in the proposed invention, the movement of the matrix plates and the removal of the central plunger, as well as 30 placement in it ejected.

After injection of the polymer and technological exposure, the form opens

FIG. 2

VNIIIPI Order 6314/13 Circulation 644 Subscription

Branch of the PPP Patent, Uzhgorod, 4, Proektnaya St. For the central gate, it is possible to exclude intermediate ejection plates, and thereby reduce the metal consumption of the mold.

Claims (2)

I. INJECTION FORM FOR PRODUCING POLYMERIC PRODUCTS, comprising a sprue plate, a movable half-mold including a matrix plate made with distributing sprue channels, a volume plate, a base with fixed punches and a central pusher with a collar, characterized in that, in order to reduce the metal consumption forms, the form is equipped with a spring-loaded ejector of the central gate, and c. the central pusher has a cavity for the pusher of the central sprue, while the central pusher is rigidly connected to the matrix plate and installed with the possibility of interaction with the shoulder with the removal plate. 2. The form of pop. 1, I distinguish g g and I with the fact that in the central pusher, a sprue grip is made. H9WU ^{n ,,} Ti§ 'fm 1