SU939167A1 - Multiple injection mould for pressure die casting - Google Patents

Description

The invention relates to foundry, in particular, to the casting of metals and alloys.

The closest known to the present invention is a mold for injection molding, comprising a movable half-form with a spreader mounted movably in the axial direction with the possibility of blocking the gate channels. Under the pressure of the metal, the divider moves and sends the sprue channels to the cavities that make up the castings 1,

A disadvantage of the known mold is the deterioration of the quality of castings with increasing number of nests in the mold.

The purpose of the invention is to improve the quality of castings.

This goal is achieved by the fact that in a press frame for pressure casting containing half-molds with a divider mounted movably in the axial direction with the possibility of blocking the gate channels, the end face of the divider is stepped.

FIG. 1 shows a mold, a general view; FIG. 2 is a section A-L in FIG. one.

The mold consists of a movable and fixed half-form.

The movable semi-final 1 1a contains a 1 removal plate, an ejector plate 2, a support plate 3, a matrix 4 in which the axially movable divider 5 and inserts 6 decorating castings 7 are installed. The rotation of the dissector is limited by the plane

10 plates 8 pushers. The fixed half-form consists of a sprue bushing 9 and a pipe 10. In the movable matrix 4 there are sprue gangs 11 to the cavities of the castings 7, gating

15 channel 12 to the industrial cavity: 1 vnik 13 and ventilation vent 14 to communicate the cavity of the wiper with the outside atmosphere. The casting channels 11 are blocked by a divider 5. In the dissector 20 5, there is a channel 15 with a washer 13 and a ventilation channel 14, the front surface of the divider 5 is made stepped to alternately open the gating channels 11

25 mnogogneednoy molds. The pressing piston 16 is provided with a bevelled surface to reduce the pressure control valve.

The mold works as follows ..

Claims (1)

Claim Multi-cavity mold for 10 injection molding containing half-molds with a divider mounted movably in the axial direction with the possibility of overlapping gate channels, characterized in that 15 that, in order to improve the quality of castings, the end surface of the divider is made stepwise.