SU923864A1 - Casting mould for producing plastics articles - Google Patents

Description

The invention relates to the processing of plastics and can be used in the manufacture of these products in injection molding machines. - '

Known mold comprising movable and fixed polufor- ⁵ we face playku and its drive, configured as a fixed die fixed to the shaft with a screw groove and connected to the pusher sleeve with a pin interacting with helical groove, and thrust, with placed in it sleeve, and the thrust is rigidly connected with the movable half-form of the joint venture. .

The closest to the proposed is a mold for the manufacture of plastic products, comprising a sprue plate and a movable plate, one of which is installed - ₂₀ lena pivotally faces strap, and strap drive faces configured as a transmission zubchatoreechnoy Γ2Ϊ.

2

A disadvantage of the known mold is the complexity of the design of the drive strips, pushing the sprue and stuck on the ejector products.

The purpose of the invention is to simplify the design of the drive.

This goal is achieved by the fact that in the injection mold for the manufacture of plastic products containing gating plate and movable plates, one of which is installed with the possibility of rotation of the pushing bar, and the drive of the pushing bar, the drive of the pushing bar is made in the form of an elastic element fixed in one from movable plates, and a copier fixed in the gating plate, and the elastic element interacts with a bevel made in the shoulder of the pushing bar.

FIG. 1 shows cast

form in the open position; on

FIG. 2 - also in the closed position.

3 923864 4

The mold for the manufacture of plastic products contains a fixed gating plate 1, with a drive element fixed in it — copier 2 and movable plates 3 and 4. In 5 of the movable plate 3 of the skem, stops 5 are installed, and also in the upper part with the possibility of rotation - pushing bar 6 on axis 7.

On the movable plate 4 fixed 1® punches 8 and the elastic element 9 of the drive.

Injection form works as follows.

During removal of the movable plates of the mold-15 form, the jogger 6 is held in a horizontal position by an elastic element 9.

With further progress, the movable plate 3 removal rests on the stops of the injection molding machine 20 and stops, and the plate with the elastic element 9 continues to move. This is the removal of products from punches, and with further movement of the plate 4, the elastic element 9 25

releases the shoulder of the pushing bar 6, which rotates around the axis 8 and knocks over the stuck products and the sprue.

When the form is closed, the colliding pin 6 with its short shoulder, interacting with the curved part of copier 2, makes a turn in the opposite direction and is fixed by an elastic element. The fixation is ensured by performing a bevel on the shoulder of the pushing bar.

The use of the proposed mold allows to obtain a positive effect by simplifying the design of the drive of the collision bar.

Claims (1)

Claim An injection mold for the manufacture of plastic products, containing a gating plate and movable plates, one of which is equipped with a pivotal pusher bar and a pusher bar actuator, distinguished by the fact that, in order to simplify the drive design, the pusher bar actuator is in the form of an elastic an element fixed in one of the movable plates, and a copier fixed in the gating plate, and the elastic element interacts with a bevel made in the shoulder of the pushing bar.