SU761270A1 - Module for pressure-moulding of polymeric articles - Google Patents

Description

The invention relates to the molding of plastics and can be used in the foundry of metals.

Known blocks for molds containing movable and fixed mounting plates, mounting and fixing elements [1].

In these blocks, the mold fixing elements are made in the form of clips, the size of which is designed only for a certain size of the mold.

The closest technical solution to the proposed is a unit for molding injection molding of products from polymeric materials, containing a movable and fixed mold mounting plate and locking elements [2].

In the known block, the mold plates are installed between the upper and lower plates and bolted, which leads to additional time costs.

The purpose of the invention is to reduce changeover time.

This goal is achieved by the fact that

in the block for molding injection molding products from polymeric materials,

2

It contains movable and fixed plates for mounting the mold and locking elements, locking elements made in the form of eccentric cam stops and latches installed on the axes of the fixed plate, each fitted with a leaf spring in contact with the cam stop.

FIG. 1 shows the design of the unit; in fig. 2 - a block with a mold.

) 0 The injection molding unit contains a movable 1 and a fixed 2 mounting plate.

On the movable 1 mounting plate rigidly fixed locking elements 3, made in the form of guide rails, stop 4, mounting L-shaped hinges 5 and a spring-loaded shank 6. On a stationary 2 mounting plate fixed guide bars 7, the stop 8, mounting L-shaped hangers 9 and locking elements made in the form of eccentric cam stops 11 and latches 12 mounted on the axes 10 of the fixed plate, each fitted with a plate spring 13 in contact with the stop.

761270

- The unit works as follows.

> First, the movable mold plate in the closed position is pushed into the grooves of the fixing elements 3 of the movable plate, while the shank 14 of the mold 15 fits into the groove of the shank 6 of the block, connecting ₅ with it.

Then the injection molding machine is turned on. The mold moves to the fixed 2 mounting plate and resting on the latches 12 rotates them around the axes 10.

During the subsequent movement, the press form, guided and centered by the stop 8 n by the guide bars 7, presses the eccentric cam stops 11, which, turning around the axes, deform the plate spring 13, creating an additional force of latching. Next, the mold continues to move all the way into the fixed 2 mounting plate, and the latch 12, snapping in, fix the fixed part of the mold. The fasteners 5 and 9 mold is mounted in the block.

viv “During the operation of the injection molding machine, when the mold is opened, its fixed part is pressed against the latches 12 by eccentric cam stops 11 and the gap“ Ζ ”necessary for snapping ,, is selected, thereby eliminating the possible bias of the fixed part of the mold .

Removing the mold from the block is produced in a closed or open position, pushing them out of the locking elements 3 and the latches 12, respectively.

The design of the unit allows you to install all the main types of quick-change injection molds in it.

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Claims (1)

Claim Block for molding by injection molding products from polymeric materials, containing movable and fixed mold attachment plates and fixing elements / characterized in that, in order to reduce changeover time, ¹⁵ fixing elements are made in the form of eccentric cam stops mounted on the axes of the fixed plate and latches supplied with each leaf spring in contact with the cam 20 stop.