SU1502377A1 - Casting mould for manufacturing polymer articles - Google Patents

Abstract

The invention relates to injection molds for the manufacture of polymeric products. The purpose of the invention is to simplify the manufacture of the mold and increase its reliability in operation. For this, the mechanism for moving the plate 6 of the final ejection is made in the form of a flexible weight 8 associated with it 9, which is located between the plate of the dies 3 and the plate of the preliminary ejection 5. In the plate of the dies there is an L-shaped channel 10 for the passage of the load under the action of force t tinplate When the mold opens, the pre-ejection load moves into the channel 10. As a result of a drop in the load, the final ejection plate moves and, striking the pre-ejection plate, fits the products stuck on the ejector. 3 il.

Description

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The invention relates to the processing of polymeric materials and can be used to make articles from them by injection molding.

The purpose of the invention is to simplify the manufacture of the mold and increase the reliability of its work.

FIG. 1 shows a casting mold, a crumpled position, a longitudinal section; in fig. 2 - the same, the moment of ejection of products (the first stage of ejection); in fig. 3 - the same, at the moment of dropping products from ejector pins.

The casting mold comprises a fixed half-mold 1 and a movable half-form comprising racks 2, a mat 3 and 3 slab, a base 4, a preliminary ejection plate 5, a final ejection plate 6, a shank 7 and a final ejection plate transfer mechanism made in the form of an associated with a plate 6 of the final ejection by means of a flexible pull 8 of the load 9. The plate of the dies 3 has an L-shaped channel 10 for the passage of the load.

The load 9 is located between the plate of the dies 3 and the pre-ejection plate with the ability to move in the channel 10 under the action of gravity. In the pre-ejection plate 5, the pushers 11 and the counter pushers 12 are fixed.

The operation of the mold is carried out as follows.

After injection of polymer mother

ala and required exposure time

40

the mold is opened. In this case, the movable coupling half is separated from the fixed half-mold 1. The shank 7 rests against the support of the injection molding machine and stops the pre-ejection plate 5, and as a result

Q 5

0 5

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five

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products from the matrix plate 3 by ejectors 11. After the pre-ejection plate 5 approaches the load 9, it is moved by the action of this plate, which continues until the load 9 falls into channel 10. Moving in channel 10 Under the force of gravity, the load 9 with the help of a flexible pull 8 causes a sharp movement of the plate 6 of the final ejection, which, acting on the plate 5 of the pre-ejection, prevents the hanging products from the ejectors 11.

When the movable coupling half and the fixed half-form 1 are closed, the fixed-half-form 1 abuts against the counter pushers 12, causing the pre-ejection plate 5 and the final ejection plate 6 to move. The final ejection plate 6 with a flexible rod 8 returns the load 9 to its original position.

Claims (1)

Invention Formula A mold for the manufacture of polymer products, containing a fixed half-form and a mobile half-form, including matrix plates, base, plates of preliminary and final ejection of products and. The mechanism for moving the final ejection plate, characterized in that, in order to simplify the manufacture of the mold and to increase the reliability of its operation, the mechanism for moving the final ejection plate is made in the form of a load connected with the last flexible heavy load, which is located between the matrix plate and the pre-ejection plate , while in the matrix plate is made L-shaped channel for the passage of cargo. YU Editor E. Papp fie. 3 Compiled by V. Shuralev Tehred M. Khodanych Corrector n. Rogulich