SU1435470A1 - Mould - Google Patents

Abstract

This invention relates to injection molding plastics. The goal is to increase reliability; forms. For this, the constituent parts of the matrices 11, 12. Gs i; The pullers 15, 14 of products, made in the form of a plate of removal, are successively interconnected by means of thongs and placed in the guides. The guides are not connected with the columns by pushing the slab 7. The punches 17 enter the holes with a puller and are placed in additional guides fixed,; -; x on the base plate 5. 1 zpfl, 4 silt

Description

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The invention relates to the processing of injection-molded plastics, in particular to molds with several vertical connector planes, used for the manufacture of articles with undercuts,

The purpose of the invention is to increase the reliability of the form.

FIG. 1 shows a casting mold, a longitudinal section; in fig. 2 - movable part of the form, plan; in fig. 3 is a section A-A in FIG. 2; in fig. 4 is a section BB in FIG. 2

Casting .form contains fixed and movable parts. The fixed part of the mold includes a gating plate 1, a locking plate 2 with gating bushings and inclined columns 3 fixed in it. The movable part includes the base 4, the supporting plate 5 on which the guides 6 are fixed. an ejection consisting of an ejection plate 7, to which a shank 8 is fixed on one side and a column 9 on the other side connecting the ejection plate to the guides 10. But the latter have the ability to move the components of the dies 11 -13, etches. mly - luyushchy external surface of the article, and the pullers 14 and 15 products, made in the form of plates removably. In the component parts of the dies 11 and 13, the pins 16 are secured, which fit into the grooves made in the plates 14 and 15 of the removal. In the latter, holes are also made, in which punches 17 enter, the bases of which are placed in guides 6 with the possibility of moving in them.

Casting form works as follows.

After the melt is injected through the sprue bushing of the gating plate I and the gating inlets of the locking plate 2 into the molding cavities and the corresponding pressure extractor, the injection mold is opened.

In this case, the movable part of the form initially carries the lock plate 2 behind it, which, when moving away from the runner plate I, tears the sprues from the products, and then with the help of the plate and the system, the pulls them off from delays (not shown).

Upon further movement of the lock, the plate 2 stops, and the inclined columns 3, interacting with the inclined holes of the constituent part of the matrices 11, move it along. guide 10 away from the axis of the mold, freeing one side of the outer surface of the outermost row of products. At the same time, the pin 16 fixed in the component part of the dies 11 selects a gap in the slot of the removal plate 15 and entrains it, and with it the punch 17, which, together with the product, moves away from the component part of the matrix 12, moving in the guides 6 and freeing the second the side of the outer surface of the product is part of the matrix 12. At the same time, in the second slot of the removal plate 15, a gap is selected between the walls of the groove and the pin fixed in the component part of the matrix 12, and the latter is also carried away, freeing the outer surface of the next row of products. The second pin of the component of the dies 12 selects a gap in the slot of the plate 14, removes it, and in place of it the product and the punch, freeing the second side of the outer surface of the next row of products from the component part of the dies 13.

Thus, the movement of the elements, the shape, takes place until the outer surfaces of all the products are released and the punches with the products are placed strictly between the constituent parts of the dies. E: this moment is inclined column 3 completely out of the inclined hole of the constituent part of the matrix 11.

Continuing the movement, the movable part of the mold stays with the shank 8 on the fixed support of the injection molding machine and the ejector plate 7 stops relative to the moving part of the mold that continues to move. Together with the pushing plate, the guides 10 connected to it by the columns 9 and installed in the guide plates 14 and 15 are removed, which remove the products from the punches 17 and drop them.

When the injection mold closes, all its elements return to their original position in reverse order, and the cycle of operation is repeated.

The present invention allows for the removal of products with a plate for removal, which ensures more reliable operation and facilitates the technological capabilities of the injection mold. In addition to TOi O, in such a form it is possible to manufacture as many product ranges as the technological capabilities of an injection molding machine allow.

Claims (2)

Invention Formula I. Casting mold containing gating plate, installed with the possibility of limited movement in guides detachable in vertical planes sequentially interconnected by means of connecting pull-outs, components of the dies and a punch, force closing mechanism of the components of the dies with a punch, ejecting plate, supporting plate, pullers products with punches. And the base, characterized in that, in order to increase reliability of operation, the components of the dies and pullers products, made in the form of a plate, are connected in series with each other by means of traction and placed in guides connected by columns with an ejector plate, and punches enter the hole of the product pullers and are placed in additional guides attached to the base plate. 2. Casting mold according to claim 1, characterized in that the ha is made in the form of a pin fixed in part of the matrix with the ability to move in grooves made in the removal plate. 9G .J figl b-.v