SU759319A1 - Press mould for producing polymer articles - Google Patents

Description

The invention relates to the field of plastics processing, in particular to equipment for the manufacture of polymer products by injection molding.

Known mold for the manufacture of polymeric products, containing the matrix and the punch, placed in. holder [1]. Known mold does not allow to produce large: To product. '

Also known is a mold for the manufacture of polymer products, containing a movable and fixed cage with grooves for fasteners 1 * for dies and punches, a base, supporting posts connecting the movable casing and base and plates with ejector pliers [2).

In a well-known mold, making the belts and rings in the cage does not allow the use of large-sized dies and punches in it. In the case of the manufacture of a known mold for the use of large-sized matrixes and punches in a movable holder, made in the form of a solid plate, it is necessary to make holes for the ejectors, which complicates the manufacturing technology · 30

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Press forms. In addition, plates with ejector can sag, since there are no guiding elements to move them.

. The purpose of the invention is to expand the range of use and simplify the manufacturing technology when using large-sized dies and punches, as well as eliminating the deflection of a plate with ejector.

This goal is achieved by the fact that in the mold for the manufacture of polymer products, containing-. a movable and fixed cage with grooves for fasteners for dies and punches, a base, support posts connecting the movable casing and the base, and plates with ejector pins, the base is made with a protrusion located in the center centering the matrix, and the movable cage is made of separate parts In addition, holes for support columns are made in the plates with ejectors.

FIG. 1 shows a movable holder and a projection, top view) in FIG. 2 - section A-A nafig. one.

The mold contains a fixed holder 1 with a punch 2, a movable

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holder 3, made of separate parts, with matrix 4 installed in it, base 5 connected with movable holder 3 support posts b and 7, protrusion 8 centering the matrix, integral with base 5, plate 9c with ejector 10 and central ejector 11. c The plates 9 have holes for supporting posts 7 for the direction of their movement. T-slots for fasteners for fastening the dies and punches in them are made in the movable and fixed collars.

The mold works as follows.

First install the ejector system, then center! the matrix 4 on the ledge 8 and fasten it in the T-shaped grooves of the movable holder 3, and the punch 2 - in the T-shaped grooves of the stationary holder 1 with bolts. After assembling the mold gotbva to work.

This mold ensures the use of dies and punches with different sizes in it, as well as the rigidity of fastening of forming elements.

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Claims (2)

Claim 1. A mold for the manufacture of polymer products containing mobile and stationary holder with paeami under fasteners for dies ³ and punches, base, support posts connecting the movable ferrule and base and plates with ejector, characterized in that in order to expand the range “On the use and simplification of manufacturing technology when using large-sized dies and punches the center of the protrusion, centering 15 matrix, and the movable holder is made of separate parts. 2. The mold according to claim 1, which is based on the fact that in the plates with ejectors, holes for support struts are made.