SU844347A1 - Mould for making apertured article of polymeric material - Google Patents

Description

(54) FORM FOR MANUFACTURING A PRODUCT FROM A POLYMER MATERIAL WITH AN OPENING

The modulus of elasticity of plastics is approximately lOiO times lower than the modulus of elasticity of steel.

FIG. 1 image of the proposed form in the position of the pressure shutter; on fit. 2 and 3 are the same in position and x at the stage of removing the product from the forming cavity and from the area of the mold.

The mold for the manufacture of a polymeric material with an opening comprises a lower 1 and upper 2 half-molds. In the half-form / fixed signs 3 and the ejector 4, the motive from the drive (in Fig. Not display).

The hemoform 2 is movable from the drive (not shown in the figures) in a direction perpendicular to the longitudinal axis of the form. In the holes a, which are made in loluform 2 for signs 3, are movably mounted: the rods 5, equal to the diameter of the signs, 3 are connected to the drive for their longitudinal movement (not shown in the figures) by the gear-cutting gear 6.

The form works as follows.

After | Extract the pressure of the formable material in the form of a half-form 2 ОЕ Dats to the extreme upper position, and by the ejector 4, re-fixing it to the extreme upper position, the product 7 is removed from the signs 3.

A drive is then included for moving down the rods 5, which are inserted into the apertures of the product 7, and the drive for moving the elimination mold 2 in a direction transverse to the shape, and then this half-form is brought to the extreme lateral position. After that, the rubbed 5 does not move to the initial extreme polishing, the product 7 is released. The half-form 2 moves to its original position above the half-form /.

Unloading products from the form does not require much effort and time, since

rods, the diameter of which is equal to the internal diameter of the product holes, after pushing it off the marks, freely enter the product holes, providing with them 5 a tight fit in such a way that, as a result of subsequent shrinkage of the product, the forces of friction arise in the connection of the surfaces of the rods and holes, sufficient to hold the product on the rods for a short time at the time of taking them out of the mold and at the same time insignificant to ensure easy discharging of the product from the rods into the hopper.

The use of a form for such a design 5 also improves productivity and improves the ease of maintenance of the press.

 the invention

The form for the manufacture of products from

polymeric material with a hole containing the lower and upper half-molds, a sign and a diverter installed in the lower half-form, with an opening of a half-sign made in the upper half of the form, which, in order to mechanize the removal of the product from the area of the form, the upper half-form it is provided with a rod movably mounted in the hole made in it, and with a drive for reciprocating its movement in a direction perpendicular to the longitudinal axis of the form, the diameters of the sign and the rod being equal.

Sources of information taken into account during eco-performance:

1.Technological equipment for cold shtampovki, pressing-plastics and

pour under pressure. Directory Directory, 1967, h.: 2, p. 92

2. USSR author's certificate number 585073, cl. B (29 C 5/00, 1976 (prototype).

Claims (2)

Claim I A mold for the manufacture of a product from a polymeric material with an aperture containing the lower and upper half-molds, a sign and an ejector installed in the lower half-mold, and a hole for the sign is made in the upper half-> form, which is characterized by the fact that, in order to mechanize the removal of the product from the area of the mold, the upper half-mold is equipped with a rod movably mounted in the hole made in it,> and a drive for reciprocating its movement in the direction perpendicular to the longitudinal axis of the mold, with the diameters of the sign and rod us. > Sources of information taken into account during the examination: 1. Technological equipment for cold stamping, pressing of plastic On injection molding, Directory-Directory, 1967, part .2, p. 92. 2. USSR author's certificate No. 585073, cl. In <29 C ‘5/00, 1976 (prototype). tpur. 7 φι / t.Z Fg / gz A type. Kharkiv. Phil. before "Patent"