SU1248836A1 - Casting mould for polymeric articles - Google Patents

Description

The invention relates to the processing of polymeric materials and can be used in the chemical industry for the manufacture of long products with protrusions or undercuts on the outside.

The purpose of the invention is the expansion of the technological capabilities of the injection mold by ensuring the manufacture of products with deep holes in the plane of the connector format.

Fig, 1 shows whether it is closed--. Tue form, longitudinal section j in FIG. 2, view A in FIG. 1 (throwing the movable part of the mold along the plane of the connector in FIG. 1); in fig. 3 is a view B in FIG. 2, FIG. 4 is a section B-B in FIG. 3.

The casting form contains; "It is movable 1 and fixed 2 forms) with semi-matrices 3 and 4, traverse 5, connected with a pair of levers 6 on each side of the form with brackets 7 fixed 2 and movable 1 gum shape, station 8 with sleeve 9 the removal, connected with semi-matrix 3 and 4 of the first 1 in the form of two parts, the part of the rod 10 is installed parallel to the longitudinal axis of the form, and the ends of the parts of the rod 10 are located in the movable 1 and fixed 2 half-molds.

 In traverse. 7, a 1t sign is fixed to a long long hole. On the pusher 8, dovetail-type grooves 12 are directed, which include corresponding protrusions of the sliders 13 located between the half-matrices 3 and 4. Slides 13 form undercuts in the product; and the insignia 14 mounted on the slides draw deep holes in the product, the axes of which are located in the plane of the forg-o-connector. The sliders 13 of the axles 15 are connected pivotally to the lever-gt 16, which, in turn, are pivotally connected to the brackets 17 Noah 1 and fixed 2 half-form,

A sprue bushing 18 is installed in the non-dim half-form 2. In the mobile half-form 1 in the axial bore of the shank 19 with the sleeve 20 and the nut 21, the extractor 22 is fixed. under the influence of the melt is prevented

1Paimo, with the action of bevels 24 semi-mat-pi-tu 3 and 4 and bevels 25 colliders 8. The mold is as follows,

After injection of the polymeric material and technological exposure, the opening is made, with the movable half-form 1 moving at a distance i - L, and the traverse 5

at that, with the help of levers 6 it rises to the distance e, due to which the sign 11 is removed from the product. At the same time, by diluting the hinges of the levers 16 by i-S-i

5, the sliding of the sliders 13 at a distance c in the groove 12 of the pusher 8 occurs. Thanks to this, the signs 14 ВЕ:, гх: one of the product. The ratio of the lengths of the levers 6 and 16 is chosen in such a way.

This is because the movement of signs of the products (distance a.) Is greater than the extension of the sign 1 1 (distance e), thereby preventing the product from sticking on one of the signs 14,

5 in order to reveal the shape, the shank 19 runs onto the support of the injection molding machine (not shown), moves relative to the extractor 22 and tears the sprue from the head of the latter.

0 By using hollow tails-. The sprocket 19 and the extractor 22 embedded in it extract the sprue from the sprue bushing and discharge the sprue is forced, which rams the operation of the mold in an automatic one.

The opening of the form is limited to the heads of the gigi 10. After the forti closes, the cycle repeats.

0 The use of the invention allows to expand the technological capabilities of the injection molding, in particular, it allows casting lengthy products with deep undercuts and rotates located along the axis of the mold and in the plane of the forms' connector), moreover, the reliability of extracting the sprue from the casting sleeve and dumping it from the extractor thanks

0 the presence of a forced device-hoztovik.

In the particular case of a product, the handle of a shovel can be shaped as 5 sk: a side of the hole, depth: which is three times the size of a hole, decorated with a vertical sign.

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Editor A. Shandor

Compiled by L. Koltsova

Tehred V, Kadar Proofreader L. Pilipenko

Order 4175/15 Circulation 640 Subscription

VNRSHPI State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (1)

INJECTION FORM FOR POLYMERIC PRODUCTS, containing movable and fixed half-molds with half-matrices, · connected by a pair of levers from each FIG. 1 side of the mold, the product collider and the link connected to it, mounted parallel to the longitudinal axis of the mold, and the ends of the link are located in the movable and fixed half-molds, characterized in that, in order to expand the technological capabilities of the injection mold by ensuring the manufacture of products with deep holes in the plane of the mold connector, it is equipped with sliders with signs for forming holes fixed on them, placed in the flatness of the mold connector, and guide grooves for the slider are made in the tailor in which are provided with levers pivotally secured to mold halves. SU .... 1248836