SU1216018A1 - Mould for manufacturing ring rubber articles - Google Patents

Description

The invention relates to the manufacture of rubber technical products and is intended for the manufacture of large annular rubber products, in particular seals.

The aim of the invention is to expand the range of sizes of manufactured products.

FIG. 1 shows the proposed mold; in fig. 2 - bottom plate of the mold; in fig. 3 is a view A of FIG. 2

The mold for the manufacture of annular rubber products contains the upper 1 and lower 2 plates with concentric spaced nests 3, diametrically located liners 4 with grooves 5 in the form of semicircles and a guide and 1-font 6. The sockets 3 and grooves 5 form a forming cavity 7 for making Your product.

Between the existing inserts 4, there are additional inserts 8 and 9, installed in the recesses 10, which are made in plates 1 and 2, and having corresponding profile grooves 11 and 12, which can be made in the form of arcs of circles or half-cavity ring shape, and twisted in the eight.

The inserts 4, 8, and 9 may have shaped grooves corresponding to all areas of concentric jacks lying in the sector of angle a, in which case the number of sizes of rings produced increases.

The mold can be equipped with several additional liners 8 and 9 with grooves 11 and 12, respectively

10 in the form of arcs of circles and semicircles, which during operation of the mold can be installed in the plates in any combination. For example, in plates instead of liner 9, a second liner 8 with grooves 11 can be installed,

 or the liners 8 can be installed instead of one pair of main liners 4. The liners 8 with grooves 11 can be installed in all the grooves of the plates, while the forming cavity is formed concentrically

2Q spaced nests in the shape of circles. Conic surfaces 13 are used to center the plates 1 and 2. Such a constructive implementation of the mold allows it to expand its operational capabilities in single and small circles. Inserts 4, 8 and 9 are 25 serial production.

The mold works as follows.

The mold is prepared for operation by installing the necessary basic 4 and additional 8 and 9 inserts. A rubber blank is placed in the forming sockets of the bottom plate 2. By means of the guide pin 6 and the conical surfaces 13, the upper plate is mounted on the lower plate 2 of the mold. Next, the assembled mold is placed on the plates of the vulcanization press, where Angle a. depending on the formation and vulcanization of the ring collar size, the smaller the size. The ratio of the diameter D of the semicircle of the liners to the cross section of the ring d is chosen from the ratio, since if this is not observed, the ratios are mutually interchangeable, while the outer sides of the liners 8 and 9 form an angle a, like the outer sides of the liners 4.

The centering of the inserts on the plates is carried out by means of protrusions 13, made on the plates, and hollows 14, made on the inserts.

The number of grooves 10 and additional liners 8 and 9 may be different depending on the sizes of manufactured products.2

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the final product, after which the mold is unloaded, the finished product is removed and then the cycle is repeated. If it is necessary to obtain products of other sizes, the main or additional liners are replaced.

no charge

the cavity is shaped like a ring, and twisted into a figure eight.

The inserts 4, 8, and 9 may have shaped grooves corresponding to all areas of concentric jacks lying in the sector of angle a, in which case the number of sizes of rings produced increases.

The mold can be equipped with several additional liners 8 and 9 with grooves 11 and 12, respectively

in the form of arcs of circles and semicircles, which during the operation of the mold can be installed in the plates in any combination. For example, in plates instead of liner 9, a second liner 8 with grooves 11 can be installed,

or the liners 8 can be installed instead of one pair of main liners 4. The liners 8 with grooves 11 can be installed in all the grooves of the plates, while the forming cavity is formed concentrically

nests in the form of circles. The conical surfaces 13 are designed to center the plates 1 and 2. Such a constructive implementation of the mold allows it to expand its operational capabilities in single and small-scale production conditions.

The mold is prepared for operation by installing the necessary basic 4 and additional 8 and 9 inserts. A rubber blank is placed in the forming sockets of the bottom plate 2. By means of the guide pin 6 and the conical surfaces 13, the upper plate is mounted on the lower plate 2 of the mold. Next, the assembled mold is placed on the plates of the vulcanization press, where the molding and vulcanization of the ring

the final product, after which the mold is unloaded, the finished product is removed and then the cycle is repeated. If it is necessary to obtain products of other sizes, the main or additional liners are replaced.

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VNIIPI Order 946/20 Circulation 640 Subscription Branch of the PPP "Patent, Uzhgorod, ul. Project, 4

Claims (3)

1. PRESS FORM FOR MANUFACTURE OF RING RUBBER PRODUCTS, comprising upper and lower plates with concentric nests and removable liners with grooves in the form of semicircles forming a cavity with nests, characterized in that, in order to expand the range of sizes of the manufactured products, it equipped with additional inserts with profile grooves located in the recesses, which are made in plates in the gap between the existing inserts, and the existing and additional inserts are made imozamenyaemymi. 2. Mold according to π. 1, characterized in that the profile grooves are made in the form of circular arcs. 3. Mold according to π. 1, characterized in that the profile grooves are made in the form of semicircles. V y 2 12 G figure 1>