SU1634517A1 - Mould for making drive belts - Google Patents

Abstract

The invention relates to the manufacture of rubber products and can be used to make endless drive belts. The purpose of the invention is to facilitate the maintenance of the mold. For this, the core of the core is made in the form of a solid cylinder 4. The centering element 6 nearest to the pusher 7 is made in the form of a truncated cone. The lower base of the element 5 is rigidly connected to one of the ends of the continuous cylinder 4. At the second end of the continuous cylinder 4, a conical socket is made to interact with the conical surface of the hollow sleeve 6. After vulcanization by the pusher 7, the core is pushed out of the mold. At the same time, the product is pulled from the core and remains in the half-molds 1, 2. 1 sludge.

Description

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The invention relates to the manufacture of rubber products and can be used to make endless drive belts.

The purpose of the invention is to facilitate the maintenance of the mold.

The drawing shows the proposed mold.

The mold contains the upper 1 and lower 2 half-molds fixed on the press plates 3, the core, the core of which is made in the form of a solid cylinder 4. The centering elements 5 and 6 are located along the ends of the core. The pusher 7 is located to the core to move the core . The centering element 6 closest to the pusher is made in the form of a conical hollow bushing having a tapered shank a mounted in a conical seat of a continuous cylinder 4. The opposite centering element 5 is made in the form of a truncated cone with a conical surface b, with a smaller base rigidly connected to one of the solid ends cylinder 4.

The mold works as follows.

On the core 4, the facing fabric is laid, the cord is wound and the elastomer sheet is placed. Then the cylinder 4 with the assembled billet is installed in the lower mold half 2. When the press plates 3 are moved, the mold closes and forms an endless drive belt and cures it. The centering of the molds 1 and 2 relative to the cylinder 4 is carried out on the conical surface a of the left centering element 5 and the cylindrical surface of the right element 6. At the end of the vulcanization process, the pusher 7 is pushed through the hole in the conical shank a on the conical surface b. The product is pulled from the core, held by the adhesion forces on the outer surface with the half-molds 1 and 2. The plates 3 of the press are separated from each other, remain in the bottom half-form, held on the shank of the right element 6. The product is easily removed, right element 6 is mounted on the core. Next, the pressing cycle is repeated.

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Claims (1)

Invention Formula A mold for the manufacture of drive belts, comprising lower and upper mold halves, a core with a cylindrical shaped working part and centering elements at the ends, and a plunger located with the core, characterized in that, for ease of maintenance, part of the core is made in the form of a solid cylinder, the centering element nearest to the pusher is made in the form of a conical hollow bushing, and the opposite centering element is made in the form of a truncated cone, with a smaller base rigidly connected with one of the ends of a solid cylinder, with a conical socket for engagement with the conical surface of the hollow bushing at the second end of the continuous cylinder.