SU1351801A1 - Arrangement for manufacturing hollow rubber articles opened at both ends - Google Patents

Abstract

The invention relates to the manufacture of rubber technical products and is intended for the manufacture of hollow rubber products open to both tords, in particular cylindrical sealing cuffs with flanges flanged to the dentrule. The purpose of the invention is to simplify the design of the device in the manufacture of small-sized products. For this, the rod 5 is installed in the central hole q of the core 3 and is connected with the smaller base of the liner 4. On the larger base of the liner 4, a centering protrusion 1H of the projection d is made to interact with the lower half-form 2. After the end of the vulcanization of the product 7, the upper half-form 1 is removed and the fitting 6 is connected to compressed air supply means. Compressed air through the channel b in the rod 5 enters the separation cavity c. Under the action of compressed air, the core 3 moves upward along the rod 5 and is removed from the product 7. 2 Il. SS SL Sool 00 (rig.1

Description

The invention relates to the manufacture of rubber technical products and is intended for the manufacture of hollow rubber products open at both ends, in particular cylindrical sealing cuffs with mouths flanged to the center.

The aim of the invention is to simplify the design of the device in the manufacture of small-sized products.

FIG. 1 shows the proposed device in the working position; in fig. 2 is the same in the extraction position of the finished product.

A device for making hollow rubber products open at both ends contains a split mold with a top 1 and a bottom 2 half-molds and a core 3 mounted with relative axial movement and a core 4 located in its lower part. The surfaces of the core 3 and the insert 4 are a truncated cone facing a large base to the lower half-form 2. Moreover, the diameter of the larger base of the liner 4 is smaller than the diameter of the core. The core 3 has a central hole o in which a central rod 5 is installed, rigidly connected to the smaller base of the liner 4. The central rod 5 has a channel b for supplying compressed air to the separating cavity c located between core 3 and the liner 4. At the upper end of the rod 5 there is a fitting 6 for connection to a means for supplying compressed air (not shown). On the larger base of the insert 4, a centering projection d is formed to interact with the bottom half-form 2.

The mold works as follows.

In the lower mold half set in the Assembly of the liner 4 and the core 3 and place the workpiece from the raw rubber mixture. Then, the upper mold half is installed and the mold is placed in a vulcanization press, where the hollow product 7 is molded and vulcanized. At the end of the vulcanization of the mold remove

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The cabin is removed from the press, the upper mold 1 is removed and the fitting 6 is connected to the means for supplying compressed air. This tool creates an axial force that prevents the axial movement of the liner 4. After this, compressed air is supplied, which through channel b enters the cavity c. Under the action of pressure developed in this cavity, the core 3 moves up along the rod and is withdrawn from the product 7 held by the liner 4 in the mold half 2. Then the core 3 with the insert 4 is removed from the mold. The product 7 is easily removed from the insert 4. Then the process repeats.

In the proposed device, no special drive means are required to remove the finished product from the mold, since the product is removed from the core only with the help of air, which significantly simplifies the device design.

Claims (1)

Invention Formula A device for making hollow rubber products open at both ends, comprising a split mold, a core mounted with relative axial movement and a contribution placed in its lower part, having a connector surface in the form of a truncated cone that faces a large base facing the bottom half of the mold a bore and central core rigidly connected to the liner with a channel for supplying compressed air to the separator located between the core and the liner th cavity, distinguishing with the fact that in order to simplify the construction of the apparatus in the manufacture of small HVD products rod mounted in the central opening of the core and is bonded to lower base vkladsh1a, but on a larger basis of the last executed spigot for engagement with the lower mold half of the mold. fpu2.2