SU441162A1 - Device for molding and vulcanizing tires pneumatic tires - Google Patents

Description

one

The invention relates to the manufacture of pneumatic tires and is intended to form and cure pneumatic tire tires.

A device for molding and vulcanizing pneumatic tires tires comprises an upper and lower half-form, an elastic diaphragm mounted on a movable disk having an annular cavity for accommodating the diaphragm, and means for connecting to a vacuum line and a heat transfer line.

However, in the known device it is not possible to precisely set the diaphragm in accordance with the equatorial plane of the tire blank, which leads to uneven molding and misalignment of the tires, especially the low-layered ones.

In order to ensure accurate installation of the diaphragm in accordance with the equatorial plane of the tire blank in the proposed device, the disk is mounted on adjustable guides and spring-loaded relative to one of the half-molds.

FIG. 1 shows the proposed device; in fig. 2-5 - the same, different positions during operation.

The device contains a fixed lower half-form 2 fixed on the bed 1 and a movable upper half-form 3. In the fixed bed 1 of the sleeves 4 there are mounted adjustable guides 5 on which the disk 6 with an annular cavity is mounted for vertical movement to accommodate an elastic diaphragm 7, the ends of which mounted on the disk 6 by means of rings 8 and 9. On the guides 5 between the brackets 10 of the disk 6 and the sleeves 4 springs 11 are placed. The disk 6 is equipped with a telescopic connection 12 for connection with a vacuum line and the coolant supply line.

The operation of the device is as follows.

After opening the upper half of the mold 3, the disk 6 with the diaphragm 7 under the action of the springs 11 rises above the lower half of the mold 2 (see Fig. 2). A tire blank 13 is loaded into the bottom half-form 2, and the equatorial planes of the diaphragm 7 and the tire blank are the same. This coincidence is achieved by adjusting the tension of the springs AND, for example, using the nuts on the guides 5. Then the upper mold half is lowered until it comes into contact with the workpiece, the forming medium (steam or air) is fed into the diaphragm 7 and the tire is molded during further lowering upper form (see Fig. 3). After complete closure of the semi-molds, vulcanization takes place (see FIG. 4). After the vulcanization is completed, the disk 6 is connected to the vacuum line and the diaphragm 7 is drawn into its cavity, the mold is opened and the vulcanized tire is unloaded from it (see Fig. 5). Then the cycle repeats. Object of the Invention A device for molding and vulcanizing 10 pneumatic tire tires, comprising 5 upper and lower half-molds, an elastic diaphragm mounted on a movable disk having an annular cavity for accommodating the diaphragm, and means for connecting to a vacuum line and a heat transfer line, characterized in that , in order to ensure accurate installation of the diaphragm in accordance with the equatorial plane of the tire blank, the disk is mounted on adjustable guides and is spring-loaded relative to one of half molds

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