SU781080A1 - Vulcanizer for pneumatic-tyre casing - Google Patents

Description

(54) PNEUMATIC VALVE FOR COVER The invention relates to the manufacture of tires for pneumatic tires and is intended for pressure vulcanization of the assembled tire preform in a mold. A tire vulcanizer for a pneumatic tire containing a cavity-forming diaphragm for the coolant, discs for fastening the sides of the latter, coaxially with the discs installed in the axially spring-loaded valve and interacting with the latter vertically movable from the drive plate with channels connecting the cavity, formed by the diaphragm, with a source of coolant l. The complexity of the design of a known vulcanizer is due to the implementation of a system of channels for supplying heat transfer medium to the cavity formed in the diaphragm in the plate with the grips of the lower disk, moving in the vertical direction from the drive. The closest technical solution is a vulcanizer for. tires of a pneumatic tire containing a cavity-forming diaphragm for the heat transfer fluid, the beams of which are fixed in the lower and upper1; the tires are mounted coaxially with the latter, the spool mounted and vertically movable relative to it the spool, and in the spool housing of which there are channels and in the spool there are radios channels of the joint system formed by the cavity forming diaphragm with the source of heat carrier, and a valve cooperating with the slide, movably mounted in height between the disks 2. the spool of the vulcanizer is made with channels with the inlet sections facing the outlet openings of the channels made in the spool housing, and the outlet sections of the channels in it are formed into the cavity formed by the diaphragm and the upper and upper disks, and accordingly the output sections of the channels in the housing facing the pipeline source of heat carrier. To move the spool installed in the bottom plate, the actuH actuator is a power cylinder. However, the presence of an individual drive for its movement leads to a complication of the design of the vulcanizer and an increase in the energy cost due to the need for the pneumatic system to be able to drive.

The purpose of the invention is to simplify the design by using coolant to move the spool. The goal is achieved by the fact that the cavity formed by the lower end of the spool and the slide valve body is connected to the heat source and the slide valve body is made of height and height components from the lower and upper parts mounted below and from above relative to the lower disk, with the kanshs in the lower part of the spool housing being made along the generatrix with a length exceeding the thickness of the spool and in the upper part of the spool About the body are made through through channels, and on the spool with the side facing the valve there is a central protrusion.

The channel pattern of the system for connecting the cavity formed by the diaphragm and the source of heat carrier is simplified and in the direction of supply of the heat carrier from the source to it, the podzolnik cavity, the longitudinal channels in the lower relative to the lower disk of the spool body, the radial channels in the spool, the annular cavity formed by the spool body , the central protrusion on the slide and the valve interacting with it, and the channels in the upper part of the slide valve.

FIG. 1 shows a vulcanizer in the initial position, a longitudinal section; in fig. 2 - the same, in the working position / in FIG. 3 - the same, node 1 of FIG. one; in fig. 4 - the same, section AA

FIG. 2

The vulcanizer for a pneumatic tire tire contains a frame 1 on which the lower mold half 2 is installed and. coaxially with it — disks 3, 4 for fastening the sides of the forming diaphragm 5.

The cavity A formed by the diaphragm 5 is connected to the source of the heat carrier by channels made in the spool 1, which is stacked on the bed, which has a slide valve body, which is complete with. the height of the two lower b and top 7 parts, and the spool 8 with the Central ledge 9, the interacting end with installed in height between the disks 3, 4 valve 10.

The cavity B (Fig. 2), formed by the spool 8 and part 6 of the spool housing, and is connected to the source of the heat carrier channel C.

On the inner surface of the housing part b, longitudinal channels O are made, of a length exceeding the thickness of the spool 8, in which radial channels are made .E,

In the upper part 7 of the body of the spool are made holes F,

On the ledge 9 of the spool 8, there is a conical inlet section and an annular groove G, and on the upper part 7 of the spool housing horizontally and symmetrically mounted relative to the diametrical plane of the piston, the elastic rods 11 are mounted.

The vulcanizer works as follows; -

Before supplying the coolant to cavity A, the spool 8 of the spool 8 and the valve 10 are in their lowest position (Fig. 3). .

While the lower ends of the channels D above the upper end of the spool 8, and the holes F are blocked by the side surface of the valve 10.

After the lid of the steam chamber enclosing the mold is closed, the heat transfer fluid is fed through the channel C (Fig. 2) in the lower part of the spool body into the podzol-hollow cavity B, moving the spool 8 to the extreme upper position. At the same time, under the action of the protrusion 9 of the moving spool 8, the valve 10 rises to the position of its lower end above the orifices F, and the cavity A is connected to the podzolotic cavity in the channels D, E and F.

When the spool 8 is moved, the protrusion 9 by the side surface is successively along the height of the conical inlet section, the grooves C interact with the elastic rods 11. Vulcanization is carried out, after which the pressure of the coolant decreases. A mold is opened after the lid has been removed by a pair of camera. When removing the tire 12 from the bottom half of the mold 2, the elastic rods 11 are deformed and come out of engagement with the protrusion 9 of the spool 8, which, under the action of its weight, sinks into the initial extreme lower psotent as well as the valve 10.

The application of the proposed vulcanizer provides an economic effect of 379.9 tons. per 1000 tires.

Claims (2)

Invention Formula A vulcanizer for a pneumatic tire tire containing a cavity-forming coolant, forming a diaphragm, the sides of which are fixed in the lower and upper discs, coaxially with the latter installed spool housing and vertically movable relative to it spool, and in the spool housing made kangshy and in the spool radial channels. the joint system formed by the cavity forming diaphragm with the source of heat carrier, and a valve interacting with the slide, movably mounted in height between the discs, different in that. in order to simplify the design by using coolant to move the spool, the cavity formed by the lower end of the latter and the spool body is connected to the heat source, and the spool body is made of a composite height. from the lower and upper parts installed below and above relative to the lower disk, the channels in the lower part of the spool body are made along the generatrix, longer than the thickness of the spool, and in the upper part of the spool body are made through passage channels, and on the spool with the side facing the valve central protrusion. Sources of information taken into account in the examination 1. The author's certificate of the USSR 415927, cl. In 29 N 5/02, 1971. 2. USSR author's certificate number 446171, cl. In 29 N 5/02, 1971 (prototype). P Aa