SU1024299A1 - Method for controlling diaphragm of shaper-vulcanizer - Google Patents

Abstract

1. CONTROL MECHANISM of the DIFFRAGM VOLCANIZER FORMATOR, containing a power cylinder, the body of which is connected to; the lower diaphragm mounting disk, a piston with a hollow rod, on the upper end of which there is a lock for fastening the upper diaphragm disk, fixed in the lower part of the power cylinder tube, the working medium supply tube, sealing for the piston rod of the power cylinder and adjusting sleeve for fixing the upper disc to the preforming position, characterized in that, in order to prevent damage to the evacuated diaphragm when lowering the upper disk after loading the unvulcanized tire, the hollow sleep rod wives in its lower part with a smaller diameter step are rigidly fixed to upper and lower ends of the stage limiting rings and the piston is mounted on the smaller-diameter step to a stirred axially therealong. 2. The mechanism according to claim 1, wherein the adjusting sleeve is installed under the piston in the bottom of the cylinder. 3. The mechanism according to claim 1, characterized in that the upper restrictive ring is provided with an internal annular groove and radial grooves, and in the side walls of the hollow rod there are radial channels communicating with the annular pro (L point. 4. The mechanism according to claim 1, characterized in that, in order to increase the reliability of the mechanism, the seal for the rod cavity of the ram is rigidly fixed in the upper part of the ram of the ram.

Description

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The invention relates to the manufacture of pneumatic tires, namely to devices for controlling the orifice of a vulcanizer formator.

A known diaphragm control mechanism of a formatting vulcanizer, comprising a hydraulic cylinder, the body of which is connected to the lower disk for attaching the diaphragm, a piston with a hollow stem connected to the upper disk for attaching the diaphragm fixed to the bottom of the hydraulic cylinder body opposite to the hollow rod of the rod and mounted on the rod floating piston with restrictive edge 1.

However, the presence of a floating piston complicates the design and reduces the reliability of the mechanism.

The closest to the invention to the technical essence and the achieved result is the diaphragm control mechanism of the vulcanizer modifier, which contains a ram cylinder, the casing of which is connected to the lower disk for fastening the diaphragm, hollow stem with a lock on the upper end of the diaphragm disk mounted in the lower part of the body of the power cylinder tube for supplying the working medium, seal for the rod cavity of the power cylinder and the adjusting sleeve for fixing the upper disk and in the pre-shaping position 2.

However, the loading of the unvulcanized tire onto this mechanism takes place at the evacuated diaphragm and the maximum lifted upper disk, after which the upper disk is lowered onto the preforming position. During the period of lowering the disk, the diaphragm is bitten by the adjusting sleeve and goes out of order. In addition, the complexity of the design is due to the presence of a drive of an adjusting sleeve, made in the form of a "floating piston", which is also a movable seal of the rod end of the cylinder, which adversely affects the reliability of the mechanism.

The aim of the invention is to prevent damage to the evacuated diaphragm when lowering the upper disc after loading the unvulcanized tire and improving the reliability of the mechanism.

The goal is achieved by the fact that in the diaphragm control mechanism of the vulcanizer formatter, which contains a power cylinder, the casing of which is connected to the lower disk for fastening the diaphragm, a piston with a hollow rod, at the upper end of which there is a lock for fastening the upper disk of the diaphragm fixed at the bottom the body of the power cylinder tube for supplying the working fluid, the seal for the rod cavity of the power cylinder and the adjusting sleeve for fixing the upper disk in the preforming position, the hollow rod is provided in Its lower part is made with a smaller diameter stage with restrictive rings fixed on the upper and lower ends of the stage, and the piston is mounted on a smaller diameter stage with the possibility of axial movement along it.

Moreover, the adjusting sleeve is installed under the piston in the bottom of the cylinder.

0 In addition, the upper limiting ring is provided with an inner annular groove and radial grooves, and in the side walls of the hollow stem there are radial channels communicating with the annular groove.

 In addition, the seal for the rod cavity of the power cylinder is rigidly fixed in the upper part of the body of the power cylinder.

FIG. Figure 1 shows the mechanism with the maximum raised diaphragm disk and evacuated diaphragm; in fig. 2 - the same, in the position of the upper disc corresponding to the preforming cycle; in fig. 3 - the same, when closing the press. The mechanism contains a power cylinder 1,

5, the housing 2 of which is connected to the lower disk 3 for fastening the diaphragm 4, the piston 5 with the hollow rod 6, on the upper end of which there is a lock 7 for fastening the upper disk 8 of the diaphragm 4 fixed in the lower part of the power cylinder body 1, namely the cover 9, the tube 10 for supplying the working medium, the seal 11 for the rod cavity of the ram 1 and the adjusting sleeve 12 for fixing the upper disc 8 in the preforming position. The hollow brush 6 is provided in its lower part with a step 13 of a smaller diameter with restrictive rings 14 and 15 fixedly mounted on the upper and lower ends of the step 13, and a piston 5 is installed on the step 13 of a smaller diameter with the possibility of axial movement along it.

The adjusting sleeve 12 is installed under the piston 5 in the bottom, the lower cap 9, of the cylinder. The upper limiting ring 14 is provided with an inner annular groove 16 and radial grooves 17, and in the side walls of the hollow rod 6 there are radial channels 18 communicating with the annular groove 16; Compaction and

Q is rigidly fixed in the upper part of the body 2 of the power cylinder 1. Concentric to the hollow rod 6, a sleeve 19 is installed to fix the upper position of the upper disk in the loading position of the uncured lid (not indicated).

5 The mechanism works as follows.

Before loading the unvulcanized tire onto the diaphragm 4, the latter is evacuated and the upper disk 8 is lifted to the upper position, for which pressure is applied to the cavity under the piston 5. At the same time, the piston 5 rises in step 13 up to the stop in the upper limiting ring 14 and together with the hollow rod 6 rises up. The lifting of the hollow rod 6 upwards is carried out before the interaction of the sleeve 19 and the seal 11 (Fig. 1). After loading the unvulcanized tire, the upper disc 8 is lowered into the pre-shaping position on the diaphragm 4, for which pressure is supplied through the tube 10, the channels 18 in the walls of the hollow rod 6, the ring, the groove 16 and the radial grooves 17 in the upper limiting ring in the rod end of the cylinder 1. When this is due to the difference in diameters of the hollow rod 6 and stage 13, the rod is held in the upper position until the piston 5 descends through stage 13 to

stop in the lower limit ring 15 and will not begin to mix the hollow rod 6 down until the interaction of the piston 5 and the adjusting sleeve 12 (Fig. 2).

At the end of the preforming cycle, during which the pre-supply of pressure into the cavity of the diaphragm 4 takes place, the press closes. In this case, the upper half-form of the press, acting on the upper part of the hollow rod 6, will mix it down (Fig. 3).

A tire vulcanization cycle follows, after which the cycle of operation of the diaphragm control mechanism is repeated.

The proposed mechanism allows to increase the diaphragm mileage by eliminating their mechanical damage and premature failure, reduce and reduce the time for simple presses and operating costs, and reduce scrap.

Fig2

Claims (4)

1. CONTROL MECHANISM OF THE VERTICAL VULCANIZER FORMATOR, comprising a power cylinder, the housing of which is connected to the lower disk for fastening the diaphragm, a piston with a hollow rod, on the upper end of which there is a lock for fastening the upper disk of the diaphragm, a feeding tube fixed in the lower part of the power cylinder body a working medium, a seal for the rod cavity of the power cylinder and an adjustment sleeve for fixing the upper disk in the preform position, characterized in that, in order to prevent damage to the vacuum If the upper diaphragm is lowered when lowering the upper disk after loading the unvulcanized tire, the hollow rod is equipped in its lower part with a lower diameter step with restrictive rings rigidly fixed at the upper and lower ends of the stage, and the piston is mounted on the smaller diameter step with the possibility of axial movement along it. 2. The mechanism by π. 1, characterized in that the adjusting sleeve is installed under the piston in the cylinder bottom. 3. The mechanism by π. 1, characterized in that the upper restrictive ring is made with an internal annular groove and radial grooves, and in the side walls of the hollow rod there are made radial channels communicating with the annular groove. 4. The mechanism of π. 1, characterized in that, in order to increase the reliability of the mechanism, the seal for the rod cavity of the power cylinder is rigidly fixed in the upper part of the housing of the power cylinder. >