SU251814A1 - VOLKANIZATOR FOR THE RESTORABLE COVERS OF PNEUMATIC TIRES - Google Patents

Description

Vulcanizers are known for retractable tires of pneumatic tires, including upper and lower half-molds with bead rings and a diaphragm with a control mechanism. The control mechanism of the diaphragm is made in the form of disks with lead cylinders, in which the diaphragm is fixed. When removed from the tire, the diaphragm is pulled out over the entire length of the diaphragm, which significantly increases the dimensions of the cylinders, increases the response time of the diaphragm and the energy consumption of its drive.

The vulcanizer manufactured according to the invention is free from the indicated drawbacks and is characterized in that the diaphragm control mechanism consists of a conical guide fixed on the upper bead ring and two concentrically arranged cylindrical guides with actuators external of which are rigidly connected to the left bead ring and on the inner rail in the clamping ring, the beams of the double folded diaphragm, located in the annular gap between the cylindrical rails, are fastened. Elastic plates made of a material with a lower coefficient of friction than that of the diaphragm material are fixed between the diaphragm and the outer cylindrical guide, elastic petals are installed inside the diaphragm, and the inner walls of the diaphragm are provided with longitudinal ribs. Such an improvement makes it possible to decrease the course of the diaphragm and friction, and also prevents the formation of folds on it.

FIG. 1 shows the described vulcanizer in section; in fig. 2 is a cross section of the diaphragm.

The vulcanizer consists of a bottom half-form 1 with a side ring 2 and an upper half-form 3 with a side ring 4 on which a conic guide 5 is fixed. On the bottom side ring an external cylindrical guide 6 is fixed. From below

an annular bottom 7 is fastened with a cross-member 8, which is connected by bridges 9 with a cylinder W. The piston 11 of the cylinder is fixed on the rod 12 mounted in the beam 13 attached by brackets 14 to the bottom half-form /. The piston J5 of the cylinder 16 is secured to the cylinder 10, which is connected through a ring 1 / with crossbars 18. The latter are attached to an internal cylindrical guide 19, on which are clamped in the clamping ring 20

both sides of the diaphragm 21. For supplying the coolant to the bottom of the diaphragm and releasing it after vulcanization, elastic tubes 22 with distributors 23 are installed. On the ring 17 there is a rod 21 passing through

Mami 1 to 3 places tire 26. In the clamping ring 20 (Fig. 1 and 2) between the diaphragm 21 and the outer direction is 1, it has 6 elastic plates 27 made of mat, with a lower coefficient of friction than the material of the diaphragm. On the inner surface of the diaphragm there are fins 28 and elastic petals 29 are installed inside it.

Vulcanizer works as follows.

After loading the scrim 26, the vulcanizer closes, and the conical guide 5 covers the upper part of the cylindrical guide 19. After the half-molds 1 and 3 are closed, pressure is applied to the cavity of the cylinder 16 and the coolant to the cavity of the diaphragm. The cylinder 16 moves upward and through the ring 77 and the cross member 18 moves upward the cylindrical guide 19, with which the clamping ring and the diaphragm fixed in it moves. The plates 27, moving together with the diaphragm, separate part of its surface from the wall of the cylindrical guide 6, reducing the frictional force between them. The diaphragm, filled with coolant, occupies the cavity of the tire 26. During the vulcanization process, the force acting on the clamping ring 20 is balanced by the force of the cylinder 16.

After vulcanization, pressure is applied to the lower cavity of the cylinder 16 and at the same time the outlet of the heat transfer medium from the diaphragm opens. The cylinder 16, moving down, through the ring 17 and the TIPS 18, lowers the cylindrical guide 19. The associated clamping ring does not have a downward diaphragm that comes out of the cavity of the tire 26 and takes place between the guides 6 and 19. By applying pressure in the upper cavity of the cylinder 10 moves up the cylinder itself and, together with it, the cylindrical guide 6 with the bead ring 2, which pushes the tire 26 mz lower half of the mold. Further, the process of charging, vulcanization and unloading is repeated.

Subject invention

Claims (2)

1. A vulcanizer for retractable tires of pneumatic tires, including the lower and upper half-form with bead rings, and a diaphragm with a control mechanism, characterized in that, in order to reduce the diaphragm stroke, the diaphragm control mechanism consists of a conical guide fixed on the upper side a ring and two color-centered cylindrical guides with actuators, the outer of which are rigidly connected with the lower bead ring, and the inner guide in the clamping ring is fixed with a double folded diaphragm flange located in the annular gap between the cylindrical guides. 2. A vulcanizer according to claim 1, characterized in that, in order to reduce friction and prevent wrinkles on the diaphragm, between the diaphragm and the cylindrical guide: the elastic plates are made of a material with a smaller coefficient than the diaphragm material training, elastic petals are installed inside the diaphragm, and the inner walls of the diaphragm are provided with longitudinal ribs. 23 19 6/5/7 / // / 3 ua.J 26 27 Par.2