SU1481078A1 - Device for manufacturing half-spherical rubber envelopes - Google Patents

Abstract

The invention relates to the manufacture of rubber products and can be used for the manufacture of hemispherical rubber membranes. The purpose of the invention is to reduce the metal consumption of the device. For this, the plunger 7 is made equal to the height of the punch 2 and the protrusion 11 is made at its working end in the form of the gate channel 8. When the shell is molded, the plunger 7 is axially moved in the loading chamber 6 and squeezes the raw rubber 12 out of it into the forming cavity 3 When the plunger is fully pressed in, its protrusion 11 enters the gate channel 8 and forms a part of the shell surface with the lower end surface. The upper end of the plunger is flush with the upper surface of the punch 2. 2 Il.

Description

Phie.Ј

The invention relates to the manufacture of rubber products and can be used to make hemispherical rubber membranes.

The purpose of the invention is to reduce the metal consumption of the device.

FIG. 1 shows the proposed device in the working position; in fig. 2 - tf, before the start of molding.

A device for making rubber chluspherical casings contains the matrix 1 and the punch 2, forming a hemispherical forming cavity 3, and an intermediate 1-mm plate 4 disposed between them, defining the thickness of the envelope being manufactured. For setting the mold, there is a lock 5, napimer, in the form of a detachable yoke. On the central axis of the device in the punch 2, a loading chamber 6 is laid, in which

A plunger 7 is installed for axial movement. The loading chamber 6 is connected to the forming cavity 3 by eating the gate channel 8. To prevent rotation of the material outflow from the filling chamber through the gap 9 between the wall-loading chamber 6 and the plunger 7

: The elastic metal seal is sealed; the ring 10. The plunger 7 is made equal to the height of the punch 2, therefore during forming the upper and lower ends of the plunger 7 are flush with the surface of the punch 2. On the working plug of the plunger 7, a protrusion 11 is shaped in shape Gating channel 8.

The device works as follows.

An annular plate 4 is placed on the matrix 1, then a punch 2 and the locks 5 are closed. A disk blank 12 of raw rubber is placed in the loading chamber 6. A sealing ring 10 is placed on top of the rubber blank.

and a plunger 7 is inserted. The device is installed in a vulcanization press on which the casing 13 is molded and cured. When plunger 7 is completely pressed in, its lower part 11 enters the gate channel 8, completely covers it, and the lower end surface of the plunger forms part of the shell surface 13. The upper end of the plunger is flush with the top surface of the punch.

After vulcanization, the device is disassembled and the finished casing 13 is removed. Disassembly is not difficult, since the plunger 7 installed

free landing, easy to take out. The device has a small size and easy to use. The use of the proposed device with reduced dimensions and weight in the factories of RTI makes it possible to improve the working conditions of workers and to ensure the manufacture of high-quality large-sized shells.

Claims (1)

Invention Formula A device for making rubber hemispherical shells, comprising a matrix and a punch, forming a hemispherical forming cavity, located in the punch along the central axis of the device, a loading chamber connected to the forming cavity by means of a gating channel, and a plunger mounted in the loading chamber with axial displacement; that, in order to reduce the metal capacity of the device, the plunger is made equal to the height of the punch, and on the working end of the plunger a projection is made in the form nick channel. Fiz1