SU1035906A1 - Mould for vulcanizing rubber cord casing - Google Patents

Abstract

PRESS FORM FOR VOLCANIZING RUBBER AND CORD ENVELOPES, containing a movable upper and fixed lower parts, a detachable middle part consisting of several 0 in height. ring-shaped elements formed by sectors mounted for movement on guide rods that are mounted in pivot racks hinged on the fixed part by means of axles, and the turn actuator, characterized in that, in order to improve the quality of the shells, the turn actuator racks Flax in the form of a movable traverse mounted coaxially with the lower part, connected to the posts by means of hinged levers, and the holes of the struts under the axles are made in the form of vertical grooves.

Description

The invention relates to the manufacture of: rubber products and is intended for the vulcanization of rubber sheaths.

A mold for vulcanization of rubber-cord shells is known, comprising a movable upper, which forms the cavity-forming cavity, and a fixed lower part and a middle element mounted vertically on the guide rods connected to one; from parts of the mold, spring-loaded in the longitudinal direction.

Known mold does not provide high-quality manufacturing of rubber-cord shells with an undercut on the sides, the inner dia-, the meter of which is less than the outer diameter; ra boards.

 Also known is a mold, which contains a movable upper and fixed lower parts.

the middle part consisting in height of several annular elements formed by sectors mounted for movement on guide rods mounted in pivot racks, was fastened to the stationary part by means of axles, and the drive rotated the racks.

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In a well-known mold, the drive for rotating the struts is made in the form of copiers mounted on a movable upper part, the mold, and fingers interacting with their notches fixed on the stands.

During the operation of the mold, the grooves of the copiers wear out, as a result, the synchronization of the turns of the struts is disturbed, which leads to the pinched claddings with sectors of the middle part of the mold. In addition, the lower side of the shell is molded only by rotating the pillars, which makes the structure of the upper and lower sides of the shell different. This reduces the quality of the shells. The aim of the invention is to improve the quality of the rubber-casing shells. This goal is achieved by the fact that in a mold for vulcanization of rubber-cord shells, containing a movable upper and fixed lower parts, there is a detachable middle part consisting in height of several annular elements formed by sectors installed with the possibility of movement on guide rods, which mounted in swivel racks, hinged on the fixed part by means of axles, and the drive turning the struts, the drive turning the struts made in the form of a movable The traverses connected to the uprights by means of the articulated levers, and the openings of the uprights under the axles are made in the form of vertical grooves .; The drawing shows the described mold (on the left at the time of vulcanization, on the right at the molding stage, and in thin lines at the recharging stage). The mold for vulcanization of the rubber-casing shells contains the cavity-forming movable upper part 1 , fixed lower part 2 and detachable middle part, consisting in height of lower 3, middle and upper 5 ring elements, formed by sectors mounted for movement on guide rods 6. Middle element 4 is sub-finished, relative About the top 5 and bottom 3 elements using springs 7 and 8, mounted on the guide rods 6. The rods 6 are made with steps 9, which interact with the middle ring element k. The rods 6 are mounted in turning posts 10, which are hinged on the lower part 2 by means of an axle 11. In the uprights 10 under the axis 11 holes are made in the form of vertical grooves. 12. The mold is driven by a turn of the struts, which is made in the form of a movable cross bar 13 installed coaxially with the lower part 2 f and connected to the struts 10 by means of hinged levers 1. When in operation, the mold is mounted on the format-vulcanizer. Part 2. The mold is mounted on the table 15 of the format-vulcanizer, the upper part 1 is attached to the upper steam chamber 16 of the format-vulcanizer, and the yoke 13 is mounted on the outer stem 17 of the central diaphragm control mechanism 18. Operation of the mold This is as follows. In the initial position, the steam chamber 1 6 with the upper part 1 is retracted, the yoke 13 is extended upwards, the struts 10 with the sectors of the middle part of the mold installed on them are rotated in a vertical plane from the center of the mold (shown by thin lines in the figure), and the diaphragm 18 extended. On the diaphragm-18, the workpiece ebel glasses 13 is placed. After this, the yoke 13 is lowered and through the levers 1 rotates the struts 10 with the sectors of the middle part mounted on them to the center of the mold (see the figure, the right part). and 8, the middle element abuts the steps 9 of the rods 6, and the elements 3 and 5 are in extreme positions. Then the steam chamber 16 is lowered with the upper part 1, under the influence of which the elements 3 and 5 approach each other, compressing the springs 7 and 8, and the forming steam is fed into the diaphragm 18. Moreover, in the process of lowering the upper part 1, the element L of the middle part of the mold will be in the middle of the gap between elements 3 and 5. When the parts of the mold are fully closed, the shell is completed, and due to the groove 12, the sides are evenly pressed. Heating diaphragm 18 is supplied to diaphragm 18 and steam chamber 1b and vulcanization is performed. At the end of the vulcanization process, the coolant and the mold about JOD TC are reset to their original position, and the shell 19 is ready to be removed. Then the cycle repeats. Compared with the known, the described mold provides high-quality manufacturing of rubber cord

shells that have internal diat. 10359066 meter undercut less diameter boron

Claims (1)

PRESS FORM FOR VOLCANIZATION OF RUBBER-CORD SHELLS, comprising a movable upper and fixed lower part, a detachable part consisting of a middle height of several ring elements formed by sectors mounted to move on guide rods that are mounted in swivel racks, pivotally mounted on a fixed part by means of axes, and the rotation drive of the racks, characterized in that, in order to improve the quality of the shells, the rotation rotation of the racks is made in the form installed coaxially with the bottom astyu moving crosspiece associated with the uprights by means of articulated levers and holes at the axis racks are in the form of vertical slots.