SU1168315A1 - Method of manufacturing unit-cast sectors for press moulds used in making pneumatic tyres - Google Patents

Abstract

METHOD OF MANUFACTURING THE WHOLE SECTOR FOR PRESS-FORMS, W; USE WHEN RECEIVING THE PAIRS PNEUMAPE I TYPE OUR APPLICATIONS, including installing a flask on a sub-model plate with detachable elements of a pattern for removing accessories under the eyes of an application for an application; the removal is vertically transferred together with weaning {in B1 elements.: models, characterized in that, in order to fully develop the technological capabilities of the molding, the detached elements of the model are removed alternately and one at the same time with the removal of the crawl rml, while lifting the half-pins and changing the trajectory of its movement in a direction parallel to the longitudinal axis of the detachable element of the model, at the same time restricting its movement relative to the half-pans {& 1 when removing it. /

Description

The invention relates to the field of foundry and can be used in the manufacture of molds for the vulcanization of tires of pneumatic tires and other castings with undercuts of complex configuration.

The aim of the invention is to expand the technological capabilities of the molding.

The method is intended to produce castings with undercuts of a complex configuration.

Fig. 1 shows a half-mold on a sub-model plate (item I); Fig. 2 shows a half-form, raised with detachable elements (position II); Fig. 3 shows a half-mold with one detachable element removed (item III); 4 shows a half-mold with detachable elements removed (position IV).

The rig for carrying out the method comprises a sub-model plate 1 on which model 2 is installed with detachable elements 3 and 4, a flask 5, a device 6 providing for moving the flask (half-form) along a predetermined path, and also a system of grades 7 and 8 limiting the movement of detachable elements 3 and A relative to half-form 9.

The manufacture of a semi-commercial is carried out as follows.

On the sub-model plate 1, the mold 5 is installed, the cavity of the flask is filled with molding material, and the mold 9 is compacted (position I). Then the half-form 9 is raised to a predetermined height, exceeding the height of the central part of the model 2 by 5-10 mm (position II). The detachable elements 3 and 4 remain in the mold and lift together with it (Fig. 2). In position II

under the action of the device 6, the trajectory of the hemoform 1 9 is changed relative to the base plate 1 in a direction parallel to the longitudinal axis (extraction) of the removable element 3 removed first, and at the same time, the hard 7 restrict its movement relative to the half shape. When the mold half 9 moves to position III, the detachable element 3 remains in the same position, held by the hard 7, and then returns along the guides (not shown) to its original position.

After removing element 3, the path of displacement of mold half 9 is relatively submodel. the plates 1 are changed in the direction parallel to the longitudinal axis of the detachable element 4, and the tight 8 is limited by its movement relative to the half-form (Fig. 4). When the half-form retreats to the position IV. Under the action of the pull 8, the detachable element 4 remains in the same position, and then returns to its original position with the help of a lever mechanism (not shown).

Half-form 9 is ready for assembly, and the submodel plate is for the following molding cycle.

The application of the method for obtaining solid-molded sectors of the molds for tire manufacturing in the industry will greatly simplify the technology and replace the laborious process of casting the investment on the melted models by sand casting. The proposed method allows combining several parts into one and expanding the possibilities for obtaining molds with increased overall dimensions of their constituent elements.

Positions P

fog 2

Positions

Fig d

Positions l

FIG 4

Claims (1)

METHOD FOR PRODUCING COLORFUL SECTORS FOR PRESS FORMS, USE OF DENTAL WHEN RECEIVING TIRES OF PNEUMATIC TIRES, including installing the flask on a model plate with detachable elements of the model for decorating the undercuts, filling the mold cavity with molding using molding material, weaning & w with elements of the model, characterized in that, in order to expand the technological capabilities of the molding, the weaning elements of the model are removed alternately and simultaneously about with the removal of half-molds, while lifting the half-molds, change the trajectory of its movement in a direction parallel to the longitudinal axis of the detachable element of the model, while limiting its movement relative to the half-molds when it is removed. in