Mandrel bone for making rubber mold for casting and method for making rubber mold for casting

Abstract

The invention relates to a brod for fabricating a casting rubber mold and a fabricating method for fabricating the casting rubber mold employing the brod for fabricating the casting rubber mold, increased cost and poor operating environment are prevented, and the productivity is improved. The brod for fabricating the casting rubber mold is employed during the fabrication of the casting rubber mold, the brods for fabricating the casting rubber mold are arranged in an opposite manner, specified intervals are arranged between a master mold and the brods, liquid rubber injected into the spaces between the brods and the master mold is hardened, and a rubber layer for duplicating the surface shape of the master mold in an overturning manner is formed on an opposite surface of the master mold. The brod is provided with a central main body portion with specified width and length and two movable portions respectively arranged at two sides of the central main body portion, the central main body portion is provided with injection holes for the liquid rubber, the two movable portions can slide in the width direction along the opposition surface of the central main body portion, the width corresponding to the width of the master mold is adjusted, and the central main body portion and the movable portions are formed by synthetic woods.

Description

technical field [0001] The present invention relates to a core bone as a base of a rubber mold (rubber mold for making a casting mold), that is, a core bone for making a rubber mold for a casting mold, and the production of a core bone using the rubber mold for making a casting mold A method of manufacturing a rubber mold for casting molds for making molds such as tire vulcanization molds by casting. Background technique [0002] Conventionally, tire vulcanization molds have been used in the vulcanization molding process of pneumatic tires. Under normal circumstances, the tire vulcanization mold according to Figure 5 The process shown is carried out. First, a master pattern is manufactured in which a surface pattern corresponding to the surface shape of the tire such as a tread pattern is engraved by NC machining (Numerical control machining). Next, a rubber mold for inverting and transferring the surface pattern formed on the master mold is produced (preparation of a rub...

AI Technical Summary

Problems solved by technology

And the used mandrel is discarded after the rubber mold is made

In this way, since the manufactured mandrels are discarded after the rubber mold is manufactured, the cost increases

[0006] In addition, in the case of using gypsum to manufacture the mandrel, there is a problem that the gypsum is scattered or the manufactured mandrel is heavy, resulting in a poor working environment

In addition, it takes time to dry the gypsum, which also causes a decrease in productivity.

In addition, the discarded gypsum becomes industrial waste, which further increases the cost

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