Mold for manufacturing housing of hydraulic unit of anti-lock brake system

Abstract

Disclosed herein is a mold for manufacturing a housing of a hydraulic unit of an anti-lock brake system for vehicles. The housing has a plurality of bores formed therein such that components, such as a plurality of valves, accumulators, hydraulic pumps, and a driving motor, and a plurality of connection pipes are mounted to the housing through the bores. The mold comprises a lower mold mounted in a stationary frame for defining a housing forming space where the lower part and side parts of the housing are formed, an upper mold mounted in a movable frame disposed on the stationary frame such that the movable frame is vertically moved a predetermined distance, the upper mold covering the upper part of the housing forming space of the lower mold to form the upper part of the housing, lower cores attached to the lower mold such that the lower cores are protruded from the inner lower surface of the lower mold to form the lower-side bores of the housing, an upper core attached to the upper mold for forming the upper-side bores of the housing, and a plurality of side cores disposed at the lower mold such that the side cores move into and out of the housing forming space defined in the lower mold through the lower mold in four directions to form the bores provided at the four sides of the housing. With the mold according to the present invention, a housing having a complicated structure is manufactured through injection molding of a resin material. Consequently, the housing is easily manufactured with increased productivity as compared with the conventional method of manufacturing the housing through an aluminum cutting process. Furthermore, the manufacturing costs of the housing are reduced.