Molde dotado de dispositivo de travamento

摘要

The mold for injection molding of plastic materials, composite materials or a metal, comprises two semi-molds (2, 3) each of which is defined by a lateral surface, a front face and a back face. One of the two semi-molds is associated with a unit for opening and closing the mold, and is equipped with a bolting device (6). The two semi-molds are contacted at a joint plane, when the mold is in closed position. The bolting device comprises a bolt (7) to be housed simultaneously in a recess of each semi-mold, and an autonomous system (8) to bring closer and remove the bolt from the recess. The mold for injection molding of plastic materials, composite materials or a metal, comprises two semi-molds (2, 3) each of which is defined by a lateral surface, a front face and a back face. One of the two semi-molds is associated with a unit for opening and closing the mold, and is equipped with a bolting device (6). The two semi-molds are contacted at a joint plane, when the mold is in closed position. The bolting device comprises a bolt (7) to be housed simultaneously in a recess of each semi-mold, and an autonomous system (8) to bring closer and remove the bolt from the recess. The first semi mold is intended to be associated with a fixed plate (4). The second semi mold is intended to be associated with a movable plate (5). The plates and/or semi molds are equipped with a unit for injection of molding material and a unit for ejecting a molded part. The autonomous system comprises a self blocking cylinder. The cylinder comprises a chamber fixed to a support that is attached to the semi mold, a piston able to move in the chamber, and a rod attached with the piston. The bolt has a form complementary to recess. Each recess of one semi mold is positioned symmetrically with a recess of the other half mold with respect to the joint plane, and has an opening, a base, two orthogonal end faces at the joint plane, and two opposite lateral faces between the opening and base. The lateral face is more nearer to the joint plane forming an angle (A) of 30[deg] with the joint plane so that the distance between the opposite lateral faces rises from the bottom towards the opening of the recess.