Patent ID: 7824173

Claim:
An apparatus for molding a hollow molded article, comprising: a combination of a molding device and a heating module, the molding device including a fixed die, a movable die, and a first and a second slide core fitted to the fixed die, wherein when the movable die is clamped to the fixed die at a first position, a first and a second cavity for simultaneously molding a first and a second semi-finished molded article having joint faces are formed by the first and the second slide core and the movable die, and a third cavity for simultaneously molding a third semi-finished molded article similarly having joint faces is formed by the fixed die and the movable die; wherein when the movable die is moved by a predetermined amount toward the first and the second slide core, the first to third cavities are registered with each other, and at a registered second position surfaces making up the first to third cavities are adapted to be spaced apart so as to secure a space of a predetermined size and to effect molding device clamping; and wherein the heating module has heating surfaces similar to the joint faces of the first to third semi-finished molded articles and is provided in such a manner as to be capable of being inserted into or retracted from the space formed by the spaced-apart surfaces making up the first to third cavities.