Patent ID: 8157559
Filing Date: 2012-04-17
Classification: B29C

Abstract:
1. An injection molding apparatus that is provided with a die having a hot nozzle which is in communication with a cavity, and a manifold which is formed by a hot runner connected to the hot nozzle, and that fills molten resin into the cavity of the die by passing from the hot runner through the hot nozzle, wherein: a communication passage that is in communication with the cavity is provided in the die; a concave portion defined at an end portion of the die; the hot nozzle comprises a nozzle body of a cylindrical shape that is inserted in the communication passage of the die, and a flange portion that is formed at an end side of the nozzle body and is exposed outside of the communication passage; a heater that heats the nozzle body is inserted between the communication passage and the nozzle body; and a ring heater that heats the flange portion is inserted in the concave portion and between the communication passage and the flange portion.