Patent ID: 7559756

Claim:
An injection molding shooting pot actuation apparatus configured to be installed in a coinjection hot runner with a coinjection nozzle, the coinjection nozzle having at least two melt channels ending at the same gate, said apparatus comprising: a shooting pot disposed in one of a mold cavity half and a mold core half; a shooting pot piston configured to discharge a melt from the shooting pot to the coinjection hot runner; transmission structure configured to (i) extend through one of the mold cavity half and the mold core half, and (ii) to transmit a force to said shooting pot piston; actuation structure disposed on the opposite side of the mold cavity half from the coinjection hot runner, and configured to provide the force to said transmission structure; a second shooting pot disposed in the one of said mold cavity half and said mold core half in which said shooting pot is not disposed; a second shooting pot piston that is configured to (i) discharge a second melt from the second shooting pot to the coinjection hot runner, (ii) to move in a melt-discharge direction that is opposite to a melt-discharge direction of said shooting pot piston, and (iii) to be actuated by a movement of a moving platen with respect to a stationary platen; and said second shooting pot being disposed on an opposite side of said coinjection hot runner from said shooting pot.