An injection molding apparatus (5) comprising an injection molding machine (IMM), a heated manifold (60) that receives injection fluid (9) and distributes the injection fluid through a fluid distribution channel (120), a mold (70) having a cavity (80) and one or more valves (50) having a valve pin (100) the one or more valves (50) being comprised of: an electrically driven actuator (200), a controller including an algorithm that controllably limits rotation of a shaft (12) or output rotation device (16, 430, 500) during the course of an entire injection cycle to selectable angular positions that create a moment arm that extends between selected a selected minimum moment arm and a selected maximum moment arm, the selectable angular positions being between 70 degrees above and 70 degrees below an angular position that corresponds to the selected maximum moment arm.

A molten plastic delivery system is disclosed having a nozzle defining a nozzle channel with a downstream nozzle channel opening. A valve pin is reciprocable within the nozzle channel between a closed position and an open position. The system includes a bell crank having first and second arms that are connected at and rotatable about a pivot. The first arm is coupled to the valve pin and the second arm is coupled to a push-pull cable such that angularly pushing the second arm about the pivot via the push-pull cable moves the valve pin to the open position and angularly pulling the second arm about the pivot via the push-pull cable moves the valve pin to the closed position.

An injection molding apparatus (5) comprising an injection molding machine (IMM), a heated manifold (60) that receives injection fluid (9) and distributes the injection fluid through a fluid distribution channel (120), a mold (70) having a cavity (80) and one or more valves (50) having a valve pin (100) the one or more valves (50) being comprised of: an electrically driven actuator (200), a controller including an algorithm that controllably limits rotation of a shaft (12) or output rotation device (16, 430, 500) during the course of an entire injection cycle to selectable angular positions that create a moment arm that extends between selected a selected minimum moment arm and a selected maximum moment arm, the selectable angular positions being between 70 degrees above and 70 degrees below an angular position that corresponds to the selected maximum moment arm.

A molten plastic delivery system is disclosed having a nozzle defining a nozzle channel with a downstream nozzle channel opening. A valve pin is reciprocable within the nozzle channel between a closed position and an open position. The system includes a bell crank having first and second arms that are connected at and rotatable about a pivot. The first arm is coupled to the valve pin and the second arm is coupled to a push-pull cable such that angularly pushing the second arm about the pivot via the push-pull cable moves the valve pin to the open position and angularly pulling the second arm about the pivot via the push-pull cable moves the valve pin to the closed position.

The present disclosure is directed to an injection nozzle with a nozzle head including at least one discharge opening for injecting molding material into a mold cavity of a thereto interconnected injection mold and forming therein a molded body. At least one positively controlled closure element movably supported in the nozzle head for closing a communication opening in the connected injection mold. An actuator cylinder comprises a first piston which is interconnected to the closure element. The first piston is arranged movable between a first position, in which the closure element is fully closed, and a second position in which the closure element is fully open. A second piston is interconnected to the closure element, and is arranged movable between a third position in which the second piston is not interconnected to the closure element and a fourth position in which the closure element is limited in an intermediate position.

An injection nozzle for an injection molding device comprising a nozzle head, an actuator, a drive train connected to the actuator, and at least one closure element. The drive train configured for moving the at least one closure element arranged in the nozzle head in a first direction. The drive train comprising a cam mechanism that comprises a cam head. The cam head comprising a cam head block. Per closure element, the cam head block comprising a bracket. The bracket comprising at least one inlay. Per closure element, the at least one inlay comprising a first drive surface configured for engaging and driving a second drive surface arranged at the closure element at least during closing of the closure element. Per closure element, the cam head block comprising a third drive surface configured f engaging and driving a fourth drive surface arranged at the closure element at least during opening of the closure element.

The present disclosure is directed to an injection nozzle for an injection molding device comprising a drive train for at least one closure element arranged movable in a nozzle head in a first direction. The drive train comprises a cam mechanism with a cam head comprising a wedge and at least one side plate. The wedge and the side plate are together arranged moveable in a second direction. Per closure element the wedge comprises at least one first drive surface which interacts with a second drive surface arranged at the closure element at least during closing of the closure element. The at least one side plate comprises a third drive surface which interacts with a fourth drive surface arranged at the closure element at least during opening of the closure element.

The invention is directed to an injection nozzle (1) for an injection molding device comprising. At least one closure element (4) is arranged movable in a nozzle head (2) in a first direction (a). A cam mechanism (5) comprises a cam head (6) with a cam head block (7). Per closure element (4) the cam head block (7) comprises a bracket (8). The bracket (8) comprises at least one inlay (9). Per closure element (4) the at least one inlay (9) comprises a first drive surface (10) which interacts with a second drive surface (11) arranged at the closure element (4) at least during closing of the closure element (4). The cam head block (7) per closure element (4) comprises a third drive surface (12) which interacts with a fourth drive surface (13) arranged at the closure element (4) at least during opening of the closure element (4).

The present disclosure is directed to an injection nozzle for an injection molding device comprising a drive train for at least one closure element arranged movable in a nozzle head in a first direction. The drive train comprises a cam mechanism with a cam head comprising a wedge and at least one side plate. The wedge and the side plate are together arranged moveable in a second direction. Per closure element the wedge comprises at least one first drive surface which interacts with a second drive surface arranged at the closure element at least during closing of the closure element. The at least one side plate comprises a third drive surface which interacts with a fourth drive surface arranged at the closure element at least during opening of the closure element.

The present disclosure is directed to an injection nozzle with a nozzle head including at least one discharge opening for injecting molding material into a mold cavity of a thereto interconnected injection mold and forming therein a molded body. At least one positively controlled closure element movably supported in the nozzle head for closing a communication opening in the connected injection mold. An actuator cylinder comprises a first piston which is interconnected to the closure element. The first piston is arranged movable between a first position, in which the closure element is fully closed, and a second position in which the closure element is fully open. A second piston is interconnected to the closure element, and is arranged movable between a third position in which the second piston is not interconnected to the closure element and a fourth position in which the closure element is limited in an intermediate position.