Abstract: A hot runner injection molding apparatus (10) includes hot runner nozzles (20), a movable frame (30) that can be displaced between at least two positions relative to a plurality of mold cavities (24), each cavity having a mold gate (27). Valve pins (32) associated with the hot runner nozzles (20) are individually coupled to the movable frame (30) by a decouplable connector (36, 60). Disengagement devices (40) associated with the valve pins are activated to decouple any associated valve pin (32) from the movable frame (30). A control system (52) is used to activate the disengagement devices (40). In some instances a blocking element (42) is also activated to lock any valve pin at the mold gate or close to the mold gate. Control system (52) is further used to operate the blocking element (42). Disengagement devices (40) and the blocking elements (42) can be the same or different.

Abstract: An injection molding machine for producing molded parts has a machine table with a base frame on which three supporting elements with a baseplate disposed thereon are arranged. The base plate has a temperature-control element.

Abstract: In an injection molding nozzle with an elongated base body through which a channel for conducting a melt extends and which includes a heating element for the introduction of heat into the base body with temperature controlling heating coils disposed at the two ends of the temperature control element, means are provided for reducing the introduction of heat into the base body.

Abstract: A device removes molded parts from a mold cavity of a mold half of an injection molding machine. The device contains an ejection mechanism used to remove the molded parts from the mold cavity in an ejection direction. A receiving element is arranged in relation to the mold cavity in the ejection direction, the receiving element contains a receiving opening to which low pressure is applied. The receiving opening is connected to a supply opening of a chamber by a first line. The chamber contains a suction opening on a vertically arranged lateral wall, to which low pressure is applied.

Abstract: A device removes molded parts from a mold cavity of a mold half of an injection molding machine. The device contains an ejection mechanism used to remove the molded parts from the mold cavity in an ejection direction. A receiving element is arranged in relation to the mold cavity in the ejection direction, the receiving element contains a receiving opening to which low pressure is applied. The receiving opening is connected to a supply opening of a chamber by a first line. The chamber contains a suction opening on a vertically arranged lateral wall, to which low pressure is applied.

Abstract: An injection molding machine for producing injection molded parts has an injecting station in which melt can be introduced into a cavity of a tool part. The cavity corresponds to the injection molded part. The injection molding machine has further stations in which the injection molded parts can be treated. The injection molded parts can be transported from one station to another station by way a transporting device. The transporting device has at least one transporting path that connects two stations. The injection molded parts are movable from one station to another station on the transporting path.

Abstract: An injection molding machine for producing molded parts has a machine table with a base frame on which three supporting elements with a baseplate disposed thereon are arranged. The base plate has a temperature-control element.

Abstract: A hot runner injection molding apparatus includes a machine injection unit with a machine nozzle, a first machine platen fixed to the machine base, a second machine platen movable with respect to the first machine platen, a hot runner manifold having an inlet melt channel and a plurality of output melt channels, a plurality of hot runner nozzles associated with the manifold output melt channels, and a movable valve pin plate connected to a plurality of valve pins.

Abstract: In an injection molding tool with at least one hot channel nozzle (1), which is provided with a discharge nozzle opening (1a) and a closure needle (2) for closing the nozzle opening, an element (3) is provided by which at least the closing position of the closure needle can be monitored.

Abstract: In an injection molding nozzle with a nozzle head including at least one discharge opening and a closure element for closing the discharge opening movably supported in the nozzle head for closing the discharge in order to control the supply of melt material to a communication opening in an injection mold, the closure element is operable by a drive mechanism provided with a short stroke actuating means for displacing the closure element in a direction opposite to the closing direction of the closure element by a predetermined short distance so as to automatically retract the closure element by the predetermined short distance when it is no longer biased by the actuating means in the closing direction.

Abstract: In a hot channel injection molding nozzle comprising a nozzle body including a mass flow channel for a melt to be injected into a mold, wherein the nozzle body has a nozzle outlet opening at one end and an inlet opening disposed at one side of the other end of the nozzle body and a valve needle extending through the nozzle body to the outlet opening for blocking the melt flow, a valve needle guide sleeve is disposed in the nozzle body so as to delimit the mass flow channel in the area of the inlet opening with the valve needle extending through the guide sleeve.

Abstract: In an apparatus for producing a tubular body with a membrane forming a separating wall extending across the interior of the tubular body, an injection mold is provided including a cylindrical hollow space corresponding to the outer wall of the tubular body and a pin is disposed in the cylindrical chamber in spaced relationship with the wall thereof so as to form a tubular passage, wherein the pin includes upper and lower parts which are movable relative to each other so as to form an adjustable gap between which is in communication circumferentially with the tubular passage.

Abstract: In an injection molding nozzle for an injection molding tool having an opening for receiving the injection molding nozzle, at least a first mounting element of low heat conductivity is firmly connected to the injection molding nozzle so as to permit accurate machining of the mounting element together with the nozzle such that the nozzle can be installed in the opening of the molding tool by an accurate press fit without directly contacting the base body of the molding tool.

Abstract: In an injection molding nozzle comprising a nozzle body including a passage with a nozzle opening, a thermoelement disposed in the nozzle body and a clamping sleeve disposed on the nozzle body and having an internal cavity with an access opening through which the thermoelement extends into the cavity, the cavity has a radially outer wall which is inclined so that by movement of the clamping sleeve relative to the thermoelement the thermoelement is firmly engaged with the nozzle body so as to establish a good heat transfer contact between the nozzle body and the thermoelement.