An edge-gated injection molding apparatus is disclosed having an injection manifold assembly for distributing a melt stream of moldable material to a plurality of mold cavities aligned on opposing sides of the injection manifold assembly. The injection manifold assembly includes a plurality of melt outlets with each melt outlet being in fluid communication with a respective mold cavity, and a plurality of biasing components disposed along a centerline of the injection manifold assembly. A nozzle seal is disposed between each injection manifold assembly melt outlet and its corresponding mold cavity, with an upstream end of the nozzle seal being slidably disposed against its respective melt outlet. Each biasing component is disposed between a pair of melt outlets and corresponding nozzle seals for biasing the melt outlets and nozzle seals outward from the centerline of the injection manifold assembly toward their respective mold cavities and applying a preload thereto.

An edge-gated injection molding apparatus is disclosed having an injection manifold assembly for distributing a melt stream of moldable material to a plurality of mold cavities aligned on opposing sides of the injection manifold assembly. The injection manifold assembly includes a plurality of melt outlets with each melt outlet being in fluid communication with a respective mold cavity, and a plurality of biasing components disposed along a centerline of the injection manifold assembly. A nozzle seal is disposed between each injection manifold assembly melt outlet and its corresponding mold cavity, with an upstream end of the nozzle seal being slidably disposed against its respective melt outlet. Each biasing component is disposed between a pair of melt outlets and corresponding nozzle seals for biasing the melt outlets and nozzle seals outward from the centerline of the injection manifold assembly toward their respective mold cavities and applying a preload thereto.

An insert for an injection-moulding nozzle, having an insert body which has a rear end and a front end and in which at least one flow duct is formed between the rear end and the front end. In this case, the insert body has a first part for arranging the insert on or in the injection-moulding nozzle and a second part for arranging on or in a mould insert. The first part is manufactured from a first material and extends from the rear end of the insert body to a contact surface. The second part is manufactured from a material different from the first material and extends from the contact surface to the front end of the insert body. Furthermore, the first part and the second part are connected firmly together at and/or along the contact surface. Also disclosed, an injection-moulding nozzle can include the insert.

A nozzle terminal of an injector comprises a tip and a ring nut having respective distal ends one of which is configured so as to be coupled with a gate of a moulding cavity, it cooperates with the shutter terminal of the valve pin of the injector, and it has an overall thickness in cross-section which is equal to or less than that of the cross-section of the shutter terminal of the valve pin.

A hot-runner molding apparatus includes a hot-runner nozzle, a hot-runner molding die and a runner unit. The positions of outflow hole portions are arranged rotationally-symmetrical with respect to the positions of the runner groove portions in such a manner that the molten resin is equally distributed from a gate hole portion to the runner groove portions.

An injection molding nozzle tip includes a body extending along a central axis and having a front end and a rear end. A passage extends along the axis, through the body and forms a front opening at the front end, and a rear opening at the rear end. At least one fin extends radially inwardly from an inner surface of the passage.

A co-injection hot runner nozzle comprises an inner melt flow channel and an annular outer melt flow channel that surrounds the inner melt flow channel. The inner and outer melt flow channels have a first common source. The nozzle further comprises an annular intermediate melt flow channel disposed between the inner and outer melt flow channels. The annular intermediate melt flow channel is at least partly defined by a plurality of spiral grooves, each spiral groove having a respective inlet and defining a helical flow path. Lands between adjacent spiral grooves increase in clearance in a downstream direction. An annular axial flow path is defined over the lands. A plurality of feeder channels having a second common source is configured to supply melt to the plurality of inlets of the spiral grooves. The relationship of feeder channels to spiral grooves may be one-to-one. The inlets may be longitudinal channels.

The present application describes injection molding machines and, more particularly, a removable nozzle tip and nozzle assembly for use with an injection molding machine and an engagement tool and methods for replacing a nozzle tip. In an aspect, an injection molding machine may include a nozzle. The nozzle may include a nozzle housing and a nozzle tip threadably attached to the nozzle housing. At least a portion of an exterior wall of the nozzle housing and at least a portion of an exterior wall of the nozzle tip may align to provide a cylindrical surface. The injection molding machine may further include a tubular heater enclosing at least a portion of the continuous cylindrical surface. The nozzle tip does not include a torque feature in any location that is downstream of the tubular heater and upstream of a mold gate of the nozzle.

A hot runner nozzle for the lateral gating of plastic components has a nozzle body and a pressure lid. Tip elements are arranged between the nozzle body and the pressure lid, which are each inserted into a recess of the nozzle body and are each penetrated by a movable closure needle having a tip, which in at least one operating position protrudes in each case over an outer circumferential edge of the nozzle body. The closure needles each include, on their ends facing away from the tip, a coupling means, which is coupled to a drive means for moving the closure needles. The tip elements are supported on their side facing away from the respective tip of the closure needles on a buttress element inserted between the nozzle body and the pressure lid.

An injection assembly including a cover part which covers an upper surface of a controller and in which a plurality of injection holes are formed to correspond to positions of a plurality of heating elements and a nozzle unit including a plurality of nozzles to simultaneously inject an injection material into the plurality of injection holes, wherein a pressure sensor is disposed in each of the plurality of nozzles to measure an internal pressure of the nozzle and to control an injection speed based on the measured internal pressure.