Injection unit for injection molding of plastic material including: an injection nozzle; a closure pin; and a guide and cooling assembly, interposed between the back driving plate and the hot distribution plate, in turn comprising: a guide and seal element for guiding the axial motion of the closure pin; a cooling ring; and pressure means configured to press the cooling ring directly and against the back driving plate; wherein the guide and seal element is slidably coupled, at an upper end, with a central hole of the cooling ring, and is fixed integrally, at the other end, to the hot distribution plate; and the cooling ring is able to slide laterally with respect to the back driving plate to recover the differences in thermal expansion between the hot distribution plate and the back driving plate and to transmit heat from the guide and seal element towards the back driving plate.

Disclosed is a guide bushing for the guiding and sealing of a closing needle of a needle valve nozzle of an injection moulding apparatus, the guide bushing having a main part and a fastening element, wherein the main part has a through-opening for the closing needle, wherein the through-opening comprises at least one guiding portion, which encloses the closing needle with slight movement play, wherein the through-opening comprises at least two expansion portions, whose diameter in each case is larger than that of the at least one guiding portion. The guide bushing moreover comprises a fastening element, which is securable to the main part, wherein a seal element is arranged between the fastening element and the main part, bearing against the entire circumference of a closing needle inserted into the through-opening.

An apparatus includes a stem connector configured to connect a movable piston with a valve stem, in which the movable piston is slidably receivable in a cylinder, and in which the cylinder is mountable to a distribution manifold of a molding system. The stem connector maintains connection between the movable piston and the valve stem while the valve stem is moved to selectively open or close a mold gate of a mold assembly installed in the molding system. The stem connector urges the movable piston to tilt at a tilt angle while the movable piston is moved along an interior of the cylinder, and in which the tilt angle is formed between a central piston axis extending through the movable piston and a central stem axis extends through the valve stem.

Rear quarter glass has a glass plate, a plastic molding, and a metal molding. A retainer is arranged between the plastic molding and the metal molding. The retainer has a first through-hole and a pin portion. The metal molding has a projecting portion that is inserted through the first through-hole. The projecting portion has an end section that projects from the first through-hole in a state inserted through the first through-hole. The plastic molding has a second through-hole through which the pin portion is inserted. The pin portion has an end section that projects from the second through-hole in a state inserted through the second through-hole. The end section of the projecting portion is swaged to the retainer by swaging through thermal deformation. The end section of the pin portion is swaged to the plastic molding by swaging through thermal deformation.

An injection molding apparatus and hot runner system are disclosed. The injection molding apparatus includes a plurality of mold plates in which the hot runner system is received. A manifold receives molding material and has a manifold channel that extends between an inlet and an outlet. A nozzle delivers moldable material to a mold cavity. The nozzle has a nozzle channel in fluid communication between the manifold channel and the mold cavity. A valve pin seal is located at the upstream end of the nozzle, and a valve pin that is connected to an actuator extends through the manifold and nozzle is slidably received in the valve pin seal. The hot runner system further includes a thermal bridge that is in conductive thermal communication with the valve pin seal and a cooled one of the plurality of mold plates.

The disclosure relates to a deflecting device, for deflecting a melt flow in a distributing plate of an injection molding machine, with a base body, wherein a deflecting channel is arranged inside the base body. In order to create an improved solution for diverting the melt flow in a hot runner manifold, the base body can have a separating surface which divides the base body into a first body half and a second body half, wherein the first body half and the second body half can be joined together firmly. The disclosure furthermore relates to a method for producing the deflecting device.

Rear quarter glass has a glass plate, a plastic molding, and a metal molding. A retainer is arranged between the plastic molding and the metal molding. The retainer has a first through-hole and a pin portion. The metal molding has a projecting portion that is inserted through the first through-hole. The projecting portion has an end section that projects from the first through-hole in a state inserted through the first through-hole. The plastic molding has a second through-hole through which the pin portion is inserted. The pin portion has an end section that projects from the second through-hole in a state inserted through the second through-hole. The end section of the projecting portion is swaged to the retainer by swaging through thermal deformation. The end section of the pin portion is swaged to the plastic molding by swaging through thermal deformation.

A component is described for an injection molding apparatus. The component is mounted within a manifold as a junction between a supply channel, which has a first axis, and an injection channel, which has a second axis and leads to an injection nozzle for injection towards a mold cavity. A nozzle shutter crosses the feed channel and the component along the second axis. The component comprises an outer surface comprising inlets adapted to receive the molten material arriving from the supply channel, a central cavity which is in fluid communication with the injection channel to send the molten material there, and internal channels which cross the thickness of the component. The terminal section of each internal channel in proximity of the respective outlet develops so as to introduce the molten material into the central cavity according to an introduction direction directed towards the injection channel.

A component for a nozzle for injecting molten plastic into a molding cavity of a container, in particular of a test tube or a bottle preform, the component comprising a first body in which a shutter can slide along an axis; wherein the first body has a wall which extends about said axis; wherein said wall is provided with a first zone adapted to guide the sliding of the shutter along the axis, and a second zone which delimits a first stretch of a channel for the molten plastic; wherein said first body is provided with at least one through hole which crosses said wall, in particular transversely to the axis, which allows the molten plastic to pass through, in particular to enter, said first stretch of the channel.

A component of an injection molding apparatus for conveying a flow of molten plastic material from a supply channel to an injection channel coaxially crossed by a shutter, said component comprising a body provided with a central part crossed by a through hole defining a longitudinal axis for the passage of said shutter; a first bulkhead protruding from said central part, distal from an end edge of the through hole and adapted to be arranged at one end of the supply channel for dividing the flow of molten plastic material into two portions; a second bulkhead and a third bulkhead, protruding in a diametrically opposite manner from said central part, separated from each other by the through hole and proximal to said end edge of the through hole, and adapted to be arranged at one end of the injection channel to accompany said two flow portions in said injection channel; wherein the first bulkhead is arranged on the same side as the third bulkhead with respect to said central part, and wherein a first lateral surface and a second lateral surface are arranged at a first side and a second side, opposite the first side, of said first bulkhead, respectively, to accompany said two flow portions from said first bulkhead toward the second bulkhead and the third bulkhead.