Abstract: An injection moulding device includes an elongated nozzle having a central bore, a forward end with an outlet for supplying molten thermoplastic material via the bore and the outlet to a cavity, and a heating element around the nozzle, the heating element having a rear end and a forward end and being helically wound around and supported by the nozzle. The helical windings of the heating element are substantially unrestrained in a circumferential direction of the nozzle, wherein one of the ends of the heating element can be radically displaced around the nozzle in a circumferential direction.

Abstract: An injection molding device (1) including an actuating cylinder (15) with a piston (33). A valve pin (11) is actuated by the cylinder (15), the piston including a fluid passage (55) via which pressure medium can pass when the piston is in a position between its upper and its lower end position, and which is at least partly closed off when the piston is in its lower and/or its upper end position. Hereby relatively simple position indicator of the valve pin (11) is formed.

Abstract: The invention relates to an injection molding device (1) having an elongated nozzle (3) and a valve pin (11) coaxially in a channel of the nozzle. The valve pin can be displaced by means of an actuating cylinder (15) and is guided through a bush (13) at the upper end (12) of the nozzle. Cooling means (14, 18) are associated with said bush (13).

Abstract: An injection molding device (1) having a valve pin (11) and an actuating cyclinder (15) connected to the valve pin (11). The valve pin head (37) is releasably attached to the piston (33) of the cylinder such that the cylinder can be removed while leaving the valve pin (11) from the nozzle such that a low headspace can be achieved above the nozzle.