Patent ID: 8899963

Claim:
A hot nozzle for spraying of plastic components, the hot nozzle comprising: a multipart nozzle body including a tip inset including a tip element having a tip section protruding outwardly beyond a circumferential surface of the multipart nozzle body into a molding plate; wherein the tip section of the tip element is penetrated by a shut-off needle which is movable in a reciprocating manner by a drive, the shut-off needle being movable between a position in which the shut-off needle closes off a feed borehole in the molding plate and a position in which the shut-off needle opens the feed borehole; wherein the shut-off needle and the tip element are aligned in the same direction and the feed borehole is aligned in a direction of a main axis of the tip element; wherein the shut-off needle axially completely penetrates the tip element and the shut-off needle includes a drive tooth on a side facing away from the feed borehole, which drive tooth engages in a recess in a drive shaft held rotatably in the multipart nozzle body; and wherein the recess in the drive shaft has the shape of an involute gear recess.