| 摘要 |
A nozzle for so called hot runner molds and intended for injection molding of plastic comprises two body members (2 respectively 3) which are connected to each other while constituting an annular space (4) encapsuled between the members, in which a heating element (5) or the like is located. In the interior of the nozzle there is provided a heat transferring means (7) which in a manner known per se is in contact with the rest of the nozzle by means of ribs or the like (8). Said ribs are axially located intermediate and inside the end surfaces of the heating element (5) and the heat will consequently be concentrated to the zone (8). The body member (2) has a tubular portion (12) with a bevelled end surface (13) which by means of grinding compound is ground against a corresponding conical portion (20) of the body member (3) by turning the body members relative to each other. The ribs of the heat transferring means (7) as well as the channel (6) of the nozzle is slightly conical for the sake of fastening the former by pressing and a securing is preferably obtained by means of a pin (32) which penetrates the heat transferring means (7) and extends into the tubular portion (12) of the body member (2). |
