| 摘要 |
Injection nozzle (8) for polymers which are not crosslinked, but which can be crosslinked, especially gum elastic, rubber and polysiloxanes discharges with its nozzle tip (15) in the area of the mold cavity (6) at the entry hole (18) which is located in the mold plate (2) and which discharges into a mold cavity (6). In the nozzle (8) there is a nozzle needle (40) which can be moved axially by a linear motor (50) and which can be moved out of the closed position which seals the hole (16) in the nozzle tip (15) and into the open position in which the end of the needle (40) is located at a distance from the tip hole (10) in the nozzle tip (15). The injection nozzle (8) is cooled via a temperature control jacket (13, 14) through which a temperature control liquid flows. In the closed position the end surface (73) of the nozzle needle (40) is flush with the surface (74) of the mold cavity (6) in which the entry hole (18) is located.
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