Multiple hot runner injection bush

Details Multiple hot runner injection bush Multiple hot runner injection bush

B - Operations, Transporting

22

C

22/67

B22C 9/08 (2006.01) B29C 45/27 (2006.01)

Patent

CA 1216131

ABSTRACT OF THE DISCLOSURE A multiple hot runner injection bush for lateral tunnel gating, with a foot and a shaft heated by a heating element and a central hot sprue arranged therein, further- more, with a heated nozzle head which contains radially extending injection channels. The technical problem of the invention is seen in the exact heat control and adjustment of the nozzle head if a plurality of mould nests is gated. The nozzle head is provided as a plate-like head and pro- jects beyond the diameter of the shaft by a multiple dis- tance of the diameter of the shaft (two times through five times). The nozzle head incorporates, at least, four radially extending injection channels. The nozzle head comprises a plane ring face, adjacent to the shaft, and an outer covering apron. A copper ring is attached on the ring face. The copper ring carries a spirally arranged high capacity coil heater.

433916

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