Injection molding nozzle having multiple thickness heating...

Details Injection molding nozzle having multiple thickness heating... Injection molding nozzle having multiple thickness heating...

B - Operations, Transporting

29

C

18/703

B29C 45/74 (2006.01) B23P 15/00 (2006.01) B29C 45/27 (2006.01) B29C 45/30 (2006.01)

Patent

CA 1261576

ABSTRACT OF THE DISCLOSURE This invention relates to an injection molding nozzle having an improved heating element configuration in the tapered nose portion and a method of making it. A longitudinal portion of the heating element which is integrally brazed centrally into the nose portion is bent back upon itself at least once to provide a multiple thickness part. The type and length of the multiple thickness part which is selected to provide additional heat depends upon the application which the nozzle is to be used for. The multiple thickness part of the heating element is swaged to provide a more circular cross-section before being brazed into a larger diameter part of the heating element bore through the nose portion of the nozzle.

563981

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