Spacer clip for injection molding heater element

Details Spacer clip for injection molding heater element Spacer clip for injection molding heater element

B - Operations, Transporting

29

C

18/709

B29C 45/27 (2006.01) H05B 3/48 (2006.01)

Patent

CA 1167221

ABSTRACT OF THE DISCLOSURE This invention relates to a spacer clip for an injection molding electric heating element. A number of clips, each formed of a continuous band, are slipped over one end of the heating element and slid along to predetermined positions. Each clip is then crimped to the heating element in that position which forms a finger which extends radially from the heating element in a predetermined orientation. The heating element with the spacer clips attached is located in a suitable mold for casting and the fingers of the clips locate each coil of the element with sufficient clearance from the mold and the other coils. The thickness of the conductive heater cast around the heating element is important to provide uniform heat transfer. The spacer clips are formed of a material such as stainless steel which has sufficient pliability to be securely, crimped to the heating element, but sufficient strength to reliably retain the heating element in position. In one embodiment, the projecting finger may be twisted to give it additional rigidity. This structure has the advantage over previous spacer plates that no extensive fault lines are formed by the spacer clips. -1-

392020

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