Device for instantly pre-heating dies

Details Device for instantly pre-heating dies Device for instantly pre-heating dies

2005-11-01

2005-11-01

Hoang, Tu (Department: 3742)

Electric heating

Inductive heating

With workpiece support

C219S672000

Reexamination Certificate

active

06960746

ABSTRACT:
A device for instantly pre-heating dies includes an inductive heating coil disposed between two dies. The inductive heating coil includes a spiral shape for generating high frequency induction heat energy. When the dies are separated by a mechanical arm, the inductive heating coil is disposed between die surfaces of the dies, so that high frequency induction heat can act on a die contact part, to allow the die contact part to be pre-heated instantly. As result, not only its pre-heating efficiency is enhanced, electric energy can also be saved and at the same time, the melted plastic material may be ensured to smoothly flow inside the die contact parts.

REFERENCES:
patent: 3689728 (1972-09-01), Marini
patent: 3731040 (1973-05-01), Kasper
patent: 5338497 (1994-08-01), Murray et al.
patent: 6638048 (2003-10-01), Yim

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