Device for adjusting the quality factor of a mold with a self-contained induction heating system

摘要

A mold with a self-contained heating device comprising a mold body, a connector and an adjustment coil. The mold body comprises comprising an induction heating or tooling circuit having a resistance R1 and an inductance L1. The tooling circuit comprises an inductor extending inside a closed cavity of the mold body. The connector connects the tooling circuit to a high-frequency current generator. The adjustment coil has a resistance R2 and an inductance L2 that does not induce current in the mold body. The adjustment coil is connected to the tooling circuit, between the tooling circuit and the connector.

主权项

1. A mold with a self-contained heating device, comprising:
a mold body comprising a tooling circuit having a resistance R1 and an inductance L1, the tooling circuit comprising an inductor extending inside a closed cavity of the mold body; a connector to connect the tooling circuit to a high-frequency current generator; an adjustment coil having a resistance R2 and an inductance L2 that does not induce current in the mold body, the adjustment coil is connected to the tooling circuit, between the tooling circuit and the connector, the inductance and the resistance of the tooling circuit are combined with the inductance and the resistance of the adjustment coil to adjust operating parameters of the mold with the self-contained heating device and to form an oscillating electrical circuit with a resonance frequency f0=ω0/2π, wherein a quality factor Q of the oscillating electrical circuit formed when the tooling circuit connected to the adjustment coil is connected to a high-frequency current generator is a number between 2 and 5, where Q=L1 ω0/R1.