초록 ▼

An apparatus performs induction heating or dielectric heating of a mold for an injection molding system up to a desired temperature within a short time by using high frequencies or microwaves. The electric current of high frequency generated from a high frequency generator flows through a coil embed

An apparatus performs induction heating or dielectric heating of a mold for an injection molding system up to a desired temperature within a short time by using high frequencies or microwaves. The electric current of high frequency generated from a high frequency generator flows through a coil embedded in the mold to induction-heat the mold by an induction phenomenon with the mold, and microwaves from a microwave generator heats the dielectric material within the mold, thereby preventing cooling of the mold when a resin fluid is injected into a cavity.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for heating an injection molding system comprising:an injection controller for controlling an injection apparatus and generating a filling signal;a controlling section which generates a heating start signal upon receipt of said filling signal, counts a heatin

[ What is claimed is:] [1.] An apparatus for heating an injection molding system comprising:an injection controller for controlling an injection apparatus and generating a filling signal;a controlling section which generates a heating start signal upon receipt of said filling signal, counts a heating time, and generates a heat reset signal when said heating time is equal to a preset time having a range of 10 seconds to 15 seconds;a microwave generator which generates a microwave of predetermined frequency upon receipt of said heating start signal and terminates generation of said microwave upon receipt of said heat reset signal;a mold being dielectric-heated by said microwave and comprising a microwave guide tube for migrating and dispersing said microwaves, and a fixed plate having an injection aperture and defining a first half of a cavity, said first half of said cavity having an inner wall with a first composite layer of glass fiber abutted thereto; anda movable plate defining a second half of said cavity, said second half of said cavity having an inner wall with a second composite layer of glass fiber abutted thereto;wherein said microwave guide tube extends through said second composite layer; andwherein said injection controller joins said movable plate with said fixed plate.