Die with heating device

Abstract

The invention discloses a die with a heating device. Main points of the invention are as follows: an insulating layer and a conducting layer which are electrically isolated are arranged on an upper die or a lower die or simultaneously arranged on the upper die and the lower die, the surface of the conducting layer is an interface between the die and a material, current is directly switched on the conducting layer so as to allow the current to crowd on the surface of the conducting layer of the upper die, or the lower die, or the upper die, the lower die and the like, and the surface of the conducting layer is preheated to an operating temperature from room temperature. Thus, the die provided by the invention may be only composed of the upper die, the lower die, a current conducting plate and a conductor wire and electrical insulation is carried out on the conducting layer and the insulating layer of the upper die, or the lower die, or the upper die and the lower die so as to achieve effects of the prior art, thereby realizing the purpose of cost reduction; moreover, since current only crowds on the surface of the conducting layer of the upper die, or the lower die, or the upper die and the lower die, uniform distribution of surface temperature of the die can be realized regardless of changing of the shape of the surface of the conducting layer.

Description

technical field [0001] The invention relates to a mold for thermoplastic or thermosetting process, in particular to a mold with a heating device. Background technique [0002] According to Chinese Patent Application No. 200680031567.9 "Equipment for Processing Materials Using Induction Heating", Taiwan Announcement No. I224548 "Mold Instant Preheating Method and Device", and Taiwan Announcement No. I279304 "High Frequency Heating Mold Method and Device" and other patents As shown, heat conduction coils with high-frequency induction magnetic waves are installed inside the mold or on the parting surface of the mold, and the heat conduction coils are connected to the high-frequency power supply system to load high-frequency currents on the heat conduction coils. Heat up to working temperature while confining the heating to the interface between the mold and the material. [0003] However, the high-frequency furnace itself is an electric energy source. Although there are no saf...

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Problems solved by technology

[0003] However, the high-frequency furnace itself is an electric energy source. Although there are no safety concerns, the equipment cost is high, and the high-frequency wave is only effective for shallow and flat mold cavities. It is difficult to apply to the surface of the mold core with complex shapes, and there are The problem of uneven heating, that is, uneven temperature distribution on the surface of the mold, and problems such as unstable induction current, long heating time, and high power consumption

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