| 摘要 |
A hot plate temperature control system and a method for a multi-layer hot press are provided to improve productivity and to improve quality of a PCB(Printed Circuit Board) produced, by removing a temperature variation of hot plates in a high-temperature state. A multi-layer hot press(50) comprises a pressing unit arranged to the upper part of a base to press a lower bed; vertical frames set up to the sides of the vase; an upper bed horizontally installed to the upper part of the vertical frames; and hot plates(56,57) for pressing a PCB in a high-temperature and high-pressure state between the lower bed and the upper bed and completing the PCB. A hot plate temperature control system for the multi-layer hot press has a temperature control unit keeping the temperature of the hot plates high without a temperature variation. The temperature control unit comprises electric heaters(61) installed to the center of the hot plates to raise the temperature in a high temperature state; thermal oil lines(62,63) installed to the upper and lower sides of the electric heaters to reduce the temperature variation; and a circulation unit(65) installed to the thermal oil lines to reduce the temperature variation of the hot plates or cool the hot plates by continuously circulating thermal oil.
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