HORIZONTAL MULTISTAGE PRESS

摘要

Hot-pressing is performed by driving and controlling pressing cylinders (150LH, 150RH, 150LL, 150RL) separately so that even if, for example, the size or the material of the board to be processed (W1) changes, the overall thickness of the processed body (W) after hot-pressing is within a prescribed range of permissible dimensions over the entire pressed surface (141). Each pressing cylinder (150LH, 150RH, 150LL, 150RL) is provided with a pressing cylinder linear encoder (151LH, 151RH, 151LL, 151RL) that detects the amount of decrease in overall thickness of the processed body (W) as the amount of ram movement and with a pressing cylinder pressure sensor (152LH, 152RH, 152LL, 152RL) that detects the pressing force of press plates (140F, 140B) as internal cylinder pressure in the pressing cylinders (150LH, 150RH, 150LL, 150RL). The rams (153LH, 153RH, 153LL, 153RL) of the respective pressing cylinders (150LH, 150RH, 150LL, 150RL) are each affixed to the press plates (140F, 140B) so that the pressing position of the press plates (140F, 140B) with respect to the pressed surface (141) does not vary. The pressing cylinders (150LH, 150RH, 150LL, 150RL) are driven and controlled separately to perform hot-pressing, so that even if, for example, the size or the material of the board to be processed (W1) changes, the overall thickness of the processed body (W) after hot-pressing is within a prescribed range of permissible dimensions over the entire pressed surface (141). A horizontal multistage press is thereby provided that, by controlling the operation of multiple pressing cylinders separately, can keep the thickness of a board (laminate board) after hot-pressing within a range of permissible dimensions even if, for example, the size or material of the conveyed board changes. A horizontal multi-stage press is also provided, which, by controlling the operation of multiple pressing cylinders separately or jointly, can keep the thickness of a board (laminate board) after hot-pressing within a range of permissible dimensions without moving or adjusting the pressing cylinder pressing positions, when, for example, the size of the conveyed board changes, and can also adapt to changes in board material.