HORIZONTAL MULTISTAGE PRESS DEVICE

摘要

A horizontal multistage press device is configured in such a manner that two pressing cylinders (150L, 150R) are arranged on the left and right of an opening and closing cylinder (180) (center (O) of pressing) such that the pressing cylinders (150L, 150R) are at equal distances (L) from the opening and closing cylinder (180) and that the pressing cylinders (150L, 150R) are separated from a conveyance reference surface (B) by a distance substantially the same as the distance from the conveyance reference surface (B) to the opening and closing cylinder (180).  The opening and closing cylinder (180) is equipped with a linear encoder (181) adapted for detecting, as the amount of movement of a ram (183), the amount of a reduction in the overall thickness of an article (W) to be processed.  Such detection is performed when the article (W) is processed from a state in which pressing plates (140F, 140B) are being closed to a state in which the article (W) has been heated and pressed by the pressing cylinders (150L, 150R).  The pressing cylinders (150L, 150R) are equipped with pressure sensors (151L, 151R) for detecting, as the inner pressure of the pressing cylinders, pressing force of the pressing plates (140F, 140B).  Thus, the horizontal multistage press device is equipped, separately from the pressing cylinders for pressing the pressing plates, with the opening and closing cylinder for opening and closing the pressing plates and measures the overall thickness of the article to be processed during heating and pressing based on the operation distance of the opening and closing cylinder, and by this, the yield of a plate material (laminated plywood) after being heated and pressure bonded is easily improved.