| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of adjusting mold thickness of toggle-type mold clamping device by which the mold thickness can be adjusted highly accurately for various kinds of molds a, and also a mold-thickness adjusting motor can be made small in size, reduced in energy consumption and low in cost. SOLUTION: The method of adjusting mold thickness of toggle-type mold clamping device includes: a first process T1 in which a mold-clamping motor 4 is driven and controlled and, thereby, a cross head 5h of a toggle link mechanism 5 is moved to a preliminary position Xr set preliminarily so as to get to a position on the mold open side rather than a mold closure position Xs; a second process T2 in which, after the first process T1 is completed, the mold-thickness adjusting motor 2 is driven and controlled and a pressure-receiving platen 3 is advanced and moved to a mold closure position Xc where a mold C is closed; a third process T3 in which, after the second process T2 is completed, a mold clamping motor 4 is driven and controlled, thereby, the cross head 5h is advanced and moved, at the same time, a torque of the mold clamping motor 4 is limited, thereby, the mold C is pressed and the mold-thickness adjusting motor 2 is driven and controlled, thereby, the pressure-receiving platen 3 is moved and, at the same time, the cross head 5h is moved to the mold closure position Xs; and a fourth process T4 in which, after the third process T3 is completed, a clamping margin Lp of the mold C corresponding to a prescribed mold clamping force is set. COPYRIGHT: (C)2011,JPO&INPIT
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