专利名称：Apparatus for setting a clamping load发明人：Robert E. Farrell申请号：US06/080180申请日：19791001公开号：US04281977A公开日：19810804
摘要：The clamping preload in a molding machine or the like is set by adjusting thelength of tie bars which support two die plates for opening and closing movement and athrust plate. A clamping mechanism of given stroke is positioned between the thrustplate and one of the die plates, and operates to close the die plates at one limit of theclamping stroke. With the clamping mechanism set at its limit and the tie bars set toestablish a slight spacing between the die plates, the length of the tie bars is adjusted bymeans of a drive motor until the die plates are in contact without substantial preload.The clamping mechanism then opens the die plates and the drive motor is furtherenergized to adjust the length of the tie bars and bring the die plates closer to oneanother by an amount corresponding to a preselected preload. The adjustment ismeasured from a high ratio mechanical drive connecting the drive motor to the
adjustable tie bars, and the measured adjustment is compared with a desired adjustmentcorresponding to the preselected preload to deenergize the drive motor when thedesired adjustment is reached.
申请人：PACKAGE MACHINERY COMPANY
代理机构：McCormick, Paulding & Huber
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