To separate the uppermost one piece of soft cloth alone from the others at a time when those of suchlike soft cloth being weak-kneed and large in ventilability like a nonwoven fabric available in the lining outer skin of an automobile ceiling are stacked in piles.

A mounting frame 5 is installed in a retractable rod 41 of a push-pull mechanism 4, and a keep plate 6, a symmetrical pair of needle holders 8 and 8, and a holder driving mechanism 9 making these needle holders 8 and 8 horizontally shift in a fixed range so as to make a symmetrical pair of needles 7 and 7 held by the needle holders 8 approach or separate, are all installed in this mounting frame 5. In this constitution, a tip of the needle 7 is projected as far as a shorter size than the thickness size of one soft cloth in advance through an opening 61 of the keep plate 6.