Folding jaw adjustment system for a printing machine folding cyl

Details Folding jaw adjustment system for a printing machine folding cyl Folding jaw adjustment system for a printing machine folding cyl

1991-03-20

1992-03-17

Look, Edward K.

Sheet-material associating

Associating and folding

Sheet associating

270 47, 270 50, 493425, 493429, 493426, B42C 100

Patent

active

050961756

ABSTRACT:
To move folding jaws (4, 5) in a scissor-like or pincer-like movement symmetrical with respect to a center line (CL) and to permit adjustment of the gap or opening of the jaws, for acceptance of folded substrates of different thicknesses, the jaws are coupled together by a rotation reversal arrangement (14, 114, 112, 314) so that rotation of one of the carrier bodies (6) will be transferred as an equal and opposite movement to the other (7) of the carrier bodies. An axial position adjustment spindle (25, 125, 325), controllable by a hand wheel (29) or servo motor (30), changes the axial position of gears rotating or rotating with a shaft (2, 202, 402) of a folding jaw cylinder (1, 201, 401), at least some of the gears or gear pairs having inclined teeth, to thereby transfer a positioning movement into a relative rotary shift of the respectively rotating gear with respect to the gear driving the shaft, thereby causing rocking or tilting of the folding jaw carriers (6, 7).

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