GB1059158A - Folding and collecting device for rotary printing machines - Google Patents

Abstract

1,059,158. Collecting and folding papers. PLAMAG PLAUENER DRUCKMASCHINENWERK VEB. April 14, 1965, No. 15925/65. Heading B6H. A folding and collecting device for a rotary printing machine comprises a cylinder 1, Fig. 5 (not shown), mounted on a shaft 2 and dimensioned for the peripheral reception of three sheets, the cylinder carrying three folding blades 7 mounted on shafts 6 on a carrier 5 which is eccentrically mounted with respect to the shaft 2, so that by an arrangement of the gearing between the cylinder 1 and the shafts 6 folding action occurs only between the rollers (17, 18). Fig. 5. To fold single sheets, i.e. non-collection, the folding blade carrier 5 is geared for a 1: 1 drive with respect to the shaft 2 so each blade 7 emerges once every revolution. They may be coupled by parallel cranks 22, 23, Fig. 3 (not shown). The blades themselves are driven by planet gears 14, 13. Gear 14 when operative engages the internal teeth of a rim gear 16 so that a ratio of 3: 1 is given and for one revolution of the cylinder 1 the folding blade tips travel through a three-pointed cycloid, illustrated in chain lines, Fig. 5. Single sheet folding is thus achieved. When it is desired to collect two sheets together for folding, the planet gear 13, Fig. 4, is effective to drive the folding blades 7 by axially moving a gear wheel body 32. The planet gear 13 thereby engages gear 31 driven by a spur gear 32 on the body 32 and which is driven by a gear 34 associated with a cutting cylinder (not shown).