Combined folded substrate transfer and speed matching apparatus

Details Combined folded substrate transfer and speed matching apparatus Combined folded substrate transfer and speed matching apparatus

1988-09-29

1990-08-07

Look, Edward K.

Sheet-material associating

Associating and folding

Sheet associating

270 211, 270 49, 270 50, B42C 100

Patent

active

049461516

ABSTRACT:
To match the speed of a folding flap cylinder (12) folding sheets cut from a web in half to a slower speed of a gripper chain delivery system (17, 18), a transfer cylinder (15) with grippers (16) is provided which operates at a circumferentially non-uniform speed (FIG. 3, curve 30), in which the speed of the transfer cylinder (15), when receiving a sheet from the folding flap cylinder (12), is essentially synchronous therewith, and then decelerates to be essentially synchronous with the speed of the gripper chain delivery system (17), for subsequent acceleration to the speed of the folding flap cylinder. The circumferentially non-uniform speed is obtained by driving the transfer cylinder (15) through a worm transmission in which the worm has a non-uniform pitch or non-uniform angle of inclination of the worm groove or the respective worm lands defining the groove.

REFERENCES:
patent: 4260144 (1981-04-01), Trutschel
patent: 4381106 (1983-04-01), Laebach
patent: 4564183 (1986-01-01), Muller

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