Paper folding machine

Details Paper folding machine Paper folding machine

1985-02-13

1986-03-04

Eickholt, E. H.

Sheet-material associating

Associating and folding

Sheet associating

493420, B42C 100

Patent

active

045736723

ABSTRACT:
A folding machine for folding sheet material comprises a housing defining a space and having an in-take opening and a discharge opening for sheet material before and after it is folded. A frame is provided in the housing and carries four rollers which are engaged with each other to form a take-in nip for receiving sheet material from the in-take opening, a first folding nip for executing a first fold on the paper and a second folding nip for executing a second fold of the paper. The rollers are engaged to each other by gears and are rotated by a single electric motor for moving the sheet material from the take-in nip to the first folding nip and from the first folding nip to the second folding nip. A pocket is formed upstream of the first folding nip in the housing for receiving the sheet of paper to stop its forward progress. The sheet of paper is continued to be fed by the take-in nip so that it folds into the first folding nip which draws the now once folded paper from the first pocket. A second pocket is provided downstream of the first folding nip to permit the second folding nip to form a second fold whereupon the folded sheet material is discharged through the discharge opening of the housing. The housing is formed in two articulated parts as is the frame so that the housing can be opened. Three of the rollers which define the take-in and second folding nips are connected to one part of the frame so that when the housing is opened these rollers are separated from the other roller. The housing and frame are designed to open on a plane which is near a tangential plane passing through the first folding nip. When the housing is opened the rollers and the pockets are exposed for removing paper that might have jammed in the folding machine.

REFERENCES:
patent: 3255569 (1966-06-01), Hannon et al.
patent: 3416785 (1968-12-01), Sherman
patent: 4167265 (1979-09-01), Whittenberger
patent: 4403981 (1983-09-01), Wiithrich
patent: 4518380 (1985-05-01), Shimizu et al.

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