Printing press with a dynamic expansion band adjusting mechanism

Details Printing press with a dynamic expansion band adjusting mechanism Printing press with a dynamic expansion band adjusting mechanism

1993-04-15

1994-05-24

Eickholt, Eugene H.

Printing

Rolling contact machines

Rotary

101378, 492 21, 492 28, B41F 1324

Patent

active

053138830

ABSTRACT:
A self-locking mechanism (10) for selectively dynamically adjusting expansion bands (12) of a running cylinder (11) of a rotary printing press during rotation includes a cylindrical adjustment member (30, 72) with a diameter substantially the same as the diameter of the running cylinder which engages a band box (22, 80) rotating with the running cylinder (11) to make the selected adjustments in response to rotation of cylindrical adjusting member (30, 72) at a speed different from the speed of the running cylinder (11). The speed difference is produced by a differential (52, 75) stationary with respect to the running cylinder (11) which engages the cylindrical member (30, 72) and the running cylinder (11). The cylindrical adjusting member (30, 72) is mounted to the running cylinder (11) on an interrupted journal (35). The cylindrical adjusting member (30) has an inner engagement surface (38) for engagement with the band box (22) and another engagement surface (39) for engagement with the differential. In another embodiment, the cylindrical adjusting member (72) has a side engagement surface (78) for engaging the band box (80) and another engagement surface (83) for engaging the differential.

REFERENCES:
patent: 2555267 (1951-05-01), Crafts
patent: 3477709 (1969-11-01), Neal et al.
patent: 3783780 (1974-01-01), Saueressig
patent: 4044669 (1977-08-01), Luther
patent: 4150622 (1979-04-01), Stollenwerk
patent: 4805502 (1989-02-01), Ishigure
patent: 4936561 (1990-06-01), Mukai
patent: 5036765 (1991-08-01), Keilhau
patent: 5168808 (1992-12-01), Prem et al.

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