Printing machine cylinder shaft attachment arrangement

Details Printing machine cylinder shaft attachment arrangement Printing machine cylinder shaft attachment arrangement

1981-02-03

1982-05-18

Eickholt, E. H.

Printing

Rolling contact machines

Rotary

B41F 1324

Patent

active

043299229

ABSTRACT:
To provide for self-alignment in axial as well as circumferential direction of bearing cups holding a fixed shaft of a cylinder, in which the cups are selectively rotatably adjustable and held by axial bolts extending into bearing blocks, the shaft ends or stubs (6, 7) have cross pins (17, 18) extending transversely thereto. The bearing cups (6, 7) are half-cylindrical and, upon positioning of one of the cups, while leaving the other one to be rotatable, engagement of the respective cross pin with the positioned cup will permit alignment of through-bores extending at right angles to the axis of the shaft through the shaft and into the bearing cup for attachment by an attachment bolt (15, 16). One of the bearings is fixed; the other bearing permits axial excursion to compensate for thermal expansion of the cylinder by interposition of a spring, for example a cup spring (13) surrounding a collar formed on the attachment bolt (12), tightening of the attachment bolt biassing the spring while permitting rotation of the respective bearing cup (9) and self-alignment thereof by engagement with the cross pin (18 ) of the half-cylindrical portion. Preferably, the cross pins simultaneously prevent loss of the attachment bolts (15, 16) by interfering with the clearance diameter through the hole in the shaft, thus preventing unintended removal of the bolts. Rotatable sleeves can be fitted over the attachment arrangement to prevent contamination.

REFERENCES:
patent: 2775935 (1957-01-01), Reinartz et al.
patent: 4207815 (1980-06-01), Watanabe
patent: 4214528 (1980-07-01), Mirow

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