【発明の名称】ウェブ印刷機の引張ローラ装置

Japanese Patent JP2919026

B2

The pull roller unit has only one suction roller (20b, 21b) as pull roller, in which a permanently acting suction effect acts along that circumferential section which is wrapped by the paper web whereas the remaining circumferential section is not subjected to any suction effect. The suction roller has a fixed, hollow roller core (65) and a roller shell (61) which can be rotated about said core and is made of carbon fibres impregnated with plastic with suction openings (62) distributed over its circumference. The roller core (65) is provided on one side with an axial nozzle (68b) for attachment to the machine frame and for connection to a source of negative pressure, on its other side with a bearing journal (66), and on its circumference exhibiting passage openings (70) with two radial partitions (69) which are arranged with a certain angular spacing from one another and enclose a suction chamber between them. The roller shell is mounted on the bearing journal (66) by a conical connection flange (61b), which is attached directly to the armature shaft of the drive motor, and on the nozzle (68b) by its other end, the gap between the roller shell and the partitions (69) being almost airtight. Instead of a suction roller, a pull roller can also be provided which is subjected to compressed air on the outside along the circumferential section mentioned, or the suction air and compressed air effect can be combined.

ARUBUREHITO YOZEFU GERUMAN
YOHANESU GEORUKU SHAEDE
YOOAHIMU ARUFUREETO HAINTSU RATSUPU

JP22679190A

July 12, 1999

August 30, 1990

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DO RA RYU JIORI SA

B41F5/00; B41F11/02; B41F13/02; B41F11/00; B41F13/06; B65H20/14; B65H27/00; (IPC1-7): B41F13/02; B41F11/02; B65H20/14

JP1181660A
JP275561A
JP61135840U
JP6111647U

Aoki Akira (3 outside)

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