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Suction device for extracting air out of the nip between a web and a chill roll in a web-fed rotary offset printing press
Suction device for extracting air out of the nip between a web and a chill roll in a web-fed rotary offset printing press
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机译：在卷筒纸轮转胶印机中用于从卷筒纸和冷却辊之间的辊隙中抽出空气的抽吸装置
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摘要
The mouth (22) of the suction nozzle (20) is aimed at the gap between the incoming strip (14) of material and the roller. The mouth can consist of a slot parallel to the gap (12), and can extend for the full length of the cooling roller (16), and it can be situated at the tip of a wedge-shaped housing. Plates (34,37) can be mounted on the housing rear wall (32) to divert entrained air from the strip and roller, or alternatively this can be done by nozzles discharging against their travel direction, and the rear wall can also contain a suction opening (38).
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