Web gap control for corrugator

Details Web gap control for corrugator Web gap control for corrugator

1979-10-05

1981-09-15

Stoner, Jr., Bruce H.

Cutting

Processes

With subsequent handling

83 73, 83 79, 83 88, 83110, 271182, 271183, 271202, 271199, B26D 706, B26D 732, B65H 2966

Patent

active

042890527

ABSTRACT:
The size of the gap between the leading and trailing portions of a severed web is monitored with respect to an upper limit. The severed web is cut into box blanks which are transported on a stacker conveyor in shingled relation. The speed of the severed web through the corrugator is continuously controlled to prevent the gap from exceeding the limit when the gap reaches the stacker conveyor. Alternatively, the stacker conveyor is temporarily stopped until the size of the gap falls below the limit, and the stacker conveyor is re-started before the gap can close. In either case, the gap control prevents bumping of consecutive box blanks on the stacker conveyor following a change-over of production runs while insuring that the first blank of the new production run shingles on the last blank of the old production run with sufficient tail to insure retention of the first blank by stacker conveyor suction cups or tail grabbers.

REFERENCES:
patent: 3315956 (1967-04-01), Lyman
patent: 3507489 (1970-04-01), Wilshin et al.
patent: 3542362 (1970-11-01), Brockmuller et al.
patent: 3565423 (1971-02-01), Kluth
patent: 3659839 (1972-05-01), Baucke
patent: 3724840 (1973-04-01), Kuckhermann
patent: 4190146 (1980-02-01), Knuchel

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