Sheet feeding or delivering – Feeding – Separators
Patent
1988-02-19
1989-09-19
Rolla, Joseph J.
Sheet feeding or delivering
Feeding
Separators
271114, 271118, 4147978, B65H 304
Patent
active
048674338
ABSTRACT:
Sheet feeding apparatus, particularly for feeding corrugated paperboard sheets to container blank processing machinery, has an indexing transmission for cyclically accelerating and decelerating belts or the like for frictionally engaging and feeding sheets from an end of a stack of sheets. A cam arrangement cyclically shifts the feed belts or the like relative to a stack support surface between an operative position for feeding and an inoperative position. The accelerating and decelerating cycle of the belts occurs twice per machine cycle. The cam arrangement preferably comprises a single lobe cam and a double lobe cam, either of which can be selectively chosen for shifting the belts. When feeding one sheet per machine cycle of the downstream machinery, the single lobe cam is employed to shift the belts into the operative mode only once per machine cycle. Shorter sheets can be fed at twice the production rate by employing the double lobe cam to shift the belts into the operative mode twice per machine cycle, this mode taking advantage of the second accelerating/decelerating cycle of the belts.
REFERENCES:
patent: 3735976 (1973-05-01), Watson
patent: 3888479 (1975-06-01), Eder et al.
patent: 4081945 (1978-04-01), Calvert et al.
patent: 4494745 (1985-01-01), Ward, Sr. et al.
patent: 4643413 (1987-02-01), Ward, Sr. et al.
Bachmann, Jr. John H.
Van Noy John R.
Wells Robert R.
Bartlett Edward D. C.
Dent Boyce C.
Reiss Steve
Rolla Joseph J.
The Ward Machinery Company
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