Vibratory sheet feeder

Details Vibratory sheet feeder Vibratory sheet feeder

1991-08-06

1992-09-22

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

By means to convey sheet

271266, 271267, 271270, 271193, 310323, B65H 702

Patent

active

051490803

ABSTRACT:
A vibratory feeder for sheets includes sheet conveying members for holding and conveying the sheet utilizing travelling waves, a sheet feed detection member for detecting a feed of the sheet, and a drive control circuit for applying alternating electrical signal to each of electric/mechanical energy conversion elements on the basis of the sheet feed detection information from the sheet feed detection member. The travelling wave is formed in each of the sheet conveying members by applying the alternating electric signal controlled by the drive control circuit to each of the electric/mechanical energy conversion elements, by which a conveying force is applied to the sheet. The drive control circuit feeds the sheet in the following manners on the basis of the sheet feed detection information from the sheet feed detection member. The sheet is fed first at a fixed high speed until it has been fed to a position close to the desired distance. Thereafter, feeding of the sheet is temporarily suspended, and then the sheet is fed stepwise until it reaches the desired position.

REFERENCES:
patent: 4997177 (1991-03-01), Mori et al.
patent: 5062622 (1991-11-01), Kataoka et al.
patent: 5071113 (1991-12-01), Nakamura et al.
patent: 5094444 (1992-03-01), Seki

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