Apparatus and method for aligning sheets

Details Apparatus and method for aligning sheets Apparatus and method for aligning sheets

1986-03-28

1987-10-27

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

With means to align sheet

271252, B65H 702

Patent

active

047024690

ABSTRACT:
A device for aligning sheets fed by a sheet feeder to a sheet-processing machine includes a suction pull bar located in an aligning region of the sheet feeder, drive device for reciprocatingly displacing the suction pull bar in the plane of a sheet transversely to sheet travel direction through the sheet feeder, air control device through which the drive device is connected to a vacuum generator, positioning device for controlling the drive device the suction pull bar being acuatable for applying suction to the underside of a sheet which has reached the aligning region and after the sheet has been aligned by the leading edge thereof, the suction bar being actuatable for moving the sheet into an in-register side position and having device for applying fresh air thereto for releasing the sheet exactly in the side position simultaneously with a take-over of the sheet-in register by the sheet conveying device and a method for operating the device.

REFERENCES:
patent: 3617048 (1971-11-01), Albert
patent: 4060237 (1977-11-01), Degen et al.
patent: 4184673 (1980-01-01), Weisbach
patent: 4210320 (1980-07-01), Feldkamper
patent: 4588184 (1986-05-01), Jeschke
patent: 4591143 (1986-05-01), Jeschke
patent: 4743277 (1973-07-01), Bolza-Schumann et al.

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