Sheet feeding or delivering – Feeding – Separators
Patent
1994-06-27
1995-05-09
Skaggs, H. Grant
Sheet feeding or delivering
Feeding
Separators
271127, 271225, 271149, B65H 300
Patent
active
054133254
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a device for removing sheets one at a time from a pile of sheets, and more particularly to such a device in which the pile is vertically disposed and in which all the sheets may not have the same height and/or same width.
Many apparatuses, such as photocopiers, printers, etc, use horizontal unpiling devices. U.S. Pat. No. 4,852,868 describes such a device. The device includes a pressure arm that urges a pile of sheets towards a first friction drive roller. The friction drive roller draws the sheets towards a second friction drive roller that rotates in the same direction and is applied against a counter-rotating roller.
In devices for unpiling vertical piles of sheets, the known used in horizontal unpiling devices or less reliable single roller mechanisms are often used.
In addition to their complexity, and therefore to their high cost, a drawback of the conventional unpiling devices is that they draw the sheets such as they are oriented in the pile. This drawback is particularly critical in apparatuses designed for the processing of bank checks, for example, because the height of the checks is often different and some checks may be misaligned with the rest of the pile. If the misaligned checks are not correctly realigned, their processing (bar-code reading, printing of characters) may be carried out in bad conditions.
An object of the invention is to provide a vertical unpiling device having a particularly simple structure.
A further object of the invention is to provide an unpiling device operable to realign misaligned sheets.
These objects are achieved with a device for removing sheets one at a time from a pile of sheets placed perpendicularly to a supporting plane, including a pressure arm engaging a first face of the pile; a single friction drive roller having an axis perpendicular to the supporting plane, arranged at a predetermined distance from the supporting plane, the second face of the pile being engaged with the roller along a first edge; a low-friction abutment arranged in the vicinity of the roller, opposite the supporting plane, and includes a surface parallel to the roller axis and offset relative to the roller; and a pad substantially perpendicular to the supporting plane and yieldingly urged toward the abutment along a second edge that is located beyond the first edge.
According to an embodiment of the invention, the abutment includes a shoulder protruding towards the sheets, opposite to the friction drive roller.
According to an embodiment of the invention, the pad includes a facet that is practically tangent to the surface of the abutment at the second edge.
According to an embodiment of the invention, the pressure arm is loosely articulated along an axis perpendicular to the supporting plane, a spring pressing on the arm in the vicinity of the friction drive roller.
According to an embodiment of the invention, the pad is articulated along an axis that is parallel to the supporting plane so as to ensure a linear contact of the pad with the abutment.
According to an embodiment of the invention, the abutment is an idle roller that is arranged coaxially to the friction drive roller and has a smaller diameter.
According to an embodiment of the invention, the shoulder is a shoulder of the idle roller.
According to an embodiment of the invention, the unpiling device includes a routing device that is articulated about an axis perpendicular to the supporting plane and includes a free extremity urged towards a guiding plate of the sheets that are drawn by the friction drive roller.
According to an embodiment of the invention, the free extremity of the routing device includes fingers parallel to the supporting plane, whose distal extremities are retractable into corresponding recesses provided in the guiding plate.
The foregoing and other objects, features, aspects and advantages of the invention will become apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.
FIGS. 1A and 1B are top cr
REFERENCES:
patent: 3539179 (1970-11-01), Bergman
patent: 4496145 (1985-01-01), Fukui
patent: 4852868 (1989-08-01), Fukui et al.
patent: 4982942 (1991-01-01), Konishi et al.
patent: 5083765 (1992-01-01), Kringel
patent: 5244191 (1993-09-01), Kanekura
patent: 5316284 (1994-05-01), Bolognese et al.
Dubois Eric
Nicolet Andre
Monetel S.A.
Skaggs H. Grant
LandOfFree
Method for disassembling sheets of paper does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for disassembling sheets of paper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for disassembling sheets of paper will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1700370