Sheet feeding or delivering – Feeding – Separators
Patent
1993-12-20
1995-08-15
Skaggs, H. Grant
Sheet feeding or delivering
Feeding
Separators
271122, 271125, 271273, B65H 304
Patent
active
054412536
DESCRIPTION:
BRIEF SUMMARY
FIELD OF TECHNOLOGY
This invention relates to a paper sheet conveying apparatus for conveying inserted paper sheets one by one after separating them from one another.
BACKGROUND TECHNOLOGY
A paper sheet conveying apparatus is currently known which is equipped with a separating means including a conveyer belt, a drive roller rotating in one direction at all times, and two separator roller disposed between the drive roller and the conveyer belt so as to come into engagement with one of the drive roller and the conveyer belt exclusively with a predetermined gap from the other. However, this conventional apparatus was not equipped with any means for easily setting the predetermined gap externally. Further, as shown in FIGS. 3 and 5, the two separator rollers include a pair of rollers 2, 3 individually rotatably mounted on a common axis 1 in association with a pair of laterally spaced conveyer belts A, B, and the rollers 2, 3 have not only their inner sides 2b, 3b but also their outer sides 2a, 3a engageable with the drive roller 4.
The predetermined gap is generally very small and is usually defined to be larger than the thickness of a single paper sheet and smaller than the total thickness of two paper sheets. In the absence of any means for externally adjusting such a very small gap, the separating ability would be reduced so that when an accident, such as double-sheet conveying, occurs, an adequate action cannot be achieved quickly.
Given that the two separator rollers 2, 3 are rotatable independently from one another and that the outer contact wheels 2a, 3a engageable with the drive roller 4 are added to convey the entire width of a paper sheet, if a paper sheet M with a folded corner e as shown in FIG. 4 is inserted, one separator roller 2 will come into contact with the drive roller 4 to rotate so as to push the paper sheet back to the upstream side U as shown in FIG. 5 while the other separator roller 3 will not come into contact with the drive roller 4 so it will continue rotating so as to move the paper sheet toward the downstream side D. This causes the paper sheet M to skew and, if the worst happens, to become jammed.
DISCLOSURE OF THE INVENTION
With the foregoing problems of the conventional art in mind, it is an object of this invention to provide a paper sheet conveying apparatus in which a predetermined gap between a conveyer belt and a separator roller and between the latter and a drive roller can be adjusted and which does not cause skew or jamming.
According to an aspect of this invention, the above object can be accomplished by a paper sheet conveying apparatus equipped with paper sheet separating means including a conveyer belt movable in a paper sheet delivering direction, a drive rollers rotating in one direction at all times, and two separator rollers disposed between the drive roller and the conveyer belt so as to come into contact with one of the drive roller and the conveyer belt exclusively with a predetermined gap from the other so that a paper sheet on the conveyer belt is moved back toward the upstream side when the separator roller comes into contact with the drive roller, wherein the drive roller is supported by a pivotable support arm operatively connected with setting means for setting the predetermined gap.
The setting means may be, for example, a setting cam plate engaging the support arm for pivotally moving the support arm. This setting cam plate may have a series of markings for reading the value of the setting.
The conveyer belt may be a double structure including a pair of parallel spaced conveyer belts, and the separator roller may be a double structure including a pair of axially spaced separator rollers in association with the pair of parallel spaced conveyer belts. The pair of axially spaced separator rollers may have on their confronting inner sides a pair of contact wheels for contacting the drive roller.
Paper sheets inserted into the apparatus are conveyed to the downstream side by the conveyer belt. If the paper sheets are inserted one by one between the
REFERENCES:
patent: 3108801 (1963-10-01), Van Dalen
patent: 3272500 (1966-09-01), Van Dalen et al.
patent: 4416449 (1983-11-01), McInerny
patent: 4526358 (1985-07-01), Ura et al.
Aoyama Moriyuki
Kadomatsu Hideyuki
Kawashima Kazunari
Nakamura Takaharu
Takemoto Takatoshi
Kabushiki Kaisha Ace Denken
Skaggs H. Grant
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