Sheet feeding or delivering – Feeding – Separator and conveyor
Patent
1989-11-16
1991-09-03
Skaggs, H. Grant
Sheet feeding or delivering
Feeding
Separator and conveyor
378181, 378182, 271107, 271 9, 271264, 271272, B65H 508
Patent
active
050446215
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention relates to a device for loading a sheet film into a sheet-film cassette, said device comprising a plurality of sheet-film supply magazines and a sheet-film transfer device movable between a selected supply magazine and a cassette-loading station, further comprising a sheet-film holder which has a guide channel for receiving a sheet film and also comprising a sheet-engaging device movable along the guide channel of the sheet-film holder, said sheet-film holder and sheet-engaging device forming a jointly movable unit, according to German patent application P 37 05 851 .7, filed Feb. 24, 1987; International (PcT) publication no. WO 88/06749 published Sept. 7, 1988. The holder has a plurality of rotatably mounted rollers which define the position of the sheet in the holder.
BACKGROUND ART
In the case of the device according to the above reference Pct publication, it may happen that the sheet film removed from a supply magazine by a sheet-gripping device and moved into a sheet-film holder to be transported to a cassette-loading station abuts the walls of the sheet-film holder or slides along said holder. Due to the mechanical force which is thus exerted on the sheet film, the film may be damaged or impaired by pressure marks and/or other defects caused by increased frictional contact with the metal-sheet film holders. Of possible pertinence are Auslegeschrift 1810257 and 1943660.
DISCLOSURE OF THE INVENTION
The sheet-film holder of the present invention handles the film reliably and protected from damage, due to the use of rotatably mounted rollers to define the film guide channel in the holder. The rollers are preferably arranged at those locations of an arcuate guide channel at which the front edge of a sheet film fed into the sheet-film holder has to be deflected.
Further in accordance with a preferred embodiment, the support of the rollers consists of two identically shaped mounting sections arranged at a distance from, and parallel to each other, with the sheet engaging device being arranged between said sections. Preferably the support of the rollers and the sheet engaging device is mounted to a rectilinearly guided guide member on which the sheet engaging device is mounted for pivotal movement concentrically with the guide channel defined by the rollers.
Due to the particular design of the sheet-film holder with a guide channel defined by the rollers, the sheet film is guided reliably and smoothly so that it cannot be interfered with in any undesired manner.
BRIEF DESCRIPTION OF THE DRAWINGS
Further features and advantages can be inferred from the description of embodiments of the invention illustrated in the drawings and from the subclaims. In the drawings,
FIG. 1 is a lateral sectional view of the device;
FIG. 2 is an inclined partial view of the device according to FIG. 1;
FIG. 3 is a lateral view of another embodiment of a sheet-film holder; and
FIG. 4 is a front view of the device according to FIG. 3.
MODES OF CARRYING OUT THE INVENTION
The subject matter of the invention relates to the special design of a sheet-film holder 12 in a device 1 for unloading and reloading X-ray film cassettes according to the above referenced Pct publication.
The device comprises a light-tight housing 1 in which a plurality of supply magazines 3 are arranged one above the other. Each of the supply magazines 3 houses a different film size.
Above the supply magazines 3, a light-tight cassette unloading and reloading station 4 is arranged in which a cassette 2 is positioned such that it can be introduced and removed on a transport belt 5. Opening means for operating the upper cassette portion 2a, which are of a known type and not illustrated, are arranged in the unloading and reloading station 4.
A suction arm 18 movable by a crank drive 16, 17 is located beside the unloading and reloading station 4 and serves to remove a sheet film from cassette 2 and transfer said sheet film to the transport rollers 19. The transport rollers 19 and transport rollers 20 connected to them serve to
REFERENCES:
patent: 1599696 (1926-09-01), Wartz
patent: 3363816 (1968-01-01), Maddock
patent: 3582063 (1971-07-01), Gnage
patent: 4009877 (1977-03-01), Ward
patent: 4150297 (1979-04-01), Borggten
patent: 4887060 (1989-12-01), Kaneko
patent: 4901996 (1990-02-01), Schlough
Sachs Guenter
Wuerschum Hans-Peter
Childress G. Herman
Eastman Kodak Company
Skaggs H. Grant
LandOfFree
Automatic film-loading device for sheet-film cassettes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic film-loading device for sheet-film cassettes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic film-loading device for sheet-film cassettes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1002823