Sheet feeding or delivering – Feeding – Multiple supplies
Patent
1989-09-01
1994-03-15
Skaggs, H. Grant
Sheet feeding or delivering
Feeding
Multiple supplies
271 12, 271 5, 271 6, 378172, 378173, B65H 344
Patent
active
052941019
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a device for automatically loading a sheet film into a sheet-film cassette, said device comprising a plurality of supply magazines of different sizes arranged horizontally one above the other, a cassette-loading station arranged below the supply magazines and a sheet-film removal device associated with the sheet removal sides of the supply magazines.
In a device of this type disclosed in U.S. Pat. No. 3,150,263, supply magazines of different sizes are arranged in a horizontal position one above the other such that their removal sides are positioned vertically above each other. The sheet films removed from a supply magazine drop into vertically arranged guide channels and down into a cassette-loading station. In the case of that device, the sheet films are subjected to high falling speeds on their way towards the cassette-loading station so that undesired pressure marks can occur as a result of impact forces or the like. Moreover, considerable space is required in the area of the supply magazines because the smaller supply magazines need the same space as the larger supply magazines.
It is the object of the invention to design a device of the generic type such that in addition to the film being handled carefully and reliably, a compact space-saving shape of the apparatus is obtained.
In accordance with the invention this object is attained in that the removal sides of the supply magazines are staggered such that the largest supply magazine is arranged at the top and each following, smaller supply magazine is staggered backwardly below, in that an endless conveyor belt is positioned opposite to the removal sides of the supply magazines, said belt being in an inclined position corresponding to their staggered arrangement and extending down to the cassette-loading station and in that sheet-film guide means and/or the sheet-film removal device are arranged between the removal sides of the supply magazines and the conveyor belt.
According to an advantageous modification of the invention the conveyor belt is provided with projections which are arranged in the direction of movement thereof at a distance corresponding to at least the smallest sheet-film size to be handled.
According to another useful modification of the invention each supply magazine is associated with a sheet-film removal device and guide means which transfer a removed sheet film to the conveyor belt.
According to still another useful modification of the invention the conveyor belt is designed as a suction belt.
The device according to the invention allows in an advantageous way the sheet film to be moved in a damage-preventing manner on its way from the supply magazine to the cassette so that pressure marks caused by impact or other damage to the film caused by increased friction are avoided.
Further features and advantages can be inferred from the description of an embodiment of the invention illustrated in the drawing and from the subclaims. The drawing shows schematically a lateral sectional view of the device.
The single figure shows a device 1 for loading and unloading cassettes 14 for X-ray sheet film, said device being arranged on a work table not illustrated.
The device comprises a plurality of supply magazines 2 which are arranged horizontally one above the other and are of different sizes for different sheet-film formats and are each mounted to a pair of ledges 4.
The supply magazines 2 arranged closely side by side are provided with sliding covers 2a which are opened for sheet removal by an opening device not illustrated which is for example operated electromagnetically or pneumatically.
A plurality of sheet films of equal size is arranged in each supply magazine 2.
During their introduction into the device 1, the supply magazines 2 are moved up to an end-side abutment not illustrated in detail and are fixed in this position by a rear locking step 5.
Each of the supply magazines 2 is associated with a code not illustrated which indicates the size of the sheet film loaded and transmits the relevant data to a con
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Eastman Kodak Company
Schmidt Dana M.
Skaggs H. Grant
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