Sheet-material associating – Associating or disassociating – Signature associating
Patent
1987-05-29
1990-06-26
Garrett, Robert E.
Sheet-material associating
Associating or disassociating
Signature associating
270 58, 270 59, B65H 4302
Patent
active
049365622
ABSTRACT:
A method and apparatus are disclosed for establishing a random fault limit for hoppers in a collating machine. A plurality of hoppers are arranged in an array, each adapted to feed signatures, one at a time, to a conveyor. A miss feed base number and a double feed base number is established in a microcomputer for each of the hoppers equal to either (i) a predetermined number of signature feeds by that hopper, (ii) a predetermined number of books assembled, or (iii) a predetermined number of collator machine cycles. A miss feed fault number and a double feed number is established in the microcomputer for each of the hoppers. Each hopper has an associated miss feed detector and a double feed detector electrically connected to the microcomputer. The microcomputer (i) monitors each of the detectors, (ii) counts the number of miss feeds or double feeds for each hopper, (iii) compares the number of miss feeds and double feeds for each hopper against its associated base number, (iv) determines whether the number of detected miss feeds or double feeds exceed their associated base number, and (v) warns an operator if it is determined that the detected number of miss feeds or double feeds does exceed their respective established base number for any of the hoppers.
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AM International Incorporated
Garrett Robert E.
Newholm Therese M.
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