Method and apparatus of controlling the positioning of corrugate

Details Method and apparatus of controlling the positioning of corrugate Method and apparatus of controlling the positioning of corrugate

1993-11-02

1996-06-18

Trammell, James P.

Boots, shoes, and leggings

36447435, G06F 1900, G05B 1918

Patent

active

055284876

ABSTRACT:
A method and apparatus is provided for effecting semi-closed loop positioning of a work piece, such as corrugated-board, which corrects for inherent tolerance errors in the apparatus. A controller operates a processing device, for example a slotter, a positioning device and a position measuring device. The processing device and the work piece are positioned relative each other to align the processing device with a target position on the work piece defined by a target position value. The measuring device is then used to determine the initial actual position value of the processing device relative to the work piece. A processing size is determined and tested to find whether the size is within a given tolerance. If the size is outside the tolerance, fine adjustments are made to reposition the work piece. Once the position of the processing device is within tolerance, the measuring device measures the position of the processing device to determine a corrected actual position value. The difference between the initial actual position value and the corrected actual position value is added to the target value to produce a new target position value for subsequent work piece processing.

REFERENCES:
patent: 3895358 (1975-07-01), Pearl
patent: 4114079 (1979-09-01), Miyakita
patent: 4776192 (1988-10-01), Oda et al.
patent: 4998206 (1991-03-01), Jones et al.
patent: 5172138 (1992-12-01), Okazawa et al.
patent: 5251142 (1993-10-01), Cramer

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