초록 ▼

The invention relates to a process for automatically controlling the shape of sheet metal produced in a rolling mill, and to apparatus for carrying out the process. The shape of the sheet is sensed by a shapemeter, and each segment of the shapemeter provides an output indicative of the shape of the

The invention relates to a process for automatically controlling the shape of sheet metal produced in a rolling mill, and to apparatus for carrying out the process. The shape of the sheet is sensed by a shapemeter, and each segment of the shapemeter provides an output indicative of the shape of the portion of the sheet passing over that segment. In accordance with the invention, the outputs are converted to electrical signal levels, such as current or voltage levels, and certain ones of the signal levels are averaged, and the averages are compared either with certain other signal levels, or with certain other averages. If the comparisons yield a difference greater than predetermined tolerance levels, control signals are generated to control parameters of the rolling mill.

대표청구항 ▼

Apparatus for controlling the shape of sheet metal produced in a rolling mill, said apparatus receiving a plurality of output signals from a sensor disposed across the width of said metal sheet, said sensor having a plurality of individual sensing means disposed at different locations across said wi

Apparatus for controlling the shape of sheet metal produced in a rolling mill, said apparatus receiving a plurality of output signals from a sensor disposed across the width of said metal sheet, said sensor having a plurality of individual sensing means disposed at different locations across said width, a different one of said plurality of signals being associated with a different one of said individual sending means; said apparatus comprising: averaging means; predetermined ones of said plurality of signals being fed to said averaging means, whereby the average of said predetermined ones of said plurality of signals is produced at the output of said averaging means; first comparator means; the output of said averaging means being fed to one input terminal of said first comparator means; predetermined other ones of said plurality of signals or other averages being fed to the other input terminal of said first comparator means; the output of said first comparator means being fed to means for controlling a parameter of said rolling mill; whereby, when said first comparator means detects a difference, greater than a predetermined difference, between the inputs thereof, said parameter will be appropriately controlled; said sensor comprising a shapemeter having a plurality of segments, a different one of said segments of said shapemeter being associated with a different one of said plurality of signals; said plurality of signals comprising electrical signal levels; said averaging means comprising electronic averaging means; said first comparator means comprising electronic comparator means; said averaging means comprising two averagers; the signals from the segments on the right hand side of the sheet being fed to one of said averagers; the signals from the segments on the left hand side of the sheet being fed to the other averager; the output of said one averager being fed to one input terminal of said first comparator means; the output of said other averager being fed to another input terminal of said first comparator means; the output of said first comparator means being fed to a roll level controller; whereby when the inputs to the first comparator means comprises a difference of or greater than a predetermined amount, the level controller will control the roll level means to operate to eliminate the difference.