Wire rod rolling mill

A Wire rolling mill comprising:

• a plurality of roughing stands;
• a cropping shears;
• a finishing block;
• a coiler with a coiler pipe and a coiler drive comprising a coiler motor and a coiler gear unit;
• a delivery conveyor for said wire which has been completely rolled into coils, said roughing stands, said cropping shears, said finishing block, said coiler and said delivery conveyor;
• a controller having a computer controlling said shearing unit defined in a predetermined rolling program by a computer shear command, said shearing unit cutting away a cropped length defined in said computer shear command from the leading end of a rolled wire rod workpiece prior to feeding said wire strand into said finishing block, and thereby producing a wire head of said wire deposited in a coil and said, cropped length being correlated with the coiler pipe position;
• a rotation angle position transmitter for said coiler operating with a plurality of pulses, which is connected with said controller whose angular position corresponds to said coiler pipe position so that said controller combines said computer shear command and said digital pulses of a predetermined coiler pipe position sector by an electronic AND-circuit for a shear positioning command and said cropping shears responds to said shear positioning command, said rotation angle position transmitter being mounted on a shaft of said coiler drive with an adaptor gear unit intervening and said adaptor gear unit reproducing the positions of said rotation angle position transmitter and said coiler pipe, including a null position, a definite null pulse and 360 equal-spaced pulses for each complete rotation being obtainable from said rotation angle position transmitter;
• and
• a counter positioned between said rotation angle position transmitter and said electronic AND-circuit equipped with a preselecting device with which the presettable coiler pipe position sector and sector width are adjustable.