B - Operations – Transporting – 26 – F
Patent
B - Operations, Transporting
26
F
164/89
B26F 1/40 (2006.01) B21D 43/02 (2006.01) B26D 5/32 (2006.01)
Patent
CA 1267358
APPARATUS FOR AUTOMATIC COIL FEED ABSTRACT OF THE INVENTION Apparatus for automatic coil feed of a sheet metal stock strip in progressive dies for punch press die operations which adjust the length of stock strip being intermittently fed to the punch press die while the press is operating. The apparatus comprises feed apparatus for feeding a predetermined length of stock strip to the punch press die which feed apparatus normally operates at a preset feed length. There is a control for maintaining the correct feed length of the stock strip being intermittently fed into the punch press die and includes a correction arrangement operable to momentarily change the preset feed length to supply a correcting length of stock strip to the punch press die. There are two longitudinal arrays of registration openings in the stock strip. A first probe mechanism operable when the stock strip stops to detect non-registration of a registration opening in one array resulting from overfeed of the stock strip and a second probe mechanism operable when the stock strip stops to detect non-registration of an opening in the other array resulting from underfeed of the stock strip. Upon detection of underfeed or overfeed of the stock strip, switches activate the control mechanism to shorten the length of stock strip fed to the punch press die or lengthen the length of stock strip fed to the punch press die as the detection case may be while the press is in an operating mode.
518560
Arnold Jerold W.
Company General Electric
Eckersley Raymond A.
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