Wire defect detector for a wire handling machine

Details Wire defect detector for a wire handling machine Wire defect detector for a wire handling machine

1995-11-22

1998-06-09

Larson, Lowell A.

Metal deforming

With randomly-actuated stopping

Responsive to condition of work or product

192125A, 226 11, B21C 5100

Patent

active

057619387

ABSTRACT:
A wire defect detection apparatus (70) is disclosed for use in a machine (10) that process wire (48) during the course of a sequence of manufacturing operations. The defect detector (70) includes a pair of rollers (80, 86), one being a follower roller (86), between which the wire is passed. The follower roller (86) is journaled for rotation on one end (88) of a pivoting arm (72), the other end (104) of the arm having an accelerometer (100) attached thereto. During operation of the machine (10), the accelerometer (100) produces a signal (118) that is received by a detection circuit (108). If the signal (118) is above or below predefined limits, indicating a defect in the wire (48), another signal (120) is sent to the controller (114) of the machine to either stop the machine or to execute some other change in the sequence of operations of the machine. Otherwise the machine (10) is permitted to continue operating uninterrupted. Additionally, a continuity test is performed between the pair of rollers (80, 86) so that wire run out or a bare wire splice (134) will result in electrical continuity between the two rollers (80, 86) which causes the detector circuit (108) to send a signal (120) to the controller (114) of the machine to either stop the machine or to execute some other change in the sequence of operations of the machine.

REFERENCES:
patent: 3264740 (1966-08-01), Veale
patent: 3268709 (1966-08-01), Olds
patent: 4797662 (1989-01-01), Graham et al.
patent: 5244067 (1993-09-01), Skotek et al.
"Sensor Corporation", Scottsdale, PA, Apr. 1992, AutoNull Cable Splice and Weld Detector Model No. 80358.

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