Knot-tying mechanism

Details Knot-tying mechanism Knot-tying mechanism

1994-09-07

1995-12-26

Crowder, C. D.

Wireworking

Knotting

140115, 289 2, 289 181, B21F 1500

Patent

active

054778930

ABSTRACT:
Disclosed herein is a coil spring knotting machine comprising a frame, a support arm mounted on the frame for movement between a knot-tying position and a retracted position, a camshaft rotatably mounted on the frame about an axis fixed relative to the frame, a rocker-arm moveably mounted on the frame and operably connected to the camshaft and to the support arm for displacing the support arm between the knot-tying and retracted positions in response to rotation of the camshaft, a first servo motor rotatably drivingly connected to the camshaft to selectively effect rotation thereof, a knot-tying member rotatably mounted on the support arm, a second shaft rotatably mounted on the frame about a second axis fixed relative to the frame, a coupling drivingly connected to the second shaft and to the knot-tying member for rotating the knot-tying member in response to rotation of the second shaft, notwithstanding movement of the support arm between the knot-tying and retracted positions, a second servo motor drivingly connected to the second shaft to effect rotation thereof, and an electronic control unit connected to the first and second servo motors to cyclically rotate the camshaft so as to displace the support arm between the knot-tying and retracted positions and to cyclically rotate the second shaft so as to rotate the knot-tying member when the support arm is in the knot-tying position.

REFERENCES:
patent: 2166636 (1939-07-01), Marcus et al.
patent: 2333797 (1943-11-01), Kirchner
patent: 2759500 (1956-08-01), Nelson
patent: 2836205 (1958-05-01), Wonderlich
patent: 3043347 (1962-07-01), Piliero

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