Electronically controlled circular knitting machine
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United States of America Patent
Stats
-
May 13, 1986
Grant Date -
N/A
app pub date -
Jun 4, 1984
filing date -
Jun 15, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
To transfer electric control signals between a stationary portion and rotary portion of a machine, in particular a circular knitting machine, a device is disclosed which comprises two optical fiber cables respectively attached, the one to the stationary portion and the other to the rotary portion, and arranged to axially face each other on the rotation axis of the machine rotary portion such that the light flux can be transferred from one fiber to the other. An electro-optical element converts the electric signals, which may be of the digital type, into optical signals, which are applied to one of the optical fiber cables and then received on the other cable through a coupling for free relative coaxial rotation. The signals are again converted into electric signals through an opto-electric element, and then processed to control machine actuators. The transfer arrangement is free of any sliding electric contacts and unaffected by noise and interference.
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