Stitch density adjusting device of circular knitting machine
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United States of America Patent
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-
Feb 22, 1994
Grant Date -
N/A
app pub date -
Nov 20, 1992
filing date -
Nov 21, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a stitch density adjusting device of a circular knitting machine for knitting stockings, panty hose, tights and so on, a needle cylinder is moved up and down for adjusting the density of the stitches being formed. In order to move the needle cylinder up and down, a knitting control unit having a knitting program set therein supplies a control signal to a reversible pulse motor which causes the needle cylinder to move through a movement transmission mechanism. The temperature rise in the knitting head due to friction is detected by sensor in the head and compared with a set value in a comparator which delivers a temperature difference signal to the knitting control unit. The control unit operates to compensate for the temperature rise by controlling the pulse motor.
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