Let -off systems fall into one of three major categories. The simplest let- off system is known as negative let- off. This system merely consists of a brake continually applied to the warp beam to retard the motion of the beam.
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- 送經(jīng)系統有三種,最簡(jiǎn)單的是消極式送經(jīng)機構,該機構僅僅是靠一個(gè)制動(dòng)機構連續地給織軸施加制動(dòng)作用以阻止織軸的轉動(dòng)。
