... Jacquard warp knitting machine, Crochet machine and Seamless underwear machine with JL,RJPC,RSJ,RJWB,RDPJ,DJ,MRPJ/MREPJ etc. , ... the old mechanical jacquard, electromagnetic Jacquard machines. Principle:Piezo element are used on the knitting machines for the displacement of ... 200V is set alternatingly on each side of the piezo element with switching. The piezo ceramics deforms itself and displace the ...