Working principle of warp knitting machine


One or more sets of yarns arranged in parallel are fed […]

One or more sets of yarns arranged in parallel are fed to all the working needles of the machine in the warp direction and looped to form a knitted fabric. This method is called warp knitting, and the fabric is called warp knit. A machine that completes this warp knitting is called a warp knitting machine.

The main loop forming parts of the warp knitting machine are knitting needles, yarn guiding needles, sinkers and pressure plates (for crochet machines). The needles are placed on the needle bed in a row and move along with the needle bed. The yarn guide needle is mounted on the strip to form a bar. The warp yarn passes through the eyelet of the yarn guiding needle, moves around the bar with the bar, and is woven into the fabric by the mutual cooperation movement of the knitting machine, the sinker and the like. The warp knitting machine is mainly composed of a weaving mechanism, a bar traverse mechanism, a let-off mechanism, a pulling take-up mechanism and a transmission mechanism.

The weaving mechanism comprises a needle bed, a bar, a sinker bed and a pressure plate, generally driven by a cam or an eccentric link. Cams are often used in warp knitting machines with lower speeds and more complex motion laws. The eccentric connecting rod is widely used in high-speed warp knitting machines because of its smooth transmission, simple processing, and low wear and noise during high-speed operation.