The mechanism of the automatic warp knitting machine is relatively complex, so the movements of each mechanism must be closely coordinated to work properly. The process of knotting is as follows: the tension plate is pressed against the warp layer, the yarn picking needle picks out one warp yarn from each of the upper and lower layers, hands it over to the yarn pushing fork, and then sends it to the knotting area. The front yarn gathering pliers hold the warp yarn and determine the position of the front end of the warp yarn The yarn compactor presses the warp yarn, while the rear yarn gripper also holds the warp yarn to determine the position of the rear end of the warp yarn
The yarn gripper rotates and elongates the yarn, and the front yarn gathering pliers gradually open, causing the scissors to cut the front warp yarn. The yarn gripper wraps the warp yarn around the neck of the knotting tube (the first rotation of the yarn gripper); The tightening needle extends from the knotting tube, and when the yarn gripper rotates downwards again (the second rotation), the warp yarn is handed over to the tightening needle. Then, the tightening needle retracts, clamps the tail of the yarn, and the untwisting needle begins to move. Only the yarn gripper continues to rotate (the third rotation), and the untwisting needle extends and takes off the yarn Take the warp yarn and tighten the knot head, thus completing a knot tying cycle.
There are two main types of warp knitting machines: the main machine is fixed and the yarn frame moves, and the main machine moves and the yarn frame is fixed. Regardless of the method, its main mechanisms include transmission system, advancing mechanism, yarn splitting mechanism, slicing mechanism, weaving mechanism, threading mechanism, yarn uniformity device, and insertion box mechanism.