What are the breaking characteristics of the latch needle of the opener?

    In the high-speed opener, the phenomenon of latch needle breakage affects the weaving quality of the fabric. In the knitting process, the cause of the latch needle breakage is the continuous impact of the latch needle and the triangle valve, and the latch needle and the needle shaft. What are the reasons for this? The main sources of its impact are as follows: 　　                             Latch needle break characteristics of opener: 　　(1) When the latch needle touches the curved line triangle, the curved line triangle will hit the latch needle; 　　(2) When the latch needle is in contact with the triangle of the needle guard, the triangle of the needle guard will also hit the latch needle. The impact force of the bent triangle on the knitting needle lasts for about 250 microseconds, so the impact force is relatively gentle.

　　 Since the impact duration of the curved triangle has a large relationship with the basic natural frequency of the needle, no longitudinal wave will be formed in the needle. However, the triangular impact dolphin shape of the needle guard is obvious, and the impact force reaches its peak in about 5 to 10 microseconds. Therefore, when the triangle of the needle guard is hit, the voltage wave will quickly spread to the entire needle tongue. At this time, the rapid deceleration of the latch needle will cause bending vibration of the hook. At the same time, the impact of the needle tongue will aggravate the bending and pulling of the hook due to waves.