There are many types of carpet tufting looms, but they all have the same weaving principle. The carpet tufting machine uses the coordinated sequential movement of needles, loop-forming hooks and cutters to tuft the yarn on the base fabric E to form a carpet, Level Cut Loop (hereinafter referred to as LCL) tufting machine can produce flower-shaped patterns of the same height loop cut pile combination. The working principle of LCL looping movement is shown in Figure 1. The tufting needle moves up and down under the movement of the needle actuator, as shown in the arrow direction. The cutting knife moves down under the movement of the knife actuator. The reed, hook knife, auxiliary blade, and small air cylinder are composed of LCL jacquard assembly, which is installed on the hook actuator as a whole, and swings left and right with the movement of the actuator. When the small cylinder pushes the auxiliary blade forward to close the reed and the hook knife, the yarn forms a loop on the base fabric; when the auxiliary blade returns to recovery under the action of the spring, the reed and the hook knife open, the yarn After the thread is hooked by the hook knife, it is cut by the knife and becomes cut pile on the base fabric. Whether the yarn is looped or cut depends mainly on the position of the reed. The LCL flat-cut flat loop attachment is a unique loop-forming attachment of Cobble. The control principle is the same as that of the full-width control feeding and lifting attachment, and each hook can be controlled separately [31. In addition to the tufting needle, loop hook and cutter, the looping motion actuator of the LCL tufting machine also has a moving reed. Therefore, the loop-forming movement of the LCL tufting machine includes the timing movement of the tufting needle, the loop-forming hook and the timing movement of the reed, and the timing relationship between them is required to meet the loop-forming requirements.
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