Papers by Author: Jing Jing Sun

Abstract: Through collocating colorized yarns and patterning weaving, a variety patterns of tufting carpet are realized. Patterning system is the core in tufting carpet machine; its performance determines the whole machine’s performance and weaving quality. In this paper, the patterning principle of single electronic-roller such as electromagnetic clutch type, servo motor type and step motor type, and the mulriple patterning principle such as two types or more than two types Electronic-Roller, was researched, the corresponding patterning mechanisms was designed, the approach realizing various patterning ways in mulriple patterning was exposited. The patterning principle exposited in this paper solves the general problem in designing patterning mechanism. The patterning systems developped on this principle have been applied in a variety of tufting carpet machines, and a variety of high precision carpet products have been woven.

Abstract: During weaving tufting carpet, the improper stop position of tufting machine will result in stop mark, which influences the carpet quality. In this thesis, through theory analysis and experiment research, the influence rule on the stop position of tufting machine to loop yarn tension and to loop-height has been obtained, and a method of eliminating stop mark by stopping machine in high has been put forward. The technology experiment has proved that when it overlaps partly with high position signal, a fixed position of stopping tufting machine in high has been realized by sending out stop instruction and stopping the tufting machine by a brake cylinder, and the best result of eliminating stop mark has achieved.

Abstract: The tension of warp and weft run through the whole weaving process in knitted carpet weaving equipment. The performance of delivering warp mechanism and guiding weft mechanism in this kind of equipment influences the quality of carpet directly. A self-adjusting delivering warp mechanism is designed in this thesis, which is used in knitted carpet weaving equipment or other textile equipment that delivers warp by warp-spindle and demands even warp tension. The self-adjusting delivering warp mechanism consists of the device for setting and detecting warp tension, the device for driving warp-spindle in different speed, and the device for transmitting warp-spindle movement. The device for setting and detecting warp tension can determine initialization tension of warp, according to the technical requirements, can detect and feed back warp tension in real time. The device for driving warp-spindle in different speed makes the rotating speed of warp-spindle change according to the warp tension. The self-adjusting delivering warp mechanism realizes the function on controlling the rotating speed of warp-spindle in closed loop, and on stabilizing delivering warp tension.