Modified tappet shedding mechanism for improved performance of jute loom: Part II—Performance analysis of the mechanism

Abstract

The performance of the modified shedding mechanism with grooved tappet, developed for weaving plain cloth, has been studied under the laboratory condition in pilot plant as well as under the actual product ion conditions in jute mills. Compared to the conventional tappet shedding mechanism, the modified system reduces appreciably the undue variation of warp tension during shedding and consequently the warp breakage rate to the extent of about 38%, which, in turn, reduces the average efficiency loss due to warp breaks by 2.4%. While the conventional shedding mechanism causes about 0.4% loss in weaving efficiency due to mechanical reasons, no such observation has been made for the modified system. The

modified shedding, however, consumes about 5.5% more electrical power than the conventional system because of its design , but the amount of power consumed by shedding is very small compared to the total power required by the running loom. The modified shedding mechanism has no adverse effects on the physical properties of the cloths produced and operates successfully without any mechanical or operational difficulty even at the mill level.