Design And Analysis Of Picking And Checking Mechanism For Shuttle Loom

Abstract

Shuttle loom is one of the oldest machine for weaving of cloth, and is the vital machinery for power loom industry in India. With this basic loom it is possible to weave nearly all type of cloths very efficiently. This ancient machine is still used by many weavers in India, so they face many problems because of high power consumption and more losses of energy, than any other machinery for this industry. To improve the production rate of this machine, many changes can be done with respect to mechanical or textile aspects to achieve minimum power consumption. To improve the production rate, it is mandatory to increase the speed of picking mechanism, which plays main role in weaving of the fabric. Various researchers have contribute for this work. To obtain minimum power consumption, detailed analysis of another auxiliary mechanism called checking, which is also related to picking mechanism, is required. The mechanism operates by applying brakes to the shuttle, which is at very high speed, and prepare the shuttle for next cycle of picking mechanism. It uses spring loaded swells to retard the shuttle. Due to retardation, velocity of shuttle decrease to zero. If these brakes are not released then picking mechanism needs to generate more power to strike picker on the shuttle. Hence it is extremely necessary to design and develop a mechanism to compliment the checking mechanism and to move in the direction of achieving minimum power consumption. Detailed study is done on the working of checking mechanism of the present loom. The aim of this project is to develop a checking mechanism which releases the spring loaded swell at the time of initialization of picking mechanism and load that spring to brake the shuttle when picking mechanism ends. The kinematic and dynamic analysis is performed for the newly developed mechanism. Dynamic simulations is carried out for the mechanism using commercial simulation package creo 2.0 and the results are validated by theoretical calculations.