Design of an automatic parallel type jute bag making machine

Abstract

An attempt has been made to design a jute bag making machine in which all operations, like fabric cutting, hemming, mid-folding and herackle stitching, are carried out automatically in a single setup to produce parallel type jute bags of industrial standards. The salient design features of indigenously developed first prototype of an automatic jute bag making machine have been described. The proposed machine comprises four major units, like fabric cutting and conveying unit, simultaneous mouth edge folding and stitching unit, mid folding and material guidance unit, and simultaneous parallel side stitching unit. The motor drives, sensors and actuators are synchronized and automated by programmable logic controller. The proposed machine can produce bags of uniform quality with mouth edge folded, hemmed and parallel side stitched in one single integrated setup at higher productivity compared to present manual system.