CUS­TOM­IZED SEWING AUTOMATS – II

Stitch World - - NEWS -

Au­toma­tion in essence re­duces the flex­i­bil­ity (gen­er­al­ity) of any op­er­a­tion and in­creases stan­dard­iza­tion. The pos­si­ble au­toma­tions for op­er­a­tions in com­mod­ity gar­ments are al­ready done, com­mer­cial­ized, copied and now af­ford­able to many. How­ever, the ever-chang­ing style and de­vel­op­ment of in­no­va­tive raw ma­te­rial poses chal­lenge to off-the-self automats. There­fore, stan­dard automats of­fered by many sewing ma­chine man­u­fac­tur­ing com­pa­nies are of­ten not ap­pro­pri­ate for a par­tic­u­lar op­er­a­tion. Thus, arose the need for cus­tom­ized automats. perime­ter. This is some­what sim­i­lar to the first op­tion of jig-tem­plate sewing, which how­ever also re­quires man­ual load­ing of tem­plate and in­ser­tion and with­drawal of the part from the tem­plate. Since the work­piece used in this type of sewing is small, it was de­cided to use a SCARA ro­bot for load­ing. The SCARA ro­bot with 1-nee­dle lock­stitch walk­ing foot ma­chine loads and sews an au­to­mo­bile head­rest around the to­tal cir­cum­fer­ence of the prod­uct. The fab­ric com­po­nents are pre-loaded into a set po­si­tion on the work sur­face of the sta­tion. The SCARA ro­bot po­si­tions the car­rier plate on top of the cut com­po­nents hold­ing the cut com­po­nents in align­ment and di­rects them into the nee­dle path of the sewing ma­chine. The ro­bot is then syn­chro­nized with the sewing head to move the cut com­po­nents through the sewing process of the cir­cum­fer­ence of the outer edge un­til the com­po­nents are joined to­gether with the 1-nee­dle

SCARA ro­bot per­form­ing sewing op­er­a­tion around the cir­cum­fer­ence of the prod­uct

Dr. Pra­bir Jana, Pro­fes­sor, NIFT, Delhi

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