A simple system for the online detection of skip/loop stitches in single needle lockstitch sewing machines

• Autorzy: Wesley D. S. , Poojitha V.
• Języki publikacji: EN

Abstrakty

EN

In single needle lockstitch sewing machines, the needle thread consumption of 10 normal stitches for a fabric with a particular number of layers at a particular stitches per unit length is manually measured kept as a reference value. If the value of needle thread consumed per stitch is very small, the length of thread consumed per 10 stitches is used as a comparing value. The actual thread consumed for every 10 stitches is measured online by a rotary optical encoder sensor by converting the angular movement into the linear movement of the thread and continually compared with the reference value. If the online measured length is more or less a buzzer sounds to indicate the variation. The counting of every stitch formed is undertaken by a proximity sensor by sensing the protrusion in the hand wheel of the machine, which rotates once for every rotation.

Słowa kluczowe

EN

skip stitch; loop stitch; online; sewing; quality; thread consumption; rotary optical encoder

PL

ścieg; szycie; jakość; zużycie nici

• Wydawca: Lodz University of Technology, Faculty of Material Technologies and Textile Design
• Czasopismo: Autex Research Journal
• Rocznik: 2010
• Tom: Vol. 10, no. 3
• Strony: 69--72
• Opis fizyczny: Bibliogr. 4 poz., il.

Twórcy

autor

Wesley D. S.

• Department of Fashion Technology (Apparel Production), National Institute of Fashion Technology, Rajiv Gandhi Salai, Taramani, Chennai-600113, India

autor

Poojitha V.

• Department of Fashion Technology (Apparel Production), National Institute of Fashion Technology, Rajiv Gandhi Salai, Taramani, Chennai-600113, India

Bibliografia

• 1. H. Carvalho, A. Rocha, J. L. Monteiro, L. F. Silva et al. (2004), “An innovative device for bobbin thread consumption measurement on industrial sewing machines”, IEEE International Conference on industrial Technology, pp. 1034-1039.
• 2. M. Jaouadi, S. Msahli, A. Babay, Zitouni et al. (2006), “Analysis of the modeling methodologies for predicting the sewing thread consumption”, International Journal of Clothing Science and Technology, Emerald Group, Vol. 18 No. 1, pp 7-18.
• 3. Pfaff machine online catalogue of model 3715-www.mimind.com/pdf/pfaff3715.pdf.
• 4. T. G. Clapp, L. H. Olson, K. J. Titus, L. Dorrity et al. (1996), “The online inspection of sewn seams”, National Textile Centre Annual Report, November, pp 173-182.