Pattern Mechanism of Tricot Warp Knitting Machine

Experiment Name: Study on pattern mechanism of Tricot warp knitting machine.

The warp knitting machine is a knitting m/c where the loops are formed in course wise direction and the fabric produced is in open width form. In Tricot warp knitting m/c compound needles are used. The warp yarns are feed to the needles through guide bars using shogging and swinging motion which is done by patterning drum and chain links with a mechanism called patterning mechanism.

M/C specification:
  1. Brand: LIBA
  2. Origin: W. Germany
  3. Manufacturing Company: MASCHINEN FABRIK, NAILA.
  4. Manufacturing Year: 1991
  5. Width: 84 inch/ 213 cm
  6. Type: COP 2K
  7. Gauge: 28
Patterning mechanism:
The shogging movement is initiated by varying the radius of the continuously turning pattern shaft either in the form of different heights of pattern links which poses over a pattern drum attached to the shaft or in the form of carefully shaped solid metal circular cams, termed pattern wheels, attached to it. An increase in height one link to the next produces a thrust against the end of the guide by shogging it positively into the m/c a decrease will produce a negative shog towards the pattern shaft as the result of the action of a return spring. A constant height will produce no shog if the guide bar will continued to swing through the same needle space. The periphery of the pattern wheel or chain track is scanned by a roller which is link by a flexible jointed push-rod to the end of the guide bar. The under side of the rod near the roller is supported on the side with moves freely or a metal surface as shogging occurs.

By this experiment I learned about the Tricot warp knitting m/c and their several parts with pattering mechanism and chain links. This is a modern m/c and so this experience will help me in my future practical life. 
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Mazharul Islam Kiron is a textile consultant and researcher on online business promotion. He is working with one European textile machinery company as a country agent. He is also a contributor of Wikipedia.

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