Sluzer Shuttleless Weaving Machine/ Working Of Projectile Mechanism

Sulzer Shuttleless Weaving Machine -

    In this weaving machine, the weft yarn   is introduced into the shed  by means of a gripper.A tuck -in selvadge  is formed by drawing the cut weft end into the shed by means of tucking needles. The pick is then beaten up by means of cam  operated reed.

     A torsion bar arrangement is used for propulsion of the gripper  through the open shed.The gripper while  travelling from left hand side to the right hand side is made up to follow a fixed path across the loom by means of a series of rake  guides which is elevated  into the shed before picking and again falls below the bottom shed line before beat up . The gripper on reaching the right hand side leaves the weft yarn ,falls down to conveyor underneath the sley and return back to the left hand side to follow to the  cycle of picking .At a time only one gripper is picked in the shed and  so gripper returns at much  slower speed than the weaving speed,many gripper  are in a circulation so that soon as one  pick is picked  another gripper should be ready for the next pick  (17 gripper is 130" width loom  and 13 in 85" loom;  size of each group is 3. 5" ×0. 5" × 0. 24"weighing  1.33ozs).

     After each pick, the weft  is cut  and tucked  with the next shed  at both  selvedges. It is possible to provide similar tucked in selvedges for the intermittent fabric also. For every pick  there will be double the density in the selvedges which which may be lead  the difficulties in processing. In order to overcome this, finer warp yarn for the selvedges  compared to the body warp end  is used.

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