Method and apparatus for rupturing sliver during coiler can replacement

A sliver coiling apparatus comprising

• (a) a rotatably supported coiler head including a sliver discharge opening travelling in a circular path upon rotation of the coiler head;
• (b) a first driving means for rotating said coiler head;
• (c) support means for positioning a coiler can underneath said coiler head such that a central axis of said coiler can is eccentric relative to said circular path;
• said coiler can receiving sliver from said sliver discharge opening;
• (d) a second driving means for moving said support means for removing a full coiler can from under the coiler head and positioning an empty coiler can thereunder;
• (e) a position sensing means for emitting a signal when said sliver discharge opening is situated on an inner half circle of said circular path;
• said inner half circle being oriented towards a central axis of the coiler can undergoing filling from said sliver discharge opening;
• (f) means for applying said signal to said second driving means for energizing said second driving means to displace said support means when said sliver discharge opening is situated on said inner half circle for effecting rupture of the sliver.

A sliver coiling apparatus comprising

• (a) a rotatably supported coiler head including a sliver discharge opening travelling in a circular path upon rotation of the coiler head;
• (b) a first driving means for rotating said coiler head;
• (c) support means for positioning a coiler can underneath said coiler head such that a central axis of said coiler can is eccentric relative to said circular path;
• said coiler can receiving sliver from said sliver discharge opening;
• (d) a second driving means for moving said support means for removing a full coiler can from under the coiler head and positioning an empty coiler can thereunder;
• (e) a fill sensor means for emitting a signal in response to a predetermined filled state of the coiler can undergoing sliver filling;
• and
• (f) means for applying said signal to said first driving means for reducing the velocity of sliver delivery from said sliver discharge opening and means for applying a further signal from said first driving means to said second driving means for energizing said second driving means to displace said support means.