Process and device for starting spinning on an open-end spinning apparatus

A spinning apparatus for drawing off a thread end from a fiber-collecting surface with fibers continuously tied thereinto, comprising:

• feed means for supplying a sliver;
• opening means for receiving said sliver and opening same into separated fibers;
• a fiber transport path along which flows said separated fibers, collectively defining a fiber stream;
• a fiber-collecting surface for collecting said opened fibers thereon to be subsequently drawn off as thread, said surface being associated with open-end spinning means
• feed channel means for providing passage of opened fibers from said opening means to said fiber-collecting surface;
• controllable suction source means for providing a suction force;
• first suction line means, adapted for selectively providing suction to said fiber-collecting surface from said suction source means in the form of spinning suction which permits normal draw off of thread from said fiber-collecting surface;
• second suction line means, adapted for selectively providing suction to the periphery of said opening means from said suction source means in the form of deflecting suction which deflects opened fibers from a mouth of said fiber channel means to thereby prevent their being supplied to said fiber-collecting surface;
• and
• suction control means, operatively associated with said suction source means and said first and second suction lines, for controllably varying the respective amounts of spinning and deflecting suction so that inconspicuous thread joins are produced by said spinning apparatus.

A spinning apparatus for drawing off a thread end from a fiber-collecting surface with fibers continuously tied thereinto, comprising:

• feed means for supplying a sliver;
• opening means for receiving said sliver and opening same into separated fibers;
• a fiber transport path along which flows said separated fibers, collectively defining a fiber stream;
• a fiber-collecting surface for collecting said opened fibers thereon to be subsequently drawn off as thread, said surface being associated with an open-end spinning means;
• feed channel means for providing passage of opened fibers from said opening means to said fiber collecting surface;
• first suction source means for providing a suction force in the form of spinning suction;
• first suction line means, adapted for selectively providing said spinning suction to said open-end spinning means which permits normal draw-off of thread from said fiber-collecting surface;
• first suction control means, operatively associated with said first suction source means and said first suction line means, for controllably varying the amount of said spinning suction;
• second suction source means for providing a suction force in the form of a deflecting suction;
• second suction line means, adapted for providing said deflecting suction to the periphery of said opening means which deflects opened fibers from a mouth of said feed channel means to thereby prevent their being supplied to said fiber-collecting surface;
• second suction control means, operatively associated with said second suction source means and said second suction line means, for controllably varying the amount of said deflecting suction;
• control device means for operating said first suction control means and said second suction control means in a coordinated manner to vary the respective amounts of spinning and deflecting suction so that inconspicuous thread joins are produced by said spinning apparatus.