Method and apparatus for reestablishing the spinning operation

Details Method and apparatus for reestablishing the spinning operation Method and apparatus for reestablishing the spinning operation

1989-01-23

1990-05-01

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Piecing up

D01H 1502

Patent

active

049207393

ABSTRACT:
A method and apparatus for reestablishing the spinning operation at a spinning station of an open end spinning machine after a yarn break or after completion of winding of a full package. A traveling piecing unit responds to signals at a spinning station that indicate that a yarn break has occurred, that a package changing operation has occurred, or that winding of a package has been completed. Independently, a traveling package changing unit responds to a signal indicating that winding of a package has been completed at a spinning station and performs the package changing operation. When the piecing unit responds to a yarn break at a spinning station, it locates and withdraws the end of broken yarn from the package and positions it in a position where the unit then feeds the end to the spinning element to piece it with new yarn being spun and then releases it to the package, which resumes winding. When the piecing unit operates to restart winding after a package changing operation, it positions an end of yarn from a package of auxiliary yarn and performs the same piecing operation as with an end from a yarn break and then feeds the yarn onto the positioned empty bobbin.

REFERENCES:
patent: 3791126 (1974-02-01), Kose et al.
patent: 3855771 (1974-12-01), Yoshizawa et al.
patent: 4139162 (1979-02-01), Stahlecker
patent: 4175370 (1979-11-01), Stahlecker
patent: 4539803 (1985-09-01), Ferro
patent: 4630782 (1986-12-01), Rohner
patent: 4653261 (1987-03-01), Schrieber et al.
patent: 4736898 (1988-04-01), Raasch et al.

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