Process and an arrangement for exchanging spools and packages at an individual spinning unit of a spinning machine

A spinning machine having a plurality of spinning units which each contain:

• yarn spinning devices for spinning at least one yarn,
• withdrawing devices for withdrawing the yarn,
• cross-winding devices having a cross-winding yarn quite for the winding-up of the yarn,
• filling ratio detecting devices for detecting the filling ratio of the produced spool package, and
• interrupting devices for the individual interrupting of the spinning operation at the spinning unit, wherein the detecting devices are connected to devices for reducing the winding speed and to yarn lifting devices for lifting the yarn out of the cross-winding yarn guide in response to reaching a predetermined filling ratio of the spool package,
• wherein a final winding yarn guiding device is provided which is separately movable with respect to the cross-winding yarn guide and which can be brought into the travel path of the yarn in front of the spool package to guide the final windings on the spool package with the yarn lifted out of the cross-winding yarn guide,
• wherein a movable servicing device is provided which can be selectively moved to respective spinning units and which includes means for assisting in final winding of spool packages and removal of same from a spinning unit,
• wherein said movable servicing device includes yarn strengthening devices for strengthening spun yarn before it is wound up as final windings on a spool package.

A spinning machine having a plurality of spinning units which each contain:

• yarn spinning devices for spinning at least one yarn,
• withdrawing devices for withdrawing the yarn,
• cross-winding devices having a cross-winding yarn guide for the winding-up of the yarn,
• filling ratio detecting devices for detecting the filling ratio of the produced spool package, and
• interrupting devices for the individual interrupting of the spinning operation at the spinning unit, wherein the detecting devices are connected to devices for reducing the winding speed and to yarn lifting devices for lifting the yarn out of the cross-winding yarn guide in response to reaching a predetermined filling ratio of the spool package, and
• wherein a final winding yarn guiding device is provided which is separately movable with respect to the cross-winding yarn guide and which can be brought into the travel path of the yarn in front of the spool package to guide the final windings on the spool package with the yarn lifted out of the cross-winding yarn guide.

A spinning machine having a plurality of spinning units which each contain:

• yarn spinning devices for spinning at least one yarn,
• withdrawing devices for withdrawing the yarn,
• cross-winding devices having a cross-winding yarn guide for the winding-up of the yarn,
• filling ratio detecting devices for detecting the filling ratio of the produced spool package, and
• interrupting devices for the individual interrupting of the spinning operation at the spinning unit, wherein the detecting devices are connected to devices for reducing the winding speed and to yarn lifting devices for lifting the yarn out of the cross-winding yarn guide in response to reaching a predetermined filling ratio of the spool package,
• wherein a final winding yarn guiding device is provided which is separately movable with respect to the cross-winding yarn guide and which can be brought into the travel path of the yarn in front of the spool package to guide the final windings on the spool package with the yarn lifted out of the cross-winding yarn guide, and
• wherein each spinning unit is equipped with a storage device for storing the spun yarn, said storage device being arranged in the travel direction of the yarn downstream of the withdrawal device.

A spinning machine having a plurality of spinning units which each contain:

• yarn spinning devices for spinning at least one yarn,
• withdrawing devices for withdrawing the yarn,
• cross-winding devices having a cross-winding yarn guide for the winding-up of the yarn,
• filling ratio detecting devices for detecting the filling ratio of the produced spool package, and
• interrupting devices for the individual interrupting of the spinning operation at the spinning unit, wherein the detecting devices are connected to devices for reducing the winding speed and to yarn lifting devices for lifting the yarn out of the cross-winding yarn guide in response to reaching a predetermined filling ratio of the spool package,
• wherein a final winding yarn guiding device is provided which is separately movable with respect to the cross-winding yarn guide and which can be brought into the travel path of the yarn in front of the spool package to guide the final windings on the spool package with the yarn lifted out of the cross-winding yarn guide,
• wherein a movable servicing device is provided which can be selectively moved to respective spinning units and which includes means for assisting in final winding of spool packages and removal of same from a spinning unit, and
• wherein said movable servicing device includes a yarn storage device for storing yarn during final winding on a spool package after the yarn is lifted out of the cross-winding yarn guide.

A process for forming spool packages at an individual spinning unit of a spinning machine having a plurality of spinning units of the type which each produce at least one yarn which is withdrawn by means of a withdrawal device and is wound onto a spool package by means of a winding device which contains a cross-winding yarn guide distributing the yarn in longitudinal direction of the spool package, in which case, after a given filling ratio of the spool package is reached, the further yarn production at the respective spinning unit is interrupted and a yarn end is wound onto the spool package, said process comprising:

• continuously spinning yarn at a spinning unit,
• cross-winding the yarn being spun at the spinning unit on a spool package arranged at the spinning unit, said cross-winding being performed by a cross-winding yarn guide arranged at the spinning unit,
• disengaging the yarn being spun from the cross-winding yarn guide when a given filling ratio of the spool package is reached, and subsequently winding the yarn being spun as final windings to thereby facilitate location of the yarn end on the completed spool package during subsequent processing of the yarn, wherein the spinning unit is of the type which produces a double yarn with prestrengthened components, and wherein the yarn ends wound up during the formation of the final windings is further strengthened before moving onto the spool package.

A process for forming spool packages at an individual spinning unit of a spinning machine having a plurality of spinning units of the type which each produce at least one yarn which is withdrawn by means of a withdrawal device and is wound onto a spool package by means of a winding device which contains a cross-winding yarn guide distributing the yarn in longitudinal direction of the spool package, in which case, after a given filling ratio of the spool package is reached, the further yarn production at the respective spinning unit is interrupted and a yarn end is wound onto the spool package, said process comprising:

• continuously spinning yarn at a spinning unit,
• cross-winding the yarn being spun at the spinning unit on a spool package arranged at the spinning unit, said cross-winding being performed by a cross-winding yarn guide arranged at the spinning unit,
• disengaging the yarn being spun from the cross-winding yarn guide when a given filling ratio of the spool package is reached, and subsequently winding the yarn being spun as final windings to thereby facilitate location of the yarn end on the completed spool package during subsequent processing of the yarn, wherein the spinning unit is of the type which produces a double yarn with prestrengthened components, and wherein the spinning unit is of the type which produced a double yarn with two prestrengthened components, and wherein the ends of the two yarn components are connected with one another before moving onto the spool package.

A spinning machine having a plurality of spinning units which each contain:

• yarn spinning devices for spinning at least one yarn,
• withdrawing devices for withdrawing the yarn,
• cross-winding devices having a cross-winding yarn guide for the winding-up of the yarn,
• filling ratio detecting devices for detecting the filling ratio of the produced spool package, and
• interrupting devices for the individual interrupting of the spinning operation at the spinning unit, wherein the detecting devices are connected to devices for reducing the winding speed and to yarn lifting devices for lifting the yarn out of the cross-winding yarn guide in response to reaching a predetermined filling ratio of the spool package, wherein a final winding yarn guiding device is provided which is separately movable with respect to the cross-winding yarn guide and which can be brought into the travel path of the yarn in front of the spool package to guide the final windings on the spool package with the yarn lifted out of the cross-winding yarn guide.