Servicing apparatus which can be moved along a spinning machine and has devices for seeking a yarn end from a spool package
AssigneeHans Stahlecker
InventorFritz Stahlecker
Life of this patent
Estimating the term…
Abstract
A servicing apparatus and method are disclosed for locating a yarn end on a spool package at respective ones of the plurality of spinning units. A mobile servicing unit includes an auxiliary driving roller for driving the spool package and a yarn seeking nozzle for seeking a yarn end on the spool package. To obtain a precisely spaced location of the yarn seeking nozzle from the outer circumference of the spool package for different diameter spool packages, devices are provided for determining the package diameter and for controlling the position of the yarn seeking nozzle in the radial direction of the spool package as a function of the determined diameter.
Claims21
A servicing apparatus for a spinning machine of the type which provides spun yarn wound onto a spool package at each of a plurality of spinning units, comprising:
- an auxiliary driving roller,
- an auxiliary driving roller moving device for selectively applying the auxiliary driving roller to the circumference of the spool package for driving the spool package,
- a yarn seeking nozzle for seeking a yarn end on the spool package,
- an adjusting drive device for selectively moving the yarn seeking nozzle to a yarn seeking position in direct proximity to the spool package at a location spaced from the auxiliary driving roller,
- a spool package diameter determining device, and
- a spool package diameter accommodating controller for controlling the adjusting drive device to position the yarn seeking nozzle at different positions in dependence on the respective determined diameter of the spool package, whereby precise spaced location of the yarn seeking nozzle from the outer circumference of the spool package is achieved for different diameter spool packages.
A servicing arrangement for a spinning machine of the type which provides spun yarn wound onto a spool package at each of a plurality of spinning units, comprising:
- an auxiliary driving roller,
- an auxiliary driving mechanism for selectively applying the auxiliary driving roller to the circumference of the spool package for driving the spool package,
- a yarn seeking nozzle for seeking a yarn end on the spool package,
- an adjusting drive device for selectively moving the yarn seeking nozzle to a yarn seeking position in direct proximity to the spool package at a location spaced from the auxiliary driving roller,
- a spool package diameter determining device, and
- spool package diameter accommodating apparatus for controlling the adjusting drive to position the yarn seeking nozzle at different positions in dependence on the respective diameter of the spool package, whereby precise spaced location of the yarn seeking nozzle from the outer circumference of the spool package can be readily achieved for different diameter spool packages.
A method of servicing a spinning machine of the type which provides spun yarn wound onto a spool package at each of a plurality of spinning units, including:
- selectively operating an auxiliary driving roller,
- selectively applying the auxiliary driving roller to the circumference of the spool package for driving the spool package,
- seeking a yarn end on the spool package by using a yarn seeking nozzle,
- and selectively moving the yarn seeking nozzle to a yarn seeking position in direct proximity to the spool package at a location spaced from the auxiliary driving roller,
- wherein said selectively moving the yarn seeking nozzle includes positioning the yarn seeking nozzle at different predetermined positions in dependence on the respective diameter of the spool package so as to locate the yarn seeking nozzle with respect to the outer circumference of the spool package for different diameter spool packages.
Dependencies are inferred from the claim text.