Method for starting a spindle of a cabling or two-for-one twisting machine
A method for starting a spindle of a cabling or two-for-one twisting machine, wherein a yarn reserve is formed on a take-up package, the machine has a workstation having a spindle pot for holding a first feed package and having a spindle rotor with a lateral outlet below the spindle pot, an outer yarn from one feed package is wound around an inner yarn from another feed package and the outer yarn is guided through the spindle shaft and its lateral outlet in a balloon orbiting the spindle pot to a yarn-guiding device above the spindle which merges the two yarn supplies, and a winding device in which the produced twist is wound onto the take-up package. A ratio of the take-up speed of the twist to the rotation speed of the spindle rotor is increased in comparison with the production data is used during creation of the yarn reserve.
1. A method for starting a spindle of a cabling or two-for-one twisting machine at the start of a spindle journey, wherein the cabling or two-for-one twisting machine has at least one workstation, each workstation having a spindle pot at rest during the twisting for holding a first feed package and having a rotating, hollow spindle rotor with a spindle hollow shaft, which has a lateral outlet opening arranged below the spindle pot at a distance from the spindle hollow shaft, wherein an outer yarn pulled from a second feed package is wound around an inner yarn pulled from the first feed package and wherein the outer yarn is guided through the spindle hollow shaft and through the lateral outlet opening thereof and in a yarn balloon orbiting the spindle pot to a yarn-guiding device, which is arranged above the spindle in extension of a spindle axis and which merges two yarn supplies, and a winding device is present, in which the winding device creates a produced twist that is wound onto a take-up package,
characterized in that
the method comprising:
creating a yarn reserve on an empty take-up package by using a start-up ratio of a take-up speed of the produced twist to an actual rotation speed of the spindle rotor during start-up conditions, the start-up ratio being greater than a production ratio of a take-up speed of the produced twist to an actual rotation speed of the spindle rotor during production conditions.
2. The method according to claim 1 , characterized in that the take-up speed is increased during the creation of the yarn reserve in comparison with the take-up speed during production.
3. The method according to claim 1 , characterized in that a run-up of the spindle rotor occurs with at least an acceleration increased by a factor of 1.2 during creation of the yarn reserve.