Spinning device for producing a spun yarn by means of a circulating air flow
AssigneeW. Schlafhorst AG & Co.
InventorsHelmut Feuerlohn, Thomas Weide
Life of this patent
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Abstract
A spinning device for producing a spun yarn by a circulating air flow in a housing has an adjustment device (17) for controlling the angular position of the fiber ends wrapped around a spindle head, and in turn, the angular position of the fibers wrapped around the produced yarn, by adjusting a linear component of an air flow into the spinning device as a function of the yarn withdrawal speed, whereby a yarn is produced of a required yarn strength even during a spinning start phase in the process of making the spun yarn.
Claims8
A spinning device for producing a spun yarn by a circulating air flow, comprising a housing having an inlet opening for receiving a sliver, at least one sliver guidance element arranged downstream of the inlet opening, a hollow spindle through which a formed yarn is withdrawn, the spindle having a conical spindle head, and openings in the area of the spindle inlet for injecting into the housing a circulating air flow comprised of a linear airflow component essentially in a yarn traveling direction and a twisting airflow component essentially in a helical orientation about the yarn for wrapping free fiber ends of the sliver helically around the spindle head to subsequently be wrapped around the yarn at an acute angle in respect to the yarn traveling direction as the yarn is drawn off through the spindle;
- an adjustment device for adjusting at least the linear airflow component as a function of the withdrawal speed of the yarn and controlling a helical wrapping angle of the fiber ends around the spindle head and the acute angle of wrapping of the fibers around the yarn;
- and a control device for controlling the adjustment device between a setting for the spinning start process and at least one setting for normal spinning operations.
Dependencies are inferred from the claim text.