Method for operating a spindle of a two-for-one twister or cabling machine
AssigneeOerlikon Textile GmbH & Co. KG
InventorWalter Schlagenhaft
Life of this patent
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Abstract
A two-for-one twister or cabling machine and a method for operation thereof, wherein a yarn (5, 25) is withdrawn from a supply bobbin (7, 21) and fed to a guide device below a twisted yarn plate (8, 24) of the spindle (2, 22) and from which the yarn (5, 25) exits virtually perpendicular to the axis of the spindle (2, 22) and is deflected to the outer edge of the twisted yarn plate (8, 24) and runs along the spindle (2, 22) as a free yarn balloon (B) encompassing the spindle (2, 22), until the yarn (5, 25) is fed into the twist or cabling point of a yarn guide device (9, 27) above the spindle (2, 22). The supply speed of the yarn (5, 25) is adjusted to achieve a yarn tension which minimizes the yarn balloon diameter as a function of the spindle geometry.
Claims12
Method for operating a spindle (2, 22) of a two-for-one twister or cabling machine, in which a yarn (5, 25) is withdrawn from a supply bobbin (7, 21) and fed to a guide device, which is arranged below a twisted yarn plate (8, 24) of the spindle (2, 22) and from which the yarn (5, 25) exits virtually perpendicular to the longitudinal axis of the spindle (2, 22) and is deflected to the outer edge of the twisted yarn plate (8, 24) and runs along the spindle (2, 22) as a free yarn balloon (B) encompassing the spindle (2, 22), until the yarn (5, 25) is fed into the twist or cabling point of a yarn guide device (9, 27) above the spindle (2, 22), characterized in that the supply speed of the yarn (5, 25) is adjusted by a yarn tension influencing device (6, 26), without a yarn storage means, for varying the yarn tension according to a determined yarn requirement which produces a modified discharge geometry of the yarn and minimizes the diameter of the free yarn balloon (B) encompassing the spindle (2, 22) as a function of the geometry of the spindle (2, 22).
Two-for-one twister or cabling machine comprising a plurality of workstations (1, 20) which each have a spindle (2, 22) driven by a spindle drive (3, 23), a twisted yarn plate (8, 24) arranged below the spindle (2, 22), on which plate a guide device for a yarn (5, 25) is arranged, from which the yarn (5, 25) exits substantially radially with respect to the spindle (2, 22) and forms a free yarn balloon (B) around the spindle (2, 22), until the yarn (5, 25) is fed into the twist or cabling point of a yarn guide device (9, 26) above the spindle, characterized in that a controllable or regulatable yarn tension influencing device (6, 26), without a yarn storage means, is connected upstream of the twisted yarn plate (8, 24) to influence the yarn tension, by means of which device the supply speed of the yarn (5, 25) is adjusted for varying the yarn tension of the yarn (5, 25) entering the guide device according to a determined yarn requirement, which produces a modified discharge geometry of the yarn and minimizes the diameter of the free yarn balloon (B) encompassing the spindle (2, 22) as a function of the geometry of the spindle (2, 22).
Dependencies are inferred from the claim text.