Method of and apparatus for spinning yarn after break on workstation of a rotor-spinning machine
A technology for yarn spinning and spinning machines, which is applied to open-end spinning machines, spinning machines, and continuous winding spinning machines, etc. It can solve the problems of no synchronization and poor joint quality
Inactive Publication Date: 2013-12-18
RIETER CZ AS
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Problems solved by technology
Since the weight configuration of the bobbin is influenced by its shape, i.e. by the fact that it is a cylindrical or conical bobbin, even this scheme does not provide optimal synchronization
[0010] Another consequence of the inaccurate timing of the stringing-in operation is the poor quality of the piecing, where the ends of the already spun yarn join the newly spun yarn
Method used
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Embodiment Construction
[0073] The workstation of an open-end spinning machine comprises a spinning unit 1 for spinning a yarn 11 from a sliver 2 located at the workstation placed in a spinning cylinder 21 . Arranged above the spinning unit 1 in the frame 10 of the machine is a drawing mechanism 3 from which the yarn 11 is spun and a winding device 4 with a final winding bobbin 41 . A deflecting spinning unit 5 for the yarn 11 is arranged between the drawing device 3 for the yarn 11 and the winding device 4 .
[0074] Arranged in the spinning unit 1 is a spinning rotor 12 coupled by means of a belt drive not shown to a drive roller not shown formed by a shaft placed along the spinning machine and for the spinning of a row of workstations. The yarn rotors 12 are shared.
[0075] Arranged in front of the spinning rotor 12 in the spinning unit 1 is an opening device 13 comprising a combing roller 131 driven by another not shown drive roller driven by the The shaft on which the machine is placed forms ...
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In the present invention, there is disclosed a method of spinning yarn after break on workstation of a rotor-spinning machine provided with a control unit and independent drives of at least a fiber sliver feeding mechanism and a spun yarn drawing-off mechanism, wherein the method comprises the following steps of: preparation of the yarn for spinning; preparation of the spinning rotor for spinning; and the control unit final spinning steps comprising at least: start of the fiber sliver feed into a separating mechanism; lowering the yarn spinning end onto a collecting groove of the spinning rotor; start of movement of the wound bobbin towards a driving roller and start of the yarn drawing-off and winding. The rate of the fiber sliver feed is controlled in dependence on the rate of the spun yarn drawing-off. The start and course of the final spinning steps is controlled according to the shape and actual weight of the wound bobbin and / or according to the actual moment of gyration of the wound bobbin.
Description
technical field [0001] The invention relates to a method for spinning-up a yarn after breakage at a workstation of an open-end spinning machine equipped with a control unit and independent drives of at least a supply device for the sliver and a pulling mechanism for spinning out the yarn Mechanism, the method comprising a yarn spinning-in preparation step, a spinning rotor preparation step for spinning-in and a final spinning-in step comprising at least starting to supply a fiber sliver to a picking device, feeding the picked fiber to into the spinning rotor, drop the end of the raw-in yarn onto the collecting groove of the spinning rotor, start the movement of the winding bobbin towards the The pulling speed of the yarn is used to control the conveying speed of the fiber yarn. [0002] The invention also relates to a device for spinning-in a yarn in an operating unit of an open-end spinning machine after breakage, comprising: a spinning unit with a spinning rotor; a supply d...
Claims
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Inventor P.考萨利克J.马克尔J.斯洛彭斯基
Owner RIETER CZ AS