DRAFTING SYSTEM FOR A TEXTILE MACHINE
    2.
    发明公开

    公开(公告)号:US20230141021A1

    公开(公告)日:2023-05-11

    申请号:US18053779

    申请日:2022-11-09

    摘要: In a drafting system (1) for a textile machine, in particular an air-spinning machine, for drafting a strand-shaped fibre band fed to the drafting system, having a plurality of roller pairs arranged in succession in a running direction (A) of the fibre band and each having a top roller (3) and a bottom roller (4), and a weighting device for applying a load to the top roller (3) of the plurality of roller pairs; wherein the respective bottom roller (4) is mounted and held in a housing (2) of the drafting system (1), wherein the respective top roller (3) is mounted and held in the housing (2) of the drafting system (1) by means of a top roller carrier (30) which can be pivoted about a rotary axis.

    CLEANING DEVICE FOR A YARN FORMING ELEMENT OF AN AIR-SPINNING NOZZLE AND METHOD FOR CLEANING A YARN FORMING ELEMENT OF THIS TYPE

    公开(公告)号:US20220195635A1

    公开(公告)日:2022-06-23

    申请号:US17554243

    申请日:2021-12-17

    IPC分类号: D01H11/00 D01H4/02 B08B1/00

    摘要: The invention relates to a cleaning device for a yarn forming element of an air-spinning nozzle, to a spinning position of an air-spinning machine and to a method for cleaning a yarn forming element of this type. In order to provide a spinning position of an air-spinning machine and a method for cleaning a yarn forming element of an air-spinning machine which allow long and trouble-free operation with constant quality and strength of the yarn produced, it is provided that the cleaning device has a cleaning strip and a storage unit for providing and retracting the cleaning strip, a fixed end of the cleaning strip being fastened to the storage unit, and a free end of the cleaning strip being able to be provided for cleaning and retracted again after the cleaning. Furthermore, the cleaning device has a cleaning strip guide for feeding the free end of the cleaning strip to the yarn forming element of the air-spinning nozzle for mechanical cleaning.

    SPINNING POSITION WITH A CLEANING NOZZLE AND METHOD OF CLEANING A YARN FORMING ELEMENT

    公开(公告)号:US20220195634A1

    公开(公告)日:2022-06-23

    申请号:US17554174

    申请日:2021-12-17

    IPC分类号: D01H4/22 D01H4/02 D01H11/00

    摘要: The invention relates to a spinning position of an air-spinning machine, and to a method of cleaning a yarn forming element of an air spinning nozzle. To provide a spinning position of an air-spinning machine and a method for cleaning a yarn forming element of an air spinning nozzle of the air-spinning machine, which enable long and trouble-free operation while maintaining the quality and strength of the yarn produced, the spinning position has an air spinning nozzle with a yarn forming element arranged within a vortex chamber for producing a yarn from a fibre band supplied to the air spinning nozzle, in which case the air spinning nozzle can be transferred from a closed state for yarn formation to an open state in which the yarn forming element can be cleaned. In addition, at least one cleaning nozzle for cleaning the yarn forming element in the open state of the air spinning nozzle is arranged at the spinning position, the cleaning nozzle being designed, in particular positioned and/or aligned or positionable and/or alignable, in such a way that, at least in the open state of the air spinning nozzle, the yarn forming element can have a cleaning medium applied to it through the cleaning nozzle.

    DRAWING AND SPINNING APPARATUS AND METHOD OF MIXED YARNS FOR AIR SPINNING MACHINES WITH MULTIPLE FEEDS

    公开(公告)号:US20200263328A1

    公开(公告)日:2020-08-20

    申请号:US16596391

    申请日:2019-10-08

    IPC分类号: D01H4/02 D01H4/38 D01H4/34

    摘要: A drawing and spinning apparatus of mixed yarns for air spinning machines with multiple feeds comprises at least a first and a second introducer element, an air spinning device, a drawing device, interposed between the introducer elements and the air spinning device, an air spinning chamber, an introducer nozzle shaped to receive the webs from the drawing device into respective insertion channels and introduce the webs into the spinning chamber according to a longitudinal feeding direction. With respect to a cross-section plane perpendicular to the longitudinal feed direction, groove bottoms of each of the two insertion channels of the webs into the chamber are aligned along a segment which is offset by an eccentricity with respect to a geometric centre of the chamber itself, through which a symmetry axis of the spinning chamber passes, the eccentricity being less than 5% of a maximum diameter of the spinning chamber.

    DRAWING APPARATUS AND METHOD FOR AIR SPINNING MACHINES WITH MULTIPLE FEEDS

    公开(公告)号:US20200149197A1

    公开(公告)日:2020-05-14

    申请号:US16674166

    申请日:2019-11-05

    IPC分类号: D01H4/02 D01H4/30

    摘要: A drawing apparatus (4) for air spinning machines with multiple feeds, comprising: at least a first and a second introducer element (8,12), independent of each other, so as to be able to feed simultaneously at least two separate slivers (N1, N2) of textile fiber, an air spinning device (16) suitable to spin said slivers (N1, N2) of textile fiber, a drawing device (24) placed. between the introducer elements (8, 12) and the air spinning device (16), comprising a plurality of pairs of drawing rollers (28), comprising one drive roller (32) and one idle roller (36) per pair, said drawing rollers (28) being suitable to perform a progressive drawing of each sliver simultaneously intercepted by them, characterized in that at least one drive roller (32) of a pair of said drawing rollers (28), is mechanically split into a first drive roller (40) which intercepts a first sliver (N1) and a second drive roller (44) which intercepts the second sliver (N2), said first and second drive rollers (40,44) being operatively connected to separate drive means so that they may be operated at different speeds of rotation, to perform different degrees of drawing of the two slivers (N1, N2) intercepted by said first and second drive roller (40,44), wherein said first drive roller (40) is associated with a first idle roller (52) and said second drive roller (44) is associated with a second idle roller (56), said idle rollers (52,56) being mechanically separate from each other.

    Spinning unit of an air jet spinning machine and the operation of such a machine

    公开(公告)号:US09719192B2

    公开(公告)日:2017-08-01

    申请号:US14813968

    申请日:2015-07-30

    IPC分类号: D01H4/02 D01H1/115 D01H13/30

    摘要: A method and system for operating an air jet spinning machine, that features at least one spinning unit with one spinning nozzle for producing a yarn. During normal operation of the spinning unit, a fiber composite is fed to the spinning nozzle through an inlet and in a predefined transport direction. The fiber composite within a vortex chamber of the spinning nozzle receives a twist with the assistance of a vortex air flow, such that a yarn is formed from the fiber composite, which leaves the spinning nozzle through an outlet. After an interruption in yarn production, a piecing process is carried out, with which one yarn end on the spool side moves counter to the transport direction through the spinning nozzle, is overlaid with one end of the fiber composite after passing through the spinning nozzle and, together with this, is brought through the inlet into the spinning nozzle. After conclusion of the piecing process, the production of yarn is continued through the resumption of normal operation. During the piecing process, at least temporarily, additive is applied at the end of the fiber composite.

    Spinning unit of an air jet spinning machine and its operation

    公开(公告)号:US09670600B2

    公开(公告)日:2017-06-06

    申请号:US14710814

    申请日:2015-05-13

    摘要: A spinning unit is provided for an air jet spinning machine with a spinning nozzle used to manufacture yarn from a fiber strand. The spinning nozzle has an inlet for the fiber strand, a vortex chamber, a yarn forming element protruding into the vortex chamber, and a draw-off channel for the yarn. An additive supply is assigned to the spinning nozzle and designed so that the spinning nozzle is supplied with an additive. The yarn forming element has at least one additive duct that ends in the vortex chamber or the draw-off channel. The additive supply encompasses an additive supply line connected to the additive duct so that an additive introduced into the additive duct via the additive supply line can be introduced into the draw-off channel and/or the vortex chamber. A process for operating an air jet spinning machine with at least one spinning unit is provided. An additive is added, at least intermittently, to the spinning nozzle of the spinning unit while it is operating with the help of an additive supply. The added additive is delivered through an additive duct of the yarn forming element to the draw-off channel and/or the vortex chamber.

    Spinning point of a spinning machine and method for the operation of the same
    10.
    发明授权
    Spinning point of a spinning machine and method for the operation of the same 有权
    纺纱机的纺纱点及其操作方法

    公开(公告)号:US09353463B2

    公开(公告)日:2016-05-31

    申请号:US14218033

    申请日:2014-03-18

    摘要: A spinning point of a spinning machine includes a spinning unit, a drawing-off device for the yarn downstream of the spinning unit and a yarn storage downstream of the drawing-off device for the intermediate storage of a section of yarn. The yarn storage has a sensor system for monitoring the filling level of the yarn storage (7). The spinning point includes a winding device for the yarn downstream of the yarn storage, along with a return unit, with the assistance of which an end of the yarn found within the yarn storage after a yarn break is returned into the area of the spinning point. The winding device (9) is stopped in the case of a yarn break in such a manner that, after the stop, an end section of the yarn remains within the yarn storage (7). Subsequent to this, a part of the yarn is separated with the assistance of a yarn separation unit internal to the spinning point, and that the end of the yarn that newly arises in this manner is returned with the assistance of the return unit internal to the spinning point into the area of the spinning point, and that a piecing process is then carried out.

    摘要翻译: 纺纱机的纺丝点包括纺纱单元,用于纺纱单元下游的纱线的牵引装置,以及用于纱线部分的中间储存的牵引装置下游的纱线保存器。 纱线存储器具有用于监测纱线存储器(7)的填充水平的传感器系统。 旋转点包括用于纱线存储器下游的纱线的卷绕装置以及返回单元,在纱线断裂返回到纺丝点的区域中之后,在纱线存储器内发现纱线的端部 。 在断纱的情况下,卷绕装置(9)停止,使得在停止之后纱线的端部部分保持在纱线存放部(7)内。 在此之后,一部分纱线在纺纱点内部的纱线分离装置的帮助下分离,并且以这种方式新出现的纱线的末端在内部的返回单元的帮助下返回 旋转点到纺纱点的区域,然后进行接头处理。