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公开(公告)号：US09738484B2
公开(公告)日：2017-08-22
申请号：US14847939
申请日：2015-09-08
CPC分类号： B65H51/22 , B65H63/003 , B65H2701/31 , D03D47/367 , D04B15/48 , D04B15/486 , G01D5/342
摘要： A motorized rotary drum supported on a motor housing bears a plurality of yarn loops wound thereon, such loops being adapted to be unwound upon request from a downstream machine. A yarn-unwinding sensor comprises light-emitting elements and light-receiving elements both of which are integral with the motor housing. Light-guiding elements which are integral with the drum guide the light from the light-emitting elements to a window which is defined on the rotary drum in a position such that it is repeatedly engaged by the yarn during its rotary unwinding motion, and vice versa. A reflecting surface reflects the light coming out of the window back towards the window. Light-deviating elements which are integral with the motor housing deviate the light coming back from the window towards the light-receiving elements. The unwinding of a yarn loop from the drum is determined on the basis of the variation of light resulting from the yarn transiting on the window.
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公开(公告)号：US10358751B2
公开(公告)日：2019-07-23
申请号：US15624133
申请日：2017-06-15
发明人： Rosario Castelli , Pietro Zenoni
摘要： A yarn winding assembly installed on a support includes a motorized spool and an oblique spacer pin, between which a yarn is wound. The spacer pin is supported rotatably by a rotating supporting component so that it is entrained in two directions by the yarn wound between the spool and the spacer pin. The rotation of the spacer pin is delimited by an element of arrest at least in a direction of unwinding the yarn.
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公开(公告)号：US09604817B2
公开(公告)日：2017-03-28
申请号：US14620387
申请日：2015-02-12
发明人： Luca Gotti , Pietro Zenoni
CPC分类号： B65H51/22 , B65H2701/31 , D04B15/482 , D04B15/486
摘要： A yarn feeder is provided with a drum which is driven to rotate by a motor controlled by a control unit for drawing yarn from a reel and winding it upon itself in the shape of loops forming a stock. The control unit estimates the stock on the drum on the basis of an information indicative of the amount of yarn which is unwound from the drum upon request from a downstream machine, and of an information indicative of the amount of yarn which is wound on the drum, and retroactively controls the motor to substantially stabilize the stock on a reference value. The control unit also performs a parallel correction routine in which compares the stock with the reference value to estimate a stock status RES
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公开(公告)号：US10662557B2
公开(公告)日：2020-05-26
申请号：US16142264
申请日：2018-09-26
发明人： Pietro Zenoni , Luca Gotti
摘要： A textile machine receives a plurality of yarns from respective feeders, each provided with a control unit that calculates, for each garment produced, the amount of yarn consumed (YCmeas) and compares it with a reference consumption value (YCref). If the difference exceeds a preset limit value (% max) that indicates an anomaly, then an alarm is generated. Periodically, the control unit calculates an average consumption value (YCmed) on the basis of a preset number (Nmed) of already-finished garments, and compares it with the reference consumption value (YCref). If the difference exceeds a preset threshold value (% maxmed), then the reference consumption value (Yref) is set to the average consumption value (Ymed).
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公开(公告)号：US08584981B2
公开(公告)日：2013-11-19
申请号：US13694166
申请日：2012-11-02
摘要： A motorized yarn-winding drum holds a plurality of loops of yarn wound thereon and is driven to rotate for drawing said yarn from a reel and feeding it to a general downstream machine. A movable guiding member is biased to slideably engage the yarn unwinding from the drum and to deviate its path, by a spring acting in contrast to the tension of the yarn, thereby generating a reserve releasable in response to tension peaks on the yarn. The stroke of the guiding member is limited by a stop defining a position of maximum deviation of the yarn. The spring has one end operatively connected to the guiding member and one opposite end connected to driving elements operable for applying a load to the spring, with the guiding member abutting against said stop. The driving elements are controlled by a control unit which is programmed to adjust the load as a function of a desired feeding tension.
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公开(公告)号：US20130068872A1
公开(公告)日：2013-03-21
申请号：US13694166
申请日：2012-11-02
摘要： A motorized yarn-winding drum holds a plurality of loops of yarn wound thereon and is driven to rotate for drawing said yarn from a reel and feeding it to a general downstream machine. A movable guiding member is biased to slideably engage the yarn unwinding from the drum and to deviate its path, by a spring acting in contrast to the tension of the yarn, thereby generating a reserve releasable in response to tension peaks on the yarn. The stroke of the guiding member is limited by a stop defining a position of maximum deviation of the yarn. The spring has one end operatively connected to the guiding member and one opposite end connected to driving elements operable for applying a load to the spring, with the guiding member abutting against said stop. The driving elements are controlled by a control unit which is programmed to adjust the load as a function of a desired feeding tension.
摘要翻译： 电动纱线卷绕筒保持卷绕在其上的多根纱线，并被驱动旋转以便从卷轴拉出纱线并将其送入一般的下游机器。 可移动引导构件被偏置以可滑动地接合从滚筒退绕的纱线并且通过与纱线的张力相反的弹簧作用而偏离其路径，从而产生响应于纱线上的张力峰值而释放的储备。 引导构件的行程由限定纱线的最大偏差位置的止挡限制。 弹簧的一端可操作地连接到引导构件，并且一个相对端连接到可操作以向弹簧施加负载的驱动元件，导向构件抵靠所述止挡件。 驱动元件由控制单元控制，该控制单元被编程为根据期望的进给张力来调节负载。
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7.发明授权Yarn feeder provided with a stationary drum and with a controlled, weft-braking device 有权喂纱器配备有固定的滚筒和一个控制的纬纱制动装置公开(公告)号：US09353468B2
公开(公告)日：2016-05-31
申请号：US13724771
申请日：2012-12-21
CPC分类号： D03D47/364 , B65H51/22 , D03D47/347 , D03D47/366
摘要： A drum has a plurality of yarn loops wound thereon which are to be unwound upon request from a downstream machine. A weft-braking device provided with a braking member having a circular profile is biased against a delivery edge of the drum by driving elements. The yarn is adapted to run between the delivery edge and the braking member to receive a braking action by friction from them. The driving elements comprise at least one piezoelectric actuator which is deformable in response to a voltage applied thereto and has a movable operative end which is operatively connected to the braking member and a stationary operative end which is anchored to a stationary support.
摘要翻译： 滚筒具有缠绕在其上的多个纱线环，根据来自下游机器的要求将其解卷。 设置有具有圆形轮廓的制动构件的纬纱制动装置通过驱动元件偏压到滚筒的输送边缘。 纱线适于在输送边缘和制动部件之间运行，以通过它们的摩擦接受制动作用。 驱动元件包括至少一个压电致动器，其可响应于施加到其上的电压而变形，并且具有可操作地连接到制动构件的可动操作端和固定在固定支撑件上的固定操作端。
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公开(公告)号：US09303338B2
公开(公告)日：2016-04-05
申请号：US13724622
申请日：2012-12-21
CPC分类号： D03D47/347 , B65H51/22 , D03D47/364
摘要： The weft-braking device comprises a first annular plate coaxially supported in front of the delivery end of a stationary drum of a yarn feeder, and a second annular plate which is coaxially biased against the first annular plate by driving elements. The yarn is adapted to run between the annular plates in order to receive a braking action by friction. The driving elements comprise at least one piezoelectric actuator, which is deformable in response to a voltage applied thereto and has a movable operative end which is operatively connected to the second annular plate and a stationary operative end which is anchored to a stationary support.
摘要翻译： 纬纱制动装置包括同轴支撑在喂纱器的固定滚筒的输送端的前面的第一环形板，以及通过驱动元件同轴偏置抵靠第一环形板的第二环形板。 纱线适于在环形板之间延伸以便通过摩擦接收制动作用。 驱动元件包括至少一个压电致动器，其可响应于施加到其上的电压而变形，并且具有可操作地连接到第二环形板的可移动操作端和固定在固定支撑件上的固定操作端。
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9.发明授权Tension-controlling method for a yarn unwinding from a storage yarn feeder to a textile machine 有权用于从存放喂纱器到织机的纱线退绕的张力控制方法公开(公告)号：US09249531B2
公开(公告)日：2016-02-02
申请号：US13905361
申请日：2013-05-30
发明人： Pietro Zenoni , Luca Gotti
CPC分类号： D04B15/484 , B65H51/22 , B65H59/06 , B65H59/10 , B65H2701/31 , D03D47/347 , D03D47/364 , D03D47/367 , D04B15/44 , D04B15/482
摘要： The yarn tension is modulated by a yarn-braking device controlled by a control unit which receives signals of measured tension from a tension sensor and compares them with a reference tension signal in a control loop; as long as the reference tension remains unchanged, a first set of coefficients is used in the control loop causing the control loop to have a relatively slow behavior in relation to the error-compensating action; when a change in the reference tension occurs, the system switches to a second set of coefficients causing the control loop to have a relatively fast behavior; the second set of coefficients is maintained as long as the difference between the second value of the reference tension and the measured tension remains greater or equal to a predetermined minimum value, then the system switches again to the first set of coefficients.
摘要翻译： 纱线张力由控制单元控制的纱线制动装置调节，该控制单元从张力传感器接收测量张力的信号，并将其与控制回路中的参考张力信号进行比较; 只要参考张力保持不变，则在控制回路中使用第一组系数，使得控制回路相对于误差补偿动作具有相对较慢的行为; 当参考张力发生变化时，系统切换到第二组系数，导致控制回路具有相对较快的行为; 只要基准张力的第二值与被测张力之间的差值保持大于或等于预定的最小值，则第二组系数被维持，则系统再次切换到第一组系数。
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