公开(公告)号：US20130168480A1

公开(公告)日：2013-07-04

申请号：US13724771

申请日：2012-12-21

申请人： L.G.L. ELECTRONICS S.P.A.

发明人： Giorgio BERTOCCHI ,  Giovanni PEDRINI ,  Pietro ZENONI

IPC分类号： D03D47/36

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。

公开(公告)号：US20160068365A1

公开(公告)日：2016-03-10

申请号：US14847939

申请日：2015-09-08

申请人： L.G.L. ELECTRONICS S.P.A.

发明人： Giorgio BERTOCCHI ,  Mauro VARISCHETTI ,  Pietro ZENONI

IPC分类号： B65H49/34 ,  G01D5/34

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.

摘要翻译： 支撑在马达壳体上的电动旋转滚筒承载缠绕在其上的多个纱线环，这样的环适于根据下游机器的要求展开。纱线退绕传感器包括发光元件和光接收元件，两者均为 与电机外壳成一体。 与鼓一体的导光元件将来自发光元件的光引导到在旋转滚筒上限定的位置，使其在其旋转展开运动期间被纱线重复地接合在一起的位置，反之亦然 。 反射表面将从窗户出来的光反射回窗口。 与电动机壳体成一体的偏光元件偏离从窗口向光接收元件返回的光。 基于由纱线在窗户上转移而产生的光的变化来确定纱线从滚筒的展开。

公开(公告)号：US20130167968A1

公开(公告)日：2013-07-04

申请号：US13724622

申请日：2012-12-21

申请人： L.G.L. Electronics S.P.A.

发明人： Giorgio BERTOCCHI ,  Giovanni PEDRINI ,  Pietro ZENONI

IPC分类号： D03D47/34

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地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压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。