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69 条记录 (耗时 0.015 秒)

    Method and system to detect the presence of a broken needle in a needle textile machine
    1.
    发明授权
    Method and system to detect the presence of a broken needle in a needle textile machine 有权

    公开(公告)号：US11840778B2

    公开(公告)日：2023-12-12

    申请号：US17604786

    申请日：2020-04-29

    申请人： BTSR INTERNATIONAL S.P.A.

    发明人： Tiziano Barea

    IPC分类号： D04B35/18 ,  D04B35/12

    CPC分类号： D04B35/18 ,  D04B35/12

    摘要： A method for detecting the presence of one or more faulty and/or broken needles in a circular or rectilinear textile machine including a plurality of needles to which yarns are fed from yarn feed devices associated with that machine, each yarn being fed to the textile machine with at least one of its tension, feed speed and quantity fed characteristics being kept monitored and equal to a constant value during the production of an article or part thereof, with the provision of monitoring apparatus for monitoring the at least one characteristic capable of monitoring its value throughout the stage of feeding to the textile machine; provision is made for monitoring the tension and the feed speed of the yarn to identify a periodic variation in the same indicating the existence of at least one broken or faulty needle in the textile machine. A system for implementing this method.

    Monitoring device at a textile machine
    2.
    发明授权
    Monitoring device at a textile machine 失效
    纺织机器上的监控装置

    公开(公告)号：US6124803A

    公开(公告)日：2000-09-26

    申请号：US734670

    申请日：1996-10-18

    申请人： Gerhard Hamma

    发明人： Gerhard Hamma

    IPC分类号： B65H63/00 ,  D01H13/00 ,  D01H13/14 ,  D01H13/32 ,  D03D51/00 ,  D04B15/38 ,  D04B15/48 ,  D04B15/99 ,  D04B35/10 ,  D04B35/14 ,  D04B35/18 ,  G05B23/02 ,  G07C3/00 ,  G08B21/00 ,  H04Q9/00 ,  H04Q1/00

    CPC分类号： D04B15/99 ,  D01H13/32 ,  D04B15/48 ,  D04B35/10 ,  G07C3/00

    摘要： The invention is directed to a monitoring device at textile machines which have at least two stations (1a, 1b . . . 1n) which generate electrical status signals in the event of the occurrence of preselected states. According to the invention, storages (IC.sub.1 . . . IC.sub.n) associated individually with the stations generate status signals which are encoded with an identification code in such a way that an evaluation of the status signals in an interrogating and evaluating unit (8) can determine the station which generated the status signal (FIG. 1).

    摘要翻译： 本发明涉及一种在纺织机械上的监测装置，它具有至少两个在发生预选状态的情况下产生电状态信号的工位（1a，1b。...）。 根据本发明，与台站单独关联的存储器（IC1 ... ICn）产生用识别码编码的状态信号，使得询问和评估单元（8）中的状态信号的评估可以确定 生成状态信号的站（图1）。

    Method and arrangement for optical control of the needles of knitting machines
    3.
    发明授权
    Method and arrangement for optical control of the needles of knitting machines 失效
    针织机针的光学控制方法和装置

    公开(公告)号：US5333208A

    公开(公告)日：1994-07-26

    申请号：US117645

    申请日：1993-09-08

    申请人： Robert Massen

    发明人： Robert Massen

    IPC分类号： D04B35/10 ,  D04B35/18 ,  G01N3/06 ,  G01N21/84 ,  G01N21/88 ,  G01N21/93 ,  G06T1/00 ,  G08B21/00 ,  H04N7/18 ,  G06K9/00

    CPC分类号： G01N21/88 ,  D04B35/18 ,  G01N2203/0647

    摘要： For controlling the quality of the needles of a knitting machine a test image of each needle is acquired with the aid of an image sensor when the needle is moved out of its rest position for forming a stitch. The analog image signals obtained on reading out the image sensor are converted to digital pixel signals, and the digital pixel signals of the test image or of individual test zones of the test image are processed for recovering information on the state of the particular needle being imaged. By using a coarse resolution image sensor it is possible to detect major faults during the normal operation of the knitting machine at full working speed. Needles exhibiting wear and minor faults can be detected by using a high resolution image sensor during special inspection times in which the knitting machine is operated at reduced speed.

    摘要翻译： 为了控制针织机的针的质量，当针被移出其静止位置以形成针迹时，借助于图像传感器获取每个针的测试图像。 在读出图像传感器时获得的模拟图像信号被转换为数字像素信号，并且处理测试图像或测试图像的各个测试区域的数字像素信号，以恢复关于被成像的特定针的状态的信息 。 通过使用粗分辨率图像传感器，可以在全工作速度下针织机的正常操作期间检测到主要故障。 通过在针织机以降低的速度进行的特殊检查时间中使用高分辨率图像传感器，可以检测出显示磨损和微小故障的针。

    Safety device for a knitting machine
    4.
    发明授权
    Safety device for a knitting machine 失效
    针织机安全装置

    公开(公告)号：US4505135A

    公开(公告)日：1985-03-19

    申请号：US501883

    申请日：1983-06-07

    申请人： Pierre L. Christinat ,  Louis Frund

    发明人： Pierre L. Christinat ,  Louis Frund

    IPC分类号： D04B15/36 ,  D04B15/96 ,  D04B35/10 ,  D04B35/18

    CPC分类号： D04B35/10

    摘要： A safety device is provided for a knitting machine to ensure that the carriage stops in the case of sudden variation of the speed as a result of an impact or other occurrence such as tangling of the yarn into a ball. The device includes a metal strip formed with equidistant perforations assembled parallel to one of the needle bars of the knitting machine. A bridge integral with the carriage moves along this strip, and has on one side an emitter and on the other a transducer. When the carriage moves the succession of perforations gives rise to pulses of length inversely proportional to the translational speed of the carriage. A CPU processing unit processes the signal obtained after amplification and shaping of the pulses and delivers a STOP signal when a sudden disturbance is detected in the movement of the carriage.

    摘要翻译： 针对针织机提供了一种安全装置，以确保在由于诸如将纱线缠结到球中而引起的冲击或其他发生的速度突然变化的情况下，滑架停止。 该装置包括金属带，其形成有与编织机的一个针杆平行组装的等距穿孔。 与托架一体化的桥沿该条移动，并且在一侧具有发射器，另一侧具有换能器。 当滑架移动时，连续的穿孔产生与滑架的平移速度成反比的长度的脉冲。 CPU处理单元处理在放大和整形脉冲之后获得的信号，并且当在滑架的运动中检测到突然的干扰时，传送STOP信号。

    Latch closer in combination with a closed latch detector
    5.
    发明授权
    Latch closer in combination with a closed latch detector 失效
    与闭合的闩锁检测器结合闭锁

    公开(公告)号：US4033149A

    公开(公告)日：1977-07-05

    申请号：US708908

    申请日：1976-07-26

    申请人： Angel C. Avalle

    发明人： Angel C. Avalle

    IPC分类号： D04B35/18

    CPC分类号： D04B35/18

    摘要： A device to stop a knitting machine when a needle hook has broken. The device consists of a directed blast of air at the needles of a knitting machine as the needles pass the point on the machine where an existing electronic detector device stops the machine upon indication that the needle latch is in the closed position. The blast of air raises the latch of a broken needle to the closed position to activate the detector. The latch of a needle in normal working order is restrained in the open position at the detector location by the action of a loop of yarn about the latch and is not affected by the blast of air. With a needle controlled to form a tuck stitch a broken needle hook which fails to catch a loop of yarn will result in an open latch condition which does not activate any detector in a conventional machine equipped only with a closed latch detector.

    摘要翻译： 当针钩破裂时停止针织机的装置。 该装置包括针织机针的空气定向鼓风，当针穿过机器上的点时，现有的电子检测装置在指示针销处于关闭位置时停止机器。 空气爆炸将断针的闩锁提升到关闭位置，以激活检测器。 在正常工作状态下，针的闩锁通过围绕闩锁的纱线的作用被限制在检测器位置处的打开位置，并且不受空气的鼓风影响。 当针被控制以形成一个折叠针迹时，不能抓住一圈纱线的断针钩将导致打开的闩锁状态，其在仅配备闭合闩锁检测器的常规机器中不激活任何检测器。

    Electrical supervisory circuit arrangements
    6.
    发明授权
    Electrical supervisory circuit arrangements 失效
    电气监控电路安排

    公开(公告)号：US3940954A

    公开(公告)日：1976-03-02

    申请号：US487395

    申请日：1974-07-10

    申请人： Luciano Romoli

    发明人： Luciano Romoli

    IPC分类号： D04B35/14 ,  D04B35/18

    CPC分类号： D04B35/14 ,  D04B35/18

    摘要： An electrical supervisory circuit arrangement, as for detecting faults such as yarn breakage in a circular knitting machine, comprises a number of channels each responsive to a particular type of fault signal in the machine. Each channel comprises a bistable transistor circuit which is switched in response to the particular fault condition to be detected and, when so switched, energises a warning light. In addition, all the bistable circuits are connected in common to an output transistor which is thus switched when any of the bistable circuits detects a fault. The output transistor controls two relays, one of which disconnects the forward-current supply to the machine and the other of which temporarily provides a reverse-current supply for braking the motor.

    摘要翻译： 用于检测圆形针织机中的断纱等故障的电监控电路装置包括多个通道，每个通道响应机器中特定类型的故障信号。 每个通道包括双稳态晶体管电路，该双稳态晶体管电路响应于待检测的特定故障状态而被切换，并且当这样切换时，激励警告灯。 此外，所有双稳态电路共同连接到输出晶体管，当任何双稳态电路检测到故障时，该输出晶体管因此被切换。 输出晶体管控制两个继电器，其中一个断开与机器的正向电流供应，另一个继电器临时提供用于制动电机的反向电流电源。

    Inspection apparatus for circular knitting machines
    7.
    发明授权
    Inspection apparatus for circular knitting machines 失效
    圆形针织机检查装置

    公开(公告)号：US3577750A

    公开(公告)日：1971-05-04

    申请号：US3577750D

    申请日：1969-07-18

    申请人： ELECTRONIT LTD

    发明人： VENCZEL JOSEPH

    IPC分类号： D04B35/18

    CPC分类号： D04B35/18

    摘要： Inspection apparatus in combination with a circular knitting machine, the apparatus performing the function of detecting a broken knitting needle and giving an alarm or stopping the machine in response to such detection. A sensing arrangement of a photoelectric or magnetic kind is positioned near the needles as they rotate and is so arranged to give curved pulses of amplitude corresponding to the size of the needle. A timing circuit gives an initial timing pulse when the amplitude of the curved pulse rises above a predetermined level and a final timing pulse when the amplitude of the curved pulse falls below the predetermined level. A multivibrator is triggered or synchronized to give reference pulses to predetermined lengths in response to each initial timing signal. Reference pulses are applied to a gate which is closed during the periods between initial timing signals and the following final timing signals. If a reference pulse or part of it is applied to the gate at any other time an alarm output signal is given. The multivibrator may be a monostable circuit, in which case gaps between groups of needles do not give an output or it may be a free-running multivibrator in which case missing needles are also detected.