• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Q A piezoelectric transducer for yarn feelers for fitting to spinning and weaving machines and devices, constituted by a single ceramic member incorporating the yarn guide and cemented directly to a ceramic piezoelectric element, the size and shape of said member being chosen such that its resonance frequencies are very different from those of the textile machines and devices to which the yarn feeler is to be fitted.
    公开号:SU1600635A3
    申请号:SU843805280
    申请日:1984-10-05
    公开日:1990-10-15
    发明作者:Боббола Паоло
    申请人:Рой Электротекс С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the textile industry.
    The purpose of the invention is to increase the reliability of the control.
    FIG. Figure 1 shows the construction of a piezoelectric transducer for yarn movement monitoring sensors on weaving looms, front view and section view, fig. 2, 3 and 4 - designs of piezoelectric transducers for sensors controlling the movement of fibrous materials (yarn, respectively, on carding, warping and spinning machines.
    The piezoelectric transducer for yarn motion control sensors contains a thread guide 1, made in a ceramic element 2, on which piezoelectric element 3 is placed.
    Ceramic element 2 has the geometrical dimensions and shape, providing a resonant frequency exceeding the resonant frequency of the fixing unit of the machine (machine).
    It is preferable to perform a piezoelectric transducer such that the thread guide 1 in the direction of yarn movement has a length greater than the length of the body.
    The piezoelectric transducer operates as follows.
    When prc m moves through clamping I, oscillations of ceramic element 2 occur, which are transmitted to the piezoelectric element 3. Element 3 converts these high-frequency vibrations into an electrical signal, the presence of which indicates that the yarn is changing. When the yarn movement stops, there are no high-frequency oscillations EP1 and, therefore, no electrical signal.
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    权利要求:
    Claims (2)
    [1]
    1. A piezoelectric transducer for yarn movement control sensors on spinning machines and weaving machines, containing a casing mounted on a fixing unit of a machine or machine, in which
    A piercer made in a ceramic element and a piezoelectric element characterized by
    the fact that, in order to increase the reliability of the control, the piezoelectric element is placed on a ceramic element having geometric dimensions and shape that provide a resonant
    frequency exceeding the resonant frequency of the machine or machine fixing unit.
    [2]
    2. The transducer according to claim 1, which is characterized in that the thread guide in the direction of movement of the yarn has an excess of the length of the body.
    g
    Phi2.1
    one
    FIG. 2
    m
    J
    srig.Z
    FIG.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1600635A3|1990-10-15|Piezoelectric transducer for yarn motion pickups of textile machines
    US4361777A|1982-11-30|Piezoelectric transducer for producing a signal depending on the tensile force of a textile thread
    US4110654A|1978-08-29|Device for monitoring the travel of yarn-like structures at a textile machine
    US4594891A|1986-06-17|Resonating rod
    US2524579A|1950-10-03|Detection of phenomena capable of setting up vibration
    US4133207A|1979-01-09|Device for detecting knot-like thick places in travelling textile threads
    US4471816A|1984-09-18|Optical weft sensor for a loom
    US3613065A|1971-10-12|Apparatus utilizing a vibratable member for detecting sustained tension in a running length or strand
    US4031924A|1977-06-28|Electronic equipment for monitoring yarn travel on a textile machine
    US4027232A|1977-05-31|Device for monitoring the travel of a yarn like structure utilizing the frictional electricity involved with said travel
    KR0133278B1|1998-04-16|Device for counting turns unwinding from weft feeders of weaving looms
    US4716764A|1988-01-05|Method and device for determining the cross-section of elongated objects using a sound field
    US4313472A|1982-02-02|Electronic device for monitoring the weft insertion on a gripper shuttle weaving machine comprising a color changer
    US3361314A|1968-01-02|Yarn guard for checking yarn travel in a textile machine
    US4381803A|1983-05-03|Electronic weft thread monitor
    JP3578154B2|2004-10-20|Loom having a device for detecting breakage of twine in a loom, particularly a heald frame, and a device for detecting breakage of yarn
    US4628847A|1986-12-16|Apparatus for thread monitoring
    CA1182899A|1985-02-19|Method and apparatus for determining the substanceamount or density of quantities of fibres
    US3970115A|1976-07-20|Device for monitoring the yarn travel in the shuttle of a shuttle loom
    RU2129090C1|1999-04-20|Thread movement control pickup for spinning and weaving looms
    GB1184583A|1970-03-18|Improvements in or relating to Weft Stop Motions on Looms.
    WO1992001622A1|1992-02-06|Detecting filamentary bodies
    SU1306988A1|1987-04-30|Yarn breaking sensor
    US5983955A|1999-11-16|Yarn feeding device having storage drum with light guide
    FR2662679A1|1991-12-06|DEVICE FOR NON-CONTACT INDIVIDUAL MONITORING OF WIRE-FORMED MATERIAL.
    同族专利:
    公开号 | 公开日
    JPS60112571A|1985-06-19|
    IT8323198V0|1983-10-07|
    US4605875A|1986-08-12|
    EP0139231A1|1985-05-02|
    EP0139231B1|1987-07-29|
    AT28617T|1987-08-15|
    IN161807B|1988-02-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3613065A|1970-03-03|1971-10-12|Lindly & Co Inc|Apparatus utilizing a vibratable member for detecting sustained tension in a running length or strand|
    DE2152907A1|1971-10-23|1973-04-26|Meissner & Eckrath Kg Mech Str|Thread breakage monitor - for textile machines with friction block and electroacoustic transducer|
    CH551922A|1972-11-21|1974-07-31|Loepfe Ag Geb|DEVICE FOR MONITORING RUNNING FAEDS.|
    CH580533A5|1974-07-12|1976-10-15|Loepfe Ag Geb|
    IT1054038B|1976-01-09|1981-11-10|Lanerossi Spa|METHOD AND DEVICES FOR THE AUTOMATIC DETECTION OF THE PRESENCE OR ABSENCE OF THE THREAD IN THE SPINNING MACHINES|
    EP0028425A1|1979-09-13|1981-05-13|"BARCO ELECTRONIC N.V." abbreviated into "Barco"|Electronic thread monitor|IT1218170B|1986-10-11|1990-04-12|Murata Machinery Ltd|PROCEDURE FOR WINDING WIRE IN AUTOMATIC WINDING MACHINE AND RELATED CONTROL DEVICE|
    JPS63211331A|1987-02-25|1988-09-02|Murata Mach Ltd|Device for detecting tension of yarn|
    DE3707875A1|1987-03-11|1988-09-22|Iro Ab|DEVICE FOR DETECTING A YARN MOVEMENT|
    US5136202A|1990-08-31|1992-08-04|Atochem North America, Inc|Material sensor|
    JPH04131681U|1991-05-16|1992-12-03|
    JPH11505896A|1995-06-02|1999-05-25|ズルツァー・リューティ・アクチェンゲゼルシャフト|An electrostatic weft monitoring device for a weaving machine with a series of openings|
    US5718854A|1996-09-27|1998-02-17|E. I. Du Pont De Nemours And Company|Detection of broken filaments|
    ES2154549B1|1998-05-20|2001-11-16|Pinter Sa|DEVICE FOR THE DETECTION OF BREAKS OF THREADS IN CONTINUOUS THREADING MACHINES.|
    KR100656799B1|2006-04-26|2006-12-13|최표|Warp weight structure for warp sensing apparatus of water jet loom|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT8323198U|IT8323198V0|1983-10-07|1983-10-07|TAKING ORGAN FOR SPOOLS OF YARN.|
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