发明授权
- 专利标题： Method and apparatus of monitoring the quality of a false twist textured yarn
- 专利标题（中）： 监测假捻加工纱质量的方法和装置
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申请号： US818511申请日： 1992-01-09
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公开(公告)号： US5440870A公开(公告)日： 1995-08-15
- 发明人: Bernd Neumann
- 申请人： Bernd Neumann
- 申请人地址： DEX Remscheid
- 专利权人： Barmag AG
- 当前专利权人： Barmag AG
- 当前专利权人地址： DEX Remscheid
- 优先权： DEX4101189.9 19910117; DEX4107951.5 19910313
- 主分类号： D02G1/02
- IPC分类号： D02G1/02 ; G01N33/36 ; D01H7/92 ; D01H13/22
摘要：
A method and apparatus for monitoring the quality of the yarn processed on a false twist texturing machine is disclosed, and which includes sensing the tension of the advancing yarn at a location immediately downstream of the false twist unit, and determining the coefficient of variation of the sensed tension. An error signal is generated whenever the coefficient of variation exceeds a predetermined upper limit and whenever the coefficient of variation drops below a predetermined lower limit. Also, an alarm signal is generated whenever the error signal exceeds the predetermined upper limit for a predetermined time, and whenever the error signal drops below the predetermined lower limit for a predetermined time, and the alarm signals are counted so as to provide an indication of the quality of the yarn.
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