• 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:
    The present invention relates to a method of compensating errors upon sliver density control in textile machines provided with a controlled drafting field, particularly drawframes, in which said errors are originated by dissimilar conduct of the sliver to be drafted upon scanning its density, due to different withdrawing speed and/or degree of draft. The method consists in performing corrective interventions on the basis of the known course of the error originated by dissimilar conduct of the sliver to be drafted, said interventions corresponding as to their magnitude to the predetermined error and being introduced with opposite polarity into the control system. The device for performing this method consists in interposing one function converter 7 between the measuring instrument 6 for the withdrawing speed of the sliver and the actual control system 5, and another function converter 9 between the measuring instrument 8 for the degree of draft and the actual control system 5. <IMAGE>
    公开号:SU1097726A1
    申请号:SU807771335
    申请日:1980-08-20
    公开日:1984-06-15
    发明作者:Войтех Шмайстрла；Зденек Стржибрны；Ярослав Минаржик
    申请人:Элитекс,Концерн Текстильного Машиностроения (Инопредприятие)；
    IPC主号:
    专利说明:

    The I strap refers to the linear density regulators of the tape on textile, mainly tape machines. The known method of controlling the linear density of the tape and the device for its implementation according to the USSR author's certificate No. 759629, cl. D 01 H 5/32, 1978. The known method consists in measuring the linear density of the tape after its stretching, compare it with the given value and change the stretching value according to the comparison result. The known device comprises an exhaust device connected to the output of the regulator No.1t of the connector connected by a first input to the linear density sensor leite. A disadvantage of the known method and device is the error of regulation, caused by the dependence of the output signal of the sensor on the speed of movement of the ribbon in the sensor and on the magnitude of the ribbon extraction in the hood, which reduces the control accuracy. The purpose of the invention is to improve the accuracy of regulation. This goal is achieved in that according to the method of adjusting the linear density of the tape, which consists in measuring the linear density of the tape after stretching it, comparing it with the target and changing the stretch size of the tape according to the result of the comparison, measuring the release speed of the tape and stretching, and changing the stretching value is carried out taking into account the tape discharging speed and stretching size. A device for carrying out the method, comprising an exhaust device connected to an output of an exhaust regulator connected to a linear density sensor by a first input, has a tape speed sensor, an exhaust sensor and functional converters, and the outputs of functional converters are connected respectively to the second and third the inputs of the regulator of the exhaust, and the inputs, respectively, to the speed sensor of the tape outlet and to the exhaust sensor. The drawing shows the structures
    on the device diagram.
    A device for adjusting the facet density of a tape contains testically, for example, using a gravimetric method. At the output of the functional conversion 6-hitch device 1 with pairs of exhaust rollers 2 for stretching the belt 3. A linear density sensor 4 connected to the inlet 51 of the exhaust regulator 5, a belt release speed sensor including a pair of rollers (not shown), installed at the sensor A of the linear density of the tape and kinematically connected with the tachogenerator 6 connected to the input of the functional converter 7 of the output voltage of the tachogenerator 6 into the correction signal for the speed of the tape's discharge, and the tachogenerator 8, kinematically connected with a pair of exhaust rollers 2 and a voltage of the tachogenerator 8 connected to the input of the functional converter 9 to a correction signal according to the magnitude of the belt draw. The linear density reference signal is connected to the input 52 of the controller 5, the inputs 53 and 54 of which are connected to the outputs of the functional converters 7 and 9, respectively. The output 55 of the controller 5 is connected with a means of changing the exhaust (not shown) of the exhaust device 1. The device works in the following way . The change in the magnitude of the exhaust in the exhaust device 1 is made by varying the speed of rotation of the bee of the exhaust rollers 2, kinematically associated with the tachogenerator 8, while maintaining the same speed of rotation of the other pair of exhaust rollers 2. Consequently, the signal UTU of the tachogenerator 8, depending on the speed rotation of an adjustable pair of rollers 2, is a measure of the amount of stretching of the tape 3. The UTP signal is fed to the input of the functional converter 9, into which the function () of the error Op of the signal Ug of the sensor 4 has been entered () minute quantities of feed and draw ratio. This error can be caused, for example, by a different degree of parallelization of the fibers in the tape at different stretches, when in order to obtain the same linear density of the tape at the regulator output and different linear densities of the product, it is necessary to significantly change the stretch. The function (Ufp) can be determined by the transducer 9, a signal is generated that corresponds to the opposite sign of the error 8p of the sensor 4 at the measured exhaust value. This signal is fed to the input 54 of the regulator 5 of the exhaust and is used as a correction correction in the regulation.
    The change in the discharge speed Vg of the tape is determined by the tachogenerator 6, the output signal U of which, corresponding to the Vg value, is fed to the functional converter 7. Function 6, the functional 6 (Ufv) of the error 8 and sensor 4 signal is pre-entered into the functional converter 7 release tape. This function can also be determined experimentally. At the output of the functional converter 7, a signal is generated, the magnitude
    which corresponds to the opposite sign of the error of the output signal and sensor 4 at the current value of the exhaust rate for a given
    material being processed. The signal of the functional converter 7 is fed to the input 53 and is used for the correction of the regulating effect on the exhaust device 1.
    ,, In controller 5, the linear density reference signal U. is compared with the signal from sensor 4, loaded with errors SP and 8, by the magnitude of the exhaust and the magnitude of the discharge velocity, having
    view U iSvjiSp, and with corrective amendments -By and-BP. As a result of the comparison, the regulator 5 generates at the output 55 a regulating action Y for changing the stretching of the tape in the exhaust device 1.
    The economic effect of the application of the inventions is achieved by increasing the regulation accuracy.
    权利要求:
    Claims (2)
    [1]
    Ϊ. A method of regulating the linear density of the tape, mainly on a tape machine, which consists in measuring the linear density of the tape after it is drawn, comparing it with a predetermined one and changing the amount of tape drawing according to the comparison result, characterized in that, in order to increase the accuracy of regulation, measure the speed of release of the tape and the amount of extraction, and the change in the amount of extraction is carried out taking into account the speed of release of the tape and the amount of extraction.
    [2]
    2. A device for regulating the linear density of the tape, mainly on a tape machine, containing an exhaust device connected to the output of the exhaust regulator connected by the first input to the linear density sensor of the tape, characterized in that, in order to improve the accuracy of regulation, it has a tape speed sensor , a sensor, hoods and functional converters, the outputs of the functional converters connected respectively to the second and third inputs of the hood controller, and the inputs respectively to the sensor scab release tape and to extract the sensor.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1097726A1|1984-06-15|Method and apparatus for controlling linear density of sliver
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    US4731909A|1988-03-22|Apparatus for controlling the feed roller of a fiber tuft feeder
    GB1594432A|1981-07-30|Production of a continuous substantially uniform fibre web
    CN1043792C|1999-06-23|Method and device for regulating the draw of a drawing unit
    ES8301507A1|1982-12-01|Method and device for regulating the unevenness of a sliver.
    US4393701A|1983-07-19|Yarn tester system
    GB2192908A|1988-01-27|Improvements in and relating to setting and operation of a carding machine
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    RU1773962C|1992-11-07|Method of adjusting tape linear density
    SU1174909A1|1985-08-23|Device for controlling two connected parameters
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    SU1142401A1|1985-02-28|Method of optimization of yarn draft and yarn draft optimizer
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    SU648300A1|1979-02-25|Apparatus for supplying control action upon the speed of rolling-drawing mill rolls
    同族专利:
    公开号 | 公开日
    GB2061338B|1983-05-18|
    CS210918B1|1982-01-29|
    RO78471A|1984-08-17|
    IT8024938D0|1980-09-26|
    PL126917B1|1983-09-30|
    DE3035196A1|1981-04-16|
    RO78471B|1984-09-30|
    IT1209354B|1989-07-16|
    PL226949A2|1981-06-05|
    DD158179A3|1983-01-05|
    GB2061338A|1981-05-13|
    HU191808B|1987-04-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2448512A1|1974-10-11|1976-04-22|Zinser Textilmaschinen Gmbh|Sliver fineness control process - has structured control times according to sliver speed between control and monitoring points|
    US4163927A|1977-05-04|1979-08-07|Fiber Controls Corporation|Auto-leveler circuit|EP0192835B1|1985-02-15|1989-04-26|Maschinenfabrik Rieter Ag|Apparatus for the continuous mass control of a fibre ribbon|
    DE3635341A1|1986-10-17|1988-04-28|Zinser Textilmaschinen Gmbh|DEVICE FOR REGULATING THE DISTANCE OF A RIBBON IN A TEXTILE MACHINE|
    CH675885A5|1988-09-21|1990-11-15|Rieter Ag Maschf|
    US5230125A|1988-12-22|1993-07-27|Rieter Machine Works, Ltd.|Combing machine and process for forming an even combed sliver|
    EP0412448B1|1989-08-11|2000-10-11|Maschinenfabrik Rieter Ag|Drafting arrangement with meshed control|
    US4974296A|1990-02-23|1990-12-04|Platt Saco Lowell Corporation, Inc.|Apparatus for correcting irregularities in a textile strand|
    DE59107714D1|1990-09-26|1996-05-30|Rieter Ag Maschf|Method for correcting a determined measurement signal for the mass of a sliver on a regulating drafting system for slivers with an outlet measuring element|
    US5152033A|1991-07-15|1992-10-06|Myrick-White, Inc.|Textile apparatus/method for reducing variations in silver weight|
    DE4131418A1|1991-09-20|1993-03-25|Stahlecker Fritz|Drawing unit monitors - have common current circuit to be broken if monitor is displaced, by build=up of wound fibre material|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CS652979A|CS210918B1|1979-09-27|1979-09-27|Fault remedy at control of sliver density on textile machines|
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