EP1225149B1 - Vorrichtung an einem Direkt-Rovingwickler zum berührungslosen Erfassen des Istdurchmessers der Rovingspule und Direkt-Rovingwickler mit einer solchen Vorrichtung - Google Patents

Vorrichtung an einem Direkt-Rovingwickler zum berührungslosen Erfassen des Istdurchmessers der Rovingspule und Direkt-Rovingwickler mit einer solchen Vorrichtung Download PDF

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Publication number
EP1225149B1
EP1225149B1 EP02001051A EP02001051A EP1225149B1 EP 1225149 B1 EP1225149 B1 EP 1225149B1 EP 02001051 A EP02001051 A EP 02001051A EP 02001051 A EP02001051 A EP 02001051A EP 1225149 B1 EP1225149 B1 EP 1225149B1
Authority
EP
European Patent Office
Prior art keywords
package
roving
diameter
winder
ascertained
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02001051A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1225149A3 (de
EP1225149A2 (de
Inventor
Rainer Uhde
Ulrich Singer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dietze and Schell Maschinenfabrik GmbH and Co KG
Original Assignee
Dietze and Schell Maschinenfabrik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dietze and Schell Maschinenfabrik GmbH and Co KG filed Critical Dietze and Schell Maschinenfabrik GmbH and Co KG
Publication of EP1225149A2 publication Critical patent/EP1225149A2/de
Publication of EP1225149A3 publication Critical patent/EP1225149A3/de
Application granted granted Critical
Publication of EP1225149B1 publication Critical patent/EP1225149B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
    • B65H59/384—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension using electronic means
    • B65H59/385—Regulating winding speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
    • B65H63/082—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle responsive to a predetermined size or diameter of the package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/50—Use of particular electromagnetic waves, e.g. light, radiowaves or microwaves
    • B65H2557/51—Laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a device on a direct roving winder for contactless detection of the actual diameter of the roving bobbin, wherein the direct roving winder further comprises a machine frame with at least one winding spindle for producing one or more roving bobbins and a thread laying device.
  • the invention further relates to the use of such a device in a Rovingwickler having at least one of the machine frame abracrating winding spindle and a pivotally mounted on the machine frame thread laying device, wherein the bobbin diameter is determined and the speed of the winding spindle is controlled in dependence on the determined bobbin diameter.
  • the invention relates to the use of such a device in a device for spinning glass fibers, in which a number of glass fibers are spun by means of a spinneret and are wound up by means of a direct roving to a roving bobbin.
  • the diameter of the bobbin growing during winding is detected continuously and the speed of the winding spindle and the movement of the thread laying device are controlled as a function of the detected bobbin diameter.
  • a measuring device for continuously determining the diameter of winding bodies in warper machines which has a sensor which is designed as a wave transmitter / receiver, wherein from the time difference between the transmission of a wave pulse and the reception of the Echo pulse of the diameter of the bobbin is determined.
  • a similar working device for determining a warp beam diameter is known from DE-C-37 34 095, wherein the distance is determined by triangulation.
  • JP Patent Abstracts of Japan 07 257 819 it is known, the remaining amount of cooking, which is located on a spool, by means of a sensor that measures the distance between the coil surface and the sensor. From JP Patent Abstracts of Japan 00 185 879 it is known to determine the coil diameter by means of such a distance sensor and to control the tension exerted on the thread as a function of the determined coil diameter.
  • the invention has for its object to improve the titer uniformity within a roving coil.
  • the device for contactless detection of the actual diameter includes a laser sensor having a transmitter and a receiver for laser radiation, wherein by means of the radiation from the sensor to the coil surface and back to the receiver, the distance of the laser sensor is determined by the coil surface and from this the instantaneous diameter or actual diameter of the roving bobbin is determined, and that the laser sensor is arranged in a housing with an opening for the passage of the laser beam, wherein between the laser sensor and the inside of the housing a free space is present, is introduced into the compressed gas that exits through the opening.
  • the speed of the winding spindle and the movement of the thread laying device can be controlled so that rovings of high uniformity are spun.
  • the directly measured actual diameter of the roving bobbin is used to control the speed of the winding spindle with the aim of producing rovings of very uniform titer.
  • the diameter of each roving bobbin produced on the winding spindle is consequently detected by means of a separate device according to the invention, and the diameter values determined for each winding spindle are compared with each other and a control signal is generated when the diameter difference exceeds a threshold value.
  • the signals from the sensors also permit yarn breakage control by comparing the growth of the roving bobbins with a minimum growth rate of the bobbins.
  • the signals of the sensor for controlling the spinneret temperature in order to counteract occurring titer fluctuations.
  • the time course of the actual diameter ie the diameter growth taken into account.
  • Too rapid growth of the actual diameter of the coil is a consequence of too high a nozzle throughput (Bushing amalgam) and thus a too high titer.
  • the spinning nozzle temperature By reducing the spinning nozzle temperature, the nozzle throughput and thus the titer can be reduced.
  • the relationship between diameter growth and spinneret temperature depends on a variety of parameters and must be determined empirically for each plant.
  • the sensors may be stationarily attached to the machine frame or mounted on the yarn laying device so that they move with it.
  • the laser sensor can determine the distance to the coil surface in a known manner from the transit time of the radiation from the sensor to the coil surface and back to the receiver. Taking into account the dimensions and design data of the direct roving winder and the known position of the laser sensor on the direct roving winder, the actual diameter of the roving bobbin can be determined therefrom.
  • the distance of the laser sensor from the coil surface is determined according to the known triangulation principle.
  • the laser beam impinges on the coil surface as a small point and the receiver detects the position of that point by determining the angle at which the radiation returning from the point hits the receiver. Since the distance between transmitter and receiver and the angle at which the radiation is emitted by the receiver are fixed quantities, the distance of the laser sensor from the coil surface can be calculated from this.
  • the receiver inside the sensor is a photodiode array or a PSD.
  • the photodiode array is read out by a built-in microcontroller. From the distribution of the radiation returning from the point on the coil surface on the photodiode line, the microcontroller calculates exactly the angle and from this the distance to the coil surface. Suitable is a laser distance sensor OADM TM from WayCon Positionsmesstechnik GmbH, Dreischttingstr. 8, 82008 Unterhaching, Germany.
  • the laser sensor is arranged in a housing having an opening for the passage of the laser beam, wherein gas is blown in the space between the laser sensor and the housing, which can emerge from the opening. This prevents the penetration of these substances and particles and their setting on the optics of the laser sensor.
  • the opening is provided with a header, which has a drip edge facing away from the opening.
  • a header which has a drip edge facing away from the opening.
  • the general structure of the Rovingwicklers is of conventional design.
  • a spool turret 12 is rotatably mounted.
  • the Spulrevolver 12 is driven by an electric motor 14 and in it are two winding spindles 16, 18 offset by 180 ° to each other eccentrically rotatably cantilevered.
  • the winding spindle 16 is in the winding position, while the winding spindle 18 is in the waiting position.
  • a thread-laying or traversing device 20 is articulated by means of a pivoting arm 22 on the machine frame 10.
  • the drive for the pivoting of the thread laying device 20 and also the drive for the winding spindles 16, 18 is located within the machine frame 10th
  • the yarn laying device 20 has two yarn guides 30, 32, which guide the rovings back and forth in a known manner within the traverse stroke, so that the rovings are deposited and wound in a predetermined pattern on the spools 26, 28.
  • the yarn guides 30, 32 are located at the lowest possible constant distance from the surface of the coil.
  • the Fadenvorlege founded 20 is therefore pivoted away according to the coil growth of the winding spindle 16, wherein the distance to the coil surface is controlled so that the rovings 24 is deflected by the iridescent yarn guides 30, 32 only in the direction of the axis of the winding spindles 16, 18, but not perpendicular to so that in the views of Fig. 1, the rovings 24 run in a straight line.
  • the growth of the coils 26, 28 is determined by means of sensors 34, wherein for each coil 26, 28 a separate sensor 34 is provided.
  • the sensors 34 are mounted on an arm 36 which protrudes outside of the bearing of the winding turret 12 parallel to the axis of the winding spindles 16, 18 of the machine frame 10.
  • the sensors 34 operate in a known manner according to the echo principle. They contain a laser transmitter and a receiver for electromagnetic waves, eg laser pulses in the infrared range.
  • the laser beams 35 are directed substantially perpendicular to the coil surface. From the duration of the radiation pulses 35 from the transmitter to the coil surface and back to the receiver, the distance between the sensor and the coil surface determined.
  • a bobbin change can be initiated, in which the Spulrevolver 12 is rotated by 180 °, so now the winding spindle 18 is brought into the winding position.
  • laser distance sensors that work according to the triangulation principle.
  • the laser sensors 34 ' may also be mounted on the yarn laying device 20 so as to be pivoted therewith.
  • the instantaneous diameter of the coils 26, 28 is then determined from the position of the pivot arm 22 and the distance to the coil surface determined by the laser sensors 34 '.
  • the uniformity of the titer can be monitored based on the coil growth data, and titer variations can be counteracted by slightly lowering the spinneret temperature at too high a titer and slightly increasing it at a too low titer.
  • each laser sensor 34 is arranged by means of an angle 38 in a housing 40, wherein in the housing an opening or a gap 42 for the passage of the laser beam 35 and between the optics 44 of the laser sensor 34 and the opening 42, a free space 46 is present.
  • the free space 46 may extend around the entire laser sensor 34 such that there is a gap between the laser sensor 34 and the inside of the housing 40.
  • compressed gas eg compressed air
  • a compressed gas source not shown, which then exits the opening 42 and thereby prevents the ingress of contaminants, ie water, sizing or glass fiber flight.
  • an overpressure of 5 bar of the compressed gas is sufficient.
  • a header 50 is arranged, which surrounds the opening 42 and prevents contamination.
  • the attachment is a plate having an opening for the laser beam aligned with the opening 42 and having on both sides of the opening a forwardly projecting Abweisblende or plate 52. On the side, which is to be reckoned with particularly heavy contamination, the Abweisblende 52 can be extended. The front end of Abweisblende 52 is pointed, so that adhering contaminants can easily drain.
  • the attachment 50 is screwed to the front of the housing 40 so that it is easy to disassemble and can be cleaned if necessary.
  • the optic 44 of the sensor 34 can be cleaned through the opening 42.
  • the control device can be designed so that the signals of the laser sensor 34 are filtered in such a way that cleaning of the attachment 50 in the mounted state during normal operation by hand is possible without this being interpreted as an error signal.
  • FIGS. 4 and 5 show further embodiments of the attachment 50, wherein in Fig. 4, the opening in the attachment 50 widens outwardly and has a sharp edge which is surrounded by an annular groove 54.
  • the attachment 50 is provided with a hollow chamber 56 in which any penetrating impurities are collected. The edge of the opening in the front of the hollow chamber 56 is tapered again and surrounded by an annular groove 54.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
EP02001051A 2001-01-23 2002-01-21 Vorrichtung an einem Direkt-Rovingwickler zum berührungslosen Erfassen des Istdurchmessers der Rovingspule und Direkt-Rovingwickler mit einer solchen Vorrichtung Expired - Lifetime EP1225149B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20101126U DE20101126U1 (de) 2001-01-23 2001-01-23 Vorrichtung an einem Direkt-Rovingwickler zum berührungslosen Erfassen des Istdurchmessers der Rovingspule und Direkt-Rovingwickler mit einer solchen Vorrichtung
DE20101126U 2001-01-23

Publications (3)

Publication Number Publication Date
EP1225149A2 EP1225149A2 (de) 2002-07-24
EP1225149A3 EP1225149A3 (de) 2003-05-21
EP1225149B1 true EP1225149B1 (de) 2006-05-03

Family

ID=7951942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02001051A Expired - Lifetime EP1225149B1 (de) 2001-01-23 2002-01-21 Vorrichtung an einem Direkt-Rovingwickler zum berührungslosen Erfassen des Istdurchmessers der Rovingspule und Direkt-Rovingwickler mit einer solchen Vorrichtung

Country Status (6)

Country Link
US (1) US6719234B2 (cs)
EP (1) EP1225149B1 (cs)
JP (1) JP3715927B2 (cs)
AT (1) ATE325073T1 (cs)
CZ (1) CZ301393B6 (cs)
DE (2) DE20101126U1 (cs)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20051929A1 (it) * 2005-10-13 2007-04-14 Savio Macchine Tessili Spa Dispositivo e procedimento per la misurazione di precisioni della metratura del filo avvolto su una rocca
JP5862024B2 (ja) * 2011-03-14 2016-02-16 東レ株式会社 炭素繊維パッケージの巻密度測定装置、巻密度測定方法、ならびに炭素繊維パッケージ巻き上げ工程管理方法
CZ307263B6 (cs) * 2016-11-21 2018-05-02 Rieter Cz S.R.O. Zařízení pro sledování průvěsu přástu před navíjecím zařízením přípravárenského stroje pro výrobu přástu
CN113046853A (zh) * 2021-05-07 2021-06-29 苏州金泉新材料股份有限公司 化纤叠丝机
CN113830621A (zh) * 2021-09-16 2021-12-24 泰州市光明电子材料有限公司 一种聚四氟乙烯纤维加工生产用收卷设备

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Also Published As

Publication number Publication date
DE20101126U1 (de) 2001-04-19
JP2002234669A (ja) 2002-08-23
EP1225149A3 (de) 2003-05-21
DE50206606D1 (de) 2006-06-08
CZ301393B6 (cs) 2010-02-17
US6719234B2 (en) 2004-04-13
JP3715927B2 (ja) 2005-11-16
US20020109031A1 (en) 2002-08-15
CZ2002277A3 (cs) 2002-09-11
EP1225149A2 (de) 2002-07-24
ATE325073T1 (de) 2006-06-15

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