EP0891435A1 - Device for measuring the thickness and/or unevenness of wadding or non-wovens - Google Patents

Device for measuring the thickness and/or unevenness of wadding or non-wovens

Info

Publication number
EP0891435A1
EP0891435A1 EP97904981A EP97904981A EP0891435A1 EP 0891435 A1 EP0891435 A1 EP 0891435A1 EP 97904981 A EP97904981 A EP 97904981A EP 97904981 A EP97904981 A EP 97904981A EP 0891435 A1 EP0891435 A1 EP 0891435A1
Authority
EP
European Patent Office
Prior art keywords
thickness
measuring
transmission element
guide
wadding
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.)
Granted
Application number
EP97904981A
Other languages
German (de)
French (fr)
Other versions
EP0891435B1 (en
Inventor
François BAECHLER
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.)
Zellweger Luwa AG
Original Assignee
Zellweger Luwa AG
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 Zellweger Luwa AG filed Critical Zellweger Luwa AG
Publication of EP0891435A1 publication Critical patent/EP0891435A1/en
Application granted granted Critical
Publication of EP0891435B1 publication Critical patent/EP0891435B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G31/00—Warning or safety devices, e.g. automatic fault detectors, stop motions
    • D01G31/006—On-line measurement and recording of process and product parameters
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/22—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to presence of irregularities in running material

Definitions

  • the invention relates to a device for measuring the thickness and / or the non-uniformity of wadding or nonwovens referred to below as a roll, with a guide for the roll and with a thickness sensor which presses against the guide and is movable relative thereto, the position of which is a measure represents the thickness and / or the unevenness of the winding
  • the thickness sensor is formed by a plurality of individual sensors arranged next to one another and individually adjustable by the winding, which extend across the width of the winding. There is an electrical sensor in each individual sensor Measuring device arranged for the detection of the position of the individual chair for guidance.
  • signals for the position of each individual chair are available which are capable of recognizing differences in the thickness of the roll, which exist across the width of the roll
  • a disadvantage of this known device is that the arrangement of an electrical measuring device in each individual sensor is complex and expensive. If the measuring device works with strain gauges, each individual measuring device must be carefully calibrated before taking it into operation, which is a complex process
  • an individual sensor is provided with a transmission element which converts the deflections of the individual sensor in one direction into a path signal which is in a other direction is available.
  • the signals which correspond to the deflections of a plurality of individual sensors can thus be added and fed to a single and common position measuring system
  • the deflections of all individual sensors are added at the same time, so that a signal is produced which represents the average thickness of the winding. This signal therefore no longer has to be determined by electrical processing of individual signals.
  • the device can be designed in a simple manner for one, two or more individual sensors, or can subsequently be expanded to include several individual sensors.
  • a path measuring system can be provided in any direction that can be selected.
  • FIG. 1 shows a schematic illustration of a thickness sensor according to the invention in a longitudinal section
  • FIG. 2 shows a schematic illustration of a thickness sensor according to FIG. 1 in cross section
  • FIG. 3 shows a schematic illustration of a thickness sensor with several measuring rollers in longitudinal section
  • Figures 4, 5 and 6 each have another embodiment of the cross section in cross section
  • FIG. 7 is a schematic representation of the device on a card 1 shows a device according to the invention.
  • a roll 1 can be seen which rests on a fixed guide 2 and which preferably appears as a loose fiber structure such as cotton wool or a fleece, which is referred to below as a roll.
  • a thickness sensor 3 lies on the roll 1 or even immersed, which in this case is designed in particular as a hollow measuring roller 3 '.
  • the inner surface 4 of the measuring roller 3' has two angular grooves 5, 6 which are used for lateral guidance of pairs of rollers 7, 8 which are located on the measuring roller 3 "support
  • the pairs of rollers 7, 8 have axes of rotation 9, 10, which are mounted in a carriage 11.
  • Two further deflection rollers 15, 16 are mounted in a beam 17 which projects beyond end faces 18, 19 of the measuring roller 3 'and into one end 20 of the transmission element 14 is fixedly mounted
  • the other end 21 of the transmission element 14 is connected to a displacement measuring system 22 and moves in the direction of an arrow 23 when the measuring roller 3 'is moved towards the guide 2 or away from it.
  • the arrow 23 thus indicates a direction which is inclined or angled toward a movement of the thickness sensor 3, as indicated by an arrow 24.
  • the displacement measuring system 22 also comprises a spring 22b, an adjustable bearing 22c for the spring 22b on the beam 17 and a coupling element 22d for the transmission element 14, which also serves as a measuring surface for the actual displacement measuring element 22a. It can also be seen here that a movement of the measuring roller 3 'in the direction of the arrow 24 due to the formation of a loop in the Transmission element 14 results in a twice as large deflection of end 21 in the area of displacement measuring system 22 Doubling of the measurement accuracy can be achieved.
  • the contact force of the thickness sensor 3 against the guide 2 is generated (in addition to gravity) by the spring 22b
  • FIG. 2 shows a cross section through the device shown in FIG. 1. Then one can again see the pairs of rollers 7, 8, the carriage 11 with the support 12 and the deflection roller 13, and the bar 17 with a deflection roller 15, 16 and an axis 25 for their storage in the beam 17
  • the guide 2 essentially forms a plane here 3 shows a device with three thickness sensors 26, 27, 28, all of which are mounted here on a common beam 29 above a guide 30.
  • the structure of the thickness sensors 26, 27 28 is the one that is already known from FIGS. 1 and 2 However, all the thickness sensors 26, 27, 28 have a common transmission element 31 and a common position measuring system 32, which is attached to the bar 29 on one side of the three thickness sensors 26, 27, 28.
  • the bar 29 can be, for example, in a known manner, not shown here and be connected to the guide 30, lean on it or be mounted in some other way, in particular stationary and at a fixed distance from the guide.
  • the transmission element 31 here crosses several measuring rollers between the position measuring system 32 and a fixed bearing 51
  • a fixed bearing 32c for a spring 32b is also provided in the path measuring system 32 and is connected to the transmission via a coupling element 32d gs ⁇ element 31 is connected.
  • the bearing 32c is displaceable and adjustable along the beam 29 so that the tensioning force of the spring 32b and thus also the pressing force of all the provided thickness sensors 26, 27 28 can be adjusted together
  • FIG. 4 again shows the use of a thickness sensor 3 according to the invention above a stationary and flat guide 2 with a winding 1 which is applied in the direction of an arrow 33 by means not shown here and thus drives the measuring roller 3 'in the area of the thickness sensor 3 the winding 1 experiences a compression so that its height increases to an amount a vemn
  • Figure 5 shows a Dickenfuhler 3 as it is angetneben in the direction of an arrow 35 through a round leadership here a roller 34, can also be arranged here results in a ⁇ Ver seal of the package 1 to the amount a
  • a thickness sensor 3 shows a thickness sensor 3 as it can be arranged over a multi-part guide here consisting of two rollers 36 and 37 which are indicated in the direction of arrows 38.
  • a 7 shows the use of a thickness sensor 39 according to the invention in the vicinity of a card 40 with a downstream can system 41 for depositing carded tape 42.
  • the card and cans have a common mechanical or electrical device 43 and a monitoring and control system 44.
  • the thickness sensor can 39 are provided in the area of a feed roller 45 at the entrance to the card 40 and are connected to the monitoring and control system 44 via a line 46
  • the mode of operation of the device according to the invention is as follows: Due to the different thickness of the moving roll 1, the measuring roller 3 'is lifted more or less strongly from the guide 2. Movement of the measuring roller 3' over the rollers 7, 8, the carriage 11, Support 12 and the deflecting roller 13 are transferred to the transmission element 14, which thereby enlarges or reduces a loop which it forms in the regions of the deflecting rollers 13, 15, 16. This produces a displacement signal with which an encoder 47 in the displacement measuring system 22 more or is deflected less, which provides the information about the thickness or the uniformity of the winding 1 Instead of the encoder 47, the path measuring system 22 can also work without contact
  • the deflections of three loops 48, 49, 50 add up such that a signal results at that end of the transmission element which is attached to the path measuring system 32, that of the average thickness of the winding 1 corresponds, since all loops 48, 49 50 assume an average deflection even with a zero thickness of the winding 1, very narrow thicknesses on one measuring roller are offset with larger thicknesses on another measuring roller.
  • the displacement measuring system 32 must also be calibrated accordingly

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The invention concerns a device for measuring the thickness and/or unevenness of wadding or non-wovens. The device has a guide element (30) for the wadding or non-wovens and a thickness sensor (26, 27, 28) which presses the wadding or non-wovens against the guide element and can move relative to the latter, the position of the sensor providing a measure of the thickness and/or unevenness of the wadding or non-wovens. To achieve a simpler and cheaper design without sacrificing measurement accuracy, an individual sensor is provided with a translation element (31) which converts the deflections of the individual sensor in one direction into a path signal available in another direction. This allows signals corresponding to the deflections of several individual sensors to be added together and applied to a single common path measurement system (32).

Description

VORRICHTUNG ZUM MESSEN DER DICKE UND/ODER DER UNGLEICHMASSIGKEIT VON WATTEN ODER VLIESEN DEVICE FOR MEASURING THE THICKNESS AND / OR UNEQUALITY OF WADDING OR FLEECE
Die Erfindung betrifft eine Vomchtung zum Messen der Dicke und/oder der Ungleichmassigkeit von nachfolgend als Wickel bezeichneten Watten oder Vliesen, mit einer Führung für den Wickel und mit einem diesen gegen die Fuhrung druckenden und relativ zu dieser bewegbaren Dicken- fuhler, dessen Stellung ein Mass für die Dicke und/oder die Ungleichmassigkeit des Wickels darstelltThe invention relates to a device for measuring the thickness and / or the non-uniformity of wadding or nonwovens referred to below as a roll, with a guide for the roll and with a thickness sensor which presses against the guide and is movable relative thereto, the position of which is a measure represents the thickness and / or the unevenness of the winding
Eine solche Vomchtung ist bereits aus der EP-A-0467117 bekannt Dabei ist der Dickenfuhler durch eine Mehrzahl von nebeneinander angeordneten und durch den Wickel einzeln verstell¬ baren Einzelfuhlern gebildet, die sich über die Breite des Wickels erstrecken In jedem Einzelfuh- ler ist eine elektπsche Messvomchtung für die Erfassung der Stellung des Einzelfuhlers zur Führung angeordnet Damit stehen Signale für die Stellung jedes Einzelfuhlers zur Verfugung, die es ertauben, Unterschiede in der Dicke des Wickels, die über die Breite des Wickels gesehen bestehen, zu erkennenSuch a device is already known from EP-A-0467117. The thickness sensor is formed by a plurality of individual sensors arranged next to one another and individually adjustable by the winding, which extend across the width of the winding. There is an electrical sensor in each individual sensor Measuring device arranged for the detection of the position of the individual chair for guidance. Thus, signals for the position of each individual chair are available which are capable of recognizing differences in the thickness of the roll, which exist across the width of the roll
Ein Nachteil dieser bekannten Vomchtung besteht dann, dass die Anordnung einer elektπschen Messvomchtung in jedem Einzelfuhler aufwendig und teuer ist Arbeitet die Messvomchtung mit Dehnmessstreifen, so muss jede einzelne Messvomchtung vor der Inbetπebnahme sorgfaltig geeicht werden, was ein aufwendiges Verfahren istA disadvantage of this known device is that the arrangement of an electrical measuring device in each individual sensor is complex and expensive. If the measuring device works with strain gauges, each individual measuring device must be carefully calibrated before taking it into operation, which is a complex process
Es ist deshalb eine Aufgabe der vorliegenden Erfindung, wie sie in den Patentansprüchen ge¬ kennzeichnet ist, eine solche Vomchtung zu schaffen, die einfacher und billiger ist, ohne dass Einbussen bei der Qualität der Messungen hingenommen werden müssenIt is therefore an object of the present invention, as it is characterized in the claims, to provide such a device which is simpler and cheaper, without having to accept losses in the quality of the measurements
Dies wird dadurch erreicht, dass ein Einzelfuhler mit einem Ubertragungselement versehen wird, das die Auslenkungen des Einzelfuhlers in einer Richtung in ein Wegsigπal umsetzt, das in einer anderen Richtung zur Verfügung steht. Damit können die Signale, die Auslenkungen mehrerer Einzelfuhler entsprechen, addiert und einem einzigen und gemeinsamen Wegmesssystem zu¬ geführt werdenThis is achieved in that an individual sensor is provided with a transmission element which converts the deflections of the individual sensor in one direction into a path signal which is in a other direction is available. The signals which correspond to the deflections of a plurality of individual sensors can thus be added and fed to a single and common position measuring system
Neben dem einfacheren Aufbau einer solchen Vorrichtung ergibt sich der weitere Vorteil, dass gleichzeitig die Auslenkungen aller Einzelfuhler addiert werden, so dass ein Signal entsteht, das die mittlere Dicke des Wickels darstellt. Somit muss dieses Signal nicht mehr durch elektrische Verarbeitung von Einzelsignalen ermittelt werden. Die Vomchtung kann auf einfache Weise für einen, zwei oder mehrere Einzelfuhler ausgelegt oder auch nachträglich auf mehrere Einzelfuhler erweitert werden. Zudem kann ein Wegmesssystem in einer beliebig wählbaren Richtung a- rbeitend vorgesehen sein. Beim Einsatz der erfindungsgemassen Vomchtung in einer Karde mit offenem Regelkreis, kann diesem direkt ein über die Breite gemittelter Wert für die Dicke des Wickels zugeführt werden, was eine genauere Regelung ermöglicht und zu einer verbesserten Gleichmassigkeit des Bandes am Auslauf der Karde fuhrtIn addition to the simpler construction of such a device, there is the further advantage that the deflections of all individual sensors are added at the same time, so that a signal is produced which represents the average thickness of the winding. This signal therefore no longer has to be determined by electrical processing of individual signals. The device can be designed in a simple manner for one, two or more individual sensors, or can subsequently be expanded to include several individual sensors. In addition, a path measuring system can be provided in any direction that can be selected. When using the device according to the invention in a card with an open control circuit, a value for the thickness of the roll averaged over the width can be fed directly to it, which enables more precise control and leads to an improved uniformity of the strip at the card outlet
Nachstehend wird die Erfindung anhand von Ausführungsbeispielen und Zeichnungen näher erläutert Es zeigen:The invention is explained in more detail below on the basis of exemplary embodiments and drawings, in which:
Figur 1 eine schematische Darstellung eines erfindungsgemassen Dickenfühlers in einem Längs¬ schnitt,FIG. 1 shows a schematic illustration of a thickness sensor according to the invention in a longitudinal section,
Figur 2 eine schematische Darstellung eines Dickenfühlers gemäss Fig. 1 im Querschnitt,FIG. 2 shows a schematic illustration of a thickness sensor according to FIG. 1 in cross section,
Figur 3 eine schematische Darstellung eines Dickenfuhlers mit mehreren Messwalzen im Längs¬ schnitt,FIG. 3 shows a schematic illustration of a thickness sensor with several measuring rollers in longitudinal section,
Figuren 4, 5 und 6 je eine weitere Ausführung des Vomchtung im Querschnitt undFigures 4, 5 and 6 each have another embodiment of the cross section in cross section and
Figur 7 eine schematische Darstellung der Vomchtung an einer Karde Fig 1 zeigt eine erfindungsgemässe Vomchtung Dabei erkennt man einen Wickel 1 , der auf einer festen Fuhrung 2 aufliegt und der vorzugsweise als loses Fasergebilde wie z B Watte oder ein Vlies erscheint, das nachfolgend als Wickel bezeichnet wird Ein Dickenfuhler 3 ist auf dem Wickel 1 aufliegend oder sogar eintauchend vorgesehen, der hier insbesondere als hohle Mess¬ walze 3' ausgebildet ist Die Innenflache 4 der Messwalze 3' weist zwei πngformige Nuten 5, 6 auf, die zur seitlichen Fuhrung von Rollenpaaren 7, 8 dienen, die sich auf der Messwalze 3" abstutzen Die Rollenpaare 7, 8 weisen Drehachsen 9, 10 auf, die in einem Wagen 11 gelagert sind Dieser weist eine Stutze 12 auf, die zur Lagerung einer Umlenkrolle 13 für ein Ubertra¬ gungselement 14 dient, das biegsam aber möglichst unelastisch sein soll und hier beispielsweise als Seil ausgebildet ist Zwei weitere Umlenkrollen 15, 16 sind in einem Balken 17 gelagert, der über Stirnflächen 18, 19 der Messwalze 3' hinausragt und in dem das eine Ende 20 des Uber- tragungselementes 14 fest gelagert ist Das andere Ende 21 des Ubertragungselementes 14 ist an ein Wegmesssystem 22 angeschlossen und bewegt sich in Richtung eines Pfeiles 23, wenn die Messwalze 3' zur Fuhrung 2 hin oder davon wegbewegt wird Der Pfeil 23 zeigt damit eine Richtung an, die zu einer Bewegungsnchtung des Dickenfuhlers 3, wie sie durch einen Pfeil 24 angegeben ist, geneigt oder abgewinkelt ist Das Wegmesssystem 22 besteht neben dem ei¬ gentlichen Wegmesselement 22a auch aus einer Feder 22b, einer einstellbaren Lagerung 22c für die Feder 22b am Balken 17 und einem Kupplungselement 22d für das Ubertragungselement 14, das hier auch als Messflache für das eigentliche Wegmesselement 22a dient Man erkennt hier auch, dass eine Bewegung der Messwalze 3' in der Richtung des Pfeiles 24 wegen der Bildung einer Schleife im Ubertragungselement 14 eine doppelt so grosse Auslenkung des Endes 21 im Bereiche des Wegmessystemes 22 ergibt Damit kann auch eine Verdoppelung der Messgenau¬ igkeit erreicht werden Die Anpresskraft des Dickenfuhlers 3 gegen die Fuhrung 2 wird (neben der Schwerkraft) von der Feder 22b erzeugtFigure 7 is a schematic representation of the device on a card 1 shows a device according to the invention. Here, a roll 1 can be seen which rests on a fixed guide 2 and which preferably appears as a loose fiber structure such as cotton wool or a fleece, which is referred to below as a roll. A thickness sensor 3 lies on the roll 1 or even immersed, which in this case is designed in particular as a hollow measuring roller 3 '. The inner surface 4 of the measuring roller 3' has two angular grooves 5, 6 which are used for lateral guidance of pairs of rollers 7, 8 which are located on the measuring roller 3 "support The pairs of rollers 7, 8 have axes of rotation 9, 10, which are mounted in a carriage 11. This has a support 12, which is used for mounting a deflection roller 13 for a transmission element 14, which should be flexible but as inelastic as possible, and Here, for example, a rope is formed. Two further deflection rollers 15, 16 are mounted in a beam 17 which projects beyond end faces 18, 19 of the measuring roller 3 'and into one end 20 of the transmission element 14 is fixedly mounted The other end 21 of the transmission element 14 is connected to a displacement measuring system 22 and moves in the direction of an arrow 23 when the measuring roller 3 'is moved towards the guide 2 or away from it. The arrow 23 thus indicates a direction which is inclined or angled toward a movement of the thickness sensor 3, as indicated by an arrow 24. In addition to the actual displacement measuring element 22a, the displacement measuring system 22 also comprises a spring 22b, an adjustable bearing 22c for the spring 22b on the beam 17 and a coupling element 22d for the transmission element 14, which also serves as a measuring surface for the actual displacement measuring element 22a. It can also be seen here that a movement of the measuring roller 3 'in the direction of the arrow 24 due to the formation of a loop in the Transmission element 14 results in a twice as large deflection of end 21 in the area of displacement measuring system 22 Doubling of the measurement accuracy can be achieved. The contact force of the thickness sensor 3 against the guide 2 is generated (in addition to gravity) by the spring 22b
Fig 2 zeigt einen Querschnitt durch die in Fig 1 gezeigte Vomchtung Dann erkennt man wieder¬ um die Rollenpaare 7, 8, den Wagen 11 mit der Stutze 12 und der Umlenkrolle 13, sowie den Balken 17 mit einer Umlenkrolle 15, 16 und einer Achse 25 zu deren Lagerung im Balken 17 Wie aus den Fig 1 und 2 hervorgeht, bildet die Fuhrung 2 hier im wesentlichen eine Ebene Fig 3 zeigt eine Vomchtung mit drei Dickenfuhlem 26, 27, 28 die hier alle auf einem gemein¬ samen Balken 29 über einer Fuhrung 30 gelagert sind Der Aufbau der Dickenfuhler 26, 27 28 ist derjenige, der bereits aus den Fig 1 und 2 bekannt ist Dabei haben aber alle Dickenfuhler 26, 27, 28 ein gemeinsames Ubertragungselement 31 und ein gemeinsames Wegmesssystem 32, das auf einer Seite der drei Dickenfuhler 26, 27 28 auf dem Balken 29 befestigt ist Der Balken 29 kann beispielsweise in hier nicht naher dargestellter aber bekannter Art und Weise mit der Fuhrung 30 verbunden sein, sich darauf abstutzen oder in irgend einer anderen Weise, insbe¬ sondere ortsfest und in einem festen Abstand zur Fuhrung gelagert sein Das Ubertragungs¬ element 31 durchquert hier mehrere Messwalzen die zwischen dem Wegmesssystem 32 und einer festen Lagerung 51 angeordnet sind Im Wegmesssystem 32 ist auch eine feste Lagerung 32c für eine Feder 32b vorgesehen die über ein Kupplungselement 32d mit dem Ubertragungs¬ element 31 verbunden ist Die Lagerung 32c ist längs des Balkens 29 verschieb- und einstellbar so dass die Spannkraft der Feder 32b und damit auch die Andaickkraft aller vorgesehenen Dik- kenfυhler 26, 27 28 gemeinsam einstellbar istFIG. 2 shows a cross section through the device shown in FIG. 1. Then one can again see the pairs of rollers 7, 8, the carriage 11 with the support 12 and the deflection roller 13, and the bar 17 with a deflection roller 15, 16 and an axis 25 for their storage in the beam 17 As can be seen from FIGS. 1 and 2, the guide 2 essentially forms a plane here 3 shows a device with three thickness sensors 26, 27, 28, all of which are mounted here on a common beam 29 above a guide 30. The structure of the thickness sensors 26, 27 28 is the one that is already known from FIGS. 1 and 2 However, all the thickness sensors 26, 27, 28 have a common transmission element 31 and a common position measuring system 32, which is attached to the bar 29 on one side of the three thickness sensors 26, 27, 28. The bar 29 can be, for example, in a known manner, not shown here and be connected to the guide 30, lean on it or be mounted in some other way, in particular stationary and at a fixed distance from the guide. The transmission element 31 here crosses several measuring rollers between the position measuring system 32 and a fixed bearing 51 A fixed bearing 32c for a spring 32b is also provided in the path measuring system 32 and is connected to the transmission via a coupling element 32d gs¬ element 31 is connected. The bearing 32c is displaceable and adjustable along the beam 29 so that the tensioning force of the spring 32b and thus also the pressing force of all the provided thickness sensors 26, 27 28 can be adjusted together
Fig 4 zeigt nochmals den Einsatz eines erfindungsgemassen Dickenfuhlers 3 über einer statio¬ nären und ebenen Führung 2 mit einem Wickel 1 der durch hier nicht gezeigte Mittel in Richtung eines Pfeiles 33 angetπebeπ ist und damit die Messwalze 3' antreibt Im Bereiche des Dickenfuh¬ lers 3 erfahrt der Wickel 1 eine Verdichtung so dass sich seine Hohe auf einen Betrag a vemn gert4 again shows the use of a thickness sensor 3 according to the invention above a stationary and flat guide 2 with a winding 1 which is applied in the direction of an arrow 33 by means not shown here and thus drives the measuring roller 3 'in the area of the thickness sensor 3 the winding 1 experiences a compression so that its height increases to an amount a vemn
Fig 5 zeigt einen Dickenfuhler 3 wie er über einer runden Fuhrung hier einer Walze 34 die in Richtung eines Pfeiles 35 angetneben ist, angeordnet sein kann Auch hier ergibt sich eine Ver¬ dichtung des Wickels 1 auf den Betrag aFigure 5 shows a Dickenfuhler 3 as it is angetneben in the direction of an arrow 35 through a round leadership here a roller 34, can also be arranged here results in a ¬ Ver seal of the package 1 to the amount a
Fig 6 zeigt einen Dickenfuhler 3 wie er über einer mehrteiligen Fuhrung hier aus zwei Walzen 36 und 37 bestehend die in Richtung von Pfeilen 38 angetπeben sind angeordnet sein kann Auch hier ergibt sich eine Verdichtung des Wickels 1 auf den Betrag a Fig 7 zeigt die Anwendung eines erfindungsgemassen Dickenfuhlers 39 im Umfeld einer Karde 40 mit nachgeschaltetem Kannensystem 41 zur Ablage von kardiertem Band 42 Karde und Kannen weisen einen gemeinsamen mechanischen oder elektπschen Antπeb 43 und ein Uberwachungs- und Regelsystem 44 auf Wie hier gezeigt, kann der Dickenfuhler 39 im Bereiche einer Einzugswalze 45 am Eingang zur Karde 40 vorgesehen und über eine Leitung 46 mit dem Uberwachungs- und Regelsystem 44 verbunden sein6 shows a thickness sensor 3 as it can be arranged over a multi-part guide here consisting of two rollers 36 and 37 which are indicated in the direction of arrows 38. Here, too, there is a compression of the roll 1 to the amount a 7 shows the use of a thickness sensor 39 according to the invention in the vicinity of a card 40 with a downstream can system 41 for depositing carded tape 42. The card and cans have a common mechanical or electrical device 43 and a monitoring and control system 44. As shown here, the thickness sensor can 39 are provided in the area of a feed roller 45 at the entrance to the card 40 and are connected to the monitoring and control system 44 via a line 46
Die Wirkungsweise der erfindungsgemassen Vomchtung ist wie folgt Durch die unterschiedliche Dicke des bewegten Wickels 1 wird die Messwalze 3' mehr oder weniger stark von der Führung 2 abgehoben Dabei wird eine Bewegung der Messwalze 3' über die Rollen 7, 8, den Wagen 11 , die Stutze 12 und die Umlenkrolle 13 auf das Ubertragungs¬ element 14 übertragen, das dabei eine Schleife die es im Bereiche der Umlenkrollen 13, 15, 16 bildet, vergrossert oder verkleinert Dabei entsteht ein Wegsignal mit dem ein Geber 47 im Weg¬ messsystem 22 mehr oder weniger ausgelenkt wird, was die Angabe über die Dicke oder die Gleichmassigkeit des Wickels 1 liefert Statt des Gebers 47 kann das Wegmesssystem 22 aber auch beruhrungslos arbeitenThe mode of operation of the device according to the invention is as follows: Due to the different thickness of the moving roll 1, the measuring roller 3 'is lifted more or less strongly from the guide 2. Movement of the measuring roller 3' over the rollers 7, 8, the carriage 11, Support 12 and the deflecting roller 13 are transferred to the transmission element 14, which thereby enlarges or reduces a loop which it forms in the regions of the deflecting rollers 13, 15, 16. This produces a displacement signal with which an encoder 47 in the displacement measuring system 22 more or is deflected less, which provides the information about the thickness or the uniformity of the winding 1 Instead of the encoder 47, the path measuring system 22 can also work without contact
Bei der Anordnung mehrerer solcher Dickenfuhler 26, 27 28 nebeneinander summieren sich die Auslenkungen von drei Schleifen 48, 49, 50, so, dass sich an demjenigen Ende des Ubertra- gungselementes, das am Wegmesssystem 32 befestigt ist, ein Signal ergibt das der gemittelten Dicke des Wickels 1 entspncht Da alle Schleifen 48, 49 50 von einer mittleren Auslenkung auch bei einer Dicke Null des Wickels 1 ausgehen, werden sehr geπnge Dicken auf einer Messwalze mit grosseren Dicken auf einer anderen Messwalze verrechnet Bei mehreren Dickenfuhlem in Seπeschaltung, wie aus der Fig 3 bekannt, muss auch das Wegmesssystem 32 entsprechend geeicht werden When several such thickness sensors 26, 27, 28 are arranged next to one another, the deflections of three loops 48, 49, 50 add up such that a signal results at that end of the transmission element which is attached to the path measuring system 32, that of the average thickness of the winding 1 corresponds, since all loops 48, 49 50 assume an average deflection even with a zero thickness of the winding 1, very narrow thicknesses on one measuring roller are offset with larger thicknesses on another measuring roller.With several thickness sensors in a switching circuit, as shown in Fig 3 known, the displacement measuring system 32 must also be calibrated accordingly

Claims

Patentanspruche Claims
Vomchtung zum Messen der Dicke und/oder der Ungleichmassigkeit von nachfolgend alsDevice for measuring the thickness and / or the unevenness from below as
Wickel (1) bezeichneten Watten oder Vliesen, mit einer Führung (2) für den Wickel und mit einem diesen gegen die Fuhrung druckenden und relativ zu dieser bewegbaren Dik- kenfuhler (3), dessen Stellung ein Mass für die Dicke und/oder die Ungleichmassigkeit des Wickels darstellt, gekennzeichnet durch ein Ubertragungselement (14), das zur Über¬ tragung der Stellung des Dickenfuhlers in ein Wegsignal in einer wahlbaren, zur Bewe- gungsπchtung (24) des Dickenfuhlers beliebig geneigten Richtung (23) ausgebildet und angeordnet istWadding (1) designated wadding or nonwovens, with a guide (2) for the winding and with a thickness sensor (3) printing against the guide and movable relative to the guide, the position of which is a measure of the thickness and / or the unevenness of the winding, characterized by a transmission element (14) which is designed and arranged to transmit the position of the thickness sensor in a path signal in an optional direction (23) which is inclined to move (24) the thickness sensor
Vomchtung nach Anspruch 1 , dadurch gekennzeichnet, dass das Ubertragungselement (14) ein biegsames und um Rollen umgelenktes Element aufweist, das an einem Ende (20) fest gelagert und am anderen Ende (21) mit einem Wegmesssystem (22) verbundenDevice according to claim 1, characterized in that the transmission element (14) has a flexible element which is deflected around rollers and which is fixedly mounted at one end (20) and connected to a displacement measuring system (22) at the other end (21)
Vomchtung nach Anspruch 1 , dadurch gekennzeichnet, dass der Dickenfuhler (3) aus einer Messwalze (3') besteht, die an einem Balken (17) bewegbar und drehbar gelagert ist, der einen festen Abstand zur Führung aufweistDevice according to claim 1, characterized in that the thickness sensor (3) consists of a measuring roller (3 ') which is movably and rotatably mounted on a bar (17) which is at a fixed distance from the guide
Vomchtung nach Anspruch 3, dadurch gekennzeichnet, dass die Messwalze (3') hohl ist, der Balken (17) die Messwalze durchquert und dabei über mindestens eine Stirnfläche (18, 19) der Messwalze hinausragtDevice according to claim 3, characterized in that the measuring roller (3 ') is hollow, the bar (17) passes through the measuring roller and thereby projects beyond at least one end face (18, 19) of the measuring roller
Vomchtung nach Anspruch 1 , dadurch gekennzeichnet, dass mehrere Dickenfuhler (26 27, 28) nebeneinander angeordnet sind und das Ubertragungselement (31 ) sich über mehrere Dickenfuhler erstreckt 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass das Übertragungselement zum Addieren der Wegsignale mehrerer Dickenfühler ausgebildet ist.Device according to claim 1, characterized in that a plurality of thickness sensors (26, 27, 28) are arranged next to one another and the transmission element (31) extends over a number of thickness sensors 6. The device according to claim 5, characterized in that the transmission element is designed to add the displacement signals of a plurality of thickness sensors.
7. Vorrichtung nach Anspruch 2, 4 und 5, dadurch gekennzeichnet, dass das Ubertragungs¬ element mehrere Messwalzen durchquerend angeordnet ist, die zwischen dem Weg¬ messsystem (32) und der festen Lagerung (51) vorgesehen sind.7. The device according to claim 2, 4 and 5, characterized in that the Ubertragungs¬ element is arranged crossing several measuring rollers, which are provided between the Weg¬ measuring system (32) and the fixed bearing (51).
8. Vomchtung nach Anspruch 2, dadurch gekennzeichnet, dass das Übertragungselement (31) in einem Dickenfuhler eine Schleife 48, 49, 50) bildet, so dass der Weg der Aus¬ lenkungen des Dickenfühlers zur Erfassung im Wegmesssystem (32) verdoppelt ist8. The device according to claim 2, characterized in that the transmission element (31) forms a loop 48, 49, 50) in a thickness sensor, so that the path of the deflections of the thickness sensor for detection in the distance measuring system (32) is doubled
9. Vomchtung nach Anspruch 2, dadurch gekennzeichnet, dass das Ubertragungselement (14) im Bereiche des Wegmesssystems (22) mit einer Feder (22b) verbunden ist, die zur Einstellung der Druckkraft des Dickenfühlers (3) auf die Führung (2) vorgesehen ist9. device according to claim 2, characterized in that the transmission element (14) in the region of the displacement measuring system (22) is connected to a spring (22b) which is provided for adjusting the pressure force of the thickness sensor (3) on the guide (2)
10 Vomchtung nach Anspruch 9, dadurch gekennzeichnet, dass die Druckkraft mehrerer Dickenfuhler (26, 27, 28) über eine einzige Feder (32b) einstellbar ist 10 device according to claim 9, characterized in that the pressure force of a plurality of thickness sensors (26, 27, 28) can be adjusted via a single spring (32b)
EP97904981A 1996-03-27 1997-03-12 Device for measuring the thickness and/or unevenness of wadding or non-wovens Expired - Lifetime EP0891435B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH79196 1996-03-27
CH79196 1996-03-27
CH791/96 1996-03-27
PCT/CH1997/000102 WO1997036031A1 (en) 1996-03-27 1997-03-12 Device for measuring the thickness and/or unevenness of wadding or non-wovens

Publications (2)

Publication Number Publication Date
EP0891435A1 true EP0891435A1 (en) 1999-01-20
EP0891435B1 EP0891435B1 (en) 2001-11-28

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EP97904981A Expired - Lifetime EP0891435B1 (en) 1996-03-27 1997-03-12 Device for measuring the thickness and/or unevenness of wadding or non-wovens

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US (1) US6199289B1 (en)
EP (1) EP0891435B1 (en)
JP (1) JP2000508064A (en)
CN (1) CN1214743A (en)
DE (1) DE59705554D1 (en)
TW (1) TW335424B (en)
WO (1) WO1997036031A1 (en)

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IT1302166B1 (en) * 1997-09-17 2000-07-31 Truetzschler & Co DEVICE ON A STRIRATOIO FOR THE MEASUREMENT OF A FIBRECOMPOSITE TAPE MADE OF FIBER TAPES
DE20015505U1 (en) * 2000-09-07 2001-07-12 Noltronic Grecon Greten Gmbh & Measuring device for the continuous measurement of the thickness of elongated workpieces
CN101845690B (en) * 2010-04-28 2012-01-18 青岛东昌纺机制造有限公司 Cotton layer thickness detecting and regulating device of carding machine
CN112481784A (en) * 2020-11-20 2021-03-12 沈晓艳 Measuring, detecting and adjusting integrated textile machine

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Also Published As

Publication number Publication date
JP2000508064A (en) 2000-06-27
WO1997036031A1 (en) 1997-10-02
EP0891435B1 (en) 2001-11-28
US6199289B1 (en) 2001-03-13
CN1214743A (en) 1999-04-21
DE59705554D1 (en) 2002-01-10
TW335424B (en) 1998-07-01

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