EP0891435A1 - Dispositif pour mesurer l'epaisseur et/ou l'inegalite d'ouates ou de non-tisses - Google Patents

Dispositif pour mesurer l'epaisseur et/ou l'inegalite d'ouates ou de non-tisses

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)
English (en)
Other versions
EP0891435B1 (fr
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/fr
Application granted granted Critical
Publication of EP0891435B1 publication Critical patent/EP0891435B1/fr
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

La présente invention qui concerne un dispositif permettant de mesurer l'épaisseur et/ou l'inégalité d'ouates ou de non-tissés appelés ci-après rouleaux, comporte un guidage (30) du rouleau et un détecteur d'épaisseur (26, 27, 28) appuyant le rouleau contre ce guidage et pouvant se déplacer par rapport à lui, sa position représentant une mesure de l'épaisseur et/ou de l'inégalité du rouleau. Pour rendre ce dispositif plus simple et en diminuer le coût, tout en ayant une bonne qualité de mesure, il ne faut plus doter chaque détecteur que d'un seul élément de translation (31) qui en transforme les déflexions dans une direction en un signal de déplacement disponible dans une autre direction. On peut ainsi additionner les signaux correspondant à plusieurs détecteurs individuels et les transmettre à un seul et même système de mesure de déplacement (32).
EP97904981A 1996-03-27 1997-03-12 Dispositif pour mesurer l'epaisseur et/ou l'inegalite d'ouates ou de non-tisses Expired - Lifetime EP0891435B1 (fr)

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 (fr) 1996-03-27 1997-03-12 Dispositif pour mesurer l'epaisseur et/ou l'inegalite d'ouates ou de non-tisses

Publications (2)

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

Family

ID=4195273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97904981A Expired - Lifetime EP0891435B1 (fr) 1996-03-27 1997-03-12 Dispositif pour mesurer l'epaisseur et/ou l'inegalite d'ouates ou de non-tisses

Country Status (7)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1302166B1 (it) * 1997-09-17 2000-07-31 Truetzschler & Co Dispositivo su uno striratoio per la misura di una nastro di fibrecomposito formato da nastri di fibre
DE20015505U1 (de) * 2000-09-07 2001-07-12 Noltronic Grecon Greten GmbH & Co. KG, 58507 Lüdenscheid Messeinrichtung zur kontinuierlichen Erfassung der Dicke langgestreckter Werkstücke
CN101845690B (zh) * 2010-04-28 2012-01-18 青岛东昌纺机制造有限公司 梳棉机棉层厚度检测调整装置
CN112481784A (zh) * 2020-11-20 2021-03-12 沈晓艳 一种计量、检测、调整一体化的纺织机械

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US477818A (en) * 1892-06-28 Alexander patterson
SU148263A1 (ru) * 1959-12-14 1961-11-30 М.И. Пистров Устройство дл автоматического регулировани толщины резиновой ленты к универсальному каландру
CA982459A (en) * 1972-11-14 1976-01-27 William T. Arnold Apparatus for straightening and cutting reinforcing bar
JPS58158509A (ja) * 1982-03-15 1983-09-20 Mitsubishi Electric Corp 巻径検出装置
EP0222741B1 (fr) * 1985-04-19 1988-07-20 GAO Gesellschaft für Automation und Organisation mbH Systeme de mesure de l'epaisseur pour materiau en feuilles
DE3708186A1 (de) 1987-03-13 1988-09-22 Hergeth Hubert Vorrichtung und verfahren zum hochgenauen messen von fasermatten
US4903750A (en) * 1988-08-31 1990-02-27 Westinghouse Electric Corp. Continuous caster roll monitor
DE3834110A1 (de) 1988-10-07 1990-04-12 Truetzschler & Co Verfahren und vorrichtung zur bewegungserfassung von textilfaserbaendern, z. b. kardenbaendern
EP0455014A1 (fr) 1990-04-27 1991-11-06 Maschinenfabrik Rieter Ag Appareil pour la détection de la masse ou dimensions d'un ruban de fibres
JPH0434024A (ja) 1990-05-29 1992-02-05 Daiwabo Co Ltd 混打綿機におけるラップ重量自動制御装置
CH681019A5 (fr) 1990-07-04 1992-12-31 Zellweger Uster Ag
DE4414972C2 (de) 1994-04-29 2003-07-24 Rieter Ingolstadt Spinnerei Korrektur eines von einem Tastwalzenpaar zur Dicke eines textilen Faserbandes gewonnenen Meßsignals

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9736031A1 *

Also Published As

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

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