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DE4030882C1 - Electrical and magnetic fields insensitive continuous plating plant - has forked sensor head to position strip edge, arms to mount AC transmitter and parallelly connected receiver coils - Google Patents

Electrical and magnetic fields insensitive continuous plating plant - has forked sensor head to position strip edge, arms to mount AC transmitter and parallelly connected receiver coils

Info

Publication number
DE4030882C1
DE4030882C1 DE19904030882 DE4030882A DE4030882C1 DE 4030882 C1 DE4030882 C1 DE 4030882C1 DE 19904030882 DE19904030882 DE 19904030882 DE 4030882 A DE4030882 A DE 4030882A DE 4030882 C1 DE4030882 C1 DE 4030882C1
Authority
DE
Germany
Prior art keywords
receiver coils
transmitter
magnetic fields
arms
sensor head
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
DE19904030882
Other languages
German (de)
Inventor
Heinz 4600 Dortmund De Toelle
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.)
ELMEG Elektro Mechanik GmbH
Original Assignee
HOESCH STAHL AG 4600 DORTMUND DE
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 HOESCH STAHL AG 4600 DORTMUND DE filed Critical HOESCH STAHL AG 4600 DORTMUND DE
Priority to DE19904030882 priority Critical patent/DE4030882C1/en
Application granted granted Critical
Publication of DE4030882C1 publication Critical patent/DE4030882C1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/003Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00Processes for servicing or operating cells for electrolytic coating
    • C25D21/12Process control or regulation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/104Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
    • G01V3/105Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
    • G01V3/107Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops using compensating coil or loop arrangements

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Geophysics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Geology (AREA)
  • Automation & Control Theory (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)

Abstract

In a continuous plating plant, the position of strip edges is determined by an arrangement of a forked sensor head (4), between whose arms (5, 6), the edge (2) of the strip (3) passes. One arm mounts a transmitter coil (7), whose axis (8) is perpendicular to the arm, while the other arm (6) mounts two receiver coils (9, 10). The transmitter is supplied with alternating current and receiver coils are connected in parallel and to a signal amplifier. ADVANTAGE - Insensitive to strong electrical and magnetic fields.

Description

Die Erfindung betrifft eine Vorrichtung zur Lagebestimmung von metallischen Bandkanten nach dem Oberbegriff des Anspruchs 1.The invention relates to a device for determining the position of metallic strip edges according to the preamble of claim 1.

Es ist eine Meßeinrichtung mit einem gabelförmigen Abtastkopf zur berührungslosen Erfassung von metallischen Bandkanten für die Belange in kontinuierlichen elektrolytischen Beschichtungsanlagen bekannt, wobei die Meßeinrichtung die Aufgabe übernimmt, Posi­ tionsänderungen der Bandkante als Folge von Breitenänderung oder Bewegung in Bandbreitenrichtung zu messen. Die so gewonnenen elek­ trischen Signale sollen eine exakte Positionierung von Kanten­ masken zur Vermeidung von Überbeschichtung an der Bandkante er­ lauben. Es hat sich aber in der Praxis gezeigt, daß die vom Ab­ tastkopf gelieferten elektrischen Signale durch die starken elek­ trischen und magnetischen Felder in den Beschichtungsbehältern und deren Änderungen unkontrolliert beeinflußt werden, so daß dies Fehlauslösungen der nachfolgenden Steuerung der Kantenmasken zur Folge hat.It is a measuring device with a fork-shaped scanning head non-contact detection of metallic belt edges for the Concerns in continuous electrolytic coating systems known, the measuring device takes on the task, Posi changes in the strip edge as a result of a change in width or Measure movement in bandwidth direction. The elec trical signals are intended to position edges precisely masks to avoid over-coating on the belt edge arbor. However, it has been shown in practice that the ab electrical signals supplied by the strong elec trical and magnetic fields in the coating containers and whose changes are influenced in an uncontrolled manner, so that this incorrect triggering of the subsequent control of the edge masks has the consequence.

Von daher liegt der Erfindung die Aufgabe zugrunde, eine Vorrich­ tung der eingangs genannten Art zu schaffen, die unempfindlich gegen starke elektrische und magnetische Felder und deren Ände­ rungen ist.Therefore, the invention has for its object a Vorrich tion of the type mentioned to create the insensitive against strong electric and magnetic fields and their changes stakes.

Diese Aufgabe wird erfindungsgemäß durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst. This object is achieved by the characterizing Part of claim 1 specified features solved.  

Zweckmäßige und vorteilhafte Ausführungen des Gegenstandes des Anspruchs 1 sind in den Unteransprüchen 2 bis 5 angegeben. Die Vorteile der Vorrichtung nach der Erfindung bestehen insbe­ sondere darin, daß sie völlig unempfindlich gegenüber starken elektrischen und magnetischen Feldern und deren Änderungen ist, wodurch eine genaue Steuerung der Kantenmasken ermöglicht wird.Appropriate and advantageous designs of the subject of Claim 1 are specified in the subclaims 2 to 5. The advantages of the device according to the invention are in particular special in that they are completely insensitive to strong electric and magnetic fields and their changes is which enables precise control of the edge masks.

Anhand der Zeichnung wird die erfindungsgemäße Vorrichtung im folgenden näher erläutert: Es zeigtBased on the drawing, the device according to the invention in explained the following: It shows

Fig. 1 den schematischen Aufbau eines Abtastkopfes mit der Bandkante eines Metallbandes, Fig. 1 shows the schematic construction of a scanning head with the band edge of a metal strip,

Fig. 2 den Abtastkopf nach Fig. 1 mit Feldlinien, Fig. 2 shows the scanning head of FIG. 1 with field lines,

Fig. 3 den Abtastkopf nach den Fig. 1 und 2 mit der schematisch dargestellten Auswerteelektronik und Steuerungseinheit. Fig. 3 shows the scan head of FIGS. 1 and 2 with the schematically shown electronic evaluation and control unit.

Wie aus den Fig. 1 bis 3 hervorgeht, besteht eine Vorrichtung 1 (Fig. 3) zur Lagebestimmung der Bandkante 2 eines Metallbandes 3 in einer nicht dargestellten kontinuierlich arbeitenden Beschich­ tungsanlage aus einem gabelförmig ausgebildeten Abtastkopf 4, zwi­ schen dessen Schenkel 5, 6 die Bandkante 2 des Metallbandes 3 durchläuft (Fig. 1). Im Schenkel 5 ist mittig eine Sendespule 7, deren Achse 8 zum Schenkel 5 senkrecht verläuft, angeordnet. Der Schenkel 6 weist zwei jeweils gleich weit von der Achse 8 der Sendespule 7 entfernt Empfängerspulen 9, 10 auf, die eine gemein­ same sich waagerecht in Schenkellängsrichtung erstreckende Mit­ tenachse 11 haben und gleichsinnig gewickelt sind.As can be seen from FIGS. 1 to 3, there is a device 1 ( FIG. 3) for determining the position of the strip edge 2 of a metal strip 3 in a continuously operating coating system, not shown, from a fork-shaped scanning head 4 , between its legs 5 , 6 Band edge 2 of the metal strip 3 passes through ( Fig. 1). In the legs 5 is centered a transmitting coil 7, the axis 8 is perpendicular to the leg 5 is arranged. The leg 6 has two equally far from the axis 8 of the transmitter coil 7 remote receiver coils 9 , 10 , which have a common same horizontally extending in the longitudinal direction with tenachse 11 and are wound in the same direction.

Die Sendespule 7 im Schenkel 5 wird über elektrische Leitungen 12, 13 mit einer Wechselspannung beaufschlagt. Die Empfängerspu­ len 9, 10 im Schenkel 6 sind zueinander parallel geschaltet und über Leitungen 14, 15 mit einem Signalverstärker 16 (Fig. 3) ver­ bunden, der wiederum die Signale, die durch das Eintauchen der Bandkante 2 des Metallbandes 3 in das durch die Sendespule 7 ge­ bildete elektromagnetische Feld, dessen Feldlinien 26 (Fig. 2) die Empfängerspulen 9, 10 jeweils in unterschiedlicher Richtung durchlaufen, und der dadurch entstehenden Störung des elektroma­ gnetischen Feldes entstehen, über eine Leitung 17 an eine Aus­ werteelektronik 18 weitergibt. Die Auswerteelektronik 18 steht über eine Leitung 19 mit einer Steuerungseinheit 20 in Verbin­ dung, die zur Steuerung des Kolbens 23 in einem Zylinder 24 dient. Der Kolben 23 ist dabei mittels eines Befestigungsarmes 25 mit dem Abtastkopf 4 verbunden, so daß dieser je nach Lage der Bandkante 2 des Metallbandes 3 aufgrund der durch die Störung des elektromagnetischen Feldes durch die Bandkante 2 des Metallbandes 3 hervorgerufenen Signale verfahrbar ist, wodurch zu jeder Zeit sicher die Lage der Bandkante 2 des Metallbandes 3 bestimmt wer­ den kann und eine exakte Steuerung der Kantenmaske ermöglicht wird. The transmitter coil 7 in the leg 5 is supplied with an AC voltage via electrical lines 12 , 13 . The Receiver spo len 9 , 10 in the leg 6 are connected in parallel to each other and connected via lines 14 , 15 with a signal amplifier 16 ( Fig. 3) connected, which in turn the signals caused by the immersion of the band edge 2 of the metal strip 3 in the by Transmitter coil 7 ge formed an electromagnetic field, the field lines 26 ( FIG. 2) pass through the receiver coils 9 , 10 each in different directions, and the resulting interference in the electromagnetic field arises, passed on via a line 17 to an electronic evaluation unit 18 . The evaluation electronics 18 is connected via a line 19 to a control unit 20 which serves to control the piston 23 in a cylinder 24 . The piston 23 is connected by means of a fastening arm 25 to the scanning head 4 , so that it can be moved depending on the position of the band edge 2 of the metal band 3 due to the signals caused by the disturbance of the electromagnetic field by the band edge 2 of the metal band 3 , whereby to each Time certainly determines the position of the band edge 2 of the metal band 3 who can and the exact control of the edge mask is made possible.

BezugszeichenverzeichnisReference numeral

 1 Vorrichtung
 2 Bandkanten
 3 Metallband
 4 Abtastknopf
 5 Schenkel
 6 Schenkel
 7 Sendespule
 8 Achse
 9 Empfängerspule
10 Empfängerspule
11 Mittenachse
12 Leitung
13 Leitung
14 Leitung
15 Leitung
16 Signalverstärker
17 Leitung
18 Auswerteelektronik
19 Leitung
20 Steuerungseinheit
21 Leitung
22 Leitung
23 Kolben
24 Zylinder
25 Befestigungsarm
26 Feldlinien
1 device
2 band edges
3 metal band
4 scanning button
5 legs
6 legs
7 transmitter coil
8 axis
9 receiver coil
10 receiver coil
11 center axis
12 line
13 line
14 line
15 line
16 signal amplifiers
17 line
18 evaluation electronics
19 management
20 control unit
21 line
22 line
23 pistons
24 cylinders
25 mounting arm
26 field lines

Claims (5)

1. Vorrichtung zur Lagebestimmung von metallischen Bandkanten in einer kontinuierlich arbeitenden galvanischen Beschichtungsan­ lage, bestehend aus gabelförmig ausgebildeten Abtastköpfen und daran angeschlossenen Signalverstärkern, die die Signale einer Auswertelektronik und Steuerung zuleiten, wobei die Schenkel der Abtastköpfe die Bandkanten berührungslos umgreifen und in diesen Schenkeln Sende- und Empfängerspulen angeordnet sind, dadurch gekennzeichnet, daß ein Schenkel (5) wenigstens eine mit Wechselstrom beaufschlagte Sendespule (7) und der andere Schenkel (6) mindestens zwei Empfängerspulen (9, 10) aufwei­ sen.1.Device for determining the position of metallic strip edges in a continuously operating galvanic coating system, consisting of fork-shaped scanning heads and signal amplifiers connected to them, which supply the signals to evaluation electronics and control, the legs of the scanning heads embracing the strip edges without contact and transmitting in these legs. and receiver coils are arranged, characterized in that one leg ( 5 ) has at least one transmitter coil ( 7 ) charged with alternating current and the other leg ( 6 ) has at least two receiver coils ( 9 , 10 ). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Achse (8) der Sendespule (7) senkrecht zu der Mittenachse (11) der Empfängerspulen (9, 10) verläuft.2. Device according to claim 1, characterized in that the axis ( 8 ) of the transmitter coil ( 7 ) perpendicular to the central axis ( 11 ) of the receiver coils ( 9 , 10 ). 3. Vorrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeich­ net, daß die Empfängerspulen (9, 10) beidseitig mit gleichem Abstand zu der Achse (8) der Sendespule (7) im Schenkel (6) des Abtastkopfes (4) angeordnet sind.3. Device according to claims 1 and 2, characterized in that the receiver coils ( 9 , 10 ) are arranged on both sides with the same distance to the axis ( 8 ) of the transmitter coil ( 7 ) in the leg ( 6 ) of the scanning head ( 4 ). 4. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Empfängerspulen (9, 10) wahl­ weise parallel oder in Reihe geschaltet sind.4. The device according to one or more of claims 1 to 3, characterized in that the receiver coils ( 9 , 10 ) are optionally connected in parallel or in series. 5. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Abtastköpfe (4) jeweils von einer Schicht aus Gießharz umhüllt sind.5. The device according to one or more of claims 1 to 4, characterized in that the scanning heads ( 4 ) are each encased by a layer of cast resin.
DE19904030882 1990-09-29 1990-09-29 Electrical and magnetic fields insensitive continuous plating plant - has forked sensor head to position strip edge, arms to mount AC transmitter and parallelly connected receiver coils Expired - Lifetime DE4030882C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904030882 DE4030882C1 (en) 1990-09-29 1990-09-29 Electrical and magnetic fields insensitive continuous plating plant - has forked sensor head to position strip edge, arms to mount AC transmitter and parallelly connected receiver coils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904030882 DE4030882C1 (en) 1990-09-29 1990-09-29 Electrical and magnetic fields insensitive continuous plating plant - has forked sensor head to position strip edge, arms to mount AC transmitter and parallelly connected receiver coils

Publications (1)

Publication Number Publication Date
DE4030882C1 true DE4030882C1 (en) 1992-01-16

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DE19904030882 Expired - Lifetime DE4030882C1 (en) 1990-09-29 1990-09-29 Electrical and magnetic fields insensitive continuous plating plant - has forked sensor head to position strip edge, arms to mount AC transmitter and parallelly connected receiver coils

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Country Link
DE (1) DE4030882C1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4219979A1 (en) * 1991-06-20 1992-12-24 Tiefenbach Gmbh Control installation in a galvanising plant - has measuring heads with feelers to measure distance between strip edge and head w.r.t. predetermined value obtd. by feeler, for automatic adjustment of masks
WO2003071232A1 (en) * 2002-02-22 2003-08-28 Fast Technology Ag Pulsed torque, force or general measurement with a coil and a magnetic field sensor (tangentially, circumferentially
WO2003071231A1 (en) * 2002-02-22 2003-08-28 Fast Technology Ag Magnetically neutral displacement (torque) transducer for a ferromagnetic member with coil(s) and magnetic field sensor(s)
DE102020120238A1 (en) 2020-07-31 2022-02-03 Emg Automation Gmbh Device for the inductive measurement of edge positions of a metal strip

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NICHTS ERMITTELT *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4219979A1 (en) * 1991-06-20 1992-12-24 Tiefenbach Gmbh Control installation in a galvanising plant - has measuring heads with feelers to measure distance between strip edge and head w.r.t. predetermined value obtd. by feeler, for automatic adjustment of masks
WO2003071232A1 (en) * 2002-02-22 2003-08-28 Fast Technology Ag Pulsed torque, force or general measurement with a coil and a magnetic field sensor (tangentially, circumferentially
WO2003071231A1 (en) * 2002-02-22 2003-08-28 Fast Technology Ag Magnetically neutral displacement (torque) transducer for a ferromagnetic member with coil(s) and magnetic field sensor(s)
GB2402491A (en) * 2002-02-22 2004-12-08 Fast Technology Ag Magnetically neutral displacement (torque) transducer for a ferromagnetic member with coil(s) and magnetic field sensor(s)
GB2402491B (en) * 2002-02-22 2005-08-24 Fast Technology Ag Magnetically neutral displacement (torque) transducer for a ferromagnetic member with coil(s) and magnetic field sensor(s)
DE102020120238A1 (en) 2020-07-31 2022-02-03 Emg Automation Gmbh Device for the inductive measurement of edge positions of a metal strip

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: KRUPP HOESCH STAHL AG, 44145 DORTMUND, DE

8327 Change in the person/name/address of the patent owner

Owner name: ELEKTRO-MECHANIK GMBH, 57482 WENDEN, DE

8339 Ceased/non-payment of the annual fee