EP0132819B1 - Device for adjusting a metal band in a processing station - Google Patents

Device for adjusting a metal band in a processing station Download PDF

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Publication number
EP0132819B1
EP0132819B1 EP84108662A EP84108662A EP0132819B1 EP 0132819 B1 EP0132819 B1 EP 0132819B1 EP 84108662 A EP84108662 A EP 84108662A EP 84108662 A EP84108662 A EP 84108662A EP 0132819 B1 EP0132819 B1 EP 0132819B1
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EP
European Patent Office
Prior art keywords
strip
carriers
metal strip
signal
adjusting
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
Application number
EP84108662A
Other languages
German (de)
French (fr)
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EP0132819A1 (en
Inventor
Hans Braun
Helmut Braitinger
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.)
L Schuler GmbH
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L Schuler GmbH
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Filing date
Publication date
Application filed by L Schuler GmbH filed Critical L Schuler GmbH
Publication of EP0132819A1 publication Critical patent/EP0132819A1/en
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Publication of EP0132819B1 publication Critical patent/EP0132819B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B21C47/3408—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the lateral position of the material
    • B21C47/3425—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the lateral position of the material without lateral edge contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B21C47/3408—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the lateral position of the material
    • B21C47/3416—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the lateral position of the material with lateral edge contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/021—Control or correction devices in association with moving strips
    • B21D43/023—Centering devices, e.g. edge guiding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/0204—Sensing transverse register of web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/442—Moving, forwarding, guiding material by acting on edge of handled material
    • B65H2301/4421—Moving, forwarding, guiding material by acting on edge of handled material by abutting edge
    • 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
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/173—Metal

Definitions

  • the invention relates to a device for aligning a metal strip running from a coil to a processing station of the generic type.
  • the edge of a metallic web is queried by means of inductive transducers with a measuring surface arranged perpendicular to the web.
  • the signal characterizing the distance from the web edge to the measuring surface is given as.
  • Reference variable used for readjustment A center scan is not carried out and a center alignment of the metallic web is also not possible via the strip edge scan.
  • US-A-3 610 546 shows and describes an automatic strip alignment device in a processing line with a welding device for metallic connection of the end of a used metal strip unwound from a first coil to the beginning of a new metal strip that can be unwound from a second coil.
  • the strip edge interrogation device comprises a measuring sensor per metal strip in the manner of a contactless proximity switch for adjusting the interrogation device and for detecting the strip edge during operation, as well as a touch contact switch for extending the adjustment device when the metal strip is in contact with the contact switch.
  • the interrogation means are fastened on a common carrier which can be adjusted transversely to the direction of travel of the strip by an electric motor.
  • the strip edges are adjusted by actuators acting on the coils and hydraulically adjusting them transversely to the strip running direction.
  • the impulses emanating from the interrogation means are evaluated for the actuators via an analog electrical evaluation circuit with electrically triggerable solenoid valves in the hydraulic circuit.
  • the strip edge interrogation device is arranged between the coils and the welding station.
  • the metal strips to be connected to one another are aligned with the same edges, but not with respect to their centers to a specific processing station.
  • a device for aligning a metal strip running from a coil which is fed to a processing station.
  • a pair of rollers is used for aligning the metal strip, which is mounted in a frame and can be moved with it to various inclined positions with respect to the passage of the metal strip by means of a servomotor.
  • the metal strip can thus be moved transversely to its longitudinal extent.
  • the adjustment via the servomotor is carried out by a strip edge interrogation device with which the position of both strip edges of the metal strip is detected by means of photo-optical position sensors.
  • the position sensors (interrogation means) are attached to supports transversely to the direction of travel of the metal strip.
  • the carriers can be adjusted towards and away from each other in the direction transverse to the direction of travel of the metal strip and can be adjusted symmetrically by the same distance.
  • the strip edges of metal strips of different widths can be detected by means of further position sensors on the carriers.
  • the signals coming from the position sensors are fed to an evaluation circuit in which the signals for right or left rotation of the servomotors for the inclined position of the pair of rollers and for the carriers are processed.
  • metal strips of different widths previously welded to one another are to be aligned and guided centrally to the subsequent processing station.
  • the presetting is done with a quick opening and closing of the guide means.
  • the fine (-end) setting is done slowly via independent sensors.
  • damage to the metal strip is avoided in an advantageous manner and a precise delivery to a processing station, e.g. B. a press tool possible.
  • the device for guiding metallic webs can surprisingly be used for a zigzag pass through a cutting press.
  • controllable actuators are used, using the press's available options.
  • the inherent lack of leakage is compensated for by a brake unit, which is used for back-up controls at z. B. again thin film webs need not be activated.
  • the feature according to claim 6 is based on press-specific circumstances and enables the metal strip to be aligned with different centers from tool to tool and with a zigzag pass.
  • the strip 2 of a metallic and possibly non-metallic type coming from a reel and running off the coil is fed according to the example shown in FIG. 1 straightening rollers or a welding apparatus 4 and then enters the area of the strip edge interrogation devices 1 and 10.
  • the strip edge interrogation devices are upstream of a processing station, for example a cutting tool 55 (FIG. 4). During a short standstill phase, the subsequent strip 3, weld seam 5, was welded onto the end of the metallic strip 2. The strips are successively detected and guided by the strip edge interrogators during the further passage, arrow 6.
  • the strip edge interrogation devices comprise two carriers 8, 9 movable in the direction of the arrows 57.
  • the carriers are connected via a rack-11, gear-12, shaft-13 drive to an adjusting means, for example a hydraulic motor 14 that runs to the left and right. This drive via counter-rotating racks always enables central adjustment.
  • the carriers carry transducers 17, 18, 19, 21, sensors of inductive, photo-optical or other known type, which are arranged in pairs and in the direction 57 of the transverse adjustment movement one behind the other, and rollers 22, whose axis of rotation by 90 degrees to the width extension of the metallic strip 2, 3 are aligned to abut the strip edges 7 of the metallic strip in operation.
  • the transducers 19, 21 can be arranged in the center dimension of their measuring surfaces in the roller conveyor plane formed by the rollers 22.
  • the hydraulic motor 14 can be controlled via a hydraulic control circuit for fast and slow left and right rotation. The slow open movement is generally not used.
  • a 4/3 directional control valve 27, 28, check valves 29, throttles 32, which can be controlled via the lines 30, and check valves 31 connected in parallel with them are connected.
  • the throttles 32 are used to adjust the speed of the hydraulic motor 14.
  • the hydraulic motor 14 is at least temporarily held at least temporarily by means of the brake 16, which can be acted upon and relieved of pressure via a 3/2-way valve 26 connected to the pressure line 36.
  • the valves are electrically controlled via magnets 46, 47, 48, 49, 51 by means of the evaluation circuit according to FIG. 2.
  • Fig. 3 shows the strip edge interrogation devices in an open position of the adjusting device 8, 9, 11, 12, 13, 14 and the transducers 17, 18, 19, 21 that are inevitably carried with them.
  • the use of metallic strips 2, 3 of different widths is also shown . Otherwise, the same reference numbers are used for FIG. 2 and the other figures for the same components.
  • Fig. 4 shows the possibility of aligning the adjusting device 8, 9, 11, 12, 13, 14 on the tool 55 shown here.
  • the adjusting device including the belt edge interrogation devices is positively guided in slide guides 53 fixed to the frame and can e.g. B. by means of a double-acting cylinder-piston unit 54 in the direction of arrow 56 to match the centers 58, 59 of strip edge inquiry devices and tools.
  • the evaluation circuit shown in FIG. 2 comprises an electronic component 41 for querying and storing the switching states of the connected units and for converting them into output signals.
  • This module 41 operates in the manner of bistable flip-flops - flip-flops - whereby an existing signal at the input at the output is retained and thus maintains the desired switching state, fast forward, slow forward, until the input is maintained by setting another signal or by resetting, for example by entering via the keyboard43 or internal timers.
  • the circuit can be constructed digitally but also analog.
  • the flip-flop 41 At the input of the flip-flop 41 are z.
  • the magnets 46, 47, 48, 49 and 51 of the valves in the control circuit of the hydraulic motor 14 are connected to the outputs of the flip-flop 41 via driver amplifiers 44.
  • the open signal can be via the Keyboard 43, from the welding apparatus 4 or as an internal command of the block 41 and causes a quick opening of the adjustment device.
  • the lines 34 coming from both valves 27, 28 and leading to the hydraulic motor 14 are placed on the pressure line 23 by acting on the solenoid coils 48, 51.
  • the valves 27, 28 are now switched over by applying voltage to the solenoids 47, 49, so that the rotation of the hydraulic motor 14 is effected.
  • a magnetic valve 28 is switched off as a result of the digital signal now present at the input of the component 41, whereby the hydraulic motor 14 until a signal of one of the transducers 18, 21 occurs , namely the transducer of the pair previously not emitting a signal, in a slow motion the metallic band 3 resting on a roller conveyor moves transversely.
  • An opening of the carrier 8 ; 9 in rapid traverse requires that no signal is present at the inductive transducer 42 and a signal is given to the memory via the keyboard 43, the ballast, the welding apparatus 4 or an internal timer which is connected to the block 41.
  • the signal from the inductive sensor 42 causes the carrier to close in rapid traverse. This presupposes that no signal is present at any of the sensors 17, 18.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Ausrichten eines von einem Coil ablaufenden Metallbandes auf eine Bearbeitungsstation der gattungsgemäßen Art.The invention relates to a device for aligning a metal strip running from a coil to a processing station of the generic type.

Für Stanz-, Scher- und dgl. Bearbeitungseinrichtungen der spanlosen Trennung von Werkstücken und Platinen vom laufenden Metallband ist es erforderlich, das Metallband in bezug auf die Bearbeitungsstation auszurichten. Hierzu bedient man sich berührungslos beaufschlagbarer Schaltelemente, die die Lage einer Bandkante abfragen, ohne hierbei die Bandmitte zu erfassen.For punching, shearing and similar processing devices for the chipless separation of workpieces and blanks from the running metal strip, it is necessary to align the metal strip with respect to the processing station. For this purpose, switching elements which can be acted upon without contact are used, which query the position of a strip edge without detecting the strip center.

Nach der DE-B-25 34 823 wird die Kante einer metallischen Bahn mittels induktiver Meßwertaufnehmer abgefragt mit senkrecht zur Bahn angeordneter Meßfläche. Hierbei wird das den Abstand der Bahnkante zur Meßfläche charakterisierende Signal als. Bezugsgröße für die Nachregeleinstellung genutzt. Eine Mittenabtastung erfolgt nicht und auch über die Bandkantenabfrage ist ein mittiges Ausrichten der metallischen Bahn nicht möglich.According to DE-B-25 34 823, the edge of a metallic web is queried by means of inductive transducers with a measuring surface arranged perpendicular to the web. Here, the signal characterizing the distance from the web edge to the measuring surface is given as. Reference variable used for readjustment. A center scan is not carried out and a center alignment of the metallic web is also not possible via the strip edge scan.

In dem Aufsatz « 17 Ways to Track the Edge » von S.L. Sorsen in Control Engeneering, Mai 1964, Seiten 7 uff. werden beispielsweise in Abbildung 4 zwei Lichtwertaufnehmer als berührungslose Meßwertaufnehmer zur Abfrage einer Kante benutzt. Die Signalgabe über die Lichtwertaufnehmer wird hierbei nicht zur Geschwindigkeitsregelung einer quer zur möglichen Längsbewegung des Streifens gesteuerten Verstellbewegung des Streifens ausgewertet.In the article "17 Ways to Track the Edge" by S.L. Sorsen in Control Engeneering, May 1964, pages 7 uff. For example, in Figure 4 two light sensors are used as non-contact sensors for querying an edge. The signaling via the light value sensors is not evaluated here for speed regulation of an adjustment movement of the strip which is controlled transversely to the possible longitudinal movement of the strip.

Die US-A-3 610 546 zeigt und beschreibt eine automatisch wirkende Streifenausrichteinrichtung in einer Bearbeitungslinie mit einer Schweißeinrichtung zum metallischen Verbinden des Endes eines verbrauchten, von einem ersten Coil abgewickelten Metallbandes mit dem Anfang eines neuen, von einem zweiten Coil abwickelbaren Metallbandes. Die Bandkantenabfrageeinrichtung umfaßt je Metallband einen Meßwertaufnehmer in der Art eines berührungslosen Näherungsschalters zum Justieren der Abfrageeinrichtung und zum Erfassen der Bandkante im Betrieb sowie je einen Berührungskontaktschalter zum Ausfahren der Verstelleinrichtung bei Anlage des Metallbandes an den Berührungskontaktschalter. Die Abfragemittel sind auf einem gemeinsamen, durch einen Elektromotor quer zur Bandlaufrichtung verstellbaren Träger befestigt. Die Einregulierung der Bandkanten erfolgt über auf die Coils einwirkende, diese hydraulisch quer zur Bandlaufrichtung verstellende Stellorgane. Die von den Abfragemitteln ausgehenden Impulse werden über eine analoge elektrische Auswerteschaltung mit elektrisch auslösbaren Magnetventilen im Hydraulikkreis für die Stellorgane ausgewertet. Die Bandkantenabfrageeinrichtung ist zwischen den Coils und der Schweißstation angeordnet. Die miteinander zu verbindenden Metallbänder werden kantengleich, jedoch nicht in bezug auf ihre Mitten auf eine bestimmte Bearbeitungsstation ausgerichtet.US-A-3 610 546 shows and describes an automatic strip alignment device in a processing line with a welding device for metallic connection of the end of a used metal strip unwound from a first coil to the beginning of a new metal strip that can be unwound from a second coil. The strip edge interrogation device comprises a measuring sensor per metal strip in the manner of a contactless proximity switch for adjusting the interrogation device and for detecting the strip edge during operation, as well as a touch contact switch for extending the adjustment device when the metal strip is in contact with the contact switch. The interrogation means are fastened on a common carrier which can be adjusted transversely to the direction of travel of the strip by an electric motor. The strip edges are adjusted by actuators acting on the coils and hydraulically adjusting them transversely to the strip running direction. The impulses emanating from the interrogation means are evaluated for the actuators via an analog electrical evaluation circuit with electrically triggerable solenoid valves in the hydraulic circuit. The strip edge interrogation device is arranged between the coils and the welding station. The metal strips to be connected to one another are aligned with the same edges, but not with respect to their centers to a specific processing station.

Desweiteren ist aus der US-A-2 842 361 eine Vorrichtung zum Ausrichten eines von einem Coil ablaufenden Metallbandes bekannt.. das einer Bearbeitungsstation zugeführt wird. Zum Ausrichten des Metallbandes dient hierbei ein Walzenpaar, das in einem Rahmen gelagert und mit diesem über einen Stellmotor in verschiedene Schräglagen in bezug auf den Durchlauf des Metallbandes bewegt werden kann. Das Metallband ist so quer zu seiner Längserstreckung verschiebbar. Die Verstellung über den Stellmotor erfolgt von einer Bandkantenabfrageeinrichtung, mit der vermittels fotooptischer Stellungsfühler die Lage beider Bandkanten des Metallbandes erfaßt werden. Die Stellungsfühler (Abfragemittel) sind quer zur Durchlaufrichtung des Metallbandes an Trägern befestigt. Die Träger sind in der Richtung quer zur Durchlaufrichtung des Metallbandes aufeinander zu und voneinander weg und symmetrisch um gleiche Strecken verstellbar. Vermittels weiterer Stellungsfühler an den Trägern sind die Bandkanten unterschiedlich breiter Metallbänder erfaßbar. Die von den Stellungsfühlern kommenden Signale werden einer Auswerteschaltung zugeführt, in der die Signale für einen Rechts- oder Linkslauf der Stellmotoren für die Schräglage des Walzenpaares und für die Träger aufbereitet werden.Furthermore, from US-A-2 842 361 a device for aligning a metal strip running from a coil is known which is fed to a processing station. A pair of rollers is used for aligning the metal strip, which is mounted in a frame and can be moved with it to various inclined positions with respect to the passage of the metal strip by means of a servomotor. The metal strip can thus be moved transversely to its longitudinal extent. The adjustment via the servomotor is carried out by a strip edge interrogation device with which the position of both strip edges of the metal strip is detected by means of photo-optical position sensors. The position sensors (interrogation means) are attached to supports transversely to the direction of travel of the metal strip. The carriers can be adjusted towards and away from each other in the direction transverse to the direction of travel of the metal strip and can be adjusted symmetrically by the same distance. The strip edges of metal strips of different widths can be detected by means of further position sensors on the carriers. The signals coming from the position sensors are fed to an evaluation circuit in which the signals for right or left rotation of the servomotors for the inclined position of the pair of rollers and for the carriers are processed.

Demgegenüber ist es Aufgabe der Erfindung, in einer Bandbeschickungsanlage durch die im Oberbegriff des. Anspruchs 1 angegebene Vorrichtung das vorbeilaufende Metallband im Bereich der Bandkantenabfrageeinrichtung zu führen und in bezug auf eine nachfolgende Bearbeitungsstation mittengleich auszurichten. Insbesondere sollen zuvor miteinander verschweißte Metallbänder unterschiedlicher Breite mittig zur nachfolgenden Bearbeitungsstation ausgerichtet und geführt werden.In contrast, it is an object of the invention to guide the passing metal strip in the area of the strip edge interrogation device in a strip loading system by means of the device specified in the preamble of claim 1 and to align it in the middle with respect to a subsequent processing station. In particular, metal strips of different widths previously welded to one another are to be aligned and guided centrally to the subsequent processing station.

Diese Aufgabe wird gelöst durch die im Kennzeichen des Anspruchs 1 angegebenen Merkmale.This object is achieved by the features specified in the characterizing part of claim 1.

Hierdurch wird ein Verlaufen des Metallbandes aus der limitierten Spur vermieden. Die Voreinstellung erfolgt mit einem schnellen Öffnen und Schließen der Führungsmittel. Die Fein(-end) einstellung erfolgt langsam über unabhängige Meßwertaufnehmer. Durch diegestufteQuerverstellung ist somit in vorteilhafter Weise ein Beschädigen des Metallbandes vermieden und ein führungsgenaues Zustellen auf eine Bearbeitungsstation, z. B. ein Pressenwerkzeug, möglich. In überraschender Weise kann die Einrichtung zum Führen metallischer Bahnen für einen Zick-Zack-Durchlauf durch eine Schnittpresse genutzt werden.This prevents the metal strip from running out of the limited track. The presetting is done with a quick opening and closing of the guide means. The fine (-end) setting is done slowly via independent sensors. By means of the stepped transverse adjustment, damage to the metal strip is avoided in an advantageous manner and a precise delivery to a processing station, e.g. B. a press tool possible. The device for guiding metallic webs can surprisingly be used for a zigzag pass through a cutting press.

Mit der Vorrichtung nach Patentanspruch 2 ist diese für eine Verwendung in Pressenstraßen geeignet.With the device according to claim 2, it is suitable for use in press lines.

Die Anordnungen nach den Patentansprüchen 3 und 4 ermöglichen die Verwendung von Folienbahnen ohne Beschädigung der Bandkante.The arrangements according to claims 3 and 4 enable the use of film webs without damaging the band edge.

Nach Patentanspruch 5 werden genau ansteuerbare Stellmittel unter Nutzung pressenseitig vorhandener Möglichkeiten verwendet. Der diesen Einrichtungen anhaftende Mangel der Leckage wird durch eine Bremseinheit ausgeglichen, die für Nachlaufregelungen bei z. B. dünnen Folienbahnen wiederum nicht aktiviert werden muß.According to claim 5 are exactly on controllable actuators are used, using the press's available options. The inherent lack of leakage is compensated for by a brake unit, which is used for back-up controls at z. B. again thin film webs need not be activated.

Das Merkmal nach Patentanspruch 6 geht ein auf pressenspezifische Gegebenheiten und ermöglicht ein Ausrichten des Metallbandes auf von Werkzeug zu Werkzeug unterschiedliche Mitten sowie einen Zick-Zack-Durchlauf.The feature according to claim 6 is based on press-specific circumstances and enables the metal strip to be aligned with different centers from tool to tool and with a zigzag pass.

Im folgenden soll die Erfindung anhand von in der Zeichnung dargestellten Ausführungsbeispielen näher erläutert werden. Dabei zeigen :

  • Fig. 1 ein erstes Ausführungsbeispiel der Erfindung,
  • Fig. 2 eine mögliche Auswerteschaltung elektrischer Art,
  • Fig. 3 das in Fig. 1 gezeigte Ausführungsbeispiel unter Verwendung unterschiedlich breiter Metallbahnen und
  • Fig. 4 ein weiteres Ausführungsbeispiel der Erfindung.
The invention will be explained in more detail below with reference to exemplary embodiments shown in the drawing. Show:
  • 1 shows a first embodiment of the invention,
  • 2 shows a possible evaluation circuit of an electrical type,
  • Fig. 3 shows the embodiment shown in Fig. 1 using metal webs of different widths and
  • Fig. 4 shows another embodiment of the invention.

Das von einer Haspel kommende und vom Coil ablaufende Band 2 metallischer und ggf. nichtmetallischer Art wird nach dem Darstellungsbeispiel in Fig. 1 Richtwalzen oder einer Schweißapparatur 4 zugeführt und tritt danach in den Bereich der Bandkantenabfrageeinrichtung 1 und 10.The strip 2 of a metallic and possibly non-metallic type coming from a reel and running off the coil is fed according to the example shown in FIG. 1 straightening rollers or a welding apparatus 4 and then enters the area of the strip edge interrogation devices 1 and 10.

Die Bandkantenabfrageeinrichtungen sind hier einer Bearbeitungsstation, beispielsweise einem Schnittwerkzeug 55 (Fig. 4), vorgeschaltet. An das Ende des metallischen Bandes 2 ist während einer kurzen Stillstandsphase das Folgeband 3 angeschweißt worden, Schweißnaht 5. Die Bänder werden nacheinander beim weiteren Durchlauf, Pfeil 6, von den Bandkantenabfrageeinrichtungen erfaßt und geführt. Die Bandkantenabfrageeinrichtungen umfassen zwei in Richtung der Pfeile 57 bewegliche Träger 8, 9. Die Träger sind über einen Zahnstangen- 11, Zahnrad- 12, Wellen- 13 Antrieb mit einem Verstellmittel, beispielsweise einem links-rechts-gängigen Hydraulikmotor 14 verbunden. Dieser Antrieb über gegenläufige Zahnstangen ermöglicht stets eine mittige Verstellung.The strip edge interrogation devices are upstream of a processing station, for example a cutting tool 55 (FIG. 4). During a short standstill phase, the subsequent strip 3, weld seam 5, was welded onto the end of the metallic strip 2. The strips are successively detected and guided by the strip edge interrogators during the further passage, arrow 6. The strip edge interrogation devices comprise two carriers 8, 9 movable in the direction of the arrows 57. The carriers are connected via a rack-11, gear-12, shaft-13 drive to an adjusting means, for example a hydraulic motor 14 that runs to the left and right. This drive via counter-rotating racks always enables central adjustment.

Die Träger tragen Meßwertaufnehmer 17, 18, 19, 21, Sensoren induktiver, fotooptischer oder anderer bekannter Art, die paarweise und in Richtung 57 der Querverstellbewegung hintereinander angeordnet sind sowie Laufrollen 22, deren Drehachse um 90 Winkelgrad zu der Breitenerstreckung des metallischen Bandes 2, 3 ausgerichtet sind zur Anlage der Bandkanten 7 des metallischen Bandes im Betrieb. Die Meßwertaufnehmer 19, 21 können im Mittenmaß ihrer Meßflächen in der durch die Rollen 22 gebildeten Rollenbahnebene angeordnet sein. Der Hydraulikmotor 14 ist über eine hydraulische Ansteuerschaltung für schnellen und langsamen Links- und Rechtslauf ansteuerbar. Die langsame Offen-Bewegung wird im allgemeinen nicht genutzt. In die von der Hauptdruckleitung 23 kommenden und in die zur Druckmittelablaßleitung 24 führenden Leitungen 33, 34 sind je ein 4/3 Wegeventil 27, 28, über die Leitungen 30 ansteuerbare Rückschlagventile 29, Drosseln 32 und parallel zu diesen geschaltete Rückschlagventile 31 geschaltet. Die Drosseln 32 dienen der Geschwindigkeitseinstellung des Hydraulikmotors 14. Der Hydraulikmotor 14 ist für die Zeit seines Stillstandes vermittels Bremse 16, die über ein in die Druckleitung 36 geschaltetes 3/2 Wegeventil 26 beaufschlagbar und druckentlastbar ist, zumindest zeitweise zwangsgehalten. Die elektrische Ansteuerung der Ventile über Magnete 46, 47, 48, 49, 51 erfolgt vermittels der Auswerteschaltung nach Fig. 2.The carriers carry transducers 17, 18, 19, 21, sensors of inductive, photo-optical or other known type, which are arranged in pairs and in the direction 57 of the transverse adjustment movement one behind the other, and rollers 22, whose axis of rotation by 90 degrees to the width extension of the metallic strip 2, 3 are aligned to abut the strip edges 7 of the metallic strip in operation. The transducers 19, 21 can be arranged in the center dimension of their measuring surfaces in the roller conveyor plane formed by the rollers 22. The hydraulic motor 14 can be controlled via a hydraulic control circuit for fast and slow left and right rotation. The slow open movement is generally not used. In the lines 33, 34 coming from the main pressure line 23 and leading to the pressure medium discharge line 24, a 4/3 directional control valve 27, 28, check valves 29, throttles 32, which can be controlled via the lines 30, and check valves 31 connected in parallel with them are connected. The throttles 32 are used to adjust the speed of the hydraulic motor 14. The hydraulic motor 14 is at least temporarily held at least temporarily by means of the brake 16, which can be acted upon and relieved of pressure via a 3/2-way valve 26 connected to the pressure line 36. The valves are electrically controlled via magnets 46, 47, 48, 49, 51 by means of the evaluation circuit according to FIG. 2.

Fig. 3 zeigt die Bandkantenahfrageeinrichtungen in einer Offenstellung der Verstelleinrichtung 8, 9, 11, 12, 13, 14 sowie der mit dieser zwangläufig mitgeführten Meßwertaufnehmer 17, 18, 19, 21. Weiterhin wird die Verwendung von metallischen Bändern 2, 3 unterschiedlicher Breite gezeigt. Im übrigen werden für Fig. 2 und die weiteren Figuren für gleiche Bauteile gleiche Kennziffern benutzt.Fig. 3 shows the strip edge interrogation devices in an open position of the adjusting device 8, 9, 11, 12, 13, 14 and the transducers 17, 18, 19, 21 that are inevitably carried with them. The use of metallic strips 2, 3 of different widths is also shown . Otherwise, the same reference numbers are used for FIG. 2 and the other figures for the same components.

Fig. 4 zeigt die Möglichkeit der Ausrichtung der Verstelleinrichtung 8, 9, 11, 12, 13, 14 auf das hier dargestellte Werkzeug 55. Die Verstelleinrichtung einschließlich der Bandkantenabfrageeinrichtungen ist in gestellfesten Gleitführungen 53 zwangsgeführt und kann z. B. vermittels einer doppeltwirkenden Zylinder-Kolben-Einheit 54 in Pfeilrichtung 56 bis zum Übereinstimmen der Mitten 58, 59 von Bandkantenafrageeinrichtungen und Werkzeug verstellt werden.Fig. 4 shows the possibility of aligning the adjusting device 8, 9, 11, 12, 13, 14 on the tool 55 shown here. The adjusting device including the belt edge interrogation devices is positively guided in slide guides 53 fixed to the frame and can e.g. B. by means of a double-acting cylinder-piston unit 54 in the direction of arrow 56 to match the centers 58, 59 of strip edge inquiry devices and tools.

Die in Fig. 2 gezeigte Auswerteschaltung umfaßt einen elektronischen Baustein 41 zum Abfragen und Speichern der Schaltzustände der angeschlossenen Baueinheiten und zur Umwandlung in Ausgangssignale. Dieser Baustein 41 arbeitet in der Art bistabiler Kippstufen - Flipflops -, wobei ein anstehendes Signal am Eingang am Ausgang erhalten bleibt und so den gewünschten Schaltzustand, schneller Vor- Rücklauf, langsamer Vor- Rücklauf aufrecht erhält, bis sich der Eingang durch Setzen eines anderen Signales oder durch Rücksetzen, beispielsweise durch die Eingabe über die Tastatur43 oder interne Zeitglieder ändert.The evaluation circuit shown in FIG. 2 comprises an electronic component 41 for querying and storing the switching states of the connected units and for converting them into output signals. This module 41 operates in the manner of bistable flip-flops - flip-flops - whereby an existing signal at the input at the output is retained and thus maintains the desired switching state, fast forward, slow forward, until the input is maintained by setting another signal or by resetting, for example by entering via the keyboard43 or internal timers.

Die Schaltung kann, wie gezeigt, digital aber auch analog aufgebaut sein. An den Eingang der Kippstufe 41 sind neben einem z. B. induktiven Meßwertaufnehmer 42 zum Erfassen der Offenzustandes der Bandkantenabfrageeinrichtungen, die als Fotoelemente bzw. Opto-Koppier symbolisierten Meßwertaufnehmer 17, 18, 19, 21 sowie die Tastatur 43 für manuelle Eingabe, beispielsweise für einen Startbefehl, der grundsätzlich die Bandkantenabfrageeinrichtungen in eine Offenstellung bringt, angeschlossen. An die Ausgänge der Kippstufe 41 sind über Treiberverstärker 44 die Magnete 46, 47, 48. 49 und 51 der Ventile im Ansteuerkreis des Hydraulikmotors 14 geschaltet.As shown, the circuit can be constructed digitally but also analog. At the input of the flip-flop 41 are z. B. inductive transducers 42 for detecting the open state of the strip edge interrogation devices, the transducers symbolized as photo elements or optocouplers 17, 18, 19, 21 and the keyboard 43 for manual input, for example for a start command, which basically brings the strip edge interrogation devices into an open position , connected. The magnets 46, 47, 48, 49 and 51 of the valves in the control circuit of the hydraulic motor 14 are connected to the outputs of the flip-flop 41 via driver amplifiers 44.

Ausgehend von der in Fig. 3 gezeigten Möglichkeit, unterschiedlich breite metallische Bänder einer Bearbeitungsstation zuzuführen, wird die Auswerteschaltung nach Fig. 2 im folgenden näher erläutert. Das Offensignal kann über die Tastatur 43, von der Schweißapparatur 4 oder als interner Befehl des Bausteines 41 erfolgen und bewirkt ein schnelles Öffnen der Verstelleinrichtung. Hierbei werden die von beiden Ventilen 27, 28 kommenden und zum Hydraulikmotor 14führenden Leitungen 34 durch Beaufschlagen der Magnetspulen 48, 51 an die Druckleitung 23 gelegt. Als Folge eines digitalen Signals am Ausgang des Meßwertaufnehmers 42 werden nun die Ventile 27, 28 umgeschaltet, indem Spannung an die Magnetspulen 47, 49 gelegt wird, so daß die Drehumkehr des Hydraulikmotors 14 bewirkt wird. Überfährt beim so erfolgenden Schließen der Verselleinrichtung einer der beiden Meßwertaufnehmer 17, 18 eine Bandkante, wird als Folge des nun am Eingang des Bausteines 41 anstehenden digitalen Signales ein Magnetventil 28 abgeschaltet, wodurch der Hydraulikmotor 14 bis zum Auftreten eines Signales eines der Meßwertaufnehmer 18, 21, und zwar des Meßwertaufnehmers des zuvor kein Signal abgebenden Paares, in einem Langsamlauf das sich an einer Rollenbahn anlegende metallische Band 3 quer bewegt.Starting from the possibility shown in FIG. 3 of feeding metallic strips of different widths to a processing station, the evaluation circuit according to FIG. 2 is explained in more detail below. The open signal can be via the Keyboard 43, from the welding apparatus 4 or as an internal command of the block 41 and causes a quick opening of the adjustment device. Here, the lines 34 coming from both valves 27, 28 and leading to the hydraulic motor 14 are placed on the pressure line 23 by acting on the solenoid coils 48, 51. As a result of a digital signal at the output of the sensor 42, the valves 27, 28 are now switched over by applying voltage to the solenoids 47, 49, so that the rotation of the hydraulic motor 14 is effected. If one of the two transducers 17, 18 passes over a band edge when the adjusting device is closed in this way, a magnetic valve 28 is switched off as a result of the digital signal now present at the input of the component 41, whereby the hydraulic motor 14 until a signal of one of the transducers 18, 21 occurs , namely the transducer of the pair previously not emitting a signal, in a slow motion the metallic band 3 resting on a roller conveyor moves transversely.

Ein Öffnen der Träger 8; 9 im Eilgang setzt voraus, daß an dem induktiven Meßwertaufnehmer 42 kein Signal ansteht und über die Tastatur 43, von dem Vorschaltgerät, der Schweißapparatur 4 oder über ein internes Zeitglied, das dem Baustein 41 zugeschaltet ist, ein Signal auf den Speicher gegeben wird. Die Signalgabe durch den induktiven Meßwertaufnehmer 42 bewirkt ein Schließen der Träger im Eilgang. Das setzt voraus, daß an keinem der Meßwertaufnehmer 17, 18 ein Signal ansteht.An opening of the carrier 8 ; 9 in rapid traverse requires that no signal is present at the inductive transducer 42 and a signal is given to the memory via the keyboard 43, the ballast, the welding apparatus 4 or an internal timer which is connected to the block 41. The signal from the inductive sensor 42 causes the carrier to close in rapid traverse. This presupposes that no signal is present at any of the sensors 17, 18.

Claims (6)

1. Device for aligning the centre position (58) of a metal strip (2, 3), which is running off a coil, with the centre position (59) of a machining station (55), comprising an adjusting device (8, 9, 11, 12, 13, 14) for transversely adjusting the metal strip (2, 3), a strip edge sensing device for detecting the two strip edges (7), the sensing means of which (17, 19 and 18, 21) are attached transversely to the direction of passage (6) of the metal strip (2, 3) behind one another on carriers (8, 9) which are adjustable with respect to one another in this direction (57) and symmetrically by equal distances, and comprising an evaluation circuit (41) for the signals coming from the sensing means (17, 18, 19, 21). for triggering an alignment movement of the metal strip (2, 3), characterized in
that the carriers (8, 9) for aligning and guiding 'the metal strip (2, 3) can be placed against the strip edges (7) of the latter,
that an actuator (14) and means (27 to 32) for controlling the actuator (14) are provided for adjusting the carriers (8, 9) at two traversing speeds of different rapidity towards one another and away from one another, and
that the evaluation circuit (41) comprises circuit means
for converting a signal, which is manually triggered via a key input (43), from an attachment set (4) or possibly internally int he circuit, into a rapid opening movement of the carriers (8, 9) with a subsequent rapid closing movement of the carriers (8, 9) which is automatically triggered following a signal via a measuring sensor (42) or following a signal of a manual input (43),
for converting a signal of the sensing means (17, 18), which first detects one strip edge (7), into a slow closing movement of the carrier (8, 9) and
for converting a signal of the sensing means (19, 21), which last detects the strip edge (7) opposite to the first strip edge (7), into a stop of the carriers (8, 9).
2. Device according to Claim 1, characterized in that the strip edge sensing devices (1, 10) are arranged between a welding apparatus (4) and the first machining station (55).
3. Device according to Claim 1, characterized in that the strip guide of each adjusting device is formed of a roller conveyor (22) which is aligned perpendicularly to the metal strip (2, 3) and the centre of each sensing means (19, 21) last detecting the respective strip edge (7) is arranged in the plane of the roller conveyor.
4. Device according to Claim 3, characterized in that sensing means (19, 21) are arranged in the projection of the roller conveyor plane.
5. Device according to Claim 1, characterized in that the adjusting device (8, 9, 11, 12, 13, 14) exhibits an hydraulically active actuating motor (14) and that the latter can be braked via a braking unit (16) at least at times of a standstill.
6. Device according to Claim 1, characterized in that the centre position (58) of the adjusting device (8, 9, 11, 12, 13, 14) can be adjusted with respect to the centre position (59) of the machining stage (55) via an actuator (54).
EP84108662A 1983-07-27 1984-07-21 Device for adjusting a metal band in a processing station Expired EP0132819B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833326955 DE3326955A1 (en) 1983-07-27 1983-07-27 DEVICE FOR ALIGNING A METAL STRIP ON A MACHINING STATION
DE3326955 1983-07-27

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EP0132819A1 EP0132819A1 (en) 1985-02-13
EP0132819B1 true EP0132819B1 (en) 1987-12-23

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EP84108662A Expired EP0132819B1 (en) 1983-07-27 1984-07-21 Device for adjusting a metal band in a processing station

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DE (2) DE3326955A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19511189A1 (en) * 1995-03-27 1996-10-02 Rohde & Schwarz Computer-controlled strip working

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
CH665999A5 (en) * 1986-03-17 1988-06-30 Bobst Sa METHOD AND DEVICE FOR CONTROLLING THE ADJUSTMENT OF THE ORGANS OF A MACHINE FOR GRAPHIC ARTS AND CARDBOARDING.
ATE126739T1 (en) * 1990-10-12 1995-09-15 Bruderer Ag METHOD FOR FEEDING A PROCESSING MACHINE WITH A FINE CENTERING STEP AND DEVICE THEREFOR.
CN102950168B (en) * 2011-08-23 2014-11-05 上海宝钢设备检修有限公司 Automatic centering logic numerical control device of cold-rolled strip steel uncoiler
SG10201704185YA (en) * 2017-05-23 2018-12-28 Hock Hai Low Method of aligning a flat or profiled metal sheet

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CH251942A (en) * 1944-06-01 1947-11-30 Duralumin & Du Cuivre Comp Gen Device for centering and guiding ingots and sheets on rolling mills.
US2842361A (en) * 1956-02-13 1958-07-08 Armco Steel Corp Automatic strip alignment control
AT224058B (en) * 1961-02-22 1962-11-12 Voest Ag Device for lateral guidance of sheet metal strips in rolling and skin-pass stands or the like.
US3610546A (en) * 1969-08-13 1971-10-05 Francis J Mcgorry Automatic strip alignment system
DE2937661A1 (en) * 1979-09-18 1981-04-02 Focke & Co, 2810 Verden BOBINE HOLDER, ESPECIALLY FOR PACKAGING MACHINES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19511189A1 (en) * 1995-03-27 1996-10-02 Rohde & Schwarz Computer-controlled strip working

Also Published As

Publication number Publication date
DE3326955A1 (en) 1985-02-07
EP0132819A1 (en) 1985-02-13
DE3468181D1 (en) 1988-02-04

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