EP0307603B1 - Wire-rolling mill - Google Patents
Wire-rolling mill Download PDFInfo
- Publication number
- EP0307603B1 EP0307603B1 EP88112610A EP88112610A EP0307603B1 EP 0307603 B1 EP0307603 B1 EP 0307603B1 EP 88112610 A EP88112610 A EP 88112610A EP 88112610 A EP88112610 A EP 88112610A EP 0307603 B1 EP0307603 B1 EP 0307603B1
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- EP
- European Patent Office
- Prior art keywords
- wire
- angular rotation
- rolling mill
- rotation position
- control device
- 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
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- 238000005096 rolling process Methods 0.000 title claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 1
- 238000007493 shaping process Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 21
- 238000013461 design Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/70—Length control
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- 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
- B21C47/02—Winding-up or coiling
- B21C47/10—Winding-up or coiling by means of a moving guide
- B21C47/14—Winding-up or coiling by means of a moving guide by means of a rotating guide, e.g. laying the material around a stationary reel or drum
- B21C47/143—Winding-up or coiling by means of a moving guide by means of a rotating guide, e.g. laying the material around a stationary reel or drum the guide being a tube
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B2045/0236—Laying heads for overlapping rings on cooling conveyor
Definitions
- the invention relates to a wire rolling mill with a plurality of roughing stands, a cropping shear, a finishing block, a winding layer with a laying pipe and with a drive consisting of a winding layer motor and a winding layer gear, a discharge conveyor for the finished rolled wire laid out in turns, which plant parts are arranged one behind the other in the wire running direction, and with one Control device with a computer which controls the cropping shears according to a predetermined rolling program by means of a cutting command, the winding layer having a rotation angle position transmitter, the angular positions of which correspond to the laying tube positions and which is connected to the control device, the signals of the rotation angle position transmitter with the rolling program for a position cutting command for the cropping shears processed.
- the discharge conveyor usually consists of several parallel pulling devices. It can also be designed as a roller table.
- Such wire rolling mills operate at high rolling speeds.
- the division of a cropping length in front of the finishing block is necessary in such wire rolling mills because the beginnings of the wire strands which leave the roughing mill have irregularities which impair the service life of the rolls or calibres in the finishing block.
- there is a risk that a wire head that is uncontrolled by the winding layer to the discharge conveyor will not deposit without problems. This can lead to the fact that a complete wire strand cannot be combined into bundles and can be discarded as scrap got to.
- an operator stands at the winding layer, who grasps the wire head with a tool and deposits it according to the winding in such a way that the finished rolled wire is fanned out without interference in defined turns.
- the measuring devices in particular the rotary angle position transmitter, and also other setting devices work analogously.
- the rotary angle position sensor is arranged in the immediate area of the winding layer and is accordingly exposed to considerable heat loads and fluctuating temperatures.
- the measurement accuracy and accordingly the control of the wire rod mill as a whole can be impaired.
- the computer takes into account a time span for the computer cut command, which is determined in accordance with the distance between the cropping shear in front of the finishing block and the winding layer, the speed of the wire and the laying tube position and is selected such that the wire head is in a laying tube position sector can hit the discharge conveyor, in which experience shows that the wire head is laid down in accordance with the wind and without problems.
- experience from earlier times (DE-PS 20 38 747) is taken into account, which was obtained in rolling mills with a significantly lower rolling speed, in which the shears could still be arranged behind the finishing block.
- the object of the invention is to improve a wire rolling mill of the type described in the introduction in such a way that system-related malfunctions are excluded.
- the winding layer has a rotary angle position transmitter working with pulses, which emits 360 equidistant pulses and a defined zero pulse per revolution, that a counter is arranged between the rotary angle position transmitter and an electronic AND logic circuit of the control device, and that the counter with a Preselection is equipped with which the predeterminable laying pipe position sector and the sector width can be set.
- the counter can be set to a predefined, counting down value after each revolution of the rotary angle position encoder or set to zero when the counting is added.
- the preselection device should expediently be able to divide each unrotation of the rotation angle position transmitter into a predetermined number of laying tube position sectors, the setting of the sector width of these laying tube position sectors on the preselection device being changeable with increasing wire thickness.
- the arrangement will be such that the drive of the winding layer has the rotary angle position sensor.
- the rotary angle position transmitter is placed on a shaft of the drive with the interposition of an adapter gear, the adapter gear accurately reproducing the positions of the rotary angle position transmitter and the laying tube, including a zero position.
- a wire rolling mill for all wire thicknesses to be controlled, it can be visually determined in which laying tube position sectors the wire head of a new wire strand has to emerge after cutting off a cropping length, so that a winding-like and trouble-free depositing takes place on the discharge conveyor.
- the design is such that the control device subjects the computer cut command and the digital impulses of the laying tube position sectors to the AND link and the cropping shear consequently performs the cropping cut at the right moment.
- the wire rolling mill shown is equipped with a plurality of roughing stands 1, a cropping shear 2, compensating device 3, a finishing block 4 with eight stands 5 in the exemplary embodiment, a winding layer 6 with a laying pipe 7, and a drive comprising a winding layer motor 8 and a winding layer transmission 9 and a discharge conveyor 10 for the Finished rolled wire D equipped. Only two last of the roughing stands 1 are drawn. There is a cooling section between prefabricated block 4 and winding layer 6. A driver 11 is connected upstream of the winding layer 6.
- the wire rolling mill has a control device 12 with a computer 13. The computer 13 controls the cropping shear 2 according to a predetermined rolling program by means of a computer cut command.
- the cropping shear 2 divides a cropping length from the start of a wire strand before it enters the finishing block 4 in accordance with the computer cut command. This creates the wire head of the wire D to be laid out in turns.
- the top length is matched in a special way to the position of the laying tube 7. It goes without saying that the cut cropping is discarded and removed, as indicated in Fig. 1 by an arrow behind the cropping shear 2.
- the winding layer 6 has a rotary angle position sensor 14 which works with digital pulses and which is connected to the control device 12.
- the angular positions of the rotational angle position transmitter 14 correspond to the positions of the laying tube 7.
- the control device 12 links the computer cut command and the digital pulses of a predefinable laying tube position sector S by means of an electronic AND logic circuit 15 to the position command.
- the cropping shear 2 only responds to the position cut command.
- the rotational angle position sensor 14 is integrated with the drive of the winding layer.
- the rotary angle position sensor 14 is placed on a shaft 17 of the drive with the interposition of an adapter gear 16.
- the adapter gear corresponds mathematically exactly to the winding laying gear.
- the arrangement is such that the adapter gear 16 synchronizes the positions of the rotational angle position sensor 14 and the laying tube 7, including a zero position. 360 equidistant pulses and a defined zero pulse may be removable from the rotation angle position transmitter 14 per revolution.
- a counter 18 which resets after each rotation of the rotation angle position sensor 14 and thus of the laying tube 7, the counter 18 being equipped with a preselection device with which the predefinable laying tube position sector S and Sector width B are adjustable.
- the preselection device divided each revolution of the rotational angle position sensor 14 and thus of the laying tube 7 into a predetermined number of laying tube position sectors.
- the sector width B can be changed with the increasing wire thickness.
- the laying tube position sectors from which the wire head must exit so that the individual wire strands can be deposited without problems are determined when the wire rolling mill is retracted.
- Such a laying pipe position sector S is indicated in FIG. 3.
- the sector width B which can also be seen there is therefore chosen differently in accordance with the wire thicknesses, so that it is always possible to work with a short cropping length.
- the values once determined are independent of the rolling speed, but change somewhat over time as a result of caliber wear. The corrections required from this can easily be corrected by changing the position of the laying tube position sector in the circulation or increasing the sector width B.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coiling Of Filamentary Materials In General (AREA)
- Metal Rolling (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
- Control Of Metal Rolling (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Wire Processing (AREA)
Abstract
Description
Die Erfindung betrifft ein Drahtwalzwerk mit einer Mehrzahl von Vorwalzgerüsten, einer Schopfschere, einem Fertigblock, einem Windungsleger mit Legerohr sowie mit Antrieb aus Windungslegermotor und Windungslegergetriebe, einem Abführförderer für den in Windungen ausgelegten fertiggewalzten Draht, welche Anlagenteile in Drahtlaufrichtung hintereinander angeordnet sind, sowie mit einer Steuereinrichtung mit Rechner, der die Schopfschere nach Maßgabe eines vorgegebenen Walzprogrammes durch einen Schnittbefehl steuert, wobei der Windungsleger einen Drehwinkelpositionsgeber aufweist, dessen Winkelpositionen den Legerohrpositionen entsprechen und der mit der Steuereinrichtung verbunden ist, die Signale des Drehwinkelpositionsgebers mit dem Walzprogramm zu einem Positionsschnittbefehl für die Schopfschere verarbeitet. - Die Schopfschere befindet sich vor dem Fertigblock. Der Abführförderer besteht zumeist aus mehreren parallelen Zugimitteln. Er kann auch als Rollgang ausgeführt sein.The invention relates to a wire rolling mill with a plurality of roughing stands, a cropping shear, a finishing block, a winding layer with a laying pipe and with a drive consisting of a winding layer motor and a winding layer gear, a discharge conveyor for the finished rolled wire laid out in turns, which plant parts are arranged one behind the other in the wire running direction, and with one Control device with a computer which controls the cropping shears according to a predetermined rolling program by means of a cutting command, the winding layer having a rotation angle position transmitter, the angular positions of which correspond to the laying tube positions and which is connected to the control device, the signals of the rotation angle position transmitter with the rolling program for a position cutting command for the cropping shears processed. - The cropping shear is in front of the finishing block. The discharge conveyor usually consists of several parallel pulling devices. It can also be designed as a roller table.
Derartige Drahtwalzwerke arbeiten mit hoher Walzgeschwindigkeit. Die Abteilung einer Schopflänge vor dem Fertigblock ist bei solchen Drahtwalzwerken erforderlich, weil die Anfänge der Drahtstränge, die das Vorwalzwerk verlassen, Unregelmäßigkeiten aufweisen, die die Standzeit der Walzen oder Kaliber im Fertigblock beeinträchtigen. Andererseits besteht die Gefahr, daß ein vom Windungsleger unkontrolliert dem Abführförderer aufgegebener Drahtkopf sich nicht störungsfrei ablegt. Das kann dazu führen, daß ein vollständiger Drahtstrang nicht zu Bündeln zusammengefaßt werden kann und als Schrott verworfen werden muß. Um solche Störungen zu vermeiden, steht am Windungsleger eine Bedienungsperson, die den Drahtkopf mit einem Werkzeug erfaßt und windungsgemäß so ablegt, daß ein störungsfreies Ausfächern des fertiggewalzten Drahtes in definierten Windungen erfolgt.Such wire rolling mills operate at high rolling speeds. The division of a cropping length in front of the finishing block is necessary in such wire rolling mills because the beginnings of the wire strands which leave the roughing mill have irregularities which impair the service life of the rolls or calibres in the finishing block. On the other hand, there is a risk that a wire head that is uncontrolled by the winding layer to the discharge conveyor will not deposit without problems. This can lead to the fact that a complete wire strand cannot be combined into bundles and can be discarded as scrap got to. In order to avoid such faults, an operator stands at the winding layer, who grasps the wire head with a tool and deposits it according to the winding in such a way that the finished rolled wire is fanned out without interference in defined turns.
Bei einem Drahtwalzwerk der eingangs beschriebenen Gattung (FR-A 24 59 085) arbeiten die Meßeinrichtungen, insbesondere der Drehwinkelpositionsgeber, und auch andere Einstelleinrichtungen analog. Der Drehwinkelpositionsgeber ist im unmittelbaren Bereich des Windungslegers angeordnet und dementsprechend erheblichen Wärmebelastungen sowie auch schwankenden Temperaturen ausgesetzt. Bei analoger Meßtechnik kann dadurch die Meßgenauigkeit und dementsprechend die Steuerung des Drahtwalzwerkes insgesamt beeinträchtigt werden.In a wire rolling mill of the type described at the beginning (FR-A 24 59 085), the measuring devices, in particular the rotary angle position transmitter, and also other setting devices work analogously. The rotary angle position sensor is arranged in the immediate area of the winding layer and is accordingly exposed to considerable heat loads and fluctuating temperatures. In the case of analog measurement technology, the measurement accuracy and accordingly the control of the wire rod mill as a whole can be impaired.
Bei nicht zum Stand der Technik gehörenden Versuchen berücksichtigt der Rechner für den Rechnerschnittbefehl eine Zeitspanne, die nach Maßgabe des Abstandes zwischen der Schopfschere vor dem Fertigblock und dem Windungsleger, der Geschwindigkeit des Drahtes und der Legerohrposition festgelegt wird und so gewählt ist, daß der Drahtkopf in einem Legerohrpositionssektor auf den Abführförderer auftreffen kann, in dem nach der Erfahrung ein windungsgemäßes und störungsfreies Ablegen des Drahtkopfes erfolgt. Insoweit berücksichtigt man Erfahrungen aus früherer Zeit (DE-PS 20 38 747), die bei Walzwerken mit wesentlich geringerer Walzgeschwindigkeit gewonnen wurden, bei denen die Schere noch hinter dem Fertigblock angeordnet werden konnte.In experiments that are not part of the prior art, the computer takes into account a time span for the computer cut command, which is determined in accordance with the distance between the cropping shear in front of the finishing block and the winding layer, the speed of the wire and the laying tube position and is selected such that the wire head is in a laying tube position sector can hit the discharge conveyor, in which experience shows that the wire head is laid down in accordance with the wind and without problems. To this extent, experience from earlier times (DE-PS 20 38 747) is taken into account, which was obtained in rolling mills with a significantly lower rolling speed, in which the shears could still be arranged behind the finishing block.
Nichtsdestoweniger traten bei den Versuchen an den gattungsgemäßen Walzwerken mit ihrer hohen Walzgeschwindigkeit in der Praxis die beschriebenen Störungen in statistischer Verteilung auf. Sie beruhen auf statistischen Schwankungen von Parametern, die das Programm mit dem der Rechner arbeitet, nicht berücksichtigen kann.Nonetheless, in the tests on the generic rolling mills with their high rolling speed, the described disturbances occurred in statistical distribution in practice. They are based on statistical fluctuations in parameters that the program with which the computer works cannot take into account.
Aufgabe der Erfindung ist es, ein Drahtwalzwerk der eingangs beschriebenen Gattung so zu verbessern, daß systembedingte Störungen ausgeschlossen sind.The object of the invention is to improve a wire rolling mill of the type described in the introduction in such a way that system-related malfunctions are excluded.
Diese Aufgabe wird dadurch gelöst, daß der Windungsleger einen mit Impulsen arbeitenden Drehwinkelpositionsgeber aufweist, der pro Umdrehung 360 äquidistante Impulse und einen definierten Nullimpuls abgibt, daß zwischen dem Drehwinkelpositionsgeber und einer elektronischen UND-Verknüpfungsschaltung der Steuereinrichtung ein Zähler angeordnet ist und daß der Zähler mit einer Vorwähleinrichtung ausgerüstet ist, mit der der vorgebbare Legerohrpositionssektor sowie die Sektorbreite einstellbar sind. Der Zähler kann nach jeder Umdrehung des Drehwinkelpositionsgebers auf einen vorgegebenen, rückwärts zählenden Wert gesetzt oder bei addierendem Zählen auf Null gesetz werden. Durch die Vorwähleinrichtung sollte zweckmäßigerweise jede Unidrehung des Drehwinkelpositionsgebers in eine vorgegebene Anzahl von Legerohrpositionssektoren teilbar sein, wobei die Einstellung der Sektorbreite dieser Legerohrpositionssektoren an der Vorwähleinrichtung mit zunehmender Drahtdicke veränderbar ist.This object is achieved in that the winding layer has a rotary angle position transmitter working with pulses, which emits 360 equidistant pulses and a defined zero pulse per revolution, that a counter is arranged between the rotary angle position transmitter and an electronic AND logic circuit of the control device, and that the counter with a Preselection is equipped with which the predeterminable laying pipe position sector and the sector width can be set. The counter can be set to a predefined, counting down value after each revolution of the rotary angle position encoder or set to zero when the counting is added. The preselection device should expediently be able to divide each unrotation of the rotation angle position transmitter into a predetermined number of laying tube position sectors, the setting of the sector width of these laying tube position sectors on the preselection device being changeable with increasing wire thickness.
Im einzelnen bestehen im Rahmen der Erfindung mehrere Möglichkeiten der weiteren Ausbildung und Gestaltung. Im allgemeinen wird man die Anordnung so treffen, daß der Antrieb des Windungslegers den Drehwinkelpositionsgeber aufweist. Nach bevorzugter Ausführungsform der Erfindung ist dabei der Drehwinkelpositionsgeber unter Zwischenschaltung eines Adaptergetriebes auf eine Welle des Antriebes aufgesetzt, wobei das Adaptergetriebe die Positionen des Drehwinkelpositionsgebers und des Legerohres, einschließlich einer Nullage exakt wiedergibt.There are several options for further training and design within the scope of the invention. In general, the arrangement will be such that the drive of the winding layer has the rotary angle position sensor. According to a preferred embodiment of the invention, the rotary angle position transmitter is placed on a shaft of the drive with the interposition of an adapter gear, the adapter gear accurately reproducing the positions of the rotary angle position transmitter and the laying tube, including a zero position.
Bei einem erfindungsgemäßen Drahtwalzwerk kann beim Einfahren für alle zu beherrschenden Drahtdicken visuell ermittelt werden, in welchen Legerohrpositionssektoren der Drahtkopf eines neuen Drahtstranges nach Abschneiden einer Schopflänge austreten muß, damit ein windungsgemäßes und störungsfreies Ablegen auf dem Abführförderer erfolgt. Mit dieser Information wird die Auslegung so getroffen, daß die Steuereinrichtung den Rechnerschnittbefehl sowie die digitalen Impulse der Legerohrpositionssektoren der UND-Verknüpfung unterwirft und die Schopfschere folglich im richtigen Moment den Schopfschnitt durchführt.In the case of a wire rolling mill according to the invention, for all wire thicknesses to be controlled, it can be visually determined in which laying tube position sectors the wire head of a new wire strand has to emerge after cutting off a cropping length, so that a winding-like and trouble-free depositing takes place on the discharge conveyor. With this information, the design is such that the control device subjects the computer cut command and the digital impulses of the laying tube position sectors to the AND link and the cropping shear consequently performs the cropping cut at the right moment.
Die erreichten Vorteile sind darin zu sehen, daß bei dem erfindungsgemäßen Drahtwalzwerk die eingangs beschriebenen Störungen und insbesondere auch die statistisch verteilten Störungen nicht mehr auftreten.The advantages achieved can be seen in the fact that the disturbances described at the outset and in particular also the statistically distributed disturbances no longer occur in the wire rolling mill according to the invention.
Im folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung ausführlicher erläutert. Es zeigen
- Fig. 1
- das Schema eines erfindungsgemäßen Drahtwalzwerkes,
- Fig. 2
- in gegenüber der Fig. 1 vergrößertem Maßstab Einzelheiten aus dem Drahtwalzwerk der Fig. 1 in bezug auf den Windungsleger und den Drehwinkelpositionsgeber und
- Fig. 3
- in gegenüber der Fig. 1 vergrößertem Maßstab eine Draufsicht auf den Abführförderer der Fig. 1 mit Bauteilen des Windungslegers.
- Fig. 1
- the diagram of a wire rolling mill according to the invention,
- Fig. 2
- in an enlarged scale compared to FIG. 1, details from the wire-rolling mill of FIG. 1 with respect to the winding layer and the rotary angle position transmitter and
- Fig. 3
- in an enlarged scale compared to FIG. 1, a plan view of the discharge conveyor of FIG. 1 with components of the winding layer.
Das dargestellte Drahtwalzwerk ist mit einer Mehrzahl von Vorwalzgerüsten 1, einer Schopfschere 2, Ausgleichseinrichtung 3, einem Fertigblock 4 mit im Ausführungsbeispiel acht Gerüsten 5, einem Windungsleger 6 mit Legerohr 7 sowie mit Antrieb aus Windungslegermotor 8 und Windungslegergetriebe 9 und einem Abführförderer 10 für den in Windungen ausgelegten fertiggewalzten Draht D ausgerüstet. Von den Vorwalzgerüsten 1 sind lediglich zwei letzte gezeichnet. Zwischen Fertigblock 4 und Windungsleger 6 befindet sich eine Kühlstrecke. Ein Treiber 11 ist dem Windungsleger 6 vorgeschaltet. Das Drahtwalzwerk besitzt eine Steuereinrichtung 12 mit Rechner 13. Der Rechner 13 steuert die Schopfschere 2 nach Maßgabe eines vorgegebenen Walzprogramms durch einen Rechnerschnittbefehl. Die Schopfschere 2 teilt nach Maßgabe des Rechnerschnittbefehls vom Anfang eines Drahtstranges vor dessen Eintritt in den Fertigblock 4 eine Schopflänge ab. Dadurch wird der Drahtkopf des in Windungen auszulegenden Drahtes D erzeugt. Die Schopflänge ist in besonderer Weise auf die Position des Legerohres 7 abgestimmt. Es versteht sich, daß der abgeschnittene Schopf verworfen und dazu abgeführt wird, wie in Fig. 1 ein hinter der Schopfschere 2 angebrachter Pfeil andeutet.The wire rolling mill shown is equipped with a plurality of roughing stands 1, a
Der Windungsleger 6 weist wie die Fig. 2 erkennen läßt, einen mit digitalen Impulsen arbeitenden Drehwinkelpositionsgeber 14 auf, der mit der Steuereinrichtung 12 verbunden ist. Die Winkelpositionen des Drehwinkelpositionsgebers 14 entsprechen den Positionen des Legerohres 7. Die Steuereinrichtung 12 verknüpft den Rechnerschnittbefehl sowie die digitalen Impulse eines vorgebbaren Legerohrpositionssektors S durch eine elektronische UND-Verknüpfungsschaltung 15 zu dem Positionsbefehl. Die Schopfschere 2 spricht erst auf den Positionsschnittbefehl an.As can be seen in FIG. 2, the
Im Ausführungsbeispiel und nach bevorzugter Ausführungsform der Erfindung ist der Drehwinkelpositionsgeber 14 mit dem Antrieb des Windungslegers integriert. Der Drehwinkelpositionsgeber 14 ist dazu unter Zwischenschaltung eines Adaptergetriebes 16 auf eine Welle 17 des Antriebes aufgesetzt. Das Adaptergetriebe entspricht mathematisch genau dem Windungslegergetriebe. Die Anordnung ist so getroffen, daß das Adaptergetriebe 16 die Positionen des Drehwinkelpositionsgebers 14 und des Legerohres 7, einschließlich einer Nullage, synchronisiert. Von dem Drehwinkelpositionsgeber 14 mögen pro Umdrehung 360 äquidistante Impulse und ein definierter Nullimpuls abnehmbar sein. Zwischen dem Drehwinkelpositionsgeber 14 und der elektronischen UND-Verknüpfungsschaltung 15 befindet sich ein Zähler 18, der sich nach jeder Umdrehung des Drehwinkelpositionsgebers 14 und damit des Legerohres 7 zurücksetzt, wobei der Zähler 18 mit einer Vorwähleinrichtung ausgerüstet ist, mit dem der vorgebbare Legerohrpositionssektor S sowie die Sektorbreite B einstellbar sind.In the exemplary embodiment and according to a preferred embodiment of the invention, the rotational
Die Vorwähleinrichtung teilte jede Umdrehung des Drehwinkelpositionsgebers 14 und damit des Legerohres 7 in eine vorgegebene Anzahl von Legerohrpositionssektoren. Die Sektorbreite B ist mit der zunehmenden Drahtdicke veränderbar.The preselection device divided each revolution of the rotational
Die Legerohrpositionssektoren, aus denen der Drahtkopf austreten muß, damit ein Ablegen der einzelnen Drahtstränge störungsfrei erfolgt, werden beim Einfahren des Drahtwalzwerkes festgelegt. In der Fig. 3 ist ein solcher Legerohrpositionssektor S angedeutet. Die dort auch erkennbare Sektorbreite B wird nach Maßgabe der Drahtdicken auch deshalb unterschiedlich gewählt, damit stets mit geringer Schopflänge gearbeitet werden kann. Die einmal festgestellten Werte sind unabhängig von der Walzgeschwindigkeit, verändern sich allerdings im Laufe der Zeit ein wenig durch Kaliberverschleiß. Die daraus erforderlichen Korrekturen können unschwer durch Veränderung der Lage des Legerohrpositionssektors im Umlaufkreis bzw. Vergrößerung der Sektorbreite B korrigiert werden.The laying tube position sectors from which the wire head must exit so that the individual wire strands can be deposited without problems are determined when the wire rolling mill is retracted. Such a laying pipe position sector S is indicated in FIG. 3. The sector width B which can also be seen there is therefore chosen differently in accordance with the wire thicknesses, so that it is always possible to work with a short cropping length. The values once determined are independent of the rolling speed, but change somewhat over time as a result of caliber wear. The corrections required from this can easily be corrected by changing the position of the laying tube position sector in the circulation or increasing the sector width B.
Claims (4)
- A wire rolling mill with a multiplicity of shaping mills (1), cropping shears (2), a finishing block (4), a coil laying head (6) with a guide tube (7) and with a drive comprising a coil laying head motor (8), a coil laying head transmission (9), a discharge conveyor (10) for the finished rolled wire (D) laid up as coils, which parts of the unit are disposed one behind the other in the direction of travel of the wire, and with a control device (12) with a computer (13) which controls the cropping shears (2) according to a predetermined rolling program by means of a cutting command, wherein the coil laying head (6) has an angular rotation position transmitter (14), the angular positions of which correspond to the guide tube positions, and which is connected to the control device (12) which processes signals from the angular rotation position transmitter (14) by means of the rolling program to give a cutting position command for the cropping shears (2), characterised in that the coil laying head (6) has an angular rotation position transmitter (14) which operates by means of pulses and which emits 360 equidistant pulses and a defined zero pulse per revolution, that a counter (18) is disposed between the angular rotation position transmitter (14) and an electronic AND operation circuit (15) of the control device (12), and that the counter (18) is equipped with a preselector device with which the programmable guide tube position sector (S) and the sector ranges (B) can be set.
- A wire rolling mill according to Claim 1, characterised in that the drive (8, 9) of the coil laying head (6) has the angular rotation position transmitter (14).
- A wire rolling mill according to Claim 2, characterised in that the angular rotation position transmitter (14) is placed in series with an adapter transmission (16) on a shaft (17) of the drive (8, 9), and that the adapter transmission (16) reproduces the positions of the angular rotation position transmitter (14) and of the guide tube (7), including a zero position.
- A wire rolling mill according to Claim 1, characterised in that each revolution of the angular rotation position transmitter (14) can be divided into a predetermined number of guide tube position sectors (S) by the preselector device, and that the adjustment of the sector width (B) of these guide tube position sectors (S) can be altered at the preselector device with increasing wire thickness.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88112610T ATE82882T1 (en) | 1987-09-12 | 1988-08-03 | WIRE ROLLING MILL. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3730745A DE3730745C1 (en) | 1970-08-04 | 1987-09-12 | Rod rolling mill |
DE3730745 | 1987-09-12 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0307603A2 EP0307603A2 (en) | 1989-03-22 |
EP0307603A3 EP0307603A3 (en) | 1990-06-13 |
EP0307603B1 true EP0307603B1 (en) | 1992-12-02 |
Family
ID=6335917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88112610A Expired - Lifetime EP0307603B1 (en) | 1987-09-12 | 1988-08-03 | Wire-rolling mill |
Country Status (6)
Country | Link |
---|---|
US (1) | US4891963A (en) |
EP (1) | EP0307603B1 (en) |
JP (1) | JPH067961B2 (en) |
AT (1) | ATE82882T1 (en) |
ES (1) | ES2036632T3 (en) |
GR (1) | GR3006864T3 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT392747B (en) * | 1989-02-23 | 1991-05-27 | Boehler Gmbh | METHOD AND ARRANGEMENT FOR ROLLING WIRE OR ROD MATERIAL |
DE102005062860A1 (en) * | 2005-12-29 | 2007-07-12 | Robert Bosch Gmbh | Method and device for producing bent spring elements |
DE102007032987A1 (en) * | 2007-07-16 | 2009-01-22 | Sms Meer Gmbh | Method for producing wire and wire rolling mill |
CN102728612B (en) * | 2012-05-30 | 2015-07-22 | 上海新华锦焊接材料科技有限公司 | Automatic tin wire rolling mill |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1290462A (en) * | 1970-08-04 | 1972-09-27 | ||
JPS5216705A (en) * | 1975-07-30 | 1977-02-08 | Hitachi Zosen Corp | Method of connecting present railway with elevated railway |
DE2720136A1 (en) * | 1977-05-05 | 1978-11-09 | Demag Ag | FURNISHING, DIVIDING, AND CRUSHING DEVICE OF FAST-RUNING ROLLED GOODS |
JPS5477260A (en) * | 1977-12-01 | 1979-06-20 | Toshiba Corp | Laying head positioning control unit |
SU801991A1 (en) * | 1978-12-01 | 1981-02-07 | Донецкий Ордена Ленина Металлургическийзавод Им. B.И.Ленина | Apparatus for cutting out bar stacks |
FR2459085A1 (en) * | 1979-06-14 | 1981-01-09 | Usinor | Drawn wire coil fabricating machine - has shears for incoming wire synchronised with position of coil forming head |
US4389868A (en) * | 1980-03-31 | 1983-06-28 | The Gillette Company | Apparatus for shearing and coiling strip material |
JPS5714406A (en) * | 1980-06-30 | 1982-01-25 | Toshiba Corp | Control method for discharge position of wire rod in rolling installation |
JPS57154320A (en) * | 1981-03-18 | 1982-09-24 | Toshiba Corp | Control device for discharging coil to prescribed position in wire rod rolling equipment |
JPS5884613A (en) * | 1981-11-13 | 1983-05-20 | Nippon Steel Corp | Device for controlling angle of laying head |
AT372881B (en) * | 1982-03-05 | 1983-11-25 | Voest Alpine Ag | PLANT FOR THE HOT ROLLING OF TAPE OR TABLED ROLLED GOODS |
DE3628151A1 (en) * | 1986-08-19 | 1988-02-25 | Siemens Ag | Positioning arrangement for the rolling stock fed to a loop layer of a rod mill train |
-
1988
- 1988-08-03 AT AT88112610T patent/ATE82882T1/en active
- 1988-08-03 EP EP88112610A patent/EP0307603B1/en not_active Expired - Lifetime
- 1988-08-03 ES ES198888112610T patent/ES2036632T3/en not_active Expired - Lifetime
- 1988-08-26 JP JP63210875A patent/JPH067961B2/en not_active Expired - Lifetime
- 1988-08-31 US US07/239,213 patent/US4891963A/en not_active Expired - Fee Related
-
1993
- 1993-01-21 GR GR930400118T patent/GR3006864T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
JPS6471501A (en) | 1989-03-16 |
GR3006864T3 (en) | 1993-06-30 |
US4891963A (en) | 1990-01-09 |
EP0307603A3 (en) | 1990-06-13 |
JPH067961B2 (en) | 1994-02-02 |
EP0307603A2 (en) | 1989-03-22 |
ATE82882T1 (en) | 1992-12-15 |
ES2036632T3 (en) | 1993-06-01 |
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