EP0255507B1 - Device for straightening and feeding hot-rolled wires with a natural hardness to a user - Google Patents
Device for straightening and feeding hot-rolled wires with a natural hardness to a user Download PDFInfo
- Publication number
- EP0255507B1 EP0255507B1 EP87890150A EP87890150A EP0255507B1 EP 0255507 B1 EP0255507 B1 EP 0255507B1 EP 87890150 A EP87890150 A EP 87890150A EP 87890150 A EP87890150 A EP 87890150A EP 0255507 B1 EP0255507 B1 EP 0255507B1
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- European Patent Office
- Prior art keywords
- loop
- rotor
- wire
- straightening
- consumer
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F23/00—Feeding wire in wire-working machines or apparatus
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- 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
- B21D43/022—Loop-control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/02—Straightening
Definitions
- the invention relates to a device for feeding naturally hard, hot-rolled wires drawn from supply reels to a consumer, e.g. to a multi-point resistance welding machine, and for straightening the wires on their way from the supply reels to the consumer according to the preamble of claim 1.
- any hot rolled unalloyed or low alloy steel has a pronounced yield point, i.e. a load or stress limit, beyond which the steel expands very much without an additional increase in the load or tension, the stress permitted for the direct use of such steel must be set below the yield point in order to deform the components by reaching the yield point avoid. Cold working not only removes the flow properties of the steel, it also improves its breaking strength.
- Relatively low alloyed, easily weldable steels can thus be considerably improved in their strength properties.
- steels pretreated in this way have a smooth, clean surface, which, for example, favors the welding of intersecting wires to welded grids.
- Such a method of manufacturing gratings, in which all work processes were carried out in succession in one train, is known, for example, from AT-B 214.241.
- the invention is concerned with the task of designing a device for feeding naturally hard hot-rolled wires to a consumer in such a way that wire breaks are avoided when the wire feed to the straightening device is suddenly interrupted are, or that a proper transfer of the wire emerging from the straightening device at a uniform speed to a discontinuously operating consumer is ensured.
- This object is achieved according to the invention with a device of the type specified in the introduction by that between the wire loop influencing the conveying speed and the supply reel in front of the take-off device, a known per se, the wire between two wire guides lying on the wire pull axis by means of a rotating rotor rotating at high speed, a radial straightening device and between the rotor straightening device and the chopper as an automatic shutdown device its length variable loop is provided, with this second loop being assigned a scanning device which is capable of switching off at least the take-off device and the rotor straightening device when falling below a predetermined minimum length of the second loop, while the switches associated with the first loop are in addition to the conveying speed of the take-off device and in the same direction they are also capable of influencing the speed of the rotor straightening device.
- Each wire 1 running from a freely rotatable supply reel 4 is driven by a pair of motorized take-off rollers 2 which grips it with a clamp connection conveyed through a rotor straightening device 3.
- the straightening device 3 has two wire guides 3a on the wire drawing axis and between them a straightening rotor 3b which deflects the wire several times from the wire drawing axis and rotates with a high number of wires.
- the wire is deflected from the straight feed direction by a spring-loaded roller 5, which is arranged between two fixed rollers 6 and 7 and is mounted on an arm of a two-armed lever 8 which is rotatably mounted at 11, so that it normally forms a loop-like bulge 12 of a predetermined size.
- the spring 9 loading the roller 5 must be sufficiently strong to be able to absorb the force required in the normal operation for rotating the reel 4 in the wire 1 without any appreciable reduction in the wire slack between the rollers 6 and 7.
- a further loop 16 is arranged between each rotor straightening device 3 and the consumer 15, which is only indicated schematically, for example a grid welding machine, which is followed by a simple roller straightening device 17, which only has the task of eliminating permanent deformations resulting from the loop 16, for example.
- the size of the loop 16 is limited by two switches 18, 19.
- the switches 18, 19 act on the rotor straightening device 3 in such a way that the drive of the straightening rotor 3b and the drive of the puller roller pair 2 is switched to a higher speed when the switch 18 is actuated, but to a lower speed when the switch 19 is actuated.
- the switch 18 can also be designed such that if the straightening rotor 3b does not respond to the actuation of the switch, for example because the straightening rotor 3b has been switched off and braked by actuation of the contact 10, the consumer 15 is switched off in a second switch position. On the other hand, the consumer 15 could also be switched off directly from the switch contact 10.
- a descaling device 20 for example a motor-driven brush set, can be connected upstream of the rotor straightening device 3.
- each rotor straightening device twists the wire to a certain extent during the straightening process, as a result of which internal stresses are built up in the wire during the straightening process, it may prove expedient to supply a large number of wires to the consumer, at least a number of rotor straightening devices to drive the other direction of rotation in the opposite direction of rotation in order to compensate for the torsional stresses of adjacent wires in a final product, such as a welded grid.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wire Processing (AREA)
- Ropes Or Cables (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Sewing Machines And Sewing (AREA)
- Metal Rolling (AREA)
Abstract
Description
Die Erfindung betrifft eine Einrichtung zum Zuführen naturharter, warmgewalzter, von Vorratshaspeln abgezogener Drähte zu einem Verbraucher, z.B. zu einer Vielpunkt-Widerstandschweißmaschine, und zum Richten der Drähte auf ihrem Weg von den Vorratshaspeln zum Verbraucher gemäß Oberbegriff des Patentanspruchs 1.The invention relates to a device for feeding naturally hard, hot-rolled wires drawn from supply reels to a consumer, e.g. to a multi-point resistance welding machine, and for straightening the wires on their way from the supply reels to the consumer according to the preamble of claim 1.
Bisher werden in der drahtverarbeitenden Industrie, insbesondere dort, wo hohe Drahtfestigkeitswerte gefordert werden, wie beispielsweise beim Herstellen von Bewehrungsmatten für den Stahlbetonbau, die in einem Warmwalzverfahren hergestellten Drähte einer nachfolgenden Kaltverformung, etwa einem Recken, Kaltziehen oder Kaltwalzen, unterzogen, durch welche ihre Festigkeit beträchtlich erhöht werden kann. Da jeder warmgewalzte unlegierte oder niedrig legierte Stahl eine ausgeprägte Fließgrenze aufweist, d.h. eine Belastungs- bzw. Spannungsgrenze, bei deren Überschreitung der Stahl sich ohne zusätzliche Steigerung der Last bzw. Spannung sehr stark dehnt, muß die für die unmittelbare Verwendung solchen Stahles zulässige Spannung unterhalb der Fließgrenze festgelegt werden, um Verformungen der Bauteile durch Erreichen der Fließgrenze zu vermeiden. Durch die Kaltverformung werden nicht nur die Fließeigenschaften des Stahles beseitigt, sondern es wird darüber hinaus auch noch seine Bruchfestigkeit verbessert. Es können somit relativ niedrig legierte, leicht schweißbare Stähle in ihren Festigkeitseigenschaften erheblich verbessert werden. Zudem haben so vorbehandelte Stähle eine glatte, saubere Oberfläche, die beispielsweise das Verschweißen einander kreuzender Drähte zu geschweißten Gittern begünstigt.So far, in the wire processing industry, particularly where high wire strength values are required, such as in the manufacture of reinforcement mats for reinforced concrete construction, the wires produced in a hot rolling process are subjected to a subsequent cold deformation, such as stretching, cold drawing or cold rolling, which increases their strength can be increased considerably. Since any hot rolled unalloyed or low alloy steel has a pronounced yield point, i.e. a load or stress limit, beyond which the steel expands very much without an additional increase in the load or tension, the stress permitted for the direct use of such steel must be set below the yield point in order to deform the components by reaching the yield point avoid. Cold working not only removes the flow properties of the steel, it also improves its breaking strength. Relatively low alloyed, easily weldable steels can thus be considerably improved in their strength properties. In addition, steels pretreated in this way have a smooth, clean surface, which, for example, favors the welding of intersecting wires to welded grids.
Ein solches Herstellungsverfahren von Gittern, bei welchen sämtliche Arbeitsvorgänge hintereinander in einem Zug durchgeführt wurden, ist beispielsweise aus der AT-B 214.241 bekannt.Such a method of manufacturing gratings, in which all work processes were carried out in succession in one train, is known, for example, from AT-B 214.241.
Fortschritte bei der Stahlerzeugung und sinkende Preise der Legierungsstoffe ermöglichen es heute, sog. naturharte warmgewalzte Drähte mit Festigkeitseigenschaften, welche denen kaltverformter Drähte entsprechen, zu Preisen herzustellen, die gegenüber denen kaltverformter Drähte durchaus konkurrenzfähig sind. Auch das Schweißen naturharter warmgewalzter, stark legierter Drähte bereitet heute keine Schwierigkeiten mehr, weil zur Erzielung hoher Festigkeiten anstatt des eine Schweißung ungünstig beeinflussenden Kohlenstoffes andere Legierungselemente preiswert zur Verfügung stehen und Anwendung finden.Advances in steelmaking and falling prices of alloy materials make it possible to manufacture so-called naturally hard, hot-rolled wires with strength properties that correspond to those of cold-formed wires at prices that are quite competitive with those of cold-formed wires. Even the welding of naturally hard, hot-rolled, heavily alloyed wires no longer poses any difficulties because, to achieve high strengths, instead of the carbon that adversely affects welding, other alloying elements are available and used inexpensively.
Vergleichsweise erschwert wird jedoch bei der Verwendung naturharter warmgewalzter Drähte der Richtvorgang, zumal bei den kaltverformten Drähten durch den Kaltbearbeitungsvorgang die gröbsten Verformungen bereits geglättet werden. Man kann sich daher zum Richten kaltgezogener Drähte einfacher Rollenrichtgeräte bedienen, die im allgemeinen aus zwei in rechtem Winkel zueinander angeordneten Rollensätzen bestehen, durch welche der Draht in jeweils einer Ebene in mit zur Auslaufseite des Richtrollensatzes hin abnehmender Amplitude schwach gewellt hindurchgeführt wird.However, the straightening process is comparatively difficult when using naturally hard hot-rolled wires, especially since the coarsest deformations are already smoothed out in the cold-formed wires by the cold-machining process. It is therefore possible to use simple roller straighteners for straightening cold-drawn wires, which generally consist of two sets of rollers arranged at right angles to one another, through which the wire is passed in one plane in a slightly undulating manner with the amplitude decreasing towards the outlet side of the straightening roller set.
Wesentlich bessere und daher für naturharte warmgewalzte Stähle besonders günstige Richtergebnisse lassen sich mit einer sog. Rotorrichtvorrichtung erzielen, in welcher der Draht zwischen zwei in der Drahtzugachse liegenden festen Drahtführungen mittels einer um diese Achse mit hoher Drehzahl umlaufenden Drahtführung in einem Richtrotor ausgelenkt wird. Eine Ausführungsform einer solchen Rotorrichtvorrichtung ist in der AT-B 187.401 beschrieben.Much better and therefore particularly favorable for naturally hard hot-rolled steels can be achieved with a so-called rotor straightening device, in which the wire is deflected in a straightening rotor between two fixed wire guides located in the wire pull axis by means of a wire guide rotating around this axis at high speed. An embodiment of such a rotor straightening device is described in AT-B 187.401.
Da solchen Richtvorrichtungen auf Grund der erforderlichen hohen Drehzahl des Richtrotors naturgemäß ein großes Schwungmoment innewohnt, lassen sie sich nicht plötzlich abschalten und neigen daher dazu, den Draht, wenn er nicht gleichmäßig zuläuft, etwa weil sich Umgeher der Vorratshaspeln, von welchen der Draht abgezogen wird, verheddert haben, so weit zu verdrillen, bis er reißt. Überdies muß auf der Auslaufseite der Richtvorrichtung eine Möglichkeit geschaffen werden, den mit gleichförmiger Geschwindigkeit erfolgenden Austritt des Drahtes mit dem meist intermittierenden Vorzug des Drahtes in einen Verbraucher, etwa eine Gitterschweißmaschine, in Einklang zu bringen, wobei zu berücksichtigen ist, daß ein befriedigendes Richten des Drahtes ein bestimmtes Verhältnis der Umlaufgeschwindigkeit des Richtrotors zur Vorschubgeschwindigkeit des Drahtes durch den Richtrotor voraussetzt.Since such straightening devices inherently have a high momentum due to the high speed of the straightening rotor, they cannot be suddenly switched off and therefore tend to the wire if it does not run evenly, for example because bypassers of the supply reels, from which the wire is withdrawn, twisted until it breaks. In addition, a possibility must be created on the outlet side of the straightening device to reconcile the exit of the wire, which occurs at a uniform speed, with the mostly intermittent preference of the wire into a consumer, such as a grid welding machine, whereby it must be taken into account that satisfactory straightening of the Wire presupposes a certain ratio of the revolving speed of the straightening rotor to the feed speed of the wire through the straightening rotor.
Aus der DE-A-31 20 721 ist es bekannt, einen störungsfreien Zulauf eines mit gleichförmiger Geschwindigkeit vorgeschobenen Drahtes zu einem intermittierend arbeitenden Verbraucher mittels einer längenveränderbaren Drahtschlaufe zu ermöglichen, deren größte und kleinste Länge durch zwei Berührungsschalter, welche mit dem Antriebsmechanismus des Drahtes in Wirkverbindung stehen, begrenzt wird. Je nachdem, ob die Drahtschlaufe den ihre geringste oder den ihre größte Länge begrenzenden Schalter betätigt, wird die Vorschubgeschwindigkeit des Drahtes erhöht oder erniedrigt. Ferner sind z.B. aus der DE-B-1 036 198 und EP-A-0 036 410 auch Einrichtungen bekannt, die einen drahtverarbeitenden Verbraucher abstellen, sobald dessen Versorgung mit Draht aus irgend einem Grund gestört oder unterbrochen wird. Andere, z.B. aus der GB-A-719 051 oder der US-A-1 503 583 bekannte Vorrichtungen lösen, wenn die Drahtspannung zwischen Ablaufvorrichtung und dem Verbraucher ein vorgegebenes Maß überschreitet, das Abschneiden des Drahtes aus. Dieser Effekt ist in seinen Wirkungen einem Drahtbruch gleichzusetzen.From DE-A-31 20 721 it is known to enable trouble-free feed of a wire fed at a uniform speed to an intermittently working consumer by means of a length-adjustable wire loop, the greatest and smallest length of which by means of two touch switches which are connected to the drive mechanism of the wire Active connection, is limited. The feed speed of the wire is increased or decreased depending on whether the wire loop actuates the switch that limits its length or the length that limits it. Furthermore, e.g. from DE-B-1 036 198 and EP-A-0 036 410 also devices are known which switch off a wire-processing consumer as soon as his supply of wire is disturbed or interrupted for any reason. Others, e.g. Devices known from GB-A-719 051 or US-A-1 503 583, when the wire tension between the drain device and the consumer exceeds a predetermined level, cut the wire. This effect is equivalent to a broken wire.
Ausgehend von diesem Stand der Technik befaßt sich die Erfindung mit der Aufgabe, eine Einrichtung zum Zuführen naturharter warmgewalzter Drähte zu einem Verbraucher derart auszubilden, daß bei plötzlicher Unterbrechung der Drahtzufuhr zur Richtvorrichtung Drahtbrüche vermieden werden, bzw. daß eine einwandfreie Übergabe des aus der Richtvorrichtung mit gleichförmiger Geschwindigkeit austretenden Drahtes an einen diskontinuierlich arbeitenden Verbraucher sichergestellt ist.Starting from this prior art, the invention is concerned with the task of designing a device for feeding naturally hard hot-rolled wires to a consumer in such a way that wire breaks are avoided when the wire feed to the straightening device is suddenly interrupted are, or that a proper transfer of the wire emerging from the straightening device at a uniform speed to a discontinuously operating consumer is ensured.
Diese Aufgabe wird mit einer Einrichtung der einleitend angegebenen Gattung erfindungsgemäß dadurch gelöst, daß zwischen der die Fördergeschwindigkeit beeinflussenden Drahtschlaufe und der Vorratshaspel vor der Abzugeinrichtung eine an sich bekannte, den Draht zwischen zwei auf der Drahtzugachse liegenden Drahtführungen mittels eines mit hoher Drehzahl umlaufenden Richtrotors radial auslenkende Rotorrichtvorrichtung und zwischen der Rotorrichtvorrichtung und der Hapsel als automatische Abschalteinrichtung eine zweite in ihrer Länge veränderbare Schlaufe vorgesehen ist, wobei dieser zweiten Schlaufe eine Abtasteinrichtung zugeordnet ist, welche bei Unterschreiten einer vorgegebenen Mindestlänge der zweiten Schlaufe zumindest die Abzugeinrichtung und die Rotorrichtvorrichtung abzuschalten befähigt ist, während die der ersten Schlaufe zugeordneten Schalter zusätzlich zur Fördergeschwindigkeit der Abzugeinrichtung und gleichsinnig mit dieser auch die Drehzahl der Rotorrichtvorrichtung zu beeinflussen befähigt sind.This object is achieved according to the invention with a device of the type specified in the introduction by that between the wire loop influencing the conveying speed and the supply reel in front of the take-off device, a known per se, the wire between two wire guides lying on the wire pull axis by means of a rotating rotor rotating at high speed, a radial straightening device and between the rotor straightening device and the chopper as an automatic shutdown device its length variable loop is provided, with this second loop being assigned a scanning device which is capable of switching off at least the take-off device and the rotor straightening device when falling below a predetermined minimum length of the second loop, while the switches associated with the first loop are in addition to the conveying speed of the take-off device and in the same direction they are also capable of influencing the speed of the rotor straightening device.
Anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispieles, das den Weg eines Drahtes von der Vorratshaspel zum Verbraucher erkennen läßt, soll die Erfindung nun näher beschrieben werden.The invention will now be described in more detail with reference to an exemplary embodiment shown schematically in the drawing, which shows the path of a wire from the supply reel to the consumer.
Jeder von einer frei drehbar gelagerten Vorratshaspel 4 ablaufende Draht 1 wird von einem ihn mit Klemmschluß erfassenden, motorisch angetriebenen Abzugrollenpaar 2 durch eine Rotorrichtvorrichtung 3 hindurchgefördert. Die Richtvorrichtung 3 weist auf der Drahtzugachse zwei Drahtführungen 3a und zwischen diesen einen den Draht mehrfach aus der Drahtzugachse auslenkenden, mit hoher Drahzahl rotierenden Richtrotor 3b auf.Each wire 1 running from a freely rotatable supply reel 4 is driven by a pair of motorized take-
Zwischen der Rotorrichtvorrichtung 3 und der Haspel 4 wird der Draht von einer federbelasteten Rolle 5, die zwischen zwei feststehenden Rollen 6 und 7 angeordnet und an einem Arm eines zweiarmigen, bei 11 drehbar gelagerten Hebels 8 gelagert ist, aus der geraden Zuführrichtung ausgelenkt, so daß er normalerweise eine schlaufenartige Ausbuchtung 12 vorbestimmter Größe bildet. Die die Rolle 5 belastende Feder 9 muß hinlänglich stark sein, um die im normalen Betrieb zum Drehen der Haspel 4 erforderliche Kraft im Draht 1 ohne nennenswerte Verringerung des Drahtdurchhanges zwischen den Rollen 6 und 7 aufnehmen zu können.Between the rotor straightening
Erst im Störungsfalle, wenn die Drehung der Vorratshaspel 4 behindert wird, etwa dadurch, daß sich zwei Umgeher des auf der Haspel aufgewickelten Drahtes ineinander verhängen, wird der Draht zwischen den Rollen 6 und 7 allmählich gespannt. Dabei stößt der freie Arm des zweiarmigen Hebels 8 gegen einen Schaltkontakt 10, durch welchen zumindest der Antrieb der Rotorrichtvorrichtung 3 und des zugeordneten Abzugrollenpaares 2 abgeschaltet und gleichzeitig ein Abbremsen des Richtrotors 3b eingeleitet wird. Da der Draht 1 bei Beginn des Bremsvorganges noch erheblich von der Tangentiallinie der beiden Rollen 6 und 7 abweicht, kann er während des Auslaufens des Richtrotors 3b unter allmählicher Streckung zwischen den Rollen 6 und 7 noch ein Stück weiter gefördert werden, wodurch eine lokale, zum Bruch führende Überbeanspruchung des Drahtes durch den Richtrotor 3b vermieden wird.Only in the event of a fault, when the rotation of the supply reel 4 is hindered, for example by the fact that two bypassers of the wire wound on the reel interlock, is the wire between the
Zwischen jeder Rotorrichtvorrichtung 3 und dem nur schematisch angedeuteten Verbraucher 15, etwa einer Gitterschweißmaschine, ist eine weitere Schlaufe 16 angeordnet, der eine einfache Rollenrichtvorrichtung 17 nachgeschaltet ist, welche lediglich die Aufgabe hat, etwa aus der Schlaufe 16 resultierende, bleibende Verformungen zu beseitigen.A
Die Größe der Schlaufe 16 wird durch zwei Schalter 18, 19 begrenzt. Die Schalter 18, 19 wirken auf die Rotorrichtvorrichtung 3 derart ein, daß der Antrieb des Richtrotors 3b und der Antrieb des Abzugrollenpaares 2 bei Betätigung des Schalters 18 auf eine höhere, bei Betätigung des Schalters 19 hingegen auf eine niedrigere Geschwindigkeitsstufe geschaltet wird.The size of the
Der Schalter 18 kann auch so ausgebildet sein, daß er, wenn der Richtrotor 3b auf die Schalterbetätigung nicht anspricht, etwa weil der Richtrotor 3b durch Betätigung des Kontaktes 10 abgeschaltet und abgebremst worden ist, in einer zweiten Schalterstellung ein Abschalten des Verbrauchers 15 bewirkt. Anderseits könnte das Abschalten des Verbrauchers 15 auch unmittelbar vom Schaltkontakt 10 aus erfolgen.The
Da die warmgewalzten Drähte verzundert sind, kann, um diese besser verarbeiten zu können, der Rotorrichtvorrichtung 3 noch eine Entzunderungseinrichtung 20, etwa ein motorisch angetriebener Bürstensatz, vorgeschaltet sein.Since the hot-rolled wires are scaled, in order to be able to process them better, a
Da schließlich jede Rotorrichtvorrichtung den Draht beim Richtvorgang bis zu einem gewissen Grad in sich verdrillt, wodurch im Draht beim Richtvorgang innere Spannungen aufgebaut werden, kann es sich bei der Zufuhr einer Vielzahl von Drähten zum Verbraucher als zweckmäßig erweisen, zumindest eine Anzahl von Rotorrichtvorrichtungen in gegenüber den anderen Rotorrichtvorrichtungen entgegengesetztem Drehungssinn anzutreiben, um in einem Endprodukt, etwa einem geschweißten Gitter, eine Kompensation der Torsionsspannungen benachbarter Drähte zu erzielen.Finally, since each rotor straightening device twists the wire to a certain extent during the straightening process, as a result of which internal stresses are built up in the wire during the straightening process, it may prove expedient to supply a large number of wires to the consumer, at least a number of rotor straightening devices to drive the other direction of rotation in the opposite direction of rotation in order to compensate for the torsional stresses of adjacent wires in a final product, such as a welded grid.
Claims (5)
- Apparatus for feeding self-hardening hot-rolled wires (1), drawn off from supply reels (4) to a consumer, for example to a multiple-spot resistance-welding machine, and for straightening the wires on their way from the supply reel to the consumer, using a wire loop (16) of variable length arranged between each supply reel and the consumer, and two switches (18, 19) interacting with this wire loop and capable, when a maximum or a minimum loop length is reached, of influencing the conveying speed of a draw-off device (2) in order to correct the loop length, as well as using an automatic switch-off device, characterized in that, between the wire loop (16) influencing the conveying speed and the supply reel (4), there is, in front of the draw-off device (2), a rotor-type straightening device (3) known per se, deflecting the wire (1) radially between two wire guides (3a) lying in the wire drawing axis, by means of a straightening rotor (3b) rotating at high speed, and between the rotor-type straightening device (3) and the reel (4) there is a second loop (12) of variable length as an automatic switch-off device there being assigned to this second loop (12) a sensing means (5, 8, 10) which is capable of switching off at least the draw-off device (2) and the rotor-type straightening device (3) when the length of the second loop (12) falls below a predetermined minimum value, whilst the switches (18, 19) assigned to the first loop (16) are capable of influencing not only the conveying speed of the draw-off device (2), but also the speed of the rotor-type straightening device (3) in the same direction.
- Apparatus according to Claim 1, characterized in that at least some of the rotor-type straightening devices (3) can be driven in the opposite direction of rotation to the other rotor-type straightening devices (3).
- Apparatus according to Claim 1 or 2, characterized in that the sensing means (5, 8, 10) assigned to each front loop (12) is additionally capable of also switching off the consumer (15).
- Apparatus according to one of Claims 1 to 3, characterized in that the switch (18) responding to the minimum length of the rear loop (16) is also capable of switching off the consumer (15) in the event of the failure of the draw-off device (2) and rotor-type straightening device (3) to respond to a control command triggering an increase in size of the loop (16).
- Apparatus according to one of Claims 1 to 4, characterized in that, as known per se, a descaling device (20) is arranged in front of each rotor-type straightening device (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT2027/86 | 1986-07-28 | ||
| AT0202786A AT386364B (en) | 1986-07-28 | 1986-07-28 | DEVICE FOR STRAIGHTING AND FEEDING A NATURAL HARDENER, HOT-ROLLED WIRE TO A CONSUMER |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0255507A2 EP0255507A2 (en) | 1988-02-03 |
| EP0255507A3 EP0255507A3 (en) | 1990-03-14 |
| EP0255507B1 true EP0255507B1 (en) | 1992-10-07 |
Family
ID=3526227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87890150A Expired - Lifetime EP0255507B1 (en) | 1986-07-28 | 1987-07-02 | Device for straightening and feeding hot-rolled wires with a natural hardness to a user |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4774824A (en) |
| EP (1) | EP0255507B1 (en) |
| AT (2) | AT386364B (en) |
| AU (1) | AU592884B2 (en) |
| DE (1) | DE3782110D1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010047531A1 (en) | 2010-10-05 | 2012-04-05 | Wafios Ag | Device for feeding wire to wire processing machines |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5526665A (en) * | 1992-10-09 | 1996-06-18 | United States Surgical Corporation | Apparatus for straightening coiled wire |
| DE59502367D1 (en) * | 1994-12-07 | 1998-07-02 | Wafios Maschinen Wagner | METHOD AND DEVICE FOR THE OPTIMIZED PRODUCTION OF SCREW SPRINGS ON AUTOMATIC SPRING WINCHES |
| DE4443503A1 (en) * | 1994-12-07 | 1996-06-13 | Uwe Dr Ing Otzen | Mfr. of helical springs by automatic spring winding machine |
| IT1281466B1 (en) * | 1995-12-22 | 1998-02-18 | Impianti Industriali Spa | PROCEDURE FOR THE PRODUCTION OF ELECTRO-WELDED MESH AND RELATED DEVICE |
| DE19723635C2 (en) * | 1997-06-05 | 1999-03-25 | Witels App Masch Albert Gmbh | Unwinder for wire or multi-wire goods |
| DE59906102D1 (en) | 1998-04-14 | 2003-07-31 | Siemens Ag | METHOD AND DEVICE FOR UNWINDING A LONG-STRETCHED GOOD |
| US7398903B2 (en) * | 2003-09-10 | 2008-07-15 | Komax Holding Ag | Wire-feeding device for a wire-processing machine |
| US20070095006A1 (en) * | 2005-11-01 | 2007-05-03 | Konersmann Ronald D | Lightweight portable concrete enclosure and associated method of construction |
| CN101085502B (en) * | 2007-07-11 | 2010-07-07 | 林世东 | Continuous processing device for automobile aluminum alloy heat exchanger radiator pipe material |
| US20100229614A1 (en) * | 2009-03-15 | 2010-09-16 | Tyl Thomas W | Method to straighten metallic filament |
| CN107186126A (en) * | 2016-03-14 | 2017-09-22 | 新昌县大市聚镇海房机械厂 | A kind of raw silk rings machine operation fracture of wire limits prevention module |
| CN106694697B (en) * | 2016-12-15 | 2018-10-23 | 鹤山市运通新能源科技有限公司 | A kind of C-shaped channel steel plate speed-limiting device |
| JP2024006140A (en) * | 2022-07-01 | 2024-01-17 | マックス株式会社 | Binding device |
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| DE1074537B (en) * | 1960-02-04 | Meyer, Roth & Pastor, Köln-Raderberg | Wire cutter | |
| US998448A (en) * | 1909-07-29 | 1911-07-18 | John Snelgrow Bachman | Straightening-machine. |
| US1503583A (en) * | 1922-06-14 | 1924-08-05 | Alec J Gerrard | Wire straightening and swaging machine |
| US2343899A (en) * | 1941-11-04 | 1944-03-14 | Bliss E W Co | Strip feeding mechanism |
| GB719051A (en) * | 1950-04-18 | 1954-11-24 | Morrall Ltd Abel | Improvements in grippers for wire and like feed mechanisms |
| DE1036198B (en) * | 1953-12-22 | 1958-08-14 | Krafft & Schuell | Device for switching off the feed on wire processing machines |
| AT187401B (en) * | 1954-11-16 | 1956-10-25 | Evg Entwicklung Verwert Ges | Device for straightening wires |
| AT214241B (en) * | 1958-05-09 | 1961-03-27 | Evg Entwicklung Verwert Ges | Process and plant for the production of welded wire mesh |
| DE1179176B (en) * | 1958-07-15 | 1964-10-08 | Amp Inc | Driving roller arrangement for the intermittent feeding of metallic, continuously moving extruded material, e.g. B. wire, in a further processing device |
| DE1602633A1 (en) * | 1967-12-01 | 1970-05-06 | Jakob Malsy Spiralfedernfabrik | Wire straightening machine with rotating straightening blade |
| US3811304A (en) * | 1972-09-20 | 1974-05-21 | Gen Electric | Looper controlled rolling mill |
| US3893316A (en) * | 1974-11-07 | 1975-07-08 | A J Gerrard And Company | Bale tie straightening apparatus |
| SU677796A1 (en) * | 1975-02-11 | 1979-08-05 | Конструкторское Бюро Мособлисполкома | Automatic machine for making articles from coiled materials |
| DE2602269A1 (en) * | 1976-01-22 | 1977-07-28 | Kieserling & Albrecht | Wire bending device with fixed bearing - has bending tool held by piston with energy storage spring |
| DE3005530C2 (en) * | 1980-02-14 | 1984-03-15 | Klaus Dipl.-Ing. 8000 München Keller | Wire delivery and straightening device for wire processing machines |
| AT366302B (en) * | 1980-03-17 | 1982-04-13 | Evg Entwicklung Verwert Ges | PLANT FOR PROCESSING, HOW TO LAND, MAINTAIN AND / OR DRAW, AND FOLLOWING STRAIGHTING OF WIRE |
| DE3120721A1 (en) * | 1981-05-25 | 1982-12-16 | Wolfram Ing. Reinking (grad.), 4993 Rahden | Wire withdrawal method |
| US4464916A (en) * | 1982-05-28 | 1984-08-14 | The Minster Machine Company | Loop follower straightener control in a press installation |
| JPS60234734A (en) * | 1984-05-08 | 1985-11-21 | Toshiba Corp | Feeding device of ropy body |
-
1986
- 1986-07-28 AT AT0202786A patent/AT386364B/en not_active IP Right Cessation
-
1987
- 1987-07-02 DE DE8787890150T patent/DE3782110D1/en not_active Expired - Lifetime
- 1987-07-02 AT AT87890150T patent/ATE81313T1/en not_active IP Right Cessation
- 1987-07-02 EP EP87890150A patent/EP0255507B1/en not_active Expired - Lifetime
- 1987-07-10 US US07/071,888 patent/US4774824A/en not_active Expired - Fee Related
- 1987-07-27 AU AU76137/87A patent/AU592884B2/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010047531A1 (en) | 2010-10-05 | 2012-04-05 | Wafios Ag | Device for feeding wire to wire processing machines |
| WO2012045381A1 (en) | 2010-10-05 | 2012-04-12 | Wafios Aktiengesellschaft | Apparatus for feeding wire to wire processing machines |
| DE102010047531B4 (en) * | 2010-10-05 | 2012-07-05 | Wafios Ag | Device for feeding wire to wire processing machines |
| US9586249B2 (en) | 2010-10-05 | 2017-03-07 | Wafios Aktiengesellschaft | Apparatus for feeding wire to wire processing machines |
Also Published As
| Publication number | Publication date |
|---|---|
| AU7613787A (en) | 1988-02-04 |
| EP0255507A3 (en) | 1990-03-14 |
| AT386364B (en) | 1988-08-10 |
| AU592884B2 (en) | 1990-01-25 |
| EP0255507A2 (en) | 1988-02-03 |
| ATA202786A (en) | 1988-01-15 |
| ATE81313T1 (en) | 1992-10-15 |
| DE3782110D1 (en) | 1992-11-12 |
| US4774824A (en) | 1988-10-04 |
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