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EP1350581B1 - Device for the forming of wire, in particular a spring winding and bending machine - Google Patents

Device for the forming of wire, in particular a spring winding and bending machine Download PDF

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Publication number
EP1350581B1
EP1350581B1 EP20030007613 EP03007613A EP1350581B1 EP 1350581 B1 EP1350581 B1 EP 1350581B1 EP 20030007613 EP20030007613 EP 20030007613 EP 03007613 A EP03007613 A EP 03007613A EP 1350581 B1 EP1350581 B1 EP 1350581B1
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EP
European Patent Office
Prior art keywords
wire
axis
accordance
support arm
grip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20030007613
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German (de)
French (fr)
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EP1350581A3 (en
EP1350581A2 (en
Inventor
Gabriella Kunz
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OFFICINA MECCANICA DOMASO SpA
Original Assignee
OFFICINA MECCANICA DOMASO SpA
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Publication of EP1350581A2 publication Critical patent/EP1350581A2/en
Publication of EP1350581A3 publication Critical patent/EP1350581A3/en
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Publication of EP1350581B1 publication Critical patent/EP1350581B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21FWORKING OR PROCESSING OF METAL WIRE
    • B21F3/00Coiling wire into particular forms
    • B21F3/02Coiling wire into particular forms helically

Definitions

  • the invention relates to a device for forming wire, in particular spring-winding and bending machine, with a wire guide whose junction is preceded by a wire feed device and whose so-called.
  • Wire axis defining muzzle into the wire movement path movable wire processing tools, in particular bending and cutting tools are assigned, and with a gripping device comprising transfer means, by means of which a shaped wire section separated from the remaining wire can be led out of the wire forming area.
  • Wire forming takes place by winding and / or bending, in particular for producing torsion springs, tension springs, tension springs with stems which are bent on both sides and bent parts with, for example, curved sections with arbitrary radii of curvature, the device or machine usually having a inlet side arranged continuously or optionally intermittently working wire feed device is provided with a wire guide and a plurality of arranged on the outlet side of the wire guide controlled tools, which are movable in selectable order transversely and optionally longitudinally to the emerging from the wire guide wire.
  • the one out of the wire guide Emerging wire defines the so-called.
  • Wire axis in relation to all wire processing tools, namely bending and cutting tools are set.
  • the transfer device is mounted on a front of the Drahtverformungs Scheme arranged table in the direction parallel to the wire axis and herverschiebbar.
  • This arrangement hinders free access to the wire deformation area. The handling and control is made considerably more difficult. It is also disadvantageous that thereby the overall length of the machine is increased by the length of the transfer device. It should be noted that between the outlet side or the mouth of the wire guide and the transfer device still a so-called. Falling space must be provided for severed wire blanks in which usually a transport box for collecting the processed wire blanks is positioned. In the described arrangement of the transfer device, this box or the mentioned case space is accessible only from the side. However, this access is usually hindered by laterally arranged tool tables. After all, the arrangement of the aforementioned transfer device before the Drahtverformungs Scheme is extremely disadvantageous.
  • the present invention is therefore an object of the invention to provide a device of the type mentioned above, which is characterized by a smaller overall length and good access to the Drahtverformungs Symposium.
  • the wire moved out of the mouth of the wire guide wire from the front of a wire bending roll should be deliverable vertically and / or horizontally displaceable and is mounted pivotably about an axis parallel to the wire axis.
  • the wire bending roller is designed as a groove, the cross section is approximately semicircular.
  • the diameter of the roller groove corresponds approximately to the diameter of the wire to be deformed.
  • the wire bending roller has the advantage that it rotates when bending the incident wire, with the result that the wear of the wire deformation surface is reduced.
  • the wire does not always strike the same place or point of the wire forming tool for deformation. This allows significantly more springs with one and the same tool, ie produce without tool change than with the conventional static wire forming tools in which a tool change is also required to change the slope.
  • the mentioned movability of the wire bending roller in the vertical and / or horizontal direction allows in a simple way the adjustment of the spring diameter.
  • the spring diameter depends on the point of impact of the wire on the circumference of the wire bending roller. After all, the mentioned wire bending roller and its storage is an extremely advantageous, namely universal wire forming tool.
  • the positioning of the wire bending roller can be done manually or by electric motor. In the latter case is the wire bending roller assigned at least one drive, namely a drive for pivoting the same about an axis parallel to the wire axis.
  • the vertical and horizontal displacement is effected by corresponding movement of the support arm of the transfer device. The same applies to the displacement parallel to the wire axis. This is also done via a corresponding positioning of the transfer device or of the transfer device associated Kragbalkens according to claim 3.
  • the transfer device comprises a parallel to the wire axis slidably mounted cantilever, at the free end of a support arm for the gripping pliers is pivotally mounted, such that, if necessary, this together with the support arm from the Drahtverformungs Scheme is swung out.
  • the swinging out of the support arm can be done by an electric motor, hydraulically or manually. In the latter case, pivoting out can be assisted by a spring drive.
  • the device shown schematically in Figures 1 and 2, namely spring winding and bending machine 10 has a base 16 and a machine unit 17, the latter comprising a wire guide 11, the junction 13 is preceded by a wire feed device 15 and a so-called.
  • Wire axis 12th defining opening 14 in the wire trajectory 18 hineinbewegbare wire processing tools 19, 20, 21 and 22, in particular bending and cutting tools are assigned.
  • the wire processing tools are indicated in Figure 1 as well as in Figure 2 with double-dot-dashed arrows, the double arrows indicate the radial direction of movement relative to the wire axis 12.
  • the effective range of the mentioned processing tools defines a wire forming area 23 on the outlet side of the wire guide 11.
  • a shaped wire section or wire shaped article 26 separated from the remaining wire can be brought out of the wire forming area 23.
  • the transfer device 25 is mounted reciprocally displaceably above the opening 14 of the wire guide 11 in the direction parallel to the wire axis 12 (double arrow 27), in such a way that the gripping tongs 24 assigned to the transfer device form the shaped one Wire section or wire blank 26 after its separation from the rest of the wire in a position in which the longitudinal axis of the severed wire end 28 is aligned with the wire axis 12.
  • the gripper 24 is mounted in the illustrated embodiment to the wire axis 12 back and herverschwenkbar. This allows the severed wire end 28 of the wire blank 26 to bend into any conceivable radial position.
  • the pivotability of the gripping tool 24 about the wire axis 12 is indicated in FIGS. 1 and 2 by the double arrow 29.
  • the transfer device 25 comprises a parallel to the wire axis 12 slidably mounted (double arrow 27) cantilever 31, at its free, namely front end of a support arm 32 for the gripping tongs 24 pivotally mounted (double arrow 33) is such that if necessary, these swung out of the wire forming region 23 is.
  • two drives in particular electromotive drives can be arranged, one of which serves to pivot the support arm 32 and the other for actuating the gripping tongs 24. These drives are not shown in Figures 1 and 2.
  • the pivoting of the support arm 25 about a parallel to the wire axis 12 extending pivot axis 34 can also be done manually if necessary.
  • the gripping tongs 24 or alternatively the retaining arm 25 is preferably fastened to a cross slide such that the gripping tongs can be moved vertically (double arrow 35) and / or horizontally (double arrow 36) if required.
  • the separated spring blank 26 is additionally manipulated in the wire forming region 23 or the wirewashing tools existing there arbitrary deliverable. It is also conceivable to store the gripping tongs 24 on the holding arm 25 in a vertically displaceable manner, while the holding arm 25 is connected to the cantilever 31 via a horizontal guide or vice versa.
  • the horizontal and / or vertical mobility of the grasping forceps directly or indirectly is optional. It is necessary in any case, the horizontal movability of the transfer device 25 parallel to the wire axis 12 and the pivoting of the gripper 24 to the wire axis 12th
  • the wire 37 moved out of the opening 14 of the wire guide 11 can be delivered from the front to a wire bending roller 38, which in the present case is fastened to the holding arm 32, namely via a holding and storage unit 39 the Drahtbiegerolle 38, which is a so-called.
  • Nutrolle, ie Roller with circumferential groove is, with the support arm 32 both vertically and horizontally movable.
  • the wire bending roller 38 should still be pivotable about an axis 40 parallel to the wire axis 12 (see double arrow 41 in FIGS. 1 and 2).
  • the wire bending roller 38 In order to the inclination of the wire bending roller 38 is adjustable relative to a vertical plane through the wire axis 12 therethrough. This setting determines the pitch of a coil spring section made by means of the wire bending roller 38.
  • the wire bending roller 38 is the deliverable from the wire guide wire 37 deliverable so that the pivot axis 40 of the wire bending roller 38 is aligned with the wire axis 12.
  • the wire bending roll 38 together with the associated holding and bearing unit 39 can also be provided as a separate component. A connection with the described transfer device 25 is therefore not necessary. This offers itself only in the present case in the described and illustrated manner.
  • the holding and bearing unit 39 comprises separate measures for horizontal and vertical displacement of the retaining roller 38 in order to bring them into a desired position relative to the exiting wire 37 can.
  • the cantilever 31 for example, by means of a hydraulic or electromotive drive in the direction parallel to the wire axis 12 back and forth.
  • the vertical and horizontal displacement of the support arm 25 in the direction of the double arrows 35, 36 can also be done by means of hydraulic or electric motor drives. These are then preferably on the support arm 25th
  • the transfer device 25 has an L-shaped basic shape, wherein the long leg by the support arm 31 and the short leg are defined by the support arm 32. At the wire outlet 14 facing side of the support arm 25 is the gripping tongs 24. Der Retaining arm 25 can be pivoted about the axis 34 up completely from the wire forming region 23.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Formen von Draht, insbesondere Federwinde- und -Biegemaschine, mit einer Drahtführung, deren Einmündung eine Drahtvorschubeinrichtung vorgeordnet ist und deren eine sog. Drahtachse definierenden Ausmündung in die Drahtbewegungsbahn hineinbewegbare Drahtbearbeitungswerkzeuge, insbesondere Biege- und Schneidwerkzeuge zugeordnet sind, und mit einer eine Greifzange umfassenden Transfereinrichtung, mittels der ein geformter und vom übrigen Draht abgetrennter Drahtabschnitt aus dem Drahtformungsbereich herausführbar ist.The invention relates to a device for forming wire, in particular spring-winding and bending machine, with a wire guide whose junction is preceded by a wire feed device and whose so-called. Wire axis defining muzzle into the wire movement path movable wire processing tools, in particular bending and cutting tools are assigned, and with a gripping device comprising transfer means, by means of which a shaped wire section separated from the remaining wire can be led out of the wire forming area.

Derartige Vorrichtungen bzw. Maschinen sind allgemein bekannt. Das Drahtformen erfolgt durch Winden und/oder Biegen, insbesondere zum Herstellen von Torsionsfedern, Zugfedern, Zugfedern mit beidseitig angebogenen Stielösen und von Biegeteilen mit zum Beispiel gekrümmten Abschnitten mit beliebigen Krümmungsradien, wobei die Vorrichtung bzw. Maschine üblicherweise mit einer einlassseitig angeordneten kontinuierlich oder wahlweise intermittierend arbeitenden Drahtvorschubeinrichtung, mit einer Drahtführung und mehreren an der Auslassseite der Drahtführung angeordneten gesteuerten Werkzeugen versehen ist, die in wählbarer Reihenfolge quer und ggf. längs zu dem aus der Drahtführung austretenden Draht bewegbar sind. Der aus der Drahtführung austretende Draht definiert die sog. Drahtachse, in Relation zu der sämtliche Drahtbearbeitungswerkzeuge, nämlich Biege- und Schneidwerkzeuge eingestellt sind. Zum Stand der Technik wird nur beispielhaft verwiesen auf die Schenkelfederwinde- und -Biegemaschine gemäß der DE 39 15 784 C1 oder die Federherstellungsvorrichtung gemäß der DE 44 47 253 A1. In diesen Druckschriften ist sehr ausführlich die Verformung eines Drahtes zur Herstellung von Federn der verschiedensten Art dargestellt. Darüber hinaus ist es bekannt, dem Drahtverformungsbereich zusätzlich eine sog. Transfereinrichtung zuzuordnen, die eine Greifzange für den verformten und vom übrigen Draht abgetrennten Drahtabschnitt aufweist. Mittels dieser Transfereinrichtung wird der verformte Drahtabschnitt aus dem Drahtverformungsbereich herausgeführt, und vorzugsweise an eine weitere Bearbeitungsstation übergeben, in der dann das abgetrennte Drahtende in gewünschter Weise zu Ende verformt wird. Bei einer bekannten Drahtverformungsmaschine ist die Transfereinrichtung auf einem vor dem Drahtverformungsbereich angeordneten Tisch in Richtung parallel zur Drahtachse hin- und herverschiebbar gelagert. Diese Anordnung behindert den freien Zugang zum Drahtverformungsbereich. Die Handhabung und Kontrolle wird dadurch erheblich erschwert. Auch ist nachteilig, dass dadurch die Baulänge der Maschine um die Baulänge der Transfereinrichtung vergrößert wird. Dabei ist zu bedenken, dass zwischen der Auslassseite bzw. Ausmündung der Drahtführung und der Transfereinrichtung noch ein sog. Fallraum für abgetrennte Drahtformlinge vorgesehen sein muß, in dem zumeist eine Transportkiste zum Sammeln der bearbeiteten Drahtformlinge positioniert wird. Bei der beschriebenen Anordnung der Transfereinrichtung ist diese Kiste bzw. der erwähnte Fallraum nur von der Seite her zugänglich. Dieser Zugang wird jedoch in der Regel von seitlich angeordneten Werkzeugtischen behindert. Nach alledem stellt sich die Anordnung der erwähnten Transfereinrichtung vor dem Drahtverformungsbereich als äußerst nachteilig dar.Such devices or machines are well known. Wire forming takes place by winding and / or bending, in particular for producing torsion springs, tension springs, tension springs with stems which are bent on both sides and bent parts with, for example, curved sections with arbitrary radii of curvature, the device or machine usually having a inlet side arranged continuously or optionally intermittently working wire feed device is provided with a wire guide and a plurality of arranged on the outlet side of the wire guide controlled tools, which are movable in selectable order transversely and optionally longitudinally to the emerging from the wire guide wire. The one out of the wire guide Emerging wire defines the so-called. Wire axis, in relation to all wire processing tools, namely bending and cutting tools are set. The prior art is by way of example only reference to the leg spring and bending machine according to DE 39 15 784 C1 or the spring manufacturing device according to DE 44 47 253 A1. In these documents, the deformation of a wire for the production of springs of various kinds is shown in great detail. In addition, it is known to additionally assign a so-called transfer device to the wire-forming area, which has gripping tongs for the deformed wire section separated from the remaining wire. By means of this transfer device, the deformed wire section is led out of the wire-forming region, and preferably transferred to a further processing station, in which then the severed wire end is deformed in the desired manner to the end. In a known wire forming machine, the transfer device is mounted on a front of the Drahtverformungsbereich arranged table in the direction parallel to the wire axis and herverschiebbar. This arrangement hinders free access to the wire deformation area. The handling and control is made considerably more difficult. It is also disadvantageous that thereby the overall length of the machine is increased by the length of the transfer device. It should be noted that between the outlet side or the mouth of the wire guide and the transfer device still a so-called. Falling space must be provided for severed wire blanks in which usually a transport box for collecting the processed wire blanks is positioned. In the described arrangement of the transfer device, this box or the mentioned case space is accessible only from the side. However, this access is usually hindered by laterally arranged tool tables. After all, the arrangement of the aforementioned transfer device before the Drahtverformungsbereich is extremely disadvantageous.

Die Dokumente DE-U-2 950 28 97 und US-A-4 947 670 beschreiben in ihrer Zusammenschau, als aufeinander im Sinne einer Ergänzung bezogene Dokumente, eine Vorrichtung zum Formung von Draht, insbesondere Federwinde- und -biegemaschine, nach dem Oberbegriff des Anspruchs 1.The documents DE-U-2 950 28 97 and US-A-4 947 670 describe in their synopsis, as documents related to each other in the sense of a supplement, a device for forming wire, in particular spring winding and bending machine, according to the preamble of Claim 1.

Der vorliegenden Erfindung liegt dementsprechend die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, die sich durch eine geringere Baulänge und guten Zugang zum Drahtverformungsbereich auszeichnet.The present invention is therefore an object of the invention to provide a device of the type mentioned above, which is characterized by a smaller overall length and good access to the Drahtverformungsbereich.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruches 1 gelöst. Der Kern der vorliegenden Erfindung liegt also darin, dass die Transfereinrichtung oberhalb der Ausmündung der Drahtführung in Richtung parallel zur Drahtachse hin- und herverschiebbar gelagert ist, und zwar derart, dass die der Transfereinrichtung zugeordnete Greifzange den geformten Drahtabschnitt nach dessen Abtrennung vom übrigen Draht in einer Lage hält, in der die Längsachse des abgetrennten Drahtendes mit der Drahtachse fluchtet. Mit diesen Maßnahmen werden mehrere Vorteile gleichzeitig erreicht, und zwar wie folgt:

  1. 1. Der Drahtverformungsbereich ist von vorne her im wesentlichen ungehindert zugänglich, und zwar bis zum Boden, auf dem die Maschine abgestellt ist.
  2. 2. Dadurch, dass das abgetrennte Drahtende des Drahtformlings mit der Drahtachse fluchtet, können zur Bearbeitung dieses Drahtendes die bereits vorhandenen und auf die Drahtachse eingestellten Biegewerkzeuge verwendet werden. Zur Bearbeitung des abgetrennten Drahtendes ist es also nicht mehr unbedingt erforderlich, den Formling an eine zweite Bearbeitungsstation weiterzureichen.
  3. 3. Die Baulänge der Maschine in Richtung parallel zur Drahtachse kann im Vergleich zum Stand der Technik erheblich reduziert werden mit der Folge eines geringeren Aufstellplatzes für die Maschine.
This object is achieved by the features of claim 1. The core of the present invention thus lies in the fact that the transfer device is mounted above the outlet of the wire guide in the direction parallel to the wire axis back and forth, in such a way that the transfer device associated gripper the shaped wire section after its separation from the rest of the wire in a Holds position in which the longitudinal axis of the severed wire end is aligned with the wire axis. With these measures, several advantages are achieved simultaneously, as follows:
  1. 1. The Drahtverformungsbereich is accessible from the front substantially unhindered, to the ground on which the machine is parked.
  2. 2. The fact that the severed wire end of the wire blank is aligned with the wire axis, the already existing and set on the wire axis bending tools can be used to process this wire end. For processing the severed wire end, it is therefore no longer absolutely necessary to pass on the shaped article to a second processing station.
  3. 3. The length of the machine in the direction parallel to the wire axis can be significantly reduced compared to the prior art, resulting in a smaller space for the machine.

Vorteilhafte Weiterbildungen und Details der erfindungsgemäßen Vorrichtung sind in den Unteransprüchen beschrieben, wobei von besonderer Bedeutung die Konstruktion nach Anspruch 7 ist, wonach dem aus der Ausmündung der Drahtführung herausbewegten Draht von vorne her eine Drahtbiegerolle zustellbar sein soll, die vertikal und/oder horizontal verschiebbar und um eine Achse parallel zur Drahtachse verschwenkbar gelagert ist. Die Drahtbiegerolle ist als Nutrolle ausgebildet, wobei der Querschnitt etwa halbkreisförmig ist. Der Durchmesser der Rollennut entspricht in etwa dem Durchmesser des zu verformenden Drahtes. Mittels einer solchen Drahtbiegerolle kann der Draht relativ einfach zu einer Schraubenfeder gebunden werden, wobei die Steigung der Windungen durch Verschwenken der Drahtbiegerolle um eine Achse parallel zur Drehachse eingestellt wird. Die Drahtbiegerolle hat den Vorteil, dass sie sich beim Biegen des auftreffenden Drahtes dreht mit der Folge, dass der Verschleiß der Drahtverformungsfläche reduziert wird. Der Draht trifft zur Verformung nicht stets auf dieselbe Stelle bzw. auf denselben Punkt des Drahtverformungswerkzeuges auf. Damit lassen sich erheblich mehr Federn mit ein und demselben Werkzeug, d.h. ohne Werkzeugwechsel herstellen als mit den herkömmlichen statischen Drahtverformungswerkzeugen, bei denen auch zur Änderung der Steigung ein Werkzeugwechsel erforderlich ist. Die erwähnte Verfahrbarkeit der Drahtbiegerolle in vertikaler und/oder horizontaler Richtung erlaubt in einfacher Weise die Einstellung des Federdurchmessers. Der Federdurchmesser hängt vom Auftreffpunkt des Drahtes auf dem Umfang der Drahtbiegerolle ab. Nach alledem handelt es sich bei der erwähnten Drahtbiegerolle und deren Lagerung um ein äußerst vorteilhaftes, nämlich universelles Drahtverformungswerkzeug. Dieses kann vorzugsweise am Haltearm der Transfereinrichtung angeordnet, und zwar insbesondere über eine an dieser gesondert befestigbaren Halte- und Lager einheit. Die Positionierung der Drahtbiegerolle kann manuell oder auch elektromotorisch erfolgen. In letztgenannten Fall ist der Drahtbiegerolle wenigstens ein Antrieb zugeordnet, nämlich ein Antrieb zum Verschwenken derselben um eine Achse parallel zur Drahtachse. Die Vertikal- und Horizontalverschiebung erfolgt durch entsprechende Bewegung des Haltearms der Transfereinrichtung. Gleiches gilt für die Verschiebung parallel zur Drahtachse. Auch diese erfolgt über eine entsprechende Positionierung der Transfereinrichtung bzw. des der Transfereinrichtung zugeordneten Kragbalkens gemäß Anspruch 3.Advantageous developments and details of the device according to the invention are described in the subclaims, of particular importance is the construction according to claim 7, according to which the wire moved out of the mouth of the wire guide wire from the front of a wire bending roll should be deliverable vertically and / or horizontally displaceable and is mounted pivotably about an axis parallel to the wire axis. The wire bending roller is designed as a groove, the cross section is approximately semicircular. The diameter of the roller groove corresponds approximately to the diameter of the wire to be deformed. By means of such a wire bending roller, the wire can be relatively easily tied to a coil spring, wherein the pitch of the turns is adjusted by pivoting the wire bending roller about an axis parallel to the axis of rotation. The wire bending roller has the advantage that it rotates when bending the incident wire, with the result that the wear of the wire deformation surface is reduced. The wire does not always strike the same place or point of the wire forming tool for deformation. This allows significantly more springs with one and the same tool, ie produce without tool change than with the conventional static wire forming tools in which a tool change is also required to change the slope. The mentioned movability of the wire bending roller in the vertical and / or horizontal direction allows in a simple way the adjustment of the spring diameter. The spring diameter depends on the point of impact of the wire on the circumference of the wire bending roller. After all, the mentioned wire bending roller and its storage is an extremely advantageous, namely universal wire forming tool. This can preferably be arranged on the support arm of the transfer device, in particular via a separately attachable to this holding and storage unit. The positioning of the wire bending roller can be done manually or by electric motor. In the latter case is the wire bending roller assigned at least one drive, namely a drive for pivoting the same about an axis parallel to the wire axis. The vertical and horizontal displacement is effected by corresponding movement of the support arm of the transfer device. The same applies to the displacement parallel to the wire axis. This is also done via a corresponding positioning of the transfer device or of the transfer device associated Kragbalkens according to claim 3.

Da es sich bei der erwähnten Greifzange und den erwähnten Drahtverformungswerkzeugen sowie Schneidwerkzeugen um herkömmliche Baueinheiten handelt, erübrigt sich hier eine nähere Beschreibung derselben. Zur Greifzange sei lediglich erwähnt, dass diese zwei verschwenkbar gelagerte Greifbacken umfasst, deren einander zugewandte Innenseiten eine Rillung aufweisen, die der Außenkontur eines hergestellten Federabschnitts über die gesamte Länge desselben entspricht. Damit kann der Federabschnitt des Drahtformlings fest umgriffen werden, und zwar so, dass bei einer weiteren Verformung des abgetrennten Drahtendes der Federabschnitt starr gehalten ist.Since it is in the aforementioned gripping pliers and the mentioned wire forming tools and cutting tools to conventional units, there is no need for a closer description of the same. For gripping tongs is merely mentioned that this comprises two pivotally mounted gripping jaws whose mutually facing inner sides have a groove which corresponds to the outer contour of a manufactured spring portion over the entire length thereof. Thus, the spring portion of the wire blank can be firmly embraced, in such a way that is held rigidly in a further deformation of the severed wire end of the spring portion.

Um bei Bedarf den Zugang zum Drahtverformungsbereich zusätzlich zu erleichtern, ist die Greifzange aus dem Drahtverformungsbereich herausschwenkbar. Vorzugsweise umfasst die Transfereinrichtung einen parallel zur Drahtachse verschiebbar gelagerten Kragbalken, an dessen freiem Ende ein Haltearm für die Greifzange verschwenkbar gelagert ist, derart, dass bei Bedarf diese samt Haltearm aus dem Drahtverformungsbereich herausschwenkbar ist. Das Herausschwenken des Haltearms kann elektromotorisch, hydraulisch oder auch manuell erfolgen. In letztgenanntem Fall lässt sich das Herausschwenken durch einen Federantrieb unterstützen.In order to additionally facilitate access to the Drahtverformungsbereich when needed, the gripping pliers from the Drahtverformungsbereich is swung out. Preferably, the transfer device comprises a parallel to the wire axis slidably mounted cantilever, at the free end of a support arm for the gripping pliers is pivotally mounted, such that, if necessary, this together with the support arm from the Drahtverformungsbereich is swung out. The swinging out of the support arm can be done by an electric motor, hydraulically or manually. In the latter case, pivoting out can be assisted by a spring drive.

Nachstehend wird ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung anhand der beigefügten Zeichnungen näher erläutert. Es zeigen:

Fig. 1
ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung in schematischer Vorderansicht; und
Fig. 2
die Vorrichtung gemäß Fig. 1 in schematischer Seitenansicht.
An exemplary embodiment of a device according to the invention will be explained in more detail below with reference to the attached drawings. Show it:
Fig. 1
an embodiment of a device according to the invention in a schematic front view; and
Fig. 2
the device of FIG. 1 in a schematic side view.

Da Maschinen der hier genannten Art im Grunde nach bekannt sind, beschränkt sich die Anmelderin auf eine äußerst schematische Darstellungsweise. Lediglich die erfindungsgemäß vorgesehene Transfereinrichtung ist etwas genauer dargestellt ebenso wie die erfindungsgemäße Anordnung und Lagerung einer Drahtbiegerolle.Since machines of the type mentioned here are basically known, the applicant is limited to a very schematic representation. Only the inventively provided transfer device is shown somewhat more precisely as well as the arrangement and storage of a wire bending roller according to the invention.

Die in den Figuren 1 und 2 schematisch dargestellte Vorrichtung, nämlich Federwinde- und -Biegemaschine 10 weist ein Untergestell 16 und eine Maschineneinheit 17 auf, wobei letztere eine Drahtführung 11 umfaßt, deren Einmündung 13 eine Drahtvorschubeinrichtung 15 vorgeordnet ist und deren eine sog. Drahtachse 12 definierenden Ausmündung 14 in die Drahtbewegungsbahn 18 hineinbewegbare Drahtbearbeitungswerkzeuge 19, 20, 21 und 22, insbesondere Biege- und Schneidwerkzeuge zugeordnet sind. Die Drahtbearbeitungswerkzeuge sind in Figur 1 ebenso wie in Figur 2 mit Doppel-Strichpunkt-Pfeilen angedeutet, wobei die Doppelpfeile die radiale Bewegungsrichtung relativ zur Drahtachse 12 anzeigen.The device shown schematically in Figures 1 and 2, namely spring winding and bending machine 10 has a base 16 and a machine unit 17, the latter comprising a wire guide 11, the junction 13 is preceded by a wire feed device 15 and a so-called. Wire axis 12th defining opening 14 in the wire trajectory 18 hineinbewegbare wire processing tools 19, 20, 21 and 22, in particular bending and cutting tools are assigned. The wire processing tools are indicated in Figure 1 as well as in Figure 2 with double-dot-dashed arrows, the double arrows indicate the radial direction of movement relative to the wire axis 12.

Der Wirkbereich der erwähnten Bearbeitungswerkzeuge definiert einen Drahtformungsbereich 23 an der Auslassseite der Drahtführung 11.The effective range of the mentioned processing tools defines a wire forming area 23 on the outlet side of the wire guide 11.

Mit einer eine Greifzange umfassenden Transfereinrichtung 25 ist ein geformter und vom übrigen Draht abgetrennter Drahtabschnitt bzw. Drahtformling 26 aus dem Drahtformungsbereich 23 herausführbar.With a transfer device 25 comprising a gripping tongs, a shaped wire section or wire shaped article 26 separated from the remaining wire can be brought out of the wire forming area 23.

Wie die Figuren 1 und 2 gut erkennen lassen, ist die Transfereinrichtung 25 oberhalb der Ausmündung 14 der Drahtführung 11 in Richtung parallel zur Drahtachse 12 hin- und herverschiebbar gelagert (Doppelpfeil 27), und zwar derart, dass die der Transfereinrichtung zugeordnete Greifzange 24 den geformten Drahtabschnitt bzw. Drahtformling 26 nach dessen Abtrennung vom übrigen Draht in einer Lage hält, in der die Längsachse des abgetrennten Drahtendes 28 mit der Drahtachse 12 fluchtet. Wie bereits eingangs erwähnt, kann damit das Drahtende 28 mittels den auf die Drahtachse 12 eingestellten Werkzeugen 19 bis 22 in gewünschter Weise weiterverformt werden, ohne dass der Drahtformling 26 zu einer weiteren Bearbeitungsstation gefördert werden muß. Die Greifzange 24 ist bei der dargestellten Ausführungsform um die Drahtachse 12 hin- und herverschwenkbar gelagert. Damit lässt sich das abgetrennte Drahtende 28 des Drahtformlings 26 in jede denkbare Radialstellung verbiegen. Die Verschwenkbarkeit des Greifwerkzeuges 24 um die Drahtachse 12 ist in den Figuren 1 und 2 mit dem Doppelpfeil 29 gekennzeichnet.As can be clearly seen in FIGS. 1 and 2, the transfer device 25 is mounted reciprocally displaceably above the opening 14 of the wire guide 11 in the direction parallel to the wire axis 12 (double arrow 27), in such a way that the gripping tongs 24 assigned to the transfer device form the shaped one Wire section or wire blank 26 after its separation from the rest of the wire in a position in which the longitudinal axis of the severed wire end 28 is aligned with the wire axis 12. As already mentioned, so that the wire end 28 can be further deformed by means of the set on the wire axis 12 tools 19 to 22 in the desired manner without the wire blank 26 must be promoted to another processing station. The gripper 24 is mounted in the illustrated embodiment to the wire axis 12 back and herverschwenkbar. This allows the severed wire end 28 of the wire blank 26 to bend into any conceivable radial position. The pivotability of the gripping tool 24 about the wire axis 12 is indicated in FIGS. 1 and 2 by the double arrow 29.

Des weiteren ist in Figur 2 die Verschwenkbarkeit der beiden Greifbacken der Greifzange 24 um zugeordnete Schwenkachsen mit den Doppelpfeilen 30 angedeutet.Furthermore, in FIG. 2, the pivotability of the two gripping jaws of the gripper tong 24 is indicated by associated pivot axes with the double arrows 30.

Die Transfereinrichtung 25 umfaßt einen parallel zur Drahtachse 12 verschiebbar gelagerten (Doppelpfeil 27) Kragbalken 31, an dessen freiem, nämlich vorderem Ende ein Haltearm 32 für die Greifzange 24 verschwenkbar (Doppelpfeil 33) gelagert ist derart, dass bei Bedarf diese aus dem Drahtformungsbereich 23 herausschwenkbar ist.The transfer device 25 comprises a parallel to the wire axis 12 slidably mounted (double arrow 27) cantilever 31, at its free, namely front end of a support arm 32 for the gripping tongs 24 pivotally mounted (double arrow 33) is such that if necessary, these swung out of the wire forming region 23 is.

Am Haltearm 25 können zwei Antriebe, insbesondere elektromotorische Antriebe angeordnet sein, von denen der eine zum Verschwenken des Haltearms 32 und der andere zur Betätigung der Greifzange 24 dient. Diese Antriebe sind in den Figuren 1 und 2 nicht dargestellt. Das Verschwenken des Haltearms 25 um eine sich parallel zur Drahtachse 12 erstreckende Schwenkachse 34 kann bei Bedarf auch manuell erfolgen.On the support arm 25, two drives, in particular electromotive drives can be arranged, one of which serves to pivot the support arm 32 and the other for actuating the gripping tongs 24. These drives are not shown in Figures 1 and 2. The pivoting of the support arm 25 about a parallel to the wire axis 12 extending pivot axis 34 can also be done manually if necessary.

Die Greifzange 24 oder alternativ der Haltearm 25 ist vorzugsweise an einem Kreuzschlitten befestigt derart, dass die Greifzange bei Bedarf vertikal (Doppelpfeil 35) und/oder horizontal (Doppelpfeil 36) verfahrbar ist. Damit ist der abgetrennte Federformling 26 zusätzlich im Drahtformungsbereich 23 manipulierbar bzw. den dort vorhandenen Drahtbearbeitungswerkzeugen beliebig zustellbar. Es ist auch denkbar, die Greifzange 24 am Haltearm 25 vertikal verschiebbar zu lagern, während der Haltearm 25 mit dem Kragbalken 31 über eine Horizontalführung verbunden ist bzw. umgekehrt. Die Horizontal- und/oder Vertikal-Verfahrbarkeit der Greifzange unmittelbar oder mittelbar ist optional. Notwendig ist auf jeden Fall die horizontale Verfahrbarkeit der Transfereinrichtung 25 parallel zur Drahtachse 12 sowie die Verschwenkbarkeit der Greifzange 24 um die Drahtachse 12.The gripping tongs 24 or alternatively the retaining arm 25 is preferably fastened to a cross slide such that the gripping tongs can be moved vertically (double arrow 35) and / or horizontally (double arrow 36) if required. Thus, the separated spring blank 26 is additionally manipulated in the wire forming region 23 or the wirewashing tools existing there arbitrary deliverable. It is also conceivable to store the gripping tongs 24 on the holding arm 25 in a vertically displaceable manner, while the holding arm 25 is connected to the cantilever 31 via a horizontal guide or vice versa. The horizontal and / or vertical mobility of the grasping forceps directly or indirectly is optional. It is necessary in any case, the horizontal movability of the transfer device 25 parallel to the wire axis 12 and the pivoting of the gripper 24 to the wire axis 12th

Wie bereits ebenfalls eingangs erwähnt, kann dem aus der Ausmündung 14 der Drahtführung 11 herausbewegten Draht 37 von vorne her eine Drahtbiegerolle 38 zustellbar sein, wobei diese im vorliegenden Fall am Haltearm 32 befestigt ist, und zwar über eine Halte- und Lagereinheit 39. Dementsprechend ist die Drahtbiegerolle 38, bei der es sich um eine sog. Nutrolle, d.h. Rolle mit Umfangsnut handelt, mit dem Haltearm 32 sowohl vertikal als auch horizontal bewegbar. Zusätzlich soll die Drahtbiegerolle 38 noch um eine Achse 40 parallel zur Drahtachse 12 verschwenkbar sein (siehe Doppelpfeil 41 in Figur 1 und 2).As already mentioned at the outset, the wire 37 moved out of the opening 14 of the wire guide 11 can be delivered from the front to a wire bending roller 38, which in the present case is fastened to the holding arm 32, namely via a holding and storage unit 39 the Drahtbiegerolle 38, which is a so-called. Nutrolle, ie Roller with circumferential groove is, with the support arm 32 both vertically and horizontally movable. In addition, the wire bending roller 38 should still be pivotable about an axis 40 parallel to the wire axis 12 (see double arrow 41 in FIGS. 1 and 2).

Damit ist die Neigung der Drahtbiegerolle 38 relativ zu einer Vertikalebene durch die Drahtachse 12 hindurch einstellbar. Diese Einstellung bestimmt die Steigung eines Mittels der Drahtbiegerolle 38 hergestellten Schraubenfederabschnitts. Vorzugsweise ist die Drahtbiegerolle 38 dem aus der Drahtführung austretenden Draht 37 so zustellbar, dass die Schwenkachse 40 der Drahtbiegerolle 38 mit der Drahtachse 12 fluchtet.In order to the inclination of the wire bending roller 38 is adjustable relative to a vertical plane through the wire axis 12 therethrough. This setting determines the pitch of a coil spring section made by means of the wire bending roller 38. Preferably, the wire bending roller 38 is the deliverable from the wire guide wire 37 deliverable so that the pivot axis 40 of the wire bending roller 38 is aligned with the wire axis 12.

Die Drahtbiegerolle 38 zusammen mit der zugeordneten Halte- und Lagereinheit 39 kann auch als gesondertes Bauteil vorgesehen sein. Eine Verbindung mit der beschriebenen Transfereinrichtung 25 ist also nicht notwendige Voraussetzung. Diese bietet sich nur im vorliegenden Fall in der beschriebenen und dargestellten Weise an.The wire bending roll 38 together with the associated holding and bearing unit 39 can also be provided as a separate component. A connection with the described transfer device 25 is therefore not necessary. This offers itself only in the present case in the described and illustrated manner.

Bei unabhängiger Anordnung der Drahtbiegerolle 38 umfaßt die Halte- und Lagereinheit 39 gesonderte Maßnahmen zur Horizontal- und Vertikalverschiebung der Halterolle 38, um diese in eine gewünschte Position relativ zum austretenden Draht 37 bringen zu können.With independent arrangement of the wire bending roller 38, the holding and bearing unit 39 comprises separate measures for horizontal and vertical displacement of the retaining roller 38 in order to bring them into a desired position relative to the exiting wire 37 can.

Der Kragbalken 31 ist zum Beispiel mittels eines hydraulischen oder elektromotorischen Antriebs in Richtung parallel zur Drahtachse 12 hin- und herbewegbar. Die Vertikal- und Horizontalverschiebung des Haltearmes 25 in Richtung der Doppelpfeile 35, 36 kann ebenfalls mittels hydraulischer oder elektromotorischer Antriebe erfolgen. Diese befinden sich dann vorzugsweise am Haltearm 25.The cantilever 31, for example, by means of a hydraulic or electromotive drive in the direction parallel to the wire axis 12 back and forth. The vertical and horizontal displacement of the support arm 25 in the direction of the double arrows 35, 36 can also be done by means of hydraulic or electric motor drives. These are then preferably on the support arm 25th

Wie Figur 2 sehr gut erkennen lässt, besitzt die Transfereinrichtung 25 eine L-förmige Grundform, wobei der lange Schenkel durch den Tragarm 31 und der kurze Schenkel durch den Haltearm 32 definiert sind. An der der Drahtausmündung 14 zugekehrten Seite des Haltearms 25 befindet sich die Greifzange 24. Der Haltearm 25 läßt sich um die Achse 34 nach oben vollständig aus dem Drahtformungsbereich 23 herausschwenken.As Figure 2 shows very well, the transfer device 25 has an L-shaped basic shape, wherein the long leg by the support arm 31 and the short leg are defined by the support arm 32. At the wire outlet 14 facing side of the support arm 25 is the gripping tongs 24. Der Retaining arm 25 can be pivoted about the axis 34 up completely from the wire forming region 23.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
FederwindemaschineSpring Coiling Machine
1111
Drahtführungwire guide
1212
Drahtachsewire axis
1313
Einmündungjunction
1414
Ausmündungorifice
1515
DrahtvorschubeinrichtungWire feeder
1616
Untergestellundercarriage
1717
Maschineneinheitmachine unit
1818
DrahtbewegungsbahnWire trajectory
1919
Drahtbearbeitungswerkzeug IWire processing tool I
2020
Drahtbearbeitungswerkzeug IIWire processing tool II
2121
Drahtbearbeitungswerkzeug IIIWire processing tool III
2222
Drahtbearbeitungswerkzeug IV, zum Beispiel DrahtschneidwerkzeugWire processing tool IV, for example wire cutting tool
2323
DrahtformungsbereichWire forming area
2424
Greifzangetongs
2525
Transfereinheittransfer unit
2626
Geformter Drahtabschnitt bzw. DrahtformlingShaped wire section or wire molding
2727
Doppelpfeildouble arrow
2828
Abgetrenntes DrahtendeSeparated wire end
2929
Doppelpfeildouble arrow
3030
Doppelpfeildouble arrow
3131
Kragbalkencantilever
3232
Haltearmholding arm
3333
Doppelpfeildouble arrow
3434
Schwenkachseswivel axis
3535
Doppelpfeildouble arrow
3636
Doppelpfeildouble arrow
3737
Drahtwire
3838
DrahtbiegerolleWire bending roller
3939
Halte- und Lagereinheit für DrahtbiegerolleHolding and storage unit for wire bending roller
4040
Schwenkachseswivel axis
4141
Doppelpfeildouble arrow

Claims (11)

  1. Device for the forming of wire, in particular a spring winding and bending machine (10), having a wire guide (11), the inlet (13) of which is mounted in front of a wire feed device (15) and the discharge (14) of which defining a so-called wire axis (12) in the wire's path of movement (18) is disposed with movable wire working tools (19, 20, 21, 22), in particular bending and cutting tools, and having a transfer unit (25) comprising a grip (24) by means of which a shaped wire section (26) separated from the rest of the wire can be guided out of wire-forming area (23), wherein the grip (24) disposed to the transfer unit holds the shaped wire section (26) following its separation from the rest of the wire in such a position that the longitudinal axis of the separated wire end (28) is in alignment with wire axis (12),
    characterized in that
    transfer unit (25) is mounted to move back and forth (27) above discharge (14) of wire guide (11) parallel to wire axis (12).
  2. Device in accordance with claim 1, characterized in that
    grip (24) is pivotably mounted around an axis extending parallel to wire axis (12), in particular around wire axis (12) itself.
  3. Device in accordance with claim 1 or 2, characterized in that
    transfer unit (25) comprises a displaceably-mounted (27) cantilever (31) parallel to wire axis (12) with a support arm (32) for grip (24) pivotably mounted (33) on its free or front end such that same can be pivoted out from wire-forming area (23) as needed.
  4. Device in accordance with claim 3, characterized in that
    two drives, in particular electromotive drives, are arranged on support arm (32), one of which serves for the pivoting of support arm (32) and the other for the operating of grip (24).
  5. Device in accordance with one of claims 1 to 4, characterized in that grip (24) is affixed to a cross slide in such a manner that it is vertically (35) and/or horizontally (36) movable in a plane perpendicular to wire axis (12) as needed.
  6. Device in accordance with one of claims 3 or 4, characterized in that support arm (32) is mounted to be vertically and/or horizontally displaceable in a plane perpendicular to wire axis (12) by means of a cross slide on cantilever (31).
  7. Device in accordance with one of claims 1 to 6, characterized in that wire (37) moved out of discharge (14) of wire guide (11) is deliverable from the front or frontally to a wire-bending roller (38) mounted to be vertically and/or horizontally displaceable and pivotable about an axis (40) parallel to wire axis (12).
  8. Device in accordance with claim 7, characterized in that
    wire-bending roller (38) is arranged on support arm (32) of transfer unit (25), in particular by means of a retaining and support unit (39) separately affixable to same.
  9. Device in accordance with one of claims 3 to 8, characterized in that cantilever (31) can be moved move back and forth parallel to wire axis (12) by means of a hydraulic or electromotive drive.
  10. Device in accordance with one of claims 3 or 5 to 9, characterized in that support arm (32) can be manually pivoted out from wire-forming area (23).
  11. Device in accordance with one of claims 3, 4, or 7 to 10, characterized in that
    grip (24) is mounted on support arm (32) to be vertically movable and support arm (32) is mounted on cantilever (31) to be horizontally movable in a plane perpendicular to wire axis (12) or vice-versa.
EP20030007613 2002-04-05 2003-04-02 Device for the forming of wire, in particular a spring winding and bending machine Expired - Lifetime EP1350581B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10215047 2002-04-05
DE2002115047 DE10215047C1 (en) 2002-04-05 2002-04-05 Spring winding and bending machine includes reciprocating transfer unit holding pre-formed spring end in alignment with feedwire axis

Publications (3)

Publication Number Publication Date
EP1350581A2 EP1350581A2 (en) 2003-10-08
EP1350581A3 EP1350581A3 (en) 2004-06-16
EP1350581B1 true EP1350581B1 (en) 2006-05-24

Family

ID=27762980

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Application Number Title Priority Date Filing Date
EP20030007613 Expired - Lifetime EP1350581B1 (en) 2002-04-05 2003-04-02 Device for the forming of wire, in particular a spring winding and bending machine

Country Status (3)

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EP (1) EP1350581B1 (en)
DE (2) DE10215047C1 (en)
ES (1) ES2271410T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4373417B2 (en) 2006-07-26 2009-11-25 株式会社板屋製作所 Spring manufacturing apparatus and control method thereof
TWM524775U (en) * 2016-01-20 2016-07-01 Huang Xiao Ling Omnidirectional manipulator for spring forming machines
GB201609642D0 (en) * 2016-06-02 2016-07-20 Harrison Spinks Components Ltd Wire shaping apparatus and method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH399390A (en) * 1961-08-11 1965-09-30 Florent Vanhulen Antoine Emile Method and machine for making eyelets at the ends of helical tension springs
JPS58192641A (en) * 1982-05-06 1983-11-10 Matsuoka Eng Kk Precise manufacture of tightly wound tension coil spring
DE3915784C1 (en) * 1989-05-13 1990-07-05 Wafios Maschinenfabrik Gmbh & Co Kg, 7410 Reutlingen, De
US4947670A (en) * 1989-11-07 1990-08-14 Wu Chin Tu Universal automatic spring-making machine
US5444905A (en) * 1994-03-14 1995-08-29 Simmons Company Apparatus for manufacturing mattresses and box springs
JP2675523B2 (en) * 1994-06-30 1997-11-12 株式会社板屋製作所 Spring manufacturing equipment
DE29502897U1 (en) * 1995-02-21 1995-04-20 Wu, Chin-Tu, San-Chung, Taipei Spring bending machine
DE19517260A1 (en) * 1995-05-11 1996-11-14 Spuehl Ag Electronically controlled winch device for mattress and cushion springs

Also Published As

Publication number Publication date
EP1350581A3 (en) 2004-06-16
DE50303420D1 (en) 2006-06-29
ES2271410T3 (en) 2007-04-16
EP1350581A2 (en) 2003-10-08
DE10215047C1 (en) 2003-09-18

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