EP0508199B1 - Method of and device for the continuous production of an expanded metalliforme band - Google Patents

Method of and device for the continuous production of an expanded metalliforme band Download PDF

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Publication number
EP0508199B1
EP0508199B1 EP92104961A EP92104961A EP0508199B1 EP 0508199 B1 EP0508199 B1 EP 0508199B1 EP 92104961 A EP92104961 A EP 92104961A EP 92104961 A EP92104961 A EP 92104961A EP 0508199 B1 EP0508199 B1 EP 0508199B1
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EP
European Patent Office
Prior art keywords
strip
rollers
metal strip
roller pair
roller
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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
Application number
EP92104961A
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German (de)
French (fr)
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EP0508199A1 (en
Inventor
Andreas Dr. Höfer
Waldemar Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ernst Sorst and Co Ges fur Blechverarbeitung Mbh
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Ernst Sorst and Co Ges fur Blechverarbeitung Mbh
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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
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal

Definitions

  • the invention relates to a method for the continuous production of an expanded metal-like, flat strip according to the preamble of claim 1 and to a device for carrying out this method according to the preamble of claim 2.
  • the object of the invention is to provide a method and a device for carrying it out, with which an expanded metal-like, flat strip can be produced in an extremely simple and continuous manner from an endless metal strip with the features of the preamble of claim 1.
  • This object is achieved according to the inventive method in that the metal strip is continuously detected in the region of the side edges of feed means and in that traction means are provided which continuously subject the central region of the metal strip to a tensile force in the longitudinal direction of the strip during the feed movement.
  • the device proposed for performing the method is characterized in that two pairs of outer rollers are used as the feed means and as a traction means an inner roller pair lying between the outer roller pairs is provided, each roller pair forming a gap in which the metal strip lies frictionally, that the peripheral speed of the inner roller pair is greater than that of the outer roller pairs and that the lower roller of the inner roller pair is opposite the assigned upper roller in the feed direction of the metal strip is offset.
  • a device of the type in question is already known from DE-PS 30 48 712, in which the cross-slotted metal strip runs between two rotating stretching rollers, each of which is provided with two circumferential beads opposite a longitudinal strip of the metal strip or a smooth outer surface.
  • the longitudinal strips between the circumferential beads and the lateral surface are stretched, so that the transverse slots of the metal strip widen to form transverse openings.
  • the expansion is achieved by rolling reducing the strip thickness by means of the stretching rollers acting on the strip edge, which is to be avoided in the proposal described here.
  • the upper rollers of the outer roller pair are non-rotatably and the upper roller of the inner roller pair are freely rotatable on a drive shaft, the associated lower rollers of the outer roller pair being freely rotatable and the lower roller of the pair of inner rollers is firmly connected to a drive shaft.
  • FIG. 1 shows a partial top view of the metal strip, which is the starting product of the expanded metal-like, flat structure 2 according to FIG. 2. This structure 2 is produced using the method or device according to the invention.
  • incisions 1a and 1b are provided which are perpendicular to the two side edges of the metal strip 1 and which are spaced apart and parallel to one another and are center-oriented.
  • the incisions 1a are opposite to the incisions 1b.
  • a side edge-oriented incision 1c is provided in the central region of the metal strip 1, which is parallel to the incisions 1a, 1b oriented towards the center of the strip.
  • the metal strip 1 is continuously detected in the region of the side edges of feed means, traction means being provided which continuously subject the central region of the metal strip 1 to a tensile force during the feed movement.
  • traction means being provided which continuously subject the central region of the metal strip 1 to a tensile force during the feed movement.
  • the expanded metal-like, flat strip shown in FIG. 2 of the drawing is formed, in which triangular recesses are formed in the central region and gusset-shaped recesses in the region of the two side edges.
  • Two pairs of outer rollers 3, 4 and 5, 6 serve as feed means, while an inner roller pair 7, 8 lying in between is provided as the traction means, the peripheral speed of the inner roller pair 7, 8 being greater than that of the two outer roller pairs 3, 4 and 5, 6 .
  • Each pair of rollers has an upper roller 3, 5, 7 and lower roller 4, 6, 8 forming a gap, in which gap the endless metal strip 1 lies frictionally.
  • the lower roller 8 of the pair of inner rollers 7, 8 is offset in relation to the assigned upper roller 7 in the feed direction of the metal strip 1 by the amount a, where a corresponds approximately to the distance of the cuts center-oriented from the side edge-oriented cuts.
  • the diameter of the top rollers 3, 5, 7 is the same size; the diameter of the lower rollers 4, 6, 8 is also the same size.
  • the diameter of the lower rollers 4, 6, 8 relates to the diameter of the upper rollers 3, 5, 7 as the length of the stretched metal strip 2 to the length of the undrawn metal strip 1 the peripheral speed of the outer roller pairs 3, 4 and 5, 6 to that of the inner roller pairs 7, 8 as the quotient of the length of the unstretched metal strip 1 and the length of the stretched metal strip 2.
  • the operation of the device for carrying out the method according to the invention is as follows:
  • the metal strip 1 shown in Figure 1 is inserted into the gap between the rollers 3, 7, 5 and 4, 8, 6. Since the top rollers 3, 5 are driven and the bottom rollers 4, 6 act as counter pressure rollers, the metal strip 1 moves continuously in FIG. 3 perpendicular to the plane of the drawing.
  • the outer roller pairs 3, 4 and 5, 6 serve as feed means. Due to the staggered lower roller 8 and the upper roller 7 acting as a counter-pressure roller, a tensile force is continuously exerted on its central region during the advancing movement of the metal strip 1, which ensures that the metal strip 1 shown in FIG. 1 is pulled apart in the manner of an accordion, so that a Expanded metal-like, flat structure is created.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Advancing Webs (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Metal Rolling (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Description

Die Erfindung bezieht sich auf ein Verfahren zur kontinuierlichen Herstellung eines streckmetallartigen, ebenen Bandes entsprechend dem Oberbegriff des Anspruches 1 sowie auf eine Einrichtung zur Durchführung dieses Verfahrens entsprechend dem Oberbegriff des Anspruches 2.The invention relates to a method for the continuous production of an expanded metal-like, flat strip according to the preamble of claim 1 and to a device for carrying out this method according to the preamble of claim 2.

Aufgabe der Erfindung ist es, ein Verfahren bzw. eine Einrichtung zu dessen Durchführung aufzuzeigen, mit welchen in außerordentlich einfacher und kontinuierlicher Weise aus einem endlosen Metallband mit den Merkmalen des Oberbegriffes des Anspruches 1 ein streckmetallartiges, ebenes Band herstellbar ist.The object of the invention is to provide a method and a device for carrying it out, with which an expanded metal-like, flat strip can be produced in an extremely simple and continuous manner from an endless metal strip with the features of the preamble of claim 1.

Diese Aufgabe wird nach dem erfindungsgemäßen Verfahren dadurch gelöst, daß das Metallband im Bereich der Seitenkanten von Vorschubmitteln laufend erfaßt wird und daß Zugmittel vorgesehen sind, welche den Mittelbereich des Metallbandes während der Vorschubbewegung laufend einer Zugkraft in Bandlängsrichtung unterwerfen.This object is achieved according to the inventive method in that the metal strip is continuously detected in the region of the side edges of feed means and in that traction means are provided which continuously subject the central region of the metal strip to a tensile force in the longitudinal direction of the strip during the feed movement.

Die zur Durchführung des Verfahrens vorgeschlagene Einrichtung kennzeichnet sich dadurch, daß als Vorschubmittel zwei Außenrollenpaare und als Zugmittel ein zwischen den Außenrollenpaaren liegendes Innenrollenpaar vorgesehen ist, wobei ein jedes Rollenpaar einen Spalt bildet, in welchem das Metallband reibungsschlüssig liegt, daß die Umfangsgeschwindigkeit des Innenrollenpaares größer ist als diejenige der Außenrollenpaare und daß die Unterrolle des Innenrollenpaares gegenüber der zugeordneten Oberrolle in Vorschubrichtung des Metallbandes versetzt ist.The device proposed for performing the method is characterized in that two pairs of outer rollers are used as the feed means and as a traction means an inner roller pair lying between the outer roller pairs is provided, each roller pair forming a gap in which the metal strip lies frictionally, that the peripheral speed of the inner roller pair is greater than that of the outer roller pairs and that the lower roller of the inner roller pair is opposite the assigned upper roller in the feed direction of the metal strip is offset.

Zwar ist aus der DE-PS 30 48 712 eine Vorrichtung der fraglichen Art bereits bekannt, bei welcher das quergeschlitzte Metallband zwischen zwei rotierenden Streckwalzen hindurchläuft, die jeweils mit zwei einem Längsstreifen des Metallbandes gegenüberliegenden Umfangswulsten bzw. einer glatten Mantelfläche versehen sind. Hierdurch werden die Längsstreifen zwischen den Umfangswulsten und der Mantelfläche gestreckt, so daß sich die Querschlitze des Metallbandes zu Queröffnungen verbreitern. Dort wird die Aufweitung durch ein die Banddicke verringerndes Walzen mittels der am Bandrand angreifenden Streckwalzen erreicht, was bei dem hier beschriebenen Vorschlag vermieden werden soll.A device of the type in question is already known from DE-PS 30 48 712, in which the cross-slotted metal strip runs between two rotating stretching rollers, each of which is provided with two circumferential beads opposite a longitudinal strip of the metal strip or a smooth outer surface. As a result, the longitudinal strips between the circumferential beads and the lateral surface are stretched, so that the transverse slots of the metal strip widen to form transverse openings. There, the expansion is achieved by rolling reducing the strip thickness by means of the stretching rollers acting on the strip edge, which is to be avoided in the proposal described here.

Nach einem weiteren Merkmal der Vorrichtung sind die Oberrollen des Außenrollenpaares drehfest und die Oberrolle des Innenrollenpaares frei drehbar auf einer Antriebswelle gelagert, wobei die zugeordneten Unterrollen des Außenrollenpaares frei drehbar gelagert sind und die Unterrolle des Innenrollenpaares mit einer Antriebswelle in fester Verbindung steht.According to a further feature of the device, the upper rollers of the outer roller pair are non-rotatably and the upper roller of the inner roller pair are freely rotatable on a drive shaft, the associated lower rollers of the outer roller pair being freely rotatable and the lower roller of the pair of inner rollers is firmly connected to a drive shaft.

Weitere Merkmale der Erfindung gehen aus den Unteransprüchen, der Zeichnung sowie der Beschreibung hervor. Die Zeichnung zeigt in rein schematischer Weise:

  • Figur 1 eine Teildraufsicht des endlosen Metallbandes als Ausgangsmaterial des streckmetallartigen, ebenen Gebildes,
  • Figur 2 eine Teildraufsicht des durch die erfindungsgemäße Methode bzw. Einrichtung hergestellten streckmetallartigen, ebenen Gebildes,
  • Figur 3 einen senkrechten Teilschnitt der Einrichtung gemäß der Erfindung,
  • Figur 4 einen senkrechten Schnitt längs der Linie IV-IV in Figur 3.
Further features of the invention emerge from the subclaims, the drawing and the description. The drawing shows in a purely schematic manner:
  • FIG. 1 shows a partial top view of the endless metal strip as the starting material for the expanded metal-like, flat structure,
  • FIG. 2 shows a partial top view of the expanded metal-like, flat structure produced by the method or device according to the invention,
  • FIG. 3 shows a vertical partial section of the device according to the invention,
  • 4 shows a vertical section along the line IV-IV in FIG.

Mit 1 (Figur 1) ist eine Teildraufsicht des Metallbandes dargestellt, welches Ausgangsprodukt des streckmetallartigen, ebenen Gebildes 2 nach Figur 2 ist. Dieses Gebilde 2 wird mit der erfindungsgemäßen Methode bzw. Einrichtung hergestellt.1 (FIG. 1) shows a partial top view of the metal strip, which is the starting product of the expanded metal-like, flat structure 2 according to FIG. 2. This structure 2 is produced using the method or device according to the invention.

Wie die Figur 1 der Zeichnung deutlich macht, sind senkrecht zu den beiden Seitenkanten des Metallbandes 1 stehende Einschnitte 1a bzw. 1b vorgesehen, welche mit Abstand und parallel zueinander liegen und bandmittenorientiert sind. Die Einschnitte 1a liegen den Einschnitten 1b jeweils gegenüber.As FIG. 1 of the drawing makes clear, incisions 1a and 1b are provided which are perpendicular to the two side edges of the metal strip 1 and which are spaced apart and parallel to one another and are center-oriented. The incisions 1a are opposite to the incisions 1b.

Zwischen zwei nebeneinanderliegenden Einschnitten 1a, 1b der beiden Seitenkanten ist im Mittelbereich des Metallbandes 1 ein seitenkantenorientierter Einschnitt 1c vorgesehen, der parallel zu den bandmitteorientierten Einschnitten 1a, 1b liegt.Between two adjacent incisions 1a, 1b of the two side edges, a side edge-oriented incision 1c is provided in the central region of the metal strip 1, which is parallel to the incisions 1a, 1b oriented towards the center of the strip.

Nach der Methode gemäß der Erfindung wird das Metallband 1 im Bereich der Seitenkanten von Vorschubmitteln laufend erfaßt, wobei Zugmittel vorgesehen sind, welche den Mittelbereich des Metallbandes 1 während der Vorschubbewegung laufend einer Zugkraft unterwerfen. Auf diese Weise entsteht das in Figur 2 der Zeichnung dargestellte streckmetallartige, ebene Band, bei welchem im Mittelbereich dreieckförmige und im Bereich der beiden Seitenkanten zwickelförmige Aussparungen gebildet werden.According to the method according to the invention, the metal strip 1 is continuously detected in the region of the side edges of feed means, traction means being provided which continuously subject the central region of the metal strip 1 to a tensile force during the feed movement. In this way, the expanded metal-like, flat strip shown in FIG. 2 of the drawing is formed, in which triangular recesses are formed in the central region and gusset-shaped recesses in the region of the two side edges.

Als Vorschubmittel dienen dabei zwei Außenrollenpaare 3, 4 bzw. 5, 6, während als Zugmittel ein dazwischenliegendes Innenrollenpaar 7, 8 vorgesehen ist, wobei die Umfangsgeschwindigkeit des Innenrollenpaares 7, 8 größer ist als diejenige der beiden Außenrollenpaare 3, 4 bzw. 5, 6.Two pairs of outer rollers 3, 4 and 5, 6 serve as feed means, while an inner roller pair 7, 8 lying in between is provided as the traction means, the peripheral speed of the inner roller pair 7, 8 being greater than that of the two outer roller pairs 3, 4 and 5, 6 .

Ein jedes Rollenpaar weist eine einen Spalt bildende Oberrolle 3, 5, 7 und Unterrolle 4, 6, 8 auf, wobei in diesem Spalt das endlose Metallband 1 reibungsschlüssig liegt. Dabei ist die Unterrolle 8 des Innenrollenpaares 7, 8 gegenüber der zugeordneten Oberrolle 7 in Vorschubrichtung des Metallbandes 1 um den Betrag a versetzt, wobei a ungefähr dem Abstand der bandmittenorientierten Einschnitte von den seitenkantenorientierten Einschnitten entspricht.Each pair of rollers has an upper roller 3, 5, 7 and lower roller 4, 6, 8 forming a gap, in which gap the endless metal strip 1 lies frictionally. The lower roller 8 of the pair of inner rollers 7, 8 is offset in relation to the assigned upper roller 7 in the feed direction of the metal strip 1 by the amount a, where a corresponds approximately to the distance of the cuts center-oriented from the side edge-oriented cuts.

Mit 9 ist eine Antriebswelle bezeichnet, mit welcher die beiden Oberrollen 3, 5 drehfest verbunden sind, während die Oberrolle 7 des Innenrollenpaares 7, 8 auf dieser Antriebswelle 9 frei drehbar gelagert ist. Die Unterrollen 4, 6 sind auf hohlzylinderförmigen Büchsen 10, 11 frei drehbar gelagert, während die Unterrolle 8 des Innenrollenpaares 7, 8 mit einer Antriebswelle 12 fest verbunden ist.9 with a drive shaft is designated, with which the two upper rollers 3, 5 are rotatably connected, while the upper roller 7 of the pair of inner rollers 7, 8 is freely rotatably mounted on this drive shaft 9. The lower rollers 4, 6 are freely rotatably mounted on hollow cylindrical bushes 10, 11, while the lower roller 8 of the pair of inner rollers 7, 8 is firmly connected to a drive shaft 12.

Bei der dargestellten Ausführungsform ist der Durchmesser der Oberrollen 3, 5, 7 gleich groß; ebenso ist der Durchmesser der Unterrollen 4, 6, 8 gleich groß.In the illustrated embodiment, the diameter of the top rollers 3, 5, 7 is the same size; the diameter of the lower rollers 4, 6, 8 is also the same size.

Ist die Drehzahl der Antriebswellen 9, 12 gleich groß, dann verhält sich der Durchmesser der Unterrollen 4, 6, 8 zu dem Durchmesser der Oberrollen 3, 5, 7 wie die Länge des gestreckten Metallbandes 2 zu der Länge des ungestreckten Metallbandes 1. Ebenso verhält sich die Umfangsgeschwindigkeit der Außenrollenpaare 3, 4 bzw. 5, 6 zu derjenigen der Innenrollenpaare 7, 8 wie der Quotient aus der Länge des ungestreckten Metallbandes 1 und der Länge des gestreckten Metallbandes 2.If the speed of the drive shafts 9, 12 is the same, then the diameter of the lower rollers 4, 6, 8 relates to the diameter of the upper rollers 3, 5, 7 as the length of the stretched metal strip 2 to the length of the undrawn metal strip 1 the peripheral speed of the outer roller pairs 3, 4 and 5, 6 to that of the inner roller pairs 7, 8 as the quotient of the length of the unstretched metal strip 1 and the length of the stretched metal strip 2.

Die Arbeitsweise der Einrichtung zur Durchführung des Verfahrens gemäß der Erfindung ist die folgende:
Das in Figur 1 dargestellte Metallband 1 wird in den Spalt zwischen den Rollen 3, 7, 5 und 4, 8, 6 eingeführt. Da die Oberrollen 3, 5 angetrieben sind und die Unterrollen 4, 6 als Gegendruckrollen wirken, bewegt sich in kontinuierlicher Weise das Metallband 1 in Figur 3 senkrecht zur Zeichenebene. Dabei dienen die Außenrollenpaare 3, 4 bzw. 5, 6 als Vorschubmittel. Durch die versetzt angeordnete Unterrolle 8 sowie die als Gegendruckrolle wirkende Oberrolle 7 wird während der Vorschubbewegung des Metallbandes 1 auf seinen Mittelbereich laufend eine Zugkraft ausgeübt, die dafür sorgt, daß das in Figur 1 dargestellte Metallband 1 nach Art einer Ziehharmonika auseinandergezogen wird, so daß ein streckmetallartiges, ebenes Gebilde entsteht.The operation of the device for carrying out the method according to the invention is as follows:
The metal strip 1 shown in Figure 1 is inserted into the gap between the rollers 3, 7, 5 and 4, 8, 6. Since the top rollers 3, 5 are driven and the bottom rollers 4, 6 act as counter pressure rollers, the metal strip 1 moves continuously in FIG. 3 perpendicular to the plane of the drawing. The outer roller pairs 3, 4 and 5, 6 serve as feed means. Due to the staggered lower roller 8 and the upper roller 7 acting as a counter-pressure roller, a tensile force is continuously exerted on its central region during the advancing movement of the metal strip 1, which ensures that the metal strip 1 shown in FIG. 1 is pulled apart in the manner of an accordion, so that a Expanded metal-like, flat structure is created.

Claims (5)

  1. Method of continuously producing an expanded-metal-like, flat strip (2) from a metal strip (1) having incisions (1a, 1b), orientated towards the centre of the strip, perpendicularly to the two longitudinal edges of the strip and parallel to and at a distance from one another, of which those of the one lateral edge are opposite those of the other lateral edge, and between two adjacent incisions (1a, 1b) of the two lateral edges, an incision (1c) orientated towards the lateral edges is provided in the middle zone of the strip, which incision lies parallel to the incisions (1a, 1b) orientated towards the centre of the strip, characterized in that the metal strip (1) is gripped in the region of the lateral edges continually by feed means, and that tension means are provided, which subject the central region of the metal strip (1) continually to a tensile force in the longitudinal direction of the strip during the feed movement.
  2. Apparatus for carrying out the method according to Claim 1, comprising two outer roller pairs (3, 4; 5, 6 respectively) as feed means, characterized in that, as tension means, an inner roller pair (7, 8) situated between the outer rollers is provided, each pair of rollers forming a gap in which the metal strip (1) is frictionally gripped, that the circumferential speed of the inner roller pair (7, 8) is greater than that of the outer roller pairs (3, 4), (5, 6) respectively, and that the lower roller (8) of the inner roller pair (7, 8) is offset in the feed direction of the metal strip (1) relative to the associated upper roller (7).
  3. Apparatus according to Claim 2, characterized in that the upper rollers (3, 5) of the outer roller pair (3, 4; 5, 6 respectively) are keyed to a drive shaft (9) and the upper roller (7) of the inner roller pair (7, 8) is journalled freely rotatable on the drive shaft (9), that the associated lower rollers (4, 6) of the outer roller pair (3, 4; 5, 6 respectively) are freely rotatably journalled and that the lower roller (8) of the inner roller pair (7, 8) is firmly connected to a drive shaft (12).
  4. Apparatus according to Claim 2 or 3, characterized in that the diameters of the upper rollers (3, 5, 7) are all equal.
  5. Apparatus according to one of Claims 2 or 3, characterized in that the diameters of the lower rollers (4, 6, 8) are all equal.
EP92104961A 1991-03-30 1992-03-23 Method of and device for the continuous production of an expanded metalliforme band Expired - Lifetime EP0508199B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4110467 1991-03-30
DE4110467A DE4110467C2 (en) 1991-03-30 1991-03-30 Process and device for the continuous production of an expanded metal-like, flat strip

Publications (2)

Publication Number Publication Date
EP0508199A1 EP0508199A1 (en) 1992-10-14
EP0508199B1 true EP0508199B1 (en) 1994-10-19

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EP92104961A Expired - Lifetime EP0508199B1 (en) 1991-03-30 1992-03-23 Method of and device for the continuous production of an expanded metalliforme band

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DE (2) DE4110467C2 (en)
ES (1) ES2065094T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5199142A (en) * 1991-09-04 1993-04-06 The Gem City Engineering Co. Production of expanded metal strip for reinforcing a resilient product

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5691931A (en) * 1979-12-27 1981-07-25 Toyoda Gosei Co Ltd Production of trim core material
GB2199066B (en) * 1986-12-16 1991-05-15 Silent Channel Prod Ltd A strip structure.

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Publication number Publication date
ES2065094T3 (en) 1995-02-01
EP0508199A1 (en) 1992-10-14
DE4110467C1 (en) 1992-06-17
DE4110467C2 (en) 1997-05-07
DE59200640D1 (en) 1994-11-24

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