EP0582905A2 - Fibre of wire or steel hoop for the reinforcement of concrete or the like and device for the manufacturing of such fibres - Google Patents
Fibre of wire or steel hoop for the reinforcement of concrete or the like and device for the manufacturing of such fibres Download PDFInfo
- Publication number
- EP0582905A2 EP0582905A2 EP93112124A EP93112124A EP0582905A2 EP 0582905 A2 EP0582905 A2 EP 0582905A2 EP 93112124 A EP93112124 A EP 93112124A EP 93112124 A EP93112124 A EP 93112124A EP 0582905 A2 EP0582905 A2 EP 0582905A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fiber
- embossing
- section
- fibres
- fibers
- 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.)
- Withdrawn
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 47
- 229910000831 Steel Inorganic materials 0.000 title claims description 4
- 239000010959 steel Substances 0.000 title claims description 4
- 230000002787 reinforcement Effects 0.000 title claims 2
- 238000004519 manufacturing process Methods 0.000 title description 8
- 230000007704 transition Effects 0.000 claims abstract description 5
- 238000004049 embossing Methods 0.000 claims description 25
- 238000007906 compression Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 9
- 230000006735 deficit Effects 0.000 abstract 1
- 238000004080 punching Methods 0.000 abstract 1
- 239000007858 starting material Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000000109 continuous material Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/012—Discrete reinforcing elements, e.g. fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F45/00—Wire-working in the manufacture of other particular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F45/00—Wire-working in the manufacture of other particular articles
- B21F45/006—Wire-working in the manufacture of other particular articles of concrete reinforcement fibres
Definitions
- the invention relates to a fiber for reinforcing concrete or the like made of wire or flat strip, in particular steel, according to the preamble of claim 1.
- the invention further relates to a device for producing such fibers.
- Fibers of this type for admixing in an initially soft, later hardening material such as concrete are known in various designs.
- Such fibers often consist of an essentially elongated piece of wire with hook-like deformations at its two ends, the ends being angled, cranked or also bent into a closed circle.
- the primary requirement of such fibers is that their shape does not have an unfavorable influence on the miscibility, but that a good binding behavior can nevertheless be achieved in the hardened material and that they can be produced inexpensively.
- the extensive fulfillment of one of these requirements, such as the achievement of a good bond can lead to the mixing behavior and also the production costs being influenced more or less unfavorably.
- the object of the invention is therefore to provide an improved fiber with regard to the greatest possible fulfillment of the three aforementioned basic requirements.
- Another task of the invention is Creation of a suitable facility for producing such fibers.
- the invention provides a fiber for reinforcing concrete or the like made of wire or flat ribbon, in particular steel, in which a shorter, corrugated intermediate section adjoins a straight central section at its ends as a transition to the respective end section.
- each corrugated intermediate section is designed as a double shaft in accordance with an elongated S shape.
- the shafts of the intermediate sections are arranged so that they run in the same plane, mainly for reasons of simplified production.
- the end sections are expediently designed as straight sections and run approximately parallel to the straight central section.
- the end sections have a wedge shape caused by compression at their free end and that the outermost end of the wedge-shaped section is wider than the fiber profile.
- a major advantage of the new fiber is the fact that the deformed sections adjoining the straight central section have smooth and no sharp-edged transitions in the area of the deformations have, whereby the miscibility is influenced favorably. Furthermore, all deformations are designed so that fibers can be produced as a finished product in a single operation; this leads to a considerable reduction in manufacturing costs.
- a device for producing fibers which has two counter-rotating, synchronously rotating embossing wheels, which face each other with a gap corresponding to the thickness of the fiber with their end faces and which have tooth-like projections and depressions which engage with one another on their peripheral jacket surfaces, and in which on the entire circumference with the same angular distance from each other radially standing stamping dies with a triangular profile in the plane of rotation and corresponding pressing stamps with a flat surface are attached to the other stamping wheel.
- the arc distance between two successive pairs of punches is chosen so that it corresponds to the desired length of a finished fiber.
- the embossing stamp and associated pressure stamp are set radially so that when they face each other they touch without pressure. Embossing and pressure stamps are expediently attached to the two embossing wheels in an exchangeable manner.
- the starting material for the production of fibers of the type described above is wire or flat ribbon, which is the continuous material of the two embossing wheels is fed.
- the continuous material is continuously drawn through the gap between the circumferential surfaces of the two embossing wheels by the counter-rotation of the two embossing wheels and is deformed in the desired manner due to the tooth-like projections and depressions on the embossing edges, furthermore by the action of the embossing die and associated
- the finished fibers are separated from the supplied strand material by a pressure stamp by means of a compression and separation process.
- the smaller thickness of the rectangular profile is expediently deformed.
- fibers of this type generally have a total length of approximately 6 cm, although longer lengths are also possible.
- the fiber is composed of a rectilinear central section (1) and shorter, likewise rectilinear end sections (2) which run approximately parallel to the central section (1).
- a corrugated or cranked intermediate section (3) adjoins each end of the central section (1) as a transition to the respective end section (2).
- the intermediate section (3) has an elongated S-shape with a wave crest and a wave trough, the leg (4) of the intermediate section (3) adjacent to the end section (2) being longer than that of the central section (1) adjoining leg (5).
- the length of the leg (4) selected in each case determines the degree of parallel lateral displacement of the end sections (2) with respect to the center section (1). All kinks in the deformation of the fiber are softly curved to avoid sharp edges.
- the outermost end of the two end sections (2) has an approximately dovetail-like profile (6), as can be seen in FIG. 2.
- the dovetail-like end piece is flattened in a wedge shape towards the free end. This shape is created during the production of the fibers, which will be discussed below.
- the length ratios of the individual sections of the fiber and also the angles of the offsets can vary. However, it is expedient to choose the length of an intermediate section (3) 30% or less of the length of the central section (1).
- the end sections (2) are usually less long than the intermediate sections.
- the deformations are preferably in a common plane. When using round wire as the starting material, the diameter is, for example, 0.4 to 1.0 mm.
- a device for the production of fibers according to FIGS. 1 and 2, which u. a. contains two embossing wheels (7, 8), as are shown schematically in part in FIG. 3.
- the two embossing wheels (7, 8) face each other like two spur gears, leaving a gap between their circumferential outer surfaces corresponding to the thickness of the strand material to be processed.
- the peripheral jacket surfaces (9, 10) are provided with successive projections (11) and depressions (12) according to the desired deformation of the intermediate sections of the finished fiber.
- the embossing wheels are the same over the entire circumference Division projections (11) and depressions (12) attached. Two successive pairs of projections (11) and depressions (12 or 11.1 and 12.1) each cause the desired deformation of a single fiber.
- the undeformed sections of the circumferential surface correspond to the central section (1) or the end sections (2) of a fiber.
- embossing stamps (14) For separating the completely formed fibers from the supplied strand material (13), embossing stamps (14) with a triangular profile in the plane of rotation at the same angular distance from one another are attached to the embossing wheel (7) and radially standing pressure stamps (15) with a flat surface on the embossing wheel (8). Embossing stamps (14) and pressure stamps (15) are set in their radial position so that when they face each other in the same radial plane they touch but do not exert any pressure on one another.
- FIG. 3 shows a position of the embossing wheels (7, 8), in which a finished fiber (16) is just being separated from the strand material (13) supplied. Any post-processing is not necessary. By shearing the fibers according to the invention in comparison with known methods, a considerable increase in productivity can be achieved.
- Wire preferably round wire, or flat strip can be used as the starting material.
Abstract
Description
Die Erfindung betrifft eine Faser zur Bewehrung von Beton oder dergleichen aus Draht oder Flachband, insbesondere aus Stahl gemäß dem Oberbegriff des Anspruchs 1. Weiter betrifft die Erfindung eine Einrichtung zum Herstellen solcher Fasern.The invention relates to a fiber for reinforcing concrete or the like made of wire or flat strip, in particular steel, according to the preamble of
Fasern dieser Art zum Beimischen in ein anfänglich weiches, später härtendes Material wie beispielsweise Beton sind in unterschiedlichen Ausführungen bekannt. Vielfach bestehen solche Fasern aus einem im wesentlichen gestreckten Drahtstück mit hakenartigen Verformungen an ihren beiden Enden, wobei die Enden abgewinkelt, gekröpft oder auch zu einem geschlossenen Kreis umgebogen sein können. Gefordert wird von solchen Fasern in erster Linie, daß ihre Formgebung keinen ungünstigen Einfluß auf die Mischbarkeit hat, daß aber dennoch ein gutes Bindungsverhalten im erhärteten Material erzielbar ist und daß sie kostengünstig herstellbar sind. Die weitgehende Erfüllung einer dieser Forderungen wie die Erzielung einer guten Bindung kann dazu führen, daß das Mischungsverhalten und auch die Herstellungskosten mehr oder weniger ungünstig beeinflußt werden.Fibers of this type for admixing in an initially soft, later hardening material such as concrete are known in various designs. Such fibers often consist of an essentially elongated piece of wire with hook-like deformations at its two ends, the ends being angled, cranked or also bent into a closed circle. The primary requirement of such fibers is that their shape does not have an unfavorable influence on the miscibility, but that a good binding behavior can nevertheless be achieved in the hardened material and that they can be produced inexpensively. The extensive fulfillment of one of these requirements, such as the achievement of a good bond, can lead to the mixing behavior and also the production costs being influenced more or less unfavorably.
Die Aufgabe der Erfindung besteht somit darin, eine hinsichtlich einer möglichst weitgehenden Erfüllung der drei vorgenannten Grundforderungen verbesserte Faser bereitzustellen. Eine weitere Erfindungsaufgabe ist die Schaffung einer geeigneten Einrichtung zum Herstellen solcher Fasern.The object of the invention is therefore to provide an improved fiber with regard to the greatest possible fulfillment of the three aforementioned basic requirements. Another task of the invention is Creation of a suitable facility for producing such fibers.
Zur Lösung der ersten Teilaufgabe sieht die Erfindung eine Faser zur Bewehrung von Beton oder dergleichen aus Draht oder Flachband, insbesondere aus Stahl vor, bei der sich an einen geraden Mittenabschnitt an seinen Enden je ein kürzerer, gewellter Zwischenabschnitt als Übergang zum jeweiligen Endabschnitt anschließt.To solve the first subtask, the invention provides a fiber for reinforcing concrete or the like made of wire or flat ribbon, in particular steel, in which a shorter, corrugated intermediate section adjoins a straight central section at its ends as a transition to the respective end section.
Vorteilhafte Weiterbildungen sind in den Unteransprüchen beschrieben.Advantageous further developments are described in the subclaims.
Nach einer ersten Weiterbildung ist jeder gewellte Zwischenabschnitt als Doppelwelle entsprechend einer gestreckten S-Form ausgebildet. Dabei werden vor allem aus Gründen einer vereinfachten Herstellung die Wellen der Zwischenabschnitte so angeordnet, daß sie in derselben Ebene verlaufen.According to a first further development, each corrugated intermediate section is designed as a double shaft in accordance with an elongated S shape. The shafts of the intermediate sections are arranged so that they run in the same plane, mainly for reasons of simplified production.
Die Endabschnitte sind zweckmäßigerweise als gerade Abschnitte ausgebildet und verlaufen etwa parallel versetzt zum geraden Mittenabschnitt.The end sections are expediently designed as straight sections and run approximately parallel to the straight central section.
Nach einer anderen zweckmäßigen Weiterbildung ist vorgesehen, daß die Endabschnitte an ihrem freien Ende eine durch Stauchung bewirkte Keilform haben und daß das äußerste Ende des keilförmigen Abschnitts breiter ist als das Faserprofil.According to another expedient development, it is provided that the end sections have a wedge shape caused by compression at their free end and that the outermost end of the wedge-shaped section is wider than the fiber profile.
Ein wesentlicher Vorteil der neuen Faser ist darin zu sehen, daß die an den geraden Mittenabschnitt sich anschließenden verformten Abschnitte im Bereich der Verformungen sanfte und keine scharfkantigen Übergänge aufweisen, wodurch die Mischbarkeit günstig beeinflußt wird. Weiter sind alle Verformungen so gestaltet, daß Fasern in einem einzigen Arbeitsgang als fertiges Erzeugnis herstellbar sind; dies führt zu einer erheblichen Verringerung der Herstellungskosten.A major advantage of the new fiber is the fact that the deformed sections adjoining the straight central section have smooth and no sharp-edged transitions in the area of the deformations have, whereby the miscibility is influenced favorably. Furthermore, all deformations are designed so that fibers can be produced as a finished product in a single operation; this leads to a considerable reduction in manufacturing costs.
Zur Lösung der zweiten Teilaufgabe ist eine Einrichtung zum Herstellen von Fasern vorgesehen, die zwei gegenläufig, synchron rotierende Prägeräder aufweist, die mit ihren Stirnflächen mit einem Spalt entsprechend der Stärke der Faser einander gegenüberstehen und an ihren Umfangsmantelflächen ineinander greifende zahnartige Vorsprünge und Vertiefungen aufweisen, und bei denen auf dem gesamten Umfang mit gleichem Winkelabstand voneinander an einem der beiden Prägeräder radial stehende Prägestempel mit Dreiecksprofil in der Rotationsebene und an dem anderen Prägerad korrespondierende Andruckstempel mit ebener Oberfläche befestigt sind. Der Bogenabstand zwischen zwei aufeinanderfolgenden Stempelpaaren ist dabei so gewählt, daß er der gewünschten Länge einer fertigen Faser entspricht.To solve the second subtask, a device for producing fibers is provided which has two counter-rotating, synchronously rotating embossing wheels, which face each other with a gap corresponding to the thickness of the fiber with their end faces and which have tooth-like projections and depressions which engage with one another on their peripheral jacket surfaces, and in which on the entire circumference with the same angular distance from each other radially standing stamping dies with a triangular profile in the plane of rotation and corresponding pressing stamps with a flat surface are attached to the other stamping wheel. The arc distance between two successive pairs of punches is chosen so that it corresponds to the desired length of a finished fiber.
Gemäß einer weiteren vorteilhaften Ausgestaltung der Einrichtung sind Prägestempel und zugehörige Andruckstempel radial so eingestellt, daß sie sich, wenn sie einander gegenüberstehen, ohne Andruck berühren. Zweckmäßigerweise werden Präge- und Andruckstempel an den beiden Prägerädern auswechselbar befestigt.According to a further advantageous embodiment of the device, the embossing stamp and associated pressure stamp are set radially so that when they face each other they touch without pressure. Embossing and pressure stamps are expediently attached to the two embossing wheels in an exchangeable manner.
Ausgangsmaterial für das Herstellen von Fasern der vorstehend beschriebenen Art ist Draht oder Flachband, welches als Endlosmaterial den beiden Prägerädern zugeführt wird. Das Endlosmaterial wird wie bei einer Doppelwalze durch die gegenläufige Drehung der beiden Prägeräder kontinuierlich durch den Spalt zwischen den Umfangsmantelflächen der beiden Prägeräder hindurchgezogen und dabei aufgrund der zahnartigen Vorsprünge und Vertiefungen an den Prägerändern in gewünschter Weise verformt, wobei ferner durch die Einwirkung von Prägestempel und zugehörigem Andruckstempel durch einen Stauch- und Trennvorgang die fertigen Fasern vom zugeführten Strangmaterial abgetrennt werden.The starting material for the production of fibers of the type described above is wire or flat ribbon, which is the continuous material of the two embossing wheels is fed. As with a double roller, the continuous material is continuously drawn through the gap between the circumferential surfaces of the two embossing wheels by the counter-rotation of the two embossing wheels and is deformed in the desired manner due to the tooth-like projections and depressions on the embossing edges, furthermore by the action of the embossing die and associated The finished fibers are separated from the supplied strand material by a pressure stamp by means of a compression and separation process.
Bei diesem Trennvorgang entsteht am äußersten Ende der beiden einander gegenüberstehenden späteren Endabschnitte einerseits eine keilförmige, zum Stirnende verlaufende Abflachung und andererseits eine durch Materialverdrängung hervorgerufene Verbreiterung mit einem etwa schwalbenschwanzartigen Profil. Dank dieser gegenüber dem eigentlichen Faserprofil breiteren äußersten Enden ist eine zusätzliche Verbesserung der Haftung der Fasern im erhärteten Material erzielbar.In this separation process, a wedge-shaped flattening that runs to the front end and, on the other hand, a widening caused by material displacement with an approximately dovetail-like profile are created at the outermost end of the two opposite end sections. Thanks to these outermost ends, which are wider than the actual fiber profile, an additional improvement in the adhesion of the fibers in the hardened material can be achieved.
Bei Verwendung von Flachband als Ausgangsmaterial wird zweckmäßigerweise die kleinere Stärke des Rechteckprofils verformt.When using flat strip as the starting material, the smaller thickness of the rectangular profile is expediently deformed.
Nachfolgend wird die Erfindung anhand von in der Zeichnung schematisch dargestellten Ausführungsbeispielen näher erläutert. Es zeigt:
- Fig. 1
- eine Seitenansicht einer Faser aus Draht, wobei die Ebene der Verformungen mit der Zeichenebene zusammenfällt,
- Fig. 2
- eine Seitenansicht eines freien Endes der Faser in einer gegenüber Fig. 1 um 90° gedrehten Blickrichtung in vergrößerter Darstellung und
- Fig. 3
- eine Seitenansicht als Ausschnitt von zwei mit ihren Stirnseiten einander gegenüberstehenden Prägerädern zum Herstellen von Fasern.
- Fig. 1
- 2 shows a side view of a fiber made of wire, the plane of the deformations coinciding with the plane of the drawing,
- Fig. 2
- a side view of a free end of the fiber in a direction rotated by Fig. 1 by 90 ° in an enlarged view and
- Fig. 3
- a side view as a section of two with their end faces opposite embossing wheels for the production of fibers.
In der Zeichnung ist die fertige Faser in Fig. 1 der besseren Übersicht wegen vergrößert dargestellt. In Wirklichkeit haben Fasern dieser Art in der Regel eine Gesamtlänge von ca. 6 cm, wobei auch größere Längen möglich sind.In the drawing, the finished fiber in Fig. 1 is shown enlarged for clarity. In reality, fibers of this type generally have a total length of approximately 6 cm, although longer lengths are also possible.
Die Faser setzt sich zusammen aus einem gradlinigen Mittenabschnitt (1) und kürzeren, ebenfalls gradlinigen, etwa parallel zum Mittenabschnitt (1) verlaufenden Endabschnitten (2). An jedes Ende des Mittenabschnitts (1) schließt sich ein gewellter bzw. gekröpfter Zwischenabschnitt (3) als Übergang zum jeweiligen Endabschnitt (2) an. Bei dem dargestellten Ausführungsbeispiel hat der Zwischenabschnitt (3) eine gestreckte S-Form mit einem Wellenberg und einem Wellental, wobei der dem Endabschnitt (2) benachbarte Schenkel (4) des Zwischenabschnitts (3) länger ausgebildet ist als der an den Mittenabschnitt (1) anschließende Schenkel (5). Die jeweils gewählte Länge des Schenkels (4) bestimmt das Maß der parallelen Seitenverschiebung der Endabschnitte (2) gegenüber dem Mittenabschnitt (1). Alle Knickstellen der Verformung der Faser sind weich geschwungen ausgebildet, um scharfe Kanten zu vermeiden.The fiber is composed of a rectilinear central section (1) and shorter, likewise rectilinear end sections (2) which run approximately parallel to the central section (1). A corrugated or cranked intermediate section (3) adjoins each end of the central section (1) as a transition to the respective end section (2). In the illustrated embodiment, the intermediate section (3) has an elongated S-shape with a wave crest and a wave trough, the leg (4) of the intermediate section (3) adjacent to the end section (2) being longer than that of the central section (1) adjoining leg (5). The length of the leg (4) selected in each case determines the degree of parallel lateral displacement of the end sections (2) with respect to the center section (1). All kinks in the deformation of the fiber are softly curved to avoid sharp edges.
Das äußerste Ende der beiden Endabschnitte (2) hat ein etwa schwalbenschwanzartiges Profil (6), wie es aus Fig. 2 zu ersehen ist. Dabei ist das schwalbenschwanzartige Endstück keilförmig zum freien Ende abgeflacht. Diese Formgebung entsteht bei der Herstellung der Fasern, auf die nachfolgend noch eingegangen wird.The outermost end of the two end sections (2) has an approximately dovetail-like profile (6), as can be seen in FIG. 2. The dovetail-like end piece is flattened in a wedge shape towards the free end. This shape is created during the production of the fibers, which will be discussed below.
Die Längenverhältnisse der einzelnen Abschnitte der Faser und ebenso die Winkel der Abkröpfungen können varieren. Zweckmäßig ist es jedoch, die Länge eines Zwischenabschnitts (3) 30 % oder weniger der Länge des Mittenabschnitts (1) zu wählen. Die Endabschnitte (2) sind in der Regel weniger lang als die Zwischenabschnitte. Die Verformungen liegen vorzugsweise in einer gemeinsamen Ebene. Bei Verwendung von Runddraht als Ausgangsmaterial beträgt der Durchmesser beispielsweise 0,4 bis 1,0 mm.The length ratios of the individual sections of the fiber and also the angles of the offsets can vary. However, it is expedient to choose the length of an intermediate section (3) 30% or less of the length of the central section (1). The end sections (2) are usually less long than the intermediate sections. The deformations are preferably in a common plane. When using round wire as the starting material, the diameter is, for example, 0.4 to 1.0 mm.
Für das Herstellen von Fasern gemäß den Fig. 1 und 2 wird eine Einrichtung benutzt, die u. a. zwei Prägeräder (7, 8) enthält, wie sie in Fig. 3 auszugsweise schematisch dargestellt sind.For the production of fibers according to FIGS. 1 and 2, a device is used which u. a. contains two embossing wheels (7, 8), as are shown schematically in part in FIG. 3.
Die beiden Prägeräder (7, 8) stehen wie zwei Stirnzahnräder einander gegenüber, wobei zwischen ihren Umfangsmantelflächen ein Spalt entsprechend der Stärke des zu verarbeitenden Strangmaterials freigelassen ist. Die Umfangsmantelflächen (9, 10) sind mit aufeinanderfolgenden Vorsprüngen (11) und Vertiefungen (12) entsprechend der gewünschten Verformung der Zwischenabschnitte der fertigen Faser versehen. Je nach der gewünschten Länge einer fertigen Faser sind über den gesamten Umfang der Prägeräder mit gleichbleibender Teilung Vorsprünge (11) und Vertiefungen (12) angebracht. Dabei bewirken jeweils zwei aufeinanderfolgende Paare von Vorsprüngen (11) und Vertiefungen (12 bzw. 11.1 und 12.1) die gewünschte Verformung einer einzelnen Faser. Die nicht verformten Abschnitte der Umfangsmantelfläche entsprechen dem Mittenabschnitt (1) bzw. den Endabschnitten (2) einer Faser.The two embossing wheels (7, 8) face each other like two spur gears, leaving a gap between their circumferential outer surfaces corresponding to the thickness of the strand material to be processed. The peripheral jacket surfaces (9, 10) are provided with successive projections (11) and depressions (12) according to the desired deformation of the intermediate sections of the finished fiber. Depending on the desired length of a finished fiber, the embossing wheels are the same over the entire circumference Division projections (11) and depressions (12) attached. Two successive pairs of projections (11) and depressions (12 or 11.1 and 12.1) each cause the desired deformation of a single fiber. The undeformed sections of the circumferential surface correspond to the central section (1) or the end sections (2) of a fiber.
Für das Abtrennen der fertig geformten Fasern vom zugeführten Strangmaterial (13) sind am Prägerad (7) Prägestempel (14) mit Dreiecksprofil in der Rotationsebene mit gleichem Winkelabstand voneinander und am Prägerad (8) Andruckstempel (15) mit ebener Oberfläche radial stehend befestigt. Prägestempel (14) und Andruckstempel (15) sind in ihrer Radialstellung so eingestellt, daß sie sich, wenn sie einander in derselben Radialebene gegenüberstehen, zwar berühren, aber keinen Druck aufeinander ausüben.For separating the completely formed fibers from the supplied strand material (13), embossing stamps (14) with a triangular profile in the plane of rotation at the same angular distance from one another are attached to the embossing wheel (7) and radially standing pressure stamps (15) with a flat surface on the embossing wheel (8). Embossing stamps (14) and pressure stamps (15) are set in their radial position so that when they face each other in the same radial plane they touch but do not exert any pressure on one another.
Die Darstellung in Fig. 3 zeigt eine Stellung der Prägeräder (7, 8), bei der eine fertige Faser (16) vom zugeführten Strangmaterial (13) gerade abgetrennt wird. Irgendwelche Nachbearbeitungen sind nicht erforderlich. Durch das erfindungsgemäße Abscheren der Fasern im Vergleich zu bekannten Verfahren ist eine erhebliche Steigerung der Produktivität erzielbar.The illustration in FIG. 3 shows a position of the embossing wheels (7, 8), in which a finished fiber (16) is just being separated from the strand material (13) supplied. Any post-processing is not necessary. By shearing the fibers according to the invention in comparison with known methods, a considerable increase in productivity can be achieved.
Als Ausgangsmaterial kann Draht, vorzugsweise Runddraht, oder Flachband verwendet werden.Wire, preferably round wire, or flat strip can be used as the starting material.
Claims (9)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4226744 | 1992-08-13 | ||
| DE4226744A DE4226744A1 (en) | 1992-08-13 | 1992-08-13 | Fiber for reinforcing concrete or the like from wire or flat ribbon and device for producing such fibers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0582905A2 true EP0582905A2 (en) | 1994-02-16 |
| EP0582905A3 EP0582905A3 (en) | 1994-06-01 |
Family
ID=6465430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19930112124 Withdrawn EP0582905A3 (en) | 1992-08-13 | 1993-07-29 | Fibre of wire or steel hoop for the reinforcement of concrete or the like and device for the manufacturing of such fibres |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5359873A (en) |
| EP (1) | EP0582905A3 (en) |
| JP (1) | JPH06192927A (en) |
| CN (1) | CN1082955A (en) |
| CA (1) | CA2101479A1 (en) |
| DE (1) | DE4226744A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997011239A1 (en) * | 1995-09-19 | 1997-03-27 | N.V. Bekaert S.A. | Steel wire element for mixing into subsequently hardening materials |
| EP1790792A2 (en) * | 2005-11-28 | 2007-05-30 | Fili & Forme S.r.l. | Building artefact |
| WO2012080326A3 (en) * | 2010-12-15 | 2012-11-15 | Nv Bekaert Sa | Steel fibre for reinforcing concrete or mortar having an anchorage end with at least two bent sections |
| GB2491339A (en) * | 2011-04-15 | 2012-12-05 | Stephen Bell | Punching shear reinforcement structure for pre cast concrete planks |
| US8871020B2 (en) | 2009-06-12 | 2014-10-28 | Nv Bekaert Sa | High elongation fibres |
| US9045901B2 (en) | 2009-06-12 | 2015-06-02 | Nv Bekaert Sa | High elongation fibre with good anchorage |
| US9435122B2 (en) | 2010-12-15 | 2016-09-06 | Nv Bekaert Sa | Steel fibre for reinforcing concrete or mortar having an anchorage end with at least three straight sections |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5599599A (en) * | 1995-07-06 | 1997-02-04 | University Of Central Florida | Fiber reinforced plastic ("FRP")-concrete composite structural members |
| US6123485A (en) * | 1998-02-03 | 2000-09-26 | University Of Central Florida | Pre-stressed FRP-concrete composite structural members |
| NL1016105C2 (en) | 2000-09-05 | 2002-03-07 | Harex Nederland B V | Fiber mixture for concrete. |
| ITUD20050030A1 (en) * | 2005-02-25 | 2006-08-26 | Aimc Srl | MACHINE FOR THE PRODUCTION OF METAL FIBER AND ITS PRODUCTION PROCEDURE |
| JP5726072B2 (en) | 2008-06-20 | 2015-05-27 | ジボダン エス エー | Enzymatic process |
| CN101574170B (en) * | 2009-06-05 | 2012-06-06 | 开平鸿汉服装配件有限公司 | Brassiere steel ring and method and device for producing same |
| JP5360903B2 (en) * | 2009-11-25 | 2013-12-04 | トリニティ工業株式会社 | Rocker molding coating jig and pipe forming equipment |
| NO333023B1 (en) * | 2010-03-03 | 2013-02-18 | Reforcetech Ltd | Reinforcement system and method for building concrete structures. |
| US8790777B2 (en) * | 2012-04-19 | 2014-07-29 | The Boeing Company | Composite articles having fibers with longitudinally-varying geometry |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2043055A1 (en) * | 1970-08-31 | 1972-03-02 | Method of making a steel fiber concrete mass for concrete structures any | |
| US3900667A (en) * | 1969-09-12 | 1975-08-19 | Bekaert Sa Nv | Reinforcing wire element and materials reinforced therewith |
| GB1446855A (en) * | 1972-08-16 | 1976-08-18 | Gkn Somerset Wire Ltd | Metal reinforcing elements |
| EP0098825A1 (en) * | 1982-07-01 | 1984-01-18 | Eurosteel S.A. | Fibres for the reinforcement of mouldable materials with a hydraulic or other bonding agent, and their manufacture |
| DE3435850A1 (en) * | 1984-09-29 | 1986-04-17 | Alwin Dipl.-Ing. 7560 Gaggenau Merz | Fibre-reinforced concrete |
| DE9000846U1 (en) * | 1990-01-26 | 1991-06-27 | Astrid K. Schulz Gmbh & Co Handelsgesellschaft Kg, 7129 Ilsfeld, De | |
| EP0475917A1 (en) * | 1990-09-12 | 1992-03-18 | OFFICINE MACCAFERRI S.p.A. | A metal fibre for reinforcing concrete |
| DE9210824U1 (en) * | 1992-08-13 | 1992-10-29 | Vulkan-Harex Stahlfasertechnik Gmbh & Co. Kg, 4690 Herne, De |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US99221A (en) * | 1870-01-25 | Improved rolling-mill | ||
| US1365258A (en) * | 1920-04-03 | 1921-01-11 | Standard Crayon Mfg Company | Corrugating-machine |
| FR92860E (en) * | 1960-09-15 | 1969-01-10 | Teszner Stanislas | Improvements to semiconductor devices known as negative resistance tecnetrons and their manufacturing processes. |
| US3942955A (en) * | 1969-09-12 | 1976-03-09 | N. V. Bekaert S. A. | Reinforcing wire element |
| DE2018396A1 (en) * | 1970-04-17 | 1971-10-28 | Lävemann, Kurt, 2400 Lübeck | Concrete reinforcing rod bending machine |
| AU3433478A (en) * | 1977-03-22 | 1979-09-27 | Rocla Concrete Pipes Limited A | Reinforcement fibres |
| US4608845A (en) * | 1984-05-29 | 1986-09-02 | Thomas P. Mahoney | Apparatus for fabricating honeycomb core strip |
| DE3512115A1 (en) * | 1985-04-03 | 1986-10-16 | Gerhard 6114 Groß-Umstadt Glaser | Method and apparatus for the cold shaping of metal rods by bending |
| DE9103713U1 (en) * | 1991-03-26 | 1991-05-29 | Wott Stahlfaser Fuer Beton-Technik, 5970 Plettenberg, De |
-
1992
- 1992-08-13 DE DE4226744A patent/DE4226744A1/en not_active Ceased
-
1993
- 1993-07-23 JP JP5224899A patent/JPH06192927A/en active Pending
- 1993-07-28 CA CA002101479A patent/CA2101479A1/en not_active Abandoned
- 1993-07-29 EP EP19930112124 patent/EP0582905A3/en not_active Withdrawn
- 1993-08-13 CN CN93109673.1A patent/CN1082955A/en active Pending
- 1993-08-13 US US08/106,382 patent/US5359873A/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3900667A (en) * | 1969-09-12 | 1975-08-19 | Bekaert Sa Nv | Reinforcing wire element and materials reinforced therewith |
| DE2043055A1 (en) * | 1970-08-31 | 1972-03-02 | Method of making a steel fiber concrete mass for concrete structures any | |
| GB1446855A (en) * | 1972-08-16 | 1976-08-18 | Gkn Somerset Wire Ltd | Metal reinforcing elements |
| EP0098825A1 (en) * | 1982-07-01 | 1984-01-18 | Eurosteel S.A. | Fibres for the reinforcement of mouldable materials with a hydraulic or other bonding agent, and their manufacture |
| DE3435850A1 (en) * | 1984-09-29 | 1986-04-17 | Alwin Dipl.-Ing. 7560 Gaggenau Merz | Fibre-reinforced concrete |
| DE9000846U1 (en) * | 1990-01-26 | 1991-06-27 | Astrid K. Schulz Gmbh & Co Handelsgesellschaft Kg, 7129 Ilsfeld, De | |
| EP0475917A1 (en) * | 1990-09-12 | 1992-03-18 | OFFICINE MACCAFERRI S.p.A. | A metal fibre for reinforcing concrete |
| DE9210824U1 (en) * | 1992-08-13 | 1992-10-29 | Vulkan-Harex Stahlfasertechnik Gmbh & Co. Kg, 4690 Herne, De |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997011239A1 (en) * | 1995-09-19 | 1997-03-27 | N.V. Bekaert S.A. | Steel wire element for mixing into subsequently hardening materials |
| BE1009638A3 (en) * | 1995-09-19 | 1997-06-03 | Bekaert Sa Nv | STEEL WIRE ELEMENT FOR MIXING IN POST-CURING MATERIALS. |
| US6045910A (en) * | 1995-09-19 | 2000-04-04 | N. V. Bekaert S. A. | Steel wire element for mixing into subsequently hardening materials |
| EP1790792A2 (en) * | 2005-11-28 | 2007-05-30 | Fili & Forme S.r.l. | Building artefact |
| EP1790792A3 (en) * | 2005-11-28 | 2007-10-24 | Fili & Forme S.r.l. | Building artefact |
| US9045901B2 (en) | 2009-06-12 | 2015-06-02 | Nv Bekaert Sa | High elongation fibre with good anchorage |
| US8871020B2 (en) | 2009-06-12 | 2014-10-28 | Nv Bekaert Sa | High elongation fibres |
| US8962150B2 (en) | 2010-12-15 | 2015-02-24 | Nv Bekaert Sa | Steel fibre for reinforcing concrete or mortar having an anchorage end with at least two bent sections |
| WO2012080326A3 (en) * | 2010-12-15 | 2012-11-15 | Nv Bekaert Sa | Steel fibre for reinforcing concrete or mortar having an anchorage end with at least two bent sections |
| AU2011343412B2 (en) * | 2010-12-15 | 2016-04-14 | Nv Bekaert Sa | Steel fibre for reinforcing concrete or mortar having an anchorage end with at least two bent sections |
| US9435122B2 (en) | 2010-12-15 | 2016-09-06 | Nv Bekaert Sa | Steel fibre for reinforcing concrete or mortar having an anchorage end with at least three straight sections |
| EA025712B1 (en) * | 2010-12-15 | 2017-01-30 | Нв Бекаэрт Са | Steel fibre for reinforcing concrete or mortar having an anchorage end with at least two bent sections |
| GB2491339A (en) * | 2011-04-15 | 2012-12-05 | Stephen Bell | Punching shear reinforcement structure for pre cast concrete planks |
Also Published As
| Publication number | Publication date |
|---|---|
| US5359873A (en) | 1994-11-01 |
| DE4226744A1 (en) | 1994-02-17 |
| EP0582905A3 (en) | 1994-06-01 |
| CA2101479A1 (en) | 1994-02-14 |
| JPH06192927A (en) | 1994-07-12 |
| CN1082955A (en) | 1994-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0582905A2 (en) | Fibre of wire or steel hoop for the reinforcement of concrete or the like and device for the manufacturing of such fibres | |
| DE2265310C3 (en) | Stator core for rotating electrical machines | |
| EP2210003B1 (en) | Method for producing a threaded insert with an internal and external thread, and threaded insert | |
| EP0314935B1 (en) | Hot rolling of rods having helicoidal ribs | |
| DE3611134C2 (en) | ||
| DE3006526A1 (en) | METHOD AND DEVICE FOR PRODUCING ELEMENTS WITH A PROFILED CROSS-SECTION FROM SHEET | |
| EP0559951A1 (en) | Process and cutting tool for the production of fibres out of steel plates | |
| EP0233172B1 (en) | Stainless steel plate and sheet roll-device | |
| DE3307767A1 (en) | Method and apparatus for the production of steel strips | |
| DE1813627B2 (en) | Hot-rolled concrete reinforcing or anchoring bar - is in parts forming rounded whole with threaded ribbing on outside | |
| DE3022085A1 (en) | CONCRETE REINFORCING BAR, ESPECIALLY ANCHOR BAR, AND METHOD FOR THE PRODUCTION THEREOF | |
| WO1986003437A1 (en) | Press device for producing a steering rack | |
| DE2228496A1 (en) | METHOD AND DEVICE FOR MANUFACTURING A CORRUGATED THIN SHEET METAL | |
| DE2052022C3 (en) | Process for the production of a closed shaped wire layer for wire ropes, cables and similar products | |
| DE2532404C3 (en) | Process for the production of cutting teeth intended for a saw chain | |
| DE3409151C1 (en) | Method and apparatus for the production of self-supporting constructional elements and the use of the same for covering annular-segment-shaped surfaces | |
| DE2305620C2 (en) | Apparatus and method for manufacturing arch-shaped building panels | |
| DE102006040519B4 (en) | Method for producing a busbar | |
| DE2845903C3 (en) | Flexible worm for a worm gear | |
| DE2123818A1 (en) | RIBBED CONCRETE REINFORCEMENT BAR AND DEVICE FOR ITS PRODUCTION | |
| DE6941163U (en) | DISC SPRING AND DEVICE FOR THEIR PRODUCTION | |
| DE4218450A1 (en) | Reinforcing fibres of steel wire for mixing with concrete - have flat middle section profile, with largest width exceeding diameter of round end sections | |
| DE2337313C3 (en) | Method and device for hot rolling metallic, profiled bars with four elevations which are periodically arranged in rows in four rows offset by 90 ° | |
| DE2160470A1 (en) | Ribbed concrete rebar | |
| CH401121A (en) | Road guardrail and method of making it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT CH DE ES FR IT LI |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT CH DE ES FR IT LI |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19941202 |