US20100129678A1 - Method of making strip formed by web-connected wires - Google Patents

Method of making strip formed by web-connected wires Download PDF

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Publication number
US20100129678A1
US20100129678A1 US12/598,000 US59800008A US2010129678A1 US 20100129678 A1 US20100129678 A1 US 20100129678A1 US 59800008 A US59800008 A US 59800008A US 2010129678 A1 US2010129678 A1 US 2010129678A1
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US
United States
Prior art keywords
strip
webs
wires
metal
web
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.)
Abandoned
Application number
US12/598,000
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English (en)
Inventor
Karl-Hermann Stahl
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Individual
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Individual
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Publication of US20100129678A1 publication Critical patent/US20100129678A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • B21F45/16—Wire-working in the manufacture of other particular articles of devices for fastening or securing purposes
    • B21F45/24—Wire-working in the manufacture of other particular articles of devices for fastening or securing purposes of staples; of belt-fastening elements
    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/08—Bending by altering the thickness of part of the cross-section of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H8/00—Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects, e.g. checkered sheets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B15/00—Nails; Staples
    • F16B15/0015—Staples
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B15/00—Nails; Staples
    • F16B15/08—Nails; Staples formed in integral series but easily separable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12188—All metal or with adjacent metals having marginal feature for indexing or weakened portion for severing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12188—All metal or with adjacent metals having marginal feature for indexing or weakened portion for severing
    • Y10T428/12194—For severing perpendicular to longitudinal dimension

Definitions

  • the invention relates to a method of making a strip formed by a plurality of parallel wires, wherein a sheet-metal strip is first grooved on one or both sides to form wires interconnected by webs.
  • the invention further relates to a metal strip made according to the method.
  • DE 287820 describes a method whereby prefabricated wires are glued, soldered, or welded together at points such that strips of metal are created comprised of the desired amount of wires that may subsequently be separated from each other.
  • the object of the invention is to provide a manufacturing method enabling the production of strips of the type described above, requiring no additional connection techniques, but that still comprise wires that are as burr-free as possible after the subsequent separation thereof according to the requirements of the final product.
  • the object is attained according to the invention in that for the making the webs that are thin and easily separated and that, when separated, have smooth and burr-free edge faces, the strip is subjected to a bending process during which each web is subjected to a multiple bends along its longitudinal axis in such a way that incipient cracks form due to fatigue fracture at the webs, and thereby a separation web is created.
  • the advantage achieved by the invention is substantially that edge faces are formed that are largely smooth and burr-free, utilizing the metallurgical effect of fatigue fracture, without causing a complete separation of the wires formed in this manner.
  • the separation may be carried out later—such as in a stapler, or before further processing requiring a complete separation of the wires from each other—without any great expenditure of energy, the desired burr-free and smooth separation surface then becoming visible.
  • the method has the particular advantage that the retrospective processing of the edge faces, as is common in other methods of production, i.e. trimming or stamping, is not necessary in this case.
  • the minimum depth of the grooves should be selected such that cracks due to fatigue fracture are caused at the groove base by the bending process.
  • the thickness of the web remaining after groove formation may particularly be within the range of between 20% and 95% of the thickness of the strip, the thickness of the webs thus being substantially determined by the ductility of the material.
  • the bending process comprises one-sided, multiple bends up to fatigue fracture at the webs with regard to the plane of the strip.
  • the bending process may also comprise double-sided, multiple bends up to fatigue faction at the webs with regard to the plane of the strip.
  • the bending process may be carried out such that the multiple bends of the web are at about the same angles. Depending on the case of application and structure of the material, however, it may also be advantageous instead, if the multiple bends of the webs are at increasing or decreasing angles.
  • the multiple bends of the webs should advantageously be at an angle that is smaller than the groove angle.
  • the separation web may be split by a slight deflection transversely of the web of adjacent strips immediately adjacent each other.
  • markings may be applied to the strip corresponding to the total length of the final product, and which may be queried during processing of the strip.
  • the article of manufacture that is the object of the invention, a metal strip formed of a plurality of parallel wires connected to each other via webs, is attained by a strip-shaped semifinished product used as starting material that is grooved on one or on both sides for forming the wires, the webs being made thin a, easily separated and, when separated, smooth and burr-free edge faces having fatigue fracture and formed by multiple bends via a bending process.
  • Incipient cracks by fatigue fracture are created on the web bases via the bending process so that the webs are weakened.
  • the edge faces created by fatigue fraction are relatively smooth and free of burrs.
  • the remainder of the webs can be very thin because they are positioned at the neutral phase of the bending process; the wires can therefore be easily separated from each other.
  • Such a wire has the advantage of forming smooth and burr-free edge faces during the separation of individual wires via the existing fatigue fraction, while simultaneously the forces required for the separation remain within reasonable limits of the application.
  • a recommended metal within the scope of the invention is basically stainless steel, iron, copper, or aluminum.
  • the metal may also be a coated metal strip, particularly galvanized or copper-plated iron strip.
  • the metal may also be a material to which high strength was imparted by rolling.
  • the opening angle of the grooves in the strip is advantageously between 30° and 120°.
  • the thickness of the webs is advantageously within the range of between 20% and 95% of the thickness of the strip and is determined by the properties of the metal, particularly its ductility.
  • the webs have incipient cracks due to fatigue fracture transverse to the grooved strip on the highly reinforced groove base in the surface area by the bending process, producing a smooth surface and further reducing the formation of burrs during the subsequent separation process.
  • the separation webs also have locally occurring perforations in longitudinal direction.
  • top and bottom sides of the wires are coated with a relatively uniform layer thickness but the narrow sides of the wires at the groove flanks have a decreasing layer thickness toward the fracture zone due to the groove, and the fracture zones themselves are not coated.
  • the wires will all have the same widths across the strip; however, within the scope of the invention it is also possible that the wires have different widths across the strip.
  • the substantially rectangular shape of the wires initially predetermined by the starting material is changed outside of the groove area according to the intended use.
  • FIG. 1 is a cross section through a partially illustrated starting material provided for the manufacture of the strip with already carried out groove formation
  • FIG. 2 shows the starting material for making the strip being subjected to a rolling process inducing bending strain
  • FIG. 3 a setup for the partial separation of the webs of the strip
  • FIG. 4 is a side view of the strip according to FIG. 3 .
  • FIG. 5 is a section through a detail of the strip at a groove
  • FIG. 6 shows sections through the strip at a groove with a strip bent into a U-shape for use as a staple for various illustrated embodiments
  • FIG. 7 is a cross-section through an individual coated wire.
  • the arrangement illustrated in the drawing serves for making a strip 1 formed by a plurality of parallel wires 2 .
  • a sheet-metal strip is first grooved either on one or both sides to form the wires 2 in a manner not illustrated in detail in the drawing, the thus produced wires 2 being interconnected by webs 3 as shown in FIG. 1 .
  • the strip is subjected to a bending process according to FIG. 2 , during which each web is subjected to a multiple bends along its longitudinal axis by upper rollers 5 and lower rollers 6 .
  • a bending process according to FIG. 2 , during which each web is subjected to a multiple bends along its longitudinal axis by upper rollers 5 and lower rollers 6 .
  • incipient cracks are formed due to fatigue fracture at the webs 3 , thereby creating a separation web that can be easily pulled apart later.
  • groove formation is preferably carried out as a V-shaped grooves 4 , wherein the groove angle W may be between 30° and 120°.
  • a groove angle W of about 60° is preferred.
  • the thickness of the webs 3 may be within the range of about 20% to 95% of the thickness of the strip 1 , dependent in particular on the ductility of the material.
  • the groove depth is selected such that the deformation capacity of the material is nearly exhausted at the webs 3 .
  • the bending process comprises multiple bends either on one side or also on both sides with regard to the plane of the strip 1 , as indicated in FIG. 2 .
  • a plurality of roller arrangements comprising one upper roller 5 and one lower roller 6 each, are temporarily successively arranged in the running direction of the strip 1 .
  • the multiple bends of the webs 3 through a bending angle B may be carried out at the same angles; however it is also possible that the multiple bends of the webs 3 are carried out by increasing or decreasing angles.
  • the determination should be made according to the properties of the strip material used. Typically, for this purpose the multiple bends of the webs 3 will occur at an angle that is smaller than the groove angle W.
  • a strip-shaped semifinished product made from metal is used as the starting material, for which a metal mainly comprising stainless steel, iron, copper, or aluminum is particularly suited. It is also possible to use coated metal strips, particularly galvanized or copper-plated iron strips. It has been proven particularly advantageous, if a metal is used whose strength has been increased by rolling.
  • the separation webs 3 may have longitudinally spaced short perforations 7 .
  • a roller device according to FIGS. 3 and 4 may be provided in the separation webs are locally ruptured by only a light deflection of adjacent wires 2 in opposite directions.
  • the position of the separation zones and remaining separation webs 9 may be adjusted to requirements as exist, for example, in a staple wire. This is obvious in detail in FIG. 4 .
  • FIG. 5 shows a possible result of the treatment of a web 3 after a completed bending process and according to the local separation processes described above.
  • areas a are two partially fractured zones created by the bending process.
  • area c the remaining web has already been locally separated and, as indicated by the shading, the remaining separation webs 9 .
  • FIG. 6 shows examples of staple wires for which the formation of locally separated remaining webs and remaining webs may be suited.
  • the upper and lower sides of the wires 2 may be coated with a relatively uniform coating thickness 10 , while the narrow sides of the wires 2 may have a decreasing coating thickness at the grooves 4 toward the fracture zone, while the fracture zone itself is not coated. This is shown in the illustration of a single wire of FIG. 7 .
  • the arrangement may also be selected in a manner also not shown in the drawing such that the wires 2 in the strip 1 have different widths.
  • the wire thickness in the strip 1 will all be the same.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wire Processing (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Metal Rolling (AREA)
  • Decoration Of Textiles (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Ropes Or Cables (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
US12/598,000 2007-05-04 2008-02-08 Method of making strip formed by web-connected wires Abandoned US20100129678A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007020992.6 2007-05-04
DE102007020992 2007-05-04
PCT/DE2008/000224 WO2008135002A1 (de) 2007-05-04 2008-02-08 Verfahren zur herstellung eines von aus einer vielzahl von parallel zu einander angeordneten drahtadern bestehenden drahtbandes sowie nach diesem verfahren hergestelltes drahtband

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000224 A-371-Of-International WO2008135002A1 (de) 2007-05-04 2008-02-08 Verfahren zur herstellung eines von aus einer vielzahl von parallel zu einander angeordneten drahtadern bestehenden drahtbandes sowie nach diesem verfahren hergestelltes drahtband

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/581,214 Continuation US9511413B2 (en) 2007-05-04 2014-12-23 Method of making strip formed by web-connected wires

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US20100129678A1 true US20100129678A1 (en) 2010-05-27

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US12/598,000 Abandoned US20100129678A1 (en) 2007-05-04 2008-02-08 Method of making strip formed by web-connected wires
US14/581,214 Active US9511413B2 (en) 2007-05-04 2014-12-23 Method of making strip formed by web-connected wires

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US14/581,214 Active US9511413B2 (en) 2007-05-04 2014-12-23 Method of making strip formed by web-connected wires

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US (2) US20100129678A1 (el)
EP (1) EP2144721B1 (el)
JP (1) JP5221643B2 (el)
KR (1) KR101266575B1 (el)
CN (1) CN101715375B (el)
AT (1) ATE473818T1 (el)
AU (1) AU2008249135B2 (el)
BR (1) BRPI0811539B1 (el)
CA (1) CA2685998C (el)
CY (1) CY1110773T1 (el)
DE (1) DE502008000960D1 (el)
DK (1) DK2144721T3 (el)
ES (1) ES2348400T3 (el)
HK (1) HK1141756A1 (el)
HR (1) HRP20100527T1 (el)
MX (1) MX2009011535A (el)
PL (1) PL2144721T3 (el)
PT (1) PT2144721E (el)
RU (1) RU2454291C2 (el)
SI (1) SI2144721T1 (el)
UA (1) UA95358C2 (el)
WO (1) WO2008135002A1 (el)
ZA (1) ZA200907706B (el)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110212343A1 (en) * 2008-07-23 2011-09-01 Karl-Hermann Stahl Method for producing steel fibers
US9180602B2 (en) 2010-09-08 2015-11-10 Hacanoka Gmbh Method of and apparatus for making mesh-like metal mats

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009037558A1 (de) 2009-08-13 2011-02-17 Karl-Hermann Stahl Verfahren zur Vereinzelung von Drähten oder Bändern aus Drahtader- bzw. Bandaderbändern sowie Vorrichtung zur Durchführung des Verfahrens
DE102009037643A1 (de) * 2009-08-14 2011-02-17 Karl-Hermann Stahl Verfahren zum vieladrigen Entgraten von Drahtadern
DE102011112037A1 (de) 2011-08-31 2013-02-28 Hacanoka Gmbh Ankermetallstift
DE102011115434B3 (de) * 2011-10-08 2013-01-17 Hacanoka Gmbh Verfahren zur Fertigung von Draht und Drahtprodukten
US11033311B2 (en) 2012-01-12 2021-06-15 University Of Kansas Compact orthopedic anti-rotation device
RU171266U1 (ru) * 2015-10-29 2017-05-26 Иван Федорович Вострецов Устройство для роспуска ленточного проката на суперузкие, продольно профилированные, мерные по длине отрезки
DE102017009311A1 (de) * 2017-10-07 2019-04-11 Hacanoka Gmbh Verfahren zum Ausbreiten und Formatieren von profiliertem metallischem Bandmaterial zu einer netzartigen Mattenstruktur und Vorrichtung zur Durchführung des Verfahrens
DE102018005483A1 (de) 2018-07-11 2020-01-16 Hacanoka Gmbh Vorrichtung zum Walken eines Drahtadernbandes

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