EP0560432B1 - Méthode et appareil pour la réalisation d'une flasque annulaire à partir de bandes métalliques - Google Patents

Méthode et appareil pour la réalisation d'une flasque annulaire à partir de bandes métalliques Download PDF

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Publication number
EP0560432B1
EP0560432B1 EP19930200604 EP93200604A EP0560432B1 EP 0560432 B1 EP0560432 B1 EP 0560432B1 EP 19930200604 EP19930200604 EP 19930200604 EP 93200604 A EP93200604 A EP 93200604A EP 0560432 B1 EP0560432 B1 EP 0560432B1
Authority
EP
European Patent Office
Prior art keywords
strip
channel
bending
annular flange
holding
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
EP19930200604
Other languages
German (de)
English (en)
Other versions
EP0560432A1 (fr
Inventor
Johannes Vermeij
Louis Maria Zonneveld
Reindert Jobse
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.)
Tata Steel Ijmuiden BV
Original Assignee
Hoogovens Staal BV
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Filing date
Publication date
Application filed by Hoogovens Staal BV filed Critical Hoogovens Staal BV
Publication of EP0560432A1 publication Critical patent/EP0560432A1/fr
Application granted granted Critical
Publication of EP0560432B1 publication Critical patent/EP0560432B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
    • B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
    • B21D19/046—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers for flanging edges of tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/02—Containers, packaging elements or packages, specially adapted for particular articles or materials for annular articles
    • B65D85/04—Containers, packaging elements or packages, specially adapted for particular articles or materials for annular articles for coils of wire, rope or hose

Definitions

  • the invention relates to a method and an apparatus for the manufacture of an annular flange from a metal strip.
  • a flange is for example intended for use in packing cylindrical products such as coils of steel.
  • the invention also relates to an apparatus and a turntable for use in the manufacture of such a flange.
  • flanges used in practice for packing coils of steel are manufactured by a method illustrated by Figs. 1a-d described below, in which a metal strip is first deformed into an angle bar by bending or an angle bar is directly taken as a starting point.
  • the angle bar is deformed by feeding one of its two faces through two toothed wheels which are set in such a way that they create a flange.
  • the diameter of the flange so formed depends on among other things the gap between and the oblique alignment of the toothed wheels and on the deformation properties of the strip.
  • This method is suitable particularly for manufacturing a series of flanges of the same diameter one after the other, after the correct settings have been found following the preparation of a number of test flanges.
  • Evidence of this is also to be seen in the fact that flanges manufactured in this way intended for packing coils of steel are sold in a set range of sizes, the diameter sizes available commercially increasing in set increments.
  • annular flanges Other known methods of making annular flanges are to deform a flat annulus of metal by bending one edge portion, as illustrated by GB-A-1404671 and GB-A-2147231, or to hold a strip in a cylindrical shape and bend an edge portion of the strip, as illustrated by FR-A-2329370.
  • the object of the invention is to provide a method and an apparatus by which flanges of the desired size may be manufactured reproducibly and efficiently, whereby different sizes can be easily selected.
  • this object is accomplished in a method having the features of claim 1.
  • This provides a method for the manufacture of flanges of different sizes, the flange size being the result of the location in the spiral channel where the strip forms an approximate circle of a predetermined diameter.
  • the circular shape of the strip need not be exact, since there is usually some tolerance for the final shape of the flange.
  • the bending is preferably carried out by forming.
  • forming is understood to be the gradual deformation of the cylindrical strip, which is preferably rotating, into a flange by pressing it against a rotating forming tool. This method is particularly suited to automation, notably where carried out with the aid of the apparatus of the invention to be described.
  • the channel is carried by a turntable.
  • the channel has a spiral shape, so that the diameter of the annular flange can be controlled by locating the strip at a location of the spiral channel of a desired diameter.
  • the apparatus may have means for feeding the strip into the spiral channel comprising a clamp for the strip which is relatively movable radially and tangentially with respect to the channel.
  • This spiral shape achieves the effect that the resultant flange size is infinitely adjustable by holding a strip of the correct length in a position in the spiral which corresponds with the desired flange diameter.
  • the theoretical deviation from a pure circular shape occurring from the spiral shape can be so slight that it is negligible.
  • the bending means is forming tooling comprising a set of conical rollers between which the projecting part of the strip fits, the conical rollers being movable radially in relation to the channel.
  • the apparatus may comprise a yoke with a movable slide fitted to it on which the conical rollers are placed.
  • the gap between the conical rollers is less than twice the thickness of the strip multiplied by the number of flanges to be manufactured simultaneously.
  • the invention also extends to the turntable for use in the method or the apparatus in accordance with the invention, having a channel of spiral shape for receiving the strip according to claim 7.
  • Figures 1a, 1b, 1c and 1d show strip, angle bar, deforming tool and flange in method steps used in a current known practice.
  • Figures 2a, 2b and 2c show strip, deforming tool and flange in steps in another method.
  • FIGS 3a, 3b and 3c show method steps and apparatus according to the invention.
  • Figure 3d shows the holder used in Figures 3a-c, with additional parts, and Figure 3e is detail A of Figure 3d.
  • a metal strip 1 is fed in from a coil 4 in the vicinity of the apparatus (Fig. 2a).
  • the flange-forming apparatus consists essentially of a holder in the form of turntable 5 with a complete circular channel or groove 6 in one face and bending means in the form of forming rollers 8,9.
  • the strip is fed into the channel 6 at a slight downward angle to the radial plane of the channel while simultaneously the holder is rotated so that the strip enters the channel 6 tangentially.
  • the length of the strip is somewhat greater than the outside circumference of the channel 6 so that head and tail of the strip overlap one another. To make this overlap possible, the width of the channel is made slightly greater than twice the thickness of the strip.
  • the strip is now lying edgewise in the channel 6 and has an edge portion projecting out of the channel.
  • the forming tool which has a pair of conical forming rolls 8,9 with a gap between them is brought into position and moved with a controlled movement radially inwards while the holder 5 rotates.
  • the shortest distance between the two forming wheels 8 and 9 which in accordance with GB-A-02147231 should be slightly less than the thickness of the strip, in the present case is slightly less than twice the strip thickness in order to make possible passage of the overlapping part of the flange in during formation.
  • the strip 1 is fed tangentially into a holder having a turntable 14 containing a spiral channel 10 with the turntable 14 at standstill.
  • the strip is further advanced by simultaneous rotation of the turntable 14 so that the strip moves along the outside of the holder until a position is reached as shown in Fig. 3b.
  • the strip is held in this position by for example guide rollers 11 on the turntable.
  • the head of the strip is held firmly by a clamping device 12 which is shown schematically in Fig. 3b and is freely movable radially and fixed tangentially relative to the turntable 14, while simultaneously the turntable 14 is rotated in the opposing direction.
  • a clamping device 12 which is shown schematically in Fig. 3b and is freely movable radially and fixed tangentially relative to the turntable 14, while simultaneously the turntable 14 is rotated in the opposing direction.
  • the strip is moved towards the centre of the spiral 10; travelling stops when the strip arrives at the desired flange diameter.
  • the length of the strip is determined by the desired flange diameter.
  • forming takes place by moving the forming tool 7 which is a pair of forming rollers, as shown in Fig. 3d in the direction of the arrow along a yoke 15 on which the tool 7 is supported by a carriage.
  • the yoke 15 is made in such a way that it may be taken away for removal of the manufactured flange. During this, the direction of rotation of the turntable 14 may be reversed again, in order to prevent any relative motion of the strip relative to the turntable 14.
  • the clamping device 12 may also be suspended on the yoke 15 as shown in Fig. 3d.
  • the turntable 14 is for example composed of a spider frame of crossing beams on which a twin spiral of curved pieces of strip steel is welded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Wire Processing (AREA)
  • Basic Packing Technique (AREA)

Claims (7)

  1. Procédé pour former un flasque annulaire (13) à partir d'une longueur de bande métallique (1) par cintrage de la bande, comprenant les étapes consistant à maintenir la bande (1) sous une forme cylindrique à l'aide d'un moyen de maintien (5, 10) et à cintrer une partie marginale de la bande maintenue dans ladite forme cylindrique de manière à former ledit flasque annulaire (13), caractérisé par le fait que ledit moyen de maintien comporte une rainure (10) en spirale, et que l'on effectue ledit maintien en amenant la bande jusqu'à un endroit dans la rainure en spirale où la bande forme un cercle approximatif d'un diamètre prédéterminé.
  2. Procédé selon la revendication 1, dans lequel on forme une pluralité de flasques annulaires (13) en maintenant et cintrant une pluralité de bandes (1) simultanément.
  3. Appareil pour former un flasque annulaire (13) à partir d'une longueur de bande métallique (1), comprenant un moyen de maintien comportant une rainure (6, 10) s'étendant suivant un trajet courbe afin de maintenir au moins une partie de la bande sous une forme circulaire, et un moyen de cintrage (8, 9) pouvant être déplacé par rapport à la rainure (6, 10) de manière à cintrer une partie marginale de la bande qui fait saillie de la rainure afin de former ledit flasque annulaire, caractérisé en ce que ladite rainure (10) a la forme d'une spirale, de sorte que l'on peut régler le diamètre du flasque annulaire en plaçant la bande (1) à un endroit de ladite rainure en spirale (10) de diamètre voulu.
  4. Appareil selon la revendication 3, dans lequel ladite rainure (6, 10) est située sur un plateau tournant (5, 14).
  5. Appareil selon la revendication 3 ou 4, caractérisé par un moyen qui sert à avancer ladite bande jusque dans ladite rainure en spirale (10) et qui comprend un élément de blocage (12) pour ladite bande, cet élément de blocage étant relativement mobile radialement et tangentiellement par rapport à ladite rainure (10).
  6. Appareil selon l'une quelconque des revendications 3 à 5, caractérisé en ce que ledit moyen de cintrage comprend une paire de galets (8, 9) entre lesquels se trouve un intervalle de cintrage, ladite paire de galets (8, 9) pouvant être déplacés radialement par rapport à ladite rainure (6, 10).
  7. Plateau tournant (5, 14) destiné à être utilisé comme moyen de support pour la bande (1) dans le procédé de la revendication 1 ou dans l'appareil de la revendication 3, comportant un rainure (6, 10) réceptrice de bande et ayant la forme d'une spirale.
EP19930200604 1992-03-13 1993-03-03 Méthode et appareil pour la réalisation d'une flasque annulaire à partir de bandes métalliques Expired - Lifetime EP0560432B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9200473A NL9200473A (nl) 1992-03-13 1992-03-13 Werkwijze, inrichting en draaitafel voor het vervaardigen van een kraag.
NL9200473 1992-03-13

Publications (2)

Publication Number Publication Date
EP0560432A1 EP0560432A1 (fr) 1993-09-15
EP0560432B1 true EP0560432B1 (fr) 1996-06-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930200604 Expired - Lifetime EP0560432B1 (fr) 1992-03-13 1993-03-03 Méthode et appareil pour la réalisation d'une flasque annulaire à partir de bandes métalliques

Country Status (3)

Country Link
EP (1) EP0560432B1 (fr)
DE (1) DE69303068T2 (fr)
NL (1) NL9200473A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8783078B2 (en) * 2010-07-27 2014-07-22 Ford Global Technologies, Llc Method to improve geometrical accuracy of an incrementally formed workpiece
CN118279225B (zh) * 2022-12-30 2025-11-14 北京瓦特曼智能科技有限公司 用于钢卷单边溢出缺陷的检测方法、系统及存储介质

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR959857A (fr) * 1950-04-06
US2231400A (en) * 1937-08-25 1941-02-11 American Rolling Mill Co Hot coiler feeding means and method
DE1752574A1 (de) * 1968-06-15 1971-05-19 Rudisleben Chemieanlagenbau Bordmaschine mit einer an ihr angeordneten Aufnahmevorrichtung
FR2329370A1 (fr) * 1975-10-31 1977-05-27 Coil Protection Service Procede et appareillage pour realiser des cornieres de faible epaisseur et de forme cintree
DD134493B1 (de) * 1978-02-09 1986-04-23 Leipzig Chemieanlagen Vorrichtung zum umboerdeln von metallbaendern
NL8302807A (nl) * 1983-08-10 1985-03-01 Hoogovens Groep Bv Werkwijze voor het door middel van forceren uit een schijfvormige metaalplaat vervaardigen van een deksel met een omgezette rand, daarbij te gebruiken forceermachine en aldus vervaardigd deksel.

Also Published As

Publication number Publication date
NL9200473A (nl) 1993-10-01
DE69303068T2 (de) 1996-11-07
DE69303068D1 (de) 1996-07-18
EP0560432A1 (fr) 1993-09-15

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