EP0016267B1 - Procédé et dispositif pour tendre des matériaux - Google Patents

Procédé et dispositif pour tendre des matériaux Download PDF

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Publication number
EP0016267B1
EP0016267B1 EP19790300409 EP79300409A EP0016267B1 EP 0016267 B1 EP0016267 B1 EP 0016267B1 EP 19790300409 EP19790300409 EP 19790300409 EP 79300409 A EP79300409 A EP 79300409A EP 0016267 B1 EP0016267 B1 EP 0016267B1
Authority
EP
European Patent Office
Prior art keywords
ring
roll means
clamping force
stock
rollers
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
Application number
EP19790300409
Other languages
German (de)
English (en)
Other versions
EP0016267A1 (fr
Inventor
Keiichiro Yoshida
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE7979300409T priority Critical patent/DE2964939D1/de
Priority to EP19790300409 priority patent/EP0016267B1/fr
Publication of EP0016267A1 publication Critical patent/EP0016267A1/fr
Application granted granted Critical
Publication of EP0016267B1 publication Critical patent/EP0016267B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/12—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by stretching with or without twisting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F23/00—Feeding wire in wire-working machines or apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F23/00—Feeding wire in wire-working machines or apparatus
    • B21F23/002—Feeding means specially adapted for handling various diameters of wire or rod
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F9/00—Straining wire

Definitions

  • the present invention relates generally to processing a strip of metallic material or stock under high tension, and more poarticularly to a material tensioning method and apparatus for drawing, straightening or stretching the material or stock under high tension.
  • the invention provides in one aspect a material tensioning method for drawing, straightening or stretching a continuous strip of metallic material or stock under high tension, comprising holding the material between a pair of tensioning roll means and increasing the clamping force applied to the material or stock by said roll means as the tension increases, characterised in that each roll means is equipped with an elastic ring which elastically deforms to enlarge the area of the ring in contact with the material or stock as the clamping force increases, whereby the contact area over which the applied clamping force is distributed evenly increases, resulting in a reduction in the applied clamping force per unit area.
  • the contact area of the elastic ring is elongated in a circumferential direction of the ring by elastically deforming the ring.
  • the invention provides in another aspect material tensioning apparatus for drawing, straightening or stretching a continuous strip of metallic material or stock under high tension, comprising a pair of tensioning roll means having spaced parallel shafts at least one of which is drivable, characterised in that each roll means has an elastic ring mounted on the corresponding shaft for holding therebetween the material under high clamping force, in use, applied by said roll means, the elastic ring of each of said roll means being capable of elastic deformation which elongates the area of the ring in contact with the material or stock along the circumference of the ring as said clamping force increases.
  • each of said roll means includes a plurality of regularly-spaced rollers interposed for axial rotation between said shaft and said ring.
  • two of said rollers are arranged to bridge the ring over the ring contacting area of the material.
  • the outer peripheries of said rings together define a shape in cross section which corresponds to that of a material to be processed.
  • At least one of said shafts is drivable towards and away from the other shaft.
  • the apparatus shown therein comprises a pair of upper and lower horizontal driving shafts 1 and 2 arranged in parallel, each of the driving shafts having a set of idle rollers spaced at equal intervals thereon, as designated by 3, 3a and 3b, or 4, 4a and 4b, and an elastic ring 5 or 6 fitted over the idle rollers.
  • the two rollers 3 and 3a, or 4 and 4b in each set have a different function from the rest i.e. rollers 3b or 4a, which function will later be described in more detail.
  • the driving shafts 1 and 2 are powered by an external power source (not shown) for causing a rotation of the shafts in opposite directions, and the shaft 1 is constructed to be moved down in the direction of arrow 7 in FIG. 2 to increase the clamping force applied to a strip of material 13 as the tension increases.
  • the operation is performed in the following manner.
  • the driving shaft 1 is driven so as to rotate in the direction of arrow 8, causing axial rotation of the idle rollers 3, 3a and 3b in the directions of arrows 9, 10 and 11, respectively.
  • the rotation of the rollers 9, 10 and 11 causes rotation of the elastic ring 5 in the direction of an arrow 12.
  • the driving shaft 2 is driven concurrently with the shaft 1 and rotates in the opposite direction, and all the associated elements rotate in like manner to elements associated with the shaft 1, as indicated by arrows 16, 17, 18 and 19.
  • a strip of material 13, as shown a bar can be moved in the direction of arrow 14.
  • both shafts 1 and 2 are powered for rotation, but alternatively, only the shaft 1 may be driven with the other shaft 2 mounted for free rotation.
  • the elastic rings 5 and 6 are V-grooved at 20 and 21, respectively, around the outer peripheries thereof, which peripheries as shown are adapted for a bar 13 of square cross-section.
  • These elastic rings may be replaced by other elastic rings which are provided with any peripheral shape in cross-section depending upon the shape in cross-section of the material to be processed, such as round, flat, etc.
  • Three idle rollers are shown and described, but the number of the rollers is not limited to the described embodiment and may be varied, such as four.
  • the two rollers 3 and 3a, or 4 and 4b are arranged such that an isosceles triangle is formed by imaginary lines connecting the centers of the rollers and the mid-position of that area of the ring which contacts the material.
  • the two rollers are located at equal distances from said mid-position, or viewed from the contact area of the ring, said mid-position is located exactly between the two rollers.
  • the two rollers bridge the ring over the ring contacting area of the material.
  • the other roller 3b or 4a is functionally different from the above-mentioned rollers, in that this roller prevents the ring from being slipped out of position.
  • the graph shown in FIG. 1 represents the results of an experiment with a pair of elastic rings 5 and 6 in the above apparatus.
  • the experiment was carried out with the following parameters:
  • Material or stock to be processed 12.3 mm wide and 1.7 mm thick; tensile strength of 55 kg/ mm2.
  • the stock held between the elastic rings was placed under the above force, and the experiment shows that that area of the elastic ring in contact with the stock was elongated along the longitudinal direction of the stock due to the elastic deformation of the ring, the resulting length I being equal to approximately 7.0 mm.
  • a tension of 450 kg could be applied to the material with no accompanying effect of the rings upon the material. That is to say, the experiment shows there is no danger of the rings causing damage to the stock under that applied tension or affecting the thickness of the stock which would usually change if rolled.
  • FIG. 7 shows a continuous stretching machine in which two sets each of two pairs of elastic ring-equipped rolls A and B; C and D are arranged in series along the travelling path of a strip material 28.
  • a high-tension straightening machine shown in Figure 8 incorporates two spaced apart pairs of elastic ring-equipped rolls A and B, and a number of lever rollers 22 and 23 interposed between the two pairs, for removing strains from a strip material 29.
  • FIG. 9 shows a drawing machine including a die 24 with two pairs of elastic ring-equipped rolls A and B disposed at the outlet of the die for obtaining a desired diameter of a strip material 30.
  • FIG. 10 shows a high-tension rolling mill including multi-staged rolls 25 with two pairs of elastic ring-equipped rolls A and B, each pair installed on the opposite sides of the multi-staged rolls 25. This structure permits reciprocating movement of a strip material 27.
  • FIG. 11 shows a high-tension rolling mill including multi-staged rolls 25 with two pairs of elastic ring-equipped rolls A and B, each pair installed on the opposite sides of the multi-staged rolls 25. This structure permits reciprocating movement of a strip material 27.
  • FIG. 12 shows an arrangement in which each of the two pairs of elastic ring-equipped rolls A and B is installed on opposite sides of a die 33.
  • the pair of elastic ring-equipped rolls A is given a braking torque placing the part of the material 27 between the pair of elastic ring-equipped rolls A and the die 33 under a back tension.
  • the overall compressive force exerted on the die can be reduced.
  • FIGS. 4 to 6 The construction shown in FIGS. 4 to 6 is a realized form according to the principle of FIG. 8.
  • a material to be processed is a stainless steel flat bar 13 mm wide and 3 mm thick having a tensile strength of 80 kg/mm 2 . It is shown from the measuring results that a curve in the direction of width over 1 m length of the material can be straightened to within 0.3 mm as measured by a scale, and a curve in the direction of thickness can be so straightened as to make a 0.15 mm thickness gauge insertable.
  • a material previously twisted through an angle of 180 DEG over a length of 3 m is passed through the machine, and the result is that the twisted material can be untwisted to a straight line through a single pass, this being satisfactory as measured by a scale.
  • two pairs of the elastic ring-equipped rolls A and B described heretofore are mounted each pair on opposite sides of the machine, and two sets, each comprising a plurality of leveler rollers, 22 and 23 are mounted between the pairs A and B, one set having rollers disposed in a horizontal position for specifically correcting a lateral curve of a material 29, and the other set having rollers disposed in a vertical position for correcting a vertical curve.
  • the ring-equipped roll pairs A and B are set to rotate at a proper number of revolutions which provide a proper amount of tension for the part of the material between the two pairs of elastic ring-equipped rolls A and B.
  • the present invention is advantageous in that the material to be processed can be subjected to a maximum tension without causing damage such as permanent strain or deformation, to the portion thereof held between the elastic ring rolls since the areas of the rings in contact with the material increase with the increasing amount of clamping force, and the total applied clamping force can, therefore, be distributed over the increased areas and this results in a reduced force per unit area.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Metal Rolling (AREA)

Claims (8)

1. Procédé de tension de matériau pour étirer, dégauchir ou allonger une bande continue de matériau métallique ou un profilé sous tension élevée, comprenant le maintien du matériau (13) entre une paire de rouleaux tendeurs et l'augmentation de la force de serrage appliquée sur le matériau ou profilé par lesdits rouleaux au fur et à mesure de l'augmentation de la tension, caractérisé en ce que chaque rouleau est équipé d'une couronne élastique (5, 6) qui se déforme élastiquement pour agrandir la zone de la couronne en contact avec le matériau ou profilé au fur et à mesure de l'augmentation de la force de serrage de façon que la zone de contact sur laquelle est répartie uniformément la force de serrage, augmente, d'où il résulte une diminution de la force de serrage appliquée par unité de surface.
2. Procédé selon la revendication 1, caractérisé en ce que la zone de contact de la couronne élastique est agrandie suivant une direction circonférentielle de la couronne par déformation élastique de la couronne.
3. Appareil de tension de matériau pour étirer, dégauchir ou allonger une bande continue de matériau métallique ou un profilé sous tension élevée, comprenant une paire de rouleaux tendeurs ayant des arbres parallèles distants (1, 2) dont l'un au moins peut être déplacé, caractérisé en ce que chacun des rouleaux a une couronne élastique (5, 6) montée sur l'arbre correspondant (1, 2) pour maintenir entre eux le matériau sous une force de serrage élevée appliquée, en fonctionnement, par lesdits rouleaux, la couronne élastique de chacun desits rouleaux pouvant subir une déformation élastique qui agrandit la zone de la couronne en contact avec le matériau ou profilé (13) le long de la circonférence de la couronne au fur et à mesure de l'augmentation de ladite force de serrage.
4. Appareil de tension de matériau selon la revendication 3, dans lequel chacun desdits rouleaux comprend une pluralité de galets régulièrement espacés pour tourner axialement entre ledit arbre et ladite couronne.
5. Appareil de tension de matériau selon la revendication 4, dans lequel deux desdits galets sont disposés pour cambrer la couronne sur la zone du matériau en contact avec la couronne.
6. Appareil de tension de matériau selon la revendication 4 ou 5, dans lequel le nombre desdits galets dans chaque rouleau est trois.
7. Appareil de tension de matériau selon l'une quelconque des revendications 3 à 6, dans lequel les périphéries externes desdites couronnes présentent ensemble un profil dont la section correspond à celui d'un matériau à traiter.
8. Appareil de tension de matériau selon l'une quelconque des revendications 3 à 7, dans lequel au moins l'un desdits arbres est déplaçable de manière à l'approcher ou à l'éloigner de l'autre arbre.
EP19790300409 1979-03-15 1979-03-15 Procédé et dispositif pour tendre des matériaux Expired EP0016267B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE7979300409T DE2964939D1 (en) 1979-03-15 1979-03-15 Material tensioning method and apparatus
EP19790300409 EP0016267B1 (fr) 1979-03-15 1979-03-15 Procédé et dispositif pour tendre des matériaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19790300409 EP0016267B1 (fr) 1979-03-15 1979-03-15 Procédé et dispositif pour tendre des matériaux

Publications (2)

Publication Number Publication Date
EP0016267A1 EP0016267A1 (fr) 1980-10-01
EP0016267B1 true EP0016267B1 (fr) 1983-03-02

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ID=8186349

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790300409 Expired EP0016267B1 (fr) 1979-03-15 1979-03-15 Procédé et dispositif pour tendre des matériaux

Country Status (2)

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EP (1) EP0016267B1 (fr)
DE (1) DE2964939D1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7116170U (de) * 1971-08-05 Voeest Ag Vorrichtung zum Bremsen eines auf einen Haspelkern aufzuwickelnden, vor zugsweise in Längsrichtung mehrmals durch schmttenen Blechbandes
BE566801A (fr) * 1957-04-29
US3078519A (en) * 1959-10-08 1963-02-26 Pirelli Elastic draft pressure roller for spinning machines
DE1240804B (de) * 1962-01-03 1967-05-24 Ramisch & Co Dr Kalanderwalze
US3684146A (en) * 1969-10-20 1972-08-15 Olivetti & Co Spa Feed device for a metal strip
DD122928A1 (de) * 1975-11-20 1976-11-12 Dieter Heinke Walzenvorschubapparat
DE7606455U1 (de) * 1976-03-04 1976-07-01 Dyckerhoff & Widmann Ag, 8000 Muenchen Vorschubeinrichtung fuer stahldraht zur bildung von buendelspanngliedern fuer spannbeton

Also Published As

Publication number Publication date
DE2964939D1 (en) 1983-04-07
EP0016267A1 (fr) 1980-10-01

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