EP0013653B1 - Dispositif de fabrication de cornières cintrées - Google Patents

Dispositif de fabrication de cornières cintrées Download PDF

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Publication number
EP0013653B1
EP0013653B1 EP80400046A EP80400046A EP0013653B1 EP 0013653 B1 EP0013653 B1 EP 0013653B1 EP 80400046 A EP80400046 A EP 80400046A EP 80400046 A EP80400046 A EP 80400046A EP 0013653 B1 EP0013653 B1 EP 0013653B1
Authority
EP
European Patent Office
Prior art keywords
section
rolls
press
flange
contact
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
EP80400046A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0013653A1 (fr
Inventor
René Planeau
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.)
Etudes Generales D'ingenierie Mecanique Et Outillages (egimot) Dite Ste
Original Assignee
Etudes Generales D'ingenierie Mecanique Et Outillages (egimot) Dite Ste
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 Etudes Generales D'ingenierie Mecanique Et Outillages (egimot) Dite Ste filed Critical Etudes Generales D'ingenierie Mecanique Et Outillages (egimot) Dite Ste
Priority to AT80400046T priority Critical patent/ATE11646T1/de
Publication of EP0013653A1 publication Critical patent/EP0013653A1/fr
Application granted granted Critical
Publication of EP0013653B1 publication Critical patent/EP0013653B1/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
    • B21D53/00—Making other particular articles
    • B21D53/16—Making other particular articles rings, e.g. barrel hoops

Definitions

  • the invention relates to a device for manufacturing elements of circular flange sleeves by folding a strip into a straight angle followed by the longitudinal rolling of one of the two wings of said angle.
  • Such sleeves are commonly obtained by stamping, which has the disadvantage of causing ruptures due to the large differences in stretching between zones of different diameters.
  • the operating mode is of the unit type, that is to say that the parts must be manufactured one by one, which is time-consuming and labor-intensive.
  • Document GB-A-11.692 also discloses a machine for making sleeves with an outer flange or an inner flange, but this machine is designed as a rolling mill working hot irons and always using three rolling rolls with, in addition, rolls auxiliaries to initiate the bending or curvature of the irons.
  • the rolling rolls are frustoconical or with an inclined axis to produce flanges with an inclined face.
  • this machine cannot be used to manufacture from a cold-worked strip sleeves with an essentially flat outer or inner flange.
  • the object of the invention is to propose a new device making it possible to obtain cold at high speed from a strip of elements of sleeves with internal or external flange of very good quality and to adjust their diameters as desired, according to needs, without the need to modify the installation.
  • Another object of the invention is to provide an installation capable of producing, continuously, elements of sleeves with internal or external flanges in a wide range of diameters.
  • a device which comprises at least one press having a plurality of possibly frustoconical cylinders with contact lines with the L-profile to be laminated, driven for the rolling of a wing of this L-profile with , at the end of the cylinders, a passage space for the other wing of the L-profile, with which the L-profile is obtained by profiling a strip in a profiling train, however the bending press for obtaining an internal flange and the bending press for obtaining an external flange comprise for the bending or the curvature of the L-profile only two cylinders in which on the one hand the contact lines of the cylinders mutually make an angle of 0.1 to 3 ° while the the passage space of the other wing of the L-profile at the end of the cylinders is provided on the side where the contact lines are not the most distant from one another and on the other hand the contact lines of the cylinders angle of 0.1 to 3 ° while q ue the passage space of the other wing
  • the device comprises, upstream of the press or presses, a means of unwinding a strip of tape wound in a roll and, in addition, a guide and cutting means mounted downstream of the press or presses.
  • a device thus designed, one obtains from a strip, by operating cold, sleeves of different diameters by means of simple adjustments, having a choice of an external flange or an essentially flat internal flange.
  • the Applicant has been able to observe that, in the device according to the invention, the embossing and notch defects caused by bending with a bender are eliminated.
  • a type of angle iron for this use must have, to protect the edges of the strip in the vicinity of the central recess, a coiled wing of small bending diameter with a flange on the convex side, here called external flange.
  • a second type is necessary to protect the edges of the strip on the periphery of the coil, this type having a coiled wing of larger diameter than the first type and a flange on the concave side, here called internal flange.
  • angles it is customary for such angles to be annular with edges overlapping freely at their ends or in the form of annular sectors used in pairs overlapping freely at their ends.
  • the application of the installation described is not limited to the production of curved angles for the protection of the strip reels, the user being able to cut the curved strips at any desired sector, in particular 360 °, and weld the ends if necessary, for example to obtain cylindrical flange sleeves.
  • a reel 1 Upstream of the installation proper, there is a reel 1 with a vertical axis for unwinding a strip 2.
  • the strip 2 enters the installation between two guide rollers 3 with vertical axes and then crosses a profiling line, at an angle 8, of a type known per se, comprising four trains 4, 5, 6, 7 duo of cylinders with vertical axes leading progressively, according to 8a, 8b, 8c to a square profile 8.
  • angle iron 8 is presented to the presses 10 or 20 with one wing 8f perpendicular to the plane of the figure and the other wing 8e towards the bottom of the figure in the plane parallel to that of the figure farthest from the observer of this figure.
  • the two cylinders 11 and 12 of the bending press 10 have vertical axes and are provided for laminating the wing 8f, and leave, at least at the end furthest from the cylinder 12 from the bottom of the figure, a space, on the side of the frame, for the free passage of the 8th wing.
  • the rolling of the single wing 8f, clamped by the wing 8e not subjected to rolling, will tend to stretch its fibers all the more as they will be further from the wing 8e, whence a winding according to 8y accompanied by a warping away the angle thus wound behind the plane of the figure to be received on a horizontal plate 30, also in the background of the figure, where it is then supported by rollers 31 with horizontal axes.
  • the cylinders of the press 10 it is advantageous for the cylinders of the press 10 to be slightly frustoconical and present an angle of 0.1 to 3 ° between them on the contact generatrices, the generatrices of the cylinders being as close as possible to each other in close proximity to the edge between the wings 8e and 8f. In this way we reduce, and we can even almost eliminate warping since we exert a greater rolling force on the fibers near the edge than on the most distant fibers. But then, it is advantageous to subject the wing 8e to a pushing force by means, for example, of a roller 11 'with horizontal axis arranged in the space provided between the cylinder at the bottom of the figure and the frame.
  • the two cylinders 21 and 22 are frustoconical and have between them, on the contact generators, an angle of 0.1 to 3 °, the generatrices of the cylinders being at most close to each other on the side of wing 8f furthest from the fold of connection with wing 8e.
  • the longitudinal fibers of the wing 8f are the most stretched on the edge furthest from the edge, while the longitudinal fibers of the wing 8f in the vicinity of the edge are only slightly or not at all. stretched.
  • the wing 8e is stretched in a differentiated manner while being bordered by the wing 8f not stretched, from where a partial rolling of the wing 8e which is arranged in a flat crown around the wing 8f constrained then to wind up perpendicular to its plane.
  • the wing 8f undergoes stretching stresses in the vicinity of the edge, hence a slight warping which can be used to direct the angle iron, for example, towards the plate 30 where, after being guided by a roller 25 with a horizontal axis, it is received, in the form of a sleeve element with an external flange, on rollers 32.
  • the plate 30 further comprises at least one device 35 of known type with guillotine blade for cutting the elements of the sleeves.
  • This device 35 is mobile and can be fixed at will on the plate 30, for example 180 ° from the point of curvature of the elements 8z or for example 120 ° from the point of curvature of the elements 8y, or any other suitable place.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Forging (AREA)
EP80400046A 1979-01-12 1980-01-14 Dispositif de fabrication de cornières cintrées Expired EP0013653B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80400046T ATE11646T1 (de) 1979-01-12 1980-01-14 Vorrichtung zur herstellung gebogener winkeleisen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7900738 1979-01-12
FR7900738A FR2446140A1 (fr) 1979-01-12 1979-01-12 Procede et dispositif de fabrication de cornieres cintrees

Publications (2)

Publication Number Publication Date
EP0013653A1 EP0013653A1 (fr) 1980-07-23
EP0013653B1 true EP0013653B1 (fr) 1985-02-06

Family

ID=9220680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400046A Expired EP0013653B1 (fr) 1979-01-12 1980-01-14 Dispositif de fabrication de cornières cintrées

Country Status (5)

Country Link
EP (1) EP0013653B1 (enExample)
AT (1) ATE11646T1 (enExample)
CA (1) CA1144559A (enExample)
DE (1) DE3070089D1 (enExample)
FR (1) FR2446140A1 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3529152C2 (de) * 1984-10-03 1986-11-20 Dieter Dipl.-Ing. 6242 Kronberg Kunz Vorrichtung zur Herstellung eines Winkelringes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191511692A (en) * 1915-08-13 1916-08-14 William Scott An Improved Machine for Bending Angle-iron, or Tee-iron Bars into Hoops, Rings or the like.
FR910403A (fr) * 1944-11-21 1946-06-06 Sncase Machine à cintrer les profilés dont l'épaisseur est faible relativement à l'étendue des sections
DE952143C (de) * 1954-09-16 1956-11-08 Schwermaschb Heinrich Rau Veb Verfahren und Vorrichtung zum Regeln des Walzdruckes beim Hochkantbiegen von Flach- und Profilstahl
US2948322A (en) * 1956-05-23 1960-08-09 Quadriga Mfg Company Apparatus for forming an oil seal inner shell
US2922324A (en) * 1956-11-07 1960-01-26 Anemostat Corp America Machine for curving strip material
US3138191A (en) * 1961-03-06 1964-06-23 Kolk Mfg Co Inc Metal rolling machine
DE1452558A1 (de) * 1962-04-10 1969-04-03 Basf Ag Verfahren und Vorrichtung zur Herstellung von Ringen aus Bandeisen
JPS4946467B1 (enExample) * 1970-07-16 1974-12-10
US3746238A (en) * 1971-10-05 1973-07-17 Thornton F C Co Welding and cutting apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
ATE11646T1 (de) 1985-02-15
DE3070089D1 (en) 1985-03-21
EP0013653A1 (fr) 1980-07-23
CA1144559A (fr) 1983-04-12
FR2446140B1 (enExample) 1983-11-04
FR2446140A1 (fr) 1980-08-08

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