EP3388162B1 - Dispositif pour une ligne de profilage - Google Patents

Dispositif pour une ligne de profilage Download PDF

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Publication number
EP3388162B1
EP3388162B1 EP18157664.6A EP18157664A EP3388162B1 EP 3388162 B1 EP3388162 B1 EP 3388162B1 EP 18157664 A EP18157664 A EP 18157664A EP 3388162 B1 EP3388162 B1 EP 3388162B1
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EP
European Patent Office
Prior art keywords
operating unit
profiled element
contact
rollers
conical portion
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Application number
EP18157664.6A
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German (de)
English (en)
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EP3388162A1 (fr
Inventor
Andrea Anesi
Luciano Micali
Fabio Barbolini
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Fives Oto SpA
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Fives Oto SpA
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Publication of EP3388162A1 publication Critical patent/EP3388162A1/fr
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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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B21B27/028—Variable-width rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
    • B21B13/103—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane for rolling bars, rods or wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B21B27/024—Rolls for bars, rods, rounds, tubes, wire or the like
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
    • B21D5/086—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers for obtaining closed hollow profiles

Definitions

  • the present invention relates to an operating unit for a profiling line and to a method for profiling a profiled element according to the preambles of claims 1 and 9.
  • Such an operating unit and such a method are for example disclosed in JP-A-2003251413 .
  • the invention relates to an operating unit having shaped rollers for profiling lines for tubes having a polygonal section, for example rectangular or square.
  • a profiling line allows a tubular profiled element to be produced starting from a steel strip which is progressively bent back in line about a longitudinal axis thereof until it assumes a tubular conformation wherein the longitudinal edges of the strip are arranged alongside one another in the upper zone of the profiled element.
  • a profiling line substantially comprises a series of bending units, arranged in succession, each of which comprises two or more profiling rollers. The progressive bending of the profiled element takes place by making the strip pass through the rollers of the various bending units which, by contact, progressively deform it. The strip slides continuously through the bending units, being progressively deformed.
  • the longitudinal edges are welded together.
  • the profiled element is subsequently cut into portions of a pre-established length, according to known processes.
  • the whole production is performed in line, i.e. while the profiled element is continuously advancing.
  • the bending of the strip initially takes place by the operation of rollers that are located at the points in which the corners of the profiled element are to be realised.
  • rollers are positioned above and below the strip, at the corners that will progressively form.
  • On the lower or external side of the strip rotating rollers are positioned which exert an opposite pressure to the pressure exerted by the discs.
  • Discs and rollers are aligned in succession along the longitudinal axis of the strip, supported by a support structure which can assume various configurations.
  • a progressive bending is achieved about the longitudinal axis, up to obtaining a profiled element that is closed and tube-shaped.
  • the closing of the tube takes place in a terminal portion of the line, along which the two opposite edges of the strip are brought side-by-side with one another and then welded in line, for example by induction or high-frequency welding, in a known way in the sector.
  • the terminal portion of the line which produces the closing of the profiled element generally comprises a plurality of rollers, arranged outside the profiled element.
  • the rollers are positioned outside the profiled element as, physically, a sufficient space is not available to enable an internal location of sufficiently sturdy rollers.
  • the orientation of the various rollers, which can be adjustable, varies progressively along the terminal portion of the line, for progressively guiding the profiled element to the closing step.
  • the profiled element reaches such terminal portion when it has a substantially U-shaped bent section defined by a horizontal lower side, two sides that diverge from one another in an upwards direction, and two upper sides inclined upward so as to be converging towards each other.
  • the two upper sides are destined to flank one another in a horizontal position, to define the upper side of the section.
  • each cage generally comprises a lower roller, with a horizontal rotating axis, two lateral rollers, with rotating axes parallel to the sides of the profiled elements and diverging from one another in an upwards direction, and two upper rollers, which can be conical or cylindrical; in the last case with the rotating axes converging to each other in an upwards direction.
  • the rotating axes of the lateral rollers of the various cages progressively incline towards a vertical direction.
  • the rotating axes of the various upper rollers, or the taper thereof in a case where they are realised in a conical form, progressively incline towards a horizontal direction.
  • each cage must be provided with complex adjustment devices, which enable varying the inclination and the position of the rollers at least on a vertical plane.
  • the activating of these adjustment devices can be considerably laborious, and often requires the use of complex set-up software.
  • rollers at present used, associated to the respective cages often do not realise a correct closure of the profiled element.
  • the two upper sides are not always arranged perfectly coplanarly, with the edges perfectly flanked to one another, so that it is necessary to perform very accurate adjustments of the positions of the various rollers.
  • rollers at present used do not enable precisely realising the fillet radii required between the sides of the profiled element. This is because, during the closing step of the profiled element, the upper edges of the profiled element can slide in an undesired way on the surfaces of the upper rollers.
  • the object of the present invention is to disclose an operating unit for a profiling line and a method for profiling which enables obviating the drawbacks summarised.
  • An advantage of the operating unit according to the present invention is that it facilitates the correct closing of the profiled element, drastically reducing the need to adjust the position of the various rollers.
  • Another advantage of the operating unit according to the present invention is that it enables very precisely obtaining the fillet radii required between the various sides of the profiled element.
  • a further advantage of the operating unit according to the present invention is that it significantly prevents or limits any tendency of the profiled element to twist about the longitudinal axis thereof.
  • Figure 3 schematically illustrates a portion of the finishing portion of a profiling line.
  • three operating units (M) are illustrated, each provided with two shaped rollers (1) according to the present invention.
  • the operating units (M) are aligned along a longitudinal direction (Y) which also defines the longitudinal axis of the profiled element (P).
  • the profiled element (P) that enters each operating unit presents, on a section carried out with a plane perpendicular to the longitudinal direction (Y), a lower side (B), two sides (S1, S2) and two upper sides (T1, T2) inclined upward so as to be converging towards each other ( figure 2 ).
  • the lower side (B) is substantially horizontal.
  • the sides (S1, S2) can be divergent in an upwards direction, as in the represented case. Proceeding progressively along the finishing portion through the various operating units, the sides (S1, S2) assume a position progressively closer to the vertical axis, while the upper sides progressively approach a horizontal position.
  • the shaped roller of the operating unit comprises a conical portion (2) and an end portion (3), concentric with respect to a rotating axis (Z).
  • the rotating axis (Z) is preferably though not necessarily horizontal and is perpendicular to the longitudinal direction (Y).
  • the conical portion (2) is provided with a vertex section (23), in which the diameter is minimal.
  • the end portion (3) has a greater diameter than the vertex section (23). In this way, the end portion (3) defines a shoulder from the surface of the first conical portion (2).
  • the conformation of the shaped roller (1) of the operating unit according to the present invention provides important advantages.
  • the conical portion (2) is predisposed to enter into contact with an upper side (T1) of the profiled element.
  • T1 As it enters into contact with the conical portion (2), such upper side (T1) assumes an inclination that is substantially coincident with the taper of the conical portion (2).
  • the shaped rollers of the operating unit according to the present invention can be arranged with the rotating axis horizontal.
  • the end portion (3) provided with a greater diameter with respect to the vertex section (23), defines a shoulder in contact with which the edge of the upper side (T1) is positioned, as schematically illustrated in figure 1 .
  • the upper side (T1) does not slide on the surface of the conical portion (2) and can be bent thereby with a high degree of precision, enabling predetermined fillet radii to be realised with the side (S1).
  • the shaped rollers (1) of the various operating units have a taper that gradually decreases in the advancement direction of the profiled element, up to reaching a very small taper or becoming substantially cylindrical so as to bring the upper sides (T1, T2) into a position that is very close to a horizontal position.
  • a welding group that, by means of an upper cylindrical roller or other means, makes the upper sides (T1, T2) substantially horizontal and ready for the subsequent welding.
  • the end portion (3) is preferably though not necessarily conical and is connected to the conical portion (2) at the vertex section (23).
  • the conical conformation of the end portion (3), the inclination of which, with respect to the rotating axis (Z), is opposite with respect to that of the conical portion (2) enables reducing the peaks of pressure which can occur at the vertex section (23) and at the edge of the upper side (T1).
  • the conical conformation of the end portion (3) facilitates overall the machining of the surface of the roller.
  • the angle included between the tapers of the conical portion (2) and of the end portion (3) is preferably but not necessarily greater than or equal to a right angle. This enables obtaining the advantages connected with the conical conformation of the end portion (3), maintaining a solid rest for the edge of the upper side (T1).
  • the shaped roller has shoulders (21, 31), i.e. zones located at the ends of the roller, having a cylindrical shape.
  • the operating unit according to the present invention comprises two shaped rollers (1), positioned with the end portions (3) thereof facing each other, i.e. positioned with the end portions facing towards the longitudinal direction (Y) and towards a vertical plane containing the longitudinal direction (Y).
  • the two shaped rollers (1) have the rotating axes (Z) thereof aligned. This solution enables reducing the dimensions of the operating unit along the longitudinal axis (Y).
  • the shaped rollers (1) are arranged so that the upper sides (T1, T2) of the profiled element are in contact with the conical portion (2). As already mentioned, as they enter into contact with the conical portion (2) of the rollers (1), the upper sides (T1, T2) assume an inclination that is substantially coincident with the taper of the conical portion (2). As already mentioned, the shaped rollers (1) of the various operating units have a taper that gradually decreases in the advancement direction of the profiled element, so as to bring the upper sides (T1, T2) in a position progressively closer to the horizontal position.
  • the operating unit can be provided with adjustment means to allow the movement of the shaped rollers (1) along one or more horizontal directions and/or along a vertical direction.
  • the adjustment means can enable the nearing or distancing of the rollers (1) along a horizontal direction parallel to the rotating axes and/or a displacement of the rollers (1) along a direction parallel to the longitudinal axis (Y).
  • the adjustment means are not illustrated in greater detail as they are known to a person skilled in the sector.
  • the possibility of adjusting the position of the shaped rollers (1) enables varying the shape and section of the profiled element (P), and varying the progression of the bending of the profiled element (P).
  • the operating unit (M) can be further provided with a lower roller (11), arranged to come into contact with the lower side (B) of the profiled element.
  • the lower roller (11) is inclined in accordance with the inclination that it is desired to obtain for the lower side (B) of the profiled element.
  • the lower roller (11) is cylindrical and is arranged with the rotating axis horizontal.
  • Adjustment means can be predisposed to enable the movement of the lower roller (11) along one or more horizontal directions and/or along a vertical direction, in order to enable various sections of the profiled element (P) to be obtained.
  • the adjustment means are not illustrated in greater detail as they are known to a person skilled in the sector.
  • a lower roller (11) is interposed between two consecutive operating units (M).
  • the operating unit (M) can further comprise a pair of lateral rollers (12, 13), arranged to come into contact with the sides (S1, S2) of the profiled element.
  • the lateral rollers (12, 13) can have a conical or cylindrical conformation (respectively figures 4 and 5 ); in the latter case with an inclinable and adjustable rotating axis. As they enter into contact with the surface of the lateral rollers (12, 13), the sides (S1, S2) assume an inclination that substantially coincides with the taper of the lateral rollers (12, 13), in the first case, or substantially coincides with the inclination of the lateral rollers (12, 13) in the second case.
  • each end portion (3) defines a reaction point for the edge of an upper side (T1, T2), which cannot therefore slide on the conical surface of the roller.
  • T1, T2 upper side
  • the lateral rollers (12,13) to press on the sides (S1, S2) in a uniform manner, given that the sides (S1, S2) cannot flex (this is because of the block of the upper sides (T1, T2) due to the end portions (3)).
  • the sides (S1, S2) exactly copy the inclination of the surface of the lateral rollers (12, 13), enabling the precise realising of the predetermined radii of curvature on the corners of the profiled element (P).
  • the lateral rollers (12, 13) of the various operating units have a taper or inclination that gradually decreases in the advancement direction of the profiled element, up to becoming substantially cylindrical or vertical. This enables bringing the sides (S1, S2) into a substantially vertical position. Adjusting means (not illustrated as known to the skilled person in the sector) can be arranged to enable a displacement of the lateral rollers (12, 13) along one or more horizontal directions and along a vertical direction.
  • the possibility of adjusting the position of the lateral rollers (12, 13) enables varying the shape and dimensions of the cross-section of the profiled element (P), and varying the progression of the bending of the sides (S1, S2), increasing the flexibility of the line and making it substantially universal (within a wide range of sections realisable for the profiled element).
  • rollers mentioned and described can be motorized or idle, in a known way for the technical expert in the sector, according to the effective production needs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)

Claims (11)

  1. Unité de fonctionnement pour une ligne de profilage, disposée pour recevoir en entrée un élément profilé présentant une section transversale formée par un côté inférieur (B), deux côtés (S1, S2) et deux côtés supérieurs (T1, T2) inclinés vers le haut de sorte à converger les uns vers les autres, l'unité de fonctionnement comprenant :
    deux rouleaux façonnés (1), comportant chacun une partie conique (2) et une partie d'extrémité (3), concentriques par rapport à un axe de rotation (Z) ;
    dans laquelle la partie conique (2) est munie d'une section de sommet (23) où le diamètre du rouleau (1) est minimal, dans laquelle la partie d'extrémité (3) est raccordée à la partie conique (2) au niveau de la section de sommet (23), et
    dans laquelle la partie d'extrémité (3) a un diamètre supérieur à la section de sommet (23) qui forme un épaulement depuis la surface de la première partie conique (2) ;
    caractérisée en ce que :
    les deux rouleaux façonnés (1) sont positionnés avec leurs axes de rotation (Z) alignés et avec les parties d'extrémité (3) se regardant l'une l'autre, et sont positionnés de sorte que les côtés supérieurs (T1, T2) de l'élément profilé sont en contact avec la partie conique (2) ;
    les parties d'extrémité (3) sont disposées pour venir en contact avec les bords d'extrémité des côtés supérieurs (T1, T2).
  2. Unité de fonctionnement selon la revendication 1, comportant des moyens de réglage pour autoriser le mouvement des rouleaux façonnés (1) dans une ou plusieurs directions horizontales et/ou dans une direction verticale.
  3. Unité de fonctionnement selon la revendication 1, comportant un rouleau inférieur (11), disposé pour venir en contact avec le côté inférieur (B) de l'élément profilé.
  4. Unité de fonctionnement selon la revendication 1, comportant deux rouleaux latéraux (12, 13), disposés pour venir en contact avec les côtés (S1, S2) de l'élément profilé.
  5. Unité de fonctionnement selon la revendication 4, dans laquelle les rouleaux latéraux (S1, S2) sont coniques.
  6. Unité de fonctionnement selon la revendication 4, dans laquelle les rouleaux latéraux (S1, S2) sont cylindriques, avec un axe de rotation incliné et réglable par rapport à l'axe vertical.
  7. Unité de fonctionnement selon la revendication 1, dans laquelle la partie d'extrémité (3) est conique et raccordée à la partie conique (2) au niveau de la section de sommet (23).
  8. Unité de fonctionnement selon la revendication 7, dans laquelle l'angle inclus entre les effilements de la partie conique (2) et de la partie d'extrémité (3) est supérieur ou égal à un angle droit.
  9. Procédé pour profiler un élément profilé, dans lequel l'élément profilé présente une section transversale formée par un côté inférieur (B), deux côtés (S1, S2) et deux côtés supérieurs (T1, T2) inclinés vers le haut de sorte à converger les uns vers les autres, comprenant les étapes suivantes :
    faire avancer l'élément profilé vers une ligne de profilage qui comprend une unité de fonctionnement avec deux rouleaux façonnés (1), comportant chacun une partie conique (2) et une partie d'extrémité (3), concentriques par rapport à un axe de rotation (Z) ;
    dans lequel la partie conique (2) est munie d'une section de sommet (23) où le diamètre du rouleau est minimal, dans lequel la partie d'extrémité (3) est raccordée à la partie conique (2) au niveau de la section de sommet (23), et dans lequel la partie d'extrémité (3) a un diamètre supérieur à la section de sommet (23) qui forme un épaulement depuis la surface de la première partie conique (2) ;
    dans lequel les parties d'extrémité (3) sont disposées pour venir en contact avec les bords d'extrémité des côtés supérieurs (T1, T2) ;
    dans lequel l'élément profilé avance vers l'unité de fonctionnement avec les côtés supérieurs placés en contact avec la partie conique (2) et avec les bords des côtés supérieurs (T1, T2) placés en contact avec les parties d'extrémité (3) ;
    caractérisé en ce que les deux rouleaux façonnés (1) sont positionnés avec leurs axes de rotation (Z) alignés et avec les parties d'extrémité (3) se regardant l'une l'autre, et sont positionnés de sorte que les côtés supérieurs (T1, T2) de l'élément profilé sont en contact avec la partie conique (2).
  10. Procédé selon la revendication 9, dans lequel l'unité de fonctionnement comprend un rouleau inférieur (11), disposé pour venir en contact avec le côté inférieur (B) de l'élément profilé, et dans lequel l'élément profilé avance vers l'unité de fonctionnement avec le côté inférieur (B) placé en contact avec le rouleau inférieur (11).
  11. Procédé selon la revendication 9, dans lequel l'unité de fonctionnement comprend deux rouleaux latéraux (12, 13), disposés pour venir en contact avec les côtés (S1, S2) de l'élément profilé, et dans lequel l'élément profilé avance vers l'unité de fonctionnement avec chaque côté (S1, S2) placé en contact avec un rouleau latéral (12, 13).
EP18157664.6A 2017-04-11 2018-02-20 Dispositif pour une ligne de profilage Active EP3388162B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102017000039822A IT201700039822A1 (it) 2017-04-11 2017-04-11 Rullo sagomato per una linea profilatrice

Publications (2)

Publication Number Publication Date
EP3388162A1 EP3388162A1 (fr) 2018-10-17
EP3388162B1 true EP3388162B1 (fr) 2020-04-01

Family

ID=59811745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18157664.6A Active EP3388162B1 (fr) 2017-04-11 2018-02-20 Dispositif pour une ligne de profilage

Country Status (6)

Country Link
US (1) US20180290192A1 (fr)
EP (1) EP3388162B1 (fr)
JP (1) JP2018176273A (fr)
BR (1) BR102018005227A2 (fr)
IT (1) IT201700039822A1 (fr)
MX (1) MX2018003260A (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660399A (en) * 1985-06-03 1987-04-28 Suter Frank L Mobile roll-forming machine
FI965070A0 (fi) * 1996-12-17 1996-12-17 Samesor Smt International Oy En utrustning foer rullforming av balkprodukter foer metallplaoten
US6148654A (en) * 1997-10-15 2000-11-21 Asc Machine Tools, Inc. Convertible roll forming apparatus
US6938389B2 (en) * 2001-10-03 2005-09-06 Steel Stitch Corporation Roll formed staple-in awning frame and method
JP3975783B2 (ja) * 2002-03-04 2007-09-12 株式会社デンソー ロール成形方法及び装置
ITVE20050059A1 (it) * 2005-12-01 2007-06-02 Stam S P A Macchina profilatrice.-
IT1394852B1 (it) * 2009-07-21 2012-07-20 Olimpia 80 Srl Macchina a geometria lineare variabile per formare in continua tubi quadri

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
MX2018003260A (es) 2018-11-09
US20180290192A1 (en) 2018-10-11
BR102018005227A2 (pt) 2018-12-18
EP3388162A1 (fr) 2018-10-17
JP2018176273A (ja) 2018-11-15
IT201700039822A1 (it) 2018-10-11

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