EP3287208B1 - Dispositif pour la formation d'une feuille métallique - Google Patents

Dispositif pour la formation d'une feuille métallique Download PDF

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Publication number
EP3287208B1
EP3287208B1 EP17182448.5A EP17182448A EP3287208B1 EP 3287208 B1 EP3287208 B1 EP 3287208B1 EP 17182448 A EP17182448 A EP 17182448A EP 3287208 B1 EP3287208 B1 EP 3287208B1
Authority
EP
European Patent Office
Prior art keywords
machine
roller
metal sheet
forming mold
gaps
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.)
Active
Application number
EP17182448.5A
Other languages
German (de)
English (en)
Other versions
EP3287208A1 (fr
Inventor
Cristoforo GUINDANI
Stefano Ricci
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.)
Steel Color SpA
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Steel Color SpA
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Publication date
Application filed by Steel Color SpA filed Critical Steel Color SpA
Publication of EP3287208A1 publication Critical patent/EP3287208A1/fr
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Publication of EP3287208B1 publication Critical patent/EP3287208B1/fr
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Classifications

    • 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
    • B21H8/005—Embossing sheets or rolls
    • 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
    • B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
    • B21D13/04—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/0047—Machines or apparatus for embossing decorations or marks, e.g. embossing coins by rolling

Definitions

  • the invention relates to the sector of machines for processing metal building and cladding materials.
  • the invention relates to a machine that implements a method for shaping a metal sheet to be used as finish or cladding for inner and outer walls of buildings or furnishings and design installations.
  • Said calender comprises a first and a second roller, both made of metal and motorized, having the respective surfaces processed in a complementary manner.
  • the surfaces of said rollers each comprise a complementary pattern, raised on the first roller and depressed on the second roller, i.e., with coupling of male-female type.
  • the passage between the rollers of the strip of sheet metal causes the reproduction, on the two faces of the same plate, of the pattern characterizing the decoration to be obtained.
  • the document GB 2 019 288 A which forms the basis for the preamble of claim 1, discloses a machine for shaping a metal sheet comprising:
  • Said first roller is adapted to exert a pressing force on said metal sheet arranged on said supporting surface of said forming mold, so that said elastically yielding material is compressed as a result of the pressure and expands only at said gaps deforming the metal sheet below.
  • Said motorized drive means comprise a supporting surface onto which said forming mold, said metal sheet and said plate made of an elastically yielding material are loaded, drawn by means of motorized belts along the roller conveyors.
  • the machine operates in steps, with the loaded supporting surface that advances under the calender in alternating directions.
  • the object of the invention is to eliminate these drawbacks, producing an inexpensive but efficient machine, that is easy to prepare and can be modified to diversify production, capable of processing metal sheets having any type of preliminary surface finish within the scope of known aesthetic treatments of the stainless steel sheets, implementing a method that allows sheets with countless possibilities of surface decorations and treatments to be obtained.
  • said at least one outer layer of said first roller is made of rubber and said second roller is made of steel.
  • said gaps have an irregular shape and are distributed unevenly on the supporting surface of said forming mold.
  • said gaps are isolated from one another.
  • said forming mold comprises areas of reduced thickness adapted to define said gaps of said supporting surface and to allow expansion of said elastically yielding material.
  • said forming mold comprises shaped holes, adapted to define said gaps.
  • said machine comprises centring means for said forming mold or for said abutment panel.
  • said machine comprises adjustment means of the mutual distance between said first and said second roller, adapted to adjust the pressing force exerted by said first roller on said metal sheet.
  • the method implemented by the machine according to the invention for shaping a metal sheet comprises the following steps:
  • the invention presents numerous advantages.
  • Said first and said second rollers do not require special and costly processing of their surfaces.
  • the task of shaping the metal sheet is entrusted to the forming mold alone, while the rollers have the sole function of exerting a suitable pressing force.
  • the machine allows the processing of pre-cut sheets and not strips of sheet metal wound in coils, as used in conventional machines, but always maintaining a flowing movement, which favours productivity.
  • the feed and subsequent recovery of the metal sheet on motorized roller conveyors also allows the machine to operate in a single direction, unlike the machine described in the cited prior art document GB 2 019 288 A .
  • the single direction allows the machine to be arranged in line with other machines positioned upstream or downstream, further speeding up the whole production process.
  • the abutment panel on which the forming mold rests advantageously ensures a uniform a resistance force to the pressure of the upper roller.
  • Said centring means guide said forming mold, or said abutment panel, and consequently the metal sheet loaded thereon, with precision into the calender, to ensure perfect alignment with the rollers and thus obtain the same processing reproduced identically on all the metal sheets processed in series.
  • centring means are particularly advantageous when the forming mold has gaps of irregular shape and arrangement.
  • the pressure of the calender could cause torsion and/or rotation of the forming mold or of the abutment panel and therefore incorrect shaping of the metal sheet. Due to the centring means, this risk is eliminated: in fact, said centring means allow perfect orthogonality to be maintained between the direction of feed of the metal sheet and the pressure line exerted thereon by the calender.
  • the adjustment means that adjust the mutual distance between the two rollers allow the machine to be adapted also as a function of the thickness of the metal sheet to be deformed.
  • the machine 1 for shaping a metal sheet 2 essentially comprises:
  • Said metal sheet 2 to be processed can have various thicknesses and various surface finishes, i.e., it can be satin-finished, polished, mirror polished, electrolytically coloured, coloured by means of PVD, etc.
  • said calender 4 is illustrated.
  • Said first roller 14 is arranged above and comprises at least an outer layer 14' made of an elastically yielding material.
  • Said outer layer 14' is, for example, made of rubber or of a suitable elastic polymer and has a smooth surface.
  • Said first roller 14 is connected to first motor means 5'.
  • Said second roller 24 is arranged below, is made of steel and comprises a rigid and smooth surface adapted to act as abutment surface for said first roller 14.
  • Said second roller 24 is connected to second motor means 5".
  • said second roller 24 could be idle and therefore not connected to corresponding motor means.
  • Said first roller 14 and said second roller 24 are mounted on a frame 16 resting on the ground.
  • Said frame 16 comprises lateral shoulders 17' and 17" provided with adjustment means of the mutual distance between said first 14 and said second 24 roller, consequently adapted to adjust the pressing force of said first roller 14 on said metal sheet 2.
  • Said adjustment means comprise two actuators 12', 12", for example of the screw/nut type, each acting on a support of said roller 14, operated by a gear motor 18, by means of a drive system with mechanical rotary joint 19.
  • FIG. 3 an example of a forming mold 7 is illustrated.
  • the surface 7' of said mold 7 on which, in use, said metal sheet 2 rests comprises gaps 8.
  • gaps 8 are produced by means of shaped holes that involve the whole of the thickness of the mold 7.
  • said gaps 8 can be defined by areas of the mold having reduced thickness, so as to create valleys with respect to the supporting surface of said metal sheet 2.
  • said gaps 8 have an irregular shape and are distributed unevenly on the supporting surface 7' of said forming mold 7.
  • said gaps design shapes closed and separated from one another, not connected to one another. Therefore, they are discrete shapes.
  • said forming mold 7 can rest directly on said feed 3 and recovery 6 means, and said calender 4 be in direct contact with said second lower roller 24.
  • said machine 1 comprises an abutment panel 10 on which said forming mold 7 rests and said abutment panel 10 is also moved by means of said feed 3 and recovery 6 means, it too translating horizontally inside said calender 4.
  • Figs. 5 and 6 illustrate the feed means 3 of the sheet to be processed, which are similar to the recovery means 6.
  • Said feed means 3, and also said recovery means 6, comprise a motorized roller conveyor 13, on which said forming mold 7 is transported.
  • Said roller conveyor 13 is moved by a drive chain 23 connected to proper motor means 33.
  • centring means for said forming mold 7 or said abutment panel 10.
  • Said centring means comprise centring rollers 11 with vertical axis arranged on two parallel rows along the edges of said roller conveyors 13, longitudinally to the direction of feed of the mold 7.
  • the method implemented by the machine according to the invention for shaping a metal sheet 2 essentially comprises the steps of:
  • said step of applying a pressure on said metal sheet 2 resting on said forming mold 7 takes place by means of said calender 4.
  • said first roller 14 is adapted to exert a pressing force on said metal sheet 2 arranged on said supporting surface 7' of said forming mold 7, so that said elastically yielding material 14' is compressed as a result of the pressure and expands only at said gaps 8 deforming the metal sheet 2 below.
  • the holes obtained on the forming mold 7 allow expansion of said elastically yielding material 14' that pushes the metal sheet 2 underneath it, deforming it, or shaping it.
  • the metal sheet obtained has in substance raised deformed areas that reproduce, in a complementary manner, the holes of the forming mold.
  • Adjustment of the distance between the rollers 14 and 24 by means of the adjustment means allows the pressing force exerted on the sheet to be increased or decreased, obtaining, with the same thickness, more or less prominent peaks, or adapting processing based on the thickness of the sheet to be shaped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Powder Metallurgy (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Press Drives And Press Lines (AREA)

Claims (11)

  1. Dispositif (1) pour la formation d'une feuille métallique (2) comprenant :
    - des moyens d'alimentation (3) d'une feuille de métal (2) à traiter ;
    - une calandre (4) comprenant un premier rouleau (14) et un second rouleau (24) ;
    - des moyens moteurs (5', 5") adaptés pour actionner au moins l'un desdits premier (14) et second (24) rouleaux ;
    - des moyens de récupération (6) de la feuille métallique traitée (2) ;
    - un moule de formage (7) ayant une surface de support (7') pour ladite feuille métallique (2), où ladite surface de support (7') comprend des interstices (8),
    où :
    - ledit second rouleau (24) comprend une surface faite d'un matériau rigide ;
    caractérisé par le fait que
    - ledit premier rouleau (14) comprend au moins une couche extérieure (14') faite d'un matériau élastiquement déformable, ayant une surface lisse, où
    - ledit premier rouleau (14) est adapté pour exercer une force de pression sur ladite feuille métallique (2) disposée sur ladite surface de support (7') dudit moule de formage (7), de sorte que ledit matériau élastiquement déformable est comprimé sous l'effet de la pression et se dilate uniquement au niveau desdits espaces (8) déformant la feuille métallique (2) en dessous,
    - lesdits moyens d'alimentation (3) et de récupération (6) comprennent chacun un convoyeur à rouleaux motorisés (13) sur lequel ledit moule de formage (7) est transporté pendant l'utilisation ;
    - ledit dispositif comprend un panneau de butée (10) sur lequel ledit moule de formage (7) repose pendant l'utilisation et ledit panneau de butée (10) est déplacé pendant l'utilisation au moyen desdits moyens d'alimentation (3) et de récupération (6).
  2. Dispositif (1) selon la revendication 1, caractérisé par le fait que ladite une couche extérieure (14') au minimum dudit premier rouleau (14) est faite de caoutchouc.
  3. Dispositif (1) selon la revendication 1, caractérisé par le fait que ledit second rouleau (24) est fait d'acier.
  4. Dispositif (1) selon la revendication 1, caractérisé par le fait que lesdits interstices (8) ont une forme irrégulière.
  5. Dispositif (1) selon la revendication 1, caractérisé par le fait que lesdits interstices (8) sont répartis de manière inégale sur la surface de support (7') dudit moule de formage (7).
  6. Dispositif (1) selon la revendication 5, caractérisé par le fait que lesdits interstices (8) sont isolés les uns des autres.
  7. Dispositif (1) selon la revendication 1, caractérisé par le fait que ledit moule de formage (7) comprend des zones d'épaisseur réduite adaptées pour définir lesdits interstices (8) de ladite surface de support (7') et pour permettre l'expansion dudit matériau élastiquement déformable.
  8. Dispositif (1) selon la revendication 1, caractérisé par le fait que ledit moule de formage (7) comprend des trous façonnés adaptés pour définir lesdits interstices (8).
  9. Dispositif (1) selon la revendication 1, caractérisé par le fait qu'il comprend des moyens de centrage (11) pour ledit moule de formage (7).
  10. Dispositif (1) selon la revendication 1, caractérisé par le fait qu'il comprend des moyens de centrage (11) pour ledit panneau de butée (10).
  11. Dispositif (1) selon la revendication 1, caractérisé par le fait qu'il comprend des moyens d'ajustement (12) de la distance mutuelle entre ledit premier (14) et ledit second (24) rouleau, adaptés pour ajuster la force de pression exercée par ledit premier rouleau (14) sur ladite feuille métallique (2).
EP17182448.5A 2016-07-28 2017-07-20 Dispositif pour la formation d'une feuille métallique Active EP3287208B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102016000079293A IT201600079293A1 (it) 2016-07-28 2016-07-28 Macchina e procedimento per sagomare una lastra metallica e lastra cosi’ ottenuta

Publications (2)

Publication Number Publication Date
EP3287208A1 EP3287208A1 (fr) 2018-02-28
EP3287208B1 true EP3287208B1 (fr) 2022-07-13

Family

ID=57610202

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17182448.5A Active EP3287208B1 (fr) 2016-07-28 2017-07-20 Dispositif pour la formation d'une feuille métallique

Country Status (6)

Country Link
EP (1) EP3287208B1 (fr)
ES (1) ES2924492T3 (fr)
HU (1) HUE059524T2 (fr)
IT (1) IT201600079293A1 (fr)
PL (1) PL3287208T3 (fr)
PT (1) PT3287208T (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB113751A (fr) *
GB330659A (en) * 1929-03-19 1930-06-19 Ludwig Theodore Gmach Improvements in processes for embossing designs or lettering on metal
US2075286A (en) * 1934-11-03 1937-03-30 Jackes Evans Mfg Company Sheet metal product
US2280359A (en) * 1939-06-10 1942-04-21 Curtiss Wright Corp Sheet metal forming apparatus
GB1090116A (en) * 1964-04-07 1967-11-08 British Aluminium Co Ltd Improvements in or relating to the manufacture of patterned metal sheet
US4257251A (en) * 1978-03-30 1981-03-24 Flight Furniture Pty. Ltd. Metal forming process

Also Published As

Publication number Publication date
IT201600079293A1 (it) 2018-01-28
ES2924492T3 (es) 2022-10-07
PL3287208T3 (pl) 2022-09-26
HUE059524T2 (hu) 2022-11-28
PT3287208T (pt) 2022-08-02
EP3287208A1 (fr) 2018-02-28

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