EP3287208B1 - Vorrichtung zum formen einer metallplatte - Google Patents

Vorrichtung zum formen einer metallplatte 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
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EP
European Patent Office
Prior art keywords
machine
roller
metal sheet
forming mold
gaps
Prior art date
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Active
Application number
EP17182448.5A
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English (en)
French (fr)
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EP3287208A1 (de
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
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Publication of EP3287208A1 publication Critical patent/EP3287208A1/de
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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. Vorrichtung (1) zum Formen einer Metallplatte (2), umfassend:
    - Mittel zur Einspeisung (3) einer Metallplatte (2), die zu bearbeiten ist;
    - einen Kalander (4), umfassend eine erste Walze (14) und eine zweite Walze (24);
    - Motormittel (5', 5"), die geeignet sind, mindestens eine der besagten ersten (14) und zweiten (24) Walze in Betrieb zu setzen;
    - Mittel zur Rückgewinnung (6) der bearbeiteten Metallplatte (2);
    - eine formgebende Form (7) mit einer Stützfläche (7') für die besagte Metallplatte (2), wobei die besagte Stützfläche (7') Aussparungen (8) umfasst
    wobei:
    - die besagte zweite Walze (24) eine Oberfläche aus einem starren Material umfasst; dadurch gekennzeichnet, dass
    - die besagte erste Walze (14) mindestens eine äußere Schicht (14') aus einem elastisch nachgebenden Material mit glatter Oberfläche umfasst, wobei
    - die besagte erste Walze (14) geeignet ist, eine Druckkraft auf die besagte Metallplatte (2) auszuüben, die auf der besagten Stützfläche (7') der besagten formgebenden Form angeordnet ist, so dass das besagte elastisch nachgebende Material infolge des Drucks komprimiert wird und sich nur an den besagten Aussparungen (8) ausdehnt und die Metallplatte (2) darunter verformt,
    - die besagten Einspeisungs- (3) und Rückgewinnungsmittel (6) jeweils ein motorisiertes Walzentransportband (13) umfassen, auf dem die besagte formgebende Form (7) während des Gebrauchs transportiert wird;
    - wobei die besagte Vorrichtung eine Auflagerplatte (10) umfasst, auf der die besagte formgebende Form (7) während des Gebrauchs ruht, und die besagte Auflagerplatte (10) während des Gebrauchs mittels der besagten Einspeisungs- (3) und Rückgewinnungsmittel (6) bewegt wird.
  2. Eine Vorrichtung (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die besagte zumindest eine äußere Schicht (14') der besagten ersten Walze (14) aus Gummi hergestellt ist.
  3. Eine Vorrichtung (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die besagte zweite Walze (24) aus Stahl hergestellt ist.
  4. Eine Vorrichtung (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die besagten Aussparungen (8) eine unregelmäßige Form aufweisen.
  5. Eine Vorrichtung (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die besagten Aussparungen (8) ungleichmäßig auf der Stützfläche (7') der besagten formgebenden Form (7) verteilt sind.
  6. Eine Vorrichtung (1) gemäß Anspruch 5, dadurch gekennzeichnet, dass die besagten Aussparungen (8) voneinander isoliert sind.
  7. Eine Vorrichtung (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die besagte formgebende Form (7) Bereiche mit verringerter Dicke aufweist, die geeignet sind, die besagten Aussparungen (8) der besagten Stützfläche (7') zu definieren und die Ausdehnung des besagten elastisch nachgebenden Materials zu ermöglichen.
  8. Eine Vorrichtung (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die besagte formgebende Form (7) geformte Löcher umfasst, die geeignet sind, die besagten Aussparungen (8) zu definieren.
  9. Eine Vorrichtung (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass sie Zentriermittel (11) für die besagte formgebende Form (7) umfasst.
  10. Eine Vorrichtung (1) gemäß Anspruch 11, dadurch gekennzeichnet, dass sie Zentriermittel (11) für die besagte Auflagerplatte (10) umfasst.
  11. Eine Vorrichtung (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass sie Mittel (12) zur Einstellung des gegenseitigen Abstands zwischen der besagten ersten (14) und der besagten zweiten (24) Walze umfasst, die geeignet sind, die von der besagten ersten Walze (14) auf die besagte Metallplatte (2) ausgeübte Druckkraft einzustellen.
EP17182448.5A 2016-07-28 2017-07-20 Vorrichtung zum formen einer metallplatte Active EP3287208B1 (de)

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 (de) 2018-02-28
EP3287208B1 true EP3287208B1 (de) 2022-07-13

Family

ID=57610202

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17182448.5A Active EP3287208B1 (de) 2016-07-28 2017-07-20 Vorrichtung zum formen einer metallplatte

Country Status (6)

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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB113751A (de) *
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 (de) 2018-02-28

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