EP4212301A1 - Flammenmaschine zur verarbeitung von stücken aus steinmaterial - Google Patents

Flammenmaschine zur verarbeitung von stücken aus steinmaterial Download PDF

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Publication number
EP4212301A1
EP4212301A1 EP23151236.9A EP23151236A EP4212301A1 EP 4212301 A1 EP4212301 A1 EP 4212301A1 EP 23151236 A EP23151236 A EP 23151236A EP 4212301 A1 EP4212301 A1 EP 4212301A1
Authority
EP
European Patent Office
Prior art keywords
rollers
flaming
machine
pieces
flaming machine
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.)
Pending
Application number
EP23151236.9A
Other languages
English (en)
French (fr)
Inventor
Mariano LOVATO
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.)
Lovato International Srl
Original Assignee
Lovato International Srl
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 Lovato International Srl filed Critical Lovato International Srl
Publication of EP4212301A1 publication Critical patent/EP4212301A1/de
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/006—Artificial ageing of stones; Providing stones with an antique appearance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
    • B28D7/02—Accessories specially adapted for use with machines or devices of the preceding groups for removing or laying dust, e.g. by spraying liquids; for cooling work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
    • B28D7/04—Accessories specially adapted for use with machines or devices of the preceding groups for supporting or holding work or conveying or discharging work

Definitions

  • the present invention relates to a flaming machine for stone materials.
  • Flaming is a processing technique used to change the surface condition of stone materials by altering their appearance and roughness.
  • Flaming is performed by subjecting the surface of the piece to a sudden thermal shock, which causes a high temperature gradient to be established in a thin surface layer a few millimeters thick.
  • flaming is performed on the exposed surfaces of stone elements, with the purpose of simulating their natural aging and thus making them pleasing to the eye and to the touch.
  • flaming is done by exposing the surface to be treated to the heat of a flame, such as that of an oxyacetylene torch.
  • the surface may optionally be sprayed with water before and after contact with the flame, depending on the type of effect desired and the type of material to be treated.
  • the distance of the flame from the surface to be treated must be kept constant during the flaming phase.
  • the operation can be performed by hand by an operator, or by automatic machines.
  • Such machines usually comprise a horizontal work surface consisting of rotating rollers, on which the pieces of stone material are placed and moved.
  • the surface that is flamed is the surface opposite the surface that rest on the work/resting surface or roller conveyor.
  • the piece transits below a station where there are one or more burners, which, positioned at a fixed distance from the surface to be flamed and previously regulated, hit the piece with theirs flame.
  • the position of the flame, after being regulated, remains fixed with respect to the surface and resting plane, so it cannot be adjusted to changes in part thickness.
  • the pieces in order to carry out flaming, the pieces must have the resting surface to the work/resting surface and the opposite surface to be flamed as even and parallel as possible.
  • Aim of the present invention is to provide a flaming machine for stone materials capable of treating pieces having irregular and non-flat surfaces, such as in the absence of regularity and parallelism between surfaces, by being able to maintain a constant distance between the flame and the surface to be treated, regardless of the state of the other surfaces of the piece.
  • Another aim of the invention is to provide a machine for effectively performing flaming operations of stone materials having irregular surfaces in a simple and economical manner by virtue of the other advantages achieved.
  • a flaming machine 100 is shown a preferred embodiment of a flaming machine 100 according to the present invention.
  • the flaming machine 100 operates by moving the pieces to be processed (not shown) along a main direction of a work surface 1.
  • the work surface 1 can be schematized as a horizontal plane on which the pieces rest and are moved to be processed.
  • the flaming machine 100 comprises a plurality of rollers 3 that are substantially contained in the work surface 1.
  • rollers 3 are cylinders substantially parallel to each other, fixed in correspondence of at least one of their ends and rotatable about their own axis.
  • the rollers 3 are arranged close together, so as to support and facilitate, by their concordant rotation, the translation of the pieces placed on them.
  • the rollers 3 are rotatably fixed at at least one end thereof, to a frame 31.
  • each roller 3 In correspondence of one of their ends, to each roller 3 is externally fixed a toothed crown 32.
  • Each toothed crown 32 is intended to gear a chain 33, or other means of transmitting motion, which in turn is driven by a toothed wheel 34 and a motor 35.
  • the motion of the rollers can be achieved by any equivalent means, comprising the using of all of the rollers or part of them independently, and/or electrically.
  • the flaming machine 100 exposes the pieces to a heat source, for example, a flame from a torch 2 located below the work surface 1.
  • a heat source for example, a flame from a torch 2 located below the work surface 1.
  • the torch or heat source 2 is fixed to a support 21, placed so in such a way that, when the flaming machine is in use, the flame produced by the torch 2 itself is directed toward the work surface 1.
  • the support 21 is movable slidingly fixed along a guide 22 and is movable along the guide 22 itself.
  • the guide 22 is oriented in a direction substantially parallel to the rollers 3 to allow the flame produced by the torch 2 to act on the entire possible resting area for the pieces.
  • the flame produced by torch 2 is oriented so as to hit the bottom surface of the pieces carried by rollers 3.
  • the heat source is necessarily positioned above the pieces, and the distance between the stone surface to be treated and the heat source itself must remain nearly constant during heat exposure.
  • rollers 3 are placed according to a predetermined distance from each other, such that the pieces to be treated can be supported and carried, but also such that spaces are provided for the flame produced by the torch 2 to act on the pieces.
  • rollers 3 as well as the pieces to be treated, are also exposed to the heat of the flame.
  • the rollers are generally produced from metal, such as stainless steel, or more or less alloyed steel, but they can also be produced from much more heat-resistant materials such as ceramics or others.
  • the temperature of an oxyacetylene flame can reach and exceed 3000 °C.
  • the flaming machine 100 provides that the rollers 3 are hollow.
  • the cavity 4 of the rollers 3 is through, and runs along the axis direction in each roller from an end to the other.
  • a suitable cooling fluid for example, water.
  • a pipe 41 is fixed at the ends of each roller 3 for supplying the cooling fluid from a reservoir (or any source), and/or for sending it to a different roller 3.
  • plates 5 are installed in a lateral position relative to the work surface 1, at the frames 31.
  • These plates 5 are oriented in a substantially vertical manner, perpendicular to the work surface 1 and the rollers 3 and/or parallel to the direction of advancement of said pices.
  • Plates 5 act as a barrier to protect against flame propagation from the torch 2 below work surface 1.
  • protections can be made of suitable materials to interrupt the heat, and/or they can be hollowed out to allow the circulation of cooling fluids.
  • the pieces to be processed are loaded onto the flaming machine 100 with the part to be flamed facing the rollers 3, and they advance conveyed by a feed system, such as a conveyor belt or other, until they reach the rollers 3, which rotate and advance the pieces toward the flaming zone.
  • a feed system such as a conveyor belt or other
  • an alternative pushing system may be comprised.
  • Rollers 3 rotate thanks to the drive apparatus comprising motor 35, gear wheel 34, and chain 33, which is connected with crown 32 of each roller 3.
  • the rollers can also rotate independently when driven by independent motors outside or inside the rollers.
  • the pieces are supported on the rollers 3 by means of their bottom surface, which is flat and even, so the heat produced by the torch 2 invests the bottom surface itself in a regular and uniform manner.
  • Flaming machines according to prior art are not capable of operating such a procedure, since the heat source is necessarily placed above the work surface.
  • the torch 2 is moved cyclically from the support 21 along the guide 22, transversely to the direction of part feed, so that it also operates on pieces positioned anywhere along the entire length of the rollers 3.
  • the heat source can be arranged to make a cyclic motion, perpendicular to the surface to be flamed of the piece.
  • the rollers can optionally discharge the processed workpieces to a chute 6.
  • the surface to be treated can be subjected to hydration, such as through nozzles or by immersion in dedicated vessels, depending on the requirements of the material and the result to be obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Compositions Of Oxide Ceramics (AREA)
EP23151236.9A 2022-01-12 2023-01-12 Flammenmaschine zur verarbeitung von stücken aus steinmaterial Pending EP4212301A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102022000000338A IT202200000338A1 (it) 2022-01-12 2022-01-12 Fiammatrice per materiali lapidei

Publications (1)

Publication Number Publication Date
EP4212301A1 true EP4212301A1 (de) 2023-07-19

Family

ID=80928973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23151236.9A Pending EP4212301A1 (de) 2022-01-12 2023-01-12 Flammenmaschine zur verarbeitung von stücken aus steinmaterial

Country Status (2)

Country Link
EP (1) EP4212301A1 (de)
IT (1) IT202200000338A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3251394A (en) * 1963-12-10 1966-05-17 Merle L Thorpe Brush type high velocity air-fuel burner
WO1990013406A1 (en) * 1989-05-03 1990-11-15 Universite De Sherbrooke Method and apparatus for treating a surface of granite with a high temperature plasma jet
DE3933843A1 (de) * 1989-10-10 1991-04-18 Hofmann Hermann Verfahren und vorrichtung zur bearbeitung von steinoberflaechen durch brennen oder stocken
EP2105275A2 (de) * 2008-03-28 2009-09-30 MAEMA S.r.l. Verfahren und Mehrfachwerkzeugvorrichtung zum Flammen der Oberflächen von Produkten aus Stein oder steinartigen Materialen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3251394A (en) * 1963-12-10 1966-05-17 Merle L Thorpe Brush type high velocity air-fuel burner
WO1990013406A1 (en) * 1989-05-03 1990-11-15 Universite De Sherbrooke Method and apparatus for treating a surface of granite with a high temperature plasma jet
DE3933843A1 (de) * 1989-10-10 1991-04-18 Hofmann Hermann Verfahren und vorrichtung zur bearbeitung von steinoberflaechen durch brennen oder stocken
EP2105275A2 (de) * 2008-03-28 2009-09-30 MAEMA S.r.l. Verfahren und Mehrfachwerkzeugvorrichtung zum Flammen der Oberflächen von Produkten aus Stein oder steinartigen Materialen

Also Published As

Publication number Publication date
IT202200000338A1 (it) 2023-07-12

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