EP2695713A1 - Verfahren und Anlage zur Oberflächenbehandlung mit Wasserstrahl von Elementen aus steinigem Material - Google Patents

Verfahren und Anlage zur Oberflächenbehandlung mit Wasserstrahl von Elementen aus steinigem Material Download PDF

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Publication number
EP2695713A1
EP2695713A1 EP13003656.9A EP13003656A EP2695713A1 EP 2695713 A1 EP2695713 A1 EP 2695713A1 EP 13003656 A EP13003656 A EP 13003656A EP 2695713 A1 EP2695713 A1 EP 2695713A1
Authority
EP
European Patent Office
Prior art keywords
nozzles
jets
worked
plant
products
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.)
Granted
Application number
EP13003656.9A
Other languages
English (en)
French (fr)
Other versions
EP2695713B1 (de
Inventor
Claudio 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.)
MAEMA Srl
Original Assignee
MAEMA 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 MAEMA Srl filed Critical MAEMA Srl
Priority to PL13003656T priority Critical patent/PL2695713T3/pl
Publication of EP2695713A1 publication Critical patent/EP2695713A1/de
Application granted granted Critical
Publication of EP2695713B1 publication Critical patent/EP2695713B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • water jets of high strength and high concentration may be directed to the surface, to act like a tool bit, to form particularly sharp cuts.
  • the plant 1 also comprises feed means 5 for feeding the nozzles 4, 4', 4",... with a high-pressure liquid, preferably water with no abrasive material therein, adapted to generate high-pressure jets J to make cuts on the items P being worked.
  • a high-pressure liquid preferably water with no abrasive material therein
  • the head 3 is also associated with first drive means 6 for forward movement thereof in a longitudinal direction X relative to the support base 2, and hence relative to the items P thereon.
  • These first drive means 6 may be designed to longitudinally transfer the head 3 in the longitudinal direction X, like in the illustrated configuration, and/or may be associated with the support base 2, e.g. via a roller bed or a conveyor belt, for longitudinally transferring the item P.
  • FIGs. 2 to 5 show three different operating conditions, in which the nozzles 4 are aligned in a direction W coplanar with the transverse direction Y but inclined thereto at three different angles ⁇ , ⁇ , ⁇ , to change their projection relative to the vertical plane ⁇ .
  • the adjustment means 7 may act on the rotating shaft 22 to promote its rotation about the axis of rotation R, which will change the projection of the pitch p and the relative distance d between cuts. Furthermore, they may be designed to also allow the shaft 22 to rotate by 360°, as schematically shown in Fig. 14 .
  • the nozzles 4 are mounted to the head 3 via respective sections 25 that are movable relative to the elongate body 21 along its main extension axis L.
  • the adjustment means 7 may comprise fourth drive means 28 for imparting an inclination ⁇ to the axis of rotation R relative to the vertical, to change the distance of the nozzles from the support base 2.
  • the fourth drive means 28 may be associated directly with the head or with the rotating shaft 22 or the frame 10.
  • the nozzles 4 of the central head 3 may have an outlet 29 with a maximum diameter ⁇ preferably ranging from 0,15mm to 0,60 mm and more preferably from 0,20 mm to 0,40 mm, e.g. of about 0,30 mm, to obtain jets J of small sizes.
  • the outlets 29 may be of any shape, e.g. of circular, elliptical, square, rectangular, polygonal or the like shape, without limitation, to obtain cuts of various shapes.
  • the deflector members 31 may be of mechanical or electromechanical type and comprise a plate 32, which is designed to move between an inoperative position, external to the relevant jet J and an operative position in which the plate 32 at least partially faces the outlet 29 of the corresponding nozzle 4, to at least partially intercept its jet J and reduce or substantially eliminate its impact pressure.
  • the pressure regulator means 30 may be associated with the feed means 5 and comprise a plurality of electronically controlled valves operatively connected to each nozzle 4 for selective adjustment of their feeding pressure.
  • the feed means 5 may be adapted to impart an electric charge of predetermined polarity to the water to be fed to the nozzles 4, and the pressure regulator means 30 may be in turn adapted to generate an electric or electromagnetic field at the nozzles 4, for deflecting the electrically charged jet J.
  • the feed means 5 may be designed to charge the water to be fed to the nozzles 4 with a polarizing substance, such as an appropriately charged salt, which is adapted to interact with the downstream generated field to create a repulsive electric or electromagnetic force.
  • a polarizing substance such as an appropriately charged salt
  • the pressure regulator means 30 may comprise fifth drive means, not shown, for selectively rotating the elongate body 21 about its main extension axis L and/or one or more of the nozzles 4, as schematically shown in Fig. 18 , thereby allowing the jets J to be inclined to the vertical.
  • drive means may include mechanical, electromechanical, hydraulic, oil-hydraulic, pneumatic, manual or automated actuators or the like, possibly controllable in an independent manner, and with procedures that are typical for this type of plants, and known to those skilled in the art, that will not have to be described herein in further detail.
  • the method basically comprises a step a) of providing a moving or stationary support base for the items to be worked, a step b) of providing a plurality of nozzles for generating jets oriented toward the items to be worked, a step c) of feeding the nozzles with a high-pressure liquid adapted to create cuts on the items being worked, a step d) of forwardly moving the items relative to the head in the longitudinal direction, a step e) in which the relative positions of the nozzles are staggered in a transverse direction with a predetermined pitch, and the projection of their pitch is continuously adjusted on a vertical plane substantially parallel to a transverse direction, to change the transverse distance between the longitudinal cuts made by the jets.
  • the step c) of feeding the jets comprises feeding only water, without using abrasives, at a feeding pressure above 1500 bar.
  • the method may also comprise one or more additional steps of controlled displacement of the jets in one or more directions of translation and/or rotation, and a step of selective regulation of the impact pressure of jets, for carrying out all the operations as described above for the plant.
  • a step g) may be provided of selectively regulating the impact pressure of the jets J on the items P being worked, said step being carried out by deflecting the individual jets J such that they do not impact the surface S being worked or impact it with not enough energy to deform the material and/or by selectively stopping water feeding to the individual nozzles 4.
  • a step i) may be provided for recovering the feeding water of the emitted jets to recirculate and reuse it for feeding the nozzles 4, possibly after filtration, thereby creating a closed loop.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
EP13003656.9A 2012-08-09 2013-07-22 Verfahren zur Oberflächenbehandlung mit Wasserstrahl von Elementen aus steinigem Material Active EP2695713B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13003656T PL2695713T3 (pl) 2012-08-09 2013-07-22 Sposób obróbki powierzchniowej strumieniem wody elementów wykonanych z materiałów kamiennych

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000208A ITVI20120208A1 (it) 2012-08-09 2012-08-09 Metodo ed impianto per la lavorazione superficiale a getto d'acqua di oggetti in materiale lapideo

Publications (2)

Publication Number Publication Date
EP2695713A1 true EP2695713A1 (de) 2014-02-12
EP2695713B1 EP2695713B1 (de) 2016-11-02

Family

ID=46888608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13003656.9A Active EP2695713B1 (de) 2012-08-09 2013-07-22 Verfahren zur Oberflächenbehandlung mit Wasserstrahl von Elementen aus steinigem Material

Country Status (6)

Country Link
EP (1) EP2695713B1 (de)
DK (1) DK2695713T3 (de)
ES (1) ES2612681T3 (de)
IT (1) ITVI20120208A1 (de)
PL (1) PL2695713T3 (de)
PT (1) PT2695713T (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517048A1 (de) * 1991-06-03 1992-12-09 Jse Corporation Verfahren zur Bearbeitung und Behandlung von Steinfläche und Anordnung dafür
WO1999032262A1 (en) * 1997-12-18 1999-07-01 Apuania Corsi S.R.L. Method and plant for surface abrasive treatment of stone materials, particularly stone slabs
EP1977867A1 (de) 2007-03-19 2008-10-08 MAEMA S.r.l. Strahlwerkzeug und Werkzeughaltekopf für die Bearbeitung von Platten und Blöcken aus Stein, Zement oder derartigen Materialien
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
EP2478968A1 (de) * 2011-01-21 2012-07-25 MAEMA S.r.l. Mehrfachwerkzeug-Strahlapparat für die Oberflächenbearbeitung harter Objekte

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517048A1 (de) * 1991-06-03 1992-12-09 Jse Corporation Verfahren zur Bearbeitung und Behandlung von Steinfläche und Anordnung dafür
US5291694A (en) 1991-06-03 1994-03-08 Jse Corporation Apparatus and method of working and finish treating a stone surface
WO1999032262A1 (en) * 1997-12-18 1999-07-01 Apuania Corsi S.R.L. Method and plant for surface abrasive treatment of stone materials, particularly stone slabs
EP1045742A1 (de) 1997-12-18 2000-10-25 Apuania Corsi S.R.L. Verfahren und vorrichtung zur abrasiven oberflächenbearbeitung von steinmaterialien
EP1977867A1 (de) 2007-03-19 2008-10-08 MAEMA S.r.l. Strahlwerkzeug und Werkzeughaltekopf für die Bearbeitung von Platten und Blöcken aus Stein, Zement oder derartigen Materialien
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
EP2478968A1 (de) * 2011-01-21 2012-07-25 MAEMA S.r.l. Mehrfachwerkzeug-Strahlapparat für die Oberflächenbearbeitung harter Objekte

Also Published As

Publication number Publication date
PT2695713T (pt) 2017-02-10
ITVI20120208A1 (it) 2014-02-10
PL2695713T3 (pl) 2017-06-30
DK2695713T3 (en) 2017-02-13
ES2612681T3 (es) 2017-05-18
EP2695713B1 (de) 2016-11-02

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