EP3810366B1 - Maschine zum schleifen von brammen - Google Patents

Maschine zum schleifen von brammen Download PDF

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Publication number
EP3810366B1
EP3810366B1 EP19742487.2A EP19742487A EP3810366B1 EP 3810366 B1 EP3810366 B1 EP 3810366B1 EP 19742487 A EP19742487 A EP 19742487A EP 3810366 B1 EP3810366 B1 EP 3810366B1
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EP
European Patent Office
Prior art keywords
slabs
machine
station
grinding
feed direction
Prior art date
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Active
Application number
EP19742487.2A
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English (en)
French (fr)
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EP3810366A1 (de
Inventor
Giuliano SIGNORINI
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.)
Soltek Srl
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Soltek Srl
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/0069—Other grinding machines or devices with means for feeding the work-pieces to the grinding tool, e.g. turntables, transfer means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/002—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor for travelling workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • B24B9/10—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass
    • B24B9/102—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass for travelling sheets

Definitions

  • This invention relates to the field of machining slabs, for example tiles, made from ceramic material, stone, glass or the like.
  • the invention relates to a machine for grinding slabs.
  • the main aim of this grinding operation is to guarantee the mutual orientation of the sides in such a way as to allow the placing alongside of the various slabs without clearance.
  • the sides of the products to be processed protrude laterally and come into contact with a succession of grinding wheels, which remove the excess material and move the outer perimeter flush and, if necessary, one or more inclined grinding wheels, for performance of the chamfering operation.
  • the slabs are then rotated by 90° in such a way that the two remaining sides can be ground by further grinding wheels facing and alongside the movement plane.
  • the machines for grinding slabs have special positioning means which, after the rotation of the slabs, adjust the orientation on the movement plane in such a way that the sides already ground are perpendicular to the orientation of the subsequent grinding wheels.
  • the prior art teaches the use of the linear thrust elements located above the movement plane which, simultaneously with the passage of each slab, are lowered and transferred horizontally in an independent fashion so as to come into contact with the rear edge of the latter in such a way as to adjust the orientation.
  • the technical purpose which forms the basis of this invention is to provide a machine for grinding slabs which overcomes at least some of the above-mentioned drawbacks of the prior art.
  • the aim of the invention is to provide a machine for grinding slabs which is an alternative to and more efficient than the prior art, with regard to the mechanism for moving the thrust elements.
  • machine 1 a machine for grinding slabs is indicated generically by the reference numeral 1 and it will be referred to below as "machine 1".
  • labs means sheet-like elements made of ceramic, stone, glass or the like, such as, for example, tiles for floors or walls.
  • the machine 1 comprises a main frame 10 which defines a supporting base of the machine 1 and supports a plurality of grinding and/or chamfering wheels 11.
  • the machine 1 also comprises a secondary frame 20 which can be connected to the main frame 10 by one or more connecting portions 21 and preferably having one or more supporting portions 22 configured for resting on the floor.
  • the main frame 10 supports a conveyor 12 configured for moving a plurality of slabs along a feed direction "A" from an infeed station "I” to an outfeed station “U” passing through a grinding station "R” on which the grinding wheels 11 face.
  • the conveyor 12 is configured to receive the slabs to be processed from a movement plane upstream of the machine 1 and connected to the conveyor 12 at the infeed station "I".
  • the conveyor 12 comprises two pairs of belts and each pair of belts comprises a lower belt and an upper belt opposite to each other and configured to grip a slab positioned between them and move it along the feed direction "A".
  • the two pairs of belts are positioned in such a way that they grip on the slabs at respective side edges to be ground, in particular in such a way that the above-mentioned edges protrude laterally from the belts and are exposed.
  • the grinding wheels 11 are connected to the main frame 10 in such a way that they are movable towards and away from the conveyor 12 to come into contact with the exposed lateral edges of the slabs passing through the grinding station "R" and perform the grinding and/or chamfering.
  • the secondary frame 20 forms a structure which can be coupled to the main frame 10 in a modular fashion in order to increase the flexibility of use, only the main frame 10 and the components described above which are supported by it define, in effect, in itself an operational machine for grinding slabs.
  • the secondary frame 20 defines a calibration station "C" upstream of said grinding station “R” and of the infeed station “I”, at the movement plane upstream of the machine 1, and has positioning means 25 acting on the slabs which travel on the movement plane at the calibration station "C".
  • the positioning means 25 act along the conveyor 12 and the calibration station "C" is positioned between the infeed station "I” and the grinding station "R", upstream of the latter.
  • the positioning means 25 are configured for adjusting an orientation of the slabs which pass through the calibration station "C" to adjust the orientation with respect to their feed direction "A" defined by the conveyor 12.
  • the positioning means 25 comprise sliding guides 26, preferably two, oriented parallel to the feed direction "A" and two carriages 27 which are slidable on them.
  • the positioning means 25 comprise a single transfer actuator 28 configured for simultaneously moving the carriages 27 along the feed direction "A" between an advanced position and a withdrawn position in such a way that the carriages 27 are positioned at all times at the same longitudinal coordinate along the feed direction "A".
  • the carriages 27 are positioned further upstream relative to the withdrawn position with reference to the feed direction "A" of the slabs.
  • the translation actuator 28 is connected to the carriages 27 by means of the mechanical transmission units 29 which connect together in a kinematic fashion the movements of the carriages 27 on the sliding guides 26 in such a way that they move in a synchronous fashion with each other.
  • the positioning means 25 comprise supports 30, each fixed to a respective carriage 27 in such a way that it can translate between the advanced position and the withdrawn position following the movement of the carriage 27.
  • the positioning means 25 comprise thrust elements 35, preferably two, each rotatably connected to a respective support 30 in such a way as to be rotationally movable relative to it between an engaging position and a disengaging position.
  • the thrust elements 35 are rotatable about respective axes of rotation 'G' oriented perpendicularly to the feed direction "A" and parallel to the plane in which the slabs lie.
  • the thrust elements 35 are configured for making contact against an end edge of a slab positioned in the calibration station "C" which advances towards the grinding station "R".
  • the thrust elements 35 are configured so as not to interfere with a feeding of the slabs positioned on the movement plane or on the conveyor 12 towards the grinding station "R".
  • the positioning means 25 comprise two rotation actuators 31 each connected to a respective thrust element 35 and configured to rotate about the respective axis of rotation "G" from the engaging position to the disengaging position.
  • the rotation actuators 31 are mutually independent and configured to rotate the two thrust elements 35 independently of each other.
  • the sliding of the carriages 27 along the sliding guides 26 allows the thrust elements 35 to be translated from the advanced position to the withdrawn position.
  • each of them comprises an arm 36 hinged to one of the supports 30 at a relative end in such a way as to allow the rotation of the thrust element 35 between the engaging position and the disengaging position.
  • each arm 36 extends along a respective main line of extension shaped in such a way that its free end is oriented perpendicularly to the lying position of the slabs in the calibration station "C" when the respective thrust element 35 is in an engaging position.
  • each thrust element 35 comprises a removable contact plug 37, connected to each arm 36 at the free end in such a way that it makes contact with a respective slab when in an engaging position during a transfer of the thrust element 35 from the advanced position to the withdrawn position.
  • the positioning means 25 comprise a mechanism for adjusting the reciprocal distance between the sliding guides 26 in such a way as to control the distance between the thrust elements 35 in a direction transversal to the feed direction "A".
  • the sliding guides 26 are slidably mounted on further orientation guides 32 perpendicularly to the feed direction "A" and the above-mentioned adjustment mechanism comprises a unit 33 for adjusting the mutual distance between the sliding guides 26.
  • the adjusting unit 33 can adjust the mutual distance between the guides 26, and therefore between the thrust elements 35, between a minimum of 400 mm and a maximum of 2400 mm.
  • the invention achieves the set aim by overcoming the drawbacks of the prior art.
  • the solution described defines an effective alternative to the prior art solutions and, thanks to the kinematic mechanisms which control the thrust elements, it is simpler and more efficient to perform the movement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)

Claims (10)

  1. Maschine (1) zum Schleifen von Platten, umfassend:
    - einen Förderer (12), der ausgelegt ist, um eine Vielzahl von Platten entlang einer Zuführrichtung (A) von einer Einführstation (I) zu einer Abführstation (U) zu bewegen, die durch eine Schleifstation (R) verläuft;
    - eine Vielzahl von Schleifscheiben (11), die der Schleifstation (R) zugewandt und zum Schleifen einer oder mehrerer Platten in der Schleifstation (R) ausgelegt sind;
    - Positionierungsmittel (25), die auf eine Kalibrierungsstation (C) stromaufwärts der Schleifstation (R) einwirken und zum Einstellen der Ausrichtung einer oder mehrerer Platten relativ zur jeweiligen Zuführrichtung (A) ausgelegt sind;
    - einen Hauptrahmen (10), der die Vielzahl von Schleifscheiben (II) trägt, wobei der Hauptrahmen (10) eine Basis zum Tragen der Maschine (1) definiert;
    dadurch gekennzeichnet, dass sie einen sekundären Rahmen (20), der die Positionierungsmittel (25) trägt, wobei der sekundäre Rahmen (20) mindestens einen Trägerabschnitt (22), der zum Tragen oder Verankern auf dem Boden ausgelegt ist, und mindestens einen Verbindungsabschnitt (21) umfasst, der für eine reversible Verbindung mit dem Hauptrahmen ausgelegt ist, wobei die Positionierungsmittel (25) Schubelemente (35) umfassen, die zwischen einer Eingriffsposition, in der die Schubelemente (35) ausgelegt sind, um einen Kontakt mit einer Endkante einer in der Kalibrierungsstation (C) positionierten Platte herzustellen, und einer Löseposition, in der die Schubelemente (35) ausgelegt sind, um eine Zuführung der Platten zur Schleifstation (R) hinführend nicht zu stören, drehbar beweglich sind,
    wobei die Schubelemente (35) auch parallel zur Zuführrichtung (A) zwischen einer vorgeschobenen Position und einer zurückgezogenen Position überführbar sind, wobei die Positionierungsmittel (25) einen Mechanismus zum Einstellen des reziproken Abstands zwischen den Schubelementen (35) in einer Richtung quer zur Zuführrichtung (A) umfassen.
  2. Maschine (1) nach Anspruch 1, wobei die Positionierungsmittel (25) Träger (30) umfassen, die in einer Richtung parallel zur Zuführrichtung (A) zum Bewegen der Schubelemente (35) zwischen der vorgeschobenen Position und der zurückgezogenen Position überführt werden können, wobei ein jedes Schubelement (35) einen Arm (36) umfasst, der ein Ende, das an einem jeweiligen Träger (30) angelenkt ist, sodass eine Drehung des Schubelements (35) zwischen der Eingriffsposition und der Löseposition ermöglicht wird, und ein freies Ende aufweist, das so ausgelegt ist, dass es an der Höhe der Platten in der Kalibrierungsstation (C) positioniert ist, wenn es sich in einer Eingriffsposition befindet, und dass es eine Zuführung der Platten in Richtung der Schleifstation (R) hinführend nicht stört, wenn es sich in einer Löseposition befindet.
  3. Maschine (1) nach Anspruch 2, wobei sich ein jeder Arm (36) entlang einer jeweiligen Verlängerungslinie erstreckt, die geformt ist, sodass das freie Ende eines jeden Arms (36) senkrecht zur Liegeposition der Platten in der Kalibrierungsstation (C) ausgerichtet ist, wenn sich das Schubelement (35) in einer Eingriffsposition befindet.
  4. Maschine (1) nach Anspruch 2 oder 3, wobei ein jedes Schubelement (35) einen entfernbaren Kontaktanschluss (37) umfasst, der mit einem jeden Arm (36) verbunden ist, sodass er mit einer jeweiligen Platte in Kontakt kommt, wenn sich das Schubelement (35) in einer Eingriffsposition während einer Überführung des Schubelements (35) von der vorgeschobenen Position in die zurückgezogene Position befindet.
  5. Maschine (1) nach einem der Ansprüche 2 bis 4, wobei die Positionierungsmittel (25) Schlitten (27) umfassen, die auf jeweiligen Schiebeführungen (26) parallel zur Zuführrichtung (A) verschiebbar sind, wobei ein jeder Träger (30) an einem jeweiligen der Schlitten (27) befestigt ist, um eine Überführung der Schubelemente (35) zwischen der vorgeschobenen Position und der zurückgezogenen Position zu ermöglichen.
  6. Maschine (1) nach Anspruch 5, wobei die Positionierungsmittel (25) einen einzelnen Überführungsantrieb (28) umfasst, der zum gleichzeitigen Bewegen der verschiebbaren Schlitten (27) zwischen der vorgeschobenen Position und der zurückgezogenen Position ausgelegt ist, wobei der Überführungsantrieb (28) mit den Schlitten (27) durch Übertragungseinheiten verbunden ist, die die Bewegung der Schlitten (27) auf den Schiebeführungen (26) kinematisch einschränken.
  7. Maschine (1) nach einem der vorhergehenden Ansprüche, umfassend zwei Drehantriebe (31), die jeweils mit einem jeweiligen Schubelement (35) verbunden sind, wobei die Drehantriebe (31) ausgelegt sind, um die Drehung der Schubelemente (35) von der Eingriffsposition in die Löseposition auf eine wechselseitig unabhängige Weise zu betätigen.
  8. Maschine (1) nach einem der Ansprüche 5, 6 oder 7, wobei die Schiebeführungen (26) parallel zur Zuführrichtung (A) verschiebbar an weiteren Führungen (32) senkrecht zur Zuführrichtung (A) montiert sind, wobei der Einstellmechanismus eine Einheit (33) zum Einstellen des Abstands zwischen den Schiebeführungen (26) umfasst.
  9. Maschine (1) nach einem der vorhergehenden Ansprüche, wobei die Schubelemente (35) zwischen der Eingriffsposition und der Löseposition um eine Drehachse (G) drehbar beweglich sind, die parallel zu einer Gleitebene der Platten auf dem Förderer (12) und vorzugsweise senkrecht zur Zuführrichtung (A) verläuft.
  10. Maschine (1) nach einem der vorhergehenden Ansprüche, wobei der Förderer (12) zum Aufnehmen der Platten an der Einführstation (I) von einer Bewegungsebene stromaufwärts, die die Kalibrierungsstation (C) definiert, ausgelegt ist, wobei die Positionierungsmittel (25) auf die Bewegungsebene einwirkt, um die Ausrichtung der Platten, die in Richtung der Einführstation (I) vorgeschoben werden, einzustellen.
EP19742487.2A 2018-06-19 2019-06-18 Maschine zum schleifen von brammen Active EP3810366B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102018000006453A IT201800006453A1 (it) 2018-06-19 2018-06-19 Macchina per la rettifca di lastre
PCT/IB2019/055082 WO2019244021A1 (en) 2018-06-19 2019-06-18 A machine for grinding slabs

Publications (2)

Publication Number Publication Date
EP3810366A1 EP3810366A1 (de) 2021-04-28
EP3810366B1 true EP3810366B1 (de) 2022-10-05

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EP19742487.2A Active EP3810366B1 (de) 2018-06-19 2019-06-18 Maschine zum schleifen von brammen

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EP (1) EP3810366B1 (de)
IT (1) IT201800006453A1 (de)
WO (1) WO2019244021A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112372418B (zh) * 2020-11-16 2023-08-04 株洲华信精密工业股份有限公司 一种机械配件的自动化磨毛边装置
CN119036287B (zh) * 2024-10-31 2025-01-21 山东文泰家居科技有限公司 实木门加工用表面处理装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20020074A1 (it) * 2002-02-15 2003-08-18 Biesse Spa Macchina per la lavorazione di pannelli di legno o simili
ITTO20040724A1 (it) * 2004-10-19 2005-01-19 Biesse Spa Macchina per la lavorazione dei bordi di lastre di vetro, marmo, materiali lapidei o ceramici in genere
ITBO20060484A1 (it) * 2006-06-23 2007-12-24 Biesse Spa Dispositivo per il convogliamento di pannelli di legno o simili
US10654143B2 (en) * 2015-06-23 2020-05-19 Ancora S.P.A. Grinding machine for plate-like elements, particularly ceramic tiles and plates, natural stones, glass or similar

Also Published As

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WO2019244021A1 (en) 2019-12-26
EP3810366A1 (de) 2021-04-28
IT201800006453A1 (it) 2019-12-19

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