EP4124433A1 - Gravurvorrichtung für relativ zerbrechliche materialplatten und gravurverfahren dafür - Google Patents

Gravurvorrichtung für relativ zerbrechliche materialplatten und gravurverfahren dafür Download PDF

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Publication number
EP4124433A1
EP4124433A1 EP22187564.4A EP22187564A EP4124433A1 EP 4124433 A1 EP4124433 A1 EP 4124433A1 EP 22187564 A EP22187564 A EP 22187564A EP 4124433 A1 EP4124433 A1 EP 4124433A1
Authority
EP
European Patent Office
Prior art keywords
movable member
engraving
along
fork
wheel
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
EP22187564.4A
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English (en)
French (fr)
Inventor
Giorgio DONATONI
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP4124433A1 publication Critical patent/EP4124433A1/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
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/043—Gantry type sawing machines
    • 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
    • B28D1/003—Multipurpose machines; Equipment therefor
    • 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
    • B28D1/22—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising
    • B28D1/225—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising for scoring or breaking, e.g. tiles
    • 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

Definitions

  • the present invention generally finds application in the technical field of processing slabs of relatively fragile material and particularly relates to a device for engraving ceramic or glass slabs, suitable for use in combination with a multiaxial machine tool having a working head.
  • the invention also relates to a method for engraving slabs of relatively fragile material using the aforementioned device.
  • these devices have a handle suitable for being gripped by an operator and at the end thereof a high hardness tool is mounted, suitable for being pressed against the slab and moved along its surface to engrave this latter.
  • machine tools comprising a portal structure designed to delimit a working area and at least one horizontal beam on which a head for processing the slabs is slidingly mounted.
  • the machine tool comprises a carriage sliding on the main beam and a cutting head movable above the slab with an electrospindle to which a disk-shaped tool for cutting the slab is rotatably associated.
  • the machine tool can be equipped with automatic devices for handling the slabs, loading/unloading and/or transferring the products being processed from one area to another to allow automatic processing.
  • the cutting head is configured to be coupled to other types of tools, e.g., a chamfering tool with an appropriately shaped grinding wheel.
  • the machine tool can be used for processing slabs in stone material, such as marble or granite, but not for processing slabs of relatively fragile material such as ceramic or glass.
  • machine tools have been developed for the automatic engraving of slabs of relatively fragile material adapted to be used in combination with machine tools for slabs of stone material in order to allow processing of both glass and stone slabs.
  • portal machine tools comprising a pair of side-by-side carriages sliding on the main beam and respectively provided with a cutting head for slabs in stone material and a device for engraving slabs of relatively fragile material.
  • the technical problem addressed by the present invention consists in engraving slabs of relatively fragile material with a machine tool normally used for cutting stone materials thus limiting the construction and management costs of the machine as a whole.
  • the object of the present invention is to solve the aforementioned problem by providing a device for engraving slabs of relatively fragile material that is highly efficient and relatively cost effective.
  • a particular object of the present invention is to provide a device of the above-described type that is suitable for use in combination with a multiaxial machine tool for cutting stone materials, such as marble and granite.
  • a further particular object of the present invention is to provide a device of the above-described type that makes the engraving processing of the slabs particularly quick and simple.
  • Another object of the present invention is to provide a device of the above-described type that allows a slab to be engraved automatically and by pure rolling along a predetermined path.
  • a further object of the present invention is to provide a device of the above-described type that allows to adjust the engraving pressure of the slab and to engrave it uniformly along the entire engraving path.
  • Another object of the present invention is to provide a device and a method of the above-described type that do not require particular skills from an operator assigned to its management.
  • a further object of the present invention is to provide a device of the above-described type that allows to adjust the incision thickness of the slab.
  • Another object of the present invention is to provide a device and a method of the above-described type that allow slabs of relatively fragile material to be processed at a high speed.
  • a further object of the present invention is to provide a device of the above-described type that allows dry engraving of slabs of relatively fragile material.
  • a device for engraving slabs of relatively fragile material such as ceramic or glass, adapted for use in combination with a multiaxial machine tool having a working head placed above a substantially horizontal support surface, as defined in claim 1.
  • the head comprises a fork movable along three Cartesian axes which is rotatable around a vertical axis and adapted to support at least one work unit
  • the device comprises a movable member operably associable with the fork of the machine tool and which has at its lower end a rolling tool with a substantially horizontal rotation axis, configured to engrave by rolling a slab resting on the support surface along a predetermined engraving path.
  • the rolling tool comprises an adapter designed to be anchored to the lower end of the movable member and a wheel idly pivoted on the adapter.
  • the adapter is anchored to the lower end of the movable member in a floating manner, with freedom of rotation around a second substantially vertical axis of the movable member in such a manner to engrave the material being processed along the predetermined path while the fork is two-dimensionally moved along said horizontal Cartesian axes.
  • the device comprises actuator means acting on the adapter to push the wheel downwards along a substantially vertical direction and vary the engraving pressure of the wheel.
  • the invention also relates to an engraving method using the aforementioned device, as defined in claim 13.
  • a device for engraving slabs L of relatively fragile material, such as ceramic or glass.
  • the device 1 is adapted for use in combination with a multiaxial machine tool, not shown in the figures, for example of the portal type, which comprises a substantially horizontal main beam movable along first longitudinal guide means anchored to the ground.
  • the machine comprises a working head 2 slidingly mounted on the main beam and placed above a substantially horizontal support surface P.
  • the machine tool with its working head 2 can be used to cut or shape slabs in stone materials, such as marble, stone, granite, stone, cement or ceramic conglomerates, following cutting paths controlled by the PLC unit of the machine.
  • stone materials such as marble, stone, granite, stone, cement or ceramic conglomerates
  • head 2 comprises a fork 3 movable along three Cartesian axes X, Y, Z integral with the support surface P and rotatable around a first vertical axis Z and adapted to support at least one working unit 4 for cutting stone slabs.
  • the fork 3 can comprise a flange 5 which can be coupled to rotation means, not shown in the figures, configured to impart to the working unit 4 a rotation around the Z axis to vary its cutting direction.
  • the working unit 4 comprises at least one electrospindle 6 provided with a disk-shaped tool V for cutting the slabs of stone material and coupled to the fork 3 in such a manner to rotate around a first rotation axis R 1 which is substantially horizontal and perpendicular to the vertical axis Z, as better depicted in FIGS. 1 and 2 .
  • the electrospindle 6 can be rotatably mounted on the fork 3 so that it can be tilted around an inclination axis H which is also horizontal and perpendicular to the first rotation axis R 1 .
  • the electrospindle 6, and therefore the tool V of the working unit 4 il tiltable with respect to the support surface P to allow the performance of inclined cuts or material removal machining, such as contouring and/or chamfering.
  • the working unit 4 can be equipped with further cutting means other than the disk-shaped tool, for example with high-pressure water jets or with drilling bits, also tiltable unitary with the electrospindle around the inclination axis H.
  • the fork 3 can also be combined with a manipulator device of the suction cup type for handling the slabs on the support surface P.
  • the support surface P of the machine tool for the slabs to be processed may have a fixed or movable supporting surface.
  • head 2 can be mounted on the main beam and the support surface P for the slabs may have a surface that is rotatable around a vertical axis to facilitate the orientation of the product being processed with respect to the working head 2 and to the engraving device 1.
  • the slab L of relatively fragile material is arranged on the support surface P to have a substantially flat upper surface L A of the slab facing upwards and facing the working head 2, a lower surface L B resting to the support surface P, and a thickness s of predetermined and substantially constant sizes.
  • the device 1 comprises a movable member 8 operatively associable to the fork 3 and having at its lower end a rolling tool 9 with a second substantially horizontal axis of rotation R 2 , configured to engrave by rolling a slab L resting on the support surface P along a predetermined engraving path.
  • the rolling tool 9 is free to rotate due to the contact with the upper surface L A of the slab L to engrave an incision line.
  • the working head 2 in combination with the device 1 it will be possible to carry out a greater number of working operations on the same slab L of relatively fragile material, such as, for example, a first abrasion operation of a ceramic slab L by means of the disk-shaped tool V and a second engraving operation by means of the rolling tool 9, as well as the subsequent breaking by tensioning along the engraving path.
  • the movable member 8 protrudes laterally from the fork 3 so as to selectively extend downwards, along a vertical direction or a second vertical axis W, and without interfering with the working unit 4.
  • the movable member 8 can move between an inoperative position in which the rolling tool 9 does not interact with the slab L, as shown in FIGS. 2 and 4 , and an operating position in which the tool 9 is in contact with the slab L, as shown in FIGS. 1 and 3 .
  • the movable member 8 is coupled to actuator means 10 adapted to promote movement thereof towards the slab L and/or along the vertical direction W and selected from the group comprising pneumatic or hydraulic actuators, worm screw, pinion and rack, linear motors or similar systems.
  • These actuator means 10 comprise a fixed part positioned on a side plate 12 of the fork 3 and a movable part provided by the member 8.
  • the actuator means 10 comprise a pneumatic cylinder having a fixed part or jacket 11 anchored to the side plate 12 and a movable part comprising a stem, wherein in the fixed part 11 there is a provided a pressure chamber, not visible in the figures, in which a piston, also not visible in the figures, integral with the member 8 slides.
  • the actuator means 10 are associated with guide means 13 to accurately guide the movable member 8 in its vertical movement.
  • the guide means 13 comprise a pair of cylindrical or prismatic guides 13', 13" adapted to keep the movable member 8 perpendicular to the support surface P during its vertical movement and during the rotation of the rolling tool 9.
  • the rolling tool 9 comprises an adapter 14 which is anchorable to the lower end of the movable member 8 and a wheel 15 idly pivoted on the adapter 14 and rotatable around the second rotation axis R 2 .
  • the member 8 acts on the adapter 14 to push the wheel 15 downwards along the substantially vertical direction W in such a manner to vary and adjust the engraving pressure of the wheel 15 as well as the engraving thickness of the slab L to engrave the latter uniformly and along a predetermined path.
  • the adapter 14 may be provided with a fitting 16 connected to a supply pipe 17 of a lubricating or refrigerant fluid in order to reduce the frictional forces and the rolling resistance of the wheel 15.
  • the adapter 14 is integral with the lower end of the movable member 8 to engrave the relatively fragile material being processed along the predetermined path while the fork 3 is moved along the Cartesian axes X, Y and rotated around the first vertical axis Z.
  • the adapter 14 is anchored to the lower end of the movable member 8 in a floating manner, i.e., with freedom of rotation around the substantially vertical axis W during the dragging with respect to the material being processed along the predetermined path while the fork 3 is moved only along the Cartesian axes X, Y.
  • the substantially horizontal axis R 2 of the wheel 15 does not intersect the second vertical axis W and is offset with respect to the latter by a predetermined distance d, as better illustrated in FIG. 10 .
  • the wheel 15 is hinged on the adapter 14 with minimal friction and has a substantially circular peripheral cutting edge.
  • the peripheral cutting edge can be made of a material selected from the group comprising tungsten carbide, titanium carbide, tantalum carbide, industrial diamond, or a combination thereof.
  • First sensor means are also provided, not shown in the figures, for detecting and controlling the pressure exerted by the movable member 8 on the wheel 15 and therefore the incision force on the relatively fragile material being processed.
  • the first sensor means can comprise an adjustable pressure switch associated with the actuator means 10.
  • the pressure switch can be interposed between the pressure chamber of the pneumatic cylinder and a source of pressurized fluid.
  • the device 1 can be provided with second sensor means, not shown in the figures, for detecting the position of the movable member 8 with respect to the upper surface L A of the slab L.
  • the adjustable pressure switch and the second sensor means are associated with an electronic control unit adapted to vary the engraving pressure of the wheel 15 as a function of the relatively fragile material being processed and the thickness s of the slab L to be engraved or pre-cut.
  • the method according to the invention comprises the following steps:
  • the engraving device 1 and the related engraving method achieve the intended purposes and in particular allow to simplify the processing and the engraving operations particularly quick.
  • the present invention might find application in industry, because it can be realized on an industrial scale by industries belonging to the field of processing relatively fragile materials.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP22187564.4A 2021-07-30 2022-07-28 Gravurvorrichtung für relativ zerbrechliche materialplatten und gravurverfahren dafür Pending EP4124433A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000020618A IT202100020618A1 (it) 2021-07-30 2021-07-30 Dispositivo di incisione per lastre in materiale relativamente fragile e relativo metodo di incisione

Publications (1)

Publication Number Publication Date
EP4124433A1 true EP4124433A1 (de) 2023-02-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22187564.4A Pending EP4124433A1 (de) 2021-07-30 2022-07-28 Gravurvorrichtung für relativ zerbrechliche materialplatten und gravurverfahren dafür

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EP (1) EP4124433A1 (de)
IT (1) IT202100020618A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1700677A1 (de) * 2003-12-29 2006-09-13 Mitsuboshi Diamond Industrial Co., Ltd. Ritzlinienherstellungsmechanismus, ritzkopf und ritzvorrichtung
WO2015159270A1 (en) * 2014-04-17 2015-10-22 Dario Toncelli Machining apparatus for stone or stone-like slabs, and related working method
JP2015223819A (ja) * 2014-05-30 2015-12-14 三星ダイヤモンド工業株式会社 スクライブヘッド並びにスクライブ装置
EP3603913A1 (de) * 2018-08-02 2020-02-05 Donatoni, Giorgio Schneid- und anfaskopf, mehrachsige maschine mit einem solchen schneid- und anfaskopf sowie schneid- und anfasverfahren
CN112519006A (zh) * 2021-02-07 2021-03-19 佛山市神创机电有限公司 一种岩板切割机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1700677A1 (de) * 2003-12-29 2006-09-13 Mitsuboshi Diamond Industrial Co., Ltd. Ritzlinienherstellungsmechanismus, ritzkopf und ritzvorrichtung
WO2015159270A1 (en) * 2014-04-17 2015-10-22 Dario Toncelli Machining apparatus for stone or stone-like slabs, and related working method
JP2015223819A (ja) * 2014-05-30 2015-12-14 三星ダイヤモンド工業株式会社 スクライブヘッド並びにスクライブ装置
EP3603913A1 (de) * 2018-08-02 2020-02-05 Donatoni, Giorgio Schneid- und anfaskopf, mehrachsige maschine mit einem solchen schneid- und anfaskopf sowie schneid- und anfasverfahren
CN112519006A (zh) * 2021-02-07 2021-03-19 佛山市神创机电有限公司 一种岩板切割机

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Publication number Publication date
IT202100020618A1 (it) 2023-01-30

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