EP0319196B1 - Maschine für das Schneiden von Stein oder anderen Materialien - Google Patents

Maschine für das Schneiden von Stein oder anderen Materialien Download PDF

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Publication number
EP0319196B1
EP0319196B1 EP88311126A EP88311126A EP0319196B1 EP 0319196 B1 EP0319196 B1 EP 0319196B1 EP 88311126 A EP88311126 A EP 88311126A EP 88311126 A EP88311126 A EP 88311126A EP 0319196 B1 EP0319196 B1 EP 0319196B1
Authority
EP
European Patent Office
Prior art keywords
conveyor belt
saw blade
stone
blocks
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.)
Expired - Lifetime
Application number
EP88311126A
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English (en)
French (fr)
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EP0319196A3 (en
EP0319196A2 (de
Inventor
Malcolm Blackler Trembath
John Toop Trembath
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to AT88311126T priority Critical patent/ATE92395T1/de
Publication of EP0319196A2 publication Critical patent/EP0319196A2/de
Publication of EP0319196A3 publication Critical patent/EP0319196A3/en
Application granted granted Critical
Publication of EP0319196B1 publication Critical patent/EP0319196B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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 generally to machines for cutting stone or other material, and particularly to a cutting machine incorporating a circular saw blade for cutting flat faces on blocks of stone or the like. Without prejudice to the generality thereof the present invention will hereinafter be described with particular reference to machines adapted to cut blocks of stone. Such machines are often referred to as stone saws. Known stone saws are large, heavy machines which operate slowly because of the heavy work involved, and require constant attention.
  • the other type of stone saw in wide use is the trolley-type in which a circular saw carried on a fixed (but adjustable) mount is driven to rotate whilst the stone is brought into contact with it by means of a trolley movable on rails.
  • a trolley movable on rails it is necessary for the stone to be loaded on the trolley and fixed thereon in such a way that the stone is not displaced out of its desired orientation upon contact with the saw blade and a cut is performed by successive traverses of the trolley with the blade being successively adjusted to cut deeper and deeper into the slot until the appropriate cut right through the stone has been performed, whereupon it is necessary to pass the trolley backwards through the cutting position to the loading and unloading position.
  • the saw can be continuously driven it is nevertheless inoperative for the whole length of the time during which the stone is being loaded onto and unloaded from the trolley and such a saw is therefore slow, and offers only a low production rate whilst requiring a high labour input.
  • a stone cutting machine is also described in NL-A-8402639 in which stones to be cut are carried into contact with a circular saw by an endless conveyor belt, the saw operating in correspondence with grooves in the belt so as to cut through the stones in a single pass.
  • An alternative stone cutter using endless belts is described in DE2360967 but employs belts separated by gaps in which the saws work.
  • Such machines can achieve a greater production rate than the more usual prior art machines described above but the object of the present invention is to provide a stone saw which is even more cost effective in terms of structure and usage than such prior saws.
  • a machine for cutting stone or other materials comprising a fixed mounting for a circular saw blade, means for driving the saw blade to rotate, and an endless conveyor belt for carrying blocks of stone or other material to be cut into contact with the saw blade, the conveyor belt having a plurality of parallel, upstanding, longitudinal ribs with substantially co-planar support surfaces for supporting the blocks of material to be sawn in use of the machine and the saw blade mounting being so arranged that the rim of the saw blade projects into a channel between a selected pair of adjacent said ribs whereby to saw completely through a block of material conveyed into contact therewith by the conveyor, characterised in that the conveyor belt comprises a flexible element carried in a loop over two drums, one at each end of the loop, with an upper, support limb of the loop supported by a plurality of parallel rollers the axes of which all the lie in a common plane and extend transversely of the length of the conveyor belt, in that the conveyor belt is of resilient material such that the supporting ribs
  • the invention provides a method for cutting stone or other materials including conveying the blocks of stone into contact with a rotary saw blade on an endless conveyor belt having a plurality of parallel, upstanding, longitudinal ribs for supporting the blocks, the saw blade being so arranged that its rim projects into a channel between a selected pair of adjacent said ribs so as to saw completely through a block of material conveyed on the conveyor belt, characterised in that the conveyor belt ribs are formed of elastomeric material and define co-planar supporting surfaces which frictionally engage the blocks of material to urge them into contact with the saw blade and in that the method includes the steps of transferring the blocks of material to be cut onto the conveyor belt in a direction substantially in line with their movement on the conveyor belt, and supporting the weight of the blocks on the conveyor belt by means of two drums, one at each end of the conveyor belt loop, and a plurality of parallel rollers beneath an upper, support limb of the belt arranged with their axes in a common plane and extending transverse the length of the conveyor belt.
  • the stone cutting machine of the present invention has several surprising aspects. First, it has been found that there is in fact no need to restrain the stone whilst in contact with the saw blade, and that the frictional engagement between the conveyor and the stone block, together with the contact between the saw teeth and the stone block (it being appreciated that the saw rotates in such a direction as to incorporate a component of the movement of the part of the blade contacting the stone, in the direction of travel of the conveyor) is sufficient to ensure that the surface of the stone being worked by the saw remains in working contact therewith.
  • the rollers may be freely rotatably mounted on a support frame of the conveyor, to transfer the weight of the blocks to the ground or other support surface.
  • the drive to the conveyor belt may be transmitted via one or a plurality of the rollers, or via one or both of the drums at the end of the loop.
  • drive is transmitted via a single drum driven to rotate via a chain transmission from a drive member as will be described in more detail hereinbelow.
  • each slab cut by the stone saw can be adjusted by varying the position on the conveyor of the blocks are they approach the saw blade, and this can be achieved by the provision of an adjustable guide fence defining one edge of the path of the stone along the conveyor, this being laterally adjustable to vary the position of the path of the stone with respect to the saw blade and therefore vary the thickness of the cut stone. It would also be possible in theory to vary the position of the saw blade across the width of the conveyor and provision for such adjustment can be made if desired.
  • a plurality of circular saw blades on a common drive shaft spaced across the width of the conveyor for cutting individual stones into several slabs in one pass through the machine.
  • the stone-cutting machine shown is generally indicated with the reference numeral 11 comprising a conveyor section generally indicated 12 a loading table generally indicated 13 and an unloading table generally indicated 14 with a transverse table section 15 for transferring cut stone to a discharge bay.
  • the conveyor section 12 comprises a robust frame of welded box-section and angle-section steel members including a plurality of upright legs 10 supporting two main longitudinal supports 16 on opposite ends of which are carried two main drums 17, 18 the former of which is a driven drum and the latter of which is a freely rotatable drum.
  • a conveyor belt 19 which, as can be seen in Figure 3, comprises a laminar base layer 20 on the upper surface of which are bonded a plurality of longitudinal ribs 21 which, between them, define adjacent parallel longitudinal channels 22.
  • the conveyor belt 19 is a robust material incorporating rubber or other elastomer, and typically may be an inch or two inches thick to withstand the abrasive action of carrying stone blocks over an extended period of time.
  • the frame 15 carries a plurality of parallel support rollers 23 closely spaced along an upper frame member 24 to provide close support for the conveyor belt 19.
  • the conveyor drum 17 is driven in operation, to cause the conveyor belt 19 to move in a loop over the two drums 17, 18, and drive is transmitted to the drum 17 via a large chain wheel 25 over which passes a chain 26 driven via a double reduction gear box 29 itself driven via an hydraulic infinitely variable gear box 27 from a motor 44.
  • Drive from the motor 44 is transmitted to the hydraulic infinitely variable gear box by an output shaft 28.
  • the drive shaft 28 also has a projecting end on the side of the motor 44 remote from the gear box 27 carrying a pulley 30 over which passes a drive belt 31 which drives a larger pulley 32 on the end of a transmission shaft 33 carrying a multiple belt pulley 34 over which pass a plurality of parallel saw-drive belts 35.
  • the saw drive belts 35 also pass over a smaller saw drive pulley 36 on the end of a shaft (not visible in the drawings) which carries two parallel saw blades 37, 38 partially shrouded by a guard 39.
  • a shaft not visible in the drawings
  • the saw blades 37, 38 can be driven to rotate at constant speed whilst the speed of advance of the conveyor belt 19 can be varied to compensate for the size of stone being cut since obviously, with the saw blades turning at a constant speed, the cutting rate on a larger stone, and thus the required speed of advance of the conveyor belt 19, will be slower than when the saw blade is cutting smaller stones.
  • the saw blade shaft is carried by a column 40 and is adjustable, by means of a hand wheel 41 whereby to vary the position of the saw blades 37, 38 across the width of the conveyor belt 19, for which purpose the saw blade shaft is formed as a composite, telescopic splined shaft mounted in an extended bearing 42 fixed to the column 40.
  • the stone saw 11 also incorporates means for spraying a cooling liquid, such as water, over the saw blades where they contact the stone blocks being cut, but such coolant system is conventional and is not illustrated in the drawings or described further herein.
  • a cooling liquid such as water
  • a guide fence 43 Carried on one side of the conveyor belt 19 supported by the support frame 15 is a guide fence 43 the lateral position of which is adjustable to vary the position of the stone blocks as they are conveyed into contact with the saw blade or blades 37, 38.
  • a guide fence 43 the lateral position of which is adjustable to vary the position of the stone blocks as they are conveyed into contact with the saw blade or blades 37, 38.
  • two blades are shown in Figure 2 it will be appreciated that the stone saw of the present invention may incorporate only a single blade, or may incorporate more than two blades carried on the blade drive shaft.
  • stone blocks are loaded onto the loading table 13 where they can be orientated into the required orientation to determine the cutting plane, and then moved into contact with the guide fence 43 and onto the conveyor 19.
  • the rubber ribs 21 of the conveyor belt 19 contact the stone blocks and carry them into contact with the saw blade or blades 37, 38 which, being driven to rotate at a high speed in relation to the speed of advance of the conveyor belt 19 cut the stone into one or more slabs (depending on the number of saw blades) in a single pass from which the cut slab is conveyed, still in contact with the conveyor 19, onto the unloading table 14 from which the cut slabs can be displaced laterally onto the discharge table 15 and any blocks requiring further cutting can be brought back to the loading table 13 and positioned with the cut face in contact with the guide fence 43 for cutting further slabs.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)

Claims (10)

  1. Eine Maschine zum Schneiden von Stein oder anderen Materialien, bestehend aus einer festen Halterung (40) für ein Kreissägeblatt (37, 38), Mitteln (32, 33, 34, 35, 36), um das Sägeblatt (37, 38) in Drehung zu versetzen, und einem Endlosförderband (19) zum Zustellen von Blöcken aus Stein oder einem anderen zu schneidenden Material bis zum Kontakt mit dem Sägeblatt (37, 38), wobei das Förderband eine Mehrzahl paralleler, hochstehender, längs verlaufender Rippen (21) mit im wesentlichen in einer Ebene liegenden Auflageflächen hat, welche dazu dienen, im Gebrauch der Maschine die zu sägenden Materialblöcke zu tragen, und wobei die Sägeblatthalterung (40) so angeordnet ist, daß der Rand des Sägeblatts (37, 38) in einen Kanal (22) zwischen ausgewählten zwei benachbarten Rippen (21) hineinragt, wodurch ein Materialblock, der durch das Förderband (19) mit dem Rand des Sägeblatts in Kontakt gebracht wird, vollkommen durchgesägt wird;
    dadurch gekennzeichnet,
    daß das Förderband (19) aus einem biegsamen Element besteht, das in einer Schleife über zwei Trommeln (17, 18), je eine an jedem Ende der Schleife (19), geführt wird, wobei ein oberes Stützglied der Schleife (19) von einer Mehrzahl von parallelen Walzen (23) gestützt wird, deren Achsen alle in einer gemeinsamen Ebene liegen und quer zur Länge des Förderbandes verlaufen,
    daß das Förderband aus einem elastischen Material besteht, so daß die Stützrippen (21) reibschlüssig einen darauf ruhenden Steinblock erfassen und ihn dadurch in Kontakt mit dem Sägeblatt (37, 38) schieben,
    und daß die Maschine ferner einen Ladetisch (13) mit einer im wesentlichen zu den Auflageflächen der Förderbandrippen parallelen Auflagefläche besitzt, von der Steine, die von der im Gebrauch befindlichen Maschine zu schneiden sind, auf das Förderband geleitet werden, und zwar im wesentlichen in der Richtung ihrer Bewegung auf dem Förderband.
  2. Eine Maschine gemäß Anspruch 1,
    dadurch gekennzeichnet,
    daß die genannte Mehrzahl von Walzen (23) sich im Kontakt mit der Unterseite des Förderbandes (19) frei drehen kann.
  3. Eine Maschine gemäß Anspruch 1 oder Anspruch 2,
    dadurch gekennzeichnet,
    daß der Antrieb des Förderbandes (19) über eine der Trommeln (17) am Ende der Schleife übertragen wird.
  4. Eine Maschine gemäß einem der vorangehenden Ansprüche,
    dadurch gekennzeichnet,
    daß einstellbare, in Längsrichtung verlaufende Führungsmittel (43) vorgesehen sind, die eine Kante der Bahn des Steins auf dem Förderband (19) begrenzen, wobei diese Führungsmittel (43) seitlich einstellbar sind, um die Position der Bahn des zu schneidenden Materials gegenüber dem Sägeblatt (37, 38) zu verändern und dadurch die Dicke des von der Maschine geschnittenen Materials zu verändern.
  5. Eine Maschine gemäß einem der vorangehenden Ansprüche,
    dadurch gekennzeichnet,
    daß das Sägeblatt so montiert ist, daß es auf einer zusammengesetzten, ineinanderschiebbaren Antriebswelle rotiert, deren Länge einstellbar ist, wodurch die Position des Sägeblattes über die Breite des Förderbandes verändert werden kann.
  6. Eine Maschine gemäß einem der vorangehenden Ansprüche,
    dadurch gekennzeichnet,
    daß eine Mehrzahl von Kreissägeblättern (37, 38) auf einer gemeinsamen Antriebswelle (36) vorgesehen ist, um in einem einzigen Durchgang durch die Maschine einzelne Steine in mehrere Scheiben zu schneiden.
  7. Eine Maschine gemäß einem der vorangehenden Ansprüche,
    dadurch gekennzeichnet,
    daß das Förderband aus einem monolithischen Elastomerelement besteht.
  8. Eine Methode zum Schneiden von Stein oder anderen Materialien, bei der die Steinblöcke auf einem Endlosförderband mit einem rotierenden Sägeblatt in Kontakt gebracht werden, wobei das Förderband eine Mehrzahl paralleler, hochstehender, längs verlaufender Rippen zum Tragen der Blöcke hat, und wobei das Sägeblatt so angeordnet ist, daß sein Rand in einen Kanal zwischen ausgewählten zwei benachbarten Rippen hineinragt, so daß ein Materialblock, der auf dem Förderband transportiert wird, vollkommen durchgesägt wird;
    dadurch gekennzeichnet,
    daß die Rippen des Förderbandes aus einem elastischen Polymer bestehen und in einer Ebene liegende Auflageflächen begrenzen, welche die Materialblöcke reibschlüssig erfassen und sie dadurch in Kontakt mit dem Sägeblatt schieben,
    und daß die Methode die Schritte beinhaltet, daß die zu schneidenden Materialblöcke auf das Förderband geleitet werden, und zwar im wesentlichen in der Richtung ihrer Bewegung auf dem Förderband, und daß das Gewicht der Blöcke auf dem Förderband mittels zweier Trommeln, je eine an jedem Ende der Förderbandschleife, getragen wird und eine Mehrzahl paralleler Walzen unterhalb eines oberes Stützgliedes des Förderbandes so angeordnet ist, daß ihre Achsen in einer gemeinsamen Ebene liegen und quer zur Länge des Förderbandes verlaufen.
  9. Eine Methode gemäß Anspruch 8,
    dadurch gekennzeichnet,
    daß das Förderband mit einer höheren Geschwindigkeit angetrieben wird als die Schnittgeschwindigkeit des Sägeblattes durch die Blöcke hindurch, so daß es zu einem Rutschen zwischen den Blöcken und dem Förderband kommt.
  10. Eine Methode gemäß Anspruch 8 oder Anspruch 9,
    dadurch gekennzeichnet,
    daß eine Mehrzahl von Blöcken auf das Förderband gelegt wird, so daß sie eine Schlange bilden und vom Förderband nacheinander durch den Schneidebereich befördert werden.
EP88311126A 1987-12-01 1988-11-24 Maschine für das Schneiden von Stein oder anderen Materialien Expired - Lifetime EP0319196B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88311126T ATE92395T1 (de) 1987-12-01 1988-11-24 Maschine fuer das schneiden von stein oder anderen materialien.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8728035 1987-12-01
GB878728035A GB8728035D0 (en) 1987-12-01 1987-12-01 Stone-cutting machine

Publications (3)

Publication Number Publication Date
EP0319196A2 EP0319196A2 (de) 1989-06-07
EP0319196A3 EP0319196A3 (en) 1990-11-28
EP0319196B1 true EP0319196B1 (de) 1993-08-04

Family

ID=10627779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88311126A Expired - Lifetime EP0319196B1 (de) 1987-12-01 1988-11-24 Maschine für das Schneiden von Stein oder anderen Materialien

Country Status (5)

Country Link
EP (1) EP0319196B1 (de)
AT (1) ATE92395T1 (de)
DE (1) DE3882930T2 (de)
ES (1) ES2042767T3 (de)
GB (1) GB8728035D0 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1247367B (it) * 1991-02-28 1994-12-12 Luca Toncelli Centro monoblocco per taglio automatico di lastre di pietra come marmo, granito e simili
AU694289B2 (en) * 1994-12-14 1998-07-16 Almonte Diamond Pty Ltd Cutting apparatus
DE20021863U1 (de) 2000-12-27 2001-06-07 Nelles, Willy, 51515 Kürten Vorrichtung zum Planschleifen von künstlichen Steinen, insbesondere von Bimssteinen
ITMO20020095A1 (it) * 2002-04-18 2003-10-20 Viki Ceramiche Artistiche Srl Metodo e apparato per il taglio di elementi lastriformi
DE102012107735B4 (de) 2012-08-22 2024-11-07 Langenstein & Schemann Gmbh Vorrichtung zum Herstellen von Mauersteinen, insbesondere von mit Installationsschlitzen versehenen Mauersteinen, beispielsweise von Kalksandsteinen
CN103192457B (zh) * 2013-04-16 2015-11-18 熊弟康 石滑动双片对切组合锯
CN103341914B (zh) * 2013-07-24 2015-07-01 晋江市连盛液压机械有限公司 一种附有边料处理的石板材双向切片机
CN105729636B (zh) * 2015-06-25 2017-04-12 浙江常至机械有限公司 石材拉槽机
CN104890127B (zh) * 2015-06-25 2016-06-22 浙江常至机械有限公司 石材拉槽机
CN105751395A (zh) * 2016-04-20 2016-07-13 安徽老石人石业有限公司 一种盲道切割机折叠式送料机构
CN108582508B (zh) * 2018-07-19 2019-11-19 湖南华纬水电工程有限公司 一种水坝用石头自动修整装置
CN115416165B (zh) * 2022-09-06 2025-10-10 福建省华隆机械有限公司 一种多锯条大理石切割机
CN116728622B (zh) * 2023-02-17 2026-03-27 成都尖端高新技术产业有限公司 集成房屋构件切割机
CN116766407B (zh) * 2023-08-17 2023-10-24 泉州富桥机械有限公司 一种圆盘锯锯切石板材连续循环生产流水线
AT527943B1 (de) * 2024-09-02 2025-08-15 Prankl Helmut Steinbearbeitungsvorrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747565A (en) * 1954-12-17 1956-05-29 Ingalls Stone Company Continuous feed stone working machine
DE2360967A1 (de) * 1973-12-07 1975-06-12 Bautechnologie Forsch Verfahren und vorrichtung zur herstellung von platten
NL8402639A (nl) * 1984-08-30 1986-03-17 Verheijen Bv Inrichting voor het zagen van steenachtige produkten.

Also Published As

Publication number Publication date
EP0319196A3 (en) 1990-11-28
ES2042767T3 (es) 1993-12-16
DE3882930D1 (de) 1993-09-09
GB8728035D0 (en) 1988-01-06
DE3882930T2 (de) 1993-12-16
ATE92395T1 (de) 1993-08-15
EP0319196A2 (de) 1989-06-07

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