EP0210246A1 - Alternating saw with two blade-holding frames - Google Patents

Alternating saw with two blade-holding frames

Info

Publication number
EP0210246A1
EP0210246A1 EP86901119A EP86901119A EP0210246A1 EP 0210246 A1 EP0210246 A1 EP 0210246A1 EP 86901119 A EP86901119 A EP 86901119A EP 86901119 A EP86901119 A EP 86901119A EP 0210246 A1 EP0210246 A1 EP 0210246A1
Authority
EP
European Patent Office
Prior art keywords
frames
blades
cutting
block
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.)
Withdrawn
Application number
EP86901119A
Other languages
German (de)
French (fr)
Inventor
Giovanni Bastianello
Rino Bastianello
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.)
OFFICINA B M SNC
Original Assignee
OFFICINA B M SNC
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 OFFICINA B M SNC filed Critical OFFICINA B M SNC
Publication of EP0210246A1 publication Critical patent/EP0210246A1/en
Withdrawn legal-status Critical Current

Links

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
    • B28D1/06—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with reciprocating saw-blades
    • B28D1/066—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with reciprocating saw-blades the workpieces being moved in a horizontal plane, e.g. with vertically or oblique movable saw-blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B3/00—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks
    • B27B3/02—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks with vertically-reciprocating saw frame
    • B27B3/14—Arrangements for raising or lowering the feed rollers
    • 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 machine for cutting granites, marbles and agglomerated stones, whose originality lies in the fact that it comprises two frames which are driven by alternating unidirectional movements oriented in opposite directions one of the other and which carry diamond blades suitable for obtaining thin slabs.
  • the machine according to the invention eliminates the use of hard material shot because the cutting is simply carried out by removing a thickness of stone corresponding to the width of the small plates of very hard material which are fixed on each blades with reduced thickness.
  • the machine according to the invention comprises two movable frames animated with alternating movements oriented in opposite directions, on each of which is mounted a series of dimensioned blades suitable for allowing the cutting of blocks of granite, marble or other stones, the blades of the two frames being arranged alternately so that a blade of one is located equidistant from two adjacent blades of the other.
  • the block of stone to be cut advances along a bench being pushed back by a mobile cross-member provided with support screws adjustable in position, so that said block is above all cut by the series of blades mounted on the first • frame, then during its movement along the aforementioned bench is subjected to a new operation by the diamond blades of the second frame, this second operation being carried out at equal distance from the previous cuts.
  • a connecting rod and crank type device is provided to ensure the reciprocating movement of one of the two blade-holder frames, the second frame being connected to the first through a flail mechanism, so that the reciprocating movements of the two frames are always carried out in opposite directions.
  • the two frames are joined at their ends by means of shafts and suitable rod systems which guarantee a regular and continuous movement in the two opposite directions.
  • Fig. 1 is a perspective view showing the assembly of a machine according to the invention.
  • Fig. 2 shows the central part of the machine according to fig. 1, the lateral uprights not having been shown and a block of stone being figured during cutting.
  • Fig. 3 shows the interior of one of the two lateral uprights of the machine.
  • Fig. 4 illustrates the arrangement of the cam, spring and lever mechanism provided for driving the two blade holder frames of the machine.
  • Fig. 5 completes the view of fig. 2 showing the connection of the two blade holder frames.
  • the machine shown comprises a robust bench 1, provided with rollers suitable for allowing its movement; this bench 1 comprises an upper plate cut out with horizontal grooves 2, on which is intended to bear the block of stone to be sawn.
  • the advancement of this block is operated using a front cross member 3 provided with support screws 4 which are adjusted after the bench 1 has been immobilized on the base of the machine.
  • the displacement of the cross-member 3 is ensured by means of threaded shafts 5 and 6 rotated either by a geared motor 7 which ensures the slow movement at reduced speed of said crossover during the movement of advance thereof. , or by a motor 8 which drives the crosspiece at a faster speed during the return movement.
  • the slabs obtained are moved on rollers mounted on a side console 9 ' , which is itself movable on rollers while being capable of being immobilized on the machine during the cutting operation.
  • a side console 9 ' On this roller console 9 are provided guide and support elements 10 which are intended to separate and support the packets of slabs obtained.
  • the cutting is carried out by two frames 11 and 12 (fig. 2) which are equipped with blades 13, respectively 14 arranged in an alternating position so that the blades of a frame make cuts at intermediate positions relative to those operated by the blades of the other frame.
  • Appropriate tensioning devices are mounted on the frames 11 and 12. It will be observed that the blades 13 and 14 are fitted with diamond plates made of a very hard material, of the type used in the usual saws for marble.
  • These frames 11 and 12 further include at their lower and upper ends, on each of their side, lower pivots 15 and 16, upper 17 and 18, which cooperate with two levers or flails 19, 20 (fig. 3) for- the lower pivots, 21 and 22 for the upper pivots; these flails are in turn connected by pairs of levers to the fixed support studs 23 and 24 for the lower pivots 15 and 16, respectively 26 and 27 for the upper pivots 17 and 18.
  • a chain 38 (fig.
  • the return spring referenced 28 in fig. 3 is intended to return and permanently maintain in contact with the cams 41 the drum 44 (FIG. 4) carried by the beam 42.
  • the connecting rods 29 (fig. 2) arranged on the sides of the machine and actuated by the cranks 30 animate the frame 12 with an alternating movement which in turn transmits this movement to the frame 11 via the flails 31 fitted ⁇ 37 rods.
  • the shaft 32 which actuates the rods 29 is driven by a belt transmission 33 (Fig. 1) associated with an electric motor 34 mounted on the upper bridge 35 of the machine.
  • the flails 31 are connected together by a shaft 45
  • FIG. 5 supported by a central bearing 46 fixed on a crosspiece 47, which connects the two lateral uprights 48 and 49 of the machine to each other.
  • This crosspiece 47 has not been shown in FIG. 1 so as not to overload the drawing; it will be noted that it extends parallel to the trigger guard 35 which joins the two uprights 48 and 49.
  • the advantages obtained by adopting the machine according to the invention are easily understood.
  • the two blade-holder frames preferably oriented obliquely and driven by alternating rectilinear unidirectional movements, opposite one another, ensure a significant increase in the cutting speed, and this as a result of the balancing carried out in the forces which are exercised on the block of stone during work.
  • the use of diamond blades with reduced thickness makes it possible to reduce the thickness of the cut and thus to save material, at the same time as avoiding the use of shot mixed with wash water and properly cooled.
  • Another advantage obtained lies in the fact that the marble, granite or agglomerated stone slabs cut by the machine according to the invention have a practically polished surface which requires only a very slight finishing operation.
  • the cutting carried out using diamond blades makes it possible to reduce the costs as a result of the recovery, in decanting vessels, of the water which ensures the immediate washing of the slabs, this water being thus able to be recycled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

Le bloc à découper est repoussé par une traverse (3) le long du banc (1) de façon à être soumis à l'action de deux séries de lames diamantées. Ces lames sont montées sur deux bâtis animés de mouvements alternatifs orientés dans des directions opposées de façon à assurer l'équilibrage des efforts et à permettre également une opération plus économique, sans qu'il soit nécessaire de faire appel à de la grenaille. Les surfaces de dalles obtenues sont pratiquement polies.The cutting block is pushed back by a crosspiece (3) along the bench (1) so as to be subjected to the action of two series of diamond blades. These blades are mounted on two frames animated by reciprocating movements oriented in opposite directions so as to ensure the balancing of forces and also to allow a more economical operation, without it being necessary to use shot. The resulting slab surfaces are practically polished.

Description

Scie alternative à deux bâtis porte-lames. Reciprocating saw with two blade holders.
La présente invention a pour objet une machine pour le découpage des granits, marbres et pierres agglomérées, dont l'originalité réside dans le fait qu'elle comprend deux bâtis qui sont animés de déplacements alternatifs unidirectionnels orientés en sens inverses l'un de l'autre et qui portent des lames diamantées propres à permettre l'obtention de dalles minces.The present invention relates to a machine for cutting granites, marbles and agglomerated stones, whose originality lies in the fact that it comprises two frames which are driven by alternating unidirectional movements oriented in opposite directions one of the other and which carry diamond blades suitable for obtaining thin slabs.
On sait que le découpage de dalles d'épaisseur constante réalisé dans des blocs de granits de natures diverses est ordinairement réalisé à l'aide de scies à mouvement alternatif, équipées d' une série de lames qui sont portées par un bâti et qui découpent la pierre par abrasion à l'aide d'une grenaille d'un matériau très dur, mélangée à de l'eau et à d'autres ingrédients qui sont amenés de manière continue dans la zone de coupe.We know that the cutting of slabs of constant thickness made from blocks of granite of various natures is usually carried out using reciprocating saws, equipped with a series of blades which are carried by a frame and which cut the stone by abrasion using a shot of a very hard material, mixed with water and other ingredients which are brought continuously into the cutting area.
Ce procédé connu implique une dépense importante du fait que la largeur de chaque coupe est égale à l'épaisseur de la lame augmentée de deux fois l'épaisseur de la grenaille qui se déplace sur les flancs de ladite lame. A ce gaspillage de pierre vient s'ajouter le matériau abrasif d'apport qui implique au surplus une accumulation considérable de boues. Lorsqu'on utilise de la grenaille métallique pour le découpage de dalles suivant la méthode traditionnelle, il est indispensable de procéder à un nettoyage immédiat de façon à éviter l'apparition de taches de rouille sur la pierre.This known method involves a significant expense since the width of each cut is equal to the thickness of the blade increased by twice the thickness of the shot which moves on the sides of said blade. To this waste of stone is added the abrasive filler material which also involves a considerable accumulation of sludge. When using metallic shot for cutting slabs according to the traditional method, it is essential to carry out an immediate cleaning so as to avoid the appearance of rust spots on the stone.
On observe que la machine est soumise à des arrêts fréquents afin de pouvoir procéder au réglage de la tension des lames et au remplacement de celles-ci à la suite de leur usure. L'utilisa¬ tion des machines classiques implique une main d'oeuvre considéra¬ ble du fait que la présence de la grenaille métallique provoque des grippages fréquents et nécessite des interventions au niveau des organes d'entraînement et des boulons de soulèvement. Il y a également lieu de prévoir des agencement particuliers pour la récupération et la ré-utilisation de la grenaille.It is observed that the machine is subjected to frequent stops in order to be able to adjust the tension of the blades and to replace them after their wear. The use of conventional machines involves considerable manpower because the presence of metallic shot causes frequent seizures and requires interventions on the drive members and lifting bolts. It is also necessary to provide special arrangements for the recovery and reuse of the shot.
A ce coût de fonctionnement de la machine vient s'ajouter un faible taux d'utilisation du matériau à découper. Par ailleurs les surfaces taillées présentent un aspect médiocre, de telle sorte qu'il est nécessaire de procéder à une opération de finition par lustrage des dalles, cette opération impliquant une main d'oeuvre considérable et une quantité élevée d'abrasif. La machine suivant l'invention permet d'éliminer le recours à la grenaille en matériau dur du fait que la coupe est simplement effectuée par enlèvement d'une épaisseur de pierre correspondant à la largeur des petites plaquettes en matériau très dur qui sont fixées sur chacune des lames a épaisseur réduite.To this operating cost of the machine is added a low rate of use of the material to be cut. Through elsewhere the cut surfaces have a mediocre appearance, so that it is necessary to carry out a finishing operation by buffing the slabs, this operation involving a considerable workforce and a high amount of abrasive. The machine according to the invention eliminates the use of hard material shot because the cutting is simply carried out by removing a thickness of stone corresponding to the width of the small plates of very hard material which are fixed on each blades with reduced thickness.
La machine suivant l'invention comprend deux bâtis mobiles animés de mouvements alternatifs orientés dans des directions opposées, sur chacun desquels est montés une série de lames dimantées propres à permettre le découpage des blocs de granits, marbres ou autres pierres, les lames des deux bâtis étant disposées de manière alternée afin qu'une lame de l'un soit située à égale distance de deux lames adjacentes de l'autre.The machine according to the invention comprises two movable frames animated with alternating movements oriented in opposite directions, on each of which is mounted a series of dimensioned blades suitable for allowing the cutting of blocks of granite, marble or other stones, the blades of the two frames being arranged alternately so that a blade of one is located equidistant from two adjacent blades of the other.
Le bloc de pierre à découper avance le long d'un banc en étant repoussé par une traverse mobile pourvue de vis d'appui réglables en position, de façon à ce que ledit bloc soit avant tout découpé par la série de lames montées sur le premier •bâti, puis au cours de son déplacement le long du banc précité soit soumis à une nouvelle opération par les lames diamantées du second bâti, cette seconde opération étant effectuée à égale distance des coupes antérieures.The block of stone to be cut advances along a bench being pushed back by a mobile cross-member provided with support screws adjustable in position, so that said block is above all cut by the series of blades mounted on the first • frame, then during its movement along the aforementioned bench is subjected to a new operation by the diamond blades of the second frame, this second operation being carried out at equal distance from the previous cuts.
On obtient de la sorte des dalles présentant l'épaisseur désirée, moyennant enlèvement de matériau suivant une largeur simplement égale à l'épaisseur des plaquettes diamantées portées par les lames des deux bâtis. Un autre avantage très important est dû au fait que les mouvements des deux bâtis sont alternés et unidirectionnels dans des directions opposées, de sorte que les sollicitations auxquelles est soumis le bloc en cours de découpage sont automatiquement compensées ; il n'est donc plus nécessaire que le bloc soit solidement ancré sur le banc, son avancement sur celui-ci pouvant être au contraire aisément obtenu moyennant la seule poussée exercée par la traverse mobile montée sur des tiges filetées latérales.In this way, slabs with the desired thickness are obtained, by removing material along a width simply equal to the thickness of the diamond plates carried by the blades of the two frames. Another very important advantage is due to the fact that the movements of the two frames are alternating and unidirectional in opposite directions, so that the stresses to which the block is subjected during cutting are automatically compensated; it is therefore no longer necessary for the block to be firmly anchored on the bench, its advancement thereon being, on the contrary, easily obtainable by means of the only thrust exerted by the movable cross member mounted on lateral threaded rods.
Il est prévu un dispositif du type bielle et manivelle pour assurer le mouvement alternatif de l'un des deux bâtis porte-lames, le second bâti étant relié au premier à travers un mécanisme à fléaux, de sorte que les mouvements alternatifs des deux bâtis s'effectuent toujours dans des directions opposées. Les deux bâtis sont réunis à leurs extrémités par l'intermédiaire d'arbres et de systèmes de biellettes appropriés qui garantissent un mouvement régulier et continu dans les deux directions opposées.A connecting rod and crank type device is provided to ensure the reciprocating movement of one of the two blade-holder frames, the second frame being connected to the first through a flail mechanism, so that the reciprocating movements of the two frames are always carried out in opposite directions. The two frames are joined at their ends by means of shafts and suitable rod systems which guarantee a regular and continuous movement in the two opposite directions.
Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:
Fig. 1 est une vue en perspective montrant l'ensem¬ ble d'une machine suivant l'invention. Fig. 2 montre la partie centrale de la machine suivant fig. 1, les montants latéraux n'ayant pas été représenté et un bloc de pierre étant figuré en cours de découpage.Fig. 1 is a perspective view showing the assembly of a machine according to the invention. Fig. 2 shows the central part of the machine according to fig. 1, the lateral uprights not having been shown and a block of stone being figured during cutting.
Fig. 3 montre l'intérieur de l'un des deux montants latéraux de la machine. Fig. 4 illustre l'agencement du mécanisme à cames, à ressorts et à leviers prévu pour l'entraînement des deux bâtis porte-lames de la machine.Fig. 3 shows the interior of one of the two lateral uprights of the machine. Fig. 4 illustrates the arrangement of the cam, spring and lever mechanism provided for driving the two blade holder frames of the machine.
Fig. 5 complète la vue de fig. 2 en faisant apparaître la liaison des deux bâtis porte-lames. Comm on peut plus particulièrement le voir en fig. 1, la machine représentée comprend un banc robuste 1, pourvu de galets propres à permettre son déplacement ; ce banc 1 comporte un plateau supérieur découpé de rainures horizontales 2, sur lequel est destiné à prendre appui le bloc de pierre à scier. L'avancement de ce bloc est opéré à l'aide d'une traverse avant 3 munie de vis d'appui 4 qui sont réglées après que le banc 1 ait été immobilisé sur l'embase de la machine. Le déplacement de la traverse 3 est assuré à l'aide d'arbres filetés 5 et 6 mis en rotation soit par un moto-réducteur 7 qui assure le déplacement lent à vitesse réduite de ladite traver lors du mouvement d'avance de celle-ci, soit par un moteur 8 qui entraîne la traverse à une vitesse plus rapide lors du déplacement de retour.Fig. 5 completes the view of fig. 2 showing the connection of the two blade holder frames. As can be seen more particularly in fig. 1, the machine shown comprises a robust bench 1, provided with rollers suitable for allowing its movement; this bench 1 comprises an upper plate cut out with horizontal grooves 2, on which is intended to bear the block of stone to be sawn. The advancement of this block is operated using a front cross member 3 provided with support screws 4 which are adjusted after the bench 1 has been immobilized on the base of the machine. The displacement of the cross-member 3 is ensured by means of threaded shafts 5 and 6 rotated either by a geared motor 7 which ensures the slow movement at reduced speed of said crossover during the movement of advance thereof. , or by a motor 8 which drives the crosspiece at a faster speed during the return movement.
Une fois que le bloc de pierre a été découpé, les dalles obtenues sont déplacées sur des rouleaux montés sur une console latérale 9', laquelle est elle-même mobile sur des galets tout en étant susceptible d'être immobilisée sur la machine au cours de l'opération de coupe. Sur cette console à rouleaux 9 sont prévus des éléments de guidage et d'appui 10 qui sont destinés à séparer et à soutenir les paquets de dalles obtenues.Once the stone block has been cut, the slabs obtained are moved on rollers mounted on a side console 9 ' , which is itself movable on rollers while being capable of being immobilized on the machine during the cutting operation. On this roller console 9 are provided guide and support elements 10 which are intended to separate and support the packets of slabs obtained.
Le découpage est opéré par deux bâtis 11 et 12 (fig. 2) qui sont équipés de lames 13, respectivement 14 disposées en position alternée de façon à ce que les lames d'un bâti procèdent à des coupes à des positions intermédiaires par rapport à celles opérées par les lames de l'autre bâti.The cutting is carried out by two frames 11 and 12 (fig. 2) which are equipped with blades 13, respectively 14 arranged in an alternating position so that the blades of a frame make cuts at intermediate positions relative to those operated by the blades of the other frame.
Des dispositifs appropriés de tension sont montés sur les bâtis 11 et 12. On observera que les lames 13 et 14 sont équipées de plaquettes diamantées en un matériau très dur, du type de celles employées dans les scies usuelles pour marbres. Ces bâtis 11 et 12 comportent en outre à leurs extrémités inférieures et supérieures, sur chacun de leur côté, des pivots inférieurs 15 et 16, supérieurs 17 et 18, qui coopèrent avec deux leviers ou fléaux 19, 20 (fig. 3) pour-les pivots inférieurs, 21 et 22 pour les pivots supérieurs ; ces fléaux sont à leur tour reliés par des paires de leviers aux goujons fixes de support 23 et 24 pour ce qui est des pivots inférieurs 15 et 16, respectivement 26 et 27 pour les pivots supérieurs 17 et 18. Une chaîne 38 (fig. 4) portée par deux roues dentées 39 de même diamètre assure la mise en rotation d'un arbre 40 qui porte à ses extrémités deux cames 41 ; celles-ci communiquent le mouvement à un fléau 42 qui par l'intermédiaire de leviers ou bielles 26' et 27' (fig. 3) agissent sur les fléaux 21 et 22 en vue d'approcher un bâti porte-lames du bloc de pierre à travailler tout en éloignant l'autre, les deux bâtis changeant de position à chaque demi-tour en fonction de l'orientation des manivelles 30 (fig. 2) associées aux cames précitées.Appropriate tensioning devices are mounted on the frames 11 and 12. It will be observed that the blades 13 and 14 are fitted with diamond plates made of a very hard material, of the type used in the usual saws for marble. These frames 11 and 12 further include at their lower and upper ends, on each of their side, lower pivots 15 and 16, upper 17 and 18, which cooperate with two levers or flails 19, 20 (fig. 3) for- the lower pivots, 21 and 22 for the upper pivots; these flails are in turn connected by pairs of levers to the fixed support studs 23 and 24 for the lower pivots 15 and 16, respectively 26 and 27 for the upper pivots 17 and 18. A chain 38 (fig. 4 ) carried by two toothed wheels 39 of the same diameter ensures the rotation of a shaft 40 which carries at its ends two cams 41; these communicate the movement to a beam 42 which by means of levers or connecting rods 26 'and 27' (fig. 3) act on the beams 21 and 22 in order to approach a blade-holder frame of the stone block to work while moving the other away, the two frames changing position at each half-turn according to the orientation of the cranks 30 (fig. 2) associated with the aforementioned cams.
Le ressort de rappel référencé 28 en fig. 3 est destiné à rappeler et à maintenir en permanence au contact des cames 41 le tambour 44 (fig. 4) porté par le fléau 42.The return spring referenced 28 in fig. 3 is intended to return and permanently maintain in contact with the cams 41 the drum 44 (FIG. 4) carried by the beam 42.
Les bielles 29 (fig. 2) disposées sur les côtés de la machine et actionnées par les manivelles 30 animent d'un mouvement alternatif le bâti 12 qui transmet à son tour ce mouvement au bâti 11 par l'intermédiaire des fléaux 31 équipés de bielle±tes 37. On notera que l'arbre 32 qui actionne les bielles 29 est entraîné par une transmission à courroies 33 (fig. 1) associée à un moteur électrique 34 monté sur le pontet supérieur 35 de la machine. Les fléaux 31 sont reliés entre eux par un arbre 45The connecting rods 29 (fig. 2) arranged on the sides of the machine and actuated by the cranks 30 animate the frame 12 with an alternating movement which in turn transmits this movement to the frame 11 via the flails 31 fitted ± 37 rods. Note that the shaft 32 which actuates the rods 29 is driven by a belt transmission 33 (Fig. 1) associated with an electric motor 34 mounted on the upper bridge 35 of the machine. The flails 31 are connected together by a shaft 45
(fig. 5) soutenu par un palier central 46 fixé sur une traverse 47, laquelle relie l'un à l'autre les deux montants latéraux 48 et 49 de la machine. Cette traverse 47 n'a pas été représentée à la fig. 1 afin de ne pas surcharger le dessin ; on notera qu'elle s'étend parallèlement au pontet 35 qui réunit les deux montants 48 et 49.(Fig. 5) supported by a central bearing 46 fixed on a crosspiece 47, which connects the two lateral uprights 48 and 49 of the machine to each other. This crosspiece 47 has not been shown in FIG. 1 so as not to overload the drawing; it will be noted that it extends parallel to the trigger guard 35 which joins the two uprights 48 and 49.
Les avantages obtenus moyennant adoption de la machine suivant l'invention se comprennent aisément. Les deux bâtis porte-lames, préfêrablement orientés obliquement et animés de mouvements alternatifs rectilignes unidirectionnels, opposés l'un à l'autre, assurent une augmentation sensible de la vitesse de découpage, et ce par suite de l'équilibrage réalisé dans les efforts qui s'exercent sur le bloc de pierre en cours de travail. On notera en outre que l'utilisation de lames diamantées à épaisseur réduite permet de diminuer l'épaisseur de la coupe et de réaliser ainsi une économie de matériau, en même temps qu'on évite l'emploi de la grenaille mélangée à de l'eau de lavage et convenablement refroidie.The advantages obtained by adopting the machine according to the invention are easily understood. The two blade-holder frames, preferably oriented obliquely and driven by alternating rectilinear unidirectional movements, opposite one another, ensure a significant increase in the cutting speed, and this as a result of the balancing carried out in the forces which are exercised on the block of stone during work. It will also be noted that the use of diamond blades with reduced thickness makes it possible to reduce the thickness of the cut and thus to save material, at the same time as avoiding the use of shot mixed with wash water and properly cooled.
Un autre avantage obtenu réside dans le fait que les dalles de marbre, de granit ou de pierres agglomérées découpées par la machine suivant l'invention, présentent une surface pratiquement polie qui ne nécessite qu'une très légère opération de finition. Au surplus, le découpage effectué grâce aux lames diamantées permet de diminuer les coûts par suite de la récupéra- tion, dans des récipients de décantation, de l'eau qui assure le lavage immédiat des dalles, cette eau pouvant être ainsi recyclée.Another advantage obtained lies in the fact that the marble, granite or agglomerated stone slabs cut by the machine according to the invention have a practically polished surface which requires only a very slight finishing operation. In addition, the cutting carried out using diamond blades makes it possible to reduce the costs as a result of the recovery, in decanting vessels, of the water which ensures the immediate washing of the slabs, this water being thus able to be recycled.
Il doit d'ailleurs être entendu que la description qui précède n'a été donnée qu'à titre d'exemple et qu'elle ne limite nullement le domaine de l'invention dont on ne sortirait pas en remplaçant les détails d'exécution décrits par tous autres équivalents. It should moreover be understood that the foregoing description has been given only by way of example and that it in no way limits the field of the invention from which one would not depart by replacing the execution details described by all other equivalents.

Claims

R E V E N D I C A T I O N S
1. Machine pour le découpage de granits, marbres et pierres agglomérées, du genre comprenant un banc (1) sur lequel prend appui le bloc à découper qui est soumis à un mou¬ vement d'avance par des moyens appropriés, caractérisée en ce qu'elle comprend deux bâtis porte-lames (11, 12) dotés de mouvements alternatifs unidirectionnels orientés suivant des directions opposées dans des plans parallèles, les lames (13) de l'un (11) desdits bâtis se trouvant au niveau de l'espace qui sépare les lames adjacentes (14) de l'autre bâti (12), de façon à ce que les efforts appliqués au bloc à travailler soient toujours compensés et que ledit bloc puisse avancer le long de la machine sans nécessiter des moyens particuliers de fixation en dehors de son propre poids.1. Machine for cutting granites, marbles and agglomerated stones, of the type comprising a bench (1) on which the cutting block is supported which is subjected to a movement in advance by suitable means, characterized in that '' it comprises two blade-holder frames (11, 12) provided with reciprocating unidirectional movements oriented in opposite directions in parallel planes, the blades (13) of one (11) of said frames being at the level of the space which separates the adjacent blades (14) from the other frame (12), so that the forces applied to the working block are always compensated and so that said block can advance along the machine without requiring special fixing means apart from its own weight.
2. Machine suivant la revendication 1, caractérisée en ce qu'elle comprend deux bielles (29) animées d'un mouvement alternatif par des manivelles (30) pour la mise en mouvement de l'un (12) des bâtis ^tandis que l'autre (11) est mis en mouvement alternatif suivant une direction opposée par des fléaux (31) qui oscillent sur un arbre central (45) supporté par un palier (46) lui-même monté sur une traverse (47), lesdits fléaux étant reliés aux bâtis par l'intermédiaire de bielles (37). 2. Machine according to claim 1, characterized in that it comprises two connecting rods (29) driven in an alternating movement by cranks (30) for setting in motion one (12) of the frames ^ while the 'other (11) is reciprocated in an opposite direction by flails (31) which oscillate on a central shaft (45) supported by a bearing (46) itself mounted on a crosspiece (47), said flails being connected to the frames by means of connecting rods (37).
3. Machine suivant l'une quelconque des revendications 1 et 2, caractérisée en ce qu'une série de fléaux (19, 20, 21 et 22) montés sur des pivots logés dans les montants latéraux de la machine, assurent un mouvement alternatif correct» des bâtis le long de plans inclinés parallèles convenablement aménagés, le découpage unidirectionnel étant déterminé par deux cames (41) qui agissent sur des fléaux (42) associés à des ressorts de rappel (28) afin de mettre en prise l'un des deux bâtis (11, 12) sur le bloc à découper tandis que l'autre remonte légèrement en s' écartant du premier. 3. Machine according to any one of claims 1 and 2, characterized in that a series of flails (19, 20, 21 and 22) mounted on pivots housed in the lateral uprights of the machine, ensure correct alternating movement »Frames along suitably arranged parallel inclined planes, the unidirectional cutting being determined by two cams (41) which act on flails (42) associated with return springs (28) in order to engage one of the two frames (11, 12) on the block to be cut while the other rises slightly away from the first.
4. Machine suivant l'une quelconque des revendications 1 à 3, caractérisée en ce que les dalles de marbres obtenues sont directement lavées avec de l'eau qui est ensuite récupérée dans des réservoirs de décantation pour être recyclée, sans adjonction de grenaille de matière dure du fait que les lames de coupe (13) et (14) sont du type à plaquettes diamantées.4. Machine according to any one of claims 1 to 3, characterized in that the marble slabs obtained are directly washed with water which is then recovered in settling tanks to be recycled, without adding shot material lasts because the blades cutting (13) and (14) are of the diamond insert type.
5. Machine suivant la revendication 4, caractérisée en ce que les lames (13) de l'un (11) des bâtis sont disposées entre les lames (14) de l'autre bâti (12), afin de permettre le découpage de dalles d'épaisseur réduite et d'assurer l'équilibra¬ ge parfait des efforts appliqués au bloc en cours de travail. 5. Machine according to claim 4, characterized in that the blades (13) of one (11) of the frames are arranged between the blades (14) of the other frame (12), in order to allow the cutting of slabs of reduced thickness and of ensuring perfect equilibra¬ ge of the forces applied to the block during work.
EP86901119A 1985-01-25 1986-01-25 Alternating saw with two blade-holding frames Withdrawn EP0210246A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT85506/85A IT1187497B (en) 1985-01-25 1985-01-25 DOUBLE MULTI-BLADE FRAME WITH UNIDIRECTIONAL ALTERNATIVE MOVEMENTS OPPOSED FOR THE WITH DIAMOND BLADES OF THIN SLABS OF GRANITE, MARBLE OR AGGLOMERATED
IT8550685 1985-01-25

Publications (1)

Publication Number Publication Date
EP0210246A1 true EP0210246A1 (en) 1987-02-04

Family

ID=11327178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86901119A Withdrawn EP0210246A1 (en) 1985-01-25 1986-01-25 Alternating saw with two blade-holding frames

Country Status (4)

Country Link
EP (1) EP0210246A1 (en)
AU (1) AU5391186A (en)
IT (1) IT1187497B (en)
WO (1) WO1986004295A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT93025A (en) * 1990-02-01 1991-11-12 Armando Pedro Luis MACHINE FOR SAWING STONE BLOCKS WITH DIAMOND TOOL
AT402271B (en) * 1995-04-24 1997-03-25 Ave Umwelttechnik Gmbh FRAME SAW
CZ283541B6 (en) * 1996-03-06 1998-04-15 Trimex Tesla, S.R.O. Process of cutting ingots from hard materials to plates and a saw for making the same
CN105291281B (en) * 2015-11-02 2017-04-05 哈密市祥昊工贸有限公司 Pearlite heat-insulation plate embryo multi-bit cutting machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1256424A (en) * 1960-05-06 1961-03-17 Sawing machine, especially for stone and similar materials
DE1300863B (en) * 1963-05-30 1969-08-07 Siguda Georg Device for transporting a stone block through a vertical saw frame

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8604295A1 *

Also Published As

Publication number Publication date
WO1986004295A1 (en) 1986-07-31
AU5391186A (en) 1986-08-13
IT1187497B (en) 1987-12-23
IT8585506A0 (en) 1985-01-25

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