ITTO20100648A1

ITTO20100648A1 - MOBILE SAWING PORTAL WITH AT LEAST ONE WIRE TOOL FOR CUTTING MATERIAL IN BLOCKS

Info

Publication number: ITTO20100648A1
Application number: IT000648A
Authority: IT
Inventors: Emilio Brocco
Original assignee: Co Fi Plast Srl
Priority date: 2010-07-28
Filing date: 2010-07-28
Publication date: 2012-01-29
Also published as: IT1401366B1

Description

â€œPORTALE MOBILE DI SEGATRICE CON ALMENO UN UTENSILE A FILO PER IL TAGLIO DI MATERIALE IN BLOCCHIâ€ â € œMOVABLE SAWING PORTAL WITH AT LEAST ONE WIRE TOOL FOR CUTTING MATERIAL IN BLOCKSâ €

TESTO DELLA DESCRIZIONE TEXT OF THE DESCRIPTION

La presente invenzione concerne un portale mobile di segatrice con almeno un utensile a filo per il taglio di materiale in blocchi. The present invention relates to a mobile sawing machine portal with at least one wire tool for cutting block material.

Sono note macchine segatrici di materiale in blocchi, particolarmente di materiale lapideo, comprendenti almeno un utensile di taglio, costituito da un cosiddetto filo diamantato, avvolto ad anello chiuso su almeno due ruote o pulegge, una motrice e lâ€™altra condotta, per eseguire il taglio di un blocco di materiale. In alcune di tali segatrici, le ruote o pulegge sono sopportate da una struttura a portale, che Ã ̈ mobile in direzione verticale, in modo che ciascun filo di taglio Ã ̈ contenuto in un rispettivo piano verticale e, mentre Ã ̈ fatto circolare, esegue un corrispondente taglio passante in un sottostante blocco di materiale, quando la struttura a portale compie una corsa discendente. Sawing machines for block material, particularly stone material, are known, comprising at least one cutting tool, consisting of a so-called diamond wire, wound in a closed loop on at least two wheels or pulleys, a drive and the other duct, to perform cutting a block of material. In some of these saws, the wheels or pulleys are supported by a portal structure, which is movable in the vertical direction, so that each cutting wire is contained in a respective vertical plane and, while it is made to circulate, performs a corresponding through cut in an underlying block of material, when the portal structure makes a downward stroke.

Eâ€™ anche nota una macchina segatrice del tipo suddetto, in cui una pluralitÃ di fili di taglio sono avvolti ad anello chiuso e fatti circolare ciascuno tra una rispettiva puleggia motrice ed almeno una rispettiva puleggia condotta (oppure tra un tamburo di comando e almeno un tamburo condotto) ed in cui ciascun filo di taglio Ã ̈ disposto in un rispettivo piano, sostanzialmente verticale e parallelo ai piani in cui giacciono gli altri fili di taglio. E' cosÃ¬ determinata la distanza reciproca tra fili di taglio adiacenti e, quindi, lo spessore delle lastre tagliate da un blocco di materiale mediante i fili medesimi, quando la struttura a portale che sopporta le pulegge (o i tamburi) compie una corsa discendente. A sawing machine of the above type is also known, in which a plurality of cutting wires are wound in a closed loop and each made to circulate between a respective driving pulley and at least one respective driven pulley (or between a drive drum and at least one driven drum) and in which each cutting wire is arranged in a respective plane, substantially vertical and parallel to the planes in which the other cutting wires lie. The mutual distance between adjacent cutting wires is thus determined and, therefore, the thickness of the slabs cut from a block of material by the same wires, when the portal structure supporting the pulleys (or drums) makes a downward stroke.

Uno scopo della presente invenzione Ã ̈ di provvedere un portale mobile di segatrice con almeno un utensile a filo per il taglio di materiale in blocchi, che sia di struttura leggera, robusta, anche di grandi dimensioni e semplificata, pur mantenendo una elevata rigiditÃ strutturale durante lâ€™operazione di taglio. An object of the present invention is to provide a mobile sawing machine portal with at least one wire tool for cutting block material, which is of a light, robust, even large and simplified structure, while maintaining a high structural rigidity during the cutting operation.

Un altro scopo dellâ€™invenzione Ã ̈ di provvedere un portale mobile di segatrice come specificato, che richieda per la sua realizzazione un limitato dispendio tecnico e economico. Another object of the invention is to provide a mobile sawing machine portal as specified, which requires a limited technical and economic expenditure for its realization.

In vista di tali scopi, la presente invenzione provvede un portale mobile di segatrice con almeno un utensile a filo per il taglio di materiale in blocchi, la cui caratteristica essenziale forma oggetto della rivendicazione 1. In view of these purposes, the present invention provides a mobile sawing machine portal with at least one wire tool for cutting block material, the essential feature of which forms the subject of claim 1.

Ulteriori caratteristiche vantaggiose sono descritte nelle rivendicazioni dipendenti. Further advantageous features are described in the dependent claims.

Le rivendicazioni suddette si intendono qui integralmente riportate. The aforementioned claims are intended as fully reported here.

La presente invenzione risulterÃ maggiormente dalla descrizione dettagliata che segue, con riferimento al disegno allegato, fornito a solo titolo di esempio, in cui: The present invention will become clearer from the detailed description that follows, with reference to the attached drawing, provided by way of example only, in which:

- la fig.1 Ã ̈ una vista schematica ed in elevazione del portale mobile di segatrice con una pluralitÃ di utensili a filo per il taglio di materiale in blocchi, secondo un esempio di realizzazione dellâ€™invenzione, in cui Ã ̈ illustrato anche un blocco di materiale, ad esempio lapideo, al termine dellâ€™operazione di taglio di una lastra; - fig. 1 is a schematic and elevation view of the mobile portal of the saw with a plurality of wire tools for cutting block material, according to an example of embodiment of the invention, in which a block of material, such as stone, at the end of the cutting operation of a slab;

- la fig. 2 Ã ̈ una vista in pianta dallâ€™alto del portale mobile di fig. 1, in cui perÃ² sono omessi i fili di taglio, per semplificazione illustrativa; - fig. 2 is a top plan view of the mobile portal of fig. 1, in which, however, the cutting threads are omitted, for illustrative simplification;

- la fig.3 Ã ̈ una vista in sezione, a scala maggiore, secondo la linea A-A di fig. 2. - fig. 3 is a sectional view, on a larger scale, along the line A-A of fig. 2.

Con riferimento al disegno, con 10 Ã ̈ indicato nel suo insieme il portale mobile di segatrice, secondo il suddetto esempio di realizzazione dellâ€™invenzione. With reference to the drawing, 10 indicates as a whole the mobile portal of the sawing machine, according to the aforementioned example of embodiment of the invention.

Detto portale mobile 10 comprende un telaio 10.1 (fig. 2) di supporto di quattro tamburi 11, ad assi sostanzialmente orizzontali, tra i quali sono avvolti e fatti circolare una pluralitÃ di fili di taglio ad anello chiuso 12 (fig. Said mobile portal 10 comprises a frame 10.1 (fig. 2) for supporting four drums 11, with substantially horizontal axes, between which a plurality of closed-loop cutting wires 12 are wound and made to circulate (fig.

1). A tal fine, la faccia esterna di detti tamburi 11 presenta una pluralitÃ di gole circonferenziali (non illustrate), in cui possono essere ricevuti rispettivi fili di taglio 12, ad esempio dei cosiddetti fili diamantati, secondo una tecnica nota e qui non ulteriormente descritta. Dei detti quattro tamburi 11, uno Ã ̈ azionato mediante motore, mentre gli altri tre sono condotti, per il tramite degli stessi fili di taglio. 1). To this end, the outer face of said drums 11 has a plurality of circumferential grooves (not shown), in which respective cutting wires 12, for example so-called diamond wires, can be received according to a known technique and not further described here. Of said four drums 11, one is driven by a motor, while the other three are driven by the cutting wires themselves.

Detto telaio 10.1 comprende sostanzialmente una struttura reticolare 13, includente due robuste travi piene metalliche 14, rispettivamente disposte sui fianchi esterni della struttura reticolare 13 stessa. Dette travi 14 sono piegate alle loro estremitÃ e presentano ciascuna una conformazione ad â€œUâ€ capovolta (fig. 1), in cui i rami estremi 14.1 sono tra loro divergenti. Dette travi 14 sono rigidamente collegate tra loro, in corrispondenza del loro ramo intermedio 14.2, rettilineo orizzontale, mediante una struttura a traliccio metallico 15, formata da traverse 15.1 e rinforzi diagonali 15.2 (fig. Said frame 10.1 substantially comprises a reticular structure 13, including two solid metal beams 14, respectively arranged on the external sides of the reticular structure 13 itself. Said beams 14 are bent at their ends and each have an inverted "U" conformation (fig. 1), in which the extreme branches 14.1 diverge from each other. Said beams 14 are rigidly connected to each other, in correspondence with their intermediate branch 14.2, horizontal straight, by means of a metal lattice structure 15, formed by crosspieces 15.1 and diagonal reinforcements 15.2 (fig.

2). Analoga struttura collega a coppie i rami estremi 14.1 opposti delle dette due travi 14. Dette travi 14 sopportano, tra coppie contrapposte dei detti loro rami estremi 14.1, rispettive coppie di detti tamburi 11, disposti ad altezze differenti da terra e tra i quali sono avvolti e fatti circolare i detti fili di taglio ad anello chiuso 12. 2). A similar structure connects in pairs the opposite extreme branches 14.1 of said two beams 14. Said beams 14 support, between opposite pairs of said their extreme branches 14.1, respective pairs of said drums 11, arranged at different heights from the ground and between which they are wound and circulating said closed-loop cutting wires 12.

Detto telaio 10.1 comprende inoltre un dispositivo pre-tenditore 16. Detto dispositivo pre-tenditore 16 include, per ciascuna trave 14, due rispettivi tiranti a fune pre-tesa 16.1 opposti, i quali sono vincolati ciascuno, con una loro estremitÃ , in prossimitÃ della estremitÃ libera di uno rispettivo di detti rami estremi 14.1 e sono disposti lungo lâ€™estradosso di detto stesso ramo 14.1 e di una corrispondente porzione del ramo intermedio rettilineo 14.2 di detta trave 14. I detti tiranti a fune pre-tesa 16.1 sono parzialmente alloggiati in una corrispondente scanalatura 14.12 provvista nella trave 14 (fig. 3). Nella porzione centrale di detto ramo intermedio 14.2 di ciascuna trave 14, i rispettivi due tiranti a fune pre-tesa 16.1 sono collegati, con la loro altra estremitÃ , rispetto a mezzi tenditori 17. Detti mezzi tenditori 17, qui semplicemente schematizzati, includono, ad esempio, dei mezzi a cilindro idraulico (non illustrati), collegati rispetto a corrispondenti mezzi idraulici di comando, che consentono di regolare e mantenere la tensione dei detti tiranti a fune 16.1 associati a ciascuna trave 14. I due tiranti a fune 16.1 opposti, associati a ciascuna trave 14, sono sottoposti ad una tensione tale da reagire agli sforzi applicati tramite detti fili di taglio 12 durante il taglio e tendenti a flettere e fare convergere tra loro i detti rami estremi 14.1 di ciascuna trave 14, mantenendo sostanzialmente inalterata la conformazione della trave stessa anche durante lâ€™operazione di taglio. Said frame 10.1 also comprises a pre-tensioning device 16. Said pre-tensioning device 16 includes, for each beam 14, two respective tie rods with opposed pre-tensioned cable 16.1, which are each constrained, with one of their ends, in proximity to the free end of a respective one of said extreme branches 14.1 and are arranged along the extrados of said same branch 14.1 and of a corresponding portion of the straight intermediate branch 14.2 of said beam 14. The said pre-tensioned rope tie rods 16.1 are partially housed in a corresponding groove 14.12 provided in the beam 14 (fig. 3). In the central portion of said intermediate branch 14.2 of each beam 14, the respective two pre-tensioned cable tie rods 16.1 are connected, with their other ends, with respect to tensioning means 17. Said tensioning means 17, here simply schematized, include, for example for example, hydraulic cylinder means (not shown), connected with respect to corresponding hydraulic control means, which allow to adjust and maintain the tension of said cable tie rods 16.1 associated with each beam 14. The two opposite cable tie rods 16.1, associated to each beam 14, are subjected to a tension such as to react to the stresses applied by said cutting wires 12 during cutting and tending to bend and converge the said extreme branches 14.1 of each beam 14, while maintaining substantially unchanged the conformation of the beam itself even during the cutting operation.

Si noterÃ che detti due tiranti a fune pre-tesa 16.1 di ciascuna trave 14 sono disposti sostanzialmente secondo il piano mediano verticale longitudinale della trave stessa, che Ã ̈ sostanzialmente parallelo ai piani di taglio del blocco di materiale B da tagliare, in cui sono rispettivamente disposti i fili di taglio 12, in modo che detto telaio di sopporto 10.1 Ã ̈ strutturalmente irrigidito, mediante i tiranti a fune pre-tesa 16.1 delle travi 14, per resistere particolarmente bene agli sforzi applicati dai fili di taglio stessi. It will be noted that said two pre-tensioned cable tie rods 16.1 of each beam 14 are arranged substantially according to the longitudinal vertical median plane of the beam itself, which is substantially parallel to the cutting planes of the block of material B to be cut, in which they are respectively the cutting wires 12 are arranged so that said support frame 10.1 is structurally stiffened, by means of the pre-tensioned cable tie rods 16.1 of the beams 14, to resist particularly well the stresses applied by the cutting wires themselves.

Si noterÃ , inoltre, che ciascuno dei rami estremi 14.1 di ogni trave 14 del telaio di supporto 10.1 comprende un rispettivo dispositivo tensionatore, schematizzato in 18, per la messa in corretta tensione dei fili di taglio 12. Ciascun dispositivo tensionatore 18 comprende, ad esempio, dei mezzi a cilindro idraulico collegati allâ€™albero di supporto di un corrispondente tamburo 11 ed i quali sono disposti e controllati, mediante mezzi di comando idraulico convenienti, in modo da variare selettivamente lâ€™altezza da terra dellâ€™albero stesso e quindi, corrispondentemente, la tensione dei fili di taglio 12 associati a detto tamburo 11. It will also be noted that each of the extreme branches 14.1 of each beam 14 of the support frame 10.1 comprises a respective tensioning device, schematised at 18, for putting the cutting wires 12 in correct tension. Each tensioning device 18 comprises, for example , hydraulic cylinder means connected to the support shaft of a corresponding drum 11 and which are arranged and controlled, by means of suitable hydraulic control means, so as to selectively vary the height from the ground of the shaft itself and hence, correspondingly, the tension of the cutting threads 12 associated with said drum 11.

Naturalmente, numerose varianti potranno essere apportate rispetto a quanto descritto ed illustrato, senza per questo uscire dall'ambito dell'invenzione e quindi dal dominio della presente privativa industriale. Naturally, numerous variations may be made with respect to what has been described and illustrated, without thereby departing from the scope of the invention and therefore from the domain of the present industrial property.

CosÃ¬, ad esempio, sebbene non sia illustrato nel disegno allegato, nel caso ad esempio di una macchina segatrice del tipo specificato con un solo filo di taglio, il portale mobile secondo lâ€™invenzione comprende un telaio di supporto di quattro pulegge, includente una unica trave piegata alle sue estremitÃ e presentante una conformazione ad â€œUâ€ capovolta, in cui i rami estremi sono tra loro divergenti. In tal caso, ciascun ramo estremo di detta trave sopporta una rispettiva coppia di pulegge, disposte tra loro a differenti altezze da terra. Detto portale mobile comprende inoltre un dispositivo pre-tenditore che include due tiranti a fune metallica pre-tesa, opposti, i quali sono vincolati ciascuno con una loro estremitÃ in prossimitÃ della estremitÃ libera di uno rispettivo dei detti rami estremi e sono disposti lungo lâ€™estradosso di detto stesso ramo e di una corrispondente porzione del ramo intermedio, rettilineo orizzontale, di detta trave. Nella porzione centrale di detto ramo intermedio della trave, i detti due tiranti a fune sono collegati, con la loro altra estremitÃ , rispetto a mezzi tenditori. In tal caso, detti mezzi tenditori possono anche consistere in un semplice arridatoio, ossia un manicotto filettato, con filettature opposte alle due estremitÃ , il quale ruotando avvicina o allontana due viti che in esso imboccano e sono collegate con le altre estremitÃ dei detti tiranti a fune pre-tesa. Thus, for example, although it is not illustrated in the attached drawing, in the case for example of a sawing machine of the specified type with a single cutting wire, the mobile portal according to the invention comprises a supporting frame of four pulleys, including a single beam bent at its ends and presenting an inverted â € œUâ € conformation, in which the extreme branches are divergent. In this case, each extreme branch of said beam supports a respective pair of pulleys, arranged between them at different heights from the ground. Said mobile portal also comprises a pre-tensioning device which includes two opposing pre-tensioned wire rope tie-rods, which are each linked with one end near the free end of a respective one of said extreme branches and are arranged along the ™ extrados of said same branch and of a corresponding portion of the intermediate, straight horizontal branch of said beam. In the central portion of said intermediate branch of the beam, said two cable tie rods are connected, with their other ends, with respect to tensioning means. In this case, said tensioning means can also consist of a simple turnbuckle, that is a threaded sleeve, with opposite threads at the two ends, which by rotating approaches or moves away two screws which enter into it and are connected with the other ends of said tie rods. pre-tensioned rope.

Dâ€™altra parte, detto telaio di supporto dei tamburi o pulegge su cui sono avvolti i fili di taglio puÃ² comprendere una o piÃ¹ travi di struttura qualsiasi: piena, cava, profilata, reticolare, e cosÃ¬ via. On the other hand, said frame supporting the drums or pulleys on which the cutting wires are wound can include one or more beams of any structure: solid, hollow, profiled, reticular, and so on.

Come risulta da quanto precede, la presente invenzione provvede un portale mobile di segatrice con almeno un utensile a filo per il taglio di materiale in blocchi, che permette di conseguire gli scopi esposti nella premessa, in modo semplice ed efficace. As it appears from the foregoing, the present invention provides a mobile sawing machine portal with at least one wire tool for cutting block material, which allows to achieve the objects set out in the introduction in a simple and effective way.

Claims

CLAIMS 1. Mobile portal (10) of a sawing machine with at least one wire tool (12), so-called cutting wire, for cutting block material (B), comprising a frame (10.1) for supporting a plurality of drums or pulleys (11), between which at least one cutting wire (12) is wound and made to circulate in a closed loop, characterized by the fact that said support frame (10.1) includes at least an overturned `` U '' beam (14), whose end branches (14.1) are divergent from each other and each support at least one respective drum or pulley (11), and by the fact that it further comprises a pre-tensioning device (16) of said at least one beam (14), including means tie rod (16.1) pre-tensioned cable, which are constrained with respect to the free end area of said divergent branches (14.1) of the beam itself, are arranged at least in part along the extrados of said beam (14) and are subjected, by means of tensioning means (17), to such a tension as to react to the applied stresses d during the cut by means of said at least one cutting wire (12) and tending to flex and converge the said extreme branches (14.1) of said at least one beam (14), keeping the conformation of the beam itself substantially unchanged even during the ™ cutting operation.

2. Mobile portal of sawing machine according to claim 1, characterized in that said support frame (10.1) comprises two beams (14), bent at their ends, each having an inverted "U" shape and whose extreme branches ( 14.1) are divergent from each other; and by the fact that said beams (14) are rigidly connected to each other and support, between opposite pairs of said their extreme branches (14.1) and / or their intermediate branches (14.2), respective pairs of said drums or pulleys (11), arranged at different heights from the ground and on which a plurality of closed-loop cutting wires (12) are wound and made to circulate.

3. Mobile portal of sawing machine according to claim 1 and / or 2, characterized in that said pre-tensioning device (16) includes, for each beam (14) of said support frame (10.1), two respective pre-tensioning cable -tense (16.1) opposite, each of which is linked, with one of its ends, in proximity to the free end of one of the respective extreme branches (14.1) and is arranged along the extrados of said same extreme branch (14.1 ) and a corresponding portion of the intermediate branch (14.2) of said beam (14).

4. Mobile portal of a sawing machine according to claim 3, characterized in that said tie rod means with pre-tensioned cable (16.1) are connected, with their other end, with respect to said tensioning means (17).

5. Mobile portal of sawing machine according to claim 1 and / or 4, characterized in that said tensioning means (17) include operating cylinder means, connected with respect to corresponding control means, which allow to regulate and maintain the tension of said pre-tensioned cable tie means (16.1) associated with each beam (14).

6. Mobile portal of sawing machine according to claim 1 and / or 4, characterized by the fact that said tensioning means include at least one threaded sleeve, with opposite threads at the two ends, which by rotating approaches or moves away two screws which enter into it and are connected with the other ends of the said pre-tensioned cable tie rods.

7. Mobile sawing machine portal according to one or more of the preceding claims, characterized in that said tie rod means (16.1) with pre-tensioned cable of said at least one beam (14) are arranged substantially according to the longitudinal vertical median plane of the beam itself , which is substantially parallel to the cutting planes of the block of material (B) to be cut, in which the said cutting wires (12) are respectively arranged, so that said support frame (10.1) is structurally stiffened to resist to the stresses applied by the cutting wires themselves.

8. Mobile portal of sawing machine according to claim 1, characterized in that said at least one beam (14) of said support frame (10.1) comprises at least one tensioning device (18), for putting in correct tension of said cutting wires (12).

9. Mobile portal of a sawing machine according to claim 7, characterized in that said tensioning device (18) comprises operating cylinder means, connected to a corresponding drum or pulley (11) and which are arranged and controlled, by corresponding means of control, so as to selectively vary the height from the ground of the tree itself and therefore, correspondingly, the tension of the cutting wires (12) associated with said drum or pulley (11).