Claims
- 1. Polishing machine for stone materials comprising a conveyor belt for slabs or strips to be polished, a beam made to oscillate on at least two transverse, fixed frames above the conveyor, a number of polishing heads, aligned in a row on the beam and oscillating with the beam, a process and control calculator for the polishing machine, wherein it has a second beam positioned parallel to the first beam, also equipped with a number of polishing heads, transversely aligned in a row with the polishing heads of the first beam, and made to oscillate synchronously with it, by means of adjustable coupling devices, that enable a distance between the rows of polishing heads on the first beam and on the second beam to be varied.
- 2. Polishing machine as claimed in claim 1, wherein it has braking mechanisms, kept in a locked position during work phase, to ensure that a mechanical coupling between the two beams is blocked.
- 3. Polishing machine as claimed in claim 2, wherein the adjustable coupling devices consisting of at least one pair of screw devices connected to each other and to the respective first and second beams, driven synchronously by transmission.
- 4. Polishing machine as claimed in claim 3, wherein a shuttle of the first beam is equipped with guide rails for the second beam.
- 5. Polishing machine as claimed in the previous claim 4, wherein the braking mechanisms act directly on the said guide rails connecting the two beams.
- 6. Polishing machine as claimed in claim 3, wherein each beam translates and is adjustable with respect to an intermediate point of a shuttle for the transverse oscillation on the frames on which they are supported and blocked, by means of the braking mechanisms, so as to define a precise distance between the rows of polishing heads of the said beams.
- 7. Polishing machine as claimed in claim 3, wherein both beams are able to translate directly on the said transverse frames on which they are supported; they are blocked with respect to each other by means of the said braking mechanisms acting on elements connected to the respective beams, so as to define a precise distance between the rows of polishing heads of the said beams.
- 8. Polishing machine as claimed in the previous claim 2, wherein the braking mechanisms are activated by remote control.
- 9. Polishing machine as claimed in claim 8, wherein the braking mechanisms consisting of at least one hydraulically or pneumatically controlled actuator for each extremity of the beam.
- 10. Polishing machine as claimed in claim 8, wherein the braking mechanisms consisting of at least one electrically controlled actuator for each extremity of the beam.
- 11. Polishing machine as claimed in claim 8, wherein a shuttle of the first beam is equipped with guide rails for the second beam.
- 12. Polishing machine as claimed in the previous claim 11, wherein the braking mechanisms act directly on the said guide rails connecting the two beams.
- 13. Polishing machine as claimed in claim 8, wherein each beam translates and is adjustable with respect to an intermediate point of a shuttle for the transverse oscillation on the frames on which they are supported and blocked, by means of the braking mechanisms, so as to define a precise distance between the rows of polishing heads of the said beams.
- 14. Polishing machine as claimed in claim 8, wherein both beams are able to translate directly on the said transverse frames on which they are supported; they are blocked with respect to each other by means of the said braking mechanisms acting on elements connected to the respective beams, so as to define a precise distance between the rows of polishing heads of the said beams.
- 15. Polishing machine as claimed in claim 2, wherein the braking mechanisms consisting of at least one hydraulically or pneumatically controlled actuator for each extremity of the beam.
- 16. Polishing machine as claimed in claim 2, wherein the braking mechanisms consisting of at least one electrically controlled actuator for each extremity of the beam.
- 17. Polishing machine as claimed in claim 2, wherein a shuttle of the first beam is equipped with guide rails for the second beam.
- 18. Polishing machine as claimed in the previous claim 17, wherein the braking mechanisms act directly on the said guide rails connecting the two beams.
- 19. Polishing machine as claimed in claim 2, wherein each beam translates and is adjustable with respect to an intermediate point of a shuttle for the transverse oscillation on the frames on which they are supported and blocked, by means of the braking mechanisms, so as to define a precise distance between the rows of polishing heads of the said beams.
- 20. Polishing machine as claimed in claim 2, wherein both beams are able to translate directly on the said transverse frames on which they are supported; they are blocked with respect to each other by means of the said braking mechanisms acting on elements connected to the respective beams, so as to define a precise distance between the rows of polishing heads of the said beams.
- 21. Polishing machine as claimed in claim 1, wherein the adjustable coupling devices consisting of at least one pair of screw devices connected to each other and to the respective first and second beams, driven synchronously by transmission.
- 22. Polishing machine as claimed in claim 21, wherein a shuttle of the first beam is equipped with guide rails for the second beam.
- 23. Polishing machine as claimed in the previous claim 22, wherein the braking mechanisms act directly on the said guide rails connecting the two beams.
- 24. Polishing machine as claimed in claim 21, wherein each beam translates and is adjustable with respect to an intermediate point of a shuttle for the transverse oscillation on the frames on which they are supported and blocked, by means of the braking mechanisms, so as to define a precise distance between the rows of polishing heads of the said beams.
- 25. Polishing machine as claimed in claim 21, wherein both beams are able to translate directly on the said transverse frames on which they are supported; they are blocked with respect to each other by means of the said braking mechanisms acting on elements connected to the respective beams, so as to define a precise distance between the rows of polishing heads of the said beams.
Priority Claims (1)
Number |
Date |
Country |
Kind |
MO2000A0046 |
Mar 2000 |
IT |
|
CROSS-REFERENCE TO RELATED APPLICATIONS
This is a continuation application which claims priority from PCT/IT01/00119, published in English, filed Mar. 12, 2001, based on Italian patent application MO2000A000046, filed Mar. 15, 2000, and also claims priority from Italian patent application MO2000A000046, filed Mar. 15, 2000.
US Referenced Citations (7)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0 120 588 |
Oct 1984 |
EP |
PCT WO 0054932 |
Sep 2000 |
WO |
Non-Patent Literature Citations (1)
Entry |
International Search Report for PCT/IT 01/00119, Jul. 5, 2001. |
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/IT01/00119 |
Mar 2001 |
US |
Child |
10/244040 |
|
US |