Marble or stone slab polishing machine provided with a rotating head mounted on a fulcrum
OwnerNicola Montresorinventor
Life of this patent
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Abstract
In comparison with the prior art the present machine offers many important advantages. Concerning the practicalness, the working processes are simpler and there is less wear and tear in the movable parts. Concerning the construction, the present machine avoids the utilization of the conventional supporting units needed to permit an angular movement along a curved path. As is known, the said supporting units are complex and costly. The peculiarity of the present invention is that a head holding unit (1) comprises a plurality of motorized spindles provided with respective polishing tools or grinders (3) and is mounted at its two ends on fulcrum-type supports (4). In the present case, the supports (4) are horizontal shafts disposed on ball bearings.
Claims20
Slab border polishing machine comprising:
- a supporting horizontal plane with a conveyor belt on which a slab to be worked is placed and conveyed progressively;
- a working unit with multiple heads provided with polishing grinders and arranged on a head supporting unit having two ends;
- said head supporting unit applied at its two ends onto fulcra which are represented by journals, the axes of which are parallel to the slab border working axis:
- said head supporting unit maintained in a lightened condition by a counter-balance assembly and operated, for its angular displacement, by a moving system which utilizes a draw carriage;
- and said carriage connected to the head supporting unit and is hanged among the links of a chain extended on a metal arc.
A slab border polishing machine comprising:
- a means for transporting a slab having a border working axis;
- a frame proximate the means for transporting a slab;
- head supporting unit having two ends;
- a plurality of heads with polishing grinders mounted to the head supporting unit;
- a fulcrum which rotatably mounts at least one end of the head supporting unit at a single point on the frame;
- a means for balancing the weight of the head supporting unit;
- and a carriage connected with the head supporting unit and handed among the links of a chain extended on a metal arc, said carriage permitting the movement of the head supporting unit.
A slab border polishing machine comprising:
- a means for transporting a slab having a border working axis;
- a frame proximate the means for transporting a slab;
- head supporting unit having two ends;
- a plurality of heads with polishing grinders mounted to the head supporting unit;
- a fulcrum which rotatably mounts at least one end of the head supporting unit at a single point on the frame, the fulcrum having an axis which is parallel to the border working axis;
- and a carriage assembly having a carriage which is connected to the head supporting unit, the carriage hanged among the links of a chain extended on a metal arc.
Dependencies are inferred from the claim text.