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1. (WO2017002035) APPAREIL ET PROCÉDÉ DE DÉCOUPE DE PLAQUES DE PORCELAINE
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS

1 . An apparatus for cutting slabs made of porcelain or like materials, comprising a support and blocking plane (P) of at least a slab (L), and at least a cutting group (1 ) of the slab, arranged superiorly thereof, and comprising rotary tools (U) associated to a carriage (C) mobile along a parallel direction (D) to the support plane (P); means being included for moving the tools (U), independently of one another, in a perpendicular direction (K) to the direction (D), between two end positions, respectively an active neared position for working on the slab and a non-active distanced position, raised from the slab, characterised in that the carriage (C) comprises at least two of the tools (1 1 ) and (12) arranged one following another and on a same vertical cutting plane and configured such as to carry out, on the slab, a complementary cutting action, in which: - the first tool (1 1 ) is configured, in the active neared position thereof, and has, where the carriage (C) moves in an entering direction (V1 ) on the slab to be worked, a clockwise rotation direction (VO) of attack on the panel, incising the slab on the upper surface thereof, in entry, with an aim of not causing chipping in entry on the slab; the second tool (12) being positioned in the distanced position thereof;

- following entry on the slab by the first tool (1 1 ), the second tool (12) is configured in the neared position thereof, and has an anticlockwise rotation direction (VAO) with an aim of increasing the incision and the cut, so as to avoid chipping in an exit step of the second tool (12) from the slab, the first tool (1 1 ) being successively positioned in the distanced position thereof.

2. The apparatus for cutting porcelain slabs according to the first claim, wherein the cutting group (1 ) comprises a third tool (13) arranged downstream of the preceding tools with respect to the advancing direction (V1 ) and acting on the same vertical plane, configured so as to carry out, in the neared position thereof and with the entry achieved on the slab by the second tool (12), a cut, completing the cut for a whole thickness of the slab.

3. The apparatus according to the preceding claim, wherein the third tool (13) has a clockwise rotation direction (VO).

4. The apparatus according to claim 2, wherein the third tool (13) has an anticlockwise rotation direction (VAO).

5. The apparatus according to the first claim, comprising a second cutting group (1 ) having like characteristics to those of the first cutting group, symmetrically arranged below the first group and the support plane (P) of the panel; the first and the second group operating in combination and summing effects thereof on the cutting of the slab or panel.

6. The apparatus according to any one of the preceding claims, wherein at least one of the tools (U) has a bevelled configuration (SM) in section.

7. A method for cutting porcelain slabs (L), arranged on a support and blocking plane (P) of at least a slab (L), by means of at least a cutting group (1 ) comprising rotary tools (U) associated to a carriage (C) mobile along a parallel direction (D) to the support plane (P); the tools (U) being mobile, independently of one another, in a perpendicular direction (K) to the direction (D), between two end positions, respectively an active neared position for working on the slab and a non-active distanced position, raised from the slab, characterised in that it comprises following steps:

- activating at least a first tool (1 1 ) configured, in the active neared position thereof, and having, where the carriage (C) moves in an entering direction (V1 ) on the slab to be worked, a clockwise rotation direction (VO) of attack on the panel, incising the slab on the upper surface thereof, in entry, with an aim of not causing chipping in entry on the slab; the second tool (12) being positioned in the distanced position thereof;

- following entry on the slab by the first tool (1 1 ), activating at least a second tool (12) configured in the neared position thereof and having an anticlockwise rotation direction (VAO) with an aim of increasing the incision and the cut, so as to avoid chipping in an exit step of the second tool (12) from the slab, the tools (1 1 ) and (12) being successively

positioned one following another and on the same vertical cutting plane, so as to carry out, on the slab, a complementary cutting action;

- subsequent de-activation of the first tool (1 1 ) in the distanced position thereof.

8. The method according to the preceding claim, wherein the cutting group (1 ) comprises a third tool (13) arranged downstream of the preceding tools with respect to the advancing direction (V1 ) and acting on the same vertical plane, characterised in that it carries out, in the neared position thereof and with the entry achieved on the slab by the second tool (12), a cut, completing the cut for a whole thickness of the slab.