Apparatus and method to supply bars

1. Apparatus to supply bars (B) comprising a work plane ( 11 ) on which to position a bundle (F 1 -F 6 ) of said bars (B) and a removal device ( 15 ) configured to remove at least one bar (B) from said work plane ( 11 ) in order to transfer it to a destination station ( 16 ), wherein it comprises a plurality of containing units ( 22 a - 22 f ; 122 ) positioned, at least during their condition of use, above said work plane ( 11 ) and each configured to house a respective bundle (F 1 -F 6 ) of a determinate type of bar (B), and a plurality of movement means ( 26 ) each associated with a respective containing unit ( 22 a - 22 f ; 122 ) in order to take the latter into a first position in which one bundle (F 1 -F 6 ) of said bars (B) is delivered to or removed from said work plane ( 11 ), and into at least a second position in which said containing unit ( 22 a - 22 f ; 122 ) is located completely above said work plane ( 11 ).

2. Apparatus as in claim 1 , wherein said work plane ( 11 ) comprises a plurality of support devices ( 12 ) of the bars (B 1 -B 6 ) between which there are interspaces ( 13 ) suitable to at least partly house said containing units ( 22 a - 22 f ; 122 ) when they are in their first position.

3. Apparatus as in claim 1 , wherein said containing units ( 22 a - 22 f ; 122 ) are adjacent to each other in a transverse direction (T) to the extension in length of said work plane ( 11 ).

4. Apparatus as in claim 1 , wherein each containing unit ( 22 a - 22 f ; 122 ) comprises a plurality of containing elements ( 24 ) aligned with each other in a longitudinal direction (L) and each defines a support seating ( 25 ) configured to support part of said bundle (F 1 -F 6 ) of bars (B).

5. Apparatus as in claim 1 , wherein said containing units ( 22 a - 22 f ) are supported by a support structure ( 27 ).

6. Apparatus as in claim 1 , wherein said movement means ( 26 ) are configured to move the containing units ( 22 a - 22 f ) linearly, in a direction incident against said work plane ( 11 ).

7. Apparatus as in claim 6 , wherein linear guide members ( 31 ) are associated with each containing unit ( 22 a - 22 f ), having guide axes oriented incident to the work plane ( 11 ), and provided to guide the movement of the containing unit ( 22 a - 22 f ) from the first to the second position and vice versa, and each containing element ( 24 ) is provided with a support rod ( 32 ) installed sliding in the guide members ( 31 ).

8. Apparatus as in claim 1 , wherein said containing units ( 122 ) can be moved in their first position and second position by rotation around pivoting elements ( 140 ).

9. Method to supply bars that comprises positioning a bundle (F 1 -F 6 ) of bars (B) on a work plane ( 11 ) and removing at least one bar (B) from said work plane ( 11 ) with a removal device ( 21 ) in order to transfer it to a destination station ( 16 ), wherein it provides to position respective bundles (F 1 -F 6 ) of different types of bars (B) in a plurality of containing units ( 22 a - 22 f ; 122 ) and to keep, at least during a condition of use, said containing units ( 22 a - 22 f ; 122 ) above the work plane ( 11 ), wherein each containing unit ( 22 a - 22 f ; 122 ) is associated with respective movement means ( 26 ) to take said containing unit ( 22 a - 22 f ; 122 ) into a first position in which one bundle (F 1 -F 6 ) of said bars (B) is delivered to or removed from said work plane ( 11 ) and into at least a second position in which said containing unit ( 22 a - 22 f ; 122 ) is located completely above said work plane ( 11 ).

10. Method to supply bars as in claim 9 , wherein each containing unit ( 22 a - 22 f ; 122 ) is taken from its first to its second position by linear movement, or rotation around pivoting elements ( 140 ).