ANTI-GRAVIT CONTAINMENT DEVICE FOR A SURFACE TREATMENT MACHINE AND SURFACE TREATMENT MACHINE CONTAINING THIS DEVICE

Abstract

Containment device (1) intended to contain sand in a surface treatment machine (120), said machine (120) comprising a plurality of walls (51 a, 51 b) which define a working space (51 c) for an object (160) to be treated, characterized in that said device (1) comprises: - at least one support body (4) which can be coupled to one of the walls (51a, 51b);- a plurality of flexible elements (3), at least one of which comprises at least one part configured as a helical spring extending around a central reference axis, each of the elements (3) comprising a first end part (3a) coupled to the support body (4) and a second end part (3b), opposite to the first, adapted to take, after coupling of the support body (4) to said wall (51 a, 51 b), a protruding position above the workspace, in which said elements (3) are coupled to the support body (4) in an arrangement defining a plurality of overlapping planes (101, 102, 103) of said elements (3) in an overlapping direction (300).