Abstract: The present invention concerns an apparatus for laser or plasma cutting of pieces of laminar material, comprising a cutting station, comprising a first support structure and at least a laser or plasma cutting head which is associated with the first support structure and which is movable in relation thereto within an operating area; and a positioning element for positioning at least a portion of the laminar material in the operating area on a cutting plane. The positioning element may consist of a conveyor belt of the spike bed type. The apparatus may further comprise a first closing device suitable to close a first opening into the operating area and a second closing device suitable to close a second opening of the operating area. The positioning element may be associated with a second support structure independent of the first support structure. The first and second closing devices may also be associated with a support structure that is independent of the first support structure.

Abstract: A sheet metal bending machine includes a sheet metal presser defining a first support surface supporting a first sheet metal portion, a bending punch movable with respect to the first support surface between a passive position, in which it is raised with respect to the first support surface, and an active position, in which it is pressed against the first support surface to lock the first sheet metal portion on the sheet metal presser with a punch edge, and a bending die defining a second support surface. The presser and the die are movable with respect to one another substantially in parallel with a direction transverse to the first and second bending edges to switch from the partial to a complete sheet metal bending configuration, in which the distance is reduced to press partially curved section towards said punch edge, thereby deforming it further and increasing the curvature of sheet.

Abstract: A closure device for a chamber housing a laser units for cutting a sheet metal strip includes, in proximity of an exit slit of the strip to be machined, a bar arranged transversely to the axis of advancement of the strip, and having, at the lower edges of the major side surfaces, longitudinal edges of a U-folded plate bound thereto. The plate has a plurality of transverse slots ending before its edges. An actuator provided for a vertical movement of the bar.

Abstract: A sheet metal bending machine includes a sheet metal presser defining a first support surface supporting a first sheet metal portion, a bending punch movable with respect to the first support surface between a passive position, in which it is raised with respect to the first support surface, and an active position, in which it is pressed against the first support surface to lock the first sheet metal portion on the sheet metal presser with a punch edge, and a bending die defining a second support surface. The presser and the die are movable with respect to one another substantially in parallel with a direction transverse to the first and second bending edges to switch from the partial to a complete sheet metal bending configuration, in which the distance is reduced to press partially curved section towards said punch edge, thereby deforming it further and increasing the curvature of sheet.

Abstract: The present invention concerns an apparatus for laser or plasma cutting of pieces of laminar material, comprising a cutting station, comprising a first support structure and at least a laser or plasma cutting head which is associated with the first support structure and which is movable in relation thereto within an operating area; and a positioning element for positioning at least a portion of the laminar material in the operating area on a cutting plane. The positioning element may consist of a conveyor belt of the spike bed type. The apparatus may further comprise a first closing device suitable to close a first opening into the operating area and a second closing device suitable to close a second opening of the operating area. The positioning element may be associated with a second support structure independent of the first support structure. The first and second closing devices may also be associated with a support structure that is independent of the first support structure.

Abstract: A closure device for a chamber housing a laser units for cutting a sheet metal strip includes, in proximity of an exit slit of the strip to be machined, a bar arranged transversely to the axis of advancement of the strip, and having, at the lower edges of the major side surfaces, longitudinal edges of a U-folded plate bound thereto. The plate has a plurality of transverse slots ending before its edges. An actuator provided for a vertical movement of the bar.

Abstract: The invention relates to a roller shutter box comprising an upper profile 10 and a lower profile 20, detachably connected to the upper profile by means of an extremal coupling portion 21 which engages a housing seat 11 made at an extremal portion 10? of the upper profile, the latter portion having a substantially Z-shaped cross-section. The housing seat 11 is delimited in particular by an angled end portion 15 which defines with the main body 12 of the upper profile the access opening 16 to the seat. The coupling portion comprises a tongue 23 which engages the housing seat in catching relation. The angled end portion defines a flat surface 18 facing the seat and forms an acute angle a in relation to the perpendicular to a plane t1 which is tangent to the main body 12. The coupling portion has two humps 24, 25 of opposed concavity and sized so that one hump touches the angled end portion, while the other touches the main body.

Abstract: For forming support structures for false ceilings, an inverted T main runner includes a central web extending from an upper tube and terminating in two horizontal flanges, wherein each end of the web has two parallel longitudinal cuts defining an elastically deformable band terminating in a depressed seat projecting from the web surface, such seat being provided with a tooth facing the web. A substantially rectangular tab for engagement in the depressed seat of the adjacent main runner is also provided, such tab (having a cut engagable by the tooth of the adjacent main runner when the tab is inserted into the depressed seat.

Abstract: The invention relates to a profiled bar 4 with a “T” section comprising a rib 24 and a plate 28. The profiled bar 4 has, on at least one end 12, 16, an attachment element 20 suitable for engaging with a further profiled bar 4?. The rib comprises at least one coupling aperture shaped to house said attachment element 20, which comprises a base 40 for fixing to the rib, projecting at least partially from the profiled bar 4 with one free end 44, and a tongue 48 flexibly elastic and coupled to the fixing base. The tongue 48 is obtained through shearing and bending of a portion of the fixing base 40, so as to form an angle of incidence with the fixing base 40 itself and is provided with a pair of recesses 51, 52 which define an attachment head 50. The coupling aperture 28 defines a first pair of projections 31, 32 suitable for engaging with the recesses 51, 52 to hold the attachment head 50 to the rib, said projections 31, 32 being positioned in opposite positions to a longitudinal centre line plane L-L of the rib.

Abstract: The invention relates to a profiled bar 4 with a “T” section comprising a rib 24 and a plate 28. The profiled bar 4 has, on at least one end 12, 16, an attachment element 20 suitable for engaging with a further profiled bar 4?. The rib comprises at least one coupling aperture 36 shaped to house said attachment element 20, which comprises a base 40 for fixing to the rib, projecting at least partially from the profiled bar 4 with one free end 44, and a tongue 48 flexibly elastic and coupled to the fixing base. The tongue 48 is bent towards the fixing base at the free end 44, so as to form an angle of incidence with the fixing base and is provided with a pair of recesses 51, 52 which define an attachment head 50. The coupling aperture 28 defines a first pair of projections 31, 32 suitable for engaging with the recesses 51, 52 to hold the attachment head 50 to the rib, said projections 31, 32 being positioned in opposite positions to a longitudinal centre line plane L-L of the rib.

Abstract: A section with a “T” profile comprising a rib and a plate which extends from a first to a second end. The section having, in proximity of at least one of said ends, a coupling element suitable to engage with a further section, and the rib comprising at least one engagement aperture shaped to house said coupling element. Advantageously, the coupling element comprises an attachment base to the rib which projects at least partially from the section with a free end, and a tongue elastically flexible and connected to the attachment base. The tongue is bent towards the attachment base at said free end so as to form an angle of incidence with the attachment base, and is provided with a coupling hole suitable to engage with at least a first tooth of the engagement aperture.

Abstract: A section with a “T” profile comprising a rib and a plate which extends from a first to a second end. The section having, in proximity of at least one of said ends, a coupling element suitable to engage with a further section, and the rib comprising at least one engagement aperture shaped to house said coupling element. Advantageously, the coupling element comprises an attachment base to the rib which projects at least partially from the section with a free end, and a tongue elastically flexible and connected to the attachment base. The tongue is bent towards the attachment base at said free end so as to form an angle of incidence with the attachment base, and is provided with a coupling hole suitable to engage with at least a first tooth of the engagement aperture.

Abstract: A method for producing expanded metal profiles, consisting of subjecting a metal strip of width less than the development of the profile to be produced to the following operations: —forming longitudinal slits in at least that longitudinal band which is to form the central web of the profile, —bending the edges of the slits, —profiling said strip, —transversely stretching that band containing the slits, —pressing areas of said central web in correspondence with said stretched band to displace them external to the plane of said web, characterised by subjecting the bent edges to drawing to obtain radiused edging having the tangent to the free edge forming an angle not less than 90° to the surface of the strip.

Abstract: A method for producing expanded metal profiles, consisting of subjecting a metal strip of width less than the development of the profile to be produced to the following operations:—forming longitudinal slits in at least that longitudinal band which is to form the central web of the profile,—bending the edges of the slits,—profiling said strip,—transversely stretching that band containing the slits,—pressing areas of said central web in correspondence with said stretched band to displace them external to the plane of said web, characterised by subjecting the bent edges to drawing to obtain radiused edging having the tangent to the free edge forming an angle not less than 90° to the surface of the strip.

Abstract: An assembly machine forms structural elements for false ceilings. Structural elements are cut to size and sent to two series of lateral stations. A press forms inserts which are applied to the ends of the structural elements.