Abstract: In a sanding machine for sanding/finishing panels made of wood, metal or the like, an abrasive belt is moved so as to cause it to come into contact with a panel by a plurality of thrust elements, which are distributed inside the abrasive belt, and are moved perpendicularly to the panel by respective actuator cylinders, each of which has an output rod which is moveable between a lowered operating position and a raised rest position under the thrust of a pressurised gas supplied in a continuous manner to an upper chamber of the actuator cylinder and in a selective manner to a lower chamber of the actuator cylinder itself.

Abstract: In a machine and in a method for processing lateral edges of glass plates, plates of stone material, and plates of synthetic material, there is a group of gripping members of the plate configured to hold a plate in a horizontal position. The plate is caused to advance in a conveying longitudinal direction, in such a way as to bring a lateral edge of the plate to engage in succession an aligned series of grinding tools forming part of a stationary machining unit. In one example, the group of gripping members of the plate is rotatably carried around a vertical axis by a carriage, which is movable in the conveying longitudinal direction and in a transverse direction orthogonal to the longitudinal direction. The gripping members are carried by the carriage in such a way as to be adjustable in position, by means of electronically-controlled actuator devices, with respect to the carriage and relative to each other.

Abstract: A suction cup unit for gripping workpieces comprises a suction cup member carried by a support body within which a device is arranged for autonomously generating a vacuum to be applied to the suction cup member. The vacuum generator device includes an ejector-effect device, configured to generate a vacuum by supplying a flow of pressurized air through a nozzle, a reservoir of pressurized air connected to the nozzle, at least one electrically-operated valve for controlling the connection between the pressurized air reservoir and the nozzle, and a connecting line between the nozzle and the suction cup member, for transmitting a vacuum to the suction cup member when pressurized air is made to flow through the nozzle.

Abstract: A numeric-control work center can be used for carrying out cutting operations or grinding and/or milling operations on plates of stone, marble, or, in general, natural or synthetic stone material, or ceramic material. The work center comprises at least one working head movable along at least two mutually orthogonal horizontal axes on a work surface. The work surface includes a rigid supporting board, which defines a first planar supporting surface, and a series of sacrificial elements rigidly connected to the rigid supporting board. The sacrificial elements are arranged in positions spaced apart from each other and define a second supporting surface located at a higher level than the first planar supporting surface, so that a cutting tool coupled to the working head engraves the sacrificial elements, without interfering with the supporting board during a cutting operation on a plate resting on the sacrificial elements, whichever is the path followed by the cutting tool.

Abstract: A water-jet operating head for cutting materials by a high pressure hydro-abrasive jet includes a main portion which is to be carried by an operating machine movably along one or more axes and a focusing nozzle for ejecting the high pressure hydro-abrasive jet, carried by a support removably connected to the main portion of the head. This support also carries a primary nozzle with an orifice having a predetermined diameter arranged upstream of the focusing nozzle. The high pressure water jet is added with an abrasive agent which is fed through at least one connecting element at a mixing chamber interposed between the primary nozzle and the focusing nozzle. The connecting element is associated to the main portion of the head and the nozzle-carrying support is adapted to be slidably received within a cylindrical cavity of a main support forming part of the main portion of the head.

Abstract: A suction cup unit for gripping workpieces comprises a suction cup member carried by a support body within which a device is arranged for autonomously generating a vacuum to be applied to the suction cup member. The vacuum generator device includes an ejector-effect device, configured to generate a vacuum by supplying a flow of pressurized air through a nozzle, a reservoir of pressurized air connected to the nozzle, at least one electrically-operated valve for controlling the connection between the pressurized air reservoir and the nozzle, and a connecting line between the nozzle and the suction cup member, for transmitting a vacuum to the suction cup member when pressurized air is made to flow through the nozzle.

Abstract: A method and device useful for material removal from large plate-shaped materials, for example machining and polishing of glass and stone. The invention includes a workstation having arrays of roller and suction cups which are selectively used to transport and secure a plate positioned in the workstation. An imaging device collects data on a true position of the plate in the workstation and compares the real position to a design or ideal position to determine a difference of position. An electronic control system calculates the difference and modifies the processing program to adjust for the difference eliminating the need to further reposition the plate to the ideal design position for processing.

Abstract: A machine has a head with a nozzle, a pipe for supplying water under pressure to the nozzle, and a duct for supplying an abrasive agent, and adding it to the jet of water under pressure. The duct has a first duct portion, fixed with respect to the head in the movements of rotation about a main axis, and a second duct portion, which is fixed with respect to the movements of rotation. A rotating distributor connects the first rotating portion with the second fixed portion of the duct for supplying the abrasive agent. The distributor's stator and rotor are rotatably mounted on one another without the interposition of seal rings and define between them an internal chamber that is substantially at atmospheric pressure and from which the abrasive agent drops by gravity to a duct outlet that converges into the pipe for supplying water under pressure.

Abstract: A machine for cutting, with a hydro-abrasive jet, materials such as, for example, glass, stone, granite, marble, metal materials in general, and all the materials that can be machined using the aforesaid technology, comprises a cutting head (7) mobile according to one or more axes (X, Y, Z, 11, 13). The head (7) includes a nozzle (8) for the emission of a jet of water under pressure, a pipe (14), extending along a main axis (11) of the head, about which the head is able to turn, for supplying water under pressure to the nozzle, and a duct (19) for supplying an abrasive agent, for example garnet, and adding it to the jet of water under pressure. The duct (19) for the abrasive agent comprises a first duct portion (19a), fixed with respect to the head in the movements of rotation about said main axis (11), and a second duct portion (19b), which is, instead, fixed with respect to said movements of rotation.

Abstract: A numeric-control work-centre for machining plates of glass, marble and natural or synthetic stones comprises: a bench, defining a work surface, designed to receive the plates to be machined; two fixed side members, set at the two sides of the work surface; an overhead cross-member, guided over the two side members like an overhead-travelling crane, in a horizontal direction Y orthogonal to the horizontal direction X of the cross-member; and a carriage, which is mobile in the aforesaid horizontal direction X on the cross-member, present in which are two work heads carried by a slide, mounted on the carriage so that, during machining of the edge of a plate, consecutive passing of the first tool and of the second tool in any order is obtained with one and the same movement of the carriage and/or of the cross-member of the work-centre.

Abstract: A numeric-control work-centre for machining plates of glass, marble and natural or synthetic stones comprises: a bench, defining a work surface, designed to receive the plates to be machined; two fixed side members, set at the two sides of the work surface; an overhead cross-member, guided over the two side members like an overhead-travelling crane, in a horizontal direction Y orthogonal to the horizontal direction X of the cross-member; and a carriage, which is mobile in the aforesaid horizontal direction X on the cross-member, present in which are two work heads carried by a slide, mounted on the carriage so that, during machining of the edge of a plate, consecutive passing of the first tool and of the second tool in any order is obtained with one and the same movement of the carriage and/or of the cross-member of the work-centre.

Abstract: An infusion maker comprising, similarly to an espresso maker, a lower container or boiler (11) and an lapper container (12). The bottom (12') of the upper container (12) is provided with an outlet (16) which connects said upper container (12) with the intermediate cup (14), and the chimney conduit (15) conveying the liquid from the lower container to the upper container is provided with a movable sleeve (17) which may be moved from a position associated with the closing of said outlet (16) and the opening of said chimney conduit (15), thus permitting the passage of the liquid from the lower container into the upper container, to a position associated with the opening of said outlet (16) and the closing of said chimney conduit, thus causing the liquid in the upper container to pour into the lower container.