A device for cutting a web of fibrous material including movement means for moving a web of fibrous material to be cut, defining a feed surface for the web and having at least one first cutting zone, at least one laser source configured to generate a laser beam extending along its operating direction towards the first cutting zone to make, on the web, at least one incision extending along a predetermined cutting line, where a portion of the laser beam passes through the web of fibrous material at the first cutting zone. The device also includes recovery means for recovering the portion of the laser beam and at least partly located along the operating direction, at the first cutting zone, in such a way as to intercept the portion of the laser beam and direct it towards a second cutting zone to make a further incision or cut.

A wire based additive manufacturing system includes a base movable in a feed direction. Multiple welding lasers are each spatially fixed as the base moves in the feed direction. Multiple cutting lasers are each spatially fixed as the base moves in the feed direction. Multiple wire feed members each feed an individual wire of a plurality of wires onto the base as the base moves in the feed direction. Each one the multiple welding lasers is energized to fuse parallel adjoining ones of the plurality of wires, and each one of the cutting lasers is energized to cut one of the fused wires to complete one of a plurality of wire layers.

Systems and methods for producing mesh from wires or rods with programmed changeable steps for the longitudinal and transverse wires. The longitudinal wires (1) and the transverse wires (12) may be fed from coils or be precut. The longitudinal wires are fed in receptacles (2) on carriers (3) with the carriers being found on prefeeder carrier (4), a feeder carrier (6) with grippers (7) transports them towards the welding heads (10) and the produced mesh (20) is received by a mesh carrier (14). The carriers (3) with the receptacles (2) for the longitudinal wires on the prefeeder carrier (4), the grippers for the longitudinal wires (7) at the feeder carrier (6) and the welding heads (10) are displaced in the direction of the transverse wire without restrictions, generally in an unrestricted fashion, so as to correspond to the longitudinal wires being subjected to welding. The transverse wires are fed towards the welding heads to be welded with the longitudinal wires. The machine produces meshes with openings, grouping the longitudinal wires in groups and feeding the groups of longitudinal wires towards the welding heads, adjusting the position of the related mechanisms to the position of the longitudinal wires.

This invention discloses a welding equipment for bridges, comprising a base, a fixed ring stand arranged on the top end surface of the base, a fixed block fixedly arranged on the bottom end surface of the fixed ring stand, wherein a first guide sliding groove is arranged in the top end surface of the base, a first guide sliding block in sliding fit connection with said first guide sliding groove. A welding ring stand is fixedly connected to the top end surface of said first guide sliding block; wherein a first adjusting threaded rod is in threaded fit connection with the first guide sliding block. A first motor is in power connection with one tail end of the first adjusting threaded rod. The first motor drives the first adjusting threaded rod to rotate to make the welding ring stand move to one side.

Systems and methods for producing mesh from wires or rods with programmed changeable steps for the longitudinal and transverse wires. The longitudinal wires (1) and the transverse wires (12) may be fed from coils or be precut. The longitudinal wires are fed in receptacles (2) on carriers (3) with the carriers being found on prefeeder carrier (4), a feeder carrier (6) with grippers (7) transports them towards the welding heads (10) and the produced mesh (20) is received by a mesh carrier (14). The carriers (3) with the receptacles (2) for the longitudinal wires on the prefeeder carrier (4), the grippers for the longitudinal wires (7) at the feeder carrier (6) and the welding heads (10) are displaced in the direction of the transverse wire without restrictions, generally in an unrestricted fashion, so as to correspond to the longitudinal wires being subjected to welding. The transverse wires are fed towards the welding heads to be welded with the longitudinal wires. The machine produces meshes with openings, grouping the longitudinal wires in groups and feeding the groups of longitudinal wires towards the welding heads, adjusting the position of the related mechanisms to the position of the longitudinal wires.

Methods and compositions for making a near net shape article are provided. The method includes depositing a first wire material using a wire fed additive manufacturing technique to form a near net shape article. The first wire material may be a Cr/Ni-rich composition or a Cr/Mn-rich composition. The additively manufactured near net shape article exhibits minimal distortion and good fatigue strength.

This invention discloses a welding equipment for bridges, comprising a base, a fixed ring stand arranged on the top end surface of the base, a fixed block fixedly arranged on the bottom end surface of the fixed ring stand, wherein a first guide sliding groove is arranged in the top end surface of the base, a first guide sliding block in sliding fit connection with said first guide sliding groove. A welding ring stand is fixedly connected to the top end surface of said first guide sliding block; wherein a first adjusting threaded rod is in threaded fit connection with the first guide sliding block. A first motor is in power connection with one tail end of the first adjusting threaded rod. The first motor drives the first adjusting threaded rod to rotate to make the welding ring stand move to one side.

The present disclosure may be embodied as a method for creating a restriction pattern from a mask material having a strain (.sub.mask) an for mapping elastomeric membrane having a strain (.sub.membrane) into a target 3D shape. The method may include discretizing the target 3D shape into a plurality of radial segments, and a radial strain (.sub.r) is determined for each radial position (r) on each radial segment of the plurality of radial segments. A restriction pattern is determined, wherein the restriction pattern comprises a quantity of mask material for each position r to provide a composite strain (.sub.mask,.sub.silicone). In some embodiments, the method further includes depositing a first membrane layer into a mold and placing mask material into the first membrane layer according to the determined restriction pattern. The first membrane layer is cured.

Example embodiments of the present disclosure relate to methods, systems, and apparatus for joining metallic fabrics. The method includes applying heat to at least one of a fusible metal or alloy, a first metallic fabric, and a second metallic fabric with the fusible metal or alloy and the first and second metallic fabrics being in thermal communication. The first and second metallic fabrics are joined with the fusible metal or alloy.

A method of making a medical device includes forming a precursor medical device using additive manufacturing. The precursor medical device includes a first portion, a second portion, a first connector, and a second connector. The first connector connects the first portion to the second portion and is configured to remain. The second connector connects the first portion to the second portion and are configured to be removed. The second connector is formed such that the second connector is less ductile than the first portion, the second portion, and the first connector. The precursor medical device is processed to remove the second connector without adversely affecting the first portion, the second portion, and the first connector.