Abstract: Method and device for solid structure formation by localized microwaves for additive fabrication of solid bodies by use of localized microwave radiation applied to a source material, in the form of a powder, wire or other solid form, so as to generate a hotspot in a thermal-runaway process or through plasma breakdown, and melt a small portion of it (with at least one dimension smaller than the microwave wavelength) thereby consolidating small pieces of the molten source material in a stepwise manner to construct the entire body.

Abstract: Method and mold for producing air ducts (P) from plastic material, especially soft plastic material, with a hardness of between Shore 5 and Shore 65, of the type comprising a hollow main body (P1) provided with at least one protuberance or nipple (P2) that projects from the exterior wall of the main body (P1), the method comprising the steps of injection-molding at least one nipple (P2) from plastic material inside a first cavity (1) of a mold (M); interconnecting the first cavity (1) with a second cavity (3) arranged in the same mold (M) and located adjacent to said first cavity (1), in order to form a single volume; and blow-molding a hollow body from a moldable plastic-material parison inside the second cavity (3).

Abstract: Method and mould for producing air ducts (P) from plastic material, especially soft plastic material, with a hardness of between Shore 5 and Shore 65, of the type comprising a hollow main body (P1) provided with at least one protuberance or nipple (P2) that projects from the exterior wall of the main body (P1), the method comprising the steps of injection-moulding at least one nipple (P2) from plastic material inside a first cavity (1) of a mould (M); interconnecting the first cavity (1) with a second cavity (3) arranged in the same mould (M) and located adjacent to said first cavity (1), in order to form a single volume; and blow-moulding a hollow body from a mouldable plastic-material parison inside the second cavity (3).

Abstract: The apparatus comprises a melting chamber (6) in communication with a molding cavity made up by two half-molds (1, 2) in a close position, an inlet duct (3) through which plastic material is fed into said melting chamber (6), an ultrasound vibration element (4) activated by an ultrasound generator (5) and provided with an end portion inserted in the melting chamber (6) through an access opening thereof, and motion means for generating a relative displacement between the ultrasound vibration element (4) and the melting chamber (6). The ultrasound vibration element (4) is supported by adjustment means so as to adjust the position of a longitudinal axis (E) thereof in two cross directions (X, Y) perpendicular to each other and perpendicular to an axial direction (Z) parallel to a longitudinal axis of the melting chamber (6).

Abstract: It comprises a support (3), an ultrasonic transducer (1), a sonotrode (2), a nozzle (4), at an end part of said sonotrode, and a melting chamber (5) in communication with a deposition outlet (4a) through a discharging channel (6a) wherein: an internal channel (6) extends through the sonotrode (2) allowing a loose passage of plastic material in solid state; said internal channel (6) extends along a section with a progressive reduction of its clearance area through a truncated conical section providing said discharging channel (6a) and containing said melting chamber (5); several longitudinal profiles or ribs (10), located as a cone generator and angularly offset are protruding from the interior wall of the conical section of the melting chamber (5), having a multifaceted end (11) facing and opposed to an entrance to said melting chamber (5).

Abstract: The apparatus comprises a melting chamber (6) in communication with a moulding cavity made up by two half-moulds (1, 2) in a close position, an inlet duct (3) through which plastic material is fed into said melting chamber (6), an ultrasound vibration element (4) activated by an ultrasound generator (5) and provided with an end portion inserted in the melting chamber (6) through an access opening thereof, and motion means for generating a relative displacement between the ultrasound vibration element (4) and the melting chamber (6). The ultrasound vibration element (4) is supported by adjustment means so as to adjust the position of a longitudinal axis (E) thereof in two cross directions (X, Y) perpendicular to each other and perpendicular to an axial direction (Z) parallel to a longitudinal axis of the melting chamber (6).

Abstract: The invention relates to an ultrasonic device for molding micro plastic parts, which combines: a) a mold cavity configured in a mold having an inlet for supplying plastic material to a chamber with an access opening and the chamber facing the cavity at a distal end in relation to its access opening; b) a cantilevered ultrasonic vibration element associated with an ultrasound generator, with an end portion or tip inserted tightly into the chamber through the access opening in an axially centered manner; c) a movement device for generating a relative movement between the end portion and the parts of the mold so that the end portion engages with the supplied plastic material and exerts a pressure of pre-determined magnitude thereon upon activation of the ultrasonic vibration element.

Abstract: Device and apparatus for selective deposition of molten plastic material and method of manufacture by selective deposition. The device and the apparatus include a melting chamber communicated with a portion of a sonotrode of an ultrasonic transducer, a passage for feeding plastic material, and at least one outlet opening for supplying molten plastic material dropwise or continuously. A feeding of plastic material to the melting chamber is provided. The method includes feeding plastic material to the melting chamber configured in a device for selective deposition installed in a head of a piece of industrial manufacturing equipment, which is moved according to a strategy of its path defined by numerical control on a deposition area, and pouring plastic material melted by ultrasound through the outlet opening.

Abstract: It comprises a support (3), an ultrasonic transducer (1), a sonotrode (2), a nozzle (4), at an end part of said sonotrode, and a melting chamber (5) in communication with a deposition outlet (4a) trough a discharging channel (6a) wherein: an internal channel (6) extends through the sonotrode (2) allowing a loose passage of plastic material in solid state; said internal channel (6) extends along a section with a progressive reduction of its clearance area through a truncated conical section providing said discharging channel (6a) and containing said melting chamber (5); several longitudinal profiles or ribs (10), located as a cone generator and angularly offset are protruding from the interior wall of the conical section of the melting chamber (5), having a multifaceted end (11) facing and opposed to an entrance to said melting chamber (5).

Abstract: The invention relates to an ultrasonic device for molding micro plastic parts, which combines: a) a mold cavity configured in a mold having an inlet for supplying plastic material to a chamber with an access opening and the chamber facing the cavity at a distal end in relation to its access opening; b) a cantilevered ultrasonic vibration element associated with an ultrasound generator, with an end portion or tip inserted tightly into the chamber through the access opening in an axially centered manner; c) a movement device for generating a relative movement between the end portion and the parts of the mold so that the end portion engages with the supplied plastic material and exerts a pressure of pre-determined magnitude thereon upon activation of the ultrasonic vibration element.

Abstract: Device and apparatus for selective deposition of molten plastic material and method of manufacture by selective deposition. The device and the apparatus include a melting chamber communicated with a portion of a sonotrode of an ultrasonic transducer, a passage for feeding plastic material, and at least one outlet opening for supplying molten plastic material dropwise or continuously. A feeding of plastic material to the melting chamber is provided. The method includes feeding plastic material to the melting chamber configured in a device for selective deposition installed in a head of a piece of industrial manufacturing equipment, which is moved according to a strategy of its path defined by numerical control on a deposition area, and pouring plastic material melted by ultrasound through the outlet opening.