An ultrasonic sealing apparatus which allows for easy maintenance of a horn and high cooling efficiency of the horn is provided. The ultrasonic sealing apparatus includes a horn that abuts on a cylindrical material and applies vibration thereto, and a horn cover which includes a small frames that cover a lateral surface of the horn and have slits through which a space in which the horn is enclosed communicates with outside, the horn cover being removably attached independently from the horn.

Using a conveyance roller having an outer peripheral surface which is capable of conveying two sheets with an elastic element sandwiched therebetween, in a longitudinal direction of the sheets, and formed with a convex section; and a clamping and pressing device, the sheets with the elastic element sandwiched therebetween are ultrasonic-welded together under pressing. The convex section is formed in a shape extending along a line intersecting a conveyance direction of the conveyance roller, and the convex section is provided with a plurality of grooves at positions spaced apart from each other in a longitudinal direction thereof, wherein each of the grooves extends in the conveyance direction of the conveyance roller to allow a portion of the sheets on which the elastic element is disposed, to be inserted therein.

A clamping device is used for joining panels or boards with highly cosmetic appearance at the visible joined surface. The clamping device can include mechanisms to support and move one panel relative to another panel in two directions perpendicular to the beveled edges of the panels. The clamping device can include a rotational mechanism to rotate one panel around a direction parallel to the beveled edge.

A thermal bonding assembly for sheets made of polymeric material includes at least one pair of jaws that can be moved mutually closer, at least one of which is provided with a heater at its surface for abutment against a corresponding complementary surface of the other jaw of the pair. The assembly includes a shaft that can rotate by virtue of the action of a respective motor. The rotatable shaft includes at least two eccentric rings which are arranged side by side so that the eccentric portion that protrudes the most with respect to the rotation axis is substantially mutually opposite. Each jaw of the pair includes a respective through hole for the accommodation of the shaft. The shaft is accommodated in the hole of a respective jaw with the interposition of a rotatable disk.

Composite tooling systems and methods of manufacturing composite stringers of aircraft are provided herein. A composite tooling system includes a layup tool and an articulating stringer mandrel. The layup tool has a contoured surface with portions having different surface complexities. The articulating stringer mandrel includes two rigid mandrel elements and a cable. The first rigid mandrel element defines a first aperture, a first stringer surface, and a first bottom surface. The second rigid mandrel element is adjacent to the first rigid mandrel element and defines a second aperture, a second stringer surface, and a second bottom surface. A first length of the first rigid mandrel element cooperates with the surface complexity and a second length of the second rigid mandrel element cooperates with the surface complexity at the second rigid mandrel element so that a gap between the rigid mandrel elements does not exceed a predetermined gap threshold.

A bag (100) suitable for packaging fruit and vegetable products (2) comprising a casing (103) capable of housing the products to be packaged and at least one first band (104) and one second band (105) each arranged on the outer face of the casing so as to seal said casing, the first band (104) being joined to the casing only at its ends (104a, 104b) forming a handle (106) and the second band (105) joined along the length thereof to the associated face of the casing, forming a stable bottom (105c). A station (1) for producing this bag (100) comprises an expansion device (4) of tubular material comprising an upper expansion body (4a) and a lower expansion body (4b) mechanically linked to each other with a capacity for movement of one with respect to the other and that cooperate with welding groups.

A method of joining overlapping thermoplastic membrane components in which a first thermoplastic membrane component and a second thermoplastic membrane component are positioned in overlapping relationship between a pair of complementary molding surfaces, with at least one of the complementary molding surfaces being defined by an electrically conductive metal susceptor. Heat is generated in the metal susceptor and transferred by thermal conduction from the metal susceptor to overlapping portions of the first and second thermoplastic membrane components to locally melt and coalesce at least a portion of the thermoplastic material of the first thermoplastic membrane component and at least a portion of the thermoplastic material of the second thermoplastic membrane component. The molten thermoplastic material of the first and second thermoplastic membrane components forms a zone of coalesced thermoplastic material that, upon cooling, forms a solid weld joint that fusion welds the first and second thermoplastic membrane components together.

A system (100), for manufacturing a rotor blade (112), comprises a first tooling (170), positioned at a factory location (114) and configured to assemble a first blade module (116), comprising a first-module skin (118) and a first-module spar (120), each comprising a first thermoplastic polymer (122) and a first reinforcement material (124). The system (100) comprises a second tooling (172), configured to assemble a second blade module (126), comprising a second-module skin (128) and a second-module spar (130), each comprising a second thermoplastic polymer (132) and a second reinforcement material (134). The system (100) comprises a first support (160), positioned at a field location (140) and configured to receive the first blade module (116), and a second support (162), positioned at the field location (140) and configured to receive the second blade module (126). The system (100) comprises a spar welding assembly (174), positioned at the field location (140) and configured to join the first-module spar (120) with the second-module spar (130), and a skin welding assembly (176), positioned at the field location (140) and configured to join the first-module skin (118) with the second-module skin (128).

The objective of the present invention is to provide a welding head assembly that can meet various welding requirements. The welding head assembly for ultrasonic welding to realize the objective mentioned above, comprising an acoustic rod, a vibrating rod and a connecting member, the vibrating rod is separated into two pieces, thereby separated into a first vibrating rod and a second vibrating rod by the acoustic rod, the first vibrating rod is connected with the acoustic rod and the connecting member, one end of the second vibrating rod is connected with the acoustic rod, and the other end of the second vibrating rod is configured to be a welding head working portion; wherein, the acoustic rod, the first vibrating rod and the connecting member are integrally formed as one piece.

A manufacturing apparatus of a flexible display device, including: a main chamber in which a display device is mounted; an auxiliary chamber configured to inject a first pressing material having fluidity into the main chamber; and a driving portion configured to rotate the main chamber.