Abstract: A sewing device that, when interposing a workpiece-to-be-sewn between a post head and a pressing mechanism and sewing same by penetrating a machine needle therethrough, shapes the workpiece-to-be-sewn in a prescribed shape and sews same, by seating the workpiece-to-be-sewn in a workpiece holding jig having a plurality of seats arranged along a sewing line for the workpiece-to-be-sewn.

Abstract: [Object] When welding a pair of members made from resin, to limit a distortion being formed in a product after welding, and prevent a quality reduction in the visual appearance. [Means for solving problem] Bring together the surfaces of a pair of members 1, 2 which are going to be welded, then catch and clamp the members 1, 2 by upper jig 3 and lower jig 4 of the vibration welder, and melt the surfaces to be welded by pressing together the pair of members, increasing driving power and generating a relative movement by vibrating both simultaneously, and cool the melted portion by stopping the vibration and welding the melted portion, and, in the process of cooling, reduce the driving power to a predetermined pressure force.

Abstract: In a vibration welding method and a vibration welding apparatus, a base plate and a vibrating plate which can be vibrated relatively to each other clamp an instrument panel, a storage box, and a duct as layers therebetween, which are joined to each other under pressure with vibration. A protective member of urethane is disposed on a workpiece rest for placing the base plate thereon. The storage box is made of a material having a relatively low melting point, and the duct is made of a material having a relatively high melting point. The thickness of the protective member is different depending on the location where the protective member supports the resin base, and the storage box or the duct.

Abstract: In a vibration welding method and a vibration welding apparatus, a base plate and a vibrating plate which can be vibrated relatively to each other clamp an instrument panel, a storage box, and a duct as layers therebetween, which are joined to each other under pressure with vibration. A protective member of urethane is disposed on a workpiece rest for placing the base plate thereon. The storage box is made of a material having a relatively low melting point, and the duct is made of a material having a relatively high melting point. The thickness of the protective member is different depending on the location where the protective member supports the resin base, and the storage box or the duct.