摘要 |
PROBLEM TO BE SOLVED: To provide a high frequency sewing machine in which the generation of press marks and overheat marks are eliminated, and further, adhesion can be uniformly and securely performed over the whole length of an overlapping parts.SOLUTION: Provided is a high frequency sewing machine constituted in such a manner that high frequency electric power is applied to a space between a pair of planar electrodes 10, 11 at the upper part and the lower part to the material H to be worked transferred onto the mounting face 5a of a substrate mounting plate 5 by a high frequency electric power imparting device 12, thus thermoplastic resin tape T is melted by high frequency induction heating, and the overlapping parts of a fiber substrate W are made adherable. The pair of the planar electrodes 10, 11 at the upper part and the lower part are constituted in such a manner that the lower face 10a and the upper face 11a of the respective electrodes 10, 11 are always held to the non-contact positions separated to the upper part from the surface of the material H to be worked upon an adhesion working operation, and further, the high frequency electric power imparting device 12 continuously applies high frequency electric power at a prescribed value to a space between a pair of the planar electrodes 10, 11 at the upper part and the lower part always upon an adhesion working operation. |