| 摘要 |
<p>PURPOSE:To execute a heating operation with good efficiency and uniformly while the shape of an object having a fine size is being maintained with high accuracy by a method wherein a heating plate composed of a ferromagnetic substance is pushed to the prescribed position of an object to be heated and the heating operation is executed. CONSTITUTION:At a high-frequency heating plate 10 which is composed of a dust core 1, an induction heating coil 2, a heating plate 4 and the like, the coil 2 composed of a hollow flat-type copper wire is wound on the core 1, and the plate 4 composed of a Cr ferromagnetic substance is brought into contact with its one face. A pressure plate 6 is arranged and installed so as to be faced with the coil 2 and can press a lead-frame continuous body (an object to be heated) F to the direction of the plate 4 by using actuators 21. The plate 6 is moved to the direction of the plate 4. While regions excluding side rails of a lead frame are being pressed, the plate is heated. When the plate 4 is pushed to the prescribed position of the object F to be heated and is heated in this manner, it can be heated with good efficiency. Since it can uniformly be heated and it is heated while it is being pressed, its shape can be corrected and the shape can be worked with high acuracy.</p> |
