| 摘要 |
PURPOSE:To obtain a good multilayered molding by maintaining a sheet at central position, by controlling the injection pressure of a resin to compensate the offset of an intermediate sheet detected during the injection of the resin. CONSTITUTION:As it is started to inject a molten resin from first and second injection units U1, U2, the molten resin is poured into the upper and lower sides of the intermediate sheet S of a cavity 8. Here if the intermediate sheet S is offset, first, second, third and fourth proximity sensors 25, 26, 27, 28 which are provided at the side part of a molding 6a of a top force 2 and the side part of molded surface 7a of a bottom force 3 sense the displacement of the intermediate sheet S and regulate the injection pressure of the units U1, U2, thus transferring the sheet S to the central position of the cavity 8. Thus a multilayered molding without the ununiformity of the position of the intermediate sheet is injection molded. |
