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    • 6. 发明专利
    • Method for molding fiber-reinforced thermoplastic resin sheet, and heating apparatus
    • 纤维增强热塑性树脂片材加热方法及加热装置
    • JP2013220626A
    • 2013-10-28
    • JP2012094845
    • 2012-04-18
    • Quadrant Plastic Composites Japan Ltdクオドラント・プラスチック・コンポジット・ジャパン 株式会社Chubu Engineering Kk中部エンジニアリング株式会社
    • SHIRAKI YUKIOTACHI MASAKIKITAGAWA MASAHIROWADA KOJI
    • B29C53/04B29C43/22
    • PROBLEM TO BE SOLVED: To suppress distortion of a bent part, a decrease in working accuracy of the bent part and a decrease in strength of the bent part, in the molding of the bent part, by making local parts 24 and 25 possess thermal flexibility.SOLUTION: Before a sheet 1 is roll-formed, only both upside and downside heating areas 26 and 27 of local parts 24 and 25 are each preheated by heat of heaters 8 and 9 passing through through-holes 15 and 16, when the through-holes 15 and 16 of heat shield plates 10 and 11 mutually face both upside and downside heating areas 26 and 27 of the local parts 24 and 25 for being worked as bent parts during molding, along with the movement of the sheet 1 before the molding. In that case, a heating dimension W26 along the width direction Y of the sheet 1 before the molding in the upside heating area 26, positioned on a bending-direction side after bending, of both upside and downside heating areas 26 and 27 of the local parts 24 and 25 in the sheet 1 before the molding is set smaller than a heating dimension W27 along the width direction Y of the sheet 1 in the downside heating area 27 positioned on a side in a direction opposite to the bending direction after the bending.
    • 要解决的问题:为了抑制弯曲部的变形,弯曲部的加工精度的降低和弯曲部的强度的降低,在弯曲部的成型中,通过使局部部件24,25具有热挠曲性 解决方案:在片材1卷成形之前,只有局部零件24和25的上下加热区域26和27都通过通过通孔15和16的加热器8和9的热被预热, 隔热板10和11的孔15和16相互面对局部部件24和25的上下加热区域26和27,以在模制期间作为弯曲部分加工,同时在模制之前片材1的运动 。 在这种情况下,在位于弯曲后的弯曲方向侧的上侧加热区域26中的成型前的片材1的宽度方向Y上的加热尺寸W26为本地的上下侧加热区域26,27 在成型前的片材1中的部件24和25被设定为小于在位于与弯曲之后的弯曲方向相反的方向的一侧的下侧加热区域27中的片材1的宽度方向Y上的加热尺寸W27。