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52. 发明专利

JP2003276050A Apparatus and method for injection molding 有权
标题翻译：装置和注塑方法
公开(公告)号：JP2003276050A
公开(公告)日：2003-09-30
申请号：JP2002082983
申请日：2002-03-25
申请人： Mitsubishi Plastics Ind Ltd , Toshiba Machine Plastics Engineering Co Ltd , Toyo Kagaku Sangyo Kk , 三菱樹脂株式会社 , 東洋化学産業株式会社 , 株式会社東芝機械プラスチックエンジニアリング
发明人： KATO YUKIO , KATO MASAFUMI , WATANABE SHINJI , KAJIKAWA SATOSHI , IWAMOTO KAZUHIRO , SUZUKI SHIGETO
IPC分类号： B29C45/16 , B29C45/22 , B29L9/00
摘要： PROBLEM TO BE SOLVED: To provide an apparatus and a method for injection molding by which a resin molded article with a multi-layer construction can be stably molded even by using a resin being short of fluidity and heat stability.
SOLUTION: An inner cylinder provided with the first resin flow channel 14 at the central part, an outer cylinder forming a ring-like second resin flow channel 16 between it and the outer peripheral face of the inner cylinder, a spider 19 concentrically assembling the outer cylinder and the inner cylinder, the first resin introducing path 20 provided at a leg part of the spider and for introducing a resin from the first injection unit into the first resin flow channel 14, the second resin introducing path 22 for introducing a resin from the second injection unit into the second resin flow channel from the back end part of the outer cylinder, and a confluent nozzle part 23 provided at the apex of the outer cylinder and communicated with both resin flow channels, are provided. An injection nozzle 13 formed with the second resin flow channel with an aperture area corresponding to 55-80% of an annular flow channel over the whole periphery is used on the spider, and the first injection unit 11 and the second injection unit 12 are controlled in such a way that the resins with preset amounts are injected in a preset order.
COPYRIGHT: (C)2003,JPO
摘要翻译：解决的问题：提供一种即使使用缺乏流动性和热稳定性的树脂也能够稳定地模塑具有多层结构的树脂模塑制品的注塑成型装置和方法。解决方案：在中央部设置有第一树脂流路14的内筒，在其与内筒的外周面之间形成环状的第二树脂流路16的外筒，同心圆组装外筒和内筒，第一树脂引入路径20设置在蜘蛛的腿部并用于将树脂从第一注射单元引入第一树脂流动通道14中，第二树脂引入路径22用于引入树脂从第二注射单元进入到外筒的后端部分的第二树脂流动通道中，以及设置在外筒的顶点处并与两个树脂流动通道连通的汇合喷嘴部23。在该蜘蛛上使用形成有第二树脂流道的注射喷嘴13，该喷嘴13具有对应于整个周边的环形流动通道的55-80％的孔面积的开口面积，并且第一注射单元11和第二注射单元12被控制以预先设定的顺序注入预定量的树脂。版权所有（C）2003，JPO

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