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1. 发明专利

JP2005219240A Injection mold 审中-公开
标题翻译：注射模具
公开(公告)号：JP2005219240A
公开(公告)日：2005-08-18
申请号：JP2004026922
申请日：2004-02-03
申请人： Aisin Seiki Co Ltd , アイシン精機株式会社
发明人： HIRANO TOMOYASU , KIZU YOSHINOBU
IPC分类号： B29C45/27
摘要： PROBLEM TO BE SOLVED: To provide an injection mold capable of preventing the occurrence of a weld-mark at the time of injection molding to the utmost even in a flat sheet-like large-sized resin molded product.
SOLUTION: The injection mold 100 has at least a first gate G1 for first injecting a resin in a cavity 3 and a second gate G2 for sequentially injecting the resin after the resin is injected from the first gate G1. The resin injected from the first gate G1 is allowed to preferentially flow to a part where the second gate G2 is formed. First, the resin is initially charged in the cavity in a definite direction and, next, by fluidizing the resin so as to expand from the initial charging region, the occurrence of the weld-mark at the time of charging of the resin into the cavity of a thin-walled large-sized molded product having a wide charging region can be suppressed to the utmost.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够在平板状大型树脂成形品中甚至最大限度地防止在注射成型时发生焊点的注塑模具。解决方案：注射模具100至少具有用于在空腔3中首先注入树脂的第一栅极G1和用于在从第一栅极G1注入树脂之后依次注入树脂的第二栅极G2。允许从第一栅极G1注入的树脂优先流到形成第二栅极G2的部分。首先，树脂首先在一定方向上在空腔中充电，接着通过使树脂流化从而从初始充电区域膨胀，在将树脂充入空腔中时出现焊接痕迹可以最大限度地抑制具有宽充电区域的薄壁大型成型制品。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2005028731A Manufacturing method of resin molded product having boss part and mold for use therein 审中-公开
标题翻译：具有BOSS部分的树脂成型制品的制造方法和用于其的模具
公开(公告)号：JP2005028731A
公开(公告)日：2005-02-03
申请号：JP2003196026
申请日：2003-07-11
申请人： Aisin Seiki Co Ltd , アイシン精機株式会社
发明人： ITO TAKAYOSHI , KIZU YOSHINOBU , TOMITA KAZUHIKO
IPC分类号： B29C45/26 , B29C45/00
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of a resin molded product having a boss part capable of simultaneously preventing the sink and flash of the resin molded product without forming the bottomed opening part of the boss part as a thick-walled part, and a mold for use therein. SOLUTION: This mold 20 has an upper mold 21 and a lower mold 22, and a tubular pin 23 and an inside pin 24 are arranged to the thick-walled part corresponding to the boss part of the upper mold 21. A gap 25 is formed between the tubular pin 23 and the inside pin 24 and a compressed gas is supplied from the gap 25 to prevent the sink of the resin molded product 30. Further, the tubular pin 23 and the inside pin 24 are arranged so that the leading ends of them are positionally aligned and, in the forming range in the height direction of the boss part 31, the inner diameter of the tubular pin 23 is made constant and the outer diameter of the inside pin 24 is made constant. Therefore, the thickness of the gap 25 is made constant in this range. By this constitution, the formation of flash to the resin molded product 30 is prevented. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种树脂成型体的制造方法，其具有能够同时防止树脂成型体的下沉和闪光而不形成作为厚壁的凸起部的有底开口部的凸台部部分和用于其中的模具。解决方案：该模具20具有上模21和下模22，并且管状销23和内销24布置在对应于上模具21的凸台部分的厚壁部分上。间隙 25形成在管状销23和内部销24之间，并且从间隙25供给压缩气体以防止树脂模制产品30的凹陷。此外，管状销23和内部销24布置成使得它们的前端位置对准，并且在凸台部31的高度方向上的形成范围内，使管状销23的内径保持恒定，使内销24的外径保持恒定。因此，间隙25的厚度在该范围内保持恒定。通过这种结构，防止了对树脂成型体30的闪光的形成。版权所有（C）2005，JPO＆NCIPI

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