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1. 发明授权

US4489031A Method for molding plastic material by mechanical press 失效
标题翻译：通过机械压力成型塑料材料的方法
公开(公告)号：US4489031A
公开(公告)日：1984-12-18
申请号：US450557
申请日：1982-12-16
申请人： Susumu Ogihara
发明人： Susumu Ogihara
IPC分类号： B29C33/00 , B29C37/00 , B29C43/00 , B29C43/02 , B29C43/36 , B29C43/52 , B29C43/58 , B29C45/00 , B29C51/12 , B29C51/18 , B29C57/00 , B29C70/46 , B29C3/00
CPC分类号： B29C43/58 , B29C37/006 , B29C70/46
摘要： A method for molding plastic materials which release gas during molding by operating a mechanical rotary crank type press having opposed metal die parts respectively carried on a slide driven by a crank mechanism and on a floating plate supported on a die cushion and movable against a bolster on the press. The method involves heating a blank of a plastic material which releases gas during molding to a molding temperature and placing it between the die parts. Then, the crank mechanism of the press is operated to drive the slide in a direction toward a bottom dead center position to a first position which is within a range of positions in the movement of the slide where only the reacting force of the die cushion is received by the blank and holding the slide at this first position for a time up to several seconds for permitting release of the gas from the plastic material of the blank. Then the crank mechanism of the press is further operated to drive the slide to the position thereof corresponding to the bottom dead center position of the crank mechanism for exerting pressure on the blank against the bolster of the press. Finally the slide is driven past the last mentioned position and in the opposite direction to a further position where only the reaction force of the die cushion is received by the blank and holding the blank at this further position for cooling and solidifying the blank.
摘要翻译：一种用于模制塑料的方法，其通过操作具有相对的金属模具部件的机械旋转曲柄型压力机在模制中释放气体，所述机械旋转曲柄型压力机分别承载在由曲柄机构驱动的滑块上，以及支撑在模具垫上的浮动板，新闻。该方法包括加热塑料材料的坯料，其在模制期间将气体释放到成型温度并将其放置在模具部件之间。然后，操作压力机的曲柄机构，使滑动件朝向下死点位置的方向驱动到第一位置，该第一位置在滑块的运动位置范围内，只有模座的反作用力为由坯件接收并将滑块保持在该第一位置几秒钟以允许从坯料的塑料材料释放气体。然后进一步操作压力机的曲柄机构，以将滑块驱动到与曲柄机构的下止点位置相对应的位置，以将压力施加在冲压机的压板上。最后，滑块被驱动经过最后提到的位置，并且在相反方向被驱动到另一个位置，在该位置处只有模具衬垫的反作用力被坯件接收并且将坯件保持在该另外的位置以冷却和固化坯件。

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