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公开(公告)号：EP3238910A1
公开(公告)日：2017-11-01
申请号：EP15872941.8
申请日：2015-12-18
申请人： Kyoraku Co., Ltd.
发明人： ONODERA Masaaki
CPC分类号： B29C49/04 , B29C47/0023 , B29C47/0054 , B29C47/0894 , B29C47/22 , B29C47/54 , B29C47/92 , B29C49/041 , B29C49/78 , B29C2947/92514 , B29C2947/92647 , B29C2947/92876 , B29C2947/92904 , B29C2947/92961 , B29C2947/9298 , B29K2023/12 , B29K2105/04 , B29L2023/22 , B29L2023/225 , B29L2031/30 , B29L2031/7492 , C08J2323/12
摘要： Provided is a blow-molding method capable of suppressing generation of blister-like bubbles and producing a high quality hollow molded article when forming a thick hollow molded article by blow-molding. A blow-molding method includes setting a die-slit interval in a die head according to a target wall thickness of a hollow molded article to be molded, extruding a molten resin in an accumulator into a cylindrical shape from the die slit to form a parison, and molding the parison in a mold. The die-slit interval is made smaller than a value set according to the target wall thickness at start of extrusion, and then is increased to match the value set according to the target wall thickness. The value set according to the target wall thickness is preferably corrected considering wall thickness reduction due to drawdown. The wall thickness of the hollow molded article is preferably 3.5 mm or more.
摘要翻译： 本发明提供一种吹塑成型方法，其能够在通过吹塑成型形成厚的中空成型品时抑制气泡状气泡的产生并且制造高品质的中空成型品。 吹塑方法包括：根据待模塑的中空模塑制品的目标壁厚设定模头中的模缝间隔，将模头中的熔料树脂从储料器中挤出成圆筒形，以形成型坯 并在模具中模制型坯。 使模缝间隔小于根据挤出开始时的目标壁厚设定的值，然后增加以与根据目标壁厚设定的值匹配。 根据目标壁厚设定的值优选地考虑到由于下降而导致的壁厚减小而被校正。 中空成型体的壁厚优选为3.5mm以上。
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2.发明公开
公开(公告)号：EP3705261A1
公开(公告)日：2020-09-09
申请号：EP18873254.9
申请日：2018-10-30
申请人： Kyoraku Co., Ltd.
发明人： SHIMADA Kengo , TANJI Tadatoshi , TANI Naoto , ONODERA Masaaki
摘要： [Problem] The purpose is to provide a molding-forming method, a molding mold, and a molding production apparatus with which efficient burrs removal is possible without requiring a large apparatus.
[Solution] The invention is a molding production method wherein, in addition to a molding being formed inside a mold, burrs formed around the molding are separated from the molding. After formation of the molding, air is blown inside the mold on at least a portion of the burrs formed around the molding to cool the same, a projecting member is projected toward the cooled burrs, and the burrs are separated from the molding. After pressing the burrs toward the projecting member by the air blowing, the burr is pressed toward the mold surface facing the projecting member by projection of the projecting member to separate the burr from the molding. The invention also is a burr removal method and a burrs removal device for removing a formed molding from a mold and removing burrs formed along the parting line. When pressing burrs using a pressing jig near the parting line, the molding is loaded on a receiving base and the area of the burrs outside of the site of contact of the pressing jig is supported.
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