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1.发明公开
公开(公告)号：EP3461611A1
公开(公告)日：2019-04-03
申请号：EP17906426.6
申请日：2017-04-17
发明人： SORIMOTO,Masanori
摘要： Provided is a retaining unit that can be easily assembled with a die and has high versatility. Further, provided are a retaining unit that can be compactly assembled with a die, an ejection mechanism of a molding die assembly including the retaining unit, a fixed-side die, a movable-side die, a molding die assembly, and a molded article. The retaining unit includes a movable ejector pin 10, a ring-shaped member 11 used while being fixed in an unmovable state, and a ball plunger 12 attached to the ring-shaped member 11, and configured to press the ejector pin 10 and engage the ejector pin 10 with the ring-shaped member 11, wherein, when a force at a predetermined level or higher is applied in the movement direction of the ejector pin 10, the engagement with the ring-shaped member 11 is released so that the ejector pin 10 is allowed to move, and the ball plunger 12 is assembled with the ring-shaped member 11 so as to be unitized together.
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公开(公告)号：EP3628466A1
公开(公告)日：2020-04-01
申请号：EP18917325.5
申请日：2018-11-09
发明人： SORIMOTO,Masanori
IPC分类号： B29C45/44
摘要： A undercut processing mechanism includes: a sliding piece (50) having a molding core (60) for molding an undercut portion (PI); a holder (20) having a guide for guiding the sliding piece (50) so that a molding core (60) is detached from the undercut portion (PI); and a retaining piece (30) slidably accommodated in the holder (20) and slidably engaged with the sliding piece (50). One of the holders (20) and the retaining piece (30) can advance/retract relative to the other thereof. The retaining piece (30) has a first engagement element and a second engagement element to be engaged with the sliding piece (50). The sliding piece (50) is guided via the first engagement element and the second engagement element so that the molding core (60) is detached from the undercut portion (P1) and moves away from the molded product (P).
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公开(公告)号：EP3461612A1
公开(公告)日：2019-04-03
申请号：EP17903143.0
申请日：2017-03-27
发明人： SORIMOTO,Masanori
摘要： Provided are an undercut processing mechanism that can be configured to be compact but can easily demold an undercut portion and can improve molded article quality; a molding die assembly; and a molded article. An undercut processing mechanism 10 that is used in a state attached to a molding die assembly 1 configured to form a molded article P having an undercut portion P1 so as to allow demolding of the undercut portion P1, the undercut processing mechanism 10 including : a pushing piece 30 movable in a demolding direction of the molded article P; a sleeve pin 60 fixed to the pushing piece 30 or formed so as to be integrated with the pushing piece 30 and capable of supporting the undercut portion P1 during movement of the pushing piece 30; a sliding piece 40 configured to be slidable relative to the pushing piece 30 and to move, in conjunction with movement of the pushing piece 30, in a direction intersecting the demolding direction of the molded article P; and a retaining piece 50 configured to retain the sliding piece 40 such that the sliding piece 40 is slidable.
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公开(公告)号：EP3628462A1
公开(公告)日：2020-04-01
申请号：EP18917155.6
申请日：2018-10-15
发明人： SORIMOTO,Masanori
摘要： A retaining unit includes: a movable ejector pin (10); a ring-shaped member (11) used in a fixed state; and a ball plunger (12) directly attached to the ejector pin (10) or fixed to a fixing member (22) attached to the ejector pin (10). The ball plunger (12) is configured to press the ring-shaped member (11) and engage the ejector pin (10) with the ring-shaped member (11). When a force at a predetermined level or higher is applied to the ejector pin (10) in a movement direction of the ejector pin (10), the engagement with the ring-shaped member (11) is released so that the ejector pin (10) is allowed to move. The ball plunger (12) is incorporated into the ejector pin (10) or the fixing member (22) so as to be unitized together.
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