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1.发明授权
公开(公告)号：US3848496A
公开(公告)日：1974-11-19
申请号：US32395573
申请日：1973-01-15
申请人： DAYTON PROGRESS CORP
发明人： STEVENS H , RANDOLPH A
CPC分类号： B21D45/006 , Y10T83/2144 , Y10T83/2159
摘要： A die for use in a punch press or like equipment embodying improvements in the mount and suspension of a spring biased stripper plate. It features stripper springs endowed with a definite pre-load by virtue of a special cage assembly. The caged spring assemblies are so constructed and applied that there is absolutely no pressure on the stripper plate when the die is in an open position. In preferred embodiments of the caged spring assemblies, the open spaces between the coils of a contained spring are reduced to a dimension less than that of the thickness of the coils themselves. This prevents the coils from winding or screwing and from materially affecting the prescribed pre-load in event of spring breakage. The invention further features means to maintain the stripper spring preload constant and to preserve a constant relation of component parts of the die when adjustment of the die tools is required.
摘要翻译： 用于冲压机或类似设备的模具，其体现在弹簧偏压剥离板的安装和悬架方面的改进。 它具有通过特殊的保持架组件赋予确定的预载荷的汽提弹簧。 笼式弹簧组件的构造和应用使得当模具处于打开位置时，剥离板上绝对没有压力。 在笼式弹簧组件的优选实施例中，容纳弹簧的线圈之间的开放空间减小到小于线圈自身厚度的尺寸。 这样可以防止线圈在弹簧断裂的情况下卷绕或拧紧，并且会严重影响规定的预载荷。
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公开(公告)号：US3842645A
公开(公告)日：1974-10-22
申请号：US32465073
申请日：1973-01-18
申请人： DAYTON PROGRESS CORP
CPC分类号： B21D45/006 , Y10T83/2159
摘要： The invention features a spring assembly the construction of which lends it particular advantage for use in forming dies, to replace conventional stripper springs. Preferred embodiments feature a spring receptacle and an interrelated cap formed to center and contain therebetween a coil spring. The cap and the receptacle are interconnected by a screw, the adjustment of which enables the adjustment in the contained length and the pre-load on the spring. In its preferred application, to replace a conventional stripper spring in a die set, the spring assembly of the invention can be so applied as to insure zero stress on the related stripper plate in the open condition of the die. The spring receptacle features a simple means to facilitate that this zero stress condition may be maintained as and when the die tools require sharpening or adjustment, which in turn requires an adjustment of the related stripper plate.
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