基本信息:

• 专利标题： Excessive load detecting device for injection screw of injection molding machine
• 专利标题（中）：Vorrichtung zurÜberwachungderÜberbelastungder Kolbenschnecke einer Einspritzmaschine
• 申请号：EP00308055.3 申请日：2000-09-15
• 公开(公告)号：EP1084813A1 公开(公告)日：2001-03-21
• 发明人： Takatsugi, Satoshi , Watanabe, Hiroshi , Shiraishi, Wataru
• 申请人： FANUC LTD
• 申请人地址： 3580, Aza-komanba Shibokusa, Oshino-mura Minamitsuru-gun, Yamanashi 401-0597 JP
• 专利权人： FANUC LTD
• 当前专利权人： FANUC LTD
• 当前专利权人地址： 3580, Aza-komanba Shibokusa, Oshino-mura Minamitsuru-gun, Yamanashi 401-0597 JP
• 代理机构： Billington, Lawrence Emlyn
• 优先权： JP26273499 19990916
• 主分类号： B29C45/76
• IPC分类号： B29C45/76

摘要：

An excessive load detection device for an injection molding machine capable of detecting an excessive load exerted on the injection screw when the screw is driven with resin remaining unmolten in the heating cylinder. An output torque of the servomotor for axially moving the screw is limited to a predetermined value by a torque limiter and the screw is driven to move forward in a direction of injection by a predetermined amount at a predetermined velocity. If reference time elapses before the axial motion of the set amount is completed or a position deviation exceeds a reference value, it is determined that the remaining resin has low fluidity to cause an excessive load on the screw and an alarm is issued. When the axial motion of the screw is completed without an alarm, the screw is moved backward and forward alternately predetermined times. A servomotor for rotating the screw is driven in the same manner to detect an excessive load on the screw. Since the excessive load on the screw is directly detected, the excessive load is securely detected.

摘要（中）：

一种用于注射成型机的过载检测装置，其能够检测当加热缸中树脂未熔化时螺杆被驱动时施加在注射螺杆上的过大的负荷。 用于轴向移动螺杆的伺服电动机的输出扭矩通过扭矩限制器被限制到预定值，并且螺杆被驱动以在预定方向上以预定速度在注射方向上向前移动预定量。 如果在设定量的轴向运动完成或位置偏差超过参考值之前经过参考时间，则确定剩余树脂具有低流动性，导致螺钉上的过大负载并发出报警。 当螺钉的轴向运动在没有报警的情况下完成时，螺杆将交替地向前和向前移动预定的次数。 用于旋转螺钉的伺服电机以相同的方式被驱动以检测螺钉上的过大负载。 由于直接检测到螺钉上的过大负荷，因此能够可靠地检测出过大的负荷。

公开/授权文献:

• EP1084813B1  Excessive load detecting device for injection screw of injection molding machine 公开/授权日：2006-01-04

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