公开(公告)号：US06345974B1

公开(公告)日：2002-02-12

申请号：US09263823

申请日：1999-03-08

申请人： Hiroaki Kawasaki ,  Yutaka Hiroshima ,  Chisato Akinari ,  Yasuo Ishiwata

发明人： Hiroaki Kawasaki ,  Yutaka Hiroshima ,  Chisato Akinari ,  Yasuo Ishiwata

IPC分类号： B29C4540

CPC分类号： B29C45/401 ,  B29C45/77 ,  B29C2945/76006 ,  B29C2945/76013 ,  B29C2945/76103 ,  B29C2945/76163 ,  B29C2945/76244 ,  B29C2945/76257 ,  B29C2945/76287 ,  B29C2945/76381 ,  B29C2945/76458

摘要： An ejector pin with a pressure sensor is provided, of which the sensor output can be utilized without any correction even in different diameter thereof, so that no design changes are required according to loads to the ejector pin. The ejector pin has a bar portion for extruding a molded component and a sleeve portion slidably housing the bar portion. The end of the bar portion faces the cavity from the opening at the end of the guide portion. A housing room is defined by the step portion at the lower end of the sleeve portion. A strain producing portion with an U-shaped cross section fixed on the base end of the bar portion is disposed inside the housing room. A strain sensor is attached on the lower surface of the beam of the strain producing portion. Only the area of the end of the bar portion is related to the pressure detection. When the pressure of a resin is applied on the end of the bar portion, the downward load on the bar portion bends the beam down. The strain sensor outputs a signal corresponding to the load and the pressure is worked out. By separately preparing plural kinds of sleeve portions with different outer diameters, the thickness of an ejector pin can be arbitrarily set according to conditions.

摘要翻译： 提供了具有压力传感器的顶针，即使在不同直径的情况下也可以使用传感器输出而不进行任何校正，因此根据对顶针的负载，不需要设计改变。 推杆具有用于挤压模制部件的杆部分和可滑动地容纳杆部分的套筒部分。 杆部分的端部在引导部分的端部处的开口面向空腔。 容纳室由套筒部分的下端的台阶部分限定。 具有固定在杆部的基端的U形横截面的应变产生部分设置在容纳室内。 应变传感器附着在应变产生部分的梁的下表面上。 只有棒部分末端的区域与压力检测有关。 当在棒部的端部施加树脂的压力时，杆部的向下的负荷使梁向下弯曲。 应变传感器输出与负载对应的信号，并计算出压力。 通过分别制备具有不同外径的多种套筒部分，可以根据条件任意设定顶针的厚度。

公开(公告)号：US06379141B1

公开(公告)日：2002-04-30

申请号：US09379572

申请日：1999-08-24

申请人： Hiroaki Kawasaki ,  Yutaka Hiroshima ,  Yasuo Ishiwata ,  Chisato Akinari

发明人： Hiroaki Kawasaki ,  Yutaka Hiroshima ,  Yasuo Ishiwata ,  Chisato Akinari

IPC分类号： B29C4540

CPC分类号： B29C45/7626 ,  B29C2045/764

摘要： An abnormal mold detector is provided that can previously detect the breakage of a mold tool with an ejector plate. A pressure sensor is attached to the ejector pin of a mold to detect the mold internal pressure. The operation status of the mold is detected by the sensor attached to the mold piece of the mold. An abnormality detector, formed of a CPU, processes the detected pressure signal and the mold working state indicating signal. The abnormality detector sets a reference value D exceeding a normal sticking resistance of the ejector pin. As a material is injected, the mold internal pressure increases during one cycle (A and B) in the molding step. After the molding process, the ejection process is carried out by the ejector pin during the value C. When a sticking resistance exceeding the value D is confirmed during the monitoring operation (FF), the abnormality detector decides that there may be the possibility that an abnormal state occurs in the mold tool. Thus the abnormality detector issues an alarm signal to the operator to halt the operation of the molding machine.

摘要翻译： 提供了一种异常的模具检测器，其可以预先通过喷射板检测模具的破损。 将压力传感器连接到模具的推杆上以检测模具的内部压力。 模具的运行状态由附着在模具的模具上的传感器检测。 由CPU形成的异常检测器处理检测到的压力信号和模具加工状态指示信号。 异常检测器设定超过顶针的正常粘着阻力的基准值D. 当注入材料时，在模制步骤中，模具内部压力在一个循环（A和B）期间增加。 在模制过程之后，在值C期间由顶针执行喷射处理。当在监视操作（FF）期间确认超过值D的粘着阻力时，异常检测器判定可能存在 异型状态发生在模具中。 因此，异常检测器向操作者发出报警信号以停止成型机的操作。