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US5875708A Method of controlling press force in a continuously operating press 失效
在连续操作的压机中控制压力的方法

Method of controlling press force in a continuously operating press
摘要：
A method of controlling the press force on at least one press heating plate along the press length of an operating cycle. For a reduction of specific press force from a maximum press force towards a zero press force, a setting force for a longitudinal deformation of the at least one press heating plate is increased accordingly. For an increase in the specific press force from a zero press force towards a maximum press force, the setting force for the longitudinal deformation of the press heating plates is reduced accordingly. For a reduction of the specific press force from the maximum press force towards the zero press force, the longitudinal gradient tan .beta. is set to be approximately twice as large as the gradient tan .alpha. at the press force maximum. The longitudinal gradient and setting force can thus be controlled along an entire pressing path for an increase or decrease in the specific press force.
摘要（中）：

一种沿着操作周期的压力长度控制至少一个压力加热板上的压力的方法。 为了将特定按压力从最大压力减小到零按压力，所述至少一个压力加热板的纵向变形的设定力相应地增加。 为了从零按压力朝向最大压力增加特定按压力，相应地减小了加热板的纵向变形的设定力。 为了从最大压力朝向零压力力的特定按压力的减小，纵向梯度tanβ被设置为大约是压力最大值处的梯度tanαα的两倍。 因此，可以沿着整个挤压路径控制纵向梯度和设定力，以增加或减小特定按压力。

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