要把双面都有吹胀管路的蒸发器一次弯成封闭矩形,脱模会发生困难。本文介绍一种两次弯形的专用机床,供参考。一、成形原理如图1所示,工件置于下垫上,上模下行压紧工件,上模继续下行,工件在一对橡胶辊轮之间折弯。弯形以后,上模回程,工件由下垫顶出。蒸发器内腔尺寸及弯曲半径完全由上模保证。 To blow both sides of the evaporator tube has been inflated into a closed rectangle, demoulding difficulties. This article describes a double curved special machine for reference. First, the forming principle shown in Figure 1, the workpiece placed on the pad, the upper die down the workpiece, the die continued downward, the workpiece bending between a pair of rubber rollers. Bending after die return, the workpiece from the bottom of the top. Evaporator cavity size and bending radius is completely guaranteed by the upper mold.