Using up/down elevator carrying system, to extend the Shaping time, which make the coldShaping forming result better.
采用上下梯级式输送，大大加长了制冷行程，使鞋子制冷定型效果更好。
2
The design theory of involute spline roller was given by analyzing the processes of cold rolling involute spline. It is incorrect to use the way of shaping method.
The utility model relates to a hot shrinkage pipe device which can evenly hot blow a plastic pipe to be deformed and quickly cold blow the deformed plastic pipe for shaping.