抄録
Fundamental problems in automating the hot chamber die casting machine have been investigated by the authors since 1960 and the first automatic machine was completed in 1964. In our die casting shop, many hot chamber die casting machines are now being operated by means of the falling system. In this report, the automatic drop and/or falling systems of casting are mainly described. There are still many fundamental problems in the automatic operation of the die casting machine. For example, the automatic spraying system of the die lubricant is a difficult problem. With respect to design and manufacturing of dies, the hardness, draft and polishing of die cavities must be carefully considered and in relation to the die casting operation the temperature control of dies is very important.
The authors have also described a method of preventing the metal dribble from the sprue hole which is an obstacle in the automatic operation, and the special ejecting system of castings for dies without the double ejection system.
Moreover, the authors have described the integrated cast-trim operation system that authors have developed.
