Cooling apparatus on a plastics injection molding machine

Details Cooling apparatus on a plastics injection molding machine Cooling apparatus on a plastics injection molding machine

B - Operations, Transporting

29

C

18/708

B29C 45/26 (2006.01) B29C 45/72 (2006.01) G05D 23/19 (2006.01)

Patent

CA 1270615

Abstract of the Disclosure The flow rates in the cooling circuits of the apparatus can be controlled with the aid of a computer by means of ceramic turning valves. The computer is connected to the central computer of a plastic injection molding machine. The valve body disks, lying under constant pressure via ceramic sealing surfaces against valve seat disks, can be turned by means of pulse-controlled electric motors. Each fitting has a valve channel between the channel section of the supply channel and the channel section of the discharge channel which is covered by a valve seat disk and which forms a valve chamber. This achieves the effect that the deviations from the set temperature in the temperature-critical zones can be substantially reduced with acceptable technical expenditure. The temperature constancy achieved may be maintained for a virtually unlimited time without appreciable maintenance work.

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