UM25001C
5 5 Heat-Cool Control
5 5 Heat-Cool Control
An injection mold required to be controlled at 120 C to ensure a consistent
quality for the parts. An oil pipe is buried in the mold. Since plastics is injected
at higher temperature ( e.g. 250 C ), the circulation oil needs to be cooled as
its temperature rises. Here is an example:
An injection mold required to be controlled at 120 C to ensure a consistent
quality for the parts. An oil pipe is buried in the mold. Since plastics is injected
at higher temperature ( e.g. 250 C ), the circulation oil needs to be cooled as
its temperature rises. Here is an example:
Plastics
Oil
Pump
Oil
Pump
Oil Tank
Oil Tank
Heater
Supply
Heater
Supply
Freezer
4-20 mA
4-20 mA
OUT2
RTD
OUT1
IN1
Figure 5.7
Figure 5.7
Heat-Cool Control Example
Heat-Cool Control Example
Injection Mold
120 C
Injection Mold
120 C
88
O1
O2
A1
C
