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In-Cavity resin pressure measuring system

Failure detection in molded products

Failure detection in molded products

Using alarm signals caused by variations of waveform to a reference waveform, the system detects molding failure, such as short shots and over packing.

■ Example of what to do when detecting a defective product
  • Prevention of continuous production of defective products (stop the molding machine)
  • Sorting of defective products (automatic sorting using a device such as an ejector)

Cavity Balancing and Flow Analysis

Mold structure analysis and flow analysis

You can check the quality of the molds by analyzing the pressure and elapsed time until the resin reaches the sensor.

■ What you can check from the flow analysis
  • Check the runner balance and gate balance
  • Check after adjusting the runner or gate
  • Verification of flow analysis results
  • Check the mold release resistance value

Determination of molding conditions when the molding machine or the molding location has changed

Determination of molding conditions when the molding machine or the molding location has changed

Save the waveform of a good product (reference waveform) beforehand and use the same waveform for molding so that you can produce molded products with the same quality.

■ Example of changes in condition
  • Offshoring
  • When the molding machine is changed (manufacturer, capability, or type)
  • When the usage environment has changed (factory or outsourcing)

Instant detection and isolation of bad parts

Check correlation between in-mold resin pressure waveform and molding failure

Save the waveform of a good product (reference waveform) beforehand and use the same waveform for molding so that you can produce molded products with the same quality.

■ Failures you can determine from the pressure waveform
  • From waveform measurement values
    Increased ⇒ Burr/over packing
    Decreased ⇒ Short shot/sinks
  • From a projected waveform
    Large ⇒ Large mold release resistance value
    Small ⇒ Small mold release resistance value