Case Study - Machine Controls for two-step PET blow molding leak detection

Case Number: 582-548

Description:

Electrical Control Panel, Control System Design & Engineering and Machine Controls for for a leak detection system sold as an add-on to blow molding machines.

Industry:

  • Recycled PET (rPET) resin production
  • Blow molding
  • Food & beverage
  • Plastic packaging industry

Services Provided by AMPS:

Volume:

50 systems/year initially and decreasing after 3 years

 

 

Customer Requirements:

  • Find bottles with defects (specifically a hole anywhere other than the top) and blow them off the blow molding line before they're sent to the filling line.
  • Utilize the existing ultrasonic sensor's analog output to signal a defective bottle to the PLC.
  • Must be able to track individual bottles inside the blow molder at high speed. Typical blow molders produce 12 bottles/second.
  • Intuitive user interface for setup. Must be versatile enough to work on a wide variety of blow molders.
  • High-speed graphing capabilities on the GUI.
  • After detecting a defective bottle, the system must track that bottle until it reaches either a mechanical or pneumatic reject mechanism for removing it from the line.
  • System must keep statistics pertaining to defective bottles and log the data to an SD card.
  • The electrical control panel must be Ethernet-ready for connection to the LAN.
  • The control panel must use disconnect plugs for all external connections to reduce installation time.

 

Solution:

  • AMPS designed a compact electrical control system with programmable GUI and integrated PLC from Horner APG as the backbone.
  • The PLC interfaces with the customer's existing blow molding machine.
  • All external machine connections are made through a high-quality, industrial quick-disconnect plug.
  • The system is packaged in an industrial enclosure, either polycarbonate or steel.
  • AMPS provided PLC/HMI programming for the entire system to include all the features listed above.

 

Key Products Used:

  • OCS (PLC with integrated color touch-screen) from Horner APG

 

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