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Weigh Scale Container Filling Automation Systems

Weigh Scale Container Filling Automation Systems

EMI offers three types of container filling options: Weigh Scale, Conveyor mounted Weigh Hopper, and a Portable Weigh Hopper

A Weigh Scale System is an excellent choice when a high degree of accuracy is required. Many molders choose a weigh scale system when small parts need to be packed into shipping or storage containers, because it minimizes the chances of too few parts being packed because of machine failure, bad shots, etc.


  • “No Empty Box Alarm”, “Full Box” and “Alarm Condition” Indicator signals no container in next fill station and separate light indicates situation hasn't been corrected
  • Weigh Scale, Two Speed Cut-off for multi-cavity molds. Increases reliability of fill weight. Variable Speed Drive and two weigh set points provide a “creep” speed near fill weight to trickle in parts until shut off at fill weight
  • Floating Beam Load Cell
  • Under the Press Indexing with Inspection Cycle
  • Process Control Tie-in

Automated Tote Dispenser System

Weigh Scale Controls:

The NEMA 1 enclosure includes a weigh scale push button control and display for the platform. A cleat-sensing limit switch, mounted on the empty box holding conveyor, ensures positive container movement. A photo-eye assures correct positioning. Also included: on/off switch, manual reset button, programmable control and interfacing relay.
A recommended option is the No Empty Box alarm, with Alarm Condition indicator.

Simple Installation:

Once the under press and beside press conveyors are positioned, the system can be plugged in. Conveyors, weigh scale and photo-eye are pre-wired into the control system. The under press conveyor plugs into the control system. The operator then simply enters the desired weight or piece count into the scale control.


Weigh Scale Automation Cell:

  • Empty boxes are loaded onto bottom level indexing conveyor
  • Parts are placed by a robot onto the top conveyor, where they are cooled in a chilled air tunnel
  • The cooled parts are fed into containers waiting in the weigh-scale fill position on the lower level
  • When the preset weight is reached, a sweep arm moves the filled container onto the gravity roller storage conveyor

A Note About Static Electricity: EMI’s standard weigh scale control system employs special circuitry to minimize interference from static electricity. Among the several brands of weigh scale systems available, we have found this system to be superior in operation at typical plastic processing plants. Some molders add an ionizing unit to further reduce interference, particularly when molding nylons. An additional benefit to using an ionizer is reducing dust and dirt attraction to parts.

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This feeding conveyor has a static neutralizer and drops parts onto the weigh scale.

weigh scale

Side-by-Side Roller Conveyors with Weigh Scale & Transfer Station

ATS with weigh hopper

ALTK Conveyor brings parts up to custom discharge chute and onto the weigh scale

weigh scale application

EAC Conveyor with indexing rails and EA-ID Internal Drive brings parts up to a discharge chute and onto the weigh scale

weigh scale application

Parts drop into chute and feed the weigh scale then the vertical conveyor cycles filled boxes up to the roller.

weigh scale application

This under the press conveyor feeds a weigh scale that has alarms for empty and full boxes. Also includes a EA-PLC for bad part reversing.

weigh scale application