Mode of Operation

1. Relevant product code is selected (see above).

2. Product to be weighed is placed into the hopper (A).

3. Hopper gate (B) is opened sufficiently to allow the product to move out freely.

4. Run button on controls is pressed.

5. Product moves along rear vibrator tray (C) at its FAST speed.

6. Level detector (G) controls rear vibrator on/off to maintain correct depth of product in front tray (E).

7. Product moves along both bulk (large and fine (small)) sections of the front tray (E) at a FAST speed.

8. Product passes through both the bulk gate (H) and fine trap box (I), which are open, and into the weigh-pan (L). The lids of which are closed.

9. On reaching about 95% of the required target weight the bulk gate (H) closes and both vibrators (D) change to SLOW speed.

10. Product now only travels along the fine feed shelf (F) - through the fine trap-box (I) and into the weigh-pan (L) at a SLOW (trickle) rate.

11. When the target weight is in the weigh-pan (L) the feed stops completely, the fine trap box (I) lid shuts catching any product remaining in-flight.

12. The weight of product in the pan (L) is checked automatically and providing it has reached the minimum acceptable level can now be discharged.

13. If manual operation is in progress the user holds the container to be filled under the outlet chute (J) and presses a foot operated switch. The weigh-pan (L) opens releasing the product which travels down the chute (J), through the extension (K) (if fitted) and into the container.

If automatic operation is in progress the same principle applies except the signal to discharge in received from the associated ancillary packing machinery (bagmaker, carton presenter, pouching machine etc).

14. As soon as the weight is removed the pan lids close and the feed cycle re-starts.

This is only a brief description of events, and many additional operations take place - for example automatic zeroing, automatic tare, automatic in-flight correction, average weight trending etc. but in all cases the same basic rules apply. The real secret of good, fast accurate automatic weighing lies in combining the correct product feed system with a high quality weighing device and in utilising the latest electronic technology to best advantage.

Whatever your requirement whether a single manually operated machine to a complete, fully automatic, weighing and packaging line you can have confidence that through our experience and with our guarantee of quality, reliability, performance and service.

Easiweigh are manufacturers of Automatic Weighing Equipment, Packaging Machinery Sales and Service.