Pick-by-Weight

Pick by Weight

The use of precise scales in Pick-by-Weight order picking helps to count large quantities and ensures the quality of order picking. The integration of different scales is LUCA-Server possible without any problems. A static scale directly in the picking process ensures quality much better than a weight check in the final inspection.

The weighing process and calibration

With the help of various picking systems, e.g. Pick-to-Light the removal tray and the number of items are signalled. The removal is confirmed on the display. The number of items on the picking tray starts flashing and the tare of the scales is set to zero. The employee places the pieces on the scale. The scale display shows the "remaining piece count". If the piece count is correct, the scale display shows "0" and the LED turns green. Any remaining piece count can be put back into the flashing storage compartment and acknowledged. The process is not very fast, but it guarantees very high quality.

If required, a weight calibration of the items can be carried out at any time. We will be happy to provide you with the details in a personal conversation.

Weighing and counting, but correctly

The most important criterion for using scales at all in the picking or shipping process is the stability of the weights for individual items. For items where the weight cannot be determined precisely, the use of a Pick-by-Weight method is not possible. If the items are weight-stable, the question then arises as to when it is best to weigh. Unfortunately, there is no simple answer to this question. Many factors have to be taken into account in the issue.

Questionnaire for finding solutions:

  • Are the weights of all items comparable or do they differ greatly?
  • How large are the weight deviations in the tolerances of the individual articles?
  • What quantities are picked?
  • What performance must the process deliver?
  • How can the workplaces be designed?
  • Adaptation to any wagon possible

We can help you answer these and other questions in workshops.

Avoid common planning mistakes

It is often claimed that a checkweigher directly from the point of failure on the conveyor system is sufficient for quality assurance of the consignments. Unfortunately, this is rarely true. Without tare detection at the beginning of the conveyor line, correct net detection is hardly possible. With cardboard boxes, even the humidity plays a very big role. Sometimes the weight of the lightest item lies within the weight tolerances of the heavy items, which makes correct weight checking impossible. For this reason, it is best to use the checkweigher directly in the picking process and not at the end.

When calculating the total tolerance, at least half of the lightest item should always be taken into account. However, the result is not satisfactory because then almost every item becomes faulty.