Pick-by-Weight
A counting scale in conjunction with pick-by-light helps with picking large quantities, increasing and ensuring quality. Various scales can be LUCA-Server integrated into the LUCA-Server . A scale directly in the picking process ensures quality much better than a weight check of the entire shipment in the final inspection.
The weighing process and calibration are supported directly by the LUCA system.
Various picking systems, such as pick-by-light, are used to indicate the picking compartment and the quantity. The pick is confirmed on the display. The quantity in the picking compartment starts to flash and the tare weight of the scale is set to zero. The employee places the parts on the scale. The scale display shows the "remaining quantity." If the number of items is correct, the scale display shows "0" and the LED turns green. Any remaining items can be returned to the flashing storage compartment and confirmed. The process is not very fast, but it guarantees very high quality. If necessary, the weight of the items can be calibrated at any time. We would be happy to provide you with more details in a personal consultation.
In order to count correctly with the scales, certain criteria must be met.
The most important criterion for using scales in the picking or shipping process is the stability of the weights of individual items. For items where the weight cannot be determined precisely, it is not possible to use a Pick-by-Weight. If the items are weight-stable, the question then arises as to when is the best time to weigh them. Unfortunately, there is no simple answer to this question. Many factors must be taken into account.
Questionnaire for finding solutions:
- Are the weights of all items comparable, or do they vary greatly?
- How large are the weight deviations in the tolerances of the individual items?
- What quantities are being picked?
- What performance must the process deliver?
- How can workplaces be designed?
- Can be adapted to any car
We would be happy to support you in workshops when answering these and other questions.
Weight control directly during picking delivers the best results.
It is often claimed that a checkweigher directly at the point of error on the conveyor system is sufficient for quality assurance of shipments. Unfortunately, this is rarely the case. Without tare weighing at the start of the conveyor line, it is almost impossible to achieve accurate net weighing. In the case of cardboard packaging, even humidity plays a very important role. Sometimes the weight of the lightest item falls within the weight tolerances of the heavy items, making it impossible to check the weight correctly. 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 shipment becomes defective.
