Weight variation in wet or baked product could be due to Dividers malfunction or Cutter /Moulders setting or configuration . The major steps is to rectify the problem in the equipment first but for detection purpose bakery plants to set up in motion check weighers after packing section in biscuit manufacturing and checkweighers at dividers end to measure the weight of the dough piece . Installation of check weighers would make the conventional table top scales obsolete at some places . These check helps bakery manufacturers in two ways
You can be sure of the weights products which comes through check weighers and its legal requirement for all manufacturers to adhere to the declared weight with some tolerance s. Over weight
Any variation of weights whether Under weights or Over weights does harm company interests . Corrections can be done at manufacturing areas to get the proper weight of the product
Working Principle of Checkweigher
Work on Pneumatic applications, pneumatic cylinders are used for retraction or folding of conveyors for rejection of packets. Product s are put on the conveyors which have load cells which gauge s weight and send signals to the pneumatic cylinders which are activated through .valves compressed air then either retracts or pushes the folding conveyor or some checkweighers have pneumatic nozzles on the conveyors surfaces which pushes the under weights and overweights through blast of compressed air .Which drops the under weight or over weight packets . One has to check the packing machine output to synchronize with check weigher .
Specification of Check weighers
Products/per minutes- packets/min Set Weights = +/- gms Tolerances =+/- gms Air Pressure = kg/cm2 Major manufacturers of checkweighers Mettler Toledo Ishida Lock Inspection Sartorius Wright Machinery Check weighers now days have data storage where all details of weights of the product can be stored and can be retrieved analysis. Any variation of weights whether Under weights or Over weights does harm company interests . Corrections can be done at manufacturing areas to get the proper weight of the product.