WEIGHERS INCREASE SPEED AND PRODUCTIVITY FOR CHICKEN NUGGETS
The two new high-performance systems feature two Ishida CCW-RV multihead weighers that are capable of delivering up to 90 weighments per minute, depending on the product which can be frozen or chilled. For quality assurance purposes, G+G Convenience has also installed four Ishida DACS-G checkweighers, which check the target weight against a particular part of the process at two different production points on the lines. The 14-head weighers are alternately fed from the processing lines at 30-second intervals. A dispersion table loadcell regulates the product feed to the radial feeders to ensure an even flow of nuggets. The feeders convey the product to the pool hoppers, which hold it for a short time to stabilise the product, before releasing it to the weigh hoppers directly underneath. A microprocessor then calculates in a fraction of a second the best combination of weigh hoppers that comes closest to the target weight, and the selected hoppers discharge the chicken nuggets via a timing hopper into the bagmaker below. Each pack contains between 10 and 20 pieces with fill weights from 250g to 500g. The target weight calculation process takes into account the piece weight of a single nugget (19.5g) to ensure that the pre-set quantity is always met. In rare cases, a pack may contain one extra chicken nugget, but is never one short. If a pack is found to have the incorrect weight, a signal is sent to the bagmaker, which produces a double bag that is rejected. The introduction of the two Ishida CCW-RV weighers has enabled G+G Convenience to achieve an output of 2.6 tonnes per hour compared to 1 tonne previously. “The settings for the weigher sections can be configured separately to ensure consistent weights are made,” said Martin Warzukowski, head of the convenience department. “Ensuring consistently high performance is very important. We run a three-shift operation and cannot afford any downtime.” Hygiene-enhancing special water resistance As well as high performance, G+G Convenience required robustness from its new multihead weighers. To meet the demands of handling frozen chicken nuggets, sturdy embossed stainless steel was chosen for the contact surfaces. Another important factor is moisture protection. The IP69K-certified, sloped-surface and hygiene-friendly construction means all parts of the weigher, including the drive units, are highly protected against water ingress during high-pressure and steam jet cleaning. “Water resistance is an important factor in how we use the multihead weighers,” confirmed Martin Warzukowski. For G+G Convenience, the investment in the new Ishida multiheads and checkweighers for chicken nuggets has been a resounding success. “All performance targets are being met and the system efficiency is over 90%. We have also received fantastic service from Ishida during installation and continue to do so,” concluded Martin Warzukowski.