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Low Piece-Count Combination Scale Solves Reject Reintroduction Problem

Reject reintroduction process via a rotating reject ring at the bucket level, not below it, allows for aggressive feeding of low piece count bagging.

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Low piece-count weighing applications—think of larger granularity items like ketchup packets or IQF fishsticks—can be tough with standard combination scales in bagger/weigher formats due to overfilling of the buckets.

“If you’re trying to have the scale count to two pieces, and a single bucket has four pieces in it, that lane will automatically be inhibited since it is an overweight,” said Dustin Literski, General Manager of OEM sales at Yamato, during the video demo. “When this happens, the overfill buckets must be removed manually. If you don’t remove overfill buckets manually, the scale will begin losing combinations. Each head that is an overweight reduces combinations by half.”

To address this issue, Yamato Scale’s patented new SVR counting system, designed specifically for low piece-count weighing applications.

The problem
When targeting low counts, the feed to the scale is crucial to prevent bucket overfeeding. Depending on the products' characteristics—again, flat, rectangular ketchup packets were used in the demo, or IQF fish sticks—dams or shingling in the buckets can occur, which are destined to create overfills requiring manual removal. If they’re not addressed by an operator, a common occurrence is product being caught in the seal, a recipe for downtime and wasted film.

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