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Checkweigher keeps hobbyists happy

People who assemble plastic scale models as a hobby are not amused when the Titanic they brought home is missing a smokestack, or their Mustang GT has only three wheels.
FILED IN:  Machinery  > Inspection  > Checkweighers

After all waiting around for replacement parts by mail is not what they bargained for when they plunked down their money. Revel/Monogram of Morton Grove IL the leading U.S. maker of scale models has reduced the likelihood of an incomplete kit reaching a customer by installing an in-line Ishida checkweigher from Heat and Control (Hayward CA). Running since January '97 the instrument sits a short distance downstream from the machine that applies lids to cartons. The cartons travel over the scale's conveyor belt beneath which is a load cell to detect any carton deviating ±3 g. Faulty cartons are automatically kicked into a reject bin. "It also detects short shots" says vice president of manufacturing Jim Foster. "So if the bucket seat of a car for instance didn't get completely formed during the injection molding process and consequently weighs less than it should the carton it's in will be detected and rejected." Revel/Monogram keeps the checkweigher busy. The Morton Grove plant molds 'round the clock and packages two shifts/day churning out nearly 55 kits. So far only one of three packaging lines includes a scale. But that will change this summer as the packaging operation at Revel/Monogram gets a complete makeover and at least one more checkweigher is added.

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