Product category:
Food and drink manufacturing: processing equipment
News Release from: Mettler Toledo | Subject: Starweigh Checkweigher
Edited by the Manufacturingtalk Editorial
Team on 17 March 2005
Starwheel checkweigher has high accuracy
Claimed to be the world's first starwheel-based checkweigher, it maintains high throughput and unparalleled accuracy while handling the widest range of container sizes.
Mettler-Toledo Hi-Speed will exhibit the Starweigh Checkweigher at Interphex booth 1305 Starweigh, the world's first starwheel-based checkweigher, maintains high throughput and unparalleled accuracy while handling the widest range of container sizes
This article was originally published on Manufacturingtalk on 16 Jan 2008 at 8.00am (UK)
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One Starweigh Checkweigher can be changed over to handle containers from 30cm3 to 2000cm3; it achieves an accuracy of +/-15mg at 3 sigma and line speeds from 20 to 400cm/min, depending on the specific Starweigh model selected.
Starweigh is ideal for hard-to-handle packages including round, oval, rectangular and square containers made of plastic, metal and glass from 0.75 to 6.5in in diameter as well as odd-shaped products such as mascara or commemorative coins.
Product is fed from a conveyor into pockets in the unique starwheel.
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METTLER TOLEDO, have provided Butlers Farmhouse Cheeses, with an exceptionally rugged 1500mm x 1500mm industrial floor scale solution to provide checkweighing of their dairy products
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Multiple packages are accumulated into each pocket, which features as many as six sub-pockets, each aligned to a separate scale so each package is isolated as it is weighed.
Unlike traditional checkweighers, which feature a belt configuration that forces users to compromise accuracy to handle a wide range of product volumes, the Starweigh is equipped with multiple weigh pans to achieve the highest accuracy for a wide range of product sizes and weights.
Superior accuracy is delivered on Starweigh with an auto-correct function that re-calibrates and re-zeros each scale with every revolution of the starwheel.
This feature corrects for any product build-up and any long-term drift of the weigh cells and electronics.
Achieving superior precision assures that containers with missing tablets, components, leaflets and low fluid levels are rejected from the production line while false rejects are virtually eliminated.
Starweigh can be mounted over an existing conveyor; installation can be accomplished in only two or three feet of conveyor depending on the model selected.
Since product need not be timed or spaced, as is required of other checkweighers, Starweigh eliminates problematic belt transfers and offers positive product handling.
The system's innovative starwheel assembly can be easily swapped out to accommodate products of widely varying sizes.
Changeovers can be accomplished in less than one minute with no tools required.
The system's Checkmate control manages the multiple scales simultaneously.
As each pocket is filled, the starwheel indexes via a precision servo motor system.
Each scale has a dedicated drop-through rejecter that diverts out-of-tolerance packages off the production line.
The Checkmate controller can be pre-programmed with as many as 100 product recipes to ease use and speed changeover.
Starweigh has been developed to handle a number of specific process control functions such as integration with a tare-gross, feed forward and/or feedback systems.
About Mettler-Toledo Hi-Speed - for over 50 years, Mettler-Toledo Hi-Speed has provided dependable, cost effective and innovative packaging solutions to the world's leading food, beverage, pharmaceutical, chemical, durable and non-durable goods companies.
Certified to ISO 9001 quality standards, the company designs and manufactures checkweighers, material handling systems and robotic case packers that offer accuracy, flexibility and rugged reliability. Request a free brochure from Mettler Toledo ...
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