CA2172310A1 - Apparatus and method for controlling a vibratory feeder in a weighing machine - Google Patents

Apparatus and method for controlling a vibratory feeder in a weighing machine

Info

Publication number
CA2172310A1
CA2172310A1 CA2172310A CA2172310A CA2172310A1 CA 2172310 A1 CA2172310 A1 CA 2172310A1 CA 2172310 A CA2172310 A CA 2172310A CA 2172310 A CA2172310 A CA 2172310A CA 2172310 A1 CA2172310 A1 CA 2172310A1
Authority
CA
Canada
Prior art keywords
pan
product
amplitude
weight
discharged
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2172310A
Other languages
French (fr)
Other versions
CA2172310C (en
Inventor
Oren A. Mosher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Upper Limits Engineering Co
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2172310A1 publication Critical patent/CA2172310A1/en
Application granted granted Critical
Publication of CA2172310C publication Critical patent/CA2172310C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
    • G01G13/02—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism
    • G01G13/022—Material feeding devices
    • G01G13/026—Material feeding devices by mechanical conveying means, e.g. belt or vibratory conveyor

Abstract

Apparatus and methods are shown for controlling a weighing machine in which product is fed into one end a vibratable pan of a vibratory feeder and is discharged from the other end, for example into a weigh bucket. In a first embodiment, the amplitude of vibration of a pan is measured and is compared to adesired amplitude. The measured amplitude is compared to a desired amplitude, and the amplitude of vibration is adjusted by modifying an input signal to a vibrator attached to the pan until the measured amplitude equals the desired amplitude. In a second embodiment, a mechanism is included to stop the loading of product into a pan when a predetermined amount of product has been discharged from a pan into a weigh bucket, and the weight of product in the pan is monitored as additional product is discharged into the weigh bucket. Only a preselected additional weight of product is subsequently discharged into the weigh bucket. A third embodiment involves at least two pans arranged in series, and the weight of product in the downstream pan is determined and monitored. The measured weight is compared to a desired weight of product in the downstream pan, and the amplitude of vibration of the upstream pan is adjusted, as needed, in a closed-loop manner to feed more or less product into the downstream pan to establish and maintain the desired weight in the downstream pan.
CA002172310A 1995-04-03 1996-03-21 Apparatus and method for controlling a vibratory feeder in a weighing machine Expired - Fee Related CA2172310C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/415,940 1995-04-03
US08/415,940 US5639995A (en) 1995-04-03 1995-04-03 Apparatus and method for controlling a vibratory feeder in a weighing machine

Publications (2)

Publication Number Publication Date
CA2172310A1 true CA2172310A1 (en) 1996-10-04
CA2172310C CA2172310C (en) 1999-11-30

Family

ID=23647858

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002172310A Expired - Fee Related CA2172310C (en) 1995-04-03 1996-03-21 Apparatus and method for controlling a vibratory feeder in a weighing machine

Country Status (3)

Country Link
US (2) US5639995A (en)
AU (1) AU5040796A (en)
CA (1) CA2172310C (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109823863A (en) * 2019-02-15 2019-05-31 石家庄钢铁有限责任公司 A kind of steel-smelting alloy and slag charge automatic blanking weighing charging device and method

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Publication number Priority date Publication date Assignee Title
CN109823863A (en) * 2019-02-15 2019-05-31 石家庄钢铁有限责任公司 A kind of steel-smelting alloy and slag charge automatic blanking weighing charging device and method

Also Published As

Publication number Publication date
US5639995A (en) 1997-06-17
US5767455A (en) 1998-06-16
CA2172310C (en) 1999-11-30
AU5040796A (en) 1996-10-17

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