Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Measuring a weight or volume
Patent
1978-03-30
1981-01-27
Czaja, Donald E.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Measuring a weight or volume
264113, B29J 508
Patent
active
042474973
ABSTRACT:
The production of a mat of wood chips and/or fibers, hereafter called wood particles, by a spreading station and a weighing device, is controlled in a closed loop circuit for uniformity, directly during the spreading of the wood particles. Several spreading devices form a spreading station. Electrical signals emanating from a tared weighing device which is arranged downstream of a first spreading device as viewed in the direction of travel of a conveyor belt, are used to control the output of the first spreading device. If desired, the output of one or more spreading devices located downstream of a weighing device may also be controlled in a closed loop circuit, whereby the weight of the partially formed mat moving over the weighing device produces the electrical control signal which is compared to a predetermined reference signal for controlling the production of the finished mat having one or several layers.
REFERENCES:
patent: 2921712 (1960-01-01), Dickerson
patent: 3303967 (1967-02-01), Munson
patent: 4038531 (1977-07-01), Loe, Jr.
Czaja Donald E.
Fasse W. G.
Firma Carl Schenck AG
Hall James R.
Roberts W. W.
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