Weighing scales – Computer – Electrical
Patent
1981-10-01
1983-12-13
Miller, Jr., George H.
Weighing scales
Computer
Electrical
177 52, 177145, 198473, 198504, G01G 1922, G01G 1300, G01G 1900, B65G 3700
Patent
active
044200510
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a weighing apparatus, which uses combinational analysis and a transfer systems of simple mechanisms, thereby making it possible to automatically weigh not only objects which can be automatically fed and weighed but also other objects which it has heretofore been impossible to automatically weigh because they cannot be automatically fed, the intention being to provide a preset weight value or a value nearest thereto.
To this end, the invention provides a weighing apparatus comprising a plurality of transfer and weighing lines each consisting of a bucket conveyor having a plurality of buckets for transferring objects to be weighed, and a weighing unit for weighing the buckets with objects held therein, said apparatus being adapted to drive the bucket conveyors to successively weigh the objects held in the buckets, store a predetermined number of measured weight values of the objects for each transfer and weighing line, and compute a desired or predertermaned number of combinations of the stored weight values to obtain a combination which provides a preset weight value or a value nearest thereto.
According to the invention, not only objects which can be automatically fed and automatically weighed can be automatically weighed but also other objects which it has heretofore been impossible to automatically weigh because they cannot be automatically fed, can be automatically weighed by manually feeding them. Further, a target weight or a weight nearest thereto can be obtained in a short time by electronic circuitry, while the objects which have not taken part in the optimum combination can be weighed again to be used in other combinational computations, thereby increasing the computational capacity. As compared with this type of conventional weighing apparatus based on combinational computation, the number of weighers required is only 1/2 to 1/3 as large and the large-sized pool hopper and weighing hopper are dispensed with, so that the entire apparatus is simple.
This and other objects and features of the invention will become more apparent from the following description taken in conjunction with the accompanying drawings. In the drawings:
FIG. 1 is a schematic elevational side view of a weighing apparatus according to an embodiment of the present invention;
FIG. 2 is a fragmental perspective view of a bucket conveyor shown in FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1, showing means for placing buckets on a weighing unit;
FIG. 4 is a section taken along the line IV--IV of FIG. 3; and
FIG. 5 is a block diagram of electronic circuitry for the weighing apparatus shown in FIG. 1.
In FIG. 1, the numeral 1 denotes a bucket conveyor having a number of buckets 5 attached to a pair of roller chains 4 meshing with driving and driven sprocket wheels 2 and 3. The numeral 6 denotes a drive motor for the bucket conveyor 1. The numeral 7 denotes a weighing unit for weighing objects fed into the buckets 5, disposed below the bucket conveyor 1. The numeral 8 denotes guide plates for guiding the buckets 5 to the weighing pan 9 of the weighing unit 7 so as to place them on said weighing pan, with sprocket wheels 10 and 11 of small diameter disposed on opposite sides of said weighing pan, the arrangement being such that the roller chains 4 move horizontally and then around the sprocket wheels 10 to descend along the guide plates 8 and then they ascend along the guide plates 8 until they return to their horizontal travel, as will be later described. The numeral 12 denotes a discharge chute disposed below the end of the bucket conveyor 1; the numeral 13 denotes a collecting conveyor; and 14 denotes a timing hopper. As will be later described, it is so arranged that after combinational computations of the weight values of objects weighed by the weighing unit 7 have been made, the buckets containing the objects corresponding to the combination providing the preset weight value or a value nearest thereto are tipped above the discharge chute 12 as shown in phantom line by a bucket tipping
REFERENCES:
patent: 285663 (1883-09-01), Pearce
patent: 2716479 (1955-08-01), Coder et al.
patent: 3997013 (1976-12-01), Brook
patent: 4163488 (1979-08-01), Brook
patent: 4308928 (1982-01-01), Oshima
patent: 4344492 (1982-08-01), Hirano
Furuta Mitsuru
Nakashimizu Takeo
Kabushiki Kaisha Ishida Koki Seisakusho
Miller Jr. George H.
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