Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Separating means
Patent
1987-04-14
1989-02-21
Cherry, Johnny D.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Separating means
198370, 198706, 198714, B07C 308
Patent
active
048057800
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. The Field of the Invention
The invention concerns a sorting machine of the type having trays which are moved in an endless path extending in a vertical plane in such a manner that the trays face upwardly both in the upper and the lower run of the path, the trays being pivotally suspended between two synchronously driven conveyors, a plurality of stationary unloading means being provided below the upper and/or lower run of the path and for each receiving means a selectively controllable activation means which is adapted, in its activated state, to be caused to engage a passing tray so that the tray is pivoted for emptying the contents onto the associated receiving means.
2. The Prior Art
The DE-AS No. 25 46 748 discloses a bucket elevator or conveyor which is constructed in the same manner as is stated above, although it is intended for bulk goods and not individual articles, such as small parcels and the like.
U.S. Pat. No. 3 055 486 discloses a bucket conveyor of a similar type for transport of bulk goods from a supply station to one of a plurality of unloading stations.
SUMMARY OF THE INVENTION
The object of the invention is to provide a sorting machine of the type stated in the opening paragraph, which requires little space and has a great sorting capacity, while the activation means used and their cooperation with the individual trays during emptying are simpler than in the first-mentioned prior art, and which enables the individual trays during emptying to be optionally pivoted with the opening in a forward direction (headwind) and in a rearward direction (tail wind).
This object is achieved according to the invention in that the sorting machine stated in the opening paragraph in which at least one side of each tray carries two wheels which are placed above and below the pivot axis of the tray, respectively, in the tray equilibrium position, and which are adapted to be caused to engage an activation means disposed above and below the pivot axis of the tray, respectively, and consisting of a lever which is mounted for pivotal movement about a horizontal shaft in the sorting machine.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be described more fully below with reference to the drawing, in which:
FIG. 1 is a lateral view of one end of a sorting machine according to the invention, and
FIG. 2 is a top view, on a larger scale, of the same end of the sorting machine of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The sorting machine shown in the drawings contains a plurality of trays, 1a, 1b, 1c, 1d, 1e, 1g . . . preferably of aluminium and with a V-shaped bottom 2 and side members 3 and 4. These trays are at both sides pivotally suspended from arms 5 which are secured at the top, at 6, to their respective ones of chains 7 and 8 driven in synchronism and by the same drive motor (not shown), these chains being indicated in the drawing in broken lines. The chains 7 and 8 preferably consist of steel wires placed around a chain wheel at each end of the sorting machine.
Since only one end of the sorting machine is shown in the drawing, only one chain wheel 9 and 10 is visible for each steel wire 7 and 8, respectively.
As mentioned, the trays are pivotally suspended from arms 5. The suspension point 11 of the trays is disposed above the centre of gravity of the trays, so that their V-shaped bottom 2 usually assumes a horizontal position.
Projections in the form of wheels 12 and 13, respectively, are secured above and below the suspension point 11 on the external side member 4.
Below the trays on both the upper and the lower run of the path, a plurality of stationary chutes 14 is placed at even intervals in a machine frame (not shown), in which a corresponding number of levers 16 is secured, these levers being pivotable about a horizontal shaft 15.
The levers 16 can be caused to assume an activated state by means of their respective pneumatic cylinders 17, during which the levers 16 associated with the upper path run are caused to engage the lowe
REFERENCES:
patent: 3055486 (1962-09-01), Meyer
patent: 3088629 (1963-05-01), Seymour
patent: 3401796 (1968-09-01), Hagiz
patent: 3750860 (1973-08-01), Jaffre
patent: 4509635 (1985-04-01), Emsley et al.
Cherry Johnny D.
Hajec Donald T.
ITS-Intern Transport System A/S
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