Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Sorting lumber – logs – pipes – rails – or like items
Patent
1983-09-09
1986-09-09
Reeves, Robert B.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Sorting lumber, logs, pipes, rails, or like items
209521, 209933, 414 42, 414 49, 414 60, B07C 514
Patent
active
046103600
DESCRIPTION:
BRIEF SUMMARY
The present invention primarily concerns installations for the stacking of piles of stick-separated lumber, mainly boards and planks. It is known to sort sawn lumber by means of a lumber conveyor and the so-called sink-compartments, one for each type of lumber, into which the conveyor loads the lumber from above, causing a sink-compartment to descend while it is gradually loaded. In the known installations the lumber carrying part of the sink-compartment is flexible and may be manufactured of belts or similar material. Therefore the stick-laying of the lumber into the sink-compartnent is not possible without having the lumber packets which are removed from the sink-compartment stick-laid in a subsequent operation. Installations for this purpose are known in which the lumber is fed to the pile from one direction, for example from above, while the sticks are fed from another direction, for example from a side, by means of a special stick conveyor and a stick loader.
The main purpose of the present invention is an installation for stacking of the stick-separated lumber piles, in which both the lumber and the sticks are transported and piled by one and the same conveyor.
Another purpose of the invention is to produce an installation by means of which the lumber is deposited in piles at a controlled reciprocal distance between the boards or the planks, so that the piles contain a minimum of empty spaces.
An additional purpose of the invention is to produce an installation of the said type which includes a stick hopper with a device for programmed removal of the sticks by means of the lumber conveyor in measure with the planned delivery of the lumber to the piles.
A further purpose of the invention is to produce a sink-compartment for an installation of the said kind which includes straight cross-beams forming the bottom of the sink-compartment and enabling the stick-laying of the lumber in the sink-compartment itself. These beams can be transferred by means of special devices from their lowest position during the removal of the lumber pile from the hopper to its upper position in which the sink-compartment is ready for a new loading with lumber and sticks.
An installation in accordance with the invention has the characteristics indicated in the claims.
The construction of an installation in accordance with the invention will now be described in detail with reference to the attached drawings. In the drawings
FIG. 1 shows an outline of the installation in lateral view.
FIG. 2 shows the installation according to FIG. 1 seen from above.
FIG. 3 is a lateral view but on a larger scale than in FIG. 1, of an empty sink-compartment according to the design of the invention together with a section of the lumber and stick conveyor.
FIG. 4 shows the sink-compartment according to FIG. 1 seen from above.
FIG. 5 shows the compartment according to FIG. 3 partly filled with stick-separated lumber.
FIGS. 6 and 7 show from a side and from above, respectively, a lumber-carrying underlayer beam forming part of the sink-compartment.
FIG. 8 shows in lateral view one of the reciprocally matching units forming the lumber and stick conveyor.
FIG. 9 shows on a larger scale and in lateral view the installation according to FIG. 8.
FIG. 10 shows on a somewhat larger scale than FIG. 1 and in lateral view, a stick hopper with an unloading device included in the installation, and
FIG. 11 shows from above the section of the installation which contains the predetermined number of stick hoppers according to FIG. 10.
In FIG. 1, the numeral 1 designates a lumber conveyor which, for example, brings the lumber to be piled from a lumber bunker to an acceleration conveyor 3. The latter consists of a number of belts or chains 4 which run over pulleys or sprockets 5 and 6 and are driven by devices not shown in the drawing in an already known manner. The conveyor 3 is arranged to transfer lumber to the lumber conveyor 9 by means of lumber carriers 7 which have a hook-shaped profile, and from now on will be referred to as "lumber hooks". The lumber is tran
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Reeves Robert B.
Wacyra Edward M.
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