Refrigeration – Processes – Treating an article
Patent
1997-08-12
1999-11-16
Capossela, Ronald
Refrigeration
Processes
Treating an article
62237, 62337, F25D 1306
Patent
active
059836482
DESCRIPTION:
BRIEF SUMMARY
The invention concerns a method for selectively assembling for despatch on the basis of intended destinations frozen items which outside a frozen full pallet store are taken from the full pallets.
The invention also concerns an installation for selectively assembling frozen items for despatch on the basis of intended destinations comprising a frozen full pallet store and a conveyor device for conveying the full pallets between the full pallet store and a depalleting zone outside the frozen full pallet store.
It is already known from German laid-open application (DE-OS) No 40 21 665 to effect the selective assembly of items for despatch thereof on the basis of intended destinations, starting from full pallets, outside a frozen trough or tub store. In that procedure the items are sorted in a frozen sorting buffer and are then assembled again outside the frozen area to give mixed or hybrid pallets.
The object of the present invention is to provide an improved method and an improved installation for selectively assembling frozen items, with which faster selective assembly of frozen items for despatch on the basis of intended destinations is possible, wherein the frozen chain is not interrupted and nonetheless the working places are outside the frozen area.
In accordance with the method of the invention it is provided that in a depalleting zone outside the frozen full pallet store all items of a full pallet are transposed into storage troughs or tubs, whereupon the storage troughs or tubs are passed to a frozen trough or tub store, and that in a selective assembly zone outside the frozen trough or tub store items are taken from the troughs or tubs which are passed into the selective assembly zone and then the storage troughs or tubs are passed to the trough or tub store again. The installation according to the invention is characterised by a frozen trough or tub store for the storage of storage troughs or tubs, a selective assembly zone outside the frozen trough or tub store, and conveyor devices for conveying the storage troughs or tubs from the trough or tub store to the depalleting zone and back and from the trough or tub store to the selective assembly zone and back.
That affords the following advantages:
The storage tubs can be moved more quickly than full pallets and mixed or hybrid pallets, for example it is possible for the storage tubs to be moved at 2 m/s. In that way it is possible to reduce the residence time in the selective assembly zone which is outside the frozen area, and thus to eliminate the risk of an interruption in the frozen chain.
The high acceleration capability of the storage tubs which are to be loaded at most right up to the edge is to be evaluated as positive in the same sense as--unlike the situation with the basically open pallets--no package articles (items) can fall out of the storage tub. The ratio of maximum possible accelerations between storage tubs on the one hand and pallets on the other hand is 10:1.
The possibility of rapid weight checking of the easily handleable storage tubs is also advantageous.
Further advantages and features of the invention will be described in greater detail with reference to the specific description hereinafter. In the drawing:
FIG. 1 is a diagrammatic plan view of an installation according to the invention for carrying out the method according to the invention,
FIG. 2 shows an embodiment of a storage trough or tub according to the invention, and
FIG. 3 is a diagrammatic plan view of a selective assembly place in the selective assembly zone.
The item coming in from the production factory is delivered at an assumed core temperature of -27.degree. C. in refrigerated goods vehicles (item entry WE (TKK)). The docking process follows the procedure which is usual in modern installations, with the item being shielded from atmospheric influences. The palleted item is put at a temperature of -27.degree. C. on to automated conveyor installations and put into store for the purposes of identification by way of the so-called I-point disposed upstream of the h
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