Package making – Methods – Group forming of contents into a unit
Patent
1996-01-05
1998-09-29
Moon, Daniel
Package making
Methods
Group forming of contents into a unit
53501, 53502, B65B 0132
Patent
active
058131957
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a method and a system for isolating from an unordered flow of objects smaller or larger object groups which, upon being weighed, are brought to a temporary storing in containers, from which they can later on be let out for delivery in combination with other weighed object groups for forming respective total object groups with a desired total weight, these collected larger groups then being transferable to a packing station.
BACKGROUND OF THE INVENTION
The invention is primarily related to the handling of foodstuff pieces, e.g. for making portions of fish or chicken pieces. It is known that portions of such pieces can be built up by currently weighing the successively supplied pieces on a dynamic weight and thereafter, dependent of the weighing results, effect a selective supply of the pieces to different receiver containers placed along a further extending conveyor. What can be aimed at is that in the single containers total portions can be built up so as to have a desired weight, but it is required that the pieces are supplied one by one, such that an associated computer may all the time keep track of where the pieces are located.
With another known method for the making up of object portions the principle of combination weighing is used, whereby an unordered flow of objects is distributed so as to be received as undetermined portions in a number of weighing containers, in which the portions are weight determined, whereafter the computer looks for portions giving a total of the desired ultimate portion weight. Thereafter just these selected subportions are released into an underlying collector unit, typically a large hopper, from which they are delivered as one portion. For ensuring a good capacity it is actual here to make use of a considerable number of weighing units, and besides, these weighing systems, having the weighing units arranged in a straight or circular row, normally exhibit a considerable building height, because normally they comprise slanting sliding chutes for the objects/subportions. This also implies that these systems may well be suited for dry and rigid products, e.g. pastils and root crops, but not for soft and adhering products. For the invention it is a basic consideration that it will be possible to use the first mentioned working principle, i.e. using only a single dynamic weight, without the feeding flow of objects being ordered in consisting of single objects conveyed mutually spaced, namely if care is taken that an unordered feeding flow is caused, in a compulsory manner, to be separated in mutually spaced subportions, whether these comprising a single or more objects, prior to being fed to the dynamic weight. Hereby it is made possible to operate with the dynamic weighing even when the feeding flow is unordered, and also to operate with weighing portions comprising more objects; conventionally, the discussed weighing and sorting out principle has been associated with the handling of single objects, but it is highly advantageous when also plural object portions can be handled.
From EP-A-0,534,889 a combination weight using but a single weighing unit is known; an annular row of receiving containers, which would conventionally be stationary and each associated with a weighing unit, is arranged to be circularly movable such that the containers are successively passed over a weighing unit which, with deduction of tare, measures the weight of the single portions in the containers; these subportions may then be discharged in suitable combinations for collection in an underlying hopper, for which it is immaterial whether the circular container row rotates or stands still.
In this known portioning apparatus the supply of the unordered flow of objects takes place on a conveyor down to a fixed dropping area above the rotating ring of receiver containers. Thus, already by their passage of this area, the containers themselves will constitute the means required for separating the flow to the different containers, and vis-a-vis th
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Grundtvig Henrik
Nielsen Ulrich Carlin
Poulsen S.o slashed.ren
Skovsg.ang.rd Jesper
Moon Daniel
Scanvagt A/S
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