Package making – With contents treating – Reshaping
Patent
1996-06-27
1999-04-20
Coan, James F.
Package making
With contents treating
Reshaping
53502, B65B 0122
Patent
active
058947124
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a rearrangement device for a container containing loose articles and/or products, in particular in bulk form, comprising a bearing framework in which a set of movement means is provided, for subjecting the container interacting with said bearing framework to a movement.
PRIOR ART
In the case of known devices of this type means are provided for subjecting the container to a shaking movement, said means comprising reciprocating elements such as cylinders, in particular compressed air cylinders.
However, these elements have the disadvantage that they themselves are rigid and are thus a fixed height. During handling of the containers, namely loading onto and unloading from the rearrangement device, the container consequently has to be raised to a suitable height or lowered therefrom beforehand in each case. This requires equipment suitable for the purpose, such as a fork-lift truck.
Another disadvantage is that the cylinder elements are moved only in their lengthwise direction. The container can therefore only be shaken in this direction.
Yet another disadvantage is that such cylinders carry out a rather clumsy movement, in the case of which account must be taken of the inertia effect of the cylinder mass and also of the internal friction of the cylinders.
SUMMARY OF THE INVENTION
The object of the invention is to eliminate the abovementioned disadvantages. To this end, in the case of the device according to the invention it is characteristic that the abovementioned movement means consist of toss-up means formed by bellows which are controllable in a predetermined way, which is such that the container to be placed on a frame of the device with which the bellows interact is subjected alternately at opposite sides thereof to a toss-up movement, for the rearrangement of the products in said container.
This considerably simplifies the design of the device, since the bellows need not be moved as a whole, but it is the bellows themselves which undergo a shape change under a suitable control, in particular an expansion followed by a contraction. Subsequent shape changes of predetermined bellows according to a controlled sequence cause the toss-up movement of the container. Moreover, this alternating expansion and contraction of the bellows does not occur only in one particular direction, but in a direction which can vary slightly. This is due to the flexible structure of the bellows. An extremely smooth operation of the device is obtained in this way. Due to this variation being possible in the direction of the toss-up movement produced by the bellows, a better distribution of the bulk material placed in the container is obtained.
Another advantage of the bellows in this device is the extremely low height of the bellows in the contracted idle position. This makes it possible to dispense with expensive handling equipment such as fork-lift trucks for loading the containers onto and/or unloading them from the device.
Even manual handling of the containers relative to the device is a possibility in these circumstances. Besides, from the point of view of safety, this makes it possible to work in less dangerous conditions. This actually means that the fork-lift truck can be removed from the production process. There is also considerably less risk of damage to the device and/or container and/or bulk contents of the container.
A further important advantage is the extremely low inertia of the abovementioned bellows. This produces much greater acceleration in the bulk material placed in the container, and better filling of the so-called empty spaces in the bulk material is obtained.
Further features and characteristics of the invention are defined in the sub-claims.
Further advantages and details will emerge from the description below of an exemplary embodiment of a device according to the invention with reference to the appended drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a general perspective view of the device according to the invention in the idle po
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Coan James F.
Kim Gene L.
Resilux
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