Package making – With means responsive to a sensed condition – Of individual contents or group feed or delivery
Patent
1988-11-18
1990-09-04
Culver, Horace M.
Package making
With means responsive to a sensed condition
Of individual contents or group feed or delivery
53501, 53544, 198399, 198453, B65B 3544, B65B 3556, B65B 5720, B65B 6508
Patent
active
049533436
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a machine for packaging flat, non-rotation-symmetrical objects in bags or cardboard boxes, it being of importance that an exact preselected number of objects is released or fed into every package.
By flat, non-rotation-symmetrical objects is meant in this connection every object which has two substantially parallel sides and the intermediate sides of which have a non-circular periphery, e.g. an oval or elliptical periphery, or, especially, a triangular or polygonal periphery. The invention has been brought about especially in connection with problems of packaging tablets which have two parallel sides and an irregular triangular periphery, and in the subsequent figures the invention is illustrated with reference to such tablets. It is however apparent that this is only an example and that flat objects of many other non-rotation-symmetrical shapes give rise to the same problems capable of being solved by the same invention.
The said problems are, in the main, of two different types, all primarily due to the flat and non-rotation-symmetrical shape of the objects, i.e. or several on top of one another or rise, two by two, on their edges. the number of objects fed down into every packaging unit, if the objects are on their edges or lying, two or several, on top of one another.
No known arrangements have solved the problems outlined above in a satisfactory manner.
The invention will now be described in greater detail with reference to the attached drawings, which show different parts of a complete filling unit.
In the drawings FIG. 1 shows the feeder of a filling unit in accordance with the invention seen in perspective from one direction.
FIG. 2 shows the same arrangement seen along arrow II in FIG. 1.
FIG. 3 shows in greater detail the initial part of the feeder as seen along arrow III in FIG. 1.
FIG. 4 shows in corresponding manner the same detail along arrow IV in FIG. 3.
FIG. 5 shows a detail of the output end of the feeder.
FIG. 6 shows a detail of the feeder seen from the further end of the machine.
FIG. 7 finally shows a symptomatic cross-section through the output end of the machine with the apparatus for feeding an exact preselected number of objects into a package.
The feeder shown in FIG. 1 consists in general of a schematically drawn magazine 1 for tablets 2, a rear transport trough or input channel 3, on which the tablets 2 are discharged from the magazine, a transfer unit 4, on which the tablets slip down from the input channel and are taken further to a front transport trough 5 on which a row of tablets is vibrated or in another way moved forward to a counting and discharge unit 6 which counts and releases a preselected number of tablets into a package 7.
As shown most clearly in FIGS. 3 and 4, the rear transport trough or input channel 3 is curved and has a bottom track 8 sloping downwards towards the transfer unit 4 and has its bottom 8 arranged at a height above the transfer unit which is somewhat larger, e.g. 1.5 times as large as the distance between the two parallel sides of tablet 2, since in this case the machine is assumed to handle the tablets as they lie on one of the parallel sides. Bottom track 8 on input channel 3 forms, on the other hand, a stripper for such tablets, e.g. tablet 9 in FIG. 4, which happens to be located on top of another tablet 10. Only one layer of tablets can therefore pass from transfer unit 4 towards the front transport trough 5.
Transfer unit 4 slopes downward towards the front transport trough 5, e.g. at an angle of about 18.degree., and it is shown arranged in such a manner as to guide the tablets in a direction opposite to that on input channel 3 and, accordingly, also slopes in the direction opposite to that of bottom track 8 of the input channel. The tablets have a tendency to slide down towards the more remote edge of unit 4 and at that end of the transfer unit there is therefore a spring plate 11 fixed at one end, the purpose of which is to act in the manner of a spring on tablets and while separating them guides them towards th
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Akerlund & Rausing Licens Aktiebolag
Culver Horace M.
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