Package making – Group forming of contents unit and subsequent or further... – Layer – stack – or column
Patent
1996-02-08
1997-02-25
Moon, Daniel
Package making
Group forming of contents unit and subsequent or further...
Layer, stack, or column
53244, 53247, 53538, 294 65, 414416, B65B 508
Patent
active
056050313
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a device for packing filled bags in cases, comprising: other, which suction box can be moved between a pick-up position above the above mentioned means for forming a row and a delivery position above a case or device for feeding in a case, and suction box,
Such a device is known from GB-B-2158029.
The suction box of this device is suitable for picking up, moving horizontally and delivering a single row of overlapping bags. In order to deposit two rows of bags in a case, the suction box has to move back and forth twice between the pick-up and the delivery position, which means a relatively long cycle time. The bags are normally deposited in a case in such a way that the rows overlap each other at right angles to the lengthwise direction of the rows. This therefore means that the bags of a row overlap each other in two directions at right angles to each other. It has been found that there is a risk here that the bags of each layer will go into an upward slanting position at right angles to the lengthwise direction of the rows and that the various layers stacked on top of each other will not lie flat on top of each other.
The object of the invention is to make a change in the design of the known device which leads to a shorter cycle time and to layers of bags being deposited lying flat on top of each other in a case.
For this purpose, the suction box according to the invention is provided with first and second rows of suction cups parallel with respect to the feed direction of the bags, the mouths of the first row or rows on the one hand being distanced in the vertical direction from the mouths of the second row or rows of suction cups by a vertical height being substantially equal to or larger than the thickness of a filled bag, and on the other being distanced in the horizontal direction by a length smaller than the width of a filled bag as seen perpendicular to a row of collected bags, that the suction box is connected to a part which is movable between a first pick-up position and a second pick-up position, the distance between the first and second pick-up positions substantially corresponding to the horizontal distance between the first and second rows of suction cups so as to provide a densely packed layer of bags which overlap each other in two directions perpendicular to each other.
The distance between the first and second pick-up position should be slightly smaller than the width of a bag, so that successive rows of bags hanging from the suction box overlap each other.
Two rows of bags, for example, are always deposited overlapping each other in the crosswise direction in a case, and it has been found that, although those bags overlap each other in a case in two directions at right angles to each other, the layers still lie flat on top of each other. The invention therefore leads to a gain in time and a gain in space in the outers.
It is not out of the question for more than two rows of suction cups to be connected at different levels to the suction box.
The invention will now be explained in greater detail with reference to the figures.
FIG. 1 shows a side view of the device according to the invention during the formation of a row of filled bags.
FIG. 2 shows a side view after a first row of bags has been pushed against a row of suction cups situated high up.
FIG. 3 shows a side view after a second row of bags has been pushed against a row of suction cups situated low down.
FIG. 4 shows a side view after two layers, each formed from two rows of bags, have been deposited in an outer.
FIG. 5 shows a section along the line V--V in FIG. 2.
FIG. 6 shows a section along the line VI--VI in FIG. 3.
FIG. 7a shows a bottom view of the suction box used in the case of the device according to FIGS. 1 to 6.
FIG. 7b shows a bottom view of an alternative embodiment of a suction box intended for slightly smaller bags.
The device shown comprises a feed conveyor 1 for feeding in filled bags 2, for example bags filled with crisps, to a number (four) of adjacent conveyor belts 3, on which a row
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patent: 4800703 (1989-01-01), Goodman
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patent: 5079903 (1992-01-01), Hakansson
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