Package making – Depositing articles and arranging material in preformed... – With movement of receptacle to or from filling station
Patent
1994-08-18
1996-06-11
Bray, W. Donald
Package making
Depositing articles and arranging material in preformed...
With movement of receptacle to or from filling station
53567, 414416, 4147969, B65B 4328
Patent
active
055244165
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a tube picker for picking unfilled tubes having an open bottom from a container such as a cardboard box or the like to be placed on a band which is intended to transport the picked tubes to a filling station for these.
PRIOR ART
Within the packing industry machines for handling, filling and sealing of usual squeezing tubes have got a high degree of mechanising. Empty tubes having an open bottom are supplied in boxes to a tube filling machine at which these empty tubes automatically are picked up and placed on a moving line to the filling machine. Immediately before the filling machine the empty tubes are sucked clean from possible impurities.
A plurality of devices for picking empty tubes from boxes are known. A prior system is based on that one uses picking fingers which are provided with friction organs which are introduced into and act against the inner side of the empty tube. Different variants of these friction organs are known, but common for them is that rubber details are used which are subjected to wearing and aging so that they have to be replaced from time to time. Via the fact that these picking fingers require relatively exact guidance in relation to the empty tubes for having the picking fingers to hit the accurate positioning of every empty tube is required.
A more recent device for picking tubes from boxes is described in the Swedish patent 8504451-9. This system is based on using picking fingers which are hollow and at one end provided with a suction orifice. The picking fingers are connected to a fan which sucks air from them so that when the picking fingers are inserted into the tubes they will be sucked on the picking fingers. The tubes are thereafter lifted from the box and forwarded to for example a running conveyor where they are laid down either by having the tubes pushed off by means of an abutment or by taking away the subatmospheric pressure.
A further example of a tube picking arrangement is described in the British patent 2.203.404. The device according to this patent does also use picking fingers, but these are movable to the sides and they pick up the tubes by clamping the tubes against each other after the fingers have been introduced in the tubes and in this way pinch the tubes. The fingers in this device act in pairs and they are connected to each other by means of a spring which pulls them against each other. This also requires an arrangement which moves the fingers apart before the insertion in the tubes. The arrangement is hereby complicated and costly in manufacturing.
THE TECHNICAL PROBLEM
The problem connected with the above mentioned devices and other similar devices are that they partly are worn down and have to be adjusted (this applies especially to the rubber details) partly are complicated by requiring a subatmospheric pressure which must be maintained or having arrangements for moving apart and moving together the fingers have to be present.
THE INVENTION
According to the present invention one has solved the problems connected with the above mentioned arrangements and brought about a tube picker for picking of unfilled tubes having an open bottom from a container and putting these on a conveyor band or the like comprising rigidly fixed fingers on a movable support intended to be inserted in the unfilled tubes through their open bottoms, which tube picker is characterized in movably mounted pins on the support in the vicinity of the rigidly fixed fingers which are intended to be put on the fingers after the fingers have been inserted into the tubes and therethrough clamp the tubes.
It is according to the invention suitable that the pins are mounted above and between the fingers.
It is further according to the invention advantageous that every pin is intended to be put on two fingers whereby only half the number of pins in relation to the number of fingers have to be arranged.
It is further according to the invention suitable that the movably mounted pins are mounted on a turnable shaft, whereby they thr
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patent: 2119725 (1938-06-01), Stecher
patent: 2631746 (1953-03-01), Holstebro et al.
patent: 2681161 (1954-06-01), Lorenz et al.
patent: 2741381 (1956-04-01), Bezien
patent: 3747786 (1973-07-01), Reichert
patent: 4262795 (1981-04-01), Hecker
patent: 4901504 (1990-02-01), Tsuji et al.
patent: 4946340 (1990-08-01), Murphy et al.
patent: 5328319 (1994-07-01), Fadaie
Patent Abstracts of Japan, vol. 9, No. 213, M-408, Abstract of JP, A, 60-71422 (Sasaki Glass K.K.), 23 Apr. 1985.
Bray W. Donald
Moon Daniel
Norden Pac Development AB
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