Package making – Apparatus for forming or partially forming receptacle and... – Forming by opening or setting up collapsed receptacle
Patent
1989-07-18
1991-07-23
Coan, James F.
Package making
Apparatus for forming or partially forming receptacle and...
Forming by opening or setting up collapsed receptacle
53 481, 53207, B65B 1110
Patent
active
050332554
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a carton packaging machine which is operable to cause progressive erection of carton-forming blanks, to permit loading of the partly erected blanks with product, to complete the formation of each carton and to close the latter with the product located therein, and to discharge each closed carton from the machine.
The invention is particularly concerned with a machine for use in forming carton sleeves, such machines being known as "sleeving machines". In machines of this type, a stack of blanks is supplied to the machine, and the blanks are fed singly to the machine and then undergo progressive erection, loading with product, final formation into sleeve form, and then discharge of the sleeved product.
Existing designs of sleeving machine wrap the blank around the product by drawing the blank downwardly onto the top of the product and by folding sides of the blank downwardly so as to lie alongside the product, and then by folding the lower margins of the side of the blank under the product, followed by sealed closure. This manipulation of the blank is somewhat complicated, and it is a particularly difficult part of the operation to ensure that the blank is folded under the product and then secured by adhesive in a satisfactory manner.
In the known machine, the wrapping of the blank around the product is done entirely by the machine, and any incorrect initial positioning of the product, or improper presentation of the blank to the product, cannot be corrected manually by an operator, and the machine is therefore liable to form sleeved packaging which is not always satisfactory, and particularly does not hold the product securely, if the bottom closing and sealing operation has not been completed satisfactorily.
There are standard tests for packaging, one of which requires that the packaging should not be damaged, and neither should the product become loose or dislodged, following dropping of the packaging from a standard height onto a hard surface. Existing designs of sleeving machine do not always achieve a satisfactory and repeatable operating performance in the formation of sleeve cartons, such as to meet the standard tests.
The invention therefore seeks to provide a carton packaging machine which handles the blanks in a different way, such that more readily repeatable sleeve closure of the blank around a product can be achieved.
According to the invention there is provided a carton-packaging machine which is operable to cause progressive erection of carton sleeves from a supply of blanks, to permit loading of partly erected blanks with product, to complete the formation of a sleeve around each product and to close the latter with the product located therein, and to discharge the loaded sleeve from the machine, in which the machine comprises:
an endless conveyor movable progressively through a blank-supply station, an erection station, a product-loading station, a folding station, and a discharge station;
a magazine arranged at the blank-supply station for holding a stack of blanks;
a suction device arranged to co-operate with the magazine and to operate in timed sequence with the operation of the conveyor in order to engage and to draw blanks individually in turn, in flat form, into the path of travel of the conveyor for engagement thereby;
a shaping device arranged at the erection station and engageable by each blank in order to form the blank into a U-shape having a base and a pair of side flaps extending upwardly from the base, each U-shaped blank being then advanced by the conveyor to the loading station at which product can be loaded onto the base; and
a folding device arranged at the folding station above the conveyor and engageable with the upper portion of the side flaps, as each loaded blank is advanced to the folding station, so as to fold the side flaps inwardly into overlapping relation in order to complete the formation of the carton sleeve.
The packaging machine according to the invention operates to form carton sleeves in a novel manner, in that the product can be
REFERENCES:
patent: 2812939 (1957-11-01), Harred
patent: 2953070 (1960-09-01), Dunning
patent: 2998685 (1961-09-01), Ganz
patent: 3016668 (1962-01-01), Sell
patent: 3234706 (1966-02-01), Arneson
Bonar Cooke Cartons Limited
Coan James F.
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