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Case erector and bottom sealer apparatus

  • US 4,498,893 A
  • Filed: 01/28/1982
  • Issued: 02/12/1985
  • Est. Priority Date: 01/28/1982
  • Status: Expired due to Fees
First Claim
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1. For erecting and folding a flat folded case blank having minor first and second flaps, which are respectively joined along fold lines to the to transverse ends of first and second minor side walls of a case blank, and major third and fourth flaps, which are respectively joined along fold lines to one transverse ends of major third and fourth sidewalls, each of said flaps having a longitudinally extending terminal edge substantially parallel to the respective fold line and substantially spaced therefrom and the minor sidewalls being joined to opposed edges of the major sidewalls, case erector and bottom sealer apparatus comprising a longitudinally elongated frame having a rear end portion and a front end portion, first means at the frame rear end portion for supporting a stack of the flat folded blanks in vertical stacked relationship with each blank having its first and third flaps and sidewalls above its second and fourth flaps and sidewalls second means on the frame for picking up a flat folded case blank from the stack of case blanks on the first means and feeding the picked up blank forwardly to a case blank erecting station on the frame, third means mounted on the frame for supporting a case blank at the erecting station, fourth means mounted on the frame for releasably grippingly engaging at least one of the fourth flap and fourth sidewall of a case blank at the erector station, operable fifth means mounted on the frame for releasably grippingly engaging at least one of the third flap and third sidewall of a case blank grippingly engaged by the fourth means and erecting the gripped case blank, operable sixth means mounted on the frame for movement between a retracted and a flap folded position for folding the second flap of the erected case blank to extend generally toward the first sidewall, operable seventh means mounted on the frame for movement between a retracted and a flap folded position for folding the first flap of the erected case blank to extend generally toward the second sidewall, operable eighth means mounted on the frame for movement between a retracted position and a flap folded position for at least partially folding the third and fourth flaps to hold the first and second flaps in their folded condition, ninth means for applying adhesive to at least some of the flaps on areas of the flaps to adhere the third and fourth flaps to the first and second flaps when the first and second flaps are pressed against the third and fourth flaps, operable tenth means mounted on the frame for moving the erected case blank from the erecting station, past the ninth means and to a compression station at the frame front end portion, eleventh means on the frame for supporting an erected case blank as it is moved from the erecting station to the frame front end portion, operable twelfth means on the frame at the frame front end portion to compress the flaps to form a sealed case closure and control means for operating the second and fourth means and controlling the operation of the fifth, sixth, seventh, eighth, tenth and twelfth operable means, the second means including means for supportingly conveying at least one of the fourth flap and the fourth sidewall, and the eighth means including lower flap folder means for moving from a retracted position to a flap folded position for folding the fourth flap and means joined to the lower folder means for movement therewith for stopping forward movement of a case blank on the supportingly conveying means when the lower folder means is in its folded position.

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