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Machine for forming cardboard boxes from blanks folded flat

  • US 4,857,038 A
  • Filed: 09/15/1987
  • Issued: 08/15/1989
  • Est. Priority Date: 09/15/1986
  • Status: Expired due to Fees
First Claim
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1. A carton erecting machine comprising:

  • a support frame;

    a magazine for containing a vertical stack of flattened carton blanks;

    means for picking up the lowest blank of the stack and putting it vertical in a pre-opening position;

    carton opening means including first and second grasping means relatively movable from a carton grasping position, in which said first and second grasping means are arranged in parallel vertical planes and engageable with opposite portions of the blank in the pre-opening position which correspond to a first pair of opposite walls of the desired erected carton, to a carton opening position in which said first and second grasping means are arranged in parallel spaced vertical planes to keep the carton in open position;

    means for closing a first pair of lower carton flaps depending from a second pair of opposite walls of the erected carton during movement of said grasping means to said carton opening position;

    means for closing a second pair of lower carton flaps depending from said first pair of opposite side walls of the erected carton after the end of movement of said grasping means; and

    carton ejecting means for finally moving the erected carton perpendicularly to said second pair of side walls to a carton delivering position.

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