Apparatus for forming flaps on a carton

Apparatus for forming flaps at the top of an open-top carton after it has been packed, comprising means for internally scoring the walls of the carton generally at the level of the top of the contents of the carton, said scoring means comprising a set of scoring blades, one for each wall of the carton, said blades being arranged to fit in the carton with each blade extending generally horizontally along the inside of a respective wall of the carton, and a set of presser members, one for each blade, surrounding the blades, means for effecting relative movement of the presser members and blades for scoring the walls of a carton disposed between the blades and the presser members by compressing the walls between the blade edges and the presser members, and means for effecting relative movement of the carton and said scoring means to position the blades inside the carton on top of the contents of the carton with the blades projecting outwardly beyond the contents and with the walls of the carton between the blades and the presser members, the latter and the blades then being relatively movable for compression of the walls between the blade edges and the presser members to score the walls on the inside thereof generally at said level, each presser member being mounted for movement from a retracted position spaced outwardly from its respective blade in inward direction toward said blade for scoring the wall disposed between said blade and said presser member, each blade being mounted for rocking movement between a position for entry in the carton inclined upwardly and outwardly and a generally horizontal scoring position on top of the contents of the carton.

Apparatus for forming flaps at the top of an open-top carton after it has been packed comprising

• a frame,
• a carton elevator movable up and down in the frame,
• a compression head extending down from the top of the frame above the elevator,
• a set of scoring blades, one for each wall of the carton, mounted at the bottom of said head, said blades being arranged to fit in the carton with each blade extending generally horizontally along the inside of a respective wall of the carton,
• a set of presser members, one for each blade, carried by the frame surrounding the blades,
• means mounting each of said presser members on the frame for movement from a retracted position spaced outwardly from its respective blade in inward direction toward said blade for effecting scoring of the wall of a carton disposed between the blade and the presser member by pressing the wall against the blade edge,
• said elevator being adapted to raise a carton to compress the contents of the carton against the bottom of the head and the blades with the walls of the carton disposed between the blades and the presser members, the blades projecting outwardly beyond the contents, the presser members then being movable inwardly to press the walls against the blade edges, the compression head having a platen at its lower end, and the blades being pivotally mounted at the edges of the platen for rocking movement between a position for entry in the carton inclined upwardly and outwardly and a horizontal scoring position on the bottom of the platen.

Apparatus for forming flaps at the top of an open-top carton after it has been packed comprising

• a frame,
• a carton elevator movable up and down in the frame,
• a compression head extending down from the top of the frame above the elevator,
• a set of scoring blades, one for each wall of the carton, mounted at the bottom of said head, each blade having an outer edge constituting a scoring edge, said blades being arranged to fit in the carton with each blade extending generally horizontally along the inside of a respective wall of the carton and with the blades lying flat on top of the contents of the carton in a plane generally at the level of the top of the contents and projecting laterally outwardly beyond the top of the contents so that their scoring edges are laterally outward of the top of the contents,
• a set of presser members, one for each blade, carried by the frame surrounding the blades,
• means mounting each of said presser members on the frame for movement from a retracted position spaced outwardly from its respective blade in inward direction toward said blade for effecting scoring of the wall of a carton disposed between the blade and the presser member by pressing the wall against the scoring edge of the blade,
• said elevator being adapted to raise a carton to compress the contents of the carton against the bottom of the head and the blades with the walls of the carton disposed between the blades and the presser members, the blades lying flat on top of the contents in said plane with their scoring edges laterally outward of the top of the contents, the presser members then being movably inwardly to press the walls against said scoring edges of the blades.