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Various configurations of boxes of a corrugated or fiberboard material are manufactured by a machine and process in which scored marginal flaps of the preformed box blank material are laterally wrapped around forming mandrels or fingers to define corner and/or intermediate posts integral with a wall

Various configurations of boxes of a corrugated or fiberboard material are manufactured by a machine and process in which scored marginal flaps of the preformed box blank material are laterally wrapped around forming mandrels or fingers to define corner and/or intermediate posts integral with a wall portion of the resulting box, with at least a portion of each flap laminated to the side wall.

대표청구항 ▼

In a machine for forming a post-reinforced end wall for a paperboard container out of portions of a preformed flat blank of the paperboard material having a pair of first scorelines defining a junction between an end wall area of the blank and an opposite pair of marginal flaps, each flap having a p

In a machine for forming a post-reinforced end wall for a paperboard container out of portions of a preformed flat blank of the paperboard material having a pair of first scorelines defining a junction between an end wall area of the blank and an opposite pair of marginal flaps, each flap having a plurality of portions defined by a plurality of scorelines parallel to the first scoreline, the combination comprising: a frame; a hopper means mounted at one end of said frame for supporting a stack of the flat blanks; a feed means comprising an elongate member oriented parallel to a longitudinal axis of said frame substantially midway between opposite sides of said frame, said member being mounted on said frame adjacent to said hopper for reciprocation longitudinally of said frame between retracted and extended positions of said member; said feed means further comprising an outer blade mounted on an upstream end of said elongate member and unidirectionally engageable with a central portion of the end wall area of a blank when said member is in said retracted position for feeding one of the blanks at a time away from said hopper means and into a flap folding station of said machine downstream from said hopper means; a pair of mandrel means each positioned in parallel relation to and along one side of said frame at said flap folding station of said machine, each of said mandrel means defining the post configuration into which portions of the flap are to be formed; a pair of support shoe means mounted on opposite sides of said frame in parallel confronting relationship to said pair of mandrel means with sufficient space therebetween to slidably admit the end wall area of a blank therebetween to serve as a friction brake means for resisting downstream movement of the blank by said outer blade of said elongate member; a pair flap folding means mounted on opposite sides of said frame at said station in operative opposition to corresponding ones of said shoe means and said mandrel means for folding the plurality of portions of one of the flaps of the blank into a post configuration about one of said mandrel means while the blank is frictionally held in an indexed stationary position between said mandrel means and said support shoe means; and an inner blade mounted on a downstream end of said elongate member and unidirectionally engageable with a central portion of the end wall area of a blank when said member is in said retracted position for transporting a blank downstream away from said mandrel means after the flaps of that blank have been folded into a post configuration.