ES446969A1 - Machine to conform by folding containers for pastels of flexible laminar material. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Machine for folding containers for cake made of flexible sheet material, characterized in that it comprises a folding die that defines an open upper and lower enclosure, which is constituted by two walls facing two by two, the walls of one of said pairs being constituted by a flat wall that superiorly and at both ends is provided with two lower and internally arched recesses of suitable width, defining respective funnel-shaped openings flattened at the corners of the enclosure, the walls of the other pair comprising a thin T-shaped plate with the recesses inferiorly, fixed by the upper part and that is slightly separated and flush with the recesses of the adjoining walls, a second thicker plate located outside and slightly separated from the previous one and which is aligned with the said recesses, which superiorly is provided with an angular recess and in which the inclined planes are they are slightly smaller than the said recesses and whose bottom is above the lower end of the t-plate, and finally, and inferiorly, said walls have a lateral recess; in combination with an actuating mechanism constituted by a ram and a seat plate connected by elastic means, which move in an alternative way by the die, the ram being actuated by opportune means of pressurized fluid so that in the descent movement the the ram pushes directly to the plate and in the movement of ascent the elastic means force the plate to follow the rammer, stopping at the plate when it reaches the plane of the mouth of the matrix and continuing the ram a certain distance, the piston rod being provided with both sides, in correspondence with said notches, of two levers articulated so that they can oscillate separating at their lower end from the stem, provided with elastic means that keep them applied against the stem, provided with elastic means and terminated inferiorly in respective nails, with which in the operation, when arranging a sheet of material to conform properly dimension when the top plate is lowered over the mouth of the die, the blade is trapped between the rammer and the seat plate, descending with them, the sidewalls of the container forming first and the triangular portions protruding through the openings of the corners. In the descent they slide over the mentioned recesses; then the inclined planes of the second plate bend said portions against the rear face of the t-plate, said portions passing between the two said plates, whereby, the portions of the corners are bent against the same side wall of the container in vertical position; when the rammer reaches the height of the aforementioned recesses, the shank piston levers begin to separate from it, overcoming the action of the elastic means, whose lower nails bend towards the horizontal the corresponding side walls that protrude from the rammer and the triangular portions. Folded with them that define respective tabs constituting handholds of the container, said folding finishing when the tamper arrives at the end of its travel in which it is flush with the bottom of the aforementioned recesses; in this way, in the movement of ascent to complete the cycle, the conformal folds of the container are strongly emphasized, stopping the plate when arriving at the mouth of the matrix and continuing its ascent the tamper a small section, to allow the withdrawal of the container already constituted. (Machine-translation by Google Translate, not legally binding)