The utility model belongs to the technical field of
carton forming, and particularly relates to a
carton enclosure frame demolding device which comprises a supporting seat, a linear mechanism, a bearing mechanism, an overturning seat, an overturning driving piece and a lifting mechanism. The linear mechanism is arranged on the top side of the supporting base, two side plates are arranged at the moving end of the linear mechanism, and the lower ends of the side plates extend inwards to form abutting plates. The bearing mechanism is arranged on one side of the supporting base and provided with a bearing die, the bearing die is provided with a die cavity, a translation mechanism is arranged above the bearing die, a
hook plate is arranged at the moving end of the translation mechanism, the bottom end of the
hook plate extends to form a hook part, and an
extrusion gap is formed between the hook part and the top side of the die cavity. The overturning seat is rotationally connected into the supporting seat and is positioned at the bottom end of the bearing mold; a receiving groove is formed in the overturning seat; the turnover driving piece is connected with the turnover seat; the lifting mechanism is connected with the bearing die or the overturning base. Under
extrusion and pushing of the hook part, the surface paper of the protruding part on the top side of the
enclosure frame is reversely folded and attached to the inner side of the
enclosure frame. Therefore, when the enclosure frame is demolded, reverse folding and attaching of the surface paper are completed.