FIELD: textile, paper.
SUBSTANCE: bending machine device for a cardboard, designed to form the structural drawings from the big lines in the material, containing the cardboard sheet, fed to the machine, where the material containing the cardboard sheet is then cut into blanks, each of which contains the structural drawing from the big lines, at that the mentioned device contains the system, including at least two shafts, where the first shaft is provided with the punching bending tool, having at least two enveloping surfaces, each of which has the structural drawing from lines, at least one of which has the open end. The mentioned enveloping surfaces are located parallel to the first shaft axis of rotation. The second shaft is provided with the matrix bending tool, having at least two enveloping surfaces, each of which has the structural drawing from lines, corresponding to the structural drawing of the first shaft, at that the mentioned enveloping surfaces are arranged parallel to the first shaft axis of rotation. At that the mentioned shafts are arranged in such a way, that the punch and matrix bending tools cooperate with each other to provide the drawings from the big lines in the material, containing the cardboard sheet, fed into the machine, when using the machine. According to the invention the mentioned punch and matrix bending tools are provided with the structural drawing in such a way, that the open end is provided with at least one big line limiter, at that at least the vector component of the mentioned at least one big line limiter, extends perpendicular to the open line on which it is provided.
EFFECT: improvement of the resulting product properties.
20 cl, 9 dwg
