DEVICE FOR RUPTURING ATTACHMENT ZONES ON FOLDING BOXES AND PRODUCTION UNIT COMPRISING SUCH A RUPTURE DEVICE

The invention relates to a rupture device (1) comprising: an upper pressure member (2); a support part (4) for supporting the stack, said support part including multiple conveyor members (10) for conveying the stack in a conveying direction (X); and a lower pressure member (6) arranged below the conveyor members (10). The conveyor members (10) are adjacent to one another in a transverse direction(Y). Two adjacent conveyor members (10) can be moved apart from one another. The lower pressure member (6) comprises: i) two lower adjacent plates (6.1, 6.2) which can be moved apart from one another,and ii) a lower linear-movement actuator (6.3) for moving the lower plates (6.1, 6.2) so as to align the rupture slit (2.0) with a rupture line. 本发明的切断装置（1）包括：上压力构件（2）；支撑部件（4），其包括在输送方向（X）输送纸板堆的多个输送构件（10）；以及被配置在所述输送构件（10）下的下压力构件（6）。多个输送构件（10）在所述横向方向（Y）并列。两个并列的输送构件（10）可被分开。下压力构件（6）包括：i)可彼此移离的两块相邻的下板（6.1,6.2），及ii)下平移致动器（6.3），其用于移动所述下板（6.1,6.2）以使切断槽（2.0）与易断线重合。