| 摘要 |
PURPOSE:To provide a proper cut-off length and improve the accuracy of cut-off in a cut-off controller for a corrugated fiberboard cutting apparatus or the like by detecting a position of a cutter engaging a material with a cut completion detector. CONSTITUTION:A material 1 like corrugated fiberboard is cut off into a predetermined length by a rotating cylinder 2 with a shear edge 3. A material moving line is provided with a material position measuring wheel 4 to which is connected a pulse oscillator 5 so that pulses are generated to a material position counter 11 and a controller 8 detects the material position from this counter 11. The position of the shear edge 3 is determined by pulses generated from the pulse oscillator 5 connected to a motor 6 according to the rotational frequency of the cylinder 2 and counted by a shear edge position counter 12. The completion point of cut-off is detected by a cut-off completion detector 9 and then the material position counter 11 and shear edge position counter 12 are reset to zero by reset pulses generated from the cut-off completion detector 9. |
