| 摘要 |
The specification describes an apparatus for stacking and unstacking sheet material, more particularly glass sheets, comprising one or more suction plates, capable of moving towards a sheet material stack and adapted to be moved by a pressure cylinder actuator, and with a sensing member, which on making contact with the stack, whose height changes on the stacking or unstacking of a sheet generates a pulse adapted to control the piston rod of the pressure cylinder actuator. As a sensing member a switch (vacuum monitor, pressure monitor) responding to changes in pressure is provided in the suction duct system of the suction plates and/or in the pressure duct system of the pressure cylinder actuator. |
