Load or unload sheets from a pallet onto a CNC Punching Machine
The SHEET TRANSFER 3015 is designed for the loading of sheets from a pallet onto the CNC Punching Machine, and the unloading of the punched sheet from the machine table onto a stacking unit. The main frame of the system is a rigid, bolted structure with over-dimensioned linear guides and motorised wagons. It consists of a:
Loading device with sheet seperation unit and thickness measuring unit:
The pallet with the sheets is put on an over-dimensioned frame structure with 2 magnets for the pre-separation of steel plates and 3 stop bars to gauge the material. The loading unit consists of a frame carrying the pneumatic suction cups and a special pneumatic system (front left corner) for separation of the sheets. This special pneumatic system shakes the front left corner of the sheet to separate the sheet from the one underneath, with extra help from a jet of compressed air through an air blowing device (adjustable in height).
The vertical movement of the suction cup frame has 2 speeds for better separation of the sheets. Once the sheet is lifted, a special device measures the thickness of the sheet to check whether only 1 sheet has been taken. If this is the case, a special intermediate table comes in between the lifted sheet and the sheet pallet, at the same height of the table of the punching machine.
At this point, the system waits for the punching machine to finish punching the previous sheet. When the previous sheet is finished, the new sheet is moved horizontally to the machine and is held at about 25 mm above the punched sheet on the punch table.
Unloading device with automatic stacker table:
At the same time, the intermediate table moves back above the stacking unit. As this intermediate table moves forward in the next loading cycle, a special device (comb system) will strip off the sheet from the table onto the stacking unit.
Both the loading and unloading cycles are PLC controlled. There is also an operator control panel for thickness entering and for system diagnostics, as well as a push-button board for manual operation of the system.
The SHEET TRANSFER 3015 is fully built according to CE regulations and is covered on 3 sides by wire net panels. The front side is protected by the optical safety system of the machine.