CELL FOR LAMINATED PLATES MACHINING
1.0 PURPOSE OF SUPPLY
Making a system that guarantees the automatic loading of laminated plates on 2 operating machines arranged in parallel; the plates will be taken from a warehouse and loaded on the machining table by a Cartesian portal robot while a second robot picks up the plates coming from a roller conveyor and loads them in the warehouse
The units that make up the system, duly interfaced with each other, will constitute an automatic working island able to operate in an unattended cycle.
3.0 SUPPLY COMPOSITION
- n. 1 double tower warehouse with central elevator
- n. 1 2-axis controlled portal robots for warehouse loading
- n. 1 shuttle for warehouse loading
- n. 1 2-axis controlled portal robots for machine loading
- n. 1 shuttle for the machine loading robot
- n. 2 magnetic gripping systems
- n. 1 SIEMENS control cabinet with Ethernet card
- n. 1 system of fences
4.0 PROJECT DESCRIPTION
The laminated plates coming from a roller conveyor are loaded by a 2-axis Cartesian robot in a drawer in the shuttle for warehouse loading; the grip of the plates is magnetic.
The pallet will be provided with pegs that can be positioned manually so as to allow the composition of stacks of plates; the number of possible stacks on each pallet will be determined by the width of the plate and the size that will require the gripper of the robot. The stored plates have commercial thicknesses and lengths; it was also offered the possibility of storing semi-finished plates with variable lengths.
Once the pallet load has been composed, the operator will activate the drawer changing procedure for the new loading; automatically the shuttle will go under the tower, the elevator will unload the drawer by depositing it in the tower, pick up the new empty drawer, deposit it on the shuttle and the shuttle will return to the loading position available to the operator.
On the opposite side of the warehouse, a robot shuttle will come out from under the tower with the drawer carrying the type of laminated plate required by the operating machine; the robot will pick up the single plate with the activation of magnets placed on the gripper and deposit it on the table of the operating machine.
A SIEMENS command and control unit will manage the warehouse, shuttle and robot operations.
The system, appropriately interfaced with the operating machines, allows the operations to be carried out automatically.
Z axis elevator speed 10 mt/min
X axis robot speed 60 mt/min
Z axis robot speed 10 mt/min
Robot positioning accuracy ± 0.5 mm
Positioning repeatability 0.05 mm
Warehouse cycle time max 120 sec.
the cycle time includes the unloading of the drawer from the shuttle, the deposit of the drawer in the most remote position in the tower, removal of the new drawer, descent and loading of the drawer on the shuttle
Robot cycle time max 40 sec
the cycle time includes the descent of the robot gripper on the shuttle, the removal of the plate with the magnets, the travel towards the most remote machine, descent for unloading and return on the shuttle