00196044-05 - sg x und x4i fse_en - 第305页

Collect, Pick and Place Head (CPP) Overview of Parts Overview S tudent Guide (FSE) SIPL ACE X Series and X4I Edition 01/2009 EN Collect, Pick and Place Head (CPP) 305  The secondary pa rt with the magnets is part of the…

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Collect, Pick and Place Head (CPP)
Overview Overview of Parts
Student Guide (FSE) SIPLACE X Series and X4I
Collect, Pick and Place Head (CPP) Edition 01/2009 EN
304
Pressure Control Valve - Function
8.2.7.3 Z axis
Legend
A : Piston setting for max. vacuum during pickup
B : Piston setting for air blast during placement
1. Compressed air inlet
2. Venturi nozzle
3. Vacuum or air blast outlet, depending on
piston setting
4. Pistons
5. Motor
After initialization, the piston is in a central
position, in which neither vacuum nor air blast
is applied to the nozzle.
During pickup, the piston is always in the
Open
position, so that maximum vacuum is
generated and is present at the nozzle. The
switchover time (pressure build up time)
between max. vacuum of –850 mbar to max.
air blast of +200 mbar ≤ 12ms.
The function
Early vacuum
should always be
switched on for the CPP head.
This ensures that max. vacuum is always
present at the nozzle and that the switchover
to air blast only occurs on placement.
Legend
1. Incremental measurement system, resolution
0.5 µm
2. Return unit
3. Secondary part with magnets
The secondary part is fitted to the Z axis.
4. Jaws
The jaws are fitted to the linear guidance of the
Z axis.
5. Linear motor, primary part
6. Actuator on the return unit
Collect, Pick and Place Head (CPP)
Overview of Parts Overview
Student Guide (FSE) SIPLACE X Series and X4I
Edition 01/2009 EN Collect, Pick and Place Head (CPP)
305
The secondary part with the magnets is part of the Y axis and the primary part is fixed. Benefit, there
are no moveable cables for supplying power to the motor.
The jaws are installed on the secondary part of the Z motor, for mechanical docking of the DP drives.
This return unit keeps the Z axis in the safe, upper position during zero current.
The Z drive forms a complete unit, together with the head front plate, jaws, raceway, measuring
system and return unit. Do not remove or replace individual parts of this unit, as precise settings are
required for each part.
Z Drive Function
The Z drive is a 3 phase linear motor. The moveable part (magnets) is guided on the one side via
two linear guidances and, on the other side, through a support roller.
The incremental measuring system is located on the side with the support roller.
Each Z drive has an EEPROM, in which the following data is stored:
– Production data (manufacturer, serial number, ...)
– Operating data (errors, travel cycles, ...)
– Machine data (motor data, travel profiles, zero point correction, max. and min. position)
The measuring system has a resolution of 0.5 µm. The zero pulse is approx. 2 mm under the top
stop.
New servo amplifier for A364 SDS120/1.5Z2
Legend
1. Z motor, primary part
2. Z motor, secondary part
3. Raceway
4. Support roller
5. Linear guidance Z axis
6. Snap jaws
Collect, Pick and Place Head (CPP)
Overview Overview of Parts
Student Guide (FSE) SIPLACE X Series and X4I
Collect, Pick and Place Head (CPP) Edition 01/2009 EN
306
8.2.7.4 Return unit
Retract Unit Functions
At zero current, the bearing friction of the Z axis is not sufficient to protect the axis from falling down. A
pneumatic return system has been installed to protect the Z axis should the gantry be moved when the
machine is switched off. This return unit keeps the Z axis in the safe, upper position during zero current.
8.2.7.5 Component sensor
Each CPP head is fitted with a component sensor in the pickup/place position, as a standard. This
component sensor monitors the presence and/or component height after pickup and before placement.
The sensor is fixed to the head with two screws and can be replaced as a complete unit during service
work.
Legend
1. Pneumatic cylinder
2. Solenoid valve
3. Compressed air connection
4. Z axis driver
The return unit is fixed to the Z axis. This return
unit keeps the Z axis in the safe, upper position
during zero current. This ensures that the
placement head is not damaged when the
machine is switched off or in the event of a power
cut.
The return unit is not a spare part and can only be
replaced together with the complete front plate of
the head.
NOTE:
The Z axis control system is designed to ensure that, should the machine power supply fail (or
be switched off), there is always enough power temporarily stored by the Z motor servo unit and
axis controller board to move the Z axis to the upper position.
Power failure is recognized by the issuance of a "Power fail" signal. This "Power fail" signal
enables the relevant function (upwards movement of Z axis and activation of the return unit) on
the axis controller board.
Legend
1. Power/data supply connector
2. Transmitter and receiver unit
3. Laser beam
4. Fixture to head casing
(2x centering pins, 2x screws)