00194614-08 Trainingsdoku. SG X-Serie_X4i SW70x (AL2)_EN - 第270页
Collect, Pick and Place Head (CPP) Overview of Parts Overview Student Guide SIPLACE X-Serie and X4I SW70x (AL2) 270 ▪ T he fr on t pl at e w i th th e Z -d r iv e, ja w, r ace w ay an d r e tr ac t u n it is one spar e p…
Collect, Pick and Place Head (CPP)
Overview Overview of Parts
269 Student Guide SIPLACE X-Serie and X4I SW70x (AL2)
Pressure Control Valve - Function
Pressure Control Valve - Function
Z Axis
8.2.7.3 Z Axis
▪ The secondary part (magnets) of the linear motor is the moveable part on the z-axis. The primary
part is fixed. Benefit: There is no power supply cable of the motor that moves up and down with the
Z axis.
▪ The jaws are installed on the secondary part of the Z motor, for mechanical docking of the DP drives.
▪ The retract unit is integrated in the Z-Axis frame and is responsible for protecting the Z-axis from
damage if there is no power supplied.
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 ≤ 12 ms.
▪ The function Early vacuum should always be
switched on for the CPx head. However, if this
function is switched off, the piston will be in the "open
position". The vacuum will only be switched on again
after the "light barrier down" signal has been issued .
-> 2 additional switching steps -> time loss.
Legend
1. Incremental measurement system, resolution 0.5 µm
2. Retract unit
3. Lubrication point for Z axis support ball bearing
4. Secondary part with magnets
The secondary part is fitted to the Z axis.
5. Jaws
The jaws are fitted to the linear guidance of the Z axis.
6. Linear motor, primary part
7. Actuator on the retract unit
Collect, Pick and Place Head (CPP)
Overview of Parts Overview
Student Guide SIPLACE X-Serie and X4I SW70x (AL2) 270
▪ The front plate with the Z-drive, jaw, race way and retract unit is one spare part. It is not possible to
exchange any parts from the front plate, because exact adjustments are necessary which can only
be performed at the factory.
Z Drive Function
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.
▪ Servo amplifier for the Z axis SDS120/1.5Z2 with activation by A364. In SX machines the axes are
controlled via the HCU (Head Control Unit)
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
271 Student Guide SIPLACE X-Serie and X4I SW70x (AL2)
Retract unit
8.2.7.4 Retract unit
Retract Un it Functions
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 retract system has been installed to protect the Z axis should the gantry be moved when the
machine is switched off. This retract unit keeps the Z axis in the safe, upper position during zero current.
Component Sensor
8.2.7.5 Component Sensor
As a default, each CPP head is fitted with a component sensor in the pickup/place position.
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 retract unit is fixed to the Z axis. This retract 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 retract unit is not a spare part and can only be
replaced together with the complete front plate of the
head.
NOTICE
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 retract 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)