00196044-05 - sg x und x4i fse_en.pdf - 第309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) 309 8.2.7.8 St ar carrier 8.2.7.9 Single Core Solution (S…

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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
308
8.2.7.6 Hold circuit
8.2.7.7 Star
The star consists of the star carrier, on which the 12 DP drives are located, the control board (Single
Core Solution), the valve terminal and the E/D transformer.
The holding circuit is in the center of the star.
The complete unit is fixed to the rotor of the star motor.
Legend
1. Compressed air inlet 4.5 bar
2. Two part silencer for exhaust air from the
venturi nozzles and fixture for the silencer (6)
3. Casing with venturi nozzles
4. Fixture of holding circuit to star carrier
5. Inner drillings: Venturi nozzle inlet
(compressed air)
Outer drillings: Vacuum to the segments.
The holding circuit (4) is fixed with six screws to
the star carrier. It consists of a venturi block with
12 small venturi nozzles (5), a silencer (2) and a
compressed air connection (1).
The compressed air inlet feeds the compressed air
(min. 4.5 bar) via the valves to the venturi nozzles.
Each venturi nozzle supplies one segment with
vacuum in the hold circuit.
If a segment is in the pickup/placement circuit, the
holding circuit vacuum is increased by the
pressure control valve (for pickup) or eliminated
via air blast (for placement).
Legend
1. Star carrier
2. Single Core Solution
3. Valve terminal
4. E/D transformer
5. DP drives
6. Holding circuit in the middle of the star
7. Fixture on rotor of star motor
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)
309
8.2.7.8 Star carrier
8.2.7.9 Single Core Solution (SCS)
Legend
1. Star carrier
2. Star carrier plate
3. Hose to DP drive
4. Back of the star carrier
5. Front of the star carrier
6. DP drive
The star carrier plate is fixed directly to the rotor of
the star motor.
The valve terminal and the E/D transformer are
fixed to the back of the star carrier.
The twelve DP drives are fixed to the front and the
holding circuit with control unit (SCS) is fixed to the
center.
The vacuum or air blast is fed via the holding
circuit through the star carrier plate to the
individual DP drives (through a hose).
Legend
1. Board control module
2. Board power module
3. Carrier plate
4. Connector for data and power supply to the DP
drives
The SCS has two main tasks:
1. Controlling the DP drives
2. Evaluating the Z down light barrier.
The assembly consists of a carrier plate and two
boards (control module and power module).
The power and data supply is via the head CAN
bus from the intermediate distributor, E/D
transformer to the SCS.
The SCS features 12 connectors, which establish
the connection for the power and data supply to
the DP drives.
The SCS can be replaced during service work.
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
310
8.2.7.10 Valve terminal
The valve terminal consists of 12 valves (1), one for each segment.
The compressed air from the holding circuit (2) is distributed over 12 channels for the 12 segments. Each
of these channels has a valve. This enables the compressed air to be connected or disconnected for
each segment (3).
This means, After a component has been placed, the compressed air can be disconnected for this
segment.
Before picking up a component, the compressed air is connected again and vacuum is present at the
nozzle via the holding circuit with venturi nozzles. The disconnection of compressed air after placement
reduces the compressed air per placement head by approx. 40-50%.
The outer channels (4) are used to measure the holding circuit and supply the air blast or vacuum for the
pickup/placement circuit via the pressure control valve.
The valve terminal can be replaced during service work.
Holding Circuit Valve Functions
Legend
1. Valve (12x)
2. Compressed air from holding circuit
3. Inner channels - compressed air for the
segments
4. Outer channels
5. Contact free data transfer (receiver)
6. Flexprint for energy and data transfer to SCS
The valve terminal consists of 12 holding
circuit valves, which can be switched
independently at any time and in any star
position.
Switching on the valves means “throughput”:
Compressed air is present at the venturi
nozzles (voltage = 0V). If a valve should fail or
if it is without a voltage supply, vacuum is
always present at the holding circuit.
Switching off the valves means “valve closed”:
There is no compressed air present at the
venturi nozzle (24 V voltage is present). This
saves compressed air!