SiplaceX4_en.pdf - 第379页

1 - 13 S tudent Guide SIPLACE X Edition 09/2005 8 Collect&Place-Head 20 13 8.1.3.7 St ar Drive 5 4 6 6 1 1 2 2 3 3 5 5 Star M o t or The star m otor has a brushless three-p hase drive with integrated measurement syst…

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Student Guide SIPLACE X
8 Collect&Place-Head 20 Edition 09/2005
12
8.1.3.6 DP-Drive
Measurement System with Hall Sensors – Function:
The sensor detects the movement of ferromagnetic material (toothed wheel) through changes to
the magnetic flow.
If one element is opposite a ferromagnetic tooth and another opposite a gap, this causes a one-
sided increase in induction.
The difference arising between the two elements alters the polarity once the toothed wheel moves.
This change is evaluated, digitized and used to address or give feedback in closed-loop control.
The skilled arramgement of the position encoder make one solely Zero position on the DP-Drive.
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3
2
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DP Axis
– The DP axis is responsible for turning the compo-
nent into the correct placement position within a set
time. The hollow designed shaft of the DP axis pro-
vides vacuum and air kiss to the nozzle.
– The complete DP drive can be replaced during work.
DP Drive Details
– Control board (1) for DP motor
– Motor
(2)
– Linear guide (3) Z-axis
– Vacuum connection
(4)
– Position encoder system
(5) with resolution of 72 digits/°
– Collar (trigger ring for light barrier bottom)
(6)
– Filter disc
(7)
gear
Power
supply
Hall sensor
0V GND
Output
Load
DP Drive - Function
The DP drives are controlled by the DP
master, in accordance with the counter
pulse and set value (pickup angle, place-
ment angle and correction angle after Vi-
sion).
The DC motor is monitored by a measure-
ment system attached to the motor axis.
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Student Guide SIPLACE X
Edition 09/2005 8 Collect&Place-Head 20
13
8.1.3.7 Star Drive
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6
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Star Motor
The star motor has a brushless three-phase drive
with integrated measurement system.
The motor shaft has a hollow design. This enables
compressed air to be supplied to the holding circuit of
the 20 segments.
Vacuum in the holding circuit is measured via the con-
nection
(4).
Air kiss and vacuum in the pickup/placement circuit is
measured via the connection
(5).
The star motor is not a spare part.
Star Motor Details
– 3-phase drive (1)
– Incremental measurement system (2)
– Compressed air connection for hold circuit (3)
– Flange on the motor shaft (6).
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3
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– The star motor is a brushless three-phase drive with si-
nus commutation.
– An optical measurement system is used for both commu-
tation and recognition of the rotary angle.This supplies
the track signals A, B and the zero pulse.
– The motor is controlled with the help of these track sig-
nals. The actual values of the position are evaluated on
the axis controller.The servo unit enhances perfor-
mance and is supplied with 2-phase current from the
axis card. (third phase is a calculated value)
– A flange is installed on the motor shaft. This flange is
screwed to the star carrier. The smoothed distributor
disc
(1) is located between the flange and the star hou-
sing.
– The motor shaft has a 6 mm drilled hole through which
compressed air is supplied to the hold circuit. The
smoothed distributor disc enables vacuum and air kiss
to be measured in the hold circuit
(3) and placement/
pickup circuit
(2).
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Student Guide SIPLACE X
8 Collect&Place-Head 20 Edition 09/2005
14
8.1.3.8 Component camera
8.1.3.9 Nozzle Changer
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3
Component Camera (Type 23 digital)
The component camera is fixed to the C&P20 head
with 4 screws and can be replaced during service work.
Five levels are available for illuminating the compo-
nents.
Visual field: 8.2 x 8.2 mm
Resolution: 14.1 µm/pixels
Component spectrum 01005-2220 max. 6x6mm, Bare
Dies, Flip Chip
Component Camera Details
Optical system (1)
Fixture (2) to housing
Camera amplifier
(3)
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2
Nozzle Changer (optional)
The nozzle changer has 6 magazines, each with 12
nozzle garages for individual configuration.
A maximum of 2 nozzle changer charrier can be in-
stalled for each C&P 20 head.
If the nozzle changer is returned, the height of the noz-
zle changer needs to be checked with a calliper.
Each magazine is recognized via a micro switch and in-
dicated by a green LED.
The functions and calibration are identical with that of
nozzle changers for DLM heads.
Nozzle Changer Details
Push down openers (1) for magazines
Bracket
(2) to hold nozzle during return to garage