SG_FSE_SiplaceHF_HF3_00193901-05_eng - 第244页

1 - 44 S tudent Guide SIPLACE HF/HF3 6 Collect &Place-He ad / DLM2 Edition 09/2005 44 6.3.33 Special mode: "brake slow" mean: move slowly into (Z)-position Fig. 6.3 - 30 Special mode brake slow Z-axis downw…

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Student Guide SIPLACE HF/HF3
Edition 09/2005 6 Collect &Place-Head / DLM2
43
6.3.32 Placing component detailed: Z-axis downwards
Fig. 6.3 - 29 Placing component detailed: Z-axis downwards with current sensor mode
A placement force of 3 to 5 N at the C&P head.
End signal X-, Y-, Star-axis:
– all 3 end signal available
– vacuum check before placement is executed (alternatively the component check in the
comp. sensor).
– component on the nozzle?
Z-axis starts:
– Z-axis positioning downward
LB above switches:
– solenoid air kiss ON
– enable LB bottom
LB bottom switches:
– valve drive, pick up- placement position, to air kiss
current sensor on servo amplifier trigger:
– End signal positioning downward;
6.3.32.1 Advantage of placement with increased placement force
This "increased placement force" at placement offer you (on all stations):
– a good contact to the solder paste for large components / large contact surfaces to the PCB.
– A delay of ~20 ms compared to the standard placement cycle.
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Student Guide SIPLACE HF/HF3
6 Collect &Place-Head / DLM2 Edition 09/2005
44
6.3.33 Special mode: "brake slow" mean: move slowly into (Z)-position
Fig. 6.3 - 30 Special mode brake slow Z-axis downwards
This special mode is ONLY on SC/MC 503 station and higher.
End signal X-, Y-, Star-axis:
– all 3 end signal available
– vacuum check before placement is executed (alternatively the component check in the
comp.sensor).
– component on the nozzle?
Z-axis starts:
– Z-axis positioning downward
LB above switches:
– solenoid air kiss ON
– enable LB bottom
special mode: 44 digit (1 mm) before target Z-height the Z-axis move with minimum speed
LB bottom switches:
– End signal positioning downward;
– valve drive, pick up- placement position, to air kiss
6.3.33.1 Advantage of special mode "brake slow" -move slow into Z-target position
This "break slow" at placement offer you (on SC/MC 503 stations and higher):
– a bubble free contact of the FLIP-CHIP component into a filling material.
– A delay of ~20 ms compared to the standard placement cycle.
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Student Guide SIPLACE HF/HF3
Edition 09/2005 6 Collect &Place-Head / DLM2
45
6.3.34 Special mode "start slow" Z-axis upwards
Fig. 6.3 - 31 Special mode Start slowly Z-axis upwards after placement
This special mode is ONLY on SC/MC 503 station and higher.
LB bottom switch:
– End signal positioning downward; valve drive, pick up- placement position, to air kiss;
– Measure air kiss pressure component placed
– Start term to move up
Z-axis started:
– Z-axis positioning upwards for 44 digit with start speed. (The vacuum inside nozzle had
gone)
LB above:
– reset solenoid for air kiss
– reset LB bottom signal
– enable start for gantry axes
Z-axis end signal (Z-axis on 0-position):
– enable start for Star-axis
– (503) vacuum check after placement
6.3.34.1 Advantage of special mode "start slow" -start slow Z-axis upwards after placement
This "start slow" after placement offer you (on SC/MC 503 stations and higher):
– The danger to take a component after placement from the PCB is reduced.
– A delay of ~20 ms compared to the standard placement cycle.
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