M20_Ope_E - 第479页
Chapter 16 Dispenser 16-9 16-1-3-3 Syringe data This syringe data contains data related to the dispense material. Menu: Syringe Data Window: Syringe Code (Upper) Indicates which syringes (syr inge codes) are mounted at t…
Chapter 16 Dispenser
16-8
Dispense Amount (Hemisphere ratio)
Normally, the dispense diameter is larger than the internal diameter of the
nozzle.
① The dispense diameter is calculated from the formula below.
Dispense diameter = Internal diameter of nozzle x [Dispense diameter
factor N]
Since this [Dispense diameter factor N] is determined by the dispense
material, set it with the syringe data described later.
② Assuming that the dispense shape is a hemisphere, the hemisphere
volume is calculated from the dispense diameter.
③ The result that the calculated hemisphere volume is multiplied by this
[Hemisphere ratio] becomes the dispense volume.
Dispense volume ＝ Hemisphere volume x [Hemisphere ratio]
The dispense volume is adjusted with the numeric value of [Hemisphere
ratio].
Completion of Dispensing -> Start of drawback, Delay timer
The dispense material that may drip from the nozzle tip after dispensing
needs to be sucked.
In the screw type dispense head, the screw is rotated reversely to suck the
dispense material.
This suction method is called “suck back”.
In this cell, set timing, at which “suck back” is started.
(Unit： Sec.)
Drawback Amount (Hemisphere ratio)
Set an amount of “suck back” described above.
“Suck back” amount ＝ Hemisphere volume x [Hemisphere ratio]
This “Suck back” amount is adjusted with the numeric value of this
[Hemisphere ratio].
Note: The above "Suck back" function can be enabled only for screw type dispense
heads.
It is disabled for pneumatic type dispense heads.
Clearance Adjust Value Adjust the clearance between the PCB and nozzle during dispensing.
[Nozzle Tip Clearance] corresponding to the internal diameter of the nozzle is
set in the dispense nozzle data described later.
Nozzle clearance ＝ [Nozzle Tip Clearance] + Clearance Adjust Value
(Unit： mm)
Slow-UP control Problems caused by trailing threads of dispense material after the dispensing
operation can be minimized by specifying the slow-UP function for the nozzle
after dispensing has occurred.
This slow-UP function can be ENABLED or DISABLED.
It is assumed that the dispensed
shape is a hemisphere
Internal diameter
of nozzle
Clearance
Dispense diameter
Chapter 16 Dispenser
16-9
16-1-3-3 Syringe data
This syringe data contains data related to the dispense material.
Menu: Syringe Data
Window:
Syringe Code (Upper) Indicates which syringes (syringe codes) are mounted at the respective head
Nos.
Settings can be specified at the System > User parameter > Dispense screen
(see the figure below).
To select syringe codes at this screen, right-click on [Syringe] at the [Head
Configuration] item.
Note: Also right-click on [DP Type] at the screen's [Head Configuration] item, then
select the dispense head types which are mounted on each head.
Be sure to check this information carefully, because accidents such as
collisions, etc., could occur if the installed dispense head type differs from this
setting.
Note: When using twin nozzles, right-click on [Nozzle Angle] at this screen's [Head
Configuration] item, then select the twin nozzles' basic posture.
The twin nozzle "posture at origin return" can be selected as "horizontal 2
points" or "vertical 2 points".
Right-click here,
then select
"Syringe
code".
[Note]
Be sure that the installed
dispense head type
matches the setting.
Select the basic
posture for twin
nozzles.
Chapter 16 Dispenser
16-10
Syringe Code (Lower) Enter a syringe code.
This code will link with the syringe code of the dispense code.
Comment Enter a comment.
Nozzle Code Right-click this cell to select a nozzle code of the dispense nozzle data
described later.
Additionally, double-clicking this cell will jump to the dispense nozzle data.
Syringe Compress Pressure
For screw type dispense heads, set an air pressure level necessary to feed the
dispense material from the syringe to the dispense head. (Unit: MPa)
Note: If this pressure is too high, the post-drip or fluid drip may occur after
dispensing.
Additionally, if the pressure is too low, the dispense material cannot be
supplied to the screw type dispense head at adequate timing.
For pneumatic dispense heads, sets an air pressure level necessary to
discharge the dispense material. (Units: MPa)
Temperature control setting
Sets the dispense head's heater temperature. (Units: °C)
This temperature should be set higher than the room temperature.
Note: The heater and dispense head areas may be extremely hot. Use care to avoid
burn injuries.
Note: Remove the dispense material from its storage area in advance, and allow it to
reach room temperature (approximately) before using it.
Temperature tolerance
Sets the dispense head's heater temperature tolerance. (Units: °C)
Production must not occur until the heater temperature is within the tolerance
range (±).
Remaining Amount after Fluid Shortage Detection
Set an amount that can be dispensed after the fluid shortage has been
detected.
Eject time to cup after a pause
The dispense material is ejected to the cup and discharged unless it is
dispensed for a period of time set in this cell.
(Unit: Sec.)
Eject length to cup after a pause
Set a length to eject to the cup as described above.
(Unit: mm)
Eject time after a pause The dispense material is ejected to the dot station unless it is dispensed for a
period of time set in this cell.
(Unit: Sec.)
Indicates the current
"syringe pressure" (the
setting value is indicated
in parentheses beneath this
value).
Indicates the current
"heater temperature" (the
setting value is indicated
in parentheses beneath this
value).