M8_ServiceManual_e.pdf - 第46页
3 Mechanical Section 3-6 Nozzle When obstacles such as solder paste are stuffed up in the nozzle, the suction b ecomes weak. And existence of an obstacle at the nozzle ti p prevents the vision processing from recognizing…
3 Mechanical Section
3-5
■Checking the nozzle for clogging
With nozzles placed in the head, turn ON the suction to check the air pressure. “Nozzle clog criteria” has
been set for each nozzle. The air pressure must be below the criteria. If it is not, the nozzle will be
considered to be clogged and an error will occur. (The “standard open value” given in the table below is
obtained from measurement of the open value of each nozzle (brand new nozzle) and must be used as a
reference.)
Standard open value (reference) Nozzle clog criteria
Nozzle type
(mmHg) (MPa) (mmHg) (MPa)
P031 480～560 0.064～0.075 600 0.080
P032 420～470 0.056～0.063 500 0.067
P033 280～350 0.037～0.047 400 0.053
P034 190～240 0.025～0.032 350 0.047
P005 80～110 0.011～0.015 300 0.040
P006 80～110 0.011～0.015 300 0.040
P012 190～240 0.025～0.032 350 0.047
P013 80～110 0.011～0.015 300 0.040
P017 300～350 0.040～0.047 420 0.056
P018 80～110 0.011～0.015 300 0.040
P019 80～110 0.011～0.015 300 0.040
P020 80～110 0.011～0.015 300 0.040
NOTE: 1mmHg=133.322Pa=0.00013332MPa
To maintain the designed accuracy and component-placement rate of the machine, clean the air passage
between the air filter assy. and nozzle holder periodically.
ACTION: Blow away with an air blower from the nozzle’s rear end. When the nozzle is placed on the head, do it from
the filter mounting air tube.
● Cleaning interval
Approx. once a month
3 Mechanical Section
3-6
Nozzle
When obstacles such as solder paste are stuffed up in the nozzle, the suction becomes weak. And existence
of an obstacle at the nozzle tip prevents the vision processing from recognizing smaller components. Clean
nozzles to avoid these troubles.
■ Nozzle Cleaning with Air Blow
Clean the nozzle tips with alcohol and then blow away dust with a blower (more than once a week). When
choking error occurs, also clean the nozzle.
Be careful not to apply alcohol to identification marks. Quickly wipe off if applied.
■ Nozzle Cleaning using Wire (1)
Normally, cleaning with the air blow may be enough. However when the dirt is firmly fixed, clean the
nozzle using a wire.
NOTE: To clean the nozzle using a wire, the O-ring and the nozzle filter inside the nozzle must be removed first.
Cleaning the nozzle with a wire without removing them may result in the damage or loss of them. After the
nozzle is cleaned, make sure to re-install them using a special tool.
NOTE: For a description of how to remove/install the O-ring and nozzle filter, refer to “Removing O-ring and
Nozzle filter” and “Attaching O-ring and Nozzle filter” given later in this manual.
Take care not to get injured with the fine wire when cleaning the nozzle.
ACTION:
① Have a wire ready.
(300mm length, 0.1mm diam. Part No. KV8-M8887-00X)
② Remove the O-ring and nozzle filter from the nozzle.
③ Pass the wire through the nozzle hole.
Nozzle
Wire
3 Mechanical Section
3-7
④ Wind to fasten the wire between both sides of the nozzle cleaner assy.
(Part No. KV8-M8881-A0X)
⑤ Move the nozzle back and forth to clean the nozzle hole.
⑥ Remove the wire and blow some air into the nozzle hole.
■ Nozzle Cleaning using Wire (2)
You can use the wire by fastening the wire ends with adhesive tape. In this case, adhesive may remain on
the wire. So be sure to clean the wire end before pulling out the wire from the nozzle.
Nozzle Cleaner
Assy.
Adhesive Tape