MEC-CP842-1.0E.pdf - 第31页
The Machin e >> Functions of Each Pa rt MEC-CP842-1.0E 3-9 The CP-842ME has an option for pal let tables that can be used to enable ba tch setting and removal of feeders. PCU (Pallet Change Unit) The PCU is used as…
The Machine >> Functions of Each Part
3-8 MEC-CP842-1.0E
Stations 1-16
Stations 1-16 represent the positions of the 16 placing heads. In this manual, “Sta-
tion” is abbreviated as “ST”. The functions of each of the 16 stations are explained
below.
ST1: Picks up parts from the feeder, indexes the feeder, and offsets the NY-
axis pickup position.
ST2: Checks for the presence of large sized parts. Also performs pre-rota-
tion (PQ) operations. The pre-rotation function rotates parts in
advance to a position near the placement angle specified in the place-
ment program. Pre-rotation occurs in 90-degree increments.
ST5: Two CCD cameras (Wide View and Narrow View) check the presence
and pick-up condition of the parts.
ST6: Measures the height of parts which the nozzle has picked up (option).
Measures the length of the nozzles (option).
ST8: Performs fine-rotation (FQ) operations. Rotates a part to its final
placement angle based on the vision processing results at ST5.
ST9: Places parts on the panels being produced. Parts rejected during
vision processing at ST5 are not placed.
ST10: Performs reverse pre-theta (PQ) and fine-theta (FQ) rotation opera-
tions. Also checks the nozzle’s origin position.
ST11: Verifies that nozzles lowered for part placement have been raised
again, and checks the nozzle “Holder A” position for the production log.
ST13: Rejects parts deemed defective by the vision check at ST5.
ST14: Rotates the rotary holder to select among the 6 nozzles.
ST15: Checks the positions of the 6 nozzles after nozzle changes.
3.2.2 Parts Supply System
Feeders
The feeders supply taped parts to ST1 where they are picked up. The CP-842E/842ME
uses WC feeders for CP machines. When using part reels 13-inches or larger, feeders
with CP-7/CP-8 exclusive reel holders are required.
Waste tape disposal unit
The waste tape disposal unit is located beneath ST1 of the placing head, and consists
of upper and lower cutters which cut the waste tape fed from the feeder. The cut
waste tape is then carried through a vacuum duct to the waste tape box at the bottom
of the machine.
Device tables
Device tables hold feeders and also are used for transport. The two device tables move
on the D-axes as instructed in the production program.
The Machine >> Functions of Each Part
MEC-CP842-1.0E 3-9
The CP-842ME has an option for pallet tables that can be used to enable batch setting
and removal of feeders.
PCU (Pallet Change Unit)
The PCU is used as a dolly for setting and removal of pallet tables.
3.2.3 Vision System
Parts camera
This CCD camera checks the size and shape of picked up parts.
Mark camera
A mark camera comprises a CCD camera, a light, and a mounting bracket. After the
CCD camera reads the fiducial marks on the panels being produced, the coordinates
are automatically corrected (offset) in accordance with internal calculations.
3.2.4 Panel Conveyance System
Carrier loader
The machine’s sequencer loader conveys panels between the in-conveyor, the XY-table,
and the out-conveyor, by way of panel clamp units (carriers). The in and out-carriers
are both operated by air cylinders in accordance with the placing program.
In-conveyor: Conveys the panel into the machine and transfers it to the in-carrier
by means of the in-lifter.
In-carrier: Transfers the panel from the in-conveyor to the XY-table.
XY-table: Clamps the panel in position and moves it to and from the position for
placement.
Out-carrier: Transfers the panel from the XY-table to the out-conveyor.
Out-conveyor: Conveys the panel to the next machine in the line.
3.2.5 Electrical Control System
Notes Regarding CP-842E/842ME Machine Operation
Absolute encoders are used on all servo motors on the machine.
The wire cable connectors on the servo motors should not be removed. If certain
cables are disconnected, then calibration data will have to be remeasured.
Calibration data measurement is also required at the following times.
•After replacing the motor.
•After disconnecting the encoder cable between the motor and servo amplifier
•If the backup battery in the servo amplifier discharges below a certain voltage
Servo zero setting is not required.
The Machine >> Functions of Each Part
3-10 MEC-CP842-1.0E
Operation panel
The operation panel comprises switches and a touch screen monitor which are used to
operate the machine.
Control box
The control box contains electrical circuit boards used to control the machine. It is
also equipped with a CD ROM drive which is required to install software.
Servo box (Servo BKT)
The servo box contains the servo BKT to which the servo amplifiers and boards are
attached. Users should not interfere with this box, except to perform servo amplifier
replacement.
UPS (Uninterrupted Power Supply Unit)
The UPS unit is positioned in the transformer box at the rear of the machine. Under
normal circumstances, the power supply from the UPS is cut automatically when the
machine is shut down. However, if the machine is not operating correctly, the power
from the UPS unit may not always be cut. As a safety precaution when performing
any kind of electrical maintenance work, always switch the UPS unit off after turning
off the main power switch.
C84PCA005E
UPS (Uninterrupted Power Supply Unit)
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