GL541操作手册.pdf - 第59页
Part 2 2 – 26 GL-541E Operation V ersion 2.0 Chapter 3 Needle Of fset
Part 2
3. Needle Offset
The alignment between the glue position specified in the program sequences and the actual
glue dispensing position is not always exact. The needle offset command is used to
compensate for this difference. The coordinates used for needle offset compensation are the X,
Y, and θ coordinates.
3.1 Procedure for Measuring the Needle Offsets
(1) Confirm that glue is not being dispensed in the needle center measurement area.
If the board has been dirtied by glue, wipe it clean with a cloth soaked in cleaning
solvent.
(2) Inch the X- and Y-axis to the starting position for glue dispensing and enter the
servo count readings at this position into the Proper data items
254: Glue_check_orgn_position_X and 255: Glue_check_orgn_position_Y.
(The start position is determined visually by the operator.)
Note: To save this data it must be entered manually in the Proper data stored in F4G. It
cannot be saved by using the “Receive Proper” command. Once this data is saved
in Proper data, there is no need to save it again unless the starting position is
changed.
(3) Press [SET] -> [MANUAL] -> [NEEDLE] -> [Z1], (Z2), (Z3) -> [OK] -> [NOW POS]
(DEFAULT POS). After selecting the Z-axis on which to perform needle offset, the
START button is enabled.
(4) Press the START button to dispense glue at the specified position. The position of
the dispensed glue is then measured by the mark camera.
(5) The measured needle offset values are retained in the following Proper data items:
256: Needle_offset_X_Z1 offset of Z1 nozzle X-coordinates (0.01 mm)
257: Needle_offset_X_Z2 offset of Z2 nozzle X-coordinates (0.01 mm)
258: Needle_offset_X_Z3 offset of Z3 nozzle X-coordinates (0.01 mm)
259: Needle_offset_Y_Z1 offset of Z1 nozzle Y-coordinates (0.01 mm)
260: Needle_offset_Y_Z2 offset of Z2 nozzle Y-coordinates (0.01 mm)
261: Needle_offset_Y_Z3 offset of Z3 nozzle Y-coordinates (0.01 mm)
262: Needle_offset_Q_Z1 offset of Z1 nozzle θ-coordinates (pulse)
263: Needle_offset_Q_Z2 offset of Z2 nozzle θ-coordinates (pulse)
264: Needle_offset_Q_Z3 offset of Z3 nozzle θ coordinates (pulse)
Note: To retain the needle offset Proper data in F4G, execute the receive Proper
command.
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GL-541E Operation
Version 2.0
Chapter 3 Needle Offset
Part 2
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GL-541E Operation
Version 2.0
Chapter 3 Needle Offset
Part 2
4. Block Skip Function
A multi-block board is a board which has the same pattern printed on it several times.
It is possible that one or more of these patterns on a multi-block board may be defective. If this
happens, the defective blocks must be skipped so that no glue is dispensed on them.
Fuji machines have a special ‘block skip’ function to enable the operator to specify which blocks
of a multi-block board should be skipped.
4.1 How to Use the Block Skip Function
The block skip function can be used in the following three ways. Choose the best
method to suit the operating situation.
• Use the F4G block skip setting in sequence data in the program editor.
This is the best method to use when skipping the same block on every board.
Refer to the F4G Tutorial Manual for details about setting a block skip in the
production program.
• Use the [Skip] command on the machine.
This is the best method for skipping a particular block in a small lot of boards.
Refer to Section 4.2.1 for details about setting the block skip function at the machine.
• Use block skip marks on the board.
The fiducial camera reads the block skip marks on the board (marks used for
identification with the block skip function) and automatically skips all blocks which
are marked to be skipped.
This makes it easy to skip blocks at random.
Refer to section 4.2.2 for details about skipping blocks using the mark camera.
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GL-541E Operation
Chapter 4 Block Skip Function
Version 2.0