Vibratory Track Screw Feeder FF/FM503H ver2
16
7.7.
Setting of vibrator vibration strength
This adjusts the speed of the screws traveling along the track.
After setting the vibrator vibration frequency by adjusting the “7.6 Adjustment of vibrator vibration frequency”
in previous section, set the vibrator vibration strength in this section so that the screws can travel along the
track smoothly.
To adjust the vibrator vibration strength, change the value of the operation parameter “Vibrator vibration
strength setting (Pa.21)”. For how to adjust the parameter, refer to
“8. Setup procedures”.
Do not set the strength too strong so that the screws move about on the track.
If the vibrator vibration strength is too strong, track may be worn earlier or a failure with the escapement unit
may happen.
7.8.
Adjustment of vibrator vibration time
In the escapement unit of the 2-piece feeding type, a screw is fed to the feeding unit after a previous screw has
been fed. For this reason, the vibrator is required to vibrate for a certain time after a feeding operation
completes. This section sets the vibration time.
To adjust the vibrator vibration time, change the value of the operation parameter “Vibrator vibration time
setting (Pa.87) after screw feeding”. For how to adjust the parameter, refer to
“8. Setup procedures”.
Caution: If the setting time is too short, a problem with screw feeding will happen.
7.9.
Adjustment of photoelectric sensor
The photoelectric sensor is mounted on the top of the track. When the screws aligned on the track reach the
detection position of the photoelectric sensor and the photoelectric sensor turns ON, the hopper track stops
swaying and the vibrator stops vibrating automatically. When the number of screws on the track decreases as a
result of screw tightening operations etc., the hopper track starts swaying and the vibrator starts vibrating
automatically to supply screws in the basket onto the track. It is therefore necessary to position the
photoelectric sensor properly in order to detect screws on the track.
(1) Sensitivity adjustment
Because the photoelectric sensor used is a sensor of built-in amp type, it is not necessary to adjust its
sensitivity.
(2) Adjustment of mounting position
The photoelectric sensor whose mounting position is proper is shown in Fig.2 2 and Fig.2 3; the
photoelectric sensor whose mounting position is improper is shown in Fig. 24, Fig.2 5 and Fig.2 6.
In the latter case, loosen screw A or screw B shown in Fig. 21 and adjust the mounting position of the
photoelectric sensor properly.
Proper mounting position
The optical axis of the photoelectric sensor is in a position that allows it
to detect the head of a screw properly.
Track
Photoelectric sensor
Photoelectric
sensor
Escapement unit
Photoelectric
sensor
Track
Fig. 21
Fig. 22
Fig. 23
Summary of Contents for FF503H
Page 60: ...Memo...
