Theory Of Operation - 3M -Matic 7000r Instructions And Parts List

7-INSTALLATION AND SET-UP (continued)

7.17 Theory of Operation

The air supply powers movement of the centering guides
and upper drive assembly to automatically adjust the
case sealer to the box size being sealed as follows:
1. A box centering Proximity Sensor in the infeed roller
conveyor actuates movement of the centering
guides. When the operator pushes a box onto the
infeed conveyor, as shown in Figure 7-18, the
proximity sensor activates causing the air cylinder
powered centering guides to move inward, thereby
centering the box.
2. Once the box is centered by the guides, the
operator pushes the box against the Raising
Actuator/Proximity Sensor on the upper drive
assembly, as shown in Figure 7-19, causing the
upper taping head to be raised by two air cylinders.
The upper taping head will continue to rise above
the box height so the operator can insert the box
underneath the upper drive belts.
3. Once the box is pushed under the upper taping
head, the upper drive assembly raising switch is
released causing the upper drive assembly to
descend onto the box top, as shown in Figure 7-20,
allowing the drive belts to convey the box through
the upper and lower taping heads for application of
the tape seals.
4. As the box is conveyed through the machine, the
box centering Proximity Sensor is deactivated
causing the centering guides to return to their
full open position, ready for insertion of the next box.
At this point it is recommended that the centering
proximity sensor and upper drive assembly switches
be manually actuated to understand the functions
described above. Activation (run a box on conveyor)
of the automatic sensors causes the guides to close,
Deactivation (box moves past Proximity Sensor )
causes the guides to open. Depressing the upper
drive assembly raising switch causes the upper
drive assembly to rise, releasing the switch causes
the drive assembly to descend.
Notes:
1. Machine or taping head adjustments are
described in "Adjustments" Section for
machine or Manual 2 or Manual 3 for taping heads.
2. Box drive motors are designed to run at a
moderate temperature (See Specifi cations)
In some cases, they may feel hot to the touch.
7000r-7000r3 Pro - NA
Proximity
Sensor
Figure 7-18 Box Centering Proximity Sensor
Figure 7-19 Drive Assembly Raising Switch
Figure 7-20 Drive Belts
30
Raising Switch
2014 June