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S tud ent Guid e HS-50 A dvanced I E dition 06/2 002 1 1 P neumatic Cutt er and Empty- T ape Du ct 19 à I n this position tighten all 4 scre w s crosswise. -> Tighten the screws to t he c orrect torque - > see T ab…
Edition 06/2002 Student Guide HS-50 Advanced I
11 Pneumatic Cutter and Empty-Tape Duct
18
à Pull the cutter out away from the contact surfaces (on the machine frame) towards the outside
of the machine (towards your body).
à Set the cutter down such that it does not pose a risk of injury to uninvolved personnel either.
Put it in its own crate / container immediately.
11.6.1.2 Installing the Cutter
à Make certain that the following warning signs are on the cover plate over the movable blade. If
not, install them (Item No.: see Section 11.2):
– Adhesive Label with text " Disconnect machine from mains voltage and....",
– Adhesive Label: Triangle warning symbol "Hand injury".
CAUTION
Tighten the screws to the correct torque -> see Table, Fig. 11.4.2. 11
à If there were disks or plates inserted between the contact surface of the cutter on the machine
frame and the cutter itself, re-install them now.
-> The cutter must be shimmed to the same height at all contact points however.
à In the reverse order to disassembly, place the new pneumatic cutter (Item no.: see Section
11.2) on the contact surfaces of the machine frame and push it in to the threading position.
à To avoid dropping the cutter, insert all four M6 screws into the holes now:
à Pull the cutter as far as possible away from the PCB conveyor for the time being.
à Snug up the screws somewhat for the time being.
à Remove the cover from the control board of the new cutter.
à Make the plug-and-socket connections for the power supply and drive on the control board (al-
location: see Fig. 11.6.5 -> 11, 10).
à Use a cable tie to fasten the cables running to the cable pit to the fixing pedestal on the control
board box (see Fig. 11.6.5 -> 15).
The strain on the cables / plug-and-socket connections must be relieved (see Fig. 11.6.6 -> 8).
à Remove the cover from the cable pit and make the compressed air connection to the machine
at the Y-plug-in coupling (see Fig. 11.6.3 -> 9).
à Place the cover back on the control board and the cable pit.
à Install the empty-tape duct assembly and check the entire length of the gap between the lead-
ing edge of the tape deflector and the "empty-tape baffle, inside", as described in Section
11.6.8.
à If necessary, slide the cutter in the slots parallel to the direction of the PCB conveyor until you
reach the TARGET distance 1.0 to 1.5 mm (see Fig. 11.4.3 -> Detail).
Student Guide HS-50 Advanced I Edition 06/2002
11 Pneumatic Cutter and Empty-Tape Duct
19
à In this position tighten all 4 screws crosswise.
-> Tighten the screws to the correct torque -> see Table, Fig. 11.4.2.
à Perform the appropriate “Final Steps” (see Section 11.6.11).
11.6.2 Turning the Stationary and Movable Blade 180 °
NOTE:
The movable blade has a cutting edge on both sides.
If one cutting edge becomes worn, the blade can still be used by turning it 180° on its vertical axis
and re-installing it.
At the same time, the stationary blade must also be turned 180° on its vertical axis and installed.
If both edges are already blunt, proceed as instructed in Section 11.6.3. 11
11.6.2.1 Removing the Blades
WARNING
Wear thick protective gloves.
You might cut yourself on the blades and the tape deflector.
Never reach into the pneumatic cutter from below or into the empty-tape duct from above.
Make certain that no one can injure themselves on the dismantled blades standing next to the ma-
chine. 11
à Remove the cutter from the machine, as described in Section 11.6.1.
à Before any further disassembly, fasten the dismantled cutter to the retaining bracket (LH and
RH) with 2 parallel clamps on a flat sturdy work bench or screw it tight on the mounting plate
(Item no.: see Section 11.3) with four M6 socket hex head cap screws
-> see CAUTION in Section 11.6.10.
Edition 06/2002 Student Guide HS-50 Advanced I
11 Pneumatic Cutter and Empty-Tape Duct
20
Fig. 11.6.1 Removing/Installing Stationary and Movable Blade
Key:
1. Stationary blade
2. Fastening of the stationary blade (under the deflector plate):
2 Socket hex head cap screws M6 x 35
3. Articulated joint
4. Screws fastening the articulated joint in the movable blade:
1 Socket hex head cap screws M4 x 25 each, Strength 12.9, Loctite no. 243
5. Movable blade under the tape deflector
6. Direction for removing the movable blade
7. Deflector plate, see also Fig. 11.4.2