Walther prazision 91489, Working Instruction

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Working instruction
english
typ 91489
Works on malfunction
and damages
38
10.4 Emergency separation facility
The tool changer is to be moved with the mounted tool and the robot towards the tool parking
station. In doing so the tool changer must be lowered up to 0 mm distance.
The 12 unlocking screws item 21 (sealed with yellow lacquer) being at the periphery of
the unlocking ring item 19 are to be released by means of hexagon socket screw
key SW4 / approx. 130 mm long. For that purpose lead in screw driver straight above
and below the plug housing in an inclined way into the center line of the tool changer
between subassembly elements.
The unlocking screws are to be released by at least 10 mm (= 10 rotations) or
entirely unscrewed.
Slowly vertically extend robot out of the tool parking station; tool remains in the
tool parking station.
Caution!
If the tool (tool side) is also lifted with the vertical extension the
robot movement is to be stopped and lowered again!
A slight jamming is then to be eliminated by means of a shaking movement at the
tool side and the robot extended again.
Reactivation of the locking function at the robot side:
- Check of mechanics – see item 9.2.1.
- Damages can occur after a crash especially at the unlocking ring and the
unlocking screws – for that reason please check carefully!
- Damaged parts (cracks, deformations, ball indentations) are to be replaced.
- Push in locking ring item 6 in annular recess at the robot side and turn it so much
that the radial bores correspond with the radial bores in the unlocking ring item 19.
- Apply adhesive Loctite 242 to threads of the 12 unlocking screws item 21 for safety rea-
sons, slightly grease blunt start.
- Screw in 12 unlocking screws with a hexagon screw driver SW4 and then drive
them in crosswise.
Torque= 5,5 Nm.
Assembly instruction
Special extras (welding plug with primary box or stamping-riveting/bolt elementcarrier) can
cover one or more screws of the emergency unlock.
To be able to operate the emergency unlock these extensions must be taken off first.
For that purpose it is necessary that the fastening elements (cylinder pins of the electro plugs)
or screws remain accessiblewhen the tool changer is fitted at the tool side or at the robot side.