Possible cause:
- Check the wire groove, maybe the profil is not straight anymore (see also if short near the seam).
- Too much welding current.
- Too low welding frequency.
- Check the tension the belt for the profiling unit and pendulum rollerhead.
- Servo drive transport belt: Check if the whole transport belt unit is vibrating during positioning. If yes: Change the drive gear on top the servo motor.
Possible causes:
- The timing of the rounding process is too late.
- The rolled can body is clamped or caulked in the catch station.
- One or more transport fingers is / are twisted or lost.
- The tension of one or both transport finger timing belts is too low.
- Check the transport finger’s offset.
- The final pusher fingers of the Synchrostar are taking over the can body from the transport fingers too late.
- The precalibration is set too tight, or some precalibration rollers are not easily turning anymore.
- Check if any groove of the z-bar section is worn.
