1. Poor quality phenomenon: after the cable is finished, the cable is snake-like.
Analysis of adverse causes:
1. Uneven cable tension.
2. The cable pitch does not meet the requirements.
3. Pressing the winding line into a snake shape.
Solution:
1. Adjust the release tension.
2. Adjust the pitch.
3. Pay attention to tight and neat lines.
2. Poor quality phenomenon: fan-shaped insulated wire core turning over
Analysis of adverse causes:
1. Improper pre-twist Angle.
2. The wire core on the wire release tray is arranged and turned over, and the wire core is twisted back when the footwall is separated.
Solution:
1. Adjust the pre-twist Angle or the distance between the die and the line core regulating wheel.
2. When the pretwist Angle is properly adjusted and the wire core is placed on both sides of the wire coil, special attention should be paid to the Angle of the wire core into the pressing die.
Poor quality phenomenon:
Insulation damage of wire core
Analysis of adverse causes:
1. Insulation core footwall is damaged during transportation and storage.
2. Insulation damage of insulation core coil due to ring in the process of cable forming.
3. Improper sprain of cable core insulation during cable completion.
Solution:
1. Storage and handling should not damage the insulation.
2. Deal with the snares found in the core insulation cable in time.
3. Pretwist should be appropriate.
Small core: the broken line or end of operation is not found in time.
Extrusion lines: single stranded into a cable, cage stranded.
No pipe stranding (different stranding mode).
Disk detachment: the clamping shaft is not locked
Selection of cable forming mould:
1. Parallel die: cable outer diameter +(1-2)mm
2. Dimping die: cable outer diameter +(0.5-1)mm
3. Mold aperture before wrapping = parallel die aperture
4. Mold aperture after wrapping = outer diameter +(1-3)mm after wrapping
Selection of wrapping belt in cable:
1, PP rope filled cable with two layers of non-woven gap type wrapping
2. When the foam filling strip is filled, a layer of nonwoven fabric is used to overlap and wrap