Appropriateness of automation


Fig. 61 – Yarn transport from the ring spinning machine to the winder (as proposed by Schlafhorst)

When we look at the manufacturing processes used in the textile industry, spinning involves a mixture of workshop and production line operations, with the workshop the predominant feature. The installation consists of many manufacturing stages forming self-contained departments, with the different intermediate products usually being transported in quite large units from one department to the next and also usually being stored between the different stages. Material therefore hardly flows along the shortest path in regular cycles from a production unit directly to the same downstream operation every time. This type of manufacturing process has four serious drawbacks:

  • high transport costs (more than 60% of a spinning mill‘s wage costs are transport costs)
  • long material lead times (with correspondingly long delivery lead times) and
  • intermediate storage of large volumes of material (substantial amounts of capital tied up)
  • deterioration in quality, damage to the material.

It is therefore hardly surprising that there is a steadily increasing awareness of the importance of transport in spinning mills and among machinery manufacturers and that opportunities for improvement are being sought. Several textile machinery manufacturers are already offering automated transport systems. A distinction has to be made between two types of automated transport equipment between ring spinning machines and winders:

  • interconnected transport and
  • interconnected machines.