Rieter R 35 ensures seamless piecing of yarn

06 Jan '14

3 min read

In today’s yarn markets, an inadequate piecing quality alone can cause an otherwise high-quality yarn not being accepted in downstream processing. For the new Rieter R 35 semi-automated rotor spinning machine the renowned AMIspin piecing process has been optimized and is more operator-independent.

The new R 35 semi-automated rotor spinning machine has been designed exactly to meet the following needs:

Higher productivity

Better yarn quality

Minimized piecing quality variation

Effective yarn quality monitoring

Reduced energy consumption per kilogram of produced yarn

Ergonomic and operator-friendly handling.

With a semi-automated machine, ergonomic and operator-friendly design and ease of the piecing operation are necessary for better machine performance and to secure highest quality and productivity.

Optimal machine working height for any operation

Optimal working conditions are decisive in order to reduce operator errors when cleaning the rotor, doing the piecing preparation or removing yarn faults from the package. For this reason, the R 35 rotor spinning machine has optimal low working height combined with excellent accessibility. This secures the machine efficiency and the yarn quality.

AMIspin - the most reliable and easy semi-automated piecing system

AMIspin is uinique for its simplicity and reliability. The handling of AMIspin has been improved by using an individual feed drive for the sliver, applying piecing technology known from other Rieter rotor spinning machines. After preparing the yarn end and cleaning the rotor, the piecing process is launched automatically as soon as the box is closed. As a result the quality, speed and success rate of AMIspin piecings have been improved.

Optimized yarn entry for fast and easy piecing

With the R 35 the insertion of the prepared yarn end into the exit tube has been simplified., because the yarn entry is now from the front (Fig. 1). This accelerates the piecing operation and allows reduction of the operator time. It guarantees excellent piecing quality with high value for the yarn users. For the spinner it helps to maintain higher machine efficiency even with a high ends down rate and fewer operators.

Individual sliver feeding drive for better piecing quality

Immediately after each yarn break, the single feed drive pulls back the sliver into a protected position, thus ensuring that the piecing always is formed from undamaged fibers. During piecing the individual drive allows more exact sliver feeding to further optimize the appearance and strength of the piecings.

AMIspin quality more operator-independent

With optimized yarn entry, individual drive for sliver feeding and loop compensator on the R 35 rotor spinning machine, piecing quality becomes more operator-independent even with a semi-automatic machines.

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