Page 40 - April-May 2021

40 An unbeatable combination: The TD 10 with AUTO DRAFT 41

A breakthrough for break drafts

Modern draw frame machines offer a fantastic range
of settings that can be adjusted to meet each
spinners’ unique needs. But adjusting the break draft
has still been difficult, unpredictable and very slow.
The AUTO DRAFT function from Truetzschler, which is
part of our successful autoleveller draw frame TD 10,
uses an innovative measuring method to
automatically optimize the break draft during
production conditions. And it takes less than two
minutes.

For many decades, spinners have been wrestling
with the awkward problem of how to adjust the break
draft on the draw frame. This is partly because
adjusting the break draft involves changing a wide
range of settings on the draw frame – and each
setting needs to be adapted in line with every other A massive range of attractive benefits
setting. As a result, many spinners simply leave their Our customers across the textile industry around the
break draft settings untouched because they don’t Influence of the break draft world are already benefitting from AUTO DRAFT, a
have time to interrupt their busy production schedule. feature in our autoleveller draw frame TD 10. The
Faster and better than anything else on the market major advantages include:
On top of this, there is currently no laboratory test or Our innovative AUTO DRAFT function provides a • Optimal adjustment of the break draft – including
measured variable that provides clear information high-impact solution to this awkward problem in the selecting the best possible settings for new
Yarn US Denim Mills. Lahore. Pakistan
about the optimal break draft settings. Even fiber and production of carded ring yarns, including polyester. materials at the first attempt.
draw frame manufacturers are only able to provide It uses a state-of-the-art measuring method to • Correct drafting distribution in the drafting system.
rough guidelines, which means spinners can only tell calculate the best possible break draft setting • Less adjustment and shorter process times.
if their break draft settings are suitable when they automatically – within real production conditions. The • Better basic settings for the machine – which
inspect the finished yarn. method considers all fiber and sliver parameters, as reduces the negative effects of sub-optimal machine
well as the settings on the specific model of draw setting and provides a better, more uniform sliver
Many spinners try to adjust the break draft using the frame and the relevant external boundary conditions. quality.
Coefficient of Variation (CV) value. But while low The user can then choose whether to apply the • Reduction of costs related to quality control.
break drafts often improve sliver evenness, this recommended setting in the software of their • Easy monitoring and adjustment of the machine
approach can open up additional problems (as machine. settings when the quality of the raw material changes.
shown in the graphic below). Setting the break draft • And improvements at later stages in the
too low can reduce yarn strength and elongation. AUTO DRAFT is able to identify the optimal break production process.
And it can also increase the number of imperfections draft setting in less than two minutes. This
and have a negative effect on the running behavior accelerates the process of adjusting the break draft How it works
and efficiency of the machines operating at later and creates meaningful clarity about how to optimize When activated, the AUTO DRAFT function AUTO DRAFT begins calculating the break draft
stages in the spinning process. This means those adjustments. Put very simply: It is faster and continuously changes the break draft from 1.00 to
optimization is only possible in the very long better than everything else that is currently available 1.95, and then measures the draft forces
term, if at all. on the market. within the drafting system.

April/May 2021 April/May 2021

Conclusion takes all relevant factors into consideration. In this way,
The AUTO DRAFT function is a truly game-changing it is enabling spinners to save time and money, while
technology for break draft optimization. It makes it improving quality and making their processes more
possible to adjust the break draft quickly and easily, efficient. It’s a major breakthrough for the break draft.
using an innovative and automatic method that And it’s empowering Truetzschler’s customers
operates within real production conditions – and that worldwide to grab a valuable competitive advantage.