Fibre thread stretching unit with additive supply
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods of applying additives in air-jet spinning machines lead to clogging of spinneret components, reduced yarn quality, and high maintenance and production costs due to excess additive deposits.
Innovation Solution
A fiber ribbon drawing unit with integrated additive supply devices applies the additive to the fiber ribbon in the spinning preparation stage before processing, reducing excess additive introduction and simplifying the spinning machine design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additive is applied in the air-jet nozzle area, then polymer residue accumulation is prevented, but spinneret components become clogged and cleaning requirements increase
Solution Approach 1:
The additive is applied to the fiber sliver before it enters the spinning nozzle, during the drafting stage. This preliminary application allows the additive to be distributed on the fiber surface before spinning, preventing polymer residue accumulation without exposing the spinneret components to excess additive that would cause clogging.
Solution Approach 2:
The additive application process is separated from the spinning process. Instead of applying additive directly in the spinning nozzle area, the system uses a separate drafting unit with additive application means, dividing the overall process into distinct stages: additive application during drafting, then clean spinning without direct additive exposure.
2Reliability
If additive is applied to prevent polymer residue accumulation, then yarn quality is maintained, but production costs and maintenance requirements increase
Solution Approach 1:
The drafting unit serves dual functions: it both drafts the fiber sliver to the required linear density and applies the additive to prevent polymer residue accumulation. By combining these functions in one unit rather than adding a separate additive application system, the overall device complexity is reduced while maintaining yarn quality.
3Reliability
If additive is applied in the spinning area, then fiber fragments accumulation is prevented, but cleaning time and costs increase
Solution Approach 1:
The additive is applied in advance during the drafting stage, before the fiber enters the spinning area. This preliminary action ensures that the fiber surface is already protected against fiber fragment accumulation during spinning, eliminating the need for frequent cleaning of spinning components and reducing maintenance time.
4Reliability
If multiple spinning units are equipped with additive feed, then each unit prevents accumulation, but production costs and maintenance requirements increase
Solution Approach 1:
The additive application function is extracted from the spinning units and consolidated in the drafting unit. Instead of each spinning unit having its own additive feed system, the additive is applied once during drafting, eliminating the need for multiple additive supply systems across numerous spinning units and significantly reducing production costs.
Data Source
Figure 1
AI summary
The invention relates to a fiber sliver drawing unit for a spinning preparation machine, a corresponding spinning preparation machine, a storage device for temporarily storing a defined quantity of fiber sliver, and a method for applying an additive to a fiber sliver intended for further processing in a spinning machine. The aim is to provide a simpler, more cost-effective, and lower-maintenance method of additive supply, thereby particularly improving the spinning station or...To make the spinning machine less frequently needing cleaning and generally cheaper to manufacture and operate, it is provided that a fiber strip drawing unit according to the invention for a spinning preparation machine has a fiber strip inlet for receiving a fiber strip, at least one drawing and warping field in the transport direction of the fiber strip limited by a pair of rollers for stretching the received fiber strip, and a fiber strip outlet for directing the stretched fiber strip towards a subsequent fiber strip processing device, wherein an additive supply device for applying an additive to the fiber strip is arranged in an area enclosed by the fiber strip inlet and the fiber strip outlet.