False Twist Texturing Machine Thread Tension Control
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Solution Overview
Problem
Existing false twist texturing machines face challenges in achieving high-quality texturing and uninterrupted thread treatment, particularly during manual bobbin changes, due to the limitations of current delivery mechanisms which can lead to inconsistent thread tension and potential silking in the post-treatment zone.
Innovation Solution
The machine incorporates a combination of loop delivery mechanisms for texturing and pre-treatment, with a clamping delivery mechanism only activated post-treatment and upstream of the winding device, allowing for constant thread tension and uninterrupted operation, and independent motor control for each delivery mechanism to set different tension states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a clamping delivery mechanism is used throughout the entire thread treatment process, then thread tension can be kept constant, but additional external mechanical stress is applied to the filaments during texturing and drawing
Solution Approach 1:
The delivery mechanism is segmented into different types for different zones: loop delivery mechanisms are used in the texturing and drawing zones to avoid mechanical stress, while a clamping delivery mechanism is used only in the post-treatment zone to maintain constant thread tension. This segmentation allows each zone to have the optimal delivery mechanism for its specific requirements.
Solution Approach 2:
Different delivery mechanism types are applied to different local zones of the thread treatment process. The loop delivery mechanism is applied locally in the texturing and drawing zones where gentle handling is needed, while the clamping delivery mechanism is applied locally in the post-treatment zone where tension stability is critical.
2Object-affected harmful factors
If loop delivery mechanisms are used for texturing and drawing, then gentle thread guidance is achieved, but thread tension cannot be kept as constant as with clamping mechanisms
Solution Approach 1:
The delivery system is divided into multiple segments with different functions: loop delivery segments for gentle guidance in texturing/drawing zones, and a clamping delivery segment for tension stability in the post-treatment zone. This segmentation allows both requirements to be satisfied in their respective zones.
3Ease of operation
If manual bobbin changes are performed, then operational flexibility is maintained, but interruptions in thread treatment and potential silking in the post-treatment zone occur
Solution Approach 1:
The clamping delivery mechanism in the post-treatment zone maintains continuous thread guidance and constant tension even during bobbin changes. The clamping element continuously engages with the thread, preventing any interruption in the useful action of thread treatment and eliminating the risk of silking during operational transitions.
Data Source
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AI summary
The machine has a texturing and/or stretching zone formed between two supplying units (3, 9) i.e. enlacement supplying units (15.1, 15.2). An after-treatment zone is formed between one of the two supplying units and a third supplying unit (14) i.e. clamp supplying unit (20), mounted upstream to a winding device (10.1). The three supplying units are driven by separate electric motors (19.1, 19.2), and the clamp unit comprises a drive shaft (21) extended over processing positions. The shaft is connected with the motors, and the enlacement supplying units are formed by driven godets (16.1, 16.2).