False-Twist Texturing Spindle Control for Yarn Threading
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Solution Overview
Problem
In false-twist texturing machines, the inability to individually adjust yarn feeding speed and drawing ratio for each spindle makes it impossible to suitably perform yarn threading, especially when yarn breakage occurs.
Innovation Solution
The machine is equipped with motors, rotation speed adjusters, signal generators, and a control unit that allows for individual control of yarn feeding speed and drawing ratio for each spindle, enabling adjustments for yarn threading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If rollers corresponding to each spindle are attached to a common line shaft, then the structure is simple and rollers are simultaneously driven, but it is impossible to individually change the yarn feeding speed and drawing ratio of each spindle
Solution Approach 1:
The patent divides the common line shaft into separate drive systems for each spindle. Each spindle is equipped with its own motor and rotation speed adjuster, allowing independent control of yarn feeding speed and drawing ratio for each spindle while maintaining structural organization through modular segmentation.
Solution Approach 2:
The patent transforms the static common line shaft system into a dynamic system where each spindle can independently adjust its rotation speed. The control unit enables real-time modification of yarn feeding speed and drawing ratio for individual spindles based on operational requirements such as yarn breakage detection or threading operations.
2Device complexity
If yarn feeding speed and drawing ratio are fixed for all spindles, then the control system is simple, but it is impossible to suitably perform yarn threading when yarn breakage occurs
Solution Approach 1:
The patent incorporates a control unit that receives signals from sensors detecting yarn breakage or threading status. Based on this feedback, the control unit automatically adjusts the yarn feeding speed and drawing ratio of the affected spindle, enabling the system to adapt to operational conditions and maintain reliability during threading operations.
Solution Approach 2:
The patent enables dynamic modification of operational parameters (yarn feeding speed and drawing ratio) for individual spindles based on detected conditions. When yarn breakage or threading is detected, the control unit changes these parameters to suitable values, allowing the system to maintain reliability without complex overall reconfiguration.
3Adaptability or versatility
If individual motor control is provided for each yarn supplying device, then individual yarn feeding speed adjustment is possible, but the device complexity increases
Solution Approach 1:
The patent implements a universal control unit that manages multiple spindles through a standardized interface. Each spindle uses the same motor and rotation speed adjuster configuration, allowing individual control capability while reducing overall complexity through standardized, multi-functional control architecture.
Data Source
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AI summary
Suitable yarn threading is realized in a false-twist texturing machine having plural spindles. In a false-twist texturing machine having plural spindles each including a false-twisting device and a first feed roller and a second feed roller provided to oppose each other over the false-twisting device, each spindle is provided with: a first motor 11a and a second motor 16a which are configured to drive the first feed roller and the second feed roller, respectively; inverters 11b and 16b which are able to adjust rotation speeds of the first motor 11a and the second motor 16a, respectively; and an operation unit 24 which is able to generate a signal. Upon receiving a signal generated by the operation unit 24, a control unit 40 controls the inverters 11b and 16b of the spindle where the received signal is generated, and sets the yarn feeding speed of the first feed roller and the second feed roller at a yarn threading speed that is different from a production speed.