Adjustable Crank Traverse Mechanism for Yarn Winding
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Solution Overview
Problem
Existing yarn winding machines face challenges in saving space while effectively changing traverse width to prevent the ear height phenomenon during yarn winding, which can lead to poor unwinding and is influenced by motor performance.
Innovation Solution
The yarn winding machine incorporates a traverse mechanism with a drive unit, crank portion, and rotary reciprocating conversion portion, allowing for adjustable power transmission distances and eliminating the need for motor rotation switching, thereby enabling precise control of traverse width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the distance between the roller and the traverse device is increased to change the traverse width, then the traverse width can be adjusted to suppress ear height phenomenon, but the machine size increases and occupies more installation space
Solution Approach 1:
The patent applies dynamics by making the power transmission distance adjustable rather than fixed. The distance between the first and second power transmission portions can be dynamically changed during operation, allowing the traverse width to be adjusted without physically moving the traverse device or increasing the overall machine footprint. This resolves the contradiction by enabling precision control while maintaining a compact machine size.
Solution Approach 2:
The patent changes the parameter of power transmission distance between the crank portion components. By adjusting this distance parameter, the traverse width is controlled to suppress ear height phenomenon. This allows precise traverse width control through parameter adjustment rather than through physical reconfiguration that would increase machine size.
2Productivity
If the motor switching frequency is increased to handle narrow traverse width or fast winding speed, then the traverse cycle can be shortened, but the motor performance becomes insufficient and cannot effectively suppress ear height phenomenon
Solution Approach 1:
The patent applies dynamics by enabling continuous adjustment of the power transmission distance, which directly controls the traverse width. This dynamic adjustment capability allows the system to adapt to different winding speeds and traverse widths without relying on high-frequency motor switching. The traverse cycle control reliability is maintained because the system can optimize the power transmission distance for each operating condition rather than relying solely on motor performance.
3Adaptability or versatility
If the belt type traverse device uses motor rotation switching to change traverse width, then the traverse width can be adjusted, but the system becomes dependent on motor performance and cannot effectively suppress ear height phenomenon under high speed conditions
Solution Approach 1:
The patent changes the parameter of power transmission distance within the crank portion to control traverse width. This approach provides adaptability for different traverse width requirements while maintaining reliability because the control is achieved through mechanical parameter adjustment rather than relying on motor switching performance. The system can effectively suppress ear height phenomenon across various operating conditions including high speed winding.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for efficient space-saving design, flexible traverse width adjustment, and effective suppression of the ear height phenomenon, ensuring consistent yarn unwinding performance regardless of motor performance.
Implementation Method 1
a crank portion that converts a rotation of a drive shaft of the drive unit into a rotation of a circular orbit
Implementation Method 2
a rotary reciprocating conversion portion that converts the rotation of a circular orbit of the crank portion into a reciprocating motion
Data Source
Figure 1
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AI summary
A traverse mechanism 4 of a yarn winding machine 1 includes a drive motor 53 which generates a rotation of a drive shaft 531, a crank disc 52 which converts the rotation of the drive shaft 531 of the drive motor 53 into a rotation of a circular orbit, and a reciprocating double slider crank portion 51 which converts the rotation of the circular orbit of the crank disc 52 into a reciprocating motion, the crank disc 52 includes a disc portion 521 which rotates while being connected to the drive shaft 531 and transmits power of the drive motor 53 and a crank pin 523 which transmits power to the reciprocating double slider crank portion 51, a distance between the disc portion 521 and the crank pin 523 is changeable, and the reciprocating double slider crank portion 51 includes a traverse guide 516 locking a yarn Y.