Curved Comb Element With Variable Angle For Cotton Fiber Combing
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Solution Overview
Problem
Existing comb elements for cotton fiber combing machines face a trade-off between achieving a high combing effect and ensuring easy cleaning of the spaces between teeth, as reducing interdental space size enhances combing but complicates accessibility and fiber removal.
Innovation Solution
A comb element with a curved foot part and radially extending teeth, featuring a combing angle of at least 15° between tooth edges, allowing deep fiber penetration and preventing fibers from flowing past at high combing speeds, while allowing for adjustable combing angles to optimize both combing effect and cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the size of the interdental space is reduced to increase combing effect, then the combing effect on fibers is improved, but the accessibility of the interdental space is reduced making cleaning more difficult
Solution Approach 1:
The patent applies local quality by creating different interdental space configurations at different locations along the comb element. The first interdental space has a smaller opening size for effective combing, while the second interdental space has a larger opening size for easy cleaning. This local differentiation allows each region to optimize for its specific function - combing or cleaning - without compromising the other.
2Productivity
If the combing angle is increased to improve combing effect at high speeds, then fiber penetration into interdental spaces is improved, but the requirements for combing effect and cleaning possibility increase
Solution Approach 1:
The patent applies dynamics by making the combing angle variable rather than constant. The combing angle increases in at least sections in the radial direction, allowing the comb element to adapt to different operating conditions. This dynamic adjustment enables effective fiber penetration and combing at high speeds while maintaining cleaning capability through the variable angle configuration.
Data Source
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AI summary
The invention relates to a comb element for a comb segment of a comb roller rotating about a rotary axis in a textile machine for combing cotton fibers, comprising a foot part (8) having a lateral surface (10) curved along a surface line (9), a plurality of teeth (7, 12; 7a, 12a; 7b, 12b) extending away from the lateral surface (10) in the radial direction (11) relative to the rotary axis (3) and disposed one after the other along the surface line (9), and a plurality of intermediate tooth spaces (18; 18b) each disposed between two adjacent teeth (7, 12; 7a, 12a; 7b, 12b), each allowing the passage of fibers to be combed in a direction of passage of the fibers (24) at a radial penetration depth (E), wherein each tooth (7, 12; 7a, 12a; 7b, 12b) comprises four tooth edges (20, 21, 22, 23; 20a, 21a, 22a, 23a), wherein a theoretical connection line in the intermediate tooth space (18; 18b) is drawn between a tooth edge (23; 23a) of a first tooth (7; 7a; 7b) bounding the intermediate tooth space (18; 18a), said edge being in the front along the surface line (9) and in the rear in the direction of passage of the fibers (24), and a tooth edge (20; 20a) of a second tooth (12; 12a; 12b) bounding the intermediate tooth space (18; 18b) in the rear along the surface line (9) and in the front in the direction of passage of the fibers (24), and wherein the surface line (9) and the connection line (24) form a comb angle (a) of at least 15°, and the comb angle (a) increases at least in segments in the radial direction (11).