Yarn Feeder Bearing Layout for Synchronized Wheel Operation
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Solution Overview
Problem
Existing yarn feeding devices for textile machines suffer from synchronization issues due to large distances between bearing units, leading to high bearing loads and shortened life cycles.
Innovation Solution
A yarn feeding device design with a support unit featuring a forked support arm and housing that optimally spaces two bearing units, with the upper bearing unit located above the pulleys and drive mechanism, and a lower bearing unit positioned at the bottom of the shaft in front of the yarn feed wheel, using plastic materials for reduced weight and improved handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the bearing units are positioned far apart to accommodate the drive mechanism, then the drive mechanism has sufficient space, but the synchronization of the yarn feed wheel is disrupted
Solution Approach 1:
The patent positions bearing units at both ends of the shaft in the vertical dimension, creating a compact arrangement that accommodates the drive mechanism in the intermediate space while maintaining proper spacing for synchronization. This dimensional arrangement resolves the contradiction by optimizing space utilization without compromising reliability.
2Reliability
If the bearing units are positioned close together to maintain synchronization, then the yarn feed wheel synchronization is maintained, but the bearing loads increase and life cycle shortens
Solution Approach 1:
By arranging bearing units at both ends of the shaft vertically, the patent optimizes the distribution of mechanical loads while maintaining synchronization. This dimensional positioning reduces bearing loads compared to horizontal arrangements, extending bearing life cycle while preserving synchronization reliability.
3Strength
If traditional housing materials are used, then structural strength is sufficient, but the weight is high and handling is difficult
Solution Approach 1:
The patent employs plastic material for the housing, representing a composite material approach that achieves sufficient structural strength while dramatically reducing weight. This enables easier handling and installation, particularly for overhead mounting applications, without compromising the structural integrity required for supporting the shaft and bearing units.
Data Source
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Figure 5~6
AI summary
A yarn feeder (1) for supplying yarn to a textile machine is equipped with a support unit (2) with a mounting clamp (3), a support arm (12) with an upper leg (15) and a lower leg (16), and a housing. A space (Z) is formed between the legs (15, 16). The yarn feeder (1) is provided with a shaft that is rotatably mounted on the support unit (2) and, in use, extends vertically through the legs (15, 16) of the support arm (12), the space (Z), and the housing. A bearing unit (K1) for the shaft (5) is arranged in the upper leg (15) of the support arm (12). At least one pulley (6) and a clutch with a handle (7) are arranged on the shaft (5) in the space (Z). A yarn feed wheel (4) is arranged at the lower end of the shaft (5). A second bearing unit (K2) for the shaft (5) is arranged in the housing at a lower end of the shaft (5) in front of the thread delivery wheel (4).