Fiber Bundle Condensing Device Bearing Positioning
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Solution Overview
Problem
Existing fiber bundle condensing devices for spinning machines face issues with the precise positioning of bearings supporting the countershaft due to axial thrust loads, which can lead to bearing dislocation when the load exceeds the frictional force of set screws.
Innovation Solution
A fiber bundle condensing device with a support plate that has an opening smaller than the bearing's outer diameter, restricting the bearing's axial position while allowing rotation, preventing dislocation and ensuring precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a bearing is fixed only with a set screw, then the device complexity is reduced, but the bearing may be dislocated when thrust load exceeds frictional force
Solution Approach 1:
The invention transitions from a one-point fixation method (set screw) to a surface constraint method (opening edge). The opening in the support plate creates a dimensional constraint where the bearing's outer surface contacts the opening's edge, providing axial positioning through a surface rather than a point, thereby preventing dislocation under thrust load without increasing device complexity
2Manufacturing precision
If the opening is smaller than the bearing outer diameter, then the bearing position is restricted precisely, but the bearing cannot be easily installed
Solution Approach 1:
The bearing is preliminarily positioned during assembly by inserting it through the opening from the radial direction. The opening's diameter is designed to be slightly larger than the bearing's outer diameter to facilitate easy insertion, while the opening's edge portion provides axial constraint. This preliminary insertion action allows both easy installation and precise axial positioning without requiring additional fastening operations
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
The solution effectively prevents bearing displacement and ensures precise positioning of the countershaft, allowing for greater thrust loads without additional parts or processing, maintaining original alignment precision.
Implementation Method 1
a suction portion that exerts suction on the fiber bundle
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A fiber bundle condensing device (100) for a spinning machine includes a condensing device (110) that includes a delivery roller pair comprising a delivery top roller (118) and a delivery bottom roller (112) transporting a fiber bundle (F), a suction portion (114) that exerts suction on the fiber bundle (F), and an air-permeable apron (116) that is rotated along the suction portion (114). The fiber bundle condensing device (100) further includes a support plate (120) fixed to a roller stand (10) and supports the condensing device (110), and a countershaft (130) that rotates the delivery bottom roller (112). The support plate 120 has an opening (122) through which the countershaft (130) is inserted. The opening (122) is smaller than the outer diameter of a bearing (140), and the edge portion of the opening (122) restricts the position of the bearing (140) in the axial direction.