Flexible Arch Adjustment in Revolving Flat Card
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Solution Overview
Problem
Existing revolving flat card systems require significant force and jerky movements to achieve fine adjustments of the carding gap, and they fail to compensate for thermal expansion of the drum without repositioning the flexible sheet, leading to inefficiencies and inconsistencies in carding quality.
Innovation Solution
A flexible sheet is supported by a drum with at least three eccentrically mounted bolts, connected via a lever to an adjustment device that allows for precise radial displacement of the flexible bend relative to the drum axis, enabling fine adjustments without moving the sheet and compensating for thermal expansion through a temperature compensation sleeve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the flexible sheet is moved in the direction of drum rotation to achieve fine adjustment of the carding gap, then the carding gap can be adjusted, but a considerable expenditure of force is required and the adjustment can only be carried out in jerks
Solution Approach 1:
The invention transforms the adjustment mechanism from linear movement in the direction of drum rotation to radial movement perpendicular to the drum surface. By moving the flexible sheet radially outward or inward at the bearing points, the carding gap can be adjusted with minimal force and smooth continuous motion, eliminating the jerky adjustments and high force requirements of the previous method.
Solution Approach 2:
The invention introduces adjustable bearing points as intermediary elements between the flexible sheet and the drum support structure. These bearing points can be independently adjusted radially, allowing precise control of the flexible sheet position without requiring direct force application to move the entire sheet in the direction of rotation.
2Manufacturing precision
If the flexible sheet position is adjusted to compensate for thermal expansion of the drum, then the carding gap can be maintained, but manual readjustment is required
Solution Approach 1:
The invention makes the bearing points radially adjustable, allowing the flexible sheet position to be modified in response to thermal expansion of the drum. This parameter change capability enables the carding gap to be maintained consistent despite temperature-induced drum expansion, eliminating the need for time-consuming manual readjustment procedures.
3Manufacturing precision
If adjusting screws are used to move the flexible arch surface concentrically, then the carding gap can be adjusted, but the setting accuracy depends on the design of the setting screws
Solution Approach 1:
The invention divides the flexible sheet support into multiple independent bearing points (at least three), each with its own adjustment mechanism. This segmentation allows localized adjustment of the flexible sheet position without requiring complex overall repositioning mechanisms, improving setting accuracy while managing device complexity through modular adjustment units.
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 solution allows for precise and efficient fine adjustment of the carding gap without changing the flexible sheet's position, maintaining consistent carding quality and eliminating the need for manual readjustment due to thermal expansion, thereby reducing operational effort and ensuring consistent performance.
Implementation Method 1
compensating for thermal expansion through a temperature compensation sleeve
Data Source
Figure 1~2
Figure 3~4
AI summary
The bearing device comprises three bearings (20) with an eccentrically mounted bolt (21), and a flexible sheet (7), which is held at each bearing to the eccentrically mounted bolt. The rotary motion (22) of the bolt of the flexible sheet is displaced radial to the drum axis. An adjusting unit (23) is provided, which is spaced from the bolt. The adjusting unit is connected with the bolt at an articulation point (31) by a lever (24). An independent claim is also included for a revolving flat card comprises a drum.