Flat Knitting Machine Movable Sinker Bed for Needle Wear Reduction
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Solution Overview
Problem
Existing flat knitting machines suffer from damage and unreliable operation due to the unchangeable position of stripping devices, which leads to premature wear of needle latches and inefficient stitch stripping.
Innovation Solution
The stripping sinkers are arranged in a movable sinker bed, allowing for controlled movement between a stripping position and an inactive position, enabling adjustable timing of stitch stripping and reducing pressure on needles, thus preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the stripping device is fixed at an unchangeable distance from the needle bed, then the device structure is simple, but the position in the longitudinal direction of the needles cannot be changed, leading to heavy loading of needle latches and damage
Solution Approach 1:
The stripping device is transformed from a fixed structure to a movable one, allowing dynamic adjustment of its position relative to the needle bed in the longitudinal direction. This enables the stripping fingers to be positioned optimally during operation, reducing excessive loading on needle latches while maintaining structural feasibility through guided movement mechanisms.
2Ease of operation
If the stripping fingers rest on the needles with pressure, then the stitching control is improved, but the needle latches are heavily loaded and damaged
Solution Approach 1:
The stripping fingers are designed to apply pressure locally and temporarily only when needed for stitch control, rather than maintaining continuous pressure on the needles. The fingers can be moved into contact with the needles during the stripping phase and retracted during other phases, providing localized action where needed while preserving needle latch integrity.
3Device complexity
If the stripping device position is fixed, then the device structure is simple, but the point in time of stitch contact and stripping cannot be influenced
Solution Approach 1:
The stripping device incorporates movable components that allow adjustment of the timing of stitch contact and stripping by changing the longitudinal position of the stripping fingers relative to the needle bed. This dynamic positioning capability enables optimization of the stripping process timing without requiring a completely fixed structure.
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
The flat bed knitting machine has multiple needles (2), where each needle is assigned to stripping hooks (1). The stripping hooks include a stitch by a rear movement of the needle over a closed needle hook (21). The stitch is placed behind a needle guide (22) at a needle shaft (23) during a driving movement of the needle. The stripping hooks are arranged in a movably controlled manner. The stripping hooks are arranged in a hook bed (201). The hook bed is arranged above a needle bed, in which the needles are arranged.