Segmented Warp Knitting Tool Bar With Self-Aligning Projections
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Solution Overview
Problem
The existing knitting tool bars for warp knitting machines require complex alignment of knitting tools, which reduces productivity due to the time-consuming process of tool exchange and positioning, affecting the efficiency of the knitting process.
Innovation Solution
A knitting tool bar design featuring a longitudinal groove and counter-longitudinal projection interaction for precise positioning of segments and tools, combined with a transverse groove and projection system for secure alignment, allowing for automatic loading and reduced material usage, enabling faster operation and improved tool positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional tool bar design is used, then tool exchange is possible, but complex alignment is required reducing productivity
Solution Approach 1:
The tool bar is divided into multiple segments that can be independently positioned and exchanged. Each segment contains specific knitting tools and can be mounted on the bar with pre-defined positioning features, allowing modular replacement without requiring complex alignment of the entire tool bar.
Solution Approach 2:
The segment design incorporates self-aligning features including longitudinal and transverse grooves that automatically guide the segment into its correct position on the bar during mounting. The complementary shapes of projections and recesses enable the segment to self-position without external alignment assistance, eliminating time-consuming manual alignment operations.
2Manufacturing precision
If manual alignment of tools is performed, then precise positioning is achieved, but time-consuming process reduces efficiency
Solution Approach 1:
The segment incorporates self-aligning geometric features including longitudinal grooves and transverse recesses that automatically guide and position the segment correctly on the bar during mounting. The complementary projections and recesses create a self-positioning mechanism that ensures precise tool positioning without requiring manual alignment operations.
Solution Approach 2:
The positioning grooves and recesses are pre-formed during segment manufacturing with precise dimensions and orientations. This preliminary preparation of positioning features ensures that when the segment is mounted on the bar, the correct positioning occurs automatically without requiring subsequent alignment operations.
3Manufacturing precision
If segments are made long for better tool positioning, then positioning accuracy improves, but thermal expansion affects tool positions
Solution Approach 1:
The tool bar is divided into multiple shorter segments instead of one long continuous bar. Each segment can expand or contract independently with temperature changes without affecting the positioning of other segments, as the expansion is absorbed within each individual segment's length rather than propagating through the entire tool bar length.
Data Source
Figure 1~6
AI summary
A knitting tool bar (1) is described, comprising a body (2) having a longitudinal direction (3) and a knitting tool holder attached to a contact surface (5) of the body (2), which has several separate segments. The contact surface (5) has a transverse projection (6) extending transversely to the longitudinal direction (3) for each segment, and each segment has a corresponding transverse projection. The aim is to achieve high productivity with a warp knitting machine having such a knitting tool bar. For this purpose, a longitudinal projection (8) extending in the longitudinal direction (3) is provided in the contact surface (5), wherein at least one segment has a counter-longitudinal projection that interacts with the longitudinal projection (8).