Heterogeneous Heald Frame Coupling Latching Element
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Solution Overview
Problem
Existing heald frame couplings are difficult to detach and can be sluggish during assembly, as they often require relative movement in transverse directions and rely on complex locking mechanisms that are not efficient.
Innovation Solution
A heterogeneous latching element is used, composed of different materials or components with varying physical properties, such as tungsten carbide for the clamping surface and softer materials like bronze or graphite for reduced friction, allowing for a more efficient and cost-effective connection mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex locking mechanism with multiple components is used to ensure a secure connection, then the reliability of the connection is improved, but the device complexity increases and the ease of operation deteriorates
Solution Approach 1:
The locking element is divided into functionally distinct zones with different material properties - a hard clamping surface zone for secure engagement and a softer tip zone for easier insertion. This segmentation allows each zone to perform its specific function optimally, resolving the contradiction between secure locking and ease of operation.
Solution Approach 2:
Different regions of the locking element are given different material characteristics - the clamping surface is made hard for reliable engagement while the tip is made softer for easier insertion. This local differentiation of material properties enables the single component to simultaneously provide both ease of operation and connection reliability.
2Ease of manufacture
If a single-material locking element is used, then the manufacturing process is simplified, but the ease of operation and reliability are compromised due to uniform friction characteristics
Solution Approach 1:
The locking element is constructed as a composite material structure with at least two different materials - a hard material (such as steel or tungsten carbide) for the clamping surface and a softer material (such as bronze, brass, or plastic) for the tip. This composite construction resolves the contradiction by providing both the manufacturing feasibility of a single component and the operational benefits of differentiated material properties that reduce friction and enable easier assembly and detachment.
3Ease of manufacture
If homogeneous material is used throughout the locking element, then the manufacturing cost is reduced, but the friction and tensile load problems arise
Solution Approach 1:
The locking element uses a composite material structure combining hard material for the clamping surface (to handle tensile loads and provide secure engagement) and softer material for the tip (to reduce friction during insertion). This composite approach resolves the contradiction between manufacturing cost and performance by maintaining relative manufacturing simplicity while dramatically improving friction and load characteristics through strategic material differentiation.
Solution Approach 2:
The locking element applies local quality by giving different regions different material properties - the clamping surface uses hard material for load bearing while the tip uses softer material for friction reduction. This localized material differentiation enables the component to simultaneously achieve cost-effective manufacturing and superior friction/load performance.
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 heterogeneous latching element improves the ease of detachment and assembly by reducing friction and tensile load, providing a more reliable and cost-effective connection between heald frames and their drives.
Implementation Method 1
In the area of the tip of the latching element, which protrudes furthest in the direction of movement of the shank in the direction of the other coupling element, it is advantageous to add more substances to the sintered material that reduce the friction of the outer surface of the latching element. These substances include bronze components, but also - as far as the sintering process allows - graphite components.
Implementation Method 2
Such a latching element can be produced, for example, using the sintering process. In the area of the clamping surface of the latching element, the concentration of hard-metal sintered components such as tungsten carbide is advantageously particularly high.
Data Source
Figure 1~2
Figure 3~11
Figure 4~7
AI summary
A weaving shaft coupling (1) for connecting a weaving shaft (11) to a shaft drive is described and claimed, with the following features: a) the weaving shaft coupling (1) comprises two coupling elements (2, 3), the first (2) of which can be connected to the weaving shaft (11) and the second (3) to the shaft drive; b) the coupling elements (2, 3) can be brought into a detachable connection by a relative movement to each other, which extends substantially along the direction of movement (z) of the shaft; c) at least one of the two coupling elements (2, 3) has a locking element (4) which extends substantially along the direction of movement (z) of the weaving shaft (11); d) the locking element (4) has a clamping surface (5) which also extends in at least one of the two spatial directions (x, y) extending transversely to the direction of movement (z) of the shaft; e) the other coupling element (2,3) has at least one clamping element (8) for snapping the clamping surface (5). It is considered novel and inventive that f) the at least one snapping element (4) is heterogeneous. Furthermore, a woven shaft 11 is described and claimed, which has a coupling element (2, 3) with such a snapping element (4).