Compensating Weft Brake Device Snap-Action Yarn Guide Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing compensating weft brake devices for textile applications are complicated by the use of additional locking elements, which can deteriorate and increase inertia, reducing the device's ability to react to yarn tension variations.
Innovation Solution
The use of snap-action engagement means with elastically yielding contoured seats made of plastic material to retain yarn-guide rings, providing a simple, light, and reliable fixing system that maintains stability and precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional locking elements (elastic straps, pins, contoured locking elements) are used to fix yarn-guide rings, then the fixing reliability is improved, but the device complexity increases and the arm inertia increases
Solution Approach 1:
The locking function is merged into the contoured seat structure itself. The contoured seat integrates both the retention function and the locking function in a single element, eliminating the need for separate locking pins or straps. The snap-action mechanism is built into the contoured seat's geometry, allowing the yarn-guide ring to be securely locked through the elastic engagement of the contoured structure.
Solution Approach 2:
The locking function is extracted from separate locking elements and incorporated into the contoured seat structure. By removing the need for distinct locking components and embedding the locking mechanism within the contoured seat itself, the invention reduces the number of parts while maintaining securing reliability.
2Reliability
If additional locking elements (elastic straps, pins, contoured locking elements) are used to fix yarn-guide rings, then the fixing reliability is improved, but the arm inertia increases
Solution Approach 1:
The locking function is merged into the contoured seat structure itself. The contoured seat integrates both the retention function and the locking function in a single element, eliminating the need for separate locking pins or straps. The snap-action mechanism is built into the contoured seat's geometry, allowing the yarn-guide ring to be securely locked through the elastic engagement of the contoured structure.
Solution Approach 2:
The locking function is extracted from separate locking elements and incorporated into the contoured seat structure. By removing the need for distinct locking components and embedding the locking mechanism within the contoured seat itself, the invention reduces the number of parts while maintaining securing reliability.
3Device complexity
If elastic straps are used to fix yarn-guide rings, then the fixing is simple, but the elastic straps can deteriorate over time
Solution Approach 1:
The invention replaces deteriorating elastic straps with a durable contoured seat structure that provides permanent retention. The contoured seat is designed to maintain its locking capability throughout the device's service life without degrading like elastic materials would.
Solution Approach 2:
The contoured seat is made of elastomeric material that combines the benefits of elasticity (for simple insertion and snap-action locking) with durability (resistance to deterioration). The elastomeric material provides both the simplicity of elastic straps and the long-term reliability needed to prevent deterioration issues.
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 enhances the reliability and practicality of the compensating weft brake device by eliminating the need for additional locking elements, maintaining simplicity and lightness while effectively damping yarn tension peaks.
Implementation Method 1
snap-action engagement means comprising an elastically yielding contoured seat made of an elastomeric material
Implementation Method 2
pushed toward a splayed configuration by a spring
Implementation Method 3
the function of which is to dampen and compensate the variations in tension on the yarn
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A compensating weft broke device for textile applications, which comprises a body (30) that supports a first yarn-guide ring (50), and two articulated arms (32, 34) are kept elastically tensed in a widened configuration and support respective rows of second yarn-guide rings (52, 54); the first yarn-guide ring (50) and the second yarn-guide rings (52, 54) are retained in corresponding contoured seats (56, 58) of the body (30) and of the articulated arms (32, 34) by way of snap-action engagement means (50c, 30t, 52c, 52d, 58t1, 58t2).