Round Sling Production via Helical Winding on Rotating Strand
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Solution Overview
Problem
Existing methods for producing textile round slings are limited in efficiency and flexibility, often requiring a covering and not allowing for continuous production without it, and lack the ability to rotate the sling strand about its longitudinal axis during deflection, which can affect the structural integrity and usability of the final product.
Innovation Solution
A method and device for producing a round sling that involves arranging an endless initial strand along an annularly closed circulation path, rotating it while continuously feeding a winding strand helically onto the initial strand, and securing the second end of the winding strand to form a loop strand, allowing for continuous rotation of the loop strand about its longitudinal axis, even during deflection, without the need for a covering, and enabling the use of different lay angles and materials for enhanced structural properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the initial strand is continuously rotated about its longitudinal axis during formation, then the rotational neutrality and structural integrity of the round sling is improved, but the device complexity increases due to the need for deflection devices that can rotate the strand
Solution Approach 1:
The deflection devices are designed to rotate the initial strand about its longitudinal axis dynamically during the formation process. The deflection devices can be rotated in a direction concurrent with the movement of the initial strand, enabling continuous rotation and achieving rotational neutrality without requiring complex additional mechanisms
Solution Approach 2:
The deflection devices act as intermediaries between the initial strand and the winding strand. These devices temporarily hold and rotate the initial strand, allowing the winding strand to be continuously fed and wound helically while maintaining rotational neutrality of the forming round sling
2Productivity
If the winding strand is continuously fed to wind helically onto the rotating initial strand, then productivity is improved through continuous production, but the manufacturing precision requirements increase to maintain constant lay angle and helical structure
Solution Approach 1:
The process enables continuous production by continuously feeding the winding strand to the rotating initial strand throughout the entire formation process. The winding strand is fed continuously from a supply roll, and the initial strand is continuously rotated and moved along the circulation path, eliminating interruptions and achieving high productivity
Solution Approach 2:
The manufacturing process controls the lay angle parameter by adjusting the rotation speed of the initial strand and the feeding speed of the winding strand. The deflection devices are positioned and rotated to maintain a constant lay angle between the winding strand and the longitudinal axis, ensuring precise helical structure formation
3Strength
If deflection devices are used to rotate the loop strand about its longitudinal axis, then the structural integrity is improved, but the device complexity and space requirements increase
Solution Approach 1:
The deflection devices are arranged in a circulation path that forms a closed loop, creating a spherical or circular configuration. This curved path allows the initial strand to be continuously rotated about its longitudinal axis while maintaining a compact structure. The deflection devices are positioned at specific points along this curved path to provide the necessary rotation
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 approach enables the continuous production of a rotationally neutral round sling with improved structural strength, allowing it to be used without a covering in many applications, and provides flexibility in manufacturing phases and material usage, enhancing its rotational neutrality and strength.
Implementation Method 1
the winding strand is wound helically onto the rotating and forward-moving initial strand, and a loop strand is formed that grows with each revolution of the initial strand by one turn of the winding strand
Implementation Method 2
The initial strand and the developing loop strand are, in a sense, subjected to a constant and continuous twisting motion at every point
Implementation Method 3
The rotation about the longitudinal axis is achieved by a rolling motion, whereby the loop strand is rolled around its longitudinal axis within the deflection zones
Implementation Method 4
The endless initial strand and/or the loop strand can be held under a predetermined longitudinal or circumferential tension
Data Source
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AI summary
Method for producing a round loop (80) from textile fibers, comprising the steps of: arranging an endless initial strand having a predetermined circumferential length along a longitudinal axis (16) along an annular closed circulation path, wherein the initial strand is connected to a first end of a winding strand (81); rotating the initial strand in a working direction along its longitudinal axis (16) and the circulation path; and simultaneously rotating the initial strand in a predetermined direction of rotation about its longitudinal axis (16) by a rolling motion on a deflecting means (2, 10, 30, 50); continuously feeding the winding strand (81) at a stationary feeding point of the circulation path, wherein the winding strand (81) is wound helically onto the rotating and forward-moving initial strand, and a loop strand (14) is formed which grows with each revolution of the initial strand by one turn of the winding strand (81). becomes,until a loop strand (14) with a predetermined number of helically wound turns around the longitudinal axis (16) is reached, and securing a second end (82) of the winding strand (81) to the loop strand (14), thereby forming a round loop (80). Various devices for carrying out the method with deflection means (2, 10, 30, 50) are also disclosed.