Movable Guiding Mandrel for Uniform Cable Bundle Twisting
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Solution Overview
Problem
Conventional devices for twisting single cables to form cable bundles often interfere with the cables due to the guiding mandrel, which can lead to uneven lay length and torsion of the cables during the twisting process.
Innovation Solution
A device comprising single rotating units, a twisting unit, and a guiding apparatus with a movable guiding mandrel that can be pivoted into the twisting axis without additional actuators, allowing for controlled separation of cables and maintaining a constant lay length without torsioning the cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a guiding mandrel is used to separate single cables during twisting, then the lay length can be kept constant, but the guiding mandrel can lead to interference with the single cables
Solution Approach 1:
The guiding mandrel is made movable rather than fixed, allowing it to adapt its position dynamically during the twisting process. The mandrel can move axially to maintain optimal separation between cables while avoiding interference with the twisting operation, thus preserving both lay length uniformity and cable integrity.
Solution Approach 2:
The guiding function is divided into multiple mandrels that can independently adjust their positions. This segmentation allows each mandrel to handle individual cable separation without interfering with others, enabling precise control over cable spacing while avoiding torsion during the twisting process.
2Stability of the object's composition
If the guiding mandrel is positioned before the start of the twisting process, then the single cables can be separated, but the guiding mandrel may interfere with the single cables during twisting
Solution Approach 1:
The guiding mandrel system transitions from a static pre-positioned configuration to a dynamic system that adjusts during twisting. The mandrels are equipped with movement mechanisms that allow them to adapt their positions in real-time, maintaining cable separation while avoiding interference with the twisting operation.
Solution Approach 2:
The mandrels are pre-positioned to establish initial cable separation, but this preliminary action is followed by continuous adjustment during the twisting process. The system performs preliminary cable organization and then adapts to the twisting motion, preventing interference while maintaining separation.
3Productivity
If conventional twisting devices are used, then the cable pair can be twisted, but the single cables are torsioned, i.e., rotate about their own single cable axis
Solution Approach 1:
The guiding mandrels are designed to move dynamically during the twisting process, adjusting their positions to prevent the single cables from rotating about their own axes. This dynamic guidance system maintains cable alignment while allowing the twisting operation to proceed efficiently.
Solution Approach 2:
The guiding mandrels act as intermediary elements between the cable pair and the twisting unit. They mediate the twisting process by providing external guidance that prevents unwanted cable torsion while allowing the intended twisting to occur, thus protecting the cables from harmful self-rotation.
Data Source
AI summary
A device and a method twist single cables about a twisting axis to form a cable bundle along an extension axis. The device includes mutually spaced single rotating units for separately holding cable ends at one end of the single cables; a twisting unit for holding and twisting cable ends at the other end; and a guiding apparatus, to which is fastened a guiding mandrel for separating the single cables, at least in some regions, during a twisting process by the twisting unit, in a transition region from an untwisted region to a twisted region. The guiding apparatus further includes: a movement element for moving the guiding mandrel out of an initial position into a moved-in position, in which the guiding mandrel is moved into the twisting axis; and a locking element for holding the guiding mandrel in the position moved in out of the twisting axis.