Cable Drum Threading for Tangle-Free Conduit Retraction
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Solution Overview
Problem
Existing cable feeding devices face challenges in orderly and careful storage of pulling means, such as fish tapes or cables, which can lead to tangling, knotting, and inefficient winding, potentially resulting in faulty operations or damage.
Innovation Solution
The proposed cable feeding device incorporates a threading unit with a movably supported threading element, allowing for perpendicular movement to facilitate orderly winding onto a drum. This design includes a braking mechanism and pre-tensioning mechanism to ensure tight and even winding, reducing the risk of tangling and knotting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pulling means is wound onto the pulling means drum without a movable threading element, then the winding process is simpler, but the pulling means becomes tangled and knotted, resulting in faulty operating states
Solution Approach 1:
The threading element is designed to be movable along an axis perpendicular to the feeding direction, allowing it to dynamically adjust its position during the winding process. This dynamic capability enables the threading element to guide the pulling means onto different sections of the drum width, ensuring orderly winding and preventing tangling while maintaining operational reliability.
2Productivity
If the pulling means is wound loosely without tensioning, then the risk of damage is reduced, but the winding occupies more space and is less efficient
Solution Approach 1:
The threading element performs preliminary guidance and positioning of the pulling means before it is fully wound onto the drum. By pre-positioning the pulling means in an orderly manner across the drum width, the system achieves space-efficient winding without applying excessive tension that could cause damage.
3Productivity
If the pulling means is wound unevenly on the drum, then the winding process is faster, but subsequent unwinding becomes error-prone and inefficient
Solution Approach 1:
The movable threading element enables local adjustment of the winding pattern across different sections of the drum width. By distributing the pulling means evenly across the entire drum width through localized guidance at different positions, the system achieves both efficient winding and reliable unwinding operations.
4Volume of stationary object
If a fixed threading element is used, then the device structure is simpler, but the pulling means cannot be wound evenly over the drum width, leading to space waste
Solution Approach 1:
The threading element is introduced with mobility along an axis perpendicular to the feeding direction, adding a dimensional degree of freedom to the winding process. This enables the threading element to access different lateral positions across the drum width, achieving space-efficient winding patterns that maximize drum utilization.
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 solution enables a more orderly and efficient storage and winding of pulling means, reducing the risk of damage and ensuring error-free subsequent unwinding, while also allowing for space-saving storage due to even distribution over the drum width.
Implementation Method 1
The threading element 18 is supported in such a manner that it can be moved along an axis 20, which is at least substantially perpendicular to a feeding direction 22 of movement of the pulling means 10 into the pulling means drum 16
Implementation Method 2
The threading unit 14 is configured to tension the pulling means 10 when the pulling means 10 is fed into the pulling means storage unit 12, in particular when the pulling means 10 is wound onto the pulling means drum 16, for example, by braking
Data Source
AI summary
A cable feeding device at least configured for feeding of cables into conduits a pulling device, having at least one pulling device storage unit, in particular, a pulling device drum, for receiving the pulling device, and having a threading unit guiding the pulling device, which, when the pulling device is drawn into the pulling device storage unit, tensions the pulling device, in particular, by winding the pulling device onto the pulling device drum, for example, by braking or pre-tensioning the pulling device drawn toward the pulling device drum by feeding and/or winding. At least one threading element of the threading unit is movably supported along an axis that extends at least substantially perpendicular to a feeding direction of movement of the pulling device into the pulling device storage unit.