Multi-Core Cable Sheath Pull-Out With Controlled Untwisting
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Solution Overview
Problem
Conventional methods for pulling out the sheath of a multi-core cable fail to adequately correct kinks in the electric wires, leading to suboptimal processing of the electric wires.
Innovation Solution
A multi-core cable untwisting device that includes a retention member, a gripping member, a pull-out device, and a rotating device, controlled by a control device to perform alternating first and second controls, where the first control minimizes rotation and the second control maximizes rotation per unit travel distance to effectively untwist the sheath while correcting kinks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sheath is pulled out at constant speed and rotated at constant rotational speed, then the pulling process is simple and stable, but the kinks in the electric wires are not corrected sufficiently
Solution Approach 1:
The patent applies dynamics by transitioning from constant speed/rotational speed control to variable speed control. The pull-out speed and rotational speed are dynamically adjusted during the sheath removal process based on real-time detection of wire twist states, enabling effective kink correction while maintaining process stability
Solution Approach 2:
The patent implements feedback control through detection means that monitor the twist state of electric wires during sheath pull-out. The control device uses this feedback information to adjust the pull-out speed and rotational speed in real-time, ensuring optimal kink correction effectiveness
2Reliability
If the amount of rotation per unit travel distance is increased to correct kinks, then kink correction improves, but the sheath may rotate excessively creating reverse direction kinks
Solution Approach 1:
The detection means continuously monitors the twist state of electric wires during sheath pull-out. When the wires reach a straight state or begin to show signs of reverse twisting, the control device adjusts or stops the rotation, preventing excessive rotation and reverse direction kinks
Solution Approach 2:
The patent applies partial action by providing rotation only when and where needed during the sheath pull-out process. The rotational amount is precisely controlled based on real-time wire twist detection, avoiding both insufficient rotation (which fails to correct kinks) and excessive rotation (which creates reverse kinks)
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 device effectively corrects kinks in electric wires by alternating control methods, ensuring the sheath is pulled out without excessive rotation, thereby maintaining wire quality and facilitating efficient subsequent processing.
Implementation Method 1
a rotating device configured to relatively rotate the tip portion of the sheath that is gripped by the gripping member and the non-tip portion of the sheath
Implementation Method 2
a pull-out device configured to pull out the tip portion of the sheath by moving at least one of the gripping member and the retention member so that the gripping member moves away from the retention member
Data Source
AI summary
A multi-core cable untwisting device for simultaneously pulling out a sheath while correcting kinks in electric wires, wherein an object is to be able to correct kinks more desirably than with conventional techniques. A multi-core cable untwisting device (1) includes: a retention clamp (11) configured to retain a non-tip portion (5B) of a sheath (5); a gripping clamp (26) configured to grip a sheath tip portion (5A); a pull-out device (30) configured to pull out the sheath tip portion (5A) by moving the gripping clamp (26); a rotating device (40) configured to rotate the gripping clamp (26); and a control device (50) configured to control the pull-out device (30) and the rotating device (40). The control device (50) is configured to perform a first control of pulling out the sheath tip portion (5A) without rotating the sheath tip portion (5A), and a second control of pulling out the sheath tip portion (5A) while rotating the sheath tip portion (5A).