Rotary Cable Stripping Head for Precise Sheath Removal
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Solution Overview
Problem
Existing cable stripping devices are complex and inefficient, particularly in automated processes, often damaging cable components due to wide cutting edges and deep cuts, leading to increased processing time and reject rates, especially in high-volume automotive production where high-voltage cables with non-ideal geometries are involved.
Innovation Solution
A device with a rotary head featuring a cutter and counter holder aligned on a central axis, allowing for precise radial incisions and simultaneous engagement of a pull-off tool, reducing cutting depth and preventing damage, while enabling efficient stripping of cable components, including sheaths and insulations, with the option for partial or complete removal of cable portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wide cutting edges and deep cuts are used by the stripping cutter, then the cutter can engage the cable component effectively, but damage to cable components such as shields and insulations occurs
Solution Approach 1:
The stripping process is segmented into two distinct stages: first, a scoring cutter creates a shallow circumferential incision in the cable sheath without penetrating deeper components; second, a pull-off tool engages the scored portion and mechanically removes it. This segmentation allows effective stripping while protecting shields and insulations from damage.
Solution Approach 2:
The scoring cutter performs a preliminary action by creating a controlled incision or score mark in the cable sheath before the pull-off tool removes the stripped portion. This preliminary scoring enables the pull-off tool to engage effectively without requiring deep cutting, thereby preventing damage to underlying cable components.
2Productivity
If the pull-off tool engages in the incision generated by the stripping cutter, then the stripped portion can be removed, but the elasticity of the cable sheath and non-ideal cable geometry prevent ideal engagement
Solution Approach 1:
The pull-off tool is designed with extraction elements that engage the scored cable sheath and mechanically extract the stripped portion from the cable. This extraction mechanism compensates for variations in cable geometry and sheath elasticity, ensuring reliable removal even when ideal engagement conditions are not met.
Solution Approach 2:
The system changes the operational parameters by using a two-stage process with different cutting depths and tool configurations. The scoring cutter uses shallow depth parameters, while the pull-off tool uses mechanical extraction parameters, adapting to variations in cable geometry and sheath properties to maintain precision across different cable types.
3Reliability
If the cable is processed through multiple steps including scoring and pulling off, then complete stripping is achieved, but processing time increases
Solution Approach 1:
The scoring and pulling-off operations are merged into a single coordinated sequence performed by the rotary head, which positions both the scoring cutter and pull-off tool to operate on the same cable portion in rapid succession. This merging reduces setup time and ensures complete stripping in one pass.
Solution Approach 2:
The rotary head maintains continuous rotation during both scoring and pulling-off operations, eliminating idle time between steps. The pull-off tool immediately engages the scored portion without interrupting the rotational motion, ensuring continuous useful action throughout the stripping process and minimizing total processing time.
Data Source
AI summary
A device for stripping a cable, comprising a stripping apparatus for cutting in and for pulling off a portion of a cable component. The stripping apparatus has a rotation head, which can be rotated about a central axis (M) and on which a blade and a counter-holder for the cable are arranged opposite one another in such a way that the blade and the counter-holder are directed at the central axis (M).