Cable Inner Sheath Removal Using Compressed Air Nozzles
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Solution Overview
Problem
Current cable processing technologies for HSD products are not fully automated, requiring manual or semi-automatic processing steps such as stripping, cutting, and turning back the braided shield, which limits efficiency and integration with fully automatic systems.
Innovation Solution
A device with a holding arrangement, sensor, and control system that includes a socket-shaped receptacle and a working head with a central compressed air nozzle and rotating milling head for gentle and precise removal of the inner film covering, allowing for axial movement and mechanical action to deform and remove the film, while protecting other cable elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual or semi-automatic processing steps are used for stripping, cutting, and turning back the braided shield, then processing flexibility is maintained, but processing efficiency and automation level are limited
Solution Approach 1:
The patent replaces manual mechanical operations with an automated system that uses compressed air nozzles to remove the inner covering. The compressed air system automatically performs the function that previously required manual stripping tools, enabling integration into fully automatic cable processing lines while maintaining the delicate handling needed for the inner covering removal process.
Solution Approach 2:
The patent employs compressed air nozzles directed at the inner covering to be removed. The pneumatic system delivers controlled bursts of compressed air that gently remove the delicate inner covering without damaging surrounding components. This pneumatic approach enables automated operation while preserving the careful handling characteristics of manual processes.
2Manufacturing precision
If compressed air is used to remove the inner covering, then the removal process becomes gentle and precise, but the risk of damaging other cable elements increases
Solution Approach 1:
The patent employs multiple compressed air nozzles positioned at different locations and angles to target specific areas of the inner covering. Each nozzle is directed at a particular section, allowing selective and controlled removal of the covering material. This localized approach enables precise removal while minimizing exposure of protected cable elements to the compressed air, thereby reducing damage risk.
Solution Approach 2:
The patent positions the compressed air nozzles and protective shields in advance before the compressed air is activated. The protective shields are pre-positioned to cover vulnerable cable elements such as the braided shield and outer sheath. This preliminary arrangement ensures that when compressed air is applied, only the intended inner covering is affected while other elements are already protected.
3Object-affected harmful factors
If the central opening is designed with a minimum inner diameter to protect cable elements, then shielding effectiveness is improved, but the alignment precision for compressed air nozzle application is reduced
Solution Approach 1:
The patent divides the central opening into multiple sections with different diameter characteristics. The opening includes a larger upper portion that facilitates alignment and insertion, and a smaller lower portion that provides protective shielding. This segmented design allows the cable to be easily aligned and inserted through the larger section while the smaller section maintains effective shielding during the compressed air application process.
Solution Approach 2:
The patent employs a movable or adjustable central opening structure that can dynamically adapt its configuration. The opening can be positioned or sized differently during different stages of the process: larger during alignment and insertion phases to facilitate precision positioning, and smaller during the actual compressed air application to maximize shielding effectiveness. This dynamic adjustment resolves the contradiction between alignment precision and shielding effectiveness.
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
Enables fully automatic processing of cables by efficiently removing the inner film covering, optimizing alignment and shielding to minimize waste and ensure precise cutting, facilitating integration with higher-level system controls for enhanced processing efficiency.
Implementation Method 1
a working head is provided which can be moved axially with respect to the axis of the central opening relative to the receptacle and has at least one central compressed air nozzle directed towards the end of the cable. The film covering of the inner conductors can thus be opened quickly and very gently by causing it to burst open or at least swell up as a result of the compressed air blast or compressed air flow.
Implementation Method 2
the working head has a rotating milling head for milling removal of the inner casing
Data Source
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AI summary
A device for removing an inner sheath of electrical conductors (4) of a cable (3), preferably a foil located between a shield (1) and the inner conductors (4), comprises a holding arrangement/clamping device (6) for clamping the cable (3). A sensor and control unit for the device is also provided. A socket-shaped receptacle (8) is provided for the end of the cable (3) to be processed, into which it can be inserted by a relative movement of the holding arrangement/clamping device (6) and the receptacle. A working head (9) movable relative to the receptacle (8) is equipped with at least one central compressed air nozzle (9b) directed towards the end of the cable.