Elastic Sleeve Installation Using Controlled Core Expulsion
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Solution Overview
Problem
Existing methods for installing elastic protective sleeves on elongated elements like electric cables are complex and lack precision, leading to potential misalignment and air pockets that can cause defects.
Innovation Solution
A holding device is used to control the expulsion of cores through the sleeve, allowing for precise and convenient installation by stopping the core movement at a predetermined distance and then allowing the sleeve to contract and fully enclose the element, preventing misalignment and air pockets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If existing methods are used to install elastic protective sleeves, then the installation process is simple, but the precision is poor leading to misalignment and air pockets
Solution Approach 1:
A holding device is introduced as an intermediary tool between the installer and the core-sleeve assembly. This holding device includes a holding member that engages with the core and a holding arm that controls the core's movement, enabling precise positioning of the sleeve during installation while maintaining overall process simplicity
Solution Approach 2:
The holding device is prepared in advance with the holding member and holding arm positioned to control core movement. The holding arm is pre-configured to engage with the core at specific locations, allowing the sleeve to be precisely positioned before the actual installation action begins, thereby preventing misalignment and air pocket formation
2Productivity
If the core is expelled quickly through the sleeve, then the installation speed is high, but misalignment and air pockets occur
Solution Approach 1:
The holding arm is designed to dynamically control the core's movement during expulsion. It allows the core to move forward at a controlled rate rather than being expelled all at once, maintaining optimal tension on the elastic sleeve throughout the process. This dynamic control prevents the sleeve from collapsing or forming air pockets while still achieving rapid installation
Solution Approach 2:
The holding device provides real-time feedback control of the core's position during expulsion. The holding arm responds to the sleeve's expansion and contraction, automatically adjusting the core's movement to maintain proper sleeve tension and alignment, thereby preventing misalignment and air pocket formation even at high installation speeds
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 simple, precise, and convenient laying of the sleeve, ensuring electrical insulation and airtightness while preventing sleeve misalignment and air pocket formation, thus improving the installation process.
Implementation Method 1
an elastic protective sleeve (11) which is intended to cover tightly... an elongated element... in order to provide electrical insulation and airtightness and watertightness
Implementation Method 2
Film (13) with a low coefficient of friction is interposed between sleeve (11) and core (12) to allow them to slide relative to each other
Data Source
Figure 1~3
Figure 4~5
Figure 6~7
AI summary
An assembly comprising an elastic protective sleeve (211); two tubular cores (212, 212') for maintaining the expansion of said sleeve (211); for each tubular core (212, 212'), a sliding film (213, 213') interposed between said sleeve (211) and each core (212, 212'), to allow each core to slide relative to said sleeve; and a device (30) for holding the two cores (212, 212') so that they can move away from each other, from the initial state where they are end to end, until they are separated by a maximum of a predetermined distance at which the internal diameter of the sleeve (211) between the first ends (217, 217') is at least similar to the internal diameter of the cores (212, 212'), by which means said assembly (210A) with the two cores (212, 212') thus separated remains repositionable.