Heat Shrink Sleeve Induction Heating Method
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Solution Overview
Problem
Existing methods of heat shrinking protective sleeves onto electrical connections require external radiant heat sources, which inefficiently transfer heat through the sleeve, leading to undesirable effects.
Innovation Solution
Applying thermal energy to the outer surface of the protective sleeve while simultaneously or alternately using induction heating to increase the temperature of the electrical connection within, allowing the sleeve to shrink and form a tight bond without relying on external heat conduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If an external radiant heat source is used to heat the protective sleeve, then the sleeve can be shrunk onto the electrical connection, but the heat transfer through the sleeve is inefficient and causes undesirable effects
Solution Approach 1:
Instead of heating the protective sleeve from the outside, the invention inverts the approach by heating the electrical connection from the inside. The induction heating device generates heat within the electrical connection itself, which then transfers to the protective sleeve, eliminating the need for heat to penetrate through the sleeve material from an external source.
Solution Approach 2:
The electrical connection serves as an intermediary heat transfer medium. Rather than directly heating the protective sleeve, the induction heating device heats the electrical connection, which then acts as the mediator to transfer heat to the protective sleeve, achieving more efficient and controlled heating.
2Ease of manufacture
If external radiant heat is applied to shrink the protective sleeve, then the adhesive can be activated, but the process is slow and energy-intensive
Solution Approach 1:
The invention replaces the mechanical/thermal radiation heating system with an electromagnetic induction heating system. The induction heating device uses electromagnetic fields to directly induce currents in the electrical connection, generating heat rapidly and efficiently, thereby accelerating the adhesive activation process.
Solution Approach 2:
The invention changes the heating parameter from external radiant heat to internal induction heating. This parameter change enables rapid heating of the electrical connection, which in turn quickly activates the adhesive and shrinks the protective sleeve, significantly improving process speed and productivity.
3Reliability
If heat must pass through the protective sleeve to reach the adhesive, then the adhesive can be activated, but this causes damage risk to the electrical connection
Solution Approach 1:
The invention inverts the heating direction to protect the electrical connection. Instead of heating from outside through the protective sleeve (which risks overheating and damage), the heating is applied to the electrical connection from the inside, providing controlled and localized heat that activates the adhesive without exposing the connection to harmful external thermal stress.
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
This method efficiently shrinks the protective sleeve onto the electrical connection, forming a tight bond while avoiding the inefficiencies of external heat transfer, allowing for rapid heating and minimizing risk of damage to the connection.
Implementation Method 1
Thermal energy is applied to the outer surface of the protective sleeve so as to increase the temperature of the protective sleeve. As a result, the protective sleeve shrinks onto the electrical connection
Implementation Method 2
the temperature of some or all of the electrical connection disposed within the protective sleeve is increased, such as by induction heating
Implementation Method 3
the adhesive material forms a tight bond between the protective sleeve and the electrical connection
Data Source
AI summary
A method of heat shrinking a protective sleeve onto an electrical connection includes an initial step of providing an electrical connection, such as between an electrical wire and an electrical termination device, and a protective sleeve having an inner surface and an outer surface. The inner surface of the protective sleeve has an adhesive material applied thereto and is disposed about the electrical connection. Thermal energy is applied to the outer surface of the protective sleeve so as to increase the temperature thereof. Either before, at the same time, or after this step, the temperature of some or all of the electrical connection disposed within the protective sleeve is increased, such as by induction heating. As a result, the protective sleeve shrinks onto the electrical connection, and the adhesive material forms a tight bond between the protective sleeve and the electrical connection.