Inductively Heated Cylinder Embossing Tool
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Solution Overview
Problem
Existing devices for heating tools arranged on a rotatable cylinder heat the entire cylinder structure, including tools, leading to longer cooling times and increased warm-up times due to excessive heating of non-tool components.
Innovation Solution
A device featuring an induction coil with windings around the cylinder circumference, specifically heating only the tools made of magnetizable materials while keeping the non-magnetizable cylinder components unheated, along with a lightweight, sleeve-shaped carrier body made of materials like aluminum, significantly reduces heating mass and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the entire cylinder structure is heated using induction heating, then the tools are heated, but the cooling time increases due to excessive heating of non-tool components
Solution Approach 1:
The patent applies local quality by making different parts of the cylinder have different magnetic properties. The tools are made of magnetizable material (body-centered cubic steel) while the cylinder body is made of non-magnetizable material (face-centered cubic steel or ceramic composite). This allows the induction coil to heat only the tools locally without heating the entire cylinder structure, thereby reducing cooling time while maintaining effective tool heating.
2Temperature
If conventional heating methods are used to heat tools on the cylinder, then tools are heated, but the warm-up time increases due to heating of large mass
Solution Approach 1:
By creating local magnetic properties in the tools while keeping the cylinder body non-magnetic, the induction heating process targets only the small mass of the tools. This selective heating dramatically reduces warm-up time compared to conventional methods that would heat the entire large mass of the cylinder structure.
3Strength
If the cylinder body is made of traditional magnetic materials, then structural strength is maintained, but the weight increases
Solution Approach 1:
The patent employs composite materials by combining non-magnetizable face-centered cubic steel or ceramic composite materials for the cylinder body with magnetizable body-centered cubic steel for the tools. This composite approach achieves both weight reduction through lighter non-magnetic materials and maintains structural strength, while enabling selective induction heating of the tools.
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 solution minimizes warm-up time and cooling time for tools, achieving efficient heating of only the necessary components and reducing the overall weight of the cylinder structure.
Implementation Method 1
An induction coil 24 is arranged on the circumference of the cylinder such that the coil winding is wound around the circumference of the cylinder
Implementation Method 2
When current is applied to the induction coil 24, a magnetic field is generated in a known manner, which leads to the heating of the magnetizable materials located in the magnetic field
Implementation Method 3
a magnetic field is generated in a known manner, which leads to the heating of the magnetizable materials located in the magnetic field
Data Source
Figure 1
Figure 2
AI summary
The device has an induction coil for creation of magnetic field. An embossing tool is attached to a sleeve-shaped carrier formed on a jacket of a rotating cylinder (22). The embossing tool is made of a magnetizable material while the rotating cylinder, the jacket and the carrier are made of a non-magnetizable material.