Cylindrical Mold Electromagnetic Induction Belt Production

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Solution Overview

Problem

Existing methods for producing belts with V-shaped ribs, such as V-ribbed belts, require complex outer molds with temperature control mechanisms, leading to increased processing time and costs, and necessitate different molds for various belt types.

Innovation Solution

A method using a simple cylindrical metal mold with a rotation mechanism and electromagnetic induction coils for heating, eliminating the need for heating or cooling mediums and allowing uniform heating without a jacket or pipe, enabling efficient production of belts with a straightforward mold design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a temperature control mechanism with heating/cooling medium flow channels is provided in the outer mold, then temperature control capability is improved, but device complexity and processing time increase

Engineering Contradiction:
Improvetemperature control capabilityVSAvoidmold structure complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical temperature control system (with flow channels, jackets, and medium circulation) with an electromagnetic induction heating system. The induction coil generates an electromagnetic field that directly induces eddy currents in the conductive mold, heating it without requiring physical contact or fluid flow channels. This substitution eliminates the complex temperature control mechanism while achieving effective temperature control.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts and removes the temperature control mechanism (jacket, flow channels, and medium circulation system) from the mold structure. By taking out this complex subsystem, the mold design is simplified to a basic cylindrical shape, reducing manufacturing complexity and processing time while the electromagnetic induction system provides the necessary heating function externally.

Inventive Principle:
Principle #2Taking out (Extraction)

2Adaptability or versatility

If different outer molds are prepared for different belt types, then product versatility is improved, but manufacturing cost and processing time increase

Engineering Contradiction:
Improvebelt type adaptabilityVSAvoidmold manufacturing cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent makes the mold universal by designing a standardized cylindrical mold structure that can produce different belt types through software configuration rather than physical modification. The electromagnetic induction heating system and basic mold geometry remain the same, while the V-shaped rib formation grooves on the inner mold can be digitally adjusted to create different belt patterns, allowing one physical mold to serve multiple product types.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent changes the approach from physical mold modification to digital parameter adjustment. By modifying the groove patterns on the inner mold through CNC machining or 3D printing based on digital models, different belt types can be produced using the same outer mold structure. This parameter-based adaptation reduces manufacturing costs and processing time compared to creating entirely different molds for each belt type.

Inventive Principle:
Principle #35Parameter changes

3Temperature

If a jacket and pipe structure is provided in the cylindrical mold for heating medium flow, then heating capability is improved, but manufacturing complexity and heating uniformity worsen

Engineering Contradiction:
Improveheating capabilityVSAvoidmold structure complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical heating system (jacket with internal flow channels) with an electromagnetic induction heating system. The induction coil generates an electromagnetic field that penetrates the mold and directly induces eddy currents within the mold material itself, heating it uniformly from the entire volume simultaneously. This eliminates the need for thermal conduction through jacket walls and fluid flow channels, achieving both simplified structure and superior heating uniformity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 approach simplifies the production process, reduces costs, and allows for uniform heating of the mold, resulting in efficient belt manufacturing with reduced processing time and complexity.

Implementation Method 1

an electromagnetic induction coil configured to heat the cylindrical mold through electromagnetic induction

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

a rotation mechanism configured to rotatably support the cylindrical mold

Methodology Applied
Scientific EffectRotational motion:

Implementation Method 3

the shaped structure is pressurized from inside

Methodology Applied
Scientific EffectPressure:

Data Source

PatentUS10391680B2Method for producing belt, and cylindrical mold and crosslinking apparatus used therefor
Publication Date: 2019.08.27 BANDO CHEM IND LTD
  • US10391680B2 patent drawing
  • US10391680B2 patent drawing
  • US10391680B2 patent drawing

AI summary

A method include: providing a cylindrical mold made of metal, a shaped structure having a cylindrical shape, a rotation mechanism configured to rotatably support the cylindrical mold, and an electromagnetic induction coil configured to heat the cylindrical mold through electromagnetic induction; setting the shaped structure inside the cylindrical mold; and molding a cylindrical belt slab by heating the cylindrical mold by the electromagnetic induction coil, while the cylindrical mold is rotated by the rotation mechanism and the shaped structure is pressurized from inside and pressed against the cylindrical mold.