Roller Pulverizer with Hollow Cooling for Resin Adhesion

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Solution Overview

Problem

Existing pulverizing apparatuses face issues with the resin composition adhering to the rotating blades during the pulverization process, leading to inefficiencies and contamination in the production of semiconductor packages.

Innovation Solution

A pulverizing apparatus utilizing a pair of rollers with a cooling system to maintain the resin composition at a low temperature, preventing adhesion by using ceramic materials and a cooling mechanism that includes both liquid coolant and cool air to manage heat effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a rotating blade is used to pulverize the kneaded composition, then the pulverization process can be completed, but the pulverized composition is heated and adheres to the rotating blade as remaining materials

Engineering Contradiction:

Improvepulverization processVSAvoidadhesion of pulverized composition to blade

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the rotating blade mechanical pulverization system with a roller compression system. The rollers apply compressive force to the kneaded composition, pulverizing it through pressure rather than mechanical cutting. This substitution eliminates the friction and heat generation that cause adhesion to the blade surface.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the operating parameters by introducing cooling air flow through the roller structure. This cooling parameter prevents heating of the pulverized composition during the compression process, thereby preventing adhesion to the roller surfaces and maintaining production efficiency.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If the kneaded composition is pulverized without cooling, then the pulverization can proceed, but the pulverized composition heats up and adheres to the roller surface

Engineering Contradiction:

Improvecontinuous pulverizationVSAvoidtemperature of pulverized composition

Core Design Contradiction:

ProductivityVSTemperature

Solution Approach 1:

The patent introduces cool air as an intermediary cooling medium that flows through the roller structure. This intermediary substance absorbs heat from the pulverized composition without directly contacting it, maintaining continuous pulverization while controlling temperature to prevent adhesion.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of manufacture

If a rotating blade is used for pulverization, then the composition can be processed, but metallic fragments may contaminate the pulverized composition

Engineering Contradiction:

Improvepulverization processVSAvoidmetallic fragment contamination

Core Design Contradiction:

Ease of manufactureVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the rotating blade system with a roller compression system. The rollers, typically made of non-metallic or coated materials, apply pressure to pulverize the composition without generating metallic fragments. This mechanical substitution eliminates contamination while maintaining ease of manufacture.

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

The solution effectively prevents the resin composition from adhering to the rollers, ensuring a clean and efficient pulverization process, maintaining the quality of the semiconductor package components and reducing contamination from metallic fragments.

Implementation Method 1

a cooling device for cooling the hard resin composition during the hard resin composition being pulverized

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

the cooling device is configured to supply a coolant into the hollow portion of each of the rollers

Methodology Applied

Scientific EffectHeat transfer: Heat Exchanger

Implementation Method 3

each of the rollers has an outer peripheral surface constituted of a ceramic material

Methodology Applied

Scientific EffectSurface energy effects: Surface Tension

Data Source

PatentUS9409179B2Pulverizing apparatus and pulverizing method

Publication Date: 2016.08.09 SUMITOMO BAKELITE CO LTD

AI summary

A pulverizing apparatus for pulverizing a hard resin composition has a pulverizing mechanism having a pair of rollers arranged parallel to one another, these rollers pulverizing the hard resin composition by pressuring the hard resin composition between the rollers and a cooling device for cooling the hard resin composition during the hard resin composition being pulverized. Each of the rollers has a cylindrical shape with a hollow portion and the cooling device is configured to supply a coolant into the hollow portion of each of the rollers. The coolant flows in the hollow portion of each of the rollers in a longitudinal direction of each of the rollers. The cooling device has facilitating members respectively inserted into the hollow portions of the rollers.