Transparent Plasticizer Barrel for Resin State Monitoring

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Solution Overview

Problem

Existing plasticizers lack a method to effectively monitor and maintain the plasticization state of resin pellets during the transformation from solid to fluid state, leading to unstable discharge and supply issues in three-dimensional modelers and injection molders.

Innovation Solution

Incorporating a transparent member into the flat screw and barrel of the plasticizer, allowing for visual and thermal monitoring of the plasticization process through visible and infrared imaging, enabling real-time detection of the plasticization state and adjustment of heating and rotational speed to optimize material transformation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the resin pellet is transported and plasticized in the spiral groove, then the material transformation from solid to fluid state is achieved, but the plasticization state cannot be monitored leading to unstable discharge and supply

Engineering Contradiction:
Improvestability of discharge and supplyVSAvoidplasticization state monitoring
Core Design Contradiction:
ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent applies transparency (optical property change) to the barrel and/or rotor to enable visual monitoring of the plasticization state. The transparent material allows observation of the resin pellet transformation from solid to fluid state, solving the detection difficulty while maintaining reliable discharge and supply stability.

Inventive Principle:
Principle #32Color changes

2Manufacturing precision

If the material plasticizes all the way to the vicinity of the material supply portion, then the plasticization is complete, but no transportation force is produced resulting in unstable discharge

Engineering Contradiction:
Improveplasticization completionVSAvoiddischarge stability
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The transparent barrel/rotor provides visual feedback on the plasticization state, enabling real-time monitoring and adjustment of processing parameters. This feedback mechanism allows optimization of the balance between plasticization completion and transportation force maintenance, ensuring both manufacturing precision and discharge stability.

Inventive Principle:
Principle #23Feedback

3Difficulty of detecting and measuring

If the transparent member is added to enable monitoring, then the plasticization state becomes visible, but the device complexity increases

Engineering Contradiction:
Improveplasticization state visibilityVSAvoidstructure complexity
Core Design Contradiction:
Difficulty of detecting and measuringVSDevice complexity

Solution Approach 1:

The transparent member serves multiple functions: it enables visual monitoring of plasticization state, allows observation of material flow, and maintains the structural integrity of the barrel and/or rotor. This multi-functionality reduces the need for additional separate monitoring devices, thereby limiting the increase in overall device complexity.

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

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 allows for stable and controlled plasticization, ensuring consistent supply and discharge of plasticized material, improving the efficiency and reliability of three-dimensional modelers and injection molders by monitoring and adjusting the plasticization process in real-time.

Implementation Method 1

a heater that heats a material supplied to a space between the flat screw and the barrel

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

at least one of the flat screw and the barrel is at least partially formed of a transparent member, and the material between the flat screw and the barrel is visible through the transparent member

Methodology Applied
Scientific EffectTransparency: Light

Data Source

PatentUS11878454B2Plasticizer, three-dimensional modeler, and injection molder
Publication Date: 2024.01.23 SEIKO EPSON CORP
  • US11878454B2 patent drawing
  • US11878454B2 patent drawing
  • US11878454B2 patent drawing

AI summary

A plasticizer includes a drive motor, a flat screw that has a groove forming surface where a groove is formed and is rotated by the drive motor, a barrel which has a groove facing surface that faces the groove forming surface and in which a communication hole is formed, and a heater that heats resin pellets supplied to the space between the flat screw and the barrel, and at least one of the flat screw and the barrel is at least partially formed of a transparent member, and the resin pellets between the flat screw and the barrel is visible through the transparent member.