3D Shaping Nozzle Discharge Control for Precision
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Solution Overview
Problem
Existing three-dimensional shaping technologies face challenges in maintaining shaping precision due to varying nozzle movement speeds, which can lead to excessive material discharge and reduced precision, especially at corners and complex shapes.
Innovation Solution
A three-dimensional shaping apparatus with a discharge control mechanism that adjusts the discharge amount of the shaping material based on the relative movement speed between the nozzle and the table, using a butterfly valve to control the flow path and a suction portion to manage material flow, ensuring consistent discharge volume and precision across different speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the nozzle movement speed is reduced at corners and complex shapes, then the shaping precision is improved, but the discharge amount of material becomes excessive
Solution Approach 1:
The discharge amount control mechanism dynamically adjusts the material discharge rate based on the nozzle movement speed. When the nozzle slows down at corners or complex shapes, the control mechanism automatically reduces the discharge amount proportionally, maintaining consistent material deposition per unit length and preventing excessive material accumulation that would compromise shaping precision.
Solution Approach 2:
The system changes the discharge parameter (material flow rate) in response to changes in movement speed parameter. By establishing a correlation between these two parameters, the system ensures that material discharge is optimized for each specific movement condition, allowing the nozzle to slow down for precision work without overflowing material.
2Ease of manufacture
If the discharge amount is kept constant, then the material supply is simplified, but the shaping precision deteriorates at varying speeds
Solution Approach 1:
The discharge amount control mechanism operates as a feedback-controlled system that continuously monitors nozzle movement speed and automatically adjusts the material discharge rate accordingly. This closed-loop control ensures that shaping precision is maintained across varying speeds without requiring complex manual intervention or oversimplified constant discharge modes.
Data Source
AI summary
A three-dimensional shaping apparatus includes a plasticizing portion plasticizing a material to generate a shaping material, a nozzle having a discharge port discharging the shaping material toward a table, a movement mechanism changing a relative position between the nozzle and the table, a discharge control mechanism provided in a flow path which connects the plasticizing portion to the nozzle and controlling a discharge amount of the shaping material from the nozzle, and a control portion controlling the plasticizing portion, the movement mechanism, and the discharge control mechanism to shape the three-dimensional shaping object. The control portion controls the discharge control mechanism so that when a relative movement speed between the nozzle and the table is a first speed, the discharge amount of the shaping material is set to a first discharge amount, and when the relative movement speed between the nozzle and the table is a second speed which is slower than the first speed, the discharge amount of the shaping material is set to a second discharge amount which is smaller than the first discharge amount.