3D Molding Screw-Barrel Clearance for Accuracy and Speed
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing three-dimensional molding technologies face challenges in achieving high accuracy and high speed in the molding process.
Innovation Solution
A three-dimensional molding device with a plasticization section that includes a screw with a groove forming surface and a barrel, where the distance between the screw and barrel is adjustable to optimize molding conditions, allowing for varying distances based on specific material properties to enhance accuracy or speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the distance between the screw and barrel is fixed at a standard value, then the device structure is simple, but the molding accuracy and speed cannot be optimized for different materials
Solution Approach 1:
The patent applies the dynamics principle by making the distance between the screw and barrel adjustable rather than fixed. The position change mechanism allows the barrel to move relative to the screw, enabling dynamic adjustment of the clearance distance based on material properties and molding requirements. This transforms a static structure into a dynamic one that can adapt to different molding conditions, thereby improving molding accuracy without requiring complete redesign of the device structure.
Solution Approach 2:
The patent applies the parameter changes principle by varying the clearance distance parameter between the screw and barrel according to different material characteristics and molding conditions. The control section adjusts the position of the barrel relative to the screw to change the clearance distance, optimizing parameters such as material plasticization efficiency and ejection speed. This allows the same device to achieve different molding accuracies and speeds by simply changing the clearance distance parameter.
2Productivity
If the screw rotates at high speed to increase productivity, then the molding speed increases, but the motor may become overloaded
Solution Approach 1:
The patent applies the parameter changes principle by adjusting the clearance distance between the screw and barrel to optimize the balance between molding speed and motor load. When the clearance distance is increased, the motor load decreases, allowing high-speed rotation without overload. When the clearance distance is decreased, the plasticization efficiency increases, improving molding speed. The control section dynamically adjusts this parameter to maintain optimal productivity while preventing motor overload.
Solution Approach 2:
The patent applies the dynamics principle by enabling dynamic adjustment of the screw-barrel clearance distance in response to varying molding requirements and motor load conditions. This allows the system to operate at high speeds when the motor can handle the load, and reduce speed or increase clearance when the motor approaches its power limit, thereby maintaining high productivity while preventing motor damage.
3Speed
If the clearance distance between screw and barrel is increased, then the material ejection speed increases, but the material plasticization may be insufficient
Solution Approach 1:
The patent applies the parameter changes principle by dynamically adjusting the clearance distance parameter to optimize the trade-off between ejection speed and plasticization quality. The control section monitors molding conditions and adjusts the barrel position relative to the screw to maintain the optimal clearance distance, ensuring that material is sufficiently plasticized while achieving the required ejection speed for high-precision molding.
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 device enables improved accuracy or speed in molding by adjusting the screw-barrel distance, stabilizing material ejection, and reducing motor overload, thereby enhancing the quality and efficiency of three-dimensional molded objects.
Implementation Method 1
a heating section configured to heat the material supplied between the screw and the barrel
Implementation Method 2
a screw that is rotated by the drive motor and has a groove forming surface
Implementation Method 3
a screw that is rotated by the drive motor and has a groove forming surface
Data Source
AI summary
A three dimensional molding device includes a plasticization section that generates a molding material, a nozzle that ejects the molding material toward a stage, and a control section that controls molding of a three dimensional molded object using the molding material. The plasticization section includes a drive motor, a screw, a barrel, a heating section, and a position change mechanism configured to change a relative position between the screw and the barrel. The control section, when a condition related to molding is a first condition, sets a distance between the screw and the barrel to a first distance to cause the plasticization section to generate the molding material, and, when the condition is a second condition, sets the distance between the screw and the barrel to a second distance to cause the plasticization section to generate the molding material. The second distance is greater than the first distance.