Reciprocating Unit for 3D Printing Prevents Structural Damage
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Solution Overview
Problem
Existing three-dimensional shaped object manufacturing devices face challenges in size enlargement and structural damage during the manufacturing process due to independently configured powder supply and nozzle heads, which hinder high-speed production and increase the risk of structural contact.
Innovation Solution
A three-dimensional shaped object manufacturing device with a reciprocating unit that includes both powder supply portions and layer forming portions, along with a control system to manage the movement and powder application, ensuring symmetrical configuration and preventing downstream layer forming portions from contacting the structure during forward and backward movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the powder supply portion and nozzle head are independently configured, then the device structure is simple and easy to manufacture, but the device size enlarges and manufacturing speed decreases
Solution Approach 1:
The patent combines the powder supply portion and nozzle head into a single integrated reciprocating unit. This unit includes the first supply portion, first layer forming portion, head, second layer forming portion, and second supply portion arranged in sequence, allowing them to move together as one assembly during reciprocating motion to manufacture three-dimensional shaped objects.
2Productivity
If the device operates at high speed, then productivity improves, but the risk of structural member contact with the three-dimensional structure increases
Solution Approach 1:
The patent employs dynamic control where the layer forming portion moves in the separating direction before facing the shaping region during reciprocating motion. This dynamic positioning adjusts the timing and position of the layer forming portion relative to the three-dimensional shaped object, preventing contact while maintaining high-speed operation.
3Device complexity
If the layer forming portion remains stationary during reciprocating motion, then the structure is simple, but the downstream layer forming portion may contact the three-dimensional structure
Solution Approach 1:
The control unit performs preliminary action by moving the layer forming portion in the separating direction before the layer forming portion faces the shaping region. This advance movement prevents potential contact between the layer forming portion and the three-dimensional shaped object during the reciprocating operation.
Data Source
AI summary
In a three-dimensional shaped object manufacturing device, when a unit is moved in a forward direction, powder is supplied from a first supply portion, a powder layer is formed by a first layer forming portion, a liquid is discharged to a shaping region from a head, and a second layer forming portion is moved in a direction separating from a shaping table before the second layer forming portion faces the shaping region, and when the unit is moved in a backward direction, the powder is supplied from a second supply portion, the powder layer is formed by the second layer forming portion, the liquid is discharged to the shaping region P from the head, and a first layer forming portion is moved in a direction separating from the shaping table before the first layer forming portion faces the shaping region.