Additive Manufacturing Foil Accumulator for Independent Speed Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing additive manufacturing processes face challenges in efficiently managing the movement and interaction of flexible foils during the tape casting process, particularly when different portions of the foil need to move at varying speeds or intermittently, which can affect the efficiency and quality of component production.
Innovation Solution
An accumulator assembly is introduced between the feed and take-up modules to control the relative movement of the foil, allowing different portions to move at distinct speeds or intermittently, thereby enhancing process efficiency and component production speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the foil moves continuously at a constant speed through the additive manufacturing apparatus, then the process is simple to control, but different portions of the foil cannot move at different speeds or intermittently, reducing process efficiency
Solution Approach 1:
The foil movement control is segmented into multiple independent zones: a first portion upstream of the accumulator, a second portion downstream of the accumulator, and the intermediate portion retained within the accumulator. Each zone can be controlled independently to move at different speeds or intermittently, allowing simultaneous processes within the apparatus without requiring complex centralized control of the entire foil.
2Productivity
If the accumulator retains the intermediate portion of the foil to allow different portions to move at different speeds, then process efficiency improves, but the device complexity increases
Solution Approach 1:
The accumulator assembly acts as an intermediary device between the feed module and take-up module. It temporarily retains the intermediate portion of the foil, mediating the movement between the first portion (upstream) and the second portion (downstream). This intermediary function allows speed differentiation without requiring direct complex coordination between all system components.
3Productivity
If various portions of the foil move at different speeds simultaneously, then multiple processes can occur simultaneously within the apparatus, but controlling the foil movement becomes more difficult
Solution Approach 1:
The foil is divided into distinct controllable segments with the accumulator creating a physical separation point. The first portion can be fed at one speed while the second portion is pulled at another speed, with the intermediate portion buffered in the accumulator. This segmentation simplifies control by creating independent movement zones rather than requiring coordinated control of the entire foil as a single unit.
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 accumulator assembly enables independent movement of foil portions, facilitating simultaneous processes within the apparatus and improving the overall printing efficiency and process efficiency of additive manufacturing.
Implementation Method 1
Stereolithography (SLA) is a type of additive manufacturing process that employs a tank of radiant-energy curable photopolymer 'resin' and a curing energy source such as a laser.
Implementation Method 2
An accumulator is positioned between the feed module and the take-up module. The accumulator is configured to retain an intermediate portion of the foil to allow a first portion of the foil upstream of the accumulator to move at a first speed and a second portion of the foil downstream of the accumulator to move at a second speed during a defined time period.
Data Source
AI summary
An additive manufacturing apparatus includes a feed module and a take-up module that are configured to operably couple with a foil. A stage is configured to hold one or more cured layers of a resin that form a component. A radiant energy device is positioned opposite to the at least one stage. The radiant energy device is operable to generate and project radiant energy in a predetermined pattern. An actuator is configured to change a relative position of the at least one stage and the foil. An accumulator is positioned between the feed module and the take-up module. The accumulator is configured to retain an intermediate portion of the foil to allow a first portion of the foil upstream of the accumulator to move at a first speed and a second portion of the foil downstream of the accumulator to move at a second speed during a defined time period.