Printer Stand Linkage System to Reduce Carriage-Induced Sway
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Solution Overview
Problem
Large format printers experience structural damage and reduced print quality due to horizontal swaying motion caused by the heavy printing carriage's acceleration and deceleration, which existing support structures fail to adequately mitigate.
Innovation Solution
A linkage system comprising a first and second leg connection points proximal to the printing device and a third linkage pivot point distal on a crossbar, configured to transfer horizontal forces and generate restoring forces, reducing sway by constraining motion to a specific path that prevents relative horizontal movement between the legs and the pivot point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional 'X'-bar arrangements are used to reduce sway, then stability is improved, but device complexity and material usage increase
Solution Approach 1:
The support structure is segmented into distinct functional components: vertical legs, a crossbar for horizontal spanning, and a linkage mechanism with multiple pivot points. This segmentation allows each component to perform its specific function efficiently, reducing overall complexity while maintaining stability.
Solution Approach 2:
The linkage mechanism introduces dynamic elements with pivot points that allow controlled movement. The system transitions from a static rigid structure to a dynamic structure that can adapt to forces generated by the printing carriage, reducing sway through controlled motion rather than rigid resistance.
2Stability of the object's composition
If heavier support structures are used to reduce sway, then stability is improved, but weight increases
Solution Approach 1:
The linkage mechanism with pivot points creates a dynamic system that reduces sway through controlled motion and force distribution. This allows the use of lighter materials compared to static rigid structures, as the dynamic response to carriage forces provides stability without requiring excessive weight.
Solution Approach 2:
The crossbar and linkage mechanism are merged into an integrated system where the crossbar provides horizontal spanning and the linkage provides sway reduction. This combination achieves stability more efficiently than separate heavy components would provide.
3Stability of the object's composition
If rigid fixing joints are used to prevent swaying, then stability is improved, but structural damage risk increases due to force concentration
Solution Approach 1:
The pivot points in the linkage mechanism allow controlled rotation and movement, transforming the rigid fixing joint approach into a dynamic system. This distributes forces through rotational motion rather than concentrating them at fixed joints, reducing the risk of structural damage while maintaining stability.
Solution Approach 2:
The linkage mechanism with pivot points acts as a cushioning element that absorbs and redistributes forces generated by the printing carriage before they reach the structural joints. This prevents force concentration that could lead to structural damage.
4Stability of the object's composition
If more material is used in support structures, then stability is improved, but manufacturing cost and assembly complexity increase
Solution Approach 1:
The support structure is divided into modular segments (legs, crossbar, linkage components) that can be manufactured separately and assembled together. This segmentation reduces manufacturing complexity and assembly difficulty while maintaining stability through the coordinated function of individual components.
Solution Approach 2:
The dynamic linkage mechanism with pivot points provides sway reduction through geometric configuration rather than material quantity. This allows for simpler, lighter components that are easier to manufacture and assemble compared to heavy rigid structures.
Data Source
AI summary
A stand for supporting a printing device, the stand comprising: a first leg and a second leg, the legs having upper ends for vertically supporting a printing device to horizontally span the legs above a supporting surface; a crossbar fixed to the first leg at a first crossbar fixation point and fixed to the second leg at a second crossbar fixation point; and a linkage connected between the first and the second leg, the linkage comprising a first link, a second link and a third link connected in series, wherein: the first link is connected to the first leg in use at a first leg connection point; the second link is connected to the second leg in use at a second leg connection point; and the third link is connected to the crossbar to pivot about a third linkage pivot point and to the first and second links at first and second linkage connection points on opposite sides of the third linkage pivot point.