Substrate Loader with Rotatable Grippers for Suction Belt Loading
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Solution Overview
Problem
Existing substrate loading methods for hybrid printers are inefficient and costly, particularly when handling multiple substrates of varying sizes and materials, often leading to damage or misalignment during loading.
Innovation Solution
A method using an array of rotatable grippers that engage substrates at their leading portions, compensating for size and material differences, and utilize suction chambers to pull substrates onto a transport belt, allowing simultaneous loading of multiple substrates without damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If substrates are loaded one by one onto the transport belt, then each substrate can be carefully positioned, but the loading process is time-consuming and reduces productivity
Solution Approach 1:
Multiple substrates are loaded simultaneously onto the transport belt using a single array of grippers, combining multiple loading operations into one action. This maintains positioning accuracy through the suction mechanism while dramatically increasing loading speed by processing multiple substrates in parallel
2Productivity
If a single array of grippers is used to load multiple substrates simultaneously, then loading speed increases, but it becomes difficult to accommodate substrates of different sizes and materials
Solution Approach 1:
Each gripper in the array is independently rotatable, allowing dynamic adjustment of each gripper's orientation and position. This enables the system to adapt to substrates of varying sizes, shapes, and materials while maintaining simultaneous loading capability, as each gripper can be optimized for its specific substrate
3Manufacturing precision
If substrates are gripped at their leading portions between center and leading edge, then alignment accuracy improves, but the gripping mechanism becomes more complex
Solution Approach 1:
The substrates themselves define the gripping position through their geometric features (leading portions between center and leading edge). The grippers simply need to engage these naturally occurring features, allowing the substrates to guide their own positioning without requiring complex alignment mechanisms or additional positioning devices
4Productivity
If the support structure moves all gripped substrates simultaneously, then loading efficiency increases, but the support structure becomes more complex and expensive
Solution Approach 1:
The support structure is segmented into multiple independently controllable grippers rather than a single rigid structure. Each gripper can be actuated independently or in coordination with others, allowing simultaneous movement of multiple substrates while maintaining simpler, modular individual components that are easier and cheaper to manufacture and maintain
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
Enables efficient and cost-effective loading of multiple substrates by minimizing substrate damage and ensuring precise alignment, facilitating smooth transport for printing.
Implementation Method 1
a negative pressure is applied to the substrates via the at least one suction chamber, so that trailing portions of each of the substrates are pulled onto the transport belt
Data Source
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Figure 5~6
AI summary
A method for efficiently multiple loading substrates (S, S', S") simultaneously onto an endless transport belt (4) of a printer (1), comprising the steps of: - engaging each substrate (S, S', S") by an array of grippers (30,30'; 130; 230), each being rotatably mounted on a support beam (26); - pivoting and/or rotating the support beam (26) with the grippers (30,30'; 130; 230) gripping the substrates (S, S', S"), so that the substrates (S, S', S") are positioned on the transport belt (4) over a at least one suction chamber (5); - driving the transport belt (4) to move the substrates (S, S', S"), while a negative pressure is applied to the substrates (S, S', S") via the at least one suction chamber (5), so that trailing portions of each of the substrates (S, S', S") are pulled onto the belt (4).