Linear Motor Placement Device for Sheet Position Correction
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Solution Overview
Problem
Existing methods for conveying sheet members do not effectively address the need for high-speed conveyance while maintaining accurate position correction during the process, which is crucial for improving production efficiency in stack manufacturing.
Innovation Solution
A placement device and method utilizing a linear motor system with a main mover and sub mover, coupled with a holder and position detection system, to convey and correct the position of sheet members in a horizontal plane, enabling high-speed conveyance and precise placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a single linear motor is used to convey the sheet member, then the conveyance speed can be increased, but the position correction capability is lost
Solution Approach 1:
The linear motor system is segmented into a main mover for conveyance and a sub mover for position correction. The main mover handles high-speed conveyance while the sub mover handles precise position correction, allowing both functions to be performed independently and simultaneously without interference.
Solution Approach 2:
Both the main mover and sub mover operate on the same rail and share the holder mechanism, allowing a single conveyance system to perform multiple functions: high-speed conveyance by the main mover and precise position correction by the sub mover, eliminating the need for separate systems.
2Manufacturing precision
If position correction is performed during conveyance, then placement precision is improved, but the conveyance time increases
Solution Approach 1:
The sub mover performs position correction continuously during the conveyance process rather than stopping to correct position. The correction action occurs simultaneously with conveyance, eliminating idle time and maintaining continuous productive action throughout the process.
Solution Approach 2:
The sub mover applies only the necessary partial correction to achieve reference position alignment during conveyance, rather than complete repositioning. This minimal intervention approach corrects offset efficiently without adding significant time to the conveyance process.
3Manufacturing precision
If a complex position correction mechanism is used, then placement accuracy is improved, but the device complexity increases
Solution Approach 1:
The position correction function is achieved through a second linear motor (sub mover) using electromagnetic force rather than complex mechanical linkages, gears, or linkages. This substitution of electromagnetic actuation for mechanical correction mechanisms simplifies the overall device structure while maintaining high precision.
Solution Approach 2:
The system changes the control parameter from post-conveyance correction to simultaneous correction during conveyance. The sub mover adjusts the holder position in real-time based on detected offset, using dynamic parameter adjustment rather than static mechanical correction mechanisms.
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 high-speed conveyance of sheet members with accurate position correction, enhancing production efficiency by ensuring precise placement and preventing defects in stack manufacturing processes.
Implementation Method 1
a main mover of a linear motor running on the rail, a sub mover of a linear motor running on the rail alongside the main mover
Data Source
AI summary
A main mover and sub mover are made to run while changing a relative distance of the sub mover with respect to the main mover to change contact positions of cams and cam followers based on a holding position of a sheet member detected by a position detection device to thereby change a position in a horizontal plane of a holder and correct a holding position of the sheet member held at the holder to a preset reference position.