Cartesian Article Transfer Facility with Segmented Drive Control
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Solution Overview
Problem
Existing article transfer facilities face inefficiencies in transferring multiple articles due to the need for the holding portion to complete the transfer of one article before retrieving the next, leading to prolonged transfer times.
Innovation Solution
An article transfer facility with a drive portion configured as a Cartesian coordinate robot, allowing the holding portion to pick up an article at one position and immediately move to another to place it on a placement portion, while the placement portion is controlled to unload articles directly to a second position, reducing transfer time and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the holding portion transfers an article from the first position to the second position on its own, then the transfer is completed in one operation, but the time required for article transfer increases
Solution Approach 1:
The article transfer process is divided into two independent operations: first control (picking up article from first position and placing on placement portion) and second control (moving article from placement portion to second position). This segmentation allows the holding portion to complete the first control quickly and immediately prepare for the next article, reducing idle time while maintaining functional clarity through separate control mechanisms.
Solution Approach 2:
The placement portion serves as an intermediary element between the first position and the second position. By introducing this intermediate placement area, the system enables the holding portion to deposit articles rapidly without needing to complete the full transfer trajectory, thereby reducing transfer time while the second control handles the final positioning to the second position.
2Adaptability or versatility
If a robot arm with multiple joints is used for article transfer, then the transfer flexibility is improved, but the manufacturing cost increases
Solution Approach 1:
The transfer operation is segmented into two independent control phases (first control and second control), each handled by simplified drive portions. The first drive portion handles picking and placement on the placement portion, while the second drive portion handles transfer from the placement portion to the second position. This segmentation eliminates the need for a complex multi-joint robot arm, reducing manufacturing cost while maintaining transfer flexibility through coordinated control of the two phases.
Solution Approach 2:
The placement portion serves multiple functions: it acts as a temporary holding area for articles during transfer, a positioning reference for the second drive portion, and an enabling element for rapid article deposition. This multi-functionality allows the system to achieve versatile transfer capabilities without requiring complex robotic mechanisms, thereby reducing manufacturing cost while maintaining adaptability.
Data Source
AI summary
In an article transfer facility, a drive portion includes a first Z-axis drive portion configured to move a holding portion in a Z direction, a first X-axis drive portion configured to move the holding portion in an X direction, a first Y-axis drive portion configured to move the holding portion in a Y direction, and a second X-axis drive portion configured to move a placement portion in the X direction. A control portion executes first control in which an article at a first position is placed on the placement portion, and second control in which the article placed on the placement portion is arranged at a second position. In the first control, the drive portion is controlled such that the holding portion picks up the article at the first position and moves to a position on an upper side of the placement portion, and thereafter releases the article to place the article on the placement portion.