Article Storage Facility Position Adjustment Mechanism
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Solution Overview
Problem
Conventional article storage facilities face challenges in efficiently adjusting the position of articles stored on the far side of the storage section due to displacement caused by vibrations from the transport device, leading to reduced storage and retrieval capabilities.
Innovation Solution
An article storage facility with a transport device equipped with a transfer machine featuring locking members and a control unit that allows for precise positioning adjustments, enabling the transfer machine to move articles from the near side to the far side and vice versa, ensuring accurate placement and minimizing disruptions to storage operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If articles are stored in the far side region of the storage section, then storage capacity is improved, but position stability deteriorates due to vibrations from the transport device
Solution Approach 1:
The system performs preliminary detection of article positions using detection units before transport operations. By detecting positions in advance and planning transport sequences accordingly, the system prevents excessive displacement accumulation in far-side articles, thereby maintaining position stability while preserving storage capacity.
Solution Approach 2:
The system continuously monitors article positions using detection units and feeds this information back to the control unit. Based on the feedback regarding displacement states of far-side articles, the control unit adjusts transport sequences and operations to correct positions, thereby maintaining position stability while articles remain stored in the far side region.
2Measurement precision
If position adjustment of far side articles is performed frequently, then position accuracy is improved, but storage and retrieval efficiency deteriorates
Solution Approach 1:
The system does not perform position adjustment for every article or at every transport cycle. Instead, it selectively adjusts positions only when detection units identify that far-side articles have exceeded displacement thresholds. This partial action approach maintains position accuracy while avoiding excessive adjustments that would reduce storage and retrieval efficiency.
Solution Approach 2:
The system changes operational parameters dynamically based on detected displacement states. When far-side articles show significant displacement, the control unit modifies transport sequences, speeds, or acceleration patterns to minimize further displacement or to gradually correct positions, thereby maintaining accuracy without frequent full-scale adjustments that would harm efficiency.
3Productivity
If transport operations are prioritized over position adjustment, then storage and retrieval efficiency is improved, but position accuracy of far side articles deteriorates
Solution Approach 1:
The system performs preliminary detection of article positions and displacement states before executing transport operations. By knowing the current positions of far-side articles in advance, the control unit can plan transport sequences that minimize displacement or incorporate position correction moves, thereby maintaining position accuracy without significantly impacting storage and retrieval efficiency.
Solution Approach 2:
The system continuously monitors article positions during transport operations using detection units. This continuous monitoring allows the control unit to make real-time adjustments to transport sequences or to schedule position correction operations during naturally occurring idle periods, thereby maintaining position accuracy while keeping storage and retrieval operations flowing continuously without major interruptions.
Data Source
AI summary
A control unit controls a transfer machine to execute: a first article delivery operation to store a target article in a first placement region as a first article; and a second article position adjustment operation of moving a second locking member disposed between the first article and a second article in a depth direction toward a depth-direction far side to a position corresponding to a position of a front surface portion of the second article located at a second article proper position, and the control unit is configured to, after the target article has been stored in the first placement region as the first article, cause the transfer machine to execute the second article position adjustment operation, and, upon end of the second article position adjustment operation, cause a first locking member be restored to a position corresponding to a holding region to end the first article delivery operation.