Robot-Adjusted Flap Spreading for Square Bottom Bag Forming
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Solution Overview
Problem
Existing flap spreading devices in bag making machines require manual adjustment of guide plates and linear members, necessitating machine stoppage for worker safety and impacting manufacturing efficiency due to material and thickness variations.
Innovation Solution
A flap spreading device utilizing a pair of robots to adjust the positions and postures of guide plates and guide bars in a three-dimensional space, enabling continuous operation during manufacturing, with input units and control units to manage these adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual adjustment of guide plates and linear members is performed, then positioning accuracy for different materials is improved, but machine stoppage is required reducing productivity
Solution Approach 1:
The system performs self-adjustment through the correction unit that automatically detects positioning deviations and commands the robots to correct them, eliminating the need for manual intervention and continuous machine stoppage while maintaining positioning accuracy
Solution Approach 2:
The detection unit continuously monitors the positions of guide plates and linear members, providing real-time feedback to the correction unit which then adjusts the positions via robots, creating a closed-loop control system that maintains precision without stopping production
2Object-affected harmful factors
If manual adjustment is performed during operation, then worker safety is improved, but adjustment capability is lost
Solution Approach 1:
The system replaces manual mechanical adjustment with an automated control system consisting of detection units, correction units, and robots that can adjust guide plates and linear members without worker intervention, thereby ensuring safety while maintaining full adjustment capability
Solution Approach 2:
The adjustment system operates autonomously through self-diagnosis and self-correction mechanisms, allowing the machine to adapt to different materials and conditions without requiring workers to enter dangerous zones
Data Source
AI summary
A flap spreading device that folds back a front flap of a bottom portion of a flat tubular body, conveyed by a bottom folding drum, upside down with respect to a back flap and planarly spreads the front flap and the back flap along an outer peripheral surface of the bottom folding drum in a square bottom forming device of a bag making machine, and includes: a pair of guide plates that guides both side portions of the flat tubular body along a conveyance direction of the bottom folding drum to planarly spread the front flap and the back flap; a pair of robots having the pair of guide plates as end effectors; and a position and posture adjustment device that adjusts positions and postures of the pair of guide plates in a three-dimensional space to target positions and target postures through operations of the pair of robots.