Envelope Flap Detection Using Dual Position Sensors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing enclosing-sealing apparatuses face challenges in precisely detecting the open state and length of envelope flaps, leading to inefficient enclosure and sealing processes, especially when handling various envelope types, which affects the accuracy and reliability of the enclosing-sealing operation.
Innovation Solution
The apparatus incorporates a controller with first and second envelope detectors to determine the open state of the flap and calculate the flap length, allowing for precise detection and troubleshooting of flap issues, ensuring proper enclosure and sealing of folded sheets into envelopes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single envelope detector is used to detect envelope position, then the device complexity is reduced, but the measurement precision of flap open state and flap length is insufficient
Solution Approach 1:
The patent divides the envelope detection function into two separate detectors: a first envelope detector upstream of the flap opener and a second envelope detector downstream. Each detector independently measures envelope position at different stages, enabling precise calculation of flap open state and flap length through coordinate transformation and subtraction, thereby achieving high measurement precision without requiring a single complex detector
2Measurement precision
If multiple envelope detectors are deployed to improve detection accuracy, then the measurement precision of flap parameters is enhanced, but the device complexity increases
Solution Approach 1:
The first envelope detector is positioned upstream of the flap opener to detect the envelope's leading end and trailing end coordinates before the flap opening operation. This preliminary detection captures the initial state of the envelope, which is then used in conjunction with the second detector's data to calculate flap length and open state, enabling accurate measurement without adding complex real-time tracking mechanisms
3Adaptability or versatility
If the enclosing-sealing apparatus uses basic detection methods, then the device complexity is low, but the adaptability to various envelope types is limited
Solution Approach 1:
The controller dynamically calculates flap length and open state by processing coordinate data from both envelope detectors through mathematical operations (subtraction and transformation). This parameter-based approach allows the system to adapt to various envelope types and sizes without requiring physical reconfiguration, achieving high versatility through software-based parameter adjustment rather than hardware changes
Data Source
AI summary
An enclosing-sealing apparatus includes a flap opener that opens a flap of an envelope while the envelope is conveyed to an enclosing position. A first envelope detector is disposed upstream from the flap opener in an envelope conveyance direction and detects both ends of the envelope in the envelope conveyance direction. A second envelope detector is disposed downstream from the flap opener in the envelope conveyance direction and detects both ends of the envelope in the envelope conveyance direction in an open state in which the flap opens. A controller determines the open state of the flap based on a first detection result sent from the first envelope detector and a second detection result sent from the second envelope detector. The controller performs troubleshooting for enclosing the enclosure into the envelope if the controller determines that the open state of the flap is faulty.