Envelope Flap Detection and Reopening for Reliable Enclosing
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Solution Overview
Problem
Existing systems face challenges in efficiently enclosing and sealing enclosures in envelopes while ensuring proper orientation and addressing flap opening abnormalities during the processing of folded sheets.
Innovation Solution
An envelope processing apparatus equipped with a flap opener, first and second envelope detectors, and circuitry to manage flap opening operations based on detection results, ensuring proper orientation and re-opening if abnormalities occur.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flap opener executes the opening operation of the flap during conveyance, then the envelope can be properly enclosed, but if the flap is not opened properly, the enclosing process fails and requires re-processing
Solution Approach 1:
The patent employs envelope detectors to monitor the flap opening state and provides feedback to the control circuitry. When the flap is not opened properly (abnormal state detected), the system automatically re-executes the opening operation. This feedback mechanism ensures reliable flap opening while minimizing manual intervention and reprocessing time.
Solution Approach 2:
The flap opening operation is performed in advance during the conveyance process before the enclosing operation. By opening the flap preliminarily and verifying its state during conveyance, the system prevents enclosing failures and avoids the need for complete reprocessing, thus saving time.
2Productivity
If the envelope is conveyed to the enclosing position, then the enclosing operation can be performed, but the flap may not be opened properly causing abnormal enclosing state
Solution Approach 1:
The control circuitry receives detection results from envelope detectors positioned at different locations along the conveyance path. This feedback allows the system to verify flap opening status before and during the enclosing operation, ensuring reliability while maintaining continuous processing flow for high productivity.
Solution Approach 2:
The flap opening operation is executed rapidly during the conveyance process rather than as a separate preliminary step. The system rushes through the opening action during conveyance and immediately proceeds to enclosing if the opening is successful, maximizing productivity while the feedback mechanism ensures reliability.
3Device complexity
If the flap opener operates during conveyance, then the envelope processing is streamlined, but detection of abnormal flap states becomes more difficult
Solution Approach 1:
The detection system is segmented into multiple envelope detectors positioned at different locations along the conveyance path. This segmentation allows the system to monitor flap state at various stages, making detection easier despite the dynamic conveyance environment, while the overall system remains relatively simple.
Solution Approach 2:
The envelope detectors serve as intermediaries between the flap opening mechanism and the control circuitry. These detectors translate the physical flap state into detectable signals during conveyance, simplifying the detection task while maintaining low system complexity.
Data Source
AI summary
An envelope processing apparatus includes a flap opener, a first envelope detector, a second envelope detector, and circuitry. The flap opener opens a flap of an envelope during conveyance of the envelope in an envelope conveyance passage in which the envelope is conveyed to an enclosing position. The first envelope detector detects the envelope at a position upstream from the flap opener in a conveyance direction of the envelope. The second envelope detector detects the envelope at a position downstream from the flap opener in the conveyance direction. The circuitry causes the flap opener to execute an opening operation of the flap of the envelope conveyed to the enclosing position and causes the flap opener to execute the opening operation of the flap again when an opening-and-closing state of the flap determined based on detection results of the envelope by the first and second envelope detectors is abnormal.