Article Rejecting System Automatic Timing Setup

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Solution Overview

Problem

In article rejecting systems, setting automatic timing for rejecting motions is time-consuming and inefficient, as operators must estimate and input delay times manually, making it difficult to determine appropriate timing without system operation.

Innovation Solution

An article rejecting system that includes a manual input unit allowing operators to set automatic timing based on manual timing during system operation, with the control unit storing conveyance speed and detection-to-input time for expedited setting and potential adjustments, and optionally using an inspection unit as a detection unit to omit photoelectric sensors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If an operator estimates and inputs delay time manually, then the automatic timing can be set, but the setting process becomes time-consuming and inefficient

Engineering Contradiction:
Improveease of setting automatic timingVSAvoidtime required for setting automatic timing
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The system automatically measures the actual delay time between detection unit detection and rejecting unit action by using timestamps from both units. This feedback mechanism eliminates the need for manual estimation and allows the control unit to automatically calculate and apply the correct delay time, significantly reducing setup time while maintaining accuracy

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs self-configuration by automatically measuring its own timing characteristics. The control unit autonomously determines the appropriate delay time by comparing detection timestamps with rejection timestamps, eliminating the need for operator intervention and manual timing estimation procedures

Inventive Principle:
Principle #25Self-service

2Measurement precision

If the operator visually determines the manual timing, then the automatic timing can be accurately set, but the system requires manual operation during setup

Engineering Contradiction:
Improveprecision of timing settingVSAvoidautomation of timing setting
Core Design Contradiction:
Measurement precisionVSExtent of automation

Solution Approach 1:

The control unit acts as an intermediary that bridges manual visual determination and automatic timing execution. It records timestamps from both detection and rejection events, automatically calculates the precise delay time, and applies this timing automatically in production mode, combining the accuracy of manual visual determination with the efficiency of automation

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system performs preliminary timing measurement and calculation during setup phase by recording actual detection and rejection timestamps. This preliminary action establishes the correct delay time parameter that is then automatically applied during normal operation, eliminating the need for continuous manual intervention

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3369489B1Article rejecting system
Publication Date: 2020.05.13 ISHIDA CO LTD
  • EP3369489B1 patent drawingFigure 1
  • EP3369489B1 patent drawingFigure 2
  • EP3369489B1 patent drawingFigure 3

AI summary

An article rejecting system includes: a conveyance unit that conveys an article along a conveying direction; a detection unit that detects the article which is conveyed by the conveyance unit; a rejecting unit that is provided on a downstream side of the detection unit in the conveying direction and performs a rejecting motion for rejecting the article which is conveyed by the conveyance unit; a control unit that controls the rejecting unit such that the rejecting motion is performed at a predetermined automatic timing when the detection unit detects the article; and an input unit that accepts input of a manual operation for causing the rejecting unit to perform the rejecting motion at a manual timing. The control unit sets the automatic timing based on the manual timing, if the input unit accepts the input of the manual operation when the detection unit detects the article.