Sheet Conveying Device Cover Sensor Collision Prevention
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Solution Overview
Problem
Existing sheet conveying devices with two introducing parts often experience frequent restrictions in sheet conveyance due to collisions, reducing convenience and efficiency.
Innovation Solution
A sheet conveying device configuration that includes a conveyer, a first introducing part, a second introducing part, a cover that can be opened or closed, and a cover sensor, where the controller drives the conveyer only when the cover is closed, allowing for selective conveyance of sheets from the first introducing part while preventing simultaneous introduction and collision with the second part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two sensors are provided for detecting sheets introduced from two introducing parts, then collision between sheets can be detected and conveyance can be restricted, but the frequency of conveyance restriction increases and convenience is reduced
Solution Approach 1:
The patent applies the dynamics principle by making the cover movable between open and closed states, and by dynamically controlling the conveyer operation based on the cover state. The conveyer is driven only when the cover is closed, creating a dynamic control mechanism that prevents simultaneous introduction of sheets from both introducing parts while maintaining operational convenience.
2Productivity
If the conveyer is always driven, then sheet conveyance is continuous, but simultaneous conveyance of multiple sheets causes collisions and jams
Solution Approach 1:
The patent applies the preliminary action principle by using the cover state as a pre-condition for driving the conveyer. The cover must be closed before the conveyer starts operating, ensuring that only one sheet can be introduced at a time from the first introducing part while preventing simultaneous introduction from the second introducing part, thus avoiding collisions.
3Adaptability or versatility
If the cover is always open, then sheet introduction is always possible, but collision risk increases when both introducing parts are active
Solution Approach 1:
The patent applies the dynamics principle by making the cover movable between open and closed states, and by dynamically controlling the conveyer operation based on the cover state. The conveyer is driven only when the cover is closed, creating a dynamic control mechanism that prevents simultaneous introduction of sheets from both introducing parts while maintaining operational convenience.
Data Source
AI summary
A sheet conveying device includes: a conveyer configured to convey a sheet; a first introducing part into which a sheet is introduced toward the conveyer; a second introducing part into which a sheet is introduced toward the conveyer, wherein the second introducing part is different from the first introducing part; a cover configured to be displaced between an open state, in which the second introducing part is opened, and a closed state, in which the second introducing part is covered, in a state where the first introducing part is opened; a cover sensor that detects the open-and-closed state of the cover; and a controller, wherein when the cover sensor detects the closed state of the cover, the controller performs a driving process of driving the conveyer.