Conveyor Belt Alignment via Separation Roller Tilt
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Solution Overview
Problem
The existing belt alignment devices, particularly the shaft inclination method, face challenges in maintaining reliable sheet conveyance when multiple conveyor belts are used in succession, leading to potential image failures and paper jams due to misalignment and uneven landing of the sheet-type medium between conveyor belts.
Innovation Solution
A shaft moving device that tilts the rotary shaft of the separation roller to restrict belt mistracking within a predetermined range, using a belt deviation detector and shaft inclining member to adjust the position of the secondary transfer belt, ensuring smooth transfer between conveyor belts without requiring a dedicated drive source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a shaft inclination method is used to correct belt mistracking, then belt alignment is improved, but sheet-type medium conveyance reliability deteriorates due to uneven landing between conveyor belts
Solution Approach 1:
The invention makes the shaft inclination adjustable rather than fixed. The shaft inclining member can be positioned at different locations along the shaft axis, allowing dynamic adjustment of the inclination angle and direction. This enables the system to adapt to different belt mistracking conditions while maintaining reliable sheet conveyance by optimizing the inclination parameters for each specific situation.
Solution Approach 2:
The invention changes the parameters of shaft inclination (angle, direction, and magnitude) to optimize both belt alignment and sheet conveyance. By adjusting the position of the shaft inclining member, the system can modify the inclination parameters to correct belt mistracking while ensuring that the inclination remains within ranges that prevent uneven sheet landing and maintain conveyance reliability.
2Manufacturing precision
If the separation roller shaft is tilted to correct belt mistracking, then belt position accuracy is improved, but sheet landing smoothness deteriorates due to excessive inclination
Solution Approach 1:
The shaft inclining member can be dynamically positioned at different locations along the shaft axis, allowing the system to adjust the effective inclination angle. This dynamic adjustment capability enables the system to achieve sufficient belt position accuracy while keeping the inclination angle within ranges that maintain smooth sheet landing, preventing shock and image failures.
Solution Approach 2:
The invention allows adjustment of the inclination parameters by changing the position of the shaft inclining member. This enables optimization of the inclination angle to achieve the minimum necessary correction for belt alignment while staying below thresholds that would cause uneven sheet landing, thus resolving the contradiction between position accuracy and landing smoothness.
3Measurement precision
If a detector-based belt alignment device is used, then belt mistrtracking detection accuracy is improved, but device complexity increases
Solution Approach 1:
The shaft inclining member is designed to be self-adjusting through its mechanical interaction with the shaft. When the shaft is inclined, the shaft inclining member automatically shifts position along the shaft axis, creating a self-correcting mechanism that reduces the need for complex external detection and control systems while maintaining effective belt alignment.
Solution Approach 2:
The shaft inclining member acts as an intermediary between the shaft and the belt alignment function. By positioning this member at different locations along the shaft, the system can achieve belt alignment through mechanical inclination without requiring complex detectors and control systems, thus reducing overall device complexity while maintaining alignment effectiveness.
Data Source
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AI summary
A conveyor system includes a first conveyor belt (61) entrained about a separation roller (63) and a support roller (62) disposed upstream from the separation roller (63), a second conveyor belt (17) entrained about a first roller (17A) disposed at an uppermost stream in a transport direction of a sheet-type medium and a second roller disposed downstream therefrom, a belt alignment device (70) to tilt a rotary shaft (63a) of the separation roller (63) to restrict a range of belt mistracking of the first conveyor belt (61) in a width direction thereof within a predetermined range, and a restriction member (72a, 68b) to restrict an amount of inclination of the rotary shaft (63a) such that a hypothetical extended plane (A), which is a hypothetical extension of the outer circumferential surface of the first conveyor belt (61) between the separation roller (63) and the support roller (62) to a downstream side in the transport direction, does not contact a rotational center axis of the first roller (17A).