Pillow Block Wedge Adjustment for Feed Roller Straightness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In image forming and processing apparatuses handling wide-width sheets, the deflection of feed rollers due to pressure from driven rollers can lead to sheet skewing and wrinkling, as existing pillow blocks may not reliably maintain the straightness of the rollers, especially when the mounting surface accuracy is low.
Innovation Solution
A pillow block system with a wedge body and adjustable bracket is used to support the feed roller, allowing for height adjustment and secure mounting on a platen surface, ensuring the feed roller remains straight and parallel to the driven rollers, preventing sheet distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional pillow block is used to support the feed roller, then the structure is simple, but the feed roller deflects under pressure from driven rollers causing sheet skewing and wrinkling
Solution Approach 1:
The pillow block is divided into multiple functional components: a mounting bracket for positioning, a pillow block body for support, and a wedge body for height adjustment. This segmentation allows each component to perform its specific function optimally while collectively maintaining feed roller straightness under pressure.
Solution Approach 2:
The wedge body enables dynamic height adjustment of the pillow block body relative to the mounting bracket. This dynamic capability allows the system to compensate for deflection and maintain optimal feed roller position under varying operational conditions, preventing sheet skewing and wrinkling.
2Manufacturing precision
If the pillow block height is fixed, then the structure is simple, but the feed roller cannot be properly positioned on surfaces with low accuracy
Solution Approach 1:
The wedge body is designed to be inserted into a concave part of the pillow block body in advance, enabling height adjustment before the feed roller is mounted. This preliminary positioning action ensures accurate feed roller placement on surfaces with low manufacturing accuracy, compensating for surface irregularities.
Solution Approach 2:
The wedge body changes the vertical position parameter of the pillow block body by being inserted at different angles or depths into the concave part. This parameter adjustment enables precise control of feed roller height, ensuring proper positioning even on surfaces with low manufacturing accuracy.
3Reliability
If the bracket position is fixed in the recording medium feeding direction, then the installation is simple, but the feed roller cannot be adjusted to maintain parallelism with driven rollers
Solution Approach 1:
The bracket is designed with adjustable positioning in the recording medium feeding direction, allowing dynamic repositioning during installation and operation. This dynamic adjustment capability enables the feed roller to be aligned parallel to the driven rollers, maintaining proper geometric relationship under operational conditions.
Solution Approach 2:
The bracket can be temporarily fixed at different positions during installation to facilitate proper alignment of the feed roller with the driven rollers. This preliminary positioning action ensures parallelism is achieved before final securing, preventing sheet distortion during operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The pillow block system effectively maintains the straightness of the feed roller, preventing sheet skewing and wrinkling, even on surfaces with low accuracy, by adjusting the pillow block's position using a wedge mechanism, ensuring consistent and accurate sheet feeding.
Implementation Method 1
a wedge body (320) pushing up a height position of the pillow block main body (310) upon being inserted into a concave part (313)
Data Source
AI summary
A pillow block supporting a feed roller includes a pillow block main body; a wedge body adjusting a height position of the pillow block main body; and a bracket adjustably installing the pillow block main body in a sheet feeding direction on a mounting surface. Further, the pillow block main body includes a reception part to support the feed roller, a concave part though which the wedge body is inserted, and the bracket is temporarily fixed to the mounting surface. Further, the wedge body pushes up the height position of the pillow block main body upon being inserted into the concave part to determine the position of the reception part so that the reception part supports the feed roller from below.