Sheet Orientation Device with Pivoting Rollers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sheet alignment devices for machines processing thin, flat materials like paper, cardboard, or film require separate steps to adjust the speed and rotation of transport rollers, making the process complex and inefficient for correcting sheet alignment.
Innovation Solution
A sheet alignment device with adjustable alignment modules featuring rollers with drive devices that can pivot and adjust speed direction, combined with sensors for precise position detection and a pressure module to manage friction, allowing for simultaneous correction of sheet alignment with reduced effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate steps are used to adjust the speed and rotation of transport rollers, then the alignment can be corrected, but the process becomes complex and inefficient
Solution Approach 1:
The patent combines the previously separate functions of speed adjustment and rotation correction into a single aligning module. Each aligning module contains both a drive device for speed control and a pivoting device for rotation control, integrated around a common aligning roller. This merging of functions reduces the number of separate components and simplifies the overall alignment process while maintaining precise alignment capability.
Solution Approach 2:
The aligning roller serves multiple functions simultaneously: it transports the sheet forward while also correcting lateral position and rotational alignment. The integrated module can perform speed adjustment, position correction, and rotation correction in a single operational unit, making the system more versatile and efficient.
2Manufacturing precision
If multiple separate alignment devices are used, then comprehensive alignment correction is achieved, but the device construction becomes more complex
Solution Approach 1:
The patent integrates speed control, position correction, and rotation correction into unified aligning modules. Each module combines a drive device, pivoting device, and aligning roller into a single operational unit, reducing the number of separate devices needed and simplifying the overall system construction and operation.
3Adaptability or versatility
If the aligning roller is fixed in position, then the structure is simpler, but it cannot adapt to sheets with different dimensions
Solution Approach 1:
The aligning roller is made dynamically adjustable through the pivoting device that allows rotation about a pivot axis perpendicular to the feed path. This dynamic positioning capability enables the roller to adapt its angle and position according to the specific alignment needs of different sheet dimensions and orientations, transforming a static structure into an adaptive system.
Solution Approach 2:
The system allows change in the operational parameters of the aligning roller, specifically its rotational angle and position, to accommodate different sheet dimensions. The pivoting device enables parameter adjustment without requiring complex structural changes to the overall module.
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
This solution simplifies the alignment process by integrating speed and rotation control into a single step, enabling precise and efficient alignment of sheets with different dimensions and orientations, ensuring accurate synchronization with substrates during processing.
Implementation Method 1
The alignment roller preferably interacts with a counter roller so that friction is reduced.
Implementation Method 2
The pressure module ensures that the frictional forces required to align the sheet act between the alignment roller and the sheet.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The invention relates to a sheet orientation device (5) for a machine for processing sheets (B) made of a thin flat material, such as paper, paperboard or film, with a feed section, at least one sensor (30, 32) for detecting the position and/or orientation of the sheet (B), and at least two orientation modules (10), which each have an orientation roll (12) associated with a drive device (14), wherein each orientation module (10) is associated with a pivot device (16), by means of which the orientation roll (10) can be pivoted about a pivot axis (A) perpendicular to the feed section. The invention also relates to a machine for processing sheets (B) made of a thin, flat material, such as paper, paperboard or film, wherein a sheet orientation device (5) of the above-mentioned kind is provided. The invention lastly relates to a method for orienting a sheet (B) made of a thin, flat material, such as paper, paperboard or film, by means of the following steps: - the orientation of the sheet (B) is detected, - the sheet (B) is accelerated, rotated and/or displaced laterally on a feed section by means of at least two orientation rolls (12) that are controllable in respect of their circumferential speed and orientation.