Pivoting Roller for Conveyor Belt Tracking in Sheet Processing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sheet processing machines face challenges in maintaining stable and uniform conveyor belt guidance, leading to potential fraying or destruction due to lateral deviation, which increases maintenance efforts and reduces conveyor belt lifespan.
Innovation Solution
A sheet processing machine with a transport unit featuring a pivoting roller that automatically adjusts to maintain central guidance of the conveyor belt, using cylindrical rollers to minimize wear and eliminate the need for additional sensors or drives, ensuring continuous reaction to deviations and external influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fixed belt rollers are used, then the structure is simple, but the conveyor belt cannot be automatically centered and lateral deviation occurs
Solution Approach 1:
The patent applies the dynamics principle by making the roller axis pivoting instead of fixed. The roller axis can rotate about a pivot point, allowing the roller to dynamically adjust its position in response to conveyor belt lateral deviations. This dynamic adjustment enables automatic centering of the conveyor belt without requiring complex sensor systems or control mechanisms.
2Reliability
If crowned rollers are used to guide the conveyor belt, then lateral guidance is achieved, but increased wear and higher maintenance efforts occur
Solution Approach 1:
The patent replaces the static crowned roller surface with a dynamic pivoting roller system. Instead of relying on a permanently deformed crowned surface that causes wear, the roller axis pivots to create the necessary guiding effect. This dynamic approach achieves lateral guidance while maintaining uniform roller surfaces, thereby reducing wear and maintenance requirements.
3Measurement precision
If additional sensors and drives are added for belt tracking, then precise control is achieved, but device complexity and cost increase
Solution Approach 1:
The patent applies the self-service principle by designing a system that automatically centers the conveyor belt through the mechanical action of the pivoting roller itself. The roller's ability to pivot creates a self-correcting mechanism that responds to belt deviations without requiring external sensors or control systems. The system uses its own structural flexibility to achieve precise tracking control.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a sheet-processing machine having at least one transport unit (02) for transporting sheets, wherein the at least one transport unit (02) has at least one belt roller (06), which is designed as an inlet roller (06), and at least one belt roller (07), which is designed as a deflection roller (07), which rollers define a sheet transport plane, wherein at least two further belt rollers (08; 09) of the transport unit (02) are arranged outside the transport plane, wherein at least one belt roller (08) of the at least two further belt rollers (08; 09) is designed as a pivot roller (08) which pivots and/or is pivotable about a pivot axis (S), wherein the pivot axis (S) of the pivot roller (08) is an axis normal of the rotation axis (R) of the pivot roller (08). The invention additionally relates to a method for the track-keeping guidance of at least one transport belt (04) of a sheet-processing machine.