Log Cutting Machine Grinding Wheel Positioning
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Solution Overview
Problem
Existing cutting machines for logs of web material face challenges in efficiently replacing worn disc-shaped cutting blades, as the process is complex and requires operators to access dangerous areas, leading to prolonged downtime and safety risks.
Innovation Solution
A cutting machine with a controlled approach system for grinding wheels that automatically adjusts and moves towards the new disc-shaped cutting blade, allowing for quick replacement without manual intervention, reducing downtime and safety hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment of grinding wheels is used when replacing cutting blades, then the operator can position the grinding wheels, but the process requires prolonged time and operator access to dangerous areas
Solution Approach 1:
The grinding wheel positioning system performs self-adjustment automatically when a new cutting blade is installed. The system uses sensors to detect the blade position and automatically moves the grinding wheels to the correct positions without requiring manual intervention, thereby reducing downtime and eliminating the need for operators to access dangerous areas.
Solution Approach 2:
The patent replaces manual mechanical adjustment with an automated control system that uses sensors and actuators to position the grinding wheels. This substitution of mechanical manual operation with an automated control system resolves the contradiction by maintaining precise positioning capability while eliminating time loss and safety hazards associated with manual adjustment.
2Manufacturing precision
If manual adjustment of grinding wheels is used, then the operator can position them, but the process is complex and requires access to dangerous machine areas
Solution Approach 1:
The patent replaces complex manual mechanical adjustment procedures with an automated sensor-based positioning system. The system uses sensors to detect blade position and automatically controls grinding wheel movement, maintaining high positioning precision while significantly reducing process complexity and eliminating the need for operators to access dangerous areas.
Solution Approach 2:
The patent introduces sensors and control systems as intermediaries between the cutting blade and grinding wheels. These intermediaries automatically detect blade position and coordinate grinding wheel movement, replacing complex manual adjustment procedures with a simplified automated process that maintains precision while reducing operational complexity.
3Reliability
If frequent grinding of cutting blades is performed, then the cutting edge remains sharp, but the disc-shaped cutting blade gradually erodes and requires replacement
Solution Approach 1:
The patent implements a feedback-based grinding control system that monitors the condition of the cutting blade and automatically adjusts grinding operations. The system detects blade wear parameters and controls the grinding process to remove only the necessary amount of material, thereby maintaining cutting edge sharpness while minimizing blade erosion and extending service life.
Solution Approach 2:
The patent applies partial grinding action by using the automated positioning system to grind only the specific portions of the cutting edge that have become dull, rather than grinding the entire blade surface. This selective partial grinding maintains cutting performance while preserving blade material and extending blade service life.
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 solution enables rapid and safe replacement of worn cutting blades, minimizing machine downtime and operator exposure to hazards, while maintaining efficient cutting operations.
Implementation Method 1
a grinding unit, comprising at least one grinding wheel mounted onto a rotary shaft and co-acting with a side of the disc-shaped cutting blade to grind the cutting edge of the disc-shaped cutting blade
Data Source
AI summary
The machine includes a feeding path for the logs to be cut and a cutting head arranged along the feeding path. The cutting head includes a coupling for a disc-shaped cutting blade and is designed to impart the disc-shaped cutting blade a rotary motion around the axis thereof and a cyclic movement to cut the logs into single rolls, and to allow the logs to move forward along the feeding path. The machine also includes at least a grinding unit, including at least one grinding wheel mounted onto a rotation shaft and co-acting with a side of the disc-shaped cutting blade to grind the cutting edge of the same disc-shaped cutting blade. A controlled approach system is also provided to move the grinding wheel towards the disc-shaped cutting blade.