Pivotable Shear Blades for Self-Clamping Tire Cutting
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Solution Overview
Problem
Existing methods for breaking down heavy-duty tires, such as those used in construction and mining, require additional lateral holding means during cutting, which complicates the process and is not easily adaptable to different tire sizes.
Innovation Solution
A machine with pivotable blades forming shears, where cutting starts at the distal end of the blades, allowing the tire part to be clamped and cut without additional holding means, and a method involving support means and a cutting station with adjustable drive members to accommodate various tire sizes and configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cutting starts near the hinge of the blades, then the cutting action can be initiated, but additional lateral holding means are required to secure the tire during cutting
Solution Approach 1:
The patent inverts the conventional cutting approach by making the distal ends of the blades the starting point of cutting action, rather than starting near the hinge. This inversion allows the blade geometry itself to provide the clamping action, eliminating the need for separate lateral holding means and simplifying the overall device structure.
Solution Approach 2:
The blade geometry is designed to be self-clamping, where the converging sides of the blades automatically secure the tire part during the cutting motion. The blades serve their own function of holding the workpiece without requiring external holding devices, making the system self-sufficient and reducing complexity.
2Ease of manufacture
If conventional shears with cutting starting near the hinge are used, then cutting can be performed, but the device is not easily adaptable to different tire sizes
Solution Approach 1:
The patent introduces adjustable elements that allow the cutting device to dynamically adapt to different tire sizes. The ability to adjust the positioning and orientation of the blades enables the same device to effectively process various tire dimensions, enhancing versatility while maintaining manufacturing simplicity.
Solution Approach 2:
The cutting device is designed with universal capabilities to handle multiple tire sizes and configurations through adjustable mechanisms. The distal-end cutting approach combined with adjustable positioning allows a single device to perform multiple functions across different tire types, improving adaptability without requiring multiple specialized devices.
3Reliability
If additional lateral holding means are used during cutting, then the tire can be secured, but the overall process becomes more complex and less efficient
Solution Approach 1:
The blade design incorporates self-clamping geometry where the converging sides of the blades automatically secure the tire part during cutting. This self-service mechanism eliminates the need for separate holding devices, maintaining reliable tire securing while streamlining the process and improving overall cutting efficiency.
Solution Approach 2:
The functions of cutting and holding are merged into a single integrated action performed by the blades themselves. The blades simultaneously cut and secure the tire part through their geometric design, eliminating the need for separate holding means and thereby improving productivity without compromising reliability.
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
Enables efficient cutting of tire sidewalls and caps into pieces without additional holding means, facilitating easier disposal and adapting to different tire sizes and configurations, reducing the force required for cutting and ensuring precise cuts.
Implementation Method 1
cutting means, disposed at said cutting station, for cutting said part so as to break it down into pieces, the cutting means comprising a first blade and a second blade that are pivotable in a hinged manner with respect to one another at a fulcrum and cooperate so as to form shears
Data Source
AI summary
The machine for breaking a part of a tire down into pieces includes a frame and a tire support which is adapted to support a part of the tire. The machine also has a supplying device which is configured to feed the part of the tire to a cutting station which includes a cutting device. The cutting device has a first blade and a second blade that are pivotable with respect to one another at a fulcrum. At least one of the first and second blades has a concave shape and cooperates with the other blade to keep the part of the tire inside of the blades. The supplying device includes a movable unit which can pivot about a vertical axis between first and second positions.