Removable Cutting Table for Waste Comminuting Machine Maintenance
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Solution Overview
Problem
Existing comminuting machines require complex and expensive replacement of fixed knives and tables, as they are integrated into the machine's frame, necessitating complete disassembly for maintenance and size adjustments.
Innovation Solution
A comminuting machine design featuring a removable table supported by a translatable frame, allowing for manual or motorized movement, with inclined metal sheets to accommodate fixed knives, enabling easy replacement and maintenance without disassembling the rotatory shafts or frame, and using a linear actuator for efficient table positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the fixed knives are integrated into the machine frame, then the machine structure is stable and robust, but the replacement and maintenance of fixed knives becomes complex and expensive requiring complete disassembly
Solution Approach 1:
The machine is divided into separate functional modules: the frame with rotating shafts remains fixed and stable, while the table with fixed knives becomes a detachable module. This segmentation allows the stable frame structure to be maintained while enabling easy replacement of the table module without disassembling the entire machine.
Solution Approach 2:
The table supporting the fixed knives is extracted from the frame structure as a separate removable component. This extraction allows the table to be easily removed and replaced independently, solving the maintenance complexity issue while the frame remains intact and stable.
2Stability of the object's composition
If the table is fixed to the frame, then the machine structure is rigid and stable, but the replacement of the table becomes complex requiring complete disassembly
Solution Approach 1:
The machine structure is segmented into a fixed frame portion and a removable table portion. The frame maintains its rigidity and stability for supporting rotating shafts, while the table is designed as a separate module that can be easily detached and replaced without affecting the frame structure.
Solution Approach 2:
The table's connection to the frame transitions from a fixed rigid connection to a dynamic removable connection. This allows the table to be easily inserted and removed from the frame, reducing replacement complexity while maintaining structural stability during operation.
3Strength
If a heavy table structure is used to support fixed knives, then the table is robust and stable, but the drive unit must withstand high stress from material accumulation
Solution Approach 1:
The table structure incorporates a porous or perforated design with openings that allow comminuted material to pass through during operation. This prevents material accumulation on the table surface, significantly reducing the stress burden on the drive unit while maintaining sufficient table robustness to support the fixed knives.
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
Simplifies the process of replacing or adjusting fixed knives and tables, reducing time, cost, and material requirements, while maintaining machine integrity and efficiency in processing waste materials.
Implementation Method 1
a linear actuator is advantageous, connected between the frame and the support, and adapted to move the support
Implementation Method 2
The comminuted pieces fall by gravity and are then collected under the table
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A comminuting machine (MC) for waste material is described. It comprises a frame comprising a cutting table (60) equipped with fixed knives (22, 24), a shaft (30a, 30b) rotatably mounted in the frame and on the table, and equipped with an array of rotating blades (20a, 20b) radially projecting from the shaft. The rotating knives to cut the material have a face adjacent to, and adapted to cooperate with, a fixed knife. To improve the machine the frame comprises a housing (AL) for the table, the table being insertable and removable from in said housing independently from the shaft and the rest of the frame.