Pellet Press Cutting Arrangement Angled Edges
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Solution Overview
Problem
Existing pellet presses produce a significant number of excessively long pellets and require a large number of cutting knives with a large distance between them, leading to increased adjustment effort and potential blockages.
Innovation Solution
A cutting arrangement with angled or curved cutting edges and guide means that impart a twist to pellets, allowing them to be transported out of the cutting area and reducing the need for large gaps between cutting edges, thus minimizing excessively long pellets and adjustment effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a large distance between cutting blades is used, then fewer cutting blades are required, but the production of uniformly long pellets is compromised and over-long pellets increase
Solution Approach 1:
The cutting arrangement is divided into multiple cutting blades arranged at specific circumferential positions. Each cutting blade independently cuts pellets at different locations, allowing for better distribution of cutting actions and improved pellet length uniformity while reducing the total number of blades needed compared to a single-blade design with large spacing.
Solution Approach 2:
The cutting blades are arranged not only radially but also at specific circumferential positions around the ring die. This multi-dimensional arrangement allows for optimized cutting coverage with fewer blades, improving both pellet length uniformity and reducing the number of cutting blades required.
2Device complexity
If multiple cutting blades with large circumferential distance are used, then the number of cutting blades is reduced, but the adjustment effort increases
Solution Approach 1:
The cutting arrangement uses multiple cutting blades positioned at optimized circumferential intervals. This segmentation allows each blade to handle a specific zone, reducing the need for large adjustments to achieve uniform pellet length across all positions.
Solution Approach 2:
The cutting blades are positioned at specific circumferential angles (e.g., 0°, 120°, 240°) and radial distances from the ring die. These parameter optimizations allow for reduced adjustment effort while maintaining effective cutting performance with fewer blades.
3Device complexity
If conventional cutting arrangement is used, then the structure is simple, but blockages occur in the space between ring die and cutting device
Solution Approach 1:
The cutting blades are positioned radially outward from the ring die at specific circumferential positions, creating a curved cutting path that follows the rotation of the ring die. This curved arrangement prevents material buildup and blockages by ensuring continuous clearance between the cutting blades and the ring die surface.
Solution Approach 2:
Multiple cutting blades are distributed around the ring die at specific circumferential positions, creating multiple clearance zones. This segmentation prevents material accumulation in any single area, thereby reducing blockages while maintaining a relatively simple overall structure.
Data Source
Figure 1
Figure 2(a)~2(c)
Figure 3(a)~3(c)
AI summary
To provide a cutting arrangement (1) for a pellet press with fastening means (7, 8) for attaching to a stationary housing part of the pellet press at a radial distance (32) from a ring die (33) rotatably mounted in the pellet press in a direction of rotation (12) and at least one cutting means (2, 3) for cutting pellets (38) emerging from openings (34) in the ring die (33) to length, as well as a pellet press for pressing pellets (38) starting from a pressing material (36), with a ring die (33) rotatably mounted in a direction of rotation (12), which has substantially radial through-holes (34) and forms a pressing chamber in its interior into which the pressing material (36) can be fed, pressing means (35) for pressing the pressing material (36) through the through-holes (34) to form the pellets (38), and a stationary housing part,To specify a cutting arrangement (1) with at least one cutting element (2, 3) for cutting pellets (38) emerging from openings in the ring die (33) to length, which avoids the disadvantages of the prior art and allows the production of uniformly long pellets with a reduced proportion of overlong pellets, and which requires less adjustment effort, it is proposed that the cutting elements (2, 3) have a cutting edge (16, 22) that is angled and/or curved relative to an axial direction.