Cutting Apparatus Knife Clearance Adjustment Mechanism
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Solution Overview
Problem
Existing cutting apparatuses lack a mechanism to adjust the clearance between the upper and lower knives, which can lead to inconsistent cutting performance due to individual differences in apparatuses or usage states.
Innovation Solution
A cutting apparatus with a first knife, a second knife fixed at a predetermined position, a fixing member, a fixing mechanism to detachably fix the first knife, and a motion mechanism to move the fixing member between non-cutting and cutting positions, allowing for adjustment of the clearance between the knives in the orthogonal direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the upper knife is lowered onto the stationary lower knife to perform cutting, then the cutting function is achieved, but the clearance between the knives cannot be adjusted leading to inconsistent cutting performance
Solution Approach 1:
The patent makes the previously stationary lower knife movable by introducing a motion mechanism. The lower knife can now be moved in the vertical direction to adjust the clearance with the upper knife, transforming a static system into a dynamic one that adapts to different cutting requirements and compensates for individual differences in apparatuses.
Solution Approach 2:
The patent introduces a pressing plate as an intermediary component between the upper knife and lower knife. The pressing plate transmits the pressing force while allowing for clearance adjustment, serving as a mediator that enables the motion transmission without direct contact between the knives during adjustment.
2Reliability
If the installed positions of the lower knife and upper knife are adjusted to optimize clearance, then cutting performance is improved, but the operation becomes difficult and time-consuming
Solution Approach 1:
The motion mechanism enables dynamic adjustment of the lower knife position during operation. Instead of requiring complex repositioning of both knives, the operator can simply move the lower knife vertically to achieve the desired clearance, significantly simplifying the adjustment process.
Solution Approach 2:
The system allows for self-adjustment of the clearance through the motion mechanism. The operator can independently adjust the lower knife position without needing to coordinate multiple adjustment operations, making the process more intuitive and easier to perform.
3Force
If the pressing plate moves vertically with the upper knife to push the lower knife, then the cutting force is transmitted, but lateral adjustment of the lower knife becomes difficult
Solution Approach 1:
The patent decouples the vertical motion function from the lateral adjustment function. The lower knife can be moved vertically by the motion mechanism for clearance adjustment, while lateral positioning can be independently adjusted, separating the two adjustment directions to eliminate interference.
Solution Approach 2:
The adjustment functions are segmented into independent operations: vertical clearance adjustment through the motion mechanism and lateral positioning through separate adjustment means. This segmentation allows each adjustment to be performed independently without interfering with the other.
Data Source
AI summary
Provided is a cutting apparatus including: an upper knife; a lower knife fixed at a predetermined position; a fixing member to which the upper knife is fixed; a fixing mechanism configured to detachably fix the upper knife at a fixing position of the fixing member; and a motion mechanism configured to move the fixing member between a non-cutting position and a cutting position in the vertical direction to perform switching between a non-cutting state where a first tip of the upper knife is spaced apart in the vertical direction from a second tip of the lower knife and a cutting state where the first tip passed by the second tip, and the fixing mechanism can adjust the fixing position in a first direction that is orthogonal to the vertical direction and in which the first tip and the second tip come close to or move away from each other.