Cutting Roller Paper Pushing Frame Prevents Jam
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Solution Overview
Problem
Existing paper cutting technologies experience paper jam and rolling due to inertia or electrostatic adsorption, where the paper is hooked at the blade tip or absorbed on the blade, causing issues during the cutting process.
Innovation Solution
A cutting roller with a knife groove and a paper pushing frame that slides along the blade, allowing the blade to extend and retract while the paper pushing frame follows, preventing paper jam by pushing the paper off the blade when it retracts, and utilizing rubber sleeves for improved friction to prevent slipping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blade is used to cut paper in existing paper cutting technology, then the cutting function is achieved, but paper jam and paper rolling occur due to inertia or electrostatic adsorption causing the paper to be hooked at the blade tip or absorbed on the blade
Solution Approach 1:
A paper pushing frame is introduced as an intermediary component between the blade and the paper. The paper pushing frame includes a paper pushing groove that guides the paper and a paper pushing component that actively pushes the paper off the blade during retraction, preventing the paper from being hooked or absorbed on the blade.
Solution Approach 2:
The paper pushing frame performs preliminary anti-action by preparing to push the paper off the blade before the blade fully retracts. The paper pushing component is positioned to counteract the electrostatic adsorption and inertia effects that would otherwise cause paper jam, applying force in the opposite direction to prevent the harmful effect from occurring.
2Productivity
If the blade is retracted into the knife groove, then the cutting cycle is completed, but the paper is brought into the knife groove causing paper jam
Solution Approach 1:
The paper pushing frame acts as an intermediary that remains in the knife groove during blade retraction but actively pushes the paper outward. The paper pushing component transfers the paper from the blade surface to a safe position before the blade fully retracts, preventing the paper from being dragged into the knife groove.
Solution Approach 2:
The paper pushing frame performs preliminary action by pushing the paper off the blade surface before the blade completes its retraction into the knife groove. This preliminary push ensures the paper is cleared from the cutting path, preventing subsequent paper jam during the high-speed cutting cycle.
3Stability of the object's composition
If rubber sleeves are added to improve friction and prevent slipping, then paper conveyance stability is enhanced, but device complexity increases
Solution Approach 1:
The rubber sleeves change the friction parameter of the cutting roller surface. By adding rubber material with high friction coefficients, the paper conveyance stability is improved without changing the fundamental structure of the cutting roller, maintaining simplicity while enhancing performance.
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 effectively prevents paper jam and rolling by ensuring the paper is pushed off the blade during retraction, and the rubber sleeves enhance paper conveyance stability, reducing material usage and improving cutting efficiency.
Implementation Method 1
utilizing rubber sleeves for improved friction to prevent slipping
Implementation Method 2
due to inertia or electrostatic adsorption, the paper is hooked at a blade tip or absorbed on the blade
Data Source
AI summary
A cutting roller includes a cutting roller body and a cutting knife assembly, and a knife groove is concavely formed in a peripheral wall of the cutting roller body. The cutting knife assembly includes a knife frame and a paper pushing frame arranged in the knife groove, and a blade mounted on the knife frame. The paper pushing frame is provided with a paper pushing groove matched and sleeved with the blade in a transmission mode, the paper pushing frame is slidably arranged relative to the cutting roller body in a circumferential direction of the cutting roller body. At least one of two ends of the knife frame extending along the knife groove is provided with a linkage component with a swing connecting portion and a driven connecting portion, and the swing connecting portion is rotatably connected with an end face of the cutting roller body.