Carton Sealer Tape Cutter With Triangular Blade for Glass-Fiber Tape
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Solution Overview
Problem
Existing tape cutting devices struggle to efficiently cut tapes with glass fiber ribs due to their higher toughness, as traditional cutoff methods are inadequate.
Innovation Solution
A tape cutting device with a movable blade having an isosceles triangle cutting edge, a fixed blade, and an eccentric wheel mechanism that reduces cutting resistance and torque requirements, allowing for smooth and energy-efficient cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional jagged cutter is used to cut the tape by scraping and cutting through tape stretching, then the cutting mechanism is simple, but it cannot effectively cut tapes with glass fiber ribs due to their higher toughness
Solution Approach 1:
The cutting edge is segmented into multiple parts: a first edge part and a second edge part, where the second edge part is sunken to form a V-shaped groove. This segmentation allows the cutting edge to interact with the tape at multiple points simultaneously, improving cutting effectiveness on tough materials like glass fiber reinforced tapes while maintaining operational simplicity
Solution Approach 2:
The cutting edge transitions from a traditional single-plane design to a three-dimensional V-shaped groove structure. The sunken second edge part creates a dimensional change that allows the cutter to engage the tape more effectively, providing better cutting action on high-toughness tapes without complicating the overall cutting mechanism
2Reliability
If a cutter with higher cutting resistance is used to cut tough tapes, then the cutting effectiveness improves, but the torque required to drive the cutter increases
Solution Approach 1:
By segmenting the cutting edge into multiple parts with the second edge part sunken to form a V-shaped groove, the cutting force is distributed across multiple contact points. This segmentation reduces the peak torque required at any single point while maintaining effective cutting action on tough tapes
Solution Approach 2:
The V-shaped groove geometry changes the cutting parameters by creating a more efficient cutting angle and force distribution. This parameter change allows the cutter to maintain high cutting effectiveness on tough tapes while reducing the torque requirement compared to traditional single-edge cutters
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 device effectively cuts tapes with glass fiber ribs by minimizing cutting resistance and reducing the torque needed, facilitating easy and energy-conserving operation.
Implementation Method 1
the eccentric wheel is fixed on an output shaft of the cutting motor, and an eccentric pin is fixed on a position, deviated from the center of a circle, on the surface of the eccentric wheel; and a position close to the middle of the swing rod is limited to rotate relative to the cutter holder, one end of the swing rod is limited to rotate relative to the movable blade, the other end of the swing rod is provided with a waist-shaped hole, and the waist-shaped hole sleeves the outside of the eccentric wheel, so that the eccentric pin pushes the waist-shaped hole of the swing rod to swing
Data Source
AI summary
The present disclosure provides a tape cutting device in a carton sealer. The device includes a cutter holder, a fixed blade and a movable blade. The movable blade slides to the fixed blade to cut off a tape, and a cutting edge of the movable blade is designed to be of an isosceles triangle structure. This way can reduce a resistance caused by cutting the tape by using the movable blade, and is also beneficial to the conservation of electric energy required by a cutting motor. In addition, by sensing a position of an eccentric pin through a distance sensor in a process that the tape is cut off, the movable blade can automatically reset to be away from the fixed blade, which is convenient for re-packaging and cutoff.