Soft Pack Tape Applicator Pressure Control
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Solution Overview
Problem
Conventional tape heads apply strong pressure during sealing, which can distort soft or under-filled cartons, exacerbated by online shopping and shipping, and existing solutions do not effectively reduce pressure uniformly across the carton.
Innovation Solution
A tape applicator with a pneumatic pressure cylinder and cam mechanism that adjusts pressure applied by the wipe down roll and cut-off mechanism, using sensors or cams to reduce pressure on the carton's closure flaps during sealing, while allowing for conventional taping forces when needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If strong pressure is applied during sealing, then strong bond between tape and carton is ensured, but distortion of carton closure flaps occurs
Solution Approach 1:
The patent applies dynamic pressure control where the pressure applied to the carton varies during the sealing process. A pneumatic cylinder with cam mechanism adjusts the pressure applied by the wipe down roll and cut-off mechanism, applying high pressure only when needed for tape bonding while reducing pressure during other phases to prevent flap distortion.
Solution Approach 2:
The sealing process uses periodic action by applying pressure in distinct phases: high pressure during tape application and bonding, then reduced pressure during wipe down and cut-off operations. This periodic variation in pressure ensures strong bonding when needed while minimizing distortion during other operations.
2Shape
If pressure is reduced to prevent flap distortion, then soft cartons are protected, but bonding strength may be insufficient
Solution Approach 1:
The patent applies local quality by concentrating high pressure locally at the tape-carton interface during the bonding phase, while applying reduced pressure to the overall carton structure during other phases. This localized pressure application ensures strong bonding without causing general flap distortion.
Solution Approach 2:
The system performs preliminary action by positioning the tape and applying initial pressure before the carton structure can be damaged. The cam mechanism is positioned to apply pressure at the precise moment needed for bonding, ensuring both flap integrity and bond strength.
3Shape
If dedicated pressure cylinders are added to reduce pressure on cartons, then flap distortion is reduced, but device complexity increases
Solution Approach 1:
The patent merges the pressure control function into the existing tape applicator structure by integrating a pneumatic cylinder with cam mechanism that controls both the wipe down roll and cut-off mechanism. This combined approach reduces flap distortion while avoiding the need for multiple separate pressure control systems.
Solution Approach 2:
The pneumatic cylinder with cam mechanism serves multiple functions: it controls pressure during tape application, wipe down, and cut-off operations. This multi-functional component reduces flap distortion across all sealing phases without requiring dedicated pressure cylinders for each operation.
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 minimizes distortion of carton closure flaps by reducing pressure applied during sealing, especially on soft or under-filled cartons, while maintaining the ability to apply normal taping forces when required, thus enhancing sealing efficiency without damaging the carton.
Implementation Method 1
a pneumatic pressure cylinder and cam mechanism that adjusts pressure applied by the wipe down roll and cut-off mechanism
Data Source
AI summary
A tape applicator for applying tape to seal a case is disclosed wherein the pressure applied to the top of the case may be significantly reduced by activating an actuator at the appropriate time to lift the application mechanism or assembly and the cut-off mechanism away from the case being sealed.