Zero-Tension Adhesive Tape Pasting Mechanism for Foil Wrinkle Prevention
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Solution Overview
Problem
Existing adhesive tape pasting devices cause foil to wrinkle and have a poor appearance due to the rebound and shrinkage of double-faced adhesive tape when pasted under tractive force.
Innovation Solution
An adhesive tape pasting device with a zero-tension mechanism, where the unwinding and winding stations operate synchronously without tractive force, using an independent power source for the unwinding station and a cutter assembly with a bending surface to ensure smooth and tension-free adhesive tape application, along with a flat pressing sheet to maintain foil flatness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the double-faced adhesive tape is pasted on a foil under a certain tractive force, then the adhesive tape can be continuously unwound from the unwinding station, but the adhesive tape rebounds and shrinks after pasting, causing the foil to wrinkle and have a poor appearance
Solution Approach 1:
The patent changes the tension parameter from non-zero to zero during the adhesive tape pasting process. By controlling the unwinding and winding stations to operate at the same linear speed, the system maintains zero tension on the adhesive tape during pasting, preventing rebound and shrinkage that would otherwise cause foil wrinkling.
Solution Approach 2:
The patent introduces dynamic control of the unwinding and winding processes, where both stations can actively adjust their operating speeds to maintain synchronization. This dynamic adjustment allows the system to adapt to different pasting conditions while maintaining zero tension, ensuring both continuous operation and foil surface quality.
2Ease of operation
If the unwinding station actively unwinds the double-faced adhesive tape, then the adhesive tape can be supplied to the pasting assembly, but tractive force is applied to the adhesive tape causing rebound and shrinkage
Solution Approach 1:
The patent introduces the winding station as an intermediary element that balances the unwinding process. By having the winding station actively wind the adhesive tape at the same rate it is unwound, the system creates a neutral tension state that eliminates harmful tractive forces while maintaining continuous operation.
Solution Approach 2:
The patent changes the operational parameter of the unwinding station from active unwinding under tension to synchronized unwinding-winding operation. By matching the linear speeds of both stations, the system maintains zero tension on the adhesive tape throughout the pasting process.
3Productivity
If the winding station actively winds the remaining release paper, then the adhesive tape can be continuously processed, but the unwinding and winding speeds may differ causing tension variations
Solution Approach 1:
The patent implements feedback control by monitoring and adjusting the linear speeds of both unwinding and winding stations. The system continuously compares the speeds and makes real-time adjustments to maintain synchronization, ensuring consistent zero tension on the adhesive tape throughout the continuous processing operation.
Solution Approach 2:
The patent employs dynamic speed adjustment capabilities in both the unwinding and winding stations. This allows the system to actively respond to varying processing conditions and maintain synchronized operation, ensuring stable zero tension while maintaining high productivity in continuous adhesive tape processing.
Data Source
AI summary
Provided are an adhesive tape pasting device, mechanism and method for zero-tension double-faced adhesive tape pasting, which belong to foil adhesive tape pasting apparatuses. The adhesive tape pasting device comprises an unwinding station, a winding station, a winding electric motor and an adhesive tape pasting assembly, where after the unwinding station unwinds a double-faced adhesive tape and the adhesive tape pasting assembly pastes an adhesive tape of the double-faced adhesive tape onto a foil, the winding electric motor drives the winding station to wind a remaining release paper of the double-faced adhesive tape. The adhesive tape pasting device further comprises an unwinding driving assembly, where the unwinding driving assembly drives the unwinding station to carry out unwinding work, and in the adhesive tape pasting process, the unwinding work and winding work are carried out synchronously.