Laminator Pressure Application Roll for Even Force Distribution
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Solution Overview
Problem
Conventional laminators face challenges in achieving even pressure force distribution during film pressure-bonding onto substrates due to deformation of pressure-bonding rolls, which is exacerbated by the need for frequent replacement and high manufacturing complexity, especially when dealing with thick substrates. Additionally, the existing methods to mitigate deformation either require high processing accuracy or increase the weight and heat capacity of the rolls, making replacement unsafe and inefficient.
Innovation Solution
A laminator design featuring a pair of pressure-bonding rolls with a displaceable second roll and a pressure application roll that can be moved to apply pressure along a line, supported by a rigid support roll and tension rolls, allowing for even force distribution without increasing the diameter of the pressure-bonding rolls, thus reducing deformation and facilitating safer, quicker replacement and efficient processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the diameter of pressure-bonding rolls is increased to enhance rigidity and prevent deformation, then the evenness of pressing force is improved, but the weight and heat capacity of the rolls increase, making replacement unsafe and inefficient
Solution Approach 1:
The system divides the pressure application function into two separate components: the pressure-bonding rolls (first and second rolls) that contact the substrate and film, and the pressure application roll that applies force to the second pressure-bonding roll. This segmentation allows the pressure-bonding rolls to remain lightweight while the pressure application roll provides the necessary rigidity and force.
Solution Approach 2:
The pressure application roll acts as an intermediary component between the actuator and the second pressure-bonding roll. It transmits the pressing force while maintaining system rigidity, allowing the pressure-bonding rolls themselves to remain lightweight and easy to replace.
2Manufacturing precision
If the diameter of pressure-bonding rolls is increased to prevent deformation, then the evenness of pressing force is improved, but the heat capacity increases, delaying cooling and making replacement unsafe
Solution Approach 1:
By segmenting the pressure application function, the pressure-bonding rolls can be kept small in diameter, reducing their heat capacity and allowing rapid cooling after operation, while the pressure application roll provides the necessary structural rigidity.
3Device complexity
If conventional pressure-bonding rolls are used with pressing force applied to both ends, then the structure is simple, but deformation occurs on thick substrates causing uneven pressing force
Solution Approach 1:
Instead of applying pressing force directly to the pressure-bonding rolls at their ends, the system inverts the approach by applying force through the pressure application roll that presses against the second pressure-bonding roll, causing it to deform in a controlled manner that generates even pressure distribution across the substrate.
Solution Approach 2:
The pressure application roll pressing against the second pressure-bonding roll creates a self-adjusting mechanism where the system automatically generates even pressure distribution through the interaction between the rolls, without requiring complex external control mechanisms.
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
This configuration enhances the evenness of pressure force distribution, reduces the weight and heat capacity of the rolls, enabling easier and safer replacement, and maintains high manufacturing efficiency by allowing for continuous lamination processing without prolonged interruptions for spare preparation.
Implementation Method 1
a support roll disposed in parallel with the first pressure-bonding roll below the first pressure-bonding roll and configured to support the first pressure-bonding roll
Implementation Method 2
The pressure application roll is configured to be displaceable in a first direction that is the direction in which the second pressure-bonding roll is displaced toward the first pressure-bonding roll, and a second direction that is the direction in which the second pressure-bonding roll is displaced away from the first pressure-bonding roll, and is also configured to press the second pressure-bonding roll toward one side where the first pressure-bonding roll is located by being displaced in the first direction
Implementation Method 3
The pair of pressure-bonding rolls pressure-bonds the film onto the substrate by sandwiching the substrate and the film between the first pressure-bonding roll and the second pressure-bonding roll
Data Source
AI summary
The present invention provides a laminator capable of improving evenness of a pressing force applied from pressure-bonding rolls to a substrate and a film.The laminator includes a first pressure-bonding roll, and a second pressure-bonding roll disposed above the first pressure-bonding roll and configured to be displaceable in a direction toward (a first direction) and a direction away from (a second direction) the first pressure-bonding roll. The laminator further includes a support roll configured to support the first pressure-bonding roll below the first pressure-bonding roll, and a pressure application roll disposed above the second pressure-bonding roll. The pressure application roll is configured to be displaceable in the first direction and the second direction, and is also configured to press the second pressure-bonding roll toward one side where the first pressure-bonding roll is located by being displaced in the first direction. The laminator further includes a driving mechanism configured to displace the pressure application roll in the first direction and the second direction.