Sheet Bonding Press With Inclination Correction for Uniform Pressure
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Solution Overview
Problem
Existing sheet bonding apparatuses face issues with bonding failures due to pressure unevenness caused by geometrical tolerance, such as deviation of parallelism between the pressurizing and receiving members, leading to incomplete bonding of sheets.
Innovation Solution
A sheet bonding apparatus with a pressurizing member, receiving member, heating portion, pressurizing mechanism, and inclination correction mechanism to correct relative inclination between the pressurizing and receiving members, ensuring uniform pressure distribution during heat-and-press bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heat-and-press bonding is performed using a pressurizing member and receiving member, then sheets can be bonded together, but pressure unevenness occurs due to geometrical tolerance and deviation of parallelism between members
Solution Approach 1:
The patent changes the physical state of the pressurizing member from rigid to flexible by covering it with an elastic member. This allows the pressurizing surface to deform and adapt to the receiving member's surface, compensating for geometrical tolerances and parallelism deviations. The elastic member's ability to change its deformation state enables uniform pressure distribution across the bonding area, resolving the contradiction between bonding reliability and pressure uniformity.
2Force
If rigid pressurizing members are used for heat-and-press bonding, then bonding force can be applied, but pressure distribution becomes uneven due to apparatus tolerance
Solution Approach 1:
The patent applies a flexible elastic member (such as a rubber sheet or silicone sheet) to cover the pressurizing member's surface. This flexible layer acts as a compliant interface that can deform under load, distributing the pressurizing force evenly across the receiving member's surface regardless of geometrical imperfections. The flexible shell absorbs the effects of manufacturing tolerances while maintaining sufficient bonding force.
3Manufacturing precision
If precise parallelism between pressurizing and receiving members is maintained, then uniform pressure can be achieved, but apparatus complexity and manufacturing difficulty increase
Solution Approach 1:
The elastic member on the pressurizing member's surface performs self-adjustment through elastic deformation. When pressure is applied, the elastic member automatically deforms to conform to the receiving member's surface geometry, compensating for parallelism deviations without requiring external adjustment mechanisms. This self-service capability reduces the need for high-precision apparatus manufacturing and complex alignment systems.
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 bonding failures by maintaining uniform pressure across the sheet stack, ensuring consistent and reliable bonding of sheets.
Implementation Method 1
a heating portion configured to heat the pressurizing member
Implementation Method 2
a pressurizing mechanism configured to press the pressurizing member against the sheet stack
Data Source
AI summary
A sheet bonding apparatus includes a pressurizing member configured to pressurize a sheet stack, a receiving member configured to receive a pressurizing force of the pressurizing member and nip the sheet stack together with the pressurizing member, a heating portion configured to heat the pressurizing member, a pressurizing mechanism configured to press the pressurizing member against the sheet stack, and an inclination correction mechanism configured to correct relative inclination between the pressurizing member and the receiving member in a case where the pressurizing member pressurizes the sheet stack.