Reversible Adhesive Apparatus with Shear-Activated Base
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Solution Overview
Problem
Industrial automation systems require a reliable and efficient method for reversible adhesion to facilitate easy attachment and detachment of objects, as existing adhesives lack the necessary robustness and power efficiency for repeated use.
Innovation Solution
A reversible adhesive apparatus featuring a base with concave and convex shapes or a raised portion and surrounding portion, combined with a flexible adhesive layer that activates adhesion under gravity-induced shear force and deactivates it with a second shear force, allowing for repeatable and robust attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional adhesives are used for mounting objects, then strong adhesion is achieved, but the ability to reversibly attach and detach objects is lost
Solution Approach 1:
The adhesive layer transitions from a static bonding state to a dynamic reversible state through shear force application. The adhesive material changes its bonding characteristics based on applied force, enabling it to switch between strong adhesion and easy release modes, thus resolving the contradiction between reliable adhesion and reversible operation.
Solution Approach 2:
The adhesive properties are changed by varying the shear force parameter. Under low shear force (gravity-induced), the adhesive maintains strong bonding for reliable mounting. When a second shear force is applied, the adhesive parameters change to enable easy detachment, thus achieving both reliable adhesion and reversible operation.
2Force
If strong gripping force is applied to hold objects, then secure attachment is achieved, but damage to sensitive products occurs
Solution Approach 1:
The adhesive force is distributed locally across the contact surface between the adhesive layer and the object. This distributed local pressure prevents concentration of force at specific points, thereby securing the object without causing damage to sensitive products while maintaining strong overall attachment.
3Reliability
If complex mounting devices are used for secure attachment, then reliable mounting is achieved, but device complexity increases
Solution Approach 1:
The complex mechanical mounting mechanisms (screws, clips, fasteners) are extracted and replaced with a simple adhesive layer that provides equivalent or superior mounting reliability. The base structure with concave/convex shapes provides the necessary mechanical support, while the adhesive layer handles the attachment function, simplifying the overall device.
Solution Approach 2:
The adhesive layer serves multiple functions simultaneously: it provides secure mounting, enables easy detachment, distributes force evenly, and works with various object types. This multi-functionality replaces what would otherwise require multiple separate components, reducing device complexity while maintaining reliability.
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
Enables efficient and repeatable adhesion in industrial automation applications, reducing the need for traditional mounting devices and minimizing gripping force on sensitive products, while simplifying processes like tooling and sensor mounting.
Implementation Method 1
The adhesive layer configured to provide reversible adhesion on a top surface of the adhesive layer
Implementation Method 2
activates adhesion under gravity-induced shear force
Data Source
AI summary
A reversible adhesive apparatus includes a base and an adhesive layer. The base is configured with a series of concave and convex shapes at a top surface of the base according to some embodiments. The base is configured with a raised portion and a surrounding portion at a top surface of the base according to some other embodiments. The adhesive layer is disposed on top of the base. The adhesive layer configured to provide reversible adhesion on a top surface of the adhesive layer.