Dual Roller Liquid Dispenser for Uniform Coating
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Solution Overview
Problem
Conventional liquid material application methods often result in contamination and uneven application due to excessive material adhering to single rollers, leading to difficulties in rotation and uniform distribution.
Innovation Solution
A dual roller structure within a container, where a first roller unit is in contact with the contents and a second roller unit rotates to transfer the liquid material, ensuring even application and preventing undesired adhesion by spacing the rollers and using a check valve for controlled discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If one roller is used to apply liquid material, then the structure is simple, but the liquid material adheres excessively to the roller causing uneven application and rotation difficulties
Solution Approach 1:
The single roller is divided into two separate rollers: a first roller that contacts the liquid material and a second roller that contacts the skin. This segmentation allows each roller to have a specific function, preventing excessive material accumulation on one roller and enabling even distribution through the interaction between the two rollers.
Solution Approach 2:
The first roller acts as an intermediary between the liquid material reservoir and the second roller. It receives liquid material and transfers it to the second roller, which then applies it to the skin. This intermediary role prevents direct excessive adhesion to the application roller and enables controlled material transfer.
2Device complexity
If one roller is used to apply liquid material, then the device is simple, but the roller swells up with excessive material making it difficult to rotate
Solution Approach 1:
By segmenting the single roller into two separate rollers, the liquid material is distributed across both rollers rather than accumulating on one. This prevents swelling of any single roller and maintains smooth rotation capability.
Solution Approach 2:
The two rollers work continuously together in a coordinated manner, with the first roller receiving material and the second roller continuously applying it to the skin. This continuous interaction prevents material buildup on any single roller surface.
3Device complexity
If liquid material is discharged directly without control mechanism, then the structure is simple, but the discharge direction and amount cannot be easily controlled
Solution Approach 1:
The discharge control mechanism is integrated with the rotation of the first roller. As the first roller rotates, it controls the discharge timing and direction of liquid material. This dynamic control allows easy manipulation of discharge direction and amount through simple rotational movement.
Solution Approach 2:
The system uses the rotation of the first roller as feedback to control the discharge process. The rotational position and speed of the first roller determine when and how much material is discharged, creating a self-regulating system that is easy to control.
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 dual roller structure enables even liquid material distribution, prevents contamination, and allows for easy control of discharge direction, enhancing application precision and efficiency.
Implementation Method 1
a first roller unit rotatably placed above the lower surface of the roller support and making contact with the contents which are discharged from the second discharge port, and a second roller unit placed on a side of the first roller unit in such a way as to be put in contact with the first roller unit
Implementation Method 2
A check valve may be provided in the through hole of the body
Data Source
AI summary
An apparatus for liquid material application with a dual roller structure includes a body having a space for holding contents therein, with a first discharge port being formed on an upper portion of the body to discharge the contents; a roller support mounted on an upper portion of the body, and having, on a lower surface thereof, a second discharge port which communicates with the first discharge port; a first roller unit rotatably mounted on a lower portion of the roller support, and making contact with the contents which are discharged from the second discharge port; and a second roller unit rotatably mounted on an upper portion of the roller support in such a way as to be put in contact with the first roller unit to discharge the contents that are discharged from the first roller unit.