Engineered Stone Apron Sink Assembly Without Visible Draft Angles
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Solution Overview
Problem
The draft angles in typical sink molds affect the aesthetics of engineered stone sinks by altering their shape, particularly in the apron area, which is undesirable in certain applications.
Innovation Solution
A two-piece construction for engineered stone sinks, where the basin body and apron are molded with draft angles configured for vertical and horizontal mold separation directions respectively, allowing for separate molding and assembly without requiring draft angles on the apron, and secured using an adhesive between the apron and the basin body's top flange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If draft angles are designed in sink molds for vertical mold separation, then the sink can be easily extracted from the mold, but the apron shape is distorted and aesthetics are compromised
Solution Approach 1:
The sink is divided into two separate molded pieces: the basin body and the apron. The basin body is molded with vertical draft angles for easy extraction, while the apron is molded separately with horizontal draft angles. This segmentation allows each component to have optimized draft angles for its specific molding direction, eliminating shape distortion on the apron's visible surfaces.
Solution Approach 2:
The draft angle direction is changed from vertical to horizontal for the apron component. By molding the apron with horizontal draft angles perpendicular to the basin body's vertical draft angles, the apron can be extracted from its mold without distorting its front and side surfaces, which are critical for aesthetics.
2Ease of manufacture
If the sink is molded as a single piece with vertical draft angles, then manufacturing is simplified, but the apron requires unwanted draft angles that affect its shape
Solution Approach 1:
The sink is segmented into two independently molded components: the basin body and the apron. This allows each component to be molded with draft angles optimized for its specific geometry and extraction requirements, rather than forcing a single vertical draft angle design on the entire sink.
Solution Approach 2:
Different draft angle configurations are applied to different parts of the sink. The basin body uses vertical draft angles for its molding and extraction, while the apron uses horizontal draft angles. This local optimization ensures that each component's critical surfaces maintain their desired shape while still allowing easy mold extraction.
3Shape
If the apron is molded separately with horizontal draft angles, then the apron shape is preserved, but the assembly process becomes more complex
Solution Approach 1:
An adhesive is introduced as an intermediary to join the basin body and apron. The adhesive compensates for the complexity of assembling two separately molded pieces with different draft angle orientations, providing a simple and effective bonding mechanism that does not require complex mechanical fasteners or additional structural features.
4Ease of manufacture
If draft angles are applied to the apron for horizontal mold separation, then extraction is easier, but the aesthetic appearance is compromised
Solution Approach 1:
Instead of applying vertical draft angles to the apron (which would distort its shape), the draft angles are applied in the opposite orientation - horizontally - to the apron component. This inversion of the draft angle direction allows the apron to be extracted from its mold without distorting its front and side surfaces, which are the aesthetically critical surfaces.
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 approach eliminates the need for draft angles on the apron, enhancing the aesthetic appeal of the sink by maintaining a smoother, more desired shape while ensuring easy manufacturing and assembly.
Implementation Method 1
an adhesive disposed between the apron and the underside of the top flange to secure the apron to the basin body
Data Source
AI summary
A sink includes a basin body having a generally concave shape that forms at least one sink basin, a top flange integrally formed with the basin body, the top flange extending around a rim of the at least one sink basin, the top flange having an underside that is generally flat, an apron connected onto a front portion of the underside of the top flange, and an adhesive disposed between the apron and the underside of the top flange to secure the apron to the basin body.