Leather Hole Coloring Machine with Inverted Rotating Tools
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Solution Overview
Problem
Current methods for sizing and coloring holes in leather or leatherette products are inefficient, leading to aesthetic issues, increased costs, and inability to adapt to different shapes and patterns, with existing machines causing color stains and imperfections.
Innovation Solution
A machine with a movable base and rotatable heads that immerse in color, rotate, and translate to engage holes from the bottom, ensuring even coloring and sizing while avoiding stains, with elastic elements for flexibility and adjustable mechanisms for various hole configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a comb equipped with color-soaked tips is used to automatically color holes, then coloring efficiency is improved, but color dripping stains the leather product and ruins its appearance
Solution Approach 1:
The tool is inverted so that coloring occurs from the bottom of the hole rather than the top. The tool enters the hole from below, colors the inner surface by rotation, and exits upward, preventing color from dripping onto the leather surface and eliminating staining while maintaining efficient automated coloring
Solution Approach 2:
A containment volume is introduced as an intermediary mechanism between the color source and the leather product. The tool is dipped in color within this contained space, ensuring color is applied only to the hole interior through controlled rotation, preventing direct contact between excess color and the leather surface
2Stability of the object's composition
If rigid parts are used in the hole coloring machine, then structural stability is improved, but adaptability to different hole shapes and patterns is reduced
Solution Approach 1:
The machine employs movable bases and rotatable heads that can dynamically adjust their positions and orientations. The tools can rotate about their own axes and the heads can be repositioned, allowing the same stable structural framework to adapt to various hole shapes, sizes, and patterns on different leather products
3Manufacturing precision
If manual coloring with ink-soaked stems is used, then aesthetic quality is improved, but time consumption and costs increase significantly
Solution Approach 1:
The tool is designed to color itself by rotating within the hole after being dipped in color. The rotation mechanism allows the color-soaked tool to automatically apply color to the hole's inner surface without manual manipulation, achieving consistent aesthetic results while enabling automated high-speed processing that reduces time and labor costs
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
A machine (1) for the sizing and colouring of holes in leather or leatherette products comprises a structure (10) having a supporting surface (12) for a leather or leatherette product having a plurality of holes, a movable base (20) located below the supporting surface (12) and supporting a plurality of heads (22), each equipped with a respective tool (24) adapted to size and colour the holes, a movement unit (40) configured to move the movable base (20) between a colour dipping position, in which the heads (22) interact with a containment volume (V) containing the colour, and a hole sizing and colouring position, in which the tools (24) protrude from the supporting surface (12) for engaging, sizing and colouring the holes.