Coating Nozzle with Equal-Length Communication Paths
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Solution Overview
Problem
Conventional coating devices experience variations in the discharge of coating materials from discharge nozzles, leading to inconsistent coating on targets.
Innovation Solution
A coating nozzle design featuring a plurality of discharge holes aligned on a straight line, supply holes arranged concentrically around a central position, and communication hole paths with equal lengths, ensuring uniform pressure and synchronized discharge timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a plurality of discharge holes are arranged linearly to coat a target uniformly, then the coating coverage is improved, but variations in discharge timing and pressure occur leading to inconsistent coating quality
Solution Approach 1:
The patent applies equipotentiality by designing all communication hole paths to have substantially equal lengths, ensuring that the coating material reaches all discharge holes under equal pressure conditions. This eliminates pressure variations and timing differences in discharge, achieving uniform coating quality across the entire coating area while maintaining linear arrangement of multiple discharge holes
2Device complexity
If the communication hole paths have different lengths to reach discharge holes, then the nozzle structure is simplified, but variations in discharge pressure and timing occur
Solution Approach 1:
The patent applies parameter changes by carefully controlling and equalizing the lengths of all communication hole paths. This parameter control ensures that despite the complex routing needed to reach multiple discharge holes, all paths maintain substantially equal lengths, thereby ensuring consistent discharge pressure and timing across all holes while achieving reliable uniform coating
3Area of stationary object
If the coating nozzle discharges material to a long coating region, then the coating area is increased, but the nozzle size must be larger
Solution Approach 1:
The patent applies dimensionality change by arranging supply holes and discharge holes in different spatial dimensions and orientations. The supply holes are arranged in a pattern (e.g., triangular lattice) and connected via communication hole paths that route through the nozzle body to reach discharge holes positioned to cover a long coating region. This multi-dimensional arrangement allows extended coating coverage without proportionally increasing nozzle volume
Data Source
AI summary
An object of the present invention is to provide a coating nozzle which has a plurality of discharge holes and which can reduce variations in the discharge of a coating material from the discharge holes. A coating nozzle (10) includes: a plurality of supply holes (40a to 40t) which are formed in a supply surface (35) so as to be aligned on a circle (D) with a first position (45) in the center; a plurality of discharge holes (50a to 50t) which are formed in a discharge surface (20) so as to be aligned on a straight line (L); and a plurality of communication hole paths (60a to 60t) which make the supply holes (40a to 40t) linearly communicate with the discharge holes (50a to 50t), respectively and in which the communication distances thereof are substantially equal to each other.