Preform Coating Device Multi-Head Nozzle Segmentation
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Solution Overview
Problem
Current preform coating devices are inefficient in coating a large number of preforms in a short time without increasing installation area or production costs.
Innovation Solution
A preform coating device with multiple rotary retention parts and nozzles arranged at predetermined intervals, allowing simultaneous coating on multiple preforms using a single dispenser head with adjustable nozzles for uniform coating, and optional dual dispensers for upward and downward coating to prevent interference and bubble issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple heads are used to coat multiple preforms simultaneously, then productivity is improved, but device complexity and production costs increase
Solution Approach 1:
The single head is segmented into multiple nozzles (first nozzle, second nozzle, third nozzle, fourth nozzle) arranged at predetermined intervals. Each nozzle independently coats one preform, achieving multi-preform coating capability while maintaining a single head structure, thus improving productivity without increasing device complexity or production costs.
Solution Approach 2:
A single head performs the function of multiple heads by incorporating multiple nozzles that can simultaneously coat multiple preforms. The head structure is designed to accommodate multiple nozzles with different discharge directions (upward, downward, lateral), making it a universal coating unit that can handle various coating requirements.
2Productivity
If multiple heads are used to coat multiple preforms simultaneously, then productivity is improved, but installation area increases
Solution Approach 1:
The nozzles are arranged not only in the lateral direction but also in the vertical direction (upward and downward discharge directions). This three-dimensional arrangement allows multiple nozzles to be compactly positioned within a small installation area while still simultaneously coating multiple preforms, thus improving productivity without expanding the footprint.
3Manufacturing precision
If nozzles are arranged at predetermined intervals to match rotary retention parts, then coating uniformity is improved, but device complexity increases
Solution Approach 1:
The nozzle structure includes adjustable parameters such as the distance from the head to the slot (adjustable from 5mm to 50mm) and the discharge direction (upward, downward, lateral). These adjustable parameters allow the nozzles to be adapted to different preform positions and sizes, achieving uniform coating without requiring extremely precise fixed arrangements, thus reducing device complexity while maintaining coating uniformity.
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 coating of a larger number of preforms in a short time without expanding the installation area or increasing production costs, ensuring uniformity and quality of the coating.
Implementation Method 1
a plurality of nozzles in fluid communication with the head, each of the plurality of nozzles having a slot for discharging the coating solution
Data Source
AI summary
A preform coating device is provided with: a plurality of rotational holding parts that horizontally hold a preform; a conveyance part that conveys the preform by moving the plurality of rotational holding parts, the plurality of rotational holding parts being disposed at a predetermined interval along the conveyance route of the conveyance part; and a dispenser that discharges a coating liquid toward the preform. The dispenser has: a head including a mechanism for feeding the coating liquid; and a plurality of nozzles that are in fluid communication with the head and that each include a slot for discharging the coating liquid. The plurality of nozzles are disposed at a predetermined interval along the conveyance route. The interval between the plurality of nozzles is equal to the interval between the plurality of rotational holding parts.