Coating Device Supply Switching for Viscous Material Discharge
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Solution Overview
Problem
Conventional coating devices applying viscous materials for vibration damping in automobiles face instability in discharge rates, leading to variations in coating thickness when the coated region shape changes, requiring multiple nozzle reciprocations and increasing application time.
Innovation Solution
A coating device with a discharge nozzle group, supply units, and a control system that adjusts flow rates by switching between supply units to maintain consistent discharge rates, allowing for aligned nozzle arrangement and reduced variation in coating thickness without repeated nozzle movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single supply unit supplies viscous material at constant pressure, then the supply system is simple, but the discharge amount varies when coated region shape changes
Solution Approach 1:
The supply unit is divided into a first supply unit and a second supply unit, each capable of independently supplying viscous material at different flow rates. This segmentation allows the system to maintain stable discharge amounts by switching between supply units based on the required coating width, thereby resolving the contradiction between system simplicity and coating precision.
Solution Approach 2:
The supply system is made dynamic by enabling switching between first and second supply units with different flow rates. The control unit dynamically selects which supply unit to activate based on the current coating requirements, allowing the system to adapt to varying coated region shapes while maintaining consistent discharge amounts and coating thickness.
2Productivity
If multiple nozzles are arranged and aligned to coat different regions, then coating efficiency improves, but discharge amount stability deteriorates
Solution Approach 1:
The nozzle group is segmented into multiple nozzles (first nozzle, second nozzle, etc.), each associated with specific coated region shapes. The supply units are similarly segmented, with the first supply unit corresponding to the first nozzle and the second supply unit to the second nozzle. This segmentation enables each nozzle-supply unit pair to maintain stable discharge characteristics for their respective coating tasks.
Solution Approach 2:
Different supply units provide different flow rates tailored to specific nozzles and coated regions. The first supply unit provides a first flow rate optimized for the first nozzle and its associated coated region, while the second supply unit provides a second flow rate for the second nozzle. This local optimization maintains discharge stability while enabling efficient coating of various region shapes.
3Adaptability or versatility
If nozzle reciprocation is used to adapt to complicated coated region shapes, then coating flexibility improves, but application time increases
Solution Approach 1:
The system uses dynamic switching between multiple supply units and nozzles controlled by a control unit, eliminating the need for physical nozzle reciprocation. The control unit dynamically selects the appropriate supply unit and nozzle combination based on the coated region shape, maintaining coating flexibility while significantly reducing application time by avoiding reciprocating movements.
Solution Approach 2:
The mechanical reciprocation system is replaced with a control-based switching system. Instead of physically moving nozzles back and forth, the control unit switches between stationary nozzles and their corresponding supply units, substituting mechanical motion with electronic control and fluid flow management, thereby reducing application time while maintaining adaptability.
Data Source
AI summary
The present invention has an object to provide a coating vice which can reduce variation in the amount of discharge in the discharge nozzle group. A coating device 1 includes: a first supply unit 40 and a second supply unit 50 which can supply a viscous material N to the discharge nozzle group 10; and a control portion 100 which stops, at the timing at which a first time zone is switched to a second time zone, the supply in the first supply unit 40, which makes the second supply unit 50 start the supply of the viscous material N to the discharge nozzle group 10 at a second flow rate and which makes, in a second time zone, the first supply unit 40 start the preparation of the viscous material necessary in any one of a third time zone and the subsequent time zones.