Adhesive Nozzle Positioning for Uniform Thin Steel Strip Coating
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Solution Overview
Problem
Conventional adhesive application systems for laminated steel core production face issues with inconsistent adhesive application due to wear and tear of components, leading to variations in adhesive amount and uneven distribution, which affects the magnetic properties of the steel core.
Innovation Solution
An adhesive application system with independently elevatable and lowerable nozzles, maintaining a predetermined distance from the steel strip, and featuring a mechanism to synchronize adhesive application with the punching process, ensuring a consistent adhesive amount and uniform distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the adhesive dispense unit is moved up and down to apply adhesive, then adhesive application is achieved, but the cam surfaces wear out and adhesive amount varies
Solution Approach 1:
The adhesive application system is divided into independent modules: the adhesive supply unit with pressurizing device, the adhesive pool, and the dispense nozzles. This segmentation allows the adhesive to be supplied under controlled pressure independently of the positioning mechanism, reducing the impact of mechanical wear on application consistency.
Solution Approach 2:
The adhesive is pre-loaded into the adhesive pool and pressurized in advance before the actual application process. This preliminary preparation ensures that adhesive flow is controlled by pressure rather than by the precision of the dispense unit's positioning, mitigating the effects of cam surface wear.
2Area of stationary object
If multiple dispense nozzles are provided, then adhesive application coverage is improved, but variations in distance to steel strip surface occur due to inclination
Solution Approach 1:
A pressurizing device is used to supply adhesive to the adhesive pool under controlled pressure. This pneumatic/hydraulic approach ensures uniform adhesive flow to multiple nozzles, compensating for slight variations in nozzle-to-surface distance caused by inclination, and maintaining consistent adhesive distribution across the coverage area.
3Ease of operation
If cam surfaces are used for positioning, then mechanical positioning is achieved, but gradual wear leads to position variation
Solution Approach 1:
The patent replaces the mechanical cam-based positioning system with a pressurized adhesive supply system. Instead of relying on precise mechanical positioning of the dispense unit, the invention uses pressure-controlled adhesive delivery to ensure consistent application, substituting mechanical precision requirements with fluid pressure control.
Data Source
AI summary
Provided is an adhesive application system configured to apply a necessary and sufficient amount of an adhesive to a thin steel strip without causing an increase in the equipment cost. The adhesive application system comprises an adhesive application device having adhesive dispensing nozzles (26, 27) for dispensing an adhesive to an adhesive application surface of a thin steel strip; a mechanism configured to elevate and lower the adhesive application device; and adhesive supply ports (17, 18) for supplying the adhesive at a predetermined pressure to the adhesive application device, wherein the adhesive application device has an end face that is to be brought into abutment against the thin steel strip, and wherein outlets of the adhesive dispensing nozzles (26, 27) are spaced inwardly away from the end face of the adhesive application device so that the outlets of the adhesive dispensing nozzles (26, 27) are maintained at a predetermined distance from a lower surface of the thin steel strip.