Laminated Core Adhesive Application Stability
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Solution Overview
Problem
Existing methods for manufacturing laminated iron cores, such as the lamination bonding method, face challenges in applying adhesive agents stably and efficiently, especially when dealing with varying shapes and sizes of iron core laminates, leading to potential impairment of magnetic properties and tool smearing.
Innovation Solution
An apparatus with a modular adhesive agent application unit featuring adjustable ejection orifices and storage chambers, allowing for precise control of adhesive agent flow and pressure, enabling stable application regardless of the arrangement and number of application spots on each iron core laminate, and interrupting adhesive application where necessary to prevent smearing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If adhesive agent is applied to larger area or more application spots on iron core laminate, then bonding coverage is improved, but adhesive ejection stability deteriorates
Solution Approach 1:
The adhesive agent storage chamber is divided into multiple segmented storage spaces, each capable of independently storing and ejecting adhesive agent. This segmentation allows the system to maintain stable ejection pressure in each segment while collectively covering a larger application area, thus resolving the contradiction between expanded coverage and ejection stability.
Solution Approach 2:
The piston is configured to move dynamically within the storage chamber to push adhesive agent from multiple segmented spaces through respective ejection orifices. This dynamic mechanism ensures that adhesive agent is continuously supplied to multiple application spots with stable pressure, enabling both large-area coverage and reliable ejection.
2Manufacturing precision
If adhesive agent is applied to complex pattern arrangement on iron core laminate, then bonding precision is improved, but ejection stability deteriorates
Solution Approach 1:
Each segmented storage space is associated with specific ejection orifices positioned at predetermined locations corresponding to complex pattern requirements. This segmentation enables precise control of adhesive application patterns while maintaining stable ejection pressure in each segment, resolving the contradiction between pattern precision and ejection stability.
Solution Approach 2:
Different segmented storage spaces can be configured with different ejection characteristics suitable for local pattern requirements. Each segment provides locally optimized adhesive ejection for its specific pattern section, allowing complex overall patterns to be achieved while maintaining local ejection stability.
3Area of stationary object
If adhesive agent is applied to all areas of iron core laminate, then bonding coverage is improved, but tool smearing increases
Solution Approach 1:
The system extracts or interrupts adhesive agent supply to specific segmented storage spaces when certain areas require no adhesive application. This selective extraction prevents adhesive application in areas that would cause tool smearing, while maintaining coverage in areas that require bonding, thus resolving the contradiction between coverage and smearing prevention.
Solution Approach 2:
The adhesive ejection is controlled to occur periodically or intermittently in different segmented spaces based on processing requirements. This periodic action allows adhesive to be applied only when and where needed, preventing continuous application that would cause tool smearing while maintaining necessary coverage.
Data Source
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AI summary
In manufacturing a laminated iron core by laminating and bonding iron core laminates blanked from a sheet steel strip into a prescribed profile, the adhesive agent can be applied to the iron core laminates in a stable manner without regard to the arrangement and the number of the application spots on each iron core laminate. The metallic die machine (1) is provided with an adhesive agent application unit (12) configured to apply an adhesive agent to a prescribed area of the sheet steel strip (W) corresponding to the iron core laminates (2), and the adhesive agent application unit is provided with a casing (44) defining a plurality of adhesive agent storage chambers (55-57) for storing the adhesive agent before the adhesive agent is applied to the prescribed area. The casing is provided with a plurality of ejection orifices (H1 to H3) each communicating with a corresponding one of the adhesive agent storage chambers and configured to eject the adhesive agent.