Lamination Stack Gluing Station for Contamination-Free Production
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Solution Overview
Problem
Existing methods for producing lamination stacks, particularly those using glue, often result in contamination of the press and stacks, leading to machine interruptions and reduced production efficiency due to soiling and corrosion issues.
Innovation Solution
A method where glue is applied externally to the laminations after blanking, using dedicated stations with dispensers that can spray, roll, or brush apply adhesive, preventing contamination within the die and enhancing corrosion resistance and insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glue is applied inside the blanking station to produce lamination stacks, then the lamination stacks can be formed with adhesive bonding, but the press and die become contaminated with glue and metal swarf, causing machine interruptions and reduced productivity
Solution Approach 1:
The patent divides the production process into separate functional stations: a blanking station for cutting laminations and a dedicated gluing station for applying adhesive. This segmentation allows each station to perform its specific function without contamination from the other, maintaining die cleanliness while enabling continuous production through sequential operations.
Solution Approach 2:
The gluing operation is extracted from the blanking station and relocated to a separate dedicated station. By taking out the adhesive application process from the blanking environment, the die is protected from glue contamination while the lamination stacks receive proper adhesive bonding in a clean, dedicated area.
2Reliability
If glue is applied to lamination stacks, then adhesive bonding is achieved, but the glue mixes with metal swarf in the die causing contamination and corrosion
Solution Approach 1:
The adhesive application process is extracted from the blanking station environment where metal swarf is present. By relocating glue application to a dedicated station, the harmful mixture of glue and metal swarf is prevented, thereby eliminating corrosion risks and maintaining material purity.
Solution Approach 2:
A dedicated gluing station acts as an intermediary environment between the blanking process and the stacking process. This intermediate station provides a clean space for adhesive application without direct contact with metal swarf, preventing contamination while enabling effective bonding.
3Reliability
If a dedicated gluing station is added to separate blanking and gluing operations, then contamination is prevented, but device complexity increases
Solution Approach 1:
The patent combines multiple functions within the press structure: the blanking station, the dedicated gluing station, and the stacking area are integrated into a single press unit. This merging allows separate functional stations to operate in sequence without requiring additional standalone equipment, thereby reducing overall system complexity while maintaining the benefits of separated operations.
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
This approach increases production rate and efficiency by maintaining a clean die and stack, improving insulation and sealing, while preventing contamination and corrosion, and allowing for high protection against dust and magnetic insulation.
Implementation Method 1
The adhesive application step is carried out in a dedicated station of the die, in a position alongside the blanking station. The glue can be deposited by contact or can be sprayed via a specific nozzle, or may also be applied via a roller, paintbrush, or some other means that is brought into contact with the stack itself.
Data Source
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AI summary
Device for producing lamination stacks comprising: means for supplying a metal strip (12) to a blanking station (19); a press (11) comprising at the centre a punch (20) and alongside the latter at least one glue dispenser (21, 22); at least one template (17, 18) to enable blanking of said metal strip (12) in the desired shape; means (13) for displacing said at least one template (17, 18) in a direction transverse to the feed direction of said metal strip (12) from said blanking station (19) to a gluing station (25, 26); wherein present in a position corresponding to said at least one glue dispenser (21, 22) is a slot (25, 26) for collection of the laminations and formation of the lamination stack (27); a conveyor belt (28), set underneath said collection slot (25, 26), collects the lamination stacks (27) and sends them on for storage. (Figure 2)