Magnetic Frameless Separating Strip for Selective Wave Soldering
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Solution Overview
Problem
Existing soldering nozzles for selective wave soldering require multiple strip packages with frames for different geometries, leading to complexity and high costs, and existing solutions do not ensure reliable and flexible removal of excess solder to prevent undesirable solder bridges.
Innovation Solution
A frameless separating strip held by magnetically acting means within the nozzle's base body, allowing for individual manufacturing and easy replacement, with height-adjustable insert parts and secure grooves for precise guidance of solder flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple strip packages with frames are used for different nozzle geometries, then the separating function is achieved, but the device complexity and manufacturing costs increase
Solution Approach 1:
The patent extracts the separating strip from the frame structure, eliminating the need for a frame entirely. The frameless separating strip is held directly in the wave section by magnetic forces, removing unnecessary structural elements while maintaining the separating function across different nozzle geometries.
Solution Approach 2:
The frameless separating strip design creates a universal solution that can be used with multiple nozzle geometries. By removing the frame and using magnetic retention, a single strip design can adapt to different wave section configurations without requiring custom-framed packages for each geometry.
2Reliability
If separating strips are enclosed in frames, then the strips are retained in position, but the ease of manufacture and replacement decreases
Solution Approach 1:
The frame is completely removed from the design. The separating strip is retained in position through magnetic forces alone, eliminating the need for mechanical framing structures and simplifying both manufacturing and replacement processes.
Solution Approach 2:
The patent replaces the mechanical frame structure with a magnetic field-based retention system. Magnets embedded in the wave section hold the frameless separating strip in position through magnetic attraction, eliminating complex mechanical assembly and disassembly requirements.
3Reliability
If magnets are placed in the wave section to hold the separating strip, then the strip is retained securely, but the magnets are exposed to solder contamination and wear
Solution Approach 1:
The patent introduces a magnetic strip or magnetic layer as an intermediary between the magnets and the separating strip. This intermediary layer allows magnetic retention while protecting the magnets from direct exposure to solder contamination and mechanical wear.
Solution Approach 2:
The separating strip is designed as a disposable component that can be easily replaced, while the magnets remain protected and reusable. This approach accepts that the strip will wear or become contaminated, but protects the expensive magnets from the same fate.
4Manufacturing precision
If custom-framed strip packages are used for each nozzle geometry, then the separating function is optimized for each geometry, but the productivity and cost-effectiveness decrease
Solution Approach 1:
The frameless separating strip creates a universal component that works across multiple nozzle geometries. This eliminates the need to manufacture and inventory custom-framed packages for each nozzle type, significantly improving productivity and reducing costs while maintaining adequate separating performance.
Solution Approach 2:
By removing the frame and its geometry-specific adaptations, the patent creates a standardized separating strip that can be used across different nozzle designs, streamlining manufacturing and maintenance 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
The solution provides a flexible, cost-effective, and reliable means to prevent solder bridges by ensuring precise control of solder flow and easy adaptation to different nozzle geometries, enhancing the reproducibility of high-quality solder joints.
Implementation Method 1
The retaining means are designed as magnetically acting means. The separating strip is made of ferromagnetic material, at least in sections, and the retaining means are designed as retaining magnets provided on the base body.
Implementation Method 2
at least one separating strip that can be inserted into the wave section and is wettable with solder
Data Source
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AI summary
The invention relates to a soldering nozzle for the simultaneous selective wave soldering of at least two spaced-apart rows of solder joints in a soldering installation, with a base portion which can be arranged on a nozzle plate, and with a wave portion which forms the solder wave during operation and which has a peripheral wall having a free upper side, and with at least one separating strip which can be inserted into the wave portion and which can be wetted with solder, wherein the at least one separating strip is formed as a frameless separating strip. The invention also relates to a soldering installation having a nozzle plate and having at least one soldering nozzle.