In new energy vehicle, electronic control PCBA, semiconductor, and 3C high-precision assembly lines, 100~200μm metal debris and dust particles—invisible to the naked eye—are easily overlooked "invisible killers." Contaminants adhering to screw surfaces can persist throughout the entire feeding and tightening process, causing multiple irreversible production and quality risks:

1. Product Quality Hazards: Impurities interfere with thread engagement, causing torque fluctuations and bolted connection loosening; particles falling onto electronic control circuit boards can easily cause short circuits.

2. Production Line Efficiency Bottlenecks: Dirty screws can cause feeding jams and tightening errors, leading to frequent equipment downtime for adjustments, directly reducing the entire line's production tact time and increasing rework costs.

3. Increased Equipment Wear: Dust and metal debris continuously wear down the feeding tracks, screwdriver bits, and tightening modules, increasing maintenance frequency and long-term operational costs for the factory.

Traditional vibratory bowl feeders rely on high-frequency vibration for separating parts. This causes screws to rub against each other intensely, continuously generating new debris, making them unsuitable for the screw cleanliness management needs of high-end precision assembly. Danikor has launched a solution combining a step-type screw feeder with a multi-stage vacuum suction screw cleaning and management system, ensuring layered dust removal from feeding to tightening, preventing particle contamination at the source.

I. Danikor's Multi-Stage Cleanliness Control: Layered Filtration of Impurities

The entire cleaning system leverages the vibration-free structure of the step-type screw feeder, paired with a multi-stage vacuum suction module, to achieve layered screw cleaning:

1. Hopper Source Cleaning, Reducing Debris Generation at the Root: Traditional vibratory bowls rely on vibration for separation, causing screws to collide and rub, generating significant dust. Danikor's step feeder hopper has no vibration source; screws are lifted smoothly with minimal friction, significantly reducing debris generation at the source. The hopper features a built-in independent dust collection box, working with a vacuum unit to absorb free-floating dust in real-time, preventing impurities from re-adhering to screw surfaces.

2. Track Simultaneous Cleaning, Detailed Dust Removal for Individual Screws: After screws enter the conveying track, a comprehensive cleaning process targets the threads and heads of individual screws, removing dust and metal debris that may have adhered during transport, ensuring each screw undergoes basic purification individually.

3. External Independent Cleaning Module, Deep Vacuum Dust Removal: During the screw blowing and transfer stage, simultaneous vacuum suction peels off stubborn impurities from thread gaps, progressively improving screw cleanliness.

4. End-of-Arm Cleaning at the Tightening Station, Final Protection Before Assembly: The tightening nozzle is equipped with a vacuum filtration module. Screws undergo deep filtration before entering the fastening station, preventing debris from falling into the workpiece during assembly, meeting the strict cleanliness standards of the automotive and electronics industries.

II. Three Graded Cleaning Solutions, Aligned with VDA19 and Multi-Industry Cleanliness Standards

Based on the German Association of the Automotive Industry (VDA) Volume 19 cleanliness management specifications and categorized by three levels of particle contamination (large, medium, small), Danikor offers three screw cleaning solutions: Standard, Professional, and Expert, tailored to different industry cleanliness thresholds:

1. Standard Edition: For general assembly scenarios, providing basic dust removal, suitable for ordinary home appliances and general hardware assembly.

2. Professional Edition: For new energy vehicle components and motor housing assembly, meeting the standard cleanliness spot-check requirements of regular OEMs.

3. Expert Edition: For high-cleanliness workstations such as electronic control PCBA, semiconductor, and precision electronics. In tests, it reduced particles ≤130μm from 26 to just 1—achieving near-zero impurities and fully meeting the IPC-A-610 circuit board cleanliness standards.

III. Three Core Values of the Multi-Stage Screw Cleaning Solution

1. High Quality: Source Cleanliness Control for Near-Zero Defect Precision Assembly. Multi-level dust removal throughout the entire process eliminates impurity interference, preventing circuit board short circuits, unstable thread torque, loosening, and other failures. It establishes a robust quality defense line from the screw feeding stage, significantly reducing product defect rates and after-sales recall risks.

2. High Efficiency: Reducing Downtime and Jams, Stabilizing Continuous Production Takt. Preventing jams and stoppages caused by screw impurities ensures a smooth and uninterrupted production rhythm, achieving efficient and stable continuous output.

3. High Reliability: Reducing Equipment Wear and Extending Service Life. Reducing dust wear on feeding tracks, tightening bits, and precision components within the modules lowers the frequency of equipment repairs and replacements. Long-term, this helps factories reduce equipment maintenance and operational costs, ensuring stable performance without degradation over time.

IV. Applicable Industries and Scenarios

Danikor's multi-stage screw cleaning and management solution is widely applicable to high-end manufacturing sectors with strict cleanliness requirements:

• New Energy Vehicles: Electronic control PCBA, battery packs, motor controllers, and complete vehicle chassis assembly.

• 3C Electronics & Semiconductors: Precision circuit boards and fastening of small components.

• High-Cleanliness Assembly Stations: Precision instruments, medical devices, servo motors, and more.

Danikor's standardized screw cleanliness management solution balances assembly quality, production efficiency, and equipment longevity, creating a closed-loop quality defense line for automotive and electronic precision assembly.