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Three common types of automatic screw feeders are widely used today: disc feeder, step feeder, and vibratory bowl feeders. Let’s briefly review how each works and how they are assembled.

1. Rotary (Disc) Automatic Screw Feeder Working Principle

• Uses vacuum suction to capture screws and place them in precise holes.

• Features a metal locating structure for high repeatability.

• Split-type design: vacuum and control modules are independent, keeping the feeder compact and easy to mount.

• “Water-wheel” indexing ensures high pick-up probability and zero jamming, reducing maintenance downtime.

  
  

2. Step Feeder Working Principle

• Danikor’s upgraded ladder feeder pushes screws upward with a plate and uses linear vibration to align them at the separation point for blow-off.

• Fresh industrial design and integrated control system save PLC programming effort.

• Continuous, stable, and accurate feeding boosts productivity and eliminates manual handling.
  

  
  

  3. Vibratory-Bowl Automatic Screw Feeder Working Principle

• Uses a spiral vibrating bowl to orient screws and delivers them in the required attitude.

• A pneumatic cylinder separates screws once they reach the discharge position.

• Ideal for screws with heads (e.g., pan, round, or hex heads).

• Auto standby after a set idle time saves energy.

  
  

These are the working principles and assembly diagrams of three mainstream automatic screw feeders. To learn more about their features and advantages, call our toll-free hotline. Danikor is a leading manufacturer dedicated to screw-feeding solutions, holding over 20 patents.