High Speed Roll Feeder

The SUNRUI High Speed Roll Feeder is a mechanical, non-powered roller feeder designed for reliable, high-speed feeding in metal stamping operations. It operates using a simple, robust mechanism driven by the press itself—eliminating the need for an external power source, complex electronics, or a servo motor.

This makes it an exceptionally cost-effective and low-maintenance solution for high-volume production lines. It is widely used for feeding a variety of materials (steel, stainless steel, aluminum, copper) in applications such as saw blade stamping, terminal and connector stamping, eyelet and metal button production, and other high-speed blanking operations where precision and uptime are critical.

How the Mechanical Roll Feeder Works?

The high speed roll feeder is mechanically linked to the press, drawing its power directly from the press motion without requiring an external power source. The up-and-down movement of the press slide drives a rocker arm and one-way clutch mechanism, which converts the press's reciprocating motion into intermittent rotary motion of the feed rollers. This synchronized movement pulls the material strip forward for a predetermined length each cycle .

Detailed Operating Sequence:

• Power Transmission from the Press: The feeder is connected to the press crankshaft through a series of mechanical linkages. An eccentric disc or cam mounted on the press crankshaft drives a connecting rod (rocker arm), which converts the continuous rotation of the press into a reciprocating motion .

  
  

• One-Way Clutch Engagement: The rocker arm is connected to a one-way clutch (also called a unilateral bearing) mounted on the feed roller shaft. As the press slide descends, the rocker arm rotates the clutch in the feeding direction, engaging the feed rollers and pulling the material forward. The one-way clutch ensures that the feed rollers only rotate in the forward direction .

  
  

• Feed Length Control: The feed length is determined by the stroke of the rocker arm, which is mechanically adjustable by changing the eccentricity of the connecting rod connection point. This allows the operator to preset the exact material advancement needed for each stamping cycle .

  
  

• Roller Synchronization: The upper and lower feed rollers are synchronized through gears. The lower roller is the driven roller connected to the one-way clutch, while the upper roller (idle roller) is spring-loaded to maintain firm clamping pressure on the material, preventing slippage during feeding .

  
  

• Material Release: At the bottom of the press stroke, a release mechanism temporarily separates the upper roller from the lower roller, freeing the material. This allows the press's pilot pins to accurately position the material before stamping, preventing die damage and ensuring precision .

  
  

• Return Stroke: As the press slide rises, the rocker arm returns to its original position, but the one-way clutch disengages and rotates freely, allowing the feed rollers to remain stationary. The material is held in place by the anti-reverse device, which prevents any backward movement of the rollers during the return strok

Key Components and Their Functions:

• No External Power Needed: Operates directly from the press motion, saving energy and simplifying installation.

• High-Speed Capability: Capable of feeding at speeds up to 600 strokes per minute (SPM), ideal for high-speed stamping applications.

• Precision & Consistency: Delivers a reliable feeding accuracy of ±0.1mm for consistent part quality.

• Robust & Low Maintenance: Simple mechanical construction with fewer wear parts ensures long-term reliability, durability, and minimal maintenance.

• Easy Operation: Simple mechanical adjustment for feed length, no complex programming required.

• Versatile Material Handling: Handles material thicknesses from 0.1mm to 3.5mm and widths from 20mm to 400mm, covering a wide range of stamping applications.

The High-Speed Roll Feeder is the ideal choice for dedicated, high-volume production lines, including:

• Saw Blade Stamping Lines: High-speed, continuous production of saw blades.

• Terminal & Connector Stamping: Precision feeding of thin-gauge materials for electronic components.

• Eyelet & Metal Button Stamping: High-speed feeding for small, high-volume hardware parts.

• Electronic Component Stamping: Feeding lead frames, connectors, and other components.

• General High-Speed Blanking: Any operation requiring reliable, high-speed feeding of metal coils.