Air feeders, essential equipment in stamping automation, maintain their relevance in the industry due to their cost-effectiveness. Despite their utility, conventional air feeders often face structural limitations, compromising feeding accuracy. One prevalent issue involves the reliance on nylon stop rings for cushioning and positioning by the main central piston, leading to inaccuracies during high-speed movements. Moreover, inadequate exhaust port configuration in directional valves affects balance and step accuracy during operation. Over time, wear and tear on valve cores contribute to air leakage and diminished feeding precision.

As a leading feeder manufacturer in China, we address these shortcomings through structural enhancements, ensuring superior feeding accuracy.

Revamped Structure of Air Feeders

I. Three Integral Parts

The air feeder comprises three primary components:

  1. Guiding Part: This section encompasses guide wheels, fixed bodies, guide rods, central support rods, positioning sleeves, and fine adjustment bolts. Guide wheel sleeves mount on guide wheel shafts, while guide rods and central support rods, affixed to fixed bodies, facilitate adjustment via fine adjustment bolts and positioning sleeves, regulating feeding steps.

II. Structural Refinements

We’ve implemented several optimizations:

  1. Elastic Buffers: Elastic buffers, installed at the central support rod’s front and rear ends, mitigate impact during high-speed movements. The front buffer, comprising a buffer sleeve and spring, compresses upon contact with the positioning sleeve, providing cushioning. Similarly, the rear buffer, housing a buffer spring and retaining ring, cushions the central piston’s backward motion. Additionally, rear guide wheels ensure material straightness.
  2. Enhanced Feeding Part: The feeding segment, housing the main central piston and body, ensures smoother operation. Air delivery to the piston occurs via the central support rod, while sliding bearings with oil grooves minimize wear between the main body and guide rods, enhancing lubrication and reducing friction resistance.
  3. Optimized Valve Body: The valve body, containing the main central piston, directional valve body, and directional valve core, is crucial. We’ve installed a silencing throttle air valve at the directional valve body’s exhaust port, ensuring smoother feeding. Moreover, we’ve replaced nylon stop rings with brass counterparts and added O-ring seals to the directional valve core, enhancing wear resistance and sealing performance. Hard chrome plating on main wearing parts further boosts durability.

III. Installation Process

Upon installation, the improved air feeder’s valve body secures onto the lower die seat of the punch via mounting screw holes. Air enters through the air pipe, regulating feeding actions via the air passage and synchronizing with the punch through air pressure control valve coordination.

IV. Preventive Measures

To prevent material jamming, two protective switches above the valve body halt operations if blockages occur or if materials protrude or bend, triggering immediate machine stoppage, thus safeguarding the mold.

In conclusion, our redesigned air feeder exemplifies a leap forward in stamping automation, ensuring precise and efficient operations, thus revolutionizing industrial productivity.

Air Feeder
Air Feeder