The pneumatic system in an Industrial Footwear Upper Stretching Machine is responsible for providing controlled air pressure to actuate stretching mechanisms, precisely manipulate the shoe upper material during the stretching process, and ensure consistent tension application for uniform shaping of footwear components. This system comprises components such as a compressor, filters, regulators, valves, tubing, and pneumatic cylinders or actuators. The compressor generates compressed air, which is then filtered and regulated to precise pressure levels. The air is directed through valves and tubing to actuators that convert the air pressure into linear or rotational motion, operating the stretching mechanisms that shape the shoe upper material. The system's performance is characterized by several parameters: operating pressure ranges from 1.0 to 1.6 MPa, air consumption from 0.5 to 2.5 m³/min, port sizes from G1/8 to G1 (ISO 228-1), operating temperature from -10 to 60 °C, filtration grade from 5 to 40 μm (ISO 8573-1), lubrication oil content from 0 to 30 mg/m³ (ISO 8573-1), max flow rate from 500 to 5000 L/min (ISO 6358), response time from 10 to 100 ms, repeatability from ±0.1 to ±0.5 mm, power consumption from 0.5 to 5 W, voltage of 24 V DC ±10% (IEC 61131-2), IP rating from IP54 to IP65 (IEC 60529), and weight from 0.5 to 20 kg. Materials used include aluminum alloy, stainless steel, synthetic rubber, and polyurethane. These values are reference ranges and must be verified for the specific model and application with the legal manufacturer or supplier. The system is designed for industrial use, and proper selection of components, air preparation, and maintenance are essential for reliable operation.
Compressed air is generated by a compressor, filtered and regulated to precise pressure levels, then directed through valves and tubing to pneumatic cylinders or actuators. These actuators convert the air pressure into linear or rotational motion to operate the stretching mechanisms that shape the shoe upper material.
