When investing in a new extrusion blow molding machine, a thorough inspection is critical to ensure proper assembly and optimal performance. Even with skilled technicians on hand, it's important to understand key aspects of your machine. Follow these steps for a comprehensive status check:
Installation and Calibration: Follow the manufacturer’s manual closely for proper installation. Calibrate the machine’s head and clamping device for precise operation. Accurate calibration is essential for consistent product quality.
Connect Water Cooling System: Ensure the mold water cooling tube is properly installed. Efficient cooling stabilizes mold temperatures, improving product solidification.
Check Electrical Components: Inspect the electrical control panel, programmable controllers, and operating keyboards for any malfunctions.
Process Flow Inspection: Verify the efficiency of the feeding, product placement, and waste recycling systems. Any inefficiencies here can lead to production delays or product defects.
Auxiliary Equipment Positioning: Confirm that all auxiliary equipment—such as the material feeding system and conveyors—are correctly positioned to maintain seamless operation.
Hydraulic and Lubrication System: Inspect the hydraulic oil level and the lubrication system to ensure they meet recommended levels, which is critical for smooth and long-lasting machine operation.
Regular inspections should be performed to maintain safety and high production performance.
Pre-Operation Checklist for an Extrusion Blow Molding Machine:
Before starting the machine, follow these steps to ensure smooth operation:
Material Preparation: Ensure materials meet the required drying specifications to prevent product defects.
Head Installation: Install the appropriate machine head for the product size. Proper assembly, including the head flange and die core, ensures consistent flow during molding.
Connection and Heating Setup: Attach compressed air tubes and heating components. Adjust the die gap for precise product dimensions and verify alignment with auxiliary systems.
No-Load Operation: Run the machine without a load to check safety devices and identify any issues.
Temperature Settings: Gradually heat the machine to the specified temperatures, testing each section with waste material to ensure uniformity.
Parison Adjustment: Adjust the wall thickness of the parison using the programmable controller to achieve even product quality.
Material Flow Increase: Start with a low material flow and gradually increase to prevent pressure buildup and ensure smooth production.
Optimal Production Conditions:
Maintain these conditions during production for high-quality results:
Process Temperature: Control the temperature between 170°C and 230°C, depending on the material.
Blown Expansion Ratio: Keep the ratio between 1.5 and 3 for proper product dimensions.
Compressed Air Pressure: Maintain air pressure between 0.6 MPa and 0.8 MPa for uniform bottle expansion.
Mold Temperature and Cooling Time: Set mold temperatures between 20°C and 50°C, with cooling accounting for 50%-60% of the production cycle.
By adhering to these guidelines, your extrusion blow molding machine will operate efficiently, producing high-quality products consistently. At EVERWIN, we provide not only machines but also comprehensive turnkey solutions to support your production. For inquiries, feel free to contact us anytime.
