Yizumi Electric Injection Molding Machine Operating Instructions

### **1. Safety Protocols**  

1. **Personal Protective Equipment (PPE)**  

   - Wear safety helmets, protective goggles, anti-slip shoes, and gloves.  

   - Avoid loose clothing or accessories.  

2. **Pre-Operation Checks**  

   - Ensure emergency stop buttons are disengaged and the power supply is properly grounded.  

   - Verify hydraulic oil and lubricant levels, and check for leaks in pipelines.  

3. **Hazard Zones**  

   - Never place hands near the mold clamping area or moving injection unit during operation.  

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### **2. Startup & Initialization**  

1. **Power-Up Sequence**  

   - Turn on the main power supply and activate the Human-Machine Interface (HMI).  

   - Perform a **'Homing'** operation to reset all axes (injection unit, ejector pins, mold).  

2. **Parameter Setup**  

   - Input or load preset parameters (injection pressure, speed, holding time, cooling time, etc.).  

   - Adjust melt temperature based on material type (e.g., ABS: 200–260°C, PC: 280–320°C).  

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### **3. Mold Installation & Debugging**  

1. **Mold Mounting**  

   - Secure the mold using lifting equipment, ensuring alignment via mold locating rings.  

   - Set clamping force according to the mold’s design specifications (avoid overloading).  

2. **Test Run**  

   - Perform 3–5 empty mold-opening/closing cycles to check for abnormalities.  

   - Conduct a **short-shot test** to verify injection consistency before full production.  

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### **4. Production Operation**  

1. **Auto Mode**  

   - Confirm all parameters, then switch to automatic mode.  

   - Monitor real-time data (pressure, temperature, cycle time) on the HMI.  

2. **Quality Control**  

   - Regularly sample and inspect products for defects (e.g., sink marks, flash).  

   - Adjust parameters incrementally if deviations occur.  

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### **5. Shutdown & Maintenance**  

1. **Safe Shutdown**  

   - Switch to manual mode, retract the injection unit, and open the mold fully.  

   - Turn off the heater and allow the machine to cool before cutting the main power.  

2. **Routine Maintenance**  

   - Clean the mold and barrel after each use to prevent material residue.  

   - Lubricate moving parts weekly and replace hydraulic oil annually.  

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### **Key Warnings**  

- **Never bypass safety sensors or interlocks.**  

- **Immediately press the emergency stop** if abnormal noise, smoke, or vibrations occur.  

- Only trained personnel should service high-voltage components.  

For detailed troubleshooting or advanced settings, consult Yizumi’s technical support or regional service centers.  

*(Note: Specifications may vary by model. Always prioritize guidelines in the official manual.)*