44bb6685b75a5baa80776bf0544e2dcb
4 month ago
Product details
1. Definition and Function
Aninjection molding machine vane pumpis a hydraulic pump specifically designed for the hydraulic system of injection molding machines. It generates vacuum and pressure through rotating vanes inside the pump body, drawing hydraulic oil from the reservoir and pressurizing it for delivery to the hydraulic circuit. This provides stable power for key operations such as mold clamping, injection, holding pressure, and ejection.
Core Functions:
• Delivers high-pressure, stable hydraulic oil flow.
• Adapts to cyclic high-load conditions in injection molding (e.g., high-pressure demands during injection).
• Enables precise control (e.g., speed and pressure adjustment) in coordination with the hydraulic system.
------
2. Working Principle
Basic Principle of Vane Pumps:
1. Rotor Rotation: The motor drives the rotor to spin inside the pump body, while vanes slide outward under centrifugal force or spring tension to contact the inner wall.
2. Volume Change: Sealed chambers form between the rotor, pump body, and side plates. As the rotor turns, these chambers periodically expand (drawing in hydraulic oil) and contract (discharging pressurized oil).
3. Hydraulic Oil Delivery: Oil is suctioned through the inlet port at low pressure and pressurized for output to the hydraulic system via the outlet port.
Optimizations for Injection Molding Machines:
• High-Pressure Design: Precision-controlled clearance between vanes and pump body to withstand high pressures (typically 10–35 MPa).
• Contamination Resistance: Enhanced wear resistance of vanes and pump body to handle potential impurities in hydraulic oil.
• Low Noise: Oblique-plate or variable-displacement structures reduce vibration and noise during operation.
------
3. Structural Features
Typical Components:
• Rotor: Central rotating part, usually steel with high-precision machining.
• Vanes: Slidably mounted in rotor slots, made of wear-resistant alloy steel or composite materials (e.g., carbon fiber-reinforced plastic).
• Pump Body: Cast iron or aluminum alloy with precision-ground inner surfaces to minimize leakage.
• Side Plates/Port Plates: Control suction and discharge windows to ensure sealing.
• Variable Mechanism (Optional): Adjusts vane eccentricity for infinite flow regulation (common in variable pumps).
Classifications:
• Fixed-Displacement Pumps: Constant output flow, suitable for basic injection molding machines.
• Variable-Displacement Pumps: Flow adjusted via vane eccentricity or speed regulation, offering significant energy savings (common in high-end machines).
------
4. Applications
Key Roles in Injection Molding Machine Hydraulics:
• Mold Clamping System: Provides clamping force to ensure stable mold closure.
• Injection System: Drives screw advancement for high-pressure injection of molten plastic.
• Holding Pressure System: Maintains injection pressure to prevent melt backflow.
• Ejection System: Controls ejection rod movement for part demolding.
Advantageous Areas:
• Small-to-Medium Injection Molding Machines: Compact design fits limited space.
• Precision Injection Molding: Low flow pulsation suits applications requiring speed stability (e.g., optical components, medical devices).
• Energy Efficiency: Variable vane pumps reduce power consumption, aligning with green manufacturing trends.
------
5. Selection Criteria
Key Parameters:
• Displacement (L/min): Selected based on required operational speed.
• Rated Pressure (MPa): Must exceed system peak pressure (with 10–20% margin).
• Speed Range (rpm): Matched to motor speed to avoid excessive wear.
• Efficiency: Prioritize pumps with high volumetric efficiency (minimizing internal leakage and heat generation).
Additional Considerations:
• Hydraulic Oil Cleanliness: Vane pumps are sensitive to contamination; require high-efficiency filters.
• Noise Control: Choose low-noise designs (e.g., oblique-plate structures) or add soundproofing.
• Maintainability: Modular designs simplify vane replacement and pump body repairs.
------
6. Common Brands and Models
International Brands:
• Rexroth (Bosch Rexroth): A10VSO series variable vane pumps.
• Parker: PV series vane pumps.
• Yuken: PV2R series high-pressure vane pumps.
Domestic Brands:
• Huade: HY series injection molding machine vane pumps.
Similar Video Recommendation
<
>
Bossgoovideo.com Contact Now
If you are interested in the product, contact Bossgoovideo.com for more information
- *To:
- Ningbo Hengnuo Hydraulic Drive Co.,Ltd
- *Message:
-
Submit
Disclaimer :
The information of Bossgoovideo.com limited shown above is provided by the user or collected on the network. Video 2B does not guarantee the authenticity,accuracy and legitimacy of Bossgoovideo.com limited information. Video 2B does not involve legal relationships and disputes between users arising from
transactions other than secured transactions on this website. Disputes shall be settled by you through negotiation.
If you are the person in charge or relevant employee of this enterprise, if you find that the enterprise information is incorrect or want to manage thiscompany, please contact us jacklee1558@gmail.com, after you claim the enterprise, you can obtain management permission, publish supplyand demand information, bring consulting orders, and remove page advertisements.
Suppliers
Ningbo Hengnuo Hydraulic Drive Co.,Ltd
Audited supplier
4 year
Main Product:
hydraulic motor ,
gear box,
hydraulic pump,
hydraulic valve ,
hydraulic winch,
hydraulic system