Product Features
JNH series -- green sand molding machine with up and down sand shooting
1. Revolutionary Bidirectional Green Sand Compaction Technology
Our green sand molding machines with up and down sand shooting way represent a breakthrough in foundry technology. This system utilizes bidirectional high-pressure sand injection to achieve unparalleled mold density and uniformity. As a high pressure sand injection molding machine, it operates at 0.5-0.8 MPa to ensure complete pattern replication without voids or weak spots. The simultaneous top and bottom sand delivery creates perfect compaction throughout the mold cavity, making it ideal for producing complex castings with intricate details and thin walls. This advanced approach eliminates traditional limitations of conventional green sand processes, delivering 30% higher mold hardness and 40% fewer casting defects.
2. Fully Automated Precision Molding System
This auto sand injection molding machine delivers complete automation for modern foundries. The integrated PLC system controls every aspect of the molding process: automatic sand feeding, precision bidirectional shooting, high-pressure compaction, and mold ejection. The auto jector sand injection molding machine capability ensures consistent shot-after-shot performance with minimal human intervention. With a production capacity of 180-400 molds per hour and dimensional accuracy within ±0.25mm, this system significantly reduces labor costs while improving overall productivity by 50% compared to conventional molding methods.
3. High-Pressure Performance for Superior Mold Quality
Engineered as a high pressure sand injection molding machine, this equipment delivers exceptional mold quality for demanding applications. The combination of bidirectional sand shooting and high-pressure compaction (1,500-2,200 kN) achieves mold hardness of 90-95 HB, ensuring rigid molds that withstand handling and pouring operations. This sand injection blow molding machine technology provides perfect pattern reproduction with excellent surface finish, reducing cleaning and machining time by 35%. The system maintains consistent quality even with varying sand conditions, making it exceptionally reliable for high-volume production environments.
4. Industrial-Grade Durability and Efficiency
Built for 24/7 operation, this auto jector sand injection molding machine features heavy-duty construction with reinforced steel frame, tungsten-carbide shooting nozzles, and industrial-grade hydraulics. The machine's robust design ensures reliable performance in the most demanding foundry conditions with minimal maintenance requirements. Energy-efficient servo motors reduce power consumption by 25%, while the optimized sand delivery system minimizes waste by ensuring 98% utilization of molding sand. The enclosed design contains dust and noise, creating a cleaner and safer working environment.
5. Versatile Application Capability and Smart Integration
This advanced green sand molding machine accommodates a wide range of foundry applications, from small precision components to large industrial castings. The bidirectional shooting technology handles complex geometries with deep pockets and undercuts that challenge conventional machines. As a sand injection blow molding machine, it offers exceptional flexibility for various pattern sizes and configurations. Smart factory compatible with IoT connectivity, the machine provides real-time monitoring of production data, maintenance alerts, and performance analytics. This enables predictive maintenance and continuous process optimization for maximum efficiency and uptime.

Product Parameter
JNH series -- green sand molding machine with up and down sand shooting
| Model | Mold Size | Mold Height from (Cope) | Mold Height to (Drag) | Average Maximum Mold Rate (without Core setting) | Molding System |
|---|---|---|---|---|---|
| JNH3545 | (300~380)*(400~480)mm | 130~250mm | 130~250mm | 26 seconds/mold (without core-setting time) | Edge Blow + Squeeze |
| JNH4555 | (400~480)*(500~580)mm | 130~250mm | 130~250mm | 26 seconds/mold (without core-setting time) | Edge Blow + Squeeze |
JNH5565 | (500~580)*(600~680)mm | 130~250mm | 130~250mm | 26 seconds/mold (without core-setting time) | Edge Blow + Squeeze |
JNH6575 | (600~680)*(700~780)m | 130~250mm | 130~250mm | 26 seconds/mold (without core-setting time) | Edge Blow + Squeeze |
JNH7585 | (700~780)*(800~880)mm | 130~250mm | 130~250mm | 26 seconds/mold (without core-setting time) | Edge Blow + Squeeze |
Company Profile
JUNENG Machinery Co., Ltd., founded in 2011, is a prominent player in the global machine precision green sand molding industry. As a subsidiary of Shengda Machinery Co., Ltd., JUNENG specializes in the development and production of cutting-edge automatic green sand molding machine,vertical foundry green sand automatic molding machine, and complete casting assembly lines. With a strong focus on innovation, JUNENG integrates advanced technology, high efficiency, and reliability into every product.
Technical Specifications
Mold Size Range: 500x400mm to 1200x900mm
Production Capacity: 180-400 molds/hour
Mold Hardness: 90-95 HB
Operating Pressure: 0.5-0.8 MPa
Power Consumption: 30-75 kW
Sand Consumption: 0.06-0.3 m³/min
Our Vision & Values
Bidirectional sand shooting for perfect density distribution
Full automation with PLC control system
High-pressure injection for superior mold quality
Energy-efficient operation with low maintenance
IoT-ready for smart factory integration
Technical features
1. The equipment is characterized by excellent stability, low energy consumption, and an extended service life.
2. It offers a high level of automation, user-friendly operation, and effectively reduces labor requirements.
3. The system incorporates an independent sealed control unit, featuring intelligent parameter storage, convenient fault diagnosis, and intuitive operation, all of which contribute to low maintenance costs.
4. It is equipped with an imported servo hydraulic system that ensures smooth and precise operation, minimal noise output, and includes oil temperature monitoring and air cooling functions, making it energy-efficient and environmentally sustainable.
5. The innovative multi-gas source combined sandblasting technique allows for flexible adjustment of sandblasting pressure, gas flow rate, and sandblasting modes based on product requirements.
6. The dimensions of the sand box, the height of the sand mold, as well as the pressure increase and decrease set points, can be customized in accordance with the user's specific product specifications.
Commitment to Innovation
As the casting industry evolves, so does JUNENG. We continuously monitor market trends and customer needs, adapting our solutions to meet the challenges of modern manufacturing. With strategic investments in research and development about sand foundry green sand automatic molding machine, we are poised to remain at the forefront of industry advancements, providing customers with state-of-the-art green sand automatic molding machine that improve performance, reliability, and cost-efficiency.
Key Features
Higher Squeeze Pressure: Delivers consistent and uniform mold surface hardness, reducing finish machinery requirements.
Hydraulic System: Adjustable to meet the volume and variety of molding requirements with flexibility.
Rigid Post Design: Ensures durability and reliability during high-volume operations.
HMI (Human-Machine Interface): Easy-to-operate interface with programmable pattern spray and heating system.
Adjustable Mold Height: Capability to accommodate different mold sizes.
Programmable Parameters: Allows for customizable settings and troubleshooting/maintenance through HMI.
Maintenance-Free Linear Bearings: Squeeze station features maintenance-free components, ensuring longevity and efficiency.
Perpendicular Blow Fill: Advanced technique for improved mold fill and reduced molding inconsistencies.
Operator Safety: Includes a light guard to ensure safety during operations.
Conclusion
As a leading manufacturer of machine precision green sand molding, JUNENG Machinery is dedicated to delivering world-class solutions that meet the evolving needs of the casting industry. With a commitment to quality, innovation, and customer satisfaction, we strive to remain the partner of choice for businesses looking to enhance their production capabilities and stay ahead in a competitive global market.
Our reputation for high-quality products and exceptional customer service has made us a preferred supplier for leading casting companies worldwide.