Semi-Automatic 4-Head Weighing Packaging Machine for Granules | High-Speed Four-Hopper Quantitative Filler
Share to:
The semi-automatic 4-head weighing packaging machine is engineered for high-speed, precision quantitative filling of granular and free-flowing materials. Featuring four independent weighing hoppers operating in alternating discharge cycles, the system significantly improves throughput while maintaining weighing accuracy. Integrated with multi-stage vibratory feeding, high-sensitivity load cells, and an intelligent PLC control interface, the machine ensures stable dosing performance. Manufactured with food-grade SUS304 stainless steel contact parts, it offers corrosion resistance, easy sanitation, and seamless integration with bag sealing systems, conveyors, and semi-automatic packaging lines.
Machine Overview and Functional Description
This semi-automatic four-head weighing packaging machine is a high-efficiency quantitative dosing solution specially developed for small-weight granular and irregular material packaging applications. The system adopts four independent weighing hoppers operating in an alternating discharge sequence, which effectively reduces waiting time. Compared with traditional single-hopper equipment, it offers higher packaging efficiency.
To ensure precise weight control, the machine adopts a three-stage vibratory feeding mechanism (coarse feeding, medium feeding, and fine feeding) combined with high-precision digital load cells, enabling rapid target weight achievement while reducing overweight deviation and material waste. The optimized feeding structure improves material flow consistency, particularly for products requiring stable metering performance.
Designed with strong production-line adaptability, the equipment can directly discharge into bags, drums, or containers, and can be integrated with bag sewing machines, heat sealers, conveyors, or semi-automatic bagging systems, depending on package specifications and production requirements.
All material-contact components are fabricated from food-grade SUS304 stainless steel, offering excellent corrosion resistance, hygienic performance, and simplified cleaning. The detachable weighing buckets facilitate fast maintenance and product changeover, minimizing downtime.
The machine features an intelligent PLC-based control system with touchscreen HMI, enabling intuitive parameter setting, production adjustment, and operational monitoring. For dust-sensitive environments, the structure supports integration with external dust collection systems to maintain a cleaner production environment.
Widely used in food, agriculture, chemicals, feed, and hardware industries, this equipment delivers high-speed, accurate, and reliable weighing performance for granular packaging operations.
Application Areas and Suitable Materials
Food Industry: Rice, nuts, roasted snacks, dried fruits, sugar, salt, monosodium glutamate (MSG), chicken seasoning, coffee beans, grains, pet food, candy, frozen food granules,etc
Chemical Industry: Detergent granules, washing powder, fertilizer, pesticide granules, veterinary medicine premixes, feed additives, plastic pellets, resin particles,etc
Agricultural Industry: Seeds (corn, wheat, soybean, sunflower seeds), compound fertilizers, agricultural granules, seed treatment products,etc
Hardware & Industrial Materials: Small hardware components (screws, bolts, nuts), plastic granules, crystal beads, resin materials, industrial pellets,etc
Technical Specifications
| Semi-automatic four-hopper weighing and packaging machine | |
|---|---|
| Packaging capacity | 20–1,500 g/bag |
| Packaging accuracy | ±0.5% (depending on the material) |
| Packaging Speed | 900–2,500 bags/hour |
| Power Supply | 220V 50Hz 0.7 kW |
| Machine Weight: | 220 kg |
| Machine Dimensions(L × W × H) | 1,300 × 900 × 2,000 mm |
Structural Design and Working Principle
1. Four-Head Weighing Hopper System
The four independent weighing hoppers operate in an alternating discharge sequence, significantly increasing packaging speed and reducing waiting time between each working cycle. Combined with high-precision weighing sensors, the system provides stable quantitative filling performance for small-size packaging.
2. Precision Vibratory Feeding System
Each weighing hopper is equipped with a vibratory feeder system for controlled and stable material dosing. Multi-stage feeding improves material flow consistency, enhances weighing precision, and minimizes overfeeding, particularly for free-flowing granular materials.
3. PLC Intelligent Control System
The machine adopts an advanced PLC touchscreen control system, enabling real-time parameter adjustment, target weight setting, and operation monitoring. The intuitive human-machine interface (HMI) simplifies operation and improves production reliability.
4. Visual Inspection Window
The transparent viewing window allows operators to visually monitor the feeding and weighing process in real time. This design improves production visibility, facilitates troubleshooting, and simplifies routine cleaning and maintenance procedures.
FAQs
Q1: What materials can this 4-head weighing packaging machine handle?
This machine is suitable for granular and free-flowing materials, including rice, sugar, seeds, nuts, pet food, fertilizer granules, detergent particles, feed additives, veterinary products, and small hardware components. Recommended material size should generally not exceed walnut size.
Q2: How does the machine maintain high weighing accuracy?
The system combines high-precision digital load cells with a multi-stage vibratory feeding mechanism. Coarse, medium, and fine feeding stages automatically adjust material flow to achieve accurate target weight while minimizing overfill.
Q3: Can this machine connect with bag sealing equipment?
Yes. The machine is designed for strong line compatibility and can connect directly with bag sewing machines, heat sealers, conveyors, bagging systems, or drum filling equipment, depending on packaging requirements.
Q4: Is the machine easy to clean and maintain?
Yes. The weighing buckets are removable for fast cleaning and maintenance, while all product-contact parts are manufactured from SUS304 stainless steel, ensuring hygiene compliance and reduced downtime during product changes.
Q5: What are the advantages of a four-head weighing system?
Compared with single-hopper weighing systems, the four-head alternating discharge design significantly improves packaging speed and operational efficiency. Multiple hoppers can work continuously, reducing waiting time and increasing production throughput while maintaining weighing precision.
Compliance and Certification Standards
At HONGDI Machine, we prioritize operational safety, electrical stability, and rigorous hygiene across all our custom industrial machinery. As a verified SGS-audited manufacturer, our equipment undergoes strict testing to meet and exceed global manufacturing regulations.
As demonstrated in the certification documents, our core product categories hold official CE Certifications, fully complying with the strict European Machinery Directives and Electromagnetic Compatibility (EMC) standards.
Key safety and quality guarantees include:
Certified Safe Operation: Advanced electrical and mechanical engineering that protects your facility’s personnel and ensures uninterrupted daily workflows.
Sanitary Stainless Steel Construction: Premium food-grade stainless steel contact parts designed for simplified washdowns, preventing cross-contamination and meeting strict food safety compliances.
Global Export Readiness: Dependable, customized equipment built to perform seamlessly in diverse international manufacturing environments.
Whether you are integrating a complete automated production line or a standalone unit, our CE-certified systems guarantee stable, continuous operation while protecting your product’s integrity.
Request a Free Quote
Product Categories
Technical Articles
