4 Heads Weigh Filling Machine | Automatic Packaging Machine

The 4-head automatic weigh filling machine is primarily designed for packaging granular materials with a small to medium production capacity. It is particularly suitable for production scenarios involving single-bag weights ranging from 50g to 2000g, frequent changes in packaging specifications, and moderate output demands.

This equipment performs material weighing, filling, bag forming, sealing/cutting, coding, and finished product output. While ensuring weighing accuracy and packaging aesthetics, the 4-head scale packaging machine offers significant advantages in equipment cost, footprint, and maintenance convenience. It represents a more cost-effective alternative to 10-head scale packaging machines.

Applications of automatic weigh filling machine

The four-head weigh filling machine is suitable for granular materials with good flowability and is widely used in the following fields:

• Food industry: automatic packaging of granular foods such as puffed snacks, French fries, potato chips, peanuts, melon seeds, candies, dried fruits, seeds, cookies, granulated sugar, MSG, tea leaves, etc.
• Daily consumer goods: suitable for small to medium-sized products with certain requirements for packaging accuracy and appearance.

Weigh filler packaging machine performance

• Compact structure, stable operation: rational layout with minimal footprint ensures smooth operation, ideal for small-to-medium factories or space-constrained production environments.
• Intelligent control, simple operation: equipped with a PLC control system and color touchscreen for quick setup of packaging weight, bag length, speed, and other parameters.
• Servo film feed for aesthetic packaging: precise system positioning delivers consistent bag dimensions, resulting in neat and visually appealing finished packages.
• Reduced labor costs: streamlined operation from material feeding, weighing, filling, bag forming, sealing, date printing to finished product conveyance—all completed in a single pass.
• Multiple packaging formats available: supports single-bag cutting and multi-bag cutting functions, with optional configurations for perforation, nitrogen flushing, and other specialized features.

Machine structure and working principle

1. Elevator feeder: continuously and uniformly conveys materials to the feed hopper.
2. Material distribution system: the inlet distributes materials to individual small hoppers, ensuring stable feeding to all four weighing heads.
3. 4-head electronic combination weigher: performs independent weighing and sequential discharge for stable measurement and continuous packaging.
4. Vertical packaging machine: completes bag forming, filling, sealing, coding, and cutting operations.
5. Finished product conveyor: automatically outputs packaged products for easy case packing and subsequent processing.

The entire system operates seamlessly with clear logic, ensuring packaging efficiency while prioritizing operational and maintenance convenience.

4 Head vs 10 Head weigher comparison

Compared to 10-head packaging machines, which are better suited for high-output, high-speed automated production lines, 4-head weigh filling machines are more appropriate for the following requirements:

• Moderate output demands with greater sensitivity to equipment investment budgets.
• Relatively uniform packaging materials and narrower weight ranges.
• A desire to maintain automation levels while controlling overall equipment costs.

Both types share highly consistent control systems, packaging principles, and automation processes, allowing customers to flexibly choose based on actual production capacity and development plans.

Item	4 Head (TH-520)	10 Head (TH-720)
Weighing heads	4	10
Suitable production scale	Small to medium output	Medium to large output
Packing speed	5–50 bags/min	5–50 bags/min (higher efficiency at large weights)
Weighing accuracy	±1%	±1%
Packing weight range	50–2000 g	Up to 6000 ml (Max)
Max bag width	250 mm	350 mm
Max film width	520 mm	720 mm
Bag length	80–400 mm	100–500 mm
Control system	PLC + Touch Screen	PLC + Touch Screen
Film pulling system	Servo motor	Servo motor
Machine size (L×W×H)	1200 × 600 × 1900 mm	1780 × 1350 × 1950 mm
Machine weight	180 kg	Heavier, industrial-grade
Power consumption	500 W	5 kW
Suitable materials	Granules, snacks, sugar, tea, seeds	Granules, blocks, snacks, nuts, pet food
Investment cost	Lower	Higher
Typical applications	Start-up factories, limited space	Large factories, continuous production

For more details about the 10-head weighing and packaging machine, please click: 10 Heads Weighing Packaging Machine | Weigher Packing Machine.

Feel free to contact us anytime for professional selection advice and detailed quotations. We will provide you with efficient, stable, and reliable packaging solutions.