A tracking filling machine is an automatic liquid or paste filling system designed to fill bottles and containers while they continue moving along a conveyor. Unlike a conventional inline filler that stops bottles beneath fixed filling nozzles, a tracking filler moves its filling heads together with the containers during the filling cycle.
How Does a Tracking Filling Machine Work?
A typical tracking filling process consists of several stages.
1. Bottles Enter the Conveyor
Empty bottles are continuously conveyed to the filling section. Depending on the production line design, a bottle unscrambler, bottle spacing device, or upstream conveyor may be used to maintain appropriate spacing between bottles.
2. Bottle Detection
Photoelectric sensors or other detection devices identify incoming bottles and provide positional information to the control system.
The PLC uses this information to determine the precise moment to initiate the filling cycle. A "no-bottle, no-fill" function prevents the filling head from dispensing product when the expected container is missing.
3. Filling Heads Track the Bottles
After the bottle is detected, the filling heads accelerate and move in the same direction as the bottle.
The tracking system attempts to keep the nozzle aligned with the bottle opening while the bottle continues moving.
This is the key difference between tracking filling and conventional fixed-nozzle filling.
4. Filling Material Into the Bottle
The pump or metering system determines the amount of product delivered.
Depending on the application, the machine may use a piston pump, gear pump, rotor pump, peristaltic pump or another metering technology.
The correct pump depends on factors such as:
- Filling volume
- Product viscosity
- Flow characteristics
- Presence of particles
- Required filling accuracy
- Foaming behavior
- Hygiene requirements
- Product-contact material requirements
5. Tracking Heads Return
After the filling cycle is completed, the filling heads return to their starting position or move into position for the next group of bottles.
The exact motion sequence depends on the number of filling heads, conveyor speed and machine design.
Why Use a Tracking Filling Machine?
Reduced Splashing and Foaming
Tracking itself does not automatically eliminate foam or splashing. However, tracking fillers can be combined with other technologies such as diving nozzles, bottom-up filling and multi-stage filling-speed control.
For products that are prone to foaming, the nozzle can be designed to enter deeper into the bottle and gradually move upward during filling. Multi-stage speed control can also reduce the impact of high-speed liquid entering the container.
These functions are particularly useful for products such as detergents, shampoos and other foaming liquids.
Based on these requirements, SUNHAN SH-VTGF4 4 Heads Automatic Servo Gear Pump Quantitative Body Wash Lotion Viscous Liquid Paste Tracking Type Filling Machine is designed for continuous filling of moving bottles, with servo-controlled tracking and configurable filling systems for different liquid products.
- Servo gear pump controls filling
- Set filling volume directly
- For body wash, cosmetic lotion, etc
Better Integration With Automatic Lines
Because bottles can continue moving through the filling station, tracking fillers can be integrated with other continuous packaging equipment, including:
Bottle unscrambler → Rinsing system → Tracking filler → Capping machine → Labeling machine → Coding machine → Packing equipment
This can be useful when the complete production line needs to maintain a relatively continuous product flow.
Tracking Filling Machine VS Conventional Inline Filling Machine
The two systems are both used for automatic bottle filling, but their operating principles are different.
| Feature | Tracking Filling Machine | Conventional Intermittent Filler |
| Bottle movement | Bottles continue moving | Bottles normally stop during filling |
| Nozzle movement | Filling heads track bottles | Nozzles remain at a fixed filling position |
| Conveyor operation | Continuous or near-continuous | Stop-and-start |
| High-speed line integration | Well suited to continuous lines | Suitable for intermittent lines |
| Foam control | Can combine tracking with diving/multi-stage filling | Can also use diving nozzles and speed control |
| Changeover | Usually uses guides, nozzle adjustment and stored parameters | Depends on machine design |
| Control system | Commonly PLC + servo motion control | PLC or other control system |
| Typical applications | High-output liquid/paste lines | General automatic filling |
The choice should not be based only on the desired production speed. Bottle stability, product properties, filling volume, available floor space and downstream equipment should also be considered.
How Accurate Is a Tracking Filling Machine?
Filling accuracy is determined by more than the tracking mechanism.
The actual result depends on the metering technology, product properties, filling volume, nozzle design, temperature, pump characteristics and machine settings.
For a purchasing project, the recommended approach is to test the actual product and bottle and confirm:
- Target filling volume
- Acceptable filling tolerance
- Product temperature
- Product viscosity
- Number of filling heads
- Production speed
- Filling method
- Nozzle type
Which Pump Should You Choose for a Tracking Filling Machine?
The tracking mechanism controls where and when filling takes place. The pump controls how the product is metered.
Choosing the pump according to the product is therefore essential.
| Pump Type | Common Applications | Main Considerations |
| Servo Piston Pump | Sauces, creams, pastes, viscous liquids | Suitable for volumetric dosing of many medium- to high-viscosity products |
| Gear Pump | Oils, lotions, detergents and other flowable liquids | Continuous rotary metering and adjustable flow |
| Peristaltic Pump | Sensitive liquids, small-dose applications and some pharmaceutical products | Product contacts the tubing rather than the pump mechanism |
| Rotor Pump | Certain viscous liquids and products requiring gentle transfer | Selected according to viscosity and product characteristics |
There is no single pump that is suitable for every tracking filler.
How Do You Change Between Different Bottle Sizes?
Bottle changeover depends heavily on the specific machine design.
Typical adjustment points may include:
- Conveyor guide rails
- Bottle spacing
- Filling-head height
- Nozzle spacing
- Nozzle insertion depth
- Tracking parameters
- Filling volume
- Conveyor speed
- Filling speed
Many modern servo-controlled machines use a touchscreen HMI and recipe storage. Operators can save parameters for different bottle formats and recall them during subsequent production runs. Publicly available tracking filler specifications show recipe-storage functions being used for bottle and product changeover.
However, recipe recall does not necessarily mean a completely tool-free changeover.
The exact changeover procedure should therefore be confirmed with us based on the actual bottle drawings.
How Does a Tracking Filler Control Foaming?
Foaming is a product-related problem as much as a machine problem.
The following technologies may be used depending on the product:
Diving Filling Nozzles
The nozzle enters the bottle and fills from a lower position. It may then rise as filling progresses.
This can reduce the distance through which the liquid falls and may help reduce foam formation.
SUNHAN 4 Heads Automatic Servo Gear Pump Shampoo Lotion Viscous Liquid Paste Tracking Type Filling Machine is an ideal tracking type filling machine which can meet your production needs.
- Servo gear pump controls filling
- Suits for packaging shampoo, lotion, laundry detergent
Multi-Stage Filling Speed
The machine can use different filling speeds during one cycle.
For example:Fast filling → Reduced speed → Final filling
This approach can reduce turbulence near the end of the filling process.
Anti-Drip Nozzles
An anti-drip valve or shut-off mechanism can help prevent residual liquid from dripping after the filling cycle.
However, nozzle design must be matched to product viscosity and flow behavior.
Manufacturers of tracking and following fillers commonly combine these approaches for products where foaming or splashing is a concern.
SUNHAN Automatic Servo Motor Double Heads Hair Cream Sprayer Liquid Soap Car Cleaner Dish Detergent Lotion Bottle Tracking Filling Machine is equipped with anti-dripping filling nozzles to prevent product dripping during the filling process.
What Are the Typical Air Pressure Requirements?
Pneumatic components may be used for nozzle lifting, diving mechanisms, bottle handling or other machine functions.
Published specifications for different tracking filling machines commonly show working air pressure around 0.5–0.8 MPa, but the actual requirement varies by model. For example, some machines specify 0.5–0.7 MPa, while others specify 0.6–0.8 MPa.
Therefore, the correct requirement should always come from the selected machine's technical specification.
Before installation, check:
- Factory compressed-air pressure
- Air consumption
- Air quality
- Compressor capacity
- Connection size
- Required filtration and drying
Insufficient air supply can affect pneumatic movements and machine stability.
When Should You Choose a Tracking Filling Machine?
A tracking filler is worth considering when your production line has one or more of these requirements:
- Bottles need to keep moving during filling
- Production speed is limited by stop-and-start filling
- The line needs continuous conveyor flow
- Filling must be synchronized with downstream capping or labeling
- The product is prone to splashing during high-speed filling
- Multiple filling heads are required
- Servo-based motion control is preferred
- Different bottle formats need to be managed through stored parameters
A tracking filler may be less appropriate when the production volume is low, bottle positioning is highly irregular, or the product requires a specialized filling method that cannot easily be integrated with continuous tracking.
The decision should be based on the complete production process rather than the machine's headline speed.
What Information Should You Provide When Buying a Tracking Filling Machine?
Before requesting a quotation, prepare as much of the following information as possible:
1. Product:
Name and type of liquid or paste.
2. Viscosity:
Provide viscosity data if available.
3. Filling volume:
For example, 250 ml, 500 ml, 1 L or 5 L.
4. Bottle dimensions:
Bottle diameter or width, height and opening diameter.
5. Bottle material:
PET, HDPE, glass or other material.
6. Target production capacity:
For example, 3000 bottles/hour or 60 bottles/minute.
7. Foaming characteristics:
Especially important for detergent, shampoo and other foaming liquids.
8. Product temperature:
Important for heated products and temperature-sensitive formulations.
9. Required pump type:
If you already know the appropriate metering method.
10. Complete line configuration:
Specify whether the filler needs to connect with a bottle unscrambler, capper, labeler, coder or packing machine.
Providing these details allows the machine configuration to be evaluated based on the actual production conditions rather than relying only on a standard model.
Frequently Asked Questions
Is a tracking filling machine faster than a conventional filling machine?
Not necessarily in every application. Tracking technology removes the need to repeatedly stop bottles during filling, which can support higher throughput in suitable continuous production lines. Actual capacity depends on bottle size, filling volume, number of heads, liquid properties, conveyor speed and the complete machine configuration.
Does a tracking filler stop the bottles?
Normally, the purpose of the tracking system is to fill bottles while they continue moving along the conveyor.
Can a tracking filling machine fill viscous liquids?
Yes. Tracking fillers can be configured with piston pumps, gear pumps or other metering systems for suitable viscous products. However, viscosity, product behavior and filling volume should be evaluated before selecting the pump.
Can the filling volume be changed from the touchscreen?
Many servo-controlled tracking fillers use a PLC and HMI touchscreen for filling-volume and motion-parameter adjustment. Recipe storage is also available on some models. The exact functions depend on the control system and machine configuration.
Does a tracking filler require compressed air?
Some tracking fillers use pneumatic components and therefore require compressed air. The required pressure and air consumption depend on the specific machine. Published examples range from approximately 0.5 to 0.8 MPa.
Is CIP standard on tracking filling machines?
No. CIP is available on some machines or as an optional configuration, while other systems use removable product-contact components for cleaning. The cleaning method should be specified according to the product and hygiene requirements.
Conclusion
A tracking filling machine is designed for production lines where bottles need to remain in motion during filling. For this reason, the right tracking filler should be selected according to the product, bottle, filling volume, target capacity and complete production-line requirements rather than simply choosing a machine based on its advertised speed or filling accuracy.
If you are evaluating a tracking filling machine, providing the product name, bottle dimensions, filling volume and required bottles per hour is usually the best starting point for determining the appropriate pump, filling heads, tracking configuration and line layout. If you are looking for tracking filling machine, please click on the bottom right corner to chat with us or sent us emails via info@sunhanpack.com.
