Formula automatic conveying and weighing, engineered so the batch specified is the batch delivered to the mixer.
Materials are drawn from storage by negative-pressure conveying or fed from FIBC jumbo bags, weighed to formula, and held in tank. The PLC waits for the discharge signal from the internal mixer or kneader, drops the batch, and starts the next cycle.
The operator never touches the compound, so the batch does not drift, the dust stays in the system, and the recipe written is the recipe mixed.
PAXTON serves as overseas agent for SongXing Automation, and engineers the system into the plant, including layout, building height, mixer interface and commissioning.
There is no single best configuration. Accuracy, cycle time and available building height pull against each other, and the right answer depends on the plant that actually exists.
| Vacuum conveying & screw weighing | FIBC bag feeding & screw weighing | Vacuum conveying & weighing | |
|---|---|---|---|
| Plant height required | Approx. 7 m above discharge port | 7–20 m, depending on mixer size | 3–5 m above discharge port |
| Accuracy | ± 0.2–0.5% F.S. | ± 0.2–0.5% F.S. | ± 0.2–1% F.S. |
| Cycle | 30–100 kg/min | 30–100 kg/min | 15–30 kg/min |
| Advantage | High accuracy and stability; saves plant height; good dust control | High accuracy and stability | Saves plant height; good dust control |
Read it this way: with 5 metres of headroom above the mixer, automation remains possible, but the trade-off is ±1% instead of ±0.2% and a slower cycle. Reaching ±0.2% at 100 kg/min requires the height. This decision belongs before the building or line is fixed.
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Carbon black, oils, polymer and fillers are conveyed by negative pressure or from FIBC, weighed, stored in tank and discharged on the mixer signal.
Accelerators, sulphur and activators are handled as small quantities where a two-gram error can change the cure.
Accuracy varies with ambient conditions, material properties and humidity.
Every installation is laid out in 3D before fabrication, including tanks, conveying runs, platform steel, mixer interface and clearances.
PC Intelligent Production System. The HMI manages formula, batch, feeding speed, consumption and alarms. The PC system connects to the PLC, pushes formulas and work orders to the line, logs production data to a database, and reports material consumption over the plant network.
Completed systems above internal mixers and dispersion kneaders, with barcode verification for minor ingredient handling.
A weighing system that stops is a production line that stops. Where the PLC or HMI has network access, our engineers connect directly, read the fault and work through it with the customer’s team.
Response within 24 hours, not limited to Taiwan office hours. Where the system is not networked, support is provided through photographs, screen recordings, alarm codes or a video call.
Network access for the control system is worth deciding at the planning stage. For a new line, it can be included in the system requirement.
With these three figures, PAXTON can identify which weighing method fits the project.
