The Automatic Powder Filling Machine utilizes servo-driven auger metering combined with inline load-cell feedback to process fine powders, granules, and non-free-flowing materials into rigid containers or flexible pouches. The system mitigates powder airborne contamination through integrated dust-extraction shrouds and maintains a continuous dosing stability of ≤ ±0.5%. Designed for mid-to-high throughput packaging lines, it integrates seamlessly with bottle unscramblers, capping machinery, and induction sealers to establish a fully automated packaging process.
Technical Specifications
|
Parameter |
Standard Range / Specification |
Options / Customization |
|
Dosing Range |
10g – 5000g |
Multi-stage auger tooling available |
|
Filling Accuracy |
≤ ±0.5% (material dependent) |
Dual load-cell gross/net weight control |
|
Speed / Capacity |
20 – 60 containers/min |
Dual-head configurations up to 120 cpm |
|
Contact Materials |
AISI 304 Stainless Steel |
AISI 316L Stainless Steel / PTFE Coating |
|
Hopper Volume |
50 Liters (Split Hopper) |
75L / 100L with level sensor controls |
|
Control System |
PLC with 7" Color Touchscreen Panel |
Recipe management for up to 50 profiles |
|
Power Supply |
220V/380V, 50/60 Hz, 3-Phase |
Customized voltage standards |
|
Air Consumption |
0.6 MPa, 0.3 m³/min |
Integrated pneumatic dust-purging valve |
Product Features & Engineering Details
Servo Auger Dosing Engine
Direct-drive servo motors control the auger rotation down to fraction-of-a-degree increments. This direct coupling eliminates mechanical backlash found in belt-driven systems, ensuring repeat volumetric accuracy per dose cycle.
Split-Open Quick-Release Hopper
The 50L stainless steel hopper swings open horizontally without tools. Operators access the complete interior surface within seconds, reducing clean-in-place downtime during product changeovers.
Integrated Dust Collection Ports
Vacuum extraction shrouds surround the filling nozzle to capture displaced air and suspended particles at the precise moment of discharge. This keeps sealing surfaces clean and maintains factory ambient air quality.
Dynamic Weight Feedback Module
An inline load cell measures filled containers post-dosing. The PLC automatically adjusts auger revolutions for subsequent fills based on drift trends caused by raw material bulk density changes.
Material Compatibility & Flow Behavior
Different powders exhibit distinct flow dynamics during filling:
Free-Flowing Powders (Sugar, Fine Salt, Granular Chemical)
Utilize spinner disc nozzles or pneumatic cut-off valves to prevent product drip between cycles.
Non-Free-Flowing Powders (Milk Powder, Flour, Starch, Fine Chemical)
Require continuous slow-speed agitation blades inside the hopper to break bridging and deliver uniform product density to the auger flights.
Hygroscopic & Cohesive Powders (Nutraceutical Extracts, Instant Drinks)
Hygroscopic & Cohesive Powders (Nutraceutical Extracts, Instant Drinks)
Application Scenarios of Automatic Powder Filling Machine
Food Processing Lines
Filling milk powder, protein powder, coffee grounds, spices, and starch into plastic bottles or tin cans.
Pharmaceutical & Nutraceutical Processing
Dosing active pharmaceutical ingredients (APIs), herbal extracts, and dietary supplements under strict cleanroom conditions.
Chemical & Industrial Packaging
Packaging fine pigments, toner powders, dry chemical additives, and pesticides into rigid containers.
Manufacturing Integrity & Material Quality
Machined Component Precision
Augers are CNC-lathed from solid stainless steel bars, ground, and mirror-polished(Ra < 0.4 μm). This surface finish reduces powder friction and prevents product adhesion.
Sealing & Bearing Protection
Drive shafts are isolated from powder contact zones via double-lip mechanical PTFE seals. Bearings remain dry and isolated from abrasive powders, extending maintenance intervals.
Frame Rigidity & Surface Finishing
Heavy-duty welded steel tubing forms the main support frame. Non-contact panels are brushed AISI 304, featuring sloped internal drain gutters to eliminate washdown fluid accumulation.
Quality Assurance & Factory Testing
Raw Material Traceability
All contact stainless steel plates and round bars undergo mill certification verification upon arrival.
Dry Run & Endurance Testing
Every machine executes a continuous 48-hour mechanical dry run prior to assembly sign-off to stress-test electrical drive boards and pneumatics.
FAT (Factory Acceptance Testing) Protocol
We run actual customer-supplied powders through dosing tests to verify accuracy, speed targets, and dust containment efficiency before dispatch.
Procurement & Selection Guide
To select the optimal machine configuration, evaluate these factors:
Target Container Dimensions
Container height and neck opening diameter determine nozzle insertion depth and indexing wheel dimensions.
Bulk Density Variances
Inconsistent material bulk density requires dynamic weighing feedback over standard volumetric auger filling.
Target Throughput
Lines requiring over 60 containers per minute need dual-head or rotary multi-station auger layouts.
Integration & Line Upgrades
The system links directly into wider packaging automation loops through standardized mechanical and electronic interfaces:
Upstream Connection
Direct flange interfaces connect to vacuum conveyors, screw feeders, or flexible intermediate bulk container (FIBC) unloaders with automatic hopper level monitoring.
Downstream Integration
Output conveyors synchronize transfer speeds directly to inline rotary cappers, induction foil sealing units, and weight rejection stations via PLC bus networks.
FAQ
Q: How does the system handle changes in bulk density during a production run?
A: The optional dynamic checkweigher measures the filled containers downstream. If bulk density shifts, the control algorithm calculates the deviation and automatically adjusts the servo motor's turn counts on the subsequent filling cycles to preserve dosing accuracy.
Q: What is required to clean the hopper between different batch runs?
A: The hopper features a split-body design secured by quick-release clamps. Operators loosen the clamps, swing open the hopper housing, and detach the auger blade without hand tools. Total manual cleaning time takes under 15 minutes.
Q: How is airborne dust controlled during high-speed discharge?
A: The filling funnel features a dual-wall shroud connected to a central dust collection port. Negative air pressure draws fine particles away from the container neck directly into your factory extraction system, preventing sealing surface contamination.
Q: Can one machine fill both 50g small jars and 2kg large buckets?
A: Yes, by changing the auger screw assembly and funnel nozzle. Small diameter augers maintain accuracy for lower weights, while larger diameter augers deliver the volume needed for larger containers within reasonable cycle times.
Q: What spare parts are recommended for standard initial maintenance?
A: Standard recommended spares include spare silicone O-rings, drive belts, hopper seal gaskets, PTFE shaft seals, and one replacement auger screw matched to your primary fill weight.
