Technical Overview & Working Principle

This industrial-grade powder filling machine utilizes closed-loop PLC and servo motor control synchronized with an inline dynamic checkweigher. Designed for fine and micro-dose powder handling, the system dynamically adjusts auger revolutions based on real-time weight feedback to eliminate batch drift caused by variable powder bulk density.

Core Dosing Mechanism: Direct-drive AC servo motor with programmable multi-stage rotation profiles.

Control Architecture: Siemens / Allen-Bradley PLC paired with Schneider low-voltage components and a 10-inch color HMI recipe storage (up to 100 profiles).

Hopper Design: Split-type quick-release hopper, internal Ra <= 0.4 um mirror finish to prevent bridging of cohesive powders.

Technical Specifications

Specification Item	Standard Configuration	Optional Customization
Filling Range	5g - 500g	1g - 5kg (Interchangeable auger tooling)
Filling Accuracy	+/- 0.5% to +/- 1% (Dependent on powder flowability)	High-precision feedback mode (+/- 0.2%)
Speed Capacity	30 - 60 containers/min	Multi-head configurations up to 120 containers/min
Contact Materials	SUS316L Stainless Steel	Hastelloy or FDA-compliant PTFE seals
Electrical Components	Siemens PLC, Schneider Relays, Panasonic/Yaskawa Servos	Customized to match plant-wide electrical standards
Power Supply	380V, 50/60Hz, 3-Phase	Customized per regional industrial standards
Compressed Air	0.6 - 0.8 MPa, 100 L/min	Oil-free dry air required

Engineering Materials & Manufacturing Process

Durability and hygiene compliance rely strictly on raw material pedigree and machining precision:

Material Traceability: All material test reports (MTRs) for SUS316L contact parts are provided upon delivery to meet cGMP compliance.

Machining Precision: Auger screws and dosing tubes are CNC-machined from solid bar stock to maintain tight diametric tolerances (+/- 0.02 mm), preventing material shearing and frictional heat buildup.

Surface Treatment: Mechanical polishing followed by electropolishing achieves a surface roughness of Ra <= 0.4 um, preventing powder residue accumulation and microbial growth.

Application Matrix & Material Compatibility

The machine handles diverse powder characteristics through custom screw pitch and tooling selection:

Pharmaceutical APIs

High-containment configuration with O-ring sealed enclosure and WIP (Wash-in-Place) capability.

Fine Chemicals & Metal Powders

Explosion-proof (ATEX Zone 2 / Exd IIBT4 rated) motor options and sealed dust extraction shrouds.

Food & Dairy Powders

Tool-less teardown architecture enabling complete sanitation washdown within 15 minutes.

Quality Control & Factory Testing

Every unit undergoes rigorous validation before dispatch from our manufacturing facility:

Dimensional Inspection: Laser coordinate measuring machine (CMM) verification of auger pitch and funnel concentricity.

Electrical Safety Test: High-potential (Hi-Pot) insulation resistance testing and grounding continuity verification per CE standards.

Dry Run & FAT: 72-hour continuous empty-load run followed by a 4-hour simulated powder trial using customer-supplied samples. A full Factory Acceptance Test (FAT) report and video record are supplied.

Request a Technical Proposal & Material Trial

To quote the correct auger tooling and checkweigher sensitivity for your production line, please provide the following parameters in your inquiry:

01/

Powder Name & Bulk Density (g/ml):

02/

Target Fill Weight & Tolerance Requirements:

03/

Container Type & Dimensions (Glass bottle, plastic jar, pouch):

04/

Required Output (Containers per minute):

[Submit Specifications & Request Quote] (Direct link to technical RFQ form)

Frequently Asked Questions

Q: How does the machine compensate for bulk density variations in cohesive powders?

A: The system utilizes a dual-loop feedback mechanism. An inline checkweigher measures every filled container. If the weight deviates from the setpoint by more than the pre-programmed threshold, the PLC automatically adjusts the servo motor rotation angle for subsequent doses in real time.

Q: What tooling changes are required when switching between different fill weights?

A: For adjustments within the same container neck size, changing the auger screw and funnel attachment takes approximately 10 minutes. Tool-less quick-release clamps minimize mechanical downtime.

Q: How is dust control handled during high-speed filling?

A: A dedicated dust extraction port is positioned directly around the filling nozzle. It connects to your central vacuum system, capturing airborne fine particles before they settle on container sealing surfaces.

Q: What documentation is supplied for pharmaceutical validation?

A: Each machine ships with a standard validation package including IQ/OQ protocols, material certificates (3.1b), welder qualification records, calibration certificates for load cells, and electrical schematics.

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Precision Powder Filling Machine