WinCK901 & WinCK920 Vertical Screw Gravimetric Feeders Launched to Solve Precision Micro-Dosing Challenges of Poor-Flow Powders

In laboratory R&D and small-batch military production for fine chemicals, pharmaceuticals and advanced new materials, agglomerated, bridging-prone and poorly flowable powders have long plagued manufacturers with poor feeding accuracy, difficult automatic integration and cumbersome cleaning & material changeover.

To meet micro-dosing demands ranging from milligrams to 20 grams, MoveWeigh has rolled out two bench-top high-precision models: the WinCK901 and WinCK920 vertical screw gravimetric feeders. Adopting a vertical screw structure, closed-loop weighing feedback control and modular quick-disassembly design, the two units cover dual weighing ranges of 1 g and 20 g. Suitable for standalone laboratory operation and integration with robotic automated production lines, they fill the market gap in precision micro-dosing equipment for poorly flowable powders.

1. Proprietary Vertical Screw Structure for Poor-Flow Powders & Granules

Both the WinCK901 and WinCK920 developed by MoveWeigh feature a vertical screw feeding core architecture, specially developed to handle caked, highly viscous fine powders and ultrafine particles that cannot be conveyed by conventional vibratory or horizontal screw feeders. The design effectively eliminates common industry issues including powder bridging, intermittent material discharge and uneven output.

Two standardized range variants cover full workflows from micro lab trials to pilot batch dispensing:

1. WinCK901 (0.2 L hopper): Standard weighing range of 1 g, ideal for micro reagents, precious metal catalysts and micro-dosing of pharmaceutical APIs to deliver ultra-precise milligram-level feeding.

2. WinCK920 (1.5 L hopper): Standard weighing range of 20 g, suited for small-batch laboratory formulation, electronic materials and military powder dispensing to accommodate larger single-batch dosing requirements.

The entire machine body is constructed of stainless steel with an integrated auxiliary agitator that continuously breaks up material agglomerates for consistent, uniform feeding. The feeding column features height adjustment to match filling vessels of varying heights, compatible with vials, beakers, reaction kettles and other receiving containers. Equipped with premium high-precision load cells selected by MoveWeigh, the unit achieves a readability of up to 0.1 mg with stable, controllable dynamic dosing error.

2. Closed-Loop Intelligent Weighing Control with Full Automation Compatibility

Unlike traditional volumetric screw feeders that estimate material output solely via screw rotational speed, the WinCK901 and WinCK920 are fitted with a real-time weighing feedback closed-loop control system independently developed by MoveWeigh. The system dynamically captures weight signals throughout the feeding cycle and automatically adjusts screw speed to steadily approach the target dosing weight, eliminating formulation deviations caused by fluctuations in material density.

A touchscreen HMI control panel comes standard with a full suite of automation-ready functions customized by MoveWeigh:

• Automatic vessel detection: The filling sequence initiates automatically once a container is placed on the weighing platform, eliminating manual triggering.

• Optional automatic refilling mechanism to reduce frequent manual top-ups.

• Modular quick-disassembly construction: The screw, hopper and discharge head can be rapidly detached for dead-spot-free cleaning, preventing cross-contamination during formula changeovers.

• Seamless integration with robotic arms and automated production lines as a standard metering module for compact smart manufacturing cells.

3. Standardized Industrial Communication for Digital Production Traceability

Aligned with Industry 4.0 digitalization and GMP-compliant manufacturing standards, the two screw feeders from MoveWeigh deliver comprehensive built-in data exchange capabilities:

1. Onboard local storage retains complete batch weighing data with permanent production records.

2. Dual communication ports: Serial Modbus RTU and Ethernet Modbus TCP for direct connection to PLCs, upper computers and MES (Manufacturing Execution Systems).

3. Auto-upload of dosing weight, discharge duration and equipment operating status to generate tamper-proof electronic batch records, complying with stringent quality traceability standards in pharmaceutical, military and fine chemical industries.

4. Multi-Sector Application Scenarios Covering Laboratories to Small Automated Production Lines

Boasting three core strengths — ultra-high micro-dosing precision, easy integration and simplified cleaning — the WinCK901 and WinCK920 vertical screw gravimetric feeders by MoveWeigh serve a wide range of niche industries:

• Pharmaceutical industry: Micro filling of active pharmaceutical ingredients (APIs) and powder vials

• Fine chemical industry: Small-batch formulation of catalysts and high-end additives

• Advanced electronic materials: Trial micro-dosing of lithium-ion battery powders and ceramic raw materials

• Military & biological laboratories: Precision formulation of special powders and high-value reagents

• Automated equipment integration: Fully automatic gravimetric feeding stations paired with robotic manipulators