Wuxi Xielì is the core manufacturer of mobile weighing and batching systems.

Mobile Weighing and Batching System Mobile Weighing System The reason it can replace traditional fixed systems and is widely used in industries such as friction materials and refractory materials is that it has overcome numerous technical challenges.

Its technological core can be summarized into the following six key areas:

1.  Dynamic High-Precision Weighing and Stabilization Technology (the Most Critical Challenge)

Mobile devices generate vibrations and inertial forces during movement, as well as when starting and stopping, which severely disrupt weighing accuracy.

High-sensitivity sensor selection: Typically, cantilever beam or shear beam high-precision sensors are chosen (with accuracy up to...). C3/C6 Grade), featuring extremely low creep and excellent resistance to lateral forces.

Mechanical Damping and Limiting Structure:

Design a specialized flexible connection mechanism to isolate the transmission of horizontal vibrations from the vehicle body to the weighing hopper during operation.

Equipped with overload protection and limit devices to prevent material impact from damaging the sensor, while ensuring that the weighing hopper can freely float in the vertical direction.

Digital filtering algorithm:

PLC It internally integrates advanced filtering algorithms (such as moving average filtering and Kalman filtering) that can实时ly filter out transient jitter signals caused by vehicle start-stop operations and rail joints.

Dynamic zero-point tracking: Automatically compensates for zero-point drift caused by temperature changes or the accumulation of trace amounts of dust.

Roughly add -  Precise “Dual-Speed Control”: The feeding motor is controlled via a frequency converter to achieve “fast feeding approaching the target.” ->  Slowly and precisely in place ->  The three-stage control for “point-and-feed” ensures that even in dynamic environments, accuracy remains within ± 0.1%~0.5% The accuracy.

2.  Fully enclosed dust-proof and sealed docking technology

This is the key to addressing the industry’s environmental pain points, requiring the system to achieve “zero leakage” during mobile material pickup and discharge.

Adaptive sealing interface:

Top material feeding: The top of the cart is equipped with an inflatable sealing ring or an elastic, retractable skirt. Once the cart is aligned with the hopper, the sealing ring inflates and expands or is mechanically pressed tightly against the hopper’s outlet, creating a rigid seal that effectively prevents dust from escaping.

Bottom discharge: A double-layer flap valve or a telescopic chute is used. During discharge, the chute is inserted directly into the deep part of the mixer’s feed inlet, creating a sealed passage.

Negative-pressure linked dust removal:

Negative-pressure suction inlets built into the system or linked to the central dust collection system. At the moment the valve is opened, the pressure differential instantly sucks up the airborne fine dust particles, maintaining a slightly negative pressure at the interface.

Positive-pressure anti-blocking design: For materials that are prone to moisture absorption or bridging, dry compressed air can be introduced into the sealed chamber, providing both dust prevention and improved flowability.

3.  Intelligent Scheduling and Path Planning Algorithms (WCS/RCS)

When multiple small vehicles are operating on the same track or in the same area, the software is the brain.

Multi-vehicle collision avoidance and traffic control:

o Based on the time-window algorithm or section-locking mechanism, the system calculates the position and speed of each vehicle in real time, automatically adjusting departure intervals to prevent rear-end collisions or side impacts.

Supports priority policies (such as prioritizing emergency prescriptions for expedited processing).

Optimal Path Planning:

Based on the distribution of raw materials in the storage bins according to the recipe, the system automatically calculates the shortest travel path to minimize empty-trip time.

Dynamic task allocation: If a vehicle malfunctions, the system automatically assigns the task to an available vehicle, ensuring uninterrupted production.

Formula logic interlock: The software enforces strict checks on the order of ingredient addition to prevent formula errors caused by human intervention—for example, adding liquid ingredients before powder ingredients when such a process sequence is required.

4.  Precision Positioning and Navigation Control Technology

The small vehicle must be accurately positioned directly beneath each hopper (the error typically needs to be controlled within ±). 5mm Within this range; otherwise, a sealed connection cannot be achieved.

Tram system ?(RGV) ：

Encoder +  Address recognition chip /RFID By reading the metal address plates located alongside the track or RFID The labels undergo absolute position correction to eliminate cumulative errors.

Servo motor closed-loop control: Achieving smoothness S Sine-curve acceleration and deceleration ensures smooth stopping and reduces material sway.

Trackless system ?(AGV) ：

SLAM Laser navigation or magnetic strip + QR code-based composite navigation.

Visual-assisted alignment: During the final docking phase, an industrial camera is used to identify feature markers at the bottom of the hopper, enabling micron-level fine-tuning and alignment.

5.  Special Material Handling and Cross-Contamination Prevention Technologies

Customized treatment solutions are required based on the physicochemical properties of different materials.

Bridge-Resistant and Arch-Breaking:

For fibers and ultrafine powders, high-frequency vibrators, pneumatic rapping devices, or flexible stirring blades can be integrated at the hopper inlet or silo outlet to prevent material blockage.

Anti-static and explosion-proof:

The entire vehicle features antistatic coating, and all components are reliably grounded.

For explosive materials such as aluminum powder and magnesium powder, select motors and electrical components that are ... Ex d IIB T4 Explosion-proof products of Level and above, equipped with rupture discs.

Self-cleaning system ?(CIP) ：

Equipped with a high-pressure air purging or automatic brushing device. Before changing formulations, the cart automatically runs a cleaning program to remove residues from the weighing hopper and valves, thereby preventing cross-contamination.

6.  Data Traceability and System Integration Technologies

Full-process data black box:

Record the actual weighing value, timestamp, operator, and environmental parameters (temperature and humidity) for each gram of material.

Data is tamper-proof and meets the requirements. GMP 、IATF16949 Quality system requirements.

Seamless interface:

Provide standards API/OPC UA Interface, with the upper layer ERP (Enterprise Resource Planning), MES Deep integration with the Manufacturing Execution System enables automatic recipe distribution, real-time inventory deduction, and automatic generation of quality reports.

Summary: Where are the technological barriers?

The technological barrier to mobile weighing systems does not lie in the hardware itself, but rather in... " Seeking stillness within movement. " System integration capabilities:

1.  How can laboratory-level weighing accuracy be achieved on a mobile platform subject to intense vibrations?

2.  How can we achieve an absolutely sealed, dust-free environment during frequent docking and movement?

3.  How can we achieve efficient scheduling with zero conflicts in complex scenarios involving concurrent vehicles?

It is precisely by resolving these three core contradictions that mobile weighing systems have become the ideal solution for the modern powder industry—particularly in the fields of friction materials and refractory materials.