Precision Melamine Powder Weighing Machine with Touchscreen and Rotary Cup Table

The Dongxin Automatic Weighing Machine is designed to measure and dispense controlled portions of melamine moulding compound and compatible powder materials before compression moulding. A 10-station rotary table moves the receiving cups through the dosing position, helping tableware factories standardize material preparation and reduce dependence on repetitive manual weighing.

The control system combines PLC control, a touchscreen interface and an electronic weighing system. Operators can set the required recipe and operating parameters from the HMI, while the machine coordinates feeding, weighing, rotary indexing and discharge. The gross-weight weighing principle is intended to provide stable quantitative control across repeated production cycles.

• Automates repetitive weighing and portioning before the moulding process.
• 10-station rotary layout supports sequential cup positioning and discharge.
• PLC and touchscreen control simplify parameter setting and operation monitoring.
• 20 L stainless-steel hopper provides a clean material-contact area.
• Catalog-rated weighing accuracy of ≤ ±0.2%, subject to material and test conditions.
• Optional feeding methods can be selected to suit different powder flow characteristics.
• Centralized dust-removal connection supports a cleaner working environment.
• Residue-contact areas are designed for convenient cleaning and product changeover.

The machine is positioned for melamine tableware plants producing plates, bowls, cups, trays and related compression-moulded products. It can be evaluated for melamine moulding compound, urea moulding compound, glazing powder and other compatible powder or small-granule materials after a material trial.

The control core integrates the PLC, HMI touchscreen and weighing system. This architecture coordinates the dosing sequence and gives the operator a centralized point for recipe settings, batch counting, machine status and alarm review. The final HMI functions and communication options should match the confirmed electrical configuration.

1. Material loading - add the approved powder to the 20 L hopper and check the feeding mechanism.
2. Recipe setting - enter the target parameters and operating sequence on the touchscreen.
3. Controlled feeding - the feeding mechanism delivers material to the weighing section.
4. Gross-weight measurement - the electronic weighing system monitors the measured quantity.
5. Automatic discharge - the measured portion is released into the receiving cup.
6. Rotary indexing - the table advances the next cup into position.
7. Cycle repetition - weighing and dosing continue according to the set production plan.
8. Cleaning/changeover - remove residue and clean product-contact areas before changing material or color.

Batch Assembly and Commissioning

Machines should be assembled, wired and commissioned against the confirmed order specification. Electrical voltage, frequency, feeding method, material-contact components and destination requirements must be finalized before production.

Recommended checks include repeated weighing accuracy, discharge timing, rotary indexing, touchscreen operation, alarm response, pneumatic leakage, fastener inspection and an empty-load/full-load trial.

After final inspection, the machine should be cleaned, protected against moisture, immobilized on a reinforced base and enclosed in an export wooden case suitable for the agreed transport method. Loose accessories, manuals and spare parts should be packed and identified separately.

• Material name, bulk density, particle size and flow characteristics.
• Required target weight and acceptable tolerance.
• Required cups per minute or expected production cycle.
• Local voltage, frequency and phase.
• Available compressed-air pressure and consumption.
• Preferred feeding method or material sample for a trial.
• Receiving-cup dimensions and downstream production process.
• Destination, trade term, installation and training requirements.

A: It is designed for compatible powders and small granules. For melamine production, the material should be reviewed by particle size, bulk density, moisture and flowability. A material trial is recommended.

A: The supplied catalog specifies a 10-station rotary layout.

A: The catalog states ≤ ±0.2%. Actual performance depends on material properties, target weight, feeding configuration, calibration and the test method.

A: The catalog states 5-20 kg, while the old webpage shows 5-3000 g. This value must be confirmed for the exact model before the page is published.

A: The catalog lists double screw, double vibration and two-speed gravity feeding as optional methods.

A: Yes. The catalog provides an air requirement, but its pressure unit contains a typographical error. Confirm the final pressure and consumption on the approved technical sheet.

A: The catalog specifies 4P AC 208-415 V, 50/60 Hz. The final electrical configuration should be confirmed for the buyer’s site.

A: The catalog describes a centralized dust-removal connection. The buyer should provide or confirm the workshop extraction interface.

A: A material trial is recommended, especially for powders with poor flowability, uneven density or stringent tolerance requirements.

A: Send material data, target weight, accuracy, output requirement, cup size, voltage, compressed air and destination.