ZD-400 Fully Automatic Dual-Can Solder Paste Mixer with 1000 RPM for SMT Lines

ZD-400 Fully Automatic Dual-Can Solder Paste Mixer for SMT Lines

The ZD-400 fully automatic solder paste mixer is designed for controlled preparation of solder paste before the stencil printing process in surface mount technology production. Using a combined revolution-and-rotation mixing method, the machine helps redistribute solder particles and flux evenly inside a closed container without requiring operators to open the solder paste can.

The standard fixture accommodates two commonly used 500 g solder paste containers. A balanced dual-position structure supports stable operation, while a digital timer allows operators to establish a repeatable preparation procedure for different solder paste types and production requirements.

The ZD-400 is suitable for electronics factories, PCB assembly workshops, SMT production departments, research laboratories, maintenance centers, and production lines requiring regular solder paste conditioning. Its enclosed construction, straightforward control panel, automatic stopping function, and cover safety protection make it practical for daily production environments.

Common published configurations specify a 1350 RPM motor, approximately 1000 RPM revolution speed, approximately 500 RPM self-rotation speed, AC 220 V power input, dual 500 g capacity, and a compact cabinet measuring approximately 400 × 400 × 420 mm. Configuration details should be confirmed before ordering because voltage, timer controller, fixture design, and labeling may vary by production batch.

Solder paste is a carefully formulated combination of metal alloy powder, flux, activators, rheological agents, and other process materials. During transportation, refrigerated storage, or extended standing, the material may gradually become less uniform.

The following conditions may occur:

A repeatable mixing process cannot correct expired, contaminated, chemically damaged, or improperly stored solder paste. However, it can help prepare usable solder paste more consistently before printing when operated according to the paste manufacturer’s handling instructions.

Many solder paste products are stored under controlled refrigerated conditions. When removed from storage, differences in temperature may influence viscosity and printing behavior.

The paste should always be conditioned according to the solder paste supplier’s technical data sheet. The mixer is a preparation tool and does not replace the required temperature-recovery procedure.

Solder paste may remain stationary during storage or transportation. The flux system and metal powder may not remain perfectly distributed after extended standing.

A controlled planetary-style movement helps redistribute the material inside the sealed can.

Manual stirring depends heavily on the operator’s technique, speed, tool cleanliness, and mixing duration. Different operators may obtain different results from the same solder paste batch.

The ZD-400 provides timed mechanical operation, helping factories establish a more repeatable standard operating procedure.

Opening a solder paste container and stirring it manually can introduce air, dust, moisture, fibers, or other foreign material.

The ZD-400 mixes the paste while the original container remains closed, reducing unnecessary direct contact during preparation.

Operators often need to prepare solder paste quickly before starting a printing line or changing products. An automatic mixer reduces continuous manual work and allows personnel to complete other preparation tasks while the cycle is running.

A high-speed rotating system must remain properly balanced. A significant difference between the two fixture positions can increase vibration, noise, and mechanical stress.

When only one solder paste can is being mixed, a suitable counterweight must be installed in the opposite fixture.

The ZD-400 provides a practical solder paste preparation solution through five main operating principles.

The solder paste can remains sealed during operation. This minimizes unnecessary exposure to the surrounding environment and helps maintain a cleaner working procedure.

The container revolves around the central axis while simultaneously rotating around its own axis. This combined motion redistributes material inside the container without using a direct-contact mixing blade.

The digital timer allows the operator to define a preparation cycle. Once the selected period is complete, the machine stops automatically.

Two solder paste cans can be processed during one cycle. When only one can is used, the second position is fitted with a counterweight matched as closely as possible to the loaded container.

The moving assembly is contained inside the machine cabinet. Common ZD-400 configurations include a cover-linked safety function intended to stop or prevent operation when the cover is opened.

Published ZD-400 listings commonly provide the speed, capacity, dimensions, power, voltage, fixture, and weight values shown above. Timer-controller descriptions differ among suppliers, with some versions listing a 1–99-minute range and others using divided setting ranges. The exact controller, plug, voltage, fixture, and nameplate data should therefore be confirmed against the offered unit before purchase.

The ZD-400 is primarily used before solder paste stencil printing. It can be installed in the solder paste preparation room, material management area, SMT line-side workstation, engineering laboratory, or production support area.

The machine is suitable for:

• High-mix, low-volume SMT production.
• Medium- and high-volume PCB assembly.
• Prototype and new-product-introduction lines.
• Manual, semi-automatic, and automatic stencil printing processes.
• Electronics manufacturing service providers.
• Factories operating multiple solder paste batches.
• Facilities seeking a standardized paste preparation procedure.
• Production lines using common 500 g solder paste containers.
• Laboratories evaluating solder paste printing parameters.
• Repair departments performing BGA, QFN, LED, or fine-pitch rework.

Check the solder paste label, lot number, expiration date, storage condition, and supplier instructions.

Do not mix paste that is expired, contaminated, leaking, dried, separated beyond recovery, or stored outside the permitted conditions.

Remove the required solder paste from refrigerated storage and follow the temperature-recovery period specified by the solder paste manufacturer.

Do not rely on the mixer to replace mandatory conditioning requirements.

Before loading:

• Confirm that the machine is on a stable, level surface.
• Check that the chamber contains no tools or foreign objects.
• Inspect the fixture and fasteners.
• Confirm that the supply voltage matches the nameplate.
• Verify that the power cord and grounding connection are secure.
• Test the top-cover safety function according to the maintenance procedure.

Place one solder paste can in each fixture.

For best stability, use containers with similar total weight. When mixing only one can, install the supplied or specified counterweight in the opposite position.

Common operating instructions recommend minimizing the left-to-right weight difference to reduce vibration during high-speed operation.

Turn the holder carefully by hand before starting the machine.

Confirm that:

• Both containers are seated correctly.
• The cans do not touch the chamber.
• The fixture is securely locked.
• No component is loose.
• The rotating structure can move freely.

Close and secure the upper cover completely.

Never operate the machine with the cover open, damaged, bypassed, or improperly locked.

Select the cycle time according to:

• Solder paste manufacturer recommendations.
• Paste type and alloy.
• Container size.
• Storage duration.
• Internal factory procedure.
• Ambient temperature.
• Process engineering validation.

Avoid assuming that one mixing time is suitable for every solder paste.

Press the start control. The fixture begins its combined revolution and rotation movement.

The containers remain closed while the internal material is redistributed.

After the cycle finishes, allow the mechanism to stop completely before opening the cover.

Do not attempt to stop the rotating assembly by hand.

Remove the container carefully and inspect its external condition.

Check for:

• Leakage.
• Lid deformation.
• Abnormal temperature increase.
• Loose labels.
• Fixture damage.
• Unusual noise or vibration recorded during operation.

Open and use the solder paste according to the production procedure.

Record the mixing time, operator, batch, opening time, and production line when traceability is required.

Selecting the correct solder paste mixer requires more than checking the model name. Buyers should compare the electrical configuration, container size, fixture design, production volume, safety structure, and after-sales support.

The standard ZD-400 fixture is typically intended for common 500 g solder paste cans.

Before ordering, provide:

• Container diameter.
• Container height.
• Net solder paste weight.
• Gross loaded-can weight.
• Lid diameter.
• Photographs of the container.
• Required number of containers per cycle.

For syringes, cartridges, red-glue tubes, or nonstandard packaging, a customized holder may be necessary.

Standard specifications commonly list AC 220 V, 50/60 Hz. Some suppliers may provide an AC 110 V version.

Confirm:

• Rated voltage.
• Frequency.
• Plug standard.
• Grounding method.
• Destination country.
• Factory supply voltage.

Do not operate a 220 V machine from a 110 V supply, or a 110 V machine from a 220 V supply, without a properly engineered electrical solution.

The standard dual-can configuration is appropriate when factories regularly prepare one or two 500 g cans.

For purchasing evaluation, calculate:

A suitable fixture should:

• Hold the container securely.
• Prevent movement during rotation.
• Be easy to load and unload.
• Match the container diameter.
• Resist normal production wear.
• Support balanced operation.
• Avoid damaging the can or label.

Ask the supplier to confirm:

• Cover safety interlock.
• Automatic cycle stop.
• Emergency stopping method.
• Grounding connection.
• Fuse or overload protection.
• Correct warning labels.
• User manual availability.
• Electrical conformity for the destination market.

The ZD-400 is sold with different timer-panel versions. Confirm the precise setting range and adjustment increments before ordering.

A wide timer range may be useful, but repeatability, simple operation, and parameter control are more important than the maximum selectable duration.

Check:

• Cabinet material and surface finish.
• Fixture machining quality.
• Internal fastener security.
• Motor installation.
• Bearing condition.
• Cover hinge strength.
• Locking mechanism.
• Display clarity.
• Control-button response.
• Packaging protection.

A pre-shipment test may include:

The mixer should form part of a complete solder paste management system rather than operate as an isolated process.

Verify:

• Manufacturer.
• Alloy.
• Particle classification.
• Flux type.
• Lot number.
• Expiration date.
• Storage requirement.
• Transportation condition.

Maintain the storage conditions specified by the solder paste manufacturer. Use first-expired-first-out material management where appropriate.

Record:

• Removal time from refrigeration.
• Temperature-recovery start and finish.
• Mixer model.
• Mixing cycle.
• Operator.
• Container lot.
• Opening time.

Monitor:

• Paste roll condition.
• Stencil aperture filling.
• Transfer efficiency.
• Print height.
• Print area.
• Print volume.
• Bridging.
• Insufficient deposit.
• Smearing.
• Stencil cleaning frequency.

Use solder paste inspection results to validate the complete preparation and printing process. The mixer helps standardize one preparation stage, but printing results also depend on stencil design, squeegee pressure, separation speed, printer condition, environmental control, and solder paste properties.

Do not install the mixer on an unstable trolley, inclined table, thin shelf, or surface that amplifies vibration.

• Wipe the external cabinet with a clean cloth.
• Remove dust and solder paste residue promptly.
• Check the fixture for contamination.
• Inspect the cover and lock.
• Listen for abnormal noise.
• Observe vibration during operation.
• Confirm normal timer operation.

• Check visible screws and fixture fasteners.
• Inspect the power cord and plug.
• Test the cover safety function.
• Check the counterweight condition.
• Inspect rubber feet or leveling supports.
• Clean the internal chamber after disconnecting power.

• Inspect the motor and transmission mechanism.
• Check bearings for abnormal noise or looseness.
• Examine electrical terminals.
• Verify timer accuracy.
• Confirm grounding continuity.
• Replace worn fixture components.
• Review maintenance records.

Common instructions for this machine type emphasize keeping the unit clean, checking fasteners, verifying the cover-switch response, and maintaining stable installation.

1. Read the operating manual before using the machine.
2. Confirm the correct voltage before connecting power.
3. Use a properly grounded electrical outlet.
4. Keep the machine on a stable and level surface.
5. Do not operate with a damaged cover or fixture.
6. Do not bypass the safety interlock.
7. Never touch the rotating mechanism during operation.
8. Wait until movement has completely stopped before opening.
9. Keep the two fixture positions properly balanced.
10. Do not mix leaking, cracked, or deformed containers.
11. Do not place loose tools inside the chamber.
12. Disconnect power before cleaning or inspection.
13. Keep children and unauthorized personnel away.
14. Stop operation immediately if severe vibration occurs.
15. Contact qualified personnel for electrical servicing.

Please provide:

• Required quantity.
• Destination country.
• Delivery address or nearest port.
• Required voltage.
• Plug standard.
• Solder paste can dimensions.
• Gross weight of each loaded container.
• Photographs of the solder paste can.
• Need for customized fixtures.
• Preferred shipping method.
• Required trade terms.
• Requested delivery date.

Providing this information allows the supplier to confirm compatibility and prepare a more accurate quotation.

Yes. The standard configuration is designed to accommodate two commonly used 500 g solder paste cans during one cycle. Both sides should have similar total weight. When only one can is loaded, install an appropriate counterweight in the opposite fixture to maintain balance.

No. The principal advantage of the machine is that solder paste can be mixed inside its closed container. This reduces direct operator contact and unnecessary environmental exposure. The container must be sealed correctly and inspected for leakage, cracks, or deformation before loading.

Always follow the conditioning requirements provided by the solder paste manufacturer. The mixer should not be treated as a substitute for the specified temperature-recovery procedure. Incorrect handling may cause condensation, viscosity problems, printing instability, or shortened working life.

Yes, provided that the opposite fixture contains a suitable counterweight. The two sides must remain closely balanced. Operating with a large weight difference may cause excessive vibration, abnormal noise, reduced stability, or premature mechanical wear.

The standard fixture is intended mainly for common 500 g solder paste cans. Syringes, cartridges, adhesive tubes, red-glue containers, and special packaging may require a customized fixture. Please provide the container diameter, height, gross weight, and photographs for compatibility confirmation.

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