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| Brand Name: | Mingseal |
| Model Number: | KPS2000-R |
| MOQ: | 1 |
| Price: | $4500-$10000 / pcs |
| Delivery Time: | 7-60days |
| Payment Terms: | L/C,D/P,T/T,Western Union,D/A |
High performance Piezo Jet Valve in Speaker Hot Melt Adhesive Dispensing applications
Piezo jet valves are increasingly used in the precision dispensing of hot melt adhesives in speaker manufacturing, particularly for compact and high-performance devices such as smartphone speakers, TWS (true wireless stereo) earbuds, and smart speaker modules. These valves offer non-contact, high-speed jetting capabilities that are ideal for applying micro-doses of high-viscosity hot melt adhesives to small, complex components with tight tolerances.
In speaker assembly, piezo jet valves are commonly used to bond the diaphragm to the frame, seal acoustic chambers, fix magnetic components, or secure dust caps and covers. The non-contact dispensing method avoids damaging fragile structures like the diaphragm or coil, while ensuring uniform glue distribution and avoiding overflow, which is critical for maintaining acoustic performance and visual cleanliness.
One of the key advantages of piezo valves in hot melt adhesive applications is their ability to maintain consistent dot size and volume, even at high viscosities (20,000–50,000 mPa·s) and elevated temperatures (typically 160–180°C). With integrated heating modules for both the valve body and the adhesive reservoir, systems like Mingseal’s hot melt piezo jet valve KPS2000-R ensure thermal stability and long open time, preventing premature solidification and maximizing production uptime.
Core Advantages
Main appliaction
Bonding of the diaphragm and the bracket
Sealing and waterproofing of the vibration system
Bonding of the cover or magnetic circuit
Technical parameters
| KPS2000-R adhesive dispensing valves | |
| Minimum glue spraying amount | 0.5nl(CPK＞1.33) |
| Viscosity of glue | Medium or high viscosity(1-500,000mpas) |
| Max jetting frequency | 1200Hz |
| Corrosion resistance | All aqueous media, organic solvents, weak acids and weak bases |
| Size |
125.5×40×20mm(No runner assembly included) 125.5×75×20mm(Includes runner assembly) |
| Weight | 430g(With fluid box, no cables) |
| KPC2000 controller | |
| AC power input | AC 220V±20% |
| 0.01ms~6000.00ms,0.01ms | |
| Jetting frequency | 1~1200HZ |
| Settings display | TFT color screen |
| 10 set | |
| Reserved interface | Supports RS232/RS485 |
| Weight | 3.55KG |
| Size | 232×170×165 mm |
| Power | 275W |
FAQ
Q1: Can the piezo jet valve handle high-viscosity hot melt adhesives used in speaker assembly?
A1: Yes. Piezo jet valves are engineered to dispense hot melt adhesives with viscosities up to 50,000 mPa·s. Equipped with heating modules for the valve and tank, they maintain consistent temperature and flow, ensuring stable jetting performance during speaker diaphragm or frame bonding.
Q2: How does the valve prevent overflow or glue defects on small speaker components?
A2: With non-contact, micro-precision dispensing, piezo valves ensure uniform dot size and placement even in narrow bonding areas. This minimizes glue overflow and improves cosmetic appearance and acoustic reliability in TWS and smartphone speaker modules.
Q3: How is nozzle condition maintained during continuous high-speed operation?
A3: The valve includes heating and sealing components to prevent clogging and carbonization. Routine cleaning is simple, and the design minimizes nozzle wear, ensuring stable performance for long production runs.
About Mingseal
Founded in 2008, Changzhou Mingseal Robot Technology Co., Ltd. is a technology-driven manufacturer of high-end equipment, specializing in connection, assembly, inspection systems, and key components for advanced semiconductor packaging and precision electronics. Our solutions are widely adopted by leading customers in sectors such as semiconductor packaging, consumer electronics, and automotive electronics. With a strong presence across Asia and the Americas, we deliver reliable support and innovation globally.
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