Ultrasonic Plastic Welding Machine for Earbuds Charging Case from altrAsonix is purpose-built for modern TWS (True Wireless Stereo) battery case production. These compact enclosures require perfect alignment, aesthetic finishing and tight sealing around hinge areas, magnets, indicator windows and charging ports.
Why Digital Ultrasonic Welding is Essential for TWS Charging Cases
Earbuds charging cases contain lithium batteries, micro-PCBs, Type-C connectors and indicator LEDs. The digital 20 kHz ultrasonic system maintains consistent frequency, controlled amplitude and precise weld energy, ensuring:
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No internal component damage
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Zero vibration transfer to PCB
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Smooth and invisible joint lines
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Perfect fit and finish
Optimized for Premium Consumer Electronics Manufacturing
This ultrasonic welding machine is designed for OEMs, ODMs and factories producing Bluetooth earbuds, smart case enclosures and compact electronics requiring cosmetic precision.
Key Features
Digitally Controlled Welding for Aesthetic Finish
Ensures clean, invisible joint lines ideal for premium earbuds cases.
Safe for Lithium Battery and PCB Assembly
Prevents excessive vibration and heat transfer into sensitive parts.
Perfect for ABS, PC and Blended Plastics
Supports materials commonly used in TWS charging cases.
Consistent Output with High Precision
Digital tracking ensures stable welding performance even under load.
Supports Complex Case Designs
Ideal for hinge-based lids, magnet zones and curved plastic shells.
Fast Cycle Time for Mass Production
Suitable for large-scale consumer electronics manufacturing.
Technical Specifications
| Parameter | Details |
|---|---|
| Model | UPM-20K-2000W-DIGITAL |
| Frequency | 20 kHz |
| Power Output | 2000W |
| Welding Mode | Time / Manual / Energy |
| Rectifier Type | Digital |
| Input Voltage | AC 220V |
| Operation Type | Manual |
| Weight | Approx. 90 kg |
| Used For | Earbuds charging cases, TWS battery housings, ABS/PC electronics shells, aesthetic consumer enclosures |
Best Materials for Earbuds Case Welding:
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ABS
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PC
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PC+ABS blends
Product Applications in Detail
Earbuds Charging Case Housing Welding
Ensures tight sealing for upper and lower shells without visible marks.
TWS Battery Compartment Assembly
Provides safety and vibration protection for lithium batteries.
Smart Charging Dock Enclosures
Supports welding of cases with magnets, hinges and curved structures.
Indicator Light & Type-C Port Area Welding
Achieves precise sealing around transparent windows and connector cutouts.
Consumer Electronics Accessory Shells
Ideal for compact gadgets requiring precise welding.
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