Overcoming the problem of small cavity sealing detection: Hirays solution ensures high yield of TWS earphones-Shenzhen Hirays Automation Technology Co., Ltd

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Overcoming the problem of small cavity sealing detection: Hirays solution ensures high yield of TWS earphones

2026.01.15

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TWS earphones are also waterproof, why do some brands have few after-sales complaints, while others frequently pay for water problems?

The answer is cruel: many products only "look waterproof", but fail to measure the "sealing" accurately and stably on the production line.

To truly implement "waterproofing" from a marketing concept to mass-produced and verifiable quality, reliable sealing testing is still needed.

Difficulty in protection: Most of the casings are made of high-gloss material. During testing, it is necessary to ensure sealing and avoid scratches.

Difficulty in detection: The internal cavity is tiny, generally only about 0.2ml inside. It is difficult for traditional air seals to identify products with large leaks whose internal volume is less than 1ml.

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Hirays TWS earphone sealing detection solution

Hairuis has customized a TWS Bluetooth headset sealing testing solution for a major headphone manufacturer, successfully achieving IPX7 or above waterproof level testing and greatly improving product yield.

Test platform:Four-station test platform with front and rear placement
Core device:HD-28 Ingenuity Series High-precision Differential Pressure Air Tightness Tester
Customized mold：High-precision profiling molds for different types of headphones

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⬆ Test Instrument

⬆ Test Platform

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⬆ Upper mold

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⬆ Lower mold

Three core advantages of the solution

Reliable and stable:Accurately detect large leaks in small cavities

High-precision detection: HD-28 ingenious series air tightness detector is comparable to the accuracy and stability of international first-line brand air tightness equipment. Equipped with advanced algorithms, it can accurately identify products with an internal volume less than 0.1ml.Large leakage products effectively solve the industry pain point of large leakage being covered up during the inflation stage.

Data management: supports test data storage and analysis, provides data support for process optimization, and achieves quality traceability

Convenient and efficient: 15 seconds/piece, UPH up to 240

Efficient cycle time:It adopts a "front-loading and rear-picking" four-station design to seamlessly connect loading and unloading, greatly saving production line space. The four channels operate independently without interfering with each other. It only takes about 15 seconds to inspect a single product, and the UPH (unit hourly production capacity) can reach 240 pieces, which is a perfect match for high-speed production lines.

Flexible deployment: The equipment has a compact structure, provides a PC-side DEMO program, supports automated integration and batch deployment, and can be easily integrated into the smart production line., to achieve unmanned operation.

Accurate and accurate: Tailor-made to prevent scratches

High-precision molds are customized for different types of headphones, using anti-static steel materials and soft rubber protective designs to ensure perfect sealing while effectively avoiding product scratches and ensuring that the test results are true and reliable.

Reason for choosing Haileisi

01 Self-developed core technology

Hirays insists on at least three technological breakthroughs every year, independently develops a complete set of sealing testing equipment, and performs well in domestic substitution. Among them, the self-developed sealing silicone has performance comparable to aviation standards and can ensure the consistency and long-term stability of testing from the source.

02Localization advantages

Professional services: An experienced local team provides full professional services from solution design to installation and commissioning.

Quick start: Provide professional instrument operation training and 7-day free prototype trial to ensure that production line personnel can quickly master operation and maintenance.

Exclusive guarantee: Provide full life cycle exclusive services, quick after-sales response, and worry-free use.

03Trusted by leading brands

Industry penetration: Deeply engaged in the field of sealing testing for nearly 20 years, serving more than 5,000 customers, covering consumer electronics, automotive electronics, new energy and other industries, meeting all sealing testing needs

Head Endorsement: As a long-term partner of many large 3C headset companies, it has 3000+ mature cases, is well versed in the precision testing needs of TWS headsets, and has mature and reliable solutions.

Conclusion.Language

Choose Hairuis’ high-precision sealing testing solution to make every pair of TWS headphones withstand the dual test of the market and users, helping you stand out in the fierce market competition and win user reputation

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