High and low temperature bending fatigue testing machine

1、 Product Usage:

Shenzhen Puyun Electronics Co., Ltd. PY-E608D modelHigh and low temperature bending fatigue testing machine，It is a professional equipment used to test the bending performance and reliability of flexible screens and related flexible materials under different temperature environments. It is widely used for 180 degree folding testing of flexible materials such as FFC, FPC, TP, flexible circuit boards, flexible films, flexible screens, graphene, and flexible boards. The control system of the flexible screen high and low temperature repeated folding testing equipment adopts touch screen and PLC communication. The environmental temperature and humidity, bending frequency, speed, radius, and angle can be set according to user requirements.

2、 Product features:

（1） Box structure:

2.1.1. Inner box material: SUS304 # (1.2mm thick) stainless steel plate is used, which has the advantages of acid resistance, corrosion resistance, and easy cleaning.

2.1.2. Outer box material: Cold rolled steel plate with baked paint treatment, 1.2mm thick.

2.1.3. Insulation and noise: The insulation layer is made of polyurethane foam, which is lightweight, durable, and corrosion-resistant. The box door is sealed with magnetic tape, which has a beautiful appearance and high temperature control accuracy; The connection between the inner and outer boxes is made of non-metallic materials that are resistant to high and low temperatures, effectively reducing temperature conduction; The humidification method adopts isolated humidification; Equipped with a sealed refrigeration unit, it runs smoothly with low noise, and uses stainless steel finned heating tubes to heat the air, preventing rust and corrosion.

2.1.4. Load bearing bottom plate: thickened according to requirements, used for installing flexible screen folding devices to ensure stable operation during testing.

2.1.5. Test hole: Open a Φ 50mm test hole on the left side, and attach corresponding insulation accessories and special sealing soft plugs.

2.1.6. Observation window: Made of double-layer vacuum strengthened glass, with built-in LED tubes and a heating defrosting line on the inside, allowing for clear observation of the testing process inside the box.

2.1.7. Door handle: Adopting a hidden door handle, it is easy to open and close without taking up space.

2.1.8. Mobile and positioning device: High quality brake universal casters are installed at the bottom of the machine, which can easily and quickly move the machine to its position and fix it.

2.1.9. Panel: The control panel is divided into two parts, one part controls the temperature and humidity inside the box, and the other part controls the operation of the bending test machine

2.1.10. Protection: All power switches and emergency stop buttons should use switch buttons with protective covers.

（2） Bending structure:

2.2.1. Transmission: The servo motor drives the synchronous toothed belt, causing the inner and outer folding actuators to repeatedly perform folding and folding actions, achieving bending testing of flexible materials fixed on the fixture. The motor is installed outside the testing box.

2.2.2. Fixture: Composed of two flat plates with dimensions of 350 * 250mm, the angle of the plates can be adjusted, and the folded flat surface is installed inside the environmental box.

2.2.3. Bending angle: can be set arbitrarily between 0-180 °.

2.2.4. Bending radius: R1mm, R1.5mm, R2mm, etc. can be customized according to customer requirements

2.2.5. Bending speed: 5-60 times/minute, flexible adjustment according to testing requirements.

2.2.5. Control: Microcomputer and integrated circuit control, automatic measurement and control, 7-inch display screen.

（3） TheFlexible film high and low temperature bending fatigue testing machine Temperature and humidity control system:

2.3.1. Adopting precision LCD display programmable temperature controller; Intelligent digital PID microcomputer temperature control instrument; There can be multiple sets and segments of programming operations, with optional settings and programs. The time can be set arbitrarily, and the start and stop times can be scheduled. After a power outage, the cold and hot start can be set according to the scheduled settings

2.3.2. Touch sensitive settings, digital and direct display, humidity directly displayed as a percentage;

2.3.4. Convenient data processing: Can be connected to a computer (optional 232 communication interface and LAN communication interface), with a USB data transfer interface (USB flash drive), displayed on the computer, and printed with temperature, humidity, and time curves, providing strong guarantee for data storage and playback during the experimental process.

（4） Freezing and Heating Humidification System:

2.4.1. The refrigeration unit adopts the American Copeland compressor and uses environmentally friendly refrigerant (R404a), which facilitates the use of different compressors for different temperature ranges.

2.4.2. The temperature and humidity control adopts the P.I.D+S.S.R system for coordinated control of the same channel, with automatic calculation function, which can immediately correct the temperature and humidity change conditions, making the temperature and humidity control more accurate and stable.

2.4.3. High precision controllers are used for both temperature and humidity, with precise display of relative temperature and humidity performance settings. The temperature resolution reaches 0.01 ℃ and the humidity is 0.1% R.H.。

2.4.4. Nickel chromium alloy high-speed heating electric wire heating, high temperature independent.

2.4.5. The stainless steel tube is equipped with a nickel chromium alloy high-speed heating wire and high-temperature magnesium oxide powder humidification, which has a fast reaction time and long service life.

2.4.6. The heating and humidification systems are independent, and there is an automatic water replenishment device for humidity.

（5） Protection system:

2.5.1. Equipment overheating, fan overheating protection;

2.5.2. Equipment under phase/reverse phase, refrigeration system overload protection, refrigeration unit overpressure protection;

2.5.3. Equipment timed protection;

2.5.4. Equipment anti dry burning device protection;

2.5.5. Protection against leakage, operation indication, automatic shutdown after fault alarm, etc.

3、 Main technical parameters:

Flexible screen refers to flexible OLED. The successful mass production of flexible screens not only greatly benefits the manufacturing of the new generation of smartphones, but also has a profound impact on the application of wearable devices due to its low power consumption and bendability. In the future, flexible screens will be widely used with the continuous penetration of personal intelligent terminals.

A flexible screen phone refers to a phone that uses a bendable and flexible screen, also known as a rolled up phone due to its shape resembling a scroll. OLED is very thin and can be mounted on flexible materials such as plastic or metal foil. If plastic is used instead of glass, it will make the display screen more durable and lightweight. The flexible OLED panel is concave from top to bottom, with a bending radius of up to 700 millimeters.

OLED uses a plastic substrate, while the uncommon glass substrate utilizes thin film packaging technology and a protective film is attached to the back of the panel, making it bendable and less prone to breakage. Flexible screens can be curled, but not folded. Future products should be able to fold and have more variations in appearance.

The display screen is cut from the panel. Flexible displays, also known as flexible screens, are seen as the primary product of the display revolution, with the ultimate goal of transforming mobile and wearable electronic devices.

Shenzhen Puyun Electronics Co., Ltd. PY-E608D modelHigh and low temperature bending fatigue testing machine

✈️ Application in the drone industry

Currently, no direct application cases of Shenzhen Puyun equipment in the drone industry have been found in public information, but the following main application directions can be inferred based on its product characteristics:

Flexible circuit board and ribbon cable (FPC/FFC): This is a key component responsible for signal and power transmission inside unmanned aerial vehicles, with high requirements for bending stability. Puyun's equipment can simulate its repeated bending during flight and test its durability at high and low temperatures (-40 ℃ to 150 ℃).

Composite materials for drone body: Carbon fiber, glass fiber and other composite materials are commonly used for drone body. The relevant testing machine can be used to evaluate its interlayer bonding strength at extreme temperatures, preventing material delamination or cracking.

Flexible film material: A flexible film used for sensors or solar assisted endurance, and its performance also needs to be evaluated at high and low temperatures.

🚗 Application in the new energy vehicle industry

In the new energy vehicle industry, the application cases of Puyun's equipment are relatively clearer, mainly including:

Lithium battery copper foil (confirmed cooperation): Copper foil is a key negative electrode current collector for lithium batteries. Puyun has provided a non-standard copper foil bending resistance tester to the lithium battery material enterprise "Hubei Nord" to evaluate its bending resistance performance in electrolyte environment.

Other key materials (indirect applications): In addition, Puyun equipment can also be used for testing:

Solar cell film: The relevant MIT bending resistance testing machine has been delivered to "Jiangsu LT Solar" for testing photovoltaic EVA film, etc.

FPC flexible circuit board: Ensure its electrical conductivity stability over a wide temperature range of -40 ℃ to 120 ℃.