What are the application scenarios of pneumatic/damping plastic parts?

Pneumatic and shock-absorbing plastic parts are the core supporting parts in the fields of industrial manufacturing, automobile, electronics, rail transit and so on, with the characteristics of light weight, corrosion resistance, good air tightness and elastic buffering. The application scenarios of the two types of plastic parts are centered on their own core performance-sealing, pressure bearing and precise matching of pneumatic plastic parts focusing on air transmission/control, focusing on vibration buffering, noise reduction and impact protection of shock-absorbing plastic parts, and most of them are fragile and core of equipment/products.

1. Pneumatic plastic parts: the core adapts to the sealing, transmission and control of the gas path system, covering all pneumatic working conditions.

Pneumatic plastic parts are made of PA6/PA66, POM, PC+ABS, fluororubber, etc., which are mainly airtight, pressure-resistant, accurate in size and aging-resistant, and can adapt to the conventional pneumatic pressure of 0.4~1.0MPa, and some high-pressure models can adapt to more than 1.6MPa. The core application is in the gas path connection, sealing, control and execution of various pneumatic systems. Mainstream scenes:

1. Industrial pneumatic equipment (core scenario)

Matching of pneumatic components: pneumatic connector (straight-through/elbow/tee), quick plug connector, gas pipe, gas nozzle, sealing ring/gasket, pressure reducing valve/solenoid valve body, valve core, cylinder end cover/piston ring;

Supporting equipment: manipulator, CNC machining center, assembly line pneumatic fixture, pneumatic punch, vacuum sucker equipment, the core function is to ensure no leakage of gas path seal and accurate gas path control.

2. Automobile industry

Vehicle pneumatic system: engine intake manifold seal, brake system pneumatic connector, door pneumatic strut seal, tire pressure monitoring valve;

Automobile manufacturing equipment: pneumatic jigs for welding line, pneumatic spray gun fittings for coating line, and pneumatic tightening machine joints for assembly line, with both temperature resistance (engine compartment-40~120℃) and earthquake resistance.

3. Electronics/3C manufacturing

Precision pneumatic equipment: miniature pneumatic joints and gas nozzles of mounter, dispenser and soldering machine, pneumatic seals of vacuum suction pen and wafer handling equipment, which require miniaturization, high precision and high air tightness, and are suitable for precise air path control.

4. General mechanical/light industrial equipment

Gas path connecting seals of printing machine, packaging machine and textile machine, air inlet/outlet sealing rings of air compressor, gasholder head gasket, pneumatic jaw joint of food packaging machine (PP/silicone material for food grade).

5. Medical equipment

Medical pneumatic equipment: gas path connectors/seals of ventilators and anesthesia machines, pneumatic connectors of dental handpieces and pneumatic control fittings of infusion pumps, which require medical-grade environmental protection, no odor and extreme air tightness, and some of them need to be resistant to disinfection solution corrosion.

Second, shock-absorbing plastic parts: the core is suitable for shock/impact buffering, noise reduction and gap compensation, covering all working conditions with vibration/noise.

Shock-absorbing plastic parts are made of TPR/TPE/TPU, EPDM, silica gel and nitrile rubber (NBR), with an adjustable Shore hardness of 30-80a. They are mainly elastic, stable, fatigue-resistant, resistant to high and low temperatures and anti-aging, and can absorb 30%-80% of the impact force in a single buffer, and the elastic attenuation is ≤5% under long-term vibration conditions (more than 100,000 times). It is the core application.

1. Automobile industry (the largest consumption and the most complete categories)

Body/chassis shock absorption: engine foot pad, gearbox shock absorption pad, chassis swing arm rubber sleeve, shock absorber buffer block, body chassis shock absorption rubber pier;

Interior/exterior shock absorption: door sealing strip (both shock absorption and sealing), center console shock absorption pad, wheel hub lining shock absorption rubber, trunk buffer block;

Core function: isolate the vibration of the engine/chassis from the vehicle body, reduce the road noise and wind noise during driving, improve the driving comfort, and protect the components from vibration and wear.

2. Industrial equipment/machine tools

Shock absorption of heavy equipment: shock absorption pads/bases for air compressors, water pumps, generators and cooling towers, and shock-proof pads for injection molding machines and CNC machining centers, to isolate the vibration of equipment during operation and prevent the vibration from affecting the machining accuracy and causing the equipment bolts to loosen;

Shock absorption of precision equipment: the shock absorption table pad of mounter and CMM requires low elastic deformation to avoid vibration affecting the measuring/processing accuracy of equipment.

3. Rail Transit/Construction Machinery

Rail transit: high-speed rail/subway door damping rubber strips, seat damping pads, bumper blocks at the junction of carriages, and rail fastener damping pads to reduce vibration and noise during driving;

Construction machinery: the cab damping pad, the operating lever damping sleeve and the damping glue connecting the car body and the chassis of excavators, loaders and cranes are suitable for harsh outdoor working conditions (high and low temperature resistance, dust resistance and oil resistance).

4. Electronics/Home Appliances/3C

Shock absorption of household appliances: rubber sleeve for shock absorber of washing machine, foot pad for compressor of refrigerator, shock absorber pad for outdoor unit of air conditioner, and shock absorber rubber ring for audio box to reduce vibration and noise caused by equipment operation;

3C product shock absorption: mobile phone/tablet middle frame cushion rubber, notebook computer foot pad, earphone silicone shock absorption plug, drone arm cushion cover, focusing on lightweight, miniaturization and high elasticity.

5. Building/furniture/daily necessities

Building damping: door and window hinge damping glue, curtain wall damping pad and pipeline damping elevator to reduce door and window switch impact and pipeline vibration noise;

Furniture/daily life: chair mats, cabinet door buffers, luggage wheel shock-absorbing sleeves, fitness equipment shock-absorbing cushions, which are mainly anti-slip, shock-absorbing and mute.

6. Logistics/packaging

Logistics turnover: express box cushioning foam (TPE material), shelf anti-collision rubber strip, forklift fork buffer sleeve;

Product packaging: shock-absorbing pads for packaging of precision instruments/household appliances, and cushioning glue for transportation of electronic products to prevent products from being damaged by impact during transportation.

Three, two kinds of plastic parts cross application scenarios (at the same time need pneumatic+damping performance)

In some industries, gas path sealing and vibration buffering are required at the same time, and the two types of plastic parts will be used together. The core scenario is:

New energy vehicle: battery pack pneumatic seal (suitable for battery pack air tightness detection/protection)+battery pack damping rubber pad (isolating chassis vibration), charging pile pneumatic connector+charging pile damping base;

Construction machinery: excavator pneumatic control joint (adapted to hydraulic-pneumatic linkage system)+cab damping pad, air compressor pneumatic seal+air compressor damping foot pad;

Precision equipment: pneumatic inflatable joint of vacuum cavity+cushion of vacuum equipment damping table, pneumatic fittings of semiconductor manufacturing equipment+rubber sleeve of equipment damping.

Core summary

The application core of pneumatic plastic parts is * * "gas path correlation". As long as there are scenes of pneumatic control, gas path transmission and air pressure sealing, they must be matched. The core requirements are air tightness, pressure resistance and accurate size * *;

The application core of shock-absorbing plastic parts is * * "vibration/impact/noise correlation". As long as there are scenes of equipment operation vibration, product transportation impact and parts contact noise, they must be matched. The core requirements are elasticity, stability, fatigue resistance and adaptability to working conditions.

Both types of plastic parts belong to general industrial accessories, and the downstream covers almost all manufacturing industries. With the development of industrial automation, automobile lightweight and precision manufacturing, the demand for high performance, customization and miniaturization continues to increase (such as high-pressure pneumatic parts for new energy vehicles and miniature shock absorbers for precision equipment).