The performance of rubber rollers has a significant impact on manufacturing quality, so customers need to inspect and control the rollers when choosing them. The performance of rubber rollers is generally divided into process state performance, finished product physical performance, and usage performance. The process state performance affects the physical performance of the finished product, while the physical performance of the finished product and the service performance determined by factory production management. The spinning process and environment have a significant impact on service performance. So how to test the performance of rubber rollers when choosing them? The editor will tell you a few inspection steps.
1. Elasticity
The elasticity of rubber rollers affects the quality level of products and the lifespan of the rollers. A rubber roller with good elasticity has a larger contact surface with the product under the same pressure, stable grip force, small spindle difference, less fiber channel creep and depression, and a longer service life.
The inspection method is as follows: first test and calibrate the pressure of the shaking frame, static press the rubber roller until a "roller print" is generated, and then the time for the handprint to disappear. The shorter the time, the better the elasticity.
2. Wire group resistance
The winding resistance of rubber rollers is the key to normal production, which is related to the roller material, surface treatment method, workshop temperature and humidity, etc. Winding resistance is a comprehensive property.
The inspection method is as follows: disconnect the normal spinning strip, remove the rubber roller, and record the start time of winding.
3. Conductivity
Conductivity is the main factor affecting the resistance of rubber rollers during dry wrapping. When the static dissipation of rubber rollers is poor, static electricity will absorb fibers to a certain extent.
The inspection method is as follows: first, balance the temperature and humidity of the rubber hose for 24 hours, clean the electrode plate and rubber roller surface of the electrical test moisture regulator, roll the rubber hose, and record the smaller value for one week. The larger the value, the better the conductivity.
4. Wear resistance
Wear resistance is an important factor affecting the lifespan of rubber rollers. After using the rubber roller for a period of time, the fiber channel wears out, the rubber roller sinks, and the clamping force of the jaws decreases. Meanwhile, worn parts are rough and prone to entanglement, requiring re grinding.
The inspection method is as follows: remove the crossbar of the yarn guide and visually inspect the concave surface by touching it with your hand.
5. Aging resistance
Rubber rollers begin to decline from the moment of production, with increasing hardness and decreasing elasticity. The lifespan of domestic rubber rollers is generally around 2 years.
The inspection method is as follows: extend the UV treatment time, generate high-temperature enhanced oxidation cracking, generate ozone accelerated aging, and test hardness and elasticity at the same time.
The above is the method for testing the performance of rubber rollers. The editor suggests that in daily situations, it is necessary to maintain the rubber rollers used every week and lubricate their rubber surfaces and interiors well.
Editor: Chihiro
