Introduction of Lubricants and Lubrication System of Knitting Machine

A lubricant is a substance that is introduced between two surfaces in mutual contact to reduce friction and wear. It forms a thin film or layer that separates the surfaces and allows them to move smoothly over each other with minimal resistance. Lubricants can be in the form of liquids, such as oils and greases, or solids, such as graphite and molybdenum disulfide.

Functions of lubricants:

  • Reduces Friction: The primary function of lubricants is to reduce friction between two surfaces in mutual contact. By creating a lubricating film, they allow smooth relative motion between the surfaces, reducing resistance and energy loss.
  • Reduces Wear & Tear, Surface Deformation: Lubricants help prevent excessive wear and tear on the surfaces in contact. They minimize surface deformation and prevent damage, extending the life of the components.
  • Acts as a Coolant: In certain applications, lubricants dissipate heat generated during friction, acting as coolants and preventing overheating of the machinery.
  • Provides Protection Against Corrosion: Lubricants form protective barriers on the surfaces, shielding them from moisture and preventing corrosion and rust.
  • Acts as a Seal: In some cases, lubricants also serve as effective seals, preventing the entry of contaminants into the contact area.
  • Improves Efficiency of the Machine: By reducing friction and wear, lubricants contribute to improved overall machine efficiency and performance.

Types of Lubricants:

There are two types of available lubrication systems:

a) Pulsonic

b) Uniwave

Pulsonic Lubrication System:

The PULSONIC lubrication system precisely meters a small amount of oil per pulse to ensure that oil is only distributed to the points required. It is possible to individually program the amount of oil fed to each lubrication point. The system greatly reduces oil consumption. The external surface of the knitting machine remains dryer and the number of oil spots on the knitted fabric is greatly reduced.

Pulsonic Lubrication Components:

1. Reciprocating Rotary Piston: Controlled by a stepping motor, this piston pumps the required amount of oil to the selected lubrication point. It creates a vacuum to draw in new oil from the reservoir.

2. Fuko Sensor: A series of sensors monitor the operation and oil flow of the Pulsonic system, displaying any system faults.

3. NKS Needle Head Lubrication (Optional): This component lubricates knitting machine components subject to high stresses, such as needle heads and latches, using an air-oil mixture. User-programmed intervals optimize lubrication for extended needle service life.

4. Flush/Wash Function: This function flushes the knitting elements with oil to remove dirt and prevent it from contaminating the knitted fabric during production. It requires a machine controller to operate.

5. Lubrication Points: The Pulsonic system is available with either 12 or 24 oil outlets for distributing oil to different lubrication points.

Uniwave lubrication System:

The Uniwave lubrication system provides uniform lubrication to needles, cam tracks, sinkers, and other knitting machine components. Its patented nozzle construction separates the air-oil mixture into air and droplets of oil, reducing oil mist in the knitting workshop. The compact Uniwave lubricator is designed for durability and a long service life.

Uniwave Lubrication Components:

  • Flusher: The flusher unit is responsible for flushing and cleaning knitting machine components. It can operate with both manual and electrical control, ensuring that the components are free from dirt and contaminants.
  • Air-Regulator Unit: A separate air-regulator unit is used to regulate the air supply to the cleaning system. This unit controls the air pressure required for the lubrication process.
  • Low-Pressure Sensor: The low-pressure sensor is a safety feature that detects when the compressed air supply to the knitting machine is interrupted or drops below the specified minimum. When the pressure is insufficient, it stops the knitting machine to prevent any potential damage.
  • Low Oil Level Sensor: The low oil level sensor is another safety feature that immediately stops the knitting machine when the oil level in the lubrication system drops below the preset minimum. This prevents any potential damage to the machine due to inadequate lubrication.

The lubrication system in an engine plays a crucial role in reducing friction and preventing wear between moving parts. Its primary purpose is to supply clean oil at the right temperature and pressure to all engine components. The lubrication oil can be delivered through a splash system, a pressurized system, or a combination of both methods. In the case of a two-stroke engine, the oil is mixed directly with the fuel before being used for lubrication.

Leave a Reply

Your email address will not be published. Required fields are marked *