Vacuum packaging machine is a kind of vacuumizing and sealing packaging machinery. Vacuum packaging machine will be used for vacuum packaging, but many friends don't know much about this machine. This is the structure of vacuum packaging machine. The main components of vacuum packaging machine are:
1, steel structure of the whole machine
The shell of vacuum packaging machine is usually made of stainless steel or carbon steel by spray molding. Stainless steel is not easy to corrode and rust, and has a long service life, which is more suitable for food packaging or wet working environment. The vacuum chamber is made of glass.
2. Vacuum pump
Vacuum pump is the main component of vacuum packaging machine, which can be said to be the heart of vacuum packaging machine. Generally, the bigger the better, the more expensive. Therefore, considering the cost performance factor, the configuration of vacuum pump is based on the size of vacuum chamber.
3. Electronic components
The general electronic components of vacuum packaging machine mainly include solenoid valve, frequency converter, relay and computer control panel.
4. Wear resistant parts
Mainly heating strips, thermal insulation cloth, etc. , usually need to be replaced regularly.
5. Washer
Is the sealing ring above and below the vacuum chamber. If there is no sealing ring, vacuum work cannot be completed.
The above is the main structure of vacuum packaging machine. Some different types of vacuum packaging machines have other components.
Second, what is the principle of vacuum packaging machine?
The working principle of vacuum packaging machine is very simple. After the articles are put into a vacuum bag, the air in the packaging bag is pumped out by a vacuum packaging machine to reach a certain degree of vacuum (in a specified space, the gas state below one atmospheric pressure is collectively referred to as vacuum, and the gas thinness in the vacuum state is called vacuum degree, which is usually expressed by pressure value), and the sealing process can be completed. The principles of vacuum packaging machines with different structures are also different:
1. Mechanical extrusion vacuum packaging machine: use spongy objects to exhaust the air in the bag from both sides of the bag, and then heat seal the bag mouth to complete the vacuumizing operation.
2. Suction vacuum packaging machine: this machine inserts the exhaust pipe from the bag mouth, vacuumizes it by vacuum pump, and then seals it.
3. Box-type vacuum packaging machine: put the plastic bag containing articles into the vacuum chamber, cover it and vacuum it. The heat sealing device closes and seals the bag mouth after reaching the predetermined vacuum degree, which is a relatively mainstream vacuum packaging machine.
4. thermoforming vacuum packaging machine: also known as continuous vacuum packaging machine, the self-made packaging container is made on the packaging by thermoforming the sheet in the model, and then the processes of filling, sealing, vacuumizing, inflating, transverse cutting and longitudinal cutting are completed.