The difference between welding machine and welding machine

 

 

 

Welding machine according to the material is mainly divided into: plastic welding machine and metal welding machine two. The technologies applied mainly include: ultrasonic wave, high cycle wave, plasma, electrothermal, rotary and so on.

 

 

 

Among them, the plastic welding machine is used for welding polyethylene, polypropylene, polypropylene, nylon and other thermoplastic engineering sheets or products. When the operation, the plastic electrode is melted out, and make the welding parts with the fusion and bond. It is widely used in the welding and maintenance of plastic equipment, plastic floor laying, plastic pipe connection, plastic bottle sealing and other operations.

 

 

 

Metal welding machine is mainly used to weld metal materials.

 

 

 

 

 

Automatic welding machine:

 

 

 

The solar cell automatic welding machine (see the following figure) can weld the front and back of the cell automatically and continuously according to the setting requirements to form a battery string. When welding, the welding belt will automatically feed and cut off, and the battery string will automatically receive the material after welding. The welding method includes infrared lamp welding method and high frequency electromagnetic induction welding method.

 

 

 

Compared with manual welding, full-automatic string welding machine and full-automatic single-chip welding machine have the following advantages:

 

 

 

Fast welding speed, good quality consistency, beautiful surface, no manual welding solder uneven phenomenon. Equipment welding can avoid the influence of various human factors during manual welding, such as the influence of operator's proficiency, physical condition, emotional impact, so as to ensure the consistency and reliability of welding.

 

 

 

Can reduce the number of operators and inspectors, reduce the management difficulty and product costs. Now the labor cost increases year by year, the annual recruitment is a headache for the boss, automatic welding machine greatly reduce the number of employees.

 

 

 

The welding reliability of the string welding machine is far greater than manual welding. Poor welding is an important cause of premature failure of components. The design life of solar photovoltaic modules is 25 years, and the modules are usually installed in the outdoor environment, which can withstand temperature changes of about 30℃ every day. In addition to seasonal changes, the temperature changes are even greater. Since the base material is pure copper, the expansion coefficient of copper is about six times as high as that of silicon (the cell). This difference means that as long as there is a change in temperature, the force will be exerted on the weld between the strip and the cell. Therefore, poor welding will lead to a decrease in the power of the component, which will lead to the failure of the component in severe cases. Manual welding the cause of bad welding has a lot of, such as the temperature of the soldering station, flux coating, soldering iron temperature, staff proficiency, etc., some aspects can be addressed by effective management, and in some cases is unable to fully control, for manual welding process factors affecting the reliability of the welding, automatic series welding machine can get a good solution.

 

 

 

 

 

Ultrasonic welding machine

 

 

 

When the ultrasonic wave ACTS on the thermoplastic plastic contact surface, it will produce tens of thousands of high-frequency vibration per second. Such high-frequency vibration reaching a certain amplitude will transmit the ultrasonic energy to the welding area through the upper welding piece. Due to the large acoustic resistance at the welding area, the local high temperature will be generated. Also, due to the poor thermal conductivity of the plastic, it could not be distributed in time and gathered in the welding area, resulting in the rapid melting of the contact surface of the two plastics, together with a certain pressure, to make it into one. When the ultrasound stops, let the pressure continue for a few seconds to solidify, forming a strong chain of molecules that can be welded to a strength close to that of the raw material. The quality of ultrasonic plastic welding depends on the amplitude of the transducer welding head, the added pressure and the welding time. The welding time and the welding head pressure can be adjusted, and the amplitude is determined by the transducer and the lug. There is an appropriate value for the interaction of these three quantities. When the energy exceeds the appropriate value, the melting amount of the plastic will be large and the welding material will be easily deformed. If the energy is small, it is not easy to weld firmly, the added pressure can not be too big. This preferred pressure is the product of the side length of the welded part with the preferred pressure per 1mm of the edge.

 

 

 

 

 

Laser welding machine:

 

 

 

Laser welding machine USES high energy laser pulse to heat the material in a small area, the laser radiation energy diffuses to the material through heat conduction, and the material is melted to form a specific melting pool. It is a new type of welding, laser welding mainly aims at the welding of thin wall materials, parts, which can realize welding, butt welding, welding stack, seal welding, etc., deep wide ratio is high, the weld width is small, small heat affected zone, small deformation, welding speed, welding seam smooth, beautiful, without processing or simply processing after welding, welding quality is high, no pores, can accurate control, focusing on small points of light, high positioning accuracy, easy to realize automation.

 

 

 

Folding welding characteristics

 

 

 

Belongs to melt welding, laser beam as energy, impact on the welded joint.

 

 

 

The laser beam can be guided by a flat optical element, such as a mirror, and then projected onto the weld by a reflective focusing element or lens.

 

 

 

Laser welding machine belongs to non-contact welding, the operation process does not need pressure, but the use of inert gas to prevent oxidation of the molten pool, metal filler is occasionally used.

 

 

 

Laser welding can be combined with MIG welding to form laser MIG composite welding, so as to achieve great penetration welding, and the heat input is greatly reduced compared with MIG welding.