A welding flux automatic adding system

Abstract

The invention provides an automatic adding system for soldering flux of a welding machine. The automatic adding system comprises a soldering flux barrel and a storage barrel, wherein a liquid feeding opening of the soldering flux barrel is connected with a discharging opening of the storage barrel through a pipe and is provided with a liquid feeding pipe; the liquid feeding pipe is provided with a liquid feeding switch valve; a liquid draining opening is provided with a liquid draining pipe; the liquid draining pipe is provided with a liquid draining switch valve; an upper liquid-level sensor and a lower liquid-level sensor are arranged in the soldering flux barrel, and are connected with a PLC (programmable logic controller) unit; a discharging pipe is arranged at the discharging opening of the storage barrel; the discharging pipe of the storage barrel is connected with the liquid feeding pipe of the soldering flux barrel, and is provided with a discharging switch valve; the storage barrel is provided with a discharging compression pipe which is connected with compressed air; and the discharging compression pipe is provided with a discharging compression switch valve. The automatic adding system can be automatically controlled, and is convenient to expand; when automatic adding systems are produced in batches, a set of equipment can control a plurality of machines, so that the cost can be saved when in batch production; and the soldering flux can be added automatically, the adding precision is high, and the time and the labor can be saved.

Description

technical field [0001] The invention relates to an automatic flux adding system for a welding machine, which belongs to the technical field of welding. Background technique [0002] In the production process of solar modules, the automatic welding machine uses the ribbon to weld the battery sheets into a string, and the tin layer on the surface of the ribbon needs to be melted at 231.86°C. This kind of automatic welding machine uses hot air to heat the ribbon during the welding process. The purpose of tin is that the temperature of the hot air far exceeds the melting point of tin. After the battery sheet and the ribbon are welded together, due to the large difference in the thermal expansion coefficients of the two substances, the battery sheet is easy to form invisible cracks, which are difficult to find and have a great impact on the quality of the components. In order to reduce the welding temperature and improve the welding quality, we apply On to the flux. [0003] Ho...

AI Technical Summary

Problems solved by technology

[0005] 1. In the process of adding flux to the device, the maximum flow rate of the liquid is completely controlled by the liquid level difference. If you want to increase the adding speed, you need to put the flux holding barrel very high, and there is no venting device in the barrel , when the liquid drops to a certain height, the pressure inside and outside the flux holding barrel will reach equilibrium, making it impossible to continue adding liquid

[0006] 2. Although the cost is low, a large number of duplications will be required if the addition and addition system that satisfies the normal addition of liquids for multiple devices will increase the corresponding cost and the processing time will be longer

[0007] 3. The adding process needs to be controlled manually, which not only wastes manpower, but also cannot meet the standardization of adding accuracy, and cannot realize automation in operation

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