Airflow-stabilizing air knife of high-speed tin coating machine

Abstract

The invention relates to an airflow-stabilizing air knife of a high-speed tin coating machine. The airflow-stabilizing air knife mainly comprises a knife body base, air knife connection boards, air knife main boards, air knife cover boards and the like. Two air knife modules are installed on the knife body base by a certain angle; when the air knife device works, high pressure air is input from air inlet connectors of the knife body base, passes through an air path of an inner cavity of the knife body base, is output to connection board air guide grooves through air passing holes of the knife body base, then is output into air passing round holes of the air knife main boards through the connection board air guide grooves and is output from air knife edges through curve air guide grooves of the air knife main boards, so that air curtain walls with a certain angle and uniform and stable airflow are formed; and a copper wire soaked with molten tin moves in the crossed center direction of the air curtain walls along the center symmetry line of the two air knife modules, and the molten tin forms a thin tin coating uniform in thickness on the surface of a copper strip under the action of the air knife.

Description

technical field [0001] The invention relates to an air blowing type drying device, in particular to an air knife for blowing and covering molten tin on the surface of a welding strip during the tin coating process of the welding strip. technical background [0002] Tin-coated copper ribbon is a key material in the manufacture of photovoltaic industry equipment. The quality of the ribbon is directly related to the superior performance of photovoltaic equipment components, especially related to the energy utilization efficiency of photovoltaic equipment and the service life of equipment. The production process of welding strip generally includes processes such as rolling, annealing, and tin coating of raw copper strips, among which tin coating is an important process. The general working process of tin coating is to soak the rolled and annealed copper strip in the molten tin pool, draw it out after a period of time, and use an air knife to blow off the uneven liquid tin drople...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to propose an air knife with a new structure for the above-mentioned problems such as uneven wind speed at the air outlet of the drying air knife, poor stability effect, and excessive wind resistance of the air knife. The wind speed, stability and uniformity of the flow field generated by the air outlet can achieve better results, and the resistance of the air knife is reduced under the same air outlet air pressure

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