Automatic tin adding electric soldering iron

Abstract

The invention discloses an automatic tin adding electric soldering iron which comprises a transmission module and a heating module. The transmission module comprises a shell, an inner cavity, an inner ceramic cavity, a pushing body and a wire adding button, wherein the upper end of the inner ceramic cavity is sleeved with the pushing body. A pair of one-way rotation circular gears are arranged at the joint of the inner cavity and the inner ceramic cavity. The side faces of the circular gears are provided with meshed straight gears. The lower ends of the straight gears are hinged to the upper end of the pushing body. A spring is arranged at the lower end of the pushing body. One side of the pushing body is in a conical shape with the large top and the small bottom. The wire adding button is hinged to the shell. The wire adding button can just press the conical side of the pushing body when rotating so that the pushing body is made to move upwards. The heating module comprises a heating body with the lower sharp nozzle type end, a conductor winding wire, a heating wire and a control circuit board, the upper end of the heating body is connected with the shell, the conductor winding wire is arranged at the lower portion of the inner ceramic cavity, and the lower portion of the inner ceramic cavity stretches into the heating body till the tip nozzle position, a user can operate the automatic tin adding electric soldering iron with one hand, tin wires are molten during welding, and no dead tin is generated.

Description

Technical field [0001] The invention belongs to the field of electronic technology, and relates to an electric soldering iron, specifically, an automatic soldering iron. Background technique [0002] Traditional electric soldering irons are divided into internal heating type and external heating type according to the heating method. It uses heat conduction to heat the front soldering iron, and then melts the tin wire to achieve the purpose of welding. However, holding the tin in one hand and the electric soldering iron in the other hand makes it difficult to grasp the position of the components on the soldering board, especially the SMD components. On the other hand, it is not well adapted to the situation of mass manual welding. [0003] Since the melting point of the commonly used solder wire is about 200 degrees Celsius, and the solder wire is generally added with flux, the flux will increase the fluidity of the solder, but the flux will sublime when the solder is around 100 d...

AI Technical Summary

Problems solved by technology

Therefore, the design of the heating device is a difficult point. The patent application document CN104526101A discloses a touch-pressure automatic tin-supply soldering iron. It is pointed out that because the solder is in liquid state for a long time, all the flux in the tin wire will be sublimated. The result is that the liquid tin has no fluidity and is difficult to be sprayed on the components. Even if it can be sprayed, it has no fluidity. So poor practicality

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