Automatic protection device for avoid the overflow of tin

Abstract

The present invention discloses one automatic protector for tin furnace set to avoid tin overflow, which comprises one tin furnace with side wall to define one tin liquid holding space and one tin feeder. The automatic protector set on the side wall of the tin furnace includes one acceptor, one sensing device and one control circuit. The acceptor set outside the side wall is used for accept overflow tin liquid; the sensing device is set inside the acceptor; and the control circuit is connected electrically between the sensing device and the tin feeder. After the tin liquid level exceeds preset height, overflowed tin liquid is held inside the acceptor to start the control circuit for the tin feeder to stop feeding tin so as to avoid further tin overflow. The present invention has simple first and capacity of preventing fault caused by tin overflow.

Description

technical field [0001] The invention relates to an automatic protection device for preventing tin overflow, in particular, relates to an automatic protection device used on a tin furnace device, which can sense the tin overflow state of the tin furnace, thereby sending out a control signal to stop the supply of tin liquid. Background technique [0002] With the development of science and technology, electronic products have become an indispensable part of people's life. In these various electronic products, the circuit board is the core of its function, controlling the function and operation of electronic products. Take the printed circuit board (PCB) as an example. The printed circuit board contains many components and wires. The components can be fixed on the board by soldering, and the components and the wires are connected to make the original and the printed circuit board. The circuits are electrically connected to form a circuit loop. Among various welding methods, w...

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Problems solved by technology

[0003] However, in the current wave soldering technology, the tin furnace used in the production line usually does not have a protection device that can automatically disconnect the flat wave and bypass wave tin wave motors in the solder furnace device when the tin overflows.

When the tin furnace fixture is separated from the printed circuit board, the overflowed molten liquid tin will automatically flow under the welding equipment, melting the wiring of the control circuit, causing equipment failure, and stopping the production line; in addition, production technicians clean up the overflowing tin At this time, it is necessary to heat the tin block flowing under the welding equipment at a high temperature to remove it, and then reconnect the melted line, which takes a lot of time, resulting in a waste of production capacity and a loss of production in the factory

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