Air knife drying device for PCB manufacturing

Abstract

The invention relates to the technical field of high-end equipment manufacturing, and discloses an air knife drying device for PCB manufacturing. The air knife drying device comprises a shell, whereinan air inlet pipe is connected to a bottom wall of the lower end of the shell in a penetrating manner; a fan is arranged at the lower end of the air inlet pipe; a channel is formed in the middle of the shell; two conducting strips are fixedly connected to two sides of the channel on the inner wall of the shell; and nozzles are arranged at two sides of each conducting strip. Through a pendulum model arranged on a conveying mechanism, the deflection amplitude of a circuit board is automatically adjusted in the downward moving process, and scratching is reduced, so that the effect of automatically adjusting the deflection angle is achieved, and the problem of scratching of the circuit board caused by staggered arrangement of the nozzles in the prior art is solved; meanwhile, by increasing current of an electromagnet, the adverse bending moment generated by uneven wind power distribution of blow nozzles is balanced through magnetic compensation, and the synchronous bending moment is linearly increased progressively through the magnetic compensation, so that the effect that the buffer bending moment of the circuit board is increased in the downward moving process is achieved, and the problem that the circuit board is snapped due to too large bending moment in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of high-end equipment manufacturing, in particular to an air knife drying device for PCB manufacturing. Background technique [0002] PCB is a printed circuit board, referred to as a printed board, and is one of the important components of the electronics industry. Almost every kind of electronic equipment, ranging from electronic watches and calculators to computers, communication electronic equipment, and military weapon systems, as long as there are electronic components such as integrated circuits, must use printed boards. Various processes are required in the PCB preparation process. Processing, such as spraying, etching, air-drying, etc., requires the finished circuit board to be placed in a drying device during the air-drying process, so the requirements for the device are becoming more and more stringent. [0003] Most of the existing air-drying process is to pass the circuit board into the drying d...

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Problems solved by technology

[0004] In view of the deficiencies in the use of the existing drying device proposed in the background technology, the present invention provides an air knife drying device for PCB manufacturing, which can automatically adjust the swing angle to avoid scratching the circuit board and reduce the bending moment to prevent the circuit board from breaking Advantages, solve the technical problems raised in the above-mentioned background technology

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