Auxiliary welding device of circuit board

Abstract

The invention discloses an auxiliary welding device for a circuit board, which comprises a circuit board, a protective plate is arranged at the lower end of the circuit board, and a diversion groove matched with pins is arranged on the protective plate, and a protective plate is installed at the upper end of the protective plate. Connecting device, and the circuit board is clamped by the connecting device and the protective plate, the upper end of the connecting device is screwed with a fixing seat, and the device can use the protective plate below to isolate the part that does not need to be welded at the lower end of the circuit board, so that It is difficult for the solder liquid to form a solder bridge, and the shape of the diversion groove is designed reasonably, which can ensure that the wave crest of the wave soldering can wash away the parts that need to be welded and solder correctly. It can be correctly fixed on the fixing plate, and because the specific shape of the protection plate can better adapt to the circuit board, it has high practical value.

Description

Technical field [0001] The invention relates to the technical field of auxiliary welding equipment for circuit boards, in particular to an auxiliary welding device for circuit boards. Background technique [0002] The circuit board is an important part of modern electronic instruments. The processing quality of the circuit board will directly affect whether the electronic instrument can work normally. The existing circuit boards mainly use manual welding or mechanical welding. The manual welding is inefficient and the welding process Harmful gases produced in the process are harmful to human health. The use of robotic arm spot welding is costly and not suitable for mass production. Therefore, the existing circuit board welding mainly uses wave soldering to deal with circuit boards with more solder joints and large batches. produce. [0003] During wave soldering, special equipment is used to form a higher wave crest in the molten solder liquid, and then the side of the circuit boa...

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Problems solved by technology

[0002] The circuit board is an important part of modern electronic equipment. The processing quality of the circuit board will directly affect whether the electronic equipment can work normally. The existing circuit boards mainly use manual welding or mechanical welding, and the efficiency of manual welding is low. The harmful gas produced in the process is harmful to human health, and the cost of using mechanical arm spot welding is high, and it is not suitable for large-scale production. Therefore, the existing circuit board welding mainly uses wave soldering to deal with circuit boards with many solder joints and large batches. Production

[0003] When wave soldering works, special equipment is used to form a higher wave peak of the molten solder liquid, and then the side of the circuit board to be soldered passes through the wave peak obliquely. The direction of liquid flow in the wave peak is opposite to the direction of movement of the circuit board. Welding, and can effectively wash the welding part to ensure the quality of welding, but when using this method to weld, because the circuit board moves obliquely, when the welding holes are too dense, it is easy to make the solder liquid on the circuit board along the circuit board The reverse elongation of the direction of movement makes the solder bridge between the solder joints form a solder bridge. The existence of the solder bridge destroys the connection structure of the original circuit on the circuit board, so that the circuit board cannot work normally, so wave soldering is difficult to apply Due to the circuit board with too dense soldering pins, this also leads to the inability to effectively shorten the pin spacing between existing circuit boards. Components that require dense soldering can only be directly made into a separate integrated circuit, which is not conducive to the diversity of circuit boards If we can invent a new type of device that can provide auxiliary protection during wave soldering and prevent the formation of solder bridges between solder joints, it can effectively improve the soldering performance of wave soldering on circuit boards. For this reason, we provide a circuit Auxiliary welding device for board

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