Special device for soldering and sealing relay

Abstract

The invention provides a special device for soldering and sealing a relay. The special device comprises a soldering base, a connecting ring jacking tool, a jacking rod and a jacking tool pressing block. A static contact, an exhaust pipe and a binding post in a to-be-welded assembly are positioned through the soldering base, and a connecting ring is positioned through the connecting ring jacking tool, so that one-time positioning of a ceramic seat and a plurality of metal parts is realized. Through holes, lightening holes or lightening grooves are designed, so that the parts are evenly heated, solder is evenly spread, and one-time brazing forming of ceramic and the plurality of metal parts is achieved. Therefore, the purposes of simplifying the product structure and improving the production efficiency are achieved. The device is easy and convenient to disassemble and wide in application range.

Description

technical field [0001] The invention relates to a special device for relay brazing and sealing, belonging to the technical field of contactor / relay design. Background technique [0002] At present, traditional high-power contactors mostly adopt the method of ceramic package combined with laser welding package, and the contact part of the static contact and the moving contact are sealed in the sealed cavity. Among them, the static contact and the connecting ring are packaged with the ceramic seat by brazing, and then the connecting ring and the moving contact assembly are laser welded to form a sealed cavity. The exhaust pipe is usually connected to the ceramic base by laser welding or soldering, and the terminals of the electromagnetic coil are usually potted in plastic insulation. As a result, the product structure is more complicated, and the assembly cycle and cost are increased. [0003] If the exhaust pipe and the terminal are also connected to the ceramic seat by bra...

AI Technical Summary

Problems solved by technology

Due to the brazing of multiple metal parts such as the ceramic seat and the connecting ring, static contact, exhaust pipe, terminal post, etc., the ceramic seat needs to be designed as a special-shaped structure. It is difficult to ensure the positioning and heating uniformity between the parts, and the assembly accuracy is relatively high. Low

At the same time, the thermal expansion coefficients of the parts are different, so it is difficult to guarantee the uniformity of solder spreading, the sealing performance of the product and the welding strength.

In order to improve the assembly accuracy and ensure the stability of the assembly when it is picked up, it needs to be connected by screws, which makes it difficult to disassemble and clean the tooling

Therefore, for the brazing of similar special-shaped ceramic seats and multiple metal parts, two welding methods are usually used. First, the ceramic seat and some metal parts are brazed to form a temporary assembly, and then the temporary assembly and other metal parts are completed by secondary brazing. Welding of parts complicates the process and prolongs the production cycle

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