Vacuum brazing tool for water-cooling plate

Abstract

The invention discloses a vacuum brazing tool for a water-cooling plate. The vacuum brazing tool comprises a movable trolley, wherein a clamping device is arranged on the movable trolley and comprises a bottom board, a cover plate and at least one group of clamping device, wherein the bottom board and the cover plate are vertically superposed; and the vacuum brazing tool is characterized by further comprising a C-shaped main frame, wherein a suspension beam is arranged on the upper part of the C-shaped main frame, a vertical moving device which can move along the direction of the suspension beam is arranged on the lower side of the suspension beam, a pressing block is arranged on the bottom end of the vertical moving device, and at least one load sensor is arranged on the bottom of the pressing block. According to the tool, total press fitting force on the water-cooling plate can be accurately controlled, the press fitting force on each part of the water-cooling plate is basically consistent, and thus, the deformation of each clamp is slight and consistent, the service life of each clamp is prolonged, round hole structures of parts such as the bottom board and a pressing board are beneficial to the internal radiation heat adsorption and heat dissipation of a product in a vacuum brazing furnace, so that the brazing efficiency is improved, after the tool is adopted to weld the water-cooling plate, the once finished product rate can reach above 90%, and the tool can be widely applied to the assembling of the water-cooling plate before the vacuum brazing.

Description

technical field [0001] The invention relates to a vacuum brazing tool, in particular to a vacuum brazing tool for a water-cooled plate. Background technique [0002] At present, high-power power electronic components such as IGBT mainly use water-cooled plates to cool them down, while high-end water-cooled plates mainly use vacuum brazing method. The sealing performance of water-cooled plates is very important to the safety of power electronic components. It is mainly guaranteed by the tooling before brazing and the process method during brazing. At present, the water-cooled plate is mainly assembled by hand before brazing. If this method is used, the assembly quality is uncontrollable, the service life of the tooling fixture is low, and the brazing time of the product is long. , For example, the Chinese invention patent with the application publication number CN102489924A discloses a "a kind of vacuum brazing combined flexible fixture for the core body of an aluminum plate-...

AI Technical Summary

Problems solved by technology

[0002] At present, high-power power electronic components such as IGBT mainly use water-cooled plates to cool them down, while high-end water-cooled plates mainly use vacuum brazing method. The sealing performance of water-cooled plates is very important to the safety of power electronic components. It is mainly guaranteed by the tooling before brazing and the process method during brazing. At present, the water-cooled plate is mainly assembled by hand before brazing. If this method is used, the assembly quality is uncontrollable, the service life of the tooling fixture is low, and the brazing time of the product is long. , For example, the Chinese invention patent with the application publication number CN102489924A discloses a "a kind of vacuum brazing combined flexible fixture for the core of an aluminum plate-fin heat exchanger", which will cause uneven pressure on the product, and the product The yield is low. If this manual assembly method is used to weld the water-cooled plate, the one-time yield is less than 60%, and there are still defects such as low fixture life and long brazing time.

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