Intermediate frequency high-power components for resistance welding machines

Abstract

The invention discloses an intermediate-frequency and high-power component for a resistance welding machine. The intermediate-frequency and high-power component comprises an FRD (fast recovery diode) rectification module and an intermediate-frequency transformer, wherein the FRD diode part consists of two FRDs, a conductor and a pressing plate; the conductor is provided with a bottom surface, a top surface, and a left pressing vertical surface and a right pressing vertical surface which are positioned on the bottom surface, and a middle vertical surface; a cooling water channel is formed in the conductor; the two FRDs are positioned between the middle vertical surface of the conductor and the left pressing vertical surface on one side of the middle vertical surface and between the middle vertical surface of the conductor and the right pressing vertical surface on the other side of the middle vertical surface; the pressing plate elastically presses negative electrodes of the FRDs on the middle vertical surface; the electrodes are connected with secondary coils through copper pins and are welded together through welding fluxes; insulating spray-coating layers are arranged on the surfaces of the secondary coils; primary coils are formed by resin solidification and coverage. The intermediate-frequency and high-power component is compact in structure, high in heat dissipation effect and convenient to mount, operate and replace, ensures that the FRDs of the rectification part is in good contact with the contact surface the conductor, and is more stable in working performance.

Description

technical field [0001] The invention relates to an intermediate frequency high-power assembly for a resistance welding machine. Background technique [0002] The intermediate frequency high-power component for resistance welding machine is composed of a rectifier diode part and an intermediate frequency transformer part, which has the following problems: 1. The rectifier part is composed of multiple parts and has non-detachable parts. The rectification part cannot be replaced quickly when the semiconductor device is damaged, which affects production efficiency; 2. Usually, FRD diodes are usually elastically crimped to ensure the contact between the FRD diode and the conductor and reduce the excess power consumption caused by contact resistance. Even so, the rectification part is due to large The output of the current still generates a lot of heat and needs to be cooled with coolant. However, the crimping of FRD diodes will cause unequal or excessive heat due to uneven press...

AI Technical Summary

Problems solved by technology

[0002] The intermediate frequency high-power component for resistance welding machine is composed of rectifier diode part and intermediate frequency transformer part, which has the following problems: 1. The rectifier part is composed of multiple parts, and there are non-detachable parts

The rectification part cannot be replaced quickly when the semiconductor device is damaged, which affects production efficiency; 2. Usually, FRD diodes are usually elastically crimped to ensure the contact between the FRD diode and the conductor and reduce the excess power consumption caused by contact resistance. Even so, the rectification part is due to large The output of the current still generates a lot of heat and needs to be cooled with coolant

However, FRD diode crimping will cause unequal or excessive heat due to uneven pressure, resulting in device damage

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