Assembling technology for metal cover board and cavity component of cavity filter

Abstract

The invention discloses an assembling technology for a metal cover board and a cavity component of a cavity filter. The assembling technology comprises the following steps: (1) printing of a solder paste, namely locating the metal cover board on a printing machine to print the solder paste; (2) assembling of the cover board, assembling tuning screws and tuning nuts into the metal cover bard according to the requirements; (3) assembling of devices, namely tightly assembling the metal cover board and the cavity component; and (4) melting and welding, feeding the clamped metal cover board and cavity component into a reflow oven for heating and welding, taking out the metal cover board and the cavity component for cooling, and disassembling the bolts or a compression tooling of fixing the metal board and the cavity component. An original bolt fastening method is replaced with a solder paste welding method, so that signal leakage is effectively avoided; the electrical properties and the stability of the devices are ensured; the processing time and the assembly work hours of the metal cover board and a cavity are shortened; the technology is simple; meanwhile, an original product ageing procedure can be simplified; the production efficiency is improved; the weight of the devices is reduced; and the market competitiveness of a product is improved.

Description

technical field [0001] The invention relates to a processing technology of a cavity filter, in particular to an assembly process of a cavity filter metal cover plate and a cavity component. Background technique [0002] With the rapid development of communication technology, the electrical performance and stability of communication devices are becoming more and more important. Communication devices including cavity filters, combiners and couplers need to fix the metal cover on the cavity , to form a sealed inner cavity to avoid signal leakage between different single cavities in the cavity and cause abnormal electrical performance of the device. [0003] Currently, metal cover plates and cavity components of communication devices are usually fixed by means of screw fastening. However, the fixing method of screw fastening requires the use of a large number of screws, resulting in many holes in the metal cover and cavity, which greatly prolongs the processing time and increas...

AI Technical Summary

Problems solved by technology

However, the fixing method of screw fastening requires the use of a large number of screws, resulting in many holes in the metal cover and cavity, which greatly prolongs the processing time and increases the subsequent assembly man-hours of the device; on the other hand, screw fastening or multiple At least there will be cases where the metal cover plate and the cavity components are not tightly sealed, resulting in signal leakage between the single cavities in the device, which will eventually lead to a decrease in the electrical performance and stability of the device, which is not conducive to the promotion and use of the product

Images