The automatic cap sealing machine is mainly used forsealing and welding of optical device shell.It is suitable for massproduction of various cap welding processes such as spherical oraspheric lens to38, TO46,to56, EML and so on. The equipmentis mainly composed of seal welding module, automatic loadingand unloadingmodule, vacuum drying module, automatic controlmodule and data acquisition module. The equipment has theadvantages of smallfloor area, compact structure, low gasconsumption, miniaturization and lightweight; The first three clawpositioning air clamp has the characteristics of stable productpositioning and strong compatibility; The servo press system andvisual alignment system are buit independently, which can realizethe high-precision closed-loop control of pressure and high-precision identification of chip. It has the characteristics of highspeed, high efficiency and high quality.