To enhance the quality

the yield and the universal application of plastic door and window

an advanced hot-melt welding machine of three-position linear arrangement for plastic door and window is designed based on new principles.The overall program planning is put forward.The principle of locating and clamping and the operating principle of some key phases are researched.The design methods of some key mechanical components are expound.Finally

type selection calculation of cylinder and its pressure determination are introduced.Some crucial problems in the development process are solved

the automation and the reliability of the machine are enhanced.