Glue transport mechanism for a molten glue discharging device

Claim 1

An electric glue gun, including: a housing; A glue stick guide tube having front and rear ends disposed in said housing for receiving a glue stick therein, said glue stick guide tube incorporating an upper notch and a lower notch opening thereinto; an electric heating element externally mounted on said glue stick guide tube adjacent the front end thereof; a servo-motor mounted in said housing and including a rotary driven gear, said gear projecting through said upper notch of said glue stick guide tube to drive a glue stick disposed therein and to move said glue stick forward in said guide tube for melting by said electric heating element; a pressure wheel set mounted for up and down shifting within said housing and including an upper end from which a pressure wheel is journalled projecting into said lower notch and a lower end, a trigger shiftably mounted from said housing for movement between on and off positions, said trigger and said lower end including co-acting means for upwardly displacing said pressure wheel set relative to said housing responsive to movement of said trigger toward said on position; a motor controlling switch mounted in said housing for controlling operation of said servo-motor; and an operator shiftably supported from said housing and operatively associated with said trigger and motor controlling switch for closing the latter responsive to shifting of said trigger to said on position.