The spring in the glue gun mainly has the following functions:

Provide resilience: After pressing the trigger or operating part of the glue gun, the spring can provide the force to restore the original state, making the operating part reset automatically and preparing for the next operation.

Control the amount of glue dispensed: Through the elastic force of the spring, the speed and amount of glue extrusion can be adjusted and controlled to a certain extent, making the output of glue more uniform and stable.

Increase the feel and stability of the operation