The glue machine mainly includes a compressed air source, a main compressed air pipeline, a compressed air pipeline, a glue gun and a timing controller.
The main compressed air pipeline is successively provided with a pressure regulator, a pressure gauge and a three-way valve, and one end is connected with the compressed air source, and the other end is connected with a hose.
The secondary compressed air pipeline connected with the compressed air source is successively provided with a regulating valve and a diverging pipe, and is communicated with the atmosphere, so that the pressure in the diverging pipe is negative pressure.
In addition, the piston glue gun is pushed by the air pressure and the precise control of the timing controller, so that the adhesive is extruded from the needle, and the negative pressure has a suction effect on the adhesive, so that the glue gun will not have residual drops.