Hot melt adhesive dispensing valve

The invention discloses a hot melt adhesive dispensing valve, and belongs to the technical field of mechanical equipment. According to the hot melt adhesive dispensing valve, an adhesive cylinder is arranged on the outer side of a valve body, and a copper pipe at the center inside the adhesive cylinder and heat conduction fins extending to the periphery on the outer side surface of the copper pipeare used for heat transfer, so that the heating area of adhesive in the adhesive cylinder is increased, the adhesive is heated more uniformly, and the frequency of blockage caused by the uneven heating of fluid is reduced; a heating rod in the copper pipe preheats the adhesive at low and medium temperatures, an adhesive storage cavity, away from the adhesive cylinder, in the valve body is a high-temperature heating area, and the interference between the heating rod and the high-temperature heating area is avoided; and a spring seat is moved downwards to compress a spring by rotating a threaded rod, so that the compre