Tubular pore plate anti-drip filling injection head assembly

The invention relates to the technical field of liquid filling equipment, and in particular relates to a tubular pore plate anti-drip filling injection head assembly. According to the technical scheme, the tubular pore plate anti-drip filling injection head assembly consists of a connecting piece (4), a pore plate (1), thin-walled tubes (2) and protection rings (3), wherein the connecting piece (4) is cylindrical, and the upper part of the connecting piece (4) is connected with a filling head; the pore plate (1) is arranged inside the lower part of the connecting piece (4); the diameter of each thin-walled tube (2) is smaller than that of a corresponding pore of the pore plate (1), and the length of each thin-walled tubes (2) is greater than the thickness of the pore plate (1); each thin-walled tube (2) is fixedly arranged in the corresponding pore of the pore plate (1); the protection rings (3) are circular rings which are arranged outside the connecting piece (4) or below the connecting piece (4); and the bottoms of the protection rings (3) are flush with those of the thin-walled tubes (2). The tubular pore plate anti-drip filling injection head assembly has the technical effects that the contact area between the bottom surface of the pore plate and a coating is reduced by virtue of the thin-walled tubes (2) exposed out of the pore plate, and the convergence amount is decreased; and flowing of a liquid between two pores is eliminated, and convergence is avoided, so that the phenomenon of continuous drip is avoided.