Artificial lawn is made of PA, PP, and PE material pulled into the grass, grass, and PP mesh cloth, through the tufting machine sewn together and become. Artificial turf can be used in runways, soccer fields, tennis courts, baseball fields, hockey fields, gateball courts, golf courses, basketball courts, volleyball courts, badminton courts softball fields, and other sports venues, artificial lawn plays a role in greening. The tufting machine is the main equipment to produce artificial turf, The tufting machine through the tufting needle up and down reciprocating movement of the grass silk high-speed sewing in the base cloth, The tufting machine principle and sewing machine working principle are similar.

The down hooking mechanism is set below the needle plate, and the down hooking mechanism includes a down hooking knife, a knife seat, and a power device for driving the movement of the knife seat, said down hooking knife is mounted and fixed on the knife seat, said down hooking knife includes a knife beam, said knife beam has a vertical section and a transversal section, the upper end of the vertical section extends backwardly by bending to form a barbed portion, the lower end of the vertical section connects with the front end of the transversal section, the back end of the transversal section is connected to the oblique upwardly extending smooth section, the smooth section is connected to the tail of the insertion that extends backwardly by bending and the insertion of the tail is inserted and fixed on the knife seat.