The utility model relates to embroidery
machine technical field, specifically discloses a kind of belt
pulley tensioner of embroidery frame of embroidery
machine, including base, recess is set in the top of base, and tensioning
assembly is arranged on base, and tensioning
assembly includes screw rod, and the inner cavity of recess is sleeved in screw rod, and one end of screw rod is provided with turntable, and the surface of screw rod is connected with screw sleeve with
screw thread, the surface of screw sleeve is connected with screw sleeve, the top of screw sleeve is fixedly connected with recessed plate, and the inner cavity of recessed plate is rotatably connected with belt
pulley, and the both ends of recessed plate bottom are equipped with guide block. Tensioning adjustment is realized by the thread cooperation of screw rod and screw sleeve, and the sliding limiting structure of guide block and guide groove is combined, so that adjustment can be quickly completed without the aid of external tools, and the position of turntable is locked by the cooperation of clamping rod and clamping hole in positioning
assembly, effectively prevent the change of tensioning degree due to vibration or long-term use, with the advantages of convenient operation, high adjustment efficiency and good tensioning stability.