Trimming device of sewing machine
A sewing machine and power device technology, which is applied to sewing machine components, thread-cutting mechanisms in sewing machines, sewing equipment, etc., can solve the problems of reduced sewing efficiency, residual thread ends, affecting sewing quality, etc., to ensure sewing efficiency and smooth thread opening. Effect
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[0026] Such as figure 1 , figure 2 As shown, the sewing machine thread trimming device of the present invention includes an oil cylinder 1, the piston rod of the oil cylinder 1 is connected to the fixing member 2, the fixing member 2 is connected to one end of the linkage arm 4 through the linkage shaft 3, and the other end of the linkage arm 4 is fixedly connected to the knife along the axial direction. Rod 5; the piston rod of oil cylinder 1 can drive cutter bar 5 to rotate; One end of cutter bar 5 is fixedly provided with movable blade 6, and one side of movable blade 6 is fixedly provided with static blade 7; When cutter bar 5 rotates, can drive movable blade 6 rotates relative to the static blade 7, thereby contacting the static blade 7 to form a cutting force;
[0027] The cutter bar 5 is provided with an annular draw-in groove 14, and a C-shaped catch 11 is embedded in the annular draw-in groove 14. The C-shaped catch 11 is connected to one end of the spring 12, and t...
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