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 a fixing member 2. The fixing member 2 is connected to one end of a linkage arm 4 through a linkage shaft 3, and the other end of the linkage arm 4 is axially fixed to connect the knife Rod 5; the piston rod of the oil cylinder 1 can drive the knife bar 5 to rotate; one end of the knife bar 5 is fixed with a movable blade 6, and one side of the movable blade 6 is fixed with a static blade 7; when the knife bar 5 rotates, it can drive the movable blade 6 Rotates relative to the static blade 7, so as to contact the static blade 7 to form a cutting force;
[0027] The knife bar 5 is provided with an annular groove 14 in which a C-shaped baffle 11 is inserted into the ring. The C-shaped baffle 11 is connected to one end of the spring 12, and the other end of the spring 12 abuts against the open...
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