A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material to interweave or sew one or more layers of sewing material.
The invention provides a needle swing feed mechanism of a sewing machine, relates to the technical field of sewing machines, and solves the problem of how to make the swing of a needle bar support more stable, including a needle bar swing shaft, a crank, and a needle bar swing frame assembly.
The needle bar swing frame assembly includes: a needle bar support and a shaft.
The crank is fixed on the front end of the needle bar swing shaft and is movably connected with the needle bar swing frame assembly.
The needle bar swing shaft can drive the needle bar swing frame assembly to swing back and forth around the turning shaft along the cloth feeding direction.
The needle bar support has a guide block, a needle bar swing frame guide plate is fixed inside the housing, and a through groove is opened on the needle bar swing frame guide plate.
The guide block extends into the through groove and abuts against the groove wall of the through groove.
The guide block can slide along the through groove when the needle bar swinging frame assembly swings, and the new type has the advantages of more stable swinging of the needle bar support and good straightness of the sewing stitches.
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