What is a synchronous car

Synchronous car is also called synchronous sewing machine, it has three synchronous and two synchronous. The three-synchronous sewing machine is also called a combined feeding sewing machine, and it can also be called a DU car. It is fed by the presser foot (small presser foot), the cloth feed dog and the needle at the same time. It has a large presser foot and a small presser foot. Generally, the large presser foot does not move when feeding materials, and the small presser foot randomly stitches, and the cloth feed dog feeds together. Second synchronous sewing machine, which can also be called a DY car. It is composed of a presser foot (large presser foot) ), the cloth feed dog feeds at the same time, the difference between it and the three-synchronization is that its needle moves up and down, without feeding with the presser foot and cloth feed dog, and the up and down movement of the needle is also called up and down composite feeding.


When the sewing machine is working, the three-synchronous sewing machine is more capable of eating thick than the two-synchronous machine. The three-synchronous machine is more used in the sewing of heavy materials, and the two-synchronous machine is mostly used for thin and medium-heavy materials. Therefore, the three-synchronous sewing machine can also be called a heavy material sewing machine. . The sewing speed of three-synchronization is different from that of two-synchronization. The sewing speed of three-synchronization is faster than that of two-synchronization. The sewn fabric is smoother and the stitches are also beautiful. Therefore, three-synchronization is more popular than two-synchronization. But the price of the three-synchronous sewing machine will be relatively high.


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