The present invention discloses a sewing device for cloth diapers, comprising a frame, a sewing head mounted at one end of the top of the frame, a
drive motor for driving the sewing head mounted on a side wall of the frame, a driving shaft rotatably mounted on the side plate of the frame, one end of the driving shaft being connected to the output shaft of the driving motor, a needle post mounted on the sewing head, a needle connected to the bottom of the needle post, a pre-tightening mechanism mounted between the needle post and the sewing head, a fixed plate mounted at the other end of the frame, a material dragging mechanism mounted on the fixed plate, a second
transmission belt mounted between the material dragging mechanism and the driving shaft, a clamping mechanism mounted between the fixed plate, and a first
transmission belt connected between the clamping mechanism and the material dragging mechanism. A single
drive motor drives the needle post, the material dragging mechanism, and the clamping mechanism to work in a coordinated manner, achieving a perfect sewing process in which the
nursing pad remains stationary when the needle descends to penetrate the pad, and the pad advances a
short distance when the needle ascends to disengage the pad, and then the needle descends again to allow the pad to remain stationary again. Furthermore, the sewing process does not require manual operation, facilitating automated production.