Single-side double-needle double-thread sewing device and process thereof

The invention provides a single-side double-needle double-thread sewing device and technology, and belongs to the technical field of single-side sewing devices.The single-side double-needle double-thread sewing device comprises a rack, a swing insertion mechanism, a presser foot mechanism, a thread guiding mechanism and a synchronous belt transmission mechanism, the swing insertion mechanism is installed on a side plate of the rack, and power is transmitted by a servo motor and the synchronous belt transmission mechanism; the synchronous belt transmission mechanism ensures that two cranks of the swinging thorn inserting mechanism move synchronously; the presser foot mechanism is positioned at the lower part of the rack and can realize pre-tightening force on the preforms with different thicknesses; the thread guide mechanism guides the direction of the suture thread, the tension of the suture thread is ensured, and the stitch forming efficiency is improved; and variable-angle sewing is realized by replacing t