In terms of its development, sewing machines are mainly concentrated in the application of electromechanical hydraulic-gas integration, the adoption of oil-free or micro-oil lubrication system, the application of direct-drive motor, the application of computer multi-program control mode, the design and application of personalized industrial modeling, etc., which push the development of sewing machines to the peak. For sewing machine manufacturers in Our country, there have been a number of automatic bag-opening machine, oil-free direct-drive sewing machine, double-needle corner comprehensive feeding sewing machine, single-needle side cutting flat sewing machine, electronic high-speed looping machine, small square-head series stretch sewing machine and so on, which have realized the new leap-over of sewing machine.

Sewing machine is an indispensable tool for sewing clothes. Different clothing fabrics have different sewing performance. The sewing performance of fabrics is not only related to the sewing machine and its mechanism, but also related to fabric performance, sewing thread, sewing needle and sewing process parameters (such as foot pressure, sewing thread tension, stitch density, feeding tooth height, etc.). For example, sewing needle is one of the main sewing machine parts. The shape of needle tip, needle rod and surface treatment technology of sewing needle have an absolute influence on the appearance of joints. Due to the direct contact between the needle and the fabric during the sewing process, if the needle is not used properly, the following problems will occur: jumper, broken thread, seam wrinkling, drawing, thick needle eye and high-speed friction will cause the needle body to heat, leading to the phenomenon of fuse suture and yarn. It is very important to have a comprehensive understanding of the shape, specification, material, hardness, elasticity and use of sewing machine needles. It is very important to select needles scientifically and rationally according to different clothing styles, different fabrics and different sewing parts.

Currently, sewing processing with high speed sewing machine, speed of 5000 r/min, the speed of the needle penetration fabrics can be up to 4 m/s, in the process of such a high speed sewing, needle and sew friction can cause machine beard needle temperature is too high, serious will be formed in chemical fiber fabric or cause chemical fiber stitching molten melt hole, pinhole lead wire resistance increase, make the line cyclization conditions deteriorate caused jump needle or break.

High speed through the fabric in the process of sewing stitches may at any time to cut off the fabric of the yarn fabric caused by mechanical damage, severe mechanical damage will cause the loss of fabrics and the strength of the seam, affect the appearance of the clothing and durability, in general, fabric density, structure tight fabric, and strengthen the twist fabric mechanical damage problems stand out in the sewing, and short fiber yarn fabric sewing damage is more slight.

In recent years, in order to adapt to the diversity of clothing fabric performance, especially the emergence of "new synthetic fiber" fabrics, the clothing industry has reformed the shape of needle pole and needle tip. For example, "Shengjia" u-shaped cross section needle made of flow extrusion technology, its needle rod strength is 90% higher than that of traditional circular cross section machine needle. "IT" series machine needle developed by Japan "organ" company can reduce vibration and play a very good role in preventing jumping needle. "Organ" company launched "NS" series machine needle, needle tip thin and long, aimed at solving the chemical fiber fabric easy to occur seam wrinkling and the problem of drawing. In order to solve the problem of heat damage of needle, the method of direct blowing of needle, changing the shape of needle tip and making streamline groove on needle rod was adopted. The surface of the needle is specially treated so that it will not stick to the needle even if it melts. Grotz, which has experience with 150-year needles, offers chrome-plated needles as well as titanium-nitrogen and nickel teflon needles to diversify clothing fabrics.

The development of sewing machine lies in intelligent sewing. Now both at home and abroad are concentrating their efforts on the development of stitchability integrated environment system. The stitchability Integrated environment system consists of three interconnected on-line systems, namely, the stitch prediction System, the intelligent sewing system and the safety quality system. The purpose of the system is to standardize product quality, improve production efficiency and reduce the skill requirements of operators by eliminating sewing problems caused by clothing fabrics.

Can sew sexual integration environment system according to the fabric under low stress mechanical properties (tensile shear properties, bending properties, thickness and compression performance), and through the sensor and drive set sewing parameters, predict the fabric sewing damage and seam wrinkle severity and puts forward reasonable Suggestions for textile finishing, the fabric to adapt to the high quality sewing.

In the intelligent sewing system, sewing machines can automatically set sewing parameters through sensors and drivers to optimize sewing quality and improve production efficiency, and reduce the skill requirements of operators. At present, the sewing machine is also equipped with sewing damage system and laser seam wrinkling system. Sewing damage system measuring machine needle penetration to detect sewing process damage; The laser detection seam wrinkling system measures the wrinkling deformation along the sewing line to ensure the quality of the sewing thread. When these parameters meet the requirements, the artificial intelligence technology will complete the optimized setting of sewing parameters, including presser foot pressure, sewing thread tension, stitch density and sewing thread number. This is the future of sewing machines.