What kind of sewing machines do you have?

1975, Shengjia Company invented a computer-controlled multifunctional household sewing machine, which was gradually used in industrial sewing machines. In the early 1980s, there were more than 3,000 kinds of sewing machines in Germany, and about 600 kinds were commonly used in production. The types of sewing machines can be divided into household sewing machines, industrial sewing machines and service sewing machines. According to the driving mode, it can be divided into manual sewing machine, pedal sewing machine and electric sewing machine. According to sewing stitches, it can be divided into hand-imitating stitch, lock stitch, single-line chain stitch, double-line or multi-line chain stitch, single-line or multi-line chain stitch and multi-line chain stitch sewing machine. At first, household sewing machines were basically single-needle manual sewing machines, and then electric sewing machines were invented, which has always been the mainstream in the market. According to its mechanism and suture form, it can be roughly divided into JA type, JB type, JG type and JH type. The picture below shows a household sewing machine-JG household electronic multifunctional sewing machine. Industrial sewing machines Most industrial sewing machines belong to general sewing machines, including flat sewing machines, chain sewing machines, flat sewing machines and sewing machines. , and the sewing machine has the highest utilization rate. We mainly study industrial sewing machines here. In practical work, the names of sewing machines are mostly named after the number of stitches, needle shape and degree of automation, such as single-needle chain sewing machine, five-thread sewing machine, three-needle five-thread sewing machine and so on. According to the popularity of use, it is divided into three categories: general sewing machinery, special sewing machinery and special sewing machinery. Table 3-30 shows the types and uses of common sewing machines. Table 3-30 List of Common Sewing Machines Type of Sewing Machine Name, Performance Type and Usage General Sewing Machines 30 1 Lock Sewing Machines are usually divided into medium speed and high speed, and can be divided into many types according to speed, cloth feeding mode and degree of automation. It is the most basic sewing equipment in garment production and is used in almost all garment products. The main function of 500 series wrapping seam of winding machine is to cut off the edge of wrapping cloth and prevent it from falling off. The most commonly used are three-wire cladding, four-wire cladding (joint) and wireless cladding (flat cladding), in addition to single-wire cladding, double-wire cladding and six-wire cladding. The speed types are medium speed (≤3000rpm), high speed (≤5000~7000rpm) and ultra-high speed (≥7000rpm). Chain stitch sewing machine 100/400 series chain stitch is used for elastic sewing, which can be divided into single needle machine, multi-needle machine, three-needle machine, four-needle machine, six-needle machine, eight-needle machine and twelve-needle machine according to the number of straight stitches. Multi-needle chain not only has high efficiency, but also can achieve special effects with sewing accessories. The main functions of the 400 series sewing machine without decorative thread and the 600 series sewing machine with decorative thread are sewing, hemming, decoration and splicing. , mainly used for sewing knitwear that needs elastic stitches or prevents falling off. It can be named by appearance, number of stitches, number of stitches, purpose and number of stitches. For example, cylinder double stitch, flat triple stitch, triple stitch and six stitch, double stitch collar and triple stitch and five stitch (double-chain and double-sided decorative stitch) double stitch sewing machine 30 1+30 1 double-lock stitch mainly completes double slit sewing with equal spacing, and the mechanical form mainly includes single stitch. Conventional sewing machine 304 double-thread lock stitch is specially used for buttonhole sewing of thin materials, medium and thick materials, knitwear, chemical fiber and other fabrics. Generally, the knife system is operated after locking the hole. Automatic continuous keyhole can feed cloth automatically as required, realizing the operation of one person and multiple machines. Double-thread compound chain stitch 401+1kloc-0/+502 of round-head buttonhole sewing machine is used to sew buttonholes of medium-thick fabrics. The cutter system can be cut first and then stitched or stitched first and then cut as required. The buttonhole tail can be phoenix tail or open tail, and the round eye with open tail needs to be knotted and sealed. Lock stitch or chain stitch of sewing machine is used to sew buttons of various clothes (two eyes and four eyes). There are many kinds of accessories for sewing machines, such as handle buttons, snap buttons, air buttons, etc., which can be sewn with suitable button seats. The invention can realize the automation of button loading and feeding. Double-thread lock stitch of knotting machine is mainly used for strengthening special parts of clothing, such as coils, pockets, etc., and sewing special patterns. According to the number of stitches, there are 2 1, 28, 35, 42 stitches, etc. Single-thread chain stitch of edge-sliding machine is used for edge-sliding of hem, cuffs, trouser legs and other parts, also known as hidden sewing machine. Sewing with a curved needle, the penetration of the needle can be adjusted. The machine body generally adopts two forms: hanging pipe and flat plate. Special Sewing Machines The zigzag sewing machines 304 and 308, also called zigzag sewing machines or herringbone sewing machines, are used for zigzag sewing of bras and underwear with certain elastic stitches. A two-point sewing machine (304) and a three-point sewing machine (308) are usually used. The electronic zigzag sewing machine can set straight, 2-point, 3-point, 4-point, crescent-shaped and needle-shaped zigzag sewing on one sewing machine, which greatly improves the equipment activity rate. Tooth bending machine (crescent machine) 304/406/40 1 is suitable for various decorative seams such as knitted garments, underwear, handkerchiefs, dresses, children's wear, sportswear, pillowcases, etc. Parts with different specifications can be replaced, which is suitable for all kinds of serrated or double serrated trimming. There are two kinds of lock stitch or chain stitch of embroidery machine: needle bar swing and fabric movement. As a unique sewing variety, embroidery machinery has developed rapidly. Most of the 400 series stitches of decorative sewing machines are formed by adding "fancy needle bed traversing mechanism" on the basis of double-thread chain sewing machines, which are used for various decorative patterns. It can be divided into two types: trimming machine for decorating the edge of clothing and fancy line multi-row double-line chain stitch decorative machine. For example, shell decoration machine, compared with other machines, its sewing machine has developed slowly and has gone a long way in semi-automation and automation. After the 1980s, with the deepening of the application of electronic computers, clothing machinery also developed rapidly. In 1980s and 1990s, the labor cost of American clothing industry soared, and the demand for automatic sewing machines seemed to be increasing. Japanese sewing machine manufacturers began to focus on the research and development of sewing automation. They hope that the automatic sewing machine can let the operator put away the cloth, press the start button, and then the mechanical equipment can sew the cloth automatically. After sewing and trimming, the sewn products can be stacked in turn. Ideally, one operator can operate two or three devices; Each automatic sewing machine should be equipped with two sewing machines to automatically complete two processes. However, in the face of flexible textile materials, automatic sewing machines have two insurmountable problems: ① Many soft fabrics must be put into the needle drop point one by one by the operator to make the automatic sewing machine run normally. ② During sewing, the more soft fabrics overlap, the more difficult it is for the equipment to adjust automatically. There are many difficulties in fully realizing the automation of garment sewing. At present, the development of sewing machinery is developing towards electronic intelligence, functional combination and special sewing automation (pocket digging, automatic tape winding, etc.). ) and the dependence of unskilled workers (semi-automation).