the shoemaking industry has a wide demand, which has also led to the shortage of shoemaking sewing machines, and the number of shoemaking manufacturers has sprung up like mushrooms. therefore, the number of manufacturers purchasing shoe-making models has increased accordingly. there are many kinds of common auto sewing machine shoes, such as double thread side sewing machine. it can be said that there are many brands in the market, and the quality is also uneven. therefore, when using this kind of equipment, people will find that there are often broken threads, broken needles, etc. what is the situation?
we know that people will rest when they are tired, and the machine is the same. reasonable use can effectively prolong the service life. problems such as thread breakage, skipped stitches, loose stitches, and broken stitches basically occur when the thread is not properly debugged in the early stage of use.
for example, the thread breakage problem is basically caused by the threading clip adjustment of the double-thread side sewing machine equipment being too tight and incorrect threading.
needle breakage, and the broken needle problem is because the pulling speed of the product is too fast, which leads to the pulling of the machine needle and the breakage of the machine needle.
the flower needle phenomenon is that when the shoes sewing machine sews the upper of the cloth fabric, we will find that two upper threads and the bottom thread

application of leather punching machine in manufacturing industry
in life, people cannot do without leather products. the most widely used are leather shoes, or car leather cushions. in the manufacturing process of these leather products, there will be a process, which is punching.
punching, in the traditional manufacturing process, the most primitive is the hand-held punch, which is knocked with a hammer. in this case, the speed is very slow. the most advanced is to use a laser marking machine to burn through the leather. however, there is a problem. using a laser will cause the leather to lose its luster, and it will also turn black and smelly, especially for light-colored leather such as white, which is prone to hair loss. black and can't be removed. in order to solve these many disadvantages, a leather punching machine has been developed, which uses automated equipment to punch leather.
cnc leather punching machine is suitable for punching processing of cattle and sheep leather, artificial leather, paper, shoe uppers, automotive accessories, etc. , the whole machine is made of welded steel structure, which is stable and rigid during high-speed operation. the transmission system mainly uses a servo motor to drive the ball screw. the main principle of the leather punching machine is mechanical stamping, which uses the crankshaft rotation radius to to achieve the mechanical reciprocating circular motion, forming the function of stamping.
the leather punching

design of highly automated industrial sewing machine electrical control system, industrial sewing machine embedded controller and stepper motor control drive module, using digital signal processor (dsp), and on the basis of analyzing the dynamic characteristics of the motor, the motor speed-up and down curve is given the realization method realizes the linkage of three-axis motors at high speed and the precise sewing of various customized patterns, and carries out sewing machine embroidery designs.
advanced mechatronic computerized canvas sewing machine, pattern sewing machine can automatically carry out the set sewing work after detection and feedback according to the change of conditions in the sewing process, realize laser or infrared clothing piece positioning, automatic edge sewing, thick and thin sewing automatic adjustment of suture thread tension, automatic speed change, automatic torque change, automatic needle replenishment, man-machine dialogue user programming, real-time tracking of sewing process, etc.; it can also complete several mechanical sewing machines on one mechatronic sewing machine. completed work; it can save many parts that originally need to be controlled by mechanical mechanisms in a computer-controlled environment; the degree of automation is constantly innovating, which can greatly reduce worker operations.
the electric control system is the key part of the electric control device of every computerized canvas sewing machine. it

electric sewing machine is the perfect combination of traditional sewing machine and modern intelligent electronic technology. it is an essential sewing tool for modern housewives and garment sewing equipment for modern garment enterprises. it can help people complete sewing work efficiently and safely. electric sewing machines are intelligent, lightweight, easy to operate, and safe. with the continuous development of industrialization, the current price of electric sewing machines is also declining. electric sewing machines are the best alternative to traditional bulky conventional sewing machines.
features
1. straight line sewing (double thread) - with bottom line design, the sewing is more firm;
2. curve sewing (can be used for double-thread seaming) -- see the figure for the shape, and you can easily complete the simple cloth seaming work at home, no need to find a tailor shop. (note: some buyers have reported that the shape of this seam seam is different from that of ready-made garments on the market. this is because the seam seam that is usually seen is processed by a special three-thread or four-thread seam seam machine, while the products in our store are double thread. although the shape is different, it can also achieve the purpose of sewing the fabric without losing its shape. using simple double-thread seaming eliminates the trouble of using a special seaming machine for more than three threads, and reduces the manufacturing cost of the product itself.

there are two major difficulties in the computerized automatic sewing machine: first, the operation of picking up slippery and soft knitted fabrics piece by piece and placing them on the needle drop point; the method requires high technology and high cost.the semi-automatic sewing machine improves the above two difficulties of the automatic electric sewing machine. with the help of the operator's auxiliary operation, the placement of the sewing material is completed, and the most important thing is that the production cost can be greatly reduced.
due to its high technical content and complex control system, automatic and semi-automatic sewing machines require a large investment in research and development, and relatively high prices. mass production also depends on the cooperation of the social electronics industry and the provision of suitable components. in addition, there is a lack of technical talents engaged in mechatronics in the industry, especially those who are familiar with both sewing machine technology and microelectronics technology. these have become unfavorable factors for the development of automatic and semi-automatic sewing machine projects.
however, from the perspective of cost performance, automatic and semi-automatic sewing machines have been gradually recognized by the market due to their inherent advantages such as multiple functions, good performance, and high production efficiency. there is no doubt that automation and semi-automation sewing m

compared with ordinary sewing machines, the advantages of semi-automatic and fully automatic sewing machines are that they can perform some functions that cannot be accomplished by ordinary sewing machines. for example: automatic needle stop position, automatic stitching technology, automatic reinforcement sewing, automatic embroidery, automatic color-changing thread, slow start, mirror image transformation, pattern scaling, pattern rotation, additional seam starting origin, function display and other functions.
high degree of automation and intelligencesemi-automatic and fully automatic sewing machines can automatically perform the set sewing work after detection and feedback according to changes in conditions during the sewing process. such as: laser or infrared garment piece positioning, automatic edge sewing, automatic adjustment of suture tension for thick and thin sewing materials, automatic speed change, automatic torque change, automatic thread trimming, automatic needle mending, automatic presser foot lifting, man-machine dialogue user programming, sewing process tracking, etc.
expanded application range of sewing machinesautomatic and semi-automatic sewing machines can simplify the work that is difficult to complete with ordinary sewing machines, and can use one machine to complete multiple processes.
reduce the application of mechanical partssince the semi-automatic and full-automatic sewing machines are controlled by computers, all the movements that n

from the perspective of the development history of sewing machines, people have always hoped to invent powerful sewing machines to replace ordinary sewing machines, free people from heavy labor, and solve the actual contradiction of labor shortage; from the development trend of sewing machines, there are two types of sewing machines: there are two trends: one is fully automated sewing equipment, and the other is semi-automatic sewing equipment; from the perspective of actual use, fully automatic sewing machines are not as advantageous as semi-automatic sewing machines in the fierce market competition; from a theoretical point of view, sewing machines the higher the degree of automation of the equipment and the easier the operation, the more popular it should be.

but the result given by the reality is: the demand for garment industry is ever-changing. not only is the cost of fully automatic sewing machines too high, but its scope of application is often limited by the garment process, and its advantages cannot be brought to the extreme. so some people will utilize other sewing tools and equipment.
on the other hand, semi-automatic sewing machines have strong adaptability to garment technology, and the cost is relatively low, within the range that users can afford. therefore, they have been widely welcomed by customers such as garment enterprises in recent years.
features of automatic sewing machineas we all know, the sewing machine can automatically complete t

a sewing machine generally consists of a machine head, a platen (base) and a frame. when sewing, the stitches are formed by 4 mechanisms in the machine head: firstly, the stitching mechanism penetrates the sewing needle into the sewing material; secondly, the hooking mechanism hooks the sewing thread on the needle under the sewing material make it self-connected, or interweave or interconnect with the shuttle thread below; then the thread take-up mechanism tightens the thread; finally, the feeding mechanism pushes the sewing material a certain distance to complete the stitch formation process. the actions of these four mechanisms are closely coordinated. therefore, the sewing machine is a semi-automatic precision machine.
quality requirements and testingthe sewing machine is first required to be able to sew smoothly during use. when sewing within the range of the specified speed, stitch length and the thickest sewing material, there will be no thread breakage, needle breakage, seam leakage, stitches that are not tight and seam seams. crepe and other faults can still be sewed smoothly when suddenly jumping from the thinnest sewing material specified to the thickest sewing material; secondly, under the specified sewing length, the linearity of the seam, the slippage between the upper and lower layers of sewing material, the consistency of the stitch length does not exceed the specified index, and each mechanism should have the specified performance; the third is to specify

according to the purpose, it can be divided into domestic sewing machine, industrial sewing machine and service industry sewing machine in between; according to the driving mode, it can be divided into hand, pedal and electric sewing machine; according to the sewing stitches, it can be divided into handstitch, bartack stitch, single-thread chainstitch, double-thread or multiple-thread chainstitch, single-thread or multiple-thread covering chainstitch and multiple-thread covering chainstitch sewing machines.
during the sewing process, every time the needle of the sewing machine passes through the sewing material twice, the unit formed by the stitches at its spacing is called a stitch. many consecutive stitches make up a seam. according to the chinese national standard gb4514-84, there are 88 kinds of stitches in six categories. among them, 100 types are single-thread chain stitches, with 7 types in total; 200 types are imitation hand sewing stitches, with 13 types in total; 300 types are double-thread or multi-thread lock stitches, with 27 types in total; 400 types there are 17 types of double-thread or multi-thread chain stitches; 500 types are single-thread or multi-thread chain stitches, and there are 15 types; 600 types are multi-thread covered chain stitches (also known as stretch seams) stitch), there are 9 kinds in total. typical stitches include single-thread chain, double-thread lock, double-thread chain, three-thread edging chain, and double-needle four-thread co

sewing machine refers to the use of sutures (single, double or multiple) and machine needles to sew sewing materials (two or more layers of clothing, leather sewing machine, paper, etc.), or to sew decorative threads on the sewing materials trace of the machine. for domestic, industrial and service use.
after the industrial revolution in the 18th century, the textile industry realized mechanized large-scale production, and the output of textiles increased sharply, which put forward an urgent requirement for the mechanization of sewing. we have sewing machine for beginners on sale, you can check our website.
in 1790, st. thomas, a british joiner, invented the world's first single-thread chain stitch hand sewing machine for punching holes, then threading, and sewing leather shoes. but its inventive design was not discovered until 1873. in 1841, french tailor b. timonier invented and manufactured a chain stitch sewing machine with hooks and needles, which was used in a military uniform factory in paris, but was destroyed by hand sewing workers. in 1845, with external financial support, he opened the world's first sewing machine factory and produced a sewing machine that could sew 200 stitches per minute. from 1832 to 1834, american mechanical worker w. hunter invented the world's first lock stitch sewing machine that used two sutures and a horizontally swinging shuttle, and the needle tip with a threading hole, but he did not manufacture or apply for a patent. in 1844, a

just like cars, the basic principles of most sewing machines are the same. the core of the car is the internal combustion engine, the hat ironing machine, and the core of the sewing machine is the stitching system. the loop stitching method is very different from ordinary hand sewing. in the simplest form of hand stitching, the seamstress attaches a thread through the eyelet at the end of the needle, then passes the needle and thread completely through the two pieces of fabric, from one side to the other and back again. this way, the needle drives the thread in and out of the fabric, stitching them together.
while this is very easy to do by hand, it is extremely difficult to pull with a machine. the machine needs to release the needle on one side of the fabric and grab it again instantly on the other side. it then entails pulling all the loose threads out of the fabric, reversing the direction of the needle, and repeating all steps in the opposite direction. the process was too complicated for a simple machine to be practical, and even by hand it only worked well with shorter threads.
instead, a sewing machine simply passes the needle partially through the fabric. on the needle, the eye of the needle is just behind the point, not at the end of the needle. the needle is attached to the needle bar, which is pulled up and down by a motor through a series of gears and cams (more on that later).
as the tip of the needle passes through the fabric, it pulls a small loop

a sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material to interweave or sew one or more layers of sewing material. the sewing machine can sew fabrics such as cotton, fiber crops, silk, wool, and artificial fibers, and products such as leather, plastics, and paper. and it derived art forms such as hand-push embroidery, computerized pattern machine, and computer embroidery.
categories of sewing machines
according to the purpose of the sewing machine, it can be divided into household sewing machines, industrial sewing machines and service industry sewing machines between the two; according to the driving mode, it can be divided into hand, pedal and electric sewing machines; according to the sewing stitches can be divided into sewing machine for hand stitch, bartack stitch, single-thread chainstitch, double-thread or multiple-thread chainstitch, single-thread or multiple-thread covering chainstitch and multiple-thread covering chainstitch.
household sewing machinein the early days, they were basically single-needle, hand-cranked sewing machines. later, electric-driven sewing machines were invented and became the mainstream in the market. divided according to its mechanism and stitch form, it can be roughly summarized as ja type, jb type, jg type, and jh type. a kind of household sewing machine—jg type household electronic multifunctional sewing machine.
industrial sewing machinemost of the industrial