Оверлок 51 класса с уверенностью можно назвать one of the most widespread varieties of sewing machines, which can be used not only in large-scale production, but also in everyday life, and in small studios. Despite the fact that this technique is already considered very outdated, it works very well with thick and coarse types of fabrics. However, this device cannot cope with modern materials with high quality.
This type of sewing machine is designed forovercasting of knitted, linen and dress fabrics sectioning with double-stranded or three-stitching overlaying seam of chain type. In this case, the standard stitch length is usually from three to six millimeters, while the thickness of the material in the pressed form should not exceed two and a half millimeters.
Overlock class 51 is equipped with a needle mechanism and two loopers. If you want to replace the right one with a spreader, then this sewing machine will use only two of the three threads.
There is also a model such as the overlock 51-Aclass. It is a more refined version of this type of sewing machine. Its main difference is the presence of a differential mechanism for moving tissues. Such a mechanism usually consists of two parts, due to which the materials are stretched during the work process. This mechanism will deal very well with knitted fabrics, so be sure to consider this before you make a purchase. After all, overlay stitches will be very stretchable and elastic, which is very important for knitwear.
51 class overlock is a sewing machineindustrial type. It is characterized by a centralized wick lubrication of the mechanisms that are under the platform of the product itself. In order to carry out the lubrication process, you need to find the crankcase on the bottom of the product and fill it with oil. But do not forget about the lubrication of the upper part of the mechanisms that are located above the platform. This should be done with the help of a special oil can.
Оверлок трехниточный нужно смазывать как минимум once a month subject to very intensive use of the product. Be sure to lubricate all parts of the machine that rub against each other during the work process. Try to constantly rotate the shaft during lubrication. Experts recommend to carry out this process using an ordinary medical syringe. With it, it is very easy to do, quickly and conveniently.
Please note that this type of sewingThe machine is equipped with a mechanism for adjusting the tension of the threads, as well as the degree of pressure of the presser foot on the material you are using. Also, you can independently adjust the width and length of the stitches.
Заправка оверлока 51 класса – это очень важный process. It is from him and will depend on the correct operation of the unit. If you plan to use a three-thread overlapping stitch for work, then perform several actions in the order presented below:
In fact, configure this sewing machine is notso simple. Most often, a beginner can not do it. Usually one instruction is not enough, all knowledge comes with experience. For the overlock to work properly, it is very important to set up the correct mutual operation of the needle and looper. Pay attention to the main principle of the setting: when meeting, all loopers and needle should have the minimum possible clearances.
While the looper enters the loop, which is formed slightly above the needle's eye, the needle itself must gently enter the loop formed by the looper.
Left looper is the most important landmarkwhen setting up this sewing machine. While the needle will fall to the lowest position, the looper should also take the most extreme left position at a distance of about five millimeters from the needle. So, when the needle will go up a couple of centimeters up, a loop will start to form, which this looper should capture. In this case, be sure to pay attention to the gap between it and the needle itself. It should be no more than 0.05 mm. Such a gap can be set independently. To do this, you will need to loosen the screw of the leftmost looper as much as possible, and very carefully turn it to the needle. It is not always possible to establish the necessary clearance at the first attempt. Do not worry, such skills will come to you very soon, along with experience. After you have installed the necessary clearance, do not forget about the screw. It must be tightened.
Теперь, когда левый петлитель захватит петлю, он starts to pull it over its blade. At the same time, the right looper is moving towards it, which should enter the loop of the left looper. For properly adjusted work, the only thing left for the needle is to remove the loop from here.
Pay attention to the distance between the needle point and the eye of the right looper. When they are on the same horizontal line, the distance between them should be about 0.3-0.5 mm.
Setting the right looper actuallymuch simpler than the left. It does not have a special screw for adjustment, which means it will be very easy to adjust. To do this, just gently bend it in the direction you want. Do not forget that this rule applies only to the right looper. In no case, do such a fraud with the left, otherwise you risk breaking a sewing machine.
Иглы для оверлока могут иметь только единственно correct location with loopers. Only in this case the whole unit will provide you with high-quality and productive work. All the above numbers in millimeters are only indicative figures. In fact, all products may differ slightly from each other, so the numerical parameters will be slightly different. However, in any case, all errors will be insignificant.
Also, the numerical parameters depend on the cam.If you even rotate it one or two degrees, the position of both loopers will be slightly changed. However, in no case do not conduct such a procedure yourself. This can only be done by a specially trained master.
The most common and common causegaps can be simultaneous upward movement of the needle bar along with the sewing needle. Be sure to check this parameter. After all, it often happens that, even if you slightly lower the needle bar (only 0.1-0.2 mm), you can eliminate the cause of the gaps.
By the way, another common causegaps can be incorrectly selected thread for your overlock model. Take all responsibility to their choice, and you will not have problems with missing stitches.
To adjust the stitch length, on the overlockyou need to find a rail that moves due to the impact of the eccentric. This detail is regulated with the help of several screws, which can be found in the case of the sewing machine itself. However, again, it is not recommended to perform this procedure for a beginner. It is better to ask the master and follow his actions. And only then try to do it yourself.
Very often, the blunted knives of a sewing machine cause defects in the stitching. Therefore, you need to timely and properly sharpen them. At home, this will not work.
To this end, you can contact the key craftsmen. After all, they have such machines available.
Usually, the belt for overlock 51 class serves verylong, up to several decades. However, the period of its use primarily depends on the frequency of use of the sewing machine. You may not have to change it very often, but you need to be able to adjust its tension.
Modern models of belts usually havespecial teeth, so they need to be extremely rare. But models without them need more frequent tension. Most often on the overlock of 51 classes you can find exactly the smooth type of belts. However, if you have the opportunity, it is better to replace it with a gear.
Never pull the straps too tight.strongly, as this may lead to noise in the operation of the unit, as well as to a large load on the bearings. And this, in turn, will lead to very rapid wear of parts, and the belt itself, which can break over time.
Для того чтобы хорошо натянуть ремень оверлока, It is enough to check the tension with your finger, but after the fastening screws are tightened. The belt should sag when you exert little effort.
There is an even easier way to check the tension. You can carry it out during the work itself for a sewing machine. A properly tensioned belt will not whistle and buzz.
Nothing is forever, and your favorite sewing machine, too. Over time, you have to change some parts for overlock. Consider the main types of damage, as well as the most common problems:
Important advantages of this unit are its durability and relatively low cost. Overlok, the price of which is about 8 000-10 000 thousand rubles, will last more than a decade.
Overlock 51 class is also characterized by the fact thatit can work with absolutely any thread. Even old Soviet threads will do. However, most of all he likes the cone reels of number thirty-five. Try on the looper for overlock, as well as the needle to put the same type of thread of the same thickness. Of course, this is not necessary, but still - it is desirable.
Note that for each type of thread there is a resistance, so adjust the tension of each of them separately from the others.
If you pick the wrong tension, there is a greater likelihood of gaps, as well as the terrible appearance of the line itself.
Overlock, the price of which is relatively low, has a huge number of advantages over other sewing machines. What exactly is it that attracts seamstresses?
With it, you can get obmetochnye seams, which can not be done with a conventional machine. Overcasting seams is a very complicated process, and the overlock copes with it perfectly.
This unit works very quickly, and, most importantly, very carefully. With it, you can also create blind and decorative stitches.
However note that with anyThe sewing machine must be handled very carefully, otherwise there is a chance of serious injury. But, despite the risk of injury, the overlock is still very convenient to use. If you want this equipment to serve you for a long time, carefully look after it and repair it in time.
