When sewing with a zigzag, the machine passes the stitches. Sewing machine misses the stitches of the line
Why is the machine not sewing? In this article we will try to deal with this issue. If we open the technical guide to any sewing machine, we will see in it at the very end of the recommendation for ways to eliminate malfunctions in the typewriter. These malfunctions can be eliminated independently without resorting to the services of a mechanic. And not a few of them. If we analyze the leaderships to several machines, then we note that these malfunctions are identical and everything is connected, or with the care of the sewing machine, or with the wrong refueling of the threads, the installation of the needle, the bobbin, not the implementation of the rules for sewing on the machine, that is, the machine malfunction is connected As the media say, with a “human factor”. Therefore, you need to go through all the lessons to familiarize yourself with the machine, its refueling, the rules for sewing on it and methods of caring for the machine. Then you will not have to contact mechanics for many years. In any case, it was for more than 35-year communication with sewing machines. All the “breakdowns” of the machines, which I came across at the request of my friends to see “why the machine does not sew”, came down to the wrong refueling of threads, not correct installation of the needle and a bobbin cap, cleaning and lubricating the machine. This includes the selection of needles, threads, machine adjustment. My students often scolded the machine for not sewing with them, but as soon as I went to the typewriter and start to scribble, everything went like clockwork. “Experience is the son of difficult mistakes”, as the great Classic wrote.With. Pushkin is the first great thing, the second is love for cars. All mechanisms feel, “hear” and worry. I learned about this from my own experience with mechanisms, and recently I heard from experienced motorists. You can not scold the car. She hears and offends. I’ll tell you one case. Somehow I sewed, everything went well. Thinks of thought went on their own way, and I thought: “It’s time to change the machine, it is already old, there is money, we must take something more ripple”. Suddenly the thread began to break, the car stalled, then one trouble, then the other. I can’t touch. The line began to loop, I can’t configure. I was beating, I myself, and I think: “What happened? It just went well “. And suddenly the thought dawned on me: “Yes, it was offended by me!””. Once upon a time I read the esoteric book, and there was an article about how a woman did not get along with computer cars. She did not love them, and they did not love her. I began to apologize to the car, apologize, promised that she, old woman, did not Dena, as in a story about a “blind horse” to. D. Ushinsky. Slowly, the work fits from the place and everything was working out, I knocked out the thing. So I show her in the lessons, my dear “Seagull” by faith and the truth has served me for 34 years. The beginner seamstress often does not attach importance to such trifles as the selection of threads and needles, and scolds the machine for passing the stitches, and the reason is in ignorance.
Field sewing machines
To better understand where to look for the cause, you need to look at the kinematic diagram of the sewing machine. There we will see five mechanisms involved in the formation of the lines. We do not consider the repair of components, the replacement of parts, a shift of some nodes, which happens extremely rarely, at least I never had this. This is a specialist work. We will consider external causes.
The mechanism of the paw. Incorrect position of the foot (turn around the axis) can lead to a breakdown of the needle. If a weak pressure of the paws on the material, then the machine does not promote the material. By the way, a change in pressing the paws is very rare, with a radical change of material, for example, from a drape to a batist. To do this, remove the protective cover and twist the spring, except for class 2, where this spring is located at the top of the head and is completely available. The machine will not sew if you forget to lower the foot. The thread is confused and torn. 2. Needle mechanism. The needle can break if it is not correctly selected by number to the fabric (too thin) if it is bent, if the bobbin cap was not corrected and turned over during sewing. The machine may not sew if the needle is not inserted correctly: either not up to the end, or from the wrong side with a long groove, as the manufacturer indicates. The machine may not sew if the thread is not correctly tucked into the needle, if the needle is dull, and if the thickness of the thread does not correspond to the needle number. To insert the needle, you need to turn the steam wheel with a turn of the flywheel to the extreme upper position. Take the needle into the needle.Holder and raise it all the way up, and then firmly fix it with a screw. In this case, it should be located a long groove towards the last filamentor. In cars with a zigzag, usually a long needle groove is aimed at the sewing and the thread is inserted from itself.
The mechanism of the engine of the fabric. The gear rake will not promote the fabric if it is clogged with textile dust, if it is blunt due to the fact that the fabric is not placed under the paw when storing the machine or sewed on it without fabric, as well as if the regulator of lifting the foot is lowered to the position “for embroidery /dill “. The fabric may not advance because the fabric is thick and the stitches are very small. 4. The mechanism of the shuttle. I showed in a video lesson how to properly tie a thread into a bobbin cap, how to insert it correctly. It is also important to check the tension of the lower thread. This is the first adjustment, which is performed from the very beginning. Most often, this is rarely done, and always then enough to set up a good line of adjustment of the tension of the upper thread. The thread on the bobbin should be either one thickness with the upper thread, or (which is better) thinner. Follow the cleanliness of the shuttle device: disassemble the shuttle device for complete cleaning and lubrication.
The mechanism of the threader. If the upper thread of the machine is not correctly tucked, t.E. Twisted, mixed up, then the filamenter is tearing it and the machine does not sew. If the upper thread is very tightly stretched, then the filamenter will also tear it when feeding the thread into the shuttle device. You need to check the refueling of the upper thread and its tension. The machine will not sew if the thread did not get into the top of the upper thread tension, t.E. Did not pass (did not fail) through his washers.
Principle of operation.
Direct String. A zigzag control handle 23 at zero. Decorative line control handle 28 at zigzag mark. Zigzag 17 inclusion lever is in the extreme right position. The video of this lever is located above the axis of the backstage 25.
Rice. 51. Zigzag block (Podolsk cars.142 cl., “Seagull”.III CL., “Seagull”.142m CL., “Seagull”.143 cl.):
|1. A screw for mounting the block on the console axis;||11-lever the pusher of the block of copy levers;||21. A bias of the line of displacement of a line;|
|2. A limiter of a large rocker;||12-lever the cululis of the zigzag;||22 –Khnyag control of a line displacement;|
|3. Supporting finger of a small rocker;||13. Block of copyro disks;||23. A zigzag control and a straight line;|
|4. Small rocker;||14. Driven gear;||24. A screw of fastening of the axis of the driven gear;|
|5. Console axis of the block;||15. A screw for fastening the disk limiter;||25. Qulisa;|
|6. A screw for fastening the unit to the machine body;||16. A screw of attaching a zigzag unit to the machine body;||26-a screw of small rocker arms;|
|7. A screw of fastening of two confused swing levers during a zigzag;||17. Zigzag lever;||27. A screw of fastening of the remote sleeve of the block of copier levers;|
|8. A restrictive ring of a copy lever unit;||18. A screw of the handle brake 23 Zigzag controls;||28. Handle of decorative lines;|
|9. Block of copyright levers;||19. A screw for attaching the zigzag lever;||29. A screwdriver of the control handle 28;|
|10. The rear wall of the sleeve;||20. A screw for fastening the axis of the zigzag control handle;||30. Screwing screw of control handle 28;|
|31. Stop sleigh;|
|32. Front wall of the sleeve;|
|33. Screwing screw of the limiter;|
|34. Big butterfly (attached on the frame of the needleman)|
Cylindrical spring 8 (cm. Rice. 78) constantly pulls the frame of the 7 needleman to the right, trying to turn a large rocker in the zigzag 4 (right end 34) up (cm. Rice. 51). Then the small rocker (right end) constantly presses on the video of the switching lever zigzag 17. But the line of displacement of the line in this position of the control handle of the zigzag width 23 is at an average level. The backstage does not press the lever pusher 12 and copiers do not participate in the work.
Small displacement. When turning the control handle of the displacement of the line 22 to the left, the lever 21 of the drive of the line of the line will go down. The right end of the small rocker hand 4 will go down, and the right end of the large rocker 34 will rise up and the needle will shift to the right. When turning the control handle of the displacement of line 22 to the right, the lever 21 will rise to the highest level, and the small rocker 4 (left end) will move the end of the large rocker 34 down, and the needle will shift to the left.
Sigzag.Shaped line. When rotating the control handle of the zigzag width 23 to the zigzag mark, the zigzag lever 17 will move to the left, and the curtains will turn down, since the right end of the small rocker (the return effect of the cylindrical spring) constantly presses the roller of the zigzag lever); Two confused levers 11 and 12 are set in motion. The lever 12 moves down, and the lever 11. To the left, the copy lever 9 will press to the copyro disk 13 and will remove the applied pattern from it (in this case, the zigzag line).
Zigzag width is set by the zigzag 23. The roller of the inclusion of a zigzag 17 can take a different position along the length of the backstage 25: the farther it is from the axis of rotation of the backstage, the more the back will the curtains turn and the zigzag will turn to the larger corner.
Any malfunction in the zigzag block negatively affects the line. Therefore, you should consider all possible malfunctions in the block and methods for their elimination
The plate spring of the shuttle shuttle ring, if it is weakened, is on the bottom or replace the new.
Zigzag Disk “Podolsk”.142 cl. Put in the back (turn over); A copy lever will work on a new untouched track and the width of the zigzag will be normal (cm. Machine “Podolsk”.142 cl., Part 3).
At the sewing machines “Seagull”.142m and “Seagull”.143 do the following work: unscrew the screws 6 and 16, remove the block. Loosen the screw 30 and remove the handle 28, remove the block of copy levers and remove its shut.Off washer, remove four levers and two plastic bushings. On the last (zigzagn) lever, leave one remote washer and collect the entire block (cm. Part 3, “Sewing Machine” Seagull “- 142m, p. 3). Loosen the screw 27 and submit the remote bushing back (towards the copy of the copirps). Slightly squeeze the screw 27. Put a block of levers in place (in a remote sleeve). Press all the levers to your disks and carefully consider whether they were stacked strictly on their disks.
Sewing machine not picking up bobbin thread, Hook timing, How to fix Stitch Problem
In order to prevent unusually rapid wear of the plastic copyro disk, you need to do the following: after 3-4 months of operation of the car, the bracket is mounted by the cylindrical spring of the return of the needler with a maximum tension position. To do this, weaken the screw of mounting the bracket (it is to the left of the zigzag block near the posterior wall at the bottom of the sleeve) and, taking the screwdriver in the left hand, squeeze it forward to failure, and with the right hand with the help of another screwdriver, firmly wrap the screw. See if the leash of the needleman for a cylindrical spring hurts in the front cavity? If it hurts (which is permissible), it means that the bracket is not compressed enough and the operation must be repeated.
Determining the source of the problem
To find out the reason, you need to check a few nuances. It is better to start with simple, perhaps the matter is about them.
- Incorrect thread tension. It was poorly adjusted at the beginning of the work, or it changed due to contaminants in the element. How to solve the problem, described in detail in the user guide. Also, some recommendations can be found from our article.
- An inappropriate needle has been installed. It happens that a needle is established by mistake, which is not compatible with this model of the machine. She will not interact with the shuttle at the right time, but will simply pierce the fabric with a certain step. The manual usually has information about needles. It is necessary to check the marking on the needle that is currently installed in the typewriter.
- Spoiled needle. Due to wear or incorrect operation, it can dull or change the geometry. Only a needle to replace a new one will help here. To ensure high quality the sewing of the needle, it is recommended to change regularly. If at the entrance of the tip into the fabric a sound appears that is different from normal. It’s time to change the needle.
- The needle is not suitable for this type of fabric. Depending on the type of material, its thickness and elasticity, it is necessary to use the needles suitable for it (there are conformity tables in the instructions). Dense fabrics, skin, as well as delicate materials should not be sewn with a universal needle.
Different needles are designed for different fabrics
If none of the listed factors is source of the problem with a line, you need to check the gap between the ear of the needle and the loop of the shuttle. It is better to use a magnifying glass. You should act according to the algorithm:
- Set the program “Direct String”.
- Lower the needleman to the lowest position. Raise the needle by 1.8-2 mm. The correct location of the elements should be like this: the nose of the shuttle should rise above the ear by 1.1-2 mm, and the gap should turn out 0.15-0.25 mm, the limit of 0.3 mm. If the gap came out more, the shuttle will not be able to hook the upper loop.
A large gap can only be fixed mechanically. It will be better to call the master, because not only strength is important here, but also accuracy. From unauthorized home repairs, the machine can “fly” with a guarantee.
Advice! It is better to check all the described situations before the start of the work: the quality of the thread and its correspondence of the needle, and the needle for the correspondence of the fabric. It is also worth viewing the machine for pollution and regularly prevent prevention.
Zigzag prefix for Podolsk typewriter.
The largest number of views on my channel belongs to the Podolskiye Direct machine 2M class, a simple hand machine based on Zingerovskaya. Of course, subscribers are interested in how you can set the slices on this typewriter? I worked out all the options for using this machine to the maximum.“What can the Podolsk machine?”, And this was reflected in the form of series of articles and master classes. In this article I want to show how to set sections on a straight.Line machine using a zigzag device. In the video, I talk in great detail about this device, so I will not repeat myself.
, I want to say that the “Overlock prefix” does not fit the Podolsk straight.Line sewing machine of the 2nd class, although outwardly it resembles a zigzag prefix. The prefix “Overlock” is designed to deviate the needle, that is, it for cars with a zigzag. The zigzag device to the Podolsk typewriter is based on the fact that the needle does not deviate from the axis, but the ribbed foot, clinging the fabric, moves it along the zigzag.Like trajectory. Therefore, it is important: do not press the fabric to the machine platform, and do not use very thick fabrics such as drapes.
Testing the edge with a zigzag in the classification of the seams according to GOST refers to the mixed line, and in the classification for its intended purpose. To the edge seams: the seam in the bend with an open cut. Most often, this is the processing of internal sections: lateral, shoulder, reliefs and others. This technique is shown in the video “Turning out sections. Seam in a rampant “. But when processing the edges of the oxen, ruffles, quitters, etc., they use both a seam in a hem with an open cut, as well as a seam with a closed cut. In the second case, a chip paw is used. A snail that narrowly tightens the edge, and then it is fixed with a sigzag stitch. Such a seam is called “spitting”. We will consider it later in an article on small mechanization.
Today we examined the methods of processing the edge with a zigzag. Once on the Internet, I read a comment on one woman: “Unfortunately, I don’t have an overlock. On the sewing machine, only seam zig is provided (the quality is very mediocre, the washing will not survive) “. If you perform it correctly, as I advised you today, then this seam will “survive” the product itself, this is when the product has already broken, and the line remains unchanged. Checked on experience.
Is the article useful for you? Write to me in the Комментарии и мнения владельцев, share your experience in processing the products of the product.
Waiting for your Комментарии и мнения владельцев and questions. If the article was useful, share it with friends, like it, subscribe to the news and get a book as a gift “Sewing Machine for Home Used”.
Features of a zigzag.Shaped seam
In domestic conditions, not every dressmaker can buy an overlock in addition to the sewing machine. Especially if it sews it infrequently. Therefore, many skills for processing the edges of the product use the SIGZAG seam. To get a beautifully sealed edge of the product, the seam must meet certain requirements:
- The length of each stitch should be the same.
- The distance of the step between the neighboring punctures should be the same.
- The seam should not pull the fabric. This happens especially often on thin fabrics.
When working with dense zigzag fabrics, it is almost always good. But if you use a zigzag line for the marking of the edge of thin fabrics (even cotton) the quality of the seam will be reduced. Experienced seamstresses use various tricks for working with thin fabrics, for example, put paper under thin fabric, or process the edge of the canvas with a slope. But in this article we will not dwell on this issue in detail.
Elimination of the problem
As previously mentioned, looping occurs, as a rule, due to weak tension of the upper thread or too strong tension of the lower. In order to adjust the tension of 2 threads, you should make sure that on their path to the material there are no barriers in the form of bullying, bends, pollution and the like.
When adjusting, it should not be forgotten that weak tension is the cause of a weak sample (in this case, looping may be absent), strong tension is the cause of a frequent cliff of any of the threads.
If the problem is not eliminated through the tension controllers, you must look at the clamping of the paw to the plate. To do this, set the needle in the extreme position (so that the comb does not peek out of the needle plate). Pressing with your finger on the crush foot and look if the paw itself dangles. If it hangs out, this means that the foot in the process of sewing improperly presses the fabric to the needle plate, which does not allow both threads to weave with each other on the material.
Fixing this failure is very simple. It is necessary to examine the bobbin cap and directly the bobbin. To do this, insert it with threads into the cap, stretch the tip of the thread into the slot intended for it and, holding the cap with one hand, slowly stretch the thread with the 2nd hand for 5 centimeters. We carefully monitor whether the spool is delayed in the cap in the process of stretching the thread. If the spool walks in the cap freely, install the entire kit into the shuttle (spapeller), as for the first time, pull the tip of the thread, and carefully monitor the delays of the bobbin.
If the thread slows down from time to time, this will be the cause of the loop. In this situation, remove the needle plate and clean it from below between the teeth of the comb, as well as the set of parts of the shuttle. Lubricate everything.
Install the needle plate in place, twist it and prepare the machine for work. We take a worthless rag and for 30 seconds we drive it back and forth so that the excess oils are left. Then we begin to regulate the threads again.
If this did not give a result, therefore, the source is more deeper and this already applies to the setting of the machine. From the compensation spring to violations in the work of the shuttle (this is the simplest) and from the incorrect ratio of the camshaft to the main shaft to the knocked.Out adjustment of the nitipodal mechanism.
In such situations, knowledge of the design of the machine is necessary, so you should seek help from the welder.
Methods of elimination
In the case when the sewing machine does not capture the lower thread due to the imbalance. Set up the mechanism by setting the right distance between the needle and the tip of the shuttle. Make the following.
- Turn on the direct stroke.
- Remove the needle plate.
- Make the extreme lower position of the needle.
- Gradually lift the needle, twisting the drive. In this case, the tip of the shuttle should pass 1.5 mm above the hole in the needle. Between the tip of the needle and the tip of the shuttle, the distance should be on average 0.175 mm. These settings are set using an ultra.Chip screw.
On old devices. PMZ, Podolsk and Seagull, the same calibration is performed in a zigzag.Shaped mode. The distance between the needle and the shuttle tip is detected with the left and right passage of the needle through the fabric.
Precisely, the following manual to eliminate the same malfunction will help to navigate.
Excessively weak or tattered thread wound on a bobbin. The tension should be checked manually or through a test seam.
Make sure the bobbin is inserted correctly. Reconfigure the tension with a screw near the shuttle mechanism or within it.
The needleman went to the side when performing a line.
Check that the upper thread is not pulled overly.
The shuttle moves with a noticeable effort, some stitches on the seam are absent, the thread from below is not always grabbed.
Clean the shuttle from scrapings of the thread that make it difficult to its course.
The fabric is involved in the space (under the panel), leading the shuttle to frequent stuck.
Change a blunt and/or curved needle. She cannot quickly break through the matter.
Weak, sagging loops on the back of the stitch. The shuttle works uncontrollably.
Jammed Sewing Machine Fix. A Common Reason a Sewing Machine May Appear Jammed
Replace the faulty details of the shuttle. He often gets stuck due to burrs, oxidations and microcracks.
The heavy course of the car.
First of all, grease the crankshaft bearing with the composition indicated. One. In all sewing machines, the crankshaft rotates in two sliding bearings. Lubrication by the indicated composition, especially the right, near the flywheel, bearing, solves this problem.
Eleven. There is no lubricant in hinges and other rubbing conjugated parts of the machine.
Eleven. Grease the sewing machine periodically. The lubrication period depends on the duration of its work. Other reasons also affect the frequency of grease: the quality of the oil, storage conditions, temperature, air humidity, dustiness, parking place, as well as how high.Quality the rubbing surfaces were lubricated the previous time.
Rice. Thirty. The mechanism located under the platform of the Seagull car.2 cl.:
|1. Restrictive ring;||11. Vilgated lever of the gear rack;||21. Stop screw of the sleeve;||31. A surge of the platform;|
|2. Rings fastening screws;||12. Finger video;||22. A surge of the platform;||32. Feed shaft;|
|3. Stop screw of the stroke of the shuttle;||13. A height regulator;||23. Bracket;||33. Locking screws of lifting fist;|
|4. Countrogayka;||14. Adjusting screw of the height of the teeth;||24. Connecting rod;||34. The first sleeve of the feed shaft;|
|5. A tide of the platform;||15. Traction of shutdown of teeth from work;||25. A vertical fork for feeding;||35. A tide of the platform;|
|6. The body of the stroke of the shuttle;||16. The finger of the video (traction);||26. Bracket;||36. Stop screwdriver;|
|7. Shaft of the pusher;||17. Fork for lifting a gear rack;||27. A filament screw of the bracket;||37. Stop screwdriver;|
|8. A screw of fastening of a led gear;||18. Fist of lifting the teeth;||28. A fitting screw of a connecting rod;||38. The first sleeve of the shaft of the shuttle;|
|9. Driven gear;||19. Shaft of shuttle;||29. The second sleeve of the feed shaft;||39. A knitted lever bracket;|
|10. Leading sector gear;||20. The second sleeve of the shaft of the shuttle;||30. Stop screwdriver;||40. Cronstein screw screw;|
|41. Possible displacement to the left of the axis of a forking lever|
Rice. 31. The armor of the needleman 2M PMZ and others.:
|1. Upper head;||2. Lower head;|
|3. The side facing the needler is cut off|
There is no gap in the teeth of the worm and led gears in the zigzag block:
The upper thread cliff
The next most frequently asked question is “why the upper thread is torn in the sewing machine?””. The reasons are divided into two groups: related to the selection of accessories and threads and related to settings and adjustments. First of all, we analyze the reasons for the first group: check the quality and shelf life of the threads, check whether the number of the thread of the installed needle corresponds to the number of the thread, we change the needle for a new one if there are roughnesses and burrs on it.
If the measures described above are not given the result, then you will have to dig deeper. First you should check if the thread is correctly filled out. Even having sufficient experience in handling a sewing machine, one cannot be completely confident in the correctness of your actions-perhaps you are distracted and did something wrong.
If the machine is tearing a high.Quality and properly seasoned upper thread, then the problem may consist in a bobbin cap, namely in the spring of its lock. If it is weakened, it is recommended to purchase a new bobbin cap and replace the failed.
It is also worth checking the spray gun. The seizure of the spinker finger no longer ensures the retention of the flair of the bobbin cap during operation. If the defect is detected, a complete replacement of the sprayer will be required.
Track when the nose of the shuttle approaches the needle. If it is delayed, then the thread captive can break the thread. In this case, it is necessary to adjust the approach of the shuttle nose to the needle, which for beginners is quite difficult.
It is recommended to check the oil level in the crankcase and its intake in the ring border of the shuttle. In some cases, the problem with the cutting of the thread is solved by the simple addition of oil.
The upper thread can also be torn due to the malfunction of the adjustments in the mechanism of the foot. What to do in this case? If the paw plays, then it is necessary to fix it; If the lowered needle touches the foot, then it is required to adjust its position.
If your typewriter has been for several years, and before that it served properly, then probably the cutting of the thread occurs due to the resulting burrs and Zazubrin in the way of its passage.
Similar defects may appear in the following places:
- On the surface of the sprayer;
- On the cone of the spanger belt;
- On the installation finger;
- On the installation plate;
These vulnerable places must be cleaned and polished to a smooth surface. If possible, a part where there are a lot of burrs, it is better to replace with new.
Not only the upper, but also the lower thread can break. If such a malfunction appears, then the bobbins are most likely worn out. It is enough to replace them with new, completely identical to the old. Since the replacement of rhpyk is required after several years of the machine, when several generations of the purchased model have already changed on the market, to avoid problems with the search for spare accessories, I advise you to immediately purchase an additional set of rumps.
In addition to all these causes of the thread of the thread, excessive tension should also be noted. This error is often found in inexperienced craftswomen, so do not rush to call the master or call the service center.