The main types of machines:
The needle on Janome, Juki and other sewing machines is a key working part that ensures the quality of work and range of possibilities.
Choosing between price and quality characteristics, the consumer should buy equipment, focusing on the second criterion.
Modern models with great functionality are fastidious enough. Therefore, it is important to follow all the rules of operation and on time to service the technique, for this you need to contact a professional craftsman with extensive experience, who thoroughly understand any model of sewing equipment.
And remember, whichever type of sewing machine you choose, it will last a long time if it is used correctly.
Adjusting the tension of the lower thread
Regardless of the type of sewing shuttle, each of them has an adjusting screw. Unscrew it most conveniently small flat screwdriver, which is available in a set of tools of any sewing machine.
Adjust the bobbin thread tension as infrequently as possible, because the slits of the screwdriver can “break” the screw slot and cause thread breaks and other defects. You should also not unscrew this screw more than half a turn, because the screw can pop out and get lost.
Check the correct tension of the lower thread can be checked as follows. Insert the bobbin into the bobbin case, pull the thread from the bobbin case and jerk it as shown in the photo. The thread should come out under the spring of the bobbin case jerkily.
How is the sewing shuttle
Sewing shuttle for any sewing machine. is its main device. The condition and adjustment of the interaction between the needle and the hook spout determine the quality of the machine. This parameter affects the absence of skips in the stitch, thread breakage. Its surface must be in perfect condition and free from roughness, jagged edges, rust.
The loop, grabbed by the stretcher sewing shuttle from the needle, expanded by its walls, comes off at a certain point and is pulled back into the stitching. Any nicks or rust spots can affect thread slip, and end up with “looping” thread in the stitching and even possible upper thread breakage.
Sewing machines differ not only in the availability of certain operations and functions, but also in the type of sewing shuttle. The shuttle stroke can be horizontal (2); vertical (3) or oscillating (1). And before you buy a sewing machine, be sure to decide which sewing shuttle option is right for you.
Setting up your sewing machine for today’s models
No matter what kind of machine you have. Our sewing machine tuning tips are universal and will work for Brother and other well-known manufacturers.
Re-assembling the shuttle hook mechanism on a front load 15 class sewing machine
Even the budget model has a sufficient choice of stitches that will allow you to sew with different techniques. In many ways, how to adjust the stitching on your sewing machine determines the choice of fabric. You can select the stitch parameters manually. Then the stitch will come out a quality stitch.
Note, for delicate materials you need to adjust the stitch on the sewing machine so that the step is shorter.
The instructions for Brother, for example, have a detailed description of the stitches with the tasks and type of fabric, so setting up the sewing machine yourself will not be difficult. For some fabrics and modes it will be necessary to change the stitch width and needle.
The basic MC for setting up a machine with a vertical hook:
Duration of the Masterclass. more than 60 minutes (at 20.07.21 MK contains the main video 49 minutes and 5 additional videos over 30 minutes) The composition of the MC. A series of videos that are updated/added as needed Includes basic video with adjustments, video breakdowns of major misadjustments with analysis and rework, and additional videos with features of different moments In addition, recommendations are given for maintenance and periodic maintenance
Adjustments are made on a “dead machine”. This is not a staged video, but part of a repair process on a specific machine with specific faults Read more about the raw data in
Features of the Master Class on the adjustment of the sewing machine with a vertical hook, the considered steps:
- How to disassemble the sewing machine. some secrets of disassembling the main housings with countersunk fasteners
- in what position and why to put the regulators of the sewing machine for adjustments?
- first point of reference. needle alignment. How the needle should be positioned in the plate needle hole
- work with the needle plate. what to pay attention to and how to fix the defects that usually occur during operation?
- Working with the toothed rack. Adjustment features and a breakdown of the most common defects and how to fix them
- Features of the synchronization of the needle, shuttle and rack and pinion. how should be? what to pay attention to? How to correct detected defects?
- Setting up a proper buttonhole with a breakdown of the most common faults. Analysis of the ways to eliminate these moments
- needle bar adjustment, needle position. Consideration of peculiarities and nuances. I show how to adjust the needle bar and needle by yourself
- adjusting the shuttle device. Consider the features and nuances
- Consider the factory adjustment reference points. Explaining the relationship as regulated by the example of a “dead” machine
- I consider variants of correction of machine performance. what and how you can do to make a sewing machine sew after compensating for run-outs and backlashes
- Consider the most common defects and malfunctions of the shuttle device. Troubleshooting
- I tell you and show you the features and secrets of complete machine lubrication. Fully lubricate all working units of the sewing machine
- Assembling the machine and examining the features and sequence of assembly
- Test the machine on the fabric and take apart the result of the adjustment
- An analysis of the resulting stitch and a review with consideration of necessary adjustments
Paying for a master class:
When you press the appropriate button. You get to the payment page of the payment service. The buttons are clickable. After payment, you are given indefinite access to a series of videos that may be updated/added from time to time
Correct threading of the bobbin, hook, and bobbin thread in a sewing machine
People are increasingly giving preference to sewing machines and moving away from hand sewing. The latter is often used by professional craftsmen only when dense material needs to be stitched with an awl or thick needle. Sewing machines consist of a lot of moving parts, so you need to know how to properly care for them, so that the process of working brought maximum pleasure. Among these elements is the most important element. the bobbin. This material will tell you how to tuck the bobbin into the sewing machine and what it is all about.
It’s the most important part of the sewing machine. needle
Strange as it may seem, but the needle is the most important part of a typewriter. During his “life” it makes thousands of piercing tissue and not always light and thin, so sooner or later the needle point dulls, and the needle itself bends. And if it at least once the needle “hits” the metal part of the machine body, the point will bend, literally and figuratively. But do we pay attention to it?? The needle seems to be intact, so it’s fine. But take a magnifying glass and look at the point, the blade will be bent to one side. How will such a point pierce the fabric?? Only one way. to pierce it.
Now let’s see how such a needle will form a stitch. The thread passing through the eye of the needle will cling to the bent point, and “slow down”, forming a surplus of upper thread in the stitch. Here is the first reason why there are loops in the stitching. Not only that, but a bent point will cause occasional thread breaks, especially in difficult sewing situations where the upper thread is too tight.
It turns out that sometimes the entire sewing machine repair is only the replacement of the needle. Treat the needle with great care. Even if it does not appear to have a defective blade or is not bent, try to change it more often anyway. Used needles do not need to throw away, since there are situations where the needle breaks one by one, such as when sewing leather bags. That’s when you remember about the jar of old needles.
Another reason for the adjustment of a sewing machine, especially old manual machines such as Singer or Podolsk, is the incorrect installation of the needle in the needle bar. The needle blade (Fig. B) must be on the side of the hook nose. Remove the needle plate and see if this is the case if the machine suddenly begins to loop and tear the thread.
It often happens and what the seamstress sets in a domestic sewing machine needle from an industrial sewing machine. It is impossible to mistake a household needle for an industrial needle. A household needle has a special cut on the bulb (Fig. В). But it is nevertheless the industrial types of needles that are installed. This should not be done categorically. First, you break the gap between the hook nose and the needle blade, hence the skipped stitches, and secondly, you risk damaging the hook of the sewing machine. Some industrial needles are much longer than household needles and can touch the hook surface, scratch it and even damage the hook.
Here is a diagram (A) of how to check the curvature of the needle. Externally, the needle can not tell if it is crooked or not, but if you put it on the glass (2), you can easily check the gap (1). Note that an uneven, bent needle will cause gaps in the stitching and sooner or later will break.
In order for a sewing machine to “confidently” work with fabrics that are difficult to sew, such as knitwear, stretch, thin natural and artificial leather, denim, needles designed for sewing just such fabrics and materials are available. They have a special shape of the tip and facilitate the passage of the thread in the fabric, almost eliminating skips in the stitch and looping of the upper thread. See. Needles for domestic sewing machines.
Theme of the lesson: “The device of the shuttle set
Please note that, in accordance with Federal Law N 273-FZ “On Education in the Russian Federation” in the organizations carrying out educational activities, training and education of students with disabilities is organized as a joint with other students, and in separate classes or groups.
Description of the presentation on the individual slides:
Topic: The device of the shuttle set. Prepared by: teacher of vocational training. Khomenkova N.Ф.
The goals: to acquaint students with the construction of the shuttle set of a household sewing machine; to create conditions for the formation of skills in operating a sewing machine, disassembly and assembly of the shuttle set; the development of cognitive interest, speech correction, visual and sensory perception, through corrective tasks and practical work. Fostering independence, diligence and communication culture.
Continuation of the lesson. Equipment: computer, electronic supplement, sewing machines: tables “Sewing machine working mechanisms”, shuttle set, working boxes Preparatory work: check sewing equipment, set up electronic supplement, prepare visual aids, organize the work of duty officers.
Summary of the lesson. I. Organizing moment. 1.Greeting. 2. Checking readiness for the lesson and workplace organization. Setting for the lesson to activate thinking activity. Everything is ready for the lesson. Every thing has its own place! What’s our motto?? Pupils: everything is at hand!
II. Revitalization of basic knowledge. Questions for trainees: 1.How sewing machines are differentiated depending on the drive? 2.In what direction does the flywheel rotate in different types of domestic sewing machines? 3.What are the speeds of sewing machines with different drives? 4.Why you should not clean and lubricate your machine when it is running? 5. What are the working mechanisms of each sewing machine??
III. This is a new lesson. Teacher: We continue to learn about the construction of a domestic sewing machine. Theme of the lesson: “The structure of the. set”. Which set, you will find out by solving the puzzle. Correction exercise. Assignment: You have a set of letters in front of you, from this set you will have to choose letters of the Russian alphabet and make a word. RLJCHELJZLFIHNOJSFJNOJWIJGO
Teacher: By solving the puzzle you have made what word. (children answer) CHALLENGE. (the teacher inscribes the word in the lesson’s topic on the board). Teacher: Let’s read out the topic of the lesson together: Children: “The device of the shuttle set”. Teacher: Our task is to familiarize ourselves in detail with the construction of the shuttle kit and to conduct independent practical work on assembling the shuttle kit and making trial stitches.
The teacher: The heart of a sewing machine is the shuttle. Perhaps the most important part of a sewing machine. When working, it makes or oscillating, or rotational motion. In domestic sewing machines shuttles either oscillate in the vertical plane, or rotate in the horizontal or vertical plane. Swinging shuttles can be found in “grandma’s Singers”, and in modern domestic sewing machines from many manufacturers.
There are three types of shuttles: 1.Swinging vertical shuttle:
Shuttle is the most common type of shuttle used for many decades for the production of most domestic sewing machines. This is the type of shuttle used in the “Soviet” Chayka, almost all brands of machines such as Podolsk Admin. The rotary hook
2.Vertical rotary hook. Higher class sewing machines, such as the Japanese sewing machine Brother, often use a vertical, rotating hook, or as it is also called, a rotary hook.
3.Horizontal-type hook. A horizontal hook does not have a bobbin case, the bobbin is inserted straight into the hook. Extremely convenient and easy. And most importantly, you can see how much thread is left on the bobbin, what color it is, and even how to remove the thread from the hook. Such a machine is much quieter, softer and performs its work very well. No skipping, looping or other problems.
For reference: This is what a bullet hook looks like on a Singer sewing machine from the century before last. According to myths and legends, you can sew anything you want with this machine, with high quality and without skips. In fact, this is a myth. The machine is completely outdated.
Teacher: Machines with rotating shuttles are widespread, they are more convenient, can be both horizontal and vertical. Rotating vertical shuttles are the most reliable and expensive, they allow you to adjust the tension of the bobbin thread, while preventing it from getting tangled, and have a vibration.
For reference: The most reliable type of shuttles. a rotating vertical shuttle double-running (performs two turns per revolution of the main shaft of the machine), it is made by analogy with the industrial shuttles and is used in expensive models of machines. This is a PFAFF 2140 computerized sewing and embroidery machine
PFAFF 2140 computerized sewing and embroidery machine
Teacher: let’s get acquainted with the structure of the shuttle set in a sewing machine of class 2M-PMZ.
Teacher: The bobbin case must be stationary while the sewing machine is in operation by inserting a pin of the setting plate into the groove of the bobbin case. To the cylindrical surface of the bobbin case with screws is attached plate spring to tension the lower thread. The shuttles of different sewing machines may differ in design, but they necessarily include all of the above parts.
Teacher: It is necessary to ensure the cleanliness of the hook, the annular groove in the groove where the hook rotates, and the inner cavity of the bobbin case. There is an annular groove in the housing of the hook stroke in the corner of the annular groove, which collects torn thread ends, scraps of cloth being worked on, and other dirt. They slow down the movement of the hook, making the machine run hard, causing the engine to overheat. Inside the bobbin case, on the stop screw, there is also a build-up of thread and frayed fabric. They slow down the rotation of the bobbin, which increases the tension of the bobbin thread.
Teacher: If the hook set is dirty or if a thread got caught between the hook and the housing during operation, the hook set should be disassembled. In this case, do not use force to try to turn the jammed mechanism, because it can lead to damage.
Fixing. 1.What they call the heart of a sewing machine? 2. What are the shuttles? 3.What movement does the hook make during operation?? 4.In which machines you may find an oscillating hook? 5. Do you think it is necessary to keep the hook clean?? 6.What can accumulate in the shuttle device?
A physical minute to strengthen the eye muscles. Controls. 1. Slowly move your eyes from the floor to the ceiling and back, without changing the position of your head. Repeat this exercise five or six times.2. Slowly move your gaze to the right, left, and back. Repeat 5-6 times. Exercise.3. Slowly move your gaze from right to up, then left to down and back again. Repeat 5-6 times. Manual.4. Make circular motions with your eyes in one direction and then in the other. Repeat 4-5 times.
Work in a notebook. Write down the date, the topic of the lesson. Write down the types of shuttles. Write down the names of the shuttle kit device.(Use the textbook. pg.99)
Teacher: Dismantling and reassembling the shuttle set is necessary if it is dirty and if there is a thread between the shuttle and the housing. In order to correctly disassemble and reassemble the hook set and not to damage the mechanisms of the sewing machine, the following rules must be observed: 1. Do not use force to turn the flywheel. 2. Clean the hook set from dust and thread scraps with a brush. brush. 3. Do not use any metal objects (scissors, screwdrivers) for cleaning so as not to damage the surface of the workpiece.
Teacher: And now let’s learn the sequence of disassembly and assembly of the shuttle set. There are instruction sheets on your desk, take them. Read each point carefully. Reading aloud: the method of expository reading. Demonstration of techniques by the teacher.
Instruction card. “Disassembling and reassembling the shuttle kit” Work procedure 1. Unplug the machine. 2. Raise needle to the top vertical position. 3. Take out the bobbin case. 5. Remove the compression spring and trim ring. 6. Take the hook out. 7. Use a brush to clean dust and dirt from the entire circumference of the hook socket. 8. Clean the hook. 9. Drop a drop of machine oil in the seat of the hook. 10. Reassemble the shuttle set, working in reverse order. 11. Sew test stitches on samples.
Teacher: Before you begin practical work, remember the rules of sitting at the sewing machine and the rules of safe work. Student responses. V. Practical work. Teacher’s current briefing. Checking the quality of work: 1. The machine works properly, the threads don’t tear. 2. Executed stitches are even, the tension of the threads in the stitches is even. Self-Check. Analysis of work, analysis of typical mistakes and identifying their causes.
Recap the new material. Questions for the trainees: 1. Why can the machine be difficult to move?? 2. What you need to know about the hook mechanism? 3. Why do not use metal objects for cleaning the shuttle set? 4. How to install the bobbin case in the hook? 5. What rules must be observed when disassembling and reassembling the shuttle cap? 6. Why not use force when turning the flywheel if the machine is clogged?
VI. To summarize. Teacher: The history of sewing equipment begins with the shuttle sewing machine. than 150 years have passed since the shuttle sewing machine was invented. Throughout this time, shuttle sewing machines have evolved and improved. Modern shuttle sewing machines are automated and computerized. But despite this, they still have disadvantages associated with the process of forming a shuttle stitch. To avoid trouble during the operation of the sewing machine, you need to be able to troubleshoot problems that arise during operation, to clean and lubricate the sewing machine. I think that today’s lesson has given you knowledge about the sewing machine’s shuttle system, and if you, in the future, turn your eyes to the sewing profession, this knowledge will be useful to you in your later life. Evaluation of student work in class.
Brief description of the document:
This lesson is designed for students in the sixth grade of a special (correctional) school of the eighth form: “Domestic sewing machine with an electric drive”.
l to acquaint students with the device of the shuttle set of a domestic sewing machine;
l create conditions for the formation of skills in operating the sewing machine, disassembly and assembly of the shuttle set;
l development of cognitive interest, speech correction, visual and sensory perception, through corrective tasks and practical work.
How to insert a bobbin into a sewing machine: Singer, Brother, Janome
Before installing the piece directly, check that the width of the spool matches the width of the cap. The bobbin must “comfortably” fit inside the cap. There should be nothing to prevent it from rotating. Its width must not go over the edge. If the surface of the part will appear chips, cracks and nicks, then sooner or later it will lead to hooks and thread breakage during the stitching. Even if the thread does not break, it can be extremely detrimental to the quality of the work.
Threading the lower thread
In addition to insertion, a number of additional threading operations should be done. If the process is unfamiliar, you should use the step-by-step instructions:
- Install the spool on a special pin, which is located on the top of the sewing machine body.
- Unwind some thread and wind it onto the bobbin by hand. If the part is made of plastic, it usually has a special hole for inserting the thread and then winding.
- Place a small bobbin on the bobbin winder and secure it well.
- Press the pedal of the manual or automatic machine to start the winding process.
Threading the upper threadThe Important! Wait for the automatic winding process to complete. If necessary, you can stop the machine after filling the bobbin with thread, when the winded amount is enough.
You will be interested in Using a blindstitch with a needle with your hands
Then the installation itself is made, but before it is also important to check what type of hook mechanism is used in the sewing machine. For the horizontal hook, the procedure is as follows:
- Remove the cover. It all depends on the model. It is disconnected in different ways in different machines. Familiarize yourself with the instruction manual.
- Take the threaded piece and unwind about 10-20 cm of thread. This is necessary to move it out through the needle, single thread, double thread or upper thread.
- Insert the threaded bobbin into the cap.
- Return the cap in its place.
- Pull the lower thread out.
Adjusting the thread tension If the machine’s hook is pointing vertically, the step-by-step process for threading is as follows:
- Remove the cap. To do this, as in the previous case, it is best to read the instructions for use of the device.
- Unwind 15-20 centimeters of thread from the spool and install the part in the holder (cap).
- Pull end of thread through tension regulator. It is important that the direction of thread corresponds to the position of the spring.
- Insert the cap into the shuttle, holding it by the highlighted tab or latch.
- Insert the cap and press the latch until you hear a click, indicating that the part is in place.
- Check the correct action. The tail of the cap should be in the special slot of the hook.
- Close the cover in the usual way.
- Bring the bottom thread out.
Filling a sewing machine