[Solved] Needle not catching the bobbin thread
Why a sewing machine jams and tangles thread?
If your sewing machine is broken, the first thing you need is accurate diagnostics. Private Masters Association Needle will help you repair your sewing machine. Our specialists are highly qualified and have extensive experience working with different types of industrial and domestic devices that allows you to quickly and accurately cope with the problems. Masters leave at home, according to the work mode: from 8:00 to 23:00, seven days a week. If a part needs to be replaced, the resources of our own spare parts warehouse are used. Call an engineer, you can by phone 8 (495) 745-20-50, or use the feedback form on the site.
With the problem of chewing thread (especially with its entanglement in the hook mechanism) are faced by all owners of sewing machines. For a while the work is fine, but then the fabric does not appear even stitch, and bunch of threads. In addition, there may be jamming or difficulty in moving the needle, breaks. The problem has to be solved, because without solving it, sewing will be impossible.
Sewing Machine Not Picking up Bobbin Thread. Troubleshooting. elna lotus
Getting ready to work
A properly tuned sewing machine is half the battle. The following presetting algorithm will help you prevent malfunctions as much as possible.
- Make sure that the appliance is placed on a flat and stationary surface;
- Insert the needle into the needle holder;
- Install the spool with the upper (master) thread and connect it to the needle;
- Place the lower thread in the bobbin and the bobbin in the hook;
- Connect the power cord and foot controller.
The machine is now completely ready for use. If you have done everything correctly, the chances of the hook thread breaking or falling out of the grooves will be significantly reduced.
Why is the sewing machine not picking up the bobbin thread??
If you have a broken sewing machine, then, first of all, you need accurate diagnostics. Private Masters Association Needle will help you repair your sewing machine. Our specialists are highly qualified and experienced in working with different types of industrial and domestic devices, which allows you to quickly and accurately cope with malfunctions. Masters leave at home, according to the schedule: from 8:00 to 23:00, seven days a week. If you need to replace a part, we use the resources of our own spare parts warehouse. Call the engineer, you can by phone 8 (495) 745-20-50, or use the feedback form on the website.
In the course of daily use, you may notice that the sewing machine has started to skip stitches. If the upper thread does not catch the lower thread, it leads to a sharp deterioration in stitch quality, sewing becomes difficult. Causes may be different, and not all can be eliminated on their own. For example, if we are talking about a breakdown or failure of the settings of the hook mechanism (or needle barrier), without the help of a professional to return the functionality of these functional units is very difficult. Timely preventive maintenance will greatly reduce the likelihood of breakage.
How to get rid of malfunctions?
If you find that the sewing machine is unable to hook the lower thread due to imbalance, you should put everything back in place by forming the necessary distance between the hook spout and needle. You need to set the straight stitch mode, remove the needle plate and lower the needle. Then gradually lift it and watch that the nose necessarily passed 1-2 mm higher compared to the needle eye. It is important that the gap between the blade of the needle and the spout was about 0.15-0.2 mm. The screw, located near the hook, will help properly adjust the necessary gap.
If the thread is too taut in the bobbin (you can check by simple probing), you should correct the screw near the hook. When you see that the needlewheel has shifted, you need to change the thread tension of the upper plane. Heavy, slow movement of the hook indicates that it has accumulated dust and lint, which must be removed as a matter of urgency. It is recommended that this cleaning be done every 2-3 months. Cracks or rusty spots on the hook negatively affect the smooth movement of the thread and often lead to poor thread tension. Clean the element if it is damaged. In especially bad situations, it is recommended to replace the part completely.
How does the sewing shuttle work?
The main element that ensures the operation of a modern device is a sewing shuttle. In order to understand the possible causes of malfunctions, you need to know how it works.
The rotary hook picks up thread at the right moment with its specially sharpened spout. Needle is used for threading, which makes rapid up and down vertical movements. Depending on the year of manufacture of the model and the price of the product, machines differ in speed and reliability of the device. But the principle remains unchanged and is only accomplished through the jewel-like and combined operation of the shuttle.
IMPORTANT ! For proper operation and quality stitching, the needle and the part of the hook that catches the thread must be calibrated very accurately.
Reasons why the sewing machine does not catch the lower thread, and their elimination
When the machine stitch is torn in a prominent place, it not only spoils the look of the product and forced to re-stitch, but also tiresome by the need for constant rework, if the problem recurs. This defect occurs when the sewing machine does not pick up the lower thread.
Break in stitching can be caused by a machine not picking up the bobbin thread (
The reason for violations of the grip can be a mismatch of thread and needles in relation to the density of the fabric, malfunction in the regulation of devices that pull the thread and hold the needle, design faults of the sewing equipment.
Missing stitches in modern machines
On why the sewing machine skips stitches in the stitching, the site has an article Causes of skipped stitches. It describes almost all the reasons why the upper thread does not catch the lower thread. But this article is more suitable for manual and electric machines of the old type. They tend not to pull the thread due to the fact that the adjustment parameters of the hook and needle are out of sync. However, older models of sewing machines with a vertical rocking shuttle (Chayka, Podolsk) may have other reasons for which the machine sews poorly, especially in the zigzag stitch or when sewing knitwear. This article also discusses the cause of skipped stitches in modern domestic electric machines. Inexpensive models of sewing machines, such as Janome, Brother and others with a horizontal hook course. Why a modern household sewing machine suddenly began to skip stitches in the stitching? Explains the sewing machine repairman.
Reasons why the lower thread does not pick up
A good seam is formed only when the shuttle-needle interaction is well adjusted. The operation of the sewing machine is accompanied by constant vibration. Over time, this leads to a violation of the regulation of the interaction of the hook and needle. As a result, the quality of the seam suffers.
All causes can be divided into two groups:
Why the machine does not “catch” the thread from underneath
All of the reasons that the Juki, Brother or Aurora machine does not pick up the lower thread and does not make a stitch, it can be reduced to the fact that the gap between the hook and point has increased. There are several such factors:
- In the process of operation, the needle bar adjustment is misaligned. The axis drops too low or too high. And it does not allow the hook to capture the bottom loop.
- A needle that is not suitable for this machine is being used. Each type of equipment has its own accessories. They may differ in stem length, thickness, bulb shape. The selected option may not meet the required parameters, and the needle length may not be long enough to produce the required gap.
- Blunt or crooked needle is used. The gap between it and the hook is very small. And even length distortion due to a blunted tip or curvature can increase the gap.
- The synchronization of the hook and needle is out of sync. The needle nose must be 2.0 to 2.2 mm higher than the eye. This can occur if there is no stop on the needle bar, and the needle is not locked in position.
- The thickness of the accessories is not matched to each other. In this case, the loop is formed on the other side of the needle.
- If twisted or glossy yarns are used, the loop may be looped beyond the reach of the needle.
- Slit in the needle plate increased over a long period of use. When the needle is lifted, it pulls the fabric with it. The thread does not have time to make a loop overlap and no stitch is created.