The electric sewing machine always breaks the thread, what is the situation?

There are many reasons for wire breakage, the needle is not correct or bent, the hook is aging or burrs, the positioning hook has burrs, or there are wire heads, wire pickers, wire clamps, etc., will cause wire breakage, and a full range of inspections are required, if you can't find the reason, it is best to go to the repair shop. Hope mine is helpful to you.

Causes: Acute angles or groove hairs on the edge of the needle hole; Solution: Use or replace the needle with a new one after polishing the pinhole.

Reason: The thread holes of the top thread are partially brushed, so that the sutures are blocked during movement; Solution: You can use sand skin to polish or line to coat polishing paste to pull and polish.

Reason: fine thread for sewing thick materials; Solution: Replace the sutures accordingly.

Causes: The strength of the sutures is too poor; Solved: Replace the sutures.

Reason: The pressure of the crimping is too tight, which makes the suture bruise or break the yarn; Solution: The mule mother should be properly loosened.

Reason: There is an acute angle in the inner groove of the hook, which will hurt the suture or break the yarn; Solution: The hook should be polished inside, and then tested, or replaced with a new hook.

Reason: Improper fit between the hook positioning hook and the notch of the shuttle frame; Solution: Adjust the fit of the hook positioning hook so that the surface line can pass smoothly.

Reason: The needle is overheated and the chemical fiber wire is fused; Solution: The chemical fiber thread should be cooled with a needle or suture (silicone oil).

Causes: There are burrs and sharp angles on the edge of the pinhole in the needle plate, which causes the sutures to be bruised; Solution: You can use yarn rope and polishing paste to pull the light, but not too large, too large to cause jumpers.

Cause: The needle is in the wrong position; Solution: Adjust the needle to the correct position.

Causes: needle bending; Solution: Replace the needle with a new one.

Reason: The up and down stroke of the needle bar is wrong, the pick-up line on the needle bar crank, and the crank positioning mule are not positioned in the groove of the pick-up crank or the positioning direction is wrong; Solved: The wrong positioning orientation should be corrected after repositioning.

There are many reasons for the broken thread of the electric sewing machine, mainly there are broken bottom lines and top threads, and the common ones are as follows:

1. If the line is not adjusted, it will be disconnected. Solution: A good way to adjust the line is to adjust the bottom line first, and the bottom line should be after the core is placed in the shuttle sleeve, and it is advisable to hold the wire and the shuttle sleeve slowly down in one hand, and then adjust the surface line according to the bottom line.

2. If the presser foot is not adjusted properly, the line will be broken. Solution: There is friction between the side of the presser foot and the needle when adjusting the pressure foot, and the presser foot should be shaken from side to side to see if it will touch the needle.

3. The gap between the shuttle bed and the needle tip is too large and the thread is broken. Solution: The distance between the hook hook and the needle groove should be less than the easy needle breakage when adjusting the shuttle bed.

4. If the fabric is too thick, the thread will break. Solution: Tighten the screws on the top of the presser foot to make it have a certain amount of pressure.

5. If the fabric is too thin, the thread will break. Solution: When sewing, the presser foot goes out of the fabric and breaks the thread.

6. If the needle rod and the shuttle bed are not synchronized, the thread will be broken. Solution: When adjusting the needle rod, use a shuttle sleeve to put it on the needle plate, and the needle bar is just adjusted to the height of a shuttle sleeve, and then adjust the shuttle bed.

7. The bur pinhole is too sharp and will break the thread. Solution: It is recommended to use a round-headed pin, but it is a little more expensive.

There are also some reasons for disconnection due to our operation and improper use. The main ones are as follows:

1. The threading method is incorrect, not according to the correct line, check whether the top line is worn wrong or less than a certain line crossing. The stringing should be done correctly according to the instructions on the manual.

2. The needle is installed incorrectly, such as the needle long groove is reversed or skewed. The correct way to install it is to have the needle groove facing the operator. It is also possible that the needle eye and needle groove are not smooth, and the needle should be replaced with a new needle.

Check that the needle type is suitable, that the height of the needle bar adjustment is accurate, and that the needle is attached to the top of the needle bar. If the needle is too high or too low, it will affect the hook threading.

3. Suture problems, one is that the tension is too large, and the suture tension should be adjusted appropriately; Second, the quality is too poor, so better sutures should be used instead; Third, the suture is thicker than the eye of the needle, and the appropriate suture or needle is used.

4. If there are burrs or scratches on the needle, curved needle, needle board, presser tongue, wire hole and other parts, re-polish it with oil stone or fine sandpaper, if the scratch is serious, it is necessary to replace the parts.

5. There is fiber fluff in the shuttle, and the fluff and the thread are twisted with each other, so that the thread becomes thicker, and the thread will break if it cannot pass through the pinhole. Check whether there is cotton dust and dust accumulated in the cloth feeding teeth and shuttle bed, and pay attention to keeping it clean and clean frequently, so as not to affect the formation of the line step.

What is the problem with the broken needle of the sewing machine: the sewing machine jumper generally has the following possibilities: 1. The failure caused by the needle bend or needle installation can be replaced with a new needle or the needle can be installed correctly, 2. The tension of the wire pick spring is too large or there is no fault caused by the wire pickup spring, the wire pick spring can be relaxed and the wire pick spring can be solved, 3. The fault caused by the burr at the tip of the hook can be gently ground off with fine sandpaper, 4. The fault caused by the position error between the hook and the needle is too large, and the position of the hook and the needle can be solved by adjusting the position of the hook and the needle.

The specific operation is as follows: a) Adjust the up and down position of the needle and the hook First, the needle is rotated to the bottom, and then slowly continue to rotate when the needle slowly moves upward, the tip of the hook should be moved to the middle of the needle plane, if it is not adjusted. b) After completing the adjustment of a, you can adjust the position between the needle and the hook tip, and the operation is as follows:

Adjust the distance between the hook tip and the needle to 0, and then tighten the fixing bolt of the hook.

There are many reasons for the thread breakage of the sewing machine, there are broken bottom lines and top threads, the most common are the following: 1. The line will be broken if it is not adjusted well (the best way to adjust the line is to adjust the bottom line first, and the bottom line should be after the core is placed in the shuttle sleeve, hold the thread in one hand, and the shuttle sleeve should fall down slowly, and then adjust the surface line according to the bottom line) 2. The presser foot will break the thread if it is not adjusted well (there is friction between the presser foot and the needle when adjusting the pressure foot, and the presser foot should be shaken left and right to see if it will touch the needle when adjusting the pressure foot) 3. The gap between the shuttle bed and the needle tip is too large and the thread is broken (the distance between the hook hook and the needle groove should be less than the easy needle breakage when adjusting the shuttle bed.) 4. If the cloth is too thick, the thread will break (tighten the screw on the top of the presser foot to make it have a certain pressure) 5. The fabric is too thin and the thread will break.

When sewing, the presser foot goes out of the cloth and breaks the thread) 6. The needle bar and the shuttle bed will break the thread if they are not synchronized (when adjusting the needle rod, use the shuttle sleeve to put it on the needle board, and the needle bar is just adjusted to the height of a shuttle sleeve, and then adjust the shuttle bed) 7. The needle hole of the bur is too sharp and the thread will break.

If you still have time, please give me a thumbs up! Thank you! Good luck with your studies! Good luck!

What should I do if the sewing machine breaks the thread? There are two steps: look at the needleboard, and one more step is very important, simple and practical!

There are several reasons why the sewing machine thread breaks.

First, the problem of sewing thread.

1) Check whether the quality of the sewing thread is qualified. Stitches that are moldy, deteriorated, or have nodules are most likely to break.

2) Check that the sewing thread used matches the needle. The sewing thread is too detailed and easy to break due to insufficient tenacity; If a thin needle is equipped with a thread that is too thick, the thread will not pass through the pinhole and will be cut.

3) Check whether the tension of the noodle line is too tight. If the tension is too tight, it is also easy to break.

4) Check whether the pinhole of the machine is silted with debris, resulting in the sewing thread is not smooth and breaks.

Second, the needle problem.

1) Check whether there is a phenomenon of fusing the sutures due to needle heat, especially when using chemical fiber sutures, due to the high-speed operation of the sewing car, the machine needle repeatedly punctures the fabric and generates heat, so that the chemical fiber sutures with a low melting point are fused.

2) Check whether the hook hook is properly positioned. The hook is too close to the pinhole, and the suture is easy to break when taking the suture.

3. Other issues.

1) Check whether the needle and needle plate are firmly installed. Loose needles or needle plates will cause the needle and needle plate to touch each other, and the surface line will be broken.

2) Check whether there are bends or defects in all the places where the thread passes through (including coils, needle eyes, hooks, needle board holes, presser foot holes and other parts) to avoid the sewing thread being hooked.

3) Check whether the bottom line tube is too full or unevenly wound, the bottom line tube is too full or uneven winding, and the bottom line is not smooth, which is easy to cause the bottom line to break.

In addition, the operator's poor gesture or lack of rhythm of the vehicle speed will pull the fabric and cut off the top thread by the cloth feeding teeth, or make the thread pick up and down unevenly move up and down and tear the top thread.

The thread of the sewing machine is always broken and may be caused by the following reasons: the thread is loose or too tight: the thread is loose or too tight, which will cause the thread to fall off easily or the thread to break.

Therefore, make sure that the thread is properly tightened. The thread is too long: If the thread is too long, the thread is easy to get stuck during the sewing process, causing the thread to break.

Therefore, it is advisable to cut the thread head short so that it does not exceed centimeters before starting sewing. The sewing machine is not clean: If there is dust or debris inside the sewing machine, the thread end is easy to get stuck and cause the thread to break.

Therefore, it is necessary to keep the sewing machine clean and clean the inside regularly. Problems with the eye of the needle: If the eye of the needle has sharp edges or rust, the end of the thread is easy to be cut or stuck, resulting in the thread breakage.

Therefore, it is important to change the needle regularly and keep the eye of the needle clean. Poor thread quality: Poor thread quality can also lead to thread breakage.

Therefore, it is necessary to choose the *** line. If the above Fang Qing can't solve the problem, it is recommended to find a professional maintenance personnel to check whether there are other problems with the sewing machine.