How to install the bottom line of the sewing machine, how to put the bottom line of the sewing machi

1.Jumpers, the reasons for jumping cords are as follows: 1 The needle is bent, and the needle is replaced with a new one. 2 The pinhole of the needle plate is large, and the needle plate is replaced with a small hole. .

2.Broken needle 1 The needle is too thin, and the appropriate type of needle must be replaced according to the fabric. 2 If the sewing material is too thick, it is recommended to reduce the speed of the machine. .

3.Poor stitch 1 The thread is too loose or too tight, adjust it reasonably. 2. If the bottom line is too loose or too tight, adjust it reasonably. 3 needles and sutures.

4.Wrinkling of the fabric and elongation of the fabric 1 The stitches are too tight, and the tension of the top thread and the bottom thread is readjusted. 2 If the pressure is too high, relax the pressure on the presser foot.

5.Broken wire 1 Stringing is incorrect, rethreading. 2 The needle is not installed in the correct position, reinstall the needle. 3 needle bent or.

1.Jumpers, the reasons for jumping cords are as follows: 1 The needle is bent, and the needle is replaced with a new one. 2 The pinhole of the needle plate is large, and the needle plate is replaced with a small hole. .

2.Broken needle 1 The needle is too thin, and the appropriate type of needle must be replaced according to the fabric. 2 If the sewing material is too thick, it is recommended to reduce the speed of the machine. .

3.Poor stitch 1 The thread is too loose or too tight, adjust it reasonably. 2. If the bottom line is too loose or too tight, adjust it reasonably. 3 needles and sutures.

4.Wrinkling of the fabric and elongation of the fabric 1 The stitches are too tight, and the tension of the top thread and the bottom thread is readjusted. 2 If the pressure is too high, relax the pressure on the presser foot.

5.Broken wire 1 Stringing is incorrect, rethreading. 2 The needle is not installed in the correct position, reinstall the needle. 3 needle bent or.

I think it means to like you, because I like someone who always thinks, and I can't remember what you look like when I think about it, and if I love someone, I will feel like this, because I think about it too much, so I can't remember what it looks like. Congratulations, someone likes you, if you like him too, face it well, don't miss the person you like. I think it means to like you, because I like someone who always thinks, and I can't remember what you look like when I think about it, and if I love someone, I will feel like this, because I think about it too much, so I can't remember what it looks like.

Congratulations, someone likes you, if you like him too, face it well, don't miss the person you like.

It is a shaft of the bottom line, put it into the bobbin shell, the notch of the bobbin shell is above the needle, and then press it into the lock, press the needle down and then rise, and the bottom line thread is brought up by the needle and the thread can be sewn.

How is the bottom line of an industrial sewing machine installed? The question is simple and profound, that is, the bottom line is a shaft, put it into the bobbin shell, the bobbin shell notch is above the needle, and then press into the lock, press the needle down and then rise, and the bottom thread is brought up by the needle and the thread can be sewn.

The order should be that the bobbin is placed inside the bobbin shell and the bobbin shell is placed inside the rotary hook.

It's like putting an elephant in the fridge in a few steps? The first cylinder is put into the lock case, and the second lock case is installed on the lock head.

Just put the wire core in the shuttle, and pay attention to wrap the wire into the card slot.

<> "The installation method of the vertical shuttle is probably like this. To be honest, regardless of the success rate, this one is a little bad to use.

From time to time, there is also a knot that cannot find a reason, and the thread is uneven ......

Then there is the bottom line installation diagram of the flat shuttle.

This one is mounted in order and is engraved on the panel.

Others are also engraved on the components.

It's very simple, just put it in just like that.

If you can't hook the line, the transparent panel has a magnifying glass function, and you can find the problem by looking at it.

1. First open the transparent lid as shown in the picture below.

7. Then run the sewing machine, and then the bottom thread spool will be automatically wound.

8. Wait for the completion of the winding thread, pull the plug-in rod to the left, cut the thread, and then remove the bottom line spool and put it into the bottom line slot.

9. Close the lid, lead out the bottom line, and the whole process is completed.

You have to take the bottom line with the shaft and box out of the small round hole in the chassis below, but it is buckled, and at the same time, you need to use one finger to pull open the small handle on the wire box, and it will come down. After that, take out the bobbin in the box, put the new thread on the right side of the machine head with the tool, and then put it back into the box, at this time, pay attention to leave a thread head, along the seam of the box to the outside, not too long. In this way, you can put the box back underneath, the same is to pull open the small handle on the box, when you go up, you feel that there is a dark groove inside, and the right groove is OK.

You don't have to worry about it when sewing, it will automatically go online.

I remember that this kind of bottom line seems to be unwearable, there is a kind of metal shell that wraps the thread underneath, wraps the thread around it, buckles it, and when you step on it, the thread will come up naturally, as if you don't need to wear anything at all. I remember so.

Turn the needle rod to the highest position, put the bobbin shell in, put the bobbin shell cover in, press it by hand, turn the head, can rotate flexibly, and connect the press post.

It is possible to replace a device for the automatic supply of the bottom thread of the sewing machine.

An automatic bobbin feeding device for sewing machine with needle plate and a clamp under the needle plate, wherein a bobbin shell is housed in the clamp, and the bobbin automatic feeding device comprises: a bobbin changing device, which comprises a bobbin shell mounting and removal device for loading and removing the bobbin shell into and out of the clamp, and a transfer device for moving between the clamp and the position separated from it; a first mounting device which is set at a given position on the needle plate with a clamp as a reference; and a gripping body, which comprises a second mounting device fixed on the first mounting device, wherein the transfer device of the bobbin shell mounting and taking device and the bobbin core changing device is fixedly mounted on their given position with the second mounting device as the reference, wherein, if the first and the second mounting device are installed together, the transfer device of the bobbin shell mounting and taking out device and the bobbin changing device are fixedly mounted on the holding body at their given position with the clamp as the reference.

Take the needle off. Or don't thread the needle.

You don't have to change the bottom line for a lifetime!

If you choose a chain sewing machine, you don't have to change the bottom line all the time.

Who wants to study the sewing machine without changing the bobbin technology Let's study it together.

I did it, lockstitch, computer flat 13576390188 without changing bobbin

Yes! You don't want to modify, it's very troublesome, there are some for sale, go to a bigger sewing shop to see.