What should I do if the sewing locomotive sews the fabric with sequins and the needle breaks?

What should I do if the sewing locomotive sews the fabric with sequins and the needle breaks?

Sewing machine First, we check whether the lower machine needle is installed correctly, it is better to replace it with a new machine needle.
2. If it still doesn’t work, we then open the needle plate, turn the needle to the lowest position, and see that the distance between the tip of the hook and the needle is about 8mm. If it is, then raise the needle by about 2.3mm, and then check whether the tip of the hook coincides with the center of the needle. At this time, the needle and the tip of the hook should not be too tight, there should be a gap of 0.1.
3. Sometimes the needle will be slightly bent and the needle will skip. The easiest way is to try another needle. Sometimes such a simple operation is very effective.
4. There is also a relationship between the thickness of the needle and the thickness of the thing you sew. Thick things need thicker needles, and if the needles are thin, the needles will skip, and for thin things, the needles will also jump if they are thick.
5. It is because the machine needs to be maintained. Clean the tooth plate on the machine and the place where the shuttle is placed below, and then put some oil.
1 Set the stitch distance to the smallest jump, check whether the reverse sewing handle is at the middle height (except for computerized sewing machines), move the reverse sewing handle up and down by hand, if it does not move, it proves that there is no reverse sewing drive fork connected with the handle slider. break away. , if it is disengaged: open the back cover of the sewing machine, reset the handle connection slider to the stitch length reverse sewing drive fork
2 The needle pitch of common sewing machines is generally between 0 and 5, that is, the maximum is 5 mm. If it is too large, the feed dog will be in contact with the needle plate and the backstitch handle will jump up and down during the sewing process. Adjust the needle distance disc to a small size, loosen the middle screw of the needle distance disc, and turn the fastening screw of the needle distance disc counterclockwise.
3. If the teeth are too high or too low, the needle pitch will be small. Adjust the height of the teeth between 0.6 and 1.5 mm
4 Synchronous misalignment, open the back cover, loosen the two fastening screws of the eccentric wheel, increase the stitch distance, turn the hand wheel (counterclockwise), and turn it to the horizontal line between the needle point and the needle plate, and do not change it at this time position, and then turn the needle distance eccentric wheel (direction as above) so that the feed dog, tooth tip, needle plate and needle point are on the same horizontal line and fasten the needle distance eccentric wheel screw.
5 tooth wear
6 The presser foot does not press the needle plate
7. It has something to do with the sewing material, such as: blankets, fur collars, and the reason why the teeth cannot be grasped
Generally, these will have a small pitch