Failure Causes of overlock sewing machine and the Countermeasures(vii )

Sew up of an overlock sewing machine is loose 

Uneven suture of an overlock machine Introduction

1. Threading error; Reinstall correctly;

2. the Wrong installation of wire rack; Reinstall the wire rack so that the wire can pass freely;

3. Installation error of lower cutter; Reinstall the lower cutter;

4. The cutting cloth is not neat.

(1) the cutter is installed incorrectly; (2) Blunt cutter; (1) Adjust the correct position of the cutter; (2) Sharpen or replace with a new product

5. Scratch the threaded hole; Re Polish;

6. Needle tip damage; Replace the needle with a new one;

7. Inappropriate height of feeding tool; Adjust the correct height;

8. The pressure of the holding device is too strong or too weak; Adjust the pressure strength of the fixture;

Reasons for unsmooth circumferential seam outgoing thread 

1. The fixture is installed incorrectly; Reinstall correctly;

2. The movement time of the crochet thread cam is not matched properly; Adjust the wheel orientation properly;

3. the Wrong installation of circular seam crochet; Reinstall correctly;

4. Threading error; Re-thread correctly;

5. The wire control strength is too large or too weak; Adjust the wire control strength properly;

6. the Wrong relationship between needle and crochet; Adjust the relationship between needle and crochet;

7. Burring of needle plate or tongue; Slip and polish with emery cloth or oilstone;

8. The control piece is rough; Slide and polish with emery cloth;

Sound of an overlock sewing machine 

1. Loose or colliding parts; Carefully check the parts of each part, and then tighten the screws of each part to correct the collision or looseness;

2. The oil circuit is blocked; After removing the oil pan, clean the garbage outside the oil pump to make the oil in and out of the oil pump unblocked;

3. The rubber pad of the oil pan is not leveled; Check whether there is a collision sound between the oil pan and the chassis. If so, place the pad flat so that it does not touch;