In the process of using the sewing machine, the uniformity of the feeding dog is a very important link. No matter what brand of sewing machine, the feeding dog must have its standard height. Only within the standard height range, the sewing machine can work normally. Only by using it can we make better quality garments. Let's talk about the adjustment techniques of the sewing machine's feed dog.
1. Before using the new sewing machine, loosen the position screw of the feed dog. The height of the feed dog is determined by the thickness of the fabric. At this time, the position of the feed dog matches the position of other parts, indicating that the height of the feed dog is more appropriate ( To be within the range specified by the standard of the machine), just fix the screw in its position.
2. If the fabric is wrinkled or stagnant during use, consider that the feed dog position is too low and the pressure on the upper presser foot is too high. Therefore, the fixing screw of the feed dog can be loosened. , Raise the feed dog a little bit, and then tighten the fastening screw in its position.
3. If the fabric goes back and forth during use, consider the position of the feed dog is too high and the pressure on the upper presser foot is too small. Therefore, the fixing screw of the feed dog can be loosened. Lower the feed dog a bit, and then tighten the fastening screw in its position.
4. If the fabric slants irregularly during use, it may be considered that the screws that fix the position of the feed dog are loose, or the feed dog is skewed. Therefore, the feed dog can be moved. Loosen the fixing screw, correct the feed dog to the correct position, and then fix the fixing screw in its position.
5. To understand the transmission mechanism of the feed dog, the cooperation between the feed dog and the needle is actually the feed dog driven by the swing shaft Dalian rod. Sometimes the problem is that the overall synchronous movement is deviated. Therefore, it is necessary to eliminate After the above reasons, the position of the Dalian lever can be adjusted to make the feed dog move synchronously with the needle.
6. Before adjusting the synchronous movement relationship between the feed dog and the needle, first disengage the pendulum part, adjust the height of the movement track of the feed dog and the needle, and then fix the position of the feed dog and the needle. At the same time, it is also required that the gap between the left and right sides of the feed dog in the needle plate groove is equal.
