1. When the ring plate starts to fall after it rises to the top, the automatic doffing convex wheel pushes against the travel switch, and the ring plate falls, so that the end will not be broken.
2. After doffing, swing the ring plate to the middle yarn position, then drive the car and raise the fender plate about 30 degrees. Five or six seconds after starting the car, swing the ring plate to the spinning starting position.
3. When the ring plate drops to about two centimeters close to the bottom, the whole vehicle stops automatically. In this way, due to inertia, there will be five to eight turns of tail yarn left. It is easy to grow hair after yarn and less yarn breaks.
The rules for breaking ends after yarn is formed are as follows:
1. The distribution of broken ends in doffing yarns is generally that small yarns have the most broken ends, medium yarns have the least, and large yarns have more broken ends than medium yarns;
2. After the yarn is formed, the broken ends are relatively large. It mostly occurs in the spinning section (called upper breakage). Breakage between the traveler and the bobbin (called lower breakage) occurs less often. However, when the steel ring and traveler are not properly matched, it will cause vibration of the traveler. , wedged, worn, burned, flying circles, etc., resulting in an increase in broken ends in the lower part. The chance of end breakage occurring in the balloon part is very small;
3. Under normal production conditions, the vast majority of spindles do not have end breakage during doffing; Repeated breakages may occur on individual spindles;
4. As the spindle speed increases, the package increases, the tension also increases, and breakages generally increase;
5. Yarn guide hooks and yarn spacers not only scrape yarn but also increase breakage;
6. Travelers The weight of the material;
7. Unstable balloon shape will increase yarn breakage. </p
