How to perform a broken meridian detection on the suspension stand
There are several methods for detecting broken meridians on the suspension stand, including the following:
1. Mechanical inspection
Stop warp detection: On the loom, the warp will pass through the stop warp. When the meridian is normal, the stop meridian is in the normal position; Once the warp is broken, the stop piece will fall and get stuck on the stop strip, causing the two conductive
There are several methods for detecting broken meridians on the suspension stand, including the following:
1. Mechanical inspection
Stop warp detection: On the loom, the warp will pass through the stop warp. When the meridian is normal, the stop meridian is in the normal position; Once the warp is broken, the stop piece will fall and get stuck on the stop strip, causing the two conductive metal strips on the stop strip to be short circuited, triggering a stop signal and indicating the occurrence of a broken warp.
2. Electronic testing
Photoelectric sensor detection: Photoelectric sensors work based on the principles of light emission and reception. Under normal circumstances, light can be emitted and received smoothly. When the meridian breaks, it will block or change the path of the light, causing a change in the light signal received by the sensor. The sensor converts this change in light signal into an electrical signal and issues a meridian break alarm.
Capacitive sensor detection: Capacitive sensors work based on the principle of capacitance. Under normal conditions, a certain capacitance value is formed between the warp and the sensor. When the warp breaks, it will cause a change in the capacitance value. The sensor detects this change in capacitance value and generates a corresponding electrical signal to determine whether a warp break has occurred.
Detection circuit detection: For example, in the case of a broken warp detection circuit on a rapier loom, by adding clamp circuits to existing common detection circuits, abnormal states caused by flying fluff and wool covering the warp stop frame can be eliminated, avoiding false alarms and misjudgments.
3. Manual testing
Visual observation: During the weaving process, operators can directly observe the surface of the fabric and the operation of the warp thread with the naked eye, searching for defects, broken ends, or discontinuities caused by warp thread breakage. However, this method may result in missed detections for finer warp breaks or high-speed weaving machines.
With the help of lighting equipment: using strong flashlights or specific lighting tools to more clearly detect the location and situation of broken menstruation, helping operators to more accurately determine whether there is a broken menstruation phenomenon.
4. Fabric testing
Fabric inspection table: Place the fabric on a specialized inspection table, carefully inspect the entire fabric surface under good lighting conditions, and observe whether there are defects, abnormal patterns, and other situations caused by broken warp, in order to discover possible broken warp.
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