On the loom, in addition to the main mechanism directly involved in weaving, in order to ensure the quality of the fabric, reduce the damage of the loom material, and reduce the labor intensity of the loom operator, a warp protection device is also installed.
During the operation of the loom, sometimes due to mechanical failure or careless operation, the shuttle cannot fly out of the shed on time and is crushed in the shed. If there is no protective device, the warp tension will suddenly increase during beating-up, causing a large number of broken ends, and it will also crush the shuttle and machine parts. On the shuttle loom, the warp protection device must be equipped to stop the loom immediately when the shuttle is rolled. According to the state of the reed when the warp protection device is working, the warp protection device can be divided into three types: fixed reed type, floating reed type and combined reed type.
1. Fixed reed warp protection device
The reed is fixed on the sley. When the loom is running, once the shuttle stays in the shed for some reason, the warp guard device can make the reed stop rapidly at a certain distance from the beating area, so that the shuttle It will not break the warp yarn. The fixed reed warp guarding device can ensure solid and powerful weft beating when the reed is working normally, and it is mostly used on looms for weaving heavy fabrics. The warp protection device of the shuttle loom includes a powerful loom starting and braking device, which is composed of a logic control circuit, a shuttle flight sensor, a spindle position detector, an electromagnetic braking device, etc., so that the loom has rapid braking, positioning Parking, location driving and other functions.
2. Reed guard device
The steel reed and the sley are elastically connected. When rolling the shuttle, the steel reed will turn backwards, and the shuttle will not be squeezed to death, thereby protecting the warp yarn and the machine parts. The traveling reed warp guarding device has a simple structure and less impact during operation, but the reed will loosen slightly during beating-up, so the traveling reed warp guarding device is suitable for weaving thin and medium-thick fabrics.
3. Combined Reed Warp Protector
The device has both features of the free reed and the fixed reed. When the loom is running normally, the reed can beat weft firmly, and when the shuttle is rolled, the reed can be turned back briskly, which can be used to weave different types of fabrics (from heavy to thin) and protect The impact is small when the device is working. But its structure is more complex.
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Post time: Apr-25-2023
