Opening MechanismTypes of Opening Mechanism
The commonly used shedding mechanisms of water-jet looms include crank, cam, and dobby. In recent years, with the advancement of electronic technology and the market demand for high-quality fabrics, various types such as electronic shedding and jacquard shedding have appeared. These types are briefly introduced below.
1. Crank opening mechanism
The crank opening mechanism is specially used to weave plain fabrics. It has the characteristics of simple structure, adaptability to high speed, simple manufacturing and finishing, and low cost. Therefore, the crank opening mechanism is widely used in water-jet looms.
2. Cam opening mechanism
Cam opening mechanism includes a negative cam mechanism with spring return and a positive outer conjugate cam mechanism. This shedding mechanism can weave many types of fabrics, such as plain weave, twill, and satin weave. However, as the fabric type is changed, the corresponding cam must be replaced. Moreover, because the positive shedding mechanism uses a conjugate cam to drive the heald frame to rise and fall, The manufacturing accuracy and cost are relatively high. Therefore, cam opening mechanisms are rarely used on water-jet looms. Dobby opening mechanisms are generally used instead of cam opening mechanisms.
3. Multi-arm opening mechanism
There are two types of multi-arm opening mechanism: mechanical type and electronic type. The mechanical type is divided into negative type and positive type. The dobby machine can lift up to 20 heald frames and is suitable for fabrics with small patterns with a large number of cycles. The heald frame can be raised or lowered according to the requirements of the fabric weave, or it can be kept above or below. In addition, when the shed is fully open, the heald frame has a stopping time, which is not only conducive to the selection of lifting healds, but also conducive to increasing the speed of the vehicle. It does not have any wasted movement, thus helping to reduce warp breakage.
4. Jacquard shedding mechanism
The characteristic of the jacquard shedding mechanism is that each warp yarn is controlled by a heddle instead of a heald frame, which allows each warp yarn to stand independently and relax up and down, and can weave complex patterns. organize.
5. Electronic shedding mechanism
Electronic shedding mechanism is a new technology. The shedding mode of each heald frame is controlled and driven by an independent servo motor. The shedding mode of each heald frame can be freely set through the multi-function operating panel. , different angles of repose and closing time up and down. Suitable for weaving some unusual fabrics.
AAA57865ERT34GSD
Extendedreading:https://www.yingjietex.com/product/75D-Plain-Polyester-Fake-Memory-Fabric-for-Garment.html
Extendedreading:
Extendedreading:
Extendedreading:
Extendedreading:
Extendedreading:
Extendedreading:
Extendedreading:
Extendedreading:
Extendedread
