How to solve the common process problems of the rapier loom? Suntech rapier loom helps textile progress
The key process in the textile industry is the weaving process, which is the process of turning fabric into finished textile products through the loom, in which the equipment that must be used is the loom. The rapier loom is the most widely used loom, which has the characteristics of high speed, high automation, and high-efficiency production of the shuttleless loom, in addition to its positive wefting method with strong adaptability to various types of yarns, plus the rapier loom also has obvious advantages in multi-color weft weaving, which can produce up to 16 colors of weft yarns for color weaving products.
What are the common problems encountered during the operation of rapier weaving machines? Suntech summarizes some of the common problems to share with you.(try suntech power loom)
1. How to configure the shed opening time and weft insertion time of the rapier loom?
The weft insertion time of the rapier loom--the time of weft-sending gripper and the weft-receiving gripper entering the shed- is basically fixed. The opening time is mainly determined by the characteristics of the fabric and the clarity of the shed. Generally, plain weave fabrics should be configured with early shedding, conducive to weft beating, reducing the cloth fell movement, and improving the fabric's quality. Twill and jacquard fabrics should be configured with late shedding, which can meet the fabric's appearance and reduce the breakage rate.
2. How to set the leveling time of the small heald frame for the waste selvage?
The leveling time of the small heald frame of the waste edge of the rapier loom should be 25°～30° earlier than that of the plain weave, to ensure that the weft is gripped before the rapier gripper is released, instead of retracting back to the cloth fell and causing weft shrinkage.
3. What is the impact of the rapier loom's cutting time during weft insertion?
The weft cutting time is too early, the depth of the weft yarn clamped by the sending gripper is not enough, and it is easy to make mistakes during delivery. The cutting time is too late, and the weft tail is too long, which will cause two-wefts or weave the waste yarn into the cloth fell and affect the quality.
4. What are the reasons for the weft delivery error of the rapier loom?
There are flying fluff and sundries in the sending gripper weft clamp, and the weft clamp does not hold the weft effectively.
The weft cutting time is too early, the weft pick entering the weft gripper clamp not deep enough, and the gripping force of the sending gripper is too small.
The weft segment tension is unreasonable, and the weft gripper's clamping force is too small.
5. Why does the rapier loom still generates motion marks even with an automatic cloth fell matching device? And how to prevent it?
Cause:
Improper selection of running mode.
Let-off and take-up motion are abnormal.
Some particular fabric patterns, such as basket weave and fancy basket weave, have loose and tight structures due to the organizations, and there will still be motion mark after loom stop.
Precaution:
Choose the appropriate running mode according to the fabric pattern.
Check whether the let-off and take-up motions are normal.
Appropriately reduce the set tension.
Put off the shedding time appropriately.
6. What are the reasons for the weft-loop defect in rapier weaving? How to prevent it?
Cause:
The heald leveling time of the waste edge heald frame is too late. When the weft receiving gripper opens and releases the weft, the waste edge does not effectively control the weft.
The opening time of the receiving gripper is too early.
The number of waste edge yarn is too insufficient to clamp the weft effectively.
Precaution:
The heald leveling time of the waste edge heald frame shall be 25~30° earlier than the rest heald frames.
Adjust the opening time of the weft receiving gripper. If too early, it is easy to produce a weft-loop defect; if too late, the waste edge will be too long.
Check whether the number of waste yarns is sufficient and whether the broken ends have been fixed.
It can be seen that the start and duration of many operating steps in the rapier loom operation process are very important, how to match the time according to the actual situation? This requires a technical manager who knows the process and is experienced to guide it, or you can consider buying an intelligent rapier loom, which will automatically match the corresponding operation process through the automation system. The system will automatically set the start and end time of each process of weaving, fully connect each process, and can adjust the parameter settings according to the actual situation, and correct the problems in the process in time.
At present, Suntech is addressing the process problems in the weaving process, comparing a large amount of operation data, making experience summaries, and with the support of process data, optimally setting the time interval and articulation between each process of the rapier loom, and launching the Smart Rapier Loom with ST-ERL-808-ULTRAFAST808 rapier loom, which not only speeds up weaving, but also improves the stiffness of the weft warping mechanism, increases the weft compression force, and can automatically find the weft to effectively reduce weft breakage, allowing the machine to perform most difficult tasks even with limited operator skills and management.
The maximum speed of this rapier loom can reach 800 rpm, and the stable speed can reach 550-660 rpm, which ensures product quality and brings economic benefits to the enterprise. It is also suitable for weaving conventional fabrics such as cotton, hemp, wool, silk, and chemical fibers, as well as special industrial fiber fabrics such as glass fiber, metal fiber, and basalt fiber, which can be flexibly adapted to all kinds of fabrics.
The equipment adopts the motor drive, heavy-duty special steel, and solid beam and base imported from Spain, which is of high quality and ensures the stability of rapier gripper and rapier tape under high-speed operation, which is more guarantee for weaving quality. Compared with traditional weaving machines, this kind of weaving machine can save 15%-20% of power consumption.
Suntech, as a veteran machinery manufacturer, has a deep technical background and can provide loom technical support and perfect after-sales service to ensure the normal installation and operation of the equipment, saving customers' time for installation and commissioning, ensuring that the equipment matches the product and allowing production to run normally, welcome to ask for more information.
