How to adjust the spinning "40 rounds" high-speed spindle doffing and broken ends?

(1) Whether the wire ring is light, the air ring is too large and the end is broken.

(2) Improper doffing operation, the head of the crimping line after intubation is too long, and the driving is twisted with the normal gas ring and the head is broken.

(3) Improper parking time, too long or too short tail line; Too long, the yarn has braids, and the head is broken while driving; Too short, the steel plate falls down and pulls the broken end.

(4) The parking position of the doffing is wrong, and the steel plate cannot straighten the pigtail when driving.

(5) It is related to the speed of driving. The starting speed is too low, and the air ring cannot be shaken off; If it is too high, it will be pulled off directly.

(6) The spacing of the wire ring cleaner is improper, and the ring type is not properly matched, and the wire ring or wire ring is hung with flowers.

(7) The position of the steel ring plate is too low, and the tail line is wrapped on the spindle.

(8) The yarn strength is too low, but this possibility is small.

197. Our spinning frame in our factory has frequency conversion, but there are several touch screens on the rear panel that are not sensitive, what is the matter?

A: The essence of the touch screen is a sensor, and the whole system mainly includes two parts: the touch detection device and the touch screen controller. The touch detection device is used for detecting the position that is touched, and then the information of the place is transmitted to the touch screen controller, and the touch screen controller converts this information received into contact coordinates, judges the meaning of the touch and transmits it to the PLC, and receives the command sent by the PLC to execute the instruction of the touch position.

Therefore, if the touch screen is not sensitive, it is possible that one or both of the touch detection device and the touch screen controller have a problem.

Problems that may arise with touch detection devices and how to deal with them are:

(1) The surface of the touch screen is dirty, resulting in insensitive response to touch. The surface of the touch screen should be cleaned in a timely manner.

(2) The location information is drifting. The touchscreen can be recalibrated using the "Correct Center Point" function.

(3) Electrostatic influence. Static electricity should be eliminated in time.

(4) Touch glass aging. Replaceable.

The possible problems and solutions of the touch screen controller are:

(1) Poor contact of signal transmission lines and burning of communication ports. Lines should be inspected and repaired.

(2) Circuit board failure. It should be repaired and replaced.

(3) The address of the touch screen system is incorrect. Reset.

198. What is the reason for the roving and hard head of the individual spindles of the spinning frame, and the roving twist coefficient is 110.

Answer: If the individual spindle of the spinning frame is roving, it is first necessary to distinguish whether the spindle of the roving is fixed or not fixed.

If the fixed spindle is roving, there may be problems such as low cradle pressure, improper position of the roller or upper pin, wrong use of spacer block or improper installation position; If it is not a fixed spindle roving, there are two possibilities, one is that your process parameter configuration is in the position of the critical process, and the other is that the roving sliver is not dry well and there are details. It can be improved by optimizing the process and adjusting the roving elongation.

Under normal circumstances, the small interval of the rear roller, the small pressurization of the cradle, and the small partition block may cause roving. If you spin pure cotton, the roving twist coefficient of 110 is okay.

(1) The floating area is small, and the cotton linters are easy to gather, so the floating area is larger.

(2) If there is static electricity, get some talcum powder and sprinkle it to make the floating area a little bigger.

(3) Whether the appearance of individual spindles is related to the state of the roller, the poor treatment of individual rollers, and the uneven coating.

(4) The position of the upper pin is skewed left and right, or the position of the aggregator is not correct, resulting in a small separation between the floating area.

(5) The floating area is small, and the aggregator is in contact with the epithelial ring after the aggregator is installed.

(6) The floating area is small, if there is a front pressure bar, there may be skewed or unclean problems.

(7) Check the status of the leather ring roller.

(8) Focus on drafting cleaning.

(9) The surface of the roller should be treated with antistatic.

(10) The cotton collector itself should be made of antistatic material or structure.

(11) The temperature and humidity of the workshop are not suitable.

200. 40 cotton yarns for spinning, 18x38mm spacing, about 1.25 drafting times in the rear area, 6.5 grams of roving quantitative, CV value of about 16.5, large, please advise, how to reduce the CV value in the process?

Answer: First of all, optimize the carding process, to protect the fiber as much as possible with less damage and reduce linter. Secondly, the reasonable configuration and coarse process to improve the fiber straightening parallelism. Thirdly, a new type of upper pin or pressure rod spacer block, high elasticity and low hardness free rubber roller can be selected on the spinning yarn, and the process configuration is optimized.

I don't know what the length of your raw material is, from the spinning yarn analysis I personally feel that under the quantitative weight of this roving, you can reduce the draft in the rear area, set at about 1.14-1.18, and the roving twist coefficient can be increased according to the situation;