An Analysis of the Process of Colorful Yarn Device in Colorful-dotted Yarn Section
I. Overview:
Segment yarn is a roving that uses two or more kinds of raw materials (colors). A segment yarn device is installed on the spinning frame to realize a continuous roving for the main roving, and another roving for the intermittent feeding of the auxiliary yarn. With a single color yarn, color dots, bamboo single yarn. During the production, each motor of the middle and rear rollers is driven separately: the middle roller continuously feeds in, and the rear roller intermittently feeds.
Plett ZND-smart segment yarn (color point yarn) devices gather more than ten years of experience in spinning, and have successfully produced more than one thousand species of colored yarns for many textile companies, helping companies to achieve multi-species, high-addition, high-profit New mode of production! It also provides technical guidance and programming for local colleagues. Is the market leader in the industry, industry originator.
First of all, I sincerely thank you for purchasing the ZND intelligent fancy section slub yarn device from Pratt Technology Co., Ltd. in Wuxi. Please read this manual carefully before using this product, which will help you to use this product correctly and skillfully. Play out the system's excellent features.
Second, introduction
ZND intelligent segment color yarn device is a technical upgrade product of servo motor slub yarn device. It includes spinning method, spinning management, spinning alarm, spinning warehouse, spinning parameters, and expert spinning system. The realization of these functions greatly facilitates the use of manufacturers, reduces the trouble, improves the work efficiency, and provides favorable conditions for the manufacturer to seize the market in the first time.
Current servo technology is an advanced technology in motor drive. ZND intelligent segment color yarn device adopts all-digital imported servo motor, full-closed loop control, and the positioning accuracy can be instantly started and stopped at high speed. High torque, stable operation.
ZND intelligent segment color slub yarn device has the following features:
1. High-precision positioning control method of servo system
The servo motor receives a pulse and rotates through a certain angle. The error of one revolution is zero. This control method is applied to a numerically-controlled machine tool used for precision machining, so the accuracy of the length of the segment color and the length of the segment color distance can be verified. .
2, front roller speed following technology
The principle of this device is to completely drive the front, middle and rear rollers independently. The front roller is dragged by the spindle motor, and the servo motor drags the middle and rear roller drives. Between them is the complete synchronization of the front roller and the middle back roller by a non-contact sensor. During the entire operation, the rear front roller speed is under the surveillance of the system.
3, front roller speed monitoring
The system can fully adapt to changes in the front roller speed. When the tracking function is started in the spinning mode screen, the current roller speed changes, and the middle and rear roller speeds change accordingly.
4, quality problems alarm function
Starts the light alarm function in the spinning management world. When the system to the quality problem uninterrupted alarm function appears so that customers can find the treatment as soon as possible. When the power is suddenly cut off, the system will completely cut off the yarn so as not to spin the waste yarn.
5, perfect quality alarm system
This function is a reliable guarantee for spinning high-quality segment colored slub yarn, which includes spinning quality alarm, improper parameter setting alarm and so on.
6, spinning warehouse management system
The establishment of the spinning warehouse brings great convenience to the craftsman for the process management of the segmented colored yarn. It provides the clerk with 100 storages for spinning parameters, and each warehouse can put up to 50 sets of process parameters. The number of groups, free to call, store and modify. The process parameters can be stored for at least half a year without continuous power-up.
7, expert spinning function
The design concept of the expert process self-setting system is to maintain the consistency of density style and excellent distribution style in the case of a wide range of fabric widths. At the same time, 16 sets of data are automatically generated for spinning by scientific calculation. It can store up to 200 expert process warehouses.
8, a variety of spinning methods
The device has a variety of spinning methods such as regular spinning, irregular spinning, and expert spinning.
9, other functions
The device also provides some unique features, such as: the adjustment function of the shape of the knot, this function is quite practical for the spinning of some difficult species, while the function to solve the segment of bamboo slub deformation and lean Phenomenon, and help solve the problem of Duan Cai bamboo knots.
Third, application and spinning range
The device is suitable for pure spinning and blending of various colored spinning yarns, ordinary and medium-long fibers.
The device is controlled by a control box to control a spinning frame. Yarn is generally in the range of 5 to 100 pieces. The variety that can be spun is arbitrary, regular, and the length of the shortest section is 25mm. The longest random, the shortest section of the color distance length 25mm, the longest random, the theoretical maximum thickness of 5 times.
The model of the matching spinning frame includes: FA502, FA 503, FA 504, FA 506, FA 507, FA1516, FA 513, FA 528, FA1218, FA129, and the like.
Fourth, ZND yarn yarn device detailed operation instructions (slightly
V. Spinning technology and important parameters
The trial production of Duan Caisha to successful production is a process of continuous improvement of equipment and processes. Through the modification of the feeding device of the spun yarn, the original draft from a roving feed was changed into two rovings fed respectively into the middle and rear rollers. Therefore, the biggest difficulty in spinning is that when the drafting force and gripping force do not match well, the appearance of the yarn will appear like a nep, which is a taboo for this yarn. In addition, the rovings fed by the middle roller are properly controlled to have a small degree of twist, so as to avoid incompatibility caused by single-side drafting.
Process flow
A Yarn: Polyester (1.5DX38mm) or Polyester/Viscose (1.5DX38mm)
Grab cotton machine → Open cotton machine → Rolling machine → Carding machine → Drawer → Roving machine → A rough → Feeding the spun yarn
B yarn: color polyester (1,5DX38mm) or modified polyester (1.5DX38mm)
Picking machine → Opener → Rolling machine → Carding machine → Drawer → Roving frame → B-Rough → Feeding after the spun yarn Roller → Color Coil → Winder
With the section color yarn device, confirm and design the important parameters of the segment color yarn process:
Important formula: (color length × thickness + color distance) / (color length + color distance) = original yarn / mixed yarn branch
The formula should pay attention to where the color length takes the average segment color length, and the average segment color distance.
The design of important parameters:
(1) Determination of thick or thick sections of paragraphs
a: Weighing method (torque balance): Use scissors to cut out a fixed length of colored bamboo (not including knots), weigh out, cut out a fixed length of original yarn, weigh out, and convert it into the same After the length, the division, you can get section rough parameters.
b: Comparison method: By actually spinning the result, compared with the sample, the comparison must pay attention to make the color, humidity and other similar and similar.
(2) Determine the length of festival section or section length:
The measurement method is mainly used to measure the lengths of multiple cutoffs from a single yarn sample or cloth, remove some of the same length, and then average them to obtain the average length of the section. The deviation range is then used as the formula (average color length). - the shortest color length) ÷ average color length or (maximum color length - average color length) / average color length.
Note: If the work and pitch measured directly on the cloth surface are compared with the actual results, an elongation should be considered. A specific method can pull out a bamboo section (pitch, section length). According to the length of the cloth surface and the actual length after pulling out, the elongation is obtained. At the same time, the elongation of pitch and pitch may not be the same.
(3) The determination plan for segment pitch:
The scheme for determining the pitch is basically the same as the scheme for determining the length of the section.
(4) The original (base) yarn determination plan:
Weighing method: Weigh one metre of base yarn and calculate the basis yarn count.
(5) The drafting scheme:
Draft value = number of rovings / number of base yarns if there is a deviation: can be calculated by the formula adjustment: actual draft = theoretical draft * theoretical draft spinning weight / required weight.
(6) The determination of transmission ratio:
For the determination of the transmission ratio, the transmission ratio of the servo motor to the middle roller is set; its size setting is mainly calculated according to the type of the spinning frame, and the general requirement is more than 16 or more. The transmission ratio of the servo motor to the rear roller; its size is also determined according to the type of spinning frame, but is generally a fixed value and does not need to be changed.
(7) The determination plan for the degree of freedom:
The design of the twist is based on the base yarn. Generally, it is based on the size of the length of the segment and the size of the thickness. The woven fabric is selected to have a twist of 380 or more; the knitted fabric is selected from 340 to 360.
(8) Determination of the traveler:
The selection of the traveler is generally determined between the mixed yarn support and the base yarn support, and finally determined by the actual tension balloon effect. The tension should not be too tight or too loose.
(9) The determination of the spacer block:
The choice of spacers should also take into account the difference between the mixed yarns and the segmented rovings.
Sixth, spinning process problems and solutions:
The spinning principle of segmented yarns has a very different distinction from the conventional spinning process. In fact, it is through the gap movement of the drafting parts of the spun yarn to achieve a thick and thin appearance of the yarn. So the drafting part of the yarn is changed as follows:
1. Install a roving frame and yarn guide device, install the bell mouth of the roller and matching sliders.
2. Change the conventional rear draft gear to artificially create a back roller phenomenon. Thus a fed roving is broken by the gap.
3. The rovings matching this are divided into A roving and B roving. Both are fed into the middle and back rollers of the spun yarn. The roving ration is about half that of the conventional roving.
4, for spinning some paragraph color length, segment color distance is very short section of color yarn, that is, paragraph color length or paragraph color distance ≦ 5CM (refers to the thickness of 2 times, such as thicker section, correspondingly longer) Next, the limit requirement is that the front roller speed cannot be greater than 200 rpm.
5, for some ultra-short section color section length (segment color length or segment length is significantly lower than the fiber length) spinning, due to the different types of fiber in the jaws are stretched, may lead to actual results and input parameters are large Big error. That is, the length of the segment is longer and the knot is not thick enough. At the same time, it varies with the thickness and length; it varies with the position of the jaws. All manufacturers should pay attention to this correction work.
6. All process parameters input of this device are calculated according to the standard theoretical process algorithm. Since the equipment models, vehicle conditions, and operating efficiencies of various manufacturers are all different, the actual results may have slight differences. The manufacturer must check and correct the color yarns produced, and take the actual results as the main factor.
7. In the case of non-spun yarn or long time parking, the power of the control box must be turned off. When the servo motor is in normal operation, the body temperature below 60°C is normal. Dust removal and maintenance are often required in the control box to avoid unforeseen problems.
8. The 220V power supply for servo motor should be taken from the main circuit of the vehicle power supply. Otherwise, if the vehicle is not normally closed, it may cause the yarn breakage of the vehicle.
The real point of spinning section yarns lies in how to grasp the dynamic management of the special process and equipment and how to do a good job in the operation management. Due to the characteristics of the segmented color yarn, it is a product with small batch size and many color variations. Therefore, the branch classification of the former spinning must be done strictly, and even the lower leg must be strictly controlled. Each color match is achieved on the sidelines, and it is necessary to strengthen the education of responsibility for the maintenance of the slip.
In the spinning process, it is necessary to strengthen the awareness of the shifters in quality and to walk around, especially to strengthen the inspection of the roving feed, to avoid the phenomenon of breaking A yarn or B yarn when A and B yarns are fed at the same time. Due to the fact that roller gaps are used to achieve the gap feed of the rovings, the impact gears may occur when the transmission gear is subjected to a large impact force. Therefore, the operators and maintenance workers must pay attention to the equipment that spins the yarn, and avoid breaking out the bad yarn due to bursting.
7. In summary, the process and production of segmental colored yarns have their own particularities, so be sure to pay attention to the type selection, and try to choose mature technology and quality assurance manufacturers. Pratt's ZND intelligent yarn color yarn device can be said It is a good choice.
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