CN202450207U - Device for yarn quality monitoring - Google Patents

Abstract

The utility model discloses a device for yarn quality monitoring. The device for yarn quality monitoring comprises an optical sensor, an arithmetic unit and a control instrument, wherein the control instrument is connected with the arithmetic unit through a bus and connected with a display and operation unit through another bus, and the display and operation unit can be a part of a spinning machine or a bobbin winder. A measuring gap is arranged on a measuring head, and a yarn longitudinally penetrates through the measuring gap to move for section detection. The optical sensor is used for scanning the surface of the yarn and giving out an electric signal, and the value of the electric signal belongs to a given graded range which is provided with a plurality of amplitude thresholds of signal sections of electric signals and a plurality of threshold values of length/lasting time. The arithmetic unit stores a plurality of threshold values and continuously compares the value of the electric signals with all the threshold values. The device makes sequencing between the yarn and various foreign matters and between the yarn and the electric signals to be possible, and can improve product quality and working efficiency.

Description

The device that is used for the quality of yarn monitoring

Technical field

The utility model relates to a kind of device that is used for the yarn qualities monitoring.

Background technology

At present, by a kind of device of known be used among CH-477573 yarn clearer, it can be used for the quality of yarn monitoring, will weed out above the yarn defect of certain boundary value.Meanwhile, yarn surpasses or also can be considered to a yarn defect less than its average diameter on certain-length.The yarn defect that is determined will not removed by a blade, and this yarn is connected again then.In order to control cutting knife, just stipulated so-called clearing boundary, measure all yarn defects according to this.All yarn defects are as long as it has surpassed the clearing boundary and will not remove through cutting knife.These clearing boundaries are by forming, and come on certain deviation and the yarn line segment through average diameter certain length to judge the yarn defect thus.Known clearing boundary has continuous perhaps discrete process (having intermittent).But it is usually during work, will not surpass diameter deviation big but the less yarn defect of its length do not fall, and the big yarn defect of length that deviation is little does not fall on the contrary.Be known that these clearing boundaries are arranged to the district that grades, the boundary of wherein grading is always not consistent with the clearing boundary.But certain such clearing boundary always is divided into two zones with space or a plane, and the zone outside the clearing boundary is used for the not yarn defect of tolerance definition, and the zone within the clearing boundary is used to have the yarn defect of tolerance regulation.

The shortcoming of knowing this known devices is, it spins the into foreign matter of yarn in addition with except the erratic behavior of yarn itself, disposes in the same way together with the vary in diameter of yarn, knows the thick or thin place of common yarn.This means that it can not distinguish fiber like impurity, housing, other color, hair, knotting or the like from the different foreign matter that occurs.Therefore, it also just can not optionally reject wherein a certain kind from foreign matter.These known devices are equipped with sensor, and it thinks the diameter that can record yarn line segment and quality and monitor the inhomogeneities of being seen yarn qualities therefrom or the inhomogeneities of the diameter on certain-length, perhaps also loosely discerns the foreign matter in the yarn.Usually from sensor, produce a signal of telecommunication, it joins on the yarn line segment, but it is difficult to whether obtain the foreign matter that certain is confirmed with uncertain signal of from yarn line segment, drawing.It can be recognized the existence of impurity but can't confirm the kind of its impurity.

There is not possibility to distinguish different classes of foreign matter in yarn and foreign matter and the yarn thus.Boll hull bits in the yarn are normally through reprocessing; For example chemistry is handled bleaching again it is removed from yarn; Because after this boll hull bits are being made into the later ten minutes of cloth obviously, often they are directly heaved in sight, and perhaps they perhaps do not have only color seldom and make it obvious in painted back.

The utility model content

The technical problem that the utility model will solve provides a kind of device that is used for the quality of yarn monitoring, and it can be counted yarn according to same levels classification or ten minutes easily.

For solving the problems of the technologies described above, the utility model provides a kind of device that is used for the quality of yarn monitoring, comprising: optical sensor, and an arithmetic element and a controller, controller links through a bus and arithmetic element; This controller links through another bus and demonstration and operating unit, shows and operating unit can be the part of certain spinning machine or bobbin winder; A clearance measurement is arranged on the gauge head, in this clearance measurement, yarn vertically passed along it and move and segmentation detects; Said optical sensor is used to scan the surface of yarn and provides a signal of telecommunication, and to the value of this signal of telecommunication given district that grades in advance, it has amplitude threshold values and the threshold values of a plurality of length/duration of the signal segment of a plurality of signals of telecommunication; Arithmetic element, said arithmetic element is stored a plurality of threshold values, and the numerical value and all threshold values of the continuous more said signal of telecommunication of said arithmetic element.

The beneficial effect of the utility model is: it makes one side between yarn and various foreign matter, and between the yarn and the signal of telecommunication, sorting on the other hand becomes possibility, can improve the quality of products, and increases work efficiency.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed description.

Fig. 1 is the sketch of the related device of the utility model;

Fig. 2 is by the sketch map of from device, drawing signal among Fig. 1;

Fig. 3 and Fig. 4 are respectively the histograms that grades;

Fig. 5 is the flow chart of the related method of the utility model embodiment;

Fig. 6 is the related schematic representation of apparatus of the utility model.

The specific embodiment

The utility model adopts optical mode that yarn is scanned through irradiates light; Be right after thus and obtain a signal of telecommunication thereafter; To the prior given district that grades of the value of this signal of telecommunication; It has amplitude threshold values and the threshold values of a plurality of length/duration of the signal segment of a plurality of signals of telecommunication, and this signal of telecommunication can compare with all threshold values then.Grade will form through the combination of four threshold values.Now just can confirm for each yarn line segment which grade it belongs to, and sets out thus, can confirm the kind of all foreign matters yarn from the grade attribute, after this, can be with yarn according to same levels classification or counting very easily.

The related device of the utility model is as shown in Figure 1, mainly is made up of with a controller 3 known 1, one arithmetic element 2 of a gauge head of version own, and controller links through a bus 4 and arithmetic element 2.This controller 3 links through another bus 5 and demonstration and operating unit 6, shows and operating unit can be the part of certain spinning machine or bobbin winder.A clearance measurement 7 is arranged on the gauge head 1, in this clearance measurement, yarn 8 vertically passed along it and move and segmentation detects.Gauge head 1 preferably has a measuring system 9, and it is limiting clearance measurement 7 and is especially adopting illumination light to come work through the optics appearance.This means, with this known mode with the light-receiving that reflects on the yarn to sensor, and convert thereof into the signal of telecommunication.This measuring system is known, and as more detailed description is arranged in patent application WO93/13407.

Shown in Figure 2 is a signal of telecommunication 10, and for example it obtains through lead 11 (Fig. 1) from gage outfit 1, and lead n interconnects controller 3 and gauge head 1.Signal 10 is demarcated through trunnion axis 514, and has indicated long measure, and it is relevant with yarn 8.On the vertical base parameter, for example indicated the numerical value of voltage.Signal 10 mainly is made up of the very little insignificant beat that the little inhomogeneities through yarn 8 surfaces causes.Can it be summed up as the noise category.Signal 10 is the center round zero line 12, and 13 what indicate is an outstanding deviation of signal, and it should be relevant with certain special incident, and this incident here is a boll hull layer, and for example it is attached on the fiber and spun in the yarn in the spinning process.The boll hull layer is the residue of the vegetable lamb of solid; (for example: the part of cottonseed or cotton seed hulls), their can be in process, and (for example weaving) done stay in the yarn in order to the shape that the utmost point is pulverized through mechanical load, its size 0.5mm that on average has an appointment; And its shape is complete, for example is.Point-like, this deviation of signal, such as producing in this reflection that weakens through described irradiates light, it is exactly because the dark colour of these boll hull bits of example button is caused.

Shown in Figure 3 is grade a district or the rectangle Figure 16 that grades, it has an axle 17, it not along length of yarn direction standard, also has an axle 18 with milli, standard be the beat value or the amplitude of the signal of telecommunication 10.Numerical value in addition is that catoptrical amount is indicated with percentage.The illustrated rectangle Figure 16 that grades demonstrates 32 zones 19, and it is limited straight line 20 to 24 and 25 to 33, and it is threshold values that straight line 20 to 33 is also represented, signal 10 compares therewith.An independent zone 19, the district 34 is especially here always limited on 4 lines, is straight line 21,22 here, and 28 and 29 or four threshold values limit, and the spacing between the straight line 20 to 24 can for example be 1 corresponding with the length of yarn 8.A district or one group of district, definition 34 here, and 34 ' and 34 " be the grade of deviation of signal, these deviations are for example just representing in yarn, to exist the leaf of cotton or the residue of bar.

Shown in Figure 4 is the district 16 that grades still, has filled out district 35 therein, and it relates to these length and the beat of signal 10, and it is used to describe boll hull and considers to be worth doing.And then the signal of in district 35 ', arranging indicates is the jute residue the during packing of removing not at present.These jute residues resolve into fibrous usually.

Shown in Figure 5 is the flow chart of the related method of the utility model.Should explain downwards successively according to the working method of device shown in Figure 1 according to this.This method for example begins by the girl through the startup of depressing on the operating unit 6, and it marks through 36.Controller 3 herein for example can be made up of computer (Pc), program is called in the processor of data processing unit 2, begins measuring process 37 then.

When the yarn of a hop count rice length passes clearance measurement 7 motions, carrying out measuring process 37.Its purpose is the measured value of the yarn 8 that at first obtains is known its reverberation, calculates mean value thus and add zero line 12 (Fig. 2) above that.After this just begun real measurement, continuous yarn measures 38.

Yarn 8 is passed clearance measurement 7 and produces signal 10 (Fig. 2) by drawing in continuous yarn measurement 38.The numerical value that this signal 10 occurs through scanning ray reflection periodically continuously and in gauge head 1, producing.When yarn 8 is passed by such as 2mm, just obtain a measured value again, and it will just compare with all straight line 20 to 23 described numerical value that pass through with all threshold values of distinguishing in 16 that grades from measure crack 7.The identification of Here it is deviation of signal 39 and in the arithmetic unit of arithmetic element 2, carrying out.But the program in the arithmetic unit also has other set-point.When threshold values has especially exceeded corresponding straight line 28 or 30, then its corresponding signal segment just is read in the memory of arithmetic unit and is retained the up-to-date numerical value that on other direction, exceeds straight line 28 or 30 until the next one.The length on Fig. 3 axle 17, indicated with it of the time that these numerical value stay in memory is corresponding and on threshold values, measure then, and these threshold values are through 21 to 24 descriptions of straight line.Such as a signal segment is arranged, it does not exceed threshold values according to straight line 31 but has exceeded straight line 32, and it one is waited until in memory, cuts off from but does not exceed 23 as long as it exceeds by straight line 21 and 22, and it is promptly divided to wait until the yarn defect of distinguishing in 34.Know that fruit found such fault, it goes on record, but activate counter for example thus, and it is the fault counting that adds in the district 34 or make and follow the cutting knife action that is provided with after the gauge head 1 closely.In these processes, step 40 has been accomplished record, and step 41 item has been participated in counting, and then 42 these processes of expression of returning are constantly and measure rhythm for each scanning or each and all be repeated.

Can further confirm other foreign matter according to graduation back deviation of signal.So just can set out thus, the less foreign matter of light contrast of those relative yarns or their light source of relative exposure is classified as in very little grade of corresponding deviation of signal or the zone go.In Fig. 3, the for example corresponding zone that is between axle 17 and the straight line 28.Can be referred to as light polypropylene as an example, it produces from packing.The signal of some foreign matter has correspondingly produced very big contrast, is in the zone between straight line 25 and 27, can be summed up as the for example cloth detritus of very strong color.

Shown in Figure 6 is a view of the related device of the utility model, and gauge head 42 is used to discern foreign matter on this device, it directly be contained on the spinning machine or bobbin winder on.Yarn 8 its by around to bobbin 43 before very near-earth side pass gage outfit 42; Through lead 44 gage outfit 42 and arithmetic element 45 are linked, arithmetic element 45 and then link through a bus 46 and center control, operation and a display unit 47 that is used for many gage outfits.Just can form or kind at the foreign matter that occurs on certain yarn line segment discerned on the spinning machine or on the bobbin winder with this device of this employing, and they distinguished according to the signal that obtains from gage outfit.

The utility model is not limited to the embodiment that preceding text are discussed.More than the description of the specific embodiment is intended in order to describe and explain the technical scheme that the utility model relates to.Conspicuous conversion or the alternative protection domain that also should be considered to fall into the utility model based on the utility model enlightenment.The above specific embodiment is used for disclosing the best implementation method of the utility model, so that those of ordinary skill in the art can use numerous embodiments of the utility model and the purpose that multiple alternative reaches the utility model.

Claims (1)

1. a device that is used for the quality of yarn monitoring is characterized in that, comprising:

Optical sensor (1), an arithmetic element (2) and a controller (3), controller links through a bus (4) and arithmetic element (2); This controller (3) links through another bus (5) and a demonstration and operating unit (6), and demonstration and operating unit can be the parts of certain spinning machine or bobbin winder; A clearance measurement (7) is arranged on the gauge head (1), in this clearance measurement, yarn (8) vertically passed along it and move and segmentation detects; Said optical sensor (1) is used to scan the surface of yarn (8) and provides a signal of telecommunication (10), and to the value of this signal of telecommunication given district that grades in advance, it has amplitude threshold values and the threshold values of a plurality of length/duration of the signal segment of a plurality of signals of telecommunication; Arithmetic element (2), said arithmetic element (2) is stored a plurality of threshold values, and said arithmetic element (2) constantly numerical value and all threshold values of the more said signal of telecommunication.

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