CN1034595C - Method for controlling yarn storage and feeding device, and yarn storage and feeding device - Google Patents

Abstract

The present invention relates to a yarn storing and feeding device exclusively used for a weaving machine and a control method thereof. The yarn storing and feeding device comprises a storing surface and a control system, wherein a yarn ball can be wound on or unwound from the storing surface by a using device, and the control system enables a winding transmission mechanism to adjust the winding speed according to the yarn consumption. The actual yarn ball number on the storing surface is adjusted to enable the actual yarn ball number to be close to a predetermined ideal value changed according to at least one change of the winding speed. A control device and a reference value storing device output the ideal value changing in a predetermined state, and thus, the yarn on the storing surface is supplied in a proper small quantity.

Description

Yarn stores the control method and the device thereof of feed unit

The yarn that the present invention relates to the loom special use stores the control method of feed unit and the yarn storage feed unit of a loom special use.

Adjust according to predetermined ideal value and the difference of actual yarn coil number on storage surface according to EPB10174039 yarn winding speed.In the case, difference one on the occasion of with the limited range of a negative value in change.Ideal value is for can satisfy the desired yarn number of turns of average consumption amount.In the case, the combination of low winding speed and low average consumption can form a suitable yarn supply, yet does not require same yarn supply at high-speed winding speed Shi Que And.Reach between winding speed and the average consumption under the situation of poised state, when higher winding speed, owing to running up of coiling transmission mechanism, when the yarn consumption amount increased, the yarn supply was than replenishing with faster speed when low speed is reeled.Usually, not wishing has excessive yarn supply, particularly when high-speed winding, may be wound on danger on another yarn circle because this has increased the yarn circle.Work as the yarn supply simultaneously and be increased to a unwanted quantity, consumption changes. and during change, winding speed must be deacclimatized new poised state by one long period.Too high in addition speed has caused the unnecessary increase of the mechanical stress that acts on the yarn, especially in the yarn feeding side, produces the danger of yarn breakage.Also because during further excessive increases of yarn supply, under yarn consumption amount reduction situation, the yarn supply will be from further excess ground increase on the excessive basis, and when the yarn feeding of excess, a large amount of yarn number of turns can hinder the yarn supply.The yarn supply of temporary transient hypervelocity and very big excess also causes unnecessary energy consumption.

The purpose of this invention provides a kind of control method of yarn storage feed unit and is that a yarn realizing the method stores feed unit, thereby can guarantee to occur at storage surface the yarn supply of optimal dose.

Utilize the yarn storage feed unit and the control method thereof of loom special use proposed by the invention just can be easy to achieve the above object.Yarn store feed unit comprise one thereon yarn coil also can use back off the from it storage surface of yarn circle of device, a coiling transmission mechanism by a yarn; Control system can be adjusted winding speed according to the yarn consumption amount and the actual coiling number of turns that is wound on the above-mentioned storage surface, thereby adjust yarn number of turns amount, make it reach predetermined ideal value, this method feature is that ideal value will change according to winding speed variation at least once.

Under higher winding speed, the coiling transmission mechanism can with replenish than faster speed under low winding speed the yarn feeding amount to necessary amount to adapt to the increase of consumption, can not cause that yarn feeding exhausts fully.So when higher winding speed, the yarn supply just can be than being little when the low winding speed.The corresponding change of ideal value has just taken place in this.When consumption reduced, ideal value changed thereupon, stoped the unnecessary increase of yarn supply.Selected ideal value is adjusted to consumption effectively with the yarn supply and is reduced the desired minimum in back.Ideal value situation of change or variation formula determine according to the characteristic of coiling transmission mechanism that at least partially the transmission mechanism characteristic can be represented with a known characteristic curve that is applicable to specific device.This characteristic curve for instance, can be the accelerating curve of coiling transmission mechanism.It also is no less important that the characteristic of consumption changes ideal value.Variation is from default, and yarn stores feed unit and uses device to match with yarn in advance, makes it can guarantee reliable yarn supply under various operating conditions.The variation of ideal value is crucial when running well not only, and in the incipient stage, important too when running status is reduced to halted state, because in those states, ideal value exceeds the speed limit, stops the yarn supply in operation phase formation excess to play an important role to stoping.For a consumption arbitrarily, the yarn supply is reduced to suitably big young pathbreaker produce various benefits.At first, adjusted yarn supply has reduced the danger of yarn circle on another yarn circle, and the resistance opposite with the yarn direct of travel reduce greatly; Next has reduced the maximal rate of coiling transmission mechanism, because if the yarn supply does not reduce to suitable size, and when consumption increases, just very fast raising of winding speed, thus formed unwanted too much yarn supply when high winding speed.Owing to avoided this situation, reduced the mechanical stress that acts on yarn, especially at supply side, thereby also reduced yarn at this regional risk of breakage.The sort of in the past also unnecessary in order to adjust winding speed inevitably back and forth with the consumption balance, because winding speed can be adjusted with consumption in phase by means of ideal value.Exempting adjusting back and forth makes suitable poised state can reach soon.Reduce to when adapting with consumption when winding speed, the supply of yarn is complementary with consumption immediately, and this is because adapt in the consumption process without any change the adjustment that significantly swings back and forth that causes because of ideal value at winding speed.In a word,, improved the quality of thread feed process, saved the harm that energy ， And has reduced defective mode according to the structure that the method and the yarn of invention stores feed unit.

Ideal value automatically becomes inverse change with winding speed, can obtain appropriateness yarn in a small amount in simple mode in all cases.Under a given poised state, winding speed is higher, and the yarn feeding amount is littler.The variation of ideal value is automatic generation, so do not need to be intervened.

Ideal value becomes inverse change with winding speed at least on a default winding speed, because need bigger yarn supply when low winding speed, and when the amount of increasing consumption, coiling Chuan motivation Gou Only can replenish supply with speed slowly.

The ideal value starting quantity is to be based upon on the actual concepts, and promptly the coiling transmission mechanism that starts down from stop condition needs the long relatively time reach necessary yarn supply under the situation that consumption increases.Starting quantity can be the ideal value when adapting to minimum winding speed, yet, also it is contemplated that and select a higher initial numerical value.Ran Hou Only have reached a predetermined winding speed or reached a poised state after, begin to adjust winding speed according to the variation of ideal value.Starting quantity also needs when beginning to form yarn feeding.When adopting the average consumption constant of a known reality, in company with ideal value variation at least once, purpose also can reach.Here it is, offers at least one ideal value different with initial number of control system, and And and known average consumption are complementary, thereby guarantee the appropriateness yarn feeding in a small amount to this average consumption, and it is littler when being in the incipient stage.When transmission mechanism has reached poised state after starting, corresponding ideal value, perhaps or rather, the variation of ideal value begins to play the effect of control.In the case, the swing that it can suppress to adjust is because after leaving initial value, because winding speed and ideal value are complementary and can adjust winding speed immediately.

Initial numerical value (n _ST, n _{ST '}) determine according to the operation characteristic of coiling transmission mechanism, at first consider to adapt with its acceleration, perhaps determine according to a special consumption, pay the utmost attention to consumption peak.

Ideal value (n _V) change adaptably with winding speed, or perhaps its function.Controlling winding speed by ideal value is to keep appropriateness effective assurance of yarn feeding in a small amount forever, the winding speed control procedure enters correlated state simultaneously, its result not only makes the mechanical stress that acts on the yarn be restricted, and the yarn tension variation of supply side is restricted.

Ideal value (n _V) just as a function of coiling transmission mechanism acceleration characteristic.The characteristic of coiling transmission mechanism accelerating curve is a very useful starting point of the different ideal values of decision.This is to be to be that acceleration or deceleration are determined according to winding mechanism to a great extent because yarn feeding is increased or reduce.Therefore, the actual diameter of storage surface (it is adjustable), and quality of yarn all only is less important.

Ideal value also can begin to determine according to known average consumption that just, ideal value both can also can be decided by rule of thumb by calculating from initial value, and And offers control system to use with it in operation process.

Different ideal value (n _V1, n _V2) and selected winding speed (V ₁, V ₂) relevant, in order to adapt to selected winding speed, control system receives the information of some ideal values, and it is compared with the information of actual value, and winding speed just increases according to this information comparative result or reduces.This way can play good control action.For adapting to another selected winding speed, this information repeats more again.The frequency that repeats is according to the given operating condition decision of reality, and this frequency can be selected for use higher, or lower.For example, in control system, select frequency with adjustable clock pulse generator.

By means of the information that repeats relatively, winding speed obtains adjusting to adapt with ideal value in a closed control loop.Each ideal value all is according to isolated plant characteristic or consumption characteristics chosen in advance, and so-called actual value is then determined by the yarn circle of yarn coil or consumption; Ideal value is as a reference being arranged closed control loop, can bring into play good control action.

The yarn of foregoing loom special use stores feed unit, and the function of control rate is about by the reference value memory, and And reach the yarn supply that keeps the appropriateness a small amount of when any winding speed.Because control system is to be handled by ideal value,, equally also avoided the unnecessary increase of yarn supply when consumption reduces so avoided winding speed too being increased for adapting to the consumption increase.Like this, the mechanical stress that acts on the yarn keeps minimum.In different winding speed scopes, the appropriateness of yarn feeding is not changeless in a small amount, and this has just been avoided fully, and yarn exhausts fully when consumption increases.

The ideal value that the reference value memory of above-mentioned yarn storage feed unit provides according to reducing with the corresponding ratio of the accelerating curve of coiling transmission mechanism, can think perhaps that it is a function of accelerating curve along with the increase of winding speed (V).Coiling transmission mechanism accelerating curve is known reference curve, and it all is useful to calculating with definite ideal value.

Yarn stores on the feed unit microprocessor and detector is installed.Microprocessor is arranged in the control system, and detector provides the information of yarn coil number, the consumption yarn number of turns and at least one ideal value to control system.Microprocessor for example when the counting yarn coil, is reported actual value in process like the continuous phase.Under certain condition, it can also be by means of several, and preferably three yarn detectors monitor that directly storage surface measures real quantity, thereby provide a very approximate information for control system.Microprocessor in the control system is being undertaken auxiliary function.For adapting to ideal value, winding speed adjusts like this: when winding speed was higher, the ratio that the yarn feeding amount reduces was faster than the ratio that replenishes yarn feeding when speeding up.Simultaneously, under the situation that consumption reduces, microprocessor guarantees not make yarn feeding that extra increase is arranged.

Ideal value is stored in the tabular memory, its storage location is read pointer by one and is read, this pointer can carry out self-regulated according to winding speed, and the sheet format memory stores a series of ideal value, has in fact formed the change curve of an ideal value.Adjust and read pointer, at any time can only read a corresponding ideal value according to winding speed, the information that this is obtained is sent to control system then.It is more unsophisticated this device to be used the increasing of the spacing between the ideal value, and it only relates to selected winding speed and the effectively variation of ideal value.Under the situation of known average consumption, a simple steps just can achieve the goal, and exactly the ideal value that adopted and the recruitment of yarn feeding is complementary.

A kind of pattern that changes that above-mentioned yarn stores feed unit is that the yarn detector that an energy is adjusted at the storage surface length direction is housed thereon, and is connected with the adjusting transmission mechanism, and this mechanism can correspondingly adjust yarn detector according to winding speed.The ideal value of this pattern changes approximate continuous.Because yarn detector is adjusted according to the length direction of winding speed at storage surface, this adjustment causes ideal value to change, and makes control system have the function of regulating winding speed.

The another kind variation pattern that above-mentioned yarn stores feed unit has two above yarn detectors, and they distribute and the sensing storage surface along storage surface, and is connected with control system.Each yarn detector is installed in predetermined ideal and is worth on the corresponding position, and converter is then selected a corresponding yarn detector according to winding speed.Automatically being transformed into another detector from a yarn detector makes new ideal value become effectively.Consequently formed an ideal value broken line, broken line is to decide according to the quantity of yarn detector.In any case this is very satisfied, particularly has under a large amount of detector situations better effects if.Space between each yarn detector can be adjusted individually, does not need to select identical interval.

Also can control ideal value by method for distinguishing changes, at the storage surface length direction broadband type yarn detector is set, preferably with a kind of light-sensitive element that is called CCD, perhaps with a kind of photoelectric tube row, the active probe parts that have a length to limit at its length direction, it move of electricity consumption subsystem controls in wide area detection scope.So just can control the variation of ideal value.A kind of method of having simplified also can reach this purpose, a broadband detector is set exactly, and have one and can move and the movable span that can locate at length direction, wideband detector is monitoring storage surface along with the variation of winding speed and is moving there, thereby has changed ideal value.

And selected, this point is very important with uniform interval for winding speed, because help obtaining stable adaptation control with the selected winding speed in uniform interval.

Because than faster than low velocity the time, it is changing with the non-linear ratio the additional yarn feeding ability of coiling transmission mechanism when fair speed, in a series of ideal value, effectively the spacing size between the ideal value increases along with the increase of winding speed.In low winding speed scope, spacing is relatively littler between the ideal value, and in higher winding speed scope, the spacing between the ideal value is just big relatively certainly.

One code-bar switch is arranged in the referential data memory, and the there ideal value is to be adjusted on the known average consumption, preferably is in a kind of adjustable state.This is a kind of foolproof structure, make the ideal value that adapts to known average consumption be transported in the electronic control system with the ten minutes plain mode, ideal value can be adjusted separately and automatically controlled system accepts and application, with when running well, keeps desirable a small amount of yarn feeding.

Store the structure of feed unit according to method of the present invention and yarn, the yarn supply can be reduced to suitable size, reduced the danger of yarn circle on another yarn circle, reduced the maximal rate of coiling transmission mechanism, reduced acting on yarn especially in the mechanical stress of supply side.Therefore, improve the quality of thread feed process, saved energy, and reduced the harm of defective mode.The enforcement of main body of the present invention will be illustrated with the example that accompanying drawing is discussed.

Fig. 1 is the side view that yarn stores feed unit.

Fig. 2 represents the development figure of ideal value.

Fig. 3 represents ideal value development and change figure.

Fig. 4 is coiling transmission mechanism acceleration characteristic or the rate curve schematic diagram that yarn stores feed unit.

Fig. 5 represents that yarn shown in Figure 1 stores feed unit schematic diagram when a certain operating condition.

The schematic diagram of Fig. 6 presentation graphs 1 shown device when another operating condition.

Fig. 7 has represented a kind of variation pattern.

Fig. 8 has represented another kind of variation pattern.

In Fig. 1, the yarn 2 that yarn stores feed unit 1 is to be supplied with by a bobbin (not shown), is wound on the fixing storage surface 6 by means of the form of winding element 4 with yarn circle W through leading-in end 3.The yarn circle that forms yarn feeding is made as " n ".By output 7, yarn 2 is unloaded by the free end that uses device loom c from storage surface 6 and takes off.Winding element 4 is being rotated with winding speed V by coiling transmission mechanism 5.Be connected with control system 8 during the transmission mechanism running.The signal that sniffer 9 shown in latter's acceptance pattern and detecting element 10 send.

Sniffer 9 (for example Hall element) can be monitored winding element 4, thus when winding element 4 or yarn 2 is other through it just once pulse be sent to control system 8, each pulse is just as representing a yarn circle W.Equally, when yarn 2 debatchings, during the next door of yarn 2 every process detecting elements 10, detecting element 10 also can send pulsatile once.By the comparison of these signals, control system 8 can be determined the quantity of actual yarn circle W on storage surface 6.Can believe sniffer 9, detecting element 10, at axial length, and provide corresponding message context to control system 8 at the quantity of determining yarn circle W or yarn, comparatively speaking, be very near real conditions.

Control system 8 is complementary winding speed V and yarn consumption, so after average consumption and winding speed reached poised state, the length of the yarn 2 of time per unit on the storage surface 6 (for example rice/minute) length of yarn with debatching from it exactly was consistent.When yarn 2 is the weft yarn of using on the loom, the operational mode of loom has been determined an average consumption, because weft yarn is debatching (well-regulated change color or plain weave) under well-regulated short or long interval state, or debatching (irregular fabric tissue) under irregular short or long interval state.Send the latitude cycle at each, the acceleration of weft yarn and deceleration acceleration or the deceleration more represented than the accelerating curve of transmission mechanism 5 is greater, control system 8 adapts with following mode and average consumption, promptly when sending the latitude period frequency high, transmission mechanism 5 moves continuously with a high relatively speed; When sending the latitude period frequency irregular or low, be continuous too, but move that when average consumption changed to some extent in operation, control system 8 was correspondingly adjusted winding speed until reaching poised state again with the speed of corresponding reduction.Keep this balance shape attitude And not need each cycle all to remove to change winding speed, because adjusted winding speed enough makes yarn feeding that replenishing of appropriateness arranged in sending the interval of latitude between the cycle.

Because under the state that a higher consumption and higher winding speed balance each other, yarn feeding replenish than at one than faster under harmonic(-)mean consumption and the low winding speed situation, control system is operation as follows just: the yarn feeding amount is corresponding reducing when winding speed increases, and will guarantee that simultaneously the yarn feeding amount must not drop into when moving below the requisite consumption.

Yarn at Fig. 1 stores in the feed unit 1 the quantitative value n of the desirable yarn circle W on storage surface 6 _VV changes according to winding speed, as shown in Figure 2, and ideal value n _VReduce along with the increase of winding speed V, reduce along with winding speed simultaneously and increase, the graph of a relation of this winding speed V and yarn circle W quantity has been represented the curve 11 of an ideal value being depicted by several points 12, and And is from an ideal value n _STExtend along arc left.Ideal value n _STBe an initial value of establishing according to the acceleration characteristic of transmission mechanism 5, or an initial value of establishing according to consumption peak, consumption peak refers to when winding speed is zero and can just prevent the quantity that yarn feeding exhausts fully here.Initial value also can be the bigger n as representing in Fig. 2 _{ST '}, in the case, control system 8 thinks that the ideal value on the curve 11 has just surmounted fixed winding speed value; The operation of controlling transmission mechanism 5 simultaneously also only surmounts corresponding winding speed value, then according to curve 11, makes yarn feeding reach predetermined low capacity by the point 12 ideal value adjustment of making.Under above-mentioned situation, the yarn number of turns is adjusted to initial value n for making control system _{ST '}, an initiating detector ST as shown in Figure 5 can be set on the device, this initiating detector only just participates in control operation at the initiating state or when yarn feeding begins to be wound on the surface.

Curve shown in Figure 3 is similar to Fig. 2, yet has only the point of three default ideal values on it, and promptly 12 _F1, 12 _F2, 12 _F3, form incoherent broken line 11 '.This broken line 11 ' on, ideal value can guarantee equally to reduce along with the increase of winding speed the yarn feeding amount.Fig. 3 also demonstrates the possibility that ideal value changes, from initial value n _STBeginning is simply to be cross over lower ideal value n once going on foot _CShown in situation under, vertical line (dotted line) is being represented according to the actual average consumption and is being adjusted the ideal value that obtains, thereby guarantees when this consumption the yarn feeding amount that keeps minimum.Though adjusted ideal value n shown in the figure _CBe when winding speed is zero, but just behind the initiating state, just according to ideal value n _CControl operation, so the swing of in fact just having avoided control to adjust.This simple solution is very effective, for example just embodies during changes colour in weaving process.Ideal value n _CBe directly to offer control system 8 by using a code-bar switch, in the case, ideal value can be individually before control system is handled, automatically adjust.

Curve 11 among Fig. 2 is to derive from characteristic curve shown in Figure 4.The latter is an acceleration characteristic curve that has the transmission mechanism of special driving motor.As shown in Figure 4, it is precipitous relatively that accelerating curve seems when beginning to rise, and smooth gradually then 6250 rev/mins of the maximum (top) speeds that reach are about as much as 500 meter per seconds.The shape of the curve 11 among Fig. 2 can determine that curve 11 only is the digital function of curve 13 according to the shape of curve among Fig. 4 13.

Fig. 2 represents: the ideal value of the yarn number of turns W on the storage surface 6 reduces a little at low winding speed Shi Only, and ideal value reduces degree when higher winding speed has increased.Curve 11 or 11 ' on the point of representative ideal value can be also can be to determine by rule of thumb as calculated.

Fig. 5 and Fig. 6 have illustrated under the normal operation condition that when the two kinds of operating conditions yarn of Fig. 1 stores the method for operating of feed unit 1.Average consumption and winding speed all are in the state of balance under every kind of state, that is, be wound on the yarn number of turns of the unit interval coiling on the storage surface 6 and the yarn number of turns of unit interval debatching and match.

As shown in Figure 5, transmission mechanism 5 and winding element 4 are with winding speed V ₁Rotate.The detector 10 of monitoring consumption is connected with control system 8 by lead 14.Sniffer 9 comprises one and monitors that winding element 4 detection of motion Qi ， And are defeated by control system 8 by lead 15 with corresponding information; Relevant winding speed value V ₁Information by also input control system 8 of lead 16.This information can be sent from sniffer 9, or sends from transmission mechanism 5, sends into control system 8 by lead 17.Control system 8 comprises a microprocessor MP, and it can determine the actual yarn number of turns from the information of input.

Control system 8.Have a sheet format memory in other words in the microprocessor, storing the ideal value in the preset range, represent with figure 19 (conforming to) with Fig. 2 curve.Chain-dotted line 20 expression among Fig. 5 with sheet format memory 18 the reading pointer.Can winding speed be adjusted to and be scheduled to the predetermined reading range in the sheet format memory 18 according to winding speed and adapt, for example, winding speed is V ₁The time, ideal value n _V, just be transfused to microprocessor MP.Because microprocessor is compared the information of input, just can determine whether actual quantity meets ideal value n _V1, n _V1Be illustrated on the storage surface shown in Figure 56, be in the axial location of last yarn circle of yarn.If relatively the back result is zero or within the margin of tolerance that allows, then keep original winding speed.On the contrary, information having a long way to go after relatively, control system 8 just makes transmission mechanism 5 quicken or slows down, and adjusts actual value and draws close to ideal value.Under a clock pulse generator control that is connected with microprocessor MP, this information comparison is repeatedly being carried out with predetermined interval.

Under state shown in Figure 6, the information comparison is carried out under higher winding speed, for adapting to this speed, reads a less ideal value from the sheet format memory.In this figure, can find out, at winding speed V ₂The time, the yarn feeding amount than shown in Figure 5 be little.

If the result of information comparison is zero, or the numerical value in Measurement Allowance, just keep original speed.If gap surpasses allowed band, control system 8 just go to adjust winding speed to higher or than the further comparison information of low value ， And so that actual value and ideal value are identical.In a word, control system is controlled winding speed according to ideal value, thereby keeps appropriateness yarn feeding in a small amount.The control operation is to carry out in a closed control loop, and ideal value is the operating reference value of control.

Fig. 7 represents, parallel with storage surface 6, make parallel mobile close limit yarn detector 23 with an energy along storage surface 6 along the guider 21 that its length direction extends, yarn detector 23 links to each other with power transmission shaft 22, the latter is connected with adjustment transmission mechanism 24 again, pilot 25 is by control system 8 or directly come controlling organization 24 according to the winding speed of coiling transmission mechanism 5, and at this moment, the distance in yarn detector 23 and guider 21 inner ends is actual winding speed V ₂Function.When winding speed increased, yarn detector moved towards the inner end of guider 21; When the winding speed reduction, yarn detector is done oppositely to move.The winding speed of control system 8 control winding elements 4 makes it the state that reaches following, promptly yarn feeding be adapted to forever one with the ideal value of respective roll around speeds match, the yarn feeding amount is decided by the actual range between the inner end of detector 23 and guider 21.

According to the enforcement of Fig. 7, control operation is to carry out on the ideal value that changes and approximate actual value basis, and is similar to Fig. 5, situation set forth in fig. 6.

Importantly: the relation of adjusting transmission mechanism 24 and not being with a linearity makes yarn detector 23 displacements, but along with winding speed increases with the speed accelerated to the displacement of the inner end of guider.

Embodiment among Fig. 8 be according to Fig. 3 middle polyline 11 ' figure operation, guider 21 has three detector F on the length direction that is parallel to storage surface 6 ₁, F ₂And F ₃A converter 27 is set with three the control shunt 26 of control system 8 with control line 26 ₁, 26 ₂With 26 ₃In one couple together selectively.Control line is controlled converter 27 selectively according to the winding speed of transmission mechanism 5 for 28 jiaos, so at any time, and detector F ₁, F ₂And F ₃In have only one being connected with control system 8.Converter 27 makes yarn detector F when winding speed increases ₁Be transformed into F ₂, then to F ₃As shown in Figure 8, at winding speed V ₂The time, yarn detector F ₂Work.Yarn detector F ₂The controlled system 8 of the signal that sends utilizes, and makes last yarn circle of yarn feeding according to the ideal value n that is complementary with winding speed _V2Remain on yarn detector F ₂The zone in.In order to make device adapt to various operating condition, yarn detector can individually be adjusted along guider 21.Be provided with than three more yarn detectors and can obtain good ideal value gradient.

It also is feasible that a fixing wideband detector is set, preferably adopt light-sensitive element or the photoelectric tube of a kind of CCD of being called to be listed as so that monitor yarn feeding substantially, or most of And electricity consumption subsystem controls wideband detector of supervising device output at least, its active probe parts are moved in investigative range, and to be that yarn feeding is corresponding when winding speed increases reduce in its design.The movable span in mobile broadband detector the place ahead also can reach corresponding effects.

As mentioned above, reach under the state of balance at consumption and winding speed, required yarn feeding amount is to reduce along with the increase of winding speed, because coiling transmission mechanism ratio when higher winding speed replenishes yarn feeding quickly when hanging down winding speed.Determine the yarn supply by ideal value, and reduce or change ideal value according to winding speed, these processes can be finished by the control system Electronic Control.Also can finish with half mechanical mode by means of corresponding adjustable or selectable detector.

Claims (15)

1. the yarn of a loom special use stores the control method of feed unit, and yarn stores feed unit and comprises that a large amount of yarn circles of reeling also can use intermittently back off the from it storage surface of yarn circle of device by a yarn thereon; The coiling number of turns that is wound on the above-mentioned storage surface that coiling transmission mechanism control system can go out according to the consumption and the actual detected of yarn is adjusted yarn circle winding speed, thereby the quantity of adjusting the yarn circle reaches predetermined ideal value; It is characterized in that: the information of supplying with said control system is actual reel for yarn pitch of the laps number on the variation of winding speed, winding speed, the yarn storage surface; Control system comprises the means that change ideal value by winding speed; Use above-mentioned means, ideal value becomes inverse change with winding speed, and promptly ideal value diminishes along with the increase of winding speed, along with winding speed reduces and becomes big.

2. the yarn of a loom special use stores feed unit, yarn storage surface (6), a coiling transmission mechanism (5) and a control system (8) that a yarn coil (W) is arranged, coiling transmission mechanism (5) is wound on the yarn storage surface by yarn coiler (4) with the yarn circle, and control system is according at least one the desirable yarn number of turns (n _V, n _ST) control the lifting of the winding speed (V) of coiling transmission mechanism (5); It is characterized in that: above-mentioned control system (8) comprises reference value memory (18,23,36), the ideal value that a plurality of numerical values recited do not wait is stored in wherein, ideal value becomes inverse change with winding speed, bigger ideal value is relevant with lower winding speed value and vice versa, if winding speed raises then less ideal value can be sent to control system from the reference value memory, if winding speed reduces then bigger ideal value can be sent to control system from the reference value memory.

3. as the method in the claim 1, it is characterized in that when winding speed changed, ideal value changed automatically.

4. as the method in the claim 1, it is characterized in that, be provided with predetermined minimum winding speed in the control system, ideal value changes by being varied to inverse relationship with winding speed, and winding speed is greater than predetermined minimum winding speed.

5. as the method in the claim 1, it is characterized in that, the initial yarn number of turns is arranged at control system as minimum of a value, and begins the characteristic of the several reportedly actuation mechanism of yarn coil and/or yarn consumption is done to become inverse relationship to change with winding speed from initial numerical value, or has a variation that goes on foot at least.

6. store feed unit as the yarn in the claim 2, it is characterized in that, above-mentioned reference value memory (18,23,36) ideal value that provides is along with the increase of winding speed (V), the ratio that adapts according to the accelerating curve (13) with the coiling transmission mechanism and reducing can think that perhaps it is a function of accelerating curve (13).

7. store feed unit as the line yarn in the claim 2, it is characterized in that, have microprocessor (mp) and detector in the control system (8), detector is that control system (8) provides the information that yarn coil counts information, yarn circle consumption and the ideal value of at least one winding line number of turns; Microprocessor (mp) has a readable memory, is storing the ideal value that is associated with different winding speeds, and can read an ideal value by corresponding any selected winding speed from memory; Microprocessor (mp) can be determined the actual yarn number of turns (n) from information, and the actual yarn number of turns and the ideal value of reading are made comparisons to adjust winding speed (V).

8. store feed unit as the yarn in the claim 7, it is characterized in that ideal value is stored in the tabular memory, different address values is read by the pointer of regulating according to winding speed information.

9. store feed unit as the yarn in the claim 2,6 or 7, it is characterized in that the smallest ideal value is as initial value (N _ST) be decided by yarn consumption in the characteristic of transmission mechanism and/or the running, initial value is stored in the reference value memory (18,23,36), it is the minimum lower change point of ideal value, initial ideal value is decided by the characteristic of transmission mechanism, further be to be decided by accelerating performance and/or maximum yarn consumption amount, and set thus.

10. store feed unit as the yarn in the claim 2, it is characterized in that, control system has a closed control loop, this closed control loop is with instantaneous actual value and relatively adjust winding speed repeatedly according to equipment energy characteristic and previously selected each ideal value of yarn consumption, the actual yarn number of turns that is used for reeling on the storage surface of comparison is decided by the coil number wound thereon and the coil number of consumption, and when the actual yarn number of turns is corresponding to ideal value to find.

11. the storage feed unit as in the claim 2 is characterized in that, yarn storage feed unit has the yarn detector (26) more than two, and they distribute and sensing storage surface (6) along storage surface (6), and links to each other with control system; The lengthwise location of detector has determined the yarn number of turns ideal value of preliminary election, and the converter on the device (27) is selected a detector job in the detector and other detector is not worked with the variation winding speed of measuring by preliminary election.

12. as the storage feed unit in the claim 2, it is characterized in that, yarn stores feed unit (1) yarn detector (23) that can adjust at storage surface (6) length direction is housed, this detector links to each other with length adjustment transmission mechanism (24), this length adjustment transmission mechanism links to each other with control system, can adjust the position of yarn detector at length direction according to the variation of winding speed.

13. as the storage feed unit in claim 2 or 6, it is characterized in that, length direction at storage surface (6) is provided with a width type yarn detector, preferably use a kind of appellation CCD light-sensitive element, perhaps with a kind of photoelectric tube row, at the active probe parts that its length direction has a length to limit, it makes corresponding mobile by winding speed to be adapted in the wide area detection scope electricity consumption subsystem controls.

14. the storage feed unit as in claim 2 or 6 is characterized in that, said ideal value is relevant with the winding speed value of uniformly-spaced dividing, and the interval between the adjacent ideal value increases with the increase of winding speed.

15. as the storage feed unit in the claim 2, it is characterized in that above-mentioned reference value memory (18,23,36) comprises a code-bar switch, is used to send corresponding ideal value to control system, ideal value is adjusted on the known average consumption, preferably is in a kind of adjustable state.

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