CS462290A2 - Method of yarn defect cleaning and yarn cleaner for this method realization - Google Patents

Description

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BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning yarn defects at a weaving point, wherein the yarn cross section or diameter is continuously removed by the yarn for the purpose of removing defects. -dimensional length and length: after detecting the defect in question, the "cut-and-wound" end of the yarn is removed from the bobbin and after the defect has been removed, the yarn is re-bonded. or punching - with the other end of the yarn.

The invention further relates to a yarn cleaner for detecting and removing yarn defects of a predetermined thickness and length, with a measuring sensor for continuously checking the yarn cross section, with the yarn shearing device and with an electronic control unit received from the measuring sensor. of the signals as well as the excitation of the cutting device of the yarn, in particular of the process according to the invention. ; '———— — — — — — — — — —-— ch — stro-j-í-oh -, ---jmé pr pr pr pr pr pr pr pr pr -Parad: _ 8

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Sil f ft. In other machines, thread breakage is removed, inter alia, by the fact that. , one end of the auxiliary thread. is, without. attaching it to the end of the spun yarn, for example to the spun yarn and the other end of the spun yarn, to the spunbond material discharged by, for example, a pair of spreader rollers in such a way that the spunbonded spun material is bound to the other end of the spun yarn. Since the thread ends of the threads are connected to one another, the number of thread breakages encountered by the number of threads occurring at the respective spinning station is equal to the thread breaks occurring.

If it is. then, when shifting to the winding machine, this point of attachment is locked and equipped with the usual procedure. < " " " " Ycikjy-pj 1ZS- * - ZΘ 2 u of the prior art cleanser is intended to be an auxiliary yarn cut, that is to say that there is an optional yarn in the weaving machine.

t · -t -I need to make .. additional ·, braid, or punch. SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for the cleaning of yarn. in order to remove the thread breakage, the auxiliary thread used is removed and removed as quickly as possible, and the material loss that is produced is always the smallest when splicing or blowing. This object fulfills the method of cleaning the yarn in the winding place, whereby the yarn cross-section or diameter during the winding is continuously scanned, the yarn is cut in order to eliminate the defects of the predetermined thickness and length after the defect in question has been detected the bobbin is removed and, after removal of the yarn defect, is again connected, in particular by braiding or punching, to the second end of the yarn according to the invention, the essence of which is that, due to the length of the yarn defects, the yarn is distinguished by the length of the yarn defects caused by spinning, and longer yarn defects caused by bonding using an auxiliary yarn, and that in the case of bonding a defect-affecting yarn is the shear detection of this longer yarn defect is at least time delayed so that the auxiliary thread is not cut. It is also an object of the present invention to provide a yarn cleaner according to the invention. This object fulfills the purification yarns for detecting and eliminating yarn defects of a pre-requisite thickness and length with a measuring sensor for: continuous inspection of the yarn with a yarn cutting device and an electronic control unit. evaluating the response of the received signal received signals. also energizing the yarn cutting device, in particular the yarn cutting device. / na 'na ·' implementation? the method (s) of the invention is based on the method of the present invention; Depending on the "detected yarn defect length, the electronic control unit may be excited by shorter defects such as yarn defect length. below a predetermined maximum length value L, the excitation of the yarn cutting device is essentially without delay and when fused using a longer yarn defect caused by a longer yarn defect length greater than or equal to the predetermined maximum value L r. The length of the installation is performed at a time delayed at least so as to avoid shearing the auxiliary thread.

Accordingly, according to the invention, there is a distinction between normal spinning caused by defects in the presence of thick places. 4 ,. The yarns and yarns using a yarn-assisted yarn. The invention (using the fact that yarn defects (caused by the use of yarn) are generally considerably longer than yarn defects occurring during normal spinning. The longer yarn web is detected, and according to the invention, the auxiliary yarn is always completely wound on the take-up reel, and as a result it can be easily removed and re-connected with the reel. In particular, in such cases where there are fixed lengths of the auxiliary thread and in particular defined lengths of the connection points, the method according to the invention may be relatively small. In the same German patent application, "Applicant of the same name", the method of operating a spinning machine, in particular the rings. [0006] A method is proposed for the use of a spinning machine, as well as a servicing robot for carrying out this method, which is of course always reliable and automatic. the connection points and thus ensure that the possible point of connection can be unquestionably rectified and disposed of during further processing.

According to this proposal, the robot receives, for example, a thread section of a defined length from the support thread supported by the robot. The winding process proceeds according to a precisely predetermined program, wherein the remaining length of the auxiliary thread available for connection is equally large with each connection. There are only minor differences in length on the annular spinning machines due, for example, to the instantaneous position of the annular bench in the region of the spikes during the wrapping and as a result of the intermittent moment of connection. fiber flow yarn »This ensures that instead of the yarn and the yarn sheath, the double strand cross section is known to have a length which is clearly greater than the length of the normally occurring defects caused by At today's usual yarn breakage rates, on the order of about one thread breakage per 100 spindles, and for three hour run times, there is, for example, one single stranding or stranding due to thread breakage 33 resulting in interweaving. As a consequence of the resulting thread breakage, therefore, it is hardly possible to harden the threads of the threads, the first of which is to wind the threads. the result of the markets is the need for splicing, or forcing, has, of course, the only meaning of the subordinate meaning. Understood 'It' is. as a consequence: reward for; the use of the yarn auxiliary thread in the yarn-bonding operation according to the invention is uncontrolled in the exterior of the yarn. it is replaced by a controlled interwoven splice which is provided as a result of the interrupted thread, which has precisely reproducible properties. . The drawn length of the cut portion, which is re-unwound after the cut-out, eventually after the occurrence of the yarn breakage caused, is unwound. in order to eliminate the defect, it is preferably selected depending on the kind of defect found, wherein the stretched length, when detected by the yarn defect caused, is at least equal to the length of the auxiliary thread. ť. When a yarn defect occurs due to normal spinning, · ΐ * · * ί '. 4 thi; u ř í; C:

Thus, with a winding spool, a shorter "yarn section while removing a defect" is removed to eliminate the defect:

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In this case, the present invention relates to the use of a compound of the present invention. A &quot; A &quot; the ancillary thread was all along its length, with the connection point from the side. ' According to one preferred embodiment of the method according to the invention, it is ensured that, due to the yarn defect, the length typical of the connection, the delayed cutting is carried out in each case, and not dependent on it. ; In particular, whether or not the thread break caused by the thread break occurs. This makes sure that the detected yarn defect may not, despite its greater length, come from a connection made using an auxiliary, so that no interruption of the yarn occurs at the diver. τί-. <>. M jZ- - 6 - * »? it is not necessary to cut. "If the yarn defect is expected to be caused by the joining, then the cut in question is idle. The shearing process carried out after the joining caused by the defects; the yarn may be with Advantageously, it is delayed in that it is dependent on the occurrence of a thread break that occurs on the substrate as a result of the used thread, in which case it is ensured that even if the thread is longer than expected, it is However, if such interruption is not present after a predetermined time, or if the measured length is measured, then the cut-off for the above-mentioned reasons should, after all, be carried out. Advantageously, the yarn defect caused by spinning is determined if the defect length is between a predetermined, still permissible length value and a predetermined maximum length. If the length of the defect is greater than or equal to the maximum value of the length, the defect length is predetermined with the thick places, just 'still' the 'length value'. treated as yarn defects.

The maximum length value is expediently chosen such that it is greater than the length of substantially all of the normal yarn defects occurring, and less than the smallest length in the yarn joining caused. In practice, it has proven expedient if this maximum value is approximately 80 mm and preferably is greater than 100 mm and moves - ~ - ·; - Ti.rn .. "3 r> rv_ A tass' · v - The load-carrying device for removing the defects caused by the splitting process is delayed; If the yarn defect 7 caused by the spinning is detected, the advantage is at least substantially non-delayed with the occurrence of the thick "yarn" location being generally regarded as a yarn defect only in the event of a predetermined failure. Thinner thicker spots are therefore not removed during the spooling of the spools on the spool.

The withdrawn length of the yarn section which is unwound with the winding bobbin to remove the yarn defect may advantageously be determined by the electronic control unit in such a way that at least when the yarn is defective, it is at least equal to r1 * 1 π rn + · 4. • The electronic control unit may include a microprocessor and, for example, an input unit through which the maximum defect length can be entered from the name, just the next &amp; An appropriate delay in the cutting process is expediently taken into account with respect to the length of the cutter. coils and coils of coil. An exemplary embodiment of a method and apparatus for cleaning defects according to the invention is shown in the drawings, in which: Figure 1 is a schematic diagram of a yarn cleaner associated with one winding station of the winding machine; FIG. 3 is a diagram for illustrating the time dependence of the yarn caused by the spin; and FIG. - 8 -> $ 5 ϋ; at the time of cutting at the length of the yarn defect, wherein the thickened location found corresponds to the yarn defect caused by the yarn joining using the yarn. . 1 ir. .and

FIG. 1 shows a winding spool 12 in which the yarn 26 is drawn off with the spool 24 and the spool 28, which in the example shown is a cross-spool. A yarn cleaner 10 is assigned to the winding station 12 for detecting and removing yarn defects, in particular pre-set thicknesses and lengths, and a measuring sensor 14 for continuously checking the cross-section or diameter of the yarn. The measuring sensor 14, which may be a capacitive sensor, transmits the measured voltage, which is amplified by the amplifier-m_3; .ni.c.ké_ří.di.c.í_jed.no-tC-e_lS ..__ 'ý-j. i '' "· - '..' '‘.'

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The electronic control unit 18 serves to measure the measured voltages 14 of the measured voltages as well as to energize the shearing device 16 and the connecting device 34 of the mating point 12. This winding device connecting device 34 may include, for example, a suction nozzle for receiving a concept wound on a coil 28 e.g. yarn cutting, as well as means for removing the defect of the yarn for re-joining the defect end with the second yarn end, for example by braiding or by sucking.

In addition, an input unit 32 is connected to the yarn cleaner 10 by means of which, for example, the corresponding yarn values for purifying yarns can be entered, such as for example thickness and length. £ &amp; The function of the yarn cleaner 10 shown in FIG. 1 will be described in the following with reference to the diagrams of FIGS. 2 and 3. FIG. The diagram shows the lengths Lp and

Lp with two yarn cleaners 10 of detected defects 20, or 2C, respectively. '' "; '·' ·,: '' '. '.

In the section-3 of this diagram, the measurement of the measured voltage Ujj for the two detected yarns 20 or 20 'of the yarn transmitted to the electronic control unit 18 is reproduced. when the thick spot or defect 20, 20 enters the measuring sensor 14 (see FIG. 1), the lateral rectangular signal of the measured voltage to be emitted occurs whenever the sensor 14 detects the end of the defect 20. 20 '. _______________ • K. £. . ia v; e $ &amp; fe &amp; 2, the electronic control poison is represented as a voltage impulse in FIG. 2 of the diagram. *>. ... 'řú ·' -.4 'wt- ·· $ 1

I iCpotkó.ů. 18 '. a cross-sectional device P-ld-to-transmit-to-switch-to-size. optionally TB_8 versus time t; The thick spots shown in FIG. 2 are defects 20, 20 of the yarn occurring during normal spinning. Vadypries of this species are generally relatively short and move rarely over-value, for example, 80 mm. FIG. 2 shows two defects 20 - 20C - which have a length below this maximum value. On the other hand, both of these defects 20 are shown in a fully drawn-out line, shown in lines forged, such a length Lp, or L, which is just above the currently permissible value U, of length. 'That's why he'll be with both fat% t? 20 ', 20 ', 20 ' is treated as a yarn defect while having a thicker place of lesser length the length L will not be treated as a yarn defect anymore. 1, 3, 3 is a diagram comparable to FIG. at-;; no '; now / shown. The yarns 22 may have a length that is greater than the maximum length L in length. As a result, the deceleration flank of the respective rectangular measured voltage U1, transmitted by the measuring sensor 14 (see FIG. 1), occurs temporarily beyond the currently permissible duration of a and at the maximum duration T, which, assuming a constant yarn withdrawal speed, they correspond to the just-admitted Ly value of the length, or the maximum L-length value. The thick spots 22, 22 'of FIG. 3, which are clearly larger in length, for example, ICO mm to 300 mm, are the yarn ties that are caused by the use of ancillary use made on a spinning machine. For example, in such a connection, using an auxiliary yarn, which is inserted on the spinning machine, one end of the auxiliary yarn is first inserted into the yarn. and the second end of the auxiliary is connected to the spunbond material discharged by the coil. Due to the fact that the winding of one end of the auxiliary thread is carried out according to a precisely controlled program, it is possible to connect the threads of the spun material to the second end of the auxiliary thread. having a yarn length each time the yarn breakage is removed, the shear thread is smaller than the length of the yarn thread at the shear layer. For example, only the annular bench in the area of the tip of the diver, during / at the time point connected to po né / / / / / / / / / / / / / / / / / / / /. is ensured,-?' that, for example, a double thread cross-section has a known length. For example, this length may be 100 to 300 mm. In contrast, the auxiliary used should have a length of approximately 1.6 m.

Each of the yarn breakage threads on the spinning machine remains on the reel, i.e., in the illustrated embodiment on the reel 24, as a yarn break. during spinning at the winding station 12, braiding or punching is performed. where appropriate, the electro-electrocellulose is

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I $ $ * Κ. *. '· $ · * - {·'. 4 ')' 18 'are designed such that, in the case of defects 20, 20', 22, 22 '', formed by tl-u3t-ym-place-e-m5, -to ~ base — jt ^ jtch-lengths .t-TOz-llzed '-ηθ' "ζ1 ^^ ΓύΤ5ΐΜ; '-' νηύ''ύ ^ 1 ^ 2Ο7 ^ '2Ο ^ / - ρ? ϊζ'6 r ^ 2, the shorter defect 20, 20 &quot; of the yarn is caused by bonding with the normal yarn and the longer yarn defects 22, 22 ' , caused by normal spinning, is recognized by the fact that the length of the respective point of gravity with a cross-section above a predetermined limit value, for example + 60%, is between a predetermined, still permissible length value and also a predetermined value. The maximum measured value L, r of the length is measured by the measured value 14, that is to say that the deceleration flank that appears when the defect is detected is measured. le- '

12

It lives between the still acceptable time and the maximum time T. 2, the yarns 20, 20 &apos; shown in FIG. 2 are satisfied by these thick spots found by the normal yarn. In the case of yarns 20, 20, the yarn is cut substantially free of time delay from the defect guard. the appearance of the yarn defect 20 or 20 &apos;, the electronical control unit 18 [see FIG. 1] issues a shear command TB or TB ' £ 1

On the other hand, thick spots, known as defects 22, 22 'of the yarn (see FIG. 3), caused by the bonding of the yarn, are present. -Deca-theta-t-thiazole-thiazole-sites are greater or equal to the maximum length L-value. As far as the voltage measured by the measuring sensor is concerned. 14, that is, with the end of the defect 22, 22 'of the yarn. the matching deceleration must appear after 'T'. For thick yarns or defects -22, 22 of the yarn shown in Fig. 3, these assumptions are met.

In contrast to the defects 20, 20 'of the yarn (see Fig. 2) caused by the normal spinning, the defects 22, 22' 'of the yarn caused by the tensioning using the auxiliary yarn (Fig. 3) are cut off. TB commands, TB delayed. The delay of these cutting shears TB, or TB, is accomplished in such a way that the auxiliary thread is not cut. ^ n ^^^ y6 ~ Wjë ý éní 'šě' "joining m - 13 - ·,. caused by an interruption of '·' the thread on. -; ìhiti''-in-is-'' ''nono Vždy Vždy v v v v v v v v v v v v v v v v v v vbbbbbbbbbbbbbbbbbbbbbikikikikikikikikikikikikikikikikikik .i ri &amp; nvj · -ip τηδΫΗ'ρ .'- ίτη pirl- »> T.

IftÍÉx. fc * i> ** úi. , n / 3-^Μ ^ šičyyuoduoduoduoduoduoduoduoduoduůůůů ^ ^ l l l l "" "" "" "" "" "" "" "" "němž němž němž němž němž němž němž němž němž němž němž 7 případně případně případně případně případně případně případně případně případně. a separate 'not shown' hit stop from the locked free end of the auxiliary thread having a length of 1 '' '' '' '

The 'TB', 'TB' cutting commands can be equipped independently of the thick spacing of the yarns, known as the 2.2-yarn splicing, depending on the occurrence of the above. yarn interference, eventually after -T ^. However, after a certain period of time, a cut is made for safety, regardless of whether or not the thread break occurs. . Although the yarn defects 22, 22 'shown in FIG. 3 are shown fully in FIG. the dotted line, respectively, have different lengths of 4-Lp-Lp-1-L-L-L-L-L-L-L-L-L-L-L-L-L-L-L. at the same time after the discontinuation of the thread has been detected. There is only a t-oy-to-Q-to-5-to-5-to-5-to-5 It is ensured that such threads are made in the form of a non-woven thread and that such threads are also provided with a thread. which, although having lengths between I- 'and Lp, are not reliably eliminated. In principle, however, it is also conceivable that in the case of yarn defects of the corresponding length, any cutting command, if any, will be suppressed. large enough - probability, that they are still in the threads caused by the interruptions.

While, according to FIG. there are different lengths Lp, bp, which are known to be caused by the defects 2G, -20 of the yarn, are produced at different times.

In principle, FS 3 1a and U-14 are also conceivable, in this case equipping the firing commands always at the same time point, for example at the time point. it is ensured that the yarn defect caused by the normal spinning process is not or not. '/.··' ··· '·' ·· '> ·. , · .. '? - · ..

The release on the spool 28 (see Fig. 1) of the wound end of the yarn may be performed by a normal, so far conventional cycle. However, the length of the suction nozzle with the coil 28 of the aspirated yarn section is determined by the respective excitation depending on the type of defect detected. in the case of a connection caused by a defect, the withdrawn length will be selected so as to at least equal the taper of the auxiliary thread Lu (see Fig. 3). In the case of a shorter yarn defect caused by normal transformation, the connecting device 34 of the winding station 12, or the suction nozzle, by the electronic control unit 18 will be encouraged to draw a shorter yarn section with the coils 28 respectively. '· ··'. ·· '- · "' ·. '

Required values of I ^, T ^, 'and LmaX> possibly' T'maX, 'just' ~ so '' as '' max fffial '' will be "cross-sectioned", · after china-is -p Which will be treated as yarn defects with thick places may be inputted via an input unit 32 coupled to the electronic control unit 18.

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Claims (7)

-‘TH'1 ··. ‘/ X. .- · 15 - š (PATENT CLAIMS ... ': - .-. ----' S.JíTV ^ .ř - * 7 '"' '· -', J '.r' ·. · - V '7 · ^' '' * · ''> · "t.vi .. · ' The composition of the present invention is characterized by the inclusion of a polyisocyanate and a &quot; iodine "; ν ^ '· λΖ ^ V ""'.:> 'Λ ·.' The length of the sponge is cut and the spool is wound up at the end of the yarn. with the coil removed and, after the defect of the yarn defect, is again connected to the other end by splicing or spraying with the other end. in that at a thick point formed by the α-β-β 1 -n. £ -¼. the yarn, the base of which distinguishes between the shorter - v; · '*'? '. "* · <** ί>» ·· λ' * - · ΐ ' - ^ Λ.Ίΐ «-; ΐΰ, · · ·.? .- '. . .. - ·, z; l **? · "· Il ·. ·: - * '··’ ... <’">. Due to spinning, and other defects, the use of an auxiliary thread, and in the case of ...... ·. .. · '· -. · .. ·' »''.,, .. _....------- ... ^^ W ^ joyanim> zpusobeneTvady nrTze se postu» χ · 1 - The cut-off length of the yarn is at least so long that the yarn does not over-cut. .?, ~ · Λί '. ·'., · .. -I- IJ ...- t4f.su ·, - "J iA #r. ·% 'T l · 1'"!. ·? + -ΝΛ-ΧΤ'ίΤ- · ~ ^ «· ^ · -? * U. A-Ií" -. · · - «· · - '.' ·" Λ-ζν -, —- ^ 2- .; 2. A method according to claim 1, wherein the yarn withdrawn length is unwound again in order to remove the yarn. '', · '-I v' - · '. ·; .. r -' Λ. Ř <· - *, v 'no "·"? "' Λ ·« · '- -v' --V [0021] The apparatus of claim 1, after having provided a shear treatment or optionally a shear treatment. '/ "' -. · - - ~ -7" .- "nano iovanitn -zmianhenphn ^ nrT-iishpni + Ί." [0016] Depending on the type of defect detected, it is determined, depending on the type of defect being detected, that the withdrawn length of the attachment of the yarn defect is at least equal to the length of the yarn. ; ^; 7. A method according to claim 1 or 2 wherein the yarn is defective. , with a length typical of joining, is in every 4 smoke. a delayed post-iodine filter is performed in the event of a non-netting network. trp ··:. · "- .. i v-. · * ·" · · i · · · · · · · · · · · · · · · · · · · · · · · · · · · \ t - >> ......- - ..- »ϊζί!. · Ί!» -> γ * * * * * * * * * * * * * * * * * _ C í-Í - - O O O O O O O O O - - - - - - - - - - - - - - 4 3 ΐ <ί 7 ·: Μ- Ύ '. ·? * whether there is in particular an auxiliary thread caused by a thread break or not. 4. A method as claimed in any one of the preceding claims, wherein the shearing process is immediately provided to interrupt the yarn break caused by the yarn joining. • * 5. A method according to any one of the preceding claims, characterized in that a yarn defect caused by a spinning defect in the case of a defect length is determined between a predetermined, still permissible length value and a predetermined maximum length value, and a yarn defect caused by a defect length or greater. same as the maximum length value. 6. A process as claimed in any one of the preceding claims wherein the maximum length is greater than about 80 mm and preferably greater than about 100 mm, and is preferably between about 100 mm and about 300 mm. A method according to any of the foregoing; characterized in that the yarn is cut substantially without delay after detection of the defect caused by the defect. 8. A method according to any one of the preceding claims. in that the possible thick yarn point is treated as a yarn defect only when the predetermined maximum y g is fj · H ť-VltpT i i - - · +4, .......... - ____________. _ _ - 17 - 9. A yarn cleaner for detecting and removing defects in accordance with a predetermined thickness and length, with a measuring sensor for continuously checking the yarn cross-section, with a yarn cutting device and an electronic control unit for evaluating the measuring sensor of the signals received, as well as for exciting the cutting device. carrying out the method according to any of the preceding claims, characterized in that the yarn cutting device (16) can be excited by the electronic control unit (18) depending on the detected yarn defect length in such a way that during spinning caused by shorter defects (20, 20 *) of yarn by the length of the defect below a predetermined maximum length L value is the excitation of the yarn splitting device (16) performed substantially and during the joining "using the additionally caused longer yarn defects (22, 22") with a defect length of greater than or equal to as is to be requested in advance The maximum maximum value of L, the excitation is made in ii -ueiio- ene ene ene ene ene ene-------(αβ-7Κ - ^ - ρΓθ3-τ-π-ββ-ι-νρο -— powerful threads. 10. A yarn cleaner according to claim 9, wherein the withdrawn length of the yarn section (26) again unwound with the winding machine (28) in order to remove the yarn defect can be determined by the electronic control unit (18) in such a way that it is retracted the length in the case of a yarn defect (22) caused by at least equaling the length (L) of the auxiliary thread. H L.. 20. 9.I99O Z 3079 Representative: PATENTSEB 3> FRAME / FRACOVr