CN1572942A - Method and apparatus for preventing barre mark on loom - Google Patents
Method and apparatus for preventing barre mark on loom Download PDFInfo
- Publication number
- CN1572942A CN1572942A CNA2004100485206A CN200410048520A CN1572942A CN 1572942 A CN1572942 A CN 1572942A CN A2004100485206 A CNA2004100485206 A CN A2004100485206A CN 200410048520 A CN200410048520 A CN 200410048520A CN 1572942 A CN1572942 A CN 1572942A
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- CN
- China
- Prior art keywords
- weft yarn
- loom
- fell
- weft
- cloth fell
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/002—Avoiding starting marks
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/04—Control of the tension in warp or cloth
- D03D49/06—Warp let-off mechanisms
- D03D49/10—Driving the warp beam to let the warp off
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
A weft insertion pattern and a correcting information of a cloth fell position are recorded in a control computer C. The control computer C recognizes the type of the final weft yarn remaining on the cloth fell W1 based on the turnover number information of the loom obtained from a rotary encoder 27 and the weft insertion pattern when a weaving-starting signal is input by the on-action of a starting switch 28. The control computer C controls the rotation of a delivery motor 11 for correcting the cloth fell position according to the type of the recognized weft yarn.
Description
Technical field
The present invention relates to be used to prevent from loom, to produce the method and apparatus of weft bar.
Background technology
When restarting the loom that stops, the insufficient strength of beating up is abundant, and during the loom work stoppage, described warp thread extends.Therefore, when loom restarts in this state, just produced so-called weft bar.
According to JP6-102861B, produce in order to prevent weft bar, before restarting loom, with one can normally rotate with reverse rotation be used to rotate release motor through axle, reverse rotation so that the correction cloth fell, warp rolls around this on axle.When correcting cloth fell, correct the amount of the needed release motor of cloth fell reverse rotation, determine downtime according to loom.
According to JP2001-172847A, cloth fell is according to the fell state correction of warp thread.
When the weft yarn that uses number of different types was weaved, existence can not be proofreaied and correct the danger that prevents that weft bar from producing by cloth fell mentioned above.For example; even the loom dwell time is identical; between the loom down period; the warp thread elongation is retained in occasion on the described fell as final weft yarn weaving the thick weft yarn just thrown in before stopping; and weave stop before; thin weft yarn is retained between the occasion on the described fell as final weft yarn, and is different.This difference of elongation mainly be since when final weft yarn is thick the tension force of warp thread and the difference between the tension force of final weft yarn warp thread than carefully the time cause.The difference of warp thread span has caused because the difference of the cloth fell displacement that the warp thread expansion is caused.Therefore, only, can not prevent because the generation of the weft bar that difference caused of weft yarn type by according to loom downtime and Warp opening state correction cloth fell.
Summary of the invention
The objective of the invention is when weaving, weaving the generation that prevents weft bar at first with the weft yarn of number of different types.
To achieve these goals, according to the present invention, provide a kind of and on the loom that is used to implement with the weft weaving of number of different types, prevented the method that weft bar produces.Before this method is included in and begins to weave,, the cloth fell of Woven fabric is proofreaied and correct according to the type that is retained in the final weft yarn on the fell.In addition, according to the present invention, provide a kind of being used for being applicable to that weft yarn with number of different types carries out the device that prevents on the woven loom that weft bar from producing, this device comprises: the cloth fell means for correcting is used for the position of Woven fabric fell is proofreaied and correct; And correction control apparatus, be used to determine to stay the kind of the final weft yarn on the described fell, and, be used for cloth fell by the described Woven fabric of described cloth fell correction.
Description of drawings
In the accompanying drawings:
Fig. 1 is the overall side view of loom, represents first kind of embodiment of the present invention;
Fig. 2 is the floor map of weft insertion device;
Fig. 3 A and 3B are weaving interval, the cutaway view of a part of Woven fabric of close fell;
Fig. 4 is the time graph that is used to illustrate the cloth fell correction; With
Fig. 5 and 6 is flow charts of expression cloth fell correction program.
The specific embodiment
Describe below in conjunction with Fig. 1-6 pair of embodiment of the present invention that are used on the air-jet loom.
Fig. 1 is the schematic side elevation of loom integral body.Symbol M is represented the loom CD-ROM drive motor, and its work is handled by control computer C.The electronic release motor of numbering 11 expressions, it is independent of loom CD-ROM drive motor M, and can normally rotate and reverse rotation.The release motor 11 that is used as the cloth fell means for correcting drives through axle 12, and warp thread T is wrapped in above it.Carry by back flow roll 13 and jockey pulley 14 from the warp thread T that carries through axle 12, so that by heddle (heald) 15 and reed 16.By expansion link 17, surface roll 18, pressure roll 19 and stretcher guiding parts 20 are carried Woven fabric W, so that reeled by cloth beam 21.Cooperate the surface roll 18 that Woven fabric W is stretched to cloth beam 21 1 sides with pressure roll 19, obtain driving force from loom CD-ROM drive motor M.Cloth beam 21 rotates synchronously with surface roll 18.
The comparison of the detection tension force that control computer C determines according to default warp tension with by input signal, and according to the yarn beam diameter by determining from the detection signal of the rotary encoder 27 that is used to detect the loom anglec of rotation, control discharges the rotary speed of motor 11.Described control computer C basis is from being incorporated into the rotational angle detection signal that discharges the rotary encoder 111 on the motor 11, FEEDBACK CONTROL discharges the rotary speed of motor 11, so that during normal rotary work, control warp tension, and prevent from during weaving, to produce weft bar.Rotary encoder 27 is the output of the rotation each time initial signal of loom.Control computer C determines the loom rotation number according to the initial signal that obtains from rotary encoder 27.According to the definite diameter of loom rotation number through axle.
According to start signal (weaving termination signal), make loom starter M and release motor 11 stop synchronously by control computer C from shutdown switch 29.
As shown in Figure 2, weft yarn Y1 is pulled out from weft yarn axle 31, and it is wound on the spool 301 so that store by the weft length mensuration and the storage device 30 of coiling type.Rotate the weft yarn coiling pipe 302 of weft length mensuration and storage device 30 by the coiling motor 303 that is independent of loom starter M.When weft yarn is reeled pipe 302 rotations, will be wound on the spool 301 from the weft yarn Y1 that weft yarn axle 31 is pulled out.Be wound on pulling out of weft yarn Y1 on the spool 301 that is used to preserve by stop pin 321 controls that drive by electromagnetic valve 32.
Near spool 301, the weft yarn that the retroreflective photoelectric sensor type has been installed discharges detector 33.Discharge detector 33 detects the weft yarn Y1 that pulls out from spool 301 release by weft yarn.To offer control computer C from the release detection signal output that weft yarn discharges detector 33.Detect information by control computer C basis from the release detection information of weft yarn release detector 33 and the loom anglec of rotation that obtains from rotary encoder 27, control the magnetization/demagnetization of electromagnetic valve 32 and the work of coiling motor 303.When electromagnetic valve 32 magnetization, stop pin 321 separates with spool 301, makes it possible to weft yarn Y1 is pulled out from spool 301.
Weft length mensuration and storage device 34 by the coiling type are pulled out weft yarn Y2 from weft yarn axle 35, and it is wound on the spool 341 that is used to preserve.By being independent of the coiling motor 343 of loom CD-ROM drive motor M, the rotation weft length is measured and the weft yarn coiling of storage device 34 manages 342.When weft yarn was reeled pipe 342 rotations, the weft yarn Y2 that pulls out from weft yarn axle 35 was wound onto on the spool 341.Be wound on pulling out of weft yarn Y2 on the spool 341 that is used to store by stop pin 361 controls that drive by electromagnetic valve 36.
Near spool 341, the weft yarn that the retroreflective photoelectric sensor type has been installed discharges detector 37.Discharge detector 37 detects the weft yarn Y2 that pulls out from spool 341 release by weft yarn.To offer control computer C from the release detection signal output that weft yarn discharges detector 37.Detect information by control computer C basis from the release detection information of weft yarn release detector 37 and the loom anglec of rotation that obtains from rotary encoder 27, control the magnetization/demagnetization of electromagnetic valve 36 and the work of coiling motor 343.When electromagnetic valve 36 magnetization, stop pin 361 separates with spool 341, makes it possible to weft yarn Y2 is pulled out from spool 341.
By the injection action of picking main jet head 38, the weft yarn Y1 on the spool 301 is ejected in the opening of warp thread T.By the injection action of picking main jet head 39, the weft yarn Y2 on the spool 341 is ejected in the opening of warp thread T.Successive action by the auxiliary shower nozzle of a plurality of pickings is ejected into weft yarn Y1 and Y2 in the opening of warp thread T.
Picking main jet head 38 is connected with pressure-air delivery source (not shown) with 42 by electromagnetism close/open valve 41 with 39.Handle the magnetization/demagnetization of electromagnetism close/open valve 41 and 42 by control computer C.
Control computer C plays a part cloth fell control device and weft yarn selecting arrangement, corrects control program according to the cloth fell shown in the flow chart of Fig. 5 and 6 and carries out the rectification of cloth fell.Below in conjunction with the flow chart of Fig. 5 and 6, rectification describes to cloth fell.
Control computer C is in input and weaves the holding state of stop signal, as from be installed in picking stop a terminal side the photoelectric sensor type picking error detector 43 or from the anomaly detection signal of warp thread dicing detector 44, or come self termination to switch 29 enabling signal (step S1).When having imported (when the answer of step S1 is "Yes") when weaving stop signal, control computer C indication loom CD-ROM drive motor M quits work (step S2), and meanwhile, indication discharges motor 11 quit work (step S3).As a result, loom CD-ROM drive motor M and release motor 11 are shut down synchronously, and stop the release of warp thread T and the stretching of Woven fabric W, reed 16 are stopped, on the position of soon upwards beating up shown in the dotted line among Fig. 1.
The transition that curve C 1 expression loom CD-ROM drive motor M among Fig. 4 shuts down from working to, and curve C 2 expressions discharge the transition that motor 11 is shut down from working to.The stop signal S that weaves shown in Figure 4 is provided by shutdown switch 29 or warp thread dicing detector 44.
If imported owing to what the reason except the picking mistake produced and weaved stop signal S (as shown in Figure 4), as the words of weaving stop signal that provided by shutdown switch 29 or warp thread dicing detector 44 (be among the step S4 answer be "No"), control computer C has carried out the preparation (weave enabling signal S0) (step S5) of input from the enabling signal of starting switch 28.When having imported when weaving initial signal (that is) when the answer among the step S5 is a "Yes", control computer C indication loom CD-ROM drive motor M and discharge motor 11 slow reverse rotation scheduled volumes (step S6 and S7).As a result, shown in curve r and u, loom CD-ROM drive motor M and discharge motor 11 and carry out reverse rotation slowly synchronously, and loom carries out a reverse rotation is so that realize slowly returning to the enable position of weaving before being about to beat up.This slow recovery, be according to the reed 16 of the position before being about to beat up stop to realize, and not with on the final weft yarn of weft yarn picking picking before be about to quit work (that is, stay on the fell W1 final weft yarn) at loom.In other words, when restarting to weave, final weft yarn must be sent back to the previous position that is equivalent to the amount that loom rotates a circle, so as after final weft yarn this weft yarn of picking, and do not have the sky latitude.
Then, control computer C determines to stay the type (step S8) of the last weft yarn on the fell W1 according to the information of the relevant loom number of revolutions that is obtained by rotary encoder 27 and picking form.
Fig. 3 A is illustrated in loom, and to want the final weft yarn (promptly staying the final weft yarn on the fell W1) of picking before being about to quit work be the situation of Y1, and Fig. 3 B is illustrated in loom and is about to quit work that to want the final weft yarn of picking before be the situation of Y2.When final weft yarn was Y1 (that is, when the answer of step S8 is a "Yes"), control computer C corrected (step S9) according to final weft yarn Y1 indication carrying out cloth fell.Carry out purpose that cloth fell corrects and be in order to discharge motor 11 backward rotation by making, toward pulling back, and the curve t1 among Fig. 4 represents to correct in order to carry out cloth fell according to final weft yarn Y1, discharges motor 11 reverse rotation slowly with fell W1.When final weft yarn was Y2 (that is, when the answer of step S8 is a "No"), control computer C was according to final weft yarn Y2, and indication is carried out cloth fell and corrected (step S10).Curve t2 among Fig. 4 represents to correct in order to carry out cloth fell according to final weft yarn Y2, discharges motor 11 reverse rotation slowly.The information of the relevant release motor 11 slow reverse rotation amounts of representing by curve t1 and t2 is to correct information by the cloth fell of input unit 22 input control computer C.
After carrying out the cloth fell rectification, control computer indication loom CD-ROM drive motor M and release motor 11 carry out normal rotary work (step S11 and S12), shown in curve D 1 and D2, loom CD-ROM drive motor M and release motor 11 begin normal rotary work synchronously with one another, weave thereby restart.
When to weave termination signal be signal from picking error detector device 43 (, when the answer of step S4 is "Yes"), control computer C indication loom CD-ROM drive motor M and discharge the amount (step S13 and S14) that motor 11 slow reverse rotations are scheduled to.As a result, loom CD-ROM drive motor M and release motor 11 carry out slow reverse rotation synchronously with one another.By the slow reverse rotation of loom CD-ROM drive motor M, slow one week half of reverse rotation of loom, and on described warp thread, realize opening, so that form maximum opening.Under this maximum open state, the yarn (not shown) of the mistake on the fell W1 is discharged from the grasp motion of warp thread, and the yarn of mistake is taken out from fell.Then, control computer C carries out picking fault processing (removing the process of wrong yarn) (step S15) by using the weft processing equipment (not shown).For instance,, used and a kind ofly utilized follow-up weft yarn to do clue, the yarn of mistake has been pulled out from fell, and the weft processing equipment that takes out, and need not cut and separate the wrong yarn and the follow-up weft yarn of picking as weft processing equipment.
After the picking fault processing finished, control computer C made loom CD-ROM drive motor M and discharges the predetermined amount (step S16 and S17) of motor 11 slow reverse rotations.As a result, loom CD-ROM drive motor M and discharge the motor 11 slow predetermined amount of reverse rotation synchronously with one another, and loom carries out the slow reverse rotation of half cycle substantially is so that realize the transition of weaving starting state before being about to begin to beat up.
When the yarn (final weft yarn) of described mistake when being Y1 (when the answer of step S18 is "Yes"), control computer C indication loom carries out cloth fell according to final weft yarn Y1 and corrects (step S19).When (answer of step S18 is a "No"), control computer C indication loom carries out cloth fell according to final weft yarn Y2 and corrects (step S20) when final weft yarn is Y2.
Then, described control computer C indication loom CD-ROM drive motor M and discharge motor 11 and carry out normal rotary work (step S11 and S12), and loom CD-ROM drive motor M and discharge motor 11 and begin normal rotary work synchronously with one another weave so that begin.
Described first kind of embodiment provides following effect:
(1-1) shown in Fig. 3 A and 3B, when starting owing to yarn breakage or terminating switch 29 when weaving termination (loom work stops), maintenance warp thread T catches the state of final weft yarn (Y1 or Y2), opens up to starting switch 28.In this state, when final weft yarn is thick (weft yarn is the occasion of Y1), the tension force of warp thread T is greater than the tension force of (weft yarn is the occasion of Y2) warp thread T when final weft yarn is thin.Therefore, during the loom work stoppage, warp thread T stretches final weft yarn thick (this moment, weft yarn was Y1), greater than during the loom work stoppage when final weft yarn is thin the stretching of (this moment, weft yarn was Y2) warp thread T.Warp thread T's is flexible big more, and the position of fell W1 is big more towards the mobile distance of loom front end (right side of loom among Fig. 1).
Shown in curve t1 and t2 among Fig. 4, in the present embodiment, when the final weft yarn on staying fell W1 was Y1, the amount of release motor 11 slow reverse rotations discharged the amount of motor 11 slow reverse rotations when being Y2 greater than the final weft yarn on staying fell W1.In other words, the final weft yarn on staying fell W1 is coarse yarn (when weft yarn is Y1), and cloth fell increases to the amount of pulling back, and the final weft yarn when staying fell W on is when being fine yarn (when weft yarn is Y2), the amount minimizing that cloth fell pulls back.
Like this, correct (in the present embodiment, the type of yarn is to classify according to the thickness of yarn), can effectively stop the generation of weft bar according to the cloth fell that the type of staying the final weft yarn on the fell W1 (Y1 or Y2) is carried out.
Eliminating the cloth fell rectification of carrying out after the wrong yarn, can effectively prevent the generation of weft bar equally according to the wrong yarn types of staying on the fell W1 (final weft yarn).
(1-2) control computer C corrects control device, and it can determine to stay the type of the final weft yarn on the fell according to stored picking form, and executes cloth fell according to the definite fructufy that is obtained thus and correct.Described picking form is the information that can be used for determining to stay the final weft yarn on the fell W1.
(1-3) can forward and the electric power of reverse rotation discharge motor 11 and be suitable as the cloth fell apparatus for correcting.
In the present invention, it also is feasible below improving:
(1) in general, when loom downtime not simultaneously, the stroke of warp thread T is also different.Therefore, when carrying out cloth fell according to the type of final weft yarn when correcting, also need to consider loom downtime.For example; in this case; discharge that motor 11 carries out that cloth fell is corrected and the slow reverse rotation amount of carrying out by using a function calculation; wherein; will be corresponding to the reference cloth fell correct amount (in the above-described embodiment, correct amount is to represent by curve t1 and t2 among Fig. 4) and loom combination downtime of weft yarn type.Above-mentioned with reference to cloth fell correct amount and above-mentioned function, be to obtain by experiment based on the cloth fell delta data, or determine according to empirical rule in the past.
(2) can also be by can forward and the electric coiling motor drive surfaces roller 18 of reverse rotation, with described coiling motor as the cloth fell apparatus for correcting.In this case, cloth fell is corrected, and can itself finish or by using motor 11 and coiling motor to finish simultaneously by described coiling motor.
(3) the present invention is applicable to that also the weft yarn that is fit to type more than three kinds or three kinds carries out woven loom.
(4) the present invention also is applicable to polytype weft yarn and carries out woven Rapier looms.
Claims (5)
1. method that prevents to carry out occurring on the woven loom weft bar with polytype weft yarn being applicable to, this method is corrected the cloth fell of Woven fabric according to the type of staying the final weft yarn on the fell before being included in and beginning to weave.
2. one kind is used to stop the device that carries out producing on the woven loom weft bar at the polytype weft yarn of use, and this device comprises:
The cloth fell apparatus for correcting is used for the cloth fell of Woven fabric is implemented to correct; With
Correct control device, be used to determine to stay the type of the final weft yarn on the fell, and be used for correcting by the cloth fell of described cloth fell apparatus for correcting control Woven fabric.
3. as claimed in claim 2ly be used to stop the device that produces weft bar, it also comprises the weft yarn device for sorting that is used to store the picking form, being used for selecting and determining will be from the weft yarn of polytype weft yarn picking, wherein, described rectification control device determines to stay the type of the final weft yarn on the fell according to the picking form that is stored by described weft yarn weft insertion device.
4. as the device that produces weft bar that is used to stop on loom of claim 2 or 3, wherein, described cloth fell apparatus for correcting is can forward and the electronic release motor of reverse rotation, and is fit to make through the axle rotation, and warp thread is wrapped in this above axle.
5. be used to stop the device that produces weft bar on loom as any one among the claim 2-4, it also comprises input unit, is used for to described rectification control device input rectification information, so that correct the cloth fell of Woven fabric.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003160860A JP2004360117A (en) | 2003-06-05 | 2003-06-05 | Method and apparatus for preventing weaving bar from being caused in loom |
| JP160860/2003 | 2003-06-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1572942A true CN1572942A (en) | 2005-02-02 |
Family
ID=34053521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100485206A Pending CN1572942A (en) | 2003-06-05 | 2004-06-07 | Method and apparatus for preventing barre mark on loom |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2004360117A (en) |
| CN (1) | CN1572942A (en) |
| BE (1) | BE1016284A3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111876884A (en) * | 2020-07-23 | 2020-11-03 | 浙江泰坦股份有限公司 | Zero alignment method for weaving machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06102861B2 (en) * | 1984-09-25 | 1994-12-14 | 津田駒工業株式会社 | Knack back control method and device in electric loom feeding device |
| BE1002819A3 (en) * | 1989-02-06 | 1991-06-18 | Picanol Nv | Method for weaving a fabric WITH TISSUE PATTERN AND LOOMS APPLYING THIS PROCESS. |
| US5224520A (en) * | 1990-11-19 | 1993-07-06 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Weaving bar prevention in a jet loom |
| JP3487502B2 (en) * | 1999-12-14 | 2004-01-19 | 津田駒工業株式会社 | Method and apparatus for preventing weaving steps of loom |
-
2003
- 2003-06-05 JP JP2003160860A patent/JP2004360117A/en not_active Withdrawn
-
2004
- 2004-06-03 BE BE2004/0280A patent/BE1016284A3/en not_active IP Right Cessation
- 2004-06-07 CN CNA2004100485206A patent/CN1572942A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BE1016284A3 (en) | 2006-07-04 |
| JP2004360117A (en) | 2004-12-24 |
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