CN102449216B - Method for inserting a weft thread and airjet weaving machine - Google Patents
Method for inserting a weft thread and airjet weaving machine Download PDFInfo
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- CN102449216B CN102449216B CN201080023356.7A CN201080023356A CN102449216B CN 102449216 B CN102449216 B CN 102449216B CN 201080023356 A CN201080023356 A CN 201080023356A CN 102449216 B CN102449216 B CN 102449216B
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- main burner
- weft yarn
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
- D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
- D03D47/3026—Air supply systems
- D03D47/3033—Controlling the air supply
- D03D47/304—Controlling of the air supply to the auxiliary nozzles
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Abstract
A method for inserting a weft thread (4, 5) into a shed of an airjet weaving machine which comprises a main nozzle device (70) and at least one set of relay nozzles (11 to 19), wherein a standard setting for a supply of compressed air to the main nozzle device (70) and/or to the at least one set of relay nozzles (11 to 19) is determined and is adjusted until a weft insertion becomes unstable. An airjet weaving machine which applies an above mentioned method is also disclosed.
Description
Technical field
The present invention relates to a kind of method of weft yarn being inserted to the shed open of air-jet loom, the wherein compressed air of the autonomous spray nozzle device of weft yarn origin and at least a set of relay nozzle transportation.Preferably, the compressed air providing to main burner device and at least a set of relay nozzle is by the cutout valve control of control module control.The invention still further relates to a kind of air-jet loom of applying the method, in other words, a kind of air-jet loom that can adopt said method.
Background technology
From WO2007/057217A1, in the time that weft yarn betransported through shed open, provide compressed air to continuous cover relay nozzle continuously.Provide compressed air by cutout valve to the different relay nozzle of many covers.Each cutout valve is connected with a set of relay nozzle, and each cutout valve is by control module control.In the time that weft yarn betransported through shed open, on weft yarn, measure.For every cover relay nozzle, in the time being interrupted to the compressed-air actuated supply of this cover relay nozzle, this time point can be determined.This time point can be determined according to described measurement.This allows fully to support slow weft thread and quick weft yarn from the compressed air of continuous cover relay nozzle.As described in WO2007/057217A1, the impact that the compressed air of a set of relay nozzle is supplied with may be selected to be strong, medium or limited.
In the disclosed air-jet loom of WO2007/057217A1, the weft yarn that comes from different weft yarn buffers is inserted into shed open according to certain pattern.For every weft yarn that comes from certain weft yarn buffer, provide the main burner device of the main burner that contains accordingly arranged in series.Further, provide many cover relay nozzle for come from the weft yarn of different weft yarn buffers through shed open transportation, more specifically, for passing shed open along guiding channel transported weft thread.By being arranged in the relevant cutout valve between compressed air accumulator and corresponding main burner, provide compressed air to weft yarn is injected to shed open to each main burner of main burner device.By being arranged in the relevant cutout valve between compressed air accumulator and relevant a set of relay nozzle, provide compressed air to every cover relay nozzle.Every cover relay nozzle comprises at least one relay nozzle and such as two or three relay nozzle being mounted adjacent.
In fabrication processes, the compressed-air actuated amount providing to main burner and/or a set of relay nozzle within a period can regulate by choke valve Electric Machine Control, that be arranged between memory and corresponding main burner and/or a set of relay nozzle.Such as, the choke valve of this Electric Machine Control comprise can be by control module the controlled stepper motor with the two-way control of multiple ranks.In fabrication processes, can regulate according to the deviation of the insertion parameter recording the control of a period compressed air quantity delivered.Such as, can control the amount of a period compressed air supply so that the weft yarn inserting roughly arrives the end of shed open in the position, angle of the expectation of loom.According to a kind of possibility, average deviation arrives between the time point that the time point of shed open end and loom main drive shaft arrive position, given angle and is determined at weft yarn.Choke valve can be controlled in some way, and which makes the average deviation of being determined in the several times insertion process of weft yarn that comes from corresponding weft yarn buffer will be substantially equal to set-point.
Summary of the invention
The object of the present invention is to provide a kind of method and air-jet loom, the method and air-jet loom are intended to reduce for weft yarn being inserted to the compressed-air actuated amount of shed open, avoid producing weaving error in the time of the compressed-air actuated amount reducing for weft yarn being inserted to shed open simultaneously.
Following methods can achieve this end: the method is for inserting weft yarn the shed open of air-jet loom, this air-jet loom comprises main burner device and at least a set of relay nozzle, the standard setting that wherein compressed air of main burner device and/or at least a set of relay nozzle is supplied with is determined, and the standard setting that the compressed air of wherein said main burner device and/or at least a set of relay nozzle is supplied with is conditioned to reduce compressed-air actuated supply, and wherein, after adjustment criteria is set, observe the stability that weft yarn inserts.Preferably, the compressed air of main burner device and/or at least a set of relay nozzle is supplied with and is reduced, until the insertion of weft yarn becomes unstable.
Standard setting may be defined as weaving pattern, yarn type and the function according to other parameters that established data draws before, and described parameter is for example the measured value to institute's transported weft thread in transportation.The stability of inserting by observing weft yarn, can optimisation criteria set, and prevents the error of weaving simultaneously.If it is stable that the weft yarn of observing inserts, standard setting can further be regulated, such as compressed-air actuated supply can be reduced further.If but the weft yarn of observing inserts and becomes unstable, standard setting can be reset, so that it is stable to guarantee that in the upper periodic process of once weaving weft yarn inserts, such as the standard setting before being reset to.
According to an embodiment, according to the interruption that regulates the compressed air of main burner device and/or at least a set of relay nozzle to supply with the measurement of institute's transported weft thread, so that adjustment criteria is set.The time point that the compressed air of interruption and/or beginning main burner device and/or a set of relay nozzle is supplied with can alternately be regulated.According to another embodiment, first only regulate the setting of the air supplies of many cover relay nozzle, and if reach the limiting values that reduce many cover relay nozzle air supplies, interrupt the time point that the compressed air of main burner device supplies with and be also set more early.Preferably, the air supply of main burner device is only reduced to and in the time starting to insert, allows weft yarn to still have sufficient force to accelerate to the quantity while reaching desired speed, this desired speed determined by power, that is, and and the throughput of main burner device applied pressure and/or time per unit.Therefore, can realize relay nozzle with minimum power support shute, and avoid causing the unnecessary acceleration of weft yarn at shed open porch main burner device.
According to another embodiment, in the time that weft yarn insertion becomes unstable, regulate the compressed air of main burner device to supply with, specifically reduce and supply with.If the compressed air of main burner device is supplied with and is reduced, the weft yarn of insertion is less advanced shed open.Correspondingly, the filling speed of shed open porch also decreases, so that the front end of weft yarn can be not slower than the rear end of inserting weft.This allows to realize the following setting that compressed air is supplied with, the time point being set in more early that wherein relay nozzle compressed air is supplied with is interrupted, and do not cause because of speed difference, particularly because the speed of shed open porch is greater than the speed of shed open end, inserting weft can form the risk of pitch of the laps.Therefore,, after the compressed air that reduces main burner device is supplied with, can supply with and regulate further described setting by being reduced by least the compressed air of a set of relay nozzle.
According to another embodiment, main burner device comprises the first main burner and the second main burner, wherein, in the time that weft yarn insertion becomes unstable, regulates the compressed air of the first main burner to supply with, and specifically reduces and supplies with.If the first main burner is fixedly installed on loom frame, the first main burner is also referred to as attached main burner or fixing main burner.Preferably, observe from the moving direction of weft yarn, the first main burner is arranged as and makes it before near the second main burner being installed on shed open, is specifically arranged near the reed on slay.If the second main burner is installed on slay, the second main burner is also referred to as removable main burner.By this way, be arranged near the second main burner of reed and weft yarn deeper can be inserted to shed open, in other words, this can blow weft yarn insert shed open as far as possible longways.Preferably, do not change or only limitedly pass through the setting that regulates setting changing compressed air removable or the second main burner to supply with.For fear of at shed open porch pitch of the laps, preferably, to removable main burner confession compressed-air actuated pressure ratio to fixing main burner the compressed-air actuated pressure of confession high.In one embodiment, first specifically fixes main burner only can be set in and auxiliaryly from weft accumulator, to pull out weft yarn, and second specifically removable main burner weft yarn is blown into shed open.
According to another embodiment, in the time that weft yarn insertion becomes unstable, the standard setting that regulates the compressed air of at least a set of relay nozzle to supply with, particularly, postpones the interruption of the compressed air supply of at least a set of relay nozzle.Preferably, as the content of this invention of WO2007/057217(is incorporated in this description whereby) as described in, according in weft yarn transportation, this being betransported the measurement of weft yarn, is further postponed or the interruption of the compressed air supply of at least a set of relay nozzle in advance with respect to standard setting.If it is stable that weft yarn inserts, standard setting can be conditioned, and particularly, the period that the compressed air of respective nozzle is supplied with can be shortened, and in other words, compared with the weaving cycle, the interruption that the compressed air under standard setting is supplied with can be by advance.This adjusting can be repeated until that weft yarn insertion becomes unstable.In the time that weft yarn insertion becomes unstable, standard setting can regulate by the period that extends air supply, particularly, by postponing the interruption of complete relay nozzle air supply, and/or regulated the air supply of main burner device to regulate.Therefore the limit value that, reduces relay nozzle air supply is determined.According to preferred embodiment, user or operator can select the standard setting of at least a set of relay nozzle can be subject to the impact of which kind of degree.Such as, user or operator can select between slight effect, moderate influence or severe impact.
Preferably, provide continuous many covers relay nozzle, wherein, the standard setting that the compressed air that adopts abdomen shape pattern or abdomen shape curve adjustment to overlap relay nozzle is supplied with more.According to the present invention, abdomen type, abdomen shape pattern or abdomen shape curve are defined as a kind of pattern, according to this pattern, a row continuously in the relay nozzle of cover, be arranged on the impact that near complete relay nozzle shed open center is subject to than the complete relay nozzle that is arranged on shed open side larger.Such as, if nine cover relay nozzle are provided, the 4th, 5th and the 6th cover is the most influenced, and the the the 1st, the 2,8th and the 9th cover is not subject to or is influenced hardly, and the 3rd and the 7th cover is subject to minimal effect.Again such as, select a kind of abdomen shape pattern, make its with respect to center that cover relay nozzle be symmetrical.Such as, at the complete relay nozzle place in centre position, during the first step setting of break period point be adjusted to make its with respect to before the complete relay nozzle in centre-standard point break period of the 5th cover relay nozzle in the time that nine cover nozzles is provided early occurs 5%.For the 1st, 2nd, the 8th and the 9th overlaps relay nozzle, and first some break period of air supply can remain unchanged, and can be selected and early occur 1% for the 3rd and the 7th cover relay nozzle, early occurs 3% and put the break period of the 4th and the 6th cover to be selected.If weft yarn inserts and still keeps stable after regulating, break period, point can further be conditioned, and became unstable or until reached the limiting value that break period, point regulated until weft yarn inserts.Can set limiting value according to selected impact.Such as, in the time being chosen to be slight effect and setting, the limiting value of dark belly point can be set in 30%, for the complete relay nozzle in centre position.In the time being chosen to be average or severe impact and setting, the limiting value of dark belly point can be set in respectively 40% or 50%.In addition can regulate according to the measurement of the inserting weft to definite, the setting of every inserting weft.Such as, in the time slow weft thread being detected, adopt than actual interrupt time point more late in the time quick weft yarn being detected.Such as, according to complete be wound around weft yarn (such as the second latitude around yarn) unwinding time point or in moment and weaving cycle before time difference between selected time point, can distinguish at a slow speed and weft yarn fast.In the time slow weft thread being detected, the time point between the optional standard time point that is positioned according to the present invention the initial setting of the adjusted standard time point of the standard setting regulating and the primary standard time point that operator sets-is in other words as the time point that interrupts air supply.
According to another embodiment, in the time detecting that unstable weft yarn inserts, standard setting is reset to standard setting before, particularly, resets to the standard setting before standard setting before.Such as, first 5% of the complete relay nozzle air supply in employing minimizing centre position abdomen shape pattern, and in each continuous adjusting, the time point of the air supply of the complete relay nozzle in air supply period minimizing 5% or interruption centre position is set to morning 5%.If detect that unsettled weft yarn inserts, adopt the abdomen shape pattern of two kinds of adjustings to be adopted once again before,, if accepted standard is set the air supply period of the complete relay nozzle of center is reduced to 25%, be shortened 15% standard setting and still detect that wild effect, the setting having adopted can be reset to the air supply period of the complete relay nozzle of centre.Clearly, before unstable generation or at that time, the still standard setting of adjustable main spray nozzle device, after this, the more substantial minimizing of air supply of relay nozzle can occur, in other words, abdomen type or abdomen shape pattern greatly.
Stable weft yarn inserts and is therefore confirmed as following insertion: wherein can not occur unstable, more specifically, the error of wherein can not weaving.According to an embodiment, unsettled weft yarn is inserted through at least one weaving error of detection and is confirmed.Such as, according to the present invention, weaving error, is also referred to as weaving irregular, and it is defined as following situation: wherein the front end of weft yarn does not obtain enough supports to allow weft yarn to betransported through shed open under extended configuration.
Such as, time difference when measured time point and inserting weft arrive the second measurement point in the time that inserting weft arrives the first measurement point between measured time point, while exceeding predetermined threshold, detects weaving error.Average time when measured time point and inserting weft arrive the second measurement point in the time that inserting weft arrives the first measurement point between measured time point is poor while exceeding predetermined threshold, weaving error also can be detected.
Such as, when the Expected Arrival Time point of inserting weft of measurement point and at least one weft yarn of this measurement point record time difference between the some time of advent while exceeding predetermined threshold, weaving error detected.Multiple measurement points can be defined as, and wherein can in shed open and/or in shed open end, select each measurement point.According to an embodiment, such as, measure weft yarn at the unwinding time point at for example weft accumulator place and arrive the time point such as shed open exit measurement point, and definite time difference.According to an example, the time difference between the signal when determining penultimate the 4th signal around yarn during around yarn and weft yarn arriving the detector that is arranged on shed open exit around five, yarn-.In addition or alternatively, determine that last is around i.e. the 5th time difference between in the time that yarn and weft yarn arrive aforesaid detector of yarn-in this example.In the situation that filling speed is constant, arbitrary these two also substantially constants of time difference.When reducing when filling speed towards shed open end, one or each aforementioned time difference will increase, and therefore can sum up, and weft yarn is not sufficiently supported.
According to a preferred embodiment, the average arrival time point of some insertions is determined, if and inserting weft arrives the expected time point of measurement point and the time difference between the average arrival time point of this measurement point while exceeding predetermined threshold, weaving error detected.Preferably, as described in WO2006/114187, for determining that multiple weft yarns of average arrival time point insert the deviation being adjusted between the value of measuring during different insertion.
According to another embodiment, in the time reaching the limiting value of at least one setting, confirm that unsettled weft yarn inserts.The limiting value that reaches the standard setting of complete relay nozzle in basis is determined in the process of unsettled weft yarn insertion, can reduce the compressed air of main burner device supplies with, particularly, can in the weaving cycle, interrupt in advance the time point of the air supply of main burner device.After reducing the air supply of main burner device, the compressed-air actuated supply of complete relay nozzle can further be reduced, and particularly, can in the weaving cycle, interrupt in advance the time point of the air supply of complete relay nozzle.This allows the further minimizing of the air supply of complete relay nozzle, again becomes unstable until weft yarn inserts.
Preferably, in the time that the average speed of inserting weft changes, particularly, and when its speed slows down, the setting that regulates the compressed air of main burner device and/or at least a set of relay nozzle to supply with.Insert the change of average speed in order to offset weft yarn, can change the power of blowing of main burner device, i.e. the throughput of pressure and/or time per unit.For example in WO2007/071350, described the method for offsetting the change of average speed, the content of the document is incorporated into this.In the time that by particular yarn type, particularly single thread is weaved, in the time casting off a spool, filling speed rises.This rising can be offset by weakening of the power of blowing.In other cases, the average speed of weft yarn weakens.According to the method described in WO2007/071350, in order to keep average insertion speed or weft yarn to arrive the velocity level's of measurement point substantially constant, correspondingly increase or weaken the throughput of pressure and/or time per unit.For fear of the conflict between two kinds of regulative modes, wherein a kind of method can be interrupted or stop under given conditions.Such as, if reach the limiting value of the throughput of adopted pressure and/or time per unit, can stop the adjusting of the standard setting to air supply.
According to further embodiment, such as, as described in WO2007/071350, the standard setting of supplying with according to the compressed air of main burner device and/or at least a set of relay nozzle regulates the weaving speed of loom.Again, regulate the method for weaving speed for fear of being intended to offset the change of average weaving speed and the control method that does according to the present invention between conflict, one of two kinds of methods of interrupting or stopping under given conditions.Such as, if reach the limiting value of weaving speed, can stop the adjusting of the standard setting to air supply.
Can also realize above-mentioned purpose by the air-jet loom that comprises main burner device and at least a set of relay nozzle, wherein this air-jet loom comprises a kind of device, and this device has adopted the method for the standard setting of the compressed air supply that regulates main burner device and at least a set of relay nozzle.
Preferably, air-jet loom comprises the device that contains control module and multiple cutout valves that can controlled unit control.Cutout valve allows the adjusting to air supply, allows particularly to interrupt the air supply to specific complete relay nozzle and/or main burner device.
Preferably, main burner device comprises fixing main burner or attached main burner and removable main burner.
accompanying drawing explanation
Further aspect of the present invention and advantage are by by being manifested the description of the illustrative embodiments that limits shown in accompanying drawing and in dependent claims below.
Fig. 1 shows according to the schematic diagram of a part for air-jet loom of the present invention.
Fig. 2 shows to main burner device and overlaps continuously relay nozzle and supply with compressed-air actuated standard setting figure.
Fig. 3 show after adjusting to main burner device and continuously cover relay nozzle supply with compressed-air actuated standard setting figure.
Fig. 4 show after further adjusting to main burner device and continuously cover relay nozzle supply with compressed-air actuated standard setting figure.
Fig. 5 show another kind of after further regulating to main burner device and continuously cover relay nozzle supply with compressed-air actuated standard setting figure and actual set figure.
Fig. 6 show after the adjusting on the time point further regulating to the compressed-air actuated standard setting figure of main burner unit feeding.
Fig. 7 shows the compressed-air actuated standard setting figure and the actual set figure that supply with to continuous cover relay nozzle after the adjusting on the time point further regulating at another.
The specific embodiment
The shed open 1 that Fig. 1 shows a kind of indicative icon through air-jet loom transports or the device of inserting weft.This device comprises two feed paths 2,3 that weft yarn 4 or 5 is provided respectively.Each feed path 2,3 all comprises yarn buffer 6, weft accumulator (prewinder) 7 and comprise main burner 8 and the main burner device 70 of attached main burner 9.Main burner 8 and attached main burner 9 are installed in series near shed open 1, and particularly, according to the moving direction of weft yarn, main burner 8 is arranged near shed open 1, and before attached main burner 9 is arranged on main burner 8.Main burner 8 is also referred to as second or removable main burner, and attached main burner 9 is also referred to as first or fixing main burner.In addition air-jet loom comprises reed (reed) 10, is wherein provided with guiding channel 40, thus allow via this guiding channel 40, utilize compressed air to pass shed open 1 transported weft thread.Near this guiding channel 40, the relay nozzle 11,12,13,14,15,16,17,18 and 19 of continuous cover is installed along shed open 1, particularly, described nozzle is installed to utilize air for continuous support shute along guiding channel 40.
As shown in Figure 1, cutout valve 21,24,28,31,32,33,34,35,36,37,38 and 39 and choke valve 22,25,26 and 29 controlled by the control module 42 of air-jet loom.Such as, cutout valve is the electromagnetic valve of can controlled unit 42 controlling.In this case, choke valve can be designed so that they can be driven and be controlled by control module 42 by motor.Adopt the device 71 of the method according to this invention at least to comprise control module 42 and multiple described cutout valve.
Such as, yarn detector 41 is connected with control module 43 by connecting line 44.Control module 43 is connected with control module 42 by connecting line 45.According to the unshowned modification of one, control module 42 and control module 43 can be served as a part for an independent control unit.Cutout valve is connected with control module 42 by sharing connecting line 50 with choke valve.Each weft accumulator 7 comprises needle 46 to discharge the weft yarn 4 or 5 of desired length at expected time point.Needle 46 is connected with control module 42 by sharing connecting line 49.
Fig. 1 also shows near the yarn detector 47 each weft accumulator 7, at every turn around yarn 48 from weft accumulator 7 around cylinder unwinding time, more specifically, a part for each weft yarn arrive or along yarn detector 47 through out-of-date, this yarn detector 47 sends signal to control module 43.This yarn detector 47 is also referred to as around yarn sensor.In this example, the signal of yarn detector 47 is imported into control module 43 by connecting line 57.Obtain betransporteding the measurement of weft yarn 4,5 in the process of this weft yarn 4,5 of transportation by the signal of yarn detector 47 herein.Accordingly, with respect to reference time point, more specifically, so-called around yarn time point, the time point that arrives yarn detector 47 around yarn 48 is measured.Such as, the time point that is triggered to discharge weft yarn 4 or 5 with respect to needle 46 is measured the time point through yarn detectors 47 around yarn 48, and this time point is to represent around yarn time point.The continuous signal of yarn detector 47 can be used as the measured value that betransported weft yarn 4,5 in transportation.Accordingly, can measure or the one or more absolute times around yarn of definite unwinding.
Alternatively, the front end that multiple yarn detectors 54,55,56 can be mounted to detect weft yarn along guiding channel 40 when arrive these yarn detectors one of them. Yarn detector 54,55,56 can act synergistically by connecting line 51 and control module 43.
As shown in Figure 1, air-jet loom also comprises input block 52, and it makes to input some parameters becomes possibility.Control module 42 is used to carry out display parameters by display unit 53.Such as, connecting line 49,50,51 and 57 can be CAN-bus.
Such as, in the time that weft yarn 4,5 betransported through shed open 1, cutout valve 21,24,31 to 39 are triggered according to chart as shown in Figure 2.In this example, cutout valve 31 to 39 is by continuous trigger.For air-jet loom, conventionally weave with the weaving speed magnitude of 800 to 1200 weft yarns per minute, change kind of expression, such as, for the weaving width of two meters, 1400 to 2800 meters per minute.In the time of the irregular weft yarn of weaving, such as, in the time of the spinning inserting weft of weaving, for the continuous weft from feed path 2 or 3, the insertion parameter recording may be quite different according to the difference of weft yarn, in other words,, in the weaving cycle, the time point that specific weft yarn arrives yarn detector is different.
Fig. 2 shows by piece 61 to 69, the 9 cover relay nozzle 11 to 19 that represent with BB11 to BB19 are respectively supplied to the compressed-air actuated period, in other words, open cutout valve 31 to 39 as shown in Figure 1 to provide the compressed-air actuated period to the relay nozzle 11 to 19 of relevant cover.Provide the compressed-air actuated period to main burner 8 and attached main burner 9, represented by piece 20 and 30 respectively, be expressed as MMN8 and FMN9.WO2007/057217 has explained the more details of this, and the content of WO2007/057217 is incorporated to the application by reference.Piece 20,30 and 61 to 69 has been determined the time point that starts air supply and the time point that interrupts the air supply of respective nozzle.In Fig. 2, the time represents with 0 to 360 position, degree angle of loom main shaft.A time point in the corresponding weaving cycle of position, each angle, in other words a time in the corresponding weaving cycle of position, each angle.
In Fig. 2, line 58 represents the mobile route of normal weft, and line 59 represents the mobile route of quick weft yarn, and line 60 represents the mobile route of slow weft thread.Line 58,59 and 60 can be determined according to the standard setting of many covers relay nozzle of Fig. 2 during weaving a large amount of weft yarns-such as several thousand weft yarns.Time point TG is the definite reference time point in the weaving cycle, such as, the specific seclected time in the weaving cycle after loom arrival specific angle position.The meaning of TG will be explained hereinafter in more detail.
If complete weaving with the loom predetermined or that primary standard is set being set according to the break period point of Fig. 2 and/or period, and be activated according to method of the present invention, preferably, set and be automatically adjusted as setting according to the preassigned after the adjusting of Fig. 3 according to the preassigned of Fig. 2, be after this called " standard setting after adjusting ".Adopt and be somebody's turn to do " standard setting after adjusting ", in the weaving cycle, supply with and be interrupted to such an extent that set more Zao than adopting according to the primary standard of Fig. 2 to the compressed air of at least a set of given trunk nozzle.
Fig. 3 shows the standard setting after the preferred adjusting with abdomen shape pattern.According to standard setting as shown in Figure 3, the setting of the relay nozzle of center, i.e. the cover of that in embodiment as shown in Figure 1 relay nozzle 15, is conditioned by shortening 5% of the air supply period.The air supply period of the described cover relay nozzle 14 and 16 of two cover relay nozzle-be that Yu Gaitao center relay nozzle is adjacent is shortened 3%.The period of next-door neighbour's the described cover relay nozzle 13 and 17 of two cover relay nozzle-be is only shortened 1%, and the period of the described cover relay nozzle 11,12,18 and 19 of and a few cover relay nozzle of side-be is not shortened at this adjusting time point.The air supply period shortening as shown in Figure 3.For the sake of clarity, be represented by dotted lines in Fig. 3 according to the standard setting before the adjusting of Fig. 2.
Such as, similar with the mode described in WO2007/057217, for the situation of slow weft thread; such as; after time point TG, arrive the weft yarn of measurement point, this slow weft thread will be inserted into according to setting as shown in Figure 2, and normal or quick weft yarn will be inserted into according to the setting according to Fig. 3.
According to the present invention, adjustment criteria is set, and observes the stability that weft yarn inserts.While seeming to stablize after weft yarn is inserted in regulating step, can actual standard be set and further be regulated.When finding that weft yarn inserts when unstable, performed adjusting is cancelled, and/or press the setting of opposite direction adjustment criteria.Therefore, the standard setting of the air supplies of extremely described many cover relay nozzle 11 to 19 and/or main burner 8,9 is optimised.
According to a preferred embodiment, in order to make compressed air supply with optimization, adopt the standard setting after regulating, supply with and be reduced to the compressed air of fixing or attached main burner 9.Preferably, the minimizing of supplying with to the compressed air of attached main burner 9 completed by the air supply period shortening as shown in the chain-dotted line of the piece 20 in Fig. 3.For the porch guiding weft yarn at shed open suitably enters shed open, preferably do not reduce the compressed air of main burner 8 and supply with the period.
When the air supply period of the main burner 8 and/or 9 of at least a set of relay nozzle 11 to 19 and/or main burner device 70 reduces but weft yarn inserts while still keeping stablize, the compressed air supply period of the main burner 8 and/or 9 of at least a set of relay nozzle 11 to 19 and/or main burner device 70 can further be reduced.Select accordingly or as a kind of, overlap at the most the compressed air of relay nozzle 11 to 19 and supply with and can further be reduced.Preferably, overlap at the most relay nozzle 11 to 19 compressed air supply with minimizing complete by the setting with abdomen shape pattern (belly pattern).
Fig. 4 and Fig. 5 schematically show according to an embodiment of the invention second and the 3rd and regulate time point, and wherein with respect to setting as shown in Figure 2, the break period in the weaving cycle is by advance.For the sake of clarity, regulate the standard setting of previous Fig. 2 to be represented by dotted lines in Fig. 4 and Fig. 5.Can adopt foregoing " standard setting " at very first time point, as shown in Figure 3.Keep stable if weft yarn inserts, further shifted to an earlier date the break period of overlapping at the most the air supply of relay nozzle 11 to 19.In embodiment as shown in Figure 4 and Figure 5, the break period of that cover relay nozzle 15 in the embodiment as shown in Figure 1 of Gai Tao center relay nozzle-, regulate by regulating time point to shorten air supply period of 10% or 15% with respect to the example of Fig. 2 second and the 3rd respectively.Two cover relay nozzle of next-door neighbour center relay nozzle, the air supply period of described cover relay nozzle 14 and 16 regulates time point to be shortened 6% and 9% with respect to the example of Fig. 2 second and the 3rd respectively.Ensuing two cover relay nozzle, the air supply period that is described cover relay nozzle 13 and 17 regulates time point to be shortened 2% and 3% with respect to the example of Fig. 2 second and the 3rd respectively, and many covers of side relay nozzle, be described many cover relay nozzle 11,12,18 and 19 period is not shortened.The air supply period reducing as shown in Figures 4 and 5.Certainly, also can adopt other abdomen shape pattern.Detect after regulate according to the standard setting after the adjusting of Fig. 5 when unsettled weft yarn inserts, standard setting can be reset the standard setting into before, such as, reset to the standard setting shown in Fig. 3.According to a kind of modification, can be reset accordingly as the standard setting shown in Fig. 4 according to the standard setting of Fig. 5.
Such as; similar with the mode described in WO2007/057217; for the situation of slow weft thread; such as; after time point TG, arrive the weft yarn of measurement point; this slow weft thread is inserted in setting shown in the chain-dotted line of the piece 64,65 and 66 in employing Fig. 5, inserts normal or quick weft yarn and adopt according to the standard setting of Fig. 5.
Select as one, as shown in Figure 6, if unsettled weft yarn insertion detected in the time adopting according to the standard setting of Fig. 5, can avoid unstability by the winding-up period that reduces attached main burner 9.Piece 20 in Fig. 6 shows the winding-up period of attached main burner 9, and the winding-up period of minimizing represents with solid line, and the period of initially jetting is represented by dotted lines.More specifically, interrupting the time point of the extremely compressed air supply of attached main burner 9 or the moment in the weaving cycle can be by advance.Such as, the weft yarn of measuring according to yarn detector 41 arrives the average deviation of time and the last time difference between the yarn time that yarn detector 47 is measured of shed open end, completes adjusting.The time point that weft yarn arrives shed open end is also referred to as the TA time of advent.Detect that at yarn detector 47 places last is also referred to as finally around yarn time T LW around the time point of yarn.
According to an embodiment, regulate the function of the break period point of attached main burner 9 can be chosen to be with respect to primary standard set have the time of advent TA and the deviation of last current difference between yarn time T LW 50%.Such as, if time difference TA-TLW=1 millisecond be denoted as primary standard set, and for regulate after standard setting time difference TA-TLW=3 millisecond, the winding-up time of attached main burner 9 can be shortened (3-1) millisecond or 1 millisecond 50%.In other words,, in this example, the break period of the attached main burner 9 in the weaving cycle is by 1 millisecond in advance.This break period point in advance can average time poor be basis, and can adopt with described in WO2006/114187 similarly method to utilize mean value.
Another selection of above-mentioned example is can be shortened until TA-TLW value reaches again 1 millisecond by every step 0.5 millisecond the winding-up time of attached main burner 9.Select according to another, the winding-up time that the winding-up time of attached main burner 9 can each attached main burner 9 5% by step by the section of calculation until TA-TLW value reaches again desired value.
In the time that weft yarn insertion is not stablized yet after this adjusting, can shorten further the winding-up time of attached main burner 9.If weft yarn inserts stable, the winding-up time of overlapping relay nozzle 11 to 19 can be shortened further.Such as, by reducing the winding-up time of attached main burner 9, can adopt abdomen shape pattern as shown in Figure 7 for example Dui Gaitao center relay nozzle 15 regulated for the 30% winding-up time that further shortens many cover relay nozzle 11 to 19.In the embodiment of Fig. 7, the winding-up time of this cover relay nozzle 12 is also shortened.
If insert and become unstable under this setting, the specifically standard setting of the setting of attached main burner 9 before can being again adjusted to of the setting of many cover relay nozzle 11 to 19 and/or main burner device 70-.
According to an embodiment, in the time reaching at least one preestablished limit value, confirm that unsettled weft yarn inserts.
In addition,, for attached main burner 9, the maximum minimizing of winding-up time can be set at respect to 20% of primary standard setting or any other value of the time of initially jetting.Preferably, set in advance limited field, such as in the time selecting the slight effect of main burner device 70, the limit before reducing can be set in 15%, and in the time selecting average or high impact, the limit of minimizing can be set in respectively 20% or 25%.
Such as, the stability of inserting in order to observe weft yarn, can measure and arrive one or more weft detectors 41,47,54,55, and 56 time, can compare the time of advent recording with the expected approach time of inserting weft.If the time difference recording between time and expected time exceedes threshold value, can assert that weaving error may occur, and weft yarn insertion is unsettled.
According to an embodiment, the time in the unwinding time of the weft yarn at weft accumulator 7 places and arrival shed open 1 exit, measure by yarn detector 47 and 41 respectively, and the time difference is determined.If the time difference exceedes threshold value, can assert that weaving error may occur, and weft yarn insertion is unsettled.
For fear of measure error and unstable adjusting, determine the average arrival time of some specific insertions, and when inserting weft arrives the expected time of measurement point and arrives time difference between average time of this measurement point while exceeding predetermined threshold, can assert and have weaving error.
As previously mentioned, slow weft thread and quick weft yarn can be distinguished by the weaving techniques according to WO2007/057217.According to the specific measurement that betransported weft yarn, after the time point that compressed-air actuated supply is specified in institute's accepted standard setting, be interrupted, if determine that weft yarn relatively at a slow speed betransported through shed open 1.In this case, in transportation slow weft thread process, the compressed-air actuated supply period of many cover relay nozzle is set and is extended with respect to institute's accepted standard.
Such as, can and detect through definite compressed air of specific time difference around the time point of yarn of yarn detector 47 based on for example predetermined point of time TG and supply with the time or the period that are extended.Time point TG is the scheduled time or the threshold value for the reference time point in the weaving cycle, such as, specific specific seclected time of the point that normally passes through yarn detector around yarn in the specific seclected time after loom arrives the time point of the specific angle position in the weaving cycle or weaving cycle.Based on this object, time point TG can be inputted by the input block 52 in control module 42, is optimized, or carry out manual adjustment in the mode described in WO2007/057217 by operator by control module 42.
Embodiment as shown in Figure 7, suppose that weft yarn has five length around yarn, wherein respectively t1w around yarn signal, t2w, t3w, t4w and t5w, and such as, the second signal t2w around yarn, the in other words secondary signal of yarn detector 47, is used to control the interruption that the compressed air of certain set relay nozzle is supplied with.In this case, the second time point around yarn signal t2w will be compared with the time point TG in the weaving cycle.
If this second recording after signal t2w occurs in the time point TG in the weaving cycle around yarn, that is, insert weft yarn relatively at a slow speed, the compressed air of complete relay nozzle 13 to 17 is supplied with and will be interrupted subsequently, such as, this period can be extended to the actual set as shown in chain-dotted line in Fig. 7.In other words, supply with and be extended to the compressed air of complete relay nozzle, and interrupt being postponed with respect to the standard setting after the adjusting as shown in solid line in Fig. 7.The mode that the confession of this prolongation is given described in WO2007/057217 occurs.
According to a kind of modification; also as described in WO2007/057217; slow weft thread by for interrupt compressed air supply with adjusting after standard setting be inserted into; such as; standard setting in Fig. 6; and normal or quick weft yarn is inserted into by actual set, the interruption that wherein compressed air is supplied with is advanced in the weaving cycle time point more early, such as the time point in more Zao weaving cycle of the standard setting time point than in Fig. 6.
When this second around yarn record the time point TG of signal t2w in the weaving cycle or its before occur;; normally or relatively fast weft yarn is inserted into, and supplies with to the compressed air of complete relay nozzle 13 to 17 interrupting according to the predetermined standard setting being employed as shown in solid line in Fig. 7.
Clearly, a set of relay nozzle can comprise at least one independently relay nozzle or multiple relay nozzle of being connected with compressed air source by relevant cutout valve.The device of supplying with for compressed air can be arbitrary device of setting, controlling or regulate compressed air to supply with.According to disclosing of EP442.536B1 or WO2006/077063, the adjusting that the compressed air of main burner 8 or attached main burner 9 is supplied with can comprise operated throttle valve 22 and 25 in the following manner, such as each weft yarn on average arrives such as yarn detector 41 places at identical time point in the weaving cycle.For example this means, for example, even if do not consider the change (this may occur under the situation of filament weft yarn) of the character of the weft yarn of insert continually, the line 58 of average weft mobile route is not as shown in Figure 2 because continuous weft changes.
The present invention allows to carry out adjustment criteria setting so that the time point of the air supply of at least one main burner 8,9 of interruption at least a set of relay nozzle 11 to 19 and/or main burner device 70 is shifted to an earlier date according to consecutive steps.The continuous adjusting of standard setting can stop, if determine that insertion is unstable, if or reach the advance limitation value of the interruption of at least a set of relay nozzle, such as Dui Gaitao center relay nozzle reaches 30%, 40%, 50% or 60%, if and/or reach the advance limitation value of the interruption of main burner, such as fixing main burner 9 is reached to 15%, 20% or 25%.If for example adopt the present invention and in conjunction with the method described in WO2007/071350, the adjusting of standard setting can stop, if if force value and/or time per unit air flow value reach, it is peaked such as 98% and/or reduced particular percentile carrying out loom speed during method of the present invention, such as 3% or 5%.
If 30% of a set of relay nozzle limiting value in above-mentioned center is provided, such as, the method according to this invention can progressively be employed until reach 40% limiting value by each 5%.If adopt 40% wild effect does not occur yet, can be limited to again 30% setting limiting value.In this case, the standard setting after adjusting is reset to two adjustings standard setting before, is consistent accordingly with 30% limiting value.If wild effect occurs while being set in 35%, for the consideration of safety and reliability, can reset to 25% or two adjustings before value, although do not observe wild effect when 30% limiting value yet.
Certainly, the invention is not restricted to the application of the standard setting as shown in Fig. 2 to 7, other standards also can be set and set.Such as, according to a kind of possibility, control module 42 can be transfused to: to which cover relay nozzle can regulate, such as to described a set of relay nozzle 17.The setting that this means many cover relay nozzle 17,18 and 19 is not conditioned according to the present invention.Any also can input: can carry out the adjusting of standard setting from cover relay nozzle, such as from described a set of relay nozzle 13.The setting that this means complete relay nozzle 11 and 12 can not regulate according to the present invention.Such as, according to another kind of possibility, can input or avoid: the setting of certain set relay nozzle can not be conditioned according to the present invention.
Clearly, adjustment criteria is set and is nonessential with every step 5%, and 3% or 1% carries out, but can regulate in every way, such as, regulate according to the different functions of preserving in control module 42 for example.
According to the unshowned modification of one, the standard setting of the cutout valve 28 of restrained stretching nozzle 27 also can the method according to this invention be determined and be regulated.
According to all representing with the angle of loom main shaft for supplying with compressed-air actuated every width figure to above-mentioned continuous cover relay nozzle of Fig. 2 to 7.In the time knowing the speed of loom, every width figure can be converted to chronomere easily, i.e. millisecond.
The method according to this invention has following advantage: air consumption roughly can reduce.According to the present invention, with respect to initial setting, save most of compressed air than near the relay nozzle of earlier interrupting being roughly arranged in shed open center in excentral complete relay nozzle.
Clearly, air-jet loom is not limited only to weft yarn and is blown into by compressed air the air-jet loom of guiding channel 40.The complete relay nozzle of air-jet loom also can be set on the weft gripper through shed open transported weft thread.In addition,, as common compressed-air actuated substituting, the fluid of any expectation can be used to weft yarn to insert the shed open of the type loom.In this case, also can use the common compressed air that mixes a kind of gas, liquid or steam.
Clearly, no matter this description is mentioned the fact of time, the angle that this time also can loom represents.In this case, such as, the angle of loom corresponding to some milliseconds or one millisecond corresponding to some angles.
Clearly, the method according to this invention can be used in weft yarn 4 or 5 insertion of arbitrary.Accordingly, for every weft yarn 4 or 5, can provide a width independently to scheme, supply with for the compressed air to continuous cover relay nozzle and/or main burner device 70.The figure that inserts every weft yarn can differ from one another, particularly, if weft yarn 4 or 5 is weaved with different weaving speed or travelling speed.Particularly, in the time that loom speed is conditioned for being inserted into weft yarn, can adopt this scheme.Certainly,, if use the weft yarn of one or more types, also can adopt the method according to this invention.
The embodiment (be illustrated and described) that is not limited to be given as examples according to the method for the present invention limiting in claim and air-jet loom, but also comprise modification and the combination in the scope that falls into claim.
Claims (13)
1. one kind for inserting weft yarn (4,5) method of shed open of air-jet loom, described air-jet loom comprises main burner device (70) and at least a set of relay nozzle (11 to 19), wherein supplying with compressed-air actuated predetermined set to described main burner device and/or at least a set of relay nozzle (11 to 19) is determined, wherein during weaving
-supply with compressed-air actuated predetermined set to described main burner device (70) and/or at least a set of relay nozzle (11 to 19) to be conditioned to reduce compressed-air actuated supply,
In the situation of the predetermined set after-employing regulates, can observe the stability that weft yarn inserts, stable weft yarn inserts the insertion of the error that is confirmed as can not weaving, unsettled weft yarn is inserted through at least one weaving error of detection and confirms, described weaving error is such a case, the front end that is weft yarn does not obtain enough supports to allow weft yarn to betransported through shed open under extended configuration
-supply with compressed-air actuated predetermined set to described main burner device (70) and/or at least a set of relay nozzle (11 to 19) to be conditioned, until inserting, weft yarn becomes unstable,
-in the time detecting that unsettled weft yarn inserts, the predetermined set before predetermined set is reset to.
2. the method for claim 1, it is characterized in that, in order to regulate described predetermined set, according to the measurement that is inserted into weft yarn (4,5) being regulated to the interruption of supplying with to the compressed air of described main burner device (70) and/or at least a set of relay nozzle (11 to 19).
3. method as claimed in claim 1 or 2, is characterized in that, in the time that weft yarn insertion becomes unstable, regulates to the compressed air of described main burner device (70) and supplies with.
4. method as claimed in claim 1 or 2, is characterized in that, described main burner device (70) comprises the first main burner (9) and the second main burner (8), wherein, in the time that weft yarn insertion becomes unstable, regulates the air supply to the first main burner (9).
5. method as claimed in claim 4, is characterized in that, wherein, in the time that weft yarn insertion becomes unstable, reduces the air supply to the first main burner (9).
6. method as claimed in claim 1 or 2, it is characterized in that, in the time that weft yarn insertion becomes unstable, the interruption of supplying with by the compressed air of at least a set of relay nozzle of delay (11 to 19) regulates the predetermined set of the air supply of at least a set of relay nozzle (11 to 19).
7. method as claimed in claim 1 or 2, it is characterized in that, continuous many covers relay nozzle (11 to 19) is provided, the predetermined set that wherein adopts abdomen shape pattern to regulate the compressed air of described many cover relay nozzle (11 to 19) to supply with, according to described abdomen shape pattern, a row continuously in the relay nozzle of cover, be arranged on the impact that near complete relay nozzle shed open center is subject to than the complete relay nozzle that is arranged on shed open side larger.
8. the method for claim 1, it is characterized in that, time difference in the time that inserting weft (4,5) arrives time point measured when the first measurement point and inserting weft (4,5) and arrives the second measurement point between measured time point, while exceeding predetermined threshold, detects weaving error.
9. the method as described in claim 1 or 8, it is characterized in that, average time in the time that inserting weft (4,5) arrives time point measured when the first measurement point and inserting weft (4,5) and arrives the second measurement point between measured time point is poor while exceeding predetermined threshold, weaving error detected.
10. method as claimed in claim 1 or 2, is characterized in that, supplies with compressed-air actuated predetermined set and is conditioned, until reach at least one limiting value of predetermined set to described main burner device (70) and/or at least a set of relay nozzle (11 to 19).
11. 1 kinds comprise the air-jet loom of main burner device (70) and at least a set of relay nozzle (11 to 19), it is characterized in that, this air-jet loom comprises the device (71) that adopts method as described in any one in claim 1 to 10.
12. air-jet looms as claimed in claim 11, is characterized in that, described device (71) comprises the cutout valve (21,24,28,31 to 39) that control module (42) and multiple energy controlled units (42) are controlled.
13. air-jet looms as described in claim 11 or 12, is characterized in that, described main burner device (70) comprises fixing main burner (9) and removable main burner (8).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE2009/0325 | 2009-05-27 | ||
| BEBE2009/0325 | 2009-05-27 | ||
| BE2009/0325A BE1018762A3 (en) | 2009-05-27 | 2009-05-27 | METHOD FOR INSERTING AN IMPRESSION THREAD AND AERIAL WEAVING MACHINE. |
| PCT/EP2010/003212 WO2010136194A1 (en) | 2009-05-27 | 2010-05-26 | Method for inserting a weft thread and airjet weaving machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102449216A CN102449216A (en) | 2012-05-09 |
| CN102449216B true CN102449216B (en) | 2014-06-04 |
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ID=41785807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080023356.7A Active CN102449216B (en) | 2009-05-27 | 2010-05-26 | Method for inserting a weft thread and airjet weaving machine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2435609B1 (en) |
| CN (1) | CN102449216B (en) |
| BE (1) | BE1018762A3 (en) |
| WO (1) | WO2010136194A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6135731B2 (en) * | 2015-09-16 | 2017-05-31 | 株式会社豊田自動織機 | Method of monitoring weft flying condition in air jet loom |
| BE1023583B1 (en) * | 2015-11-06 | 2017-05-09 | Picanol N.V. | Process for introducing a weft thread |
| JP6447533B2 (en) * | 2016-02-19 | 2019-01-09 | 株式会社豊田自動織機 | Weft insertion control method and weft insertion control apparatus for air jet loom |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069302A (en) * | 1991-08-12 | 1993-02-24 | 日产自动车株式会社 | Fluid jet loom and method of operating thereof |
| CN101184877A (en) * | 2005-04-25 | 2008-05-21 | 必佳乐有限公司 | Method for introducing a weft thread in a weaving machine |
| CN101313095A (en) * | 2005-11-21 | 2008-11-26 | 必佳乐有限公司 | Method for introducing a weft thread in an air weaving machine and air weaving machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1003686A3 (en) | 1990-02-15 | 1992-05-19 | Picanol Nv | Device for feeding weft thread in air looms. |
| KR940010634B1 (en) * | 1991-08-12 | 1994-10-24 | 닛산 텍시스 가부시끼가이샤 | Fluid jet loom and method of operating same |
| DE102005004064A1 (en) | 2005-01-21 | 2006-07-27 | Picanol N.V. | Device for introducing weft threads in an air-jet loom |
| EP1951941B1 (en) * | 2005-11-21 | 2013-10-16 | Picanol | Method for introducing a weft thread in an air weaving machine and air weaving machine |
| BE1016900A3 (en) | 2005-12-20 | 2007-09-04 | Picanol Nv | METHOD FOR INSERTING AN IMPRESSION THREAD TO A WEAVING MACHINE AND A WEAVING MACHINE |
-
2009
- 2009-05-27 BE BE2009/0325A patent/BE1018762A3/en not_active IP Right Cessation
-
2010
- 2010-05-26 EP EP10723927.9A patent/EP2435609B1/en not_active Not-in-force
- 2010-05-26 WO PCT/EP2010/003212 patent/WO2010136194A1/en active Application Filing
- 2010-05-26 CN CN201080023356.7A patent/CN102449216B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069302A (en) * | 1991-08-12 | 1993-02-24 | 日产自动车株式会社 | Fluid jet loom and method of operating thereof |
| CN101184877A (en) * | 2005-04-25 | 2008-05-21 | 必佳乐有限公司 | Method for introducing a weft thread in a weaving machine |
| CN101313095A (en) * | 2005-11-21 | 2008-11-26 | 必佳乐有限公司 | Method for introducing a weft thread in an air weaving machine and air weaving machine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2435609B1 (en) | 2017-08-16 |
| BE1018762A3 (en) | 2011-08-02 |
| WO2010136194A8 (en) | 2011-03-17 |
| WO2010136194A1 (en) | 2010-12-02 |
| EP2435609A1 (en) | 2012-04-04 |
| CN102449216A (en) | 2012-05-09 |
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Effective date of registration: 20211116 Address after: No. 2, Songzhuang Road, Suzhou Industrial Park, Jiangsu Province Patentee after: Bijiale (Suzhou Industrial Park) Textile Machinery Co., Ltd Address before: Belgium Ipanema Patentee before: Bijiale company |