CN1004214B - Method for handing weft yarn in shuttleless looms - Google Patents

Abstract

A treatment method for abb of shuttleless loom is characterized in that: under the condition that once warp opening is formed, the abb woven into the fabrics is removed before the loom is stopped. The abb is clamped by a pair of accessible rotating parts arranged on the pulling and leading path of the waste abb, and the rotation extent of the rotary roller is detected when the clamped abb is being pulled and led. If the detected rotation extent falls into the preset range, the treatment of abb pulling and leading is determined to be successful; if the detected rotation extent does not fall into the preset range, the treatment of abb pulling and leading is determined to be failed.

Description

The weft yarn processing method of shuttleless loom

The invention relates to the method that shuttleless looms such as jet loom, Rapier looms and gripper shuttle loom are handled the weft yarn that inweaves fabric before being about to shutdown.

Shuttleless looms such as jet loom are fly-shuttle loom relatively, and higher productivity ratio is arranged, and the tendency of use shuttleless loom is increasingly significant in recent years.But useless latitude phenomenon is more than fly-shuttle loom, and this also is well known fact when useless latitude takes place, and loom is shut down according to the useless latitude signal that weft detector sends.On shuttleless loom loom so at a high speed, consider the damage that reduces each several part, the bent axle inertia turning is more than one week, and loom just can stop, and therefore, the weft yarn (hereinafter to be referred as useless weft yarn) of useless latitude is beaten up by reed before loom is about to stop and inweaving fabric.The aforementioned useless weft yarn that causes fabric float from fabric take out two weft processing equipments the patent application spy open clear and 58-220856 and the clear 59-21757 of Japanese patent application TOHKEMY number on announce.

On the clear 58-220856 of Japanese patent application TOHKEMY number, weft processing equipment knit on the guide rail that width of cloth direction sets up from retreating position to fixed useless weft yarn handle the position and move, device is provided with a group yarn device for the useless weft yarn that inweaves fabric is separated from fabric, make group yarn device slip over fabric, the fell that nuzzles up outside Warp opening enters in the Warp opening, in Warp opening, useless weft yarn is separated from fabric, dial the yarn device and push warp thread aside, draw the useless weft yarn of introducing in the Warp opening, in the Warp opening by warp thread useless weft yarn drawing outside Warp opening, simultaneously, the part of useless weft yarn by drawing to Warp opening outer after, draw the roller clamping by a pair of, drive two and draw roller, all useless weft yarn is pulled out in Warp opening, and the useless weft yarn of pulling out is siphoned away by suction device.

In addition, on the clear 59-21757 of Japanese patent application TOHKEMY number, the wefting insertion that stops the action of loom inertia, the weft yarn that is prevented from is imported between a pair of crimping roller, and the crimping roller is gripped by this, simultaneously, the cut-out function of cutting off the scissors apparatus of weft yarn behind each wefting insertion is temporarily stopped, keeping the state that does not cut off useless weft yarn and follow-up weft yarn.The revolution of aforementioned crimping roller, drawing goes out useless weft yarn in the Warp opening, attracts to exclude useless weft yarn by suction device simultaneously.

On the clear 58-220856 of Japanese patent application TOHKEMY number device, at first requiring to dial the yarn device lives the useless latitude tractive of squeezing into fell, and dial really from fell, employing makes the structure of dialling yarn device motion portrayal sub-elliptical track, want tractive to live useless weft yarn owing to dial the motion of yarn device, separate useless weft yarn from fell, therefore, the action of dialling the yarn device must be extremely delicate, but, both having made the maximum open that forms warp thread, warp thread can not fully be removed the gripping of useless weft yarn, dial the yarn device and rotate that freely to be contained in any be the support head end that the center can be shaken, the middle part of group yarn device moves in a circle to a direction.Although rely on the structure of these complexity to make it describe elliptical orbit, the failure that avoid the useless weft yarn of tractive is difficulty still, if separate useless weft yarn failure, so useless weft yarn is just inweaved fabric, thereby causes fabric quality to descend.

Separate under the weft yarn case of successful from fell by dialling the yarn device, except that aforementioned separating part by group yarn device tractive, remaining weft yarn still is subjected to the gripping effect of warp thread, outside Warp opening, during the useless weft yarn of drawing, produce corresponding opposing tension force, therefore in the Warp opening, in the way of the useless weft yarn of drawing, exist the danger of breaking useless weft yarn owing to aforesaid drawing resistance, make useless weft yarn inweave in the fabric, cause that fabric quality descends.

In the clear 59-21757 of Japanese patent application TOHKEMY number the device, the same situation of in the drawing way, breaking useless weft yarn that occurs owing to the drawing resistance that exists.In aforementioned each device in the past, under the situation that useless weft yarn is broken in Warp opening midway, a part of breaking is stayed in the warp thread, after can not removing, restarts loom, has just formed float.

Therefore, the purpose of this invention is to provide a kind of weft yarn processing method of shuttleless loom, this method can be on the refuse yarn automatic processing method of weft processing equipment in the past, improves fully that institute fails to reach, but the property of refuse yarn processing and efficient etc.

The invention relates to the weft yarn processing method of the shuttleless loom of generalized form.Dismounting is forming under the Warp opening state; inweave the weft yarn of fabric before being about to shut down; be arranged on the useless weft yarn drawing route by a pair of; the revolution roller of being convenient to scoop out clamps weft yarn; the revolution amount of revolution roller when detecting the weft yarn that is held, detected revolution amount judge that the drawing weft yarn handles successfully in predetermined scope; detected revolution amount judges that the drawing weft yarn handles failure not in above-mentioned preset range.

Specifically; among weft yarn processing method-embodiment according to shuttleless loom of the present invention; dismounting is forming under the Warp opening state; inweave the weft yarn of fabric before being about to shut down; under this state; be arranged on the useless weft yarn drawing route by a pair of; the revolution roller of being convenient to scoop out clamps weft yarn; when Weft yarn drawout device aforementioned useless weft yarn in the Warp opening outside Warp opening during drawing, the revolution roller is followed rotation, detects the revolution amount of aforementioned revolution roller; detected amount is in preset range the time; judge that the drawing weft yarn handles successfully, the amount of measuring judges that the processing of drawing weft yarn fails not in above-mentioned scope.

Be in the aforementioned a pair of revolution roller that keeps at a certain distance away, signal according to useless latitude, contact is also clamped useless weft yarn, simultaneously, the Weft yarn drawout device action pulls out useless weft yarn, along with the drawing weft yarn in the warp thread mouth, the revolving body of clipped weft yarn is followed revolution, detects the revolution amount of revolving body according to the revolving body detection means.When outwards the useless weft yarn of drawing normally carried out in Warp opening, therefore the aforementioned revolution amount that detects judged that weft yarn is drawn to handle successfully that loom starts once more in preset range.

In drawing weft yarn way, under the situation that weft yarn is broken, the aforementioned revolution amount that detects is judged thus that weft yarn is drawn to handle failure outside preset range, is stoped loom to be restarted, and give a warning.

In the special embodiment of weft yarn processing method of shuttleless loom of the present invention; dismounting is forming the weft yarn that inweaves fabric before open state is about to shut down; under this state; scoop out and clamp above-mentioned weft yarn and draw by a pair of roller of drawing; derivative weft yarn is detected by the weft yarn detection means; simultaneously; detect in the weft yarn spill process by what the weft yarn detection means detected the revolution amount of drawing roller during the latitude arranged; the revolution amount is in preset range the time; the judgement weft yarn is drawn and is handled successfully; detected revolution amount is the occasion in setting range not, and the judgement weft yarn is drawn and handled failure.

Specifically, it is right to be in the aforementioned roller of drawing that keeps at a certain distance away, according to useless weft yarn signal, be close to and the above-mentioned weft yarn of clamping, begin action simultaneously, weft yarn in Warp opening drawing in the warp thread is gone out, drawing the right revolution amount of roller detects according to revolution amount detection means, in the weft yarn spill process, take out by the weft yarn detection means detect have during the weft yarn in the revolution amount of drawing roller, this revolution amount relatively with predetermined revolution weight range, draw the occasion of normally carrying out when weft yarn, the aforementioned revolution amount that detects judges thus that weft yarn is drawn to handle successfully that loom starts once more in preset range.

Draw in the way at weft yarn, the occasion that situation that weft yarn broken or useless weft yarn are broken takes place, aforementioned detected revolution amount is judged thus that weft yarn is drawn to handle failure, thereby is stoped loom to be restarted, and give a warning beyond setting range.

Below, the 1st embodiment for jet loom of the present invention is specialized is illustrated on the basis of the 1st figure to the 6 figure, and among the figure, prosign is represented same counterpart.

As shown in Figure 1, the 1st, be contained in the main burner that slay 2 distolateral wefting insertion are used, on the disk 4 of Weft yarn clock measuring 3, form around the yarn face, weft yarn on the disk 4 is supplied with by bobbin 5, survey long weft yarn Y through reeling and be imported in the wefting insertion main burner, periodically spray wefting insertion synchronously by the wefting insertion main burner then, weft yarn is introduced in the weft yarn guide channel 6a of stretch nozzle 6 on the slay 2, the fluid of wefting insertion main burner 1 is supplied with by the control of electromagnetic valve 1A switch, and switch and the loom movement of electromagnetic valve 1A are synchronous.

Under gyroaxis 7 inactive states, disk 4 can be installed on the axle 7 rotationally with respect to bobbin 5, the weft yarn Y that the weft yarn bobbin of not expressing from figure imports in the axle 7 is introduced to again in the bobbin 5, around to disk 4, draw weft yarn Y from disk 4, by weft brake 10 and disk 4 contacting and breaking away from and control around the yarn face, brake 10 is propping up admittedly at the head end of cam follower connecting rod 9, cam follower connecting rod 9 can unsteadily be contained on the axle 8, shaking according to the revolution of the cam on the driving shaft 11 12 and the effect of compression spring 13 of cam follower connecting rod 9 carried out, driving shaft 11 and loom movement turn round synchronously, the revolution of driving shaft 11 is by synchronous pulley 14, synchronous belt 15 and and gyroaxis 7 install synchronous pulley 16 into one and drive axle 7 and rotate, coaxial 7 is the circumference revolution of the bobbin 5 of one around disk 4, and weft yarn Y supplies with disk 4 by bobbin 5.

Below near cam follower connecting rod 9, dispose cylinder 17, its drive rod 17a is facing to cam follower connecting rod 9, during to upper process, the head end of bar 17a contacts and pushes with connecting rod 9 at drive rod 17a, makes weft brake 10 and aforementionedly keeps in touch state around the yarn face, promptly, constitute wefting insertion holdout device 18 by Weft yarn clock measuring 3 and cylinder 17, the action of cylinder 17 is controlled by the switch of electromagnetic valve 19, and electromagnetic valve 19 is in normally off.

During from the normal wefting insertion of weft yarn Y that the wefting insertion main burner penetrates, the main burner that arrives fabric W is to the rear flank, and weft yarn is beaten up by stretch nozzle, inweaves fabric W, is cut off by near the scissors apparatus that is in the main burner then, continues wefting insertion later on and weaves cotton cloth.

Weft yarn does not arrive the occasion that the useless latitude of main burner offside takes place, and detects the signal of useless latitude by being located at distolateral weft detector or sensor F, based on the signal that sensor F sends, the loom motor is quit work.

After aforementioned useless latitude signal sent, loom stopped behind the inertia turning in about 1 week, that is, when useless latitude took place, slay 2 was that the rearmost position is to fabric W direction from solid line position shown in Figure 1

When advancing, useless latitude detection signal sends, and useless weft yarn is squeezed into fabric W by reed, and slay 2 reverses again, stop at the stop position shown in Fig. 1 dotted line before.As shown in Figure 3, the filling cutter device is made up of fixed blade 23 of installing on the fixed axis 21 and movable sword 22, by synchronous rotating cam 24 transmissions of turning round with loom, the cam follower connecting rod 25 of swing is connected with movable sword 22 by connecting rod 26 and carries out work, and every wefting insertion once all cuts off weft yarn one time.Near cam follower connecting rod 25, be provided with electromagnetic valve 27, when its drive rod 28a contacted with cam follower connecting rod 25, filling cutter device 20 was in the relieving state, electromagnetic valve 27 has stoped filling cutter device 20 to cut off weft yarn according to aforementioned useless weft yarn detecting signal action.Chew at the wefting insertion main jet near 1 the rearmost position, dispose Weft yarn drawout device 28, the weft yarn Y1 that meets useless weft yarn Y ' in aforementioned loom inertia action is cut off and has attracted at wefting insertion main burner place.Illustrate with regard to Weft yarn drawout device 28 below, but the driving shaft 29a head end at the motor 29 of rotating is provided with decoupler 30, its double action between weft yarn open position and retreating position, dotted line represents 30 at the weft yarn open position among Fig. 3, solid line represents that 30 are in retreating position.The bottom of decoupler 30 is installing cut-out sword 31.

Be located at the next door of decoupler according to the suction pipe 33 of the detection signal action of useless weft yarn, suction pipe 33 is attached to suction device 32, be provided with to blocking the cut-out dish 34 of above-mentioned cut-out sword 31 in suction pipe 33 front upper places, leave suction pipe 33 terminal certain distances, also being provided with the 2nd follow-up suction pipe 35,35 also is connected on the suction device 32.Below 33,35 in two suction pipes, be provided with motor 36, fixing driving roller 37 on the driving shaft 36a of motor 36, they are configured between two suction pipes near suction pipe 35 sides.In addition, 33,35 in two suction pipes are provided with the long roller 38 of rotary survey near suction pipe 33 sides, connecting rod 39 is fixed on the axle 38a of roller 38 orthogonally, and simultaneously, the head end of connecting rod is equipped with magnetic 39a, near magnetic 39a rotary track, be provided with electromagnetic sensor G.

The side that two suction pipes are 33,35 is provided with cylinder 40, for the drive rod 40a of cylinder 40.Supporting plate 41 is supported and can be slided relatively by 40a, prop up the flange of drive rod 40a by stage clip 42,, adorning passive roller 43 with freely rotating in the front side of supporting plate 41,43 is corresponding with aforementioned driving roller 37, under the 43 drive rod 40a at cylinder 40 promote and driving roller 37 contact.Opposite side at supporting plate 41 is equipped with fulcrum 44, it can slide on supporting plate 41, and by stage clip 45 top on the drive rod 40a of cylinder 40 bead, the end of fulcrum 44 is being adorned with freely rotating and is being surveyed long roller 46, because the promotion of the drive rod 40a of cylinder 40, survey long roller 46 and contact, carry out work according to the useless latitude detection signal that sensor F sends with long roller 38 corresponding aforementioned motors 36 of aforementioned survey and cylinder 40 with the long roller 38 of survey.

Aforementioned electric magnet valve 1A, stop weft inserting apparatus 18, filling cutter device 20, Weft yarn drawout device 28 and loom CD-ROM drive motor M move according to the instruction of control device C shown in Figure 5, and control device C then sends aforementioned instruction according to the signal that obtains from sensor F, weaving machine turning angle detecting device S and electromagnetic sensor G.Control device C is made of inlet and outlet connectors, central processing unit and memory.Memory is used for remembering the useless weft yarn handling procedure of Fig. 6 flow chart.

In the present embodiment, the weft yarn when useless latitude takes place is handled, and the weft yarn handling procedure of representing according to the flow chart of the 6th figure carries out, and the effect that weft yarn was handled under next a situation arises with regard to useless latitude makes the following instructions.

When in a single day useless latitude took place, useless weft yarn was inweaved the fell of fabric, and sensor F sends useless latitude detecting signal simultaneously, and according to this signal, control device sends halt instruction to the loom CD-ROM drive motor.Meanwhile, control device C also sends action command to the electromagnetic valve 27 of filling cutter device 20 and the cylinder 17 of prevention weft inserting apparatus 18.Because electromagnetic valve 27 actions, the cut-out function of filling cutter device 20 is disengaged, useless weft yarn Y ' is not cut off, continue to be held in wefting insertion main burner 1 side, in addition, because the action of cylinder 17, weft brake 10 and disk 4 keep intersection around the yarn face, stoped because loom inertia moves the follow-up weft yarn Y1 of useless weft yarn Y ' that causes and penetrates from Weft insertion nozzle.After useless latitude detecting signal sends.Because inertia, loom will continue to turn round about about 1 week, just shut down when slay 2 arrives dotted line position shown in Figure 1.After loom stopped, control device C sent the reversing instruction to the loom CD-ROM drive motor, and loom slay in the end position is stopped, and forms the maximum open state of warp thread.

After the loom reversing, control device C sends motor 29 just changes instruction, simultaneously, remove the action of cylinder 17, and make the limiting time of suction device 32 actions and relieving electromagnetic valve 1A, simultaneously, the weft yarn Y1 on the disk 4 penetrates from the wefting insertion main burner facing to the swing decoupler 30 of the dotted line position of Fig. 3.Y1 is owing to being disconnected device 30 preventions and attracteding in the suction pipe 33, after the fluid jet of wefting insertion main burner stops, because the reverse of motor 29, decoupler 30 is returned to the solid line position of Fig. 3, answer along with 30, disconnect sword 31 and hit on disconnection dish 34, so weft yarn Y1 is cut off separation from the wefting insertion main burner.

The head end of the weft yarn Y1 that has been attracted by suction pipe 33 is continued to draw toward suction pipe 35 sides.Then, cylinder 40 is started working, and as shown in Figure 4, drives the passive roller 43 of roller 37, and surveys long roller 38 and survey to contact between the long roller 46 and compress, and gripping is weft yarn Y1 firmly.Roller to 37,43 and survey long roller and hold weft yarn Y1 38,46 after, motor 36 is started working weft yarn Y ' beginning is drawn because roller to 37,43 drawing effect, gives up.Along with moving of weft yarn Y1, the long roller of the survey of clipped weft yarn is followed revolution to 38,46.Owing to survey the revolution of long roller 38, magnetic 39a is a center steering with the axle of roller 38 also.Magnetic 39 and electromagnetic sensor G are each near being defeated by pulse signal of control device C, and these signals are counted in control device.In when, useless weft yarn not taking place being broken accident, under the situation that useless weft yarn all is drawn out in the Warp opening, when the end of useless weft yarn by survey long roller to 38,46 after, survey long roller and stop to turn round 38,46.Survey the revolution amount of long roller 38, the accumulative total И that is aforementioned pulse signal is grasped by control device C, the length of useless weft yarn is until the end of useless weft yarn from surveying long roller 38,46 contact positions, the pulse number И of corresponding useless weft length, the default scope that comprises И is (n in control device ₁, n ₂) (n ₁＜И＜n ₂) control device judges that according to the result of this affirmation useless weft yarn draws successfully.The loom automatic reverse winding is after restart only position on this basis, and loom starts once more.

When in the useless weft yarn of drawing way, breaking situation, the head that useless weft yarn is broken is surveyed long roller 38,46 and is just stopped to turn round by surveying long roller to after 38,46, surveys the revolution amount of long roller 38, be that pulse number И is grasped by control device C, this accumulative total И is at aforementioned range (n ₁, n ₂In addition, control device C judges useless weft yarn drawing failure according to this result, and then, according to the instruction of control device, unusual warning lamp 47 flashes of light of expression shown in Figure 5 give a warning, later useless weft yarn is handled, the loom reversing and once more starting all will rely on manual.

Draw the occasion of handling failure at this useless weft yarn, in order to eliminate owing to remaining in the float that the useless weft yarn in the Warp opening causes.Will avoid the incident that loom starts once more under the residual situation that useless weft yarn arranged in Warp opening to take place.Thereby prevented that the fabric quality that causes owing to inweaving of useless weft yarn from descending, and increased substantially the reliability that useless weft yarn is handled.The reason major part that causes useless weft yarn is because the weft yarn head end is crooked or form ring-type, and the length of the useless weft yarn that penetrates in Warp opening from wefting insertion main burner 1 is in most of occasion with normally wefting insertion weft length once is identical.Therefore, for most useless latitude phenomenon, the result that useless weft yarn drawing is handled has reflected real result, and the useless weft yarn in the reality is drawn and handled failure and draw at useless weft yarn on the result of processing and also truly reflected.

With regard to present embodiment, because drawing produces opposing tension force, thereby make useless weft yarn produce the occasion of sliding in to 37,43 drawing roller, this sliding phenomenon does not influence the long effect of 38,46 survey for surveying long roller, and useless weft yarn can be by correct measurement.Example except that present embodiment is surveyed rectangular method like this, the embodiment of the 10th figure to the 14 figure is such as described later, for drawing roller, from drawing beginning to the end, mensuration is drawn the revolution amount of roller self or is measured the methods such as time of drawing, compare with these assay methods, present embodiment is not subjected to the influence that roller slides.In addition, utilize when drawing roller self revolution quantitative determination, need to install two sensors.One is whether to give up weft yarn by drawing roller in order to confirm, another draws roller revolution amount for mensuration.Present embodiment has the advantage that does not need two sensors.

The present invention is not limited only to previous embodiment.For example Fig. 7, embodiment shown in Figure 8 also are feasible.

Among the embodiment of the 7th figure, at the long roller of survey a side setting of 38,46 is drawn roller to 48,49, at the long roller of survey 38,46 side setting is in addition drawn roller to 50,51, draw roller moves to 50,51 than drawing roller to 48,49 in advance, eliminated and caused that for a certain reason weft tension changes, thus make survey long roller to 38,46 and useless weft yarn when taking place to slide to surveying the long influence that acts on.The rectangular method of such survey more takes a step forward than previous embodiment.

In the embodiment of the 8th figure, 52,53 of a pair of rollers put belt 54, and weft yarn at belt 54 and 55 clampings of the long roller of survey, to the contact grasping force increase of weft yarn, have prevented to survey the sliding phenomenon in the length effectively.

In addition, also be possible according to the embodiment shown in the 9th figure of the present invention.In this embodiment, the calvus 57 of the weft processing equipment 56 that is provided with above the fell fell that nuzzles up outside Warp opening enters in the Warp opening, hold useless weft yarn, outside Warp opening, move, draw the part of useless weft yarn, and this part of drawing is sent to draws roller 58,59, survey long roller under the state that roller 58,59 grips and also compress gripping to 60,61 to have lived useless weft yarn (identical with other embodiment drawing, wherein a side is by spring loaded), measure the revolution amount of surveying long roller then.Finish identical weft yarn handling procedure with aforementioned each embodiment.

Next, from Figure 10 to Figure 14 another embodiment of the present invention, these figure are with the 1st figure of aforementioned embodiment, and the 3rd figure to the 6 figure are corresponding one by one.For Weft yarn drawout device among the embodiment 28, the difference with aforementioned embodiment is described.Magnetic 39a is equipped with in the upper end that drives roller 37, and the rotary track near magnetic 39a has disposed electromagnetic sensor G, and cancelled the long roller 38,46 of the survey that is provided with in the previous embodiment.On the supporting plate 41 of passive roller 46 offsides.Be provided with light-projecting component 62 and photo detector 63, the outer peripheral face of they and passive roller 43 is almost consistent aspect vertical.Constitute weft detector by light-projecting component, photo detector, detect from suction pipe 33 to suction pipe 35 weft yarn and have or not.The signal that this weft detector sends also is sent to control device C(the 13rd figure).

In the present embodiment, when latitude took place to give up, useless latitude was handled and is carried out according to the program of the flow chart shown in the 14th figure.The same previous embodiments of step before prevention weft inserting apparatus, filling cutter device action.Illustrate with regard to its later step.Outside the wefting insertion main burner, be cut off separation, and attract the head end of weft yarn Y1 and continue to be inhaled toward suction pipe 35 sides by suction pipe 33, then, cylinder 40 actions, shown in the 12nd figure, drive roller 37 and passive roller 43 and clamp weft yarn Y1, draw roller to 37,43 compress grip weft yarn Y1 after, aforementioned weft detector 62,63 actions, detection signal input control device C, next, motor 36 actions make electromagnetic sensor G action simultaneously.Because draw the drawing of roller 37,43, useless weft yarn begins to be drawn.When weft yarn was drawn, magnetic 39a driving shaft 36a was that the center moves in a circle.All send pulse signal during at every turn near electromagnetic sensor G with magnetic 39a.Control device C is the accumulative total pulse number during the signal that weft yarn is arranged that sends from weft detector 62,63.When the weft yarn that do not take place to give up is broken accident, under the situation that useless weft yarn is all gone out by drawing in the Warp opening, the end of useless weft yarn is by weft detector 62,63, by after, weft detector 62, the action of 63 action and electromagnetic sensor G stops, the end of useless weft yarn is by weft detector 62,63 o'clock, from weft detector 62, the weft yarn detection signal that has of 63 input control device C has not had, drive the revolution amount of roller 37, be the accumulative total n of aforementioned pulse signal, grasped by control device C, the length of useless weft yarn is from weft detector 62,63 inputs have the signal of weft yarn to rise, up to the end of useless weft yarn Y ' by detector 62,63 end.The pulse signal И of corresponding useless weft length has remembered the scope (n of the predefined И of comprising at control device ₁, n ₂) (n ₁＜И＜n ₂), aforementioned pulse signal accumulative total И is included in (n ₁, n ₂) in, so control device judges according to the result of this affirmation that useless weft yarn is drawn and handles successfully that on this basis, the loom automatic reverse winding starts once more to restarting behind only position.

When in the useless weft yarn of drawing way, breaking situation, the head that useless weft yarn is broken is through behind the detector 62,63, the weft yarn detection signal that has that detector 62,63 is transported to control device C has interrupted, and drives the revolution amount of roller 37, and promptly pulse signal И is grasped by control device C.This accumulative total И is at aforementioned range (n ₁, n ₂) outside, control device C confirms that according to this result judges useless weft yarn drawing processing failure.Then, according to the instruction of control device, 47 flashes of light of the unusual warning lamp of expression shown in Figure 13 give a warning, and later useless weft yarn drawing is handled, loom reversing and restarting all will rely on manual.Therefore, handle at useless weft yarn drawing under the situation of failure, eliminated effectively owing to residual useless weft yarn in the Warp opening causes the reason of float.

Also have, embodiment about Figure 10-Figure 14, can change into as Figure 15, promptly, in Figure 15, fell enters Warp opening because the revolution of driving shaft 64 is nuzzled up outside Warp opening to be positioned at the calvus 57 of weft processing equipment 56 of fell top, hold useless weft yarn by calvus 57, and by calvus 57 mobile drawing outside Warp opening go out to give up part of weft yarn, this part of useless weft yarn by drawing to the pendulum track of the passive roller 68 of reel cage 65 head ends, passive roller 68 is shaken to the dotted line position of Figure 15 by the promotion of cylinder 66, useless weft yarn just is clamped in rotation roller 67 and waves between the roller 68, then, owing to drive the revolution of roller, useless weft yarn Y ' is gone out by drawing in Warp opening, the revolution amount that detects passive roller 68 by the magnetic 39a and the electromagnetic sensor G of passive roller 68 sides, length and aforementioned each embodiment that light-projecting component 70 in the suction pipe 69, the detector that photo detector 71 constitutes are measured useless weft yarn carry out the weft yarn processing equally.Among this embodiment, when drawing after roller starts working to 67,68, the flow chart of the 14th figure moves and stops according to following order, the action of revolution amount detector, weft detector action, weft detector action stopping, turn round amount detector.

For the shutdown beyond the useless weft yarn, in order to prevent strut rail (float), in the time of removing the weft yarn that inweaves before loom is about to shut down, the present invention also can be suitable for.

Just as described above in detail, according to weft yarn processing method of the present invention, avoided conscientiously in Warp opening, staying unwanted weft yarn, thereby prevented owing to useless weft yarn inweaves the decline that Bu Nei causes fabric quality.

Fig. 1 represents the embodiment that the present invention specializes to Fig. 6.Fig. 1 is that loom is worn near the simple and easy plane of brown reed; Fig. 2 is a wefting insertion holdout device front elevation; Fig. 3 is the side view of Weft yarn drawout device and filling cutter device, and Fig. 4 is the simple and easy plane that the useless weft yarn of expression is drawn state; Fig. 5 is a theory diagram; Fig. 6 represents the flow chart of useless weft yarn handling procedure; Fig. 7, Fig. 8 are the principle planes of expression other example of the present invention; Fig. 9 also is the front section view of one one of other example of expression; Figure 10 to Figure 14 is another embodiment that expression the present invention specializes, and Figure 10 is that loom is worn near the simple and easy plane of brown reed; Figure 11 is the side view of useless Weft yarn drawout device and filling cutter device; Figure 12 is the simple and easy plane that the useless weft yarn of expression is drawn state, and Figure 13 is a theory diagram; Figure 14 is the useless latitude handling procedure block diagram of expression; Figure 15 is to variation instance embodiment illustrated in fig. 14 to Figure 10.

Claims (2)

1; a kind of weft yarn processing method of shuttleless loom; wherein under the state that forms Warp opening; the weft yarn that inweaves fabric before being about to shut down is removed; this weft yarn is by draw roller to pulling out outside opening in Warp opening; it is characterized in that pulling out on the route at above-mentioned weft yarn; be provided with can contact and separable revolution roller right; this the revolution roller between the above-mentioned weft yarn of clamping; detect the revolution amount of the revolution roller of clipped weft yarn; detected revolution amount is in preset range the time; judge that then the weft yarn drawing handles successfully, if the revolution amount not in predetermined scope the time, is then judged the handling failure of weft yarn drawing.

2, a kind of weft yarn processing method of shuttleless loom; wherein under the state that forms Warp opening; the weft yarn that inweaves fabric before being about to shut down is removed; this weft yarn is by draw roller to pulling out outside opening in the warp thread mouth; it is characterized in that detecting by drawing the weft yarn that roller is drawn with weft detector, according to this weft detector send have during the yarn signal in draw roller the revolution amount whether judge in preset range that the drawing weft yarn handles whether success.

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