CN103485043B

CN103485043B - The limit forming apparatus of loom

Info

Publication number: CN103485043B
Application number: CN201310208302.3A
Authority: CN
Inventors: 松山丰
Original assignee: Tsudakoma Industrial Co Ltd
Current assignee: Tsudakoma Corp
Priority date: 2012-06-13
Filing date: 2013-05-30
Publication date: 2016-02-24
Anticipated expiration: 2033-05-30
Also published as: EP2674521B1; JP6071391B2; CN103485043A; CN203295749U; EP2674521A1; JP2014015701A

Abstract

The invention provides a kind of limit forming apparatus of loom.Form by limit yarn (16) the limit forming apparatus (1) being wound around strand limit to comprise: limit yarn path switching device (2), it makes the path of the 1st limit yarn (16a, 16b) conjugate on woven pieces direction; Limit yarn shedding motion (3), it makes the path of the 2nd limit yarn (16c) conjugate in the vertical direction; And guiding parts (27), it is compared limit yarn shedding motion (3) and is configured in warp thread and sends side, the 2nd limit yarn (16c) is limited in position during maximum open.Limit yarn shedding motion (3) possesses: component (9), its be bearing in around the axle intersected with above-below direction rotate upper and conjugate on swing-around trajectory by rotatable parts (10), and coordinate with the 2nd limit yarn (16c) and this path conjugated in the vertical direction; And driving control device (140), its drive unit to rotating drive component (9) (11) controls.When maximum open, the distance the 2nd limit yarn (16c) during from the center of swing-around trajectory to maximum open is shorter than the distance from the center of swing-around trajectory to the position of component (9).

Description

The limit forming apparatus of loom

Technical field

The present invention relates to the limit forming apparatus that a kind of at least 2 limit yarns by drawing from bobbin form the loom on strand limit.

Background technology

As being wound around the device that contained weft yarn also forms strand limit, just like device described in patent document 1 and patent document 2 with the woven end of knitting of weaving cotton cloth of loom by many limit yarns.

The device of patent document 1 forms so-called winding strand limit with 3 limit yarns.3 limit yarns rotate yarns by 2 and 1 fixed yarn is formed, 2 rotate yarns and 1 fixed yarn each time wefting insertion time its path reverse up and down and form opening, and 2 rotate yarns and carry out contained weft yarn at the left and right switch at fixed yarn after a wefting insertion.

In order to realize the action of above-mentioned limit yarn, the device of patent document 1 has the 1st agitating device and the 2nd agitating device, described 1st agitating device makes 1 to be used for shaking in the vertical direction the sleeve-shaped guide pin that fixed yarn leads, described 2nd agitating device makes 2 to be used for shaking in the vertical direction the sleeve-shaped guide pin that rotation yarn leads, and possess rotating mechanism in the centre position of 2 guide pins, make 2 guide pins rotate transposition around the axis being parallel to guide pin.

And, in the device of patent document 1, shake in the vertical direction together with the guide pin of the 2nd agitating device by making the guide pin of the 1st agitating device, form the 1st opening between 2 guide pins making the guide pin of the 1st agitating device enter the 2nd agitating device, after wefting insertion to the 1st opening, the guide pin of the 1st agitating device is made to form the 2nd opening from departing between 2 guide pins of the 2nd agitating device, and then, in the position of the 2nd opening, 2 guide pins of the 2nd agitating device are made to rotate transposition by rotating mechanism, 2 paths rotating yarn are exchanged on woven pieces direction, afterwards, wefting insertion is to the 2nd opening.By repeatedly carrying out above action, the device of patent document 1 is formed and is wound around strand limit.

On the other hand, Patent Document 2 discloses the electronic limit forming apparatus being formed winding strand limit (keep to the side edge) by 2 limit yarns.The device replaced in patent document 1 makes limit yarn conjugate in the vertical direction by the swing movement of parts and forms opening, the device in patent document 2 by make limit yarn displacement parts around pivot center toward the direction rotational motion limit yarn conjugated in the vertical direction and form opening.

Specifically, the structure of the device of patent document 2 is as follows: on the turning cylinder of the electro-motor as drive unit, install pivoted arm, and insert by the limit yarn guided towards fell in the thread guide eyelet being formed at pivoted arm end, this device, by making pivoted arm rotate toward the direction by electro-motor, makes limit yarn conjugate towards above-below direction energetically.

Again, in the device of patent document 2, undertaken for the purpose of wefting insertion by Absorbable organic halogens, by the rotation of speed Control (intermittent driving) electro-motor, limit yarn is made not to be the displacement carried out according to dextrorotation curve when making CD-ROM drive motor at the uniform velocity rotate continuously toward the direction in the displacement of above-below direction, but according to the displacement having the so-called curve stopped to carry out making limit yarn stop specified time limit with the state being positioned at maximum index position (position during maximum open) in the vertical direction, expand during making limit yarn be in maximum open.

Prior art document

Patent document

Patent document 1: Japanese Kohyo 11-505298 publication

Patent document 2: Japanese Unexamined Patent Application Publication 2001-519484 publication

When the device of patent document 1, in order to form the opening be made up of limit yarn, the guide pin of the 1st agitating device is shaken together with the guide pin of the 2nd agitating device at above-below direction.Like this, if make parts back and forth movement, when its direction of motion (shaking direction) is reversed, then due to the impact of inertia, load is applied to drive unit.

On the other hand, when the device of patent document 2, structure is: the rotation due to the electro-motor of drive unit is directly connected to the displacement of limit yarn, so form the speed Control (intermittent driving) that the limit yarn harness motion stopped only relies on electro-motor as mentioned above.Therefore, along with following problem can occur in the high speed development of loom.

Realize because described stop makes the position of electro-motor when limit yarn is maximum open be in halted state, therefore, to make formation stop during elongated, then electro-motor relative to rotate withholding period between also thereupon elongated.In this case, due to increasing relative to ratio shared between the withholding period of rotating of the electro-motor in 1 cycle of loom, therefore, the velocity of rotation of the electro-motor during must making before and after the described retention period is also accelerated thereupon.Its result, the degree tending to the deceleration of stopping and the acceleration from this stopping for forming stop increases, that is, the driving of electro-motor is with acceleration and deceleration sharp.And along with the high speed of loom, the driving of electro-motor, with further acceleration and deceleration sharp, therefore, applies large load on an electric motor due to the inertia of pivoted arm and electro-motor self, electro-motor probably can be caused to produce mechanicalness damaged.

Again, as mentioned above, when needs make electro-motor acceleration and deceleration sharp, the caloric value of the electro-motor caused due to acceleration and deceleration will inevitably be made to increase, therefore, go down like this, the continuous running along with loom I'm afraid that electro-motor and its drive circuit can produce electrical resistance breakage.Again, damaged in order to prevent electro-motor and drive circuit from producing such electrical resistance, consider to arrange cooling device in the drive unit comprising electro-motor.But, such cooling device is set drive unit can be caused to make thereupon maximizing the configuration of limit forming apparatus be restricted, and cause installation cost increase.

In addition, by making the length dimension of pivoted arm increase, the thread guide eyelet that limit yarn is actively conjugated can increase around the radius of gyration of pivot center, need not the speed Control of electro-motor as described in patent document 2, just can make can expand during the limit yarn opening of wefting insertion.But in this case, because the addendum modification of limit yarn towards above-below direction increases, so limit yarn tension when limit yarn has carried out maximum displacement also occurs significantly change and cause excessive, excessive limit yarn tension can cause limit yarn fracture.Again, elongated its inertia around pivot axis that makes of the size along with pivoted arm becomes large, and cause the load applied on the drive means also to increase, therefore, drive unit is easily damaged.

Summary of the invention

So problem of the present invention is to provide a kind of limit forming apparatus, this limit forming apparatus can form Absorbable organic halogens and carries out the limit yarn opening of wefting insertion and can not cause the breakage of drive unit etc.

The present invention is premised on following limit forming apparatus, described limit forming apparatus in the limit yarn opening formed by the 1st limit yarn and the 2nd limit yarn inserting weft and weave cotton cloth knit end is formed be wound around twist limit, described limit forming apparatus comprises: limit yarn shedding motion and limit yarn path switching device, described limit yarn shedding motion is compared fell and is configured in warp thread and sends side, the path of the 2nd limit yarn is conjugated at above-below direction, described limit yarn path switching device periodically switches relative to the 2nd limit yarn in the path of chien shih the 1st limit yarn of fell and limit yarn shedding motion between the longitude yarn row side and these 2 positions, anti-longitude yarn row side at least woven pieces direction.

And, limit of the present invention forming apparatus is under above-mentioned problem, it is characterized in that, described limit forming apparatus comprises guiding parts, this guiding parts is compared described limit yarn shedding motion and is fixedly arranged on warp thread and sends side and lead to the 2nd limit yarn, and, position when between described guiding parts and fell, the path of the 2nd limit yarn to be limited in described limit yarn opening be maximum open, described limit yarn shedding motion possesses: by rotatable parts, component, drive unit and driving control device, describedly be fixedly arranged on the framework of loom by rotatable parts, can rotate around the axis at least intersected with above-below direction, described component is bearing in described by rotatable parts, and, along with described by the rotation of rotatable parts by the described swing-around trajectory specified by the periphery of rotatable parts conjugates, and coordinate with the 2nd limit yarn and the path of the 2nd limit yarn is at least conjugated at above-below direction, described drive unit makes described by rotatable parts rotating drive toward the direction, the rotating drive of described driving control device to drive unit controls, describedly to be set to by the position of rotatable parts relative to the above-below direction of the 2nd limit yarn: on the above-below direction of the center of the described swing-around trajectory of warp thread direction, distance the 2nd limit yarn during from the center of described swing-around trajectory to described maximum open is than short from the distance of center to the described component position conjugated at described swing-around trajectory of described swing-around trajectory.

Wherein, here so-called " fixed configurations " be finger be configured to fix.

It is again, so-called here that " " center " of swing-around trajectory refers to the position of the centre (central authorities) becoming swing-around trajectory on warp thread direction and above-below direction.

For " by rotatable parts ", " can rotate around the axis at least intersected with above-below direction " comprises following situation: extended on all directions except vertical by the axis direction of rotatable parts.Namely, as long as by the direction that the axis direction of rotatable parts is beyond vertical, by described component just being made to conjugate in the vertical direction by rotatable parts described in rotating drive, relative to the path of the 1st limit yarn, component can make the path of the 2nd limit yarn conjugate in the vertical direction, therefore, all directions of such axis are comprised.

In addition, in the forming apparatus of limit of the present invention, drive unit described in the mode variable speed drives that described driving control device is elongated during also can separating to make described component and the 2nd limit yarn.

In the forming apparatus of limit of the present invention, limit yarn shedding motion is wound around the 1st of strand limit for making formation, the 2nd limit yarn in 2nd limit yarn conjugates towards above-below direction, described limit yarn shedding motion is following structure: the component coordinated with the 2nd limit yarn is conjugated on described swing-around trajectory by making to be rotated toward the direction by rotatable parts and conjugates at above-below direction, therefore, compare in the limit forming apparatus described in above-mentioned patent document 1 for making the 1st, two devices swing movement together that 2nd limit yarn conjugates towards above-below direction, at least make the device not cracky that the 2nd limit yarn conjugates towards above-below direction, the breakage reducing limit forming apparatus entirety can be realized.

On this basis, in the forming apparatus of limit of the present invention, position when maintaining maximum open to make limit yarn, namely, (retention period) expansion during stopping to make formation, make the guiding parts led to the 2nd limit yarn compare limit yarn shedding motion to be fixedly arranged on warp thread and to send side, by position when to be limited in limit yarn opening with the path of the 2nd limit yarn of guiding parts and fell restriction be maximum open, and making the structure of limit yarn shedding motion be: the front and back of position during described maximum open on described swing-around trajectory make component separate with the 2nd limit yarn, therefore, the structure forming the above-mentioned patent document 2 stopped from only relying on the speed Control of drive unit is different, stop can be formed by mechanicalness structure.And, during the retention period relies on component and the 2nd limit yarn to separate, so can make to shorten between the withholding period of the drive unit for realizing the retention period identical with the structure of described patent document 2, and, can set in the retention period between deceleration period and/or between accelerated period, carry out so the acceleration and deceleration of drive unit can be made to relax.Therefore, according to limit of the present invention forming apparatus, without the need to just can realize the retention period of hope with acceleration and deceleration sharply, and the breakage caused due to the load of drive unit and heating can be reduced.

Drive unit with mode variable speed drives drive unit elongated during making component and the 2nd limit yarn separate, can make further thus can wefting insertion limit yarn opening during expand.And, can in the retention period that at least component and the 2nd limit yarn separate, drive unit be slowed down lentamente and make the retention period elongated, therefore, comparing and only rely on the intermittent driving of drive unit to be formed to stop described in patent document 2, significantly can reducing that be applied to can load on the drive unit during the limit yarn opening of wefting insertion for expanding.Again, compare the device not carrying out variable speed drives, by less above-mentioned swing-around trajectory, can obtain can during the limit yarn opening of wefting insertion, therefore, it is possible to make limit yarn shedding motion miniaturized.

Accompanying drawing explanation

Fig. 1 is the close-up top view of the loom being provided with limit of the present invention forming apparatus 1;

Fig. 2 is the side view representing limit of the present invention forming apparatus 1, which show the state that limit yarn 16 is in opening;

Fig. 3 is the side view representing limit of the present invention forming apparatus 1, which show limit yarn 16 and is in the state of remaining silent;

Fig. 4 is the side cross-sectional, view representing limit yarn path switching device 2;

Fig. 5 is the top cross-sectional view cut off at the A-A of Fig. 4;

Fig. 6 is the top view representing limit forming apparatus 1;

Fig. 7 is the top view of the action representing limit yarn path switching device 2, Fig. 7 (a) represent relative to the 2nd limit yarn 16c, the 1st limit yarn 16a in anti-longitude yarn row side, the state of the 1st limit yarn 16b in longitude yarn row side; Fig. 7 (b) represent relative to the 2nd limit yarn 16c, the 1st limit yarn 16a in longitude yarn row side, the state of the 1st limit yarn 16b in anti-longitude yarn row side;

Fig. 8 is the block diagram representing driving control device 140;

Fig. 9 is the key diagram of the pattern representing DD motor 58;

Figure 10 be represent component 9 swing-around trajectory and beat up, the key diagram of relation between opportunity of wefting insertion etc.;

Figure 11 represents that limit of the present invention forming apparatus 1 carries out the top view of the example being wound around strand limit;

Figure 12 is the side view of the limit forming apparatus 1 representing other embodiments of the present invention;

Figure 13 is the three-view drawing of the limit yarn path switching device 2 of the limit forming apparatus 1 representing other embodiments of the present invention, and Figure 13 (a) is top view; Figure 13 (b) is side view; Figure 13 (c) is front view;

Figure 14 is the three-view drawing of the limit yarn path switching device 2 of the limit forming apparatus 1 representing other embodiments of the present invention, and Figure 14 (a) is top view; Figure 14 (b) is side view; Figure 14 (c) is front view;

Figure 15 is two figure of the limit yarn path switching device 2 of the limit forming apparatus 1 representing other embodiments of the present invention, and Figure 15 (a) is front view; Figure 15 (b) is side view;

Figure 16 is two figure of the limit yarn path switching device 2 of the limit forming apparatus 1 representing other embodiments of the present invention, and Figure 16 (a) is front view; Figure 16 (b) is side view;

Figure 17 is the side view of the limit forming apparatus 1 representing other embodiments of the present invention;

Figure 18 is the side view of the limit forming apparatus 1 representing other embodiments of the present invention;

Figure 19 is the side view of the limit forming apparatus 1 representing other embodiments of the present invention;

Figure 20 is the partial side view of the limit forming apparatus 1 representing other embodiments of the present invention;

Figure 21 is the top view of the limit forming apparatus 1 representing other embodiments of the present invention;

Figure 22 is the key diagram of the pattern representing DD motor 58;

Figure 23 be the swing-around trajectory of the component 9 representing variation and beat up, the key diagram of relation between opportunity of wefting insertion etc.;

Figure 24 be the swing-around trajectory of the component 9 representing variation and beat up, the key diagram of relation between opportunity of wefting insertion etc.;

Figure 25 be the swing-around trajectory of the component 9 representing variation and beat up, the key diagram of relation between opportunity of wefting insertion etc.

Symbol description

The limit forming apparatus of 1-loom, 2-limit yarn path switching device, 3-limit yarn shedding motion, 4-eyelet, 5-limit yarn guiding parts, 6-support unit, 7-conjugates parts, 8-drive unit, 9-component, 10-is by rotatable parts, 11-drive unit, 12-main part, 13-fitting pin, 14-balancer, 15-limiting part, 16-limit yarn, 16a-the 1st limit yarn, 16b-the 1st limit yarn, 16c-the 2nd limit yarn, 17-weft yarn, the weft yarn of 17a-wefting insertion, the weft yarn of 17b-wefting insertion, 18-warp thread, what 19-weaved cotton cloth knits end, 20-framework (for yarn side), 21-beam part, 22-bobbin, 22a-the 1st limit yarn bobbin, 22b-the 1st limit yarn bobbin, 22c-the 2nd limit yarn bobbin, 23-creel, 24-fell, 25-upholds device, 26-menopause tablet device, 27-guiding parts, 28-heald frame group, 28a-heald frame, 28b-heald, 28c-side frame, 29-reed, 29a-weft guide groove, 29b-reed frame, 30-support, 31-pillar, 31a-fixing hole, 32-scaffold, 33-guard block, 34-bolt, 35-main body block, 36-bolster, 37-base component, 38a-limit yarn guide rod, 38b-limit yarn guide rod, 39-opening portion, 40-plane, 41-bearing reception hole, 42-bearing, 43a-through hole, 43b-through hole, 43c-through hole, 44-the 1st limit yarn guiding, 44a-the 1st limit yarn guiding, 44b-the 1st limit yarn guiding, 45-shakes block, 45a-side, 45b-inclined plane, 45c-through hole, 46-permanent magnet, 47-permanent magnet, 48-electromagnet, 49-electromagnet housing, 50-stop component, the 51-axis of symmetry, 52-installing hole, 53-installing hole, 54-upstream side, 55-flange, 56-through hole, 58-DD motor, 59a-stator, 59b-rotor, 60-pivot center, 61-rolling disc, 62-jaw portion, 63-support column, 64-balancer pillar, 65-balancer pin, 66-guide groove, 66a-guide groove, 66b-guide groove, 66c-guide groove, 67-the 1st limit yarn guiding, 67a-the 1st limit yarn guiding, 67b-the 1st limit yarn guiding, 68-protects pillar, 69-covers, 70-groove, 71-channel parts, 72-glide base, 73-actuator, 74-the 1st limit yarn guiding, 75-the 1st limit yarn guiding, 76-servo motor, 77-bolster, 78-disk-shaped base parts, 79-the 1st limit yarn guiding, 80-bearing, 81-main body block, 82-bolster, 83-main body bracket, 84-through hole, 85-cantilevered bar, 86-elongated hole, 87-turning cylinder, 88-crank disk, 89-shakes pin, 90-servo motor, 91-pinion, 92-the 1st limit yarn guiding, 93-cantilevered bar, 94-servo motor, 94a-output shaft, 95-main body block, 96-driver plate, 97-warp thread leads, 98-servo motor, 99-pillar, 100-driving shaft, 101-driving pulley, 102-driven pulley, 103-tape member, 126-fitting pin, 127-the 1st weaves cotton cloth, 128-the 2nd weaves cotton cloth, 129-base component, 130a-limit yarn guide rod, 130b-limit yarn guide rod, 131a-limit yarn guide rod, 131b-limit yarn guide rod, 132-bolster, 133a-the 1st limit yarn guiding, 133b-the 1st limit yarn guiding, 134a-the 1st limit yarn guiding, 134b-the 1st limit yarn guiding, 135-limiting part, 136-limiting part, 140-driving control device, 141-position command generating unit, 142-memory, 143-position control circuit, 143a-comparing section, 143b-position deviation enlarging section, 144-setting apparatus, 145-speed control circuit, 145a-comparing section, 145b-velocity deviation enlarging section, the control device of 146-loom, 147-current control circuit, 147a-torque control division, 147b-D/A converter, 147c-Current amplifier portion, 147d-current detecting part, 149-differentiator, 150-axis of rocking, 151-main body block, 152-drive unit, WL-warp, PL-the 1st position P1, P2-the 2nd position P2.

Detailed description of the invention

Below, based on Fig. 1-Figure 10, an embodiment of limit of the present invention forming apparatus is described.In the following description, the direction parallel with the direct of travel of warp thread 18 is set to " warp thread direction ", in the warp direction, the warp thread of not shown supply warp thread 18 is sent side and is set to " upstream side ", fell side is set in " downstream ".Again, be set in " woven pieces direction " by the heading of weft yarn 17, the woven pieces direction from downstream viewed from upstream side during loom is also referred to as " left and right directions ".

Fig. 1 is the close-up top view of the loom of the limit forming apparatus 1 being provided with loom of the present invention.In addition, limit forming apparatus 1 is separately positioned on for yarn side and the anti-position of knitting near end 19 for yarn side on woven pieces direction, supply yarn side and instead supply each limit forming apparatus 1 of yarn side the configuration except forming each parts of limit forming apparatus 1, shape about except the symmetry of woven pieces direction, structure is all identical, so only represent for the limit forming apparatus 1 of yarn side and the structure of neighbouring loom thereof in FIG, only the limit forming apparatus 1 for yarn side is described below.

At the upstream side of limit forming apparatus 1, the bobbin 22 that directed edge forming apparatus 1 supplies limit yarn 16 is set.In addition, the limit forming apparatus 1 of present embodiment amounts to 3 limit yarns 16 by 2 the 1st limits yarn 16a, 16b and 1 the 2nd limit yarn 16c and forms 3 winding strand limits, therefore, as bobbin 22, be provided with 2 the 1st limit yarn bobbin 22a, 22b and 1 the 2nd limit yarn bobbin 22c.These 3 bobbins 22 are respectively by creel 23 rotatably support, and described creel 23 is fixedly arranged on loom frame 20.

In addition, in the present embodiment, bobbin 22 is arranged on the upstream side of limit forming apparatus 1 in the warp direction, but by fetching the limit yarn 16 of drawing from bobbin 22, also bobbin 22 can be configured in the downstream of limit forming apparatus 1, the downstream of fell 24 can also be configured in if possible.

Each limit yarn 16 of drawing from bobbin 22 is directed to limit of the present invention forming apparatus 1 through the extension device 25 for adjusting each limit yarn 16 tension force, afterwards, arrives fell 24 from passing through between the reed wire of reed 29.

Limit forming apparatus 1 is bearing on the framework (for yarn side) 20 of loom at the upstream side of heald frame group 28 via support 30, described support 30 erects on beam part 21, and described beam part 21 is erected between the framework 20 for yarn side of loom and the not shown anti-framework for yarn side.In each heald frame 28a of heald frame group 28 by knitting the space be provided with between the heald 28b of side and the side frame 28c of heald frame 28a for configuring limit forming apparatus 1, limit forming apparatus 1 is configured in this space with a part from the form that upstream side enters, further, woven pieces direction is configured in by knitting between the heald 28b of side and the side frame 28c of heald frame 28a.

Then, the unitary construction of limit forming apparatus 1 is described with reference to Fig. 2.Limit forming apparatus 1 possesses limit yarn path switching device 2, limit yarn shedding motion 3, guiding parts 27 and limiting part 15, described limit yarn path switching device 2 makes the 1st limit yarn 16a, the path of 16b switches between the longitude yarn row side and these two positions, anti-longitude yarn row side in woven pieces direction relative to the 2nd limit yarn 16c, described limit yarn shedding motion 3 makes the path of the 2nd limit yarn 16c relative to the 1st limit yarn 16a, 16b conjugates between these two positions, the upper side and lower side of above-below direction, described guiding parts 27 limits the path of the 2nd limit yarn 16c in the vertical direction, described limiting part 15 limits the path of the 2nd limit yarn 16c on woven pieces direction.

In fig. 2, limit forming apparatus 1 possesses the scaffold 32 be fixed on support 30, and limit yarn path switching device 2 and limit yarn shedding motion 3 are arranged on scaffold 32.Limit yarn path switching device 2 is configured in the upstream side of reed 29 in the warp direction.Again, limit yarn shedding motion 3 is configured in the upstream side of limit yarn path switching device 2 in the warp direction, and is configured in the downstream of guiding parts 27.

In addition; in the example in the figures; limit forming apparatus 1 possesses the guard block 33 of tabular in the heald side of scaffold 32, in case stop bit is in contacting with limit yarn path switching device 2 and limit yarn shedding motion 3 by the heald 28b (not shown) knitting side.Guard block 33 is arranged on scaffold 32 via not shown pillar and bolt 34, and guard block 33 extends to the domain of the existence of whole limit yarn path switching device 2 and limit yarn shedding motion 3 in the warp direction.

Be described in detail with reference to Fig. 2-5 opposite side yarn path switching device 2.Limit yarn path switching device 2 is the devices (with reference to Fig. 7) making the path of 2 the 1st limits yarn 16a, 16b switch across about the path of the 2nd limit yarn 16c on woven pieces direction.As Fig. 4, shown in 5, the primary structure of limit yarn path switching device 2 possesses: main body block 35, bolster 36, base component 37, limit yarn guide rod 38a, 38b and drive unit 8, described main body block 35 is fixed on framework 20 through scaffold 32 as shown in Figure 2, described bolster 36 is rotatably supported in main body block 35 as support unit 6, described base component 37 is bearing on bolster 36 as displacement parts 7, described limit yarn guide rod 38a, 38b erects on base component 37 as two limit yarn guiding partss 5, described drive unit 8 makes base component 37 drive around the axle center shake of bolster 36 via bolster 36.

Main body block 35 is the block-type parts being roughly cuboid, and its 3 sides are formed the opening portion 39 of opening, and main body block 35 has the cross sectional shape of anti-コ font from the side.This main body block 35 be with in side do not have the plane 40 of opening portion 39 parallel with woven pieces direction and the mode that plane 40 is positioned at most downstream side is in the warp direction fixed on the side of the longitude yarn row side in the woven pieces direction of the scaffold 32 shown in Fig. 2.

Again, main body block 35 has across opening portion 39 at the through bearing reception hole 41 of above-below direction.In this bearing reception hole 41, in the vertical direction across separated position, opening portion 39, respectively to make pivot center be embedded with bearing 42 towards the state of above-below direction.And main body block 35 supports via bearing 42 pairs of bolsters 36 in bearing reception hole 41.Therefore, bolster 36 is fixedly arranged on the framework 20 of loom via bearing 42, main body block 35.

State that bolster 36 extends in the vertical direction with its axle center (axle center is towards the state in the direction intersected with woven pieces direction) is by main body block 35 rotatably support.Again, between pair of bearings 42, a part for bolster 36 is exposed on the external from opening portion 39.And then bolster 36 has the length dimension larger than the height dimension (size of the axis direction of bearing reception hole 41) of main body block 35, and to assemble from the state that upper surface is outstanding relative to main body block 35.And, the part outstanding from main body block 35 of bolster 36 is equipped with base component 37 in not relatively turnable mode.Therefore, base component 37 support shaft 36 supports, and can conjugate via bearing 42 relative to the framework 20 of loom.

Base component 37 is flat block-type parts.On base component 37, be equipped with through hole 43a, 43b and through hole 43c with the form through at plate thickness direction, be inserted with 2 limits yarn guide rod 38a, 38b in described through hole 43a, 43b, in described through hole 43c, be inserted with bolster 36.In addition, as shown in Figure 5, through hole 43a, 43b wear in equidistant mode that is respective and through hole 43c.Base component 37 with through hole 43a, 43b on woven pieces direction than through hole 43c by the state of longitude yarn row side, chimericly with bolster 36 in through hole 43c to assemble.As shown in Figure 4, limit yarn guide rod 38a, 38b are the bar-like members being equipped with eyelet 4 near upper end, and described eyelet 4 is for inserting the 1st limit yarn 16a, 16b.Yarn guide rod 38a, 38b are inserted through in through hole 43a, 43b of base component 37 with its lower end for each limit, and erect on base component 37 with the state of the axis parallel of bolster 36.In the present embodiment, in the eyelet 4 of limit yarn guide rod 38a, insert the 1st limit yarn 16a, in the eyelet 4 of limit yarn guide rod 38b, insert the 1st limit yarn 16b.

The length dimension (size of bearing of trend) of 2 limits yarn guide rod 38a, 38b is different, and in the example in the figures, limit yarn guide rod 38b is shorter than limit yarn guide rod 38a.Specifically, the length dimension of limit yarn guide rod 38a, 38b sets as follows: under 2 limits yarn guide rod 38a, 38b are in the state be assemblied on base component 37, in the vertical direction, the front position of limit yarn guide rod 38b is made to be positioned at the below of the lower end position of the eyelet 4 of fillet yarn guide rod 38a and the straight line of fell 24.Therefore, as shown in Figure 2, at fell 24 with between limit yarn guide rod 38a, 38b, in the vertical direction, the 1st limit yarn 16a does not intersect with the path of the 1st limit yarn 16b, the position of the 1st limit yarn 16a all the time above the 1st limit yarn 16b.

In addition, in the diagram, base component 37 is provided with the 1st limit yarn guiding 44a, 44b, described 1st limit yarn guiding 44a, 44b is positioned at below the path of the 2nd limit yarn 16c for the path of the 1st limit yarn 16a, the 16b making limit yarn path switching device 2 upstream side.Arranging the 1st limit yarn guiding 44a, 44b is in order to avoid the 1st limit yarn 16a, 16b during opening and the 2nd limit yarn 16c interferes, and will describe this below.

As shown in Figure 4 and Figure 5, drive unit 8 by shake block 45, two permanent magnets 46,47, electromagnet 48, electromagnet housing 49 and stop component 50 form.Shake block 45 is block parts as shown in Figure 5, shape when overlooking is the pentagon of line symmetry, and, shake block 45 is formed as upper surface and lower surface block parts parallel to each other, it has 3 side 45a and 2 the inclined plane 45b tilted, the adjacent side of described 3 side 45a is mutually orthogonal, described 2 inclined plane 45b are connected with a side, extend in parallel 2 in 3 side 45a (side of width), and, shake block 45 has the shape relative to the axis of symmetry 51 line symmetry, the described axis of symmetry 51 from the border of 2 inclined plane 45b by and parallel with the side of above-mentioned width.

Being centrally located on the axis of symmetry 51 and there is bolster 36 through hole 45c through in a thickness direction of shake block 45.In through hole 45c, be inserted with the part exposed from the opening portion 39 of main body block 35 of bolster 36, and shake block 45 is fixed on bolster 36 un-rotatably.Therefore, drive unit 8 makes shake block 45 be connected with base component 37 by bolster 36.2 inclined plane 45b of shake block 45 have worn permanent magnet 46,47 installing hole 52,53 respectively.

In the installing hole 52,53 of shake block 45, insert permanent magnet 46,47 respectively, and fixed by bonding grade.Permanent magnet 46,47 same shape each other, all has drum, and, be arranged in the installing hole 52,53 of shake block 45 to make the state of mutual polarity inversion.

Electromagnet 48 is accommodated in electromagnet housing 49, and electromagnet housing 49 is fixed on the upstream side side (with the side being formed with opening in 2 sides of width orthogonal direction) 54 of main body block 35.Electromagnet housing 49 is the parts being roughly rectangular shape, and as shown in Figure 4, one end of its length direction has installation flange 55.Electromagnet housing 49 is to make length direction towards the state in the direction parallel with warp thread direction, and at flange 55, place is fixed in main body block 35.Therefore, drive unit 8 is fixedly arranged on the framework 20 of loom via main body block 35.

Again, electromagnet housing 49 is equipped with through hole 56, in described through hole 56, is accommodated with electromagnet 48 with the state through at length direction, and it is inner that electromagnet 48 is fixedly arranged on through hole 56.The polarity of the excited state of electromagnet 48 is reversed by switching the sense of current that is flowing in the coil of electromagnet 48.And along with the polarity of electromagnet 48 is inverted, the permanent magnet 46,47 of set opposed polarity is alternately attracted to electromagnet 48 side, shake block 45 is meanwhile made to shake around the axle center of bolster 36.

On the other hand, the bottom surface of the inboard (downstream) of the opening portion 39 of main body block 35 is fixed with the stop component 50 of tabular.The thickness of slab size of stop component 50 is determined in the mode being formed with gap between stop component 50 and shake block 45, to allow that shake block 45 shakes, and, the thickness of slab size of stop component 50 is determined in the mode abutted with shake block 45 when shake block 45 has shaken the shaking quantity of regulation.

According to this stop component 50, the swing movement that carries out along with the excitation of electromagnet 48 of shake block 45 to be abutted with stop component 50 by the side 45a that shakes the downstream of block 45 and limits.Therefore, between the shake position (shake and limit) that the part of the shake position (shake and limit) that the part of anti-longitude yarn row side of swing range in the side 45a of shake block 45 of shaking block 45 abuts with stop component 50 and longitude yarn row side abuts with stop component 50.In addition, this respectively shakes position is decided by the width dimensions of described gap and shake block.

In the limit yarn path switching device 2 possessing above structure, base component 37 and shake block 45 are as shown in Figure 5, be under the state that the object axis 51 of shake block 45 is parallel with warp thread direction, be assemblied in separately on bolster 36 relative to the mode of warp thread direction angulation α with the line segment L at through hole 43a, 43b center making connection base component 37.In addition, so-called angle [alpha] sets according to the relation with the path of the 2nd limit yarn 16c described later here, describes in detail below.

Along with the shake of above-mentioned shake block 45 between 2 shake positions (shake limit), base component 37 using line segment L relative to the position of warp thread direction angulation α as centre position, and with the axle center of bolster 36 (center of through hole 43c, 45c) for the shake of shake center.In addition, at shake block 45 towards under the state of shaking by anti-longitude yarn row side, the ratio bolster 36 of base component 37 leans on the part of longitude yarn row side to be positioned at side, most upstream (state shown in Fig. 7 (a)), and this position becomes the shake limit of the upstream side of base component 37.Again, at shake block 45 towards under the state of shaking by longitude yarn row side, the ratio bolster 36 of base component 37 leans on the part of longitude yarn row side to be positioned at most downstream side (state shown in Fig. 7 (b)), and this position becomes the shake limit in the downstream of base component 37.

And, at the shake limit place (under the state shown in Fig. 7 (a)) of the described upstream side of base component 37, in the warp direction, yarn guide rod 38a, 38b are positioned at side, most upstream on limit, on woven pieces direction, limit yarn guide rod 38a is positioned at and is positioned at leans on longitude yarn row side most by anti-longitude yarn row side, limit yarn guide rod 38b.Again, at the shake limit place (under the state shown in Fig. 7 (b)) in the described downstream of base component 37, in the warp direction, yarn guide rod 38a, 38b are positioned at most downstream side on limit, on woven pieces direction, limit yarn guide rod 38a is positioned at and is positioned at leans on anti-longitude yarn row side most by longitude yarn row side, limit yarn guide rod 38b.Therefore, drive unit 8 drives described displacement parts 7 that the position of each eyelet 4 of limit yarn guide rod 38a, 38b is periodically switched between the longitude yarn row side and these two positions, anti-longitude yarn row side in woven pieces direction relative to the 2nd limit yarn 16c.

Then, with reference to Fig. 2,3,6 opposite side yarn shedding motions 3 are described in detail.Limit yarn shedding motion 3 is the devices making the path of the 2nd limit yarn 16c conjugate up and down across the path of the 1st limit yarn 16a, 16b in the vertical direction.The primary structure of limit yarn shedding motion 3 possesses: by rotatable parts 10, drive unit 11 and driving control device 140, describedly comprised the component 9 coordinated with the 2nd limit yarn 16c by rotatable parts 10, described drive unit 11 makes by rotatable parts 10 around pivot center rotating drive toward the direction, and the rotating drive of described driving control device 140 pairs of drive units 11 controls.

The drive unit 11 of present embodiment is made up of Direct driver type motor (hereinafter referred to as " DD motor ").In fig. 2, the DD motor 58 as drive unit 11 is gerotor type, and it is made up of with the rotor 59b making the outer peripheral face state relative with the inner peripheral surface of stator arrange annular stator 59a.Stator 59a is arranged on the scaffold 32 shown in Fig. 2 to make the pivot center 60 (with reference to Fig. 6) of DD motor 58 towards the state in woven pieces direction, and thus, DD motor 58 is fixed on the side of the longitude yarn row side of scaffold 32 on woven pieces direction.

The rotor 59b of DD motor 58 is equipped with by rotatable parts 10 according to not relatively turnable mode.In the present embodiment, as by rotatable parts 10, possess by the main part 12 of DD motor 58 rotating drive, main part 12 is provided with fitting pin 13, described fitting pin 13 is as component 9, outstanding from main part 12 towards longitude yarn row side on woven pieces direction.

As shown in Figure 6, main part 12 is made up of rolling disc 61 and support column 63, and described rolling disc 61 is the lamellar parts forming disc-shape, and described support column 63 is arranged on rolling disc 61.Main part 12 is with the state making the center of rolling disc 61 consistent with the pivot center 60 of DD motor 58, the longitude yarn row side of the DD motor 58 on woven pieces direction is fixed on the not shown rotor 59b of DD motor 58, further, main part 12 can be centered around the pivot center 60 that woven pieces direction extends and rotates.Main part 12 is fixedly arranged on the framework 20 of loom via the scaffold 32 shown in DD motor 58, Fig. 2 and support 30.

The support column 63 of rolling disc 61 is provided with fitting pin 13.Fitting pin 13 is as lower component: by coordinating with the 2nd limit yarn 16c, guide in the vertical direction to the path of the 2nd limit yarn 16c, and the path of the 2nd limit yarn 16c is conjugated in the vertical direction.

Fitting pin 13 is the parts of pole shape in the example in the figures, and the end of the longitude yarn row side on woven pieces direction has jaw portion 62, and object is to prevent the 2nd limit yarn 16c from coming off.Again, fitting pin 13, to make its axis towards the state in woven pieces direction, woven pieces direction is fixed on the side of longitude yarn row side of support column 63.Therefore, if by the main part 12 of rotatable parts 10 by DD motor 58 rotating drive, then fitting pin 13 revolution motion on the swing-around trajectory centered by pivot center 60.In addition, below, by in the position of the fitting pin 13 on above-mentioned swing-around trajectory, the position (most down position) of the fitting pin 13 of the downside of above-below direction in center (center of the rolling disc 61) position of the swing-around trajectory of warp thread direction is set to the 1st position P1, and the position (most lifting position) of upside is set to the 2nd position P2.

In the present embodiment, guiding parts 27 is located at limit yarn shedding motion 3 and upholds between device 25, under the state while there is not fitting pin 13 (imagination) eliminating fitting pin 13, the path of the 2nd limit yarn 16c in the vertical direction, is specify according to the height and position (connecting the guiding position of guiding parts 27 and the straight line of fell 24) of guiding parts 27 relative to fell 24.

And, structure in present embodiment is as follows: according to the relation in the path of the 2nd limit yarn 16c with limit yarn guiding parts 27 and fell 24 defined, when the above-below direction component of the revolution motion of fitting pin 13 is ascent direction, 2nd limit yarn 16c is engaged pin 13 and lifts from downside and conjugate towards upper direction, again, when the above-below direction component of the revolution motion of fitting pin 13 is descent direction, the 2nd limit yarn 16c follows the decline of fitting pin 13 by the tension force of self and conjugates towards lower direction.

Guiding parts 27 is formed by the parts of general cylindrical shape, and, by to make its axis be fixed in fixing hole 31a towards the state in woven pieces direction, guiding parts 27 is made to be fixedly arranged on the framework of loom, described fixing hole 31a is located on pillar 31, and described pillar 31 erects on beam part 21.As shown in Figure 6, the side face of the barrel surface of guiding parts 27 has guide groove 66c, described guide groove 66c across the circumferencial direction of described guiding parts 27, for leading to the 2nd limit yarn 16c.And guiding parts 27 is limited the path of the 2nd limit yarn 16c on above-below direction and woven pieces direction by this guide groove 66c.

In addition, as shown in Figure 6, guiding parts 27 is configured to: on woven pieces direction, and the guide groove 66c led to the 2nd limit yarn 16c becomes the expanded range of the fitting pin 13 of limit yarn shedding motion 3.

In the present embodiment, guiding parts 27 is also also used as and leads to the 1st limit yarn 16a, 16b.Therefore, on the side face of the barrel surface of guiding parts 27 except above-mentioned guide groove 66c, be also formed with guide groove 66a, the 66b for leading to the 1st limit yarn 16a, 16b.In addition, guide groove 66a, 66b, on the axis direction of guiding parts 27, compare guide groove 66c and are positioned at anti-longitude yarn row side and the expanded range comparing the fitting pin 13 in woven pieces direction is positioned at anti-longitude yarn row side.3 guide grooves carrying out for opposite side yarn 16 leading are from being arranged in order successively according to guide groove 66b, 66a, 66c for yarn side, 3 guide grooves lead to the 1st limit yarn 16b, 16a and the 2nd limit yarn 16c respectively successively from for yarn side, further, at above-below direction and woven pieces direction, the path to these limit yarns 16 limits 3 guide grooves.

And then, in the present embodiment, limited by the path of the 2nd limit yarn 16c in the limiting part 15 pairs of woven pieces directions be arranged between limit yarn shedding motion 3 and limit yarn path switching device 2.Limiting part 15 is the positions of limit yarn guide rod 38a, 38b at limit yarn path switching device 2, makes the path of the 2nd limit yarn 16c on woven pieces direction, maintain the position of hope.

Limiting part 15 is illustrated in greater detail, as shown in Figure 1, in the present embodiment, limit yarn shedding motion 3 is on woven pieces direction, compare and knit end 19 and be configured in anti-longitude yarn row side, fitting pin 13 is also positioned at the outside (anti-longitude yarn row side) of knitting end 19 mode with its front end exists.Therefore, the guide groove 66c of described guiding parts 27 is also positioned at the outside of knitting end 19 on woven pieces direction.Thus, if imagination omits limiting part 15, do not make fitting pin 13 coordinate with the 2nd limit yarn 16c, and the knit end 19 of the 2nd limit yarn 16c directly from guiding parts 27 towards fell 24 is led, then the path of the 2nd limit yarn 16c is in the state relative to warp thread direction (knitting end 19) angulation.On the other hand, due to limit yarn shedding motion 3 be set to by the rolling disc 61 of rotatable parts 10 parallel with warp thread direction (knitting end 19), so fitting pin 13 is along with the rotation of rolling disc 61, on woven pieces direction with knit the distance that end 19 keeps constant, and fore-and-aft direction displacement in the warp direction.

Thus, if imagination omits limiting part 15, to make the state of knitting end 19 guiding of the 2nd limit yarn 16c directly from guiding parts 27 towards fell 24, fitting pin 13 is coordinated with the 2nd limit yarn 16c, then when fitting pin 13 is positioned at most downstream side and when being positioned at side, most upstream, the position in the woven pieces direction of the 2nd limit yarn 16c is different relative to fitting pin 13.Thus, 2nd limit yarn 16c comes and goes towards woven pieces direction on fitting pin 13, the mated condition of the 2nd limit yarn 16c and fitting pin 13 becomes unstable, along with by the continuous rotation of rotatable parts 10 (fitting pin 13), the 2nd limit yarn 16c may be caused to come off from fitting pin 13.

In addition, when the structure of fitting pin 13 being set to the mated condition maintaining fitting pin 13 and the 2nd limit yarn 16c, also can not there is even without limiting part 15 problem that the 2nd limit yarn 16c as above comes off from fitting pin 13.But, even if in this case, although it is constant in the position of fell 24 to knit end 19, but along with by the continuous rotation of rotatable parts 10 (fitting pin 13), the position front and back change in the warp direction of fitting pin 13, so, the angle that the path of the 2nd limit yarn 16c between fitting pin 13 and fell 24 and warp thread direction still can be caused to be formed periodically changes, and causes the path of the 2nd limit yarn 16c between fitting pin 13 and fell 24, produce vibration (coming and going displacement) on woven pieces direction.And, in this case, such as: when fitting pin 13 conjugates from described 2nd position P2 towards the 1st position P1, in the process of its displacement, the path of the 2nd limit yarn 16c changes, and the 2nd limit yarn 16c occurs correctly is not guided to the situation between limit yarn guide rod 38a, 38b of limit yarn path switching device 2.In order to prevent this situation, be necessary that the waving angle making base component 37 increases, if but the waving angle of base component 37 is increased, then the possibility cannot tackling weaving machine high-speed running increases.

So, in the present embodiment, limiting part 15 is set between limit yarn shedding motion 3 and limit yarn path switching device 2, its object is to: the vibration that the position relationship eliminating fitting pin 13 and the 2nd limit yarn 16c produces along with the change occurred by the rotation of rotatable parts 10 and the path of the 2nd limit yarn 16c in downstream (fell side) of eliminating limit yarn shedding motion 3 on woven pieces direction.

As shown in Figure 2,3; limiting part 15 is bar-like member in the present embodiment; further, so that its lower end is chimeric with the hole of upper surface of the electromagnet housing 49 being located in drive unit 8 and upper end is bearing in the form extended in the vertical direction for the state on the protection pillar 68 of supporting and protecting parts 33 arranges.The diameter that the size of the above-below direction (bearing of trend) of limiting part 15 is compared on the above-mentioned swing-around trajectory of fitting pin 13 extends in longer scope.

As shown in Figure 6, faced by the week of anti-longitude yarn row side, the 2nd limit yarn 16c's limiting part 15 leads.And limiting part 15 is configured on woven pieces direction: the ora terminalis of anti-longitude yarn row side is positioned at identical position with the guide groove 66c of described guiding parts 27.Thus, the path of the 2nd limit yarn 16c is in the state parallel with warp thread (knitting end) between the guiding parts 27 before and after limit yarn shedding motion 3 and limiting part 15.Therefore, in limit yarn shedding motion 3, the position relationship of path on woven pieces direction of fitting pin 13 and the 2nd limit yarn 16c is always constant in by the rotation of rotatable parts 10, so can prevent the 2nd limit yarn 16c from coming off from fitting pin 13 along with the continuous rotation by rotatable parts 10.

Again, as mentioned above, because the path of the 2nd limit yarn 16c is parallel with by the rolling disc 61 of rotatable parts 10, so along with the rotation of main part 12, even if fitting pin 13 also rotates, the 2nd limit yarn 16c also can not conjugate on woven pieces direction, and only conjugates in the vertical direction.Therefore, above-mentioned vibration can not be produced at the 2nd limit yarn 16c in the downstream of limit yarn shedding motion 3.

Again, the path of the 2nd limit yarn 16c is limited between limit yarn shedding motion 3 and limit yarn path switching device 2 by this limiting part 15, so be always constant position from the path of limiting part 15 the 2nd limit yarn 16c to fell 24 in woven pieces direction.In addition, be directed to limiting part 15 and the path of the 2nd limit yarn 16c guided towards fell 24 in the present embodiment, woven pieces direction forms described angle [alpha] (with reference to Fig. 5) relative to warp thread 18.

Again, in the present embodiment, as shown in Figure 6, the side of the longitude yarn row side of rolling disc 61 is provided with cover 69, described cover 69 interferes for preventing the 2nd limit yarn 16c and fitting pin 13 support column 63.Cover 69 is annular disk-shaped parts that external diameter is substantially identical with rolling disc 61, and, install with the state that Shi Qi center is consistent with the center of rolling disc 61.

Then, the path of the 1st limit yarn 16a, 16b and the 2nd limit yarn 16c is described.1st limit yarn 16a, the path of 16b and the 2nd limit yarn 16c is roughly: on woven pieces direction, from the position relationship in the path of each limit yarn 16 of each bobbin 22 to limit yarn path switching device 2 as shown in Figure 1, according to the 1st limit yarn 16b from anti-longitude yarn row side, 1st limit yarn 16a, the order of the 2nd limit yarn 16c is constant, from the position relationship in the path of each limit yarn 16 of limit yarn path switching device 2 to fell 24 as shown in Figure 7, the path of the 2nd limit yarn 16c is constant, the path of the 1st limit yarn 16a is passed through from the side of left and right across the path of the 2nd limit yarn 16c, the path of the 1st limit yarn 16b is passed through from the opposite side of left and right across the path of the 2nd limit yarn 16c, along with the action of limit yarn path switching device 2, the path of the 1st limit yarn 16a and the path of the 1st limit yarn 16b are switched.

Again, in the vertical direction as shown in FIG. 6 and 7, from the order of position relationship from upside in the path of each limit yarn 16 of guiding parts 27 to limit yarn path switching device 2 be: the 2nd limit yarn 16c, 1st limit yarn 16a, 1st limit yarn 16b, from the position relationship in the path of each limit yarn 16 of limit yarn path switching device 2 to fell 24 be: the path of the 1st limit yarn 16a and the 1st limit yarn 16b is constant, the path of the 2nd limit yarn 16c is from the 1st limit yarn 16a, pass through above or below the path of 16b, along with the action of limit yarn shedding motion 3, its upper-lower position is relative to the 1st limit yarn 16a, the path of 16b is switched.

In FIG, the 2nd limit yarn 16c is released from bobbin 22c, and guides to fell 24 through extension device 25, the guide groove 66c of guiding parts 27, limit yarn shedding motion 3 in order from upstream side.Again, as shown in Figure 2, the 2nd limit yarn 16c passes through from the upside of the fitting pin 13 of limit yarn shedding motion 3 between guiding parts 27 and fell 24.Therefore, 2nd limit yarn 16c is along with by the rotation of rotatable parts 10, lifted to top from above-mentioned 1st position P1 towards the displacement of the 2nd position P2 by fitting pin 13, and to be positioned in fitting pin 13 from the 2nd position P2 towards the displacement of the 1st position P1 by fitting pin 13 and to decline.Like this, the path of the 2nd limit yarn 16c is changed in the vertical direction by the action of limit yarn shedding motion 3 between guiding parts 27 and fell 24.And in the present embodiment, as shown in Figure 2, when fitting pin 13 is at described 1st position P1, the 2nd limit yarn 16c and the 1st limit yarn 16a, 16b forms limit yarn opening.

Initial stage path as the 2nd limit yarn 16c of the lower yarn of limit yarn opening is described above, is to specify with fell 24 and guiding parts 27, and this path is consider and the interference of reed 29 and miscellaneous part etc. and setting in the vertical direction.Specifically, according to the relation with wefting insertion, the opening amount that the opening amount of limit yarn opening is preferably large, the path of the 2nd limit yarn 16c directly guiding towards fell 24 from guiding parts 27 for making the 2nd limit yarn 16c is (following, be called in " the initial stage path of the 2nd limit yarn 16c "), such as, relative to the angle also preferred wide-angle that warp WL is formed.But, if this angle arranges excessive, then by cause with reed 29 on the downside of lid etc. interfere.So, the initial stage path setting of the 2nd limit yarn 16c is: pass through from the below of the weft guide groove 29a of reed 29 under the state that at least reed 29 is arranged in most going-back position (position when main shaft angle of present embodiment loom is 180 °), and do not interfere reed 29 and reed frame 29b etc.

Again, according to the configuration relation with miscellaneous part, when worrying to interfere miscellaneous part, also will consider with the basis of the interference of miscellaneous part on set the initial stage path of the 2nd limit yarn 16c.In addition, miscellaneous part mentioned here can be enumerated such as: the limit yarn path switching device 2 of limit of the present invention forming apparatus 1 and heald frame 28a (lower side frame).In addition, if the position of fell 24 is fixing, then the position on the above-below direction in the initial stage path of the 2nd limit yarn 16c sets according to the height and position of guiding parts 27.

As shown in Figure 1, the 1st limit yarn 16a is released from bobbin 22a, and guides to limit yarn path switching device 2 through the guide groove 66a of extension device 25, guiding parts 27 in order from upstream side.

The 1st limit yarn 16a guided from guiding parts 27 towards limit yarn path switching device 2 as shown in Figure 2, be directed to the 1st limit yarn guiding 67a, eyelet 4 that the 1st limit yarn leads 44a and limit yarn guide rod 38a and arrive fell 24, described 1st limit yarn guiding 67a is fixed on scaffold 32, and described 1st limit yarn guiding 44a is arranged on the base component 37 of limit yarn path switching device 2.

Equally, the 1st limit yarn 16b is released from bobbin 22b, and from upstream side in order through upholding the guide groove 66b of device 25, menopause tablet device 26, guiding parts 27, arrives limit yarn path switching device 2.The 1st limit yarn 16b fixed guide being directed to limit yarn path switching device 2 fixes on the eyelet 4 of the 1st limit yarn guiding 67b on scaffold 32, the 1st limit yarn guiding 44b and limit yarn guide rod 38b be arranged on the base component 37 of limit yarn path switching device 2, guides to fell 24.In addition, in the example in the figures, the 1st limit yarn 16b compares the 1st limit yarn 16a and passes through from the path of anti-longitude yarn row side, and, pass through from the downside of the 1st limit yarn 16a.

As the upper yarn of limit yarn opening the 1st limit yarn 16a, 16b from the path of eyelet 4 to fell 24, be by the position regulation of the eyelet 4 of limit yarn guide rod 38a, 38b.And, from the position of the above-below direction in the path of eyelet 4 to fell 24 be consider with the relation of wefting insertion, with the interference of reed 29 and miscellaneous part etc. and setting.Specifically, because the position on the above-below direction in the path of the 1st limit yarn 16a, 16b is fixing, so first consider that the relation with wefting insertion sets the path of the 1st limit yarn 16a, 16b.Namely, the opening amount of limit yarn opening is necessary for can the size of wefting insertion, so the path of the 1st limit yarn 16a, 16b is according to the relation of the position of the reed 29 with wefting insertion start time (in present embodiment, main shaft angle is the position in the moment of 70 °), be set as that the top of the weft guide groove 29a from reed 29 is passed through, to obtain above-mentioned opening amount.

On the other hand, for the position above this, only preferably higher with regard to the relation of itself and wefting insertion position, that is, relative to the preferred wide-angle of angle that warp WL is formed, if but this angle is excessive, then by cause with reed 29 on the upside of lid etc. interfere.So the path of the 1st limit yarn 16a, 16b is set in the scope of not interfering reed 29 and reed frame 29b etc. under the state that at least reed 29 is positioned at most going-back position.Again, consider the interference of the 1st limit yarn 16a, 16b and miscellaneous part sometimes, in the case, be set in the scope of not interfering with miscellaneous part.

And for the path of the 1st limit yarn 16a, 16b, also need to consider the relation in the path of itself and the 2nd limit yarn 16c.That is, when the path of switching the 1st limit yarn 16a, 16b, fitting pin 13 is under the state of the 2nd position P2, and the path of the 2nd limit yarn 16c must be passed through from the top of limit yarn guide rod 38a (limit yarn guide rod 38b) front end.Therefore, in the vertical direction, if the position the highest in the scope do not interfered with reed 29 and miscellaneous part as above by the path setting of the 1st limit yarn 16a, 16b, then will cause the 2nd limit yarn 16c to interfere with these parts along with the rising of fitting pin 13.Therefore, consider that the path of the 2nd limit yarn 16c is in the state of the top being positioned at own path sometimes, by the path setting of the 1st limit yarn 16a, 16b in the scope that the path of the 2nd limit yarn 16c does not interfere with reed 29 and miscellaneous part.

In addition, lead 44a, 44b of the path guiding parts 27 comparing eyelet 4 upstream side in the warp direction of the 1st limit yarn 16a, 16b, the 1st limit yarn guiding 67a, 67b and the 1st limit yarn limits.

The object arranging the 1st limit yarn guiding 67a, 67b is: the path of the 1st limit yarn 16a, the 16b guided from guiding parts 27 towards the eyelet 4 of limit yarn guide rod 38a, 38b is limited in the position from being passed through by the downside of rotatable parts 10, in the warp direction, the 1st limit yarn guiding 67a, 67b is fixedly arranged on by between rotatable parts 10 and limit yarn path switching device 2.Make the path of the 1st limit yarn 16a, 16b as follows from the reason passed through by the downside of rotatable parts 10.

As shown in Figure 2 and Figure 6, in the present embodiment, 1st limit yarn 16a, 16b, at the upstream side of limit yarn shedding motion 3, is led by the guiding parts 27 of the below being positioned at limit yarn shedding motion 3 in the vertical direction, and the expanded range that woven pieces direction is compared fitting pin 13 is directed in anti-longitude yarn row side.On the other hand, the eyelet 4 being positioned at limit yarn guide rod 38a, the 38b in yarn shedding motion 3 downstream, limit is all positioned at the top of the described 1st position P1 of fitting pin 13 (most down position).

Therefore, in the structure of present embodiment, to make the 1st limit yarn 16a, 16b directly lead towards each eyelet 4 of limit yarn guide rod 38a, 38b from guiding parts 27, then the path of the 1st limit yarn 16a, 16b is in the state of interference edges yarn shedding motion 3.So, in the present embodiment, the 1st limit yarn guiding 67a, 67b is set, the path of the 1st limit yarn 16a, 16b is limited in the position from being passed through by the downside of rotatable parts 10.

In the present embodiment, the fitting pin 13 that the 1st limit yarn guiding 67a, 67b compares limit yarn shedding motion 3 on woven pieces direction is configured in anti-longitude yarn row side, is configured in the height roughly the same with the 1st position P1 of fitting pin 13 in the vertical direction.In addition, relative to the 1st limit yarn guiding 67a, the 1st limit yarn 67b that leads is configured in anti-longitude yarn row side on woven pieces direction, and, be configured in downstream in the warp direction, with the path making the 1st limit yarn 16b not with the paths intersect of the 1st limit yarn 16a.Again, the 1st limit yarn guiding 67b is configured in downside in the vertical direction.

1st limit yarn guiding 44a, 44b is arranged on the upper surface of the base component 37 of limit yarn path switching device 2, its objective is and prevents from interfering from the 1st limit yarn the 1st limit yarn 16a, the 16b that 67a, 67b lead towards the eyelet 4 of limit yarn guide rod 38a, 38b and the 2nd limit yarn 16c that lead.

In more detail, the 1st limit yarn guiding 67a, 67b leads to the 1st limit yarn 16a, 16b in the fixed position of the upstream side of limit yarn path switching device 2 (limit yarn guide rod 38a, 38b).On the other hand, each eyelet 4 of limit yarn guide rod 38a, 38b is shaken by base component 37 in the downstream of the 1st limit yarn guiding 67a, 67b.Therefore, when under the state that base component 37 is in any side shake limit in upstream side or downstream, a side in the path of the 1st limit yarn 16a, 16b or the opposing party, with guiding 67a, 67b with between limit yarn guide rod 38a, 38b woven pieces direction are passed through from the position of the paths intersect with the 2nd limit yarn 16c at the 1st limit yarn.

Therefore, if imagination makes the 1st limit yarn 16a, 16b directly lead towards each eyelet 4 of limit yarn guide rod 38a, 38b from the 1st limit yarn guiding 67a, 67b, then the position that the 1st limit yarn path of leading between 67a, 67b and each eyelet 4 of limit yarn guide rod 38a, 38b also intersects from the path (path of the 2nd limit yarn 16c of fitting pin 13 under the state of described 1st position P1) with the 2nd limit yarn 16c at most down position is in the vertical direction passed through.

Like this, in the process that the 2nd limit yarn 16c declines along with the displacement of fitting pin 13, one article in 2nd limit yarn 16c and the 1st limit yarn 16a, 16b interferes, and makes the 2nd limit yarn 16c can not drop to original position, is in the state that can not get the limit yarn opening amount of wishing.So in the present embodiment, the position near limit yarn guide rod 38a, 38b on base component 37 arranges the 1st limit yarn guiding 44a, 44b.To be led the position that 44a, 44b make on the downside of being limited in relative to the path of the 2nd limit yarn 16c of most down position from the path that the 1st limit yarn leads immediately below near 67a, 67b to limit yarn guide rod 38a, 38b of the 1st limit yarn 16a, 16b by the 1st limit yarn.

As shown in Figure 7, the 1st limit yarn guiding 44a, 44b is fixed on base component 37, and shakes integratedly with base component 37 (limit yarn guide rod 38a, 38b).Therefore, in the upstream side of base component 37 and the arbitrary shake limit in downstream, the path of the 1st limit yarn 16a, 16b, is also passed through from the position that the most down position than the 2nd limit yarn 16c is low by guiding 67a, 67b and the 1st limit yarn guiding between 44a, 44b at the 1st limit yarn.Again, on woven pieces direction, from the side the 1st limit yarn 16a, 16b that the path of the paths intersect with the 2nd limit yarn 16c is passed through from the below of the 2nd limit yarn 16c by and deflect towards the 1st limit yarn the lead top of 44b of 44a or the 1st limit yarn of leading.Therefore, the 1st limit yarn 16a, 16b does not interfere with the path of the 2nd limit yarn 16c at most down position and each eyelet 4 towards limit yarn guide rod 38a, 38b is directed.

In addition, as shown in Figure 5, in the present embodiment, under the object axis 51 of shake block 45 is in the state (described centre position in the swing range of base component 37) parallel with warp thread direction, to make the line segment L at the center of through hole 43a, 43b of connection base component 37 and from the mode of the path parallel of the 2nd limit yarn 16c of limiting part 15 to fell 24, base component 37 to be assemblied in bolster 36.And structure is in the present embodiment: in the described centre position of base component 37, the path that line segment L compares the 2nd limit yarn 16c on woven pieces direction is positioned at longitude yarn row side.

According to said structure, by regulating the shaking quantity of shake block 45, from upside, the centre position of line segment L can be made to be on the path of the 2nd limit yarn 16c by the upstream side of base component 37 and the shake limit in downstream.Thus, as shown in Figure 7, from upside, by the distance that above-mentioned each shake limit can make the position of each limit yarn guide rod 38a, 38b equal with the 2nd yarn 16c interval, limit, prevent the 2nd limit yarn 16c and limit yarn guide rod 38a, 38b from interfering, the 2nd limit yarn 16c can be made to conjugate more reliably at above-below direction, obtain the limit yarn opening amount of wishing.

In addition, the structure of the guiding parts 27 of present embodiment is as shown in Figure 6: led by guide groove 66 opposite side yarn 16, but be not limited in such structure, also the guiding parts 27 with guide groove 66 can be replaced, and change into such as: the guiding parts and each limit yarn 16 with the eyelet inserting limit yarn 16 are arranged accordingly, in the eyelet of each guiding parts, inserts each limit yarn 16 and each limit yarn 16 is led.

Then, opposite side yarn shedding motion 3 is described in the configuration of above-below direction relative to the initial stage path of the 2nd limit yarn 16c.In fig. 2, fitting pin 13 conjugates on swing-around trajectory, and described swing-around trajectory is specified by the periphery of the rotary motion trace of the support column 63 rotated centered by pivot center 60 (turning cylinder of DD motor 58).And described swing-around trajectory is set as meeting following condition.

Condition 1: at least at the 1st position P1, fitting pin 13 is positioned at the downside (separating with the 2nd limit yarn 16c) in the path of the 2nd limit yarn 16c.Namely, in the center of the swing-around trajectory (rolling disc 61) of warp thread direction, compare the center distance to the 1st position P1 (radius of gyration of fitting pin 13) short (Fig. 2) from swing-around trajectory (rolling disc 61) from the distance of center to the path of the 2nd limit yarn 16c of swing-around trajectory (rolling disc 61).In addition, the meaning of above-mentioned " at least at the 1st position P1 " also comprises following situation: before fitting pin 13 arrives the 1st position P1, and fitting pin 13 is in the position passed through from the lower position in the path of the 2nd limit yarn 16c.

Condition 2: at least at the 2nd position P2, (Fig. 3), in the position of the limit yarn guide rod 38a of warp thread direction, is passed through from upside (the anti-drive unit 8 side) position of yarn guide rod 38a front end, limit in the path of the 2nd limit yarn 16c coordinated with fitting pin 13.In addition, the meaning of above-mentioned " at least at the 2nd position P2 " also comprises following situation: before fitting pin 13 arrives the 2nd position P2, and the path of the 2nd limit yarn 16c is the path passed through from the upper side position of yarn guide rod 38a front end, limit.

And, in the present embodiment, in order to make described swing-around trajectory position in the vertical direction meet above-mentioned condition 1,2, will the position of the fitting pin 13 of this swing-around trajectory be formed and be set as follows as the center of rotation of the DD motor 58 of the center of rotation (center of swing-around trajectory) of this fitting pin 13.

(1) the 2nd position P2 of fitting pin 13 first, is set.Specifically, 2nd position P2 is set as with upper/lower positions: make the path of the 2nd limit yarn 16c of fitting pin 13 defined at the 2nd position P2 meet above-mentioned condition 2, and the reed frame 29b etc. on the upside of the reed 29 path of the 2nd limit yarn 16c not being interfered be positioned at the state of most going-back position.

(2) on this basis, with above-mentioned the 2nd position P2 set as benchmark, setting DD motor 58 configuration in the vertical direction.Specifically, relative to the centre position M (imagination position) of the above-below direction in the 2nd position P2 of setting and the initial stage path of the 2nd limit yarn 16c in (1), the center of rotation of DD motor 58 is set (assuming that) in the below (guiding parts 27 side) of this centre position M.The distance from the center of rolling disc 61 to fitting pin 13 can be obtained with the center of rotation of the DD motor 58 of this setting and the 2nd position P2 of setting in (1), the i.e. radius of gyration (radius of swing-around trajectory) of fitting pin 13, therefore, confirm the relation in the fitting pin 13 of this radius of gyration and the initial stage path of the 2nd limit yarn 16c, more particularly whether the downside scope in the initial stage path relative to the 2nd limit yarn 16c confirmed on swing-around trajectory is applicable to, and determine the center of rotation of DD motor 58 with the state making fitting pin 13 (swing-around trajectory) be positioned at downside relative to the initial stage path of the 2nd limit yarn 16c during hope.

In addition, as present embodiment, in the scope that limit yarn shedding motion 3 is configured at the heald frame group 28 of fore-and-aft direction, when determining center of rotation (center of swing-around trajectory) of described DD motor 58, certainly above-mentioned center to be determined in the scope that swing-around trajectory does not interfere heald frame 28a.Again, when miscellaneous part is present in around swing-around trajectory, also to consider the interference with these parts.Such as: with regard to the relation of heald frame 28a with regard to, in the vertical direction, when considering described 2nd position P2 to fix (as benchmark), above-mentioned center of rotation to be set in the radius of gyration of more downside fitting pin 13 relative to the position of above-mentioned centre position M larger, make described 1st position P1 close to heald frame 28a the not shown downside stave of 28b (support heald).Therefore, when determining described center of rotation, its prerequisite is necessary for and described 1st position P1 is not repeated with the actuating range of the downside stave of heald frame 28a.

(3) and, by determining the center of rotation of DD motor 58 as mentioned above, make the center of rotation of this DD motor 58 become the center of swing-around trajectory, and decide fitting pin 13 relative to the configuration of rolling disc 61 and the size etc. for the support column 63 that realizes this configuration according to the radius of gyration of described fitting pin 13.

As mentioned above, by the center of rotation of DD motor 58, the i.e. center of the swing-around trajectory of fitting pin 13 being set in the below of described centre position M, in the position at the center of the described swing-around trajectory of warp thread direction, must be shorter than the radius of swing-around trajectory (distance of center to the 2nd position P2 from swing-around trajectory) from the distance of center to the initial stage path of the 2nd limit yarn 16c of swing-around trajectory.Therefore, set the swing-around trajectory of fitting pin 13 as described above, the 1st position P1 (most down position) at least on swing-around trajectory, fitting pin 13 is in the position of the below in the initial stage path of the 2nd limit yarn 16c, and separates with the initial stage path of the 2nd limit yarn 16c.And during fitting pin 13 separates with the 2nd limit yarn 16c, the path of the 2nd limit yarn 16c is maintained described initial stage path (Fig. 2).

Again, as mentioned above, because the 2nd position P2 on swing-around trajectory is set as making the path of the 2nd limit yarn 16c meet described condition 2, so the path of the 2nd limit yarn 16c that the 2nd position P2 at least on swing-around trajectory coordinates with fitting pin 13 is in the vertical direction from the path (Fig. 3) that the upside of yarn guide rod 38a front end, limit (anti-drive unit 8 side) position is passed through in the position of the limit yarn guide rod 38a of warp thread direction.

As above, in the present embodiment, set the swing-around trajectory of fitting pin 13, it, relative to according to the relation of loom wefting insertion and the initial stage path of the 2nd limit yarn 16c of predetermined location and the path of the 1st limit yarn 16a, 16b, meets above-mentioned condition 1,2.

Then, with reference to Fig. 8, the drive unit 140 of the rotating drive of the drive unit 11 of control limit yarn shedding motion 3 is described.In the present embodiment, to extend for the purpose of during fitting pin 13 separates with the 2nd limit yarn 16c variable speed drives by rotatable parts 10.

In fig. 8, control device 146 and the DD motor 58 of driving control device 140 and loom are connected, again, it comprises setting apparatus 144, memory 142, position command generating unit 141, position control circuit 143, speed control circuit 145 and current control circuit 147, described setting apparatus 144 is for inputting the target location (hereinafter also referred to " motor pattern ") of the DD motor 58 of the main shaft angle corresponding to loom, described memory 142 is connected with setting apparatus 144 and stores the motor pattern be transfused to, control device 146 and the memory 142 of described position command generating unit 141 and loom are connected, accept the input of the angle signal θ of the loom main shaft inputted from the control device 146 of loom, there is the position command Pc corresponding with the target location of the DD motor 58 corresponding to memory 142, described position control circuit 143 is connected with position command generating unit 141, described speed control circuit 145 is connected with position control circuit 143, described current control circuit 147 is connected with speed control circuit 145 and DD motor 58.

The motor pattern of the DD motor 58 stored in memory 142 is inputted by the setting apparatus 144 be connected with memory 142, specifically, the rotational angle of DD motor 58 corresponding to the motor pattern of fitting pin 13 in loom 1 cycle and the main shaft angle of loom is made to input accordingly.The angle signal θ of the loom main shaft of the motor pattern of position command generating unit 141 based on the DD motor 58 be set in memory 142 and the control device 146 from loom, exports the position command Pc corresponding with the rotational angle θ of the loom main shaft in each moment to position control circuit 143.

Position control circuit 143 comprises comparing section 143a and position deviation enlarging section 143b, and in described comparing section 143a, input has the position command Pc from position command generating unit 141.Again, in comparing section 143a, input has the position feed back signal Pf from encoder EN, and described encoder EN detects the amount of spin of DD motor 58.Comparing section 143a compares position feed back signal Pf and position command Pc, and both position deviation Pd are outputted to position deviation enlarging section 143b.Position deviation enlarging section 143b makes the gain of this position deviation Pd and regulation amplify accordingly and exports speed control circuit 145 as speed command Sc.

Speed control circuit 145 comprises comparing section 145a and velocity deviation enlarging section 145b, and in described comparing section 145a, input has the speed command Sc from position control circuit 143.Again, in comparing section 145a, input the feedback speed signal Sf obtained based on the amount of spin of the DD motor 58 detected by encoder EN by differentiator 149.Comparing section 145a compares feedback speed signal Sf and speed command Sc, and both velocity deviation Sd are outputted to velocity deviation enlarging section 145b.Velocity deviation enlarging section 145b makes the gain of this velocity deviation Sd and regulation amplify accordingly, and exports current control circuit 147 as torque instruction Tc.

Current control circuit 147 comprises torque control division 147a, D/A converter 147b, current amplifier 147c and current detecting part 147d.Torque control division 147a, based on the torque instruction Tc from speed control circuit 145, exports the current-order Ic of the main shaft angle θ corresponding to loom.Current-order Ic is converted into analog signal and is input in current amplifier 147c in D/A converter 147b.Current amplifier 147c calculates the current deviation of the current value I that detected by current detector 147d and the current-order Ic from D/A converter 147b, and is supplied in DD motor 58 by the drive current corresponding to this current deviation.And DD motor 58 by rotating drive, becomes the amount of spin corresponding with the main shaft angle θ of the loom under the motor pattern be set in setting apparatus 144 by this drive current.

Then, be described with reference to the motor pattern of Fig. 9 to DD motor 58.In present embodiment, the motor pattern of DD motor 58 is set to: make the rotational angle of DD motor 58 become the relation shown in the curve [2] shown in Fig. 9 relative to the main shaft angle of loom.

In addition, in fig .9, transverse axis represents the main shaft angle of loom, and the longitudinal axis in the left side in the longitudinal axis represents the rotational angle of DD motor 58, and the longitudinal axis on right side represents the addendum modification of the above-below direction of the 2nd limit yarn 16c.

Again, as described below in detail to each curve [1] ~ [4] of Fig. 9.

Curve [1]: represent the curve (connect initial point and become the straight line of point of target rotational angle 360 ° of DD motor 58) of the rotational angle of the DD motor 58 when at the uniform velocity driving DD motor 58 relative to the relation of the main shaft angle of loom.

Curve [2]: represent at the rotational angle according to the DD motor 58 in motor pattern variable speed drives DD motor 58 situation of present embodiment relative to the curve of the relation of the main shaft angle of loom.

Curve [3]: the curve of displacement relative to the relation of the main shaft angle of loom representing the fitting pin 13 of when at the uniform velocity driving DD motor 58 (curve [1]).

Curve [4]: represent when according to present embodiment motor pattern variable speed drives DD motor 58 (curve [2]) the displacement of fitting pin 13 relative to the curve of the relation of the main shaft angle of loom.

Be described in detail with reference to the motor pattern (curve [2]) of Fig. 9 and Figure 10 to present embodiment.In addition, below as shown in Figure 10, the interval of the upside (anti-guiding parts 27 side) in the initial stage path of the 2nd limit yarn 16c in described swing-around trajectory is set to the 1st interval, the interval of the downside (guiding parts 27 side) of the 2nd limit yarn 16c is set to the 2nd interval (hereinafter referred to as " between stacking area ").Again, in the following description, main shaft angle fitting pin 13 being arrived the starting point in the 2nd interval is set to " the 1st rotational angle ", is set to by the main shaft angle that fitting pin 13 is reached home " the 2nd rotational angle ".And the motor pattern of present embodiment is set to following speed change pattern: compare the situation at the uniform velocity driving DD motor 58, fitting pin 13 is elongated by (hereinafter referred to as " during the 2nd (retention period) ") during the 2nd interval.

Namely, described motor pattern is set to: extending to make the separately period of fitting pin 13 and the 2nd limit yarn 16c elongated can during the limit yarn opening of wefting insertion, relative to the situation at the uniform velocity driving DD motor 58, DD motor 58 quick rotation is made in the mode making fitting pin 13 arrive the 2nd interval (between stacking area) from initial point as early as possible, after fitting pin 13 arrives the 2nd interval (between stacking area), by the mode in the 2nd interval (between stacking area), DD motor 58 is slowed down as far as possible for a long time to make fitting pin 13, after fitting pin 13 passes through between stacking area, the mode making DD motor 58 again arrive origin position with the moment that have rotated one week at the main shaft of loom makes DD motor 58 accelerate.

In addition, in the present embodiment, prerequisite is as follows: the main shaft angle that wefting insertion start time is set in loom is 70 ° of places, and the main shaft angle that wefting insertion finish time (weft yarn arrives the anti-moment for yarn side) is set in loom is 240 ° of places.Wherein, this wefting insertion start time (main shaft angle) and wefting insertion finish time (weft yarn arrives the anti-moment for yarn side) set according to the relation of the action with the mouth-opening action of warp thread and other structures of relevant wefting insertion.On this basis, as shown in Figure 9, the mode that when being 30 ° with the main shaft angle of loom, DD motor 58 is in origin position sets the phase place of DD motor 58, and when the main shaft of loom rotates a circle DD motor 58 continuously (≠ intermittent) rotate one week.Again, in present embodiment, in the initial stage path of the 2nd limit yarn 16c and the relation of swing-around trajectory, when DD motor 58 rotates 65 ° from initial point, fitting pin 13 arrives the starting point in the 2nd interval, and when DD motor 58 rotates 130 ° from initial point, fitting pin 13 arrives the terminal in the 2nd interval.

And, under the prerequisite of such limit yarn shedding motion structure, in present embodiment, decide according to following condition (a) ~ (e) when determining motor pattern.In addition, in explanation afterwards, by during before (retention period) during the 2nd, namely DD motor 58 be set to during the 1st during the loom main shaft angle 30 ° of origin position is to the 1st rotational angle.Again, in the present embodiment, as shown in Figure 9, and then during the 2nd during (retention period) in DD motor 58 is accelerated, afterwards, with basic close to state rotating drive DD motor 58 at the uniform velocity.So, in explanation afterwards, will and the 2nd during (the 2nd rotational angle) be set to during the 3rd between continuous print accelerated period, and to be set to during the main shaft angle 30 ° of later during the 3rd until loom next time during the 4th.Velocity mode (velocity of rotation) during (a) the 1st

For the velocity of rotation of the DD motor 58 during the 1st, do not establish between deceleration period, but be set to close to speed at the uniform velocity.

Velocity mode (velocity of rotation) during (b) the 4th

During 4th be DD motor 58 rotate after one week with the next 1st during during continuous print, for the velocity of rotation of the DD motor 58 during the 4th, the speed in its latter stage is set to the 1st during preliminary phase with speed, and same with during the 1st be substantially at the uniform velocity, not shift during the 1st with acceleration and deceleration the latter stage during the 4th.

(c) the 1st, the 2nd rotational angle

As mentioned above, in the present embodiment, motor pattern is set to: compare the situation at the uniform velocity driving DD motor 58, elongated during the realized by this motor pattern the 2nd.Therefore, relative to the situation at the uniform velocity driving DD motor 58, by least one party in the 1st rotational angle and the 2nd rotational angle, the moment such as the 1st rotational angle being set in morning, the 2nd rotational angle need be set in the late moment.So, in the present embodiment, compares the situation at the uniform velocity driving DD motor 58, the 1st rotational angle is set in the moment early, and the 2nd rotational angle is set in the late moment by the situation comparing at the uniform velocity driving DD motor 58.

The speed of the DD motor 58 of (d) the 1st, the 2nd before and after rotational angle

In the front and back of the front and back of the 1st rotational angle and the 2nd rotational angle not with acceleration and deceleration.Namely, the speed at the initial stage during the 2nd after the latter stage during the 1st before and then the 1st rotational angle and and then the 1st rotational angle is set to substantially identical, and the speed at the initial stage during the 3rd after the latter stage during the 2nd before and then the 2nd rotational angle and and then the 2nd rotational angle is set to substantially identical.

Acceleration and deceleration in (e) motor pattern

The impact caused due to the caloric value of acceleration and deceleration on DD motor 58 is comparatively large, can allow in the scope (permissible acceleration range) of caloric value so the size of acceleration and deceleration be limited in running continuously.

And, when reality determines motor pattern, because the speed (velocity mode) of each period impacts the initial stage speed during front and back and length during this period, set so the speed (velocity mode) of each period and length are consideration and the relation during other.

Such as, the length during the 1st decides according to the 1st rotational angle, and as above-mentioned condition (c), the 1st rotational angle is set in the moment than at the uniform velocity driving the 1st rotational angle in DD motor 58 situation Zao.But if the 1st rotational angle to be set to the moment early, then the velocity of rotation of the DD motor 58 meanwhile during the 1st accelerates, and its result, according to described condition (b), the velocity of rotation of the DD motor 58 during the 4th also accelerates.In this case, the rising degree due to the velocity of rotation during the 3rd becomes large, so must make the length during the 3rd, does not exceed permissible acceleration range described in described condition (e) to make the acceleration during the 3rd.On the other hand, if elongated during the 3rd, then the 2nd rotational angle is impacted.Namely, substantially at the uniform velocity to drive the length during the 4th of DD motor 58 the to be determine with the velocity of rotation of DD motor 58, during setting the 3rd based on during the determine like this 4th, just become moment more early by being set as more growing the 2nd rotational angle during the 3rd.Wherein, the 2nd rotational angle must be as described in ratio as described in condition (c) at the uniform velocity drive the moment that the 2nd rotational angle when DD motor 58 is late.In sum, when determining the length during the 1st (velocity of rotation during the 1st, the 4th), the acceleration and length etc. during the 2nd rotational angle and the 3rd must be considered.

Again, the length (velocity of rotation during the 1st) during the 1st is also relevant to the velocity mode during the 2nd and length.Namely, initial stage speed during as described in above-mentioned condition (d) the 2nd is set to substantially identical with during the 1st, but when comparing elongated during at the uniform velocity driving the situation of DD motor 58 to make the 2nd as above, because the average rotation speed of the DD motor 58 during the 2nd is slower than initial stage speed, thus must during the 2nd in slow down.Wherein, this deceleration also must not exceed the permissible acceleration range described in above-mentioned condition (e).In this case, if the velocity of rotation of the DD motor 58 during the 1st is not fully slowed down in described permissible acceleration range, then the rotational angle of DD motor 58 reaches 130 ° in the moment more early, has to the length during the 2nd is shortened.But as mentioned above, the 2nd rotational angle must be when in the moment more late than the 2nd rotational angle when at the uniform velocity driving DD motor 58.Therefore, during determining the 1st when length (the 1st rotational angle), the velocity mode (deceleration) during the 2nd and length must be considered.

In addition, as an above-mentioned example, be conceived to the length during the 1st and describe with other during speed (velocity mode) and the relation of length, but be conceived to any period can describe all equally with other during relation.

And rand described above meets above-mentioned condition limit and considers that the result of the relation of each period is the motor pattern of the present embodiment shown in curve [2] that can obtain Fig. 9.In addition, this motor pattern is specific as follows.

It is 85 ° that 1st rotational angle (fitting pin 13 arrives the main shaft angle of the starting point in the 2nd interval) determines.That is, when main shaft angle is 85 ° the rotational angle of DD motor 58 be 65 ° (at main shaft from during the rotation of 30 ° ~ 85 °, DD motor 58 rotates 65 ° from initial point).In addition, when setting the 1st rotational angle as described above, in the wefting insertion start time (main shaft angle is 70 °) of loom, the position of the fitting pin shown in curve [4] does not arrive the starting point in the 2nd interval, but as the opening amount of limit yarn, do not bring obstacle to wefting insertion.In addition, in the situation (curve [3]) at the uniform velocity driving DD motor 58, the main shaft angle that fitting pin 13 arrives the starting point in the 2nd interval is 95 °.Therefore, in the motor pattern of present embodiment, compared with at the uniform velocity driving the situation of DD motor 58, the moment of the starting point in arrival the 2nd interval, position of fitting pin 13 is done sth. in advance about main shaft angle.

Again, setting the result of the 1st rotational angle is as described above that the velocity of rotation of DD motor 58 during the 1st is faster than velocity of rotation when at the uniform velocity driving DD motor 58.And the velocity of rotation of the DD motor 58 meanwhile during the 4th is also fast than velocity of rotation when at the uniform velocity driving DD motor 58.

It is 190 ° that 2nd rotational angle (fitting pin 13 arrives the main shaft angle of the terminal in the 2nd interval) determines, is the moment more late than the main shaft angle 160 ° in the situation at the uniform velocity driving DD motor 58 (curve [1]).And, after main shaft angle 190 ° (during the 3rd) motor pattern in the caloric value that produces along with the acceleration of DD motor 58 speedup be permissible in running continuously.In addition, when determining the 2nd rotational angle as described above, in the wefting insertion finish time (main shaft angle is 240 °) of loom, curve [4] although shown in the position of fitting pin 13 have passed the terminal in the 2nd interval, the opening amount of limit yarn does not have overslaugh wefting insertion (flight of weft yarn).

For the velocity of rotation (velocity mode) of the DD motor 58 of (the 1st rotational angle ~ the 2nd rotational angle) during the 2nd, the velocity of rotation at initial stage is decided to be substantially identical with the velocity of rotation during the 1st, slow down in back to back period (mid-term), and between this deceleration period the velocity of rotation in the latter stage that (mid-term) is later be set to corresponding with the degree of deceleration in mid-term basic be velocity of rotation at the uniform velocity.On this basis, the deceleration in described mid-term does not exceed described permissible acceleration range.

Again, set the velocity mode during the 2nd as described above, decide the initial stage speed during the 3rd according to the speed in described latter stage during the 2nd, as the acceleration during the 3rd between accelerated period be with the velocity of rotation and the described 4th in the described latter stage during the 2nd during velocity of rotation decide.Wherein, the acceleration during the 3rd is also in described permissible acceleration range.

In addition, in illustrated motor pattern, during after between the accelerated period during before the 1st rotational angle after (main shaft angle is 30 ° ~ 85 °) and the 2nd rotational angle, become the form close to being roughly straight line (at the uniform velocity), but be not at the uniform velocity drive DD motor 58 strictly speaking.This is the result that the mode that changes with making overall curve smoothing sets motor pattern.

Then, with reference to Fig. 2,3, the action of 7 opposite side forming apparatuss 1 is described.Loom, in weaving, in limit yarn shedding motion 3, often rotates a circle with loom main shaft, viewed from the longitude yarn row side in woven pieces direction, driven not shown DD motor 58 by the mode that rotatable parts 10 (fitting pin 13) clockwise rotates a circle.Again, the rotational angle of loom main shaft is set as in the present embodiment as mentioned above with the phase relation of the fitting pin 13 rotated on swing-around trajectory: when main shaft angle is 30 °, the centre position (initial point) of fitting pin 13 between the 2nd position P2 and the 1st position P1 (with reference to Figure 10).In addition, the rotational angle of loom main shaft is not limited in above-mentioned setting with the phase relation of the fitting pin 13 rotated on swing-around trajectory, also can change relative to loom main shaft the phase place of rotatable parts 10 as required.

Again, in limit yarn path switching device 2, the opportunity of base component 37 from the shake limit in above-mentioned upstream side or downstream towards another shake limit shake (opportunity of the electromagnet polarity of switching driving device 8, namely switch opportunity in the path of the 1st limit yarn 16a, 16b) is set as that the fitting pin 13 of limit yarn shedding motion 3 arrives the moment of described 2nd position P2.

(1) as shown in Figure 2, in weaving, in limit yarn shedding motion 3, along with by the rotation of rotatable parts 10, fitting pin 13 conjugates from described 2nd position P2 towards described 1st position P1 on above-mentioned swing-around trajectory, thus the path (hereinafter referred to as " part path ") of the 2nd limit yarn 16c from fitting pin 13 to fell 24 is conjugated downward from most lifting position in the vertical direction.On the other hand, the position in the vertical direction, path of the 1st limit yarn 16a, 16b is fixed.Therefore, along with the displacement of the described part path of the 2nd limit yarn 16c, described part path is in the state that the below towards the 1st limit yarn 16a, 16b conjugates, between the 2nd limit yarn 16c and the 1st limit yarn 16a, 16b, form limit yarn opening.If fitting pin 13 arrives the starting point in the 2nd interval (between stacking area) of swing-around trajectory, then fitting pin 13 separates with the 2nd limit yarn 16c, and the harness motion of the 2nd limit yarn 16c stops at maximum open position.Now, the 2nd limit yarn 16c passes through between limit yarn guide rod 38a and limit yarn guide rod 38b in the warp direction.The moment that fitting pin 13 and the 2nd limit yarn 16c stopped in maximum open position arrive the 2nd interval (between stacking area) terminal at fitting pin 13 coordinates again.

(2) in the process that the described part path of the 2nd limit yarn 16c after (1) forms limit yarn opening conjugates towards top, the moment that the wefting insertion arriving setting at the rotational angle of loom main shaft starts angle starts the wefting insertion of weft yarn, meanwhile also makes weft yarn towards wefting insertion in the yarn opening of limit.In addition, being started to pass through from the limit yarn aperture position for yarn side immediately after wefting insertion by the weft yarn front end of wefting insertion, and flying in Warp opening, knitting after end position passes through from anti-for yarn side, arriving the not shown anti-limit yarn opening for yarn side.Therefore, with the whole period at least at wefting insertion, limit yarn opening being become can more than the size (necessary opening amount) of wefting insertion mode, controls the driving of the DD motor 58 of the limit forming apparatus 1 for yarn side.Again, limit yarn opening is maintained more than described necessary opening amount at least to the mode till wefting insertion latter stage, the driving of the DD motor 58 of the not shown anti-limit forming apparatus 1 for yarn side is controlled.

(3) as shown in Figure 3, along with wefting insertion terminate after by the further rotation of rotatable parts 10, fitting pin 13 conjugates towards the 2nd position P2 on described swing-around trajectory, and, the most lifting position displacement upward of the described part path of the 2nd limit yarn 16c.Meanwhile, the described part path of the 2nd limit yarn 16c is in the state that the top towards the 1st limit yarn 16a, 16b conjugates, and the described weft yarn by wefting insertion is in the state of being restrained by the 1st limit yarn 16a, 16b and the 2nd limit yarn 16c.

(4) after, if fitting pin 13 arrives the 2nd position P2, then the described part path of the 2nd limit yarn 16c is in most lifting position, becomes the path passed through from the top of yarn guide rod 38a front end, limit.And in this moment, the drive unit 8 of limit yarn path switching device 2 makes base component 37 shake towards the shake limit of the opposing party around the axle center of bolster 36 from the shake limit of one.Thus, the path commutative on woven pieces direction (with reference to Fig. 7) of the anti-longitude yarn row side in woven pieces direction and the 1st limit yarn 16a, 16b of longitude yarn row side is laid respectively at seen from above relative to the path of the 2nd limit yarn 16c.Its result, the 1st limit yarn 16a, 16b is on woven pieces direction, intersects the state of (winding) with the 2nd limit yarn 16c.

(5) then, fitting pin 13 declines from described 2nd position P2 along with the further rotation by rotatable parts 10, meanwhile the described part path of the 2nd limit yarn 16c declines from most lifting position, and is that the moment of 0 ° is to beaten up by the weft yarn of wefting insertion (also with reference to Figure 10) in the main axis angle of loom.In addition, because the described part path of described 2nd limit yarn 16c declines from most lifting position, make the described part path of the 2nd limit yarn 16c towards the direction displacement making the limit yarn opening of contained weft yarn open.But, as mentioned above, because the 1st limit yarn 16a, 16b is in the state of intersecting on woven pieces direction with the 2nd limit yarn 16c, even if so the described part path of the 2nd limit yarn 16c conjugates towards the lower position of the 1st limit yarn 16a, 16b, described limit yarn opening also can not open, and still maintains the 1st limit yarn 16a, 16b and the 2nd limit yarn 16c restraining weft yarn.

The main shaft of loom often rotates a circle and just repeats described (1) ~ (5), and in institute, woven end formation 3 of knitting of weaving cotton cloth is wound around and twists limit.

Then, the concrete control of the DD motor 58 of opposite side yarn shedding motion 3 is described.In Fig. 8, in weaving, driving control device 140, based on described motor pattern, makes DD motor 58 from initial point towards next initial point variable speed drives.Therefore, in driving control device 140, the rotational angle signal θ of the main shaft of the motor pattern of position command generating unit 141 based on the DD motor 58 be set in memory 142 and the control device 146 from loom, exports the position command Pc corresponding with the main shaft angle in each moment the comparing section 143a of position control circuit 143.

Again, in the present embodiment, the control that have employed the DD motor 58 of motor pattern is that the angle on target of DD motor 58 is converted to target pulse number to carry out.More particularly, in the present embodiment, rotated a circle by DD motor 58 (360 °) are divided into 4092 parts, the angle on target of DD motor 58 are converted to the target pulse number of corresponding with the angle position of described decile 0 to 4092.On this basis, make and make the pulse meter that described target pulse number is corresponding with the main shaft angle of loom, and this pulse meter is pre-entered setting apparatus 144, be stored in memory 142, to drive DD motor 58 according to the motor pattern of above-mentioned setting.Therefore, the position command generating unit 141 of driving control device 140 is according to the described pulse meter in memory 142, with reference to the target pulse number corresponding with the rotational angle signal θ of loom main shaft, there is the position command Pc corresponding with the target pulse number of reference, output in the comparing section 143a of position control circuit 143.

The comparing section 143a of position control circuit 143 compares position feed back signal Pf and position command Pc, and is outputted in the 143b of position deviation enlarging section by both position deviation Pd.Position deviation enlarging section 143b makes this position deviation Pd amplify, and exports the comparing section 145a of speed control circuit 145 as speed command Sc.The comparing section 145a of speed control circuit 145 compares feedback speed signal Sf and speed command Sc, and is outputted in the 145b of velocity deviation enlarging section by both velocity deviation Sd.Velocity deviation enlarging section 145b makes this velocity deviation Sd amplify, and exports the torque control division 147a of current control circuit 147 as torque instruction Tc.

The torque control division 147a of current control circuit 147, based on the torque instruction Tc from speed control circuit 145, exports the current-order Ic corresponding with the rotational angle signal θ of loom main shaft.Current-order Ic is converted into analog signal at D/A converter 147b and is input in current amplifier 147c.Current amplifier 147c calculates the current deviation of the current value I that detected by current detector 147d and the current-order Ic from D/A converter 147b, and is supplied to DD motor 58 by the drive current corresponding with this current deviation.And DD motor 58 by rotating drive, becomes the rotational angle corresponding with the main shaft angle of the rotation mode be set in memory 142 by this drive current.

Then, the detailed action of opposite side yarn shedding motion (DD motor 58, fitting pin 13 etc.) is described.The result of carrying out drived control (variable speed drives) by above-mentioned driving control device 140 pairs of DD motors 58 is that limit yarn shedding motion 3 carries out following action in weaving.

(1) in Fig. 9 and Figure 10, during main shaft angle to turn to 85 ° the starting point of (retention period) (during 2) from 30 ° (during the 1st), DD motor 58 is to turn to 65 ° than speed fast when at the uniform velocity driving from initial point.Along with DD motor 58 turns to 65 ° from initial point, be in and be engaged the 2nd limit yarn 16c of pin 13 from downside upward state negatively to decline than at the uniform velocity driving the fast speed of the situation of DD motor 58 to be positioned in fitting pin 13.Along with the decline of the 2nd limit yarn 16c during the 1st, the path (hereinafter referred to as " part path ") of the 2nd limit yarn 16c till from fitting pin to fell, from the state shift above the 1st limit yarn 16a, 16b towards the state of the below of the 1st limit yarn 16a, 16b displacement, namely starts to form opening.

In addition, as mentioned above, fitting pin 13 is in the position of the below in the initial stage path of the 2nd limit yarn 16c in the 2nd interval (between stacking area) of swing-around trajectory, and separates with the 2nd limit yarn 16c.Again, as mentioned above, motor pattern is decided to be: compare and at the uniform velocity drive the situation of DD motor 58 about main shaft angle when the main shaft angle 85 ° in moment comparatively early, fitting pin 13 arrives the starting point in the 2nd interval (between stacking area).Therefore, the part path of the 2nd limit yarn 16c is also comparing the situation of at the uniform velocity driving DD motor 58 about the position of main shaft angle in the described initial stage path of moment arrival comparatively early, and is in the state defining described stop.

(2), during till main shaft angle turns to 190 ° from 85 ° (during the 2nd (retention period)), DD motor 58 turns to 130 ° from 65 °.And during the 2nd (retention period), drive DD motor 58 according to the velocity mode of (retention period) during the described 2nd.

In more detail, initial stage of (retention period) during the 2nd, with the velocity of rotation substantially identical with the velocity of rotation during the 1st by rotating drive.Therefore, DD motor 58 does not have larger acceleration and deceleration in the 1st rotational angle 65 ° of front and back and by rotating drive.Then, the velocity of rotation of DD motor 58 reduces speed now from above-mentioned velocity of rotation.Wherein, deceleration is now in above-mentioned permissible acceleration range.Afterwards, DD motor 58 with the velocity of rotation corresponding with the velocity of rotation at initial stage during the 3rd, until in during the 2nd rotational angle, with close to state at the uniform velocity by rotating drive to 130 °.

Like this, for the driving of the DD motor 58 of (retention period) during the 2nd, according to its before and after during the relation of velocity of rotation, the velocity of rotation of DD motor 58 is inevitable slack-off, even if but in this case, because described 2nd interval of fitting pin 13 at swing-around trajectory separates with the 2nd limit yarn 16c, thus make the harness motion of the 2nd limit yarn 16c not rely on the velocity of rotation of DD motor 58 and have stop in maximum open position, and the deceleration of the DD motor 58 during the 2nd is slowly carried out in permissible acceleration range.And then, in the present embodiment, do not perform and make DD motor 58 temporarily stop such intermittent driving etc., but make DD motor 58 rotating drive according to the velocity mode rotated towards a direction, stop comparing with the situation of the intermittent driving started with adjoint, caloric value significantly reduces.

As mentioned above, by variable speed drives DD motor 58 from 65 ° to 130 °, fitting pin 13 until about main shaft angle than the moment at the uniform velocity driving the situation of DD motor 58 slow (main shaft angle 190 °) during in, mobile in described 2nd interval (between stacking area).Therefore, comparing the state at the uniform velocity driving the situation of DD motor 58 that fitting pin 13 and the 2nd limit yarn 16c are separated maintains longer.Its result, elongated during the position in the described initial stage path of part path maintenance of the 2nd limit yarn 16c, the limit yarn opening formed between the 2nd limit yarn 16c and the 1st limit yarn 16a, 16b maintains the state (forming the state stopped) of maximum open, until about main shaft angle than the moment at the uniform velocity driving the situation of DD motor 58 slow.

(3), during till main shaft angle turns to next 30 ° from 190 °, DD motor 58 turns to next initial point from 130 °.And, in this period, first, DD motor 58 during the 3rd in from the velocity of rotation in the latter stage of (retention period) during the 2nd accelerate, in during the 4th afterwards, with velocity of rotation substantially identical during the 1st, with close to state at the uniform velocity by rotating drive.

Along with the rotation of DD motor 58 from 130 °, fitting pin 13 coordinates with the 2nd limit yarn 16c again, so the 2nd limit yarn 16c is in the state being again engaged pin 13 and lifting from downside, is conjugated upward towards the displacement of the 2nd position P2 by fitting pin 13.In addition, for the acceleration during the 3rd, owing to being also determine in above-mentioned permissible acceleration range as mentioned above, so the caloric value produced along with this acceleration is also permissible in running continuously.

Again, as mentioned above, after the moment that loom wefting insertion terminates is set in the terminal of (retention period) during the 2nd, before wefting insertion finish time, fitting pin 13 coordinates with the 2nd limit yarn 16c and starts the action of closed edge yarn opening, but in the motor pattern of present embodiment, the opening amount that the position of the fitting pin 13 of wefting insertion finish time (main shaft angle 240 °) is decided to be the limit yarn opening formed by it does not cause obstacle to wefting insertion (flight of weft yarn), can not bring impact to wefting insertion.

In addition, do not cause " the opening amount of limit yarn opening " of obstacle of loom wefting insertion finish time is supplying the limit forming apparatus of yarn side and is instead supplying in the limit forming apparatus of yarn side different.In detail, in the present embodiment, be illustrated for the limit forming apparatus 1 of yarn side as described above, in this situation, in the wefting insertion finish time of loom, " the opening amount of limit yarn opening " only otherwise the size contacted with aloft weft yarn.In contrast, when the anti-limit forming apparatus for yarn side, " the opening amount of limit yarn opening " must be arrive the anti-weft yarn for yarn side can enter anti-for the size in the limit yarn opening of yarn side.Therefore, do not cause " the opening amount of limit yarn opening " of obstacle of the wefting insertion finish time of loom supplies the opening amount of yarn side large at the anti-ratio of the opening amount for yarn side.So, in the present embodiment, consider to need the anti-opening amount for yarn side of more big uncork amount to decide described motor pattern in the wefting insertion finish time of loom.Thus, the motor pattern of the limit forming apparatus for yarn side directly can be used as the motor pattern of the anti-limit forming apparatus for yarn side.

As mentioned above, in the present embodiment, by limit yarn shedding motion 3 is set to the structure that (retention period) fitting pin 13 separates with the 2nd limit yarn 16c during the described 2nd, compared with 2nd limit yarn 16c being maintained the structure of the position in initial stage path with the intermittent driving (variable speed drives) by means of only DD motor 58, significantly can alleviate the heating produced by the load of DD motor 58 and the breakage caused along with heating.And, driving control device 140 is with based on described motor pattern, make the mode speed Control DD motor 58 that (retention period) during the described 2nd is elongated, thus the caloric value that DD motor 58 can be produced because of load to suppress in continuous running in permissible scope, extending can during the limit yarn opening of wefting insertion.

Above, an embodiment of the invention are illustrated, but the present invention is not limited in present embodiment, as long as belong to the technology of the present invention scope, various embodiment can also be adopted.Below, other embodiments are described.

In the above-described embodiment, limit forming apparatus forms 3 with 2 the 1st limits yarn 16a, 16b and 1 the 2nd limit yarn 16c to be wound around strand limit, but the radical of limit yarn is not limited in 3.Also can be such as: the 1st limit yarn 16a, 16b is only set to 1, be wound around strand limit with 1 the 1st limit yarn 16a and 1 the 2nd limit yarn 16c 2 of being formed as shown in Figure 11 (a).In this case, limit yarn path switching device 2 also can for only having the structure of 1 limit yarn guiding parts 5.

Again, in the above-described embodiment, when often the rotating a circle of loom main shaft, when often carrying out a wefting insertion, the position of the eyelet 4 of limit yarn path switching device 2 opposite side yarn guiding parts 5 switches, form winding as shown in Figure 11 (a) or Figure 11 (b) and twist limit, but the switching frequency of eyelet 4 position be not limited in each time wefting insertion time.Also can be such as: when loom main shaft often rotates 2 weeks, when often carrying out twice wefting insertion, the position of the eyelet 4 of limit yarn path switching device 2 opposite side yarn guiding parts 5 switches, and forms the winding strand limit as shown in Figure 11 (c).Again, also when the main shaft of loom often rotates more than 3 weeks, can be switched by the position of the eyelet 4 of limit yarn path switching device 2 opposite side yarn guiding parts 5.

Again, be configured in the above-described embodiment: limit yarn guide rod 38a, 38b are erected on the upper surface of base component 37, limit yarn guide rod 38a, 38b are extended towards the top of vertical, and drive unit 8 is located at the below of base component 37, but be not limited in this, also can such as be configured to shown in Figure 12: the limit yarn path switching device 2 in described embodiment is arranged with handstand state, namely, limit yarn guide rod 38a, 38b are extended from the lower surface of base component 37 towards the below of vertical, and drive unit 8 is located at the top of base component 37.In addition, Tu12Zhong, adds the symbol identical with the embodiment shown in Fig. 1-10 at the position corresponding with the structure of the embodiment shown in Fig. 1-10.

In addition, when the structure of this Figure 12, guiding parts 27 is different from the embodiment shown in Fig. 1-10, and it is configured in the top of limit yarn shedding motion 3, and the path eliminating the 2nd limit yarn 16c under fitting pin 13 state is passed through in the vertical direction between described 1st position P1 and the 2nd position P2.

That is, in the example in the figures, contrary with the embodiment shown in Fig. 1-10, under the state being positioned at the upside in the initial stage path of the 2nd limit yarn 16c at the fitting pin 13 of limit yarn shedding motion 3, the opening amount of limit yarn 16 is maximum.Therefore, when this example, the most lifting position of fitting pin 13 on swing-around trajectory is equivalent to the 1st position P1 in the embodiment shown in Fig. 1-10, and most down position is equivalent to the 2nd position P2.Again, when this example, contrary with the embodiment shown in Fig. 1-10, the interval of the downside (anti-guiding parts 27 side) in the initial stage path of the 2nd limit yarn 16c in described swing-around trajectory is set to the 1st interval, the interval of the upside (guiding parts 27 side) in the initial stage path of the 2nd limit yarn 16c is set to the 2nd interval (between stacking area).

And, when this example, contrary with embodiment as Figure 1-10 shows, when the above-below direction component of the revolution motion of fitting pin 13 is ascent direction, 2nd limit yarn 16c follows fitting pin 13 by the tension force of the 2nd limit yarn 16c self and conjugates towards upper direction, further, be indexed to towards upper direction can the position (formation opening) of wefting insertion in the path of the 2nd limit yarn 16c.Again, when the above-below direction component of the revolution motion of fitting pin 13 is descent direction, 2nd limit yarn 16c is engaged pin 13 and presses down from upside, and the path of the 2nd limit yarn 16c is indexed to towards lower direction by the position in the path of changeable 1st limit yarn 16a, the 16b of limit yarn path switching device 2.

But, the bearing of trend of limit yarn guiding parts 5 is not limited in vertical as above, also in the scope that not overslaugh switches the path of the 1st limit yarn 16a, 16b, warp thread direction and woven pieces direction can be set to and the state of vertical angulation (heeling condition).In this case, limit yarn path switching device 2 can be made to arrange with integral inclined state (support unit 6 on warp thread direction and woven pieces direction towards the state that the direction with above-below direction (vertical) angulation tilts), also support unit 6 can be made to remain in vertical, and limit yarn guiding parts 5 is arranged with the state tilted relative to displacement parts 7.

Again, in the embodiment shown in Fig. 1-10, base component 37 as the displacement parts 7 being fixed with limit yarn guiding parts 5 is shaken around the pivot center of vertical, switch the position in the woven pieces direction on limit yarn guiding parts 5 (eyelet 4), but being not limited in this, also can be the structure such as shown in Figure 13-16.Specific as follows.

Example shown in Figure 13 is the position by making displacement parts 7 linearity back and forth movement switch the woven pieces direction of limit yarn guiding parts 5.In addition, in fig. 13, the symbol that additional to the position identical with the structure of the embodiment shown in Fig. 1-10, such as limit yarn shedding motion 3 and shown in Fig. 1-10 embodiment is identical.

Specifically, this limit yarn path switching device 2 possesses actuator 73, channel parts 71 and glide base 72, described actuator 73 is as drive unit 8, described channel parts 71 is as support unit 6, be formed with the groove 70 extended on woven pieces direction, described glide base 72 as displacement parts 7, side-strut yarn guiding parts 5 and be set to conjugate on woven pieces direction in the groove of channel parts 71.Channel parts 71 is fixed with the 1st limit yarn guiding 74.Actuator 73 makes glide base 72 along groove 70 linearity displacement on woven pieces direction of channel parts 71, and the position in the woven pieces direction of the eyelet 4 of limit yarn guiding parts 5 is switched.

In addition, in the example of Figure 13, represent the 1st limit yarn to be 2 (the 1st limit yarn 16a, 16b), i.e. limit yarn guiding parts 5 be the situation situations of strand limits (3 be wound around) of 2, the groove 70 of channel parts 71, glide base 72 and actuator 73 and each limit yarn guiding parts 5 are respectively arranged accordingly 1 right, and when the 1st limit yarn is 1 (2 are wound around the situation of twisting limit), groove 70, glide base 72 and actuator 73 can be respectively 1.Again, in the example in the figures, in order to the path of the 1st limit yarn 16a, 16b being limited in the position from being passed through by the downside of rotatable parts 10, being set to following structure: except the 1st limit yarn guiding 74,67, also the 1st limit yarn guiding 75 being arranged on by the position of the below of rotatable parts 10.

In addition, in the example of Figure 13, possessed balancer 14 by rotatable parts 10, will describe below this balancer 14.

Example shown in Figure 14 to be also the 1st limit yarn the be situation situations of strand limits (2 be wound around) of 1, make displacement parts 7 around pivot center rotating drive toward the direction, switch the position in the woven pieces direction on limit yarn guiding parts 5 (eyelet 4).In addition, in fig. 14, the position identical with the structure of the embodiment shown in Fig. 1-10 is added to the symbol identical with embodiment shown in Fig. 1-10.

Specifically, this limit yarn path switching device 2 possesses servo motor 76, bolster 77 and disk-shaped base parts 78, described servo motor 76 is as drive unit 8, described bolster 77 is as support unit 6, vertical extends and is directly connected with the output shaft of servo motor 76, described disk-shaped base parts 78, as displacement parts 7, to be fixed on bolster 77 and in the position of the center of rotation bias from bolster 77 via bearing 80 side-strut yarn guiding parts 5.Servo motor 76 is built in main body block 81.Again, main body block 81 is fixed with the 1st limit yarn guiding 79.

Servo motor 76 makes disk-shaped base parts 78 rotating drive toward the direction, and limit yarn guiding parts 5 is rotated around the pivot center of bolster 77, switches the position in the woven pieces direction of the eyelet 4 of limit yarn guiding parts 5.In this case, preferably to make the mode of servo motor 76 intermittent rotary control its driving, but also can control its driving to make its mode of rotating continuously.

When intermittent rotary, control the driving of servo motor 76 as follows: in setting 2 specific positions in advance, both sides (longitude yarn row side and anti-longitude yarn row side) in the path of the 2nd limit yarn 16c on woven pieces direction, main shaft often rotates one week, the output shaft (bolster 77) of servo motor 76 is made to rotate half cycle, limit yarn guiding parts 5 is conjugated between described 2 positions, and the regulated period chien shih limit yarn guiding parts 5 in loom main shaft rotates a circle is arranged in 1 position of described 2 positions.In addition, the limit yarn 16c on opportunity the 2nd making limit yarn guiding parts 5 conjugate between described 2 positions is positioned at period above yarn guiding parts 5 upper end, limit in the vertical direction.

On the other hand, when rotating continuously, control the driving of servo motor 76 as follows: the ratio of rotating a week when making the output shaft of servo motor 76 (bolster 77) rotate two weeks with loom main shaft is rotated, limit yarn guiding parts 5 is rotated one week around the axis of bolster 77, and opportunity above making to be positioned at yarn guiding parts 5 upper end, limit in the vertical direction with the 2nd limit yarn 16c the opportunity of crossing the path of the 2nd limit yarn 16c at top, woven pieces direction yarn guiding parts 5 is consistent.

In addition, in this example embodiment, because limit yarn guiding parts 5 is bearing on disk-shaped base parts 78 via bearing 80, so limit yarn guiding parts 5 revolves round the sun while make eyelet 4 all the time towards the mode rotation of warp thread direction by the tension force of the 1st limit yarn 16a with the axis around bolster 77.Thus, prevent along with the revolution of limit yarn guiding parts 5 and cause the 1st limit yarn 16a and limit yarn guiding parts 5 to be wound around (winding).

Again, in the limit forming apparatus 1 of this example, the 1st limit yarn 16 is set to 1, and forms 2 winding strand limits as strand limit, and this formation action is compared with above-mentioned 3 actions being wound around the limit forming apparatus 1 of the embodiment twisting limit, except the action about the 1st limit yarn 16b, other are substantially identical.

Example shown in Figure 15 makes limit yarn guiding parts 5 with the pivot center extended in the warp direction for the shake of shake center, the position in the woven pieces direction of switching limit yarn guiding parts 5 (eyelet 4).In addition, in fig .15, the position identical with the structure of the embodiment shown in Fig. 1-10 is added to the symbol identical with embodiment shown in Fig. 1-10.

Specifically, this limit yarn path switching device 2 has bolster 82, described bolster 82 is as support unit 6, be fixedly arranged in main body bracket 83 with the state extended in the warp direction, joltily can be supported with the cantilevered bar 85 as limit yarn guiding parts 5 at the both ends of bolster 82 respectively.Cantilevered bar 85 has through hole 84 in the centre position of its bearing of trend, and, insert bolster 82 by chimeric in this through hole 84, cantilevered bar 85 can joltily be supported.Be formed with elongated hole 86 in the bottom (with the end being formed with opposition side, eyelet 4 side) of cantilever lever 85, described elongated hole 86 extends and through in a thickness direction on the bearing of trend of cantilever lever 85.Again, main body bracket 83 is fixed with the 1st limit yarn guiding 92.

The drive unit 8 of illustrative example possesses turning cylinder 87, 2 crank disks 88, shake pin 89, pinion 91 and servo motor 90, described turning cylinder 87 is with the state fixed configurations extended in the warp direction, described 2 crank disks 88 are to make the state that its center of rotation is consistent with the axis of turning cylinder 87 not integrally mounted rotatably with the both ends of turning cylinder 87 respectively, described shake pin 89 is arranged on relative to the position of each crank disk 88 from center of rotation bias, described pinion 91 and the gears meshing be formed on the periphery of (upstream side in illustrative example) in 2 crank disks 88, the output shaft of described servo motor 90 is provided with pinion 91.And drive unit 8 is connected with cantilever lever 85 by being inserted in the elongated hole 86 of cantilever lever 85 by shake pin 89.Therefore, cantilever lever 85 (particularly the lower portion of through hole 84), crank disk 88 and shake pin 89 form crank mechanism.

Along with being made each crank disk 88 rotating drive by servo motor 90, shake pin 89 conjugates on woven pieces direction, makes cantilever lever 85 drive for shake center comes and goes shake with bolster 82 thus.Its result, the part of the top side of ratio bolster 82 of cantilever lever 85 conjugates about bolster 82 symmetrically with shake pin 89, and the position of eyelet 4 conjugates on woven pieces direction.In addition, because cantilever lever 85 is connected via elongated hole 86 with shake pin 89, thus shake pin 89 along with above-mentioned rotating drive, displacement in the vertical direction can not have influence on cantilever lever 85.

In addition, when the example of Figure 15, the bolster 82 of joltily supporting extension arms bar 85 can be equivalent to support unit 6, the part comparing the top side of bolster 82 of cantilever lever 85 is equivalent to limit yarn guiding parts 5, and the lower end side part comprising the part that support shaft 82 supports of cantilever lever 85 is equivalent to conjugate parts 7.That is, in the example in the figures, limit yarn guiding parts 5 and displacement parts 7 form one as cantilever lever 85.But, also can be following structure: the part being equivalent to conjugate parts 7 of cantilever lever 85 is formed as separating with the part being equivalent to limit yarn guiding parts 5, and cantilever 85 is fixed on the displacement parts 7 of separated formation.

Example shown in Figure 16 is identical with the example of Figure 15, and limit yarn guiding parts 5 is shaken centered by the bolster extended in the warp direction, and Direct driver bolster rotates.In addition, in figure 16, the symbol identical with the embodiment shown in Figure 15 is added at the position identical with the structure of the embodiment shown in Figure 15.

Specifically, in this limit yarn path switching device 2, drive unit 8 possesses 2 servo motors 94, described 2 servo motors 94 are arranged accordingly with the cantilever lever 93 as limit yarn guiding parts 5 respectively, and the form that each servo motor 94 extends in the warp direction with the pivot center of its output shaft 94a is fixedly arranged in main body block 95.Again, the output shaft 94a of each servo motor 94 is provided with driver plate 96, and then, this driver plate 96 is equipped with cantilever lever 93.In addition, main body block 95 is fixed with the 1st limit yarn guiding 97.

Therefore, by being made driver plate 96 periodically (intermittence) round rotation by each servo motor 94, cantilever lever 93 is driven by round shake, and the position of the eyelet 4 of each cantilever lever 93 is periodically switched between the longitude yarn row side and these two positions, anti-longitude yarn row side in woven pieces direction relative to the 2nd limit yarn 16c.In addition, in this case, the output shaft 94a of each servo motor 94 is equivalent to support unit 6, and driver plate 96 is equivalent to conjugate parts 7.

Again, in the embodiment shown in Fig. 1-10, limit yarn path switching device 2 makes the path of the 1st limit yarn (the 1st limit yarn 16a, 16b) fix in the vertical direction, but is not limited in this, also can be the structure such as shown in Figure 17.Specific as follows.

In example shown in Figure 17, limit yarn path switching device 2 except make the path of the 1st limit yarn (the 1st limit yarn 16a) relative to the 2nd limit yarn (the 2nd limit yarn 16c) between the longitude yarn row side and these 2 positions, anti-longitude yarn row side in woven pieces direction periodically switch except, also conjugate in the vertical direction and form limit yarn opening.In addition, Tu17Zhong, adds the symbol identical with the embodiment shown in Fig. 1-10 at the position identical with the structure of the embodiment shown in Fig. 1-10.

Specifically, in the limit yarn path switching device 2 of illustrative example, main body block 151 is fixed on axis of rocking 150, described main body block 151 supports not shown drive unit 8, described drive unit 8 drives limit yarn guide rod 38a to shake around the axle center of bolster 36, and the axle center of described axis of rocking 150 extends on woven pieces direction.Axis of rocking 150 is connected with drive unit 152, described drive unit 152 is compared main body block 151 and is fixedly arranged on anti-longitude yarn row side on woven pieces direction, drive unit 152, by making main body block 151 with the axle center of axis of rocking 150 for center of rotation periodically (intermittence) back and forth movement, makes limit yarn guide rod 38a swing movement up and down.

And, in the example in the figures, by limit yarn path switching device 2 and limit yarn shedding motion 3, the path of the 1st limit yarn 16a is conjugated together with the path of the 2nd limit yarn 16c in the vertical direction, form the 1st limit yarn opening and the 2nd limit yarn opening, in described 1st limit yarn opening, the 1st limit yarn 16a is upper yarn, the 2nd limit yarn 16c is lower yarn, and in described 2nd limit yarn opening, the 1st limit yarn 16a is lower yarn, the 2nd limit yarn 16c is upper yarn.

Namely, the limit forming apparatus 1 of the example of Figure 17 is as follows: limit yarn guide rod 38a is upwards shaken, fitting pin 13 is made to be indexed to the 2nd interval (between stacking area) of swing-around trajectory and to form the 1st limit yarn opening, after wefting insertion to the 1st opening, limit yarn guide rod 38a is shaken downwards, fitting pin 13 is made to form the 2nd limit yarn opening towards the 2nd position P2 displacement of swing-around trajectory, and then, 2nd aperture position switches limit yarn guide rod 38a (eyelet 4) position on woven pieces direction by limit yarn path switching device 2, the path of the 1st limit yarn 16a is changed on woven pieces direction, afterwards, wefting insertion is to the 2nd opening, afterwards, further by the position of limit yarn path switching device 2 on the woven pieces direction on the switching limit, position yarn guide rod 38a (eyelet 4) of the 2nd opening, afterwards, limit yarn guide rod 38a is upwards shaken, fitting pin 13 is made to be indexed to the 2nd interval (between stacking area) of swing-around trajectory and to form the 1st limit yarn opening.By repeatedly carrying out above action, the limit forming apparatus 1 of illustrative example forms the winding strand limit as shown in Figure 11 (d).

In addition, in the example of Figure 17, when formation the 2nd limit yarn opening, 2nd limit yarn 16c and fitting pin 13 not separated, do not form stop at limit yarn opening under such circumstances, so in order to can at the opportunity wefting insertion identical with the 1st limit yarn opening, being extended by the speed Control of the drive unit 11 of limit yarn shedding motion 3 can during the limit yarn opening of wefting insertion, that is, be necessary to make drive unit 11 carry out speed Control with larger acceleration and deceleration.But, when formation the 1st limit yarn opening, formed at limit yarn opening because the 2nd limit yarn 16c separates with fitting pin 13 and stop, so identical with the embodiment shown in Fig. 1-10, carrying out without the need to making drive unit 11 that larger acceleration and deceleration just can extend can during the limit yarn opening of wefting insertion.Therefore, in the example of Figure 17, when limit yarn opening formed stop, drive unit 11 must be made to carry out larger acceleration and deceleration during each opening at formation the 1st, the 2nd limit yarn compared to existing technology, the breakage caused due to the load of drive unit 11 and heating can be reduced.

For limit yarn shedding motion 3, in the embodiment shown in Fig. 1-10, being made up of rolling disc 61 and support column 63 by the main part 12 of rotatable parts 10 of limit yarn shedding motion 3, described rolling disc 61 is the lamellar parts being formed as disc-shape, described support column 63 is arranged on rolling disc 61, but, this is not limited in by the structure of rotatable parts 10, also can be such as: in the embodiment shown in Fig. 1-10, omit support column 63, fitting pin 13 is arranged on rolling disc 61, or, can also be the structure as shown in Figure 18,19.

Specifically, example as shown in figure 18, main part 12 also can omit the parts of the disc-shape in the embodiment shown in Fig. 1-10, is only made up of the pillar 99 on the output shaft not being arranged on the servo motor 98 arranged as drive unit 11 rotatably.In addition, Tu18Zhong, adds and identical symbol in the embodiment shown in Fig. 1-10 at the position identical with the structure of the embodiment shown in Fig. 1-10.

Again, example as shown in figure 19, main part 12 also can be the tape member 103 be erected between driving pulley 101 and driven pulley 102, described driving pulley 101 is arranged on the driving shaft 100 of not shown drive unit 11, and described driven pulley 102 has the pivot center parallel with driving shaft 100.In addition, Tu19Zhong, adds and identical symbol in the embodiment shown in Figure 18 at the position identical with the structure of the embodiment shown in Figure 18.

And in this example embodiment, driving pulley 101 and driven pulley 102 are arranged on scaffold 32 in the vertical and mode parallel with warp thread direction of above-below direction with the track being erected at the tape member 103 on both.Again, in this example embodiment, component 9 is identical with the embodiment shown in Fig. 1-10 to be made up of fitting pin 13, fitting pin 13 to be fixed on the outer peripheral face of tape member 103 towards the state of the axis of driving shaft 100 with making its axis being parallel, and the state that its part is projected upwards from tape member 103 in woven pieces side is arranged.Therefore, in the structure shown here, rotating drive driving pulley 101 and described tape member 103 is rotated toward the direction, the swing-around trajectory that fitting pin 13 is specified in the periphery by tape member 103 conjugates, and coordinates with the 2nd limit yarn 16c and the path of the 2nd limit yarn 16c is conjugated in the vertical direction.

And then, in this example embodiment, be set to by the tape member 103 in rotatable parts 10: Long Circle its spacing line being set to above-below direction, on this basis, at the center (centre position) of the described spaced lines of warp thread direction, shorter than the distance from described center to the lower position of described spaced lines from the distance of spaced lines center (centre position) M in the vertical direction to the initial stage path of the 2nd limit yarn 16c.Again, the center of the swing-around trajectory of the fitting pin 13 specified by the periphery of tape member 103 is consistent with the center of the spaced lines of tape member 103.Therefore, shorter than the distance the most down position from the center of this swing-around trajectory to swing-around trajectory from distance to the initial stage path of the 2nd limit yarn 16c of the center of the swing-around trajectory of fitting pin 13, at least at this most down position, fitting pin 13 and the 2nd limit yarn 16c decilitre.

In addition, as mentioned above, balancer 14 as shown in fig. 13 that can also be possessed by rotatable parts 10.In the example of Figure 13, possessed balancer 14 by rotatable parts 10 in the position relative to its turning cylinder and fitting pin 13 symmetry.This balancer 14 is made up of equlizing support 64 and balancing plug 65, described equlizing support 64 is arranged on the face of longitude yarn row side of rolling disc 61, and described balancing plug 65 is arranged on the position of anti-longitude yarn row side via the expanded range that equlizing support 64 compares fitting pin 13 on woven pieces direction.

Equlizing support 64 is plate-shaped members that quality is substantially identical with support column 63 with shape.Again, balancing plug 65 is round bar-like members that quality is substantially identical with shape and fitting pin 13.Balancing plug 65 is configured in the position with fitting pin 13 symmetry relative to the center (pivot center of DD motor) of rolling disc 61.

And, by possessing such balancer 14, the vibromotive force produced around pivot axis due to fitting pin 13 can be made to be offset by the vibromotive force produced around pivot axis due to balancer 14, and can suppress to be produced vibration by rotatable parts 10.Thereby, it is possible to alleviate owing to acting on vibration on the drive unit (DD motor) driving rolling disc 61 and the load that produces, drive unit can make by rotatable parts 10 high speed rotating, therefore, can tackle loom more at a high speed.

In the embodiment shown in Fig. 1-10, have employed cross section be circular fitting pin 13 as component 9, but the cross sectional shape of fitting pin is not limited in circle, also can be that the cross sectional shape such as shown in Figure 20 is flat.In addition, the limit forming apparatus 1 of Figure 20 is except component 9, there is the structure substantially identical with the embodiment shown in Fig. 1-10, Tu20Zhong, add and identical symbol in the embodiment shown in Fig. 1-10 at the position identical with the structure of the embodiment shown in Fig. 1-10.

And, be that flat fitting pin 126 is as component 9 by adopting the cross sectional shape shown in Figure 20, till the moment arriving the 2nd position P2 from the rotational angle before the 2nd position P2 along with the component 9 conjugated on swing-around trajectory by the rotation of rotatable parts 10, the path of the 2nd limit yarn 16c can be maintained the position being roughly and rising most, at the 2nd position P2, during the position that can set the 2nd limit yarn 16c does not in the vertical direction change (stop), the path of the 1st limit yarn 16a, 16b can be made to switch and to become more easy.

In addition, for as above for component 9 is rotated on swing-around trajectory by the rotation of rotatable parts 10, in the embodiment shown in Fig. 1-10, make by rotatable parts 10 around the pivot axis extended in parallel relative to woven pieces direction, but be not limited in this, also can bring in the scope of obstacle not giving the path displacement in the vertical direction of the 2nd limit yarn 16c, make by rotatable parts 10 around from woven pieces direction in the pivot axis of the state of above-below direction and warp thread direction surface thereof.

Again, in the embodiment shown in Fig. 1-10, the DD motor 58 making to be set to gerotor type by the drive unit 11 that rotatable parts 10 rotate will be used for, but be not limited in this, also such as external tooth wheel-type DD motor can be set to, DD motor can also be replaced with CD-ROM drive motors such as servo motor or stepper motors (impulse motor), and be directly installed on by rotatable parts 10 on the turning cylinder of this CD-ROM drive motor.Again, motor also can being made to be connected with the drive transmission mechanism of belt wheel via comprising band with by rotatable parts 10, to replace directly being had an effect to by rotatable parts 10 by DD motor or above-mentioned CD-ROM drive motor.That is, drive unit 11 also can be made up of above-mentioned CD-ROM drive motor and drive transmission mechanism.

Again, in the embodiment shown in Fig. 1-10, a part for limit yarn shedding motion 3 (by rotatable parts 10) is configured to the existence range being positioned at heald frame 28a, but limit yarn shedding motion 3 (by rotatable parts 10) might not be configured in the existence range of heald frame 28a.Also can being such as: when the opening amount of the limit yarn opening needed for wefting insertion has more than needed, not bringing in the scope of obstacle to wefting insertion, the position of the upstream side of heald frame 28a will being configured in the warp direction by rotatable parts 10.Again, when the rotation frequency of spindle of the loom in weaving is lower, the DD motor 58 of limit yarn shedding motion 3 and also can be lower by the speed of rotatable parts 10, so the load be applied on drive unit 11 also diminishes due to DD motor 58 with by the inertia of rotatable parts 10.Therefore, under these circumstances, also can not hinder due to above-mentioned inertia to drive unit 11 apply load scope in, make become large by the diameter of rotatable parts 10 and the diameter of the swing-around trajectory of component 9 is increased, and the addendum modification of the above-below direction of the 2nd limit yarn 16c is increased, on this basis, the position of the upstream side of the heald frame 28a of warp thread direction will be configured in by rotatable parts 10, maintain the opening amount of the limit yarn 16 needed for wefting insertion.

And then, in the embodiment shown in Fig. 1-10, in order to prevent producing vibration along with being caused the path of the 2nd limit yarn 16c to compare limit yarn shedding motion 3 in fell 24 side by the rotation of rotatable parts 10 on woven pieces direction, position between limit yarn shedding motion 3 in the warp direction and limit yarn path switching device 2 arranges limiting part 15, but also can omit this limiting part 15.In addition, in this case, be preferably as follows structure: to make the mode of the plane of the swing-around trajectory comprising component 9 and the path parallel from the 2nd limit yarn 16c of guiding parts 27 to fell 24, that is, to make the path of the 2nd limit yarn 16c mode orthogonal with by the turning cylinder of rotatable parts 10 arrange limit yarn shedding motion 3.Wherein, according to the configuration of limit yarn shedding motion 3 with when being made above-mentioned vibration in the situation of permissible degree by the size etc. of the swing-around trajectory of rotatable parts 10 and make limit yarn path switching device 2 can tackle above-mentioned vibration, also can only omit limiting part 15.

Again, for the limit forming apparatus 1 for yarn side, in the embodiment shown in Fig. 1-10, limit forming apparatus 1 viewed from the longitude yarn row side in woven pieces direction, makes to be rotated by rotatable parts 10 clockwise, but also can make to be rotated by rotatable parts 10 inverse clock.

In addition, when making to be rotated by rotatable parts 10 inverse clock described above, in the structure possessing the embodiment shown in Fig. 1-10 of limiting part 15, with make, by compared with rotatable parts 10 situation that as mentioned above clockwise rotates, following effect can be obtained: elongated during the opening needed for formation wefting insertion can be made.In detail as follows.Wherein, in the following description, with from the plumb line passed through by the center of rotation of rotatable parts 10 for the swing-around trajectory that fitting pin 13 conjugates is divided into upstream side and downstream by border, the upstream side in this situation is set to the swing-around trajectory of upstream side and swing-around trajectory downstream being set to downstream is described.

When the downstream of the limit yarn shedding motion 3 of embodiment is as Figure 1-10 shows provided with limiting part 15, the 2nd limit yarn 16c in the position of limiting part 15 on woven pieces direction towards longitude yarn row lateral bend, and to guide towards fell 24.In this case, when the 2nd limit yarn 16c moves up and down, to the 2nd limit yarn 16c effect with and limiting part 15 sliding and the frictional resistance that produces.

When component 9 rotates from the 2nd position P2 towards the 1st position P1, rotated by rotatable parts 10 inverse clock described above if make, then component 9 conjugates on the swing-around trajectory in downstream.On the other hand, rotated by rotatable parts 10 clockwise described above if make, then component 9 conjugates on the swing-around trajectory of upstream side.Therefore, when making to be rotated by the situation of rotatable parts 10 inverse clock rotation described above and clockwise described above, when component 9 in distance between component 9 and limiting part 15, i.e. the 2nd limit yarn 16c and the path between limiting part 15 are the former, to compare component 9 short state when the 2nd position P2, the 2nd limit yarn 16c is conjugated downward, relative to this, when above-mentioned path is the latter, in the state of the 2nd position P2 duration, the 2nd limit yarn 16c is conjugated downward to compare component 9.

Therefore, when making to be rotated by rotatable parts 10 inverse clock described above, compared with the situation of rotating with clockwise described above, because described path is short, the part path of the 2nd limit yarn 16c is in the state be not easily wound around, even if with the sliding of the limiting part 15 and frictional resistance that produces acts on the 2nd limit yarn 16c, relative to the above-mentioned displacement of component 9, the 2nd limit yarn 16c still has higher tracing ability and conjugates towards below.Its result, when making that as mentioned above inverse clock rotates by rotatable parts 10, relative to component 9 displacement and be rapidly formed limit yarn opening.

When component 9 rotates from the 1st position P1 towards the 2nd position P2, rotated by rotatable parts 10 inverse clock described above if make, then component 9 conjugates on the swing-around trajectory of upstream side.On the other hand, rotated by rotatable parts 10 clockwise described above if make, then component 9 conjugates on the swing-around trajectory in downstream.Therefore, when making to be rotated by the situation of rotatable parts 10 inverse clock rotation described above and clockwise described above, when path between the component 9 in the 2nd limit yarn 16c and limiting part 15 is for the former, in the state of the 1st position P1 duration, the 2nd limit yarn 16c is conjugated upward to compare component 9, relative to this, when above-mentioned path is the latter, to compare short state when component 9 is positioned at the 1st position P1, the 2nd limit yarn 16c is conjugated upward.

Therefore, when making to be rotated by rotatable parts 10 inverse clock described above, compared with the situation of rotating with clockwise described above, because described path is long, so the part path of the 2nd limit yarn 16c is in the state be easily wound around, with with under the sliding of limiting part 15 and state that the frictional resistance that produces acts on the 2nd limit yarn 16c, 2nd limit yarn 16c reduces relative to the tracing ability of the displacement of component 9, relative to the displacement of component 9, the 2nd limit yarn 16c occurs postponing towards the displacement of top.Its result, when making to be rotated by rotatable parts 10 inverse clock described above, relative to the displacement of component 9, postponing appears in the action of closed edge yarn opening.

Like this, when limit forming apparatus 1 possesses limiting part 15, when making to be rotated by rotatable parts 10 inverse clock described above, relative to component 9 displacement and promptly form limit yarn opening, and due to closed edge yarn opening action occur postpone, so following effect can be obtained: the situation comparing above-mentioned clockwise, can make between the Formation period of the limit yarn opening needed for wefting insertion elongated.

Wherein, embodiment as Figure 1-10 shows, when making that as mentioned above clockwise rotates by rotatable parts 10, and make, by compared with rotatable parts 10 situation that inverse clock rotates as mentioned above, following effect can be obtained: the switching time that the path of the 1st limit yarn 16a, 16b can be done sth. in advance.In detail as follows.

When making to be rotated by rotatable parts 10 clockwise described above, the fitting pin 13 rotated from the 1st position P1 towards the 2nd position P2 is being conjugated upward by the rotation track in the downstream of the pivot center of rotatable parts 10.That is, the component 9 in the 2nd limit yarn 16c and the path between limiting part 15 shorten, and the part path of the 2nd limit yarn 16c is in the state be not easily wound around, and the 2nd limit yarn 16c conjugates with the state that the tracing ability of the displacement relative to fitting pin 13 is high.

Therefore, the state of the below of yarn guiding parts 5 upper end, limit is positioned at the height and position of the part path of the 2nd limit yarn 16c of the position of limit yarn guiding parts 5 in the warp direction, limit yarn path switching device 2 starts to switch the 1st limit yarn 16a, the path of 16b, even if limit yarn guiding parts the 5 and the 2nd limit yarn 16c interferes, because the part path of the 2nd limit yarn 16c is in the state be not easily wound around, so, with with the interference of limit yarn guiding parts 5 and the frictional resistance that produces with bendingly make the 2nd limit yarn 16c not easily be locked, the 2nd limit yarn 16c can be forcibly made to separate towards top between limit yarn guiding parts 5.Therefore, done sth. in advance the switching time in the path of the 1st limit yarn 16a, 16b, loom more at a high speed can have been tackled.

In addition, about the not shown anti-limit forming apparatus for yarn side, identical with for yarn side, also can make to be rotated by rotatable parts clockwise or inverse clock.Wherein, anti-in the limit forming apparatus 1 of yarn side, for by the rotation direction of rotatable parts 10 and the relation forming mouth-opening action and action of remaining silent, supply " clockwise " during the limit forming apparatus 1 of yarn side to change into " inverse clock " above-mentioned explanation, " inverse clock " is changed into " clockwise ".

Then, the variation of the relative motion pattern of component 9 is described.

(1) when making to be rotated by rotatable parts 10 inverse clock, as shown in figure 23, if rotational angle during centre position between the 2nd position P2 of fitting pin 13 in rotation direction and the 1st position P2 is set to origin position (0 ° of position), namely, if the centre position of center on the track of fell side comparing swing-around trajectory is set as the origin position of DD motor 58, then according to the relation in the initial stage path with the 2nd limit yarn 16c, the rotational angle of the DD motor 58 when fitting pin 13 arrives the start position in described 2nd interval (between stacking area) and Fig. 9, embodiment shown in 10 is different, become and compare Fig. 9, the rotational angle (specifically 50 °) of 65 ° in the embodiment shown in 10 little.Again, the rotational angle of the DD motor 58 when fitting pin 13 arrives described 2nd interval (between stacking area) terminal is also than the situation (130 °) little (specifically 115 °) of the embodiment shown in Fig. 9,10.So, when making to be rotated by rotatable parts 10 (DD motor 58) inverse clock, as motor pattern of making decision.

A) when by identical for the embodiment shown in the origin position of DD motor 58 with Fig. 9,10 be set to the centre position of fitting pin 13 between the 2nd position P2 and the 1st position P1 time rotational angle, consider as follows.

A main shaft angle that DD motor 58 is in the loom of origin position by () is set in the moment that the main shaft angle identical with the embodiment shown in Fig. 9 of described clockwise, 10 is 30 °.In this case, due to fitting pin 13 arrive the rotational angle of DD motor 58 from origin position (amount of spin) till the starting point in the 2nd interval (between stacking area) than described clockwise Fig. 9,10 shown in embodiment in little, so the motor pattern (velocity of rotation of DD motor 58) during by the 1st is set to substantially at the uniform velocity, the 1st rotational angle must become the moment more Zao than the embodiment shown in Fig. 9,10 identically with the embodiment shown in Fig. 9,10.Therefore, the 1st rotational angle can determine in the moment (relative to the moment as far as possible more early wefting insertion start time) more early by motor pattern.

In addition, in this case, when the 1st rotational angle is more Zao than wefting insertion start time, also the velocity of rotation of the DD motor 58 during the 1st can be set to slower than above-mentioned.Namely, before the wefting insertion time started, fitting pin 13 arrives the starting point (starting to form the state stopped) in the 2nd interval (between stacking area) and the relation property of there is no need of wefting insertion, so in this case, in order to the load alleviating DD motor 58 needs the velocity of rotation that slows down.Again, in this case, replace and make the velocity of rotation of DD motor 58 slow to state close at the uniform velocity, as motor pattern variation as described later, also can set between deceleration period the latter stage during the 1st.

B DD motor 58 is in the loom main shaft angle initialization of origin position when slower than the main shaft angle (30 °) of the embodiment shown in Fig. 9,10 when by ().In above-mentioned (a), the rotational angle of the DD motor 58 in during the 1st diminishes, the velocity of rotation during the 1st is correspondingly made to slow down, or the latter stage during the 1st set between deceleration period, but also can change into DD motor 58 is in origin position loom main shaft angle initialization when slower than the embodiment shown in Fig. 9,10 when.Specifically, as shown in figure 24, when the 1st rotational angle being set to the situation of 85 ° identical with the embodiment shown in Fig. 9 of above-mentioned clockwise, 10 and the velocity of rotation of DD motor 58 being set to identical with the embodiment shown in Fig. 9 of above-mentioned clockwise, 10, main shaft angle DD motor 58 being in the loom of origin position is set as the main shaft angle of about 42 ° that the moment of main shaft angle is slower than the main shaft angle 30 ° of the embodiment shown in Fig. 9,10.Again, in this case, main shaft angle DD motor 58 being in the loom of origin position is set as the main shaft angle between 30 ° ~ about 42 °, replace the main shaft angle of about 42 °, on this basis, can make the velocity of rotation of the DD motor 58 in during the 1st as described in above-mentioned (a), the velocity of rotation of the DD motor 58 that slows down, or set between deceleration period the latter stage during the 1st.

B) replace above-mentioned A) described centre position, the origin position of DD motor 58 is set to make fitting pin 13 in the centre position compared between the 2nd position P2 and the 1st position P1 more by the 2nd P2 side, position time rotational angle.

Specifically, as shown in figure 25, identically with the embodiment shown in Fig. 9,10 to set the initial point phase place of DD motor 58 at DD motor 85 from the mode that the moment that initial point rotates 65 ° makes fitting pin arrive the starting point in the 2nd interval, in other words, if the amount of spin of the DD motor of the fitting pin 13 in inverse clock situation from described centre position to the starting point in the 2nd interval is set to 50 ° described above, then the origin position of DD motor 58 is made to compare rotational angle only 15 ° that described centre position is set in the 2nd P2 side, position, that use DD motor.Therefore, when re-start as mentioned above setting origin position, what the 1st, the 2nd rotational angle can be set as with the embodiment shown in Fig. 9 of clockwise, 10 is substantially identical.In addition, in this case, the main shaft angle that fitting pin 13 is in the 2nd position P2 of swing-around trajectory is slower than the embodiment shown in Figure 24 because of the setting of above-mentioned initial point, but the difference of this main shaft angle does not affect restraining of limit yarn 16 pairs of weft yarns and limit yarn path switching device 2 to the switching in the path of the 1st limit yarn 16a, 16b.

(2) also the motor pattern of the DD motor 58 of limit forming apparatus 1 can be made with anti-different for yarn side for yarn side.In the embodiment shown in Fig. 9,10, the motor pattern of variable speed drives DD motor 58 is used for and supplies the limit forming apparatus of yarn side and the anti-limit forming apparatus for yarn side, but also can change consideration is respective determines to be different from the relation of wefting insertion by both motor patterns into.Specifically, when using the limit forming apparatus for yarn side, according to the relation with wefting insertion, for the terminal (the 2nd rotational angle) in the 2nd interval (between stacking area), do not need as the anti-limit yarn opening amount for wefting insertion supplied yarn side, only consider with the interference of the weft yarn passed through in the yarn opening of limit, therefore, also the 2nd rotational angle can be set as the moment (main shaft angle) before the embodiment shown in Fig. 9,10.Again, when using the anti-limit forming apparatus for yarn side, according to the relation with wefting insertion, for the starting point (the 1st rotational angle) in the 2nd interval (between stacking area), when the main shaft angle of the such as embodiment shown in Fig. 9,10 is 85 °, weft yarn does not arrive anti-for yarn side, do not need the limit yarn opening amount for wefting insertion as yarn side, therefore, also the 1st rotational angle can be set to the moment (main shaft angle) after the embodiment shown in Fig. 9,10.

(3) velocity of rotation (velocity mode) of each period (during the 1st ~ 3rd) also can be set to the velocity mode different from the example shown in Fig. 9.

A) for during the 1st

During the 1st, in the example shown in Fig. 9, the motor pattern of variable speed drives DD motor 58 is set to and does not slow down during the 1st, but be not limited in this, also can such as: the A when as above-mentioned (1)) during the 1st in the rotational angle of DD motor 58 situation fewer than the embodiment shown in Fig. 1-10 or when the 1st rotational angle being set to the moment after the embodiment shown in Fig. 9,10 as the anti-situation for yarn side of above-mentioned (2), between the deceleration period that also can set velocity of rotation the latter stage during the 1st.

B) for during the 2nd

As above-mentioned A) latter stage during the 1st set velocity of rotation deceleration period between, slow than the embodiment shown in Fig. 9,10 of the velocity of rotation of the terminal (the 1st rotational angle) during the 1st.So, for the velocity mode of (retention period) during the 2nd, can change as follows.

The velocity of rotation of (a) terminal during the 1st (the 1st rotational angle) identically with the embodiment shown in Fig. 9,10 than the 2nd during (retention period) the fireballing situation of described average rotation under, identical with the embodiment shown in Fig. 9,10, be set to the mid-term of during the 2nd (retention period) with the velocity mode slowed down.Wherein, in this case, along with the deceleration in latter stage during the 1st, due to slow than the embodiment shown in Fig. 9,10 of the velocity of rotation of the DD motor 58 of the 1st rotational angle, so it is slow the velocity of rotation at (retention period) initial stage during the 2nd can be set as than the embodiment shown in Fig. 9,10, thereby, it is possible to make the described degree of deceleration in mid-term relax than the embodiment shown in Fig. 9,10, and it is short to make than the embodiment shown in Fig. 9,10 between this deceleration period.

B situation that () makes the velocity of rotation of terminal during the 1st can be decelerated to the average rotation speed of (retention period) during the 2nd in permissible acceleration range, namely, during 1st, the velocity of rotation of terminal is with when during the 2nd, the average rotation speed of (retention period) is substantially identical, can be set to the velocity mode at the uniform velocity not carrying out in (retention period) slowing down during the 2nd.In addition, in this case, during the 2nd the DD motor 58 in (retention period) latter stage velocity of rotation ( average rotation speed) slightly faster than the embodiment shown in Fig. 9,10.Therefore, for the acceleration during the 3rd, can, based on the velocity of rotation in (retention period) latter stage during the 2nd, make it than the mitigation of the embodiment shown in Fig. 9,10.

(c) slow-footed situation of average rotation of (retention period) during making the velocity of rotation of terminal during the 1st can be decelerated to than the 2nd in permissible acceleration range, namely, during 1st the velocity of rotation of terminal than the 2nd during (retention period) the slow-footed situation of average rotation under, to be set to during the 2nd (such as: latter stage) in (retention period) and to set the velocity mode between accelerated period.Specifically, as long as following velocity mode: the speed that the velocity of rotation of terminal is substantially identical during the initial stage said from the embodiment shown in Fig. 9,10 is set as with the 1st to mid-term, and accelerate in latter stage.In addition, also identical with above-mentioned (b) in this case, for the acceleration during the 3rd, its degree can be made than the more mitigation of the embodiment shown in Fig. 9,10.Again, during the 2nd, the latter stage of (retention period) can accelerate to the velocity of rotation during the 4th in permissible acceleration range, also can remove as and then during the 2nd (retention period) accelerated period between the 3rd during, and the 2nd rotational angle is set to the moment more late than the embodiment shown in Fig. 9,10.Thereby, it is possible to by formed stop the 2nd during (retention period) be set to longer than the embodiment shown in Fig. 9,10 during.Wherein, when as above-mentioned (2) for yarn side situation without the need to the 2nd rotational angle is set to the late moment, also the velocity of rotation during the 4th can be set to the velocity of rotation slower than the embodiment shown in Fig. 9,10.

D () in addition, in the embodiment shown in Fig. 9,10, is set to the velocity mode during the 2nd, DD motor 58 being rotated continuously, but is not limited in this.Loom main shaft speed such as in can making to weave comparatively slow and by the 2nd during mid-term deceleration and the 3rd during acceleration when being located in permissible acceleration range, also can latter stage during the 2nd, make the rotation of DD motor 58 stop (intermittent driving).And then, also can latter stage DD motor be stopped during the 2nd, and this halted state is maintained to loom main shaft rotate next time in till identical rotational angle, in the whole period keeping limit yarn open state to make main shaft rotate a circle, the action of limit forming apparatus 1 is made to stop (intermittent driving).Such as: when pile fabric loom etc. forms napping, by making limit forming apparatus 1 stop with the state of such as above-mentioned maintenance limit yarn opening, can avoid thus forming napping on strand limit.

(3) in the embodiment shown in Fig. 1-10, driving control device 140 variable speed drives DD motor 58, but be not limited in this, also can at the uniform velocity drive DD motor 58.Such as: when the loom main shaft speed in weaving is compared with low velocity, due to the load that produces by the inertia of rotatable parts 10 and DD motor 58 itself little, so can swing-around trajectory be increased, make the arc length in the 2nd interval (between stacking area) larger.Therefore, in this case, the long retention period can be realized, so driving control device 140 also can be made at the uniform velocity to drive DD motor 58 with mechanicalness structure.Concrete structure is as follows.

In the example of Figure 22, make from by the distance of the center of rotatable parts 10 to fitting pin 13 the size larger than the embodiment shown in Fig. 1-10 by forming, and the position center of swing-around trajectory is set in below than the embodiment shown in Fig. 1-10, compare the embodiment shown in Fig. 1-10, the 2nd interval (between stacking area) that fitting pin 13 and the 2nd limit yarn 16c are separated increases.

And then, in the example in the figures, the initial point of DD motor 58 is set in the moment (main shaft angle is 60 °) that the embodiment shown in ratio Fig. 1-10 in the scope not hindering the limit yarn opening amount of the wefting insertion start time of loom is slow, becomes the opening amount do not interfered with the weft yarn of flight in the wefting insertion finish time of loom thus.In the example in the figures, according to said structure, during driving control device 140 at the uniform velocity drives DD motor 58 and obtains the 2nd of hope (retention period), and in wefting insertion start time and finish time, the limit yarn opening amount for yarn side is made not hinder the wefting insertion of loom.In addition, DD motor can suitably change as required relative to the setting of the initial point of the main shaft angle of loom.

In the embodiment shown in Fig. 1-10, driving control device 140 possesses feedback circuit as circuit structure (closed control circuit), velocity feedback circuits and current feedback circuit, described feedback circuit is used for (time per unit) umber of pulse detected by the encoder that is arranged in DD motor 58 as in the comparing section 143a of position feed back signal Pf input position control circuit 143, described velocity feedback circuits is used for position feed back signal Pf to change (differential) into feedback speed signal Sf and input in the comparing section 145a of speed control circuit 145, described current feedback circuit is used for the detected value I input current amplifier 147c of the electric current supplied to DD motor 58, but be not limited in this.

Also can as following circuit structure (closed control circuit), such as: adopt the stepper motor (impulse motor) without the need to feedback to replace DD motor 58, and driving control device 140 does not possess above-mentioned feedback circuit.In addition, in the embodiment shown in Fig. 1-10, driving control device 140 possesses for the setting apparatus 144 of input motion pattern and the structure of memory 142 for storing, with variable speed drives DD motor 58, but be not limited in this, can be following structure, such as: when at the uniform velocity driving DD motor 58, driving control device 140 possess setting apparatus for setting motor pattern and memory yet.Again, also can in the control device 146 of loom storing moving pattern, make the position command generating unit 141 of the driving control device 140 of limit forming apparatus 1 with reference to the above-mentioned motor pattern be stored in the control device 146 of loom.

In addition, in the embodiment shown in Fig. 1-10, to weave one piece of loom of weaving cotton cloth for yarn side and anti-for yarn side, namely knit at two that weave cotton cloth the example that side arranges limit forming apparatus 1 and be illustrated, but the present invention be also applicable to weave at the same time formed in the wide loom of multiple tune that polylith weaves cotton cloth in limit.In this case, except loom for yarn side and anti-for except yarn side, also correspond to the end of knitting of respectively weaving cotton cloth and 2 limit forming apparatuss 1 be set, between adjacent weaving cotton cloth (such as: adjust the 1st of two width the, the 2nd weave cotton cloth between) formed in limit.In addition, in this case, according to the embodiment shown in Fig. 1-10,2 the limit forming apparatuss 1 be arranged between adjacent weaving cotton cloth can possess independently limit yarn path switching device 2,2 limit forming apparatuss 1 separately and also jointly can use 1 limit yarn path switching device 2.

Example such as shown in Figure 21 have employed 2 not shown limit yarn shedding motions 3 and 1 limit yarn path switching device 2, with the 1st weave cotton cloth the 127 and the 2nd weave cotton cloth formed respectively on 128 in limit.In this example embodiment, form 3 by 3 limit yarns 16 (the 1st limit yarn 16a, 16b, the 2nd limit yarn 16c) and be wound around strand limit, and, 1st weave cotton cloth 127 the 2nd limit yarn 16c and the 2nd weave cotton cloth 128 the embodiment shown in the 2nd limit yarn 16c and Fig. 1-10 identical, conjugated at above-below direction by one or the other in 2 not shown limit yarn shedding motions respectively and form opening.

On the other hand, about the switching in the path of the 1st limit yarn 16a, 16b, by 1 limit yarn path switching device 2 to the 1st weave cotton cloth the 127 and the 2nd weave cotton cloth 128 both sides switch.On the base component 129 of the displacement parts 7 as limit yarn path switching device 2 of illustrative example, be provided with as the 1st of limit yarn guiding parts 5 weave cotton cloth 127 limit yarn guide rod 130a, 130b and the 2nd weave cotton cloth 128 with limit yarn guide rod 131a, 131b.Base component 129 is fixed on the bolster 132 as support unit 6, and identical with the embodiment shown in Fig. 1-10, makes base component 129 swing movement by not shown drive unit 8 via bolster 132, switches the path of the 1st limit yarn 16a, 16b.

In the example of Figure 21,1st limit yarn guiding 133a, 133b, 134a, 134b is equivalent to the 1st limit yarn guiding 44a, 44b in the embodiment shown in Fig. 1-10, and limiting part 135,136 is equivalent to the limiting part 15 in the embodiment shown in Fig. 1-10.

Limit of the present invention forming apparatus also can be used as slitter edge forming apparatus.In this case, being held by the limit yarn as the limit of the present invention forming apparatus being configured in the slitter edge forming apparatus of knitting end by the weft yarn front end of wefting insertion and formed and twist limit, to weave cotton cloth and the position of twisting between limit is cut into as slitter edge from weaving cotton cloth by cutter cut-out weft yarn in the strand limit formed after beating up.Front end and the limit yarn of cut-off slitter edge, i.e. weft yarn finally go out of use.

Claims

1. a limit forming apparatus (1), inserting weft (17) in the limit yarn opening formed by the 1st limit yarn (16a, 16b) and the 2nd limit yarn (16c) and weave cotton cloth knit end (19) formed be wound around strand limit, it comprises:

Limit yarn shedding motion (3), it is compared fell (24) and is configured in warp thread and sends side and the path of the 2nd limit yarn (16c) is conjugated in the vertical direction; And

Limit yarn path switching device (2), it at least periodically switches relative to the 2nd limit yarn (16c) in the path of the chien shih the 1st limit yarn (16a, 16b) on fell (24) and limit yarn shedding motion (3) between the longitude yarn row side in woven pieces direction and these 2 positions, anti-longitude yarn row side

The feature on described limit forming apparatus (1) is,

Described limit forming apparatus (1) comprises guiding parts (27), this guiding parts (27) is compared described limit yarn shedding motion (3) and is fixedly arranged on warp thread and sends side and lead to the 2nd limit yarn (16c), and, position when between described guiding parts (27) and fell (24), the path of the 2nd limit yarn (16c) to be limited in described limit yarn opening be maximum open

Described limit yarn shedding motion (3) possesses:

By rotatable parts (10), it is fixedly arranged on the framework (20) of loom, can rotate around the axis at least intersected with above-below direction;

Component (9), it is bearing in described by rotatable parts (10), and, conjugated by the described swing-around trajectory specified by the periphery of rotatable parts (10) by the rotation of rotatable parts (10) along with described, and coordinating with the 2nd limit yarn (16c) and the path of the 2nd limit yarn (16c) is conjugated at least in the vertical direction;

Drive unit (11), it makes described by rotatable parts (10) rotating drive toward the direction; And

Driving control device (140), it controls the rotating drive of drive unit (11),

Describedly to be set to by the position of rotatable parts (10) relative to the above-below direction of the 2nd limit yarn (16c): on the above-below direction of the center of the described swing-around trajectory of warp thread direction, the distance the 2nd limit yarn (16c) during from the center of described swing-around trajectory to described maximum open is than short from the distance of center to the position of the described component (9) conjugated at described swing-around trajectory of described swing-around trajectory.

2. limit according to claim 1 forming apparatus (1), it is characterized in that, described driving control device (140) is with drive unit (11) described in mode variable speed drives elongated during making described component (9) and the 2nd limit yarn separate.