CN102758300A - Edge yarn cloth fell stabilizing device and air jet loom capable of preventing edge of low-density fabric from being broken - Google Patents
Edge yarn cloth fell stabilizing device and air jet loom capable of preventing edge of low-density fabric from being broken Download PDFInfo
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- CN102758300A CN102758300A CN2012102288442A CN201210228844A CN102758300A CN 102758300 A CN102758300 A CN 102758300A CN 2012102288442 A CN2012102288442 A CN 2012102288442A CN 201210228844 A CN201210228844 A CN 201210228844A CN 102758300 A CN102758300 A CN 102758300A
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Abstract
The invention aims to solve the defects of the existing loom that during the process of weaving the low-density fabric, the weft on the edge of the fabric slides or the edge of the fabric is broken, and provides an edge yarn cloth fell stabilizing device and an air jet loom capable of preventing the edge of the low-density fabric from being broken. The edge yarn cloth fell stabilizing device is a cloth support device composed of an upper support and a lower support, wherein a gap for the edge of the fabric to pass is arranged between the upper and the lower supports. By adopting the edge yarn cloth fell stabilizing device and the loom, as the cloth face passes through the gap between the upper and the lower supports, when the warps are opened, the upper and the lower supports can prevent the opening positions of the upper and the lower warps from moving forward, so as to keep the opening at the positions as required by the design; and as the clamping forces of the warps on the edge of the fabric on the wefts are basically identical, during the weft feeding, the preceding weft on the edge of the fabric slips off between the upper and the lower warps, as a result, the broken edge caused during the production of the low-density fabric is avoided.
Description
Technical field
The present invention relates to a kind ofly prevent the limit yarn fell stabilising arrangement on the mashed limit of fabric limit yarn and prevent the air-jet loom on the mashed limit of low-density fabric.
Background technology
At present, the loom on the market, fabric limit portion extensively adopts temple (claiming licker-in roller again) device, when warp thread and weft yarn accomplish interweave after, under the dragging of work beam, fabric is through side shoring device, brest beams guide plate and expanding device entering work beam, then on the reel-to-reel cloth rewinder roll.When fabric process side shoring device; Because bending deformation is big, fabric and side shoring device such as temple cover, licker-in roller etc. produce sliding friction, when the woven pick count of loom institute is very little; When being gauze or glass fabric such as woven fabric; Its weft yarn arrangement is gapped, and weft yarn can produce slippage during fabric moved, and produced skew of weft; If do not use side shoring device, the weft yarn warp thread power that interweaves is little, portion's fell reach on the fabric limit; The last warp thread that is positioned at fabric limit portion and the chucking power of following warp thread to weft yarn are weakened, and a last latitude has been accomplished the weft yarn that interweaves just from the selvedge slippage during next latitude opening, and the limit phenomenon is rotted in formation; Influence the fabric end product quality; Particularly very little as when being 5-10 root/inch when pick count, carry out high speed when weaving, this defective is all the more obvious.Along with the client improves constantly what fabric quality required, be badly in need of head it off.
Summary of the invention
The objective of the invention is to loom in the prior art; In the process of weaving the low-density fabric; Make fabric limit portion weft yarn generation slippage or produce the deficiency on mashed limit; Provide a kind of when production low-density fabric, can not only prevent that weft yarn from producing slippage, and can prevent the fabric limit yarn fell stabilising arrangement on the mashed limit of fabric and prevent the air-jet loom on the mashed limit of low-density fabric.
The objective of the invention is to realize through following technical proposals:
A kind of limit yarn fell stabilising arrangement comprises mop device, and said mop device is made up of with holding in the palm down pop-up, is provided with the gap that supplies fabric limit portion to pass between said pop-up and following holder;
Described pop-up and described holder down laterally arrange;
Pad is adjusted in described pop-up and the described gap that is provided with between holder down, forms described gap by the described pop-up in interval of described gap adjustment pad with holding in the palm down;
Described gap adjustment pad is " U " type;
The fixture that also comprises mop device is fixed on the pop-up of described mop device on the loom with holding in the palm down by said fixture;
Said fixture comprises " L " type bracket, fixed block and " L " type support plate; The antetheca of the base of said bracket is provided with the base connecting hole; Corresponding with said base connecting hole; Said fixed block is provided with the fixed block connecting hole, is fixedly connected with the sidewall side of said bracket by the side plate of said support plate, by the base plate of described support plate fixing described holder and described pop-up down;
The front end of described pop-up is than holding in the palm the short H of front end down;
The described front end of the bottom surface of holder down is provided with the inclined-plane;
Described gap is 0.1-2mm.
A kind of air-jet loom that prevents the mashed limit of low-density fabric; Comprise reed, said reed is provided with the reed groove that is formed by nose under nose on the reed and the reed, also comprises the limit yarn fell stabilising arrangement that is separately positioned on said loom both sides; Said limit yarn fell stabilising arrangement is made up of the fixture of mop device and mop device; Said mop device is made up of pop-up and following holder, and said pop-up and said is provided with the gap that confession fabric limit portion is passed down between holder, said mop device is fixed on the both sides of said loom by said fixture; When said reed was positioned at the reed front position, the pop-up front end all was positioned at said reed groove with following holder front end.
Another embodiment, a kind of air-jet loom that prevents the mashed limit of low-density fabric comprises reed; Said reed is provided with the reed groove that is formed by nose under nose on the reed and the reed; Also comprise the limit yarn fell stabilising arrangement that is separately positioned on said loom both sides, said limit yarn fell stabilising arrangement is made up of the fixture of mop device and mop device, and said mop device is made up of with holding in the palm down pop-up; Said pop-up and the said gap that supplies fabric limit portion to pass that is provided with between holder down; By said fixture said mop device is fixed on the both sides of said loom, the front end of said pop-up is than the short H of holder front end down, when said reed is positioned at the reed front position; Nose is at a distance of the distance of D on said pop-up front end and the said reed, and said holder front end down is positioned at said reed groove;
Further, described pop-up and described holder down laterally arrange;
Pad is adjusted in described pop-up and the described gap that is provided with between holder down, forms described gap by the described pop-up in interval of described gap adjustment pad with holding in the palm down;
Further, described gap adjustment pad is " U " type;
Further, also comprise the fixture of mop device, the pop-up of described mop device is fixed on the loom with holding in the palm down by said fixture;
Further; Said fixture comprises " L " type bracket (1), fixed block and " L " type support plate; The antetheca of the base of said bracket is provided with the base connecting hole, and corresponding with said base connecting hole, said fixed block is provided with the fixed block connecting hole; Side plate by said support plate is fixedly connected with the sidewall side of said bracket, by fixing described holder and the described pop-up down of the base plate of described support plate;
Further, the value of described D is 0mm＜D≤3mm;
Further, the described front end of the bottom surface of holder down is provided with the inclined-plane;
Further, described gap is 0.1-2mm.
Adopt fabric of the present invention limit yarn fell stabilising arrangement, owing to cloth cover passes through, during Warp opening in the gap of pop-up and holder down; Pop-up can stop warp thread and the reach of following Warp opening position with following holder; Make aperture position remain on the position of designing requirement, fabric limit portion warp thread keeps basically identical to the weft yarn chucking power, prevents when going into latitude; A last weft yarn that is positioned at fabric limit portion comes off between last warp thread and following warp thread, thereby prevents that mashed limit from producing.
Adopt the air-jet loom that prevents the mashed limit of low-density fabric of structure of the present invention, can weave the low-density fabric, the mashed limit of fabric does not take place.
Description of drawings
Fig. 1 is a fell stabilising arrangement example structure exploded perspective view of the present invention;
Fig. 2 a is for holding in the palm the sketch map of example structure front view down;
Fig. 2 b is the vertical view of Fig. 2 a;
Fig. 3 concerns sketch map for fabric of the present invention limit yarn fell stabilising arrangement embodiment and reed position when reed is positioned at the reed front position;
Fig. 4 is Fig. 3 local I enlarged diagram;
Fig. 5 is fell reach sketch map;
Fig. 6 is another example structure sketch map of fell stabilising arrangement of the present invention.
Description of reference numerals
The 1- bracket 2- fixed block 3- connecting bolt 4- support plate 5- fell 30- supporting spring slotted hole 31- pad connecting hole 32- that down nose 23- goes up warp thread 25- reed 26- pilot jet 27- fell 28- reed groove 29- reach under the warp thread 24- under the nose 22- reed on the 20- fabric 21- reed of adjustment 17- base connecting hole 18- fixed block connecting hole 19- bottom surface, 16- sidewall side, pad 7- pop-up 9- trapezoidal strut 10- side plate slotted hole 11- base plate 12- side plate 13- sidewall 14- base 15- inclined-plane, holder 6- gap is holder front end 33- gap down
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further description:
It is example that the present invention is arranged on the air-jet loom with this limit yarn fell stabilising arrangement, and the installation and the use of this limit yarn fell stabilising arrangement is described further.
This limit yarn fell stabilising arrangement is to the substituting of side shoring device in the prior art, and keeps the trapezoidal strut 9 of former side shoring device, keeps the structure of trapezoidal strut 9 and installation site constant.
Shown in Figure 5 like Fig. 1, Fig. 2 a, Fig. 2 b-, limit of the present invention yarn fell stabilising arrangement comprises mop device, by the Tobe fixture this mop device is fixed on the loom.Mop device is made up of pop-up 7 and following holder 5, is provided with gap adjustment pad 6 in pop-up with between holding in the palm down, and the effect that pad 6 is adjusted in the gap is to make pop-up and keep certain clearance between holder down, and confession fabric limit portion is passed.Preferred pop-up and following the holder all in the form of sheets, the two laterally arranges up and down, with holding in the palm down supporting spring slotted hole 30 is set all in pop-up, conveniently adjusts pop-up and the position of holding in the palm down.According to the structure of existing loom, the preferred immobilization device is made up of support plate 4, bracket 1 and fixed block 2.Support plate 4 is made up of base plate 11 and side plate 12, is " L " type.Bracket 1 is made up of sidewall 13 and base 14, is " L " type.Side plate 12 is provided with side plate slotted hole 10, and sidewall side 16 is provided with connecting hole, support plate 4 and bracket 1 is fixed together through side plate slotted hole 10 and connecting hole by connecting bolt 3.The antetheca of base 14 is provided with base connecting hole 17; Corresponding with base connecting hole 17; Fixed block 2 is provided with fixed block connecting hole 18, bracket 1 clamping is installed on the trapezoidal strut 9 that is positioned on the loom front rest through fixed block connecting hole 18 and base connecting hole 17 by bolt.Gap adjustment pad 6 is provided with pad connecting hole 31; The base plate connecting hole that is provided with on supporting spring slotted hole 30 and pad connecting hole 31 and the base plate is corresponding, mop device is fixed on the support plate 4 through supporting spring slotted hole 30, pad connecting hole 31 and base plate connecting hole by bolt.
The front end H distance that the front end that preferably holds in the palm down is longer than pop-up.Pop-up and the thickness that holds in the palm down be can guarantee like this, pop-up and holder shake under the effect of warp tension down prevented.
Preferably the front end of the bottom surface 19 of holder 5 is provided with inclined-plane 15 down, makes things convenient for the installation of fell stabilising arrangement like this.
Fixture is different because of the concrete installation environment structure of all kinds of looms, as long as but can on request mop device be fixedly installed on the loom.
Certainly, the gap 33 between pop-up and following holder also can form through alternate manner, forms certain distance as long as make between pop-up and following the holder, supplies fabric limit portion to pass and gets final product.Such as shown in Figure 6, by the fixedly pop-up and holder down respectively of the support plate of fixture, through the side plate slotted hole 10 adjustment pop-ups that are provided with on the support plate and the position of holder on loom down, make pop-up and down between holder at a distance of certain distance, form gap 33.
Limit of the present invention yarn fell stabilising arrangement is arranged in pairs on the loom, and it is separately positioned on the both sides of loom through fixture.
Like Fig. 3 and shown in Figure 4, during installation, arriving the reed front position with reed is benchmark.When reed 25 arrives the reed front position; And when pop-up front end and following holder front end 32 are concordant structures; Pop-up front end and following holder front end 32 all are positioned at the reed groove 28 that nose 22 forms under the nose 21 and reed on the reed, and not with reed 25 and reed under nose 21 and the reed nose 22 bump.Holder front end 32 in short-term under the front end ratio of pop-up; Under ask front end 32 to be positioned at reed groove 28; And the front end of pop-up is positioned at outside the reed groove, the front end of pop-up 7 not with reed on the front end crash of nose 21, at a distance of the distance of D; The value of D is more little good more, as long as reed can not bump against with pop-up when reed arrives foremost position.The maximum of D does not surpass 3MM usually, otherwise pop-up will lose the positioning function to last warp thread 23, and the value of general D so both had been convenient to operation between 0.5-3mm, can bring into play the effect of limit yarn fell stabilising arrangement again.
Can adjust pop-up 7 and the high and low position of holder 5 down and angle of inclination with respect to the horizontal plane through side plate slotted hole 10, still to keep straight being advisable behind the end face of fabric limit portion through ladder type strut 9.Can make pop-up keep substantially parallel like this with holding in the palm down with the direct of travel of fabric 20.
Regulate the distance between pop-up and the following holder through the thickness of selecting adjustment pad 6.Select the thickness of pad to adjust the gap between pop-up and following holder according to the thickness of fabric, the kind of fabric; Thin when fabric, when the fabric material is more smooth; Select thin pad to obtain less clearance; Otherwise select thicker pad to obtain bigger gap; Pop-up and down the gap between holder so that fabric limit portion pop-up and down between the holder through the time fabric weft yarn do not produce slippage, and can stop fabric when opening under the effect of warp tension the fell reach be advisable, can prevent like this that warp thread and following warp thread from losing grasping force to the weft yarn of fabric limit end and forming the limit yarn rots the limit.Usually gap value is 0.1-2mm.During through the gap between pad control pop-up and following holder, the thickness of pad is 0.1-2mm.
The mounting means of the left and right sides is identical, the following holder of noting being positioned at the right side during installation not with reed under nose, pilot jet 26, visit the latitude head and collide.Pop-up 7 not with reed on nose collide.
Preferred holder down and pop-up are board-like, and it is circular-arc that front end is, plating hard chromium on surface.
The front end of the lower surface of following holder is provided with the inclined-plane 15 that reduces its nose thickness, prevent down holder stretch into the reed groove when interior and under the reed nose and auxilliary nozzle collide.
The fabric limit yarn fell stabilising arrangement of this structure is being weaved filling density and/or on the loom of close sparse, fabric that the relative slippage of weft yarn is bigger such as glass fabric and gauze etc., is being used; Can prevent effectively that fabric from mashed limit taking place, and has a significant effect to the quality that improves fabric.The design and the retrofitting of used machine that can be used for new loom,
When weaving, the right sides portion of fabric from being positioned at the left side and being positioned at the pop-up on right side and passing between holder down, enters on the batching axle respectively.
When Warp opening, pop-up can stop that the warp thread fell was put movable inclined angle when warp thread 23 became big because of warp tension in the portion of limit and change, last warp thread has been played positioning action; Equally; Following holder can stop that subordinate's warp thread 24 warp thread fell under the effect of warp tension in limit puts movable inclined angle and change, and following holder can position warp thread down, and the position of controlled like this weaving thing limit portion fell 27 is in the position of design; Prevent fell 27 reach, prevent that fabric from rotting the limit.In Fig. 5, provided the contrast of 29 of the fells of normal fell 27 and reach.
Claims (19)
1. a limit yarn fell stabilising arrangement is characterized in that, comprises mop device, and said mop device is by pop-up (7) and ask (5) to form down, is provided with the gap (33) that supplies fabric (20) limit portion to pass between said pop-up (7) and following holder (5).
2. a kind of limit as claimed in claim 1 yarn fell stabilising arrangement is characterized in that, described pop-up (7) and described holder (5) down laterally arrange.
3. a kind of limit as claimed in claim 1 yarn fell stabilising arrangement; It is characterized in that; Pad (6) is adjusted in described pop-up (7) and the described gap that is provided with between holder (5) down, forms described gap (33) by described gap adjustment pad (6) the described pop-up in interval with holding in the palm down.
4. a kind of limit as claimed in claim 3 yarn fell stabilising arrangement is characterized in that, described gap adjustment pad is " U " type.
5. a kind of limit as claimed in claim 1 yarn fell stabilising arrangement is characterized in that, also comprises the fixture of mop device, by said fixture the pop-up of described mop device is fixed on the loom with holding in the palm down.
6. a kind of limit as claimed in claim 5 yarn fell stabilising arrangement; It is characterized in that; Said fixture comprises " L " type bracket (1), fixed block (2) and " L " type support plate (4); The antetheca of the base of said bracket (14) is provided with base connecting hole (17), and is corresponding with said base connecting hole (17), and said fixed block (2) is provided with fixed block connecting hole (18); Side plate (12) by said support plate (4) is fixedly connected with the sidewall side (16) of said bracket (14), by fixing described holder and the described pop-up down of the base plate (11) of described support plate (4).
7. a kind of limit as claimed in claim 1 yarn fell stabilising arrangement is characterized in that, the front end of described pop-up (5) is than holding in the palm the short H of front end (32) down.
8. a kind of limit as claimed in claim 1 yarn fell stabilising arrangement is characterized in that, the described front end of the bottom surface (19) of holder (5) down is provided with inclined-plane (15).
9. a kind of limit as claimed in claim 1 yarn fell stabilising arrangement is characterized in that described gap (33) are 0.1-2mm.
10. air-jet loom that prevents the mashed limit of low-density fabric; Comprise reed; Said reed is provided with the reed groove (28) that is formed by nose (22) under nose on the reed (21) and the reed, it is characterized in that, also comprises the limit yarn fell stabilising arrangement that is separately positioned on said loom both sides; Said limit yarn fell stabilising arrangement is made up of the fixture of mop device and mop device; Said mop device is by pop-up (7) and ask (5) to form down, and said pop-up (7) and said the holder down are provided with the gap (33) that supplies fabric limit portion to pass between (5), said mop device is fixed on the both sides of said loom by said fixture; When said reed (25) was positioned at the reed front position, the pop-up front end all was positioned at said reed groove (28) with following holder front end.
11. an air-jet loom that prevents the mashed limit of low-density fabric comprises reed, said reed is provided with the reed groove (28) that is formed by nose (22) under nose on the reed (21) and the reed; It is characterized in that; Also comprise the limit yarn fell stabilising arrangement that is separately positioned on said loom both sides, said limit yarn fell stabilising arrangement is made up of the fixture of mop device and mop device, and said mop device is by pop-up (7) and ask (5) to form down; Said pop-up (7) and the said gap (33) that supplies fabric limit portion to pass that is provided with between holder (5) down; By said fixture said mop device is fixed on the both sides of said loom, the front end of said pop-up (5) is than the short H of holder front end (32) down, when said reed (25) is positioned at the reed front position; Nose (21) is at a distance of the distance of D on said pop-up front end and the said reed, and said holder front end (32) down is positioned at said reed groove (28).
12., it is characterized in that described pop-up (7) and described holder (5) down laterally arrange like claim 10 or the 11 described air-jet looms that prevent the mashed limit of low-density fabric.
13. like claim 10 or the 11 described air-jet looms that prevent the mashed limit of low-density fabric; It is characterized in that; Pad (6) is adjusted in described pop-up (7) and the described gap that is provided with between holder (5) down, forms described gap (33) by described gap adjustment pad (6) the described pop-up in interval with holding in the palm down.
14., it is characterized in that described gap adjustment pad is " U " type like claim 10 or the 11 described air-jet looms that prevent the mashed limit of low-density fabric.
15., it is characterized in that like claim 10 or 11 described a kind of limit yarn fell stabilising arrangements, also comprise the fixture of mop device, by said fixture the pop-up of described mop device is fixed on the loom with holding in the palm down.
16. the air-jet loom that prevents the mashed limit of low-density fabric as claimed in claim 15; It is characterized in that; Said fixture comprises " L " type bracket (1), fixed block (2) and " L " type support plate (4); The antetheca of the base of said bracket (14) is provided with base connecting hole (17), and is corresponding with said base connecting hole (17), and said fixed block (2) is provided with fixed block connecting hole (18); Side plate (12) by said support plate (4) is fixedly connected with the sidewall side (16) of said bracket (14), by fixing described holder and the described pop-up down of the base plate (11) of described support plate (4).
17. the air-jet loom that prevents the mashed limit of low-density fabric as claimed in claim 11 is characterized in that the value of described D is 0mm＜D≤3mm.
18., it is characterized in that the described front end of the bottom surface (19) of holder (5) down is provided with inclined-plane (15) like claim 10 or the 11 described air-jet looms that prevent the mashed limit of low-density fabric.
19., it is characterized in that described gap (33) are 0.1-2mm like claim 10 or the 11 described air-jet looms that prevent the mashed limit of low-density fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102288442A CN102758300B (en) | 2012-06-23 | 2012-06-23 | Edge yarn cloth fell stabilizing device and air jet loom capable of preventing edge of low-density fabric from being broken |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102288442A CN102758300B (en) | 2012-06-23 | 2012-06-23 | Edge yarn cloth fell stabilizing device and air jet loom capable of preventing edge of low-density fabric from being broken |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102758300A true CN102758300A (en) | 2012-10-31 |
| CN102758300B CN102758300B (en) | 2013-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102288442A Expired - Fee Related CN102758300B (en) | 2012-06-23 | 2012-06-23 | Edge yarn cloth fell stabilizing device and air jet loom capable of preventing edge of low-density fabric from being broken |
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| CN (1) | CN102758300B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0335011A2 (en) * | 1988-03-26 | 1989-10-04 | Lindauer Dornier Gesellschaft M.B.H | Air jet loom with clamping and drafting device |
| JPH0790751A (en) * | 1993-09-21 | 1995-04-04 | Toyota Autom Loom Works Ltd | Pile forming device in pile loom |
| CN200988888Y (en) * | 2006-12-20 | 2007-12-12 | 江苏万工科技集团有限公司 | Full width temple device of air jet loom |
| JP2009013539A (en) * | 2007-07-06 | 2009-01-22 | Tsudakoma Corp | Roller temple for loom and method for manufacturing temple body |
| CN201400752Y (en) * | 2009-01-08 | 2010-02-10 | 浙江东盛精密机械有限公司 | Side shoring device for rapier velvet loom |
| CN101760875A (en) * | 2008-11-11 | 2010-06-30 | 吴江市海成纺织有限公司 | Selvedge side shoring device |
| CN202809128U (en) * | 2012-06-23 | 2013-03-20 | 咸阳经纬纺织机械有限公司 | Device for stabilizing edge yarn weaving openings |
| CN202809120U (en) * | 2012-06-23 | 2013-03-20 | 咸阳经纬纺织机械有限公司 | Air-jet loom preventing broken selvage of low-density fabric |
-
2012
- 2012-06-23 CN CN2012102288442A patent/CN102758300B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0335011A2 (en) * | 1988-03-26 | 1989-10-04 | Lindauer Dornier Gesellschaft M.B.H | Air jet loom with clamping and drafting device |
| JPH0790751A (en) * | 1993-09-21 | 1995-04-04 | Toyota Autom Loom Works Ltd | Pile forming device in pile loom |
| CN200988888Y (en) * | 2006-12-20 | 2007-12-12 | 江苏万工科技集团有限公司 | Full width temple device of air jet loom |
| JP2009013539A (en) * | 2007-07-06 | 2009-01-22 | Tsudakoma Corp | Roller temple for loom and method for manufacturing temple body |
| CN101760875A (en) * | 2008-11-11 | 2010-06-30 | 吴江市海成纺织有限公司 | Selvedge side shoring device |
| CN201400752Y (en) * | 2009-01-08 | 2010-02-10 | 浙江东盛精密机械有限公司 | Side shoring device for rapier velvet loom |
| CN202809128U (en) * | 2012-06-23 | 2013-03-20 | 咸阳经纬纺织机械有限公司 | Device for stabilizing edge yarn weaving openings |
| CN202809120U (en) * | 2012-06-23 | 2013-03-20 | 咸阳经纬纺织机械有限公司 | Air-jet loom preventing broken selvage of low-density fabric |
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|---|---|
| CN102758300B (en) | 2013-11-20 |
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