CN1257946A - Lever for operating yarn gripping device in pair-of-weft yarn feeding and draw-off gripper for loom - Google Patents
Lever for operating yarn gripping device in pair-of-weft yarn feeding and draw-off gripper for loom Download PDFInfo
- Publication number
- CN1257946A CN1257946A CN99126168A CN99126168A CN1257946A CN 1257946 A CN1257946 A CN 1257946A CN 99126168 A CN99126168 A CN 99126168A CN 99126168 A CN99126168 A CN 99126168A CN 1257946 A CN1257946 A CN 1257946A
- Authority
- CN
- China
- Prior art keywords
- lever
- main body
- yarn gripper
- yarn
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001141 propulsive effect Effects 0.000 claims description 17
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 10
- 230000032258 transport Effects 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 4
- 229920001169 thermoplastic Polymers 0.000 claims description 4
- 239000004416 thermosoftening plastic Substances 0.000 claims description 4
- 238000005219 brazing Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013036 cure process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
- D03D47/20—Constructional features of the thread-engaging device on the inserters
- D03D47/23—Thread grippers
- D03D47/233—Carrying grippers
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
- D03J5/00—Shuttles
- D03J5/06—Dummy shuttles; Gripper shuttles
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
- D03D47/20—Constructional features of the thread-engaging device on the inserters
- D03D47/23—Thread grippers
- D03D47/236—Drawing grippers
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Binders And Loading Units For Sheaves (AREA)
Abstract
In a lever to operate the weft yarn gripping devices, in a pair of weft carrying and drawing grippers for shuttleless looms, the fulcrum of said lever (1; 10) is fixed to the gripper body by fixing means which are external to the peripheral surface enveloping the lever (1; 10).
Description
The present invention relates to a kind ofly transport and draw in the yarn gripper lever, especially the lever articulated mounting of operation weft yarn thread nipper assembly at a pair of weft yarn that is used for shuttleless loom.
The device that on weaving market the weft yarn of loom is transported yarn gripper and mounted thereto has the requirement of Continual Improvement, makes these members can guarantee that most of modern looms perfectly work, even be difficult under the woven situation.In fact, in order to produce high-quality precious fabric, loom need provide more and more higher weaving performance, high warp tension is particularly arranged, use very thin or meticulous weft yarn or have the yarn of other specific physical performance and less opening angle; All these, and high loom operating rate.
In order to obtain above-mentioned high weaving performance, loom is necessary to make its basic element of character, and for example a pair of weft yarn transports/draw yarn gripper, guarantees that to carry out Continual Improvement required weft yarn inserts performance and makes yarn gripper that the working life of enough length be arranged.Especially when the design yarn gripper, independent size of components is dwindled gradually,, and reduce the internal load of loom so that yarn gripper weight reduces and size is dwindled, thereby bears alternate stress more safely.
In order to satisfy these requirements, the improvement structure that the applicant has conceived and the weft yarn that partners transports/draw yarn gripper is to strengthen yarn gripper hardness and attrition resistance simultaneously and to reduce weight.This structure is the theme of No. the 99106429.6th, european patent application, and its content at this as a reference.
State in design yarn gripper to the time, except general architectural feature, the size of isolated system of dwindling mounted thereto is also very important, weft yarn thread nipper assembly especially, the present invention is promptly relevant therewith.Certainly, the purpose of minification is to dwindle the overall dimensions of yarn gripper, and thereby minimizing yarn gripper weight and yarn gripper mobile required shed open angle between warp thread.
The inventor notices the weft yarn thread nipper assembly, and the problem that is faced during the more cramped construction of the required lever of special this kind of research operation device.In fact, the lever of known operation weft yarn thread nipper assembly generally is to utilize coaxial fixture to be fixed on the yarn gripper main body, corresponding its pin joint.The hinge axes of lever thereby quite wide radial width is arranged, it must cover it is anchored on threaded connector or rivet on the yarn gripper main body, and by this, radial width becomes big thereby has influenced the last size of lever.
Therefore, the object of the present invention is to provide the improved fixed system of the lever of a kind of operation weft yarn thread nipper assembly (a pair of weft yarn at loom transports and draws in the yarn gripper), this fixed system has more compact structure, higher mechanical is arranged simultaneously, to dwindle the size of the yarn gripper main body that covers device, guarantee that simultaneously this device increases for the drag of the mechanical stress that applies.
According to the present invention, transport and draw the lever of operation weft yarn thread nipper assembly in the yarn gripper with an a pair of weft yarn and realized above-mentioned purpose at shuttleless loom, fulcrum/the fulcrum of lever is fixed on the yarn gripper main body via suitable fixture, it is characterized in that fixture is to encase outside the circumferential surface of lever.
In first embodiment of the present invention, fulcrum/fulcrum is included in a cylindrical cavity in the yarn gripper main body, the columnar portion of lever with matching is engaged in and is able in the cylindrical cavity freely rotate, and cavity is with the integrated periphery of yarn gripper main body and utilize fixture to be fixed between the relative periphery of propulsive thrust piece on the yarn gripper main body.
In second embodiment of the present invention, fulcrum/fulcrum comprises a backing pin shaft that is articulated in lever, and in the pedestal of this bearing pin in the yarn gripper main body, the end of bearing pin then is connected with fixture.
Describe some preferred embodiment of the present invention by way of example in detail below in conjunction with accompanying drawing, wherein:
Fig. 1 is that the weft yarn of first embodiment of the lever of operations according to the instant invention weft yarn thread nipper assembly transports the yarn gripper decomposition diagram.
Fig. 2 is that circle II decomposes among Fig. 1 operating lever is in the perspective view of installation site.
Fig. 3 is the enlarged drawing of similar Fig. 2, and wherein operating lever is partly cut open partly and removed.
Fig. 4 is the enlarged drawing of the operating lever pedestal of Fig. 2, and wherein part is cut open partly and removed.
Fig. 5 is the decomposition diagram of weft yarn traction yarn gripper of second embodiment that is provided with the lever of operation weft yarn thread nipper assembly of the present invention.
Fig. 6 be among Fig. 5 yarn gripper in the perspective view of installation site.
Fig. 7 is the enlarged drawing of Fig. 6 details, and the pivot axle bush of operating lever among Fig. 5 or Fig. 6 is shown, and its part is cut part open and removed.
Fig. 8 is the enlarged drawing of Fig. 6 details, and the pivot system of operating lever among Fig. 5 or Fig. 6 is shown, and its pastern branch is cut part open and removed.
Below consult first embodiment that Fig. 1 to 4 (it is clearly shown that operating lever 1 shape) describes the lever of operation weft yarn thread nipper assembly of the present invention.Except 1a of front clamp portion and back clamping part 1p, lever 1 is known still a 1c of central cylindrical portion, and it is in the shape of the letter V and two part 1a, and 1p connects.The 1c of central cylindrical portion of lever 1 leans against on the lever 1 base for supporting S periphery 2 that cooperates with it, and the rotation of periphery 2 overlaps with the predetermined rotation of lever 1.Lever is to be formed by blank steel (blanked steel) bend-forging, and base S is made by thermoplastic, and for example nylon adds teflon (polytetrafluoroethylene (PTFE)) or other grease packing at last, and be fixed on the yarn gripper main body, person described in above-mentioned european patent application with screw device.
Operating lever 1 central portion 1c utilizes a propulsive thrust piece 4 (Fig. 3) to be fixed on the periphery 2 that is against base for supporting S.Propulsive thrust piece 4 also is to be made by thermoplastic, and comprises the columnar portion that corresponding periphery matches and width is identical with lever 1 central portion 1c.This structure is to utilize two vertical walls 3 (Fig. 4) of base for supporting S and finish, and two vertical walls 3 extend laterally and limit contiguous lever 1 both sides from periphery 2 two outer rims.Wall 3 comprises two relative openings, and wherein a hole is inserted a bearing pin 6 (Fig. 2) and fixed propulsive thrust piece 4.Bearing pin 6 passes the through hole 4f of whole block 4, and utilize to fasten or screw thread is screwed into the relative opening of wall 3 and fixes.Wall 3 is provided with side chimb 3n at last on the top, the last projection of restriction propulsive thrust piece 4 between the two chimb 3n, thereby prevent that propulsive thrust piece 4 from rotating around bearing pin 6.
By this kind arrangement, lever 1 has only one degree of freedom, that is only can be around the cylindrical bearing surface of base for supporting S 2 formed fulcrums/fulcrum rotation.In fact, propulsive thrust piece 4 can prevent that lever from vertical direction and horizontally vertically moving, omitting required idle running, and wall 3 can prevent that lever 1 from moving in horizontal cross.Utilize the excellent in shape stability material to carry out the injection molded technology of thermoplastic resin portion, lever 1 rotation (that is rotation of the periphery 2 of aforementioned base for supporting S) is accurately alignd with weft yarn clamping face (being defined by a thin plate 5 that is fixed on base for supporting).In this regard, in fact should note good coplanarity between lever 1 clamping part 1a and the base for supporting S (or thin plate 5), guarantee the uniformity of exerting pressure when weft yarn slides between clamping components, with the pressure summit (for example causing fiber spin-off) that prevents to cause fabric defect and/or undermine yarn quality.
If propulsive thrust piece 4 peripheries have and surperficial 2 identical start points, the start point of the columnar portion 1c of lever 1 is answered the wide at least degree that goes out the maximum anglec of rotation of lever 1 of specific surface 2 start points; Have only this arrangement can be actual in the correct rotation of guaranteeing columnar portion 1c in the cylindrical cavity that forms between base for supporting S surface 2 and the propulsive thrust piece 4 corresponding peripheries under the undisturbed situation.
By preceding described, first embodiment of operating lever can reach the present invention's purpose fully.Outside the weft yarn holding function, lever in fact size can dwindle, to eliminate the problem that lever inserts its fixture.In fact described device outside the peripheral surface that surrounds lever, therefore can be made with the lever size irrelevant.On the other hand, lever 1 is guided in very accurate and very reliable mode, and it moves between periphery with significant start point; It has very big advantage, and prolongs the lever life-span, because traditional bearing pin far is wider than on the surface that caused wearing and tearing are moved at the angle that lever repeats to be influenced.At last, can eliminate idle running, not relate to lever 1 (can increase size at last), take into account with any wearing and tearing that will influence base for supporting S surface 2 by substitute simply propulsive thrust piece 4.
Fig. 5 to 8 illustrates second embodiment that the present invention operates the lever of weft yarn thread nipper assembly, is applied in the situation of weft yarn traction yarn gripper.In this example, lever 10 also is to be formed by blank steel bend-forging, but its central portion 10c develops at vertical plane, but not a last embodiment is at horizontal plane.The 10 rotation places boring of the corresponding lever of central portion 10c, and local surfaces is subjected to cure process.Afterwards a hard metal axle bush 11 of one (with cutting technique production in the water, and not grinding) is embedded pivot block and moulding, and utilize brazing to be fixed in the pedestal.
Afterwards lever 10 is inserted the yarn gripper main bodys, and accurately between two parallel walls 12 that form its end, and utilize pin 13 and be fixed on the wall in the mode that can freely rotate.Pin 13 is also formed by the hard metal of one, and an end is connected with vertical connecting plate 14 end fusions.Plate 14 other end borings and utilization and pin 13 parallel safety screw connectors 15 are connected to a wherein wall 12 of yarn gripper main body; Therefore threaded connector 15 is suitably to separate for example 8～10mm with pin.
Above-mentioned arrangement can reach the present invention's purpose, that is prevents that the device of the fulcrum of truck dead lever 10 from hindering lever main body, thereby influences its size.In fact, according to the present invention, the fixation kit that comprises threaded connector 15 is with respect to the skew of lever 10 rotations, and its relative only is hard metallic pin 13, its diameter less (for example having only 2mm).Axle bush 11 pedestals thereby must look the function of small size pin 13 and sizing, and little more than the operating lever pedestal that adopts at present, and pedestal also must cover the retaining thread spare coaxial with the lever rotating dog.This measure is reduction operation lever size and total drag of not hindering lever significantly.In addition, the minification in the hole of the axle bush 11 of formation pedestal produces less stress to lever 10 main bodys, thereby prolongs its working life.
Of the present invention two specific preferred embodiments disclose, but significantly its protection purpose be not limited to these embodiment, and extensible to those skilled in the art be any possible variation, it is still within the scope of the present invention that aftermentioned application claim is given.
Claims (15)
1. a pair of weft yarn at loom transports and draws the lever of operating the weft yarn thread nipper assembly in the yarn gripper, lever (1; 10) fulcrum/suitable fixture of fulcrum utilization is fixed on the yarn gripper main body, it is characterized in that: described fixture (6; 15) sealing lever (1; The outside of circumferential surface 10).
2. lever as claimed in claim 1, it is characterized in that, fulcrum comprises a cylindrical cavity that is formed in the yarn gripper main body, the columnar portion (1c) of the lever of Pei Heing (1) cooperates with cylindrical cavity in mode free to rotate with it, and this cavity is with yarn gripper main body all-in-one-piece periphery (2) and utilize fixture (6) to be fixed between the relative periphery of the propulsive thrust piece (4) on the yarn gripper main body.
3. lever as claimed in claim 2 is characterized in that, the rotation of the periphery of yarn gripper main body (2) overlaps with the rotation of lever (1).
4. lever as claimed in claim 3 is characterized in that axis is a level.
5. lever as claimed in claim 2 is characterized in that, periphery (2) is formed in the base for supporting (S) of clamping components, and it is made by thermoplastic, and utilizes screw device to be fixed on the yarn gripper main body.
6. lever as claimed in claim 5 is characterized in that, propulsive thrust piece (4) is made with thermoplastic, and utilize the whole bearing pin (6) that passes propulsive thrust piece (4) be fixed on a pedestal of base for supporting (S) (3,3n) in.
7. lever as claimed in claim 6 is characterized in that, the pedestal of propulsive thrust piece (4) and base for supporting (S) are one-body molded, and comprise two parallel vertical walls (3), and the axis along bearing pin (6) is holed, and establishes side chimb (3n) on the top, with the last projection at lateral limitation propulsive thrust piece (4).
8. lever as claimed in claim 7 is characterized in that, the distance between the wall (3) is corresponding to the width of the central cylindrical portion (1c) of lever (1) and the width of propulsive thrust piece (4).
9. each lever of claim as described above, it is characterized in that, periphery (2) can allow surface (2) in bearing the maximum load that puts on the lever (1) under the indeformable situation with the start point minimum of yarn gripper main body one, and maximum can prevent that then surface (2) from hindering the rotation of lever (1).
10. lever as claimed in claim 9 is characterized in that, start point is between 70～90 °, and the best is about 80 °.
11. lever as claimed in claim 1 is characterized in that, fulcrum comprises that being hubbed at one on the lever (10) sells (13), and pin (13) is contained in the interior pedestal of yarn gripper main body, and an end of pin (13) is connected with fixture (15).
12. lever as claim 11, it is characterized in that, one end of pin (13) is fixed to perpendicular a plate (14) one ends, connecting plate (14) other end is established a hole, to cover by parallel with pin (13) and be combined in the formed fixture of a safety screw connector (15) in the yarn gripper main body.
13. the lever as claim 12 is characterized in that, the about 8～10mm of distance between pin (13) and the safety screw connector (15).
14. the lever as claim 11 is characterized in that it is made of metal, wherein the pivot block of pin (13) is subjected to the surface hardening processing.
15. the lever as claim 14 is characterized in that, pivot block covers by the hard metal axle bush of one (11), and this axle bush is with cutting technique manufacturing in the water and utilize brazing to be fixed on the pedestal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT002805A/1998 | 1998-12-23 | ||
| IT1998MI002805A IT1304699B1 (en) | 1998-12-23 | 1998-12-23 | LEVER TO OPERATE THE WEFT STAPLING DEVICES IN A PAIR OF CARRIER AND TRACTOR PLIERS FOR WEAVING FRAMES |
| IT002805A/98 | 1998-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1257946A true CN1257946A (en) | 2000-06-28 |
| CN1107752C CN1107752C (en) | 2003-05-07 |
Family
ID=11381329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99126168A Expired - Fee Related CN1107752C (en) | 1998-12-23 | 1999-12-15 | Lever for operating yarn gripping device in pair-of-weft yarn feeding and draw-off gripper for loom |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1013807A1 (en) |
| KR (1) | KR20000057084A (en) |
| CN (1) | CN1107752C (en) |
| HK (1) | HK1029381A1 (en) |
| IT (1) | IT1304699B1 (en) |
| TW (1) | TW571011B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101802281B (en) * | 2006-10-30 | 2011-08-31 | 泰克斯蒂尔玛股份公司 | Weft insertion apparatus for a gripper weaving machine |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1249527A1 (en) * | 2001-04-10 | 2002-10-16 | Promatech S.p.A. | Weft carrying gripper for weaving looms with progressive weft clamping |
| CN109844197B (en) * | 2016-09-14 | 2021-04-20 | 桑贾伊·库尔库特 | Weft clamping device for shuttleless loom |
| CN107881630B (en) * | 2017-12-14 | 2020-11-20 | 东华大学 | Rapier chuck for weaving carbon fiber expanded flat filament |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3390707A (en) * | 1965-05-20 | 1968-07-02 | Nuovo Pignone Spa | Weft-carrying mechanism for weaving looms having a continuous weftsupply mechanism |
| US3978897A (en) * | 1975-06-06 | 1976-09-07 | Rockwell International Corporation | Weft extending carrier |
-
1998
- 1998-12-23 IT IT1998MI002805A patent/IT1304699B1/en active
-
1999
- 1999-07-12 EP EP99113423A patent/EP1013807A1/en not_active Withdrawn
- 1999-07-17 TW TW088112175A patent/TW571011B/en not_active IP Right Cessation
- 1999-12-15 CN CN99126168A patent/CN1107752C/en not_active Expired - Fee Related
- 1999-12-22 KR KR1019990060126A patent/KR20000057084A/en not_active Application Discontinuation
-
2000
- 2000-12-28 HK HK00108477A patent/HK1029381A1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101802281B (en) * | 2006-10-30 | 2011-08-31 | 泰克斯蒂尔玛股份公司 | Weft insertion apparatus for a gripper weaving machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1107752C (en) | 2003-05-07 |
| EP1013807A1 (en) | 2000-06-28 |
| TW571011B (en) | 2004-01-11 |
| HK1029381A1 (en) | 2001-03-30 |
| KR20000057084A (en) | 2000-09-15 |
| IT1304699B1 (en) | 2001-03-28 |
| ITMI982805A1 (en) | 2000-06-23 |
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| C14 | Grant of patent or utility model | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |