CN101802281B - Weft insertion apparatus for a gripper weaving machine - Google Patents
Weft insertion apparatus for a gripper weaving machine Download PDFInfo
- Publication number
- CN101802281B CN101802281B CN2008801080364A CN200880108036A CN101802281B CN 101802281 B CN101802281 B CN 101802281B CN 2008801080364 A CN2008801080364 A CN 2008801080364A CN 200880108036 A CN200880108036 A CN 200880108036A CN 101802281 B CN101802281 B CN 101802281B
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- CN
- China
- Prior art keywords
- clamper
- jaw
- permanent magnet
- weft
- sliding rail
- 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.)
- Expired - Fee Related
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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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
The invention proceeds from a gripper weaving machine, along which the gripper (6, 8) can be moved to and fro from a receiving position for a weft thread (4) into a transfer position or from the transfer position into a delivery position for the weft thread (4), wherein the gripper (6, 8) has a thread clamp with a movable clamping jaw (44) and a further clamping jaw (46). The movable clamping jaw (44) is prestressed into the clamping position by means of a prestressing spring and can be opened by means of magnet devices (20, 22; 24, 26; 28, 30) along the sliding track. The movable clamping jaw (44) is arranged on a lever (40). In order to make the gripper more reliable and to prevent rebound, in particular, during operation, it is proposed, furthermore, to arrange a permanent magnet (50) on the lever (40), which permanent magnet (50) prevents the clamping jaw (44) from rebounding out of the clamping position by interaction with an attracting counter magnet (52).
Description
Technical field
The present invention relates to a kind of as claim 1 clamper that is used for gripper shuttle loom as described in the preamble.The invention still further relates to a kind of weft-thread insertion apparatus with respective clamp device.
Background technology
In gripper shuttle loom, weft yarn is introduced the shed open from a side by introducing clamper (bringer gripper) usually, transfers to extracting jaw at the shed open middle part usually then and holds device (fetcher gripper), and it is pulled out weft yarn from shed open.In this case, in two clampers, clamping element is formed in the yarn clamping head.Clamper moves along the induction element that is fixed to reed in this case.
EP-A-0690160 discloses a kind of weft-thread insertion apparatus, and wherein permanent magnet is set for clamping element and holds the calutron of the relative set of device and open or close yarn clamping head in a kind of controllable mode by being used to introduce clamper and extracting jaw on the induction element.Yet the problem of appearance is that the electromagnetic component on the induction element must be supplied electric energy in this case.This produces sizable shortcoming, accurately, has produced the guiding of service cable complicated on heat and the reed.Other shortcoming is control device must be set and connect this device, and in this case, the problem that the loom speed of raising must be handled synchronous appearance maybe must have complicated sensor mechanism.In addition, the possibility that proposes in EP-A-0690160 uses permanent magnet as the magnetic force application apparatus.Yet this paper proposes, these permanent magnets must be arranged on inlaid thread begin on the side the center of definitely pulling back near.Yet so simple single-point shifts and has been proved to be disadvantageous.
Comparatively speaking, EP-A-0990723 proposes a kind of scheme, and the clamper that wherein is equipped with permanent magnet guides between pair of permanent magnets, and consequently clamper is opened at this point.In EP-A-0990723, yet, along described sliding rail these permanent magnets are set and will be save in this case.
WO-A-99/60193 discloses a kind of clamper device, has wherein avoided the electromagnet of the complexity on the reed, and clamper all has electromagnetic actuators in either case, and it can open and close yarn clamping head.Also propose actuator at WO-A-99/60193 and comprise electromagnet, piezoelectric element or linear electric machine.
In addition, comprise two positive jaws that are arranged on the clamp body according to the known clamping device of prior art.In this case, weft yarn can be held between jaw.When weft yarn was introduced into the clamper extracting, weft yarn was transferred to extracting jaw from the introducing clamper and is held device; When weft yarn when extracting jaw is held device and is discharged, clamping device can be opened, so weft yarn is released.Open common motion and realize, so that weft yarn freely is positioned on the following jaw by upper gripper jaw.
From CH-A-556930 as can be known, design a kind of clamper that has removable hold assembly and anchor post, the soft elastic base that has the wear-resistant coating parts that float on it is arranged on the pillar.The form difference that proposes in CH-A-556930 is that coated component is held (clamping) by its shape itself and soft-elastic base, and can exchange and remove coating layer portion.Yet the form that CH-A-556930 proposes also has shortcoming.
When such clamping device is operated, know that very jaw can be by resilience, especially when a jaw is provided with elastic coating at closed period.Therefore its danger is that yarn can not also just can not be delivered by abundant clamping.
Summary of the invention
The objective of the invention is to improve the clamper device that gripper shuttle loom carries out inlaid thread that is used for of the described type of beginning, and guarantee that yarn obtains reliable delivery.
This purpose realizes by the described clamping device of claim 1.In this case, measurement result of the present invention is, as described in beginning, especially under highly frequent operational circumstances, jaw can be operated in free resilience, and consequently yarn is reliably gripped and carries.In addition, the production of clamper is also very simple and can accurately deliver, even under the situation of the high speed rotation of loom, also can guarantee low reliably defective and low wearing and tearing operation.
According to the favourable improvement of clamper of the present invention as described in the claim 2 to 5.
Basic feasible solution be that in clamper, two jaws are designed to movable.Yet if according to claim 2, in clamper, another jaw is designed to stationary jaw, and is simpler, thereby more favourable.
The design advantageous particularly part of clamper is, lever design becomes double-arm lever and by the installation that is rotatably connected, movable jaw is arranged on the lever arm, and is used to prevent that the permanent magnet that jaw comes out from the clip position resilience is arranged on another lever arm (claim 3).According to claim 4, in clamper, set-up spring is designed to torsionspring.
Another favourable improvement is clear and definite in claim 5.In this case, clamper has movably wedge device, and the traverse of opening of described movable jaw can be set by this wedge device.
Claim 6 is clear and definite uses clamper in weft-thread insertion apparatus according to the present invention.Its advantage is: the permanent magnet of holding in device and the sliding rail in transfer station at introducing clamper, extracting jaw is arranged to, the introducing clamper is parallel with the componental movement that extracting jaw is held device, make yarn to transfer to extracting jaw from the introducing clamper and hold device, the permanent magnet of sliding rail has attraction polarity with respect to the permanent magnet of clamper.
In this case, advantageously, the part of sliding rail is connected to reed (claim 7).
Favourable for carrying out inlaid thread in this case, promptly introduce clamper, extracting jaw holds device and the permanent magnet in the sliding rail of transfer station is arranged to, make during introducing clamper and extracting jaw and holding the parallel motion of device, introduce the yarn folder of clamper and open, extracting jaw is held the yarn folder of device and has been closed (claim 8).
In order further to strengthen effect and therefore can to improve feasible loom speed, in order to make up weft-thread insertion apparatus more reliably, advantageously, introduce clamper and extracting jaw and hold the permanent magnet that device all has two reversals of magnetism in either case, and the permanent magnet of two reversals of magnetism in either case all the sliding rail in picking position and the stop position arrange (claim 9).Be arranged between two permanent magnets of opposite orientation along the sliding rail in picking position and the stop position if magnetic is parallel to the permanent magnet of sliding rail orientation, this effect can further be strengthened (claim 10).
According to used in the present invention, above-mentioned that mention and the claimed and element described in the exemplary embodiment below; therefore be not limited to any certain conditions with regard to size, structure, material use and art designs, known choice criteria can unrestrictedly adopt in use field separately.
Description of drawings
The preferred embodiments of the present invention describe in detail by schematic diagram hereinafter.
Fig. 1 illustrates the schematic diagram of weft-thread insertion apparatus according to an exemplary embodiment of the present invention, and it has the introducing clamper and the extracting jaw that are positioned at before the reed and holds device;
Fig. 2 illustrates in greater detail the view according to clamper of the present invention, and it comprises according to extracting jaw shown in Figure 1 holds device;
Fig. 3 illustrates the view of the weft-thread insertion apparatus of optional form.
The specific embodiment
Fig. 1 illustrates the weft-thread insertion apparatus 2 that is used to introduce weft yarn 4 of the described gripper shuttle loom of preferred exemplary embodiment according to the present invention, and this weft-thread insertion apparatus has introducing clamper 6 and extracting jaw is held device 8.In the present invention, introduce clamper 6 and weft yarn 4 is pulled out from the picking position (pick-up position) outside the reed 4, be incorporated into the transferring position that approximately is in reed 10 middle parts by means of introducing clamping band 12.Extracting jaw is held device 8 and is held the middle part that probably moves to reed 10 with 14 by extracting jaw equally, takes away with the weft yarn that will be in the transferring position, and further transfers to the stop position (drop-off position) of reed opposite side.Introducing clamper band 12 and extracting jaw are held device band 14 and are held 18 drivings of device wheel by introducing clamper wheel 16 and extracting jaw respectively in this case.The diagram of Fig. 1 shows four permanent magnets in the clamper guiding device, say exactly, position when permanent magnet 20 is in and introduces clamper 6 and be positioned at the picking position, position when permanent magnet 22 is in and introduces clamper 6 and be positioned at transferring position, the position that permanent magnet 24 is in extracting jaw when holding device 8 and being positioned at transferring position, and permanent magnet 26 position when being in extracting jaw and holding device 8 and be positioned at stop position.Corresponding anti-magnet 28 and 30 is arranged on introducing clamper 6 and extracting jaw is held in the device 8, and therefore these anti-magnet also are designed to permanent magnet.
In this exemplary embodiment, extracting jaw is held device 8 and is shown specifically in Fig. 2, and it has clamp body 32, on the one hand, a stationary jaw 46 is set thereon; One device that is used for moving movable jaw 44 is set on the other hand.This device has double-arm lever 39, and an one lever arm 41 forms the movable jaw with attached rubber shock absorber 42.Another lever arm 40 roughly has and the holding magnet 50 that keeps retainer 52 to cooperate at its end.Described lever is pressed in advance by torsionspring 34 in the clip position of jaw, wherein transmits pressure and is applied on the lever arm 41, is applied in the exemplary embodiment a little on 36, and this point is roughly at the middle part of lever arm 41.Lever 39 is arranged in the transport zone of be rotatably connected two levers 40 of 48 and 41.
Then, move one that crosses in permanent magnet 24 and 26 if extracting jaw is held device 8, movably jaw 44 is opened, and so wherein permanent magnet 30 is attracted by corresponding permanent magnet 24 or 26.When described clamper moves through permanent magnet 24 or 26, movable jaw 44 is closed once more, and described yarn is held.For the resilience that prevents jaw and cause weft yarn loose during clamping thus, described magnet 50 is set, it can prevent because the bounce-back that its attraction causes with cooperating of retainer 52 of maintenance.In this exemplary embodiment, extracting jaw is held device 8 Wedge device movably also is set, and the traverse of opening of movable jaw can be set by this Wedge device.In this exemplary embodiment, introducing clamper 6 is held device 8 corresponding to extracting jaw and is built into.
The preferred implementation of weft-thread insertion apparatus is below described.Two clampers 6 and 8 are all guided in clamper guiding device 38 in either case, and the middle part of clamper guiding device is arranged on the reed 10.In primary importance, in the clamper guiding device, the zone that first permanent magnet 20 is provided with is the zone that weft yarn will be dropped in the picking position, is used to open the yarn folder of introducing clamper 6, so that weft yarn 4 is dropped into.In the transport zone of the approximate mid-section in inlaid thread zone, second permanent magnet 22 is used to open the yarn folder of introducing clamper 6 substantially, so that come off weft yarn and then transfer to extracting jaw and hold device 8.Permanent magnet 24 is arranged in the position on the right side slightly of Fig. 1, be used to open the yarn folder that extracting jaw is held device 8, introduce weft yarn 4 so that hold device 8 by extracting jaw, simultaneously, another permanent magnet 26 is illustrated in the right side of Fig. 1, be used to open the yarn folder that extracting jaw is held device 8, so that make weft yarn 4 be shed to the stop position of fabric edge.
In optional exemplary embodiment according to Fig. 3, described magnet is designed to have the form of enhancing power, wherein in either case, in introducing clamper 6 and extracting jaw hold permanent magnet 158 that the polarity in the device 8 makes progress or 162 and the downward permanent magnet 160 of polarity or 164 with hold the permanent magnet of the clamper guiding device of device 8 and make up 150 and be oppositely arranged in the permanent magnet combination 142 of the clamper guiding device that is used for introducing clamper 6 and being used for extracting jaw.In this case, permanent magnet is combined in and also comprises permanent magnet 144 that polarity makes progress or 152 and the downward permanent magnet 148 or 156 of polarity under arbitrary situation.Be parallel to the permanent magnet 146 and 154 of clamper 6 and 8 direction of motion orientations by polarity, the effect of permanent magnet combination 142 and 150 is further strengthened, wherein these permanent magnets 146 and 154 guiding magnetic flows.
Reference numeral
2 weft-thread insertion apparatus
4 weft yarns
6 introduce clamper
8 extracting jaws are held device
10 reed
12 introduce the clamper band
14 extracting jaws are held the device band
16 introduce the clamper wheel
18 extracting jaws are held the device wheel
Permanent magnet in the 20 clamper guiding devices is introduced the insertion position that clamper is in weft yarn
Permanent magnet in the 22 clamper guiding devices is introduced clamper and is in transferring position
Permanent magnet in the 24 clamper guiding devices, extracting jaw is held device and is in transferring position
Permanent magnet in the 26 clamper guiding devices, extracting jaw is held the stop position that device is in weft yarn
28 introduce the permanent magnet in the clamper
30 extracting jaws are held the permanent magnet in the device
32 clamp body
34 torsionsprings
36 pressure to the lever transmit
38 set wedge
39 levers
40 lever arms
41 lever arms
42 rubber absorbers
44 movable jaws
46 stationary jaws
Being rotatably connected of 48 lever arms
50 holding magnets
52 keep retainer
The clamper center is introduced in permanent magnet combination in the 142 clamper guiding devices
144 permanent magnets " on ", introduce the clamper center
146 permanent magnets " parallel " are introduced the clamper center
148 permanent magnet D scores are introduced the clamper center
Permanent magnet combination in the 150 clamper guiding devices, extracting jaw is held the device center
152 permanent magnets " on ", extracting jaw is held the device center
154 permanent magnets " parallel ", extracting jaw is held the device center
156 permanent magnet D scores, extracting jaw is held the device center
158 introduce clampers " on " in permanent magnet
160 introduce the permanent magnet in the clamper D score
162 extracting jaws hold device " on " in permanent magnet
164 extracting jaws are held the permanent magnet in the device D score
Claims (8)
1. weft-thread insertion apparatus (2) that is used for gripper shuttle loom, it has sliding rail and introducing clamper (6) and extracting jaw and holds device (8), wherein, described each clamper (6,8) move forward and backward along described sliding rail weft yarn (4) is moved to transferring position from the picking position, or weft yarn (4) moved to stop position from described transferring position, described each clamper (6,8) yarn that has with movable jaw (44) and another jaw (46) presss from both sides, described movable jaw (44) is pressed in clip position in advance and can be passed through magnet arrangement (20,22 by set-up spring; 24,26; 28,30) open along described sliding rail, described movable jaw (44) is arranged on the lever (39), it is characterized in that,
-also have one by preventing that with attracting cooperating of anti-magnet (52) described movable jaw (44) is arranged on the described lever (39) from the permanent magnet (50) of described clip position resilience, wherein, be used to open the magnet arrangement (20,22 of described yarn folder; 24,26) be arranged on picking position and stop position place along described sliding rail, and described magnet arrangement is designed to permanent magnet, wherein, described each clamper (6,8) opens by described each clamper (6,8) move through permanent magnet (20,22 along described sliding rail; 24,26) realize;
-introducing clamper (6), extracting jaw are held the permanent magnet (28,30 in device (8) and the sliding rail; 20,22,24,26) be provided with like this at described transferring position place, that is, weft yarn (4) can be transferred to described extracting jaw and holds device (8) from introducing clamper (6) by introducing partial parallel motion that clamper (6), extracting jaw hold device (8), wherein, the described permanent magnet (20 of described sliding rail, 22,24,26) with respect to described each clamper (6,8) permanent magnet (28,30) has attraction polarity;
-introducing clamper (6) and extracting jaw are held device (8) and are had two permanent magnets (158 that magnetic is opposite respectively, 160,162,164), and be provided with two permanent magnets (144 that magnetic is opposite in described picking position respectively with described stop position place along described sliding rail, 148,156,152).
2. weft-thread insertion apparatus as claimed in claim 1, it is characterized in that, between described two permanent magnets of the opposite orientation at described picking position and described stop position place, the permanent magnet (146,154) that a magnetic is parallel to described sliding rail orientation is being set respectively along described sliding rail.
3. weft-thread insertion apparatus as claimed in claim 1 or 2 is characterized in that, the part of described sliding rail is connected to reed (10).
4. weft-thread insertion apparatus as claimed in claim 1 or 2 is characterized in that, described introducing clamper (6), described extracting jaw are held the permanent magnet (28,30 in device (8) and the described sliding rail; 20,22,24,26) be provided with like this at described transferring position place, that is, make that the described yarn folder of described introducing clamper (6) is opened during described introducing clamper (6) and described extracting jaw are held the parallel motion of device (8), and described extracting jaw is held the described yarn folder of device (8) and is closed.
5. weft-thread insertion apparatus as claimed in claim 1 or 2 is characterized in that, described another jaw (46) of described each clamper is designed to stationary jaw respectively.
6. weft-thread insertion apparatus as claimed in claim 1 or 2, it is characterized in that, the lever of described each clamper (39) is designed to double-arm lever and installs by be rotatably connected (48), described movable jaw (44) wherein is set on a lever arm (41) respectively, and on another lever arm (40), is provided for preventing the described permanent magnet (50) of described movable jaw (44) from described clip position resilience.
7. weft-thread insertion apparatus as claimed in claim 1 or 2 is characterized in that, the described set-up spring of described each clamper is designed to torsionspring (34) respectively.
8. weft-thread insertion apparatus as claimed in claim 1 or 2 is characterized in that, described weft-thread insertion apparatus has a removable wedge shape device (38) on described each clamper, can set the traverse of opening of movable jaw (44) by this removable wedge shape device (38).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH17222006 | 2006-10-30 | ||
| PCT/CH2007/000427 WO2008052369A1 (en) | 2006-10-30 | 2007-08-28 | Weft thread infeed device for a gripper weaving machine |
| CHPCT/CH2007/00427 | 2007-08-28 | ||
| PCT/CH2008/000158 WO2009026732A1 (en) | 2007-08-28 | 2008-04-08 | Gripper and weft-thread insertion apparatus for a gripper weaving machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101802281A CN101802281A (en) | 2010-08-11 |
| CN101802281B true CN101802281B (en) | 2011-08-31 |
Family
ID=37831487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008801080364A Expired - Fee Related CN101802281B (en) | 2006-10-30 | 2008-04-08 | Weft insertion apparatus for a gripper weaving machine |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101802281B (en) |
| TW (1) | TW200825227A (en) |
| WO (1) | WO2008052369A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2388361A1 (en) * | 2010-05-18 | 2011-11-23 | Textilma AG | Gripper and weft thread insertion device for a rapier weaving machine |
| ITPD20110249A1 (en) * | 2011-07-21 | 2013-01-22 | Smit Textile S P A | TEXTILE FRAME WITH SINGLE CALIPER |
| EP2829646B1 (en) * | 2013-07-24 | 2017-09-06 | STÄUBLI BAYREUTH GmbH | Weft insertion system and weaving machine comprising such a system |
| DE102018222722B3 (en) * | 2018-12-21 | 2019-12-19 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | BRINGER GRIPPER HEAD, WEAVING MACHINE WITH SUCH A BRINGER GRIPPER HEAD AND METHOD FOR DOUBLE SHOT ENTRY |
| CN111364150B (en) * | 2020-02-24 | 2021-08-27 | 东华大学 | Double-side gripper for shuttles of rapier loom |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3801967C1 (en) * | 1988-01-23 | 1989-07-06 | Lindauer Dornier Gmbh, 8990 Lindau, De | Gripper head for weaving machines having a clamping device for the weft thread |
| CN1119681A (en) * | 1994-06-06 | 1996-04-03 | 株式会社丰田自动织机制作所 | Weft insertion method and apparatus for rapier loom |
| EP0990723A1 (en) * | 1998-09-30 | 2000-04-05 | Icbt Diederichs | Weft insertion device |
| CN1257946A (en) * | 1998-12-23 | 2000-06-28 | 索梅特纺织机械股份公司 | Lever for operating yarn gripping device in pair-of-weft yarn feeding and draw-off gripper for loom |
| CN1450218A (en) * | 2002-04-09 | 2003-10-22 | 吉维迪－意大利有限公司 | Yarn clamper for yarn feeder of rapier loom |
-
2007
- 2007-08-28 WO PCT/CH2007/000427 patent/WO2008052369A1/en active Application Filing
- 2007-09-03 TW TW96132675A patent/TW200825227A/en unknown
-
2008
- 2008-04-08 CN CN2008801080364A patent/CN101802281B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3801967C1 (en) * | 1988-01-23 | 1989-07-06 | Lindauer Dornier Gmbh, 8990 Lindau, De | Gripper head for weaving machines having a clamping device for the weft thread |
| CN1119681A (en) * | 1994-06-06 | 1996-04-03 | 株式会社丰田自动织机制作所 | Weft insertion method and apparatus for rapier loom |
| EP0990723A1 (en) * | 1998-09-30 | 2000-04-05 | Icbt Diederichs | Weft insertion device |
| CN1257946A (en) * | 1998-12-23 | 2000-06-28 | 索梅特纺织机械股份公司 | Lever for operating yarn gripping device in pair-of-weft yarn feeding and draw-off gripper for loom |
| CN1450218A (en) * | 2002-04-09 | 2003-10-22 | 吉维迪－意大利有限公司 | Yarn clamper for yarn feeder of rapier loom |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101802281A (en) | 2010-08-11 |
| WO2008052369A1 (en) | 2008-05-08 |
| TW200825227A (en) | 2008-06-16 |
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