EP0016021A1 - Device for inserting the weft by means of a fluid in a loom. - Google Patents
Device for inserting the weft by means of a fluid in a loom.Info
- Publication number
- EP0016021A1 EP0016021A1 EP79900605A EP79900605A EP0016021A1 EP 0016021 A1 EP0016021 A1 EP 0016021A1 EP 79900605 A EP79900605 A EP 79900605A EP 79900605 A EP79900605 A EP 79900605A EP 0016021 A1 EP0016021 A1 EP 0016021A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- lamellae
- thread
- reed
- plane
- 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
- 239000012530 fluid Substances 0.000 title claims description 6
- 241000446313 Lamella Species 0.000 claims description 28
- 235000014676 Phragmites communis Nutrition 0.000 claims description 19
- 238000003780 insertion Methods 0.000 claims description 13
- 230000037431 insertion Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
- KKEBXNMGHUCPEZ-UHFFFAOYSA-N 4-phenyl-1-(2-sulfanylethyl)imidazolidin-2-one Chemical compound N1C(=O)N(CCS)CC1C1=CC=CC=C1 KKEBXNMGHUCPEZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000009941 weaving Methods 0.000 description 13
- 230000002349 favourable effect Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 238000007654 immersion Methods 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 101150082998 pi gene Proteins 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
- D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
- D03D47/3006—Construction of the nozzles
- D03D47/302—Auxiliary nozzles
Definitions
- the invention relates to a method for weft insertion on weaving machines by means of a fluid by guiding and driving the weft thread in the shed in a channel formed from lamellae.
- Known devices for carrying out such methods in which the slats forming the filament flight channel are firmly connected to the drawer and have no parts which move relative to one another, have a channel with a flat design and a diagonal cross section with a larger channel towards the reed side O-opening (DE-OS 26 22 148, DE-AS 26 08 030).
- This narrowing in its vertical distance away from the plane of the reed, which ends with a curve and ends with a rounding, offers an optimal weft thread transport for the fluid flow from a weaving section, in conjunction with the favorable, unwinding nozzle feed low energy consumption.
- the weaving speeds that can be achieved in this way are limited in the speed of the devices required for forming the shed, so that it is necessary to reduce the lifting height of the shed as the speed of the shedding device increases in order to reduce the inertial forces.
- the known flat thread guide channel used should not be directed diagonally upwards in its cross-sectional position, but should be parallel to the warp threads with the shed closed.
- the overall height of the lamella channel would be reduced in such a way that the shed could also be significantly reduced and higher speed could be achieved.
- the slats emerging with the upper compartment closed when the compartment was closed Do not offer any surface for the weft thread, but always allow it to emerge smoothly from the channel regardless of the height of the fabric plane.
- the object of the invention is on, even at a der ⁇ art parallel to the warp threads in 'closed shed Lie constricting channel trouble-free secure immersion in the warp threads of the lower thread to be found.
- each individual lamella is immersed once in the warp thread array of the lower shed, the upper lamella leg dividing the warp threads and, due to its shape, this division via the rounding that closes the channel further to the foot of the lamella inevitably at a favorable contact angle with the warp thread ⁇ is pulled.
- a thread guide channel is formed which is open to the reed, so that the weft thread entered can reach the reed and in which the thread flight on the underside of the channel is limited by other slats is considered to be on the top of the channel and the lamellae which form the lower envelope surface penetrate the warp threads in other places than the lamellae which form the upper envelope surface.
- the subject invention provides for the applicational two front in mingled arranged different slats forms.
- this second lamella shape can be kept smaller, since it has no flow-guiding task, but in particular forms the flow shadow for the warp threads resting on the 5 nozzle feeds and has to protrude above the nozzles with their continuous feeds.
- each slat divides the warp threads only once in each weaving cycle or, in the area of one of the two slat forms, they are only ever divided by one slat once for the respective weft insertion process, so that crossing over within the thread guide channel is impossible and therefore no entry errors can be triggered.
- a device for carrying out the method is thus characterized in that a thread guide channel is formed from upper lamellae and lower lamellae, the upper and front envelope surface being created by the upper lamellae and the lower and possibly also front envelope surface being created by the lower lamellae, whereby • Furthermore, the channel on the web page and open on the.
- impurities from fiber fly, etc. is particularly favored at those places where irregular flow changes in the lower envelope surface of the lamella channel result in increased flow vortices.
- the flow outlet opening is located in a plane which is perpendicular to the channel axis and which lies in the region of a vertical expansion of the channel opening on the blade side.
- the flow outlet openings with their feeds are arranged outside the lamella comb, so that in the area between the lamellae in which the warp threads are there is no fiber fly, because it is free of other bodies. Even the fiber fly that may result from the support of the warp threads on the feeds arises outside and can no longer get stuck between the lamellae.
- the shape of the envelope surface formed from the lower lamellae receives a continuous course with reduced flow eddies. This avoids the previously existing places in the lower envelope surface with discontinuous changes in shape and susceptibility to contamination. At the same time, the exit jet gains a better bundled, further reaching transport and guiding effect on the weft thread due to reduced flow eddies.
- the invention offers a further advantage in that the flow outlet openings with their feeds are arranged separately from the lamella comb and from the sley and can be easily changed in an adjusted state.
- FIG. 1 shows a side view of the device for weft insertion for carrying out the method according to the invention
- FIG. 2 shows a front view of the arrangement according to FIG. 1;
- FIGS. 1 and 2 shows a top view of the arrangement according to FIGS. 1 and 2;
- FIG. 4 shows a side view of the device in a weaving machine in the position of the weft and as section A - A according to FIG. 5;
- FIG. 5 shows a rear view according to FIG. 4 from the reed side
- FIG. 6 is a top view according to FIG. 5;
- FIG. 7 shows a side view of the device in a weaving machine in the position of the weft insertion and as section BB according to FIG. 8;
- FIG. 9 is a plan view according to FIG. 8.
- a sley 1 with a reed 2 is moved in a circle such that it is firmly connected to the sley 1
- the thread guide channel 7 formed from lamellae 6 and 19 carries nozzles 14 which are arranged at intervals over the weaving width and pass over the feed lines
- the nozzles 14 in the lamellae 6 and 19 with flow exit direction 15 have a rectilinear feed 13 in multiple lengths of the value of the nozzle bore 14, so that the arrangement thereof towards the side of the reed 2 through the lower ones
- the warp threads of the lower compartment 4 rest on the feeds 13 and lie in the flow shadow of the lamella leg parts projecting above the feeds 13, whereby contact between weft and warp threads is avoided.
- the thread guide channel 7 consisting of slats 6 which also carry the rounding that closes the channel 7 and form the predominant thread guide, and consists of smaller, thinner slats 19 lying between them, so that the two different, for example alternately arranged slat shapes 6, 19 always share warp threads that are sufficiently separated for immersion .
- the divided warp threads 3 can thus slide freely on the slats 19, as well as on the slats 6, at a favorable angle 18 up to the slat foot or support on feed 13.
- the thickness of the slats 19 can be kept thinner than that of the slats 6 and therefore the displaced volume of warp threads 3 . 4 is not raised.
- the slats 19 have in particular to produce the flow shadow for the warp threads 4 resting on the feeds 13, so that contact between warp threads and weft threads is avoided.
- FIGS. 4 and 7 A weaving machine can be seen from FIGS. 4 and 7 with the sley 1 ', which is mounted at 10' and describes the curve 22 ', the reed 2', the shafts 9 ', which are connected to the warp threads 3', 4 ' form the shed 5 'and the thread guide channel 7', 8 'which is pivoted by screws 21' with the sley 1 'and consists of upper slats 6', 16 'and lower slats 17', 18 ', 19' and slat foot 20 '.
- FIG. 4 also shows the section AA from FIG. 5
- FIG. 7 shows the section BB from FIG. 8.
- O PI gene 14 ' with its various executable feeds ' 13', 23 ', 24 ", 25', leading through the shutter rail 1 ', shown as separated from the lamella comb 6', 19 ', 20', near the leaf side Opening the channel 7 'let the 5 exit jet 15' act on the weft thread in the direction "of the main channel axis 8 '.
- the feeds 13 ', 3' carry the current outlet openings 14 'in such a way that they lie in the area of the material thickness of a lamella 6', 16 'or 17', 19 '.
- the feeds 13 ', 23' allow the flow outlet opening 14 'to be designed to be particularly streamlined and to have a multiple length of the cross section of the opening 14'.
- the designs of the feed lines 24 ', " 25' do not have this optimally favorable shape, the feed 24 'not requiring a shed level 12 *.
- the feeders 26 ', 28' and 30 'shown in FIGS. 7, 8 and 9 are, for example, in a separate carrier
- the lower lamellae 19 ' have a uniform curvature on the side directed towards the weft thread stop.
- these have different heights and form these lower lamellae 19' according to shape 17 'a vertical narrowing of the channel 7' on the leaf side, whereupon the arrangement of such according to shape 18 'results in a vertical expansion of the leaf-side channel opening 7 'follows.
- the flow outlet openings 14 ' are arranged in the direction of entry behind the lower lamella shape 17' or between shapes 17 'and 18' and are thus in the region of a vertical expansion of the leaf-side channel opening, which means that the arrangement of the opening 14 'is almost as well is possible in the same plane with the lower lamella 17 ', since the unimpeded effect of the exit jet 15' is primary for the description of the device.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
Abstract
Ce dispositif monte dans un metier, comprend un conduit de guide-fil (7) compose de lamelles superieures (6) et inferieures (19). Ce conduit (7) est ouvert du cote du peigne (2) pour que le fil de trame lance puisse atteindre le peigne (2). La trajectoire du fil est limite du cote inferieur du conduit (7) par d'autres lamelles que du cote superieur. Les lamelles qui forment la surface enveloppante inferieure, penetrent la chaine en d'autres endroits que les lamelles qui forment la surface enveloppante superieure.This device, mounted in a loom, comprises a wire guide conduit (7) composed of upper (6) and lower (19) slats. This conduit (7) is open on the side of the comb (2) so that the lanced weft thread can reach the comb (2). The trajectory of the wire is limited on the lower side of the conduit (7) by other slats than on the upper side. The lamellae which form the lower enveloping surface penetrate the chain in places other than the lamellae which form the upper enveloping surface.
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2825679A DE2825679C2 (en) | 1978-06-12 | 1978-06-12 | Device for weft insertion on weaving machines by means of a flowing medium |
DE2825679 | 1978-06-12 | ||
DE2919026 | 1979-05-11 | ||
DE19792919026 DE2919026A1 (en) | 1979-05-11 | 1979-05-11 | Guide for weft inserted by propelling jets - formed as open channel by differing upper and lower dents |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0016021A1 true EP0016021A1 (en) | 1980-10-01 |
EP0016021B1 EP0016021B1 (en) | 1983-11-23 |
Family
ID=25774686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP79900605A Expired EP0016021B1 (en) | 1978-06-12 | 1980-01-29 | Device for inserting the weft by means of a fluid in a loom |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0016021B1 (en) |
CS (1) | CS220788B2 (en) |
GB (1) | GB2037333B (en) |
IT (1) | IT1125356B (en) |
NL (1) | NL7904374A (en) |
WO (1) | WO1980000087A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0039741A1 (en) * | 1980-05-08 | 1981-11-18 | Walter Scheffel | Loom with weft insertion by fluid means |
FR2534603A1 (en) * | 1982-10-14 | 1984-04-20 | Alsacienne Constr Mat Tex | DEVICE FOR FAVORING THE INSERTION OF THE FRAME WIRE ON A WEAVING |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH465521A (en) * | 1967-12-08 | 1968-11-15 | Sulzer Ag | Guide device for the weft thread insertion element of a weaving machine |
CS165002B1 (en) * | 1970-09-18 | 1975-11-28 | ||
CS149198B1 (en) * | 1971-07-27 | 1973-05-24 |
-
1979
- 1979-06-05 NL NL7904374A patent/NL7904374A/en not_active Application Discontinuation
- 1979-06-07 CS CS793921A patent/CS220788B2/en unknown
- 1979-06-12 IT IT23481/79A patent/IT1125356B/en active
- 1979-06-12 GB GB8004177A patent/GB2037333B/en not_active Expired
- 1979-06-12 WO PCT/CH1979/000087 patent/WO1980000087A1/en unknown
-
1980
- 1980-01-29 EP EP79900605A patent/EP0016021B1/en not_active Expired
Non-Patent Citations (1)
Title |
---|
See references of WO8000087A1 * |
Also Published As
Publication number | Publication date |
---|---|
IT7923481A0 (en) | 1979-06-12 |
GB2037333B (en) | 1982-11-17 |
EP0016021B1 (en) | 1983-11-23 |
IT1125356B (en) | 1986-05-14 |
WO1980000087A1 (en) | 1980-01-24 |
NL7904374A (en) | 1979-12-14 |
GB2037333A (en) | 1980-07-09 |
CS220788B2 (en) | 1983-04-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Designated state(s): FR |
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17P | Request for examination filed | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SCHEFFEL, WALTER Owner name: PETSCHNER, GOETZ |
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GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
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AK | Designated contracting states |
Designated state(s): FR |
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ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
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26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19841211 Year of fee payment: 6 |
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PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19880226 |
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