CN1396323A - Weft supply injector of jet loom - Google Patents
Weft supply injector of jet loom Download PDFInfo
- Publication number
- CN1396323A CN1396323A CN 02141159 CN02141159A CN1396323A CN 1396323 A CN1396323 A CN 1396323A CN 02141159 CN02141159 CN 02141159 CN 02141159 A CN02141159 A CN 02141159A CN 1396323 A CN1396323 A CN 1396323A
- Authority
- CN
- China
- Prior art keywords
- weft yarn
- air
- carrier
- thread
- passage
- 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
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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
- D03D47/28—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
- D03D47/3013—Main nozzles
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
A deflective inflow portion 18 is formed at the forward end of a flow passage forming portion 141 of a thread guide 14. The deflective inflow portion 18 is formed by cutting the forward end portion of the flow passage forming portion 141 along a plane S obliquely intersecting the center axis line L of a weft passage 143. When forming the deflective inflow portion by cutting along the plane, the cutting is effected from the outlet 144 of the weft passage 143 toward the inlet 145 of the weft passage 143. The deflective inflow portion 18 is entirely surrounded by an air flow passage 16.
Description
Technical field
The weft yarn that the present invention relates in the air-jet loom transmits nozzle.
Background technology
In air-jet loom, deposit weft yarn and be used in the storing unit of the linear measure longimetry of weft yarn, measuring length, and stored weft yarn was measured to pull out the storing unit from weft length by the jet effect of weft yarn before the effect that weft yarn introduces takes place and is incorporated in the main burner.For the increase on the acquisition speed, this also is the advantage of air-jet loom, must increase the speed when carrying out the weft yarn introducing.Therefore from weft length measurement storing unit, pull out this weft yarn in must be during limiting.
The front end that disclosed penetrating in the yarn nozzle in the flat 9-21035 of Japanese Unexamined Patent Publication No, a plurality of otch are arranged on thread-carrier is to avoid the rapid diffusion of air-flow in air and the pipe that weft yarn mixes.Avoiding the purpose of the rapid diffusion of air-flow in air and the pipe that weft yarn mixes is in order to prevent turbulization.Prevent that turbulization from helping weft yarn to introduce the increase of speed.
In the common nozzle that does not have such otch, the flowing velocity that exports positive front at thread-carrier is minimum at the extended spot near the central axis of the weft yarn passage in the thread-carrier.This weft yarn is in the extended spot flight of the central axis of close weft yarn passage.That is, be not used for the flight of weft yarn effectively in the high speed part of the air-flow of the positive front of the outlet of this thread-carrier.
A plurality of otch in the flat 9-21035 of Japanese Unexamined Patent Publication No in the disclosed nozzle that penetrates yarn are along circumference and bilateral symmetry setting.Like this, the air from the weft yarn passage of otch inflow thread-carrier is a bilateral symmetry.Similarly in above-mentioned plain nozzle, the bilateral symmetry that enters the air-flow of weft yarn passage from otch makes that in the part near the extended line of the weft yarn channel center axis the thread-carrier be the air-flow part of a minimum speed.Therefore, in the flat 9-21035 of Japanese Unexamined Patent Publication No in the disclosed nozzle that penetrates yarn, can not expect that weft yarn introduces the obvious increase of speed.
Summary of the invention
The purpose of this invention is to provide one at the weft yarn transmission nozzle that has superiority aspect the increase weft yarn introducing speed.
According to the present invention, in order to obtain above-mentioned purpose, the weft yarn that is provided transmits nozzle and comprises the weft yarn passage that weft yarn is introduced into and leads, with a gas channel that makes air-flow flow to the weft yarn passage along the outer fringe surface of thread-carrier, this thread-carrier forms the weft yarn passage, this gas channel be extended with the weft path place of the overlapping weft yarn passage front of gas channel, the structure that has circular cross-section in the weft yarn passage in thread-carrier, and therein by from outlet side towards weft yarn feeder connection side cutting weft yarn passage, the deflection that forms an integral body flows into air-flow and partly is used for making the discharge area of thread-carrier weft yarn passage greater than the circular section area in the weft yarn passage.
The existence that deflection flows into the air-flow part has changed the speed part of the minimum of the air-flow that the extension line near the central axis of weft yarn passage in the positive front of the outlet of thread-carrier flows out.Promptly the high speed of the positive front air-flow of the outlet of thread-carrier partly enter into the weft yarn passage central axis extended line near the place, and partly be used for the flight of weft yarn in the high speed of the positive front air-flow of the outlet of thread-carrier.
Be used for by the diameter at the weft yarn passage of thread-carrier of weft yarn very little.Therefore need a very senior process technology to flow into the air-flow part to form a plurality of deflections that are positioned at the front end of thread-carrier by cutting.Forming whole deflection inflow air-flow part by cutting can relatively easily realize.
Description of drawings
Accompanying drawing comprises:
Figure 1A-1C shows the first embodiment of the present invention, and wherein Figure 1A makes side sectional view, and Figure 1B is the main part cross sectional view of amplifying, and Fig. 1 C is the main part perspective view that amplifies;
Fig. 2 is that the main part side sectional view of amplifying is to illustrate velocity flow profile of the present invention;
Fig. 3 is that the main part side sectional view of amplifying shows the second embodiment of the present invention;
Fig. 4 is that the main part side sectional view of amplifying shows the third embodiment of the present invention;
Fig. 5 is that the main part side sectional view of amplifying shows the fourth embodiment of the present invention; With
Fig. 6 is the velocity flow profile that the main part side sectional view of amplification shows prior art.
The specific embodiment
The first embodiment of the present invention is described now with reference to Fig. 1,2 and 6.
Shown in Figure 1A, a weft yarn transmits nozzle 11 and comprises cylinder nozzle body 12, cylinder thread-carrier 14 that is assemblied in 13, one of accelerating tubes and nozzle body 12 threaded engagement in the nozzle body 12 and one are used for thread-carrier 14 is fastened to lock-nut 15 on the nozzle body 12.
The fore-end of this thread-carrier 14 is configured as conical flow channel and forms part 141, and is provided with a plurality of location fin 142 along circumference in the middle of the formation part of flow channel.The tip of this location fin 142 contacts with the inner peripheral surface of this nozzle body 12.This accelerating tube 13 comprises the pedestal tube 131 and the light wall pipe 132 that is assemblied in the pedestal tube 131 that are assemblied in the nozzle body 12.The leading section that forms this flow channel formation part 141 of thread-carrier 14 enters into pedestal tube 131.Form at this flow channel of this thread-carrier 14 between the tapered inner peripheral surface of the outer fringe surface of part 141 leading sections and this pedestal tube 131 and formed an annular air-flow path 16.
In this nozzle body 12, formed a connector 121 so that are connected, be connected with an air supply pipe 17 with this connector 121 with these nozzle body 12 inside.The air that is provided by air supply pipe 17 flows through gas channel 16, pedestal tube 131 and light wall pipe 132.Weft yarn Y is through the weft yarn passage 143 of this thread-carrier 14 and the traction passage 133 in the accelerating tube 13.
Shown in Figure 1B and 1C, deflection flows into the leading section that air-flow part 18 is formed on the flow channel formation part 141 of this thread-carrier 14.Form this deflection by the leading section that forms part 141 along axis L plane inclined S cutting flow channel and flow into air-flow part 18 with respect to the weft yarn passage.In the planar S that this deflection inflow air-flow part 18 is arranged on to integral surface.This deflection inflow air-flow part 18 that forms along the planar S cutting is to cut towards the inlet 145 of weft yarn passage 143 from the outlet 144 of this weft yarn passage 143.Whole deflection flows into air-flow part 18 and is surrounded by gas channel 16.
The weft yarn passage 143 of thread-carrier 14 has the circular cross-section structure.Flow into the circular cross-sectional area of the area (the dash area area of Fig. 1 C) of air-flow part 18 by the guiding of cutting these weft yarn passage 143 formation along planar S greater than weft yarn passage 143.
The weft yarn passage 143 by thread-carrier 14 and the weft yarn Y of the traction passage 133 in the accelerating tube 13 are because air-flows in the traction passage 133 in the accelerating tube 13 of the front of the leading section of thread-carrier 14 and stressed.Composition links to each other with gas channel 16 and becomes the zone that has air-flow and weft yarn Y at the traction passage 133 of the weft path of weft yarn passage 143 fronts.
Advantage below this first embodiment provides:
(1-1) in Fig. 2, in gas channel 16, near the outlet of weft yarn passage 143, the arrow in the traction passage of the outlet front that faces weft yarn passage 143 has been indicated air velocity.Fig. 2 shows when the compressed-air actuated pressure of supplying with weft yarn transmission shower nozzle is 1 kg/cm, in first embodiment at gas channel 16, near the outlet of weft yarn passage 143, the distribution of the flow velocity in the traction passage 133 of the outlet front that faces weft yarn passage 143.In gas channel 16A, near the outlet of weft yarn passage 143A, the arrow in the traction passage 133A of the outlet front that faces weft yarn passage 143A indicated air velocity in Fig. 6.Fig. 6 shows when the compressed-air actuated pressure of supplying with weft yarn transmission shower nozzle 11 is 1 kg/cm, be not partial in the prior art that flows into air-flow part 18 at gas channel 16A, near the outlet of weft yarn passage 143A, the distribution of the flow velocity among the traction passage 133A in the pedestal tube 131A of the outlet front that faces weft yarn passage 143A.In Fig. 2 and this two figure of Fig. 6, suppose this weft yarn passage 143, the diameter of 143A obtains this velocity flow profile for several millimeter roughly by theoretical calculating.Arrow is long more in Fig. 2 and 6, and flow velocity is high more.Peak flow rate (PFR) is substantially equal to the velocity of sound.
Conventional weft yarn in Fig. 6 transmits among the nozzle 11A, be minimum over against the air velocity of the outlet front of thread-carrier 14A at the extended line near the axis L of the weft yarn passage 143A among the thread-carrier 14A.Is symmetrical around this air-flow of the outlet of thread-carrier 14A with respect to the outlet outer rim of this thread-carrier 14A.Most of air-flows from gas channel 16A to traction passage 133A are basically parallel to the inner peripheral surface of pedestal tube 131A.The directionality of such outflow is because in the symmetry of the column structure of the exit of thread-carrier 14A this thread-carrier 14A, the i.e. symmetry of the intramarginal gas channel 16A of the outlet of this thread-carrier 14A.
The weft yarn of Fig. 2 transmits in the nozzle 11, over against the air velocity of the outlet front of this thread-carrier 14 near minimum in the inner peripheral surface of pedestal tube 131.And this is very high near the air velocity in the extended line of the axis L of weft yarn passage 143.Is asymmetric around the air-flow of thread-carrier 14 with respect to the outer rim of the outlet of thread-carrier 14.The outflow of the air from gas channel 16 to traction passage 133 shows big directionality, and scope is partial to the direction of the direction of the planar S that flows into air-flow part 18 to the inner peripheral surface that is basically parallel to this pedestal tube 131 from being basically parallel to formation.This outflow directionality is because due to the existence of deflection inflow portion 18.
Deflection flows into the existence of air-flow part 18, in front over against the outlet of thread-carrier 14, the minimum speed part that makes air-flow near the extended line of the axis L of weft yarn passage 143 towards the inner peripheral surface displacement of pedestal tube 131, caused high velocity air to enter near the extended line of axis L.Therefore, be used for the flight of weft yarn Y effectively at this high velocity air, and obtained the improvement of weft yarn tractive force aspect over against the air-flow of the outlet front of thread-carrier 14.Therefore a weft yarn transmission nozzle that is having superiority aspect the increase that obtains weft yarn introducing speed can be provided.
(1-2) as shown in Figure 6, the leading section at thread-carrier 14A has produced an eddy current Q1 symmetrically.Spray when introducing similarly two weft yarns when alternately transmitting nozzle 11 from a pair of weft yarn, for being used for the standby yarn that weft yarn is introduced, offering this standby yarn that air that weft yarn transmits the pressure of nozzle 11 about 1 kg/cm introduces for use in weft yarn and can not transmitted nozzle 11 separation from weft yarn.In this case, eddy current Q1 that may symmetry has influenced unfriendly and has been used for the standby weft yarn Y that weft yarn is introduced, and in the filament yarn occasion, may take place not inweave and causes fault of weaving.
As shown in Figure 2, an eddy current Q2 produces at the leading section of thread-carrier 14.Yet the eddy current Q2 that produces is asymmetric.The difference of eddy current Q1 and eddy current Q2 is because deflection flows into the existence of air-flow part 18, and eddy current Q2 to the influence of the standby weft yarn that is used for weft yarn and introduces less than the influence of eddy current Q1 to the standby weft yarn that is used for weft yarn and introduces, even in the filament yarn situation, do not take place not inweave.
(1-3) generally speaking, the diameter of weft yarn passage 143 that is used to transmit the thread-carrier 14 of weft yarn Y is that several millimeters are little.Therefore when as when the disclosed yarn of the flat 9-21035 of Japanese Unexamined Patent Publication No forms a plurality of deflections that are positioned at the thread-carrier front end and flows into the air-flow part by cutting in by nozzle, need a very senior machining technique.On the contrary, forming whole deflection inflow air-flow part 18 by cutting can easily be realized.
(1-4) the deflection inflow air-flow part 18 that wherein forms by the leading section that cuts this thread-carrier 14 along planar S is the simplest so that cut out the structure of weft yarn passage 143 from the viewpoint that forms deflection inflow air-flow part 18.
In the present invention, second embodiment of Fig. 3, the 3rd embodiment of Fig. 4 and the 4th embodiment of Fig. 5 also are possible.
In second embodiment of Fig. 3, form a deflection by leading section and flow into air-flow part 19 so that do not cut out weft yarn passage 143 along integral surface S1 cutting thread-carrier 14.Among the 3rd embodiment in Fig. 4, form a deflection by leading section and flow into air-flow part 20 so that cut out weft yarn passage 143 along whole concave surface C1 cutting thread-carrier 14.In the 4th embodiment of Fig. 5, formed a deflection by leading section and flowed into air-flow part 21 so that cut out weft yarn passage 143 along whole convex surface C2 cutting thread-carrier 14.
Each deflection from second to the 4th embodiment flows into air-flow part 19-21 and is all surrounded by gas channel 16.
Claims (5)
1. the weft yarn in the air-jet loom transmits nozzle (11), it comprises that weft yarn (Y) introduces weft yarn passage (143) wherein and make air flow to the gas channel (16) of described weft yarn passage (143) along the outer fringe surface of thread-carrier (14), this thread-carrier (14) forms described weft yarn passage (143), described gas channel (16) is extended the weft path of described weft yarn passage (143) front and overlaps
The structure that wherein has circular cross-section at weft yarn passage (143) described in the described thread-carrier (14), and for the area of the exit portion that makes the described weft yarn passage (143) in described thread-carrier (14) area greater than circular cross section, formed an integral body deflection and flowed into air-flow part (18 by cutting towards entrance side (145) from the outlet side (144) of described weft yarn passage (143), 19,20,21).
2. the weft yarn in the air-jet loom according to claim 1 transmits nozzle, and wherein, described whole deflection flows into air-flow part (18,19,20,21) and is arranged in the integral surface.
3. the weft yarn in the air-jet loom according to claim 2 transmits nozzle, wherein, described whole deflection flows into air-flow part (18,19,20,21) be by along (S S1) cuts the leading section of described thread-carrier (14) and forms with a plane of central axis (L) oblique of described weft yarn passage (143).
4. the weft yarn in the air-jet loom according to claim 3 transmits nozzle, wherein, described whole deflection flows into air-flow part (18,19,20,21) be by forming so that cut out described weft yarn passage (143) along cutting the leading section of described thread-carrier (14) with described plane (S).
5. the weft yarn in the air-jet loom according to claim 2 transmits nozzle, wherein, described whole deflection flows into air-flow part (18,19,20,21) be by along (C1 C2) cuts the leading section of described thread-carrier (14) and forms with a curved surface of central axis (L) oblique of described weft yarn passage (143).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001210823A JP4461650B2 (en) | 2001-07-11 | 2001-07-11 | Weft yarn transfer nozzle in air jet loom |
| JP210823/01 | 2001-07-11 | ||
| JP210823/2001 | 2001-07-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1396323A true CN1396323A (en) | 2003-02-12 |
| CN1229531C CN1229531C (en) | 2005-11-30 |
Family
ID=19046234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02141159 Expired - Lifetime CN1229531C (en) | 2001-07-11 | 2002-07-08 | Weft supply injector of jet loom |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1275760B1 (en) |
| JP (1) | JP4461650B2 (en) |
| CN (1) | CN1229531C (en) |
| DE (1) | DE60217443T2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135080B (en) * | 2006-08-31 | 2011-01-12 | 津田驹工业株式会社 | Pick-blowing nozzle for fluid jet loom |
| CN101074513B (en) * | 2006-05-17 | 2011-04-06 | 株式会社丰田自动织机 | Picking device for air weaving loom |
| CN107986078A (en) * | 2017-11-15 | 2018-05-04 | 李天合 | A kind of counting of printing packaging equipment, blow mark and divide stacking device and method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112553752B (en) * | 2020-12-17 | 2022-04-26 | 苏州新东南纺织科技有限公司 | Jet loom nozzle |
| JP2023079307A (en) | 2021-11-29 | 2023-06-08 | 株式会社豊田自動織機 | Weft transfer nozzle in air-jet loom |
| JP2023183167A (en) * | 2022-06-15 | 2023-12-27 | 株式会社豊田自動織機 | Weft conveying nozzle of air-jet loom |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH610366A5 (en) * | 1976-09-27 | 1979-04-12 | Rueti Ag Maschf | Device for inserting weft threads into a shed |
| DE2911862A1 (en) * | 1979-03-13 | 1980-09-25 | Sulzer Ag | NOZZLE ARRANGEMENT FOR A WEAVING MACHINE WITH BEAM ENTRY |
| JPS5771445A (en) * | 1980-10-15 | 1982-05-04 | Nissan Motor | Wefting nozzle of air jet type loom |
| CS249259B1 (en) * | 1983-08-01 | 1987-03-12 | Frantisek Vykydal | Pick insertion device for jet loom |
| DE19511439C1 (en) * | 1995-03-29 | 1996-03-14 | Dornier Gmbh Lindauer | System to increase productivity of jet loom |
-
2001
- 2001-07-11 JP JP2001210823A patent/JP4461650B2/en not_active Expired - Fee Related
-
2002
- 2002-07-08 CN CN 02141159 patent/CN1229531C/en not_active Expired - Lifetime
- 2002-07-08 EP EP20020014943 patent/EP1275760B1/en not_active Expired - Lifetime
- 2002-07-08 DE DE2002617443 patent/DE60217443T2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074513B (en) * | 2006-05-17 | 2011-04-06 | 株式会社丰田自动织机 | Picking device for air weaving loom |
| CN101135080B (en) * | 2006-08-31 | 2011-01-12 | 津田驹工业株式会社 | Pick-blowing nozzle for fluid jet loom |
| CN107986078A (en) * | 2017-11-15 | 2018-05-04 | 李天合 | A kind of counting of printing packaging equipment, blow mark and divide stacking device and method |
| CN107986078B (en) * | 2017-11-15 | 2019-10-25 | 李天合 | A kind of counting of printing packaging equipment blows mark and divides stacking device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE60217443D1 (en) | 2007-02-22 |
| EP1275760A3 (en) | 2004-01-14 |
| JP2003020543A (en) | 2003-01-24 |
| CN1229531C (en) | 2005-11-30 |
| EP1275760B1 (en) | 2007-01-10 |
| DE60217443T2 (en) | 2007-08-23 |
| JP4461650B2 (en) | 2010-05-12 |
| EP1275760A2 (en) | 2003-01-15 |
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Legal Events
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20051130 |
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| CX01 | Expiry of patent term |