CN105986351A - Weft insertion control method and weft insertion apparatus in air jet loom - Google Patents
Weft insertion control method and weft insertion apparatus in air jet loom Download PDFInfo
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- CN105986351A CN105986351A CN201610148654.8A CN201610148654A CN105986351A CN 105986351 A CN105986351 A CN 105986351A CN 201610148654 A CN201610148654 A CN 201610148654A CN 105986351 A CN105986351 A CN 105986351A
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- air
- jet
- weft yarn
- main burner
- auxiliary
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- 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
- D03D47/3026—Air supply systems
- D03D47/3033—Controlling the air supply
- D03D47/304—Controlling of the air supply to the auxiliary nozzles
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- 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
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- Textile Engineering (AREA)
- Looms (AREA)
Abstract
The present invention relates to a weft insertion control method and a weft insertion apparatus in an air jet loom. Provided is a method for controlling weft insertion in an air jet loom comprising a plurality of main nozzles arranged side by side in a forward and backward direction of the air jet loom; a reed disposed in the downstream of the main nozzles relative to the weft insertion direction of the air jet loom and mounted to a sley; and a plurality of sub nozzles arranged along a weft insertion passage. The reed has a recessed weft insertion passage. The sub nozzles comprise a first sub nozzle closest to the main nozzles and a plurality of second sub nozzles closest to the main nozzles. The method further comprises setting jetting pressure of the first sub nozzle to be lower than jetting pressure of the second sub nozzles when weft insertion is performed by at least one main nozzle of the main nozzles closest to a cloth fell.
Description
Technical field
The present invention relates to method and the weft insertion device for controlling weft yarn insertion in method air-jet loom.
Background technology
There is a kind of known air-jet loom, wherein weft yarn inserts path by inserting the weft yarn of the front side that the air insertion of main burner blowout is formed at reed from weft yarn, and sequentially inserts the path air conveying weft yarn with multiple auxiliary wefts insertion nozzle injection of given interval configuration by means of from along weft yarn.In the air-jet loom with multiple main burner, the wall surface that main burner inserts path relative to weft yarn is arranged with angle different from each other.
Japanese Unexamined Patent Application H02-41440 publication discloses the weft insertion device in a kind of jet loom, comprising: weft yarn inserts main burner, it is disposed towards weft yarn and inserts the wall surface of path；Inserting nozzle with the first auxiliary weft, it is arranged adjacently to weft yarn and inserts main burner.Weft yarn inserts the weft yarn Insertion action of main burner and is continued by the first auxiliary weft insertion nozzle.In the weft insertion device of this publication, the conveying active force that the first auxiliary weft inserts in the weft yarn insertion effective coverage of nozzle is set higher than the conveying active force in the weft yarn insertion effective coverage of other auxiliary weft any insertion nozzle.Especially, in insert the path configuration with the given spaced multiple auxiliary wefts insertion nozzle including the first auxiliary weft insertion nozzle along weft yarn, additional auxiliary weft inserts nozzle and is arranged adjacent to the first auxiliary weft insertion nozzle, and described first auxiliary weft inserts nozzle and is arranged adjacently to be positioned at the weft yarn insertion path of main burner side.Therefore, the conveying to weft yarn act on first auxiliary weft insert nozzle weft yarn conveying effective coverage in strengthened.Therefore, though weft yarn and weft yarn insert the wall surface of path come in contact and by resistance in the case of, also ensure that weft yarn inserts necessary conveying active force.
According to the weft insertion device disclosed in Japanese Unexamined Patent Application H02-41440 publication, additional auxiliary weft inserts nozzle and is arranged adjacently to the first auxiliary weft insertion nozzle, in order to strengthen weft yarn conveying effect.But, have in the air-jet loom of multiple main burners of polychrome braiding, configuration based on main burner, weft yarn may insert path by deviation weft yarn.Especially, by tending to deviateing easily from the weft yarn being arranged on the fell side of loom or the air near fell side and away from the main burner of reed is inserted.It is believed that, the reason that this deviation occurs is, merge with the air inserting nozzle from the first auxiliary weft from the air being positioned at fell side thus blow out relative to the main burner that the bottom surface of weft yarn insertion path is larger angle, and the weft yarn inserted is guided the open sides being positioned at fell side inserting path to weft yarn by merging of air, result is that the weft yarn inserted inserts path deviation from weft yarn easily.
The present invention relates to the weft insertion device in the method controlling weft yarn insertion and loom in air-jet loom, its weft yarn being prevented from having inserted inserts path deviation from weft yarn.
Summary of the invention
According to an aspect of the present invention, it is provided that a kind of for controlling the method that weft yarn in air-jet loom inserts, described air-jet loom includes: multiple main burners, it is arranged side-by-side along direction before and after air-jet loom；Reed, it is arranged on the downstream of main burner relative to the weft yarn direction of insertion of air-jet loom, and installs to slay；With multiple auxiliary jets, it inserts via configuration along weft yarn.Reed has recessed weft yarn in its front surface and inserts path.Auxiliary jet includes near the first auxiliary jet of main burner with not near multiple second auxiliary jets of main burner.The method inserted for controlling weft yarn in air-jet loom farther includes: a main burner near fell carries out weft yarn when inserting at least by main burner, and the expulsion pressure of the first auxiliary jet is set at less than the expulsion pressure of the second auxiliary jet.
According to a further aspect in the invention, it is provided that the weft insertion device in a kind of air-jet loom, comprising: multiple main burner, it is arranged side-by-side along direction before and after air-jet loom；Reed, it is arranged on the downstream of main burner relative to the weft yarn direction of insertion of air-jet loom, and installs to slay；Multiple auxiliary jets, it inserts via configuration along weft yarn；With multiple secondary valves, it is connected to auxiliary jet.Reed has recessed weft yarn in its front surface and inserts path.Auxiliary jet includes near the first auxiliary jet of main burner with not near multiple second auxiliary jets of main burner.Second auxiliary jet is divided into multiple groups.Secondary valve includes the first secondary valve and the multiple second secondary valve, and the first auxiliary jet is connected to the first secondary valve.Each group the second auxiliary jet is connected to the corresponding second secondary valve.Each group auxiliary jet is connected to the first secondary tank by the corresponding second secondary valve.Weft insertion device includes controlling device, it controls the first secondary valve and the second secondary valve, and a main burner near fell carries out weft yarn when inserting at least by main burner, controls device and controls the first secondary valve so that the expulsion pressure of the first auxiliary jet is less than the expulsion pressure of the second auxiliary jet.
From the following description combining the principle that accompanying drawing is illustrated by way of example the present invention, other aspects and advantages of the present invention will be clear from understanding.
Accompanying drawing explanation
Fig. 1 is perspective schematic view, it is shown that the structure of the weft insertion device in air-jet loom according to a first embodiment of the present invention；
Fig. 2 is the partial top view of the operation of the weft insertion device in the air-jet loom of explanatory diagram 1；
Fig. 3 is block diagram, it is shown that the connection of the air hose of the weft insertion device of Fig. 1；
Fig. 4 is flow chart, it is shown that the control flow of the weft insertion device in the air-jet loom of Fig. 1；
Fig. 5 is coordinate diagram, it is shown that the change that the pressure of the auxiliary jet of the weft insertion device in the air-jet loom of Fig. 1 elapses in time；And
Fig. 6 is block diagram, it is shown that the connection of the pipe of the weft insertion device in air-jet loom according to a second embodiment of the present invention.
Detailed description of the invention
First embodiment
The weft insertion device of the air-jet loom of first embodiment of the invention is described referring now to Fig. 1-5.With reference to Fig. 1, reference 10 is indicated generally by the weft insertion device in air-jet loom, comprising: one group of main burner 11, it includes multiple main burner 11A～11F；Orifice holder 12, it keeps main burner group 11；With main support 14, it is fixed to the slay (slay) 13 of air-jet loom.Slay 13 extends along the width of air-jet loom.Reed 15 is fixedly mount to slay 13.In the linguistic context of this specification, it is referred to as the width of air-jet loom by the bearing of trend of slay 13 shown in the four-headed arrow of mark about band in FIG, and is referred to as direction before and after air-jet loom by the direction that the bearing of trend with slay 13 shown in the four-headed arrow of mark before and after band is vertical.In this air-jet loom, weave cotton cloth and be taken up in the front side of air-jet loom, and warp thread is sent towards the rear side of air-jet loom.
Main burner group 11 is kept by the orifice holder 12 of the left end being arranged on slay 13.Each main burner 11A～11F is supplied to single weft yarn, and a total of six roots of sensation weft yarn inserts from six main burners of main burner group 11.Three main burners 11A, 11B and 11C are arranged side by side into so that main burner 11A is positioned at rear side along direction before and after air-jet loom, and main burner 11B is positioned at middle part, and main burner 11C is positioned at the front side of air-jet loom.In three main burner 11A～11C, main burner 11C is aligned closest to be positioned at the fell (cloth fell) of the (not shown) of weaving cotton cloth of the front side of air-jet loom.As shown in Figure 2, main burner 11A～11C is arranged to extend with inserting path 21 convergence towards the weft yarn that will be explained below.Its excess-three main burner 11D, 11E be arranged to 11F along air-jet loom identical before and after direction in the extension immediately below of corresponding main burner 11A, 11B and 11C, main burner 11D is made to be positioned at the rear side of air-jet loom, main burner 11E is positioned at the middle part of air-jet loom, and main burner 11F is positioned at the front side of air-jet loom.In three main burner 11D～11F, main burner 11F is aligned closest to be positioned at the fell of the (not shown) of weaving cotton cloth of the front side of air-jet loom.Main burner 11D, 11E and 11F are also configured to insert path 21 towards weft yarn and extend with assembling.
Main support 14 includes: former nozzle keeper 12, and it keeps main burner 11A～11F；With installation portion 16, it extends along the length direction (or width) of slay 13 from orifice holder 12.Orifice holder 12 and installation portion 16 form.Installation portion 16 is assemblied in the mounting groove 13A being formed in slay 13, and is fixed to slay 13 by bolt (not shown).
Orifice holder 12 substantially rectangular shape, and main burner 11A～11F extend to the right from the right vertical plane of orifice holder 12.As shown in Figure 2, orifice holder 12 has six bullports 17 passed therethrough, and weft yarn Y leads to main burner 11A～11F by described bullport 17.Weft yarn Y is from weft feeder (not shown) supply to corresponding main burner 11A～11F.Pipe 29 is connected to the left part of main burner keeper 12 so that pipe 29 is connected with main burner 11A～11F by orifice holder 12, with the supply compressed air to corresponding main burner 11A～11F.Supplied by bullport 17 and advanced to the right in main burner 11A～11F by the compressed air from pipe 29 to the weft yarn Y of main burner 11A～11F.
Reed 15 is installed to slay 13 so that reed 15 is erected on the right side of main burner 11A～11F.Reed 15 includes multiple reed wire 15A, and it each has the recess 15B that the front side to air-jet loom opens.Reed wire 15A configures along the width of air-jet loom, and the recess 15B cooperation of reed wire 15A inserts path 21 to form the aforementioned weft yarn being carried through for the weft yarn Y inserted.Weft yarn inserts path 21 and is formed as extending along the width of reed 15.In fig 1 and 2, reference 20 represents the wall surface of the recess 15B of each reed wire 15A, the most also being the wall surface of weft yarn insertion path 21, the opening of its recess 15B away from each reed wire 15A or the opening (depending on the circumstances) away from weft yarn insertion path 21 are farthest.Main burner 11A～11F is disposed towards wall surface 20 or the wall surface 20 of weft yarn insertion path 21 of any specific reed wire 15A.Reed 15 is assemblied in the mounting groove 13A of slay 13, and is fixed by wedge 19.
Line P1, Q1 and R1 shown in Fig. 2 represents axis and the direction thereof of the air stream from corresponding main burner 11A, 11B and 11C injection.Air-flow axis P1, Q1 and R1 are oriented such that between air-flow axis P1, Q1, R1 and the wall surface 20 of reed wire 15A that the incidence angle θ 1 of formation, θ 2, θ 3 are different from each other, wherein θ 1 is minimum angles, θ 3 is maximum angle, and θ 2 is the intermediate angle (i.e. θ 1 < θ 2 < θ 3) between θ 1 and θ 3.Main burner 11D, 11E and 11F of bottom is arranged on the immediately below of they corresponding top main burner 11A, 11B and 11C.Therefore, the bearing of trend of the air-flow axis of the air sprayed from bottom main burner 11D～11F is approximately identical to the bearing of trend of the air-flow axis of the air from top main burner 11A～11C injection.Along with main burner is away from reed 15, incidence angle θ becomes big.In other words, the incidence angle θ 3 farthest away from reed and near main burner 11C and 11F of fell is maximum in three angle of incidence.
As shown in Figures 2 and 3, slay 13 is provided with many group auxiliary jet 25A～25G at its front surface, and it each includes one or more auxiliary jet.Auxiliary jet 25A～25G inserts path 21 with the configuration of given interval along weft yarn.As shown in fig. 1, each auxiliary jet 25A～25G is kept by rest pad 22 in its proximal end, and the far-end of nozzle points to weft yarn and inserts path 21.Rest pad 21 is fixed to be formed at the guiding groove 23 of the front side of slay 13 by bolt 24 and nut (not shown).
The connection of the air hose of weft insertion device 10 in air-jet loom is described referring now to the block diagram of Fig. 3.
Weft insertion device 10 includes air supply source 26, and it is connected to open and close valve 28 by pipe 27.Open and close valve 28 selectively supplies compressed air and stops supply compressed air.Open and close valve 28 is connected to filter 30 by being arranged on the pipe 29 of air-jet loom side, and is connected to piezometer 31.The compressed-air actuated pressure come from air supply source 26 supply measured by piezometer 31.Piezometer 31 is connected to master selector 32 by pipe 29 and is then attached to main tank 33.The compressed-air actuated pressure supplied from air supply source 26 is regulated to being suitable for the pressure that weft yarn inserts by master selector 32, and the compressed air being conditioned or being reduced to this pressure is stored in main tank 33.Main tank 33 is connected to main burner 11 by pipe 29 and six main valves 34.Although not shown in, each in six main burner 11A～11F is connected to corresponding in six main valves 34 one.
Compressed air in main tank 33 is supplied to main burner 11 by main valve 34, then starts to carry out weft yarn insertion so that the insertion of weft yarn Y is carried out.Pipe 35 is branched off from the pipe 29 between piezometer 31 and master selector 32, and pass through the pipe 29 that choke valve 36 is connected between main valve 34 and main burner group 11, thus form mild wind loop, it allows a small amount of compressed air obtaining choke valve 36 regulation to supply to main burner group 11 so that main burner 11 blowout is for keeping the mild wind of weft yarn Y.
On the other hand, pipe 37 is branched off from the pipe 29 between piezometer 31 and master selector 32, and is connected to the first secondary tank 39 by secondary controller 38.Secondary controller 38 will treat that the compressed-air actuated pressure supplied from air supply source 26 regulates to being suitable for secondary air pressure M1 that weft yarn inserts, and the compressed air being conditioned or being reduced to secondary air pressure M1 is stored in the first secondary tank 39.
Many group auxiliary jets 25 include being aligned closest to the auxiliary jet 25A of main burner 11, are positioned at auxiliary jet 25A three auxiliary jet 25B immediately downstream relative to weft yarn Y by the conveying direction of weft yarn insertion path 21, are successively set on four auxiliary jet 25C in auxiliary jet 25B downstream, four auxiliary jet 25D, four auxiliary jet 25E, four auxiliary jet 25F and four auxiliary jet 25G.
Auxiliary jet 25A is connected to the first secondary tank 39 by the first secondary valve 40.Auxiliary jet 25A is corresponding to first auxiliary jet of the present invention.
Each group auxiliary jet 25B, 25C, 25D, 25E, 25F and 25G are connected to the first secondary tank 39 by the single second secondary valve 41.Auxiliary jet 25B～25G is corresponding to second auxiliary jet of the present invention.
Especially, auxiliary jet 25A is connected to the first secondary tank 39 by the first secondary valve 40 and pipe 37.Each group auxiliary jet 25B～25G is connected to the first secondary tank 39 by its corresponding second secondary valve 41, and is connected to the first secondary tank 39 by pipe 37.Insert path 21 along weft yarn and be configured with 24 auxiliary jet 25A～25G altogether with given interval.When carrying out weft yarn and inserting, the first secondary valve 40 starts, and the compressed air being in secondary air pressure M1 supplies to auxiliary jet 25A from the first secondary tank 39.Similarly, the second secondary valve 41 starts, and the compressed air being in secondary air pressure M1 supplies to corresponding auxiliary jet 25B～25G from the first secondary tank 39.It is to be noted that the first secondary valve 40 and the second secondary valve 41 are same type, and same size and structure.Immediately downstream and the quantity of the auxiliary jet 25B that is connected to the second secondary valve 41 is three to be positioned at auxiliary jet 25A.The quantity of auxiliary jet 25A and the quantity sum of auxiliary jet 25B are four, and it is equal to the quantity of the auxiliary jet 25 in being arranged on one group of auxiliary jet 25B downstream and being connected to follow-up each group of auxiliary jet 25C～25G of the second secondary valve 41.
Piezometer 31 is electrically connected to the control device 43 with function panel 42, and sends the data about compressed-air actuated institute measuring pressure to controlling device 43.Control device 43 to have: memorizer, store wherein from the pressure data of piezometer 31 and various setting value etc.；And operational part, it carries out various calculating based on pressure data.In addition, control device 43 and store the various programs for operating air-jet loom wherein, and although not shown in, send signal also by during the weft yarn update of air-jet loom to the secondary valve of main valve 34, first 40 and the second secondary valve 41, control starting and the stopping of weft yarn update.
Referring now to the flow chart of Fig. 4, the control flow that weft yarn inserts is described.First, after weft yarn insertion starts (S101), it is controlled starting main valve 34 (S102) so that compressed air supplies to main burner group 11 (main burner 11A～11F) from main tank 33.
It follows that weft yarn Y passes through supplied compressed air passes main burner 11A～11F, and inserted path 21 (S103) from the port injection of main burner 11A～11F to weft yarn by weft yarn insertion air.It is to be noted that weft yarn inserts to carry out based on preset program, and the main burner inserted for weft yarn the most sequentially selects according to program from six main burner 11A～11F.
It is next determined that whether the selected main burner for weft yarn insertion is near fell (main burner 11C or 11F), or selected main burner is not closest to fell (main burner 11A, 11B, 11C or 11F) (S104).When determining the selected main burner for weft yarn insertion near fell, i.e., when have selected main burner 11C or 11F to carry out ("Yes" in S104) when weft yarn inserts, then program advances to step S105, even if here the first secondary valve 40 is controlled as also remaining turned-off (OFF control) at weft yarn Y through auxiliary jet 25A.Therefore, do not have compressed air to supply to auxiliary jet 25A, weft yarn Y from the first secondary tank 39 only to pass through to insert weft yarn insertion path 21 from the air that main burner 11C or main burner 11F (depending on which have selected) sprays.
Next, when weft yarn Y is through corresponding auxiliary jet 25B～25G, the secondary valve 41 of control second is sequentially to open from upstream side (ON control) (S106), thus compressed air is sequentially supplied to auxiliary jet 25B～25G from the first secondary tank 39.Therefore, auxiliary jet 25B～25G is controlled as sequentially spraying air with this order.
The weft yarn Y inserted in weft yarn insertion path 21 inserts path 21 (S107) by being transported to weft yarn from the air of auxiliary jet 25B～25G injection with trunking scheme (or towards downstream) to the right, and when weft yarn Y arrives relative with main burner group 11 end of cloth, terminate weft yarn and insert (S108).
When determining that the selected main burner for weft yarn insertion is not closest to fell, i.e., ("No" in S104) when weft yarn inserts is carried out when have selected main burner one of 11A, 11B, 11D or 11E, then program advances to step S109, and here the first secondary valve 40 is controlled as opening (ON control) at weft yarn Y through auxiliary jet 25A.As result, compressed air is able to supply to auxiliary jet 25A, auxiliary jet 25A from the first secondary tank 39 thus sprays air.
It follows that the secondary valve 41 of control second is sequentially to open from upstream side (ON control), thus compressed air is sequentially supplied to auxiliary jet 25B～25G (S110) from the first secondary tank 39.Therefore, auxiliary jet 25B～25G sequentially sprays air with this order.
The weft yarn Y inserted in weft yarn insertion path 21 inserts path 21 (S111) by being transported to weft yarn from the air of auxiliary jet 25B～25G injection with trunking scheme (or towards downstream) to the right, and when weft yarn Y arrives relative with main burner group 11 end of cloth, terminate weft yarn and insert (S108).
The operation of the above-mentioned weft insertion device 10 in the air-jet loom with above-mentioned structure according to a first embodiment of the present invention explained below.
When weft yarn inserts beginning, it is controlled starting main valve 34 so that compressed air supplies to main burner group 11 (main burner 11A～11F) from main tank 33.From (or towards downstream) flowing to the right weft yarn inserts path 21 of the air of main burner 11A～11F injection, as found out in fig 1 and 2.
As shown in Figure 2, from the air blast of main burner 11A～11F injection to the wall surface 20 of recess 15B, then reflect from wall surface 20, as shown by arrows.Especially, the air sprayed from main burner 11A along air-flow axis P1 at a K1 at impact on wall surface 20, then turn to as contrajet P2, it is the reflection of direction shown in arrow P2 along Fig. 2.The air sprayed from main burner 11B along air-flow axis Q1 at a K2 at impact on wall surface 20, then turn to as contrajet Q2, it is the reflection of direction shown in arrow Q2 along Fig. 2.The air sprayed from main burner 11C along air-flow axis R1 at a K3 at impact on wall surface 20, then turn to as contrajet R2, it is the reflection of direction shown in arrow R2 along Fig. 2.In fig. 2, K1, K2 and K3 represent the pip of the air from corresponding main burner 11A～11F injection.
Merged with the air F from auxiliary jet 25A before the air of corresponding main burner 11A～11F injection reflects on the wall surface 20 of reed wire 15A.Main burner 11A～11F and auxiliary jet 25A is arranged so that air F angle of incidence of 20 from auxiliary jet 25A to wall surface is respectively greater than the incidence angle θ 1 of air from main burner 11A～11F injection, θ 2 and θ 3.Therefore, reflective air stream and direction respectively thereof after merging are represented by P3, Q3 and R3, as in figure 2 it is shown, the reflection angle that the reflection angle of contrajet P3, Q3 and R3 is more than contrajet P2, Q2 and R2 before merging with the air F from auxiliary jet 25A.Especially, the air sprayed from main burner 11A merges the reflection angle more than the contrajet P2 before merging of the reflection angle so that contrajet P3 with the air F's from auxiliary jet 25A.Similarly, the air sprayed from main burner 11B merges the reflection angle more than contrajet Q2 of the reflection angle so that contrajet Q3 with the air F's from auxiliary jet 25A.When the air sprayed from main burner 11C merges with the air F sprayed from auxiliary jet 25A, the reflection angle of the contrajet R3 reflection angle more than the contrajet R2 before merging.
Additionally, because main burner 11 is arranged to meet relation θ 1 < θ 2 < θ 3, so in contrajet P3, Q3 and R3, the reflection angle of contrajet R3 is maximum, the reflection angle of contrajet P3 is minimum, and the reflection angle of contrajet Q3 is between the reflection angle of R3 and P3.
As shown in Figure 2, when auxiliary jet 25A is controlled as combining injection air with the air sprayed from main burner 11C or 11F near fell, therefore the air sprayed from main burner 11C or main burner 11F merges with the air F from auxiliary jet 25A, air blast after merging, on wall surface 20, then turns to as contrajet R3.The reflection angle of contrajet R3 is maximum, therefore, contrajet R3 likely with merges from the air F being arranged on auxiliary jet 25A auxiliary jet 25B blowout immediately downstream before, insert path 21 (or the open sides towards recess 15B) outflow from weft yarn.
When weft yarn Y inserts from main burner 11C or main burner 11F, even if the first secondary valve 40 is controlled as also remaining turned-off (OFF control) at weft yarn Y through auxiliary jet 25A, thus do not have compressed air to supply to auxiliary jet 25A from the first secondary tank 39, thus not from the injection of auxiliary jet 25A.At weft yarn Y in the case of the main burner 11C or main burner 11F near fell inserts, when weft yarn Y reflects on wall surface 20 through auxiliary jet 25A, the only air from main burner 11C or 11F, thus cause the contrajet R2 in Fig. 2.The reflection angle of the contrajet R3 occurred when the reflection angle of contrajet R2 merges with the air F from auxiliary jet 25A less than the air sprayed from main burner 11C or main burner 11F, and at contrajet R2 before weft yarn inserts path 21 outflow, contrajet R2 merges with from the air F being arranged on auxiliary jet 25 auxiliary jet 25B immediately downstream.As result, do not occur contrajet to insert, from weft yarn, the situation that path 21 flows out, deviate it is therefore prevented that weft yarn Y inserts path 21 from weft yarn easily, thus prevent mixed weft.
On the other hand, when by when not carrying out weft yarn insertion near any one in main burner 11A, 11B, 11D and 11E of fell, first secondary valve 40 is controlled as opening (ON control), and compressed air supplies to the auxiliary jet 25A near main burner group 11 from the first secondary tank 39, so that auxiliary jet 25A sprays air.Therefore, when by not main burner 11A, 11B, 11D or 11E near fell carry out weft yarn insert time, merge with the air F from auxiliary jet 25A from the air of main burner 11A, 11B, 11D or 11E injection, air after merging reflects on the wall surface 20 of reed wire 15A, thus forms contrajet P3 or Q3.The reflection angle of contrajet P3 or the contrajet Q3 reflection angle less than contrajet R3, contrajet P3 or Q3, before inserting path 21 outflow from weft yarn, merges with from the air F being positioned at auxiliary jet 25A auxiliary jet 25B immediately downstream.As result, contrajet is not occurred to insert, from weft yarn, the situation that path 21 flows out.
Fig. 5 shows the coordinate diagram of the change that the pressure of auxiliary jet 25A elapses in time.In Figure 5, solid line G illustrates and is connected to the first secondary valve 40 and is controlled as spraying the characteristic curve of the auxiliary jet 25A of air.Dotted line H illustrates the auxiliary jet 25A characteristic curve when it is connected to the second secondary valve 41, and wherein the second secondary valve 41 is connected with three auxiliary jet 25B, and is controlled as spraying air.As shown in Figure 5, the surge pressure G1 in characteristic curve G is higher than the surge pressure H1 (G1 > H1) in characteristic curve H.The surge pressure of auxiliary jet 25A is higher in the case of auxiliary jet 25A is connected to the first secondary valve 40 and is controlled as spraying air, i.e. surge pressure G1 is higher than surge pressure H1.Therefore, the expulsion pressure away from main burner 11A, 11B, 11D and 11E of fell side may reduce.Additionally, the quantity being connected to the auxiliary jet 25B of the second secondary valve 41 is less than the quantity of follow-up each group of auxiliary jet 25C, 25D, 25E, 25F and 25G.Therefore, the expulsion pressure of the auxiliary jet 25B expulsion pressure higher than auxiliary jet 25C～25G so that the expulsion pressure of main burner 11A, 11B, 11D and 11E may reduce this degree when weft yarn inserts.
Weft insertion device 10 in the air-jet loom of first embodiment of the invention provides following effect.
(1) in the weft insertion device such as 10 of the present embodiment, the wall surface 20 wherein inserting path 21 near main burner 11C or 11F of the fell of air-jet loom relative to weft yarn points to weft yarn insertion path 21 with big incidence angle θ 3, when the air sprayed from main burner 11C or 11F merges with the air F from the auxiliary jet 25A near main burner group 11, gained contrajet R3 likely contrajet R3 with merge from the air F being arranged at auxiliary jet 25A auxiliary jet 25B immediately downstream before, turn to as inserting, from weft yarn, the flowing that path 21 flows out, so that the weft yarn Y deviation weft yarn inserted inserts path 21.But, according to the present embodiment, when being carried out weft yarn insertion by main burner 11C or main burner 11F, first secondary valve 40 is controlled as remaining turned-off (OFF control) through auxiliary jet 25A at weft yarn Y, and compressed air does not supplies to auxiliary jet 25 from secondary tank 39, thus does not has air to eject from auxiliary jet 25A.Therefore, the air sprayed from main burner 11C or main burner 11F reflexes in contrajet R2 on wall surface 20, contrajet R2 is not flowed out, so that do not flow out from the weft yarn Y of main burner 11C or 11F insertion, then contrajet R2 merged with the air F from auxiliary jet 25B before weft yarn inserts path 21 outflow at contrajet R2.Therefore, contrajet does not inserts path 21 from weft yarn and flows out, thus prevents weft yarn Y deviation weft yarn to insert path 21.
(2) when by when not carrying out weft yarn insertion near any one in main burner 11A, 11B, 11D and 11E of fell, first secondary valve 40 is controlled as opening (ON control), and compressed air supplies to the auxiliary jet 25A near main burner group 11 from the first secondary tank 39, so that auxiliary jet 25A sprays air.Air from main burner 11A, 11B, 11D or 11E is merged into contrajet P3 or Q3 with from the air F of auxiliary jet 25A blowout.Gained contrajet P3 or Q3, before inserting path 21 outflow from weft yarn, merges with from the air F being arranged on auxiliary jet 25A auxiliary jet 25B immediately downstream, does not the most occur contrajet to insert, from weft yarn, the situation that path 21 flows out.Therefore, when being carried out weft yarn insertion by any one in main burner 11A, 11B, 11D and 11E in the case of being controlled as opening at auxiliary jet 25A, in the case of not controlling auxiliary jet 25A for closing, weft yarn Y is not the most occurred to insert the situation of path 21 deviation from weft yarn.
(3) the auxiliary jet 25A near main burner group 11 is connected to the first secondary tank 39 by the first secondary valve 40.When by the main burner 11C or main burner 11F near fell carry out weft yarn insert time, even if the first secondary valve 40 at weft yarn Y through auxiliary jet 25A, be also controlled by as remaining turned-off.The expulsion pressure of auxiliary jet 25A is zero, thus the expulsion pressure less than auxiliary jet 25B～25G.Therefore, with need to use the first secondary valve as pressure-regulating valve or compared with needing to provide the structure of compressed-air actuated multiple gas tanks of storage different pressures, it is possible to successfully prevented weft yarn Y deviation weft yarn from inserting path 21 by simple structure.
(4) first embodiment of the present invention can carry out the modification of minimum, i.e. providing with the second secondary valve 41 is same type and the secondary valve 40 for general type, and the single secondary valve 25A that will be closest to main burner group 11 is connected to the first secondary valve 40.Additionally, only one of which auxiliary jet 25A is connected to the first secondary valve 40, and the quantity of the second auxiliary jet being arranged in auxiliary jet 25A one group of auxiliary jet 25B immediately downstream is less than the quantity of the auxiliary jet in follow-up each group of auxiliary jet 25C, 25D, 25E, 25F and 25G.Therefore, auxiliary jet 25A and the expulsion pressure being positioned at auxiliary jet 25A auxiliary jet 25B immediately downstream can increase, and therefore, the expulsion pressure of main burner 11A, 11B, 11D and 11E can reduce the degree reaching this increase.This contributes to reducing energy expenditure.
(5) when being controlled as being sprayed air by the first secondary valve 40 near the auxiliary jet 25A of main burner group 11, compared with the structure in the group that auxiliary jet 25A is included in auxiliary jet 25B, except the expulsion pressure of main burner 11A, 11B, 11D and 11E in addition to main burner 11C and 11F of fell can be lowered.
Second embodiment
Below with reference to Fig. 6, the second embodiment of the present invention is described.
Second embodiment and the difference of first embodiment are the structure of the first secondary valve, and remaining structure is roughly the same.Therefore, for convenience of description, the first and second embodiments will be used in conjunction with a part of reference to represent identical parts or element, and will omit its details, and only describe with the difference of first embodiment in place of.
The connection of the air hose of the weft insertion device represented by reference 50 in air-jet loom is described referring now to the block diagram of Fig. 6.
Auxiliary jet 25A near main burner group 11 is connected to switch valve 51, and described switching valve 51 includes the first valve 51A, the second valve 51B and the check-valves 51C being arranged between the first valve 51A and the second valve 51B.Switching valve 51 is configured between the first valve 51A and the second valve 51B switch pressure.It is to be noted that the switching valve 51 first secondary valve corresponding to the present invention.Auxiliary jet 25A near main burner group 11 is connected to the first valve 51A, and is connected to the first secondary tank 39 by pipe 37 further.Auxiliary jet 25A is connected to the second valve 51B, and is connected to the second secondary tank 53 by pipe 52 further.Compressed-air actuated pressure M2 in second secondary tank 53 is the pressure M1 in secondary tank 39 less than first.In other words, the compressed-air actuated pressure in the second secondary tank 53 is less than the compressed-air actuated pressure in the first pair tank 39.
Pipe 37 is branched off from the pipe 29 between piezometer 31 and master selector 32, and is connected to secondary controller 38.Secondary controller 54 is connected with the pipe 52 being branched off from pipe 37, and is connected to the second secondary tank 53.The compressed-air actuated pressure supplied from air supply source 26 is regulated to being suitable for secondary air pressure M2 that weft yarn inserts by secondary controller 54, and the compressed air being conditioned or being reduced to secondary air pressure M2 is stored in the second secondary gas tank 53.
The control that weft yarn insert during carries out be will now be described.When being carried out weft yarn insertion by the main burner 11C or main burner 11F of the fell near air-jet loom, switching valve 51 is controlled as opening the second valve 51B (ON control) at weft yarn Y through auxiliary jet 25A, the compressed air being in low pressure supplies to the auxiliary jet 25A near main burner group 11, so that auxiliary jet 25A sprays air from the second secondary tank 53 that the secondary tank 39 of pressure ratio first is low.At this moment first valve 51A is controlled as remaining turned-off (OFF control).
On the other hand, when by when not carrying out weft yarn insertion near any one in main burner 11A, 11B, 11D and 11E of fell, switching valve 51 is controlled as opening the first valve 51A (ON control) at weft yarn Y through auxiliary jet 25A, compressed air is thus allowed to supply to auxiliary jet 25A from the first secondary tank 39, to spray air from auxiliary jet 25A.Because at this moment the second valve 51B remains turned-off (OFF control), the check-valves 51C between the first valve 51A and the second valve 51B prevents compressed air from being flow to the second secondary tank 53 by the second valve 51B from the first secondary tank 39 (being in higher secondary air pressure M1).
So, during by using and carrying out weft yarn insertion near the main burner 11C or main burner 11F of the fell of air-jet loom, switching valve 51 is controlled as opening the second valve 51B (ON control), to allow the compressed air being in low pressure to supply to auxiliary jet 25A from the second secondary tank 53 that the secondary tank 39 of pressure ratio first is low.The air sprayed from main burner 11C or main burner 11F merges with the air being in low pressure from auxiliary jet 25A, and reflects at the wall surface 20 of weft yarn insertion path 21.The contrajet of gained then its from weft yarn insert path 21 flow out before, merge with from the air F being arranged on auxiliary jet 25A auxiliary jet 25B immediately downstream.Therefore, contrajet does not flows out from weft yarn insertion path 21.As result, weft yarn Y inserts path 21 without departing from weft yarn, thus prevents generation mixed weft (mispicks).
Should not be construed and the present invention is limited to above example.The present invention can carry out various modification, as follows without departing from the spirit and scope of the present invention.
According to the first and second aspects of the present invention, the group of auxiliary jet 25B includes three auxiliary jets, and each in auxiliary jet group 25C～25G includes four auxiliary jets.However, it is also possible to be constructed so that the group of auxiliary jet 25B includes an auxiliary jet, and respectively organize auxiliary jet 25C～25G and include two auxiliary jets.In such a case it is possible to smoothly spray air.
According to the first and second embodiments, the group of auxiliary jet 25B include three auxiliary jets and respectively each in group auxiliary jet 25C～25G include four auxiliary jets, and auxiliary jet 25A～25G is with the configuration of given interval.But, according to the present invention, the group of auxiliary jet 25A～25G can be inserted path 21 along weft yarn and be configured in two separate regions, and the spacing being wherein in the auxiliary jet in upstream region is different from the spacing in the downstream area being in weft yarn insertion path 21.Especially, may also be so constructed that, the configuration part that is in the region of upstream side in weft yarn inserts path 21 includes auxiliary jet group 25A～the 25G of two auxiliary jets, and auxiliary jet 25A～25G remaining organized that be in the region in downstream in weft yarn inserts path 21 is configured to include three auxiliary jets.In this case, the spacing of the auxiliary jet being smaller than being positioned in downstream area of the auxiliary jet being positioned in the upstream region of weft yarn insertion path 21 so that the specific air consumption for air injection with the separate auxiliary jet of larger space being positioned in the downstream area of weft yarn insertion path 21 can be reduced.
In above variant embodiment, be positioned at weft yarn and insert each group auxiliary jet in the upstream region of path and can include four auxiliary jets, and be positioned in the respectively group auxiliary jet of remaining in downstream area each can include three auxiliary jets.In this configuration, the auxiliary jet spacing distance in upstream region is less than the auxiliary jet in downstream area so that the specific air consumption for air injection being positioned in the upstream side region of weft yarn insertion path 21 auxiliary jet configured with larger space can be reduced.
Pressure-regulating valve can be used as the first secondary valve so that when being carried out weft yarn insertion by main burner 11C or 11F of the fell near air-jet loom, the compressed-air actuated pressure to be fed to auxiliary jet 25A is lowered.
Can also be constructed so that, when using the main burner in addition to the main burner near the fell of air-jet loom to carry out weft yarn insertion, insert the deviation state of path 21 based on weft yarn Y from weft yarn, the expulsion pressure of the first auxiliary jet is set at less than the expulsion pressure of the second auxiliary jet.
Claims (5)
1., for controlling the method that the weft yarn in air-jet loom inserts, described air-jet loom includes:
Multiple main burners (11A, 11B, 11C, 11D, 11E, 11F), it is arranged side-by-side along direction before and after air-jet loom；
Reed (15), it is arranged on the downstream of main burner (11A, 11B, 11C, 11D, 11E, 11F) relative to the weft yarn direction of insertion of air-jet loom, and installing to slay (13), described reed (15) has recessed weft yarn in its front surface and inserts path (21)；With
Multiple auxiliary jets (25A, 25B, 25C, 25D, 25E, 25F), it inserts path (21) configuration along weft yarn, wherein auxiliary jet (25A, 25B, 25C, 25D, 25E, 25F) includes near first auxiliary jet (25A) of main burner (11A, 11B, 11C, 11D, 11E, 11F) with not near multiple second auxiliary jets (25B, 25C, 25D, 25E, 25F) of main burner (11A, 11B, 11C, 11D, 11E, 11F), it is characterized in that, described method farther includes:
A main burner (11C, 11F) near fell carries out weft yarn when inserting at least by main burner (11A, 11B, 11C, 11D, 11E, 11F), and the expulsion pressure of the first auxiliary jet (25A) is set at less than the expulsion pressure of the second auxiliary jet (25B, 25C, 25D, 25E, 25F).
2. the weft insertion device (10,50) in an air-jet loom, including:
Multiple main burners (11A, 11B, 11C, 11D, 11E, 11F), it is arranged side-by-side along direction before and after air-jet loom；
Reed (15), it is arranged on the downstream of main burner (11A, 11B, 11C, 11D, 11E, 11F) relative to the weft yarn direction of insertion of air-jet loom, and installing to slay (13), described reed (15) has recessed weft yarn in its front surface and inserts path (21)；With
Multiple auxiliary jets (25A, 25B, 25C, 25D, 25E, 25F), it inserts path (21) configuration along weft yarn, and wherein auxiliary jet (25A, 25B, 25C, 25D, 25E, 25F) includes near first auxiliary jet (25A) of main burner (11A, 11B, 11C, 11D, 11E, 11F) with not near multiple second auxiliary jets (25B, 25C, 25D, 25E, 25F) of main burner (11A, 11B, 11C, 11D, 11E, 11F)；With
Multiple secondary valves (40,41,51), it is connected to auxiliary jet (25A, 25B, 25C, 25D, 25E, 25F), it is characterised in that
Second auxiliary jet (25B, 25C, 25D, 25E, 25F) is divided into multiple groups,
Secondary valve (40,41,51) includes the first secondary valve (40,51) and the multiple second secondary valve (41),
First auxiliary jet (25A) is connected to the first secondary valve (40,51),
Each group the second auxiliary jet (25B, 25C, 25D, 25E, 25F) is connected to the corresponding second secondary valve (41),
Each group the second auxiliary jet (25B, 25C, 25D, 25E, 25F) is connected to the first secondary tank (39) by the corresponding second secondary valve (41),
Weft insertion device (10,50) includes controlling device (43), and it controls the first secondary valve (40,51) and the second secondary valve (41), and
A main burner (11C, 11F) near fell carries out weft yarn when inserting at least by main burner (11A, 11B, 11C, 11D, 11E, 11F), control device (43) and control the first secondary valve (40,51) so that the expulsion pressure of the first auxiliary jet (25A) is less than the expulsion pressure of the second auxiliary jet (25B, 25C, 25D, 25E, 25F).
Weft insertion device (10,50) in air-jet loom the most according to claim 2, it is characterised in that
First auxiliary jet (25A) is connected to the first secondary tank (39) by the first secondary valve (40), and
A main burner (11C, 11F) near fell carries out weft yarn when inserting in by main burner (11A, 11B, 11C, 11D, 11E, 11F), even if at weft yarn (Y) when the first auxiliary jet (25A), control device (43) and the first secondary valve (40) is controlled as remaining turned-off.
Weft insertion device (10,50) in air-jet loom the most according to claim 3, it is characterised in that
First secondary valve (40) and the second secondary valve (41) they are same type, and
The quantity of each auxiliary jet that the quantity of the first auxiliary jet (25A) and the quantity sum being arranged in the first auxiliary jet (25A) one group of second auxiliary jet (25B) immediately downstream are equal in follow-up each group of the second auxiliary jet (25C, 25D, 25E, 25F).
Weft insertion device (50) in air-jet loom the most according to claim 2, it is characterised in that
First secondary valve (40,51) is switching valve (51), it includes the first valve (51A) and is connected to second valve (51B) of the first valve (51A), and it is configured between the first valve (51A) and the second valve (51B) switch pressure
First auxiliary jet (25A) is connected to the first secondary tank (39) by the first valve (51A), and
The second secondary tank (53) that pressure that first auxiliary jet (25A) is connected in the secondary tank (39) of pressure ratio first by the second valve (51B) is low.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015052805A JP6172186B2 (en) | 2015-03-17 | 2015-03-17 | Weft insertion control method for air jet loom and weft insertion device for air jet loom |
| JP2015-052805 | 2015-03-17 |
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| Publication Number | Publication Date |
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| CN105986351A true CN105986351A (en) | 2016-10-05 |
| CN105986351B CN105986351B (en) | 2017-10-03 |
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| CN201610148654.8A Active CN105986351B (en) | 2015-03-17 | 2016-03-16 | It is used for method and the weft insertion device for controlling weft yarn to insert in air-jet loom |
Country Status (3)
| Country | Link |
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| JP (1) | JP6172186B2 (en) |
| CN (1) | CN105986351B (en) |
| BE (1) | BE1023553B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109457371A (en) * | 2019-01-17 | 2019-03-12 | 王安俭 | For adjusting the device and method of the eject position of pilot jet in air-jet loom |
| CN110582597A (en) * | 2017-05-11 | 2019-12-17 | 必佳乐公司 | Mounting device for a nozzle arrangement and nozzle arrangement |
| CN111663232A (en) * | 2019-03-06 | 2020-09-15 | 株式会社丰田自动织机 | Weft insertion device of air jet loom |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6454310B2 (en) | 2016-09-05 | 2019-01-16 | 矢崎総業株式会社 | Wire integrated clamp mark and wire harness |
| JP7429095B2 (en) * | 2018-11-19 | 2024-02-07 | 株式会社豊田自動織機 | air jet loom |
| JP7489003B2 (en) * | 2021-01-29 | 2024-05-23 | 株式会社豊田自動織機 | Air jet weaving machine weft insertion device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110582597A (en) * | 2017-05-11 | 2019-12-17 | 必佳乐公司 | Mounting device for a nozzle arrangement and nozzle arrangement |
| CN110582597B (en) * | 2017-05-11 | 2021-05-11 | 必佳乐公司 | Mounting device for a nozzle arrangement and nozzle arrangement |
| CN109457371A (en) * | 2019-01-17 | 2019-03-12 | 王安俭 | For adjusting the device and method of the eject position of pilot jet in air-jet loom |
| CN111663232A (en) * | 2019-03-06 | 2020-09-15 | 株式会社丰田自动织机 | Weft insertion device of air jet loom |
| CN111663232B (en) * | 2019-03-06 | 2021-07-06 | 株式会社丰田自动织机 | Weft insertion device of air jet loom |
Also Published As
| Publication number | Publication date |
|---|---|
| BE1023553B1 (en) | 2017-05-02 |
| JP2016172937A (en) | 2016-09-29 |
| BE1023553A1 (en) | 2017-05-02 |
| JP6172186B2 (en) | 2017-08-02 |
| CN105986351B (en) | 2017-10-03 |
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