CN212611140U - Air jet loom and weft yarn drafting device thereof - Google Patents
Air jet loom and weft yarn drafting device thereof Download PDFInfo
- Publication number
- CN212611140U CN212611140U CN202020674696.7U CN202020674696U CN212611140U CN 212611140 U CN212611140 U CN 212611140U CN 202020674696 U CN202020674696 U CN 202020674696U CN 212611140 U CN212611140 U CN 212611140U
- Authority
- CN
- China
- Prior art keywords
- drafting
- weft yarn
- jet loom
- air
- pipe
- 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.)
- Active
Links
Images
Landscapes
- Looms (AREA)
Abstract
The utility model discloses an air jet loom and a weft yarn drafting device thereof, which comprises a drafting tube and an air inlet tube, the axial line of the air inlet pipe and the axial line of the drafting pipe form an included angle when projected on any plane, the included angle is an acute angle or an obtuse angle, the axis of the air inlet pipe does not intersect with the axis of the drafting pipe, the left end of the drafting tube is used for sucking flying weft yarns, the air inlet tube is communicated with a compressed air source, the inclined direction of the air inlet pipe faces the right end of the drafting pipe, compressed air from the air inlet pipe directly flows to the right end of the drafting pipe, so that a negative pressure area is formed at the left end of the drafting pipe to suck flying weft yarns, and the compressed air forms a rotating airflow at the right end of the drafting tube to twist the weft yarn, so as to compensate the twist lost by the weft yarn in the free flight process. The untwisting problem is well solved.
Description
Technical Field
The utility model relates to an air jet loom woof twisting technical field especially relates to an air jet loom and woof drafting arrangement thereof.
Background
The air jet loom utilizes high-pressure airflow to realize weft insertion, weft yarn is in a free flight state in the weft insertion process, and the weft yarn inevitably has a untwisting phenomenon due to relative motion between the high-pressure airflow and the weft yarn. In weaving production, the flying track of weft yarn starts from the left side of the air jet loom and finishes after reaching the right side of the loom, the weft yarn is untwisted all the time in the whole weft insertion process, so the untwisting condition of the right side of the fabric is more serious than that of the left side due to the flight time difference, and waste cloth is formed on the surface of the fabric in different left and right styles, which is a worldwide problem restricting the air jet loom, and the defect restricts the variety adaptability and the product quality of the air jet loom and restricts the application range of the air jet loom.
In the market, two schemes are currently available for researching the left-right color difference of the cloth cover caused by untwisting, one scheme is to control the untwisting phenomenon of weft yarn in flight, and a left-right bidirectional weft insertion mode is adopted, namely, a weft yarn is introduced from left to right during weft insertion of a weaving machine, then a weft yarn is introduced from right to left, the weft yarn and the weft yarn are alternately carried out, the untwisting conditions occur when the weft yarn reaches the left side and the right side, and the untwisting conditions of the weft yarn at the left side and the weft yarn at the right side are alternately existed, so that the left side and the. Although the fabric looks different from the left side to the right side, the method essentially changes the original untwisting of the weft yarns of the left fabric into the same untwisting, and realizes the left-right consistency by reducing the quality of the left fabric of the fabric.
Another solution is to give the weft on the left entry side of the air jet loom a process of advance twisting. However, after a certain distance of free flight, when the weft reaches the rightmost side of the loom and the back twist reaches the maximum value, because the position is far away from the main nozzle on the weft inlet side of the loom (usually in the range of 1.9-3.6), the twisting function of the main nozzle cannot play a role at all on the long distance, the weft reaching the right side still has the back twist, and the scheme still cannot solve the back twist problem.
Therefore, how to provide a weft yarn drafting device of an air jet loom to solve the untwisting problem is a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a weft drafting device for an air jet loom to solve the untwisting problem. Another object of the present invention is to provide an air jet loom using the weft drafting device of the air jet loom.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides an air jet loom woof drafting arrangement, includes draft tube and intake pipe, the axis of intake pipe with the axis projection of draft tube has the contained angle when on arbitrary one plane, the contained angle is acute angle or obtuse angle, the axis of intake pipe with the axis non-intersect of draft tube, the left end of draft tube is used for inhaling the woof that flies over, intake pipe and compressed air source intercommunication, the incline direction of intake pipe is towards the right-hand member of draft tube, follow the compressed air that comes out in the intake pipe directly flows to the right-hand member of draft tube for the left end of draft tube forms the negative pressure zone, inhales the woof that flies over, and compressed air is in the right-hand member of draft tube forms rotatory air current and twists the woof, compensates the twist that the woof lost in the free flight in front.
Preferably, the air inlet pipe is communicated with the compressed air source through a communicating pipeline, an electromagnetic valve is arranged on the communicating pipeline, and the pressure of the compressed air entering the air inlet pipe and the ventilation time are adjusted through the electromagnetic valve to control the twisting quantity.
Preferably, the electromagnetic valve is controlled by an electric control system of the air jet loom.
Preferably, an air storage bag is arranged between the electromagnetic valve and the compressed air source.
Preferably, a pressure regulating valve is provided between the air storage bag and the compressed air source.
Preferably, the pipe wall at one side of the air inlet pipe is tangent to the pipe wall at one side of the drafting pipe.
Preferably, the air inlet pipe is located on one side or the other side of the axis of the draft tube.
The utility model also provides an air jet loom, include as above-mentioned arbitrary one air jet loom woof drafting arrangement, air jet loom woof drafting arrangement sets up the one end that the woof reachd on the air jet loom, the flight position of woof is in on the axis of draft pipe.
Preferably, the draft tube is installed in a profiled reed groove of the air jet loom and positioned at a right weft arrival shed of the air jet loom.
Preferably, when the weft yarn is twisted in a "Z" direction before entering the draft tube, the eccentricity of the air inlet tube is on the right side of the draft tube, that is, on the right side of the weft yarn, and when the weft yarn is twisted in an "S" direction, the eccentricity of the air inlet tube is on the left side of the draft tube, that is, on the left side of the weft yarn.
The weft yarn drafting device of the air jet loom provided by the utility model comprises a drafting tube and an air inlet tube, an included angle is formed between the axis of the air inlet tube and the projection of the axis of the drafting tube on any plane, the included angle is an acute angle or an obtuse angle, the axis of the air inlet pipe does not intersect with the axis of the drafting pipe, the left end of the drafting tube is used for sucking flying weft yarns, the air inlet tube is communicated with a compressed air source, the inclined direction of the air inlet pipe faces the right end of the drafting pipe, compressed air from the air inlet pipe directly flows to the right end of the drafting pipe, so that a negative pressure area is formed at the left end of the drafting pipe to suck flying weft yarns, and the compressed air forms a rotating airflow at the right end of the drafting tube to twist the weft yarn, so as to compensate the twist lost by the weft yarn in the free flight process.
The utility model provides an air jet loom woof drafting arrangement adopts and increases a drafting arrangement in the rightmost side that the most serious woof of untwisting phenomenon reachs the department, and this drafting arrangement has the air inlet of axial clarity, tangential eccentric structure. The air inlet pipe and the drafting pipe are provided with eccentric structures in the tangential direction, the air inlet pipe is obliquely arranged, compressed air enters the drafting pipe from the air inlet pipe to form a rotating vortex in the drafting pipe, a negative pressure area is formed at the left side part of the drafting pipe, weft yarns are guaranteed to be sucked into the drafting pipe, a high-pressure vortex sprayed rightwards is formed inside the right side of the drafting pipe, and twisting action is formed on the weft yarns passing through the high-pressure vortex to compensate the twist lost in the front free flight process of the weft yarns, so that the twist lost in the whole width length free flight process of the weft yarns is compensated again.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a weft drafting device of an air jet loom according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a weft drafting device of an air jet loom, which is used on the air jet loom and provided by the embodiment of the invention;
fig. 3 is a schematic structural view of the air inlet pipe eccentric on the right side of the draft pipe when the weft yarn provided by the embodiment of the present invention is "Z" twisted;
fig. 4 is a schematic structural view of the air inlet tube eccentric on the left side of the draft tube when the weft yarn provided by the embodiment of the present invention is "S" twisted.
In the above FIGS. 1-4:
the air jet loom weft yarn drafting system comprises weft yarn 1, an air jet loom weft yarn drafting device 2, an air inlet pipe 21, a drafting pipe 22, a negative pressure area 23, a high-pressure vortex area 24, a communication pipeline 3, an electromagnetic valve 4, an air storage bag 5, a pressure regulating valve 6 and a compressed air source 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a weft drafting device of an air jet loom according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a weft drafting device of an air jet loom, which is used on the air jet loom and provided by the embodiment of the invention; fig. 3 is a schematic structural view of the air inlet pipe eccentric on the right side of the draft pipe when the weft yarn provided by the embodiment of the present invention is "Z" twisted; fig. 4 is a schematic structural view of the air inlet tube eccentric on the left side of the draft tube when the weft yarn provided by the embodiment of the present invention is "S" twisted.
The embodiment of the utility model provides an air jet loom woof drafting arrangement 2, including draft tube 22 and intake pipe 21, the axis of intake pipe 21 has the contained angle with the axis projection of draft tube 22 when an arbitrary plane, the contained angle is acute angle or obtuse angle, the axis of intake pipe 21 and the axis disjuncture of draft tube 22, the left end of draft tube 22 is used for inhaling flying woof 1, intake pipe 21 and compressed air source 7 intercommunication, the incline direction of intake pipe 21 is towards the right-hand member of draft tube 22, the direct flow direction of compressed air who comes out from intake pipe 21 is to the right-hand member of draft tube 22, make the left end of draft tube 22 form negative pressure zone, inhale flying woof 1, and compressed air forms rotatory air current at the right-hand member of draft tube 22 and twists to woof 1, compensate the twist that woof 1 loses in the free flight in the front.
The embodiment of the utility model provides an air jet loom woof drafting arrangement 2 adopts and increases a drafting arrangement in the rightmost side that 1 department of reacing of the most serious woof of untwisting phenomenon, and this drafting arrangement has the air inlet of the axial clarity, tangential eccentric structure. Because the air inlet pipe 21 and the drafting pipe 22 have eccentric structures in the tangential direction, and the air inlet pipe 21 is obliquely arranged, compressed air enters the drafting pipe 22 from the air inlet pipe 21 and forms a rotating vortex in the drafting pipe 22, and a negative pressure area is formed at the left side part of the drafting pipe 22, so that weft yarn 1 is ensured to be sucked into the drafting pipe 22, a high-pressure vortex area 24 which is sprayed rightwards is formed in the right side of the drafting pipe 22, twisting action is formed on the weft yarn 1 passing through the high-pressure vortex area, the twist lost in the process of free flight of the weft yarn 1 in the front direction is compensated, and the twist lost in the process of free flight of the weft yarn 1 in the whole width length is compensated again.
The air inlet pipe 21 is communicated with a compressed air source 7 through a communicating pipeline 3, the communicating pipeline 3 is provided with an electromagnetic valve 4, and the pressure of compressed air entering the air inlet pipe 21 and the ventilation time are adjusted through the electromagnetic valve 4 to control the twisting quantity. The electromagnetic valve 4 is controlled by an electric control system of the air jet loom.
Wherein, an air storage bag 5 is arranged between the electromagnetic valve 4 and the compressed air source 7. A pressure regulating valve 6 is arranged between the air storage bag 5 and the compressed air source 7. Thereby guarantee stable air supply and provide, when solenoid valve 4 adjusted the pressure of the compressed air who gets into intake pipe 21, gas storage package 5 played the transition cushioning effect.
Specifically, the tube wall on one side of the air inlet tube 21 is tangent to the tube wall on one side of the draft tube 22, which is most beneficial to generate a large or maximum rotational vortex.
Specifically, the intake duct 21 is located on one side or the other side of the axis of the draft tube 22. When the weft yarn 1 is twisted in a Z shape before the weft yarn 1 enters the drafting tube, the eccentricity of the air inlet pipe 21 is on the right side of the drafting tube 22, namely on the right side of the weft yarn 1, and when the weft yarn 1 is twisted in an S shape, the eccentricity of the air inlet pipe 21 is on the left side of the drafting tube 22, namely on the left side of the weft yarn 1.
The embodiment of the utility model provides a still provide an air jet loom, include as above-mentioned arbitrary embodiment air jet loom woof drafting arrangement 2, air jet loom woof drafting arrangement 2 sets up the one end that the woof reachd on air jet loom, and the flight position of woof 1 is in on the axis of draft tube 22.
Specifically, the draft tube 22 is installed in a profiled reed groove of the air jet loom and is positioned at the right weft arrival shed of the air jet loom.
The embodiment of the utility model provides an air jet loom woof drafting arrangement is a special draft spray tube, and the intake pipe 21 and the draft tube 22 of this spray tube have an angle in the axis direction, and intake pipe 21 axis and draft tube 22 axis are eccentric structure on the tangential direction, and eccentric distance is tangent the confirming by the hole of intake pipe 21 and the inner wall of draft tube 22. The device is assembled on one side where the weft yarn 1 arrives and is close to the position of warp yarn on a right shed, and when the device works, an electric control system of a weaving machine controls the opening and closing of the electromagnetic valve 4 according to the arrival time of the weft yarn 1, so that compressed air is controlled to enter a drafting device, when the compressed air enters the drafting device, due to the existence of the angle between the axis of the air inlet pipe 21 and the axis of the drafting pipe 22 and the eccentricity in the tangential direction, the compressed air forms a negative pressure zone 23 on the left side part of the drafting pipe 22, the weft yarn 1 is ensured to be sucked into the drafting pipe 22, a high-pressure vortex sprayed rightwards is formed inside the right side of the drafting pipe 22, and the weft yarn 1 passing through the negative pressure zone forms twisting action.
The pressure of compressed air entering the drafting and spraying device is adjusted by the electromagnetic valve 4, and the length of ventilation time is controlled to control the twisting quantity, when the twisting direction of weft yarn is Z-direction twist, the air inlet pipe 21 is positioned at the right side of the axis of the drafting pipe 22 in the same view direction, as shown in figure 3, when the twisting direction of weft yarn is S-direction twist, the air inlet pipe 21 is positioned at the left side of the axis of the drafting pipe 22 in the same view direction, as shown in figure 4.
The embodiment of the utility model provides an air jet loom woof drafting arrangement is that an axis has inclination, tangential has eccentric structure, import department to form the negative pressure, the exit forms the draft spray tube of rotatory vortex.
The draft tube 22 is installed in a profiled reed groove of an air jet loom, and the flying position of weft yarn is on the axis of the draft jet tube.
The draft tube 22 is installed at the right side of the loom where the weft yarn arrives at the shed, and the distance between the draft tube 22 and the shed warp yarn is extremely small, so that the weft yarn 1 is ensured to be smoothly sucked.
Compressed air is controlled to be on or off by a special air storage bag 5 through an electromagnetic valve 4, and the opening and closing time of the electromagnetic valve 4 is uniformly and coordinately controlled by an electric control system of the weaving machine.
The adjustment of the compensation amount of the twist loss of the weft yarn according to the different specifications of the weft yarn is realized by controlling the opening and closing time of the electromagnetic valve 4 and controlling the pressure of the compressed air entering the drawing tube 22.
The control of the weft yarn Z twisting and S twisting in two twisting directions is realized by respectively installing two different drafting spray pipes, and the eccentricity of the air inlet pipe 21 is arranged on the right side of the drafting pipe 22, namely on the right side of the weft yarn 1 when the weft yarn Z is twisted, as shown in figure 3. When the weft yarn 1 is twisted "S", the eccentricity of the air inlet pipe 21 is on the left side of the draft tube 22, i.e., on the left side of the weft yarn 1, as shown in fig. 4.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The weft yarn drafting device of the air jet loom is characterized by comprising a drafting tube and an air inlet tube, wherein an included angle is formed between the axis of the air inlet tube and the axis of the drafting tube when the axis of the air inlet tube and the axis of the drafting tube are projected on any plane, the included angle is an acute angle or an obtuse angle, the axis of the air inlet tube does not intersect with the axis of the drafting tube,
the left end of the drafting tube is used for sucking flying weft yarns,
the air inlet pipe is communicated with a compressed air source, the inclined direction of the air inlet pipe faces to the right end of the drafting pipe,
compressed air from the air inlet pipe directly flows to the right end of the drafting pipe, so that a negative pressure area is formed at the left end of the drafting pipe, the flying weft yarn is sucked, and the compressed air forms rotary airflow at the right end of the drafting pipe to twist the weft yarn, so that the twist lost in the free flying process of the weft yarn is compensated.
2. The weft yarn drafting device of the air jet loom according to claim 1, wherein the air inlet pipe is communicated with the compressed air source through a communicating pipeline, an electromagnetic valve is arranged on the communicating pipeline, and the pressure of the compressed air entering the air inlet pipe and the ventilation time are adjusted through the electromagnetic valve to control the twisting amount.
3. An air jet loom weft drafting device according to claim 2, wherein the solenoid valve is controlled by an electronic control system of the air jet loom.
4. The weft drafting device of an air jet loom according to claim 3, wherein an air storage bag is provided between the solenoid valve and the compressed air source.
5. The weft drafting device of an air jet loom of claim 4, wherein a pressure regulating valve is provided between the air reservoir and the compressed air source.
6. The weft yarn drawing device of the air jet loom of claim 1, wherein a side wall of the air intake pipe is tangent to a side wall of the drawing pipe.
7. An air jet loom weft yarn drafting device according to claim 1, wherein the air inlet tube is located on one side or the other of the axis of the draft tube.
8. An air jet loom comprising an air jet loom weft drafting apparatus according to any one of claims 1 to 7,
the air jet loom weft yarn drafting device is arranged at one end of the air jet loom where weft yarns arrive, and the flying position of the weft yarns is located on the axis of the drafting tube.
9. The air jet loom of claim 8, wherein the draft tube is installed in a profiled reed groove of the air jet loom and is located at a right weft arrival shed of the air jet loom.
10. The air jet loom of claim 8, wherein the weft yarn is fed forward in the direction in which the weft yarn enters the draft tube,
when the weft yarn is twisted in a Z shape, the eccentricity of the air inlet pipe is arranged on the right side of the drafting pipe, namely on the right side of the weft yarn,
when the weft yarn is twisted in an S shape, the eccentricity of the air inlet pipe is arranged on the left side of the drafting pipe, namely on the left side of the weft yarn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020674696.7U CN212611140U (en) | 2020-04-28 | 2020-04-28 | Air jet loom and weft yarn drafting device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020674696.7U CN212611140U (en) | 2020-04-28 | 2020-04-28 | Air jet loom and weft yarn drafting device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212611140U true CN212611140U (en) | 2021-02-26 |
Family
ID=74711881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020674696.7U Active CN212611140U (en) | 2020-04-28 | 2020-04-28 | Air jet loom and weft yarn drafting device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212611140U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364152A (en) * | 2020-04-28 | 2020-07-03 | 山东日发纺织机械有限公司 | Air jet loom and weft yarn drafting device thereof |
-
2020
- 2020-04-28 CN CN202020674696.7U patent/CN212611140U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364152A (en) * | 2020-04-28 | 2020-07-03 | 山东日发纺织机械有限公司 | Air jet loom and weft yarn drafting device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212611140U (en) | Air jet loom and weft yarn drafting device thereof | |
| CN105986351A (en) | Weft insertion control method and weft insertion apparatus in air jet loom | |
| CN111364152A (en) | Air jet loom and weft yarn drafting device thereof | |
| CN105133151B (en) | The Weft inserting device and its weft insertion technique of a kind of air-jet loom | |
| CN106757691A (en) | A kind of air-jet loom | |
| CN107366078B (en) | Extension nozzle for air jet loom and air jet loom | |
| EP0019784B1 (en) | An apparatus for inserting weft on an air jet loom | |
| JPS6452849A (en) | Apparatus for forming selvage of fabric in loom | |
| US3430664A (en) | Looms | |
| CN104762733A (en) | Textile auxiliary nozzle | |
| CN208087853U (en) | A kind of adjustable cam shedding water-jet loom of nozzle | |
| CN210341229U (en) | Injection device for water jet loom | |
| CN210711923U (en) | Seat-buckling oil nozzle for air-jet loom | |
| CN215561223U (en) | Stable heat dissipation dresser | |
| US3731713A (en) | Water jet loom | |
| JP2002061052A (en) | Tuck-in apparatus | |
| CN103696100A (en) | Pressure reducing throttle mechanism for air jet loom | |
| CN203602841U (en) | Depressurization and air-saving mechanism of air jet loom | |
| CN105155104A (en) | Energy-saving round hole auxiliary nozzle for air jet loom | |
| CN2670395Y (en) | Energy-saving valve mouth connector | |
| CN213507408U (en) | Automatic weft yarn protection device for air jet loom during parking | |
| CN213708653U (en) | Novel rapier loom | |
| CN210237924U (en) | Weft insertion device of loom | |
| CN109457371A (en) | For adjusting the device and method of the eject position of pilot jet in air-jet loom | |
| CN204211913U (en) | A kind of used in jet loom weft insertion device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |