JP2004203578A - Air dancer device for wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air dancer device having an air dancer part for storing hollow fiber membrane having at least predetermined length in a filament running part and, in particular, supplying filament securely and satisfactorily by quickly corresponding to change of demand amount in a machine such as a warp knitting machine using the filament such as the hollow fiber membrane as warp. <P>SOLUTION: The hollow fiber membrane 3 pulled out of a warp bobbin 1 is fed by a supply roller 6 and is introduced into the air dancer device B. In the air dancer part B, air stream 19 discharged from an air blower 11 is blown up from a pair of nozzles 14, 15. The hollow fiber membrane 3 is introduced from an introduction guide 16 formed in an air duct 12 and is conveyed in the air duct 12 by the air stream 19 to rise and run together with the air stream 19 from the nozzle 14. The hollow fiber membrane 3 is folded back upward and lowers and runs against the air stream from the nozzle 15 on the other side to draw a substantially parabola shape. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air dancer section for storing at least a filament having a predetermined length in a filament running section, and particularly to a processing machine such as a warp knitting machine using a filament such as a hollow fiber membrane having a low tensile tension as a weft. The present invention relates to an air dancer device capable of promptly responding to a change in the amount of demand in the above-mentioned item and enabling reliable and satisfactory supply.
[0002]
[Prior art]
Conventionally, in order to cope with fluctuations in demand in the knitting or knitting process, the filament has been used in the course of running along hollow fibers, ceramic yarns, ultrafine monofilaments, hollow fiber membranes, etc. as wefts. A device in which an air dancer device is provided in the middle of a transfer path is known.
[0003]
As shown in FIG. 5, a cylindrical body 75 is erected between a pair of left and right rollers 72, 74 for guiding the filament 72, and a pair of slits 76, 76 are formed in the cylindrical body 75 along the longitudinal direction of the cylindrical body 75. An air dancer device which is provided to face each other and has an injection port 78 of an air supply pipe 77 for injecting air into the cylinder at an upper end of the cylinder 75 and a suction port 80 of an intake pipe 79 at a lower end thereof (for example, see Patent Reference 1) has been proposed.
[0004]
As shown in FIG. 6, the traveling hollow fiber membrane 82 sent out from the feed roller 83 is blown upward together with air by the nozzle 84 in the air dancer section, dropped after being blown up, and formed into a parabolic curve of the hollow fiber membrane 82 in the air dancer section. A hollow fiber membrane knitting device that detects the apex position 87 by the detection sensors 85 and 86 and feeds back a detection signal detected by the detection sensors 85 and 86 to adjust the speed of the feed roller 83 (for example, see Patent Document 2) .) Has been proposed.
[0005]
In the air dancer device and the air dancer portion described in these Patent Documents 1 and 2, even when a hollow fiber having a low tensile tension is used as a filament, it is possible to quickly respond to a change in demand on the processing side, The hollow fiber can be stored in a good state without being cut, twisted, or crushed in the air dancer device.
[0006]
However, in the device described in Patent Document 1, it is necessary to provide an air injection port 78 and an air suction port 80 with respect to the cylinder 75 constituting the air dancer device, and the configuration as the air dancer device is increased in size. I had to help. In addition, a pair of slits 76 must be provided along the longitudinal direction of the cylinder 75 in order to store the filaments in the cylinder 75. For this reason, the air jetted from the jet port 78 jets out of the slits 76 and 76 to cause a disturbance in the flow of air in the cylinder 75, and the amount of storage of the filament 72 in the cylinder 75 varies. There was a fear of coming. Further, the storage amount of the filament 72 in the cylindrical body 75 cannot be observed from the outside, and even if the storage amount of the filament 72 in the cylindrical body 75 fluctuates, the detection result from the detection sensor does not change. Only the storage amount could be known.
[0007]
In the configuration of the air dancer described in Patent Literature 2, only one blow-up nozzle 84 that blows up the hollow fiber membrane 82 is disposed, so that the hollow fiber membrane 82 that is blown up falls on the falling side. Even if the trajectory is not stable and the position of the vertex 87 of the hollow fiber membrane 82 is the same, the storage amount in the air dancer portion fluctuates due to different falling trajectories.
[0008]
From these facts, in particular, as an air dancer device in a traveling section that conveys a filament such as a hollow fiber membrane having a low tensile tension, an air dancer device capable of stabilizing the storage shape in the air dancer device and allowing the storage state to be viewed from the outside. Development was desired.
[0009]
[Patent Document 1]
JP-A-7-25543 (abstract, paragraphs 0005 to 0011, 0014 to 0015, see FIGS. 1 to 3)
[Patent Document 2]
JP-A-6-210141 (paragraphs 0008 to 0012, see FIG. 1)
[0010]
[Problems to be solved by the invention]
The present invention is directed to an air dancer device for storing at least a predetermined length of a wire in a running portion of a wire having a low tensile tension. It is an object of the present invention to provide an air dancer device that can stabilize the shape of the stored filaments in the air conditioner.
[0011]
[Means for Solving the Problems]
The object of the present invention is achieved by the inventions described in claims 1 to 4 of the present application.
That is, the invention according to claim 1 of the present invention is directed to an air dancer device in the linear running section, which includes a nozzle for jetting an air flow that blows upward to the running linear line, and the air flow from the nozzle is at least the air flow. The filament air dancer device is characterized in that the filament is ejected to a substantially parabolic ascending traveling portion and a descending traveling portion drawn in the air dancer device.
[0012]
According to the present invention, in the air dancer device, by using the air flow in the region where the air flow ejected upward from the nozzle is acting, it is possible to always draw a substantially parabolic shape with respect to the filament. This makes it possible to always stabilize the storage form of the filaments in the air dancer device, and to accurately detect the vertex position of the filaments using the detection sensor arranged in the air dancer device. .
[0013]
As the air flow, it is necessary that at least the filaments are ejected to a substantially parabolic ascending traveling part and a descending traveling part drawn in the air dancer device, and air is also emitted to a substantially parabolic apex part. Streams can also be spouted. The nozzle may be configured, for example, as a mouth having one slit-shaped opening, so that the air flow is ejected from the ascending traveling portion to the descending traveling portion of the filament. Further, it is also possible to configure so that an opening for ejecting the air flow toward the ascending traveling portion of the wire and an opening for ejecting the air flow toward the descending traveling portion of the wire are separately provided.
[0014]
According to the present invention, for example, it is possible to quickly respond to a change in demand in the next process of a processing machine such as a knitting machine or a knitting machine, and furthermore, it is stored in a good state without twisting or crushing. can do.
[0015]
According to a second aspect of the present invention, in addition to the configuration according to the first aspect, a nozzle is formed at an end of an air duct through which an air flow discharged from the air blower passes, and the line is provided on the air duct. In a linear air dancer device, there are limited items provided with an introduction guide to be introduced into an air duct.
According to the present invention, the air flow discharged from the air blower is guided by the air duct, and is ejected upward from the nozzle, and an introduction guide for introducing the filament into the air duct is provided in the air duct, and the line introduced from the introduction guide is provided. The strip is transported in the air duct by an air flow, and is blown up from a nozzle. The blown up filament is bent in the sky, and then travels down against the airflow.
[0016]
It is also possible to provide a plurality of air blowers and guide the air flow discharged from each air blower through each air duct. At this time, the air flow spouted from each air duct is arranged so as to be spouted in the air dancer device into a section which is divided into a substantially parabolic shape, such as an ascending traveling portion, a vertex portion, and a descending traveling portion. You can also. Further, a plurality of filaments can be stored in the air dancer device, and an air blower and an air duct can be arranged for each filament.
[0017]
According to a third aspect of the present invention, in addition to the configuration of the second aspect, the air duct is bifurcated on the way to the end, and each end is provided with a nozzle for jetting an air flow upward. In a linear air dancer device.
According to the present invention, in the air dancer device, nozzles can be arranged on the ascending traveling side and the descending traveling side of a substantially parabolic-shaped filament, and the air flow discharged from one air blower is branched into two air streams. A duct can distribute to each of the above nozzles. This makes it possible to always keep the air flow ejected from the nozzle constant. The flow rate of the air flow ejected from the nozzle can be adjusted by changing the nozzle shape.
[0018]
According to a fourth aspect of the present invention, in addition to the configuration of the second or third aspect, a downwardly traveling line is provided at a portion of the nozzle which ejects an air flow to a substantially parabolic downward traveling portion drawn by a line in the air dancer portion. An air dancer device for a wire is provided in which a passage portion through which the wire is formed is limited.
According to the present invention, the line that travels downward against the airflow ejected upward passes through the nozzle that ejects the airflow and travels below the nozzle. At this time, a passage portion having a slit shape, a perforated shape, or the like is formed in the nozzle portion while the filament passes through the nozzle portion. Further, the passage portion can be formed by providing a damper or the like in the nozzle portion.
By forming the passage portion of the hollow fiber membrane in the nozzle portion, it is possible to allow the downwardly running line to come into contact with the nozzle and to run down in a straight line without bypassing the nozzle portion.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the accompanying drawings. In the present embodiment, an air dancer device in a knitting device using a hollow fiber membrane as a weft as a filament will be described, but the air dancer device of the present invention is not limited to the air dancer device in the knitting device described in the embodiment. However, the present invention can be effectively applied as an air dancer device in a running section of a filament. In addition, the present invention can be effectively applied as an air dancer device in a traveling section in which a hollow fiber, a ceramic thread, a carbon fiber, a very fine monofilament, or the like travels as a filament.
[0020]
FIG. 1 shows an overall schematic view of a knitting device using the air dancer device of the present embodiment. That is, as a knitting device, a supply unit A for supplying a hollow fiber membrane 3 which is a filament as a weft in knitting, an air dancer device B, a knitting machine C, a warp supply unit D, and a knitted hollow fiber knitted fabric 52 and a transport stacking section E.
[0021]
The supply section A of the hollow fiber membrane 3 is configured as follows.
One or more weft bobbins 1 are rotatably supported around an axis orthogonal to the rotation axis of the turntable 2 which can rotate. The shaft supporting the weft bobbin 1 is provided with a brake means 4 for applying a predetermined tension to the hollow fiber membrane 3 unwound from the weft bobbin 1. The hollow fiber membrane 3 is guided by a weft guide 5 and taken up by a supply roller 6.
[0022]
The hollow fiber membrane 3 taken up by the supply roller 6 is wound around the plurality of supply rollers 6 while being lightly pressed by the nip roller 7 and supplied to the air dancer device B. The supply roller 6 is driven by a supply motor 8 that is driven and controlled by a control device (not shown). As the supply motor 8, a control motor such as an inverter motor, a pulse motor, and a servomotor is used.
[0023]
The air dancer device B is configured as follows.
The air flow discharged from the air blower 11 is distributed to forked air ducts 12 and 13 and blows up the air flow 19 ejected from the respective nozzles 14 and 15. One air duct 12 is provided with an introduction guide 16 for introducing the hollow fiber membrane 3 sent out from the supply roller 6, and the hollow fiber membrane 3 introduced from the introduction guide 16 flows through the air duct 12 by the air flow 19. While being conveyed, it is blown up from the nozzle 14.
[0024]
When the hollow fiber membrane 3 is passed through, the tip of the hollow fiber membrane 3 blown up from the nozzle 14 is turned over in the air, and then is caused to travel downward against the airflow 19 blown out from the nozzle 15 so that the air dancer is moved. The hollow fiber membrane 3 in the device B has a substantially parabolic shape.
[0025]
The air flow 19 discharged from the air blower 11 is not branched into two by the air ducts 12 and 13 but passes through one air duct 17 as shown in FIG. May be formed so as to supply the air flow 19 between substantially parabolic shapes drawn by the hollow fiber membrane 3 in the air dancer apparatus B.
[0026]
FIG. 4 is a plan view showing some examples of the shape of the nozzle 20. In the above description, the protrusion 21 is formed on the inner peripheral surface of the outlet of the airflow 19 in the nozzle 20 as shown in FIG. Alternatively, a plurality of air streams 19 may be ejected from the nozzle 20. In this manner, the protrusions 21 are formed on the inner peripheral surface of the outlet portion of the nozzle, and a plurality of airflows are ejected, thereby changing the size of the outlet of the nozzle 20 to reduce the flow velocity of the plurality of airflows. Each can be different. In order to form a plurality of ejection ports instead of the protrusions, a grid-like rib or the like may be formed. Instead of the protruding portion, a plurality of holes 22 can be provided in the outlet portion as shown in FIG. As the shape of the hole 22, a long hole, a round hole, or the like can be formed. The large hole drawn on the right side of FIG. 4B is a hole through which the filament is blown up together with the air flow.
[0027]
In addition, in order to guide the line that travels downward after traveling upward in the air dancer apparatus B to the lower portion of the nozzle, the linear member passes through the linear member that travels downward to the portion of the nozzle that ejects airflow to the lower traveling portion of the line. The passing portion 23 is formed. Thus, the filament running downward can be stably lowered in the vertical state. The passage portion 23 may be formed in the nozzle 20 as shown in FIG. 2 independently of the flow path of the air flow, or the nozzle end may be bifurcated as shown in FIGS. 3 and 4C. It is also possible to configure a portion between the slits 24, which are divided into two portions, as a passage portion. Although not shown, a passage portion for the hollow fiber membrane 3 can be formed by providing a damper or the like in the nozzle portion.
[0028]
When a pair of nozzles 14 and 15 are used as shown in FIG. 1, two air blowers 11 may be provided, and one air blower may be provided for each nozzle. Further, a plurality of nozzles can be provided so that a plurality of filaments can be stored in the air dancer device.
[0029]
A detection sensor 18 for detecting the apex position of the hollow fiber membrane 3 as a line is provided in the air dancer device B, and the driving of the supply roller and the like can be controlled by the detection value of the detection sensor. In the embodiment of the present invention shown in FIG. 1, four detection sensors 18 are arranged. However, the number and positions of the detection sensors 18 are not limited to the example shown in FIG. The number can be arranged at a desired position.
[0030]
In the embodiment shown in FIG. 1, the detection sensor 18-1 detects the upper limit position of the amount of the hollow fiber membrane 3 deposited on the air dancer section B, and the detection sensor 18-4 detects the hollow fiber membrane 3 on the air dancer section B. 3 is to detect the lower limit position of the accumulation amount. The detection sensor 18-1 or the detection sensor 18-4 detects the apex position of the hollow fiber membrane 3, and when the detection signal is input to the control device 10, the control device 10 sends a drive stop signal to the supply motor 8. Emits. Accordingly, it is possible to prevent the knitting machine C from continuing to operate in a state where the hollow fiber membrane 3 is abnormally accumulated in the air dancer section B or an abnormally reduced accumulation amount. After stopping the knitting device, the abnormal state can be recovered by adjusting the yarn feeding system and the like.
[0031]
When the apex position of the hollow fiber membrane in the air dancer portion B becomes a position indicating an abnormal state, the running of the hollow fiber membrane 3 and the hollow fiber membrane knitted fabric in the knitting device other than the supply motor 8 may be stopped. it can.
[0032]
The detection sensor 18-2 and the detection sensor 18-3 detect the upper limit side and the lower limit side of the allowable range that can be deposited on the air dancer portion B. The detection sensor 18-2 determines the vertex position of the hollow fiber membrane 3. When the detection is performed, the control device 10 that receives the detection signal performs deceleration control of the supply roller 6 with respect to the supply motor 8 to reduce the storage amount of the hollow fiber membrane in the air dancer device.
[0033]
When the detection sensor 18-3 detects the apex position of the hollow fiber membrane 3, the control device 10, which has received the detection signal, controls the supply motor 6 to increase the speed of the supply roller 6 and controls the speed in the air dancer device. To increase the storage amount of the hollow fiber membrane.
[0034]
Accordingly, the storage amount can be kept within an appropriate range with respect to the increase or decrease of the storage amount in the air dancer device B.
As the detection sensor 18 in the air dancer apparatus B, a light emitter and a light receiver that face each other at right angles to the paper surface of FIG. 1 are installed. As the detection sensor 18, a laser sensor, a wire sensor, an optical fiber sensor, or the like can be used.
[0035]
The hollow fiber membrane 3 that has exited the air dancer device B is guided by guides 32 to 34 provided on a spring-loaded guide 31 and is introduced into a traverse guide 35, and moves up and down in synchronization with the traverse movement of the traverse guide 35 and this traverse movement. A knitting needle (not shown) hooks the warp 38 supplied from the warp supply section D to form a chain stitch while restraining the hollow fiber membrane 3 as a weft to form a knitted fabric 40.
[0036]
The formed knitted fabric 40 is taken up by the take-up roller and accumulated in the storage box 41 as a piled portion of the knitted fabric.
[0037]
In the embodiment of the present application, an example is described in which an air dancer device is arranged in a supply conveyance path using a hollow fiber membrane as a weft, but the air dancer device of the present invention and the filaments stored in the air dancer device are limited to the above example. Rather, it is possible to use various filaments having a low tensile tension as the filament, and as an air dancer device, a device that can be installed as long as it can be used as a dancer device in the transport path of the filament. is there.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing the overall configuration of the present invention.
FIG. 2 is a diagram showing another configuration of a nozzle.
FIG. 3 is a diagram showing a cross-sectional shape of a nozzle portion.
FIG. 4 is a plan view showing various shapes of a nozzle.
FIG. 5 is a schematic diagram showing an air dancer device in a conventional example.
FIG. 6 is a schematic view of a hollow fiber membrane knitting device in a conventional example.
[Explanation of symbols]
Reference Signs List 1 weft bobbin 2 turntable 3 hollow fiber membrane 4 brake means 5 weft guide 6 supply roller 7 nip roller 8 supply motor 11 air blower 12, 13 air duct 14, 15 nozzle 16 introduction guide 17 air duct 18-1 to 18-4 detection Sensor 19 Air flow 20 Nozzle 21 Protrusion 22 Hole 23 Passage 24 Slit 31 Spring-loaded guide 32 to 34 Guide 35 Traverse guide 38 Warp 40 Knitted fabric 41 Storage box 42 Take-up roll 71 Bobbin 72 Wire 73, 74 Roller 75 Tube Body 76 Slit 77 Air supply pipe 78 Injection port 79 Intake pipe 80 Intake port 81 Bobbin 82 Hollow fiber membrane 83 Feed roller 84 Nozzle 85, 86 Detection sensor 87 Apex position 88 Air blower 89 Guide 90 Traverse unit 91 Warp 92 Weft insertion guide Supply unit B Eadansa device Part C elevational machine D warp supply portion E transport deposition portion

Claims (4)

In the air dancer device in the linear running section,
Equipped with a nozzle that ejects an airflow that blows up against the running filament,
An air flow from the nozzle is ejected to at least a substantially parabolic ascending traveling part and a descending traveling part in which the filament is drawn in the air dancer apparatus. The nozzle is formed at an end of an air duct that allows an air flow discharged from an air blower to pass therethrough, and the air duct has an introduction guide that introduces the wire into the air duct. Item 1. An air dancer device for a wire according to Item 1. 3. The air dancer device according to claim 2, wherein the air duct is bifurcated on the way to the end, and each end is provided with a nozzle for jetting an air flow upward. In the air dancer device, a passage portion for passing the descended line is formed at a portion of the nozzle that ejects an airflow to a substantially parabola-shaped downward traveling portion drawn by the line. An air dancer device for a filament according to claim 2 or 3.

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