JP2008174333A - Method for unwinding filamentous material and unwinding device for filamentous material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for delivering a thread-like material capable of smoothly unwinding the thread-like material wound around a bobbin and enhancing the productivity even when a plurality of bobbins are coaxially arranged and the thread-like material is unwound and transferred from one bobbin to the other without increasing the diameter of the bobbins. <P>SOLUTION: A plurality of bobbins 22-24 with a thread 3 being wound therearound are arranged adjacent to each other with a shaft part 21 being common, and these bobbins 22-24 are rotatably supported at the same number of rotation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to, for example, a method for unwinding a filamentous material and an unwinding device for the filamentous material.

  Conventionally, when wefts and warps are supplied to various weaving machines, an unwinding device in which these warps and wefts are wound around a bobbin may be used. When the yarn wound around the bobbin is normally supplied to a knitting device or the like, when the yarn is pulled by a yarn feeding device or the like, the bobbin is rotated while being applied with a rotational force by a motor. The yarn is drawn out and sequentially supplied to the knitting machine.

By the way, the yarn wound around the bobbin is unwound in this way, and when the wound yarn disappears, it is necessary to replace it with a new bobbin, but the line must be stopped to replace the bobbin. Conventionally, the bobbin diameter is increased, the amount of yarn wound is increased, and the replacement frequency of the bobbin is decreased.
However, when the diameter of the bobbin is increased and the amount of yarn wound around the bobbin is increased in this way, the weight of the bobbin and the yarn increases, and there is a problem that conveyance and handling of the bobbin becomes difficult. Further, when the amount of yarn wound around the bobbin is increased, there is a problem that the influence of tightening is increased and the yarn is damaged.
On the other hand, as disclosed in Patent Document 1 on the yarn winding device side, it is also considered to arrange a plurality of bobbins with a common axis.
JP 2005-89173 A

  However, when the arrangement structure of the bobbin of the winding device is applied to the unwinding side in this way, the thread of a certain bobbin is lost, and when the thread is pulled out from the next bobbin, the bobbin is wound around the first bobbin. There is a problem that it is difficult to make a smooth transition from the end of the wound yarn to the beginning of the yarn wound around the next adjacent bobbin. Therefore, as a result, when a transition is made from one bobbin to the next bobbin, the yarn supply speed must be reduced to some extent, and there is a problem that the production efficiency is reduced.

  In view of this, the present invention provides a method for winding a thread-like material wound around a bobbin even when a plurality of bobbins are coaxially arranged and shifted from one bobbin to another without increasing the diameter of the bobbin. It is an object of the present invention to provide a thread-like material unwinding method and a thread-like material unwinding device capable of smoothly unwinding and improving productivity.

In order to achieve the above object, the invention described in claim 1 includes a plurality of bobbins (for example, the first bobbin 22 and the second bobbin in the embodiment) around which a thread-like material (for example, the yarn 3 in the embodiment) is wound. The bobbin 23 and the third bobbin 24) are arranged adjacent to each other with a common shaft (for example, the shaft portion 21 in the embodiment), and the plurality of bobbins are rotatably supported at the same rotational speed. .
By comprising in this way, it becomes possible to wind many filamentous materials as a whole, reducing the quantity of the filamentous material wound around each bobbin. Moreover, the winding amount of the filamentous material with respect to one bobbin can be reduced, and winding tightening can be prevented.

According to the second aspect of the present invention, among the adjacent bobbins, the winding end of the thread of the bobbin that first unwinds the thread (for example, the winding end 22E, 23E in the embodiment), and then the thread It is characterized in that a yarn splicing portion (for example, the splicing portions 39 and 40 in the embodiment) for connecting to the winding start end (for example, the winding start ends 23S and 24S in the embodiment) of the bobbin to be unwound is provided.
By comprising in this way, it becomes possible to supply to the back | latter stage apparatus continuously by making the filamentous material wound around each bobbin into one line.

The invention described in claim 3 is characterized in that a control mechanism (for example, control mechanism S in the embodiment) for controlling the position of the filaments unwound from the bobbin is provided.
With this configuration, when the filamentous material is sequentially unwound from one bobbin, the yarn path of the filamentous material changes because the filamentous material is unwound from the next bobbin. This makes it possible to unwind the optimum filamentous material.

According to a fourth aspect of the present invention, the control mechanism is provided with sensors (for example, the first photoelectric sensor 51 and the second photoelectric sensor 52 in the embodiment) that detect that the bobbin has been switched. Features.
With this configuration, when the sensor detects that the bobbin from which the filamentous material is unwound is changed, it can follow the change in the yarn path of the filamentous material correspondingly.

The invention described in claim 5 is characterized in that the filamentous material is a hollow fiber membrane.
By comprising in this way, the damage by winding with respect to a hollow fiber membrane can be reduced, and the knitted fabric by the hollow fiber membrane with high product quality can be obtained.

  According to a sixth aspect of the present invention, a plurality of bobbins wound with filaments are arranged adjacent to each other with a common axis, and the plurality of bobbins are rotatably supported at the same rotational speed, and the adjacent bobbins Among these, the thread-like material wound around each bobbin is provided with a yarn splicing portion for connecting the winding end of the thread-like material of the bobbin from which the thread-like material is first unwound to the winding start end of the bobbin from which the thread-like material is subsequently unwound. Is a method of unwinding a thread-like material that is continuously unwound, where the thread-like material of the bobbin where the thread-like material is unwound first disappears and the thread-like material of the next bobbin is unwound through the spliced portion. The yarn path change detecting step for detecting the change in the yarn path, and a guide member for guiding the thread-like material unwound from the bobbin in the subsequent stage in accordance with the change in the yarn path detected in the yarn path change detecting step to change the yarn path. And a guide member displacing step for displacing them together. .

According to the first aspect of the present invention, it is possible to wind a large number of filamentous materials as a whole while reducing the amount of filamentous material wound around each bobbin. There is an effect that can be improved. Moreover, since the amount of winding of the filamentous material with respect to one bobbin can be reduced and winding tightening can be prevented, there is an effect that product quality can be improved without damaging the filamentous material.
In the invention described in claim 2, since it becomes possible to continuously supply the yarn-like material wound around each bobbin to the subsequent apparatus, it is possible to continuously reduce the bobbin replacement frequency and continuously form the yarn-like material. There is an effect that can be sent out.
According to the third aspect of the present invention, when the filamentous material is sequentially unwound from one bobbin, the filamentous material is unwound from the next bobbin so that the yarn path of the filamentous material changes. Thus, the control device enables the optimum unwinding of the filamentous material, so that the unwinding of the filamentous material from each bobbin can be ensured smoothly.
According to the invention described in claim 4, when it is detected by the sensor that the bobbin around which the filamentous material is unwound is changed, the change in the yarn path of the filamentous material can be followed correspondingly, There is an effect that a smooth thread can be unwound.
According to the fifth aspect of the present invention, the damage caused by tightening the hollow fiber membrane can be reduced, and a knitted product of the hollow fiber membrane with high product quality can be obtained. It is suitable as a dispensing device.
According to the invention described in claim 6, the bobbin to be unwound is changed when the unwinding of the thread is shifted from one bobbin to the next bobbin while continuously unwinding the thread. The yarn path change detecting means can quickly detect this, and the guide member can be unwound smoothly by changing the guide position corresponding to the guide member in the guide member displacement step.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an unwinding device 2 provided in a hollow fiber membrane knitting device 1. The hollow fiber membrane knitting device 1 is a hollow fiber membrane used in a water purification facility or the like for filtering a suspension contained in a liquid such as river water, lake water, well water, sewage, irrigation water, waste water, etc. It is for manufacturing knitting.

  The hollow fiber membrane knitting device 1 includes an unwinding device 2 having a bobbin 4 around which a yarn (weft) 3 that is a hollow fiber membrane is wound. The unwinding device 2 can wind a large number of hollow fiber membranes in order to produce a knitted fabric made of a hollow fiber membrane. A Russell knitting machine (not shown) is provided at the subsequent stage of 5. The dancer roll 5 includes a pair of guide rolls 5a and 5a and a tension roll 5b between the guide rolls 5a and 5a. The tension roll 5b applies tension to the yarn 3 and the tension roll 5b allows the yarn 3 The amount of slack is adjusted.

The raschel knitting machine is supplied with the yarn 3 wound around the bobbin 4 and reciprocally moves the yarn 3 with respect to a warp yarn (not shown) to produce a relatively wide hollow yarn membrane knitted fabric.
The unwinding device 2 includes a bobbin 4 and a guide roll 6 that secures a yarn path by guiding the yarn 3 unwound from the bobbin 4 from below. A standby bobbin 4 ′ is disposed beside the bobbin 4, and can be replaced with the standby bobbin 4 ′ when the yarn 3 wound around the bobbin 4 becomes empty.

  As shown in FIG. 2, the unwinding device 2 includes a shaft portion 21 at the lower portion of the device main body 20. The bobbin 4 is provided on the shaft portion 21. The bobbin 4 includes a first bobbin 22, a second bobbin 23, and a third bobbin 24 that are sequentially arranged from the apparatus main body 20 side. The three bobbins 22 to 24 are arranged adjacent to each other and coaxial with the shaft portion 21. Supported on top. Here, the bobbins 22 to 24 may be closely arranged. The bobbins 22 to 24 are configured such that all the bobbins 22 to 24 can be rotated at the same rotational speed by rotating the shaft portion 21 by a motor 25 provided in the apparatus main body 20. Each bobbin is provided with a collar at both ends, and a thread 3 is wound around the shaft portion.

  Specifically, the shaft portion 21 is linked to the rotating shaft 26 of the motor 25 via a speed reducer 27, and the rotational speed is adjusted by controlling the motor 25 via a controller (not shown). Further, the shaft portion 12 is provided with a brake device 30 that sandwiches a disk rotor 28 that rotates together with the shaft portion 21 with a pad 29, and the first bobbin 22 and the second bobbin 23 are interposed via the motor 25 and the brake device 30. The third bobbin 24 rotates at the same number of rotations as set and at the number of rotations.

  A roll shaft 31 is supported on the upper portion of the apparatus main body 20 in parallel with the shaft portions 21 of the bobbins 22 to 24. A single guide roll 6 is rotatably supported on the roll shaft 31 and slidably supported. A guide rail 33 is disposed above the roll shaft 31 in parallel with the roll shaft 31, and a slider 34 is supported on the guide rail 33 so as to be movable.

The slider 34 supports two rollers 35, 35, 36, and 36 each of which moves up and down with respect to the guide rail 33. The slider 34 is provided with a motor 32, and a part of the rollers (for example, the right rollers 35 and 36 in FIG. 2) is linked to the motor 32 so as to be rotatable. The slider 34 is guided via the motor 32. It can move along the rail 33.
Here, the guide roll 6 has the first bobbin 22, the second bobbin 23, and the third bobbin 24 with the yarn 3 wound around the first bobbin 22, the second bobbin 23, and the third bobbin 24. Whatever the position, the yarn path is secured so that the yarn 3 can be smoothly guided to the subsequent stage. The first position A and the first position A corresponding to the positions of the bobbins 22 to 24 are provided. It is possible to stop at position 2 and position 3 of the second position.

An arm 37 is attached to the slider 34 in a suspended state, while a collar member 38 is attached to the roll shaft 31 integrally with the guide roll 6. The lower end of the arm 37 is fixed to the collar member 38.
Accordingly, when the slider 34 moves along the guide rail 33, the guide roll 6 can slide along the roll shaft 31 via the arm 37 and the collar member 38, so that the guide roll 6 is moved to each of the bobbins 22 to 24. If it moves to the corresponding position, the first position A, the second position B, and the third position C, the thread 3 unwound from each bobbin 22-24 is guided from the lower side at the optimum position, A yarn path that fluctuates within the range of the widths of the bobbins 22 to 24 can be secured.

  Here, the winding start end 22 </ b> S of the yarn 3 of the first bobbin 22 reaches the guide roll 6, and the winding end end 22 </ b> E of the yarn 3 of the first bobbin 22 is pulled out to be adjacent to the first bobbin 22. The second bobbin 23 is connected to the winding start end 23S of the yarn 3 via a yarn splicing portion 39. The yarn winding end 23E of the second bobbin 23 connected to the first bobbin 22 via the yarn splicing part 39 is pulled out to the outside, and the yarn of the third bobbin 24 adjacent to the second bobbin 23. Is connected to the winding start end 24 </ b> S via a yarn splicing portion 40. As a result, the yarn 3 becomes a single line in the range from the bobbins 22 to 24.

  Accordingly, the yarn 3 is routed from the inside of the shaft of the first bobbin 22 toward the outside of the shaft of the second bobbin 23 at the yarn joining portion 39 of the first bobbin 22 and the second bobbin 23. In the yarn splicing portion 40 of the second bobbin 23 and the third bobbin 24, the yarn 3 is routed from the inner side of the second bobbin 23 to the outer side of the third bobbin 24. .

  Here, between the roll shaft 31 and the shaft portion 21 of the bobbins 22 to 24, between the first bobbin 22 and the second bobbin 23 and between the second bobbin 23 and the third bobbin 24. In addition, a first photoelectric sensor 51 and a second photoelectric sensor 52 are arranged respectively. The first photoelectric sensor 51 and the second photoelectric sensor 52 detect the yarn 3 that is a hollow fiber membrane in a non-contact manner, and detect this when the yarn 3 blocks the optical path.

Specifically, in the first photoelectric sensor 51, when the yarn 3 of the first bobbin 22 becomes empty and moves to the second bobbin 23, the yarn path changes to be within the width of the second bobbin 23. The second photoelectric sensor 52 detects the arrived yarn 3, and the yarn path changes when the yarn 3 of the second bobbin 23 becomes empty and moves to the third bobbin 24, and the third bobbin changes. The yarn 3 reaching the width of 24 is detected. That is, the first photoelectric sensor 51 detects the switching from the first bobbin 22 to the second bobbin 23, and the second photoelectric sensor 52 detects the switching from the second bobbin 23 to the third bobbin 24. To do.
The above-described guide rail 33, slider 34, arm 37, roll shaft 31, guide roll 6, first photoelectric sensor 51, second photoelectric sensor 52, and controller (not shown) constitute a control mechanism S.

Next, the operation will be described.
As shown in FIG. 3, the yarn 3 unwound from the first bobbin 22 of the bobbin 4 rotating in a state in which the rotation speed is controlled via the motor 25, the speed reduction device 27, and the brake device 30 is the first Guided by the guide roll 6 located at the position A and sent to the dancer roll 5 at the subsequent stage, the slack is adjusted by the guide rolls 5a and 5a of the dancer roll 5 and the tension roll 5b and sent to the Russell knitting machine And knitted into warp. As a result, a wide knitted hollow fiber membrane is obtained.
Here, when the yarn 3 of the first bobbin 22 is lost and the unwinding of the yarn 3 starts from the second bobbin 23 connected through the yarn splicing portion 39, the unwinding of the second bobbin 23 starts. The first photoelectric sensor 51 detects that the yarn path has changed (yarn path change detection step).

Then, based on the detection signal of the first photoelectric sensor 51, the motor 32 is driven via a controller (not shown), the motor 32 drives the rollers 35 and 36 to move the slider 34, and the guide roll 6 is moved to the first position. Move from A to the second position B (guide member displacement step). As a result, the yarn path is changed to a path that does not overwork toward the guide roll 6 located above the second bobbin 23, and the width of the second bobbin 23 is changed by the guide roll 6 at the second position B. The yarn 3 unwound from within the range of directions is reliably guided and sent to the dancer roll 5.
That is, when the yarn 3 is unwound from the second bobbin 23 while the guide roll 6 remains in the first position A and does not move, the yarn 3 comes into sliding contact with the collar of the second bobbin 23 and the yarn 3 is Since the guide roll 6 is moved, the yarn 3 is prevented from being damaged.

Similarly, when the yarn 3 of the second bobbin 23 disappears and the unwinding of the yarn 3 starts from the third bobbin 24 connected via the yarn splicing portion 40, the unwinding of the third bobbin 24 starts. In addition, the second photoelectric sensor 52 detects that the yarn path has changed (yarn path change detection step).
Then, in the same manner as described above, the motor 32 is driven based on the detection signal of the second photoelectric sensor 52, and this time the slider 34 drives the rollers 35 and 36 to move the slider 34 from the second position B to the third position. Move to position C (guide member displacement step). As a result, the yarn path is changed to a path that does not overwhelm toward the guide roll 6 located above the third bobbin 24. It is reliably guided by the guide roll 6 at the third position C and sent to the dancer roll 5. When all the yarns 3 of the first bobbin 22, the second bobbin 23, and the third bobbin 24 constituting the bobbin 4 are lost, the bobbin 4 is replaced with the standby bobbin 4 ′, and the standby operation is performed in the same manner. The thread 3 is unwound from the bobbin 4 '.

  According to the embodiment, the first bobbin 22, the second bobbin 23, and the third bobbin 24 around which the yarn 3 is wound are disposed adjacent to each other with the shaft portion 21 in common, and the plurality of bobbins 22 to 24 are disposed. Is supported so as to be rotatable at the same rotational speed, it becomes possible to wind many yarns 3 as a whole while reducing the amount of the yarn 3 wound around each of the bobbins 22 to 24. Therefore, the productivity of the knitted fabric in the hollow fiber membrane knitting device 1 fed through the dancer roll 5 in the subsequent stage can be increased. Moreover, since the winding amount of the thread | yarn 3 with respect to each bobbin 22-24 decreases, winding tightening can be prevented, the damage given to the thread | yarn 3 can be minimized, and product quality can be improved. Therefore, it is suitable when applied to the unwinding device 2 of the hollow fiber membrane that dislikes damage in nature.

  Since the yarn splicing portions 39 and 40 are provided between the first bobbin 22 and the second bobbin 23 and between the second bobbin 23 and the third bobbin 24, the yarn wound around each of the bobbins 22 to 24 It becomes possible to supply continuously, taking 3 as one item. Therefore, it is possible to continuously feed out the yarn 3 while reducing the replacement frequency of the bobbin 4.

  When the position of the yarn 3 unwound from each bobbin 22 or 23 changes to the next bobbin 23 or 24, the yarn path changes. This is optimal because the position of the guide roll 6 can be changed in response to this change. It is possible to secure a thread path for the long thread 3. Therefore, the yarn 3 can be smoothly unwound from each of the bobbins 22 to 24. Here, since the change of the yarn path, that is, the switching to the bobbins 23 and 24 can be detected by the first photoelectric sensor 51 and the second photoelectric sensor 52, the change of the thread path of the yarn 3 is correspondingly detected. The guide roll 6 can be followed. Therefore, smooth unwinding of the yarn 3 can be performed.

  Therefore, when the yarn 3 is a hollow fiber membrane, damage due to tightening is reduced, and a knitted product of a hollow fiber membrane with high product quality is obtained. Therefore, the unwinding device 2 for the yarn 3 of the hollow fiber membrane knitting device is obtained. It is suitable as.

  The present invention is not limited to the above embodiment. For example, a mechanism for driving the shaft portion 21 is an example, and any mechanism can be used as long as the bobbins 22 to 24 can be rotated at the same rotational speed. May be adopted. Also, various structures such as moving the roll shaft 31 itself can be adopted for the mechanism for adjusting the position of the guide roll 6.

1 is a side view of an embodiment of the present invention. It is a principal part enlarged front view of this invention. It is a front view which shows the operation state of FIG.

Explanation of symbols

3 Thread (Filament)
21 Shaft (shaft)
22 First bobbin (bobbin)
22E End of winding 23 Second bobbin (bobbin)
23E Winding end 23S Winding end 24 Third bobbin (bobbin)
24S Winding start end 39, 40 Yarn splicing part 51 First photoelectric sensor (sensor)
52 Second photoelectric sensor (sensor)
S control mechanism

Claims (6)

  An unwinding device for a filamentous material, characterized in that a plurality of bobbins wound with a filamentous material are arranged adjacent to each other with a common axis, and the plurality of bobbins are rotatably supported at the same rotational speed.   Among the adjacent bobbins, there is provided a yarn splicing portion for connecting the winding end of the bobbin that first unwinds the thread to the winding start end of the bobbin that unwinds the thread. The unwinding device for a filamentous material according to claim 1.   3. A thread-like material unwinding device according to claim 2, further comprising a control mechanism for controlling the position of the thread-like material unwound from the bobbin.   4. The yarn-like material unwinding device according to claim 3, wherein the control mechanism is provided with a sensor for detecting that the bobbin is switched.   The filamentous material unwinding device according to any one of claims 1 to 4, wherein the filamentous material is a hollow fiber membrane.   A plurality of bobbins wound with filaments are arranged adjacent to each other with a common axis, and the plurality of bobbins are rotatably supported at the same rotational speed, and the filamentous material is first unwound from the adjacent bobbins. Winding of the filamentous material that continuously unwinds the filamentous material wound around each bobbin by providing a yarn splicing portion for connecting the end of winding of the filamentous material of the bobbin to the winding start end of the bobbin for unwinding the filamentous material A thread path change detecting step for detecting a change in a thread path when the thread of the bobbin from which the thread is first unwound is eliminated and the thread of the next bobbin is unwound through the yarn splicing portion. And a guide member displacing step of displacing a guide member that guides the thread-like material unwound from the bobbin on the rear side in accordance with the change of the yarn path detected in the yarn path change detecting step in accordance with the change of the yarn path. A method for unwinding a filamentous material, comprising:

Images