JPH105552A - Hollow-fiber membrane feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hollow-fiber membrane feeder capable of safely supplying a hollow-fiber membrane drawn out intermittently by a succeeding stage. SOLUTION: A hand 10 (first holding means) is opened, and a hand 12 (second holding means) is operated to hold a hollow-fiber membrane 3. A draw-out means 11 is moved to position P2 to draw the membrane 3 from the upstream side of a transportation line H1 so that a buffer part B is formed, the hand 10 is operated to hold the membrane 3, the hand 12 is operated and the draw-out means 11 is moved to position P1 away from the line H1, and the membrane at the buffer part B is supplied to the succeeding stage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow fiber membrane supply apparatus which can supply a hollow fiber membrane from a bobbin wound with a hollow fiber membrane to a subsequent step without deteriorating the quality of the hollow fiber membrane. In particular, it is suitable for a use state that is intermittently pulled out.

[0002]

2. Description of the Related Art In processing and assembling a hollow fiber membrane into a hollow fiber membrane module and the like, the hollow fiber membrane itself as a raw material is usually stored in a state wound around a bobbin, and is unwound from the bobbin. It's being used.

[0003] The hollow fiber membrane is very easy to break unlike ordinary cord-like members (yarn, wire, etc.), and the occurrence of scratches or breaks has a significant effect on the function of the manufactured product. It needs to be handled with care.

[0004] FIG. 3 is a diagram showing a configuration of the present invention by the applicant of the present invention.
No. 01 is a yarn sending device 101 for a hollow fiber membrane disclosed in No. 01. The bobbin 102 used in this apparatus has a large diameter of, for example, about 40 cm. The bobbin 102 is placed on the base 103 without rotating.

[0005] The hollow fiber membrane 104 is connected from the bobbin 102 to a rotating shaft 105 located on the axis of the bobbin 102, and is rotatably provided so as to revolve around the outer periphery of the bobbin 102 (as indicated by an arrow A101). Rewind arm 10
6 rewinds.

The rewind arm 106 has a hollow fiber membrane 10
Guide rollers 107a, 1 serving as guides for the transport path No. 4
07b is provided. The hollow fiber membrane 104 is further transported to a subsequent process via a guide member 108 and a guide roller 109 located on the axis of the bobbin 102.

Further, the yarn delivery device 101 for this hollow fiber membrane
In fact, the hollow fiber membrane 104 fed out by supplying a plurality of hollow fiber membranes has increased the apparent strength of the hollow fiber membrane to be rewound, so that the thread breaks, scratches, and crushing may occur. This phenomenon did not occur as a major problem.

[0008] Then, the yarn delivery device 10 for this hollow fiber membrane is provided.
In 1, the hollow fiber membrane feeding device 101 is driven by a hollow fiber membrane 104 drawn out in a later step, which requires no power and that the hollow fiber membrane 104 supplied in the later step is driven. When pulling out is stopped, there is an advantage that the tension applied to the hollow fiber membrane 104 is small.

[0009]

However, since the driving force for rotating the rewind arm 106 is transmitted through the hollow fiber membrane 104 by drawing out in the post-process, the transport speed in the post-process changes, and the driving force for holding / When the transport start is repeatedly performed (that is, when the hollow fiber membrane is intermittently pulled out), the tension applied to the hollow fiber membrane 104 changes greatly each time. May result in a hollow fiber membrane in a state where uneven tension is applied in the length direction, and may cause scratches, crushing, and thread breakage.

[0010] Further, since the rewind arm 106 unwinds the hollow fiber membrane while rotating, the hollow fiber membrane may be twisted, causing a problem in the function of the product and a problem in the manufacture of the product. is there.

Generally, in order to solve such a problem, a tension controller 110 is interposed in the middle of the transport path so as to keep the tension of the hollow fiber membrane 104 within a certain range as shown in FIG. An ON switch 111a and an OFF switch 111b are provided near the upper and lower limit positions of the movement range of the tension controller 110, and the driving means (not shown) is driven by these switches to rotate the bobbin 102 in the direction of arrow A102, thereby forming the hollow fiber membrane. It is conceivable to adopt a method of supplying.

However, even in this configuration, the tension by the tension controller 110 is always applied to the hollow fiber membrane 104 and the moment of inertia generated when the tension controller 110 is moved and held by being intermittently withdrawn from a subsequent process. Is added to the hollow fiber membrane 104, there is a danger of uneven tension, scratches, crushing, thread breakage, etc., though not as much as in the configuration of FIG.

In particular, when the withdrawal in the post-process is suddenly started, a trouble occurs in any of the configurations shown in FIGS.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art. It is an object of the present invention to minimize the tension applied to the hollow fiber membrane and to reduce the problems of yarn breakage, scratching and crushing. A hollow fiber membrane capable of maintaining a quality without causing a twist and providing a hollow fiber membrane in a state without twisting, and in particular, a hollow fiber membrane capable of safely supplying a hollow fiber membrane that is intermittently drawn out in a later process. To provide a supply device.

[0015]

In order to achieve the above object, according to the present invention, a bobbin around which a hollow fiber membrane is wound is rotated and unwound while controlling the tension of the hollow fiber membrane. A driving means for supplying the hollow fiber membrane, a transport path for transporting the rewinded hollow fiber membrane to the subsequent process, and a tension path of the hollow fiber membrane are arranged in this order from the upstream side of the transport path. Tension adjusting means for holding the hollow fiber membrane,
The holding means and the hollow fiber membrane approaching from a position distant from the transport path, contacting the hollow fiber membrane, further pressing the hollow fiber membrane from the upstream side, and bypassing the hollow fiber membrane from the transport path in a loop. A drawer for forming a buffer portion; and a second holding means for holding and holding the hollow fiber membrane. The first holding means is opened, and the second holding means is operated to operate the hollow fiber membrane. Holding the fiber membrane, and in this state, controlling the pull-out means to pull out the hollow fiber membrane from the upstream side of the transport path to form a buffer portion, and operating the first holding means to hold the hollow fiber membrane; Opening the second holding means, moving the drawing means to a position away from the transport path to separate from the hollow fiber membrane, and supplying the hollow fiber membrane from the buffer section of the hollow fiber membrane in this state Do control Characterized by comprising a stage, a.

According to this configuration, when the hollow fiber membrane is drawn out in a later step, the hollow fiber membrane can be supplied in a tension-free state without twisting.

The control means performs control in synchronism with the post-process in which the hollow fiber membrane is intermittently drawn out, and when the drawing out of the hollow fiber membrane is stopped in the post-process, (1) opening the holding means, operating the second holding means to hold the hollow fiber membrane, and in this state, pulling out the hollow fiber membrane from the upstream side by the drawing means so that a buffer portion can be formed; When the hollow fiber membrane is pulled out from the apparatus, the first holding means is operated to hold the hollow fiber membrane, the second holding means is opened, and the drawing means is moved to a position away from the transport path. The hollow fiber membrane may be separated from the hollow fiber membrane to supply the hollow fiber membrane from the buffer section of the hollow fiber membrane in this state.

Since the control means performs the control in synchronization with the post-process, the supply of the hollow fiber membrane can be supplied without delay at the timing required for the post-process, and it is apparently intermittent. However, the supply of the hollow fiber membrane is continuously performed as a relation with the post-process.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments.

FIG. 1 is a diagram illustrating the configuration of a hollow fiber membrane supply device 1 to which the present invention is applied. Reference numeral 2 denotes a bobbin covered with a hollow fiber membrane, which is fixed to a rotating shaft provided in a driving unit (not shown), and supplies a hollow fiber membrane 3.

The hollow fiber membrane 3 is transported on a transport path H1 that is continuous from the hollow fiber membrane supply device 1 to a subsequent process, and is transported along guide paths provided at appropriate positions along the transport path H1. The direction has changed.

As the guide means, two pairs of two pairs of rollers opposing each other with the guide roller 4 and the transport path H1 interposed therebetween are arranged close to each other so as to be orthogonal to each other (which looks like a well when viewed from the transport direction). Mold guides 5, 6, 7, 8 are provided.

In order to supply the hollow fiber membrane wound on the bobbin 2 to a subsequent process without causing any damage, breakage, or excessive tension, the following configuration is provided.

Reference numeral 9 denotes a tension controller that strokes in the direction of arrow A1, and is disposed at a position closest to the bobbin 2, and constantly urges the hollow fiber membrane 3 downward with a constant urging force in FIG. This urging force can be generated by the weight of the tension controller 9 itself or a spring (not shown).

The bobbin 2 is rotated in the direction of arrow A2 by the driving means, and the hollow fiber membrane 3 is rewound and supplied. The on / off control of the driving means is not shown, but is performed by the tension controller 9 (not shown). According to the position information, the driving means is turned on when it is at the upper predetermined position and turned off when it reaches the lower predetermined position. Therefore, the tension of the hollow fiber membrane is controlled within a certain range.

Reference numeral 10 denotes a hand as first holding means for holding and holding the hollow fiber membrane 3 and is disposed between the well guides 5 and 6. This hand 10 is provided with cylinders 10a for directly moving a pad 10b sandwiching the hollow fiber membrane 3 on both sides of the hollow fiber membrane 3 so that the hollow fiber membrane 3 can be held without being deformed or crushed. Is possible.

Numeral 11 is arranged between the well guides 6 and 7 and makes a stroke as indicated by an arrow A3. The stroke 11 comes close to the position P1 farther from the transport path H1 and abuts on the hollow fiber membrane 3, and further the stroke Is continuously pushed to the position P2, the hollow fiber membrane 3 is pulled out from the upstream side, and the conveyance path H1
This is a drawing means for forming a buffer portion B of the hollow fiber membrane 3 which is detoured in a loop form from.

Reference numeral 12 denotes a hand disposed downstream of the well guide 7 and has the same configuration as the hand 10.

The hands 10, 12 and the pull-out means 11 are controlled by a control means (not shown) so as to be in the following operation state.

FIG. 2 is a diagram for explaining the operating state of the hollow fiber membrane supply device 1. In this embodiment, the post-process intermittently pulls out the hollow fiber membrane, and in FIG.
When the drawing of the hollow fiber membrane is stopped by a post process,
By moving the pulling means 11 from the position P1 to the position P2, the hollow fiber membrane 3 is drawn from the upstream side to form a buffer portion B which is detoured in a loop.

At this time, the first holding means is opened, and the second holding means is operated to hold the hollow fiber membrane in the post-process side. The influence is cut off, and the hollow fiber membrane is not pulled out from the post-process side. The hollow fiber membrane 3 pulled out by the movement of the pulling means 11 receives the tension of the tension controller 9, but the influence from the post-process side is cut off, so that the hollow fiber membrane is damaged, crushed, broken, etc. It is possible to easily maintain the quality without causing any problem.

FIG. 2B is a view showing a state in which the hollow fiber membrane 3 is drawn out in a later step. At this time, the first holding means is operated to hold the hollow fiber membrane 3 on the upstream side of the buffer section B, and the second holding means is opened.

Further, the drawer 11 which has been lowered to the position P2 in FIG.
In this state, no tension is applied to the hollow fiber membrane 3, and the drawing in the subsequent process is awaited.

Therefore, when the hollow fiber membrane 3 is pulled out in a later step, the hollow fiber membrane 3 of the tension-free buffer section B without kinks is drawn out.

By performing the operations shown in FIGS. 2 (a) and 2 (b) in synchronization with the timing of intermittent withdrawal from the subsequent process, the hollow fiber membrane can be supplied continuously. is there.

In this embodiment, the specific configuration of the post-process is not particularly described. For example, a process of winding the hollow fiber membrane around an elliptical bobbin that rotates with a pause operation, When a woven fabric is formed using a membrane as a weft, the present invention can be applied to a step of supplying a hollow fiber membrane along with a shuttle operation for reciprocating to the left and right ends of the weave width.

[0037]

According to the hollow fiber membrane supply device of the present invention, when the hollow fiber membrane is rewound from the bobbin, it is unwound by a stable and constant tension without being affected by the subsequent process. . Then, when the hollow fiber membrane is pulled out in a post-process, the tension is pulled out without any tension being applied to the hollow fiber membrane.Therefore, there is no problem of thread breakage, scratching, and crushing, and there is no twist. The quality of the hollow fiber membrane is maintained.

Further, by controlling the operation of the hollow fiber membrane supply device in synchronization with the intermittent withdrawal in the post-process, the hollow fiber membrane can be continuously supplied.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a hollow fiber membrane supply device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating the operation of the hollow fiber membrane supply device.

FIG. 3 is a conventional hollow fiber membrane supply device.

FIG. 4 is a conventional hollow fiber membrane supply device provided with a tension controller.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hollow fiber membrane supply device 2 Bobbin 3 Hollow fiber membrane 4 Guide roller 5, 6, 7, 8 Well guide 9 Tension controller 10, 12 Hand (holding means) 10a Cylinder 10b Pad 11 Pull-out means A1, A3 Stroke A2 Rotation direction B buffer section H1 transport path P1, P2 position

Claims (2)

[Claims] 1. A bobbin wound with a hollow fiber membrane is rotated,
Driving means for supplying the hollow fiber membrane by rewinding while controlling the tension of the hollow fiber membrane, a transport path for transporting the rewinded hollow fiber membrane to a subsequent process, and, in order from the upstream side of the transport path Tension adjusting means for adjusting the tension of the hollow fiber membrane; first holding means for holding and holding the hollow fiber membrane; and a hollow fiber membrane approaching from a position distant from the transport path. And a pressing means for drawing out the hollow fiber membrane from the upstream side by further pressing, forming a buffer portion of the hollow fiber membrane that is detoured in a loop from the transport path, and holding and holding the hollow fiber membrane. Holding means, and the first holding means is opened, and the second holding means is operated to hold the hollow fiber membrane, and in this state, the hollow fiber membrane is transported by the drawing means. Pull out from the upstream side of the buff Control to form a portion, the first holding means is operated to hold the hollow fiber membrane, the second holding means is opened, and the drawer is moved to a position away from the transport path to form the hollow fiber. A hollow fiber membrane supply device, comprising: a control unit that is separated from the fiber membrane and controls supply of the hollow fiber membrane from the buffer section of the hollow fiber membrane in this state. 2. The control means performs control in synchronism with the post-process of drawing out the hollow fiber membrane intermittently. When the drawing-out of the hollow fiber membrane is stopped by the post-process, (1) opening the holding means, operating the second holding means to hold the hollow fiber membrane, and in this state, pulling out the hollow fiber membrane from the upstream side by the drawing means so that a buffer portion can be formed; When the hollow fiber membrane is pulled out from the apparatus, the first holding means is operated to hold the hollow fiber membrane, the second holding means is opened, and the drawing means is moved to a position away from the transport path. The hollow fiber membrane supply device according to claim 1, wherein the hollow fiber membrane can be supplied from a buffer portion of the hollow fiber membrane in this state.