JP2005000760A - Centrifugal potting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a centrifugal potting apparatus capable of potting even a large-sized object to be potted while stabilizing the interface of a filling adhesive. <P>SOLUTION: This centrifugal potting apparatus 1 is provided with a tool 3, a cup 5, a tube 10 and a driving part 4. The position that a rotary shaft 2 supports the tool 3 and the center of gravity of a case 12 to be held by the tool 3 are made to exist on one plane where the tool 3 is formed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is used when sealing and fixing a potting object such as a hollow fiber membrane module. Centrifugal potting fills a potting object with a liquid filling adhesive (potting agent) using centrifugal force. The present invention relates to an apparatus, and is particularly used for a large hollow fiber membrane module.
[0002]
[Prior art]
Conventionally, centrifugal potting apparatuses 101 and 201 as shown in FIGS. 3 and 4 have been used. In the centrifugal potting apparatuses 101 and 201, small and medium-sized hollow fiber membrane modules 103 and 203 are placed on the disk-shaped jigs 102 and 202, and the hollow fiber membrane module 103 is rotated by rotating the jigs 102.202. , 203 are swung along a predetermined rotation path. During this turning, the openings of the hollow fiber membrane modules 103 and 203 are directed to the outside of the rotation track, and the liquid filling adhesive is removed from the cups 104 and 204 using the centrifugal force during the turning. It was made to inject | pour into the modules 103 and 203 (refer patent document 1).
[0003]
In such centrifugal potting devices 101 and 201, for example, as described in Patent Document 1, it is considered that the centrifugal force is changed by variably controlling the rotation speed, and the optimum centrifugal force is applied from the start to the end of potting. It was.
[0004]
[Patent Document 1]
Japanese Patent No. 3338087
[Problems to be solved by the invention]
However, although the conventional centrifugal potting device can be used for a small-sized and medium-sized hollow fiber membrane module as shown in FIGS. 3 and 4, when the hollow fiber membrane module is large, as shown in FIG. As the centrifugal potting apparatus 301, it may be difficult to use the centrifugal potting apparatus 301 with substantially the same configuration as that of FIGS.
[0006]
That is, since the large-sized hollow fiber membrane module 303 is heavy, when the large-sized hollow fiber membrane module 303 is placed on the disk-shaped jig 302 and rotated, as shown in FIG. Due to the centrifugal force, the jig 302 warps downward.
[0007]
When the jig 302 is warped downward as described above, the large hollow fiber membrane module 303 fixed to the jig 302 is inclined downward on the outer side of the rotation radius. The potting portion 303 does not become a potting portion 701 having a substantially uniform thickness and a substantially straight interface as shown in FIG. 7, but a potting portion having a difference in thickness and a slanting interface of the filling adhesive as shown in FIG. It becomes a part 801, and a product deteriorates.
[0008]
For this reason, it is conceivable to reinforce the jig so that it does not warp. However, if it is reinforced, the weight of the jig increases, making it difficult to rotate the heavily reinforced jig. Due to the shortage, air or the like is mixed into the filling adhesive, resulting in poor potting.
[0009]
Therefore, conventionally, the centrifugal potting device is operated by reducing the number of large hollow fiber membrane modules to be mounted so that the jig does not warp, and the number of products obtained in one operation is small, and the productivity is reduced. Was low.
[0010]
The present invention has been made in view of the above prior art, and an object of the present invention is to provide a centrifugal potting apparatus that enables potting by stabilizing the interface of a filling adhesive even for a large potting object.
[0011]
[Means for Solving the Problems]
In the conventional configuration, the present inventor only places the potting object on the jig, and therefore when the potting object becomes large, the large potting object moves away from the plane on which the jig rotates. Because the weight of the large hollow fiber membrane module is concentrated only on one side of the plane where the jig rotates, the potting object is rotated by the centrifugal force when the jig rotates. We paid attention to the fact that the jig would be warped by being drawn on the flat surface.
[0012]
And remember that if you hold a large potting object on the rotating plane of the jig from the beginning, the jig will not bend, and the center of gravity of the potting object will be on the rotating plane of the jig. I got the idea to make it exist.
[0013]
In a specific configuration of the present invention, the potting object is held and rotated around a rotation axis so that the potting object can be turned on a plane perpendicular to the axial direction of the rotation axis. A jig to be formed, a storage part for storing a liquid filling adhesive disposed in the center of the jig, and a pipe serving as a flow path for the filling adhesive connecting the storage part and the potting object And a driving means for rotating the jig by rotating the rotary shaft, and a position where the rotary shaft supports the jig, and the potting object held by the jig. And the center of gravity of the jig is present on one plane on which the jig is formed.
[0014]
The jig extends around the rotation axis in a radial direction perpendicular to the axial direction of the rotation axis, and the potting object is placed on both sides of the plane on which the jig extends. It is preferable to hold it so that it is divided.
[0015]
In the above invention, even a large potting object can be held so that the center of gravity exists on the plane on which the jig rotates, and the jig does not warp.
[0016]
Therefore, since the jig does not warp, the large potting object fixed to the jig does not tilt, and the interface of the filling adhesive in the potting object is prevented from being stable and oblique. Therefore, the defect of the product to be potted is reduced and the productivity is improved.
[0017]
In addition, since the jig does not warp, it is not necessary to reinforce the jig so that it does not warp, so that the weight of the jig does not increase and the weight of the jig is reduced. Can do. Therefore, it is easy to rotate the jig by reducing the weight of the jig, can fully exert the centrifugal force, and can increase the number of potting objects mounted on the apparatus as compared to the conventional, The number obtained by one operation increases, and the productivity is improved.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Exemplary embodiments of the present invention will be described in detail below with reference to the drawings.
[0019]
First, a large-sized hollow fiber membrane module as a product completed by injecting a potting agent as a filling adhesive by a centrifugal potting apparatus will be described with reference to FIG. FIG. 2 is a schematic view of a large hollow fiber membrane module. This large hollow fiber membrane module 11 is used for humidification of an in-vehicle fuel cell.
[0020]
A hollow fiber membrane module 11 in FIG. 2 includes a hollow cylindrical case 12 inside, a large number of linear hollow fiber membranes 13 arranged in the case 12, and ends of the hollow fiber membranes 13 at the case 12. And potting portions 14 and 15 at both ends in the longitudinal direction fixed by a potting agent that adheres to each other.
[0021]
The case 12 is a cylindrical body having both ends open, and a plurality of linear hollow fiber membranes 13 are bundled in the case 12 with both ends aligned at both open ends of the case 12. Both end portions of the film 13 are fixed to the case 12 as potting portions 14 and 15 in which a potting agent is hardened. Both potting portions 14 and 15 formed at both ends of the case 12 hermetically seal the gaps between the hollow fiber membranes 13 and between the hollow fiber membranes 13 and the case 12, and separate the inside and outside of the case 12, Only the inside of the hollow fiber membrane 13 can communicate from the end faces of the potting portions 14 and 15.
[0022]
Next, the centrifugal potting apparatus will be described with reference to FIG. FIG. 1 is a diagram of a centrifugal potting apparatus according to the present embodiment. In this centrifugal potting apparatus 1, an operation of filling a potting agent in order to form a potting portion at a predetermined position in the case 12 in which the hollow fiber membrane 13 is disposed is performed.
[0023]
Here, the potting object is the case 12 in which the hollow fiber membrane 13 is disposed. In order to complete the hollow fiber membrane module 11 as the product shown in FIG. 2, it is necessary to perform potting on the case 12 at two positions on both ends, and thus the potting object has not yet been potted on both ends. In addition to the case 12, a case 12 in which one end is potted but the other end is not potted is also included.
[0024]
A centrifugal potting device 1 shown in FIG. 1 rotates around a rotating shaft 2 so as to rotate in a rotating radial direction perpendicular to the axis of the rotating shaft 2 and to rotate the jig 3. A driving unit 4 as a driving means having a motor for rotating the shaft 2 and a cup 5 as a storing unit for storing a potting agent disposed at an end of the rotating shaft 2 extending above the jig 3; I have.
[0025]
As shown in FIG. 1A, the jig 3 holds eight cases 12 in which the hollow fiber membranes 13 are arranged radially so as to surround the rotating shaft 2. These cases 12 are held so that the central axis of the cylinder is along the rotational radius direction, and one open end portion into which the potting agent is injected is directed outward in the rotational radial direction.
[0026]
The case 12 is held by the jig 3 by fixing the case 12 to the upper and lower holders 6 and 7 which are divided into upper and lower parts. The upper and lower holders 6 and 7 are composed of an upper holder 6 and a lower holder 7 which are equally divided up and down with respect to the plane of the disk-shaped jig 3.
[0027]
The upper holder 6 has a semi-cylindrical shape that protrudes upward from the jig 3, and the lower holder 7 has a semi-cylindrical shape that is recessed below the jig 3. When the upper and lower holders 6, 7 are combined, a case It becomes the hollow cylindrical shape which accommodates 12 inside.
[0028]
The upper and lower holders 6 and 7 are connected by a hinge 8 so that the upper holder 6 can be opened and closed with respect to the lower holder 7 fixed to the jig 3 so that the case 12 can be accommodated therein.
[0029]
Therefore, when the case 12 is housed in the upper and lower holders 6 and 7 and is held by the jig 3, the case 12 is equally divided up and down on both sides with respect to the plane of the disk-shaped jig 3. It becomes. That is, the case 12 is held by the jig 3 so that the center of gravity of the case 12 exists on the plane of the disk-shaped jig 3.
[0030]
On the other hand, the jig 3 has a disk shape that extends in a rotational radius direction perpendicular to the axial direction of the rotary shaft 2. For this reason, the position where the rotating shaft 2 supports the jig 3 and the center of gravity of the case 12 held by the jig 3 exist on the plane of the disk-shaped jig 3.
[0031]
Further, the lower holder 7 has an end surface 9 that closes the opening end of the outer side of the case 12 in the radial direction of rotation, and the end surface 9 comes into contact with the case 12 when the jig 3 rotates. The potting agent in 12 is kept in place.
[0032]
Furthermore, between each upper holder 6 and the center cup 5, the tube 10 as a pipe | tube which lets a potting agent pass from the cup 5 to the upper holder 6 with a centrifugal force is attached.
[0033]
In the centrifugal potting apparatus 1 having the above-described configuration, the case 12 is swung on a predetermined rotation path by rotating the rotating shaft 2 by the drive unit 4 and rotating the jig 3.
[0034]
Then, when the rotation of the jig 3 is stabilized at 410 to 420 rpm, the potting agent is put into the center cup 5. The introduced potting agent is equally divided into eight tubes 10 by centrifugal force and injected into each case 12.
[0035]
The potting agent injected into the case 12 is restricted by the end surface 9 of the lower holder 7 by centrifugal force and is held at a predetermined position on the outer end portion of the rotating radius in the case 12. At this time, the interface of the potting agent is substantially perpendicular to the plane of the jig 3 that rotates due to centrifugal force, and the interface does not become oblique.
[0036]
When the jig 3 is further rotated, the potting agent is cured during the rotation of the jig 3, and the potting portions 14 and 15 of the hollow fiber membrane module 11 are formed, thereby completing the potting.
[0037]
In the above embodiment, the case 12 of the large hollow fiber membrane module 11 is held so that the center of gravity exists on the plane of the disk-shaped jig 3, so that the case 12 is caused by centrifugal force when the jig 3 is rotated. The jig 3 is not drawn on the rotating plane, and the jig 3 is not warped when the jig 3 is rotated even if the case 12 is heavy.
[0038]
Therefore, since the jig 3 does not warp, the large case 12 fixed to the jig 3 does not tilt, and the interface of the potting agent in the case 12 is stabilized substantially straight and perpendicular to the plane of the jig 3. It won't be diagonal. Therefore, the failure of the large-sized hollow fiber membrane module 11 subjected to potting is reduced, and the productivity is improved.
[0039]
In addition, since the jig 3 does not warp, it is not necessary to reinforce the jig 3 so that it does not warp. The weight can be reduced. Therefore, it becomes easy to rotate the jig 3 by reducing the weight of the jig 3 without changing the driving section 4, and the centrifugal force can be sufficiently exerted even if the driving section of the conventional centrifugal potting device is used. The number of cases 12 mounted on the apparatus can be increased to 8 without jigs 3 being warped, whereas the number of cases 12 mounted on the apparatus has been rarely warped even in the past. The number obtained by one operation is increased, and the productivity is improved.
[0040]
In the present embodiment, the jig 3 has a disk shape, but is not limited thereto, and may be any one as long as it is formed on a single plane perpendicular to the axial direction of the rotary shaft 2. For example, a polygonal flat plate that holds the case at a corner position may be used.
[0041]
【The invention's effect】
As described above, according to the present invention, even a large potting object can be potted while stabilizing the interface of the filling adhesive.
[Brief description of the drawings]
FIG. 1A is a plan view showing an arrangement of cases on a jig of a centrifugal potting apparatus according to an embodiment. (B) is a side view which shows the jig | tool part of the centrifugal potting apparatus which concerns on embodiment. (C) is a figure which shows the centrifugal potting apparatus which concerns on embodiment.
FIG. 2 is a view showing a large hollow fiber membrane module.
FIG. 3A is a plan view showing the arrangement of cases on a jig of a conventional centrifugal potting apparatus. (B) is a figure which shows the conventional centrifugal potting apparatus.
FIG. 4A is a plan view showing an arrangement of cases on a jig of a conventional centrifugal potting apparatus. (B) is a figure which shows the conventional centrifugal potting apparatus.
FIG. 5A is a plan view showing the arrangement of cases on a jig of a conventional centrifugal potting apparatus. (B) is a figure which shows the conventional centrifugal potting apparatus.
FIG. 6 is a diagram showing a problem of a conventional centrifugal potting device.
FIG. 7 is an enlarged view showing a potting portion when potting of the hollow fiber membrane module is appropriate.
FIG. 8 is an enlarged view showing a potting portion when potting of the hollow fiber membrane module is inappropriate.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Centrifugal potting apparatus 2 Rotating shaft 3 Jig 4 Drive part 5 Cup 6 Upper holder 7 Lower holder 8 Hinge 9 End face 10 Tube 11 Hollow fiber membrane module 12 Case 13 Hollow fiber membranes 14 and 15 Potting part

Claims (2)

A jig formed on a plane perpendicular to the axial direction of the rotary shaft, which holds the potting target and allows the potting target to turn by rotating about the rotary shaft;
A reservoir for storing a liquid filling adhesive disposed in the center of the jig;
A tube serving as a flow path for the filling adhesive connecting the reservoir and the potting object;
Drive means for rotating the jig by rotating the rotary shaft;
In a centrifugal potting apparatus equipped with
A centrifugal potting device, wherein the rotational shaft supports the jig and the center of gravity of the potting object held by the jig is present on one plane on which the jig is formed. . The jig extends around the rotation axis in a radial direction perpendicular to the axial direction of the rotation axis, and the potting object is placed on both sides of the plane on which the jig extends. The centrifugal potting device according to claim 1, wherein the centrifugal potting device is held so as to be divided.

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