JP2022008772A - Processing apparatus and processing method for cylindrical member - Google Patents

Abstract

To provide a technique capable of processing a cylindrical member while properly rotating it even if the cylindrical member varies in outer diameter as the processing advances.SOLUTION: There is provided a processing apparatus (100) for cylindrical member, which comprises: a rotary cavity body (10) which internally has a cylindrical processing chamber (15) having a larger diameter than a cylindrical member; support parts (12, 12) which support the rotary cavity body (10) with a center axis of the processing chamber (15) held horizontally; and a rotary drive part (21) which rotates the rotary cavity body (10) around the center axis of the processing chamber (15). According to the present invention, the cylindrical member which is a hardened body obtained by form removal after mixing, a hardener with a raw material solution consisting of, for example, raw material powder, distilled water and hardening resin and injecting and hardening the mixture in a molding tool can be processed as it is with a surface state and size precision thereof held excellently.SELECTED DRAWING: Figure 1

Description

The present invention relates to a processing apparatus for producing a columnar member by mold molding.

An optical fiber used for an optical communication transmission path, a laser guide, etc. is composed of a core having a high refractive index and a clad layer having a low refractive index surrounding the core, both of which are non-silica glass, fluoride glass, etc. The main material is metal-inorganic substances.

The optical fiber is formed by drawing a base material of the optical fiber. The optical fiber base material is usually manufactured by using the VAD method (Vaper phase Axial Deposition method), but more sophisticated pore-assisted fibers and photonic crystal type fibers are used.
When manufacturing multi-core fibers and the like, for example, a curing agent is mixed with a glass raw material solution consisting of silica glass powder, distilled water, a dispersant, and a curable resin, and this mixture is put into a molding mold in which a core rod is arranged. It is suitably produced by injecting and curing, then demolding, drying, degreasing, and baking (Patent Document 1).

It is necessary to dry the solidified body obtained by removing the mixture (solidified body) solidified in the mold from the mold. If the dry state is different between the surface and the inside of the solidified body, the solidified body may be deformed or cracked. Therefore, conventionally, in order to prevent deformation and cracking of the solidified body, for example, in a state where the solidified body is laid sideways on a support base having a V-shaped groove-shaped mounting surface, the solidified body is slowly naturally dried at a low temperature over a long period of time. I'm letting you.

In the above-mentioned support base, the mounting surface is V-shaped so that the solidified body of the columnar member is dried while maintaining the linearity, but warpage may occur. Further, if the solidified body is continuously dried while being laid on the support table in the same direction, the dried state of the outer peripheral surface of the solidified body becomes non-uniform. Further, contact marks may be formed on the outer peripheral surface of the solidified body in contact with the mounting surface of the support base. Therefore, in the middle of the drying process, it is necessary to rotate the solidified body to change the position where it comes into contact with the mounting surface of the support base, which requires manpower.

To solve the above-mentioned problems, the solidified body is supported by a support base consisting of two rotating rollers arranged in parallel at predetermined intervals, and the solidified body is dried while being rotated by the two rotating rollers. A method for causing the reaction has been proposed (Patent Document 2).

Japanese Unexamined Patent Publication No. 2013-147384 Japanese Unexamined Patent Publication No. 07-142247

In the method of Patent Document 2, the outer peripheral surface of the solidified body does not have contact marks with the mounting surface, and the dried state does not become uneven. However, in order to rotate the solidified body while reliably supporting the solidified body between the two rotating rollers, it is necessary to appropriately set the distance between the two rotating rollers. That is, if the distance between the rotating rollers is too wide, the solidified body may be sandwiched between the rotating rollers and may not be rotated properly. On the other hand, if the distance between the rotating rollers is too narrow, the solidified body will fall out of both rotating rollers.

Further, as the drying progresses, the solidified body shrinks, so that the outer diameter of the solidified body becomes smaller. Therefore, in order to prevent the shrunk solidified body from being pinched between the two rotating rollers, it is necessary to change the interval between the rotating rollers in the middle of the drying process, which also requires manpower.

Here, the case where the solidified body obtained in the middle of the process of producing the optical fiber base material by mold molding is dried has been described, but if the member produced by mold molding is columnar, the optical fiber base material can be used. Not exclusively. Further, if the process is performed in the middle of the process of producing the columnar member by mold molding and the outer diameter of the columnar member changes as the process progresses, it is a process other than drying. Had a similar problem.

An object to be solved by the present invention is to provide a technique capable of processing while appropriately rotating the columnar member even if the outer diameter dimension of the columnar member changes with the progress of the process.

The present invention, which has been made to solve the above problems, is a processing device for a columnar member.
A rotating cavity having a columnar processing chamber with a larger diameter than the columnar member inside,
A support portion that rotatably supports the rotating cavity with the central axis of the processing chamber lying down, and a support portion.
A rotary drive unit that rotates the rotary cavity around the central axis,
It is characterized by having.

The columnar member to be processed by the processing apparatus of the present invention may have a cylindrical outer circumference, and the inside may be solid or hollow. Hollow columnar members also include those having one or more holes parallel to the central axis of the member and penetrating the member. As long as the rotating cavity has a columnar processing chamber inside, the cross-sectional shape of the outer shape is not limited to a circle but may be polygonal, and both ends may be closed or open. The state in which the central axis of the processing chamber is laid down typically refers to the state in which the central axis is horizontal, but the rotation axis of the columnar member housed in the processing chamber is abbreviated as the central axis of the processing chamber. As long as the columnar members can be rotated so as to be parallel, they may be slightly tilted from the horizontal. The processing chamber is set to a size such that the columnar member can be rotated so that the rotation axis of the columnar member housed in the processing chamber is substantially parallel to the central axis of the processing chamber. Specifically, the inner diameter of the processing chamber is set to be larger than the outer diameter of the columnar member (that is, a cylindrical processing chamber having a larger diameter than the cylindrical member), and the axial length of the processing chamber is set. , It is set to be approximately the same as or larger than the axial length of the columnar member. Depending on the use of the columnar member, the axial length of the processing chamber may be smaller than the axial length of the columnar member. Due to the rotation of the rotating cavity, the inner wall surface repeatedly contacts the columnar member. Therefore, when smoothness is required on the outer peripheral surface of the columnar member, the inner wall surface of the rotating cavity has a surface shape (that is, a smooth surface) that does not cause scratches on the outer peripheral surface due to contact with the columnar member. It is preferable to have. On the other hand, if the outer peripheral surface of the columnar member is not smooth or does not need to be smooth, the inner wall surface of the rotating cavity may have any surface shape.

In the processing apparatus of the present invention, first, the columnar member is placed in the processing chamber so that its central axis is substantially parallel to the central axis of the processing chamber. Then, when the rotating cavity is supported by the support portion in this state and the rotating cavity is rotated by the rotation driving unit, the columnar member in the processing chamber rotates in an attempt to move to the lowest portion in the processing chamber. At this time, even if the outer diameter of the columnar member changes, it does not deviate from the processing chamber. As a columnar member whose outer diameter may change during the treatment, an intermediate obtained in the middle of the process of the member manufactured by a step including molding and firing, for example, raw material powder, distilled water, curability. Examples thereof include a solidified product obtained by mixing a curing agent with a raw material solution composed of a resin, injecting this mixture into a molding die, curing the mixture, and then removing the die. In particular, in the case of a solidified body prepared by mixing a curing agent with a glass raw material solution consisting of silica glass powder, distilled water, a dispersant, and a curable resin, and injecting this mixture into a molding die and curing the mixture, after demolding. Since the outer diameter of the solidified body generally changes (becomes smaller) in the step of treating the solidified body, the processing apparatus of the present invention is useful as a processing apparatus for such a solidified body.

By the way, in the conventional device that rotates so that the outer peripheral surface of the columnar member comes into contact with the outer peripheral surfaces of the two rotating rollers, the contact point (line) due to the contact between the outer peripheral surface of the rotating roller and the outer peripheral surface of the columnar member is formed. It rotates with two places present. In general, since the rotary roller has a larger curvature than the columnar member, the outer peripheral surface of the rotary roller is relatively convex with respect to the outer peripheral surface of the columnar member. Therefore, since the columnar member rotates while being in contact with the convex surface at two contact points, the outer shape of the columnar member is deformed or the roundness is lowered due to the rotation.

On the other hand, in the processing apparatus of the present invention, the columnar member rotates in a state where the outer peripheral surface thereof is in contact with the inner peripheral surface of the rotating cavity, that is, the concave surface. The outer shape is not deformed and the roundness is not impaired.
Further, in the case of the solidified body obtained from the above-mentioned mixture of the glass raw material solution and the curing agent, fine silica glass powder is present on the surface of the solidified body. Therefore, when such a solidified body is rotated by two rotating rollers, fine deformation and non-uniformity occur on the surface of the solidified body, and in some cases, the desired dimensional shape and surface properties may not be obtained. The processing apparatus of the present invention does not have such a problem and can maintain a good state of the solidified body after demolding.

The processing apparatus of the present invention is, for example, a device for drying a columnar member, an apparatus for immersing a columnar member in a liquid to replace the liquid contained in the columnar member, or an apparatus for advancing the curing of the columnar member. Can be used as.
Even in the case of a columnar member such as a solidified body that is still soft immediately after being taken out from the molding die, the surface condition of the outer peripheral surface is kept good by rotating while contacting the inner peripheral surface of the rotating cavity, that is, the concave surface. be able to

The rotating cavity may be provided with a hole for communicating the inside and the outside of the processing chamber, and may be provided with a gas supply unit for supplying a predetermined gas to the processing chamber. When the processing apparatus according to the present invention is, for example, a solidified body drying apparatus, air or other gas is supplied to the inside of the processing chamber.

When the processing device is an device used for immersing a columnar member in a liquid for processing, it is preferable to configure the processing chamber to be liquid-tight. The liquid-tight structure means a structure in which the liquid does not leak from the processing chamber to the outside when the liquid is put into the processing chamber and the rotating cavity is rotated. In this structure, both ends of the rotating cavity are closed. To. Further, by rotating the rotating cavity itself in a state of being immersed in the liquid, it is possible to perform a process of immersing the columnar member in the liquid.

Furthermore, the atmosphere inside the processing chamber is controlled by a sensor that detects the temperature inside the processing chamber, a heating element that heats the inside of the processing chamber, and a controller that controls the heating element according to the detection result of the sensor. You can also do it. In addition to directly controlling the atmosphere inside the processing room, it is also possible to indirectly control the atmosphere inside the processing room by controlling the atmosphere in the space where the processing device is arranged.

In the above processing apparatus, it is preferable that the rotating cavity has a partition wall that divides the inside of the processing chamber into a plurality of spaces in a direction along the central axis thereof.
According to this configuration, since the columnar members can be arranged in each of the plurality of spaces inside the processing chamber, the plurality of columnar members can be processed together.

The present invention is also directed to a method of processing a columnar member.
That is, the present invention is a method for treating a columnar member.
The central axis of the processing chamber and the central axis of the columnar member are parallel to each other inside the processing chamber of a rotating cavity having a cylindrical processing chamber having a diameter larger than that of the cylindrical member. The process of arranging columnar members and
A step of rotating the rotating cavity around the central axis of the processing chamber with the central axis of the columnar member and the central axis of the processing chamber lying sideways.
Have.

According to the present invention, even if the outer diameter dimension of the columnar member changes as the processing progresses, the columnar member can be processed while being appropriately rotated.

The schematic block diagram of the drying apparatus which is one Embodiment of the processing apparatus which concerns on this invention. The figure which shows how the solidified body inside a processing chamber rotates with the rotation of a cylindrical container. The figure which shows the support base on which the solidified body was placed on the mounting surface. In Example 1, the graph which shows the relationship between the time elapsed from the start of drying of a solidified body, and the weight of a solidified body. In Example 2, the graph which shows the relationship between the time elapsed from the start of drying of a solidified body, and the weight of a solidified body. A graph showing a straight line of changes in the weight of a solidified body in a section where the flow rate of nitrogen gas is 0.5 L / min. A graph showing a straight line of changes in the weight of a solidified body in a section where the flow rate of nitrogen gas is 1.0 L / min. A graph showing a straight line of changes in the weight of a solidified body in a section where the flow rate of nitrogen gas is 1.5 L / min. The graph which shows the relationship between the flow rate of nitrogen gas and the weight change rate (slope) of a solidified body. The schematic which shows the cylindrical container of another example of a drying apparatus. Schematic diagram of still another modification of the drying device. The schematic diagram of the embodiment which applied the processing apparatus which concerns on this invention to a liquid immersion apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view showing an embodiment in which the processing apparatus according to the present invention is applied to a drying apparatus.
The drying device 100 has a cylindrical container 10 as a rotating cavity, a pair of support portions 12 that support both ends of the cylindrical container 10 in a horizontal position, and the pair of support portions 12 in the same direction. It is provided with a rotation drive unit 20 that rotates in synchronization with the above. The rotation drive unit 20 includes, for example, a motor 21 and a conduction belt (not shown) that conducts the rotational force of the motor 21 to the support unit 12.

A plurality of ventilation holes 14 are formed on one end surface of both end faces of the cylindrical container 10. Further, the other end surface of the cylindrical container 10 is open, and a removable lid 16 is attached to the other end surface. A tube 32 connected to the gas cylinder 30 is attached to the lid 16. The gas cylinder 30 and the tube 32 constitute the gas supply unit of the present invention. When the object to be processed 50 is taken in and out of the space inside the cylindrical container 10 (hereinafter referred to as the processing chamber 15), the lid 16 is removed from the cylindrical container 10.

For example, nitrogen gas is contained in the gas cylinder 30, and the nitrogen gas in the gas cylinder 30 is supplied to the processing chamber 15 through the tube 32. The flow rate of nitrogen gas is adjusted by a flow rate adjusting valve 33 attached to the tube 32. The motor 21 and the adjusting valve 33 are controlled by the control unit 40.

In the drying device 100 having the above configuration, the elongated cylindrical object to be processed 50 is placed in the cylindrical container 10 and used for the drying process of the object to be processed 50. An input unit 41 including an operation panel, a power switch, and the like is connected to the control unit 40. When the operation signal of the input unit 41 by the user is input to the control unit 40, the control unit 40 drives the motor 21 and the flow rate adjusting valve 33 according to the operation signal. As a result, the cylindrical container 10 rotates, and nitrogen gas flows into the processing chamber 15 inside the cylindrical container 10. Therefore, in the present embodiment, the control unit 40 is included in the rotation drive unit 20. Further, the atmosphere inside the processing chamber 15 is controlled by the control unit 40 controlling the flow rate adjusting valve 33.

Next, an example in which the predetermined object 50 is dried using the drying apparatus 100 will be described.
[Example 1]
Example 1 is an example in which the drying device 100 is used in the drying step of the solidified body, which is one of the manufacturing steps of the optical fiber base material. In this embodiment, as the cylindrical container 10, a pipe made of synthetic resin (polypropylene resin) having an outer diameter of 40 mm, an inner diameter of 34 mm, a length L1 (see FIG. 1) of 1000 mm, and a smooth inner peripheral surface was used. ..

First, the raw material solutions of the formulations shown in Table 1 were placed in a ball mill and mixed for 24 hours. Then, after taking out the mixture from the ball mill, the mixture and the curing agent (see Table 1) were injected into a cylindrical mold and left at room temperature. Then, the mixture cured in the molding die was separated from the molding die to obtain a columnar solidified body (hereinafter referred to as solidified body 50) as the object to be treated 50. The diameter (outer diameter) of the obtained solidified body 50 was 12.3 mm, and the length L2 (see FIG. 1) was 500 mm.

Next, the lid 16 was removed from the cylindrical container 10 of the drying device 100, and the solidified body 50 was placed inside the processing chamber 15 through the opening in a state of lying down to cover the lid 16. At this time, the solidified body 50 was arranged near the center of the processing chamber 15 in the length direction (axial direction). Since the length of the cylindrical container 10 is 1000 mm, the distance between both ends of the solidified body 50 arranged near the center of the inside of the processing chamber 15 and both ends of the cylindrical container 10 is about 250 mm, respectively.

Subsequently, the flow rate adjusting valve 33 is opened to allow the nitrogen gas in the gas cylinder 30 to flow into the processing chamber 15, and the cylindrical container 10 driving the motor 21 is rotated in the direction indicated by the arrow A to perform the drying step. Performed (rotational drying). The nitrogen gas that has flowed into the processing chamber 15 is discharged to the outside of the processing chamber 15 through the ventilation holes 14. Therefore, the nitrogen gas inside the processing chamber 15 is replaced by the nitrogen gas sent from the gas cylinder 30 (that is, the nitrogen gas flows).

Further, as shown in FIG. 2, when the cylindrical container 10 rotates in the direction of arrow A, the solidified body 50 inside the processing chamber 15 tends to move toward the lowest part inside the processing chamber 15, so that it is cylindrical. Like the container 10, it will rotate in the direction of arrow A.

For comparison with the drying treatment of Example 1, a solidified body 50 prepared by the same method and having the same components as that of Example 1 is used as a support base having a V-shaped groove-shaped mounting surface 61 as shown in FIG. The solidified body 50 was naturally dried while being placed on the 60 (hereinafter referred to as Comparative Example 1).
In both Example 1 and Comparative Example 1, the drying device 100 and the support base 60 were placed in the same constant temperature room where the temperature and humidity were kept constant, and the drying step of the solidified body 50 was executed.

The drying conditions of Example 1 and Comparative Example 1 are as shown in Table 2 below.

<Result>
FIG. 4 is a graph showing the relationship between the elapsed time from the start of drying and the weight of the solidified body 50 (ratio (%) when the weight at the start of drying is 100). In the graph of FIG. 4, the horizontal axis is The elapsed time is represented by the vertical axis and the weight (%). Further, in the graph, the square points indicate the weight of Example 1, and the round points indicate the weight of Comparative Example 1. As can be seen from FIG. 4, the change in the weight of the solidified body 50 between the case where the solidified body 50 is dried using the drying device 100 and the case where the solidified body 50 is dried using the support base 60. There was no big difference in the way of (the shape of the curve representing the change).

On the other hand, when the solidified body 50 at the time when the drying was sufficiently advanced (the time point indicated by Te in FIG. 4) was placed on a horizontal plane and the distance between both ends and the horizontal plane was measured, the solidified body 50 of Comparative Example 1 was 7 mm. Although there was a warp amount, the warp of the solidified body 50 of Example 1 was hardly observed. It was found that the warpage of the solidified body 50 due to drying can be suppressed by using the drying device 100.

[Example 2]
In Example 2, a cylindrical solidified body 50 made of the same material as in Example 1 was used as an object to be treated, and this was dried using a drying device 100 (rotational drying). The solidified body 50 had an outer diameter of 37.0 mm, an inner diameter of 10.0 mm, and a length L2 (see FIG. 1) of 500 mm. Further, in this embodiment, as the cylindrical container 10, a pipe made of synthetic resin (polypropylene resin) having an outer diameter of 60 mm, an inner diameter of 54 mm, a length L1 (see FIG. 1) of 700 mm, and a smooth inner peripheral surface is used. Using.

Similar to Example 1, in Example 2, the solidified body 50 was arranged near the center in the length direction (axial direction) of the treatment chamber 15. Since the length of the cylindrical container 10 is 700 mm, the distance between both ends of the solidified body 50 arranged near the center inside the processing chamber 15 and both ends of the cylindrical container 10 is about 100 mm, respectively.

The drying conditions of Example 2 are shown in Table 3. The temperature inside the processing chamber 15 and the rotation speed of the cylindrical container 10 at the time of drying in Example 2 are the same as those in Example 1, but the flow rate of nitrogen gas is different from that in Example 1. Specifically, in Example 2, the flow rate of nitrogen gas was 0.5 L / min (flow rate (1)) from the start of drying (0 minutes) to time t1, and the flow rate was 1.0 L from time t1 to time t2. The flow rate was adjusted to / min (flow rate (2)) and 1.5 L / min (flow rate (3)) from time t2 to time t3. Further, after the time t3, the solidified body 50 was taken out from the processing chamber 15, and the solidified body 50 was placed on the support table 60 (see FIG. 3) and air-dried. The tube 32 comes off from the gas cylinder 30 in any of t0 to t1 (the section marked with * in FIG. 5) after the elapsed time from the start of flowing nitrogen gas at the flow rate (1), and nitrogen gas is discharged into the processing chamber 15. Recognizing that it was not supplied, the tube 32 was reattached at time t1 and the experiment was continued.

<Result>
FIG. 5 is a graph showing the relationship between the elapsed time (minutes) from the start of drying and the weight of the solidified body 50 (ratio (%) when the weight at the start of drying is 100). In FIG. 5, the horizontal axis represents the elapsed time and the vertical axis represents the weight (%). In FIG. 5, (1) to (3) represent the flow rates of nitrogen gas, respectively. Further, FIGS. 6 to 8 show the results of linear approximation of the weight change curve of the solidified body 50 in each section of the flow rate of nitrogen gas (1) to (3) in FIG. Further, FIG. 9 shows the relationship between the flow rate of nitrogen gas and the weight change rate of the solidified body 50.

From FIGS. 5 to 9, it can be seen that when the flow rate of nitrogen gas is increased, the amount of weight change (weight change rate) per unit time increases. Further, as shown in FIG. 5, the weight of the solidified body 50 was reduced even after the supply of nitrogen gas was stopped and the natural drying was switched to.
On the other hand, the warp of the solidified body 50 was only slightly observed immediately after starting to flow nitrogen gas at the flow rate (1).

Although the embodiments according to the present invention have been described above with specific examples, appropriate changes can be made within the scope of the gist of the present invention.
For example, in the above embodiment, a cylindrical container (rotary cavity) made of polypropylene resin is used, but the cylindrical container may be constructed from a synthetic resin other than polypropylene resin. It is also possible to use a metal cylindrical container.

Further, in the above embodiment, one solidified body 50 is arranged inside the processing chamber 15, but a plurality of solidified bodies 50 may be arranged. For example, FIG. 10 shows a cylindrical container 10 of another embodiment of a drying device. The cylindrical container 10 has a partition wall 70 on the inner peripheral surface of the processing chamber 15, whereby the inside of the processing chamber 15 is divided into a plurality of (three in FIG. 10) in the axial direction thereof. Since the solidified body 50 rotates along the inner peripheral surface of the processing chamber 15, even an annular partition wall 70 having an opening in the center can sufficiently prevent the solidified bodies 50 from coming into contact with each other. Further, by forming the annular partition wall 70, the inside of the processing chamber 15 can be divided into a plurality of parts, and the gas supplied to the processing chamber 15 can be distributed throughout the inside of the processing chamber 15.

FIG. 11 shows yet another embodiment of the drying device. In this drying device 100A, the cylindrical container 10 is rotated by a pair of rotating rollers 80. Since the outer diameter of the cylindrical container 10 does not change even if the solidified body 50 is dried, there is no problem even if the cylindrical container 10 is rotated by the rotating roller 80. In this case, the rotary roller 80 serves as both a support portion and a rotary drive portion of the processing device of the present invention.

FIG. 12 shows an embodiment in which the processing apparatus according to the present invention is applied to a liquid immersion apparatus. FIG. 12 shows a cylindrical container 10A which is a component of the liquid dipping device. In this example, since the liquid 200 is housed inside the processing chamber 15, the cylindrical container 10A is configured to be hermetically sealed.

100, 100A ... Drying device 10, 10A ... Cylindrical container 12 ... Support 14 ... Ventilation hole 15 ... Processing chamber 16 ... Lid 20 ... Rotational drive mechanism 21 ... Motor 30 ... Gas cylinder 32 ... Tube 33 ... Adjustment valve 33 ... Flow rate adjustment Valve 40 ... Control unit 41 ... Input unit 50 ... Processing target (solidified body)
60 ... Support stand 61 ... Mounting surface 70 ... Partition wall 80 ... Rotating roller

For example, nitrogen gas is contained in the gas cylinder 30, and the nitrogen gas in the gas cylinder 30 is supplied to the processing chamber 15 through the tube 32. The flow rate of nitrogen gas is adjusted by a flow rate adjusting valve 33 attached to the tube 32. The motor 21 and the flow rate adjusting valve 33 are controlled by the control unit 40.

In the drying device 100 having the above configuration, the elongated cylindrical object to be processed 50 is placed in the cylindrical container 10 and used for the drying process of the object to be processed 50. An input unit (not shown) including an operation panel, a power switch, and the like is connected to the control unit 40. When the operation signal of the input unit by the user is input to the control unit 40, the control unit 40 drives the motor 21 and the flow rate adjusting valve 33 according to the operation signal. As a result, the cylindrical container 10 rotates, and nitrogen gas flows into the processing chamber 15 inside the cylindrical container 10. Therefore, in the present embodiment, the control unit 40 is included in the rotation drive unit 20. Further, the atmosphere inside the processing chamber 15 is controlled by the control unit 40 controlling the flow rate adjusting valve 33.

Subsequently, the flow rate adjusting valve 33 is opened to allow the nitrogen gas in the gas cylinder 30 to flow into the processing chamber 15, and the cylindrical container 10 driving the motor 21 is rotated in the direction indicated by the arrow A (see FIG. 2). And the drying process was carried out (rotational drying). The nitrogen gas that has flowed into the processing chamber 15 is discharged to the outside of the processing chamber 15 through the ventilation holes 14. Therefore, the nitrogen gas inside the processing chamber 15 is replaced by the nitrogen gas sent from the gas cylinder 30 (that is, the nitrogen gas flows).

100, 100A ... Drying device 10, 10A ... Cylindrical container 12 ... Support portion 14 ... Vent hole 15 ... Processing chamber 16 ... Lid 20 ... Rotational drive unit
21 ... Motor 30 ... Gas cylinder 32 ... Tube 33 ... Flow rate adjustment valve 40 ... Control unit 41 ... Input unit 50 ... Processing target (solidified body)
60 ... Support stand 61 ... Mounting surface 70 ... Partition wall 80 ... Rotating roller

Claims (7)

It is a processing device for columnar members.
A rotating cavity having a columnar processing chamber with a larger diameter than the columnar member inside,
A support portion that rotatably supports the rotating cavity with the central axis of the processing chamber lying down, and a support portion.
A rotary drive unit that rotates the rotary cavity around the central axis,
A processing device. In the processing apparatus according to claim 1,
The rotating cavity is provided with a hole that communicates the inside and the outside of the processing chamber.
A processing apparatus including a gas supply unit that supplies a predetermined gas to the processing chamber. In the processing apparatus according to claim 1,
A processing device in which the processing chamber is liquid-tightly configured. In the processing apparatus according to any one of claims 1 to 3,
A processing apparatus in which the rotating cavity has a partition wall that divides the inside of the processing chamber into a plurality of spaces in a direction along a central axis thereof. The processing apparatus according to any one of claims 1 to 4, wherein the columnar member to be treated mixes a curing agent with a raw material solution composed of a raw material powder, distilled water, a dispersant, and a curable resin, and a mixture thereof. Is a solidified body that has been demolded after being poured into a molding die and cured. The processing apparatus according to claim 5, wherein the raw material powder is silica glass powder. It is a processing method for columnar members.
The central axis of the processing chamber and the central axis of the columnar member are parallel to each other inside the processing chamber of the rotating cavity having a cylindrical processing chamber having a diameter larger than that of the cylindrical member. The process of arranging columnar members and
A step of rotating the rotating cavity around the central axis of the processing chamber with the central axis of the columnar member and the central axis of the processing chamber lying sideways.
A method for treating a columnar member.

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