JPH0686702B2 - Equipment for processing linear or sheet materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for treating a linear object or a sheet object.

More specifically, a linear or sheet-like object to be processed is continuously introduced and has an opening, and inside the processing device, some processing is performed on the object to be processed under pressure or reduced pressure, For example, the present invention relates to a treatment device for performing treatment under heating, and in particular, due to the property of the object to be treated, it is necessary to seal the opening without damaging the object to be treated. , Heat treatment furnaces for yarns, filaments, cloths, felts, films, etc., drying furnaces, firing furnaces for producing carbon fibers, graphitized fibers, etc. (preheating furnaces, etc. (hereinafter collectively referred to as heat treatment furnaces The present invention relates to an apparatus for treating a linear object or a sheet object represented by

[Conventional technology]

Usually, in the heat treatment furnace as described above, for example, in a pressurized furnace, air, steam, or other gas is used as a heat medium to treat the object to be treated at some high temperature state, for example, baking and drying. Stretching, heat setting, etc. are performed.

Then, at that time, a resistance is provided at the opening of the heat treatment furnace provided for introducing and discharging the object to be treated into the furnace,
By keeping the inflow of air into the furnace or the outflow of medium gas from the furnace as much as possible and sealing it, the pressure inside the furnace is maintained at an appropriate level, and the temperature inside the furnace is optimized and made uniform, and It is customary to obtain processed high quality objects. Needless to say, such a seal of the opening portion immediately leads to not only the above-mentioned quality but also energy saving, gas saving, and cost reduction, and in fact, has a great significance in industry.

Conventionally, a labyrinth sealing mechanism has been widely used as a non-contact sealing device for an object to be processed at an opening of a heat treatment furnace of this type.

The labyrinth seal device is generally composed of a partition plate arranged at a right angle to a direction in which gas tends to flow (a direction generally equal to a passage direction of an object to be processed), and a groove space partitioned by the partition plate. The pressure loss generated for each of the partition plates acts as a resistance to the gas flow and reduces the outflow and inflow gas amounts.

However, in such a labyrinth seal which has been conventionally used, the groove spaces are continuously arranged in a direction perpendicular to the passing direction of the object to be processed, and a part of the outflow and inflow gas flows is generated in the groove spaces. Along the direction perpendicular to the direction of travel of the object, which disturbs the object and causes flapping to cause the object to contact the partition plate and damage it. It had the inconvenience of inviting quality.

On the other hand, in order to avoid such an inconvenience, there is a defect that the distance between the partition plate of the labyrinth seal and the object to be processed must be wide, which leads to a decrease in the sealing effect.

Due to this point, widening of the labyrinth seal,
Although it is possible to increase the number of stages, in general, the labyrinth sealing device itself is expensive to manufacture when forming the partition plate and the groove, and because it is heavy, it is poor in operability when passing through an object to be processed or when trouble occurs. However, there are drawbacks such as a large scale on the device, and due to such restrictions, the space of the entire processing device, and the restrictions on the continuous process, widening and multi-stage Often limited, the problem of not being able to achieve a sufficient seal to achieve the critical objective of efficiently obtaining a high-quality processed product still remains unsolved.

On the other hand, as a method or apparatus for contacting and sealing in processing an object to be processed which is easily damaged according to the present invention, for example, as shown in JP-A-53-86896, a flexible method is used. There is a method in which a pair of seal rollers made of an elastic material are rotated in close contact with the object to be processed. The technique described in the above publication is effective in the case where the object to be processed itself is a low physical property product having air permeability, but if the object to be processed is damaged by fluff, scratches, etc., its value as a product decreases, For example, it is difficult to use for carbon fiber with high physical properties, heat treatment furnaces for manufacturing VTR films, capacitor films, etc.

Further, the method proposed in JP-A-57-117624 is a method in which a graphite scraping plate having a corrugated surface is used to perform gas sealing by sliding while pressurizing a fiber bundle. In addition to forcibly bending the road, it imparts discontinuous vibration to the fiber bundle, so it is difficult to avoid fluffing due to single yarn breakage.

Furthermore, in the sealing device disclosed in JP-A-59-173362, the partition plate attached to the labyrinth seal portion is movably attached in the traveling direction of the object to be processed, or in the traveling direction and the opposite direction, Further, it is provided with two endless belts that move together with the object to be processed and sandwich the object to be processed and pass through the labyrinth seal portion. However, the above sealing device has drawbacks such that the heat treatment temperature is limited to the heat resistant temperature of the endless belt or less, and in a large heat treatment furnace, the endless belt length becomes long and a large number of rolls are required. is doing.

Needless to say, the above-mentioned problems relating to the sealing mechanism are similarly present in a processing apparatus which intends to perform some processing under pressure as well as under pressure.

(Problems to be Solved by the Invention) In view of the above points, an object of the present invention is to improve the drawbacks of the conventional sealing technique, and in particular, an opening is provided for passage of an object to be processed. When processing the object to be processed under pressure or reduced pressure in the processing device, a linear object having a significantly improved sealing property at the opening, which is necessary to obtain a high-quality and high-quality processing result. Another object is to provide a processing device for a sheet-like material.

[Means for solving problems]

The apparatus for treating a linear object or a seal object of the present invention which achieves the above object has the following configuration.

That is, the linear or sheet-like object to be passed,
A processing device for processing under pressure or reduced pressure,
The openings (a) through which the object to be processed passes include the following (a) to (d)
A treatment device for a linear object or a sheet object, comprising a sealing device having the above structure.

(A) A first direction that is substantially the same direction as the direction in which the object to be processed passes through a cell whose space is partitioned two-dimensionally by a partition material, and a second direction that is not substantially the same direction. (C) an open surface of the cell; and (b) a cell member composed of a cell material that is substantially continuous in two directions and (b) a panel that closes one side of the cell material. Is made to face a fixed object or an object that moves together with a yarn, and a gap is formed between the open surface and the fixed object or the moving object that face each other so that the object to be processed can pass through, (D) A sealing device which is arranged such that the object to be processed passes through in a non-contact manner with the partition member and in contact with the fixed object or the moving object.

The fixed object described here refers to a guide plate, a guide bar, etc. that is fixed at the opening and guides the object to be processed,
A moving object is a roller or a rotation guide that has the ability to positively rotate so as to have the same surface speed as the passing speed of the object to be processed, or a moving object that does not actively rotate but contacts the object to be processed and moves. The rollers and rotation guides that are driven by
Alternatively, it also means a conveyor belt or the like on which the objects to be processed are loaded and moved.

A further preferred aspect of the present invention is according to the following description.
It becomes clear one after another.

[Examples and operations]

Hereinafter, the linear or sheet-shaped processing apparatus of the present invention will be described in more detail with reference to the drawings.

FIG. 1 and FIG. 2 explain an example of a preferred embodiment of the processing apparatus of the present invention, and particularly show the vicinity of the seal part as a main part, and FIG. 1 shows a vertical section near the seal part. FIG. 2 is a schematic sectional view taken along the line ZZ in FIG.

In FIGS. 1 and 2, an object 1 to be processed is introduced into a processing apparatus, for example, a heat treatment furnace 2 through a furnace opening 2a, and is subjected to desired processing under pressure or under reduced pressure. A sealing device 10 is provided in the furnace opening 2a. The sealing device 10 has a direction A in which the object 1 passes through a cell 12 formed by partitioning the space two-dimensionally by partition members 11a and 11b. A plurality of cell materials 3 which are substantially continuously present in two directions, a first direction which is substantially the same direction as and a second direction which is not substantially the same direction; Cell member 4 composed of a panel 13 closing one side
The open surface of the cell 12 is made to face the flat plate-shaped fixed guide 20, and a gap ε is formed between the open surface and the fixed guide 20 which face each other so that the workpiece 1 can pass therethrough. In addition, the object to be processed 1 is disposed so as to be in non-contact with the partition members 11a and 11b and to be in contact with and pass through the fixed guide 20.

The cell member 4 is provided with a side plate 14 on the side surface and a front plate 15 on the front surface, and the depth of the cell is practically equal to the partition member depth h.

The shape of the cell 12 partitioned by the partition material is not particularly limited, such as a circular shape, a polygonal shape, a circular shape or a polygonal shape mixed with large and small sizes, but it is continuous or discontinuous from the viewpoint of ease of production. It is convenient to construct such a partition member by a partition plate having a parallel part and at least one partition plate arranged in a direction intersecting with the partition plate, as shown in FIG. Hexagonal shape,
A rectangular cell shape as shown in FIGS. 3A and 3B is preferable, or a desired cell material 3 can be easily constructed by using a commercially available aluminum, asbestos, vinyl chloride, ceramic honeycomb material, or the like. Is.

If the panel 13, the side plate 14, and the front plate 15 are also made of an appropriate plate made of metal, plastic, or the like, and are joined together with the honeycomb material by a heat-resistant adhesive, sealing is desirable, and the weight and cost can be reduced.

In the construction of the present sealing device 10, the partition material should be constructed so that at least a part thereof has a side portion perpendicular to the gas flow, that is, the arrangement as illustrated in FIG. In order to further enhance the sealing effect, it is desirable that the surface of the fixed guide 20 in contact with the object to be treated 1 has a surface with a friction coefficient as small as possible, for example, ceramic, pear finish, Teflon, or the like. preferable.

Further, if the sealing device 10 can be divided into upper and lower parts, one fixed guide 20 is fixed to the heat treatment furnace 2 by a fixing metal fitting 21, and the other cell member 4 is configured to be rotatable by a hinge or the like, the treatment starts. At the time of occurrence of a trouble or the occurrence of trouble, there are operational advantages such as easy introduction and withdrawal of the object to be treated 1 into the heat treatment furnace 2 and easy removal to the outside of the treatment system.

In the above embodiment, a flat plate-shaped guide is shown as a fixed object, but a bar-shaped fixed guide may have the same configuration.

In the above aspect, according to the knowledge of the present inventors, the narrower the partition material gap ε (mm) facing each other, the greater the sealing effect, and preferably at least 10 mm or less.
When using a partition plate with parallel parts, see Fig. 3A, B
It is preferable that the parallel side spacing S (mm) having the parallel portions and the partition plate depth h (mm) shown in (4) satisfy the following expressions.

0.1 <h / S <0.4 The above equation is applied not only to the quadrangular cell shown in FIG. 3 but also to all the cell shapes having parallel portions such as hexagons. Further, the above formula is not limited to the side 11a perpendicular to the gas flow direction,
For example, it can be applied to parallel sides that are not present at right angles to the gas flow direction, such as 11b in FIG. 3, and by such a configuration a higher sealing effect can be obtained. .

FIG. 4 is a view for explaining another preferred embodiment of the processing apparatus of the present invention, and shows the vicinity of the seal portion as a main part as in FIG. That is, in the embodiment as shown in FIG. 1, the workpiece 1 comes into contact with the fixed guide 20 and rubs against it, so that the object 1 is easily damaged. Therefore, as shown in FIG. The rotating roller 22 is used to prevent this drawback.

The rotating roller 22 of the present apparatus guides the object to be processed 1 and may be positively driven or may be driven by the movement of the object 1 to be rotated. However, since there is no relative speed between the object to be processed 1 and the guide portion 22 that comes into contact with the object to be processed, it is possible to obtain a good processing result almost comparable to the non-contact sealing device.

Further, FIG. 5 is a view for explaining another preferred embodiment of the treatment apparatus of the present invention, similarly showing the vicinity of the seal portion as a main portion.

In this embodiment, the moving object is the conveyor belt 30, and the object 1 is the conveyor belt.
It is introduced into the heat treatment furnace 2 from the opening 2a in a state of being stacked on the substrate 30, and after the treatment, is drawn out from the other opening.

In FIG. 5, the cell member 4 is symmetrically arranged on the lower side through the conveyor belt 30, but such a mode is particularly preferable because the conveyor belt 30 has air permeability and It is effective for sealing a thick mesh belt or felt, for example. When the conveyor belt 30 is not air-permeable, the contact plate 23 shown in FIG. 4 may be used instead of the lower cell member 4 to narrow the gap with the opening 2a.

In the embodiment shown in FIG. 5, the conveyor belt 30
Is permeable to air, when constructing the present sealing device 10, the cell members arranged in a pair are positioned so that the partition members forming a large number of cells substantially coincide with each other. It is preferable to arrange them so as to face each other.

In the above-described example of the embodiment, all of the sealing device 10 has the opening 2a.
Although it is shown as an example of mounting on the outside of the furnace, it may be mounted on the inside or both sides of the furnace depending on the case.

Further, similarly, in the above-described embodiment, the case where the object 1 to be processed is horizontally processed in the processing apparatus is shown. However, the processing apparatus of the present invention can be applied in the direction of introduction / extraction or processing of the object to be processed. Effective regardless of the problem, especially when the object to be processed is processed in the vertical direction, the chimney effect of the atmosphere gas in the furnace (fluid leakage due to fluid density difference) is eliminated and reduced. It is also a powerful tool when it comes to commercialization.

Furthermore, in the above-mentioned embodiment, the panel 13 for closing one side of the cell material 3 is made of a porous material, and by supplying or removing the fluid through the panel 13 and the cell 3, the sealing ability is further improved. It is also possible to blame.

〔effect〕

As described above, when performing some processing under pressure or under reduced pressure, the apparatus according to the present invention employs a two-dimensional sealing mechanism in sealing the opening of the processing apparatus. Therefore, the labyrinth effect can be exerted also in the width direction, and since the object to be processed can be guided from one side, the turbulence due to the outflow to the object to be processed and the inflowing gas flow can be significantly reduced. It is possible to reduce the damage that the object receives by the partitioning material, or to narrow the partitioning material gap, and these effects work together,
As compared with the case where the conventional labyrinth seal mechanism is adopted, a higher sealing effect can be achieved.

Further, particularly when the cell material is composed of a commercially available honeycomb material, it has a simple and lightweight sealing mechanism, and in the device of the present invention having such a sealing mechanism, it is easy to make the sealing mechanism multistage and wide. Even in this respect, a significantly high sealing effect can be realized in combination with the high sealing effect originally possessed as described above.

Of course, by using the processing apparatus of the present invention having such a high sealing effect, it is possible to stably process under desired processing conditions, and it is possible to stably produce a high-quality processed product, At the same time, it brings a great industrial advantage that energy and gas can be saved.

In the treatment apparatus of the present invention, the fluid to be sealed is not particularly limited, and so-called fluid such as gas, liquid, steam, etc. can be applied to the present invention. The effect can be achieved.

[Brief description of drawings]

FIG. 1 and FIG. 2 are views for explaining a preferred embodiment of the processing apparatus of the present invention, particularly showing the vicinity of a non-contact type seal part as a main part, and FIG. 1 shows the seal part. FIG. 2 is a schematic vertical sectional view of the vicinity thereof, and FIG. 2 is a schematic sectional view taken along the line ZZ in FIG. 3A and 3B show one example of the cell shape of the cell material used in the present invention. FIG. 4 and FIG. 5 explain another preferred embodiment of the processing apparatus of the present invention, and show the vicinity of the non-contact type seal part as the main part as in FIG. DESCRIPTION OF SYMBOLS IN THE DRAWINGS 1: Object to be processed, 2: Furnace 2a: Furnace opening, 3: Cell material 4: Cell member 10: Sealing device 11a, 11b: Partition material 12: Cell 13: Panel, 14: Side plate 15 : Front plate, 16: Guide 17: Porous body, 18: Space part 20: Fixed guide, 21: Mounting bracket 22: Rotating roller, 23: Touch plate 30: Conveyor belt A: Direction of the processed object (No. 1 direction) ε: Partition gap, ε: Guide gap h: Partition depth, S: Parallel side gap l: Seal length, w: Seal width

Claims (1)

[Claims] 1. A processing device for processing a linear or sheet-like object to be passed therethrough under pressure or under reduced pressure, wherein an opening through which the object to be processed passes:
A treatment device for a linear object or a sheet object, comprising a sealing device having the configuration of (d). (A) A first direction that is substantially the same direction as the direction in which the object to be processed passes through a cell whose space is partitioned two-dimensionally by a partition material, and a second direction that is not substantially the same direction. (C) an open surface of the cell; and (b) a cell member composed of a cell material that is substantially continuous in two directions and (b) a panel that closes one side of the cell material. Is made to face a fixed object or an object that moves together with a yarn, and a gap is formed between the open surface and the fixed object or the moving object that face each other so that the object to be processed can pass through, (D) A sealing device which is arranged such that the object to be processed passes through in a non-contact manner with the partition member and in contact with the fixed object or the moving object.