JP3259046B2 - Drying equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drying apparatus, and more particularly to a resin or ceramic (hereinafter, also referred to simply as "resin") coated on a top surface of a long base material with a predetermined thickness.
For drying (forming a film) on the substrate while moving the substrate forward.

[0002]

2. Description of the Related Art Conventionally, as a drying device for forming a resin applied on an upper surface of a long base material on the base material, a counter flow type device, a quick jet type device and the like are known. Various devices such as devices have been proposed. However, all of them blow hot air more or less directly onto the resin on the base material. In other words, in the conventional drying apparatus, the resin to be formed (formed into a film) is directly or more directly affected by the hot air itself.

[0003] As a result, only the surface of a resin having a predetermined thickness is hardened at a stretch, and a thin skin-like hardened film is formed on the surface while the inside is unhardened, and the surface often cracks. Was.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a thin film having a predetermined thickness while preventing only the surface from being cured at a stretch and forming a thin film. It is an object of the present invention to provide a drying apparatus capable of forming (forming a film) a dry resin.

[0005]

Drying apparatus according to claim 1, wherein SUMMARY OF THE INVENTION were coated with a predetermined thickness on the upper surface of the elongated base soluble
A drying apparatus for forming a resin or ceramic containing a medium by drying and molding the base material while moving the base material toward the front, and facing the base material above the base material and A first plate extending in the traveling direction of the substrate is provided, and a second plate facing the first plate and extending in the traveling direction of the substrate is provided above the first plate; An air blower tube that allows hot air to flow in a direction opposite to the substrate traveling direction is provided in a space formed between the second plates, and both the first plate and the second plate penetrate in a thickness direction. A hot air inlet that is provided with a large number of air holes and through which hot air can flow in a direction opposite to the substrate running direction is provided below the base, and a base blown out from the hot air inlet.
The base material is heated by hot air flowing in the direction opposite to the material running direction.
Heating, thereby evaporating the solvent to the first plate and the second plate.
Opposite to the substrate running direction in the space between the two plates
It is removed by hot air flowing in the direction .

According to a second aspect of the present invention, in the drying apparatus according to the first aspect, the first plate and / or the second plate are disposed.
On the upper surface of the plate, an adjustment plate having a large number of through-holes extending in the substrate traveling direction and penetrating in the thickness direction is placed, and the first plate and / or The opening area of the ventilation hole in the second plate can be changed.

According to a third aspect of the present invention, in the drying apparatus according to the first or second aspect, the second plate is provided so that its mounting height can be changed. The size of the space formed between the first plate and the second plate can be changed.

[0008] The drying apparatus according to claim 4 is the drying apparatus according to claims 1-3.
The drying device according to any one of the above, wherein the base material travels on a wire mesh placed on a metal plate such as an aluminum plate.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

[0010]

According to the first aspect of the present invention, the substrate is first heated by the hot air blown from the hot air inlet provided below the substrate. Thereafter, the undried resin on the substrate is warmed. Thereby, the solvent (solvent) in the resin
Are successively vaporized (evaporated) and released, and the resin hardens accordingly. The vaporized (evaporated) solvent (solvent) firstly enters the space between the resin and the first plate (hereinafter, referred to as a space).
This space is called "natural drying space")
The space between the first plate and the second plate (hereinafter, this space is referred to as a “counter drying space”) is reached through the ventilation holes of the first plate.

[0011] In the counter drying space, hot air blown from a blower tube flows in a direction opposite to the substrate traveling direction, and a solvent (solvent) which is successively vaporized (evaporated) merges with the hot air to form a hot air. It is removed according to the flow. Also,
As described above, since a large number of vents are also provided in the second plate, a part of the vaporized solvent (solvent) is discharged from the counter drying space through the vents.

As described above, the hot air blown from the blower tube flows in the space above the first plate, that is, the counter drying space, so that the undried resin on the base material is directly exposed to the hot air (direct influence). Do not worry). Thereby, only the surface of the undried resin having a predetermined thickness is hardened at a stretch, and there is no fear that a thin skin-like cured film is formed on the surface while the inside is unhardened.

Since the hot air blown out from the hot air inlet provided below the base material flows in a direction opposite to the direction in which the base material travels, the closer the hot air is to the carry-in entrance of the drying device, the more the hot air is blown. It will be cooled naturally. Accordingly, there is no fear that the resin that has just entered the inside of the apparatus main body of the drying apparatus is rapidly heated at a high temperature, and is heated under a gradually increasing temperature condition.

[0014] If the first plate and / or the second plate are composed of a plurality of plate members vertically stacked so as to be relatively movable in the longitudinal direction, as in the drying device of the second aspect, By moving the plurality of plate structures relative to each other in the longitudinal direction, the first
The opening area of the ventilation hole in the plate and / or the second plate can be changed, and it is possible to appropriately respond to changes in the thickness of the coating resin, the running speed of the base material, and the like.

According to a third aspect of the present invention, if the mounting height of the second plate can be changed, the width of the counter drying space can be changed, and the thickness of the coating resin and the traveling speed of the base material can be changed. Etc. can be appropriately handled.

According to the fourth aspect of the present invention, since the metal plate is disposed below the traveling base material, heat is transmitted from the hot air blown from the hot air inlet to the base material. In addition, it is preferable because the heat transfer to the undried resin can be made uniform in the width direction. Moreover, the frictional resistance during traveling can be reduced by the substrate traveling on the wire mesh.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A drying apparatus (A) according to an embodiment of the present invention will be described below with reference to FIGS.

Reference numeral (10) denotes an apparatus main body having a hollow rectangular parallelepiped shape. The apparatus main body (10) is made of a heat insulating material and is roughly divided into a first chamber (11), a second chamber (12), and a third chamber (12) in order toward the front (to the right in FIG. 1). Room (13).

At the rear end (left end in FIG. 1) of the apparatus main body (10), a relatively wide carry-in port (14) is formed, and at the front end, it is narrower than the carry-in port (14). Exit (1
6) is formed.

Inside the apparatus body (10), a metal plate extending from the lower end of the carry-in port (14) to the lower end of the carry-out port (16), for example, a band-like flat plate (1) such as an aluminum plate.
8) is installed horizontally. The flat plate (18) divides (isolates) the inside of the apparatus body (10) into an upper portion and a lower portion. As shown most clearly in FIG. 3, on the flat plate (18), a wire mesh (20) having substantially the same width as the flat plate (18) and extending in the longitudinal direction of the apparatus body (10). ) Are superimposed.

Reference numeral (22) denotes a long base material which slides forward on the upper surface of the wire mesh (20). The width of the base material (22) is smaller than the wire mesh (20) as shown in FIG. The base material (22) is coated with an undried (uncured) resin by a coating part (24) provided on the rear part (the left part in the figure) of the apparatus body (10) with respect to the upper surface. J) is applied. That is, the above-mentioned base material (22)
During the traveling, the undried (uncured) resin (J) is applied to the outside of the device body (10) by the coating unit (24) (before entering the inside through the entrance (14) of the device body (10)). And enters the apparatus main body (10) with the resin (J) placed thereon. Then, while passing through the inside of the apparatus main body (10), the resin (J) undergoes a drying process to be cured and molded (film-formed) as will be described later, and is formed through the outlet (16). Get out of (10).

The first chamber (11) in the apparatus body (10) is
An exhaust port (11a) is provided on the upper surface, and a hot air discharge port (30) is provided on the bottom surface. In addition, the exhaust duct chamber (3) is provided between the first chamber (11) and the coating section (24) behind the first chamber (11).
2) is provided, and an exhaust port (32a) is provided on the upper surface of the exhaust duct chamber (32). The exhaust duct chamber (32) can communicate with the first chamber (11), that is, with the apparatus main body (10) via the carry-in port (14).

The second chamber (12) is a first chamber (11) on its upper surface.
An exhaust port (12a) is provided near the exhaust port (12a).
Is provided with an air supply port (12b) in front of the vehicle. Room 2 (1
Inside 2), a heater (H), a filter (FT), and a fan (F) are sequentially provided forward from the air supply port (12b). The fan (F) communicates with a blower pipe (34) provided below the fan (F). The blower tube (34) has an L shape. 1 and 2
As shown in the figure, the blower pipe (34) extends straight downward from the outlet of the fan (F), bends in an L-shape (C-shape) in the middle, and carries in the entrance (1) of the first chamber (11). 14) and open at its free end (3
6) is provided with a plate body (38) (punching plate) having many small holes (38a) penetrating in the thickness direction. Accordingly, when the fan (F) is driven, air enters through the air supply port (12b), and the entered air is warmed by the heater (H) to become hot air, and is blown through the blower tube (34) through the filter (FT). ) And blown into the air duct (3
It is blown out from many small holes (38a) through the inside of 4). A notch (40) is formed at a part of the bottom of the horizontal portion (the portion that is bent and then extends toward the carry-in port (14)) of the blower tube (34), and covers the notch (40). A patch plate (42) is attached to the outer surface of the air duct (34) by a hinge (44). The hinge (44)
The holding plate (42) can be appropriately stopped at a predetermined angle in order to keep the notch (40) open. Therefore, by operating the backing plate (42), a portion of the hot air from the fan (F) can be removed from the cutout (4).
0) (see dashed-dotted lines in FIGS. 1 and 2). A hot air inlet (46) is provided on the bottom surface of the second chamber (12) just below the blower tube (34).

An air blower tube (34) inside the second chamber (12)
A solvent removing means (50) is placed on the wire mesh (20) between the inside of the first chamber (11) and the inside of the exhaust duct chamber (32). The solvent removing means (50) is a base material (22)
Above the substrate (22) and facing the substrate (22)
A first plate (51) extending in the traveling direction of the vehicle.
The first plate (51) has a height level substantially the same as the lower end of the blower tube (34) by supporting plates (56) extending upward from upper surfaces on both left and right sides in the width direction of the wire mesh (20). (See FIG. 2). Further, the first plate (51) is provided with a large number of ventilation holes (51a) penetrating in the thickness direction. A first adjustment plate (61) is mounted on the first plate (51). A through hole (61a) penetrating through the first adjustment plate (61) also in the thickness direction.
Are provided. Therefore, by moving the first adjustment plate (61) on the first plate (51) in the longitudinal direction (see FIG. 4), the opening area of the ventilation hole (51a) in the first plate (51) can be adjusted. it can.

Above the first plate (51), a second plate (52) facing the first plate (51) and extending in the traveling direction of the substrate (22) is provided at a predetermined interval. Have been. The second plate (52) is a first plate (51)
Outside the wire, as with the first plate (51), the wire mesh (2
0) are held by support plates (58) extending upward from the upper surfaces of both left and right end portions in the width direction (FIG. 3).
reference). In the case of the present embodiment, the left and right support plates (58) for holding the second plate (52) are, as shown in FIG.
Screw holes (60) and (60) are provided at predetermined positions of both plate members, and screws (B) are inserted into the screw holes (60) and (60). By attaching (screw-fitting), the two plate members are integrally attached to form one support plate (58). Since the screw hole (60) of the outer plate member of the two plate members is constituted by a vertically extending elongated hole, the second plate (5
The height of 2) can be changed (see the two-dot chain line in FIGS. 2 and 3). Like the first plate (51), the through-hole (62) penetrating in the thickness direction is formed on the second plate (52).
A second adjustment plate (62) having a number of a) is placed. Second adjustment plate (62) on second plate (52)
By moving in the longitudinal direction (see FIG. 4), the opening area of the ventilation hole (52a) of the second plate (52) can be adjusted. As is clearly shown in FIG. 2, a hot air guide plate (68) is attached to the front end of the second plate (52), and the front end of the hot air guide plate (68) is connected to the above-described blower tube. It is placed in contact with the upper surface of (34). Since the hot air guide plate (68) is attached at an angle by the hinge (70), it can sufficiently cope with a change in the height of the second plate (52) (see a two-dot chain line in FIG. 2).

As described above, since the first plate (51) is held at substantially the same height level as the lower end of the blower tube (34), the hot air blown out from the blower tube (34) is heated by the hot air guide plate. While being guided by (68), it enters the space (counter drying space (K)) between the first plate (51) and the second plate (52).

Below the flat plate (18) inside the first chamber (11) and the second chamber (12) of the apparatus body (10), hot air flows in a direction opposite to the direction in which the substrate (22) runs. Flowing. That is, hot air is sent from the hot air inlet (46) provided on the bottom surface of the second chamber (12) by the lower fan (F) and the lower heater (H) outside the apparatus body (10). This hot air flows in the direction of the hot air outlet (30) of the first chamber (11), which has become negative pressure by the drive of the lower fan (F). This allows hot air to flow in the direction opposite to the substrate traveling direction below the flat plate (18). While the hot air flows below the flat plate (18), the flat plate (18) is heated by the heat from the hot air and is heated by the base material (22) running directly thereabove through the wire mesh (20). Convey. Thereby, the solvent (solvent) in the undried resin (J) applied on the base material (22) evaporates (evaporates) one after another, and the resin (J) hardens. The vaporized solvent is first mixed with the resin (J) and the first
The first plate (51) and the second plate (52) are directed upward through the space (natural drying space (S)) between the first plate (51) and the air hole (51a) of the first plate (51). (Counter drying space (K)). In the counter drying space (K), the hot air blown out from the blower pipe (34) flows in the direction opposite to the traveling direction of the base material (22). ) Removed. Also, the second plate (52)
Since a large number of vent holes (52a) are provided in the, a part of the vaporized solvent is discharged from the counter drying space (K) through the vent holes (52a).

By driving the exhaust fan (F), the exhaust ports (32a), (11a) and (12a) in the exhaust duct chamber (32), the first chamber (11), and the second chamber (12).
The air and the solvent after the work are discharged to the outside of the apparatus body (10) through a).

The hot air blown out from the blower tube (34) flows in the space above the first plate (51), that is, in the counter drying space (K), so that the undried resin (J) on the base material (22). ) Is not directly exposed to (directly affected by) the hot air. Thus, there is no possibility that only the surface of the undried resin (J) having a predetermined thickness is cured at a stretch, and a thin skin-like cured film is formed on the surface while the inside is not cured.

Since the hot air flows in the direction opposite to the direction in which the base material travels below the base material (22), the temperature of the hot air naturally increases as it approaches the carry-in port (14) of the apparatus body. You will be chilling. Thereby, there is no fear that the resin (J) just entering the inside of the apparatus main body (10) is rapidly (at once) heated.

The third chamber (13) is provided therein with a hot air blowing duct (80). A plurality of injection ports (80a) extending in the width direction are arranged in a row in the longitudinal direction of the apparatus main body (10) on the lower surface of the hot air blowing duct (80) facing the base material traveling path. The upper surface of the third chamber (13) (second
An exhaust port (13a) is provided in the upper surface near the chamber (12). The sending of the hot air into the hot air blowing duct (80) is performed as follows. That is, the third room (1
An air supply port (13b) is provided on the upper surface of 3), and the third chamber (13)
Inside, the heater (H), the filter (FT), and the fan (F) sequentially from the air supply port (13b) toward the front.
Is provided. The fan (F) communicates with the hot air outlet duct (80). Therefore, fan (F)
By driving the air, air enters from the air supply port (13b) and is heated by the heater (H) to become hot air, and the filter (F)
Through T), it is sent to the hot air outlet duct (80). Then, the hot air sent into the hot air blowing duct (80) is injected toward the resin (J) from the above-described injection port (80a).

As described above, the first chamber (11) and the second chamber (1
The resin (J) which has been dried to some extent in 2) is completely cured (formed) by directly receiving hot air in the third chamber (13), and then discharged from the apparatus body (10). . And the air (including the released solvent) after work in the third chamber (13) is the same as in the first chamber (11) and the second chamber (12).
It is discharged through the exhaust port (13a).

The first plate (51) and the second plate (52) are connected to the air duct (34) inside the second chamber (12).
Extending from the first chamber (11) to the inside of the exhaust duct chamber (32), each of which may be constituted by one member, or as in the present embodiment. ,
It can also be configured by joining a plurality of sheets. In this case, they may be connected to each other by an appropriate connecting member, or may be simply brought into contact with no gap.

Also, a small amount of hot air can be flowed from the blower pipe (34) to the natural drying space (S) as long as the undried resin is not adversely affected. This can be performed by holding the backing plate (42) in an open state and discharging a part of the hot air from the notch (40).

Furthermore, in order to reduce the risk of explosion during drying, the hot air sent into the inside of the apparatus main body (10) may be hot air made of an inert gas (for example, nitrogen gas).

[0036]

According to the drying apparatus of the present invention, an undried resin having a predetermined thickness can be formed (formed) while preventing only a surface from being cured at a stretch and forming a thin film.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a drying apparatus according to one embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of the previous figure.

FIG. 3 is a sectional view taken along line XX in FIG.

FIG. 4 is a perspective view showing a state in which a first adjustment plate (or a second adjustment plate) on a first plate (or a second plate) is moved to adjust an opening area of a ventilation hole.

[Explanation of symbols]

 A: Drying device J: Resin K: Counter drying space S: Natural drying space 18: Flat plate 20: Wire mesh 22: Base material 34: Blower tube 46: Hot air inlet 51: No. 1 plate 52 ... second plate 51a, 52a ... vent hole 61 ... first adjustment plate 62 ... second adjustment plate 61a, 62a ... through hole

Continuation of the front page (56) References JP-A-3-98673 (JP, A) JP-A-2-11569 (JP, A) Jiko 62-30719 (JP, Y2) (58) Fields investigated (Int) .Cl. ⁷ , DB name) B05C 9/14 F26B 15/00

Claims (4)

(57) [Claims] 1. A resin or ceramic containing a solvent, which is applied with a predetermined thickness on an upper surface of a long base material, is dried on the base material while running the base material forward. a drying apparatus, wherein a first plate is provided above the base material, the first plate facing the base material and extending in the traveling direction of the base material, and the first plate is provided above the first plate. A second plate facing the one plate and extending in the traveling direction of the substrate is provided, and hot air flows in a space formed between the first plate and the second plate in a direction opposite to the substrate traveling direction. The first plate and the second plate are each provided with a large number of ventilation holes penetrating in a thickness direction, and in a direction opposite to the substrate traveling direction below the substrate. Hot air feeding that allows hot air to flow An inlet is provided , and is opposite to the substrate traveling direction blown out from the hot air inlet.
The base material is heated by hot air flowing in the
Between the first plate and the second plate
Hot air flowing in the space in the direction opposite to the
Drying device characterized by removing . 2. An adjusting plate having a large number of through holes extending in a substrate running direction and penetrating in a thickness direction is placed on an upper surface of the first plate and / or the second plate. By moving in the direction
2. The drying device according to claim 1, wherein an opening area of the ventilation hole in the first plate and / or the second plate can be changed. 3. 3. The second plate is provided such that its mounting height can be changed, whereby the size of the space formed between the first plate and the second plate can be changed. The drying device according to claim 1, wherein the drying device is configured as described above. 4. The drying apparatus according to claim 1, wherein the base material travels on a wire net placed on a metal plate such as an aluminum plate.