JPH06265265A - Drying furnace - Google Patents

Abstract

PURPOSE:To dry and cure a liquefied substance coated on both surfaces of a plate-shaped processed article such as printed circuit boards, optical disks and the like without damaging the coated surfaces. CONSTITUTION:A conveyor-type infrared ray drying furnace acts to dry and cure a liquefied substance while conveying a plate-shaped processed article 20, of which both surfaces are coated with the liquefied substance. The drying furnace comprises a pair of conveyor chains 16 disposed in parallel to each other with a predetermined spacing therebetween and drivingly rotated, a plurality of support bars 14 each including a pair of inclined support portions 14a, which diverge upward, and a central connecting portion 14b which connects the support portions 14a to each other, each of these support bars 14 being secured at both ends thereof to the pair of conveyor chains 16 with both ends spaced from each other, and a plurality of infrared ray heaters 22 provided above and below the conveyor chains 16 in spaced relationship to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed wiring board coated with ink or resin on both sides, or a disc such as an optical disc coated with resin after precision polishing, which can be dried and cured without damage. It relates to a contact-holding drying oven.

In the production of a printed wiring board or a disc such as an optical disc, it is necessary to apply a step of applying ink, resin or the like on the surface and drying and curing the applied liquid material in a drying oven. If you touch the coated surface before curing, it will be scratched and it will be a defective product. Therefore, it is necessary to hold these without contacting the coated surface of the printed wiring board, optical disk, etc., and to dry and cure them.

Since a printed wiring board and an optical disk are required to have high reliability, it is necessary to process them so that there is no difference between the two surfaces. However, in the conventional single-sided holding type drying oven, the printed wiring board and the optical disk processed on both sides are damaged, so it is necessary to dry and cure one side by one side, resulting in differences in sensitivity, hardness, etc. on both sides. .

If there is a drying oven capable of holding both sides in a non-contact manner, it is possible to simultaneously dry and cure the coated surfaces of the printed wiring board and the optical disc, both sides of which are coated at the same time.

[0005]

2. Description of the Related Art At present, an infrared conveyor drying oven, a hot air conveyor drying oven, a hot air box drying oven, etc. are used for drying and curing a printed wiring board or an optical disk coated with a liquid substance such as ink or resin.

The following is used as an infrared conveyor drying oven. (1) As shown in FIG. 26, an infrared conveyor drying furnace in which a printed wiring board 4 is horizontally placed on a holding bar 3 attached to a chain conveyor 2 and the chain conveyor 2 continuously conveys the printed wiring board. 5 is a chain guide rail.

(2) As shown in FIG. 27, the printed wiring board 4 is placed on the metal net 6 attached to the chain conveyor 2.
Is an infrared conveyor drying oven that horizontally conveys the printed wiring board by the chain conveyor 2.

(3) As shown in FIG. 28, an infrared conveyor drying furnace in which the roller conveyor 7 holds and conveys the lower surface of the printed wiring board 4. Further, as the hot air conveyor drying furnace, the following one is used.

(4) As shown in FIG. 29, the printed wiring board holder 10 is attached to the chain conveyor 8 via the mounting member 9.
A hot-air conveyor drying oven in which the printed wiring board 4 is mounted and held by the holder 10 so as to be continuously conveyed by the movement of the chain conveyor 8.

(5) As shown in FIG. 30, the printed wiring boards 4 are vertically held one by one in the concave portions of the comb-shaped jig 11 attached to the chain conveyor 8 and the chain conveyor 8 is moved. A hot-air conveyor drying oven that continuously conveys.

The hot air box drying furnace is as follows. (6) As shown in FIG. 31, a hot air box drying oven for drying while holding the printed wiring boards 4 vertically in the recesses of the comb-shaped jig 11 one by one. In this drying oven, it is necessary to insert the printed wiring board 4 at a right angle to the direction of hot air.

(7) As shown in FIG. 32, a hot air box drying furnace in which the printed wiring board 4 is horizontally placed on a jig 12 for holding both ends of the printed wiring board 4 and a plurality of layers are stacked and dried.

[0013]

In any of the infrared conveyor drying ovens shown in FIGS. 26 to 28, since the lower surface of the printed wiring board is held, when the printed wiring board coated on both sides or the optical disk is placed, There is a problem that the coated surface of is damaged. In addition, since it is conveyed by using a holding bar, a wire mesh, and a roller, there is a problem in that the heating of the printed wiring board becomes uneven and the hardness and sensitivity of the coating surface become uneven.

In the hot air conveyor drying furnace shown in FIG. 29,
Since the lower surface of the printed wiring board is held, there is a problem that it cannot be used for a printed wiring board or an optical disk coated on both sides like the infrared conveyor furnace described above.

Further, in the hot air conveyor drying furnace shown in FIG. 30, there is a problem that the portion to be inserted into the comb jig cannot be coated. Furthermore, there is a limitation that the direction of hot air needs to be parallel to the printed wiring board.

In the hot air box drying furnace shown in FIG. 31,
Since the lower part is sandwiched and held, there is a problem that the part to be inserted cannot be applied, and there is a limitation that the direction of hot air needs to be parallel to the printed wiring board. Further, when trying to hold a large printed wiring board, since the lower part is held by sandwiching it, there is a problem that the printed wiring board is bent and adjacent printed wiring boards come into contact with each other to damage the coating surface.

The present invention has been made in view of the above points, and an object of the present invention is to apply a double-sided printed wiring board, an optical disk, or other flat plate-shaped product without damaging the coated surface. A double-sided non-contact holding and drying oven capable of drying and curing the formed liquid material.

[0018]

In order to solve the above-mentioned problems, the present invention provides an infrared conveyor drying furnace for drying and curing a liquid product while conveying a flat plate-shaped product having liquid products applied on both sides thereof. And a pair of rotationally driven transfer chains that are arranged in parallel with each other with a predetermined distance therebetween, a pair of inverted C-shaped tilt holding portions, and a central connecting portion that connects the pair of tilt holding portions. And a plurality of holding bars whose both ends are fixed to the pair of transport chains so as to be separated from each other, and a plurality of infrared heaters which are separately arranged on the upper side and the lower side of the transport chain. An infrared conveyor drying furnace characterized by the above.

According to another aspect of the present invention, there is provided a hot air conveyor drying furnace for drying and curing a liquid product while transporting a flat plate-shaped product coated with the liquid product on both sides thereof, which are spaced apart from each other by a predetermined distance. A pair of rotationally driven transfer chains arranged in parallel, a tilted holding portion capable of floating and holding the flat plate-shaped processed product, and a processed product holder fixed to the transfer chain at a predetermined angle. Provided is a hot-air conveyor drying furnace, which is provided with an air-blowing means for introducing hot air into the drying furnace and an exhausting means for exhausting the inside of the drying furnace.

According to still another aspect of the present invention, there is provided a hot air box drying oven for drying and curing a liquid material applied to both surfaces of a flat plate-shaped product, which comprises an upright supporting member and a periphery of the upright supporting member. A plurality of horizontal supporting members fixed in a plurality of vertical directions, and a tilt holding portion capable of floating and holding the flat plate-shaped product, and a holding basket fixed to each of the horizontal supporting members. There is provided a hot air box drying furnace including: a blowing means for introducing hot air into the drying furnace; and an exhausting means for exhausting the inside of the drying furnace.

[0021]

According to the infrared conveyor drying oven of the present invention, the inclined product of the holding bar is applied to dry and cure the liquid material applied to both sides of the flat plate-shaped product while holding and conveying the flat plate-shaped product. The liquid material can be efficiently dried without damaging it.

According to the hot-air conveyor drying oven of the present invention, the inclined holding part of the workpiece holder floats the application surface of the liquid product of the flat plate-shaped product so that the flat plate-shaped product is held and conveyed while being coated on both sides. Since the liquid material is dried and cured, the applied liquid material can be efficiently dried without damaging it.

According to the hot-air box drying oven of the present invention, the liquid material applied to both sides of the flat plate-shaped product is floated by the inclined holding portion of the holding basket to hold the flat plate-shaped product, and the liquid material is dried and cured. Therefore, the applied liquid material can be efficiently dried without damaging it.

[0024]

Embodiments of the present invention will now be described in detail with reference to the drawings. First, referring to FIG. 1, there is shown a sectional view of an infrared conveyor drying furnace according to an embodiment of the present invention. 14
Is a holding bar that holds the printed wiring board 20, and has a pair of inverted C-shaped tilt holding portions 14a and a central connecting portion 14b that connects the pair of tilt holding portions 14a, and both ends thereof. It is fixed to the transport chain 16 with.

The carrying chain 16 is carried while being guided by the chain guide rail 18. Multiple holding bars 14
Are fixed to the transport chain 16 at a predetermined distance from each other, and the printed wiring board 20 coated with a liquid substance such as ink or resin on both sides thereof is approximately horizontal at the inclined holding portion 14a of the holding bar 14 at its end portion. It is transported while being held.

A plurality of infrared heaters 22 are provided on the upper side and the lower side of the transport chain 16 at predetermined intervals so as to extend in a direction perpendicular to the transport direction of the transport chain 16.

When the conveyor drying furnace is operated, dust is generated on the terminal portion 22a of the infrared heater 22 due to heat rust, and dust is also generated on the transport chain 16 due to friction and heat rust. Therefore, the partition wall 24 is provided so as to separate these dust generating portion and the printed wiring board drying portion. By providing the partition wall 24 as described above, even if dust is generated in the dust generating portion, it is possible to reduce the adhesion of dust to the surface of the printed wiring board 20. Reference numeral 26 is an outer heat insulating wall of the drying furnace.

Referring to FIG. 2, there is shown a schematic plan view of FIG. 1 in which the infrared heater is omitted, and a plurality of holding bars 14 for holding the printed wiring board 20 are separated from each other by a predetermined distance and are arranged on the carrier chain 16. The installed state is shown.

Next, the non-contact holding of the printed wiring boards 20a and 20b having different widths will be described with reference to FIG.
As shown in FIG. 3A, the inclined holding portion 1 of the holding bar 14
4a allows the large printed wiring board 20a and the small printed wiring board 20b to be held in non-contact with each other without contacting the coating surface.

Further, as shown in FIG. 3B, even when the printed wiring boards 20a and 20b are placed on the holding bar 14 in an inclined state, these printed wiring boards do not come into contact with the coated surface. 20a and 20b can be held in a non-contact manner.

The holding bar 14 is an inverted V-shaped inclined holding portion 1
Since the 4a are connected by the central connecting portion 14b, the printed wiring board is effectively prevented from falling in the drying furnace. Referring to FIG. 4, a method of disposing the infrared heater 22 is shown. FIG. 4 (A) is a plan view and FIG. 4 (B) is a side view thereof. The infrared heaters 22 are arranged at equal intervals above and below the transport chain 16 with the holding bars 14 interposed therebetween.

In this embodiment, the printed wiring board 20 is held away from the central connecting portion 14b of the holding bar 14, so that
As shown in FIG. 5, there is no generation of a portion where the radiant heat of the infrared heater 22 does not reach the printed wiring board 20 due to the shadow of the holding bar 14, and the liquid matter such as paint applied to the printed wiring board 20 is not removed. It can be dried and cured likewise.

When the printed wiring board 20 is held in contact with the holding bar as in the prior art, the heat of the infrared heater is prevented from partially reaching the printed wiring board 20 by being hindered by the holding bar, and the printed wiring board is not reached. Although unevenness will occur in the drying of the liquid material applied to the above, since the holding bar 14 and the printed wiring board 20 are separated from each other in this embodiment, such a problem can be reduced.

Referring to FIG. 6, a plurality of partition walls 24 are also arranged at predetermined intervals in the transport direction of the transport chain 14. By constructing the intermediate partition wall 24 'from a reflection plate as shown in FIG. 7, it is possible to diffusely reflect the radiant heat of the infrared heater 22 and reduce the shadow of the holding bar 14 on the printed wiring board 20. You can
The temperature distribution of the printed wiring board 20 can be equalized.

Next, the output control of the infrared heater will be described with reference to FIG. Since the large printed wiring board 20a and the small printed wiring board 20b have different widths, the height held by the holding bar 14 changes. Therefore, the amount of heat received from the upper and lower infrared heaters 22 changes depending on the size of the printed wiring board, and the amount of heat received by the upper surface and the lower surface of the printed wiring board changes.

In order to prevent this, a distance sensor 28 is provided as shown in FIG. 8, the height of the printed wiring boards 20a and 20b is measured by the distance sensor 28, and the measurement result is input to the computer 30. Computer 30
The calculation result of is output to the thyristor 32,
The output of the upper and lower infrared heaters 22 is controlled by so that the amount of heat received by the upper and lower surfaces of the printed wiring board becomes constant regardless of the size of the printed wiring board.

Referring to FIG. 9, there is shown an embodiment of an infrared conveyor drying furnace in which the inclined conveying roll 34 is adopted as the conveying means. As shown in FIG. 9B, the plurality of pairs of transport rolls 34 are arranged so as to be inclined in a substantially V shape so that the inner sides thereof are lower, so that the plurality of pairs of conveyance rolls 34 are inclined without contacting the application surface of the printed wiring board 20. While the printed wiring board 20 is being transported by the transport roll 34, the liquid material applied to both surfaces of the printed wiring board 20 can be dried and cured.

Referring to FIG. 10, there is shown an infrared conveyor drying furnace according to an embodiment of the present invention in which a taper roll is used as a conveying means. As shown in FIG. 10B, a plurality of pairs of tapered transport rolls 36 are arranged so that the inner diameters facing each other are small. By arranging the tapered transport rolls 36 in this manner, the liquid material applied to both surfaces of the printed wiring board 20 can be transported while the printed wiring board 20 is transported without damaging the application surface of the printed wiring board having the liquid material applied to both surfaces. Can be dried and cured.

Referring to FIG. 11, there is shown an embodiment of an infrared conveyor drying furnace which employs tapered wheels as a conveying means. A pair of tapered wheels 40 are fixed to the drive shaft 38 with a predetermined distance therebetween, and the drive shaft 38 is rotatably supported by a bearing 42. This embodiment is effective when the width of the printed wiring board 20 is constant.

Referring to FIG. 12, there is shown an embodiment of an infrared conveyor drying furnace which employs a chain with an inclined block as a conveying means. Inclined block 4 on the transport chain 16
4 is fixed, and the inclined wiring block 44 conveys the printed wiring board 20 while supporting it. Similar to the embodiment shown in FIG. 11, this embodiment is also effective when the width of the printed wiring board 20 is constant.

Next, referring to FIG. 13, there is shown an embodiment of an infrared conveyor drying furnace which employs a panel heater instead of the pipe-shaped infrared heater. Since the panel heater 46 disperses the shadow of the holding bar 14 attached to the transport chain 16, it is desirable that the panel heater 46 be attached while being inclined alternately.

Next, an embodiment of the hot air conveyor drying furnace according to the present invention will be described with reference to FIGS. 14 to 22.
As shown in FIGS. 14 and 15, a plurality of mounting members 48 are fixed at predetermined intervals over the pair of transport chains 16 guided and transported by the chain guide rails 18. As best shown in FIG. 15, a printed wiring board holder 50 is attached to each mounting member 48 with a slight inclination from the vertical direction, and each printed wiring board holder 50 applies liquid material to both surfaces. The printed wiring board 20 is held without the holder 50 contacting the coated surface.

The outer heat insulating wall 52 has a ventilation duct 54 for sending hot air into the drying furnace and an exhaust duct 56 for exhausting the inside of the drying furnace.
Is provided. Reference numeral 58 is a partition wall that separates the transport chain 16 and the printed wiring board drying section in the drying furnace. By providing the intermediate partition wall 58, it is possible to reduce adhesion of dust generated due to wear of the transport chain 16 or thermal rust to the printed wiring board 20.

The printed wiring board 20 is leaned and held by the printed wiring board holder 50, and its coated surface is dried and hardened by the hot air introduced into the drying furnace while being transported by the transport chain 16 in the direction of arrow A in FIG. To be done.

Referring to FIG. 16, there are shown a plan view (A) and a side view (B) of the printed wiring board holder 50, respectively. FIG. 17 is a cross-sectional view taken along the line AA of FIG. 16A, and FIG. 17A shows a state in which a wide printed wiring board 20a and a narrow printed wiring board 20b are horizontally held. Reference numeral 17 (B) shows a state of maintaining the inclination.

As shown in FIG. 17, since the end portions of the printed wiring boards 20a and 20b are held by the inclined holding portions 50a provided on both sides of the printed wiring board holder 50,
The liquid material applied to both sides of the printed wiring board can be retained without damage. As shown in FIG. 17B, even when the printed wiring boards 20a and 20b are tilted to some extent, the coated surfaces can be held without being damaged.

Referring again to FIG. 16, since the printed wiring board holder 50 is formed in a rake shape, the fingers 60 of the handling device can be inserted from the lateral direction, whereby the printed wiring board 20 can be inserted by the handling device. It can be automatically placed in the printed wiring board holder 50.

Referring to FIG. 18, a plan view (A) and a side view (B) of a disc holder 62 for holding an optical disc or the like.
It is shown. The disc holder 62 is an inclined holding portion 62.
Since a is formed not only on both sides of the holder but also on the tip portion, the optical disk 64 coated with the liquid material on both sides can be held without contacting the coating surface.

FIG. 19 is a sectional view taken along line AA of FIG. 18A, and FIG. 19A shows an optical disc 6 having a large diameter.
4A and an optical disc 64b having a small diameter are horizontally held, and FIG. 19B shows a state where they are tilted and held.

Since the disc holder 62 is also formed in a rake shape, it is possible to insert the finger 60 of the handling device from the lateral direction, and the optical disc 64 is automatically inserted into the disc holder 62 using the handling device. can do.

Referring to FIG. 20, there is shown a side view when the printed wiring board is rotated and conveyed. The printed wiring board 20 is automatically loaded into the printed wiring board holder 50 by the handling device at the lowermost position. It

FIG. 21 shows a side view when the disc is rotationally conveyed. The optical disc 64 is automatically loaded into the disc holder 62 by the handling device at the lowermost position. 22, another embodiment of a hot air conveyor drying oven is shown. 22A is a plan view and FIG. 22B is a side view thereof.

A multi-stage holding basket 68 is fixed on the conveyor belt 66, and the upright supporting member 7 is attached to the multi-stage holding basket 68.
0 is set up. A plurality of upright supporting members 72 are fixed around the upright supporting member 70 in the vertical direction, and a disc holding basket 74 is attached to each lateral supporting member 72.

Since each disc holding basket 74 has the inclined holding portion 74a on the periphery thereof, the inclined holding portion 7 does not damage the coating surface of the optical disc coated with the liquid material on both sides.
The optical disc can be held by 4a.

By sending hot air while the multi-stage holding basket is being conveyed by the conveying belt 66, the coated surface of the optical disc held in the disc holding basket 74 can be dried and cured. Reference numeral 76 is a heat insulating wall of the drying furnace.

Next, referring to FIG. 23, there is shown an embodiment of an infrared conveyor drying furnace using the disk holding basket 74 described in the embodiment of FIG. A support member 78 is fixed to the pair of transport chains 16, and a disk holding basket 74 is attached to the support member 78. The inclined holding portion 74a of the disc holding basket 74 allows the optical disc 64
By transporting while holding the end portion of the optical disc 64, the coated surface of the optical disc 64 can be dried and cured by the heat of the infrared heater 22. Reference numeral 80 is a heat insulating wall of the drying furnace.

Referring now to FIG. 24, there is shown an embodiment of a disk box drying oven. FIG. 24A is a horizontal sectional view and FIG. 24B is a vertical sectional view. Insulation wall 82 of drying oven
A multi-stage holding table 84 is fixed on the upper side of the multi-stage holding table 8
An upright support member 86 is erected on the upper part of the table 4.

Around the upright support member 86, a plurality of lateral support members 88 are fixed in a plurality of stages in the vertical direction,
A disk holding basket 74 is attached to each lateral support member 88. By holding the ends of the optical disc 64 by the inclined holding portions 74a formed around the disc holding basket 74, it is possible to dry and cure the liquid substance while holding the optical disc without damaging the coated surfaces on both sides. .

In this embodiment, since the disk holding baskets 74 are combined in multiple stages, it is possible to dry a large number of coated surfaces of optical disks at one time. Further, by rotating the upright supporting member 86 by the rotating mechanism, the optical disc 64 accommodated in the disc holding basket 74 can be heated uniformly.

Although not shown in the drawing, a blowing duct for introducing hot air into the drying oven and an exhaust duct for exhausting the drying oven are provided on the drying oven wall 82. Referring now to FIG. 25, there is shown an embodiment of a printed wiring board box drying oven similar to the disk box drying oven described in FIG. A printed wiring board holding basket 90 is attached to each of the lateral support members 88 attached to the upright support member 86 in a plurality of stages.

Since the other structure and operation of this embodiment are the same as those of the embodiment described in FIG. 24, the description thereof will be omitted.

[0062]

The double-sided non-contact holding and drying oven of the present invention has the following effects. (1) Since the end faces are held, a flat plate-shaped product whose both surfaces are coated with a liquid substance can be held in a non-contact manner and dried and cured.

(2) When the holder and the holder are attached to a conveying means such as a chain, the liquid product application surface can be dried and cured while the plate-shaped processed products are continuously conveyed. (3) Since the inclined holding portions of the holding bar are connected by the central connecting portion, the printed wiring board can be prevented from falling.

(4) Since the central connecting portion of the holding bar is separated from the printed wiring board, the influence of the holding bar can be reduced and uniform heating with good temperature distribution can be performed. (5) By separating the transport drive section and the heater terminal section from the drying section, it is possible to reduce the adhesion of dust to the flat plate-shaped product.

(6) By rotating the holding basket in the drying oven, the influence of temperature unevenness in the hot air box drying oven can be eliminated and the flat plate-shaped product can be heated uniformly. (7) By installing the holding baskets in multiple stages, a large amount of heating can be performed at one time.

[Brief description of drawings]

FIG. 1 is a sectional view of an example of an infrared conveyor drying furnace.

FIG. 2 is a plan view of a transport unit.

FIG. 3 is an explanatory diagram of non-contact holding.

FIG. 4 is an explanatory diagram of an infrared heater arrangement.

FIG. 5 is an explanatory diagram of an influence of a holding bar.

FIG. 6 is an explanatory diagram of a partition.

FIG. 7 is an explanatory diagram of diffused reflection by a partition wall.

FIG. 8 is an explanatory diagram of output control of a heater.

FIG. 9 is a diagram showing an embodiment of an infrared conveyor drying furnace that employs inclined rolls.

FIG. 10 is an embodiment diagram of an infrared conveyor drying furnace employing a taper roll.

FIG. 11 is an example view of an infrared conveyor drying furnace that employs tapered wheels.

FIG. 12 is an example of an infrared conveyor drying furnace that employs a chain with an inclined block.

FIG. 13 is an embodiment diagram of an infrared conveyor drying furnace in which a panel heater is used as a heating means.

FIG. 14 is a sectional view of an example of a hot air conveyor drying furnace.

15 is a cross-sectional view taken along the line AA of FIG.

FIG. 16 is an explanatory diagram of a printed wiring board holder.

FIG. 17 is an explanatory diagram of a holding state of the printed wiring board.

FIG. 18 is an explanatory diagram of a disc holder.

FIG. 19 is an explanatory diagram of a disc holding state.

FIG. 20 is a side view when the printed wiring board is rotationally conveyed.

FIG. 21 is a side view when a disc is rotationally conveyed.

FIG. 22 is a view showing another embodiment of the hot air conveyor drying furnace.

FIG. 23 is an example view of an infrared conveyor drying furnace using a holding basket.

FIG. 24 is an example view of a disk box drying furnace.

FIG. 25 is an example view of a box drying oven for a printed wiring board.

FIG. 26 is a diagram illustrating a conventional example.

FIG. 27 is another conventional example diagram.

FIG. 28 is a view showing still another conventional example.

FIG. 29 is a view showing still another conventional example.

FIG. 30 is a view showing still another conventional example.

FIG. 31 is a view showing still another conventional example.

FIG. 32 is a view showing still another conventional example.

[Explanation of symbols]

 14 holding bar 16 transport chain 20 printed wiring board 22 infrared heater 24 partition wall 28 distance sensor 50 printed wiring board holder 62 disk holder 64 optical disk

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hitoshi Ogawa 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor Kenji Mimura 12-1, Satsuki Town, Kanuma City, Tochigi Prefecture In-house (72) Inventor Nobuaki Shinohara 12-1 Satsuki-cho, Kanuma-shi, Tochigi Alumex Kanuma Plant, Inc.

Claims (12)

[Claims] 1. A flat plate-shaped product having a liquid material applied on both sides.
An infrared conveyor drying furnace for drying and curing the liquid material while transporting (20), comprising a pair of rotationally driven transport chains (16) arranged in parallel with each other with a predetermined gap, It includes a pair of character-shaped tilt holding portions (14a) and a central connecting portion (14b) that connects the pair of tilt holding portions (14a), and is separated from each other by the pair of transport chains (16). An infrared conveyor characterized by comprising a plurality of holding bars (14) fixed to each other, and a plurality of infrared heaters (22) arranged on the upper side and the lower side of the transport chain (16) so as to be separated from each other. drying furnace. 2. A partition wall (24) is provided in the drying furnace so that the transport chain (16) and the terminal portion of the infrared heater (22) are transported from the central portion for transporting the flat plate-shaped product (20). The infrared conveyor drying furnace according to claim 1, which is separated. 3. The infrared conveyor drying furnace according to claim 2, wherein the partition wall (24) is composed of a reflecting plate. 4. A distance sensor (28) for measuring the height of a conveyed flat plate-shaped product (20) is provided, and an infrared ray on the upper side of the conveyance chain (16) is based on the output of the distance sensor (28). The amount of heat that reaches the flat plate-shaped product (20) from the heater (22) and the flat plate-shaped product (2) from the infrared heater (22) below the transport chain (16).
The infrared conveyor drying furnace according to any one of claims 1 to 3, wherein the heat amount reaching (0) is controlled to be substantially equal. 5. A plate-shaped processed product having a liquid material applied on both sides.
An infrared conveyor drying furnace for drying and curing the liquid material while transporting (64), comprising a pair of rotationally driven transport chains (16) arranged in parallel at a predetermined distance from each other, A support member (78) having both ends fixed to the transport chain (16), and an inclined holding portion capable of floating and holding the flat plate-shaped product (64)
(74a) and a holding basket (74) fixed to the support member (78)
And a plurality of infrared heaters (22) arranged on the upper side and the lower side of the transfer chain (16) so as to be separated from each other, respectively. 6. The infrared conveyor drying furnace according to claim 5, wherein the holding basket (74) has a rake-like shape having a space into which a hand portion of a sandwich type handling device is inserted. 7. A plate-shaped processed product having a liquid material applied on both sides.
A hot air conveyor drying oven for drying and curing the liquid material while transporting (20), a pair of rotationally driven transport chains (16) arranged in parallel with each other at a predetermined interval, and the flat plate shape. Inclined holding part that allows the processed product (20) to float and be held
(50a), the workpiece holder (50) fixed to the conveyor chain (16) at a predetermined angle, a blower (54) for introducing hot air into the drying oven, and the inside of the drying oven A hot air conveyor drying oven, comprising: an exhaust means (56) for exhausting. 8. The partition wall (58) is provided in the drying furnace to separate the transport chain (16) from a central portion for transporting the flat plate-shaped product (20). Hot air conveyor drying oven. 9. The hot air conveyor drying oven according to claim 7, wherein the processed product holder (50) has a rake shape having a space into which a hand portion of a sandwich type handling device is inserted. 10. A hot-air conveyor drying furnace for drying and curing a liquid-like flat product (20, 64) coated with a liquid material on both sides, the endless conveyor belt being rotationally driven. (66), an upright support member (70) fixed on the conveyor belt, and a plurality of lateral support members (72) fixed around the upright support member (70) in a plurality of vertical stages. ), And a holding basket (74) fixed to each of the lateral direction support members (72), which has an inclined holding portion (74a) capable of floating and holding the flat plate-shaped product (20, 64), A hot-air conveyor drying furnace, comprising: a blowing means for introducing hot air into the drying furnace; and an exhausting means for exhausting the inside of the drying furnace. 11. A hot air box drying oven for drying and curing a liquid material applied on both sides of a flat plate-shaped product (20, 64), comprising an upright support member (86) and the upright support member (86). A plurality of lateral support members (88) fixed around the circumference and a plurality of vertical stages are provided, and a tilt holding portion (90a, 74a) capable of floating and holding the flat plate-shaped product (20, 64). And a holding basket (90, 74) fixed to each of the lateral support members (88), an air blowing unit for introducing hot air into the drying oven, and an exhausting unit for exhausting the inside of the drying oven. A hot-air box drying oven characterized by that. 12. The hot air box drying oven according to claim 11, further comprising rotating means for rotating the upright supporting member (86).