JPH01203076A - Coating and drying equipment for lamellate work - Google Patents

Abstract

PURPOSE:To coat a lamellate work in a series of operation and to stabilize the quality by joining a stock base, a transfer device, a first and second coaters, a first and second dryers with the carrier conveyors respectively and also arranging a cooler to the downstream side of the first dryer. CONSTITUTION:The lamellate work superposed on a stock base 2 with a trans fer device 3 is taken out on a first carrier conveyor 4 and color coating is performed to the work introduced by this carrier conveyor with a first coater 5. Furthermore, the work carried out from this coater is introduced into a first dryer 7 via a second carrier conveyor 6. After drying this work while transferring it in the first dryer, it is introduced into a cooler 8 via a third carrier conveyor 9 to lower the temp. Thereafter, the work is transferred to a second coater 10 via a fourth carrier conveyor 11 and the coated work is introduced into a second dryer 12 via a fifth carrier conveyor. The coated film is completely dried in this dryer and the work is transferred to a loading device 14 via a sixth carrier conveyor 13 and loaded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a coating drying apparatus for plate-shaped workpieces, which can efficiently coat and dry the workpieces through a series of operations.

[Conventional technology]

For example, in buildings, not only the inner walls but also the outer walls are being formed using plate-like bodies.

For example, the plate-like bodies that form such external walls, that is, the exterior panels, are often painted to enhance the appearance and durability of buildings, and the plate-like bodies used in buildings are often coated in large quantities. Since it is used for this purpose, it is important to be able to produce it efficiently and at low cost while maintaining stable quality.

Conventionally, such plate-shaped bodies have been painted using a so-called badge system in which one process is performed for each loft. Furthermore, organic and inorganic paints are used for painting, and conventionally, different drying equipment has been used depending on the paint.

[Problem to be solved by the invention]

However, such conventional badge systems have poor production efficiency and tend to vary in quality from production lot to production lot. Furthermore, those that use different drying devices for organic coatings and inorganic coatings lack versatility.

The present invention can coat such plate-shaped workpieces through a series of work lines, increasing productivity and stabilizing quality. Furthermore, after painting, by making it possible to heat and dry with ventilation, it is possible to apply an inorganic coating material. It is an object of the present invention to provide a workpiece coating drying apparatus that can solve the above-mentioned problems by being able to dry both an organic coating agent and an organic coating agent.

(Means for Solving the Problems) The present invention provides a stock stand for storing stacked plate-shaped works, a transfer device for sequentially taking out the works stored on the stock stand from above, and a transfer device for taking out the works stored in the stock stand from above. a first conveyor to which the transferred workpieces are transferred; a first coating device using a roll coater that applies color coating while transferring the workpieces carried in by the first conveyor; a second conveyor that transports the workpiece coated by the coating device; a first drying device that heats and dries the workpiece carried in by the second transport conveyor using far infrared rays and with ventilation during the transfer; a cooling device that cools the work heated and dried by the first drying device while receiving and transferring the work;
A third conveyor that conveys the workpiece cooled by the cooling device, a second coating device that clear coats the workpiece while conveying the workpiece carried in by the third conveyor, and the second coating device. a fourth conveyor for conveying the painted work; a second drying device for heating and drying the work carried in by the fourth conveyor while using far infrared rays and with ventilation; This is a coating drying device for plate-shaped workpieces, which comprises a fifth conveyor that conveys the workpieces dried by the second drying device, and a stacking device that stacks the workpieces conveyed by the fifth conveyor.

[Effect]

The apparatus of the present invention is configured to take out the workpieces stacked on the stock stand by the transfer device to the first conveyor, and to transfer the workpieces carried in by the first conveyor to the first conveyor.
Color painting is performed using a painting device. In the first coating device, by using a roll coater, the workpiece can be efficiently coated. Furthermore, the work carried out from the first coating device is carried into the first drying device via a second conveyor. The first drying device dries the work while transferring it. Moreover, since drying is performed using far-infrared rays generated by hot air heating and with ventilation, even coatings using organic or inorganic solvents can be dried safely and efficiently. In addition, the workpiece dried in the first drying device is
It is carried into a cooling device via a third conveyor to reduce its temperature, and then transferred to a second coating device via a fourth conveyor. The second transfer device uses a spray gun, and applies a so-called clear coating to increase the durability of the surface and make the surface smooth, thereby preventing the adhesion of flakes and the like. Furthermore, the workpiece is carried into the second drying device via the fifth conveyor. Similarly to the first drying apparatus, the second drying apparatus uses far infrared rays to perform ventilation while drying, and therefore, even when an organic solvent is used, drying can be performed safely. Also, the dried workpiece is
The coating drying process of the workpiece can be completed by being transferred to the loading device via the transport conveyor and loaded thereon.

Furthermore, the first and second drying devices have a board surface temperature of 40 to 20
The temperature can be adjusted to about 0°C, and the residence time in the oven can be adjusted to about 3 to 30 minutes, and the transfer speed can be adjusted, making it possible to dry special coatings over a wide range.

Furthermore, the second conveyor can be provided with an inspection device that selects and lifts the conveyed workpieces, which is useful for inspecting the quality of the color coating.

(Example〕 An embodiment of the present invention will be described below based on the drawings.

In FIG. 1, the device 1 of the present invention includes a stock stand 2,
The transfer device 3, the first conveyor 4, the first coating device 5, the first conveyor 6, the first drying device 7, the cooling device 8, and the third conveyor 9. , second paint job? l110, the fourth conveyor 11, and the second drying bag! 12, a fifth conveyor 13, and a loading device 1
In this example, the second transport conveyor 2 and the third transport conveyor 3 are provided with inspection devices 15 and 16, and downstream of the second drying device 12, A cooling device 17 is provided between the fifth conveyor 13 and the fifth conveyor 13 . The second transport conveyor 6 is provided with one redirection device 20 for transferring the workpiece W by turning the workpiece W at right angles, and the third transport conveyor 11 is provided with two redirection devices 21 and 22.

FIG. 2 schematically shows the processing performed on the workpiece W by the apparatus 1. The workpiece W is colored by the first coating apparatus 5, and then subjected to a first drying process. It is dried by a device 7 and cooled by a cooling device 8. After cooling, a clear coating is applied by the second coating device 10, and then dried by the second drying device 12, and in this example, the cooling device 17 is used to cool it. In FIG. 2, numbers in parentheses indicate devices that perform each process.

As shown in FIG. 3, the stock stand 2, in this example,
This is a so-called table lifter that includes a top plate 31 that can be raised and lowered, and a roller conveyor 32 is provided on the top surface, and in this example, a plurality of stock stands 2- are arranged side by side.

Thereby, the workpieces W stacked on the pallet P can be stored and the height of the workpieces W on the uppermost stage can be made constant by raising and lowering the upper plate 31.

As shown in FIGS. 3 and 4, the transfer device 3 uses a cylinder to move a rail 37 at the upper end of a frame 36 provided across the stock table 2 and the first conveyor 4. An elevating frame 38 is attached to the cart for vertical movement, and a plurality of suction units 39- are disposed downwardly on the elevating frame 38. They can be taken out one by one and transferred onto the first transport conveyor 4.

In order to facilitate the transfer, the work W can be sequentially transferred into the frame 36 along with the pallet P by the roller conveyor 32 of the stock table 2, and the pallet P is provided with the first conveyor 4 sandwiched therebetween. The pallet is discharged using a discharge conveyor 40 for carrying out the pallet. Note that a part of the first conveyor 4 is provided with a traversing conveyor (not shown) which is movable up and down for passing pallets.

Further, the suction device 39 has a support shaft 41 provided on its upper surface attached to a horizontal piece 42 formed on the elevating frame 38 such that it cannot be prevented from being pulled out and can be moved up and down, and a spring 43 is attached between the support shaft 41 and the horizontal piece 42. intervene. Therefore, as the elevating frame 38 descends, the horizontal piece 42 presses the suction device 39 against the workpiece W via the spring 43.

As a result, the shock acting on the workpiece W is absorbed, and even when a groove or the like exists on the workpiece W, the pad "i" enters into the groove part and can be reliably attracted by the spring 43. It is detected by a detector 44. Reference numeral 45 in the figure is a connecting fitting leading to the vacuum device.

The first transport conveyor 4 is composed of a roller conveyor, and carries the work W transferred by the transfer device 3 into the first coating device 5.

The first coating device 5 is provided with a straightening device 47 upstream of a so-called roll coater 46, as schematically shown in FIG. The roll coater 46 includes a feed roller 50 immersed in a paint reservoir 49 that stores the supplied paint, and an intermediate roller 5.
1, the paint is supplied to the paint roller 52, and the workpiece W is
The coating roller 52 and its lower receiver pass between the roller 53 and color coating is applied to the upper surface thereof.

Orthodontics again? &47 consists of a lower roller 5i1 having tapered portions at both ends, and an upper roller that can be pressed down by a cylinder and has a presser ring 56 located above the tapered portion. Further, the straightening device 47 improves accuracy by feeding the workpiece W to the roll coater 46 while correcting the warpage WA that tends to occur at both ends of the workpiece W as shown on the left side in FIG. Good painting is possible. This roll coater 46 also coats colored organic,
Or apply an inorganic paint. Orthodontics? 1!47 is provided with a detector 57 that detects the work W before and after the upper roller so that the position can be changed freely.

Further, the work W is carried out using the second transport conveyor 6.

The second conveyor 6 consists of a roller conveyor and is provided with an inspection device 15.

The inspection device 15 is connected to the conveyor 6 as shown in FIG. 6.7.
The support frames 62 and 62 on both sides that receive the rollers 61 are cut out at an interval smaller than the length of the workpiece W, and a support frame 62 is located outside of one support frame 62 and has one end pivotably supported in the cutout. The arms 63 and 63 can be fitted in and out. Furthermore, arm 63
By connecting the other end with a joint plate 64 and attaching a cylinder 65 to the joint plate 64, the cylinder can be raised as shown in FIG. 7 by extension.

In the inverted state, the upper surface of the arm 63 is positioned below the transport surface of the second transport conveyor 6, so that the arm 63 can freely pass the workpiece W. Further, the detection device 66 detects the workpiece W, and if necessary, the electric motor 67 for driving the roller 61 is stopped and the cylinder 65 is extended to selectively flip up the workpiece W, and the finished state of the color coating is inspected as appropriate. Further, when the arm 63 is in the raised state, a gap can be formed between the lower surface of the arm 63 and the conveying surface, through which the workpiece W can pass, so that the workpiece W can continue to be conveyed freely during the inspection. The rollers 61 can be rotated in unison by meshing a chain wheel 69 provided at one end with a chain 70 that is rotated by the electric motor 67.

The opening degree adjusting device 20 includes a vertical movement section connected to a roller conveyor and a transverse movement section using a chain.

The roller conveyor of the vertical moving part is formed to be able to move up and down, and the workpiece W can be transferred to the transverse part by descending, and the workpiece is carried into the first drying device 7 by the second transport conveyor 6.

As shown in FIG. 8, the first drying device 7 is provided with a transfer device 74 that transfers the workpiece W through an input lower 2.73 cut out at the front and rear of a vertically long box 71.

Further, the box body 71 is provided with a hot air passage 77 for circulating hot air generated by a burner 76 and a ventilation passage 80 for ventilation by a fan 79.

The burner 76 is attached to a sub-box body 8 that protrudes from the box body 71.
Mounted within 1.81. The burner 76 is also equipped with a guide tube 82 that guides the flame, and the guide tube 82
A duct 83 surrounding the transfer device 74 is located within the box body 71.
It leads to a folded part 85 provided along the folded part 8.
A fan 88 disposed at the opening of a bent portion 87 provided in a part of the duct 83 allows the air to flow back into the duct 83 from the rear end communication portion 89 of the duct 83 . The hot air path 77 is provided above and below the transfer device 74, and a far-infrared plate 90 that generates far-infrared rays by heating is provided on the surface of the folded portion 85 facing the transfer device 74.

As a result, the hot air from the burner 76 circulates through the duct 84 and the folded portion 85, and the workpiece W can be heated and dried by the far infrared rays generated from the far infrared plate 90. A gap is provided between the far-infrared plate 90 and the work W, and the ventilation passage 80 is heated and dried through the exhaust port 91 on the exit side by air supplied from the fan 79 provided on the entrance side, for example. The solvent generated due to this can be removed by ventilation.

Note that the first drying bag 27 is provided with an appropriate sensor S, and the control device 93 controls the combustion amount of the burner 76 and the hot air circulation amount.
By controlling the temperature using the above, the temperature of the plate surface of the workpiece W can be controlled within a range of about 40 to 200°C. In addition, by controlling the speed of the transfer device 74, the residence time of the workpiece W in the furnace can be adjusted to 3 to 30 minutes, and by adjusting this over a wide range, it is possible to adjust the residence time of the workpiece W in the furnace to 3 to 30 minutes. W can be dried by heating. Furthermore, by providing the ventilation passage 80, the evaporated solvent can be immediately discharged, and it can be used for drying the workpiece W to which a coating material is applied, regardless of whether it is inorganic or organic.

The dried workpiece W is cooled by the cooling device 8,
The cooling device 8 uses an appropriate fan or the like to cool the workpiece W while transferring it, and the cooled workpiece W is transferred to a third conveyor 9, and the conveyor 3 coats the workpiece W with the second coating. It is carried out to the apparatus 10.

The third transport conveyor is equipped with direction change devices 21 and 22 having the same configuration as the direction change device 20, and therefore transports the workpiece W by folding it in a U-shape, and has a vertical movement section that includes:
An inspection device 16 having the same configuration as the inspection device 15 is interposed.

As shown in FIGS. 9 to 11, the second coating device 10 has a box 95 equipped with a transfer device 99 for transporting the workpiece W through an inlet 96, 97, and a coating tool using a spray gun 100. 101 is provided. The transfer device 99 is a chain conveyor using a multi-thread chain, and the box body 95
Two chain conveyors 3.104 are used which are divided in the conveying direction in order to form a break 102 inside the conveyor belt. Chain conveyors 103 and 104 have chain wheels 105 and 106 arranged across the break 102, and chain wheels 107 and 10 arranged outside the population 96 and outside the exit 97, respectively.
A chain 98 is wound between the 8 parts. Note that the spray gun 100 is arranged above the discontinuous part 102, and
2, a saucer 10 is placed between chain conveyors 103 and 104.
5 is set.

As shown in FIG. 11, the chain 98 has a projecting piece 111 projecting outward on one side of the chain, and a button-shaped bulging part 112 having a spherical upper surface at the upper end. A support piece 113 having a shape is raised up, and the workpiece W is supported by the bulge part 112. The chain 98 is also provided with a cover 116 having a vertical piece 114 that covers the other side surface and a horizontal piece 115 formed at the upper end and extending in a direction across the chain. The naori bar 116 is
A cover 11 extends from the chain wheels 105, 106 to the inner surfaces of the port 96 and the outlet 97, respectively, and covers the boss portion of the chain wheels 105, 106 as well as the rotating shaft that supports the chain wheels 105, 106.
8 prevents paint from adhering to the chain 98 due to painting.

The spray gun 100 of the coating tool 101 is, for example, an airless spray gun, and is capable of spraying the coating material densely. The coating tool 101 is attached to a suitable reciprocator 119 that reciprocates in a direction across the transfer device 99, and as the coating tool 101 moves back and forth, it uniformly sprays the clear paint onto the workpiece W and coats the colored surface. Coating increases its durability and prevents stains.

Further, the workpiece 11 coated by the second coating device 12 is transferred to a second drying device 1 having substantially the same configuration as the first drying device 7.
After being dried by 2 and taken out onto the fifth conveyor 13 through the cooling device 17, it is taken out to the loading device 14. Note that the loading device 14 has almost the same configuration as the transfer device 3, and operates in the opposite direction to the transfer device 3.
Workpieces W can be stacked on a pallet (P) carried in by the pallet carrying device 24. In this way, the device 1 can be painted, dried and loaded by a series of lines.

〔Effect of the invention〕

As described above, the coating drying device for plate-shaped workpieces of the present invention includes a stock stand, a transfer device, first and second coating devices, a first coating device, and a second coating device.
A second drying device is provided, connected by a conveyor between them, and a cooling device is provided downstream of the first drying device, so that a plate-shaped workpiece can be coated by a series of operations. It helps stabilize quality and improve productivity, and also reduces costs. Further, since the first coating device performs color coating and the second coating device performs clear coating, it is possible to produce workpieces that have improved appearance, durability, and are prevented from staining. Moreover, the first and second drying devices use far infrared rays and perform drying while providing ventilation.
Safe work is possible even when using organic solvents, so it can be used regardless of whether it is inorganic or organic. Furthermore, since a cooling device is used downstream of the first drying device, the second coating can be done in succession at a quick time.
Painting work can be streamlined. In addition, the first and second drying devices can be adjusted within the range of 40 to 200°C and the residence time in the oven can be adjusted to about 3 to 30 minutes, making it possible to paint with a wide range of paints. shall be.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing one embodiment of the device of the present invention, Fig. 2 is a perspective view schematically showing the process of painting and drying by this device, and Fig. 3 is an example of a stock stand and a transfer device. Front view,
Fig. 4 is a perspective view illustrating a suction device used in the transfer device, Fig. 5 is a perspective view illustrating the first coating device, Fig. 6 is a perspective view illustrating the inspection device, and Fig. 7 is its operation. FIG. 8 is a sectional view illustrating the drying device. 2-Stock table, 3-Transfer device, 4-First conveyor, 5-First coating device, 6-Second conveyor, 7-First drying device, 8-Cooling device ,
9--Third conveyor, 10-Second painting device, 11--Fourth conveyor, 12-Second drying device, 13-Fifth conveyor, 14--Loading Device,
15.16-Inspection device, 17-・Cooling device, 20.
21.22-direction changing device, 39-adsorption device, 46-roll coater, 7 low burner, 77--hot air path, 80-ventilation path, 90-
・-Far-infrared plate, 100-・Spray gun. 3. Dealing with Hanyu, the person making the amendment Patent applicant address: 1-1-12 Shinsenri Nishimachi, Toyonaka City
Name Nasinal Housing Industry Co., Ltd. Representative Nishi
Minoru O 4, agent address: 4-2-26 Nishinakajima, Yodoyou-ku, Osaka (1)
In page 20, line 6 of the specification, "This is an illustrative sectional view." is changed to "An illustrative sectional view, FIG. Figure 11 is a perspective view of the transfer device.''that's all

Claims (1)

[Scope of Claims] 1. A stock stand for storing stacked plate-shaped works, a transfer device for sequentially taking out the works stored on the stock stand from the top, and a transfer device for transferring the works taken out by the transfer device. a first conveyor that conveys the work carried in by the first conveyor, a first coating device using a roll coater that applies color coating while conveying the work carried in by the first conveyor, a second conveyor that conveys the work;
During the transfer of the work carried in by the second conveyor, the first
a drying device, a cooling device that receives and transfers the work heated and dried by the first drying device, and cools it; a third conveyor that conveys the work cooled by the cooling device; a second coating device that carries out clear coating while transferring the workpiece carried in by the transfer conveyor; a fourth transfer conveyor that transfers the workpiece coated by the second coating device; a second drying device that heats and dries the work carried in by far infrared rays and with ventilation during the transfer; a fifth conveyor that conveys the work dried by the second drying device; This is a coating drying device for plate-shaped workpieces, which is comprised of a stacking device that stacks up the workpieces transported by the transport conveyor No. 5. 2 The first drying device and the second drying device generate far infrared rays through hot air heating, and raise the plate surface temperature of the workpiece to 40 to 20°C.
While heating and drying the work to a temperature of 0°C,
2. A coating drying apparatus for a plate-like workpiece according to claim 1, wherein the workpiece stays inside for a period of 3 to 30 minutes. 3. The coating drying apparatus for plate-shaped workpieces according to claim 1 or 2, wherein the second transport conveyor is equipped with an inspection device that selects and lifts the workpieces while the workpieces are being transported.