JP3415564B2 - Continuous coating 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 continuous coating apparatus using a powder coating material, and in particular, a colored pattern is formed by supplying the powder coating material to a desired area of a running ceramic building board. The present invention relates to a continuous coating device.

[0002]

In Japanese Patent Laid-Open No. 54-73834, a coating film is uniformly formed on the uneven surface of a substrate, and after the coating film is dried, the substrate is vibrated while being vibrated. By spraying a powder paint of a color different from that of the paint used to form the coating film, burying the powder paint in the recesses of the base material, and then baking and drying it, 2 A method for coloring an uneven surface so as to form a color pattern is described.

In Japanese Patent Laid-Open No. 5-104056, a powder coating having a color different from that of the powder is electrostatically adhered to the entire surface of a workpiece, and the appropriate portion is removed by suction and baked. There is described a pattern forming method by powder coating in which a pattern is formed on the removed portion and the remaining portion by applying treatment so as to form unevenness.

In Japanese Unexamined Patent Publication No. 10-231186, the ultraviolet ray-curable powder coating material is applied to a cement-based inorganic material and then irradiated with ultraviolet rays, or the ultraviolet ray-curable powder coating material is applied to the cement-based inorganic material. A method for producing a surface-coated cementitious inorganic material is described in which a coating film can be obtained by a simple production process by subsequently melting it with hot air or far infrared rays and then curing it by irradiating it with ultraviolet rays. .

[0005]

Problems to be Solved by the Invention JP-A-54-7383
In the method of coloring the uneven surface described in Japanese Patent No. 4 publication, the colored portion of the powder coating is limited to the concave portion of the base material. In the pattern forming method by powder coating described in JP-A-5-104056, a step of adhering the powder coating material to the entire surface of the workpiece and a step of removing the powder coating material in the portion where the pattern is not formed are included. is necessary.

According to the method for producing a surface-coated cementitious inorganic material described in JP-A-10-231186, a colored pattern having an arbitrary shape cannot be obtained. The present invention has been made to solve such a problem, and provides a continuous coating device capable of forming a colored pattern by supplying powder coating to only a desired portion of a running ceramic building board. The purpose is to provide.

[0007]

SUMMARY OF THE INVENTION A continuous coating apparatus according to the present invention is a transporting unit for transporting building boards, and a powder coating can be freely applied to the transported building boards from above in the width direction of the building board. Over the width direction of the building board and the powder coating supply section to be dropped
A powder paint supply control unit that has a plurality of air guns arranged at predetermined intervals and blows air toward the falling powder paint to blow off the powder paint to stop the supply of the powder paint to the building board. Equipped with. In addition, continuous coating according to the present invention
The device consists of a transport unit that transports building boards and the building boards that are transported.
On the other hand, the powder coating is applied from above to the width direction of the building board.
Suitable for powder coating supply unit that drops and powder coating that drops.
To blow out the air and blow the powder coating toward the collection part.
Powder that stops the supply of powder coating to building boards
And a paint supply control unit.

In a state where the air is not blown out, the falling powder coating material is deposited on the surface of the building board. Therefore, by controlling the timing of blowing air, the powder paint can be sprayed and landed on an arbitrary area on the surface of the building board. And
A colored pattern is formed by heating and fixing the powder paint that has been sprayed and landed.

The powder coating material supply control section has a plurality of air guns arranged at a predetermined interval in the width direction of the building board, and controls the blowout timing of air for each air gun to achieve various operations. A colored pattern can be formed. The powder coating material supply control unit can collect and use the unused powder coating material by blowing the powder coating material toward the collection unit.

The powder coating material supply section is provided with a hopper for storing the powder coating material and a vibrating mechanism for vibrating the powder coating material stored in the hopper to prevent the powder coating material from aggregating. At the same time, it promotes the downward movement of the powder coating material. Further, the powder coating material feeding mechanism has a powder feeding roller having a plurality of blades, so that the powder coating material can be continuously dropped from the discharging portion.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Figure 1
2 is a configuration diagram of a continuous coating apparatus according to the present invention, and FIG. 2 is a plan view of a transport section and a powder coating fixing section of the continuous coating apparatus according to the present invention.

The continuous coating apparatus 1 includes a transport unit 2 for transporting a building board S, a transport control unit 3 for controlling the transport start / stop and transport speed, and a powder for continuously free-falling powder coating material. A paint supply unit 4, an air gun group 5 in which a plurality of air guns are arranged at predetermined intervals in the width direction of the building board S, an air source 6 for supplying air to each air gun, and an air jet from each air gun. / Paint paint fall control unit 7 for controlling stop / stop, pattern data storage unit 8, collection unit 9 for collecting powder paint blown off by each air gun, and powder paint supply unit 10
The powder paint fixing unit 11, the fixing control unit 12, the main control unit 13 that controls the entire operation of the continuous coating apparatus, and the plate detection unit 14 that detects the building board S. Air gun group 5
With the air source 6 and the powder coating material fall control unit 7, a powder that blows air toward the falling powder coating material and blows the powder coating composition toward the collection unit to stop the supply of the powder coating material to the building board. It constitutes a body paint supply control unit.

As shown in FIG. 2, the transport unit 2 includes transport guides 2a, 2a, chain conveyors 2b, 2b, a motor for driving the chain conveyors 2b, 2b, a deceleration mechanism and the like (not shown). The transport unit 2 places the back surface of the building board S on the chain conveyors 2b, 2b while guiding the both end portions of the building board S with the transport guides 2a, 2a, and moves the building board S forward (to the right in the drawing). ) To constant speed.

The transfer controller 3 shown in FIG. 1 is a main controller 1.
The start / stop of the operation of the transport unit 2 is controlled based on the transport start / stop command supplied from the main control unit 1.
The transport speed is controlled on the basis of the transport speed command supplied from 3. In the present embodiment, the building board S is 40-60 m /
Transport at a constant speed of about a minute.

In FIG. 2, an imaginary line indicates the powder coating material supply line (the position where the powder coating material is dropped), and the plate detecting unit 14 is located at a position before the powder coating material supply line by a preset distance L. To provide. The plate detection unit 14 is configured by using a photoelectric switch. In this photoelectric switch, a light projector and a light receiver are arranged vertically so as to sandwich the building board S therebetween. The plate detection unit 14 generates a plate detection output based on the fact that the light from the light projector is blocked by the building plate S and the light reception output from the light receiver is stopped. This plate detection output is supplied to the powder coating material falling control unit 7.

A powder paint fixing section 11 is provided on the downstream side of the powder paint supply line. FIG. 3 is a schematic structural diagram of the powder paint fixing section. The powder paint fixing unit 11 includes a plurality of far infrared panel heaters H1 to H4 (here, four sets) for radiantly heating the paint.
In addition, the distance between the far infrared panel heaters H1 to H4 and the building board S can be adjusted by a retracting mechanism (not shown). Further, the powder paint fixing unit 11 includes two surface thermometers T
1, T2. The first surface thermometer T1 detects the building board surface temperature immediately after the heating is started, and the second surface thermometer T2 detects the building board surface temperature immediately after the heating is finished. The temperature data T1D and T2D measured by the surface thermometers T1 and T2 are supplied to the fixing controller 12.

The fixing controller 12 controls the temperature data T1D,
T2D is compared with a preset temperature, and the current values of the far infrared panel heaters H1 to H4 are adjusted, and the distances between the far infrared panel heaters H1 to H4 and the building board S are adjusted via a retracting mechanism. Thus, the heating temperature of the building board S is controlled.

4 and 5 are structural views of the powder coating material supply section. FIG. 4 is a view seen from the front direction, and FIG. 5 is a view seen from the side direction. These figures show the inside of the hopper as seen through. The powder coating material supply unit 4 includes a hopper 41.
And a vibrating mechanism 42 for vibrating the powder coating material stored in the hopper 41, a powder coating material feeding mechanism 43, and a discharging section 44.

From the powder coating material replenishing section 10, the powder coating material is replenished into the hopper 41 by the replenishing conveyor 45 at any time. Here, the supply conveyor 45 is housed in the supply pipe 46. This prevents moisture and foreign matter from entering the powder paint supply line and the hopper 41 to which the powder paint is supplied. The shape of the main part of the hopper 41 is similar to a paper container such as french fries in a hamburger shop.

The vibration mechanism 42 includes a holding rod 42c connected to a rotary shaft of a motor 42a via a universal joint 42b.
It is composed of a vibrating body 42d fixed to the tip of the holding rod 42c. The center of gravity of the vibrating body 42d is offset from the extension of the holding rod 42c. The motor 42a is fixed to the canopy 41a of the hopper 41, and the vibrating body 42d is suspended via a holding rod 42c. When the motor 42a is rotated to rotationally drive the vibrating body 42d, the vibrating body 42d vibrates. In the present embodiment, the three sets of vibrating mechanisms 42 are arranged at predetermined intervals, and the suspension positions of the vibrating bodies 42d are set to the same level. The vibrating action of each vibrating body 42d prevents agglomeration of the powder coating material stored in the hopper 41 and promotes the downward movement of the powder coating material. The lower end surface of the hopper 41 is formed into a narrow elliptical plane or a rectangular plane into which the slit-shaped opening 4 is formed.
1b (see FIG. 5) is formed, and the ejection portion 44 is connected.

The powder coating material feeding mechanism 43 is provided in the hopper 4.
Powder coating material feeding roller 4 provided in the vicinity of the lower end surface of 1.
3a and a pulse motor (stepping motor) 43b provided outside the hopper 41. The powder coating material feeding roller 43a includes a plurality of blades 43c. These blades 43c are formed of a flexible material such as rubber. As shown in FIG. 5, the tips of the blades 43c are in contact with the bottom inclined surface 41c of the hopper 41. As a result, the amount of powder coating material secured between the adjacent blades 43c, 43c and the bottom inclined surface 41c is increased by the slit-shaped opening 4 as the powder coating material feeding roller 43a rotates.
1b, and is dropped via the discharge part 44.

FIG. 6 is a structural diagram of the discharge part. Discharge part 44
Has a plurality of guide pipes 44a arranged in a row and fixed. Thereby, a plurality of linear flows of the powder coating material are formed across the width of the building board S. For example, the outer diameter D is 4
mm, the inner diameter d is 3 mm, and the length (height) H is 10 mm. As a result, a drop flow of the powder coating material is formed with a gap of 1 mm between each. The diameter of the falling stream is 3 mm. Guide pipe 4
The length (height) H of 4a may be any dimension that can regulate the flow of the powder coating material flowing in from the slit-shaped opening 41b in the vertical direction. The discharge unit 44 may be configured by arranging rectangular pipe lines in a line.

FIG. 7 is a structural diagram of the air gun group and the collecting portion, and FIG. 8 is an explanatory diagram of the collecting operation of the powder coating material that falls. In the present embodiment, the drop height of the powder coating material (the distance from the lower end of the discharge part 44 to the surface of the building board S) is about 10 mm. The air gun group 5 and the collection unit 9 are located below the discharge unit 44 (for example, 5 mm below) so as to sandwich the falling flow of the powder coating material.
The recovery ports 9a of 9 are arranged so as to face each other. The collecting unit 9 sucks the powder paint accumulated in the tip hood section having the collecting port 9a, the trap section (reservoir section) connected to the hood section, the tip hood section and the trap section (reservoir section), and opens the duct 9c. Blower 9 for air-conveying to powder paint replenishing section 10 via
b.

As shown in FIG. 8, the air gun group 5 has the same number of air guns 5a as the guide pipes 44a.
4a are arranged in a line at the same intervals. Each air gun 5
The muzzle of a is directed to the recovery port 9a of the recovery unit 9. The opening / closing of the air valve (open / close valve) of each air gun 5a is controlled by the powder coating material fall control unit 7, and the compressed air from the air source 6 (see FIG. 1) is supplied or shut off. The guide pipe 44a is attached to the tip of the engun 5a so that the compressed air flow having a width slightly smaller than the outflow width (falling width) of the powder paint flowing out from the lower end of the guide pipe 44a collides with the side surface of the falling powder paint. Select an air nozzle. The thickness of the partition wall of the adjacent guide pipes 44a is equal to that of the adjacent air guns 5.
The gap serves to prevent interference between the compressed air flows ejected from a.

By individually controlling the jetting / stopping of air for each air gun 5a, it is possible to select the spraying (supply) / stopping supply of the powder coating material to the building board S for each flow of the linear powder coating material. . That is, when the powder coating material is sprayed, the air ejection from the air gun 5a is stopped. As a result, the powder coating material dropped from the guide pipe 44a is scattered on the surface of the building board S. When it is not necessary to spray the powder paint, air is ejected from the air gun 5a. As a result, the powder coating material dropped from the guide pipe 44a is blown off toward the recovery port 9a by the compressed air flow. Therefore, the powder coating material is not supplied to the building board S.

The collecting section 9 receives the powder coating material at the tip hood section having the collecting port 9a and collects it in the rear trap section.
The recovered powder coating material is blown by the blower 9b into the duct 9c.
It is returned to the powder coating material replenishing section 10 via. In order to prevent the powder paint from falling due to the suction force associated with the operation of the blower 9b, the operation of the blower 9b is stopped while the powder paint is being sprayed on the building board S. The blower 9b is operated during the transport gap period (period during which the powder coating material is not sprayed) until the building board S is transported.

By controlling the supply / stop of supply of the powder coating material in synchronism with the conveying position of the building board S, it is possible to spray the powder coating material on any area on the surface of the building board. Then, the sprayed powder coating material is heated and fixed by the powder coating material fixing section 11, so that the building board S colored with the powder coating material can be obtained.

FIG. 9 is an explanatory diagram of a spray area of the powder coating material. The surface of the building board S is virtually divided into a number of rectangular areas. One line in the horizontal direction is a scatter line which is handled by one guide pipe 44a. The rectangular area is divided based on the traveling (conveying) distance of the building board S per unit time.
The powder paint dispersion area is set slightly inside the entire surface of the building board S.

It should be noted that although the powder coating material is not sprayed on the partition wall portion between the adjacent guide pipes, in reality, the powder powder sprayed by the vibration accompanying the traveling (conveyance) of the building board S or the like. Since the body paint spreads around, it is possible to form a continuous colored pattern in the width direction.

FIG. 10 is a diagram showing the spread of the dispersed powder paint and the spread of the coloring range after fixing. Figure 10
(A) shows the case where one kind of powder paint is sprayed, and FIG.
0 (b) shows the case where a mixture of two types of powder coating materials was sprayed. In addition, the rectangular area shown by the imaginary line in the drawing is a dispersion area based on the opening diameter of the guide pipe.

As shown in FIG. 10 (a), the powder coating material which has been sprayed onto the surface of the building board S by dropping spreads to the periphery due to the adjustment of the spraying amount and the vibration accompanying the transportation. Then, even when the powder coating material is melted by the heating in the powder coating material fixing section 11, the powder coating material diffuses to the periphery.

As shown in FIG. 10 (b), by using a mixture of two or more kinds of powder paints having different hues, it is possible to develop a unique hue in which the respective colors fuse with each other after being heated. it can. FIG. 11 is an explanatory diagram of the powder paint supply operation timing and the air ejection timing of the air gun. Drop time t from the slit-shaped opening P to the drop position Q (the average height position of the powder paint-spraying surface on the surface of the building board placed on the chain conveyor) from the slit-shaped opening P to the building board surface immediately below. Is a clock pulse count, for example, m pulse counts, the powder paint delivery roller provided at the lower end of the hopper 41 so that the powder paint will land when the handle start tip on the building board surface reaches the drop position Q. 43
Control the start of rotation of a.

In this way, the powder coating material feeding roller 43
By controlling the start / stop of rotation of a, the outflow of the powder coating material from the hopper 41 and its stop are controlled because the powder coating material flows out from a narrow slit width, so that the opening / closing of that portion is performed. If a gate is provided, there is a risk that the powder coating material will become clogged in the gap between the opening and closing gates.
This is to avoid such a risk.

In concrete operation, the powder paint feed roller 43a is started to rotate every time one of the building boards conveyed intermittently arrives, and after the building board passes, the next The pulse motor 43b is controlled so that the rotation of the powder coating material feeding roller 43a is stopped until the building board arrives.

Further, the control of the powder paint spraying on one building board is performed by the air gun 5a, but in this case as well, it corresponds to the fall time from the cut position U to the fall position Q by the air gun 5a. Clock u
The pulse amount is calculated and the air ejection / stop timing of the air gun 5a is controlled.

FIG. 12 is an explanatory diagram of pattern generation. Here, as shown in FIG. 12A, it is assumed that a quadrangle pattern pattern is formed in the area having line numbers (i) 1 to 10 and column numbers (j) 1 to 6. The part hatched in a grid pattern is a part where the entire rectangular area is used. The ratio of the pattern area occupied in the rectangular area is calculated for all the rectangular areas including the boundary line of the design. In this embodiment,
Ratio of handle area is less than 1/3, more than 1/3 and less than 2/3, 2
/ 3 or more is divided into three. Those having a pattern area ratio of less than ⅓ (portion indicated by reference character x in FIG. 12A) are excluded from the powder coating application area.

A rectangular area serving as a pattern start tip and having a pattern area ratio of 2/3 or more (portion indicated by a black circle) is
The powder paint supply timing is slightly delayed from the reference closing timing of the air opening / closing valve of the air gun 5a (first closing timing). Here, the reference closing timing is the supply start timing when the powder coating material is supplied over the entire rectangular area. As described above, since the powder paint is supplied to the building board S by stopping the air injection from the air gun 5a, the timing of closing the air opening / closing valve of the air gun 5a is controlled to be slightly delayed.

In the rectangular area which becomes the pattern start tip and the pattern area ratio is 1/3 or more and less than 2/3 (portion indicated by black triangle mark), the powder coating material supply timing is set to the first closing. Delay a little more than the timing (second closing timing). For the rectangular area that becomes the rear end of the handle and the ratio of the handle area is 2/3 or more (the portion indicated by the white circle), the powder paint supply stop timing is the reference open timing of the air on / off valve of the air gun 5a. A little earlier than (first opening timing). Here, the reference opening timing is a supply stop timing when the powder coating material is supplied over the entire rectangular area. As described above, since the supply of the powder coating material to the building board S is stopped by starting the air injection from the air gun 5a, the timing of opening the air opening / closing valve of the air gun 5a is controlled to be slightly advanced.

In the rectangular area which is the tip end of the pattern and the pattern area ratio is 1/3 or more and less than 2/3 (the part indicated by the white triangle), the powder coating material supply timing is set to the first opening. A little earlier than the timing (second opening timing). In this way, by shifting the supply start timing and the supply stop timing of the powder coating material, it is possible to adjust the spraying start position and the spraying end position of the powder coating material within the rectangular region.

FIG. 12 (b) is a diagram of the powder paint spraying and landing. In the portion hatched in a grid pattern, the powder coating material is sprayed over the entire rectangular area. In the area hatched with horizontal lines, the first paint closing timing or the first opening timing is used to set the spray range of the powder coating material to the entire rectangular area.
It is about / 3. In the area hatched with vertical lines, the application range of the powder coating material is set to about 1/3 of the entire rectangular area by using the second closing timing or the second opening timing. When the powder coating material thus dispersed is heated and fixed, as shown in FIG. 12 (c), the powder coating material melts and a colored pattern slightly spreading around the periphery is obtained.

FIG. 13 is a timing chart showing an example of the opening / closing timing of the air gun. 13A shows a rectangular area, and FIG. 13B shows an opening / closing operation of the air opening / closing valve of the air gun. Here, the opening / closing timing of the air opening / closing valve is shown for the line with the line number i = 4 shown in FIG. In the line with line number i = 4 shown in FIG. 12A, the first rectangular area (4, 1) is a non-colored area. The next rectangular area (4, 2) is a non-colored area because the proportion of the pattern pattern is less than 1/3. The next rectangular area (4, 3) is the starting area of the pattern pattern, and since the ratio of the pattern pattern is 2/3 or more, the air opening / closing valve is closed at the first closing timing, whereby the building board position Q Then, the supply of the powder coating material is started. The next rectangular area (4, 4) has a pattern in its entire area, so that the supply of paint is continued. The next area (4, 5) is the end area of the pattern pattern, and since the ratio of the pattern pattern is 2/3 or more, the air opening / closing valve is opened at the first opening timing, thereby supplying the powder coating material. Is stopped.

In this way, the opening / closing control data of the air opening / closing valve is created for all the coloring lines, and the created opening / closing control data of the air opening / closing valve is associated with the coloring line and stored in the pattern data storage unit 8 shown in FIG. Store. In the present embodiment, an example in which a virtual rectangular area is set to control the powder paint dispersion range has been described, but the powder paint supply start timing and stop timing are set for each coloring line. You may do it.

FIG. 14 is a flow chart showing the operation of the continuous coating apparatus according to the present invention. When the power supply of the continuous coating apparatus 1 is turned on in step S1, the entire apparatus is initialized in step S2, and the initial operating state is confirmed by each control unit. For example, the transport control unit 3 checks whether the operation of the chain conveyor is normal, and reports the result to the main control unit 13. The plate detector 14 checks whether the light from the light projector can be detected by the light receiver,
The result is reported to the main control unit 13. The powder coating material fall control unit 7 checks whether the pressure of the compressed air is normal, whether the air gun group 5 can operate normally, and reports the results to the main control unit 13. Fixing control unit 12
Checks whether the operation of the far infrared panel heater is normal or whether temperature data is obtained, and reports the results to the main control unit 13. When any abnormality is reported from each control unit, the main control unit 13 displays the content of the abnormality on a display device or the like (not shown) and issues an alarm from an alarm device or the like (not shown) (step S3).

When the operation is started by an operation unit (not shown) or the like (step S4), a preparation process (standby process) for supplying the powder coating material is performed in step S5. In this standby processing, the powder paint fall control unit 7 reads the control pattern of the air gun, and the powder paint supply unit 10 controls the supply of the powder paint to the powder paint supply unit 4. When the operation stop operation is performed by the operation unit (not shown) or the like (step S6), the main control unit 13 performs the process necessary for the operation stop and stops the operation (step S7).

When the board detecting section 14 detects that the building board S has been conveyed (step S8), the powder coating material falling control section 7 places the tip of the building board S at the powder coating material supplying position. It measures the time until just before reaching (step S
9, S10), and when that time has passed, the hopper 41
The pulse motor 43b for driving the powder coating material feeding roller 43a therein is operated to drop the powder coating material from the discharging portion 44 (step S11). As a result, the supply (falling) of the powder coating material is started.

The powder coating material drop control unit 7 controls the jetting / stopping of air from each air gun 5a at the same time when the supply (dropping) of the powder coating material is started based on the pattern data (opening / closing control data of the air opening / closing valve). (Step S12). As a result, the powder coating material is deposited on the place where the colored pattern is formed.

When the open / close control of the air open / close valve based on the pattern data is completed (step S13), the powder coating material falling control unit 7 stops the operation of the pulse motor 43b for driving the powder coating material feeding roller 43a, The supply of the powder coating material is stopped and the air ejection from each air gun 5a is stopped (step S14). Next, the powder coating material falling control unit 7 operates the blower 9b of the collecting unit 9. As a result, the unused powder coating material is collected in the powder coating material supply unit 10 (step S15).

The building board S on which the powder coating material has been dispersed is conveyed to the powder coating material fixing section 11, and the powder coating material fixing section 11 heats and fixes the powder coating material. 15 and 16 are views showing a representative example of a building board manufactured by the continuous coating apparatus according to the present invention. FIG. 15A shows a building board in which a convex portion is formed on a flat surface and a groove portion (concave portion) is formed on an uneven surface, and a colored pattern is given to the convex flat surface. Figure 1
5 (b) is a building board in which the convex portions are formed by a plurality of steep slopes and the concave portions are formed in a flat surface, and the concave flat surface is colored. FIG. 16 shows colored patterns on convex portions having various shapes. Although a building board having convex and concave portions on the board surface is illustrated here, the continuous coating apparatus according to the present invention can pattern a building board having a flat surface with powder coating material. Further, although the example in which the pattern is scattered is shown, the entire area of the convex portion or the concave portion may be colored.

[0049]

As described above, since the continuous coating apparatus according to the present invention has a structure in which the powder coating material is dropped on the surface of the building board, the powder coating material is sprayed on the building board having irregularities on the surface. it can. Since the supply of the powder coating material to the building board is stopped by blowing off the falling powder coating material with air, it is possible to spray the powder coating material only in an arbitrary area by controlling the timing of blowing air. Thereby, a desired colored pattern can be formed. Powder coating
The material supply control unit has a predetermined interval across the width of the building board.
By having multiple air guns installed, each air gun
By controlling the timing of air blowout for each
Can be formed. The powder paint supply control unit is a powder paint
Was not used because it was blown away toward the collection section.
The powder coating material can be collected and used.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a continuous coating apparatus according to the present invention.

FIG. 2 is a plan view of a conveying section and a powder coating fixing section of the continuous coating device according to the present invention.

FIG. 3 is a schematic structural diagram of a powder paint fixing unit.

FIG. 4 is a structural view (front view) of a powder coating material supply section.

FIG. 5 is a structural diagram (side view) of a powder coating material supply unit.

FIG. 6 is a structural diagram of a discharge unit of a powder coating material supply unit.

FIG. 7 is a structural diagram of an air gun group and a recovery unit.

FIG. 8 is an explanatory diagram of an operation of collecting falling powder coating material.

FIG. 9 is an explanatory diagram of a spray area of the powder coating material.

FIG. 10 is a diagram showing the spread of the dispersed powder coating material and the spread of the coloring range after fixing.

FIG. 11 is an explanatory diagram of a powder coating material supply operation timing and an air gun air ejection timing.

FIG. 12 is an explanatory diagram of pattern generation.

FIG. 13 is a timing chart showing an example of opening / closing timing of the air gun.

FIG. 14 is a flowchart showing the operation of the continuous coating device according to the present invention.

FIG. 15 is a view showing a typical example of a building board manufactured by the continuous coating device according to the present invention.

FIG. 16 is a view showing another typical example of a building board manufactured by the continuous coating device according to the present invention.

[Explanation of symbols]

1 Continuous coating equipment 2 transport section 3 Transport control unit 4 Powder coating supply section 5 Air gun group 5a air gun 6 Air source 7 Powder paint fall control section 8 Pattern data storage 9 Collection Department 10 Powder coating supply section 11 Powder coating fixing unit 12 Fixing controller 13 Main control unit 14 Plate detector 41 hopper 41b slit-shaped opening 42 Vibration mechanism 43 Powder paint feeding mechanism 43a Powder paint feeding roller 43b pulse motor 43c feather 44 Discharge part 44a Guide pipe

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification Code FI B05D 5/06 101 B05D 5/06 101B C04B 41/60 C04B 41/60

Claims (5)

(57) [Claims] 1. A conveying section for conveying a building board, a powder coating supply section for allowing the powder coating to fall freely from above with respect to the conveyed building board in the width direction of the building board, and a width of the building board. direction
Has a plurality of air guns arranged at predetermined intervals over the air and blows air toward the falling powder paint to blow off the powder paint to stop the supply of the powder paint to the building board. A continuous coating device comprising a powder coating material supply control unit. 2. A conveying section for conveying a building board, a powder coating supply section for allowing powder coating to fall freely from above the conveyed building board in the width direction of the building board, and falling powder. Continuously characterized by including a powder paint supply control unit for stopping the supply of the powder paint to the building board by blowing air toward the paint and blowing the powder paint toward the collecting unit. Coating equipment. Wherein said powder coating material supply unit includes a hopper for reserving the powder coating, according to claim 1 or, characterized in that it comprises a vibration mechanism for vibrating the reservoir to powder coating in the hopper 2. The continuous coating device described in 2 . Wherein said powder coating material supply unit, the continuous coating apparatus of claim 1, wherein further comprising a powder coating delivery mechanism for feeding the powder coating on the discharge portion. 5. The continuous coating apparatus according to claim 4, wherein the powder coating material feeding mechanism has a powder feeding roller having a plurality of blades.