JPH06320096A - Coating method and coating equipment for coatings for cutting ultraviolet rays, etc. - Google Patents

Abstract

(57) [Summary] [Purpose] By recycling paint in a circulating manner, the material cost is reduced, and replenishment work is omitted to improve the efficiency of coating work. Furthermore, it aims at providing the coating machine which can respond appropriately to the area and height of a large glass. [Structure] The paint 30 is sucked from a tank 3 by a coating pump 8, the sucked paint 30 is flow-coated on a surface 25 to be coated from a coating nozzle 28, and the paint 30 flowing down from the surface 25 to be coated is connected to a recovery pump 9. The suction means 37 sucks and collects it into the tank 3.
Cut out UV rays. Further, as an apparatus used in the method, a tank 3 for storing the coating material 30, a coating pump 8 for sucking the coating material 30 from the tank 3, a nozzle 28 for flow coating the sucked coating material 30 on a surface 25 to be coated, Paint 30 flowing down from the coating surface 25
Is integrally provided with a suction means 37 for sucking the paint, and a collection pump 9 connected to the suction means 37 for sucking and collecting the paint 30 into the tank 3. The output of the coating pump 8 and the collection pump 9 is adjusted by an inverter 39. It is possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a coating method and coating apparatus for coating a coating for preventing the transmission of ultraviolet rays.

[0002]

2. Description of the Related Art Conventionally, in order to improve cooling efficiency in air conditioning of ordinary households and buildings, or to prevent fading of products in display cases, paints that block ultraviolet rays and near infrared rays are applied to ordinary households and buildings. The method of applying to the glass window of was known. With this method, the surface of transparent glass or plastic is cleaned, masking tape is applied, and a curing agent is compounded using a spray can, a bottle neck washing bottle, a tube protruding from a plastic container or a coating machine kit. The paint was applied within a short time and completely dried by natural drying. In this case, the work using the tube attached to the bottle neck washing bottle or the plastic container is a manual work, and the paint is poured from the upper side of the glass surface while moving the washing bottle and the tube to the left and right to the lower side of the glass surface. The run-off paint was received and collected and discarded by the dam roll etc. that was installed in advance. Further, in the coating machine, the paint is sucked up from the tank by the pump, the paint is discharged from the nozzle moving left and right on the upper side of the glass, and the paint flowing down to the lower side of the glass is collected and discarded by the same method as described above.

[0003]

However, in the above-mentioned prior art, since the paint used once is discarded as it is, the consumption of the paint is increased and the cost is increased accordingly. Moreover, the paint replenishment work is often required, and the original efficiency of the coating work is reduced. These problems were particularly noticeable in coating large area large glass. Furthermore, when using a spray can, a crane neck washing bottle, or a squeezing tube, it is a manual work, and a relatively small area to be coated is sufficient, but for large glass, the operator is forced to do a great deal of labor and work. Was inadequate because of the inefficiency. Further, for coating at a high position, it is necessary to hold a scaffold and place a coating device on the scaffold to work, which entails a great deal of labor and danger.

[0004]

In order to solve the above problems, the present invention draws the paint 30 from the tank 3 by the application pump 8 and applies the drawn paint 30 to the application nozzle 2
Flow coating from 8 to the coated surface 25,
The first feature is that the paint 30 flowing down from the coated surface 25 is sucked and collected into the tank 3 by the suction means 37 connected to the collection pump 9. Further, a tank 3 for storing the coating material 30, a coating pump 8 for sucking the coating material 30 from the tank 3, a nozzle 28 for flow coating the suctioned coating material 30 on the surface 25 to be coated, and a coating material 30 flowing down from the surface 25 to be coated. The second characteristic is that the suction means 37 for sucking and the recovery pump 9 connected to the suction means 37 for sucking and recovering the paint 30 into the tank 3 are equipped. Further, the third feature is that an inverter 39 for adjusting and controlling the drive of the coating pump 8 and the recovery pump 9 is provided. In addition, a fourth feature is that the coating pump 8 and the recovery pump 9 share a single drive motor 7.

[0005]

The coating 30 is sucked by the coating pump 8 from the tank 3, and the coating 30 is flown from the nozzle 28 located above the surface 25 to be coated. The suction means 3 connected to the recovery pump 9 for the paint 30 that has flowed down to the lower side of the coated surface 25.
If the ink is sucked and collected into the tank in step 7, the paint 30 can be circulated and used, and both the economical efficiency and the work efficiency are improved. Further, if the drive motor 7 is provided with an inverter 39, the outputs of the coating pump 8 and the recovery pump 9 can be adjusted by operating the inverter 39.
Can deal with 5. Further, if each apparatus of the coating apparatus is provided in the apparatus main body and the application pump 8 and the recovery pump 9 are shared by the single drive motor 7, the weight of the apparatus as a whole and the size thereof can be reduced.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. The columns 1 and 2 are erected on the base 1 side by side.
A tank 3 is detachably attached to the upper ends of the pillars by screwing a boss 4 fixed to the bottom plate of the tank 3 onto the pillars 2 and 2. A drive motor 7 is installed substantially in the center of the base 1, and a coating pump 8 and a recovery pump 9 are provided on both left and right sides of the drive motor 7. The pulley 12 supported by the drive shaft of the drive motor 7 has two transmission belts 1
3, 14 are wound around and one transmission belt 13
Is attached to the pulley 17 of the coating pump 8 and the other transmission belt 1
4 is wound around the pulley 18 of the recovery pump 9.

A suction port 19 is opened at approximately the center of the bottom plate of the tank 3, and a suction pipe 20 extending from the coating pump 8 is connected to the suction port 19. Further, a supply pipe 22 is connected to the coating pump 8 on the side opposite to the suction pipe 20 connection portion, and the supply pipe 22 extends upward and is connected to a coating hose 24 via a joint 23. The coating hose 24 extends to the glass surface 25 side, and a joint 27 is attached to the tip end thereof, and the joint 27 has a flat opening having a spatula shape for letting out the coating material 30 sent from the coating pump 8. The formed nozzle 28 is detachably attached. A valve lever 26 is attached to the joint 27, and the outflow amount of the paint 30 can be arbitrarily adjusted.

A recovery port 29 is opened on the upper side of the peripheral wall of the tank 3, and a recovery pipe 32 is connected to the recovery port 29.
The recovery pipe 32 extends downward and is connected to the recovery pump 9, and a suction pipe 33 is connected to the recovery pump 9 on the side opposite to the connection part of the recovery pipe 32. The suction pipe 33 extends up to the vicinity of the coating pump 8 and bends upward, and a bifurcated joint 34
It is divided into two parts via. Suction tube 3 split in two
A suction hose 34 is connected to one side of the suction hose 3 through a joint 36, and a suction tool 37 including a suction nozzle is attached to the tip of the suction hose 34. The application hose 24 and the suction hose 34 can both be extendedly connected through a joint.

The base 1 has a motor 12 and pumps 8 and 9
A case 38 that covers the drive part of is detachably provided, and an inverter 39 is installed on the right side of the upper surface of the case 38. The inverter 39 is connected to a motor terminal box 42 provided in the vicinity of the drive motor 7, and the output (rotation speed) of the drive motor 7 by operating the inverter 39.
Adjustment is possible. 70 and 70 shown in FIGS.
Reference numeral 73 is an operation switch and an adjustment operation unit of the motor 12 and the inverter 39, 72 is a power supply insertion cord, and 71 is an outlet.

A relief port 43 is opened at a position side by side with the recovery port 29 on the upper side of the peripheral wall of the tank 3, and a relief pipe 44 is connected to the relief port 43. The relief pipe 44 extends downward and is connected to the supply pipe 22 at the end thereof, and serves as a pressure relief when the supply pressure by the pump 8 becomes a problem.

A partition plate 47 is provided in the vicinity of the recovery port 29 in the tank 3 to form a recovery chamber 48. In the recovery chamber 48, the recovery paint 30 flowing down from the recovery port 29 is provided.
A filter 49 for filtering is attached. In addition to the above, on the upper wall of the tank 3, the suction tool 3 at the tip of the nozzle 28 and the hose 34 attached to the tip of the coating hose 24 is provided.
Holes 52 and 53 for inserting and holding 7 are formed. Further, 54 is an opening / closing lid, and 55 is its knob portion. Further, wheels 56 are provided on the lower side of the base 1, and gate-shaped handles 57 and 58 for pushing the hand are provided on both front and rear ends of the base 1.

Next, a method of performing flow coating treatment on the glass surface 25 using the coating apparatus having the above structure will be described. The coating material 30 is contained in the tank 3 and each of the coating hose 24 and the suction hose 34. The tip side is inserted through the holes 52 and 53, and the motor 7 is operated to rotate and stir the paint 30 in the tank 3 to adjust the viscosity.

In this case, the coating material 30 used must be one which does not dry for a predetermined time so that it can be recovered and reused. In this embodiment, a one-component coating material containing alkyd resin as a solid content is used. is doing. The content ratio of the components of the paint 30 is 38.5% for the modified alkyd resin and 5.
4%, aliphatic hydrocarbon solvent is 56.1%, and the content of components of the auxiliary agent is an ultraviolet absorber, a stabilizer, a desiccant, an anti-skin agent, a leveling agent, and an antifoaming agent. UV absorbers make up 22% of the auxiliaries. In this respect, all of the coating materials that have been used in the past are two-part liquids that have been prepared by blending a curing agent, and because they have quick-drying properties, the coating agent that remains is gelled, which makes recovery and reuse difficult. Was not suitable.

Then, prior to the application of the coating material 30, as a pretreatment, the shape of the putty or the like on the peripheral edge of the glass surface is trimmed, the glass surface 25 is wiped, and dust and dirt adhering to it are removed by a special cutter. Furthermore, dissolve powdered cerium in water,
While coating the entire glass surface 25 with a sponge or the like, a portion where silicon or other impurities are attached is found and the silicon or the like is removed by polishing. By the way, since the water on the glass surface does not adhere to the silicon adhesion part, it can be found just by applying the cerium solution. This is because if silicon or other impurities adhere to the glass surface 25, good finish becomes extremely difficult. Then, before the cerium liquid dries,
Blow off from the glass surface to finish the base treatment. When the pretreatment of the glass surface 25 is completed, the dam roll 63 is temporarily installed at the lower edge of the glass surface 25 and the paint 30 flowing down.
As a saucer.

As shown in FIG. 5, at the time of coating operation, the nozzle 28 and the suction means 37 are pulled out from the tank 3, the drive motor 7 is operated again, and the coating pump 8 sucks the coating material 30 to suck the coating material 30. Send to the side. At this time, a filter 64 may be attached inside the joint 23. The nozzle 28 at the tip of the coating hose 24 is moved downward while moving left and right on the upper end side of the glass surface 25 to sequentially flow out the coating material 30 and coat with the coating material 30 that flows down. As described above, the nozzle 28 is formed with a flat discharge port so that the paint 30 can spread sufficiently, and can be replaced so that the size of the spatula can be selected. When the paint 30 is discharged, the output of the drive motor 7 is adjusted by operating the inverter 39 according to the area of the glass and the height of the upper end portion. Further, when applying large glass, it is also possible to use the two application hoses 24 by utilizing the preliminary mounting portion 23a of the joint 23.

Dam roll 63 flowing down the glass surface 25
Suction and collect the paint 30 accumulated in the
Inject into the tank 3 through the opening of the tank 3. In this case, for the coating of the large glass, two suction hoses 34 can be used by utilizing the preliminary joint 35 of the suction tube as described above.

Incorrect operation of the inverter 39 Drive motor 7
When the output of is too large, the relief function works, and the paint 30 is drained from the supply pipe 22 and collected in the tank 3 through the relief pipe 44. Paint 3 collected in tank 3
0 is filtered by the filter 49 and reused.

When the one-component coating material 30 shown in this embodiment is used for coating by the above method, the conventional acrylic resin is 5 to 10%, and the silicone is 0.01 to 0.05.
%, Toluene (solvent) 95%, ultraviolet absorber 0.9%,
Table 1 shows the results of a comparative experiment of the ultraviolet ray cut rate of each glass surface 25 when coated with a two-component coating material containing a hardening agent of 3% or the like. This experiment was carried out on a window glass of an automobile, and the one-component paint 30 and the two-component paint were coated on the thinnest glass surface 25 upper part and the thickest glass surface 25 lower part, respectively, and spectroscopically analyzed. It can be seen that the one-component coating material 30 has a wider ultraviolet ray absorption region in any of the portions, and the overall ultraviolet ray blocking rate is excellent.

Table 1

Table 2 shows a comparison of the temperature conditions in the room due to the infrared ray cut using the one-component paint 30 between the case of the conventional two-component paint and the case of no coating treatment as described above. . According to the table, it can be seen that the temperature in the room partitioned by the coated glass is clearly low in both the first and second rooms.

Table 2

Further, when the glass surface 25 is coated with the one-component coating material 30 of the present invention, the respective transmittances of ultraviolet rays, visible rays and near infrared rays of the glass are shown in the graph of FIG. In this case, the thickness of the glass plate is 2 mm and the dry film thickness of the coating film is 28 to 32 μm. In this example, it can be seen that the transmittance in the ultraviolet region is 0%.

Table 3

As is clear from Tables 1 and 2,
Since the glass coated with the one-component paint 30 always blocks a certain amount of infrared rays reliably, the cooling effect is greatly improved, and ultraviolet rays block 95% to 100% of the infrared rays. Fading of leather products is prevented.

[0025]

According to the method of the present invention configured as described above, the paint used once is recycled as it is without being discarded as it is, so that the material cost of the paint is reduced and the economical efficiency is improved. In addition, when coating a large glass or the like, the coating work is relieved from complicated paint replenishment work, and the coating work efficiency is improved. Further, since the drive motor is provided with an inverter, the output of the drive motor can be adjusted according to the area and height of the glass. For this reason, it is possible to deal with various sizes of coated surfaces, and even when the paint is poured from the top of a large glass, scaffolding is used as before,
It is no longer necessary to place a coating machine on it. Further, since the drive motor is shared by the coating pump and the recovery pump, the overall weight can be reduced and the size can be reduced, so that no space is required for working or storing.

[Brief description of drawings]

FIG. 1 is an overall front view showing an embodiment of an apparatus according to the present invention.

FIG. 2 is a left side view showing an embodiment of the device according to the present invention.

FIG. 3 is a right side view showing an embodiment of the device according to the present invention.

FIG. 4 is a plan view showing an embodiment of the device according to the present invention.

FIG. 5 is a side view showing a coating operation.

FIG. 6 is a graph showing the light transmittance of the coated glass according to the present invention.

[Explanation of symbols]

 3 Tank 7 Motor 8 Application Pump 9 Recovery Pump 25 Glass Surface 28 Application Nozzle 30 Paint 37 Suction Means 39 Inverter

[Table 1]

[Table 2]

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[Procedure amendment]

[Submission date] June 17, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Delete

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B05D 7/24 301 Z 8720-4D

Claims (4)

[Claims] 1. A coating material (30) is sucked from a tank (3) by a coating pump (8), and the sucked coating material (30) is flow-coated from a coating nozzle (28) onto a surface (25) to be coated, A coating method of a coating material for cutting ultraviolet rays and the like, in which the paint (30) flowing down from the coating surface (25) is sucked and collected into the tank (3) by a suction means (37) connected to a collection pump (9). 2. A tank (3) for storing a paint (30).
A coating pump (8) for sucking the paint (30) from the tank (3), and a nozzle (28) for flow-coating the sucked paint (30) on the surface (25) to be coated.
And the paint (3
0) and a suction means (37), and a suction means (37)
An apparatus for coating paint for cutting off ultraviolet rays and the like, which is equipped with a recovery pump (9) that is connected to the pump and that collects the paint (30) into the tank (3) by suction. 3. The coating apparatus for coating paint for cutting ultraviolet rays and the like according to claim 2, further comprising an inverter (39) for adjusting and controlling the drive of the coating pump (8) and the recovery pump (9). 4. The coating apparatus for coating paint for cutting ultraviolet rays and the like according to claim 2, wherein the coating pump (8) and the recovery pump (9) share a single drive motor (7).