JPH09155249A - Wax agitator in wax spray coater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform spray coating without causing deviation of components by agitating and mixing heated and melted wax. SOLUTION: A hermetically sealed wax tank 2 containing heated and melted wax is provided with a rotating shaft 14 rotated by the jetting of high pressure air from jetting nozzles 15, 15 and agitating blades 17, 17 fitted to the rotating shaft 14, and the wax melt is agitated and mixed by the agitating blades 17, 17. To the rotating shaft 14, a third high pressure air supply pipe H3 is connected through a second solenoid stop valve V2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wax spray applicator for applying a liquefied wax which has been melted by heating with a spray gun, and more particularly to a wax which can be spray-coated without component unevenness by stirring and mixing the melted wax. The present invention relates to a stirring device.

[0002]

2. Description of the Related Art An apparatus is disclosed in which a solid wax is heated and melted in a sealed tank to be liquefied, and the solid wax is spray-coated on a target surface by a spray gun.
Are already known.

In this conventional spray coating apparatus, as shown in FIG. 5, a sealed tank 52 containing a heated and melted wax W, a low pressure air supply pipe 53 connected to the tank 52, and a liquid wax in the tank 52 are provided. Outlet pipe 54 taken out to the outside
And a spray gun 58 in which the outlet pipe 54 is connected to one connection port 55 and the high pressure air supply pipe 57 is connected to the other connection port 56.

In the above, the tank 52 is supplied with low pressure air of 0.2 to 0.5 kgf / cm ² , specifically,
In addition, the other connection port 56 of the spray gun 58 is 2.5 to
High pressure air of 3.0 kgf / cm ² is supplied. Further, an electric heater and a temperature control sensor (not shown) are incorporated in the tank 52 and the outlet pipe 54, and the wax W is 60
It is maintained at a constant temperature of about 70 degrees.

However, the operator can spray the wax in a finely divided state by directing the spray gun 58 to the coating surface of the vehicle body to be sprayed and pulling the trigger. After spraying, the worker rubs the coated surface with a waste cloth, mop, or the like according to a conventional method, which allows the coated surface to have a gloss finish.

[0006]

The wax used in this spray coating apparatus is a solid wax generally composed of a wax component such as carnauba wax, which is dissolved in silicone oil, vegetable oil or the like. When left in a dissolved state for a long time, the main component and the solvent are separated. Therefore, a sufficient waxing effect cannot be expected when spray coating in this state.

The present invention has been made by paying attention to such problems of the prior art, and by stirring and mixing the melted wax, uniform wax spray coating with no component unevenness is performed, and a sufficient waxing effect is exhibited. It is an object of the present invention to provide a wax agitating device in a wax spray coating machine that can be used.

[0008]

In order to achieve the above object, the wax agitator in the wax spraying applicator according to the present invention is constructed as follows. That is to say, the gist of the matter is to provide a sealed tank containing the heated and melted wax, and to install a rotary shaft that is rotationally driven by the reaction of high-pressure air injection in this tank and a stirring blade fixed to this rotary shaft. A high-pressure air supply pipe having an on-off valve is connected to the rotary shaft.

According to the second aspect of the wax agitating device in the wax spraying applicator according to the present invention, the injection nozzle for injecting high pressure air is provided in the tank, and the exhaust pipe having the relief valve is connected to the tank. Use as a summary.

[0010]

When the wax is left in the heated and melted state, the on-off valve is opened to supply high pressure air to the rotary shaft. The rotary shaft rotates by the reaction of the air injection, and drives the stirring blade to rotate.
As a result, the separated main component and the solvent are stirred and mixed well. By spraying and applying wax in this mixed state, a sufficient waxing effect on the target surface can be achieved.

Although noise is generated by the air injection from the injection nozzle, it can be suppressed when it is provided in the tank. Since the tank is hermetically sealed, the injection is weakened when high-pressure air is introduced, and the rotational force of the stirring blade is reduced. To counter this, the relief valve is opened to reduce the internal pressure of the tank.

[0012]

EXAMPLE An example of the wax stirring device according to the present invention together with a wax spray coating machine will be described below.

In FIG. 1, reference numeral 1 is a main body of a wax spray coating machine, and 2 is a wax tank disposed in an upper portion of the main body 1.
A lid 3 covers the upper surface of the wax tank 2 and the lid 3 seals the wax tank 2. Reference numeral 4 is an electric heater disposed on the outer wall of the wax tank 2. Reference numeral 5 is a heat retaining layer 6 such as glass wool for covering the wax tank 2.
Is a flexible wax lead-out pipe having one end connected to the bottom of the wax tank 2 and the other end connected to one connection port of the spray gun 7.

Reference numeral 8 denotes a heat retaining layer which covers the outer peripheral portion of the lead-out pipe 6, and an electric heater (not shown) for heating the lead-out pipe 6 is disposed inside the heat-retaining layer 8 over the entire length. Reference numeral 9 is a temperature sensor provided in the wax tank 2. Reference numeral 10 is also a liquid level sensor. The temperature sensor 9 measures the liquid temperature of the heated and melted wax, and when it reaches a predetermined temperature,
The ready indicator lamp 12 of the operation panel 11 shown in FIG. The temperature sensor 9 keeps the liquid temperature constant by turning on and off the electric heater 4.

In FIG. 2, reference numeral 13 denotes a hollow support shaft 14 that is erected on the lower surface of the wax tank 2, and reference numeral 13 denotes a rotation shaft that is rotatably supported by the support shaft 13, and a pair of injection nozzles 15 that open in a tangential direction. , 15 are provided at the upper end portion, and the injection nozzles 15, 15 are provided in the wax tank 2. 1
6 is a step portion 17 for preventing the rotary shaft 12 from coming off, and 17 is a rotary shaft 1
4 is a wax stirring blade attached to the lower end of No. 4. The air supply means for supplying the compressed air to the rotary shaft 14 via the support shaft 13 will be described later.

Reference numeral 22 is a cleaning liquid tank provided on the side of the wax tank 2. Reference numeral 26 is a lid of the cleaning liquid tank 22. One end of the cleaning liquid tank 22 is connected to the bottom of the cleaning liquid tank 22, and the other end is connected to one connection port of the spray gun 27. The flexible cleaning liquid outlet pipe 30 is a cleaning liquid tank 22, and the liquid level sensor 37 is a cleaning liquid stirring blade, which is attached to the lower end portion of the rotating shaft 34 which rotates in response to ejection of pressure air. The structure of the cleaning liquid stirring blade 37 is the same as that of the wax stirring blade described above.

Next, R1 and R2 are first and second regulators F connected in series arranged at the bottom of the main body 1, an air filter C is an air source such as a compressor connected to the first regulator R1. In one embodiment, the set pressure of the first regulator R1 is set to a high pressure of 3.0 kgf / cm.
² and the set pressure of the second regulator R2 is set to a low pressure of 0.5 kgf / cm ² . The compressed air set by these regulators R1 and R2 is the first to third
It is supplied to the spray gun 7 for wax, the spray gun 27 for cleaning liquid, the wax tank 2, and the cleaning liquid tank 22 via the electromagnetic on-off valves V1 to V3.

The wax spray gun 7 is supplied with high-pressure air by a first high-pressure air supply pipe H1, and the wax tank 2 is provided with a second high-pressure air supply pipe H1 having a first electromagnetic on-off valve V1.
2 supplies high-pressure air respectively. Further, high pressure air is supplied to the rotary shaft 14 having the wax stirring blade 17 by a third high pressure air supply pipe H3 having a second electromagnetic on-off valve V2.

High pressure air is supplied to the cleaning liquid spray gun 27 by a fourth high pressure air supply pipe H4 and high pressure air is supplied to the cleaning liquid tank 22 by a fifth high pressure air supply pipe H5.
Further, high pressure air is supplied to the rotary shaft 32 having the cleaning liquid stirring blade 37 by a sixth high pressure air supply pipe H6 equipped with a third electromagnetic on-off valve V3. In the wax tank 2, the low pressure air set by the second regulator R2 is supplied to the low pressure air supply pipe L1.
Supplied by.

The first exhaust pipe E2 is connected to the wax tank 2 and is provided with the first electromagnetic relief valve V4. The first exhaust pipe E2 is connected to the cleaning liquid tank 22, and the second electromagnetic relief valve V5 is connected.
It is an exhaust pipe equipped with. The above-described first to third electromagnetic on-off valves V1 to V3 and the first and second electromagnetic relief valves V4 and V5 are all open two-port switching valves when energized.

The structure of the wax spray coating apparatus according to the embodiment is as described above, and the operation is performed as follows.

First, the lid 3 is opened, and a commercially available solid wax is put into the wax tank 2. Lid 3 after charging
Close and seal. Then, the electric heater 4 is energized to heat the tank 2 and melt the wax. On the other hand, the open / close valve (not shown) is opened to connect the air source C to the first regulator R1. By connecting the air source C, low-pressure air flows into the wax tank 2 and the internal pressure of the tank rises, so that the liquefied wax reaches the one connection port of the spray gun 7 through the outlet pipe 6.

When the air source C is connected, high pressure air is supplied to the other connection port of the spray gun 7. When the above preparatory work is completed, the spray gun 7 is directed toward the painted surface of the vehicle body, which is the object, and the trigger is operated to perform the spray coating work. Wax is ejected in the form of fine particles from the nozzle of the spray gun 7, and can be applied uniformly to an object as in the case of coating with a general paint.

The applied wax adheres to the target surface and solidifies, and the target surface can be gloss-finished by rubbing it with a waste cloth, mop or the like according to a conventional method.

The above-mentioned solid wax is composed mainly of wax such as carnauba wax, which is dissolved by silicone oil, vegetable oil or the like, and when left in a heated state for a long time, in the wax tank 2. The main component and the solvent separate. Therefore, when spray coating is performed in this state, a sufficient waxing effect cannot be obtained.

In this case, the wax agitation switch 18 of the operation panel 11 shown in FIG. 4 is operated to open the second electromagnetic on-off valve V2 to rotationally drive the rotary shaft 14.
This allows the wax stirring blade 17 to stir the melted wax and uniformly mix the various components.

When the high-pressure air is injected in the above, the first electromagnetic relief valve V4 is opened to exhaust the air so that the internal pressure of the wax tank 2 does not rise. In designing, the rotation time and exhaust time of the stirring blade 17 are set, that is, the operation of the second electromagnetic on-off valve V2 and the first electromagnetic relief valve V4 is performed by electrical sequence control using a timer. It's easy.

When the stirring operation is performed as described above, the second electromagnetic on-off valve V2 is closed, and then the first electromagnetic relief valve V4 is closed, and then the wax tank. Wait for a short time when 2 is set to a predetermined internal pressure,
Perform spray application work. By stirring and mixing the wax, the wax can be applied by spraying in a state where there is no unevenness in the components.

Next, although not the gist of the wax spray coating apparatus according to the present invention, the descaling work performed as a pre-work for waxing will be described.

When performing this descaling operation, the cleaning liquid is supplied to the tank 22 and then the tank is sealed with the lid 23,
The trigger of the spray gun 27 is operated to spray the target surface of the vehicle body. Since the cleaning liquid is sprayed as fine particles from the spray gun 27, it can be uniformly applied to the target surface without waste.

After application, it may be wiped off with a waste cloth or the like in accordance with a conventional method, whereby stains can be removed cleanly and the above waxing can be more effectively performed. In addition, the cleaning liquid stirring switch 1 of the operation panel 11
9 is operated to open the third electromagnetic on-off valve V3 with the second electromagnetic relief valve V5 opened, the stirring blade 37 is rotated by the rotating shaft 34, and thereby the cleaning liquid is mixed. You can

In the above-described embodiment, it is conceivable to turn on the wax agitation switch 18 in a state in which the electric heater 4 has a problem and the wax is solidified. In this case, the injection nozzles 15, 15 of the rotary shaft 14 are simply used. Only the pressurized air is jetted from there, and the drive system is not hindered. This is a characteristic feature compared to a general electric motor drive system.

Further, in one embodiment, the injection nozzles 15 and 15 are installed in the wax tank 2 in order to suppress noise due to air injection.
Although it is provided inside, it may be provided outside the tank. In this case, since the internal pressure of the wax tank 2 does not rise when the stirring blade 17 rotates, it is not necessary to open the relief valve V4, and therefore the structure and the operation can be simplified.

[0033]

As described above, the wax agitating device in the wax spraying applicator according to the present invention is provided with the agitating blades which are rotated by the injection of the high pressure air in the wax tank, thereby agitating and mixing the dissolved wax. Therefore, it is possible to achieve a sufficient waxing effect without causing unevenness in the spray coating component.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an embodiment of a wax spray coating machine equipped with a wax stirring device according to the present invention.

FIG. 2 is an explanatory view showing a configuration of a wax agitator in the same manner.

FIG. 3 is an explanatory diagram showing a configuration of an injection nozzle.

FIG. 4 is an explanatory diagram of an operation panel in the wax spray coating machine.

FIG. 5 is an explanatory diagram of a conventional wax spray coating device.

[Explanation of symbols]

 2 Wax tank (tank) 6 Wax outlet pipe (outlet pipe) 7 Spray gun 13 Spindle 14 Rotating shaft 15 Injection nozzle 17 Wax stirring blade 13 Operation panel V2 Second solenoid valve (open / close valve) H3 Third High pressure air supply pipe (high pressure air supply pipe) L1 Low pressure air supply pipe E1 First exhaust pipe (exhaust pipe) V4 First electromagnetic relief valve (release valve)

Claims (2)

[Claims] 1. A hermetically sealed tank for containing a wax melted by heating, a low-pressure air supply pipe connected to the tank, an outlet pipe for taking out the liquid wax in the tank to the outside, and the outlet pipe for one connection port, A wax spray applicator equipped with a spray gun having a high-pressure air supply pipe connected to the other connection port, wherein a rotary shaft that rotates in reaction to the injection of high-pressure air and a stirring blade fixed to the rotary shaft are provided in the tank. And a high-pressure air supply pipe having an opening / closing valve is connected to the rotary shaft. 2. A wax agitator for a wax spray coating machine according to claim 1, wherein an injection nozzle for injecting high-pressure air is provided in the tank, and an exhaust pipe having a relief valve is connected to the tank.