KR20200069458A - Powder coating device - Google Patents

Abstract

The present invention relates to a powder coating machine for coating a powder paint by spraying the same onto an object to be coated. The powder coating machine allows a powder pump (10) to suck each of first air and second air, allows the powder paint of a storage tank (20) to be sucked to the powder pump (10) by the first air and then pumped to a spray gun (30) through a hose (15), and allows chunks of the powder paint suctioned from the storage tank (10) to the powder pump (10) by the first air to be broken by the second air, thereby uniformly spraying the powder paint when the same is sprayed by the spray gun (30). The spray gun (30) has a first microswitch (40) and a second microswitch (50) respectively mounted thereon. When the first microswitch (40) is turned on, the first air is sprayed by the spray gun (30) through a powder pump (40). When the second microswitch (50) is turned on, the second air is sprayed by the spray gun (30) through the powder pump (40). Therefore, the powder coating machine can prevent coating defects by removing the powder paint remaining in the hose.

Description

Powder coating machine {POWDER COATING DEVICE}

The present invention relates to a powder sprayer for spraying and coating a powder coating onto an object, and more specifically, a first micro switch for discharging the first air to the spray gun and a second micro switch for discharging the second air, respectively. By mounting, the second micro switch is turned on, and then the first micro switch is turned on, so that the powder coating of the storage tank is first sprayed by the second air before the powder coating of the storage tank is sprayed from the spray gun by the powder pump. It relates to a powder sprayer that is sprayed to remove powder coating remaining in the hose.

In Korea Patent Application Publication No. 10-2018-0099186 (published on September 5, 2018), "Electrostatic powder coating spray device" is introduced.

The electrostatic powder coating spraying device is a reservoir for supplying the powder paint charged by high-pressure static electricity together with compressed air, a first injector for discharging the powder paint stored in the reservoir, and a second for discharging the powder paint stored in the reservoir An injector, a powder coating device provided as a controller for controlling the first injector; It includes a main body provided with a first spray pipe connected to the first injector, a spray gun equipped with a second spray pipe connected to the second injector mounted on the main body by mounting means.

However, in the conventional electrostatic powder coating spraying apparatus, a cleaning valve body is separately provided to the first injector and the second injector, and the main air hose, the auxiliary air hose and the cleaning air hose are respectively connected to each other. This is complicated, and there is a hassle of having to separately operate the lever of the controller for cleaning after completing the painting.

Accordingly, an object of the present invention is to mount the first micro switch for discharging the first air and the second micro switch for discharging the second air to the spray gun, and after the second micro switch is turned on, the first micro By turning on the switch, before the powder coating of the storage tank is sprayed from the spray gun by the powder pump, the powder coating remaining in the hose is first sprayed by the second air to remove the powder coating remaining in the hose. When the powder coating is sprayed from the spray gun together with the first air, it prevents puffy, thereby providing a powder sprayer capable of solving the problem of defective coating.

An example of a powder coating machine according to the present invention for achieving the above object is that the powder pump sucks the first air and the second air, respectively, and the powder coating of the storage tank is sucked into the powder pump by the first air. Then, the lump of the powder coating material, which is conveyed to the spray gun through the hose and sucked from the storage tank by the first air into the powder pump, is broken by the second air. In the sprayer, the spray gun is equipped with a first micro switch and a second micro switch, respectively, when the first micro switch is turned on, the first air is injected from the spray gun through a powder pump, and the second micro switch is turned on. When, the second air is characterized in that it is injected from the spray gun through a powder pump.

In the spray gun, the working rod is operated by a trigger for spraying the powder coating, and by the trigger, the working rod is moved to the rear of the body, and the trigger is divided into primary and secondary, and the trigger is pulled first. When the second micro switch is first turned on by the working rod and the spinner is further pulled second, the first micro switch is turned on later by the working rod than the second micro switch.

The operation rod is characterized in that a step portion is formed at the rear end, the second micro switch is turned on before the first micro switch by the rear end, and the first micro switch is turned on by the step after the second micro switch is turned on. Is done.

By this, the powder coating machine according to the present invention, before the powder coating of the storage tank is sprayed from the spray gun by the powder pump, the powder coating remaining in the hose is first sprayed by the second air, and the powder coating remaining in the hose By removing, when the powder coating material of the storage tank is sprayed from the spray gun together with the first air, it is prevented from becoming jerky, and it is possible to solve the problem of defective coating.

1 is a schematic view showing a powder coating machine according to the present invention
Figure 2 is a side view showing the spray gun of Figure 1
3 is an operation flow chart showing an example in which the first and second micro switches are turned on by an operation rod of a trigger provided in the spray gun.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

Referring to Figure 1, the powder coating machine according to the present invention, the powder pump 10 is to inhale the first air and the second air, respectively, the powder coating of the storage tank 20 by the first air powder pump (10 ), after being sucked into the spray gun 30 through the hose 15, a lump of powder coating material sucked into the powder pump 10 from the storage tank 10 by the first air is caused by the second air. By being broken, the powder coating is uniformly sprayed when sprayed in the spray gun 30.

1 and 2, the spray gun 30 is equipped with a first micro switch 40 and a second micro switch 50, respectively, and when the first micro switch 40 is turned on, the first air Is injected from the spray gun 30 through the powder pump 40, and when the second micro switch 50 is turned on, the second air is injected from the spray gun 30 through the powder pump 40.

1 to 3, the spray gun 30 is also operated by the trigger rod 32 for spraying the powder coating, the working rod 32 is operated, and the trigger rod 31 is operated by the trigger 31 2 is moved to the rear of the main body, as shown in the direction of the arrow 39 in FIG. 2, the trigger 31 is divided into primary and secondary pulled, and the trigger 31 is pulled primary, by the operating rod 32 When the second micro switch 50 is first turned on, and the spinneret 31 is further pulled second, the first micro switch 40 is turned on by the working rod 32 later than the second micro switch 50. .

At this time, the user pulls the trigger 31 of the spray gun 30 only slightly, so that only the first micro switch 40 is turned on, so that only the powder coating remaining on the hose 25 is removed, and the operation is not performed. It may or may not maintain the primary pull of the trigger 31 until the powder coating remaining on the hose 25 is completely removed from the hose.

2 and 3, the operation rod 32 is formed with a step portion 34 at the rear end, so that the second micro switch 50 is preceded by the first micro switch 40 by the rear end 33. After being turned on and the second micro switch 50 is turned on, the first micro switch 40 is turned on by the step portion 34.

That is, in the standby state of operation as shown in (a) of FIG. 3, when the user first presses the trigger 31 (see FIG. 1 ), as shown in (b) of FIG. 3, the operation rod 32 is an arrow 39. In the first movement, the second micro switch 50 is first turned on by the rear end 33 of the operation rod 32, and when the user further presses the trigger 31 second, the ( As shown in c), when the operation rod 32 further moves in the direction of the arrow 39, the first micro switch 40 is turned on by the step portion 34.

The powder sprayer according to the present invention configured as described above, as described above, in the operating standby state as shown in FIG. 3(A), when the user first presses the trigger 31, as shown in FIG. 3(B), Since the working rod 32 is primarily moved in the direction of the arrow 39, the second micro switch 50 is first turned on by the rear end 33 of the working rod 32. Then, when the second micro switch 50 is turned on, the turn-on signal of the second micro switch 50 is input to the control unit (not shown), and the powder pump 10 is operated by the control unit, so that the second air is turned on. It is sucked into the powder pump 10, and the powder paint accumulated in the hose 25 by the second air is sprayed through the spray gun 300.

Thereafter, when the user further presses the trigger 31 further, as shown in (c) of FIG. 3, when the operation rod 32 further moves in the direction of the arrow 39, the first step is made by the step 34. The micro switch 40 is turned on. Then, when the first micro switch 40 is turned on, the turn-on signal of the first micro switch 40 is input to the control unit (not shown), and the powder pump 10 is operated by the control unit, so that the first air is turned on. It is sucked into the powder pump (10), and the powder coating material of the storage tank (20) is compressed by the first air to the spray gun (30) through the powder pump (10), and sprayed to the outside through the spray gun (30). .

In general, when the painting operation is completed, the powder coating remains on the hose, and when the next operation is started, the powder coating remaining on the hose interferes with the transfer of the powder coating newly sucked by the powder pump, thereby spraying the powder coating on the spray gun. When it is sprayed, a squeaking phenomenon occurs, and coating defects occur.

Therefore, the powder sprayer according to the present invention is sprayed with the powder coating remaining in the hose 25 when the second air, which is weaker in strength than the first air, is first sprayed from the spray gun 30 and the second air is sprayed. , By removing the powder coating remaining in the hose 25, when the powder coating of the storage tank 20 is sprayed from the spray gun 30 together with the first air, it prevents the pulp phenomenon.

10: powder pump 20: storage tank
25: hose 30: spray gun
31: trigger 32: working rod
40: first micro switch 50: second micro switch

Claims (3)

The powder pump 10 sucks the first air and the second air, respectively, and after the powder paint of the storage tank 20 is sucked into the powder pump 10 by the first air, sprays through the hose 15 The powder is sprayed from the spray gun 30 by being crushed by the second air among the powder coating materials that are compressed by the gun 30 and sucked into the powder pump 10 from the storage tank 10 by the first air. In the powder sprayer that is sprayed evenly when possible,
The spray gun 30 is equipped with a first micro switch 40 and a second micro switch 50, respectively, and when the first micro switch 40 is turned on, the first air is sprayed through the powder pump 40. When sprayed from the gun (30), the second micro switch (50) is turned on, the powder sprayer, characterized in that the second air is sprayed from the spray gun (30) through the powder pump (40).
According to claim 1,
In the spray gun 30, the working rod 32 is operated by the trigger 31 for spraying the powder coating, and the working rod 32 is moved to the rear of the body by the trigger 31, and the trigger ( 31) is divided into primary and secondary pulled, trigger 31 is pulled primary, the second micro switch 50 is first turned on by the operating rod 32, the spinneret 31 is further secondary When pulled, the powder sprayer, characterized in that the first micro switch 40 is turned on later than the second micro switch 50 by the operating rod 32.
According to claim 2,
The operation rod 32 is formed with a step portion 34 at the rear end, the second micro switch 50 is turned on before the first micro switch 40 by the rear end 33, and the second micro switch 50 ) Is turned on, the powder coating machine characterized in that the first micro switch 40 is turned on by the step portion (34).

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