JPH0225504Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a coating device for coating decorative grooves, etc. of door panels.

[Background technology]

Conventionally, door panels have been manufactured in which a surface plate is provided with a decorative groove and the inside of the groove is painted. However, since the painting in the grooves was done manually with a brush, it was inefficient, and the paint protruded from the grooves, which required work to be swept away.

Therefore, we proposed a coating device consisting of a paint supply nozzle that supplies paint into the groove and a paint suction nozzle that sucks in the supplied excess paint. according to this,
Painting can be done without paint protruding from the grooves,
Workability is greatly improved compared to conventional methods. However, the suction efficiency of the paint suction nozzle is insufficient, and the suction device requires a correspondingly large capacity.

[Purpose of invention]

The purpose of the coating device of this invention is to provide a coating device with improved suction efficiency.

[Disclosure of invention]

In the coating device of this invention, the suction port of the suction nozzle is shaped to be elongated in the direction in which the object to be coated travels.

Embodiment An embodiment of this invention is shown in FIGS. 1 to 7. In the figure, 1 is a conveyor serving as a feeding device, which conveys the door panel 2 in the direction of arrow Q. The door panel 2 has rectangular grooves 3 formed on its surface as shown in FIG. A paint supply nozzle 4 facing downward is provided above the conveyor 1, and a paint suction nozzle 5 is provided adjacently to the downstream side thereof.
The paint suction nozzle 5 is a round pipe whose lower end is constricted to form an oval suction port 5a that is elongated in the conveyance direction. The paint suction nozzle 5 is connected to a suction blower or the like.

Operation The door panel 2 is conveyed by the conveyor 1 in the direction of arrow Q, and paint is supplied into the groove 3 from the paint supply nozzle 4. Excess paint that has become oversupplied is sucked through the paint suction nozzle 5. Therefore, the paint may
It does not protrude from the surface and allows for high quality painting.

Since the paint suction nozzle 5 has a shape in which the suction port 5a is long in the longitudinal direction of the groove 3, the suction efficiency is higher than in the case of a circular shape. In other words, the total suction flow rate is the sum of the air suction amount and the paint suction amount, and the suction efficiency is expressed as the paint suction amount divided by the air suction amount. As the paint flow is shown by the thick arrow, when the suction port 5a is oval, the proportion of paint flow is greater than when the suction port 5a' is circular. Therefore, suction efficiency is improved. Therefore, the capacity of the suction blower only needs to be that small.

In the above embodiment, the door panel 2 is conveyed by the conveyor 1, but the nozzles 4 and 5 may be made to run while the door panel 2 is kept in a fixed position.

FIG. 8 shows an example of support means for the paint suction nozzle 5. As shown in FIG. The paint suction nozzle 5 is fixed to a movable frame 7 provided with wheels 6. The movable frame 7 has a shaft portion 7a penetrating through a guide member 9 provided on a fixed base 8 so as to be movable up and down.

With this configuration, even if the door panel 2 is warped, the wheels 6 placed on the surface of the door panel 2
Since the paint suction nozzle 5 is supported by the paint suction nozzle 5, the gap d between the paint suction nozzle 5 and the surface of the door panel 2 is always constant. Therefore, there is no suction failure due to variations in the gap d, and constant suction can be performed at all times. Note that the paint supply nozzle 4 (FIG. 1) may also be attached to the movable frame 7. The rest is the same as the first embodiment.

FIGS. 9 and 10 show still other embodiments. That is, both nozzles 4 and 5 are mounted on the movable frame 11,
Wheels 12 are attached, and shaft portions 11a protruding from both side surfaces of the movable frame 11 are supported by bearings 13 on a base 14 so as to be freely movable in the axial direction. wheel 1
2 is formed in a tapered shape so that a portion thereof fits into the groove 3.

When configured in this way, the wheel 12 moves freely in the width direction following the groove 3, and both nozzles 4 and 5 also move together with this. Therefore, even if there is variation in the widthwise position of the groove 3 due to machining accuracy, both nozzles 4 and 5 follow this and move to supply and suck paint. This eliminates the possibility of paint protruding or fading of the painted surface.

[Effect of idea]

The coating device of this invention has the effect of improving suction efficiency.

[Brief explanation of drawings]

Fig. 1 is a side view of an embodiment of this invention, Figs. 2 and 3 are a side view and a bottom view of the paint suction nozzle, respectively, and Figs. Fig. 6 is an explanatory view comparing the functions of the same embodiment and the conventional example, Fig. 7 is a front view of the door panel, Fig. 8 is a front view of a modified example of the nozzle support means, Figs. FIG. 10 is a side view and a front view of another modification of the nozzle support means, respectively. 1... Conveyor, 2... Door panel, 3...
Groove, 4... Paint supply nozzle, 5... Paint suction nozzle, 5a... Suction port.

Claims (1)

[Scope of utility model registration request] A paint supply nozzle facing downward for discharging paint; a paint suction nozzle provided near this nozzle and having a long downward suction port extending in the direction of separation from each other; and a feeding device that moves the paint suction nozzles in a direction that advances toward the paint suction nozzles.