JPH075883Y2 - Automatic painting equipment - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is to apply a coating suitable for the shape of a wide coating object such as an automobile body by vertically moving, horizontally moving and tilting the coating machine. The present invention relates to an automatic coating device controlled to perform, more specifically, to an automatic coating device having a piping configuration in which a paint hose, an air hose, etc. are introduced into the tilt box from the left or right side and connected to the coating machine therein.

(Prior art) In recent years, due to the trend of abundant paint colors, apart from thinner and air hoses, a total of about ten to a dozen paint hoses for each color are provided in a bell type. It is necessary to connect to an electrostatic coating machine.

Therefore, in the conventional coating apparatus, usually, these many hoses are guided from above to the elevating stand equipped with the bell-type electrostatic coating machine (usually 3 units), and the color change valve of each coating machine is used. It had a piping configuration that was connected to the assembly.

For this reason, each hose sways independently due to various movements of the coating machine, and dust adhering to the hose surface and accumulated dust on the hose surface due to contact between the hoses and rubbing contact with the upper surface of the hoisting base, etc. However, there is a problem in that it falls onto the object to be coated that is being transported to and causes a coating failure.

Therefore, the applicant of the present invention has a bell-type electrostatic coating machine and installs insulating connecting cylinders on both left and right sides, as disclosed in, for example, Japanese Patent Application Laid-Open No. 63-88073 and Japanese Patent Application No. 63-100810. The tilt box is a type of coating device that is hung between the left and right device bodies so that it can swing and tilt, and hose bundles such as paint hoses, thinner hoses and air hoses are
From the side, we have developed an automatic coating device that has a piping configuration that is connected to each bell-type electrostatic coating machine in the tilt box through the connecting cylinder.

Since this device puts a bunch of hoses in a box or cylinder above the object to be coated and restricts its movement, dust does not drop on the object to be coated due to the movement of the hose, and the occurrence of defective coating is prevented. It can be effectively prevented.

In addition, since the above device requires insulation measures because the high-voltage power supply cable is connected to the electrostatic coating machine in the tilt box, in addition to insulating the tilt box normally, a connecting cylinder made of an insulating material is also used. Is provided between the tilt box and the swing arm. Therefore, the swing arm itself can be made of highly durable metal, and there is also an advantage that the service life of the device is long.

(Problems to be solved by the invention) However, the above automatic coating device has the following points that should be improved in terms of maintenance.

Since the tilt box is equipped with a plurality of (usually three) electrostatic coating machines protruding downward from the bottom and capable of moving them horizontally, a box whose entire lower surface is open is used, and the left and right sides of the box are used. The portion forms a communication port that communicates with the inside of the connecting cylinder.

Therefore, a part of the paint mist discharged from the painting machine enters the inside of the tilt box, further penetrates into the connecting cylinder through the communication port, and the paint adheres to the inner surface and the hose surface. Therefore, it is necessary to regularly spray the interior of the tilt box with a thinner to clean it.

However, in the conventional coating device disclosed in Japanese Utility Model Application No. 63-100810, since the left and right connecting cylinders are cylindrical bodies having the same inner diameter over the entire length, even if the sprayed thinner dissolves the paint adhered in the connecting cylinders. , It does not flow into the tilt box well and remains inside the connecting cylinder as it is, and not only the paint contamination is not resolved, but the thinner that melted the adhered paint intrudes further into the swing arm side, and the range of paint contamination is reduced. There was a problem that it would spread more.

The present invention has been made to solve the above problems and further improve the above-mentioned new type automatic coating device. The purpose thereof is to clean the inside of the connecting cylinder with a thinner without leaving the paint content. It is to provide an automatic coating device capable of

(Means for Solving the Problem) The present invention provides a tilt box equipped with a coating machine and having two connecting cylinders assembled on the left and right sides, between the left and right swing arms attached to the left and right parts of the coating apparatus, respectively. In an automatic painting apparatus, which is hung in a tiltable manner, and a hose bundle such as a paint hose is passed from the side into the connecting tube, and is installed in a coating machine in the tilt box, the connecting tube is an inner diameter. Relates to an automatic coating apparatus having a shape gradually increasing from the swing arm side to the tilt box side.

The present invention is disclosed in, for example, Japanese Patent Application Laid-Open No. 63-88073 and Japanese Utility Model Application No. 63-1.
It is applied to automatic painting equipment of the type disclosed in 00810.

The connecting tube is a tube that connects a tilt box equipped with a bell-type electrostatic coating machine and a swingable arm on both left and right sides, and is made of an insulating material such as Delrin or NC nylon resin. The connecting tube communicates with the tilt box on one end side, and is pivotally supported on the lower part of the swing arm on the other end side, so that the tilt box is suspended by a proper drive device so as to be tiltable.

The connecting cylinder used in the present invention has a shape in which the inner diameter thereof gradually increases from the swing arm side to the tilt box side. That is, the mouth is gradually widened from the swing arm side to the tilt box side, and the tilt box side portion is assembled so as to be lower than the swing arm side portion.

(Operation) In the present invention, since the connecting cylinder that gradually widens as it gets closer to the tilt box is provided, when cleaning the inside of the tilt box with thinner in the periodic maintenance,
The thinner sprayed in the connecting cylinder does not flow out into the tilt box along the inner surface of the connecting cylinder and the like, so that it does not remain in the connecting cylinder or further enter the swing arm side. Therefore, the adhered paint in the connecting cylinder can be dissolved in the thinner and removed to the outside, and the range of paint contamination is not expanded.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

The coating apparatus of this embodiment is applied to the automatic coating apparatus disclosed in Japanese Utility Model Application No. 63-100810. As shown in FIG. 2, the tracking boxes 4 and 4 are provided on both left and right sides so as to be movable in the transport direction of the automobile body 18 which is the object to be coated (direction perpendicular to the paper surface), and the swing arms 5 and 5 are provided. It is rotatably supported on the side surface of each tracking box 4.
The arm 5 swings as indicated by arrows ± l by a drive mechanism (not shown) in the box 4.

The tilt box 1 is provided between the left and right swing arms 5 and 5.
Is hung by way of the connecting cylinders 3, 3 assembled on both left and right sides thereof. The connecting cylinder 3 is made of an insulating material such as NC nylon, and one end of the connecting cylinder 3 communicates with the tilt box 1, and the other end of the connecting cylinder 3 is pivotally supported by the supporting portion 15 at the lower end of the swing arm 5.
Therefore, the tilt box 1 is configured to perform the tilt movement within the rotation range of ± 90 ° together with the connecting cylinders 3 and 3 by the operation of the drive mechanism 6 provided on the one arm 5.

Further, as shown in FIG. 3, the tilt box 1 has three bell-type electrostatic coating machines 2a to 2c, of which the coating machine 2b is included.
Is fixed, but the left and right coating machines 2a and 2c are horizontally movable on rails 9 and 9. Left and right coating machines 2a, 2c
Are connected to the opposite peripheral edges of the central rotary plate 12 via rods 13, respectively, and the rotary plate 12 is connected to the cylinder 14 and rotates by its operation. Therefore, the left and right coating machines 2a, 2c are designed to horizontally move in opposite directions within the range of the arrow ± m shown in FIG.

Further, as shown in FIG.
All hose bundles 7 such as thinner hoses and air hoses
Through the inside of the connecting cylinder 3 from the left and right sides, put into the tilt box 1, and connected to the color change valve assembly 10 of each coating machine through the converging jig 11.

In this embodiment, as shown in FIG. 1, the connecting cylinder 3 has a shape in which the inner diameter gradually increases from the swing arm 5 side to the tilt box 1 side. That is, the inner diameter d ₀ of the arm 5 side, the inner diameter d ₁ of the central portion, and an inner diameter in the order of the box 1 side of the inner diameter d ₂ is expanding.

Reference numeral 16 denotes a space ring that is rotatably attached to the communication opening 8 of the tilt box 1 and the connecting tube 3, and the hose bundle 7 is in contact with or slidably contacts the inner peripheral surface of the ring 16. . Further, 17 indicates a pin for connecting the box 1 and the tube 3.

Thus, in the coating apparatus of the embodiment, when cleaning the inside of the tilt box 1 with a thinner for maintenance, even if the thinner is sprayed into the connecting cylinder 3, even if the thinner is sprayed to the inside, the thinner liquid will be applied to the connecting cylinder 3. It did not remain inside, and the adhered paint in the cylinder 3 could be washed out completely. (Effect of the Invention) As described above, the automatic coating apparatus according to the present invention employs a connecting cylinder having an inner diameter gradually wider from the swing arm side to the tilt box side, instead of the conventional cylindrical body having an equal inner diameter. Therefore, when cleaning the inside of the tilt box with thinner for regular maintenance, the thinner liquid sprayed into the connecting cylinder can be flowed back well into the tilt box, so that the paint adhered in the connecting cylinder remains. It is possible to obtain the effect that it can be removed to the outside without being used, and that the range of paint contamination due to further penetration of thinner can be effectively prevented.

In addition, the device according to the present invention naturally has an effect that dust is not dropped onto the object to be coated due to the movement of the hose, and the occurrence of coating failure can be prevented.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the inside of a connecting cylinder in an automatic coating apparatus of an embodiment of the present invention, FIG. 2 is a front view showing the automatic coating apparatus of the embodiment, and FIG. 3 is an automatic coating apparatus of FIG. 2 is an enlarged view (including an internal cross section of a tilt box, etc.) of FIG. In the figure, 1 ... Tilt boxes 2a to 2c ... Coating machine 3 ... Connection cylinder 5 ... Swing arm 7 ... Hose bundle 8 ... Communication port 15 ... Support part ± l ... Swing of arm 5 Direction ± m …… Movement direction of coating machines 2a, 2c d ₀ , d ₁ , d ₂ …… Inside diameter of connecting cylinder

Claims (1)

[Scope of utility model registration request] 1. A tilt box equipped with a coating machine, in which two connecting cylinders are assembled on the left and right sides, is suspended between left and right swing arms attached to the left and right parts of the coating device so as to be tiltable. Then, in an automatic painting apparatus in which a hose bundle such as a paint hose is passed from the side into the connecting cylinder and is arranged in a coating machine in the tilt box, the connecting cylinder has an inner diameter from the swing arm side. An automatic coating device with a shape that gradually increases toward the tilt box side.