JPS6323835B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is capable of swinging an object to be painted around a horizontal first axis while holding the object, as well as swinging the object in a direction intersecting the first axis. The present invention relates to a coating device configured to be able to rotate around a second axis and particularly suitable for coating the inside of a hollow part of a hollow object to be coated.

Conventionally, when painting the inside of the hollow part of a hollow object to be painted, the object to be painted is kept in a fixed state, and then a paint gun is operated to spray the inside of the hollow part. Alternatively, the object to be painted was manually rotated or rocked with the paint sealed inside the hollow part. In such cases, it is not only extremely difficult to uniformly coat the inside of the hollow portion, but also the work efficiency is extremely low.

Therefore, the main object of the present invention is to provide a method that is particularly suitable for painting the inside of the hollow part of a hollow object to be painted. It is an object of the present invention to provide a coating device capable of efficiently carrying out coating work.

An embodiment of the present invention will be described below with reference to the drawings. First, in FIGS. 1 and 2, the pivot parts 3 and 4 on a pair of opposing horizontal frame members 2a and 2b of the fixed frame 2 supported on the support base 1 are surrounded by the fixed frame 2. Swing shafts 6 and 7 that swing in the inner space are respectively supported by bearings, and a driven pulley 8 on the swing shaft 6 is moved around the frame member 2a.
Drive pulley 10 of the pneumatic motor 9 arranged above
By being driven forward and backward through the belt 11, the swing frame 5 is swung around a common horizontal axis passing through each of the pivot parts 3 and 4.

A pair of opposing frame members 5a and 5b of the swing frame 5
Pivot parts 12 and 12' are formed on the upper part, and a rotating shaft 14 fixed to the center of the rotating frame 13 is supported by a bearing on one of the pivot parts 12. A pair of arms 19, 19' protrudes from both ends of the frame member 5b.

Both ends of a movable frame 22 are slidably supported on each arm 19, 19' by sliding bearings 19a, 19a', respectively, and a pivot portion 12' is provided at the center of the movable frame 22. The distal end of the telescopic rod 24 of the pneumatic actuating cylinder 23 is fixed so that it cannot move in the axial direction and is rotatably supported by a bearing. The driven pulley 15 on the rotating shaft 14 is rotationally driven in one direction via the belt 18 by the driving pulley 17 of the pneumatic motor 16 disposed on the frame member 5a, so that the rotating frame 13 It is adapted to be rotated about an axis that passes through the branches 12, 12' and intersects with the direction of the horizontal swing axis of the swing frame 5. In the embodiment shown in FIG. 1, the direction of the rotational axis of the rotating frame 13 is substantially perpendicular to the direction of the swinging axis of the swinging frame 5. In the embodiment shown in FIG.

Holders 20 and 20' are mounted on the side of the rotating frame 13 facing the moving frame 22 to hold the objects W and W' to be coated, which are opened and closed by an actuator 21 operated by air pressure. Along with this, moving frame 2
On the side facing the rotation frame 13 of No. 2, there are holders 25, 25' for holding the objects W, W' to be coated, which are opened and closed by the pneumatic actuator 26, in cooperation with the holders 20, 20'. is installed. When holding a relatively small workpiece _W1 using each holder 20, 20' and 25, 25', it is possible to hold the workpiece W1 in an extended state with the telescopic rod 24, and also to hold a relatively large workpiece W1. When holding the painted object _W2 , the telescopic rod 24 can be held in a more contracted state.

Since the embodiment shown in FIGS. 1 and 2 is constructed as described above, it can be used in a hollow space such as a fuel tank having an opening 27 such as the gasoline inlet shown in FIG. When painting the inside of the hollow part of the object to be painted W, first, as shown in FIG. The holding parts 20, 20' and 25, 25' are held by the holders 20, 20' and 25, 25', and then, as shown in FIG. After the injection is completed, the opening 27 is closed with the lid 29 to seal the hollow space, as shown in FIG. 4c.

After completing the above preparations, as shown in Figure 4 d,
While driving the pneumatic motor 16 to rotate the rotary frame 13 about its rotation axis, the pneumatic motor 9 is rotated in one direction to swing the swing frame 5 in one direction about the swing axis. After a certain period of time has elapsed in the state shown in Fig. 4 d, the rotating frame 1
3 is kept rotating around its rotation axis, the swing frame 5 is rocked in the other direction around its swing axis, and the object W to be coated continues to rotate around its horizontal axis. After a certain period of time has elapsed in the state shown in Fig. 4 e, Fig. 4 f
While rotating the rotating frame 13 around its rotation axis, the swing frame 5 is further rocked in the other direction around its swing axis, and this state is maintained for a certain period of time. The steps shown in FIGS. 4d to 4f may be repeated back and forth as necessary. These Figure 4d
Through the steps shown in FIG. 4F to 4F, even if partition plates 32, 32' are formed in the hollow part of the object W to be coated, the inside of the hollow part can be uniformly coated without causing unevenness.

After completing the above steps, as shown in Figure 4g,
Each actuator 21, 26 is actuated to hold the holders 20, 2.
0' and 25, 25' are released from the object W to be coated,
Next, as shown in FIG. 4h, the object W to be coated is placed on the mounting table 30 with the opening 27 facing downward.
The coating process is completed by removing the lid 29 and discharging the paint inside the hollow part into the container 31.

Since the pneumatic motors 9, 16, the pneumatic cylinder 23, and the respective actuators 21, 26 are all operated by pneumatic pressure, they are safe from a fire prevention standpoint.

As described above, according to the present invention, the object to be coated can not only be swung around the horizontal first axis while being held, but also be able to swing in the direction intersecting the first axis. Since the coating device is configured to be able to rotate around the second axis, the coating device according to the present invention is particularly suitable for coating the inside of a hollow part of a hollow object to be coated. When painting the inside of a hollow part of an object, the inside of the hollow part can be coated evenly and uniformly, the painting work can be carried out rationally and efficiently, and the process can be automated. It is possible.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional plan view of a coating device according to an embodiment of the present invention, FIG. 2 is a side view of the device of FIG. 1,
Figure 3 is a perspective view showing an example of the object to be painted, Figure 4a
4h to 4h are process explanatory diagrams showing an example of the coating process in applying the coating inside the hollow part of the object to be coated in FIG. 3 using the coating apparatus in FIGS. 1 and 2. 2... Fixed frame, 5... Swinging frame, 13... Rotating frame, 20, 20', 25, 25'... Holder, 22
...Moving frame.

Claims (1)

[Claims] 1 A swinging frame 5 pivotally supported by the fixed frame 2 so as to be swingable around a first axis horizontal to the fixed frame 2.
and a rotating frame 13 that is pivotally supported by the swinging frame 5 so as to rotate about a second axis in a direction intersecting the direction of the first axis with respect to the swinging frame 5; a movable frame 22 that is movable in the second axis direction and supported by the rotary frame 13 so as to rotate together with the rotary frame 13 about the second axis; and the rotary frame 13 and the movable frame 22.
A coating apparatus comprising holders 20, 20', 25, and 25' respectively mounted on the rotary frame 13 and the movable frame 22 for holding objects W, W' to be coated between them.