JPS6363264B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coating device, and more particularly to a coating device for coating a coating material inside an engine compartment or a trunk compartment of an automobile.

In recent years, due to rust prevention requirements, coatings such as transparent paint, anti-corrosion paint, or wax have been applied mainly to installed parts such as engines and radiators installed in the engine room of finished vehicles. There is. In such cases, it is necessary to selectively apply only the main parts, so parts of the vehicle body such as the cowl top and fenders that do not need to be coated with the paint are covered with masking paper. Therefore, in the past, the handling of masking paper, etc. and the operation of the spray gun were complicated, requiring the skill of the operator and making the work complicated. Furthermore, even if we wanted to automate these tasks,
For example, it has been extremely difficult to automate the masking process for complex-shaped parts such as the area where the cowl top and hood of a vehicle are close together, or to mechanize the coating process for parts installed in the engine room.

The present invention has been made in view of the above-mentioned points, and its purpose is to provide a coating device that solves the problems of the prior art.
The first feature of the coating device is that the opening is covered with a box-shaped shield having an open surface corresponding to the opening of a room to be coated such as an engine room or a trunk room, and an automatic The second feature of the coating device is that the coating device uses a spray gun to apply the coating material into the interior of the chamber to be coated, and the second feature is that the coating device has an opening/closing device that opens and closes an opening/closing cover such as a hood for opening and closing the engine room or a trunk lid for opening and closing the trunk room. The reason lies in the addition of a mechanism.

Next, one embodiment of the present invention will be described with reference to the drawings. Figure 1 shows how the coating device of the present invention is used to apply transparent paint, anti-corrosion paint, wax, etc. mainly to mounted parts such as the engine body, radiator, air cleaner, and fuel system or electrical system installed in the engine room. FIG. 3 is a diagram showing a state in which a coating material is being applied.

The frame of the coating device 1 is composed of a support column 3 installed on a base 2 and a support beam 4 fixed to the upper end of the support beam 4, and an automobile 5 whose engine room is to be coated with paint is laid on the base 2. guide rail 6
For example, the vehicle is driven by a worker along
It stops at a position regulated by a stopper 8 provided on the guide rail 6, that is, at a predetermined painting position. This stoppage is detected by the fixed position detection limit switch 7.

One end of an arm 11 is attached to a driven shaft 10 attached to the support beam 4 via a bracket 9, and a box-shaped shield 12 is attached to the other end. As shown in FIGS. 1 and 2, this box-shaped shield 12 has an open surface 14 on the lower surface that corresponds to the opening 13 of the engine room, and walls 15 on the front and rear surfaces,
16, left and right walls 17, 18 and top wall 1
Consists of 9. The rear wall 16 is inclined so as to be substantially parallel to the hood 20 when the hood 20 for opening and closing the engine compartment of the automobile 5 is in an open state. Note that, as is clear from FIGS. 2 and 3, two arms 11 are provided to connect the driven shaft 10 and the box-shaped shield 12.

The state shown in FIGS. 1 and 2 is a state in which the box-shaped shield 12 is lowered toward the automobile 5 so that the opening 14 of the box-shaped shield 12 faces the opening 13 of the engine room and is located at the application position A. In order to move between this position and the standby position B where the box-shaped shield 12 is retracted as shown by the imaginary line in FIG. A drive chain 24 is attached to a drive side sprocket 22 attached to the drive shaft 21 and a driven side sprocket 23 attached to the driven shaft 10. A support beam 4 is attached to the drive shaft 21.
The rotation of a motor 25 with a brake provided therein is transmitted via a torque limiter coupling 26, thereby rotating the drive shaft 21. Accordingly, the box-shaped shielding body 12 is selectively moved by the motor 25 with a brake between the application position A shown in solid lines in FIG. 1 and the standby position B shown in phantom lines in FIG. The torque limiter coupling 26 limits the rotation of the motor 25 to the drive shaft 21 for safety when torque exceeding a set value is applied to the drive shaft 21, such as when an obstacle comes into contact with the box-shaped shield 12. This is to prevent the information from being transmitted to others. A positioning shock absorber 27 that comes into contact with the arm 11 at the application position A is attached to the bracket 9, and a positioning shock absorber 28 that comes into contact with the arm 11 at the standby position B is attached to the support beam 4.

When the box-shaped shield 12 is installed at the coating position A and the open surface 14 of the box-shaped shield 12 faces the engine room opening 13, if the gap between them is large, paint dust will be drawn from the gap. In order to prevent leakage, rubber flexible aprons (not shown) are installed between the front and rear walls 15, 16 and the left and right walls 1.
The flexible apron may be attached to the entire circumference of the lower end edges of the flexible aprons 7 and 18 so that the flexible apron seals the upper surface of the opening 13 of the engine room at the application position A.

Inside the box-shaped shield 12 are walls 17 and 18 on the left and right sides.
Two shafts 30a and 30b each supported by a bearing 29 at both ends are attached to the shaft. An auto spray gun G is attached to each shaft 30a, 30b by a gun holder 31. In the illustrated embodiment, three auto spray guns G are mounted on one shaft 30a or 30b as shown in FIG.
is installed. The auto spray gun G is an air spray gun that uses compressed air to atomize the paint and spray it onto the object to be coated, or an airless gun that uses compressed air to atomize the paint and spray it onto the object to be coated. Use a spray gun or electrostatic painting gun. In the figure, piping, control valves, etc. for the coating agent supply system or air system are omitted.

In order to swing each auto spray gun G back and forth, the rod 34 of the air cylinder 33 is connected to the tip of the link 32 attached to one shaft 30a by a pin 35, and the main body 36 of the air cylinder 33 is It is connected to the bracket 11a of the arm 11 by a pin 37. Further, a rod 40 of an air cylinder 39 is connected to the tip of the link 38 attached to the other shaft 30b by a pin 41.
It is connected to the bracket 11a of the arm 11 by. Since the shafts 30a and 30b are rotated by the swing angle θ by these air cylinders 33 and 39, the auto air spray gun G also swings back and forth at this angle. Note that one air cylinder 33 is located inside the box-shaped shield 12, and the other air cylinder 39 is located outside the box-shaped shield 12. Therefore, since the other link 38 protrudes from inside the box-shaped shield 12 to the outside, a notch 44 is provided in this portion of the box-shaped shield 12. Therefore, a flexible cover 45 made of synthetic rubber is attached to the box-shaped shield 12 in order to prevent the paint from leaking from the notch 44.

In order to apply a coating material into the engine compartment as shown in FIG. 1 using the coating apparatus of the present invention, the hood 20 serving as an opening/closing lid for opening and closing the engine compartment is opened. For this reason, one embodiment of the hood opening/closing device will be described with reference to FIGS. 5 and 6. In FIG. 5, a coating device substantially similar to the coating device shown in FIGS. 1 to 4 is assembled, and the same reference numerals are used to omit the explanation.

A bracket 50 is attached to a support beam 49 fixed to the support column 3, and a cylinder holder 52 housing an air cylinder 51 with a brake is rotatably attached to the bracket 50 by a pin 53. A spring type damper 54 having a compression coil spring 53 is attached to the support beam 49 for damping and supporting the cylinder holder 52. A hanger bracket 57 is attached to the tip of the piston rod 55 of the air cylinder 51 via an equalizer mechanism 56 (FIG. 6).
The equalizer mechanism 56 is connected to the hanger bracket 5
7 can be tilted slightly,
An end plate 58 fixed to the tip of the piston rod 55
Two pins or bolts 59 loosely pass through the space between the end plate 58 and the hanger bracket 57, and a compression coil spring 6 is attached to the outer periphery of each pin or bolt 59 to abut against the end plate 58 and the hanger bracket 57.
0 is installed.

In order to smoothly reciprocate the piston rod 55 in the axial direction, two slide shafts 61 fixed to the hanger bracket 57 are respectively supported through guides 62 attached to the cylinder holder 52.

The hanger bracket 57 has two rubber vacuum cups 63 that vacuum-adsorb the hood 20.
However, the universal joint 6 can be tilted in any direction forward, backward, left or right.
4, respectively. As the universal joint 64, various universal joints such as a ball joint can be used. The vacuum cup 63 has a suction hose (not shown) that evacuates the inside of the vacuum cup 63 in order to vacuum-adsorb the hood 20.
is attached, and also a vacuum cup 63
A sensor (not shown) is attached to detect when the inside reaches a predetermined degree of vacuum and the hood 20 is suctioned.

Each of the air cylinders 33, 39, 51
The drive motor 25 of the auto spray gun G
The operation, etc. of the is controlled by a control device not shown. The control device is started by a start switch 65 shown in FIGS. 1 and 5.

To apply paint to the engine compartment of an automobile, a worker first transports the completed vehicle 5 to a predetermined application position, and the front wheels 5a actuate the fixed position detection limit switch 7 to prepare the application device for operation. is completed. Box-shaped shield 1 at this time
2 is in a standby state B indicated by a virtual line in FIG. When the start switch 65 is pressed in this ready state, that is, after the limit switch 7 has been activated, the hood opening/closing device shown in FIGS. It descends until it touches the hood 20 with the engine room closed.

After the vacuum cup 63 comes into contact with the hood 20, the inside of the vacuum cup 63 is brought into a vacuum state to bring it into close contact with the hood 20. At this time, since the vacuum cup 63 can be tilted in any direction by the universal joint 64, the vacuum cup 63 does not descend perpendicularly to the surface of the hood 46, and even if the surface of the hood 46 is curved, the vacuum cup 63 completely adheres to the surface of the hood 20. Furthermore, even if the two vacuum cups 63 contact the surface of the hood 20 at different timings when the vacuum cups 63 are lowered,
Since the hanger bracket 57 is tilted by the equalizer mechanism 56, the vacuum cup 63 is completely brought into close contact with the surface of the hood 20. The state in which the vacuum cup 63 is in close contact with the surface of the hood 20 in this manner is shown in FIG. 5 as the vacuum cup 63 is indicated by a phantom line.

Next, the air cylinder 51 is operated in the opposite direction to that described above to move the piston rod 55 backward, thereby opening the hood 20. During this backward movement, the cylinder holder 52 rotates around the pin 53. The vacuum cup 63 in a state in which the hood 20 has been opened is as shown by the solid line in FIG. When a limit switch (not shown) detects that the hood 20 has been opened, the motor 25
starts to drive and rotates the arm 11 until the box-shaped shield 12 reaches the painting position A. This results in
The engine room is covered by a box-shaped shield 12.

Under this condition, the paint is sprayed out from the auto spray guns G in the form of a mist, and the two air cylinders 33 and 39 are driven to swing all the auto spray guns G. Application is completed by spraying the paint from the auto spray gun G for a predetermined period of time.

After the coating is completed, the spray from the auto spray gun G is stopped, the air cylinders 33 and 39 are stopped, and the motor 25 is driven in the opposite direction to that described above. As a result, the arm 11 is rotated and the box-shaped shield 12 is moved to the standby position B. Next, the air cylinder 51 is driven to project the piston rod 55 and lower the hood 46, thereby closing the engine room. Furthermore, release the adsorption of vacuum cup 63,
All coating operations are completed by retracting the piston rod 55.

Note that the box-shaped shield 12 is placed in the standby position B.
In the illustrated embodiment, the arm 11 to which the box-shaped shield 12 is attached is attached to a driven shaft 10 rotated by a motor 25, and is moved between these two positions by rotational movement. Although the box-shaped shield 12 is selectively moved, by attaching the box-shaped shield 12 to the tip of a rod that reciprocates in the axial direction, it can be moved to and from the application position A by reciprocating in the linear direction. It may also be arranged such that it moves to a standby position B provided at a predetermined position in the linear direction.

Further, in the illustrated embodiment, the auto spray gun G is oscillated in the front and back directions by the two air cylinders 33 and 39, but unlike the illustrated embodiment, the shaft 30 is mounted in the front and back direction, so that It is also possible to perform a reciprocating swing motion in the direction. Furthermore, it is also possible to simultaneously swing the auto spray gun G both forward and backward and left and right, and furthermore, by providing a large number of auto spray guns, the swing movement mechanism can be omitted. .

In the illustrated embodiment, the paint or the above-mentioned coating agent is applied to the engine room which is opened and closed by the hood 20, but the room to be coated with rust preventive agent etc. is opened and closed by the trunk lid. It is also possible to use the coating device of the present invention in a trunk room where the vehicle is stored. In this case, the trunk lid is automatically opened and closed by the opening/closing device.

As described above, according to the present invention, the opening of a room to be coated, such as an engine room or a trunk room, is covered with a box-shaped shield having an open surface corresponding to the opening, and an automatic Since the spray gun is used to coat the inside of the room to be coated, for example, when applying transparent paint or wax to parts installed in the engine room, such as the engine body or radiator, the area to be coated can be It is no longer necessary to perform masking work to cover other parts, making this application work extremely simple and making it possible to save labor in the application work. In addition, we have provided an opening/closing mechanism for opening and closing lids such as the hood that opens and closes the engine room or the trunk lid that opens and closes the trunk room. It becomes possible to automatically open the lids of the trunk lid and the like, and the coating work inside the engine room etc. can be carried out smoothly and with high efficiency.

[Brief explanation of drawings]

FIG. 1 is a side view showing a coating device according to an embodiment of the present invention, FIG. 2 is a perspective view showing a box-shaped shield installed at a coating position, and FIG.
A cross-sectional view along the line, FIG. 4 is - in FIG. 1.
FIG. 5 is a side view showing a coating device having an opening/closing mechanism, and FIG. 6 is a view taken along the line - in FIG. 5. DESCRIPTION OF SYMBOLS 1... Coating device main body, 3... Support column, 5... Car, 10... Driven shaft, 11... Arm, 12...
Box-shaped shield, 13...opening, 14...open surface,
21... Drive shaft, 25... Motor, 30a, 30
b... Swing axis, 33, 39... Air cylinder, 5
1...Air cylinder, 55...Piston rod,
56... Equalizer, 63... Vacuum cup, 64... Universal joint, G... Auto spray gun.

Claims (1)

[Scope of Claims] 1. A box-shaped shield that covers the opening and has an open surface corresponding to an opening of a room to be coated, such as an engine room opened and closed by a hood or a trunk room opened and closed by a trunk lid; a moving device for selectively moving the box-shaped shield between an application position where the openings face each other on the open surface thereof and a standby position a predetermined distance away from the application position; A coating device equipped with an auto spray gun that sprays paint into the room to be coated. 2. A box-shaped shield that covers the opening and has an open surface corresponding to the opening of a room to be coated, such as an engine room opened and closed by a hood or a trunk room opened and closed by a trunk lid, and a box-shaped shield that covers the opening. a moving device that selectively moves the open surface to a coating position where the openings face each other and a standby position that is a predetermined distance away from the coating position; An opening/closing device comprising an auxiliary spray gun that sprays a spray gun, an attachment device that can be attached and detached to an opening/closing lid such as the hood or the trunk lid, and an actuator that selectively moves the attachment device between an open position and a closed position of the opening/closing lid. A coating device equipped with a mechanism.