JPS6229095Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for automatically painting the body of a vehicle such as an automobile, particularly the hem portion of the vehicle body, that is, the lower front, lower sides, and lower rear surface.

BACKGROUND ART Conventionally, in painting the hem of a vehicle body, two painting devices are used which are independently arranged on both sides of the vehicle body and can move in a direction parallel to the direction of movement of the vehicle body.

However, when the painting devices are installed on both sides of the vehicle body, a wide painting booth is required, and when the painting devices are moved in a direction parallel to the conveyance direction of the vehicle body, one painting device is It is necessary to synchronize the operation of the other coating device with respect to the vehicle body, and in addition, independent drive devices are required for movement in the direction perpendicular to the transport direction of the vehicle body and in the vertical direction, resulting in a complicated configuration and control operation. I have no choice but to.

This invention was made in view of the above points,
The purpose is to simplify the structure, eliminate the need for synchronization in the movement parallel to the transport direction of the car body, and use a single drive device in the direction parallel to the transport direction of the car body. An object of the present invention is to provide an automatic painting device that can move in orthogonal directions and in vertical directions.

Next, a preferred specific example of the present invention will be explained based on the drawings.

In the figure, a pit 2 is formed in a painting bath 1, and a guide rail 3 is provided within the pit 2. The truck 4 is provided with wheels 5, and the wheels 5 are placed on the rails 3. The truck 4 is provided with a hydraulic motor 6.
Sprocket wheel 7 fixed to the output shaft of
and a sprocket wheel 9 fixed to the shaft 8 of the wheel 5 are connected by a chain 10.
When the motor 6 is activated, the shaft 8 is rotated via the chain 10, and as the wheels 5 rotate, the trolley 4 is
transported in the direction. An arm conveying device is composed of a truck 4, a motor 6, and the like. A hydraulic cylinder 11 as a lifting device is fixed to the truck 4, and a bearing 13 is provided at the tip of a piston rod 12 of the cylinder 11. A shaft 15 fixed to a connecting member 14 passes through the bearing 13. The rod 12 is connected to a connecting member 14 via a bearing 13 and a shaft 15.
is swingably connected to. The connecting member 14 is the base 1
When the cylinder 11 is actuated and the rod 12 moves up and down in the B direction, the base 16 similarly moves up and down in the B direction. Support members 20, 21, 22, 23 that support guide rods 18 and 19 are fixed to the base 16, and arms 24 and 25 are provided on the rods 18 and 19, respectively, so as to be slidable in the C direction. There is. A hydraulic rotary actuator 2 is installed at the tip of the arm 24.
6 is attached to the case of the actuator 26, and a hydraulic rotary actuator 27 is attached to the case of the actuator 26. When the actuator 26 is actuated by applying hydraulic pressure, the case of the actuator 26 itself is rotated in the D direction about the axis 28, and as a result, the actuator 27 is also rotated about the axis 28 in a horizontal plane. A paint spray nozzle 30 is attached to the rotation shaft 29 of the actuator 27.
When hydraulic pressure is applied to the nozzle 30, the nozzle 30 rotates in the E direction along with the rotation of the rotating shaft 29. The nozzle 30 is thus swingably attached to the tip of the arm 24 via the actuators 26 and 27. Actuators 31 and 32 similar to actuators 26 and 27 are also attached to the tip of the arm 25, and a paint injection nozzle 33 is provided on the rotation axis of the actuator 32 so as to face the nozzle 30. There is. A hydraulic motor 34 is mounted and fixed on the base 16, and a sprocket wheel 3 is mounted on an output shaft 35 of the motor 34.
6 is installed. An endless chain 38 is stretched between the wheel 36 and a sprocket wheel 37 disposed opposite to the wheel 36, and the motor 34 is operated to drive the wheel 3.
6 rotates, the chain 38 is caused to run. The wheel 37 is connected to the support member 3 via the shaft 38a.
The support member 39 is rotatably supported by the base 16 . The arm 25 is the connecting member 4
0 to the upper side 41 of the chain 38, and the arm 24 is connected to the chain 38 through a connecting member 42.
When the chain 38 is run, the arms 24 and 25 are connected to the lower side 43 of the rod 18.
and 19, and then move in the c direction. The movements of arms 24 and 25 in direction c are in opposite directions. Rods 44 to 47 extending downward are attached to the four corners of the base 16.
-47 extend into through holes of guide members 48 and 49 (the other two are not shown) provided on the truck 4. A control cable support member 51 is attached to the side surface of the arm 24 via a bracket 50, and a chain 53 is connected to the support member 51 via a connection member 52.
is a pedestal 5 protruding from the base 16.
It is placed on 4. Nozzle 30, actuator 2
Hydraulic supply cables, paint supply cables, etc. to 6, 27, etc. are guided along the chain 53 from a position 55, introduced into the support member 51, and guided into the arm 24. The side of the arm 25 is similarly provided with a cable guiding mechanism, namely a control cable support member 57 supported by a bracket 56, a chain 58 and a pedestal 59. In the space between the nozzles 30 and 33 provided oppositely, a car body 60 of an automobile is placed, which is lifted from above and transported in the F direction by a transport device, for example, a trolley conveyor. For example, the lower side 6
1 and 62, the nozzles 30 and 33 are directed.

The automatic painting apparatus 70 configured as described above is operated as follows. The vehicle body 60 is moved to F by the conveyance device.
When the vehicle body 60 is set in the hem painting area in the painting booth, the transportation of the vehicle body 60 is temporarily interrupted and the vehicle body 60 is stopped at that position. In this state, the automatic painting device 70 first operates the motor 34 to move the arms 24 and 25 to c in order to paint the lower front 71 of the vehicle body 60, which is a part of the hem.
direction to bring the nozzles 30 and 33 closer to each other. When the nozzles 30 and 33 are set to a position where the center 72 of the lower part 71 can be painted, the motor 34 is reversed and the nozzles 30 and 33
Paint is sprayed from. The lower part 71 is painted in sequence, and then when moving from the lower part 71 to the lower parts 61 and 62 on the side, the motor 34 is gradually stopped, while the motor 6 is activated and the trolley 4 is moved in the opposite direction to the F direction. As a result, the nozzles 30 and 33 are also moved in the opposite direction to the F direction, and the lower parts 61 and 62 are sequentially painted. Furthermore, after painting the lower parts 61 and 62,
When moving to painting the lower part 74 of the rear surface as part of the hem, the motor 34 is operated so that the nozzles 30 and 33 approach each other in sequence, while the motor 6 is gradually stopped. When the painting of the center 75 of the lower part 74 is completed, the operation of the motor 34 is stopped, and the spraying of paint from the nozzles 30 and 33 is also stopped. If there are heights in the lower parts 71, 61, 62 and 74, the cylinder 11 is actuated to move the nozzles 30 and 33 up and down in the B direction, so that the nozzles 30 and 33 and the skirt always maintain a constant positional relationship. come to have. Further, the actuators 26, 27 and 31, 32 are operated corresponding to the surface of the hem so that the paint is supplied to the paint surface of the hem at a constant angle, and the nozzles 30 and 3
3. Controls the paint spray direction. When the painting of the lower part 74 is completed, the vehicle body 60 is transported in the F direction by the transport device. When the car body 60 is removed from the bottom painting booth, the motor 6 is activated, the trolley 4 is moved in the F direction and set to the initial position, and the automatic painting device waits until the next car body is brought in. nozzle 30,
33 paint injection, operation of motors 6 and 34, operation of cylinder 11, actuators 26, 27, 3
The operations 2 and 31 are performed automatically by storing a work program for the vehicle body 60 in advance in a storage device and sequentially reading out the work program. In addition, when painting the skirt parts of various car models, various work programs corresponding to the car models are stored in advance in the storage device, and a specific work program for the car model is selected and read out. The hem portion may be painted.

In the specific example described above, one nozzle is provided on each arm, but instead of this, a plurality of nozzles may be provided on each arm.

As described above, according to the present invention, since the pair of arms are movably provided on the base, there is no need for synchronization of the arms in the direction parallel to the vehicle body transport direction, and the structure can be simplified. and the work program can be simplified.

[Brief explanation of drawings]

FIG. 1 is a front view of a preferred example according to the present invention, FIG. 2 is a plan view of the example shown in FIG. 1, and FIG.
The figure is a detailed front view of the arm etc. shown in Fig. 1, Fig. 4 is a sectional view of the vicinity of the center of the base shown in Fig. 1, and Fig. 5 is an explanatory diagram of the operation of the specific example shown in Fig. 1. . 4...Dolly, 11...Hydraulic cylinder, 24,2
5... Arm, 30, 33... Paint spray nozzle.

Claims (1)

[Scope of utility model registration request] A pair of wheels located below the vehicle body being transported, movable in a direction perpendicular to the vehicle body transport direction, and connected by an endless chain so that one is moved in the opposite direction. and the arm of
A pair of painting nozzles that are swingably provided at the ends of the arms facing each other, an arm transport device that moves the pair of arms in a direction parallel to the vehicle body transport direction, and a paint nozzle provided on the arm transport device. , an automatic painting device consisting of a lifting device that moves a pair of arms up and down.