JPS5851971Y2 - Automobile side sill painting equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a side sill painting device that automatically paints a side sill extending longitudinally at the lower side of an automobile body.

Generally, when attempting to paint the side sills of an automobile separately from other parts, for example, black, manual spraying is inefficient and it is desirable to automate the process.

However, the above-mentioned side sill has a flange-shaped part bent inward of the vehicle body at its front and rear ends, and when painting these bent front and rear ends at the same time, this part must be removed. Simply spraying paint from the side of the vehicle body has the disadvantage that good painting cannot be achieved.

In view of this, the present invention paints the side parts of the side sills while moving along the sides of the car body in the longitudinal direction, and
To provide a side sill coating device for an automobile, which swings horizontally and wraps around the front and rear ends of the side sill, respectively, and continuously paints the front and rear ends.

Embodiments of the present invention will be described below with reference to the drawings.

In Figures 1 to 4, 1 is an automobile body whose side sill 2 at the lower center of the side surface is to be painted, and 3 is a carriage 4 on which the vehicle body 1 is placed, which is continuously conveyed by a drive means (not shown). A conveyor 5 is a paint machine that is placed on both sides of the vehicle body 1 (only one side is shown) and paints the side sill 2; 6 is a paint machine that moves the paint machine 5 in the moving direction (longitudinal direction) of the vehicle body 1;
A guide member 7 supported along the guide member 7 is a drive motor that moves the coating machine 5 along the guide member 6.

The coating machine 5 has a cylinder 9 attached to a table 8 which is placed on a guide member 6 and supported movably along the guide member 6, and a cylinder 9 is attached to the table 8 on the vehicle body 1 side near the table 8. Frame 1 holding the spray gun 10
1 is arranged, and the frame 11 has a center vertical pivot shaft 11 a and mounting frames 11 b and 11 C fixed above and below the pivot shaft 11 a and rotate together, and the upper mounting frame Spray guns 10.10 are fixed to the left and right sides of the cylinder 11b, and a support part 12a extending from the tip of the rod 12 of the cylinder 9 is connected to the central part of the frame 11, that is, the pivot shaft 11a, so that the rotating A shaft 11a is rotatably supported, and upper and lower mounting frames 11b of the frame 11,
11C is configured to be able to swing in the horizontal direction about the pivot axis 11a.

In addition, the lower mounting frame 11C has No. 10-
La 13 and 20th la 14 are attached.

The 10th roller 13 and the 20th roller 14 are installed at different heights; the first roller 13 located on the right in FIG. 2 is installed high, and the 20th roller 14 located on the left is installed low. It is being

A guide 15 is fixed to the table 8 parallel to the moving direction of the coating machine 5, that is, parallel to the guide member 6, and on the front surface of the guide 15, when the cylinder 9 is retracted, the 10th line 13 of the frame 11 is fixed. A 20th lug 14 is provided so as to abut and hold the frame 11 parallel to the guide 15.

Additionally, a traveling chain 16 is provided at the front and rear ends of the table 8.
The chain 16 is looped around sprockets (17 and 18) disposed before and after the guide member 6, and the drive motor 7 is connected to the rear sprocket 18, so that the drive motor 7 rotates in the normal direction. The table 8, that is, the coating machine 5, is moved along the guide member 6 in the same direction or in the opposite direction to the direction in which the vehicle body 1 is moved by the conveyor 3 by the reverse rotation drive.

Limit switches 19 a , 19 b , and 19 C are provided on the guide member 6 that supports the paint sprayer 5 at the starting position, the normal movement position, and the maximum movement position, respectively, and the table 8 has switches for operating these limit switches. contact plate 8
a is fixed.

Further, on the vehicle body 1 side of the guide member 6, a first stopper 20 is provided in the front along the guide member 6, and a second stopper 21 is provided in the rear from the center. It is formed by a plate mounted at a high position so that the tenth roller 13 can come into contact with it when it is in the position.

On the other hand, the second stopper 21 is formed of a plate extending along the longitudinal direction of the vehicle body 1 and attached at a low position so that the 20th roller 14 can come into contact with it when the paint sprayer 5 is located rearward from the center. has been done.

When the table 8 moves along the guide member 6 and is at a position corresponding to the front end 2a and rear end 2b of the side sill 2, the first stopper 20 and the second stopper 21
The tenth-ra 13 of the frame 11 due to the expansion of the cylinder 9
Alternatively, the coating machine 5 (table 8
), and the first stopper 20 is in the starting position of the conveyor 3.
, the length of the side sill 2, and the position of the rear end 2b of the side sill 2 determined by the moving speed of the sprayer 5, the length of the side sill 2, and the moving speed of the sprayer 5.

Further, 22 is a contact plate 4 protruding from the cart 4 of the conveyor 3.
23 is a phototube that detects whether the vehicle body 1 is placed on the truck 4; and the phototube 23 constitute a first detection means for detecting that the vehicle body 1 has come to the painting position.

Furthermore, although not shown, second detection means is provided which detects the stoppage of the conveyor 3 and issues a signal when the conveyor 3 stops.

The drive motor 7 moves the coating machine 5 (table 8) in the same direction as the moving direction of the vehicle body 1 and in the opposite direction, but when moving in the opposite direction (when painting the side sill 2), it The coating machine 5 is moved at two different speeds: the speed and the predetermined speed, which is further increased by the moving speed of the conveyor 3, and the switching is performed by a signal from the second detection means that detects the stoppage of the conveyor 3. Normally, the conveyor 3 is moved at a predetermined speed, and when the conveyor 3 is stopped, the speed is increased by the moving speed of the conveyor 3.

Next, to explain the coating action of the side sill 2, first, the automobile body 1 is placed on the trolley 4 of the conveyor 3, and when it is moved to the coating position at a predetermined speed, the limit switch 2
and a detection signal emitted when the first detection means including the phototube 23 detects that the vehicle body 1 has come to the painting position.
While the sprayer 5 remains stopped at the starting position, its cylinder 9 operates to extend the rod 12.

Therefore, the rotating shaft 11a of the frame 11 holding the spray gun 10 is pushed out toward the vehicle body 1, and the frame 11
are the first and 20th rollers 13 that are in contact with the guide 15.
, 14 try to move parallel to the vehicle body 1 side, but the 10th
- The movement of the frame 13 is regulated by coming into contact with the first stopper 20, and as shown by the chain line, the frame 11 swings to the right as it protrudes and moves away from the spray gun 10 whose spray direction has been changed. After the paint is sprayed around the flange-shaped front end 2a of the side sill 2, the frame 11 is moved backward due to the shortening of the cylinder 9, and the frame 11 is
The rubber 13 and the 20th rubber 14 are held in contact with the guide 15 so as not to move.

Next, by starting the drive motor 7, the paint machine 5 is moved at a predetermined speed along the longitudinal direction of the car body 1 in a direction opposite to the traveling direction of the car body 1, and the paint from the spray gun 10 that is continuously being sprayed is applied. Paint the side portion 2C of the side sill 2.

When the sprayer 5 reaches the rear end 2b of the side sill 2, the limit switch 19b is operated to stop the sprayer 5, and at the same time the cylinder 9 is operated to project the frame 11 toward the vehicle body 1.

In this case, the 20th lug 14 at the left end of the frame 11 comes into contact with the second stopper 21 and its movement is restricted, so that the frame 11 moves to the left as it protrudes, as shown by the chain line in the center. The spray gun 10 rotates and swings, changes the spray direction of the spray gun 10, goes around the flange-shaped rear end 2b of the side sill 2, and paints the side sill 2, thereby completing the painting of the side sill 2.

At this time, since the first roller 13 is provided at a higher position than the second stopper 21, it can pass above the second stopper 21 and swing without being restricted by the second stopper 21.

When painting is completed, the spraying of paint from the spray gun 10 is stopped, the cylinder 9 is shortened, the frame 11 is returned to its original position, and the drive motor 7 is reversed to move the paint sprayer 5 to the vehicle body 1.
The vehicle body 1 is moved in the same direction as the vehicle body 1 and returned to the starting position in preparation for the next vehicle body 1 to be transported.

On the other hand, when the conveyor 3 stops during painting, upon receiving a signal from the second detection means that detects the stop of the conveyor 3,
The drive motor 7 moves the coating machine 5 at an increased speed that is the normal predetermined speed plus the moving speed of the conveyor 3, and continues painting.

In this case, the stop position of the sprayer 5 is set by a timer.

That is, since the relative moving speed between the vehicle body 1 and the paint sprayer 5 is constant regardless of whether or not the conveyor 3 is stopped, the paint sprayer 5 moves to the rear end 2b of the side sill 2 from the start of painting. The arrival time is always constant, and this time is set with a timer, and when the timer is activated, the cylinder 9 is activated to swing the frame 11, and the direction of the spray gun 10 is changed to move the side sill 2. The rear end portion 2b is painted.

At this time, no matter where the paint sprayer 5 stops at any position corresponding to the rear end 2b of the side sill 2 due to a change in the stop timing of the conveyor 3, the second stopper 21
Since the frame 11 is extended in the longitudinal direction of the vehicle body 1 so as to be in contact with the frame 4, the frame 11 always swings in the horizontal direction.

Therefore, according to the side sill painting apparatus of the present invention as described above, a table that is moved by a drive motor is provided on the guide member disposed in the longitudinal direction of the vehicle body, and the frame holding the spray gun is attached to the table in the horizontal direction via the cylinder. First and second stoppers are provided so as to be able to swing freely and come into contact with one end of the frame, and when the table moves to the front and rear ends of the side sill, the frame and the first or second This is because the frame is swung by contact with the stopper and goes around the front and rear ends of the side sills to paint, while the table moves along the longitudinal direction of the vehicle body to paint the side parts of the side sills. The front and rear ends, which are provided in the form of flanges at the front and rear ends of the side sills, can be coated with good quality by changing the spraying direction of the spray gun, and the front and rear ends and the side parts can be painted continuously. With a simple mechanism and control, it is possible to perform side sill painting with good workability and good quality.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and Fig. 1 is an overall side view, Fig. 2 is a partially omitted plan view, and Fig. 3 is II of Fig. 2.
A sectional view taken along the line I-III, FIG. 4 is a cross-sectional view taken along the line IV-
It is an arrow view along the IV line. 1... Automobile body, 2... Side sill, 2a... Front end, 2b... Rear end.
2C...Side part, 3...Conveyor, 4
...Truck, 5...Painting machine, 6...
...Guide member, 7... Drive motor, 8...
...Table, 9...Cylinder, 10...
... Spray gun, 11 ... Frame, 11 a
...Rotating axis, 11 b, 11 C...
Mounting frame, 12...Rod, 13...10th la, 14...20th la, 15...
...Guide, 16...Chain, 17.18.
...Sprocket, 19a. 19b, 19C...Limit switch, 20.
...First stopper, 21...Second stopper, 22...Limit switch, 23...
...Phototube.

Claims (4)

[Scope of utility model registration request] (1) A guide member is arranged in the longitudinal direction of the car body on the side of the car body where the side sill is to be painted, and a table that moves in the longitudinal direction of the car body by a drive motor is placed on the guide member to hold the spray gun. A frame is placed close to the table, a cylinder is attached to the table, and the rod of the cylinder is connected to the center of the frame so that the frame can swing horizontally. A first stopper and a second stopper are arranged so as to be able to come into contact with one end of the frame when the table is at a position corresponding to the front and rear ends of the side sill, and when the table moves to the front and rear ends of the side sill. When the frame comes into contact with the first stopper or the second stopper due to the operation of the cylinder, the frame swings and paints the front and rear ends of the side sill, while the table moves along the longitudinal direction of the vehicle body, painting the side of the side sill. An automobile side sill painting device characterized in that it paints both sides. (2) The first stopper and the second stopper are provided with a step in the vertical direction, the second stopper is constituted by a plate extending in the longitudinal direction of the vehicle body, and the table position on the guide member corresponding to the rear end of the side sill is A side sill painting device for an automobile according to claim 1, wherein one end of the frame is allowed to come into contact with a second stopper even when the frame changes, and the frame is swung horizontally by the operation of a cylinder. . (3) The automobile side sill painting apparatus according to claim 1 or 2, wherein rollers are provided at both ends of the frame. (4) The automobile side sill painting apparatus according to claim 1 or 3, wherein the table has a guide for holding the frame so that the frame does not swing when the table is moved.