JPH0118781B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention particularly relates to a painting device for automatically painting the underside of a vehicle.

Conventionally, when painting the underside of a vehicle, a shaped material with a U-shaped or L-shaped cross section is often used for the vehicle frame, and since the underside of the vehicle has a complex uneven surface, it is especially difficult to paint the underside of the vehicle. Painting near the inside lower surface of the molded material became impossible or poor, and the equipment became complicated and the painting work became complicated in order to uniformly paint the entire surface.

In view of the above reasons, an object of the present invention is to provide a coating device for a vehicle that can uniformly and effectively apply paint to the underside of a vehicle, which has a complex uneven surface, thereby improving the coating effect and coating efficiency. It is.

Next, an embodiment of the present invention will be explained with reference to the drawings. In the drawing, P is a pit, S is a vehicle placed in parallel across the pit P, and 1 is a paint on the bottom surface of the vehicle S. Therefore, it is a trolley for the painting device T that is installed so as to be able to move back and forth in the longitudinal direction of the pit P, that is, in the longitudinal direction of the vehicle S. A frame 2 is installed in which supporting frames 2a to 2a are arranged in parallel at the center and rear, respectively, and inside the frame 2 on the upper surface of the truck 1 is connected to a paint supply device (not shown) via a hose 4. Pump 3 is installed.

Reference numerals 5A, 5B, and 5C are first, second, and third boards that are respectively arranged in parallel on the frame 2 along the upper surface of each support frame 2a, and are respectively arranged on the left and right wheels W, W of the vehicle S. The first board 5A is fixed to the upper surface of the support frame 2a at the front of the frame 2 and placed horizontally in the vehicle width direction, while the second board 5B and the third board The substrate 5C is connected via a connecting member 28 to the tips of pistons 6a, 6a of two air cylinders 6, 6, which are fixed in opposite directions to the upper surfaces of the support frames 2a at the center and rear parts of the frame 2, respectively. The second board 5B is placed horizontally so as to be slidable in the width direction of the vehicle S, and when both air cylinders 6 are ventilated and the piston 6a moves, the second board 5B is extended to the left in FIG. , while the third substrate 5C is extended to the right in the figure, when the piston 6a retreats, the second substrate 5B and the third substrate 5C are each retracted inward and held in parallel positions with the first substrate 5A. Ru.

7 to 7 are arms projecting apart from the sides of the respective substrates 5A to 5, and 8 to 8 are nozzle holders supported horizontally rotatably at the tips of the arms 7, respectively. Upper piece 8 with U-shaped cross section
a, a shaft rod 8b vertically installed below the upper piece 8a,
The upper piece 8a has a leg piece 8c which is connected to the lower end and has a substantially inverted L-shaped cross section.

Reference numerals 9 to 9 denote nozzles that are pivotally supported via pins 10 to the upper piece 8a of each nozzle holder 8, and in this example, are each supported via the nozzle holder 8 to the first base plate 5A. The four front row nozzle groups 9A, the second and third substrates 5B,
Two sets of rear nozzle groups 9B, each supported via a nozzle holder 8, are arranged in a dotted manner on the frame 2, and each controls the opening and closing of the flow path for the pump 3. The paint can be sprayed from the nozzle hole 9a opened at the upper end of each nozzle 9 in a substantially fan shape toward the lower surface of the vehicle S, and the second and third substrates 5B and 5C are connected to each other on both sides When extended in the direction, the entire width of the lower surface of the vehicle S can be painted.

Reference numeral 11 denotes an air cylinder attached upward to the lower end of the leg piece 8c of each nozzle holder 8, and a connecting member 29 provided at the tip of each piston 11a connects the nozzle 9 to the center of the nozzle 9. The air cylinders 11 are interlockably connected to each other via protrusions 9b protruding from the vicinity.
When the piston 11a is moved forward and backward with ventilation, each nozzle 9 swings about the pin 10 in an oscillating manner, and the nozzle hole 9a reciprocates in an arc-shaped movement trajectory (see Fig. 5). The coating area of the paint sprayed from 9a is expanded.

Reference numerals 12 to 12 denote air rotors respectively attached to the nozzle 9 side end faces of the central portions of the respective substrates 5A to 5C, and connecting members 1 are respectively attached to the rotor shafts 12a.
3 to 13 are fitted, and when each air rotor 12 is driven, each connecting member 13 is horizontally rotated left and right within a range of about 90 degrees.

Reference numerals 14 to 14 denote levers 1 fitted to each connecting member 13 and the shaft rod 8b of each nozzle holder 8, respectively.
5 to 15 are interlocking rods arranged in parallel on the left and right parts of the first board 5A, the left part of the second board 5B, and the right part of the third board 5c, respectively, for interlockingly connecting the boards 5 to 15, When each air rotor 13 rotates, each nozzle 9 is approximately rotated through each interlocking rod 14.
It is horizontally rotated within a range of 90 degrees (see FIG. 6), and the direction of swing of each nozzle 9 can be switched to the longitudinal direction or the width direction of the vehicle S.

Reference numerals 16A and 16B are front and rear obstacle sensing antennas fixed to the left front end and right rear end of the upper end of the frame 2, respectively, and extended laterally in opposite directions. antenna 1
6A detects the approach to the wheel W, both air cylinders 6 are actuated by this detection signal, and the pistons 6a in the forward position move backward, and the second,
Along with the third substrates 5B and 5C, the rear row nozzle group 9B
passes between the wheels W on both sides while being displaced inward, while the nozzle group 9B in the rear row passes between the wheels W on both sides.
When the passage is detected, both pistons 6a in the backward state move forward in response to the detection signal from the antenna 16B, and the nozzle group 9B in the rear row is separately displaced to both sides, so that the bottom surface of the vehicle S is The outer parts of the wheels W on both sides are respectively opposed to each other, and these outer parts are painted by the nozzle group 9B in the rear row.

In the middle of the path of the painting device T, when the painting device T passes below the vehicle S, this passage is detected, the traveling direction of the painting device T is reversed, and each of the air rotors 12 is rotated. A detection device (not shown) that sends a detection signal to rotate the swing direction of each nozzle 9 by approximately 90 degrees, a detection device (not shown) that sends a signal to control the opening and closing of the flow path to each nozzle 9, etc. will be placed.

Next, the operation and effects of the embodiment having the above configuration will be explained.

First, when painting the lower surface of the vehicle S, the bogie 1 moves inside the pit P with the pistons 6a of both air cylinders 6 moving and the second and third boards 5B and 5C extending to both sides. When the nozzle group 9A in the front row reaches the position below the vehicle S after driving forward,
The flow path to each nozzle 9 is opened, and the air cylinder 11 is operated to start swinging each nozzle 9 in the vehicle length direction or vehicle width direction and to start spraying paint from each nozzle hole 9a. Furthermore, the front row nozzle group 9
When A reaches near the wheel W, the pistons 6a of both air cylinders 6 are retracted by the detection signal from the front antenna 16A, and the rear nozzle group 9B is displaced inward, causing the nozzle groups in the front and rear rows to 9A and 9B pass between the wheels W on both sides, and after passing, the rear antenna 16B
The piston 6a of the air cylinder 6 moves in response to the detection signal, and the nozzle group 9B in the rear row is again displaced to both sides and returns to its original position, and the above-mentioned operations are repeated every time the wheel W passes. When the coating device T passes below the vehicle S, the traveling direction of the trolley 1 is reversed by the detection device, each air rotor 12 is activated, and each nozzle 9 is rotated approximately 90 degrees to each The rocking direction of the nozzles 9 is switched, and on the return trip of the bogie 1, each nozzle 9 moves in the vehicle length direction while swinging in a direction that is 90 degrees rotated from the rocking direction of the bogie 1 on the outbound trip. The nozzle group 9B repeats the displacement operation in the vehicle width direction in the same way as on the outward journey, and the coating device T is returned to its original position.

Therefore, the automatic coating operation of each nozzle 9 on the lower surface of the vehicle is performed smoothly, the lower surface of the vehicle S is effectively painted, and the coating efficiency can be improved.

In particular, each nozzle 9 moves while swinging, and the direction of swing can be switched between the vehicle length direction and the vehicle width direction. The paint can be applied uniformly and effectively to the vicinity of the underside of the vehicle, and has the advantage of significantly improving the coating effect on the entire underside of the vehicle.

Moreover, since the rear row nozzle group 9B can be displaced in the vehicle width direction depending on the presence or absence of an obstacle during movement, the outer parts of both wheels W on the lower surface of the vehicle S can be reliably painted.

That is, the present invention provides a frame that is movably disposed below a vehicle to be painted, and has nozzles arranged in a dotted manner to spray paint toward the underside of the vehicle. The group is swingably supported so that the nozzle holes of each nozzle are reciprocated in an arc shape during paint spraying, and the swing direction of each nozzle is aligned with the longitudinal direction of the vehicle. By providing a switching means for turning in the width direction, the coating effect and coating efficiency on the underside of the vehicle can be improved, so this invention is extremely excellent as a coating device for a vehicle.

In the above embodiment, the vehicle is stopped and the coating device is moved, but the coating device may be fixed and the vehicle moved.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall perspective view, FIG. 2 is a plan view of the coating device, and FIG.
The figure is also a rear view, Figure 4 is a side view, and Figure 5 is a side view.
The figure is an enlarged side view of the nozzle, and FIG. 6 is a plan view as well. 2... Frame, 9... Nozzle, 9a... Nozzle hole, 12... Air rotor, S... Vehicle, T...
Painting equipment.

Claims (1)

[Claims] 1. A frame that is movably disposed below the vehicle to be painted relative to the vehicle has a group of nozzles arranged in a dotted manner for spraying the paint toward the underside of the vehicle. The nozzle hole of each nozzle is supported so as to be swingable so as to be reciprocated in an arc shape during the spraying, and
A coating device for a vehicle, characterized in that a switching means is provided for rotating the rocking direction of each nozzle between a vehicle length direction and a vehicle width direction of the vehicle.