JPH0446626B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automatic coating apparatus for structures that automatically coats box-shaped objects such as marine containers.

BACKGROUND ART A case will be described in which, for example, a marine container is painted using a prior art painting method. FIG. 10 is a sectional view of the side wall 1 of the marine container. The side wall 1 of the marine container has a horizontal cross section as shown in FIG. When paint is injected onto such a side wall 1 from a nozzle 3 having a horizontal axis 2, a coating film having an appropriate thickness is obtained on the valley surfaces 4 perpendicular to the horizontal axis 2, but the coating film with an appropriate thickness is obtained on the sloped surfaces 5 and 6. The coating becomes thinner. Further, when the nozzle 8 having the axis 7 is used to spray the paint, even though the thickness of the paint film on the valley faces 9 and 10 is appropriate, the paint film on the slope face 11 becomes thinner. If the thickness of the coating film on the sloped surfaces 5, 6, and 11 is set to an appropriate value, the thickness of the coating film on the valley surfaces 4, 9, and the sloped surface 10 will become thicker, and therefore unnecessary paint will be required. It became a matter of fact.

Problems to be Solved by the Invention In order to paint a wall surface having such a structure and shape with less variation in the thickness of the paint film, skilled workers have to manually paint the wall surface. However, in recent years,
In addition to the lack of skilled workers, the working environment in such painting fields is extremely poor, forcing workers to work under adverse conditions.

An object of the present invention is to solve the above-mentioned problems and automatically paint a box-shaped object to be painted, including a ceiling, side walls, and front and rear end walls in the direction of movement, with little variation in the thickness of the paint film. An object of the present invention is to provide an automatic painting device for structures that can coat structures.

Means for Solving the Problems The present invention provides an automatic painting apparatus for a structure having a pair of parallel corrugated side walls, a ceiling, and a pair of end walls in which a mountain surface and an inclined surface are periodically repeated. means for connecting and moving structures at intervals in one direction; a pair of legs extending across the structure, facing the side wall and along a linear ridgeline of the side wall; a gate-shaped frame having a connecting part that connects the legs; and a guide member that is movable along the connecting part and hangs downward from the connecting part; and on both sides of the movement path of the structure by the moving means. a rail installed on the side, extending perpendicularly to the ridge line, and movably guiding the portal frame; a movable body provided on the leg and capable of reciprocating along the leg; a first nozzle having an axis directed toward the ridgeline of the mountain of the side wall; disposed on the movable body at a distance from the first nozzle along the moving direction of the portal frame;
a second nozzle having an axis directed toward the ridgeline of a valley deviated from the ridgeline of the mountain by a multiple of one and a half periods; a ceiling moving body provided at the connecting portion of the gate-shaped frame and movable along the connecting portion; a third nozzle provided on the ceiling moving body and having an axis directed toward the ridgeline of the mountain on the ceiling; and a third nozzle disposed on the ceiling moving body at a distance from the third nozzle along the moving direction of the portal frame. , a fourth nozzle having an axis directed toward the ridgeline of the valley that is deviated from the ridgeline of the mountain by a multiple of one and a half periods; a moving body for end wall painting that is provided on the guide member and is movable along the guide member; A fifth component provided on the end painting moving body and having an axis directed toward the ridgeline of the mountain of the end wall of one structure.
a nozzle arranged on the end wall painting moving body at a distance from the fifth nozzle along the moving direction of the guide member, and deviated from the ridgeline of the mountain of the one structure by a multiple of one and a half periods; a sixth nozzle having an axis directed toward the ridgeline of the valley; and a sixth nozzle provided on the end wall painting moving body and having an axis directed toward the ridgeline of the mountain of the end wall of another structure adjacent to the one structure. 7 nozzles, arranged on the end wall painting moving body at intervals from the seventh nozzle along the moving direction of the guide member, and one and a half periods from the ridgeline of the mountain of the another adjacent structure. and an eighth nozzle having an axis directed toward the ridgeline of the valley shifted by a multiple of .

Effect According to the present invention, a structure having parallel corrugated side walls, a ceiling, and an end wall is straddled by a portal frame, and the legs of the portal frame are provided with a first nozzle and a second nozzle. A ceiling moving body is provided in which a third nozzle and a fourth nozzle are provided in a connecting part that connects the legs, and the ceiling moving body hangs downward from the connecting part and is movable along the connecting part. The guide member is equipped with an end wall painting moving body provided with a fifth nozzle, a sixth nozzle, a seventh nozzle, and an eighth nozzle. A plurality of structures are connected at intervals in one direction and moved by a moving means, and the gate-shaped frame is movable by rails 27 and 28 provided on the movement path of the structures. In this way, it becomes possible to automatically and efficiently paint multiple structures.

Embodiment FIG. 1 is a perspective view of an embodiment of the present invention,
FIG. 2 is a simplified horizontal sectional view thereof. Marine containers 20a, 20b, 20c to be painted
(hereinafter generally designated by reference numeral 20) is the concatenated body 2
1, 22, 23, and 24, and is moved in the direction of arrow 25 by a winch or the like. In this way, the container indicated by reference numeral 20b is carried into the painting booth 26.

Inside the painting booth 26, rails 27 and 28 are laid along the transport direction 25 of the container 20. The rails 27 and 28 are provided so that the gate-shaped frame 29 can reciprocate back and forth in the transport direction 25. The gate-shaped frame 29 straddles the container 20. The gate-shaped frame 29 has a pair of legs 30 and 31.
and a connecting portion 32 that connects them. One leg 30 is provided with a movable body 32 that is movable up and down in FIG. A first nozzle 33 and a second nozzle 34 are attached to this moving body 32. A horizontally extending elongated hole 35 is formed in the movable body 32, and a pin 36 is loosely engaged with the elongated hole 35. The pin 36 is fixed to an endless chain 37. This chain 37 connects sprocket foils 3 provided at the upper and lower parts of the legs 30.
8 and 39, and this sprocket wheel 39 is rotationally driven by a motor 40. Wheels 41 and 42 for moving along the rail 27 and wheels 41 and 42 are provided at the lower part of the leg portion 30.
A drive source for driving the is provided. The other leg portion 31 has a similar configuration.

FIG. 3 is a perspective view of the side wall 43 of the container 20 being painted by the first and second nozzles 33, 34, and FIG. 4 is a simplified horizontal sectional view thereof. The side wall 43 has a mountain surface 44, an inclined surface 45, a valley surface 46, and an inclined surface 47 in this order in the conveying direction 25.
is formed repeatedly. ridge line 48 of side wall 43;
54 is perpendicular to the transport direction 25 of the container 20, is vertical in the illustrated embodiment, and is parallel to the vertical movement direction of the first and second nozzles 33, 34.

The axis 4 of the first nozzle 33 is
9 is extended. The angles θ ₁ and θ ₂ formed by this axis 49 and the mountain surface 44 and the inclined surface 45 are equal. Also mountain surface 4
4, the width l2 of the slope 45, and the valley surface 46.
The width l3 of the inclined surface 47 is equal to the width l4 of the inclined surface 47. In this way, the paint sprayed from the first nozzle 33 along the axis 49 spreads as shown by reference numerals 51 and 52, and coats the mountain surface 44 and the inclined surface 45 with less variation in the thickness of the paint film.

The axis 53 of the second nozzle 34 extends toward the ridgeline 54 of the valley formed by the valley surface 46a and the inclined surface 47a.
The angles θ3 and θ4 formed by 7a are equal. As a result, a coating film with less variation in thickness is formed on the valley surface 46a and the slope surface 47a. The paint from the second nozzle 34 is spread out as indicated by reference numerals 55 and 56. At the side wall 43, θ1 = θ2 = θ3 = θ4.

In this way, a portion of the side wall 43 is painted by the first nozzle 33 and the second nozzle 34.
Thereafter, the first and second nozzles 33 and 34 are moved in one period W of the side wall 43 as the portal frame 29 moves.
and comes to the position indicated by reference numeral 32.
As a result, the first nozzle 33 comes to the position indicated by reference numeral 33a, so that the mountain surface 44b and the inclined surface 45b are painted, and the second nozzle 34
By coming to the position indicated by reference numeral 34a, the valley surface 46 and the slope surface 47 are coated with a uniform thickness.

A rack 59 is fixed to the rail 27 in order to allow the portal frame 29 to move freely in the transport direction 25. A pinion 60 meshes with the rack 59. This pinion 60 is rotationally driven around a vertical axis by a motor 61 attached to the leg 30.

A ceiling moving body 62 is provided at a connecting portion 32 that connects the legs 30 and 31 of the gate-shaped frame 29 along the connecting portion 32 so as to be movable horizontally and perpendicular to the transport direction 25 . A long hole 63 is formed in the ceiling moving body 62, and a pin 65 fixed to an endless chain 64 passes through the long hole 63. The chain 64 is wrapped around sprocket foils 66 and 67. One sprocket wheel 66 is driven by a motor 70, and thus the ceiling moving body 6
2 is driven. Third and fourth nozzles 68 and 69 are fixed to the ceiling moving body 62.

The ceiling 71 of the container 20 has a corrugated shape similar to the side wall 43, and has a structure in which a mountain surface, a slope surface, and a valley surface are repeated in the conveyance direction 25 at the same period as the side wall 43, and the positions of these ridges are are present in the same vertical plane along with the ridgelines 48 and 54 of the side wall 43, respectively.

The third nozzle 68 and the fourth nozzle 69 are in a vertical plane passing through the first nozzle 33 and the second nozzle 34, respectively. Therefore, while the container 20 is stationary, the gate-shaped frame 29 is moved in the transport direction 25 and the side walls 43 and 60 are painted, and at the same time the third
By the nozzle 68 and the fourth nozzle 69, the ceiling 7
1 can be painted.

Although the above description has mainly been made regarding one leg 30, the movable body 72 is also provided in relation to the other leg 31 so as to be movable up and down. First and second nozzles 73 and 74 are attached to this moving body 72, and the side wall 60 is painted.

FIG. 5 is a side view of this embodiment, FIG. 6 is a front view of the area shown in FIG. 5, and FIG. 7 is a plan view of the area shown in FIG. 6. A guide member 75 is provided in the connecting portion 132 so as to be movable horizontally along the connecting portion 132 . The upper end of the guide member 75
6. The movable body is provided with a pinion 78 that is rotationally driven by a motor 77. The pinion 78 meshes with a rack 79 installed along the connecting portion 132, thereby allowing the movable body 76 and the guide member 75 to travel.

An end wall painting movable body 80 is provided on the guide member 75 so as to be vertically movable up and down along the guide member 75 . The end wall painting moving body 80 includes a fifth nozzle 8.
2, the sixth nozzle 83, the seventh nozzle 84, and the eighth nozzle 85 are fixed. The fifth nozzle 82 and the seventh nozzle 84 have one common horizontal axis. Moreover, the sixth nozzle 83 and the eighth nozzle 85 are
They have one common horizontal axis. The moving body 80 is driven by a configuration similar to that of the moving body 32.

The end walls 87 and 88 of the container 80 have a corrugated shape with vertically extending ridge lines, and like the side wall 43 described above, the crests, slopes, and valleys are perpendicular to the conveyance direction, that is, the fifth It has a structure that repeats periodically in the left and right directions of the figure and FIG.
The fifth and seventh nozzles 82 and 84 and the sixth and eighth nozzles 83 and 85 have horizontal axes that extend toward the ridge lines of the corrugated end walls 87 and 88 that are shifted by one and a half periods.

Here, by the fifth and seventh nozzles 82, 84 and the sixth and eighth nozzles 83, 85, the seventh
Each end wall 87, 88 of one illustrated container 20 and another adjacent container 20 can be painted simultaneously, thereby increasing efficiency.

FIG. 8 is a block diagram showing the electric circuit of this embodiment. A motor 61 for moving the portal frame 29 is driven by a drive circuit 98. A processing circuit 100 realized by a microcomputer or the like has a target position setting device 101, and a current position detected by a position detector 102 and counted by a counter 103 with respect to a target position set here. The subtracter 104 calculates the difference between the two. In proportion to this difference, the drive circuit drives the motor 40 and the portal frame 29 moves. Through this control, the gate-shaped frame 29 stops when the difference between the target position and the current position becomes zero. Also the fifth
Guide member 75 for end wall painting explained with reference to the drawings
The configuration related to the gate frame 29 can also perform position control using a configuration similar to the configuration related to the gate-shaped frame 29.

Also, a coating number setting device 105 and a painting speed setting device 1
06 and the values set by the positioning interval setter 107 are set by the interfaces 108, 109,
The signal is input to the processing circuit 100 via 110.

At the start of painting, container 2 was placed inside booth 26.
0 is stopped as shown in FIG.

(1) In the gate-shaped frame 29, the end wall painting moving body 80 is detected by the limit switch Sβ1 and is located at the origin in the β direction.

(2) Gate-shaped frame 29 is limit switch SX
1 and is located at the origin in the X direction.

(3) Then move the gate frame 29 so that the magnetic proximity switch attached to the gate frame 29 is next to the container 20, and the end wall 8 of the container 20
8, set this position as XF0, and set this position as
Move the portal frame 29 to XF0.

(4) Next, move from XF0 to XF. This amount of movement can be calculated in advance from the dimensions of the portal frame 29 and the mounting position of the proximity switch.

(5) Move the moving body 76 to the first
Move to coating position βF1.

(6) The moving body 80 is moved up and down in the α direction shown in FIG. 5 at a set speed, and the end walls 88 and 87 are painted using the nozzles 82 and 83;

(7) After that, move the moving object 7 for the set positioning interval.
6 is moved in the β direction to a position βF2, and the moving body 80 performs painting movement in the α direction.

(8) In the same way, position βFn is set for the set number of times.
Painting is performed while moving the same distance at a time.

(9) When the painting at position βFn is completed, the moving body 76 is returned until it is detected by the limit switch Sβ1.

(10) Move the gate-shaped frame 29 to the first painting position X1 of the side walls 43, 60 and ceiling 71.
The amount of movement at this time is calculated in advance as a relative amount from position XF0.

(11) Moving body 6 in the Y direction and Z direction at this position X1
2, 32, and 72 are moved at a set speed to perform painting.

(12) After the painting is completed, move the gate frame 29 by the set interval and paint again at position X2.

(13) Repeat in the same manner, moving the same distance the set number of times, until painting at position Xm is completed.

(14) Painting position XR of the portal frame 29 on the end wall 87
move it to. This amount of movement is also calculated in advance from the relative position from position XF0.

(15) At this position XR, for painting the end wall 87,
As with the end wall 88 described above, the nozzle 82,
83 to start painting from position βR1, and paint at the set speed, number of times and intervals until the final position βRn.

(16) When the painting at position βRn is completed, the moving object 80
is returned until it is detected by limit switch Sβ1.

In this way, the marine container 20 having a corrugated surface can be automatically painted.

In this embodiment, the portal frame 29 is positioned
Although the painting is started by moving to XF0 and then to XF, as another embodiment, painting may be started from this position without being displaced from position XF0. The invention is practiced in connection with structures other than containers. In order to paint a corrugated shape, in the above-mentioned example, painting was performed while moving at an equal distance in one-and-a-half cycles, but the painting may be performed while moving at an equal distance in multiples of one-and-a-half cycles. .

Effects As described above, according to the present invention, a corrugated surface can be automatically painted. Therefore, a uniform coating film can be obtained over the entire surface. Therefore, the quality of the product can be improved and stabilized. Furthermore, the number of painting workers can be reduced, and painting costs can be reduced.
Moreover, since the entire surface can be coated with a uniform coating film, the entire surface can be made to have the target thickness, and the amount of paint used can be reduced. Paint workers are freed from a bad painting environment, and furthermore, unmanned painting becomes possible.

Furthermore, in the present invention, it is possible to automatically paint a plurality of structures moved by the moving means using the first to eighth nozzles, and especially the fifth to eighth nozzles.
The eighth nozzle allows the end faces of two adjacent structures to be painted simultaneously, improving painting efficiency.

[Brief explanation of the drawing]

1 is a simplified perspective view of the present invention, FIG. 2 is a simplified horizontal sectional view of an embodiment thereof, FIG. 3 is a perspective view of a portion of the side wall 43, and FIG. 4 is a sectional view of the side wall 43. , FIG. 5 is a front view of the portal frame 29, FIG. 6 is a side view of the portal frame 29, FIG. 7 is a plan view of the portal frame 29, FIG. 8 is a block diagram of the electric circuit, and FIG. is a plan view to explain the painting operation,
FIG. 10 is a sectional view of the side wall 1 for explaining the prior art. 20...Container, 29...Gate frame, 3
3,73...First nozzle, 34,74...Second nozzle, 44...Mountain surface, 45,47...Slope surface, 4
6...Valley surface, 48...Mountain ridgeline, 54...Valley ridgeline, 72,132...Moving object.

Claims (1)

[Claims] 1. In an automatic painting system for a structure having a pair of parallel corrugated side walls, a ceiling, and a pair of end walls that periodically repeat mountain faces and sloped faces, means for connecting and moving at intervals in the direction; a pair of legs extending across the structure, facing the side wall and along a straight ridge line of the side wall; a gate-shaped frame having a connecting portion to be connected, and a guide member movable along the connecting portion and hanging downward from the connecting portion; installed on both sides of a movement path of the structure by the moving means; a rail extending perpendicularly to the ridge line and movably guiding the gate frame; a movable body provided on the leg and capable of reciprocating along the leg; and a rail provided on the movable body and movable on the side wall. a first nozzle having an axis directed toward the ridgeline of the mountain; disposed on the movable body at a distance from the first nozzle along the moving direction of the portal frame;
a second nozzle having an axis directed toward the ridgeline of a valley deviated from the ridgeline of the mountain by a multiple of one and a half periods; a ceiling moving body provided at the connecting portion of the gate-shaped frame and movable along the connecting portion; a third nozzle provided on the ceiling moving body and having an axis directed toward the ridgeline of the mountain on the ceiling; and a third nozzle disposed on the ceiling moving body at a distance from the third nozzle along the moving direction of the portal frame. , a fourth nozzle having an axis directed toward the ridgeline of the valley that is deviated from the ridgeline of the mountain by a multiple of one and a half periods; a moving body for end wall painting that is provided on the guide member and is movable along the guide member; a fifth nozzle provided on the end wall painting moving body and having an axis directed toward the ridgeline of the mountain of the end wall of one structure; a sixth nozzle that is spaced apart from the fifth nozzle and has an axis directed toward the ridgeline of a valley that is shifted by a multiple of one and a half cycles from the ridgeline of the mountain of the one structure; a seventh nozzle that is provided and has an axis directed toward the ridgeline of a mountain on an end wall of another structure adjacent to the one structure; an eighth nozzle that is spaced apart from the seventh nozzle and has an axis that extends toward the ridgeline of a valley that is shifted by a multiple of one and a half periods from the ridgeline of the mountain of the another adjacent structure. Automatic painting equipment for structures with corrugated surfaces.