JPH0747314A - Automatic coating equipment for long steel materials - Google Patents

Abstract

(57) [Summary] [Purpose] To continuously and automatically paint long steel materials. [Structure] The I-shaped steel 2 conveyed in the length direction along the pass line 1 by the conveyance carriages 5A to 5C is detected by the steel material shape detector 9 and the stiffener detector, and is moved to the coating chamber 12 shielded by the air curtain. Then, the I-shaped steel 2 is coated by the coating devices 13A and 13B having a plurality of coating guns which are driven by the control device 81 based on the detected values. [Effect] It is possible to handle various types of long steel materials with different cross-sectional shapes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating facility for automatically coating a long steel material such as a H-shaped steel or an I-shaped steel to which a reinforcing material such as a stiffener or a protrusion is attached.

[0002]

2. Description of the Related Art Conventionally, as a facility for automatically coating a long material, a plurality of coating guns are arranged at predetermined positions around the pass line of the long material, and the long material is lined along the pass line. While moving, the paint was sprayed from multiple coating guns to coat the outer surface of the long material. On the other hand, there is a method in which a plurality of painting guns are attached to a dolly that can move along a long material, and the dolly is run along the long material while spraying paint from the painting gun to perform painting.

[0003]

However, in the above coating equipment, there is no problem when coating long materials of the same shape, but when coating long materials of various sizes, the type Each time it changed, the position of the painting gun and the injection direction had to be set, which was not suitable for painting a wide variety of products.
In addition, if a protrusion is attached to the long material,
There was a problem that it could not be painted because it interferes with the painting gun.

The present invention solves the above-mentioned problems and provides an automatic coating facility for long steel materials which can be applied to various kinds of long steel materials in good condition and can be applied even if there are protrusions. The purpose is to do.

[0005]

In order to solve the above problems, the automatic coating equipment for long steel materials according to the present invention is provided with a conveying device for moving the long steel materials in the longitudinal direction along a path line, On the inlet side of the pass line, a steel material shape detector that detects the cross-sectional dimension of the long steel material and a protrusion detector that detects the protrusion attached to the long steel material are arranged, and on the outlet side of the pass line. A coating room with a shielding device that allows the passage of long steel materials and prevents the release of paint particles in the air is arranged, and multiple coating guns can be raised and lowered freely on both sides of the pass line in this coating room. Arrange a pair of left and right coating devices provided, and operate the coating gun of the coating device based on the signals from the long steel position detector, the steel shape detector, and the protrusion position detector provided on the transfer device. Put the painting gun on the long steel side. Movement and is vertically movable, is provided with a control device for operating the conveying device further.

Further, the coating gun of the coating apparatus having the above structure is
A coating gun for the coating device, a coating gun for the upper surface that is placed on the top and sprays the coating onto the long steel material from diagonally above,
It is composed of a side coating gun that is located in the middle part and sprays paint from a horizontal direction on the long steel material, and a bottom surface coating gun that is located below and sprays paint onto the long steel material from diagonally below. The upper surface coating gun, the side surface coating gun, and the lower surface coating gun are arranged in a vertical plane orthogonal to the pass line, and the spray directions of the respective coating guns intersect at one point in the vertical plane. It is arranged.

Further, the side coating gun is rotatable about a horizontal axis.

[0008]

In the above construction, the long steel material which is moved in the length direction along the path line by the conveying device has the sectional shape and dimension of the long steel material detected by the steel material shape detector at the inlet side, and the protrusion The detector detects the size and position of the member attached to the long steel material, and these detection data are input to the control device. Furthermore, the long steel material is moved into the coating chamber, and is coated with the paint sprayed from the coating gun of the coating device.The control device operates the transport device to control the moving speed of the long steel material and The start and stop, movement, and injection direction are controlled, and the outer surface of the long steel material is coated evenly. Further, even if there is a protrusion, the coating gun can be retracted by the signal from the protrusion detector, so that coating is possible.

According to the above construction, since the position of the coating gun can be controlled corresponding to various kinds of long steel materials, the coating can be performed well and the coating can be performed in the coating chamber shielded by the shielding device. Therefore, the working environment is not deteriorated. Further, even if there is a protrusion on the long steel material, the coating gun can be reliably retracted.

Further, by arranging the upper surface coating gun, the side surface coating gun and the lower surface coating gun in the same vertical plane such that the spray directions intersect at one point on the vertical plane, the upper surface coating gun is arranged. And the lower surface coating gun by projecting or retreating, coating the upper and lower surfaces of the flange of, for example, I-shaped steel horizontally extended with a long steel material at one time, and further moving the side surface coating gun up and down following the operation. Then, by coating the side surface of the long steel material, for example, a web of I-shaped steel, and further continuously coating the upper and lower surfaces of the flange at the same time by the backward movement or the protruding movement of the upper surface coating gun and the lower surface coating gun, I-type steel and H-type steel can be coated over the entire circumference from both side surfaces by extremely simple continuous operation.
Therefore, continuous coating can be easily performed in a state where the long steel material is moved, and work efficiency is good, and thus the program of the drive unit and the control unit of the coating apparatus can be greatly simplified. In addition, the top coating gun and the bottom coating gun are tilted so that the paint is sprayed at an angle of inclination with respect to the coating surface. It can be placed and painted, and interference with protrusions attached to the long steel material can be reduced.

Furthermore, by tilting the side coating gun rearward, it is possible to coat the front surface of a reinforcing material or a protrusion such as a stiffener attached between flanges of I-shaped steel, and the side coating gun forward. The rear surface of the reinforcing material or the protrusions can be coated by inclining to, and it is possible to cope with various shapes of long steel materials to which the reinforcing material or the protrusions are attached.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an automatic beam coating facility according to the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a pass line for carrying an I-type steel (long steel material) 2 in the length direction for coating, and a floor surface 3 along the pass line 1
A conveying device 6 for moving a long steel material by a plurality of conveying carriages 5A to 5C which are movable by being guided by a pair of left and right traveling rails 4 laid on the vehicle. Then, in order from the inlet side of the pass line 1, the long steel material carrying-in portion 7, the area sensor 8 for judging whether or not the I-shaped steel 2 is within a prescribed size, and the steel material shape detector (protrusion detection for detecting the size of the I-shaped steel 2). (Combined with equipment) 9, coating room 12 equipped with a shielding device 11 that allows passage of the I-shaped steel 2 and prevents the release of paint particles in the air,
A pair of left and right coating devices 13 provided in the coating chamber 12
A, 13B and the long steel material carrying-out part 14 are arranged, respectively.

As shown in FIG. 3, the I-shaped steel 2 has an I-shaped cross section in which upper and lower flanges UF and DF are attached to the upper and lower sides of the web W, and is a reinforcing material between the upper and lower flanges UF and DF at predetermined positions. The stiffener S is attached.

The details of the automatic beam coating equipment will be described below. The transport device 5 includes transport vehicles 4A to 4C and a travel drive device 21 that drives the leading transport vehicle 5A. The travel drive device 21 is provided at the exit end of the pass line 1. The drive sheave 23 rotated by the traveling motor 22, the passive sheave 24 arranged on the floor surface 3 of the long steel carrying-in portion 7 of the traveling rail 3, and the drive sheave 23 and the passive sheave 24 wound around both ends. And a driving wire rope 25 connected to the leading carriage 4A. Further, a position detector 26 composed of a rotary encoder is provided on the drive shaft of the traveling motor 22 to detect the moving distance of the carriage 4A, that is, the position of the I-shaped steel 2. In addition, the carrier vehicles 4A to 4
As shown in FIG. 3, in C, traveling wheels 28 guided by traveling rails 4 are rotatably arranged at four corners of a carriage main body 27, and a plate along a pass line 1 is provided at a central portion of the carriage main body 27. A mounting table 30 is provided via a vertical plate 29.

As shown in FIG. 4, the area sensor 8 has a vertical height photoelectric detection which forms a detection area 32 in a certain range on both sides of a gate-shaped frame 31 surrounding the pass line 1 via a mounting member 31a. Devices 33U and 33D and left and right width photoelectric detectors 33R and 33F are provided to prevent the I-shaped steel 2 having an unspecified size exceeding the detection area 32 from being carried in.

The steel material shape detector 9 is, as shown in FIG.
A sensor mounting arm 35 is provided so as to protrude from the lower portion of the pillar 34a of the gate-shaped frame 34 surrounding the pass line 1,
The upper and lower flanges UF of the I-shaped steel 2 arranged on the sensor mounting arm 35 and the ceiling frame 34b facing the sensor mounting arm 35,
It is composed of a photoelectric width detector 36 for detecting DF and a photoelectric height detector 37 for detecting the height of the I-shaped steel 2 arranged on both columns 34a, and attached to the I-shaped steel 2 by continuous detection. The generated protrusions can also be detected. In addition, the stiffener S is attached to the lower portion of the photoelectric height detector 37 of the column 34a.
An ultrasonic stiffener detector 10 for detecting the position of is placed.

As shown in FIG. 3, the coating chamber 12 provided with the shielding device 11 is provided with a cover body 39 for covering the traveling rail 4 and the carriage main body 27 of the transport carriages 4A to 4C traveling on the traveling rail 4. Passing slit 39 through which vertical plate 29 can pass
A flexible seal plate 40, which is in sliding contact with the vertical plate 29, is attached to a. Further, a shielding device 11 composed of an air seal device for forming an air curtain is provided at each of the inlet and the outlet of the I-shaped steel 2 to prevent diffusion of paint particles scattered during coating. Furthermore, a filter 4 for removing paint particles from the air in the coating chamber 12 and discharging only clean air
2 and an exhaust fan 43 are provided.

The pair of left and right coating devices 13A and 13B arranged in the coating chamber 12 are arranged on both sides of the pass line 1 with a slight displacement in the carrying direction, and have the same structure. As shown in FIGS. 6 to 10, the coating device 13 approaches the I-shaped steel 2 by being guided by a pair of left and right guide rails 52 arranged horizontally on the base 51 perpendicular to the pass line 1. Elevator box 53 that can be separated
And a retracting cylinder device 54 that moves the elevator box 53 along the guide rails 52, a working arm 56 that is driven up and down by a lifting cylinder device 55 arranged in the elevator box 53, and a tip portion of the working arm 56. It is equipped with three coating guns 57, 58, 59 provided in the.

That is, on the base 51 installed on the floor 3 in the coating chamber 12, guide rails 52 are provided so as to project from the inner surfaces facing each other. The upper and lower rollers 61 and 62 arranged at the four corners of the bottom surface of the elevator box 53 are brought into contact with the upper and lower surfaces of the guide rail 52, and the side rollers 63 are brought into contact with the end surfaces of the guide rail 52 to move the elevator box 53. Guided freely. Then, the retracting cylinder device 54 is attached to one side of the base 51, and the piston rod is connected to the lower portion of the elevator box 53, so that the elevator box 53 can be moved in and out of the I-shaped steel 2.

A pair of left and right lifting rails 64 are disposed on one side surface inside the elevator box 53, and a lifting body 66 is mounted on the lifting rails 64 via lifting rollers 65.
Is arranged so that it can be raised and lowered. And this lifting body 66
The piston rod 55a of the lifting cylinder device 55 disposed in the elevator box 53 is connected via a connecting member, and the piston rod 55a is vertically movable in a lifting slit 68 formed in one side surface of the elevator box 53. The work arm 56 is supported via the fitted support member 69.
There is. 67 is a balance weight which is connected to the lifting body 66 via a turning sheave 67a by a rope 67b.
Reference numeral 0 denotes an endless belt-shaped sealing material whose both ends are connected to the support member 69, which is guided by a plurality of guide rollers 71 arranged in the elevator box 53 and is movably wound around the support member 69 so as to move up and down. The opening / closing portion of the lifting / lowering slit 68 that fluctuates with the above is covered to prevent paint particles from entering the inside.

At the tip of the working arm 56, as shown in FIGS.
As shown in FIG. 0, the upper surface coating gun 57 is disposed at the upper portion and sprays the coating material on the upper surface of the flange UF at an angle of 45 ° obliquely from above, and the web W disposed at the intermediate portion.
A side coating gun 58 for horizontally spraying the paint from the side and a bottom coating gun 59 arranged at the bottom for spraying the paint from the side at an angle of 45 ° from the lower side of the flange DF are respectively arranged. ing. The coating guns 57, 58, 59 are arranged in the same vertical plane orthogonal to the pass line 1, and the spraying direction of each coating gun 57, 58, 59 is the intersection point P in the vertical plane.
It is set to intersect at. Further, among the coating guns 57, 58, 59, the upper surface coating gun 57 and the lower surface coating gun 59 can freely move in and out of the I-shaped steel 2 side, and the intersection point P of the spraying direction is the spraying direction of the side coating gun 58. It is configured to be movable along. The side coating gun 58 is rotatable back and forth about the vertical axis by 45 ° in the range of 90 °, and the front and rear faces of the stiffener S attached to the I-shaped steel 2 can be coated.

That is, the casing 5 of the working arm 56
A gun mounting portion 56b is provided so as to project from the front portion of the front end of 6a, and a vertical shaft 72 is rotatably arranged in a support hole penetrating the gun mounting portion 56b in the vertical direction. This vertical axis 7
A side coating gun 58 is attached to the upper end of 2 via a gun bracket 73, and a gun attaching portion 56 of the vertical shaft 72 is attached.
A rotating arm 74 is fixed in b. A rotating cylinder device 75 is arranged on the tip side of the casing 56a, and a piston rod of the rotating cylinder device 75 is pin-connected to the tip of the rotating arm 74. Therefore, by expanding and contracting the rotating cylinder device 75, the vertical shaft 72 is rotated through the rotating arm 74, and the side surface coating gun 58 is rotated forward and backward about the vertical shaft 72 in the range of 90 ° by 45 °. The injection direction can be changed back and forth by rotating with.

Further, on the rear side of the casing 56a, there is provided a rodless cylinder 76 for moving in and out, which moves along three guide rods 76a arranged in the horizontal direction. The top and bottom painting gun 5 is connected to the tip of a retractable rod 77 that is connected to the cylinder 76 and penetrates the casing 56a and projects forward through upper and lower gun support rods 78U and 78D bent in a crank shape.
7 and the lower surface coating gun 59 are mounted at an angle of 45 ° in the same vertical plane including the side coating gun 58. Therefore, by moving the rod rod cylinder 76 for moving in and out along the guide rod 76a, the coating gun 57 for upper surface and the coating gun 59 for lower surface are moved in and out.
It can be moved in and out via the upper and lower gun support rods 78U and 78D.

To this automatic beam coating device, the detection signals of the position detector 26, the area sensor 8, the steel shape detector 9 and the stiffener detector 10 of the I-shaped steel 2 are input, and the conveying device is based on these signals. 6, the transfer motor 22 of 6, the retracting cylinder device 54 of the coating devices 13A and 13B, the lifting cylinder device 55, the rotating cylinder device 75, the rod rod cylinder 76 for retracting / retracting, the coating guns 57, 5
A control device 81 for operating 8, 59 is provided.

Next, the coating work by this automatic beam coating device will be described. (1) The I-shaped steel 2 is carried into the long-steel material carrying-in section 7 using a crane or the like, and the front end (and the middle part) and the rear end of the I-shaped steel 2 are respectively transferred by the carriages 5A, 5B (, 5C). It is supported on the mounting table 30.

(2) The traveling motor 22 of the carrier device 6 is activated to move the leading carrier vehicle 5A via the drive wire rope 25, and the I-shaped steel 2 is moved to the exit side along the pass line 1. Then, the area sensor 8 confirms whether the I-shaped steel 2 and the members attached to the I-shaped steel 2 are within the detection area 32, and then the steel shape detector 8 detects the height of the I-shaped steel 2 and the upper and lower flanges UF, DF. Width of
Further, the mounting position of the stiffener S is detected and input to the control device 81. At the same time, the steel material shape detector 8 detects a protrusion provided on the I-shaped steel 2.

(3) When the I-shaped steel 2 enters the coating chamber 12, an operation signal is output from the control device 81 to the carrier device 6 and the two coating devices 13A and 13B based on the input detection data, and each coating is performed. The paint is sprayed from the guns 57, 58, 59 toward the I-shaped steel 2 to sequentially coat the outer surface of the I-shaped steel 2. In addition, the I-shaped steel 2 has a protrusion, and the coating gun 5
If there is any contact with 7, 58, 59, the elevator box 53 is retracted by the retracting cylinder device 55 at the position where the protrusion approaches and the coating gun 57, 58,
59 is retracted.

(4) Further, when the coating material is moved from the coating chamber 12 to the long steel material unloading portion 14 and the coating is completed, it is carried out from the transport carriages 5A, 5B, 5C by a crane or the like.

Next, an example of the coating procedure for this I-shaped steel 2 is shown in FIG.
1 (A) to (C) and FIGS. 12 (A) to (D). First, in a portion where the stiffener S is not provided, coating is performed while the I-shaped steel 2 is moved by the conveyor 6 at a predetermined speed.

(A) As shown by the solid line in FIG.
The work arm 56 is raised to make the side surface coating gun 58 face the upper flange UF, and the upper surface and lower surface coating guns 57, 59 are retracted, and the upper surface and lower surface coating guns 57, 59 are activated. Then, paint is sprayed on the upper flange UF, and the rodless cylinder 76 for moving in and out is driven to coat the upper and lower coating guns 57, 59.
By projecting to an imaginary line position, the end face of the upper flange UF and the upper and lower faces are painted.

(B) As shown by the solid line in FIG.
After the spraying of the upper and lower coating guns 57, 59 is completed, the lifting cylinder device 55 is advanced to lower the working arm 56, and the side coating gun 58 is activated to spray the coating material on the web W. The web W is painted down from above to the line.

(C) As shown by the solid line in FIG.
After the spraying of the side coating gun 58 is completed, the upper and lower coating guns 57 and 59 are activated to spray the coating onto the lower flange DF, and the rod rod cylinder 76 for moving back and forth is driven to drive the upper and lower surfaces. Painting gun 57,5
The upper surface and the lower surface of the lower flange DF and the end surface are painted by moving 9 to the imaginary line position.

(D) Next, coating is carried out in the reverse direction from (c) to (a), and by repeating this, all side surfaces of the I-shaped steel 2 are continuously used by using two coating devices 13A and 13B. Can be painted over the entire length.

The I-type steel 2 is coated with the coating guns 57, 58, 5
If there is a protrusion with which 9 comes into contact, the retracting cylinder device 54 is extended at the corresponding position by the detection signal or the data previously input, and the coating guns 57, 58, 59.
Is set back.

Next, in the case where the stiffener S is provided, (e) as shown by the solid line in FIGS. 12A and 12B, the I-shaped steel 2 by the conveying device 6 is located a predetermined distance L ahead of the stiffener S. Is stopped, the rotating cylinder device 75 is contracted to rotate the side coating gun 58 backward by 45 °, the side coating gun 58 is started to spray the paint onto the stiffener S, and the lifting cylinder device 55 is moved. And the side coating gun 58 is lowered from the raised position to the imaginary line, and the side coating gun 58 is further raised to make one reciprocation, and the entire front surface including the side end surface of the stiffener S is coated.

(F) As shown by the solid lines in FIGS. 12C and 12D, the conveying device 6 is located at a rear position of the stiffener S by a predetermined distance L.
The conveyance of the I-shaped steel 2 is stopped, the rotating cylinder device 75 is advanced, the side coating gun 58 is rotated backward by 45 °, and the same operation as (e) above is performed to coat the entire rear surface of the stiffener S. To do.

According to the above embodiment, in the steel material shape detector 9, the photoelectric width detector 36 and the photoelectric height detector 37 are used.
Detects the width of the upper and lower flanges UF, DF and the height of the I-shaped steel 2 and detects a protrusion, and further detects the stiffener S attached to the I-shaped steel 2 by the ultrasonic stiffener detector 10. Based on the data of the above, the control device 81 moves the coating guns 57, 58, 59 up and down, moves back and forth, and rotates the side coating gun 58 to produce long steel materials having various cross-sectional shapes. Correspondingly, the coating guns 57, 58, 59 are automatically moved and the spraying direction is controlled, so that the entire coating can be uniformly applied. Further, the upper surface coating gun 57 and the lower surface coating gun 59 are inclined to form an angle of 45 ° with respect to the upper and lower surfaces of the flanges UF and DF.
Since the paint is sprayed at an inclination angle of, the upper surface coating gun 57 and the lower surface coating gun 59 can be arranged at positions apart from the I-shaped steel 2 for coating, and the projection attached to the I-shaped steel 2 can be applied. Interference with objects can be reduced. Further, even if there is a protrusion that interferes with the coating guns 57, 58, 59, the retracting cylinder device 54 can surely retract the coating guns 57, 58, 59 without causing a collision.

Further, the upper surface coating gun 57, the side surface coating gun 58, and the lower surface coating gun 59 are provided in the same vertical plane so that the spraying directions intersect at one point in the vertical plane. The coating gun 57 for the lower surface and the coating gun 59 for the lower surface to project or retreat to coat the upper and lower surfaces of the upper flange FU at once, and further to vertically move the side coating gun 58 to coat the web W. Further, the upper and lower surfaces of the lower flange DF are coated at once by retreat movement or protrusion movement of the upper surface coating gun 57 and the lower surface coating gun 59, and by repeating this in the opposite direction, the I-shaped steel 2 is moved. Even with a complicated long steel material including the flanges UF and DF and the web W, the entire side surface can be efficiently and evenly coated by a simple continuous operation with a coating gun (six in total).

Further, by driving the rotating cylinder device 75 to rotate the side surface coating gun 58 about the vertical shaft 72 and to change it in the front and rear direction of the paint spraying direction.
The front and rear surfaces of the stiffener S can be painted, and it is possible to cope with various long steel materials to which reinforcing materials such as stiffeners and protrusions are attached.

Further, the carriages 5A to 5C are connected to the carriage main body 2
Since the mounting table 30 is provided in the central portion of the upper part 7 via the vertical plate 29 along the pass line 1, the cover body 39 having the passage slit 39a through which the vertical plate 29 can pass is provided in the coating chamber 12. While covering the trolley body 27, the passing slit 39
By attaching the flexible seal plate 40 that is slidably contacting the vertical plate 29 to a, it is possible to effectively prevent the paint from adhering to the trolley body 27 in the coating chamber 12.

In the above-mentioned embodiment, the carrier 6 is used as carrier vehicles 5A to 5C traveling on the floor 3, but it is movable along the rails arranged on the ceiling and the I-shaped steel 2 is suspended. It may be a carrying device for carrying.

[0042]

As described above, according to the automatic coating apparatus for long steel materials of the present invention, the position of the coating gun can be controlled in accordance with various kinds of long steel materials, so that good coating can be performed. At the same time, since the coating is performed in the coating chamber shielded by the shielding device, the working environment is not deteriorated. Further, even if there is a protrusion on the long steel material, the coating gun can be reliably retracted.

Further, by arranging the upper surface coating gun, the side surface coating gun, and the lower surface coating gun in the same vertical plane such that the spray directions intersect at one point on the vertical plane, the upper surface coating gun is arranged. And the lower surface coating gun by projecting or retreating, coating the upper and lower surfaces of the flange of, for example, I-shaped steel horizontally extended with a long steel material at one time, and further moving the side surface coating gun up and down following the operation. Then, by coating the side surface of the long steel material, for example, a web of I-shaped steel, and further continuously coating the upper and lower surfaces of the flange at the same time by the backward movement or the protruding movement of the upper surface coating gun and the lower surface coating gun, I-type steel and H-type steel can be coated over the entire circumference from both side surfaces by extremely simple continuous operation.
Therefore, continuous coating can be easily performed in a state where the long steel material is moved, and work efficiency is good, and thus the program of the drive unit and the control unit of the coating apparatus can be greatly simplified. In addition, the top coating gun and the bottom coating gun are tilted so that the paint is sprayed at an angle of inclination with respect to the coating surface, so the top coating gun and the bottom coating gun are located at a position away from the long steel material. It can be placed and painted, and interference with protrusions attached to the long steel material can be reduced.

Furthermore, by tilting the side coating gun rearward, it is possible to coat the front surface of a reinforcing material or a protrusion such as a stiffener attached between flanges of I-shaped steel, and the side coating gun forward. The rear surface of the reinforcing material or the protrusions can be coated by inclining to, and it is possible to cope with various shapes of long steel materials to which the reinforcing material or the protrusions are attached.

[Brief description of drawings]

FIG. 1 is an overall schematic plan view showing an embodiment of an automatic beam coating device according to the present invention.

FIG. 2 is an overall schematic side view showing the automatic beam coating apparatus.

FIG. 3 is a front view showing a carrier truck of the automatic beam coating apparatus.

FIG. 4 is a front view showing an area sensor of the automatic beam coating apparatus.

FIG. 5 is a front view showing a steel material shape detector of the automatic beam coating apparatus.

FIG. 6 is a front partial cross-sectional view showing a coating device of the automatic beam coating device.

FIG. 7 is a partial side sectional view showing a coating device of the automatic beam coating device.

FIG. 8 is a plan view showing a coating device of the automatic beam coating device.

FIG. 9 is a front sectional view showing a working arm of the coating apparatus.

FIG. 10 is a plan sectional view showing a working arm of the coating apparatus.

11 (A) to (C) are front views for explaining the coating work of the I-shaped steel by the coating device.

12 (A) to (D) are front and plan sectional views, respectively, for explaining a stiffener coating operation by the coating apparatus.

[Explanation of symbols]

 1 pass line 2 I type steel W web UF upper flange DF lower flange S stiffener 4 traveling rail 5A to 5C carrier truck 6 carrier device 8 area sensor 9 steel material shape detector 10 stiffener detector 11 shielding device 12 coating chamber 13A, 13B coating device 21 Travel drive 22 Drive motor 25 Drive wire rope 26 Position detector 36 Photoelectric width detector 37 Photoelectric height detector 38 Stiffener detector 53 Elevator box 54 Evacuation cylinder device 55 Elevation cylinder device 56 Working arm 57 Top coating gun 58 Side coating gun 59 Bottom coating gun 72 Vertical shaft 74 Rotating arm 75 Rotating cylinder device 76 Rod rod cylinder for access 81 Control device

Claims (3)

[Claims] 1. A conveyance device for moving a long steel material in a length direction along a path line is provided, and a steel material shape detector for detecting a cross-sectional shape dimension of the long steel material is provided at an entrance side of the pass line. A coating room equipped with a protrusion detector that detects protrusions attached to the steel bar, and has a shielding device that allows passage of the long steel plate on the exit side of the pass line and prevents the release of paint particles in the air. In this coating chamber, a pair of left and right coating devices with a plurality of coating guns that can be moved up and down and retracted are arranged on both sides of the pass line in the coating chamber. Based on the signals from the steel material shape detector and the protrusion position detector, the coating gun of the coating device is operated, and the coating gun is moved back and forth and moved up and down toward the long steel material side, and the transport device is operated. Equipped with a controller Automatic coating equipment elongated steel characterized by. 2. A coating gun for a coating apparatus, which is arranged at an upper portion and sprays paint onto a long steel material obliquely from above, and an upper portion coating gun which is arranged at an intermediate portion from a horizontal direction to the long steel material. It consists of a side coating gun that sprays paint, and a bottom coating gun that is located at the bottom and sprays the paint from diagonally below to the long steel material. 2. The long steel material according to claim 1, wherein and are arranged in a vertical plane orthogonal to the pass line, and the spray directions of the respective coating guns intersect at one point in the vertical plane. Automatic painting equipment. 3. The automatic coating equipment for long steel materials according to claim 2, wherein the side coating gun is rotatable about a horizontal axis.