JP2020192494A - Coating apparatus of steel material - Google Patents

Abstract

To provide a coating apparatus of a steel material which can reduce a coating defect by automating an inspection of an end surface form and an inspection of an end surface state of the steel material.SOLUTION: A coating apparatus includes: conveying means 14 which conveys a steel material 12 in a direction intersecting with a longitudinal direction; first imaging means 20 for one which images a first end surface 12a of the steel material 12 conveyed to a first inspection position S1 for one by the conveying means 14; first painting means 22 which can paint the first end surface 12a of the steel material 12 conveyed to a first coating position S2 by the conveying means 14 with a coating material; and second imaging means 24 for one which images the first end surface 12a of the steel material 12 conveyed to a second inspection position S3 for one by the conveying means 14. The coating apparatus includes control means that determines a form of the first end surface 12a on the basis of image information obtained by the first imaging means 20, and determines the coating state of the first end surface 12a on the basis of image information obtained from the second imaging means 24.SELECTED DRAWING: Figure 1

Description

The present invention relates to a coating apparatus for coating an end face of a steel material for identification.

Conventionally, prior to shipping a steel product produced in a factory as a product to a customer, the material, application, etc. can be identified in the longitudinal direction of the steel material for the user's request or the manufacturer's product management. The end face is painted with a paint of a specified color. This painting work was manually carried out by an operator using a commercially available spray can. However, in the manual work, not only the efficiency is low, but also there are problems such as variation in the coating position and miscoloring.

Therefore, a painting apparatus that automates the painting work (see, for example, Patent Document 1) has been proposed. In the coating apparatus disclosed in Patent Document 1, when a shielding plate having a hole that can be closed and closed by a mask is arranged between the end face of the steel material in the longitudinal direction and the nozzle for spraying paint, and the end face of the steel material is painted. The end face of the steel material is painted by spraying the paint from the paint spraying nozzle toward the hole with the holes opened by the mask.

Japanese Unexamined Patent Publication No. 52-10954

The painting conditions specified by the user are not only uniform painting without paint color or uneven color, but also, for example, painting both end faces in the longitudinal direction of the steel material, or painting only one end face. There are various conditions such as conditions for painting only the chamfered end face, and even when the painting device is used, the end face of the steel material matches the painting conditions (presence or absence of chamfering, etc.) before painting. ), And after painting, check whether the color painted on the end face matches the painting conditions, whether the color is evenly painted, etc. I relied on the eyes of the person. Therefore, there is a problem that the burden on the operator performing the confirmation work is increased, human error is likely to occur, and a poorly painted steel material that is not painted under appropriate conditions is shipped. Further, since the instruction of the coating conditions was given by a document in which the coating conditions were printed or a document in which the PDF material was printed, the coating conditions described in the document were collated with the end face morphology and the coating state of the steel material. Human errors such as oversights and misunderstandings of workers were likely to occur.

That is, the present invention has been proposed in view of the above-mentioned problems inherent in the above-mentioned prior art, in order to preferably solve the above-mentioned problems, and inspects the morphology of the steel end face before painting and the state of the steel end face after painting. It is an object of the present invention to provide a steel coating apparatus capable of automating inspection and reducing coating defects.

In order to overcome the above-mentioned problems and achieve the intended purpose, the steel coating apparatus according to the invention of claim 1 is used.
A steel coating device that coats the end faces (12a, 12b) in the longitudinal direction of the steel (12).
A transport means (14) for transporting the steel material (12) in a direction intersecting the longitudinal direction,
The first imaging means (20) for photographing one end face (12a) in the longitudinal direction of the steel material (12) conveyed to the first inspection position (S1) by the conveying means (14).
A coating means (22) capable of applying paint to one end face (12a) of the steel material (12) transported from the first inspection position (S1) to a coating position (S2) downstream of the transport,
A second imaging means (24) for imaging one end face (12a) of the steel material (12) transported to a second inspection position (S3) downstream of the coating position (S2).
The image information obtained by the first imaging means (20) is collated with the painting information, and the state of one end face (12a) is changed based on the image information obtained by the second imaging means (24). The gist is that it is equipped with a control means (32) for determining whether or not it is appropriate.
In the invention of claim 1, the image information obtained by imaging one end face of the steel material before painting and the painting information are collated by the control means, and the state of the end face is based on the image information obtained by imaging one end face of the steel material after painting. Is determined by the control means, so that it is possible to reduce the occurrence of coating defects due to human confirmation mistakes and the like. Further, since it is not necessary to collate the end face form and the end face state of the steel material in writing, the burden on the operator can be reduced.

In the invention of claim 2, the control means (32) controls the painting means (22) based on the result of collating the image information obtained by the first imaging means (20) with the painting information. The gist is that it is configured as follows.
In the invention of claim 2, since the coating means is controlled by the control means according to the collation result based on the image information obtained by imaging one end face of the steel material before painting, the morphology of the steel end face before painting is inspected. It is possible to automate the process from painting the end face of the steel material to inspecting the condition of the end face of the steel material after painting, and it is possible to further reduce the occurrence of coating defects due to human confirmation mistakes and the like.

The invention of claim 3 is a positioning that determines a relative position between one end face (12a) of the steel material (12) conveyed to the first inspection position (S1) and the first imaging means (20). The gist is to provide means (34).
In the invention of claim 3, since the relative position between one end face of the steel material and the first imaging means is determined, one end face can always be imaged by the first imaging means under the same conditions. The morphology of one end face can be accurately determined based on the information.

In the invention of claim 4, the positioning means (34) moves the steel material (12) toward the first imaging means (20) in the longitudinal direction by the moving means (36), and the steel material (12) By contacting one end face (12a) with the contact member (38), the relative position between the first imaging means (20) and one end face (12a) of the steel material (12) is determined. The gist is that.
In the invention of claim 4, the relative position between the first imaging means and one end face of the steel material can be determined by a simple configuration.

The invention of claim 5 captures an image of the other end face (12b) in the longitudinal direction of the steel material (12) transported from the second inspection position (S3) to the first inspection position (S4) for the other downstream of the transfer. The first imaging means (26) for the other
A coating color for the other that can apply paint to the other end face (12b) of the steel material (12) transported from the first inspection position (S4) for the other to the coating position (S5) for the other downstream of the transport. Means (28) and
A second imaging means for the other (12b) that images the other end face (12b) of the steel material (12) transported to the second inspection position (S6) for the other downstream from the coating position (S5) for the other. 30) and
The control means (32) collates the image information obtained by the first imaging means (26) for the other with the painting information, and the image information obtained by the second imaging means (30) for the other. The gist is that it is configured to determine whether or not the state of the other end face (12b) is appropriate based on the above.
In the invention of claim 5, a device capable of painting based on the image information of one end face of the steel material is continuously mounted on the downstream side of the device capable of painting based on the image information of the other end face of the steel material. Since it is arranged, it is possible to collate painting information with both end faces without changing the orientation of the steel material, and it is possible to judge the state of both end faces, reducing the occurrence of painting defects due to human confirmation mistakes, etc. Can be done.

In the invention of claim 6, the control means (32) collates the image information obtained by the first imaging means (26) for the other with the painting information, and the color coating means for the other is based on the result of collating the painting information. The gist is that it is configured to control (28).
In the invention of claim 6, since the coating means is controlled by the control means according to the collation result based on the image information obtained by imaging the other end surface of the steel material before coating, the other end surface is appropriately coated. be able to.

The invention of claim 7 is a relative relationship between the other end face (12b) of the steel material (12) conveyed to the first inspection position (S4) for the other and the first imaging means (26) for the other. The gist is to provide a positioning means (40) for the other side that determines a specific position.
In the invention of claim 7, since the relative positions of the end faces of the steel material and the corresponding first imaging means are determined, both end faces can always be imaged by the first imaging means under the same conditions. The morphology of both end faces can be accurately determined based on the image information.

In the invention of claim 8, the positioning means (40) for the other side moves the steel material (12) toward the first imaging means (26) for the other side in the longitudinal direction by the moving means (36). By contacting the other end face (12b) of the steel material (12) with the abutting member (38), the first imaging means (26) for the other and the other end face (12b) of the steel material (12) can be brought into contact with each other. The gist is that it is configured to determine the relative position.
In the invention of claim 8, the relative position between the first imaging means for the other and the other end face of the steel material can be determined by a simple configuration.

According to the steel coating apparatus according to the present invention, it is possible to automate the inspection of the end face morphology of the steel material before painting and the inspection of the end face condition after painting, reducing coating defects due to human error and by an operator. The burden of can be reduced.

It is the schematic which shows the coating apparatus which concerns on Example. It is a control block diagram of the coating apparatus which concerns on Example.

Next, the steel coating apparatus according to the present invention will be described below with reference to the accompanying drawings with reference to suitable examples.

As shown in FIG. 1, the steel coating apparatus 10 of the embodiment uses, for example, a long steel material 12 having a diameter of 3 mm to 12 mm and a length of 2 m to 6 m, such as a round bar steel, as the longitudinal direction of the steel material 12. A transport means 14 for transporting in intersecting directions is provided, and along the steel material transport direction by the transport means 14, morphological inspection (verification), painting, and coating state inspection of one end surface 12a in the longitudinal direction of the steel material 12 are performed. A first inspection / painting portion 16 is provided, and a form inspection (verification), painting, and painting of the other end surface 12b of the steel material 12 in the longitudinal direction is provided on the downstream side of the first inspection / painting portion 16 in the steel material transport direction. A second inspection / painting unit 18 for inspecting the state is provided. Hereinafter, one end face 12a of the steel material 12 is referred to as a first end face 12a, and the other end face 12b is referred to as a second end face 12b.

The first inspection / coating portion 16 is arranged on the downstream side in the steel material transport direction from the first imaging means 20 for one side to image the first end surface 12a of the steel material 12 and the first imaging means 20 for the one side. , The first coloring means (one-sided coloring means) 22 capable of applying paint to the first end surface 12a, and the first end surface 12a arranged on the downstream side in the steel material transport direction from the first coloring means 22. It is provided with a second imaging means 24 for one-sided imaging. Further, the second inspection / coating portion 18 is arranged from the upstream side to the downstream side in the steel material transport direction in the same order as the first inspection / coating portion 16, and the first imaging means 26 for the other side and the second coating portion 18. It includes a color means (painting means for the other) 28 and a second imaging means 30 for the other. The means 20, 22, 24 of the first inspection / painting section 16 are arranged on one side of the transport path by the transport means 14, and the means 26, 28, 30 of the second inspection / painting section 18 are arranged. Is arranged on the other side of the transport path by the transport means 14. Then, the painting apparatus 10 collates the image information obtained by the first imaging means 20 and 26 for one and the other with the painting information described later, and the second imaging means 24 and 30 for one and the other. A control means 32 for determining whether or not the state (painted state) of the corresponding end faces 12a and 12b of the steel material 12 is appropriate is provided based on the image information obtained in. In the embodiment, the control means 32 controls the corresponding painting means 22, 28 based on the result of collating the image information and the painting information of one and the other end faces 12a and 12b of the steel material 12. In the embodiment, the painted state refers to the end face state of the steel material 12 conveyed to the downstream side of the first painting means 22 or the second painting means 28, and the end face is painted. It does not mean only.

As the transport means 14, the fixed beam 14a and the movable beam 14b are alternately arranged in the longitudinal direction of the steel material 12, and the steel material 12 intersects the longitudinal direction thereof by repeating the operation of raising and lowering the movable beam 14b. A walking beam type transport means for transporting in a direction is preferably used. In the embodiment, the transport path of the transport means 14 has a first inspection position S1 for one side, a first coating position (painting position for one side) S2, a second inspection position S3 for one side, and a first inspection position for the other side. S4, the second coating position (coating position for the other side) S5, and the second inspection position S6 for the other side are set in order from the upstream side to the downstream side in the steel material transport direction. Then, by operating the movable beam 14b, one or a plurality of steel materials 12 are conveyed to the respective positions S1, S2, S3, S4, S5, S6. At each position S1, S2, S3, S4, S5, S6, the steel materials 12 are set so as not to overlap in the vertical direction. Further, when the steel material 12 is conveyed in the direction intersecting the longitudinal direction, the walking beam type conveying means can convey the steel material 12 without substantially being displaced in the longitudinal direction.

As shown in FIG. 1, the lens is arranged on one side of the first inspection position S1 for one side so as to face the first end surface 12a of the steel material 12 conveyed to the first inspection position S1 for the one side. The first imaging means 20 for one of the above, which is composed of a CCD camera or the like, is arranged. The first imaging means 20 for one side takes an image of the first end surface 12a in a state where the first end surface 12a of the steel material 12 is irradiated with light from a lighting means (not shown), and the image information captured is the control means 32. Is entered in.

The one-sided first inspection position S1 is provided with a first positioning means (one-sided positioning means) 34 for determining a relative position between the one-sided first imaging means 20 and the first end surface 12a. Has been done. The first positioning means 34 is a moving means 36 composed of a roller conveyor in which a plurality of rollers are arranged in parallel in a direction intersecting the steel material conveying direction, and a front side (a side facing the conveying means 14) of the first imaging means 20 for one side. The contact member 38 is provided with a contact member 38 disposed in isolation for a certain period of time, and the contact member 38 is provided with an operating means 39 such as a cylinder between a regulated position and a retracted position where the first end surface 12a of the steel material 12 can contact. Is configured to move up and down. The moving means 36 is configured to move the steel material 12 delivered from the conveying means 14 in the longitudinal direction so as to approach the first imaging means 20 for one side, and is configured to move to the contact member 38 positioned at the regulated position. By abutting the first end surface 12a, the steel material 12 can be positioned so that the facing distance between the first imaging means 20 for one side and the first end surface 12a is constant. The moving means 36 can abut the steel material 12 having a variation in the position of the first end surface 12a conveyed to the one-sided first inspection position S1 by the conveying means 14 and the first end surface 12a to the abutting member 38. The contact member 38 stops after operating for a predetermined time, and moves to the retracted position after the moving means 36 is stopped (after the steel material 12 is positioned), so that the first end surface of the first imaging means 20 for one side is used. It is configured to enable imaging of 12a. The first positioning means 34 (moving means 36, contact member 38) and the first imaging means 20 are detected by a detecting means (not shown) that the steel material 12 is conveyed to the first inspection position S1 by the conveying means 14. It is controlled by the control means 32 based on the conditions.

As shown in FIG. 1, the first coating means 22 capable of coating the first end surface 12a of the steel material 12 conveyed to the first coating position S2 is arranged on one side of the first coating position S2. To. The first coating means 22 sprays the paint stored in the coating tank from a spray nozzle installed toward the transport path side, so that the coating is applied to the first end surface 12a of the steel material 12 located at the first coating position S2. Is applied. The steel material 12 is conveyed one by one to the first coating position S2 by the conveying means 14, and the steel material end faces are coated one by one by the first coating means 22. Further, in a state where the steel material 12 whose first end surface 12a is positioned by the first positioning means 34 is conveyed to the first coating position S2, the distance between the first end surface 12a and the spray nozzle is the spray nozzle. The paint sprayed from is applied to the entire first end surface 12a and is set so as not to be applied to the outer peripheral surface of the steel material other than the first end surface. The first coating means 22 is controlled by the control means 32 under the condition that the detecting means (not shown) detects that the steel material 12 has been conveyed to the first coating position S2 by the conveying means 14.

Here, in the first coating means 22, a plurality of coating tanks in which paints of different colors are stored are connected to the spray nozzle via a switching valve, and the first coating means 22 is described according to coating conditions (designated color). The control means 32 is configured to switch and control the switching valve to switch the type of paint tank connected to the spray nozzle. When the designated color is changed, the inside of the paint supply path is washed with a cleaning liquid so that the colors are not mixed.

As shown in FIG. 1, the second imaging means 24 for one side is arranged on one side of the second inspection position S3 for one side. The second imaging means 24 for one side is an imaging means made of the same CCD camera or the like as the first imaging means 20 for one side, and the second imaging means 24 for one side is a steel material 12 from a lighting means (not shown). The first end surface 12a is irradiated with light, the first end surface 12a is imaged, and the image information captured is input to the control means 32. The second imaging means 24 for one side is configured to input color image information to the control means 32. Further, the second imaging means 24 is controlled by the control means 32 under the condition that the detecting means (not shown) detects that the steel material 12 has been conveyed to the second inspection position S3 by the conveying means 14.

As shown in FIG. 1, on the other side of the transport path of the transport means 14, the first imaging means 26 for the other, the second painting means 28, and the other, which constitute the second inspection / painting portion 18, are used. The second imaging means 30 is arranged corresponding to the first inspection position S4 for the other side, the second coating position S5, and the second inspection position S6 for the other side. The configuration of the first imaging means 26 for the other, the second painting means 28, and the second imaging means 30 for the other is such that the first imaging means 20 for one, the first coloring means 22, and the second for one. It is the same as the imaging means 24. Further, at the first inspection position S4 for the other side, similarly to the first positioning means 34, the moving means 36 made of a roller conveyor and the front side (the side facing the transporting means 14) of the first imaging means 26 for the other side. A second positioning means (positioning means for the other side) 40 is provided, which is composed of a contact member 38 arranged separately for a certain period of time. Then, the steel material 12 conveyed to the first inspection position S4 for the other by the conveying means 14 is moved in the longitudinal direction by the moving means 36 toward the first imaging means 26 for the other, and the second end surface 12b is hit. By abutting on the contact member 38, the relative positions of the first imaging means 26 for the other and the second end surface 12b can be made constant. In addition, corresponding to the first imaging means 26 and the second imaging means 30 for the other, the second end surface 12b of the steel material 12 conveyed to the corresponding first inspection position S4 and the second inspection position S6 for the other is illuminated. Lighting means is provided. Further, the first imaging means 26 and the second painting means 28 for the other, the second imaging means 30 and the second positioning means 40 for the other are for the other, similarly to the first inspection / painting portion 16. It is controlled by the control means 32 based on the condition that the detection means (not shown) detects that the steel material 12 has been conveyed to the first inspection position S4, the second coating position S5, and the second inspection position S6 for the other.

As shown in FIG. 2, the control means 32 that controls the coating device 10 includes an image processing unit 42 and a determination unit 44, and the control means 32 is equipped with the first imaging means 20 and the first coating color for one of the above. Means 22, second imaging means 24 for one, first positioning means 34, first imaging means 26 for the other, second painting means 28, second imaging means 30 for the other, second positioning means 40 and transport. Each of the means 14 is connected. Further, a higher-level computer (not shown) that manages production in the factory is connected to the control means 32, and painting conditions (painting information) related to the steel material 12 are input to the control means 32 from the higher-level computer. There are various conditions (information) such as designated color to be painted, double-sided painting, single-sided painting, and chamfered end face only painting, and the painting conditions are processed by the painting device 10 according to a schedule based on production control. It is input corresponding to each type of steel material 12 and each user to be shipped. In addition, the condition for designating the shape (shape) of the end face of the steel material to be painted in the painting conditions may be hereafter referred to as the target shape.

The image processing unit 42 binarizes the image information before painting input from the first imaging means 20 and 26 by light and dark, and processes the end face form (whether or not chamfering) of the steel material 12 so that it can be recognized. .. Further, the determination unit 44 collates the image-processed image information before painting (image information for specifying the end face morphology) with the painting conditions input from the host computer, and the end face morphology is the painting target (target morphology). (Match) or not. For example, when the object to be painted (target form) is a chamfered end face and the end face form recognized based on the image information before painting is the chamfered end face, the determination unit 44 determines that the object is to be painted. Then, the control means 32 controls the corresponding painting means 22, 28 so that the end faces 12a, 12b of the steel material 12 are painted by the painting means 22, 28 based on the determination result by the determination unit 44. .. On the other hand, if the object to be painted (target form) is an end face without chamfer and the end face form recognized based on the image information before painting is the end face with chamfer, the determination unit 44 is not the object to be painted. Based on the determination result of the determination unit 44, the control means 32 determines the color coating means 22, 28 so that the end faces 12a, 12b of the steel material 12 are not painted by the corresponding color coating means 22, 28. Control. Various steel material information such as the type and dimensions of the steel material 12 is input to the control means 32 from the host computer, and the determination unit 44 conveys the steel material 12 to the painting device 10 based on the image information before painting. However, it is possible to determine whether or not the steel material 12 meets the schedule.

Further, the image processing unit 42 determines whether or not the paint is applied to the steel material 12 and whether or not the paint is uniform based on the color-painted image information input from the second imaging means 24 and 30. (Whether or not there is color unevenness) and the color of the applied paint, etc. can be recognized. Then, the determination unit 44 determines the state of the steel material end face (painting state) based on the image information after the image-processed painting (the steel material end face conveyed to the downstream side of the painting means 22 and 28). Judge whether it is appropriate or not based on the painting conditions (painting information) input from. It should be noted that various conditions for determining whether or not the coating state of the steel end face is appropriate based on the image information of the second imaging means 24 and 30 may be collectively referred to as the end face state condition. Incidentally, the end face state conditions include, with or without painting on the end face of the target form, without painting on the end face of the non-target form, the color of the painted paint matches the designated color, and the paint is uniform. Further, an alarm means 46 such as an alarm lamp or an alarm buzzer is connected to the control means 32 (see FIG. 2), and the end face state is not appropriate in the determination based on the image information after painting by the determination unit 44 (end face). If it is determined that the condition condition is not met), the control means 32 is configured so that the alarm means 46 can notify that a coating defect has occurred.

[Action of Example]
Next, the operation of the steel coating device of the embodiment configured as described above will be described.

When a predetermined number of steel materials 12 are transported from the previous process to the first inspection position S1 for one side by the transport means 14, various treatments on the first end surface 12a of the steel materials 12 are performed by the first inspection / coating portion 16. It is executed in order. That is, the control means 32 stops the transporting means 14 and operates the moving means 36 of the first positioning means 34 to transfer the steel material 12 to the first inspection position S1 for one side to the first for one side. It moves so as to approach the imaging means 20. The steel material 12 moved by the moving means 36 is used for one side with the first end surface 12a by contacting the first end surface 12a with the contact member 38 located at the regulated position in front of the first imaging means 20 for one side. The distance facing the first imaging means 20 is constant. Then, when the predetermined time elapses, the control means 32 stops the operation of the moving means 36 and moves the contact member 38 to the retracted position, so that the first imaging means 20 for one side can take an image. .. The first image pickup means 20 for one side takes an image of the first end surface 12a of the steel material 12 irradiated with light by the lighting means, and the image information before painting is input to the image processing unit 42 of the control means 32.

The image processing unit 42 binarizes the input image information before painting by light and dark so that the end face morphology of the steel material 12 can be recognized. Then, the determination unit 44 collates the form of the first end surface 12a with the coating target (target form) under the coating conditions input from the host computer based on the image-processed image information before painting, and the first 1 It is determined whether or not the form of the end surface 12a is to be painted. When the determination unit 44 determines that the coating target is to be applied, the control means 32 paints the number of steel materials 12 determined to be the coating target at the first inspection position S1 for one side so that the first coating means 22 paints the steel materials 12. The first painting means 22 is controlled. That is, each time the steel materials 12 are conveyed one by one to the first coating position S2 by the conveying means 14, the first coating means 22 is operated to apply the paint of the designated color specified by the coating conditions to the first end surface 12a. Is applied. Further, when the determination unit 44 determines that the form of the first end surface 12a is not the object to be painted, the control means 32 controls the first painting means 22 so as not to execute the painting by the first painting means 22. To do.

When a predetermined number of steel materials 12 are transported from the first coating position S2 to the second inspection position S3 for one side by the transport means 14, the second imaging means 24 for one side is irradiated with light by the lighting means. The first end surface 12a of the steel material 12 is imaged, and the image information after painting is input to the image processing unit 42 of the control means 32. The image processing unit 42 processes the steel end face so that the painted state can be recognized based on the input color information after painting. Then, the determination unit 44 determines whether or not the coating state of the first end surface 12a is appropriate, that is, whether or not the coating state matches the end face state condition, based on the image-processed image information after painting. To do. When the determination unit 44 determines that it is appropriate, the control means 32 does not execute the alarm by the alarm means 46. However, when the determination unit 44 determines that it is not appropriate, the control means 32 operates the alarm means 46 to execute the alarm. As a result, the operator can recognize that there is a coating defect, and can perform appropriate treatment such as removing the steel material 12 having the coating defect.

Next, when a predetermined number of steel materials 12 are transported to the first inspection position S4 for the other by the transport means 14, the control means 32 stops the transport means 14 and the moving means of the second positioning means 40. The 36 is operated to move the steel material 12 conveyed to the first inspection position S4 for the other so as to approach the first imaging means 26 for the other. The steel material 12 moved by the moving means 36 is used for the second end surface 12b and the other by contacting the second end surface 12b with the contact member 38 located at the regulated position in front of the first imaging means 26 for the other side. The distance facing the first imaging means 26 is constant. Then, when the predetermined time elapses, the control means 32 stops the operation of the moving means 36 and moves the contact member 38 to the retracted position, so that the first imaging means 26 for the other side can take an image. .. The first imaging means 26 for the other side images the second end surface 12b of the steel material 12 irradiated with light by the lighting means, and the image information after painting is input to the image processing unit 42 of the control means 32.

The subsequent treatments of the second inspection / painting portion 18 for the steel material 12 whose position of the second end surface 12b is determined by the second positioning means 40 are the same as the treatments of the first inspection / painting portion 16. In the same case, when the determination unit 44 determines that the second end surface 12b of the steel material 12 is to be painted based on the image information before painting, every time the steel material 12 is conveyed to the second coating position S5. , The second coating means 28 is operated to apply the paint of the designated color specified in the coating conditions to the second end surface 12b, and then the image is taken by the second imaging means 30 for the other at the second inspection position S6 for the other. Based on the image information after painting, the determination unit 44 determines whether or not the painting state is appropriate. Then, when the determination unit 44 determines that it is appropriate, the transport means 14 is operated without operating the alarm means 46 to transport the painted steel material 12 to the subsequent process. In addition, the second end surface 12b is the target form but is not painted, or conversely the non-target form is painted but the painted paint is different from the specified color. When there is color unevenness or the like, the determination unit 44 determines that the coating state is not appropriate, and the control means 32 operates the alarm means 46 to execute an alarm.

According to the coating apparatus 10 of the embodiment, it is determined whether or not the form of the end faces 12a and 12b of the steel material 12 before painting is the object of painting, and whether or not the coating state of the end faces 12a and 12b of the steel material 12 after painting is appropriate. Since the control means 32 is configured to perform the determination based on the image information captured by the image pickup means 20, 24, 26, 30, it is possible to prevent the occurrence of human error by the operator and the burden on the operator. Can be reduced. Further, since the inspection of the morphology of the end faces 12a and 12b of the steel material 12 before painting, the painting work of the end faces 12a and 12b of the steel material 12 and the inspection of the painted state of the end faces 12a and 12b of the steel material 12 after painting are automated, the inspection is performed. It is possible to suppress the occurrence of coating defects due to human error of the operator. Further, since the operator can omit the work of visually collating the coating condition in writing with the end face shape and the coating state of the steel material 12, mistakes in the collation work can be eliminated and the burden on the operator is further increased. Can be mitigated.

The first end surface 12a and the second end surface 12b of the steel material 12 conveyed to the first inspection position S1 for one side and the first inspection position S4 for the other side are subjected to the first imaging means 20,26 by the corresponding positioning means 34,40. Since the relative positions of the first imaging means 20 and 26 and the corresponding end faces 12a and 12b are set to be constant, the forms of the first end face 12a and the second end face 12b can be accurately formed. It can be imaged. That is, the determination based on the image information captured by the first imaging means 20 and 26 can be accurately performed. Further, since the walking beam type transport means 14 for transporting the steel material 12 so as not to be substantially displaced in the longitudinal direction is adopted, the positioning means 34 and 40 are provided at the coating positions S2 and S5 and the second inspection positions S3 and S6. The coating of the end faces 12a and 12b and the inspection of the coating state can be performed accurately without complicating the apparatus configuration. Further, since the positioning means 34 and 40 are composed of the moving means 36 and the abutting member 38, the relative positions of the first imaging means 20 and 26 and the corresponding end faces 12a and 12b are made constant by a simple configuration. can do.

Further, in the coating apparatus 10 of the embodiment, the first inspection / painting portion 16 that inspects and paints one first end surface 12a of the steel material 12 and the other second end surface 12b of the steel material 12 are inspected and painted. 2 Inspection ・ Since the painted portion 18 is continuously provided, proper coating can be applied to both end faces 12a and 12b without changing the orientation of the steel material 12, and the coating state of both end faces 12a and 12b can be determined. be able to.

[Change example]
The present application is not limited to the configuration of the above-described embodiment, and other configurations may be appropriately adopted.
1. 1. In the embodiment, the first inspection / painting portion and the second inspection / painting portion are arranged on one side and the other side of the steel material transport path so that both end faces in the longitudinal direction of the steel material can be painted. However, when the coating condition is to process only the steel material to be coated on only one end face of the steel material, the second inspection / coating portion can be omitted.
2. 2. In the embodiment, the steel material is moved in the longitudinal direction so that the relative position between the end face and the imaging means or the coloring means is fixed, but the end face of the steel material conveyed by the conveying means is used as the position detecting means. It is possible to adopt a configuration in which the imaging means and the coloring means are moved close to and separated from the end face so that the relative positions of the end face and the imaging means and the painting means are constant.
3. 3. The abutting member is configured to be movable and adjustable in the longitudinal direction of the steel material, and the distance between the coating means and the end face is changed according to the size (diameter) of the end face of the steel material, from a spray nozzle with a constant hole diameter. It is possible to adopt a configuration in which the entire end face can be painted by the sprayed paint.
4. The end face shape of the steel material is not limited to a circle, but may be a square shape or another shape.

5. In the embodiment, when a plurality of steel materials are transported to each inspection position, the end face morphology and coating state of the plurality of steel materials are imaged and determined by an imaging means, but the steel materials transported to each inspection position are determined. It is possible to adopt a configuration in which images are taken one by one for determination.
6. In the embodiment, a method of spraying paint from a spray nozzle is adopted as a painting means, but the paint is applied to the surface of a pad made of a material such as rubber which has flexibility and does not allow the paint to penetrate. Various known methods such as a method of transferring the paint to the end face by pressing the pad against the end face of the steel material can be adopted.
7. The transporting means is not limited to the walking beam type transporting means, and various known types of transporting means can be adopted.
8. The moving means of the positioning means is not limited to the roller conveyor, and may be a pusher or the like whose drive source is a cylinder.
9. It is possible to adopt a configuration in which the exclusion means is provided on the downstream side of the second inspection position and the steel material determined to be poorly painted is excluded by the exclusion means.
10. In the embodiment, the corresponding coating means is controlled based on the determination result of whether or not the morphology of one and the other end faces of the steel material is the object to be painted, but the morphology of the one or the other end face is not the object to be painted. When the control means determines that, the entire device can be stopped, or the alarm means can be activated to execute the alarm. Further, regardless of the determination result of the control means, the coating means is configured to paint the end face of the steel material that has reached the coating position, and the steel material determined by the control means not to be coated is transported to the coating position before being conveyed. A configuration such as exclusion by an exclusion means or movement to another route can be adopted.
11. In the embodiment, the determination before painting and the determination after painting are performed by one determination unit, but a configuration in which the determination is performed by separate determination units can be adopted.
12. In the embodiment, the determination unit of the control means collates the image information obtained by the first imaging means with the painting conditions (painting information) input from the host computer, and determines whether or not the end face form is the target form for painting. Although it is configured to determine, the control means includes a collating unit that collates the image information obtained by the first imaging means with the painting information, and when the collation result in the collating unit is a mismatch between the two information, A configuration such as stopping the entire device or executing an alarm by an alarm means can be adopted.

12 Steel, 12a 1st end face (one end face), 12b 2nd end face (the other end face)
14 Transport means, 20 One-sided first imaging means, 22 First color coating means (painting means)
24 Second imaging means for one side, 26 First imaging means for the other 28 Second painting means (coloring means for the other), 30 Second imaging means for the other 32 Control means, 34 First positioning means ( Positioning means), 36 Moving means 38 Contact member, 40 Second positioning means (Positioning means for the other)
S1 1st inspection position for one side, S2 1st coating position (painting position)
S3 2nd inspection position for one side, S4 1st inspection position for the other S5 2nd coating position (painting position for the other), S6 2nd inspection position for the other

Claims (8)

A steel coating device that coats the end faces of steel in the longitudinal direction.
A transport means for transporting the steel material in a direction intersecting the longitudinal direction, and
A first imaging means for photographing one end face in the longitudinal direction of the steel material conveyed to the first inspection position by the conveying means, and a first imaging means.
A coating means capable of applying paint to one end face of the steel material transported to a coating position downstream of the first inspection position, and a coating means.
A second imaging means for imaging one end face of the steel material transported to a second inspection position downstream of the coating position.
A control means for collating the image information obtained by the first imaging means with the painting information and determining whether or not the state of one of the end faces is appropriate based on the image information obtained by the second imaging means. A steel coating device characterized by being equipped with. The steel coating device according to claim 1, wherein the control means is configured to control the coating means based on a result of collating the image information obtained by the first imaging means with the coating information. The steel coating apparatus according to claim 1 or 2, further comprising a positioning means for determining a relative position between one end face of the steel material conveyed to the first inspection position and the first imaging means. The positioning means moves the steel material toward the first imaging means in the longitudinal direction by the moving means, and abuts one end face of the steel material on the abutting member, whereby one of the first imaging means and the steel material. The steel coating apparatus according to claim 3, wherein the position relative to the end face of the steel material is determined. A first imaging means for the other, which images the other end face in the longitudinal direction of the steel material transported to the first inspection position for the other downstream from the second inspection position.
A coating means for the other capable of applying paint to the other end face of the steel material transported to the coating position for the other downstream from the first inspection position for the other.
It is provided with a second imaging means for the other that images the other end face of the steel material transported to the second inspection position for the other downstream from the coating position for the other.
The control means collates the painting information with the image information obtained by the first imaging means for the other, and based on the image information obtained by the second imaging means for the other, the end face of the other. The steel coating apparatus according to any one of claims 1 to 4, which is configured to determine whether or not the state is appropriate. The steel material according to claim 5, wherein the control means is configured to control the painting means for the other based on the result of collating the image information obtained by the first imaging means for the other with the painting information. Painting equipment. The fifth or sixth aspect of claim 5 or 6, further comprising a positioning means for the other that determines a relative position between the other end face of the steel material conveyed to the first inspection position for the other and the first imaging means for the other. Steel coating equipment. The positioning means for the other is used by moving the steel material toward the first imaging means for the other in the longitudinal direction by the moving means and abutting the other end surface of the steel material with the abutting member. The steel coating apparatus according to claim 7, wherein the position of the first imaging means and the other end face of the steel material is determined.

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