KR100894354B1 - Labeling system of a steel material - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a labeling system for steel, the labeling system for marking steel, the conveying means for conveying the steel, the measuring means for sensing the conveying speed of the steel, and the movement and rotation to the steel conveyed by the conveying means Marking means for marking with the ink head, and a control unit for receiving the detection signal output from the measuring means, and controlling the marking means to transfer the marking by moving the ink head in accordance with the feed rate of the steel material. Accordingly, the present invention can reduce the working time in the cutting process, such as by performing a marking operation in the cutting process, such as a post-process in advance by automating the marking operation for the existing steel, and the ink head according to the feed rate of the steel By marking while transferring, the marking can be accurately marked at the desired position in the steel, and the marking quality is improved, and the measuring speed, position, size, and inclination of the steel can be accurately measured, contributing to the improvement of marking position accuracy and marking quality. In addition, the nozzles forming each row in the ink head have superb marking quality by marking information such as letters and numbers on steel materials.

Steel, measuring means, rollers, sensors, ink heads, nozzles, controls

Description

LABELING SYSTEM OF A STEEL MATERIAL}

The present invention relates to a steel labeling system for marking information, such as letters and numbers, on the steel to be conveyed at a desired position with high accuracy.

In general, shipyards using steel materials are shortened to remove rust and foreign substances from steel materials, and then apply a primer, followed by a labeling process for marking identification on steel materials. .

The labeling process of such steels was performed manually by the prior art, which will be described below.

First, check the shot quality of the steel, check the sequence number of the steel card, check the width and thickness of the steel by using a tape measure and a measuring instrument, and then record these on the steel and the card, respectively. On the bottom, specifications, materials, and W / O No. Mark your back. Then mark the crane ID on the center surface of the steel so that the crane driver can see it and move it where it is needed.

In order to facilitate the labeling process of steel materials, which are conventionally performed by hand, the related art is related to the automatic labeling apparatus of steel materials. In Korean Patent Publication No. 1996-040572, "Marking Gantry Robot" is irregular used in shipyards and the like. In marking large steel sheets of phosphorous size, etc., at a certain position on each steel plate during conveying by using a conveyor, even if the steel sheet enters an arbitrary position of the conveyor width, various information ( A gantry-type robot capable of marking letters, numbers, colors, etc.) in real time between transfers or stops has been proposed, and in Korean Patent Application Publication No. 1996-040657, "Tool Assembly for Multiheads of Capital Letter Inkjet Printers", The speed of the water is variable and the printing of capital letters must be done with several inkjet print heads. An automatic marking robot system applied to the field of jetjet marking is proposed.

As described above, the related arts of the labeling apparatus for automatically marking information on steel material have a problem that the marking quality of the steel is deteriorated by performing marking on the steel that enters an arbitrary position without considering the feed rate of the steel. I had.

According to the present invention, the ink head is transferred in consideration of the conveying speed of the steel to accurately mark information such as letters and numbers at a desired position of the steel, so that the quality of the marking is excellent.

In one embodiment of the present invention, the labeling system for steel is a labeling system for marking steel, the conveying means for conveying the steel, the measuring means for detecting the conveying speed of the steel, and the movement of the steel conveyed by the conveying means and Marking means for marking with a rotating ink head, and a control unit for receiving the detection signal output from the measuring means, and controlling the marking means to transfer the marking by moving the ink head in accordance with the feed rate of the steel.

The present invention has the following effects.

First, it is possible to reduce the working time in the cutting process by performing the marking work in the cutting process, which is a post-process in advance by automating the marking work for the existing steel,

Secondly, the ink head is transferred while marking according to the conveying speed of the steel, so that the marking can be accurately marked at the desired position in the steel and the marking quality is improved.

Third, by accurately measuring the feed speed, position, size, angle of inclination, etc. of the steel, contribute to the improvement of the marking position accuracy and marking quality,

Fourth, the nozzles forming each row in the ink head have superb marking quality by marking information such as letters and numbers on steel materials.

According to the present invention, the steel material conveyed by the conveying means is detected by conveying the ink head in accordance with the conveying speed of the steel by sensing the conveying speed by the measuring means.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a perspective view showing a labeling system of the steel according to the present invention, Figure 2 is a block diagram showing a labeling system of the steel according to the present invention. As shown, the labeling system 100 of the steel according to the present invention comprises a conveying means 110 for conveying the steel 1, a measuring means 120 for detecting the conveying speed of the steel 1, the conveying means Marking means 130 for marking with the ink head 132 moving and rotating on the steel 1 conveyed by the 110, and receiving the detection signal output from the measuring means 120 and marking means 130 It includes a control unit for controlling).

The conveying means 110 may have various configurations for conveying the steel 1, and preferably a conveyor system is used, the conveying table 111 installed on the conveying path of the steel 1, and the conveying table. A plurality of transfer rollers 112 installed in side by side, side by side to rotate and support the steel 1, a drive motor (not shown) for rotating the feed roller 112, and a drive motor (not shown) Is installed in, and comprises a third encoder 113 (shown in Figure 2) for measuring the rotational speed of the drive motor and outputs to the controller. The third encoder 113 is used to correct an error with respect to the feed rate of the steel 1 measured by the measuring means 120.

The measuring means 120 includes a first gantry 121 installed to intersect the conveying direction of the steel 1, as shown in FIGS. 3 and 4, in order to detect the conveying speed of the steel 1; The first roller 122 installed in the first gantry 121 and rotating in contact with the steel 1, the first roller lifting means 123 for elevating the first roller 122, and the first roller ( The first roller conveying means 124 for conveying the 122 along the first gantry 121 and the first roller 122, and the rotational speed of the first roller 122 to sense the detection signal to the controller And a first encoder 125 for outputting.

The first gantry 121 is installed to be spaced apart on the transfer table 111 so that both ends are fixed to the ground.

The first roller 122 is installed on the first gantry 121 by the first roller elevating means 123, and rotates by contact with the steel material 1 conveyed by the conveying means 110, the steel (stee) It is made of mono cast (MC) nylon in order to prevent slipping from slipping from the steel 1 such as).

The first roller elevating means 123 may have various configurations such as a cylinder or a linear motor for elevating the first roller 122. In this embodiment, the first roller 122 is fixed and guided to the LM guide. A vertical lead screw is screwed to the ball screw provided in the elevating member, and the first roller 122 is elevated together with the elevating member by a ball screw linearly moving along the lead screw by rotating the lead screw by a motor.

The first roller transfer means 124 may be made of a cylinder or a combination of a motor, a lead screw and a ball screw. In this embodiment, the first roller lifting means 123 to which the first roller 122 is coupled. In the state guided by the LM guide, the first roller 122 linearly moves along the first gantry 121 by the rack and pinion for converting the driving force of the motor into linear motion.

The first encoder 125 is installed on the rotating shaft of the first roller 122 which rotates in contact with the steel 1 to detect the rotational speed of the first roller 122 and output it to the controller.

On the other hand, the measuring means 120 is a transfer member 126 and the detection sensor 127a, to detect the steel material 1 in order to calculate the size, position and angle of the steel material 1 conveyed by the conveying means 110 127b, 127c, 127d, and 127e, and the sensor transfer means 128 may be further included.

The transfer member 126 has a "T" bar shape to be attached so that the detection sensors 127a, 127b, 127c, 127d, and 127e are arranged at right angles, and the detection sensors 127a, 127b, 127c, 127d, and 127e. Can be fixed in a desired position by a screw coupled to the position movement so as to see the steel (1) located on the lower side, it is possible to switch the detection angle using a spherical joint, Consistently installed on both sides of the first gantry 121 to move along the first gantry 121, each proximity sensor (not shown) is installed to prevent the collision with each other when moving along the first gantry 121. .

The detection sensors 127a, 127b, 127c, 127d, and 127e are installed in the conveying member 126 to calculate the size, position, and angle of the steel 1 passing through the lower portion of the conveying member 126. Each sensing unit outputs a sensing signal to the control unit. In this embodiment, as shown in FIG. 5, the steel member 1 is arranged in a line at a front end of the transfer member 126 on the side where the steel member 1 enters. Detection sensors (127a, 127b, 127c) for detecting whether the range has been reached, and a sensor for detecting the front end (1a) of the steel (1) is installed at the rear end of the steel member (1) passing through the transfer member 126 A detection sensor 127e installed at the rear end of the transfer member 126 to detect the side end 1b of the steel 1 together with the 127d and a detection sensor 127b positioned at the front end of the transfer member 126. Is made of. Accordingly, the control unit receiving the detection signals from the detection sensors 127a, 127b, 127c, 127d, and 127e calculates the front end 1a and the side end 1b of the steel 1 as coordinates, respectively, to determine the edges of the steel 1 ( O) The position and width and length of the steel material 1 can be calculated, and the angle α between the side end of the steel material 1 and the conveying direction due to the detection of the front end 1a and the side end 1b of the steel material 1 can be calculated. You can get it.

The sensor transfer means 128 may be made of a cylinder or a combination of a motor, a lead screw, a ball screw, and the like to transfer the transfer member 126, and may allow the transfer member 126 to be guided by the LM guide. In this embodiment, the transfer member 126 is provided on both sides of the first gantry 121 by the rack and pinion for converting the driving force of the motor into linear motion while the transfer member 126 is guided to the guide roller. The steel (1) is detected while linearly moving. At this time, the motor is capable of precise position control of the conveying member 126 supported and guided by the guide roller by using the servo motor.

The measuring means 120 recognizes the first roller 122 lifted by the first roller lifting means 123 in order to recognize the entry of the steel material 1 and descend so that the steel material 1 comes into close contact with the steel material 1 in the forward direction of the steel material 1. A first entrance detection sensor 129a for detecting an entry and outputting a detection signal to the controller is installed at the front side of the first roller 122, and the front edge of the steel 1, that is, the horizontal edge in front of the steel 1 is When the steel material 1 stops while not passing through the central axis of rotation of the first roller 122, the shear of the steel material 1 is prevented from being applied mechanically on a vertical line controlling the first roller 122. A first pass detection sensor 129b for detecting passing through the first roller 122 and outputting a detection signal to the controller is installed at the rear side of the first roller 122. Therefore, the downward movement of the first roller 122 is performed after both the first entrance detection sensor 129a and the first passage detection sensor 129b recognize the steel material 1.

delete

As shown in FIGS. 6 and 7, the marking means 130 includes a second gantry 131 installed to intersect the conveying direction of the steel 1 and an ink head 132 installed in the second gantry 131. ), The first head transfer means 133a for transferring the ink head 132 along the second gantry 131, and the transfer direction of the steel material 1 from the second gantry 131 to the ink head 132. And a second head conveying means 133b for conveying accordingly, a head elevating means 133c for elevating the ink head 132, and a head rotating means 133d for rotating the ink head 132. Therefore, the marking means 130 moves the ink head 132 along the X, Y and Z axes by the first and second head transfer means 133a and 133b, the head lifting means 133c and the head rotating means 133d. It moves and rotates.

The second gantry 131 is installed on the transfer table 111 to be parallel to the first gantry 121 and both ends thereof are fixed to the ground.

As shown in FIG. 8, the ink head 132 has a plurality of nozzles 132a and 132b provided on the lower surface of the rectangular parallelepiped, for example, 512 nozzles 132a and 132b which can represent the grade of the steel 1 in color. The ink is marked on the surface of the steel 1 by the opening of a), and has a plurality of nozzles 132a and 132b formed of a plurality of rows that superimpose information such as letters and numbers, and in which rows the nozzles 132a are The nozzles 132b in neighboring rows are arranged to be shifted from each other.

That is, when the ink head 132 is composed of two rows of nozzles 132a and 132b as in this embodiment, the second nozzle 132b forming another row on the opposite side between the first nozzles 132a in one row. Arranged so that the ink head 132 marks information such as letters and numbers primarily by opening the first nozzle 132a when the ink head 132 moves, and then the second nozzle 132b moves the first nozzle 132a. By marking the information marked by the data again, information such as letters and numbers is superimposed, and at this time, the plurality of second nozzles (1), in which a plurality of first nozzles 132a in one row form another row ( The second nozzle 132b is again marked between the marking positions of the first nozzle 132a by being arranged so as to deviate from the 132b so that the distance between the first nozzles 132a and the second nozzles 132b is reduced. For example, if the 4mm has a resolution of 2mm to improve the marking quality.

The first head transfer means 133a may be formed of a cylinder to transfer the second head transfer means 133b provided with the ink head 132 along the second gantry 131, or may include a motor, a lead screw and a ball screw. The ink head 132 may be guided by the LM guide. In this embodiment, the second head transfer means 133b in which the ink head 132 is installed is guided to a bearing guide. The ink head 132 is linearly moved along the second gantry 131 together with the second head transfer means 133b by the rack and pinion for converting the driving force of the motor into the linear motion in the set state.

On the other hand, the bearing guide is eccentric and is tightened by a bolt provided in the center, so that the bearing firmly bites the guide surface to serve as a guide of the second head transfer means 133b.

The second head transfer means 133b is a motor in a state in which the support member 133e of the "a" shape, in which the ink head 132 is installed at the bottom, is guided to reciprocate in a direction orthogonal to the second gantry 131. By the rack and pinion to convert the driving force of the linear motion to the head 132 reciprocating along the conveying direction (A) of the steel (1).

The head lifting means 133c reciprocates the ink head 132 in a vertical direction from the second gantry 131. For this purpose, a cylinder may be used, or various members for converting the driving force of the motor into linear motion may be used. In this embodiment, the ink head 132 reciprocates in the vertical direction by the rack and pinion for converting the driving force of the motor into linear motion.

The head rotating means 133d transmits the rotational force of the motor installed on the upper side at the point where the supporting member 133e and the ink head 132 meet, directly or indirectly through the reduction gear, to the ink head 132. Allow the ink head 132 to rotate within a range of 90 degrees to +90 degrees.

Meanwhile, the marking means 130 is installed on the second gantry 131, and the second roller 134 and the second roller 134 which rotate in contact with the steel 1 entering by the conveying means 110. The second roller lifting means 135 for elevating the second roller, the second roller conveying means 136 for transferring the second roller 134 along the second gantry 131, and the second roller 134. The second encoder 137 detects the rotational speed of the second roller 134 and outputs a detection signal to the controller.

The second roller 134 is installed in the second gantry 131 by the second roller elevating means 135, rotates by contact with the steel 1 conveyed by the conveying means 110, and the steel (1) In order to prevent slipping from), it is made of a material such as MC (mono cast) nylon.

The second roller elevating means 135 may have various configurations such as a cylinder, a linear motor, etc. for elevating the second roller 134. In this embodiment, the second roller 134 is fixed and guided to the LM guide. A vertical lead screw is screwed to the ball screw provided in the elevating member, and the second roller 134 is elevated together with the elevating member by a ball screw which linearly moves along the lead screw by rotating the lead screw by a motor.

The second roller transfer means 136 may be made of a cylinder or a combination of a motor, a lead screw, a ball screw, and the like. In the present embodiment, the second roller lifting means 135 to which the second roller 134 is coupled is provided. The second roller 134 is linearly moved along the second gantry 131 by the rack and pinion for converting the driving force of the motor into linear motion in the state guided by the LM guide.

The second encoder 137 is installed on the rotating shaft of the second roller 134 that rotates in contact with the steel 1 to detect the rotational speed of the second roller 134 and output it to the controller.

Marking means 130 is in the forward direction of the steel material (1) in order to make the second roller 134 raised by the second roller lifting means 135 is in close contact with the steel material (1) to recognize the entry of the steel material (1) A second entrance detection sensor 138a for detecting an entry and outputting a detection signal to the controller is installed at the front side of the second roller 134, and the front edge of the steel 1, i.e., the horizontal edge in front of the steel 1 When the steel material 1 stops while not passing through the central axis of rotation of the second roller 134, the shear of the steel material 1 is prevented from being applied mechanically on a vertical line controlling the second roller 134. A second pass detection sensor 138b for detecting passing through the second roller 134 and outputting a detection signal to the controller is installed at the rear side of the second roller 134. Therefore, the downward movement of the second roller 134 is performed after both the second entry sensor 138a and the second passage detection sensor 138b recognize the steel 1.

Meanwhile, the marking means 130 detects the entry of the steel 1 under the second gantry 131 from one side of the moving path of the steel 1 and outputs a third entry sensor 139 for outputting a detection signal to the controller. It may further include.

The control unit receives the detection signal output from the measurement means 120, and the marking means 130 to transfer and mark the ink head 132 in an oblique direction B (shown in FIG. 1) according to the conveying speed of the steel 1. ) And receive detection signals output from the first and second entry sensors 129a and 138a and the first and second pass detection sensors 129b and 138b, respectively, to receive the first and second rollers 122 and 134. The first and second roller elevating means (123, 135) are respectively controlled so that the steel (1) is in contact with the steel (1) when entering the steel in the forward direction, and so that the steel (1) does not collide when entering the reverse direction.

On the other hand, the control unit is the data input unit 141 for inputting the information of the steel material 1 is input to the conveying means 110 and the data for the labeling data for each steel in accordance with the information of the steel material 1 input to the information input unit 141 Receives the detection signal output from the work file generation unit 142 and the detection sensor 127a, 127b, 127c, 127d, 127e of the measurement means 120, respectively, to generate a work file by extracting from the base 142a. The measurement file 143 measures the size, the position and the inclination angle of the steel 1 and outputs the measured value, and the work file in the position where the steel 1 is placed using the measured value output from the measurement 143. The image generating unit 144 generates an image file, for example, a BMP (bit map) file, for calculating information position values such as letters and numbers, and the ink head 132 using the image file of the image generating unit 144. When opening and closing each of the plurality of nozzles (132a, 132b) provided in a predetermined position By the nozzle control unit 145 for marking information such as letters, numbers, etc. on the steel material 1 and the ink head 132 in accordance with the speed of the conveyed steel material 1 and the first of the marking means 130 and And a head transfer control unit 146 for controlling the second head transfer means 133a and 133b and the head rotation means 133d, respectively.

Referring to the operation of the steel labeling system 100 according to the present invention having such a configuration as follows.

When the steel 1 enters by the conveying means 110, the first roller 122 and the sensing sensors 127a, 127b, 127c, 127d, and 127e of the measuring means 120 move to the ready position, and the measuring unit In 143, the image generator 144 requests the size information of the steel. At this time, when the information of the currently input steel input by the information input unit 141, the work file generation unit 142 matches the steel information input from the information input unit 141 with the labeling file stored in the database 142a It creates and manages job files as well as monitors the system as a whole.

The job file generator 142 outputs the generated job file to the image generator 144, and the image generator 144 transmits steel size information to the measurement unit 143.

Then, the measuring unit 143 performs the measurement motion by the sensor (127a, 127b, 127c, 127d, 127e) of the conveyed steel (1) by the front end (1a) and side end (1b) of the steel (1) ) By calculating the coordinate (O) position of the steel (1) and the width and length of the steel (1), and by detecting the tip (1a) and side (1b) of the steel (1) The angle α, that is, the inclination between the side end and the transfer direction of the steel sheet is measured, and the measured values for the steel 1 are output to the image generator 144.

The image generating unit 144 reflects the measurement value of the measuring unit 143 in the work file to determine information positions such as letters and numbers, and generates image data in the BMP file, and the image data is generated in the nozzle control unit 145. Output to the memory of the nozzle controller 145. At this time, the image data may be made of data corresponding to the length of 1m of the steel 1, for example.

Then, when the steel 1 is detected through the first entry sensor 129a to enter the first roller 1 side, the first roller 1 is the first roller lifting means 123 in the standby position of the upper side It is lowered by the rotation and in contact with the steel material 1, at this time, the rotation speed of the first roller 1 through the first encoder 125 is measured, from which the head feed control unit 146 is a steel material (1) Calculate the feedrate.

On the other hand, the head feed control unit 146 is the second roller descending by the second roller lifting means 135 by the second entry sensor 138a for detecting the steel material 1 is transferred to the second gantry 131 side. The conveying speed of the steel material 1 is calculated from the detection signal output from the second encoder 137 which measures the rotational speed of the second roller 134 by rotating the 134 in contact with the steel material 1. Can be corrected from the third encoder 113 installed in the drive motor (not shown) for rotating the feed roller 112.

Then, when the steel material 1 is transferred to the marking position, the nozzle controller 145 controls the opening and closing of the 512 nozzles 132a and 132b at a predetermined position by using an image file generated as a BMP file. In this case, the head transfer control unit 146 controls the first and second head transfer means 133a and 133b, the head lifting means 133c and the head rotation means 133d, respectively. By controlling the position in the diagonal direction B to follow the ink head 132 according to the conveying speed of 1), the ink head 132 is accurately marked at a desired position in the steel 1 to be conveyed.

On the other hand, the nozzle controller 145 primarily marks the steel 1 by opening and closing the first nozzle 132a forming the first row when marking the steel 1, and the second by the transfer of the ink head 132 The second nozzle 132b forming a row is opened and closed when the marking position of the first nozzle 132a is reached, and the marking is performed in the second marked position. At this time, the first nozzle 132a and the second nozzle 132b are arranged to be offset so that the second nozzle 132b marks again between the marking points of the first nozzle 132a so that the first nozzle 132a can be marked. For example, when the spacing between the second nozzles 132b and the spacing are 4 mm, the resolution may be 2 mm.

At this time, the ink head 132 may mark the steel 1 with color ink in the form of a dotted line or a solid line according to the grade of the steel 1.

As described above, according to a preferred embodiment of the present invention, the marking operation for the steel material may be automated to perform the marking operation in a cutting process, which is a post-process, in advance, thereby reducing the working time in the cutting process, and the like. Marking while moving the ink head according to the feed speed ensures accurate marking at the desired position in the steel and improves the marking quality.

In addition, by accurately measuring the feed speed, position, size, inclination angle, etc. of the steel by the roller and a plurality of sensors to improve the accuracy of the marking position and marking quality.

In addition, the nozzles forming each row in the ink head superimpose the information of letters, numbers, etc. on the steel material so that the marking quality is excellent. As described above, in the detailed description of the present invention, specific embodiments have been described. It is apparent that the technology of the present invention can be easily modified by those skilled in the art, and such modified embodiments will be included in the technical idea described in the claims of the present invention.

1 is a perspective view showing a labeling system of steel according to the present invention,

2 is a block diagram showing a labeling system for steel according to the present invention;

3 is a front view showing the measuring means of the labeling system of steel according to the present invention,

4 is a plan view showing the measuring means of the labeling system of steel according to the present invention,

5 is a view for explaining the sensor sensor operation of the labeling system of the steel according to the present invention,

6 is a front view showing the marking means of the labeling system of steel according to the present invention;

7 is a plan view showing the marking means of the labeling system of steel according to the present invention,

8 is a bottom view showing the ink head of the labeling system of steel according to the present invention.

<Explanation of symbols for the main parts of the drawings>

110: transfer means 111: transfer table

112: feed roller 113: third encoder

120: measuring means 121: first gantry

122: first roller 123: first roller lifting means

124: first roller transfer means 125: first encoder

126: transfer member 127a, 127b, 127c, 127d, 127e: detection sensor

128: sensor transfer means 129a: first entry detection sensor

129b: first pass detection sensor 130: marking means

131: second gantry 132: ink head

132a: first nozzle 132b: second nozzle

133a: first head transfer means 133b: second head transfer means

133c: head lifting means 133d: head rotation means

133e: support member 134: second roller

135 second roller lifting means 136 second roller transfer means

137: second encoder 138a: second ingress detection sensor

138b: second pass sensor 139: third entry sensor

141: information input unit 142: job file generation unit

142a: database 143: measuring unit

144: image generating unit 145: nozzle control unit

146: head feed control

Claims (11)

In the labeling system for marking steel, Conveying means for conveying the steel; Measuring means for detecting a feed rate of the steel; Marking means for marking the ink head which is moved and rotated on the steel conveyed by the conveying means; A control unit which receives the detection signal output from the measuring means and controls the marking means to transfer the marking and transfer the ink head according to the conveying speed of the steel Steel labeling system comprising a. The method of claim 1, The measuring means, A first gantry installed to cross the conveying direction of the steel; A first roller installed in the first gantry and rotating in contact with the steel; First roller elevating means for elevating the first roller; First roller transport means for transporting the first roller along the first gantry; A first encoder installed on the first roller and configured to detect a rotational speed of the first roller and output a detection signal to the controller Steel labeling system comprising a. The method of claim 2, The measuring means, A transfer member installed on both sides of the first gantry to move along the first gantry, A plurality of detection sensors installed in the transfer member and configured to detect the steel and output a detection signal to the controller in order to calculate the size, position, and angle of the steel; Sensor transfer means for transferring the transfer member along the first gantry Steel labeling system comprising a. The method of claim 2 or 3, The measuring means, A first entrance detection sensor installed at a front side of the first roller and configured to detect an entry of the steel and output a detection signal to the controller; A first pass detection sensor installed at a rear side of the first roller and detecting a front end of the steel passing through the first roller and outputting a detection signal to the controller; Steel labeling system comprising a. The method of claim 1, The marking means, A second gantry installed to cross the conveying direction of the steel; An ink head installed in the second gantry, First head conveying means for conveying the ink head along the second gantry; Second head conveying means for conveying the ink head along the conveying direction of the steel from the second gantry; Head lifting means for lifting up and down the ink head; Head rotating means for rotating the ink head Steel labeling system comprising a. The method of claim 5, wherein The marking means, A second roller installed in the second gantry and rotating in contact with the steel; Second roller elevating means for elevating the second roller; Second roller transport means for transporting the second roller along the second gantry A second encoder installed on the second roller and configured to detect a rotational speed of the second roller and output a detection signal to the controller Steel labeling system comprising a. The method of claim 6, The marking means, A second entrance detection sensor installed at a front side of the second roller and detecting an entry of the steel and outputting a detection signal to the controller; A second pass detection sensor installed at a rear side of the second roller and detecting a front end of the steel passing through the second roller and outputting a detection signal to the controller; Steel labeling system comprising a. The method according to any one of claims 5 to 7, The marking means, A third entry detection sensor which detects the entry of the steel on the side of the moving path of the steel and outputs a detection signal to the controller The labeling system of steel further comprising. The method according to claim 1 or 5, The ink head, Has a plurality of nozzles composed of a plurality of rows for superimposing information such as letters and numbers, In which rows of nozzles are arranged so as to deviate from nozzles in neighboring rows Steel labeling system characterized in that. The method of claim 1, The conveying means, A transfer table installed on a transfer path of the steel; A plurality of conveying rollers installed on the conveying table and rotatably supporting the steel; A drive motor for rotating the transfer roller; A third encoder installed at the driving motor and measuring a rotational speed of the driving motor and outputting the measured speed to the controller Steel labeling system comprising a. The method of claim 3, wherein The control unit, An information input unit for inputting information of the steel input to the transfer means; A job file generation unit for generating a job file by extracting the labeling data for each steel material from the database according to the information of the steel input to the information input unit A measuring unit for receiving the sensing signals output from the sensing sensors of the measuring means, respectively, measuring the size, position, and angle of the steel and outputting a measured value; An image generator for generating a character file value of a work file as an image file by using the measured value output from the measuring unit to a position where the steel is placed; A nozzle controller for marking letters, numbers, and the like on the steel by opening and closing each of the plurality of nozzles provided in the ink head by using the image file of the image generator; A head conveying control unit which controls the marking means so that the ink head follows the speed of the conveyed steel; Steel labeling system comprising a.

Images