JP2012081497A - Method and device for displaying identification information of rolled material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for displaying identification information capable of easily identifying identification information provided to a rolled material and easily performing work for changing the steel type and size.SOLUTION: An identification character is printed and inscribed on a screw reinforcement S1 between a pair of identification information displaying rollers 4. The screw reinforcement is rolled by a finish rolling roll R1. Printing portions P1 of the identification information displaying rollers 4 disposed at the exit side of the finish rolling roll are pressed on a free surface S1a that is not reduced by the finish rolling roll, and the identification character which is the identification information indicating the steel type and size is printed and inscribed on the free surface S1a.

Description

  The present invention relates to a method and a display device for displaying identification information indicating the steel type and size of a rolled material on the rolled material.

Deformed steel bars including threaded bars used by construction companies for construction work and civil engineering work are produced at each steelworks based on JIS standards.
As a method of identifying deformed steel bars of different steel types and sizes, bundle several bundles at the time of shipment of deformed steel bars, and attach one or two tags to the entire bundle. In many cases, the steel type and size of the deformed steel bar are identified by indicating the steel type and size of the deformed steel bar on this tag.
When a contractor, such as a construction company, uses a deformed steel bar for construction, unraveling the bundle of the deformed steel bars combined in the above-mentioned multiple bars may cause a mixture of different steel bar sizes and deformed steel bars. In some cases, steel bars are combined to perform rebar construction. In these cases, the rebar is visually selecting the steel type and size of the deformed bar. With visual inspection, it is difficult to quickly identify the steel type and size of each deformed steel bar, and this may cause a problem of using the mixed steel bars and size incorrectly.
As a technique for eliminating this mistake, a deformed reinforcing bar identifying and displaying method disclosed in JP-A-6-47402 has been proposed.
In this prior art, a large number of parallel inclined nodes protrude from the peripheral surface of the deformed reinforcing bar steel body, and a substantially flat portion is provided on the side surface of the deformed reinforcing bar in the axial direction. The substantially flat portion is based on the JIS standard. A rolling mark for identifying and displaying the type of reinforcing bar (such as SD295B to SD490) is formed. This rolling mark is provided with a round protrusion on the surface of the substantially flat portion to indicate the steel type of the deformed reinforcing bar so that it can be identified. The deformed reinforcing bars are successively hot-rolled from the steel ingot to the bar steel, and a rolling mark is formed on the side surface of the bar steel by a rolling roll. In addition, the rolling mark may use numbers, symbols, or the like instead of round protrusions.

JP-A-6-47402

The above-described prior art is effective in displaying the steel type in accordance with the standard of JIS-G3112 without reducing the screwing force of the deformed steel bar, but has the following problems.
First, the steel type of the deformed steel bar is identified through a protruding rolling mark provided on the substantially flat part of the deformed reinforcing bar. However, because the protrusion of the rolling mark is small, it is easy to make a mistake in identifying the steel type. In order to eliminate it, there existed problems, such as requiring time for steel type discrimination.
Secondly, it is necessary to engrave identification information on all the calibers of the rolling roll in order to indicate the identification information of the steel type and size of the rolled material on the rolling roll caliber with symbols such as letters and numbers. If the cost for the work increases or the number of days required for roll processing increases, there are not enough rolls for the rolling schedule, so it is necessary to purchase more rolls and increase the number of rolls held. There was a problem that manufacturing costs were high.
Third, when the identification information display of the deformed steel bar is performed in JIS notation or character notation, it is necessary to engrave characters in the rolling roll caliber. There is a problem that it becomes impossible to roll deformed steel bars of different sizes. In such a steel type change, the operation | work which changes a rolling roll caliber according to a new steel type, or the operation | work replaced | exchanged with the rolling mill according to a new steel type was needed, and the subject which reduced the operation rate of a factory occurred.
In order to solve the above problems, development of a technique for easily identifying the steel type and size of the deformed steel bar and a technique for identifying and displaying the steel type and size independent of the rolling roll has been required.
An object of the present invention is to facilitate identification of identification information provided on a rolled material, and to facilitate an operation of changing the steel type and size.

The method for displaying the identification information of the rolled material of the present invention shows the steel type and size of the rolled material such as screw rebar and deformed bar steel outside the rolling roll on one or two free surfaces where the rolling material is not crushed by the identification information display roller. It is printed as an identification character that is identification information. The method is not limited to screw rebars and deformed steel bars, but can be applied to rolled materials such as round steel. The outside of the rolling roll is the outlet side or the inlet side of the rolling roll, and the rolling roll is preferably a finish rolling roll from the viewpoint of facilitating discrimination of identification information. The identification character includes a character, a symbol, a figure, or the like. The identification information display roller is a pair in order to enable reliable printing on the rolled material, and it is preferable that the printed information is printed on the rolled material passing between the identification information display rollers.
The identification information display device of the present invention includes a roller holder, a pair of identification information display rollers, and a roller pin that rotatably supports each identification information display roller on the roller holder. On one or both of the pair of identification information display rollers, an identification character which is identification information is provided on a free surface which is a rolled material rolled with a finish rolling roll or a rolling roll preceding the roll and which is not reduced. A printing unit for printing is provided. The printing unit includes a plurality of concave or convex printing characters. The said printing part prints the identification character which shows a steel grade and a size on the said free surface of the said rolling roll which passes between both rollers for both identification information display.

According to the present invention, the following effects can be obtained.
1stly, since the identification character which is the identification information which shows the steel kind and size of a rolling material is described on the free surface of the rolling material which is not rolled down by a rolling roll, identification of identification information becomes easy.
Secondly, since the identification information is displayed on the rolled material after being separated from the rolling roll, when changing the steel type and size of the rolled material, changing work such as rolling roll replacement or rolling roll caliber replacement is performed. This eliminates the need to improve the factory operation rate and eliminates the need to engrave identifying information on the steel type and size of the rolled material in the rolling roll caliber. There is an effect that the delivery time can be shortened.

It is a front view which shows the induction | guidance | derivation guide apparatus of the rolling material incorporating the identification information display apparatus of the rolling material which concerns on the 1st Embodiment of this invention. It is an enlarged plan view which shows the rolling guide guide apparatus incorporating the identification information display apparatus of the rolled material which concerns on the 1st Embodiment of this invention. It is an expanded side view which shows the guidance guide apparatus of the rolling material incorporating the identification information display apparatus of the rolling material which concerns on the 1st Embodiment of this invention. It is an expanded side view which shows the relationship between a screw rebar and a pair of identification information display roller which has a printing part. FIG. 2 is an enlarged horizontal sectional view showing a state in which one identification information display roller is rotated 90 degrees clockwise from the position shown in FIG. 1. It is an enlarged front view which shows the principal part of the screw reinforcement which displayed identification information. FIG. 7 is a side view of the screw rebar shown in FIG. 6. It is an enlarged side view which shows the relationship between a deformed steel bar and a pair of identification information display rollers having a printing part. It is an enlarged front view which shows the principal part of the deformed steel bar which displayed identification information. FIG. 10 is a side view of the deformed steel bar shown in FIG. 9. It is a front view which shows the use condition of the identification information display apparatus of the rolling material which concerns on the 2nd Embodiment of this invention. It is a top view which shows the use condition of the identification information display apparatus of the rolling material which concerns on the 2nd Embodiment of this invention. It is a side view of the identification information display apparatus of a rolled material shown in FIG. It is an enlarged plan view which shows the principal part of the other form of the printing part in the identification information display apparatus of the rolled material which concerns on this invention. It is a front view of the printing part shown in FIG.

As shown in FIGS. 1 and 2, the rolled material identification information display method according to the present invention is applied to a free surface S1a that is a rolled material S1 rolled by a finish rolling roll R1 that is a rolling roll and that is not rolled down. The identification information display printing section P1 provided on the identification information display roller is embraced using the identification information display roller 4 and is marked with identification characters as identification information L1 indicating the steel type and size (FIG. 6).
The rolled material S1 includes screw rebars and deformed steel bars. And although it is desirable to stamp the identification information L1 at the position of the exit side of the finish rolling roll R1 with respect to the rolling material S1, it may be stamped at the entrance side, and the rolling roll in the previous stage of finish rolling may be marked. It may be stamped on the exit side. The printing character P1a of the printing part P1 is formed in a concave shape or a convex shape. For this reason, the identification character L1 that is engraved with the printing character is a concave character or a convex character.

A rolled material identification information display device M1 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 7 together with a rolled material guiding guide device G1 incorporating the rolled material identification information display device M1.
1 to 3 is arranged on the exit side of the finish rolling roll R1, and the rolled material rolled by the finishing rolling roll, in the illustrated example, the screw rebar S1 is shown on the right side. It leads to the direction. The guide device G1 includes a guide box 1 in which a roller holder 2 is provided. The roller holder 2 has a front end portion (left end portion in FIG. 1) pivoted on one side 1a of the guide box 1 and a rear end portion (right end portion in FIG. 1) pivoted on the other side portion 1b of the guide box. It is pivotally supported. In the roller holder 2, a pair of guide rollers 3 for guiding the screw rebar S1 and a pair of identification information display rollers 4 for displaying the identification information L1 on the free surface S1a of the screw rebar are provided. It arrange | positions in an adjacent state along the advancing direction (FIG. 1 right direction).
As shown in FIGS. 1 and 2, the pair of guide rollers 3 is pivotally supported by the roller holder 2 via eccentric roller pins 5. A pinion 7 meshes with a worm 5a screwed on the top of the eccentric roller pin 5 via a pedestal 8 so as to be rotatable. For this reason, the distance between the pair of guide rollers 3 can be adjusted via the worm 5 a and the eccentric roller pin 5 by the turning operation of the pinion 7.

In the identification information display device M <b> 1 shown in FIGS. 1 to 3, the pair of identification information display rollers 4 is pivotally supported by the roller holder 2 via eccentric roller pins 6. A pinion 9 meshes with a gear wheel 6 a screwed on the top of the eccentric roller pin 6 via a pedestal 10 so as to be rotatable. For this reason, the distance between the pair of identification information display rollers 4 can be adjusted via the gear wheel 6 a and the eccentric roller pin 6 by rotating the pinion 9.
In the pair of identification information display rollers 4 shown in FIG. 4, in the illustrated example, one (right side of the figure) identification information display roller is not rolled down by the finish rolling roll R <b> 1 (FIG. 1). A printing portion P1 for displaying identification information for displaying an identification character L1 as identification information is provided on a free surface S1a which is a flat surface of the screw rebar S1 shown. As shown in FIG. 5, the printing portion P1 is composed of a plurality of printing characters P1a. In the illustrated example, the printing portion P1 is composed of concave printing characters. For this reason, the identification character L1 printed on the free surface S1a of the screw rebar S1 by the printing part P1 is a convex character L1a as shown by a chain line in FIG. As shown in FIG. 6, the identification character L1 has a size = N29 and a steel type = 490 on the free surface S1a of the screw rebar S1 as a convex character L1a.
The marking on the free surface S1a of the screw rebar S1 by the printing part P1 rotates in the direction of the arrow in FIG. 5 in the process of guiding the identification information display roller 4 while merging the threaded reinforcing bar. Will print the identification character L1 on the free surface of the screw rebar.

  1, a delivery guide 11 is provided on the exit side (right side in the drawing) of the finish rolling roll R1 of the guide box 1 and a cylindrical guide 12 is provided on the opposite side (right side). It is. Moreover, as shown in FIGS. 1-3, the pinion 13 for enabling the inclination angle of the roller holder 2 to be adjusted is provided in the exit side of the finish rolling roll R1 of the guide box 1. As shown in FIG. The pinion 13 is supported by a support portion 1c that stands on the one side portion 1a of the guide box 1. Further, the pinion 13 meshes with a worm gear 2 a provided on the roller holder 2. For this reason, the roller holder 2 can be turned around the axis by the turning operation of the pinion 13, and the inclination angle thereof can be adjusted. The worm gear 2 a and the pinion 13 constitute an adjustment mechanism for adjusting the inclination angle of the roller holder 2.

A method of displaying the identification character L1 indicating the steel type and size as identification information on the screw rebar S1 will be described with reference to FIGS. 1 to 2 and FIGS.
The free surface S1a of the screw rebar S1 that is not rolled down by the finish rolling roll R1 by previously rotating the pinion 7 and the pinion 9 in advance to set the distance between the pair of guide rollers 3 and the distance between the pair of identification information display rollers 4 to each other. It is adjusted so that the spacing is almost the same as the width of both sides.
In the process of guiding the screw rebar S1, the guide roller 3 ties both the free surfaces S1a of the screw rebar S1 and guides the screw rebar toward the identification information display roller 4 so that the screw rebar is not twisted. When the two-surface width portion of the screw rebar is brought into contact with the identification information display roller 4 on which the printing portion P1 for displaying the identification information according to the steel type and size of the screw rebar is brought into contact, the identification information display roller shown in FIG. As the direction rotates, an identification character L1 indicating the steel type and size of the screw rebar is gradually engraved as a convex character L1a on the free surface S1a of the screw rebar by the concave printing character P1a of the printing portion P1, that is, a screw. It is transcribed on the reinforcing bar.
The identification character L1 engraved on the free surface S1a of the screw rebar S1 by the identification information display roller 4 may be a concave character. In this case, the printing character P1a of the printing part P1 in the identification information display roller 4 is formed in a convex shape.
In the example shown in FIGS. 4 and 5, the printing character P1a of the printing portion P1 is provided only on one of the pair of identification information display rollers 4, but it is provided on both sides on the free surface S1a on both sides of the screw rebar S1. Each of the identification characters L1 may be printed.

The identification information display method in the case where the object of the rolled material guided by the rolled material induction guide device G1 is a deformed steel bar will be described with reference to FIGS. 1 to 2 and 8 to 10.
In using the identification information display method, the pair of identification information display rollers 4 in the rolling material guide guide apparatus G1 shown in FIGS. 1 and 2 is replaced in advance with the pair of identification information display rollers 14 shown in FIG. Keep it. Then, in this state, the pinion 7 and the pinion 9 are respectively rotated so that the distance between the guide roller 3 and the distance between the identification information display rollers 14 is substantially the same as the free surface S2a of the deformed bar S2 that is not reduced by the finish rolling roll R1. Adjust so that the intervals are the same.
The guide roller 3 includes the free surface S2a that is not squeezed by the finish rolling roll R1 of the deformed steel bar S2, and correctly guides the deformed steel bar toward the identification information display roller 14. Then, as shown in FIGS. 8 and 9, the identification information display roller 14 having the printing portion P2 for printing the identification character L2 indicating the steel type and size of the deformed steel bar is not crushed by the finished steel roll of the deformed steel bar. When contacting the surface, the steel size and steel type identification character L2 is transferred to the deformed steel bar as a convex character L2a by the concave printing character P2a of the printing portion of the identification information display roller 14.
As shown in FIG. 8, the printing portion P2 of the identification information display roller 14 has a concave shape for indicating the steel size D29 and the steel type 345 as the printing character P2a for indicating the steel type and size of the rolled material. Since the character is provided, when the deformed steel bar comes into contact with the identification information display roller 14, as shown in FIG. 9, the convex character L2a indicating D29 345 which is the deformed steel bar identification character L2 is transferred to the free surface S2a. Is written.
The printing character P2a of the printing part P2 formed on the identification information display roller 14 may be concave as in the example shown in FIG. 5 or may be convex. However, the concave shape is desirable from the viewpoint of maintaining the strength of the deformed steel bar S2.

A rolled material identification information display device M11 according to a second embodiment of the present invention will be described with reference to FIGS. 11 to 13 together with a rolling material guiding guide device G11 provided therewith.
The rolled material identification information display device M11 is separated from the rolled material guide guide device G11, and is arranged on the exit side of the finish rolling roll R2 adjacent to the rolled material guide device G11. This is different from the rolled material identification information display device M1 incorporated in the device G1.
Since the basic configuration and arrangement position of the rolled material identification information display device M11 are the same as those of the rolled material identification information display device M1, differences will be mainly described, and the common portions will be described as necessary. I will explain.

11 to 13, the rolled material identification information display device M <b> 11 is provided with a roller holder 116 on a base 115. The pair of identification information display rollers 104 is rotatably supported by a roller holder 116 via eccentric roller pins 106. A pinion 109 is engaged with a gear wheel 106 a screwed on the top of the eccentric roller pin 106 through a pedestal 110 so as to be rotatable. For this reason, the rotation of the pinion 109 makes it possible to adjust the distance between the pair of identification information display rollers 104 via the gear wheel 106 a and the eccentric roller pin 106.
11 and 12, one identification information display roller of the pair of identification information display rollers 104 has identification information on the free surface S3a of the screw rebar S3 which is a rolled material that is not rolled by the finish rolling roll R2. A printing portion P3 for displaying identification information for displaying characters is provided. As shown in FIG. 11, the printing part P3 is composed of a plurality of printing characters P3a, and is configured with concave printing characters so that the free surface S3a of the screw rebar S3 can be expressed as size = N29 and steel type = 490. Yes.
The marking on the free surface S3a of the screw rebar S3 by the printing unit P3 rotates in the process of guiding the identification information display roller 104 while linking the screw rebar, so the printing character P3a of the printing unit P3 is rotated in the process of rotation. In the example shown in FIG. 11, “N29 490” is printed on the free surface of the screw rebar.
In FIG. 11, 117 is an entry guide, and 118 is a cylindrical guide.

The rolled material identification information display device M11 will be described with reference to FIGS.
The rolling material guiding guide device G11 is substantially the same as the rolling material guiding guide device G1. The substantial difference is a configuration in which the guide guide device G11 for the rolled material leaves the pair of guide rollers 3 from the guide guide device G1 for the rolled material, and removes the pair of identification information display rollers 4. In other words, in the rolling material guide apparatus G11, the roller holder 102 is provided with the pair of guide rollers 103, but the pair of identification information display rollers is not provided.
Guide box 101, side portions 101a and 101b, support portion 101c, roller holder 102, worm gear 102a, pair of guide rollers 103, eccentric roller pin 105, worm 105a, pinion 107, pedestal 108, delivery in the guide guide device G11 for rolled material The guide 111, the guide 112, and the pinion 113 are a guide box 1, a side portion 1a, 1b, a support portion 1c, a roller holder 2, a worm gear 2a, a pair of guide rollers 3, an eccentric roller pin 5, The worm 5a, pinion 7, pedestal 8, delivery guide 11, guide 12 and pinion 13 are respectively supported.

A rolling material identification information display method by the rolled material identification information display device M11 will be described.
As shown in FIG. 11, the screw rebar S3 rolled by the finish rolling roll R2 enters the delivery guide 111 of the guide guide device G11 arranged on the outlet side, and the pair of guide rollers 103 is the finishing rolling roll R2. The free surface S3a that is not crushed is conjugated and guided to the guide 112 side, and is guided out of the guide device. The screw rebar S3 guided to the outside enters the entry guide 117 of the identification information display device M11 and proceeds toward the identification information display roller 104, and the identification information display roller having the printing portion P3 is the screw rebar. When abutting against the free surface, the identification information of the steel size and steel type is transferred to the free surface S3a of the screw rebar S3 as a convex identification character by the concave printing character P3a of the printing portion of the identification information display roller. Is written.
In the example shown in FIG. 11, “N29 490” is printed as an identification character on the free surface S3a of the rolled material S3.

When changing the steel grade or size, conventionally, rolling is stopped and the rolling mill is replaced with a new steel grade or size, or the steel roll mark is changed, and then rolling of the new steel grade is started. However, in the identification information display device M1 of the present invention shown in FIG. 1, a rolled material incorporating an identification information display device that has been adjusted offline in advance according to the new steel type and size. What is necessary is just to replace | exchange the guidance guide apparatus and the guidance guide apparatus G1 of the rolling material incorporating the identification information display apparatus currently used until now. In addition, according to the identification information display device M11 of the present invention shown in FIG. 11, the identification information display device that has been adjusted in advance offline according to the new steel type and size is replaced with the identification information display device M11 that has been used so far. It ’s fine. By such exchange, the rolling efficiency can be greatly improved.
Conventionally, the identification information indicating the steel type of the rolled material (screw rebar, deformed bar, etc.) has been expressed by the number of round protrusions defined by JIS, and there was no description indicating the size, but the identification information display of the present invention According to the devices M1 and M11, the steel characters and sizes are identified through the printing portions P1, P2, and P3 provided on the identification information display rollers 4, 14, and 104 (identification characters L1 in FIG. 6 and identification characters in FIG. 9). Since it is written as letter L2), it is easy to identify the steel type and size.
According to the identification information display devices M1 and M11 of the present invention, when the rolled material is the screw rebars S1 and S3, the free surfaces S1a and S3a that are not reduced by the finish rolling rolls R1 and R2 are flat, Since identification characters are displayed as identification information by characters on the flat portion, there is no problem in screwing the screw joint of the screw rebar.

As another form of the printing unit, in the example shown in FIGS. 14 and 15, the printing characters of the printing unit P4 are configured by a typeface P4a. The typeface P4a is accommodated in both or one of the pair of identification information display rollers so as to be separated upward from the one identification information display roller 204 in the illustrated example. The printed body P4a is fitted in a storage groove 204a formed from the outer peripheral surface of the identification information display roller 204 to the inside and from the upper end surface downward. The storage groove 204a is provided with a step portion 204a1. The surface of the typeface P4a is exposed from the outer peripheral surface of the identification information display roller 204. The printed body P4a is provided with a recess P4a1 facing the inner side from both sides on the rear side (upper side in FIG. 14). Since the stepped portion 204a1 is fitted between the concave portions P4a1, the typeface P4a is prevented from being detached from the outer peripheral surface of the storage groove 204a. A printing character portion P4a2 is formed by a concave groove on the front surface of the printed body P4a. The printing character portion P4a2 indicates “N” in the illustrated example.
For example, when the printing character of the printing part P4 is “N29 490” as shown in FIG. 4, “N”, “2”, “9”, “4”, “9”, “0” are respectively set. Six types of typefaces P4a having printed character portions P4a2 that are engraved are prepared, and each typeface is formed in the storage groove 204a formed along the outer peripheral surface of the identification information display roller 204 from the upper end surface. Drop it.
Only one character “N” may be displayed on the printing character portion P4a2 of each typeface P4a. However, the present invention is not limited to this. For example, two characters “N2” or three characters “N29” are displayed. The number of combinations is appropriate. The printing character portion P4a2 is formed by a concave groove, but may be formed by a convex groove.

The printing of the identification information on the rolled material S1, S2, S3 by the identification information display devices M1, M11 is not limited to the exit side of the finish rolling roll, and may be on the entrance side, or rolling on the front stage side of the finish rolling roll. It may be the exit side of the roll.
In the example shown in the figure, the printing portions P1, P2, and P3 are provided on one of the pair of identification information display rollers 4, 14, and 104, but may be provided on both. The printing characters P1a, P2a, and P3a in the printing portions P1, P2, and P3 are concave or convex as described above. The identification character (identification character L1 in FIG. 6 and identification character L2 in FIG. 9) may be a symbol or a figure in addition to the character.

G1, G11 Rolling material guide apparatus L1, L2 Identification characters (identification information)
L1a, L2a Convex characters M1, M11 Identification information display devices P1, P2, P3, P4 Printing part P1a, P2a, P3a Printing characters P4a Typeface (printing characters)
P4a2 Printing character part R1, R2 Finishing roll (rolling roll)
S1, S3 Screw rebar (rolled material)
S2 deformed steel bar (rolled material)
S1a, S2a, S3a Free surface 1 Guide box 1a One side part of guide box 1b Other side part of guide box 2 Roller holder 2a Worm gear 3 Guide roller 4 Identification information display roller 5 Exen roller pin 6 Exen roller pin 6a Gear wheel 9 Pinion DESCRIPTION OF SYMBOLS 10 Pedestal 14 Identification information display roller 116 Roller holder 104 Identification information display roller 106 Exen roller pin 106a Gear wheel 109 Pinion 110 Pedestal 116 Roller holder 204 Identification information display roller 204a Storage groove

Claims (13)

  Identification information indicating the steel type and size on the free surface by pressing the printing portion of the identification information display roller on the free surface of the rolled material that is rolled by a rolling roll and not rolled down by the rolling roll. An identification information display method for rolled material, characterized in that the identification character is   The rolled material identification information display method according to claim 1, wherein the rolled material is printed with identification characters between a pair of identification information display rollers.   The rolled material identification information display method according to claim 1 or 2, wherein the rolled material to be printed is rolled by a finish rolling roll.   4. The rolled material identification information display method according to claim 1, wherein the rolled material to be printed is a screw rebar.   The identification information display method for rolled material according to any one of claims 1 to 4, wherein the identification character printed by the printing unit is either a concave character or a convex character. A roller holder, a pair of identification information display rollers, and a roller pin that rotatably supports each identification information display roller on the roller holder,
At least one of the pair of identification information display rollers is provided with a printing unit for printing identification characters as identification information on a free surface that is a rolled material rolled by a rolling roll and is not reduced. ,
An identification information display device for a rolled material, wherein the printing unit prints and displays an identification character indicating a steel type and a size on the free surface of the rolling roll passing between both identification information display rollers.   7. The rolled material identification information display device according to claim 6, wherein the roller pin is an eccentric roller pin, and a distance between the pair of identification information display rollers can be adjusted by a pin operation.   The roller holder also serves as a roller holder for the rolling material guiding guide device. In this roller holder, a pair of guide rollers is axially supported via a roller pin adjacent to the pair identification information display roller. 8. The rolled material identification information display device according to claim 6 or 7, wherein the rolled material identification information display device is provided.   9. The identification information display device for rolled material according to claim 6, wherein the pair of identification information display rollers is disposed on the exit side of the finish rolling roll.   The rolled material identification information display device according to any one of claims 6 to 9, wherein the printing character of the printing portion in the identification information display roller is either concave or convex.   The rolled material identification information display device according to any one of claims 6 to 9, wherein the characters displayed on the rolled material by the printed characters of the printing portion in the identification information display roller are convex characters. .   The printing characters of the printing unit in the identification information display roller are formed of a typeface, and the typeface is detachably stored in a storage groove formed in the identification information display roller. The rolled material identification information display device according to any one of claims 6 to 11.   The rolled material identification information display device according to any one of claims 6 to 12, wherein the rolled material is selected from a screw rebar and a deformed steel bar.

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