JP5298551B2 - Steel pipe stamping equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a marking device for steel pipe with which the appearance quality of a UOE steel pipe is improved and the manufacturing cost is reduced by marking identification codes making the depth of the marking and the position of the making uniform on the surface to be marked of the UOE steel pipe independently pf the degree of skillfulness of marking work of workers. <P>SOLUTION: This marking device 3 for steel pipe includes: a making machine 4 having a marking pin for marking the identification codes on the surface 2a to be marked of the UOE steel pipe 2p; a first member 5 which is arranged abutting on the outside 2b of the UOE steel pipe 2; and a second member 6 with which the marking machine 4 is supported and also the marking pin is directed at the same angle to any surface to be marked of a plurality of kinds of the UOE steel pipe having different inclined angles by being arranged inclining to the first member 5 at an angle in accordance with the inclined angle which is formed by the outside 2b and the surface 2a to be marked on a longitudinal section of the UOE steel pipe 2. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a steel pipe stamping device, and more particularly to a steel pipe stamping device for stamping an identification code on a predetermined marking surface on a pipe end surface of a steel pipe, for example, in a manufacturing process of a UOE steel pipe.

  The UOE steel pipe is stamped with an identification code on a predetermined marking surface on the pipe end face in the manufacturing process in order to identify the specifications of the steel pipe at the site where it is laid. The identification number relates to various information such as a charge number or a unique number depending on the method of use at the site. Also, the marking surface is various, such as one of the tube end surfaces or both of the tube end surfaces.

  6 (a) and 6 (b) are explanatory views showing the shape of the pipe end surfaces of the UOE steel pipes 1 and 2 in a simplified manner. The UOE steel pipe 1 shown in FIG. 6 (a) has a marking surface 1a on the tube end surface, where the tube end angle α defined as an inclination angle formed by the outer surface 1b of the tube end portion and the marking surface 1a is more than 90 °. On the other hand, the UOE steel pipe 2 shown in FIG. 6B is a faced steel pipe whose pipe end face angle α is 90 ° and the marking face 2a on the pipe end face is not inclined.

  Conventionally, the marking operation on the marking surfaces 1a and 2a of the UOE steel pipes 1 and 2 is performed by the operator (i) confirming the contents of the identification code for each steel pipe to be marked, and (ii) marking the identification code. A punch corresponding to the identification code to be engraved is selected from a number of punches provided, and (iii) this punch is positioned at a predetermined position on the engraving surfaces 1a and 2a, and then manually identified by a hammer. A character is engraved, and (iv) the above-mentioned items (ii) and (iii) are repeated for all the identification codes to be engraved, so that each character is performed.

  As described with reference to FIGS. 6 (a) and 6 (b), the UOE steel pipe includes the beveled steel pipe 1 with the marking surface 1a inclined and the facing steel pipe 2 with the marking surface 2a not inclined, In particular, the pipe end angle α in the beveled steel pipe 1 is not constant, for example, 102.5 °, 122.5 °, 135 °, and 150 °, depending on the specifications of the UOE steel pipe. It is difficult to stamp in a state where the punch is positioned so as to be arranged perpendicular to the marking surface 1a, which is a difficult operation.

  For this reason, although depending on the skill level of the stamping work by the operator, the stamping depth and the stamping position of the stamped identification code may not be uniform, and the stamped identification code is not visually unified, so the UOE steel pipe Contributes to the deterioration of the appearance quality.

  In addition, since this stamping work is performed manually by the operator, not only the work efficiency is low, but also an erroneous stamping due to a mistake in punch selection occurs. A correction work or the like when the stamp is generated is also necessary, which is a cause of increasing the manufacturing cost of the UOE steel pipes 1 and 2.

  The object of the present invention is to provide an identification code by aligning the marking depth and the marking position on a predetermined marking surface on the pipe end face for various steel pipes having different pipe end angles without depending on the skill of the marking work by the operator. Further, it is possible to improve the appearance quality of the UOE steel pipe and reduce the manufacturing cost of the UOE steel pipe.

  In the present invention, at the time of engraving work, an identification code is imprinted on the steel material on the engraving surfaces 1a and 2a of various steel pipes having different pipe end angles such as the above-described facing steel pipe 2 as well as the steel pipe 1 with a bevel surface. By using a jig that can be easily and surely arranged at a certain angle (for example, vertical), a stamping machine that is commonly used for this purpose is stamped by a stamping machine supported by this jig. This is based on a novel finding that the above-described problems can be solved.

The present invention relates to a stamping machine having a marking pin for marking an identification code on a marking surface on a pipe end surface of a UOE steel pipe, and a first member disposed in contact with an outer surface of a pipe end including the marking surface. And supporting the marking machine, and inclining with respect to the first member at an angle corresponding to the inclination angle formed by the outer surface of the pipe end and the marking surface in the longitudinal section of the UOE steel pipe And a second member for directing a marking pin at a certain angle with respect to any marking surface of a plurality of types of UOE steel pipes having different inclination angles. According to this steel pipe marking device according to the present invention, the marking pins can be oriented at the same angle with respect to any marking surface of a plurality of types of UOE steel pipes having different inclination angles. The stamping depth and the stamping position can be made uniform, the stamped identification codes can be visually unified, and deterioration of the appearance quality of the UOE steel pipe can be prevented.

In the steel pipe marking device according to the present invention, in the longitudinal section of the UOE steel pipe, the position of the second member in the direction parallel to the marking surface in the longitudinal section of the UOE steel pipe is variable with respect to the first member. It is desirable to be arranged in. This makes it possible to set the stamped position of the stamped identification code to a desired position.

  Furthermore, the steel pipe marking device according to the present invention includes a control device for determining the content of marking for any one steel pipe based on a database relating to the steel pipe to be stamped and instructing the stamping machine. desirable. As a result, it is possible to eliminate a decrease in work efficiency and an error in the contents of the marking caused by the manual work of the operator, and to reduce the manufacturing cost of the steel pipe.

  According to the present invention, an identification code is imprinted on a predetermined marking surface on a pipe end face with respect to various steel pipes having different pipe end angles without depending on the skill of the marking work by an operator. Further, it is possible to improve the appearance quality of the UOE steel pipe and reduce the manufacturing cost of the UOE steel pipe.

  BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best mode for carrying out a steel pipe marking device according to the present invention will be described in detail with reference to the accompanying drawings. In the following description of the embodiments, a case where the steel pipe is a UOE steel pipe is taken as an example.

  FIG. 1 is a perspective view showing a part of the marking device 3 of the present embodiment in a simplified manner while being partially seen through. FIG. 2 is a side view showing a part of the marking device 3 shown in FIG. 1 in a simplified manner. The UOE steel pipe 2 in FIGS. 1 and 2 is a facing steel pipe 2 in which the marking surface 2a is not inclined. Further, FIG. 3 is an explanatory view showing a situation in which the marking operation is performed on the beveled steel pipe 1 having a pipe end angle α exceeding 90 ° using the marking device 3 shown in a simplified manner as in FIG. 2. .

Since the marking device 3 according to the present embodiment includes a stamping machine 4, a first member 5, and a second member 6, these configurations will be described first.
[Engraving machine 4]
As the stamping machine 4 in the present embodiment, a well-known and conventional stamping machine that has been conventionally used for stamping identification codes on stamping surfaces of various steel materials may be used.

  A supplementary explanation of the conventional stamp 4 will be given briefly. The stamping machine 4 has a marking pin 4a (not shown in FIG. 1 for ease of reading the drawing) for marking an identification code on the marking surface 2a of the UOE steel pipe 2. In general, two or four marking pins 4a are provided in a direction parallel to the marking direction of the identification code. For example, an 8-digit identification code is stamped using two marking pins 4a. Each marking pin has an identification code of the first to fourth digits engraved by one marking pin 4a and an identification code of the fifth to eighth digits is engraved by the other marking pin 4b. The engraving range is divided every time.

  The structure and the like of the stamping machine 4 are well known to those skilled in the art, and in the present invention, it is not necessary to limit the marking machine 4 to a stamping machine having a specific structure or the like. .

The marking machine 4 in the marking device 3 in the present embodiment is configured as described above.
[First member 5]
The first member 5 is a box composed of a pair of substantially L-shaped side plates 7a and 7b arranged opposite to each other and a top plate 7c connecting them. The top plate 7c is fixed to the side plates 7a and 7b by appropriate means such as welding.

The side plates 7a and 7b are respectively provided with elongated holes 8a and 8b through which thumbscrews 12 and 13 (described later) pass vertically upward.
When the bottom portions of the side plates 7a and 7b are both in contact with the outer surface 2b of the pipe end portion including the marking surface 2a of the UOE steel pipe 2, the first member 5 is disposed in contact with the outer surface 2b.

The first member 5 in the marking device 3 in the present embodiment is configured as described above.
[Second member 6]
The second member 6 is a box composed of a pair of side plates 9a and 9b arranged opposite to each other and a bottom plate 9c connecting them, and the engraving machine 4 is accommodated and supported therein. The bottom plate 9c is fixed to the side plates 9a and 9b by appropriate means such as welding. Further, the distance between the outer surfaces of the side plates 9 a and 9 b is set slightly smaller than the distance between the inner surfaces of the side plates 7 a and 7 b of the first member 5.

  As shown in a partially enlarged plan view extracted by a white arrow in FIG. 1, a screw hole 10 for screwing the butterfly screw 12, a butterfly, and a pair of side plates 9 a and 9 b are opposed to each other. Screw holes 11a to 11e for screwing the screw 13 are provided. The screw holes 11 a to 11 e are provided on an arc centered on the center of the screw hole 10. The screw hole 11a is provided at a position vertically above the screw hole 10, and the screw holes 11b to 11e are inclined at 12.5 °, 32.5 °, 45 °, and 60 ° with respect to the vertically upward direction, respectively. Provided at the position.

  As shown in FIG. 3, the second screw 12 is screwed into the screw hole 10 and the thumbscrew 13 is screwed into one of the screw holes 11 b to 11 e. The member 6 is disposed to be inclined with respect to the first member 5.

  1 and 2 show a state in which the thumbscrew 12 is screwed into the screw hole 10 and the thumbscrew 13 is screwed into the screw hole 11a. In this case, as shown in FIGS. 1 and 2, the bottoms of the side plates 7a and 7b of the first member 5 are in contact with the outer surface 2b of the UOE steel pipe 2 which is a facing steel pipe, and the side plate 9a of the second member 6 is used. 9b abuts on the marking surface 2a of the UOE steel pipe 2, whereby the marking pin 4a of the marking machine 4 is arranged in a direction perpendicular to the marking surface 2a.

  Next, when the wing screw 13 is changed to be screwed into the screw hole 11 b from the state shown in FIG. 1, the second member 6 is 12.5 relative to the first member 5 with the screw hole 10 as the center. ° In a rotated position, tilted. In this case, as shown in FIG. 3, the bottoms of the side plates 7a and 7b of the first member 5 contact the outer surface of the UOE steel pipe 1 which is a steel pipe with a bevel surface with a pipe end angle α of 102.5 °. The side plates 9a and 9b of the second member 6 are in contact with the marking surface 1a of the UOE steel pipe 1, so that the marking pin 4a of the marking machine 4 is arranged in a direction perpendicular to the marking surface 1a. The

  Further, when the thumbscrew 13 is changed to be screwed into the screw holes 11c, 11d, or 11e, the second member 6 is 32.5 °, 45 ° with respect to the first member 5 with the screw hole 10 as the center. Alternatively, it is disposed at an angle at a position rotated by 60 °. In this case, as shown in FIG. 3, the bottom of the side plates 7a and 7b of the first member 5 is a UOE having a beveled steel pipe having a tube end portion angle α of 122.5 °, 135 ° or 150 °. The side plates 9a and 9b of the second member 6 abut against the outer surface of the steel pipe 1 and abut the marking surface 1a of the UOE steel pipe 1, whereby the marking pin 4a of the marking machine 4 is perpendicular to the marking surface 1a. It is arranged in the direction.

  As described above, the second member 6 has the longitudinal section of the UOE steel pipes 1 and 2 by screwing the thumbscrew 12 to the screw hole 10 and screwing the butterfly screw 13 to any one of the screw holes 11a to 11e. Inside, it inclines with respect to the 1st member 5 by the angle according to the inclination angle which the outer surface 1b, 2b and the marking surface 1a, 2a of a pipe end part make. Accordingly, the second member 6 is a plurality of types of UOE steel pipes having different inclination angles, that is, steel pipes with beveled surfaces having pipe end angle α of 102.5 °, 122.5 °, 135 °, or 150 °. For both a UOE steel pipe 1 and a UOE steel pipe 2 which is a facing steel pipe having a pipe end angle α of 90 °, the marking pin 4a is oriented at the same angle (90 degrees) with respect to the marking surfaces 1a and 2a. Can be made.

  In the present embodiment, the butterfly screws 12 and 13 pass through the long holes 8a and 8b and are screwed to any of the screw holes 10 and 11a to 11e. Therefore, the butterfly in the longitudinal direction of the long holes 8a and 8b is used. By changing the penetration positions of the screws 12 and 13, the second member 6 is positioned in a direction parallel to the marking surfaces 1a and 2a in the longitudinal section of the UOE steel pipes 1 and 2 with respect to the first member 5. Can be arranged variably. Thereby, the stamp height position of the stamped identification code can be adjusted to a desired position.

The second member 6 is configured as described above.
Although the marking device 3 according to the present embodiment is configured as described above, the control device 14 may be further provided. Therefore, the control device 14 will also be described.
[Control device 14]
FIG. 4 is an explanatory diagram of the control device 14 constituting the marking device 3 of the present embodiment.

First, an instruction of the marking content 16 is manually input to the host CPU 15 and transferred to the process controller 17.
In the process control 17, a charge number, a plate identification number, a steel pipe identification number, a manufacturing history, and the like are accumulated every time each process passes. Moreover, it has the tracking processing system which grasps | ascertains the position of the steel pipes 1 and 2 in a manufacturing process.

  Unlike the conventional method in which the Procon 17 installed in the stamping workshop displays the stamped content data on the monitor to let the stamping worker confirm and manually stamp each character one by one, the UOE steel pipes 1 and 2 are brought in. If it does, the data 18 of the marking content with respect to this UOE steel pipes 1 and 2 will be transmitted to the control apparatus 14, and will be transmitted to the stamping machine 4 from the control apparatus 14. FIG. At this time, along with the marking contents, it is also specified whether the marking position is one end face of the UOE steel pipes 1 and 2 or both end faces.

  When the UOE steel pipes 1 and 2 to be engraved are transferred to the engraving work site and the data 18 related to the UOE steel pipes 1 and 2 is transferred to the control device 14, the engraving apparatus 3 uses the UOE steel pipe based on the data 18. Engraving work for 1 and 2.

  In this way, the control device 14 determines the marking contents for any one of the UOE steel pipes 1 and 2 based on the database related to the UOE steel pipes 1 and 2 to be stamped, and instructs the stamping machine 4.

  The marking device 3 according to the present embodiment is configured as described above. Next, the present embodiment will be described with reference to FIG. 5 which is an explanatory diagram showing a situation in which the UOE steel pipes 1 and 2 are stamped by the stamping device 3 according to the present embodiment and FIGS. The contents of the marking work by the marking device 3 in the form of will be described.

First, an instruction of the marking content 16 is manually input to the host CPU 15 and transferred to the process control 17 installed in the marking work place.
The process controller 17 reads that the UOE steel pipes 1 and 2 have been conveyed to the stamping device 3 based on a signal input from a sensor (not shown), and data 18 of the stamp contents for the UOE steel pipes 1 and 2 (the stamping position is UOE steel pipe). 2 is also transmitted to the control device 14 from the control device 14, and the stamping machines 4A and 4B provided at both ends of the UOE steel pipes 1 and 2 are transmitted to the control device 14. Send to. In the description of the present embodiment, the case where the marking positions are both end faces is taken as an example.

  In this embodiment, since the handy type stamping machines 4A and 4B are used, the operator conveys the stamping machines 4A and 4B to the stamping positions on both ends of the UOE steel pipes 1 and 2. The stamping machines 4A and 4B are configured identically.

  In the engraving operation, first, the butterfly screw 12 is screwed into the screw hole 10 and the butterfly screw 13 is screwed into the screw holes 11a to 11e according to the inclination angle formed between the outer surfaces 1b and 2b of the pipe end and the engraving surfaces 1a and 2a. The second member 6 is arranged at a predetermined angle in the longitudinal section of the UOE steel pipes 1 and 2 with respect to the first member.

  Specifically, when the inclination angle α is 90 °, the wing screw 12 is screwed into the screw hole 10 and the wing screw 13 is screwed into the screw hole 11a. When the tilt angle is 102.5 °, 122.5 °, 135 ° or 150 °, the thumbscrew 12 is screwed into the screw hole 10 and the thumbscrew 13 is screwed into the screw holes 11b, 11c, 11d or 11e. Screw on to.

  Thereafter, the bottoms of the side plates 7a, 7b of the first member 5 in the marking device 3 of the present embodiment are brought into contact with the outer surfaces 1b, 2b of the pipe end portion including the marking surfaces 1a, 2a of the UOE steel pipes 1, 2. Then, the marking device 3 is moved to a predetermined position by moving the marking device 3 until the side plates 9a, 9b of the second member 6 abut against the marking surfaces 1a, 2a of the UOE steel pipes 1, 2. In this state, the marking pins of the marking machine 4 are arranged in a direction perpendicular to the marking surfaces 1a and 2a.

  Further, if necessary, the engraved surface in the longitudinal section of the UOE steel pipes 1 and 2 is obtained by temporarily loosening the thumb screws 12 and 13 and changing the penetrating position of the thumb screws 12 and 13 in the longitudinal direction of the long holes 8a and 8b. By changing the position of the second member 6 relative to the first member 5 in the direction parallel to 1a and 1b, the marking height position of the identification code to be stamped is finely adjusted to a desired position.

  Accordingly, the second member 6 is a plurality of types of UOE steel pipes having different inclination angles, that is, steel pipes with a bevel surface having a pipe end portion angle α of 102.5 °, 122.5 °, 135 °, or 150 °. For both the UOE steel pipe 1 and the UOE steel pipe 2 which is a faced steel pipe having a pipe end angle α of 90 °, the marking pin 4a can be oriented at the same angle with respect to the marking surfaces 1a and 2a. .

  In this state, the stamping machine 3 is positioned and the stamping operation is performed, so that the stamping depth and the stamping position can be set on the stamping surfaces 1a and 2a of the steel pipes 1 and 2 without depending on the skill level of the stamping work by the operator. Since the identification code can be engraved in alignment, the appearance quality of the UOE steel pipes 1 and 2 imprinted with the identification code can be improved.

  The marking device 3 according to the present embodiment thus includes the marking machines 4A and 4B, the first member 5 and the second member 6, and the tube end angle α is 102.5 °, 122.5 °, The UOE steel pipe 1 which is a 135 ° or 150 ° beveled steel pipe and the UOE steel pipe 2 which is a facing steel pipe having a pipe end angle α of 90 ° are both engraved on the marking surfaces 1a and 2a. Since the pins 4a can be oriented at the same angle, it is possible to ensure that the marking depth and the marking position of the identification codes stamped on the marking surfaces 1a and 2a of these UOE steel pipes 1 and 2 are constant. Become.

  Furthermore, the marking device 3 according to the present embodiment includes the control device 14 and determines an identification code to be stamped on any one of the UOE steel pipes 1 and 2 by outputting based on the database. It is possible to eliminate a decrease in work efficiency and an error in the contents of stamping due to manual work, and the manufacturing cost of the UOE steel pipes 1 and 2 can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a marking device of an embodiment in a simplified manner while seeing through a part thereof. It is a side view which simplifies and shows a part of marking apparatus shown in FIG. It is explanatory drawing which shows the condition which performs a stamping operation | work with respect to the steel pipe with a bevel surface whose pipe edge part angle (alpha) exceeds 90 degrees using the marking apparatus simplified and shown similarly to FIG. It is explanatory drawing of the control apparatus which comprises the marking apparatus of embodiment. It is explanatory drawing which shows the condition which performs the stamping operation | work with respect to a UOE steel pipe by the marking apparatus of embodiment. 6 (a) and 6 (b) are explanatory views showing the shape of the pipe end face of the UOE steel pipe in a simplified manner.

Explanation of symbols

1 Steel pipe with beveled surface (UOE steel pipe)
2 Facing steel pipe (UOE steel pipe)
1a, 2a Marking surface 1b, 2b Outer surface 3 Marking device 4, 4A, 4B Marking machine 4a Marking pin 5 First member 6 Second member 14 Control device 7a, 7b Side plate 7c Top plate 8a, 8b Slot 9a, 9b Side plate 9c Bottom plate 10 Screw holes 11a to 11e Screw holes 12, 13 Thumb screw 14 Controller 15 Database

Claims (2)

An engraving machine having an engraving pin for imprinting an identification code on the engraving surface on the pipe end surface of the UOE steel pipe;
A first member disposed in contact with the outer surface of the pipe end including the marking surface;
In addition to supporting the stamping machine, the UOE steel pipe is inclined with respect to the first member at an angle corresponding to an inclination angle formed by the outer surface of the pipe end and the marking surface in the longitudinal section of the UOE steel pipe. And a second member for directing the marking pin at a certain angle with respect to any marking surface of a plurality of types of UOE steel pipes having different inclination angles. apparatus. In the longitudinal section of the UOE steel pipe, the 2nd member is variably arranged with respect to the first member in the direction parallel to the marking surface in the longitudinal section of the UOE steel pipe. 1. A steel pipe stamping device according to 1.

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