JP2016079435A - Working and rust prevention device and working and rust prevention method of steel pipe end - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent rust from occurring on a processing surface formed by subjecting the end surface and the end portion of a welded steel pipe to beveling work and shaping work and/or cutting work.SOLUTION: A working and rust prevention device of a steel pipe end includes: (i-1) a beveling working device for beveling the end surface of a steel pipe, on the outer periphery or the inner periphery of a surface board which rotates around a pipe axis of a welded steel pipe and moves forward or backward to the welded steel pipe; as needed, (i-2) one or both of an end shaping device for cutting and removing welded excessive portion and/or deposit generated on the outer peripheral surface or inner peripheral surface of the steel pipe end, and a projection cutting device for cutting and removing projections which are continuously formed on the outer peripheral surface or inner peripheral surface of the steel pipe end; and (ii) a rust-preventive treatment device for subjecting the beveled surface formed by the beveling working device to a rust-preventive treatment.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a processing / rust prevention device and a processing / rust prevention method for performing groove processing or groove processing and cutting processing on an end surface and an end of a welded steel pipe, and further applying a rust prevention treatment to the processing surface. Is.

  In recent years, large-diameter welded steel pipes are widely used in the fields of civil engineering and architecture. For example, a large-diameter steel pipe having protrusions (hereinafter sometimes referred to as “stripes”) formed on the outer peripheral surface and / or inner peripheral surface, or a large-diameter steel pipe having spiral protrusions formed on the outer peripheral surface (hereinafter referred to as “stripe”). "Striped steel pipe" is sometimes used as a foundation pile buried in the soil.

  When a large diameter steel pipe is used as a foundation pile, it is necessary to connect a large diameter steel pipe. When connecting large-diameter steel pipes, usually a relay jig is attached to both ends (connection portions) of the large-diameter steel pipe, both steel pipes are fixed, and both ends are welded. In welding, in order to improve work efficiency, a groove processing is performed on the end face of the steel pipe in advance, and unnecessary matters (stripes, surpluses, etc.) are removed from the outer peripheral face of the end of the steel pipe.

  When attaching a relay jig to a welded steel pipe that does not have protrusions, cut off and remove weld deposits and deposits to the required width, and when attaching a relay jig to a striped steel pipe, spiral protrusions The (stripe) is cut and removed with a required width (for example, see Patent Documents 1 and 2).

  Grooves and cuts on the end faces and ends of welded steel pipes are performed outdoors or indoors (for example, in steel pipe factories) other than the construction site. ) Usually begins to rust immediately after processing. The generated rust expands during transportation of the steel pipe.

  And even if there is even a little rust on the machined surface during welding, the arc becomes unstable at the rust portion, resulting in poor welding. As a result, the required strength cannot be ensured at the welded steel pipe joint. Therefore, after applying groove processing and cutting to the end face and end of the welded steel pipe, a rust inhibitor is applied to the processed surface. In the meantime, rust is generated on the processed surface waiting for application.

Japanese Patent Laid-Open No. 06-182614 JP2013-132718A

  An object of the present invention is to prevent the occurrence of rust on a processed surface formed by performing groove processing, shaping processing and / or cutting processing on an end surface and an end portion of a welded steel pipe. An object of the present invention is to provide a processing / rust prevention apparatus and a processing / rust prevention method that solve the above-mentioned problems.

  The inventor has intensively studied a method for solving the above problems. As a result, (i-1) groove processing device and anticorrosive coating device, or (i-2) end portion on the rotating face plate that is pressed to perform the required processing on the end portion and end surface of the welded steel pipe It has been found that if a processing (shaping and / or cutting) device, a groove processing device, and a rust preventive agent applicator are arranged, a rust preventive agent can be immediately applied to the processed surface to suppress the occurrence of rust. .

  The present invention has been made based on the above findings, and the gist thereof is as follows.

(1) On the outer periphery or inner periphery of the face plate that rotates around the tube axis of the welded steel pipe and moves forward or backward relative to the welded steel pipe,
(I-1) provided with a groove processing device for processing a groove on the end surface of the steel pipe, and
(Ii) A steel pipe end portion processing / rust prevention device comprising a rust prevention treatment device for performing a rust prevention treatment on a groove surface formed by a groove processing device.

(2) Rotate around the pipe axis of the welded steel pipe, and on the outer circumference or inner circumference of the face plate that moves forward or backward relative to the welded steel pipe,
(I-1) Equipped with a groove processing device that processes the groove on the end face of the steel pipe,
(I-2) An end shaping device that cuts and removes weld deposits and / or deposits generated on the outer peripheral surface or inner peripheral surface of the steel pipe end and continuously formed on the outer peripheral surface or inner peripheral surface of the steel pipe One or both of a protrusion cutting device that cuts and removes the protrusions formed, and
(Ii) A rust preventive treatment device is provided that performs a rust preventive treatment on one or both of the groove surface formed by the groove processing device, the shaping surface formed by the end shaping device, and the cutting surface formed by the protrusion cutting device. Steel pipe end processing and rust prevention device.

  (3) The steel pipe end machining / rust prevention device according to (1) or (2), wherein the face plate is installed indoors.

  (4) One or two or more scanning rolls rotating along the outer surface or the inner surface of the steel pipe are provided on the outer periphery or the inner periphery of the face plate, according to any one of (1) to (3), Steel pipe end processing / rust prevention equipment.

  (5) The profiling roll is provided so as to face each other across a line connecting the groove processing device and the end shaping device or the protrusion cutting device, or a line connecting the groove processing device and the antirust treatment device. The processing / rust prevention apparatus of the steel pipe end part as described in said (4).

  (6) The processing / rust prevention device for a steel pipe end portion according to any one of (1) to (5), wherein two or more groove processing devices are provided on an outer periphery or an inner periphery of the face plate. .

  (7) The steel pipe end processing / rust prevention device according to (6), further comprising a rust prevention treatment device adjacent to the two or more groove processing devices.

  (8) The steel pipe end processing / rust prevention device according to any one of (1) to (7), wherein the rust prevention treatment device is a device that applies or sprays a rust prevention liquid.

  (9) In any one of the above (1) to (8), a cutting tool presser that presses the back of the end shaping device and / or the projection cutting device is provided on the outer periphery or the inner periphery of the face plate. Steel pipe end processing and rust prevention equipment as described.

  (10) Any one of the above (1) to (9), wherein one or more of the groove processing device, the end shaping device, the protrusion cutting device, and the antirust treatment device include a copying roll. A processing / rust prevention device for the end of a steel pipe.

  (11) The steel pipe end processing / rust prevention device according to any one of (1) to (10), wherein the protrusion is formed in a spiral shape.

  (12) Using the steel pipe end portion processing / rust prevention device according to any of (1) to (11) above, (a) groove processing of the steel pipe end surface, (b) outer peripheral surface of the steel pipe end portion, and It is characterized in that the end shaping and / or protrusion cutting of the inner peripheral surface and / or (c) the groove forming surface and the rust prevention treatment to the end shaping surface and / or the protruding cutting surface are simultaneously performed. Processing and rust prevention of steel pipe ends.

  ADVANTAGE OF THE INVENTION According to this invention, generation | occurrence | production of rust can be prevented in the process surface formed by giving a groove process and shaping process and / or cutting process to the end surface and edge part of a welded steel pipe. As a result, when welding the steel pipe end, the arc is stable and no welding failure occurs, so that the welding work efficiency at the construction site is improved.

End shaping and / or projection cutting of the outer peripheral surface and / or inner peripheral surface of the steel pipe end, and groove processing of the steel pipe end surface, and at the same time, the end shaping surface and / or the projection cutting surface, and the groove It is a figure which shows typically the whole one aspect | mode of the process and rust prevention apparatus which performs a rust prevention process to a process surface. It is a figure which shows the side cross section of a process and an antirust apparatus provided with a groove processing apparatus and an antirust processing apparatus. It is a figure which shows the side cross section containing an edge part shaping device and a groove processing apparatus of an edge shaping device, a groove processing apparatus, and a processing and rust prevention apparatus provided with a rust prevention processing apparatus. It is a figure which shows the side cross section containing a rust prevention processing apparatus and a groove processing apparatus of an edge shaping device, a groove processing apparatus, and a processing and rust prevention apparatus provided with a rust prevention processing apparatus. It is a figure which shows the side cross section containing an edge part shaping device and a groove processing apparatus of another process and rust prevention apparatus provided with an edge shaping device, a groove processing apparatus, and a rust prevention processing apparatus. It is a figure which shows the side cross section containing a rust prevention processing apparatus and a groove processing apparatus of another process and rust prevention apparatus provided with an edge part shaping device, a groove processing apparatus, and a rust prevention processing apparatus. It is a figure which shows the side cross section containing an edge shaping device and a groove processing apparatus of a process and rust prevention apparatus provided with a protrusion cutting device, a groove processing device, and a rust prevention processing device. It is a figure which shows the side cross section containing a rust prevention processing apparatus and a groove processing apparatus of a process cutting / rust prevention apparatus provided with a protrusion cutting device, a groove processing device, and a rust prevention processing device. It is a figure which shows the example of arrangement | positioning of a groove processing apparatus, an edge part shaping apparatus or protrusion cutting apparatus, a rust prevention processing apparatus, and a copying roll. It is a figure which shows the example of arrangement | positioning of a groove processing apparatus, an edge part shaping apparatus or a protrusion cutting apparatus, and a rust prevention processing apparatus. It is a figure which shows another example of arrangement | positioning of a groove processing apparatus, an edge part shaping apparatus or protrusion cutting apparatus, a rust prevention processing apparatus, and a copying roll. It is a figure which shows another example of arrangement | positioning of a groove processing apparatus, an edge part shaping apparatus or protrusion cutting apparatus, a rust prevention processing apparatus, and a copying roll. It is a figure which shows another example of arrangement | positioning of a groove processing apparatus, an edge part shaping apparatus or protrusion cutting apparatus, a rust prevention processing apparatus, and a copying roll.

The steel pipe end processing and rust prevention device of the present invention (hereinafter sometimes referred to as “the present invention device”) rotates around the pipe axis of the welded steel pipe and advances or reverses with respect to the welded steel pipe. On the outer circumference or inner circumference of
(I-1) provided with a groove processing device for processing a groove on the end surface of the steel pipe, and
(Ii) characterized by comprising a rust preventive treatment device for performing a rust preventive treatment on the groove surface formed by the groove processing device;
(I-1) Equipped with a groove processing device that processes the groove on the end face of the steel pipe,
(I-2) An end shaping device that cuts and removes weld deposits and / or deposits generated on the outer peripheral surface or inner peripheral surface of the steel pipe end and continuously formed on the outer peripheral surface or inner peripheral surface of the steel pipe One or both of a protrusion cutting device that cuts and removes the protrusions formed, and
(Ii) A rust preventive treatment device is provided that performs a rust preventive treatment on one or both of the groove surface formed by the groove processing device, the shaping surface formed by the end shaping device, and the cutting surface formed by the protrusion cutting device. It is characterized by that.

  The steel pipe end machining / rust prevention method of the present invention (hereinafter also referred to as “the present invention method”) uses the apparatus of the present invention to: (a) groove processing of the steel pipe end face; (b) steel pipe end Simultaneously perform end shaping and / or protrusion cutting of the outer peripheral surface and / or inner peripheral surface of the metal, and (c) rust prevention treatment to the groove processing surface and the end shaping surface and / or protrusion cutting surface. It is characterized by.

  First, an embodiment of the device of the present invention will be described with reference to the drawings.

  FIG. 1 shows the end shaping and / or projection cutting of the outer peripheral surface and / or inner peripheral surface of the steel pipe end portion and the groove processing of the steel pipe end surface, and at the same time, the end shaping surface and / or the projection cutting surface. And the whole one aspect | mode of the process and an antirust apparatus which performs an antirust process to a groove processing surface is shown typically.

  Several portions of one end (left end portion) of the welded steel pipe 1 are fixed by a steel pipe fixing means 4 provided on the face plate 2 of the chamfering machine 3. Since the chamfering machine 3 on the fixed side can advance and retreat on the rail 8 provided on the base 7 on the foundation 6 by the hydraulic mechanism 5, the fixing position of the end of the steel pipe can be adjusted by the length of the welded steel pipe 1. Since the face plate 2 is rotatable, an appropriate fixing point can be selected at the end of the steel pipe.

  A chamfer 9 of the chamfering machine 10 is pressed by a hydraulic mechanism 13 at one end of the steel pipe. The chamfering machine 10 on the processing side can be advanced and retracted by the hydraulic mechanism 5 on the rail 8 provided on the base 7 on the movable base floor 14.

  An end shaping device 11 having a cutting tool and a copying roll 12 are attached to the outer periphery of the face plate 9, and the copying roll 12 rotates the end shaping device 11 along the outer circumference or inner circumference of the steel pipe end. As an example, the end of the steel pipe is shaped with high accuracy.

  In the case of a welded steel pipe, there are weld surpluses and / or deposits (cutting nose, weld spatter, etc.) on the outer peripheral surface or inner peripheral surface of the steel pipe. The inner peripheral surface is cut within a required range (a width in which a relay jig can be attached, for example, 100 to 150 mm) to remove welding surplus and / or deposits. By this cutting and removal, the end portion of the steel pipe can be shaped with high accuracy.

  In the case of a striped steel pipe in which protrusions are continuously formed on the outer peripheral surface or inner peripheral surface of the welded steel pipe, a protrusion cutting device is used as the end processing device, and the outer peripheral surface or inner peripheral surface of the steel pipe end portion is within a required range ( Cutting with a width capable of attaching the relay jig (for example, 100 to 150 mm) to remove the protrusion. By this cutting and removal, the end portion of the steel pipe can be shaped with high accuracy.

  When welding surplus and deposits are present on the outer peripheral surface or inner peripheral surface of the striped steel pipe, both the end shaping device and the projection cutting device may be attached to the face plate.

  In the processing / rust prevention device shown in FIG. 1, the groove processing device and the rust prevention device are not shown, but the groove processing device and the rust prevention device are provided at predetermined positions on the outer periphery or inner periphery of the face plate 9. Has been placed. The arrangement of the groove processing device, the end shaping device and / or the protrusion cutting device, and the rust prevention device on the face plate will be described later.

  As described above, the device of the present invention includes (1) (i-1) a groove processing device for processing a groove on the end surface of a steel pipe, and (ii) a groove surface formed by the groove processing device. (2) (i-1) Equipped with a groove processing device that processes the groove on the end surface of the steel pipe, (i-2) The outer peripheral surface or the inner side of the end of the steel pipe An end shaping device that cuts and removes weld deposits and / or deposits (cutting nose, weld spatter, etc.) generated on the peripheral surface, and a protrusion formed continuously on the outer peripheral surface or inner peripheral surface of the steel pipe (Ii) a groove surface formed by a groove processing device, a shaping surface formed by an end shaping device, and a cutting surface formed by a protrusion cutting device. Since one or both of them are equipped with a rust-proofing device that performs rust-proofing, it is possible to carry out rust-proofing of the groove surface, shaping surface and cutting surface simultaneously. You can.

  In the case of a striped steel pipe, if the stripes are cut and removed after the groove processing, the groove shape may be distorted by the stress at the time of cutting and removing. This tendency becomes more prominent as the diameter of the striped steel pipe becomes larger. In addition to lowering processing costs, (y) rust is generated on the shaping surface, cutting surface, and groove surface, so that the welding quality at the construction site can be ensured and the efficiency of the welding work is improved, and the work period is improved. Is shortened.

  The embodiment of the apparatus of the present invention will be specifically described.

  FIG. 2 shows a side cross-section of a processing / rust prevention device provided with a groove processing device and a rust prevention treatment device. The processing / rust prevention device shown in FIG. 2 is applied to a welded steel pipe having no protrusions, weld surpluses, and deposits (cutting nose, welding spatter, etc.) to be removed by cutting on the outer peripheral surface or inner peripheral surface of the steel pipe. It is a processing / rust prevention device.

  A base 9a and a base 9b are attached to the outer periphery of the rotatable face plate 9 on the steel pipe side so as to face each other. Two sub-bases 9c are attached to the base 9a in the radial direction, and two sub-bases 9d are attached to the base 9b in the radial direction.

  A groove processing device 15 for processing a groove on the end surface of the steel pipe is attached to the inner child base 9d. The groove processing device 15 may include a copying roll (not shown) in order to stabilize the groove processing. The groove shape processed by the groove processing device 15 is not limited to a specific groove shape. In the striped steel pipe, a Y groove is mainly used.

  On the outer child base 9c and the inner child base 9c, a rust preventive treatment device 18 that applies a rust preventive treatment to a groove surface processed by the groove processing device 15 (hereinafter sometimes simply referred to as “groove surface”). Is attached. The rust preventive treatment device 18 holds the rust preventive liquid feeding device 18a with an upper frame 18c attached to the outer child base 9c and a lower frame 18d attached to the inner child base 9c.

  The rust preventive liquid feeding device 18a is held by a holding tool 18f attached to the inner child base 9c and comes into contact with the groove surface, and the rust preventive liquid is continuously applied to the applicator 18e that applies the rust preventive liquid to the groove surface. To supply. The applicator 18e is not particularly limited to a specific applicator, but is preferably a brush or a roll. A spray tube can also be used. A copying roll 18b is attached to the inner base 9c in order to stabilize the application of the rust preventive liquid to the groove surface by the applicator 18e.

  A telescopic support arm 16a is attached to the center of the face plate 9, and a steel pipe holder 16 for stably holding the steel pipe is attached to the tip of the support arm 16a. The support arm 16a expands and contracts as the face plate 9 moves back and forth, and stably holds the steel pipe during the processing of the steel pipe end and end face.

  Although not shown in FIG. 2, in order to perform the groove processing smoothly and accurately, the copying roll may be arranged at an appropriate position of the face plate separately from the copying roll 18b.

  As described above, since the groove surface is subjected to the rust prevention treatment by the rust prevention treatment device 18 while the face plate 9 is rotated, the groove surface is covered with the rust prevention liquid and rust is not generated.

  FIG. 3 shows a side cross-section including an end shaping device and a groove processing device of a processing / rust prevention device provided with an end shaping device, a groove processing device, and a rust prevention processing device.

  An end shaping device 11 that cuts and removes the weld overlay and / or deposits generated on the inner peripheral surface of the steel pipe end is attached to the inner child base 9c. The end shaping device 11 includes a cutting tool 11c that cuts and removes the welding surplus and / or deposits, and a cutting tool that pushes up the cutting tool 11c from the back surface and equalizes the cutting height of the welding surplus and / or deposits. It consists of a presser 11b.

  The outer child base 9c is in contact with the outer surface of the steel pipe 1 and is paired with the cutting tool 11c to stabilize the welding surplus and / or the removal of deposits and smooth surface (hereinafter referred to as “shaped surface”). A copying roll 11a for forming the recording medium 11) is attached.

  A groove processing device 15 for processing a groove on the end face of the steel pipe is attached to the inner child base 9d facing the inner child base 9c. The groove processing by the groove processing device 15 is performed on the end surface of the steel pipe on which the shaping surface is formed by the cutting tool 11c. Therefore, a highly accurate groove shape without distortion can be formed on the end face of the steel pipe.

  The groove processing device 15 may be provided with a copying roll itself to stabilize the groove processing. The groove shape processed by the groove processing device 15 is not limited to a specific groove shape. In the striped steel pipe, a Y groove is mainly used.

  Since the face plate 9 and the copying roll appropriately disposed on the face plate 9 are as described above, the description thereof will be omitted below.

  Next, a description will be given of a rust preventive treatment device that performs a rust preventive treatment on a shaping surface formed by an end shaping device and a groove surface formed by a groove processing device.

  FIG. 4 shows a side cross section of the processing / rust prevention device shown in FIG. 3 including the rust prevention treatment device and the groove processing device. A shaping surface formed by the end shaping device 11 and a groove machining device on the outer child base 9c and the inner child base 9c adjacent to the parent base 9a on which the end shaping device 11 is placed. A rust preventive treatment device 18 that applies a rust preventive treatment to the groove surface formed in 15 is attached.

  In FIG. 4, although the arrangement | positioning aspect which arrange | positions the rust prevention processing apparatus 18 adjacent to the edge shaping apparatus 11 was shown, arrangement | positioning of an edge shaping apparatus, a groove processing apparatus, and a rust prevention processing apparatus is the above-mentioned. It is not limited to the arrangement mode. The arrangement of the end shaping device, the groove processing device, and the rust preventive treatment device will be described later, including the copying roll that is appropriately arranged.

  The rust prevention treatment device 18 holds the rust prevention liquid feeding device 18a with an upper frame 18c and a lower frame 18d attached to the inner child base 9c. The rust preventive liquid feeding device 18a is held by a holder 18f attached to the inner child base 9c and abuts against the groove surface, and an applicator 18e for applying a rust preventive liquid to the groove surface and a lower frame 18d. The rust preventive liquid is continuously supplied to the applicator 18e which is held and abuts the shaping surface and applies the rust preventive liquid to the shaped surface.

  Also in this case, the applicator 18e is not particularly limited to a specific applicator, but is preferably a brush or a roll. A spray tube can also be used. A copying roll 18b is attached to the outer base 9c in order to stabilize the application of the rust preventive liquid to the shaping surface and the groove surface by the applicator 18e.

  As described above, while the face plate 9 rotates, the end shaping device 11 cuts and removes the weld surplus and / or deposits generated on the inner peripheral surface of the steel pipe end portion, and the groove processing device. Since the groove processing is performed on the end face of the steel pipe at 15, a highly accurate groove shape can be formed with high work efficiency, and the processing cost is reduced.

  Further, while the face plate 9 is rotated, the anti-rust treatment device 18 applies the anti-rust treatment to the shaping surface and the groove surface at the same time as the cutting removal and the groove processing. Time required for rust treatment is shortened.

  In FIG. 5, the side cross section containing an edge part shaping device and a groove processing apparatus of another process and rust prevention apparatus provided with an edge shaping device, a groove processing apparatus, and a rust prevention processing apparatus is shown. The outer base 9c is attached with an end shaping device 11 that cuts and removes weld deposits and / or deposits generated on the outer peripheral surface of the steel pipe end.

  The end shaping device 11 pushes the cutting tool 11c from the back surface to cut and remove the welding surplus and / or deposits, and equalizes the cutting height of the welding surplus and / or deposits to make the cutting smooth. It comprises a cutting tool presser 11b for shaping.

  The inner slave 9c is in contact with the inner surface of the steel pipe 1 and is paired with the cutting tool 11c, and a copying roll for forming a smooth shaped surface by stabilizing the welding surplus and / or the removal of deposits. 11a is attached.

  A groove processing device 15 for processing a groove on the end face of the steel pipe is attached to the inner child base 9d facing the inner child base 9c. The groove processing by the groove processing device 15 is performed on the end surface of the steel pipe on which the shaping surface is formed by the cutting tool 11c. Therefore, a highly accurate groove shape without distortion can be formed on the end face of the steel pipe.

  The groove processing device 15 may be provided with a copying roll itself to stabilize the groove processing. The groove shape processed by the groove processing device 15 is not limited to a specific groove shape. In the striped steel pipe, a Y groove is mainly used.

  Next, a description will be given of a rust preventive treatment device that performs a rust preventive treatment on a shaping surface formed by an end shaping device and a groove surface formed by a groove processing device.

  FIG. 6 shows a side cross section of the processing / rust prevention device shown in FIG. 5 including the rust prevention treatment device and the groove processing device. A shaping surface formed by the end shaping device 11 and a groove machining device on the outer child base 9c and the inner child base 9c adjacent to the parent base 9a on which the end shaping device 11 is placed. A rust preventive treatment device 18 that applies a rust preventive treatment to the groove surface formed in 15 is attached.

  In FIG. 6, although the arrangement | positioning aspect which arrange | positions the rust prevention processing apparatus 18 adjacent to the edge shaping apparatus 11 was shown, arrangement | positioning of an edge shaping apparatus, a groove processing apparatus, and a rust prevention processing apparatus is the above-mentioned. It is not limited to the arrangement mode. The arrangement of the end shaping device, the groove processing device, and the rust preventive treatment device will be described later, including the copying roll that is appropriately arranged.

  The rust preventive treatment device 18 holds the rust preventive liquid feeding device 18a with an upper frame 18c attached to the outer child base 9c and a lower frame 18d attached to the inner child base 9c. The rust preventive liquid feeding device 18a includes an applicator 18e that is held by a holder 18f attached to the inner child base 9c and abuts against the groove surface and applies a rust preventive liquid to the groove surface, and an inner child base. The rust preventive liquid is continuously supplied to the applicator 18e which is held by the lower frame 18d attached to 9c and abuts against the shaping surface and applies the rust preventive liquid to the shaping surface.

  Also in this case, the applicator 18e is not particularly limited to a specific applicator, but is preferably a brush or a roll. A spray tube can also be used. A copying roll 18b is attached to the inner base 9c in order to stabilize the application of the rust preventive liquid to the shaping surface and the groove surface by the applicator 18e.

  As described above, while the face plate 9 rotates, the end shaping device 11 cuts and removes the weld buildup and / or deposits generated on the outer peripheral surface of the steel pipe end portion, and the groove processing device 15. Since the groove processing is performed on the end surface of the steel pipe, a highly accurate groove shape can be formed with high work efficiency, and the processing cost is reduced.

  Further, while the face plate 9 is rotated, the anti-rust treatment device 18 applies the anti-rust treatment to the shaping surface and the groove surface at the same time as the cutting removal and the groove processing. Time required for rust treatment is shortened.

  In FIG. 7, the side cross section containing an edge part shaping device and a groove processing apparatus of a process cutting / rust prevention apparatus provided with a protrusion cutting device, a groove processing device, and a rust prevention processing device is shown. A protrusion cutting device 17 that cuts and removes the protrusion 1a formed continuously on the outer peripheral surface of the steel pipe end is attached to the outer child base 9c. The protrusion cutting device 17 cuts and removes the protrusion 1a, and presses the cutting tool 17c from the back surface to equalize the cutting height of the protrusion 1a (hereinafter sometimes referred to as “cutting surface”). It is comprised by the cutting tool holder 17b for forming.

  A copying roll 17a is attached to the inner child base 9c, which is on the inner surface of the steel pipe 1 and is paired with the cutting tool 17c to stabilize the removal of the protrusion 1a and form a smooth cutting surface. .

  A groove processing device 15 for processing a groove on the end face of the steel pipe is attached to the inner child base 9d facing the inner child base 9c. The groove processing by the groove processing device 15 is performed on the end surface of the steel pipe from which the protrusion 1a is cut and removed by the cutting tool 17c. Therefore, a highly accurate groove shape without distortion can be formed on the end face of the steel pipe.

  The groove processing device 15 may be provided with a copying roll itself to stabilize the groove processing. The groove shape processed by the groove processing device 15 is not limited to a specific groove shape. In the striped steel pipe, a Y groove is mainly used.

  Next, a description will be given of a rust preventive treatment device that performs a rust preventive treatment on a cut surface formed by a protrusion cutting device and a groove surface formed by a groove processing device.

  FIG. 8 shows a side cross section of the processing / rust prevention device shown in FIG. 7 including the rust prevention treatment device and the groove processing device. A cutting surface formed by the protrusion cutting device 17 and a groove processing device 15 are formed on the outer child base 9c and the inner child base 9c adjacent to the parent base 9a on which the protrusion cutting device 17 is placed. A rust preventive treatment device 18 for performing a rust preventive treatment is attached to the groove surface.

  Although the arrangement | positioning aspect which adjoins the protrusion cutting apparatus 17 was shown in FIG. 8, the arrangement | positioning of a protrusion cutting apparatus, a groove processing apparatus, and a rust prevention processing apparatus is not limited to the said arrangement | positioning aspect. The arrangement of the projection cutting device, the groove processing device, and the rust preventive treatment device will be described later, including the copying roll that is appropriately arranged.

  The rust preventive treatment device 18 holds the rust preventive liquid feeding device 18a with an upper frame 18c attached to the outer child base 9c and a lower frame 18d attached to the inner child base 9c. The rust preventive liquid feeding device 18a includes an applicator 18e that is held by a holder 18f attached to the inner child base 9c and abuts against the groove surface and applies a rust preventive liquid to the groove surface, and an inner child base. The anticorrosive liquid is continuously supplied to the applicator 18e which is held by the lower frame 18d attached to 9c and abuts against the cutting surface and applies the anticorrosive liquid to the cutting surface.

  Also in this case, the applicator 18e is not particularly limited to a specific applicator, but is preferably a brush or a roll. A spray tube can also be used. A copying roll 18b is attached to the inner base 9c in order to stabilize the application of the rust preventive liquid to the cutting surface and the groove surface by the applicator 18e.

  As described above, while the face plate 9 rotates, the protrusion cutting device 17 cuts and removes the protrusions continuously formed on the outer peripheral surface of the welded steel pipe, and the groove processing device 15 applies the cutting to the steel pipe end surface. Since the groove processing is performed, a highly accurate groove shape can be formed with high work efficiency, and the processing cost is reduced.

  Further, while the face plate 9 rotates, the cutting surface and the groove surface are subjected to rust prevention treatment by the rust prevention treatment device 18 simultaneously with the above-described cutting removal and groove processing, so Time required for rust treatment is shortened.

  Next, the arrangement of the groove processing device, the end shaping device and / or the protrusion cutting device, the rust prevention device, and the inner surface copying roll will be described.

  In FIG. 9, the example of arrangement | positioning of a groove processing apparatus, an edge shaping apparatus or protrusion cutting apparatus, a rust prevention processing apparatus, and an inner surface copying roll is shown.

  On the face plate 9, (a) an antirust treatment device 18 is disposed adjacent to the end shaping device 11 or the projection cutting device 17, and (b) is opened facing the end shaping device 11 or the projection cutting device 17. The tip processing device 15 is disposed, and (c) the two copying rolls 12 are disposed to face each other on a line B perpendicular to the facing line A between the edge shaping device 11 or the projection cutting device 17 and the groove processing device 15. ing.

  In FIG. 9, the adjacent core θ between the end shaping device 11 or the projection cutting device 17 and the rust prevention device 18 is not particularly limited.

  In the arrangement example shown in FIG. 9, the rotation of the groove processing device 15, the end shaping device 11 or the projection cutting device 17, and the rust prevention processing device is performed on the outer peripheral surface or inner peripheral surface of the steel pipe end portion and the steel pipe end surface. Since the rotations are adapted to each other, the formation of the high-precision groove surface and the shaping surface or cutting surface proceeds smoothly at the same time, and the high-precision groove surface and the shaping surface or cutting surface can be prevented. Rust treatment is performed quickly.

  The arrangement of the groove processing device, the end shaping device and / or the projection cutting device, the rust prevention treatment device, and the copying roll is not limited to the arrangement example shown in FIG. The arrangement of the groove processing device, the end shaping device and / or the projection cutting device, the rust prevention device, and the copying roll can be appropriately set according to the steel type and mechanical characteristics of the welded steel pipe. Although the crossing angle between the opposing line A and the opposing line B is not limited to 90 °, it is preferable that the copying rolls are provided to face each other across the opposing line A connecting the groove processing device and the end shaping device or the projection cutting device. .

  Although FIG. 9 shows the arrangement of the inner surface copying roll, the copying roll is not limited to the inner surface copying roll, and the arrangement of the copying roll includes a groove processing device, an end shaping device, and / or a protrusion cutting device, and It sets suitably according to arrangement of a rust prevention processing device.

  In FIG. 10, the example of arrangement | positioning of a groove processing apparatus, an edge part shaping apparatus and / or a protrusion cutting apparatus, and a rust prevention processing apparatus is shown. A rust preventive treatment 18 is disposed on the face plate 9 so as to face the end shaping device 11 and / or the projection cutting device 17, and an opposing line between the end shaping device 11 and / or the projection cutting device 17 and the antirust treatment 18. On the line B perpendicular to A, two groove processing devices 15 are arranged to face each other.

  In the arrangement example shown in FIG. 10, the copying roll is not arranged, but the end shaping device 11 and / or the protrusion cutting device 17 includes the copying roll, and the groove processing device 15 is a groove processing. Is provided with a copying roll 15a for smoothly and stably performing the groove processing device 15, the end shaping device 11 or the projection cutting device 17, and the rotation of the rust preventive treatment device. The rotation is adapted to each of the surface or inner peripheral surface and the end surface of the steel pipe.

  Therefore, in the arrangement example shown in FIG. 10, the formation of the high-precision groove surface and the shaping surface or the cutting surface proceeds smoothly at the same time, and the high-precision groove surface and the shaping surface or Rust prevention treatment of the cutting surface is performed quickly.

  FIG. 11 shows another arrangement example of the groove processing device, the end shaping device or the projection cutting device, the rust prevention processing device, and the copying roll. On the face plate 9, (a) a groove processing device 15 is arranged to face the end shaping device 11 or the projection cutting device 17, and (b) the end shaping device 11 or the projection cutting device 17 and the groove processing device. On the line B perpendicular to the 15 opposing lines A, the rust preventive treatment device 18 and the copying roll 12 are arranged to face each other.

  In the arrangement example shown in FIG. 11, the rotation of the groove processing device 15, the end shaping device 11 or the protrusion cutting device 17, and the antirust treatment device 18 is performed on the outer peripheral surface or inner peripheral surface of the steel pipe end portion and the steel pipe end surface. Therefore, the formation of the high-precision groove surface and the shaping surface or the cutting surface proceeds smoothly at the same time, and the high-precision groove surface and the shaping surface or the cutting surface. The rust prevention treatment is performed quickly.

  The arrangement of the groove processing apparatus, the end shaping apparatus and / or the protrusion cutting apparatus, the rust prevention apparatus, and the copying roll is not limited to the arrangement example shown in FIG. The arrangement of the groove processing device, the end shaping device and / or the projection cutting device, the rust prevention processing device, and the copying roll can be appropriately set according to the steel type and mechanical characteristics of the welded steel pipe, and the opposing line A The crossing angle of B is not limited to 90 °, but the copying roll should be arranged opposite to the rust preventive treatment device 18 across the line A connecting the groove processing device and the end shaping device or the projection cutting device. Is preferred.

  Although FIG. 11 shows the arrangement of the inner surface copying roll, the copying roll is not limited to the inner surface copying roll, and the arrangement of the copying roll includes a groove processing device, an end shaping device, and / or a protrusion cutting device, and It sets suitably according to arrangement of a rust prevention processing device.

  FIG. 12 is a diagram illustrating another arrangement example of the groove processing device, the end shaping device or the projection cutting device, the rust prevention processing device, and the copying roll.

  In the arrangement example shown in FIG. 12, the copying roll 12 is arranged on the face plate 9 so as to face the end shaping device 11 and / or the projection cutting device 17, and the end shaping device 11 and / or the projection cutting device. 17 and the scanning roll 12 on a line B perpendicular to the opposing line A, two groove processing devices 15 are disposed opposite to each other, and a rust prevention device is disposed adjacent to one groove processing device 15. ing.

  The rust prevention device 18 and the end shaping device 11 and / or the protrusion cutting device 17 are provided with a copying roll, and the groove processing device 15 is for performing the groove processing smoothly and stably. Since the copying roll 15a is provided, the groove processing device 15, the end shaping device 11 or the protrusion cutting device 17, and the rotation of the rust prevention device are the outer peripheral surface or inner peripheral surface of the steel pipe end portion and the steel pipe end surface. It becomes the rotation which adapted each.

  In FIG. 12, the adjacent core θ between the end shaping device 11 or the protrusion cutting device 17 and the rust prevention device 18 is not particularly limited.

  Therefore, in the arrangement example shown in FIG. 12, the formation of the high-precision groove surface and the shaping surface or the cutting surface proceeds smoothly at the same time, and the high-precision groove surface and the shaping surface or Rust prevention treatment of the cutting surface is performed quickly.

  FIG. 13 shows another arrangement example of the groove processing device, the end shaping device or the projection cutting device, the rust prevention processing device, and the copying roll.

  In the arrangement example shown in FIG. 13, the copying roll 12 is arranged on the face plate 9 so as to face the end shaping device 11 and / or the projection cutting device 17, and the end shaping device 11 and / or the projection cutting device is arranged. 17 and the scanning roll 12 are arranged on a line B perpendicular to the facing line A, the two groove processing devices 15 are arranged opposite to each other, and the rust prevention device is adjacent to each of the two groove processing devices 15. Has been placed.

  The rust prevention device 18 and the end shaping device 11 and / or the protrusion cutting device 17 are provided with a copying roll, and the groove processing device 15 is for performing the groove processing smoothly and stably. Since the copying roll 15a is provided, rotation of the groove processing device 15, the end shaping device 11 or the projection cutting device 17, and the rust preventive treatment device 18 is performed on the outer peripheral surface or inner peripheral surface of the steel pipe end portion and the steel pipe. Each end face has a suitable rotation.

  In FIG. 13, the adjacent nuclei θ1 and θ2 of the end shaping device 11 or the protrusion cutting device 17 and the rust prevention treatment device 18 are not particularly limited.

  Therefore, in the arrangement example shown in FIG. 13, the formation of the high-precision groove surface and the shaping surface or the cutting surface proceeds smoothly at the same time, and the high-precision groove surface and the shaping surface or Rust prevention treatment of the cutting surface is performed quickly.

  9 to 13 show examples of arrangement in which a groove processing device, an end shaping device and / or a protrusion cutting device, and a rust prevention treatment device are arranged on a face plate. Examples are not limited to the arrangement examples shown in FIGS.

  For example, a groove processing device, an end shaping device and / or a protrusion cutting device are arranged on the face plate, and the face plate is rotated to form a groove surface, a shaping surface and / or a cutting surface, and then Retract the face plate, remove the groove processing device or end shaping device and / or protrusion cutting device, attach the anti-rust treatment device to any of the removed positions, and advance and rotate the face plate again. Then, the groove surface, the shaping surface, and / or the cutting surface may be subjected to rust prevention treatment.

  The method of the present invention uses the apparatus of the present invention to (a) groove processing of the steel pipe end surface, (b) end shaping and / or protrusion cutting of the outer peripheral surface and / or inner peripheral surface of the steel pipe end, and ( c) It is characterized by performing rust prevention treatment on the groove processing surface and the end shaping surface and / or the projection cutting surface.

  When a groove processing device, an end shaping device and / or a protrusion cutting device, and a rust preventive treatment device are arranged on the face plate (see FIGS. 9 to 13), while the face plate rotates once, A groove-finished surface and / or an edge-shaped surface and / or a protrusion that simultaneously perform rust-proofing on the groove-worked surface and the edge-shaped surface and / or protrusion-cutting surface, and that does not distort and rust. A cutting surface can be formed.

  In addition, even when a groove processing device, an end shaping device and / or a projection cutting device are arranged on the face plate and the rust prevention device is attached to the removal position of these devices after one rotation, Backward and forward are performed quickly, and the next rotation of the face plate simultaneously performs rust prevention treatment on the groove processing surface and the edge shaping surface and / or the projection cutting surface, and there is no distortion and rusting. A grooved surface and an end shaping surface and / or a protruding cutting surface can be formed.

  Therefore, the welded steel pipe and the welded steel pipe can be welded at the construction site without causing poor welding.

  Next, examples of the present invention will be described. The conditions in the examples are one example of conditions used for confirming the feasibility and effects of the present invention, and the present invention is based on these one example conditions. It is not limited. The present invention can adopt various conditions as long as the object of the present invention is achieved without departing from the gist of the present invention.

Example 1
The edge part of the striped steel pipe was processed with the processing / rust prevention apparatus which arrange | positioned the groove processing machine, the protrusion cutting machine, the rust prevention processing apparatus, and the copying roll on the face board by arrangement | positioning shown in FIG. The time required for processing can be shortened to about 1/5 compared with the processing time by the conventional apparatus (removal of stripe cutting after groove processing).

  Further, since there was no distortion that could be visually discerned on the groove surface and no rust was generated on the groove surface, the striped steel pipe and the striped steel pipe could be welded at the construction site without causing poor welding. In addition, the groove surface of the striped steel pipe machined with the conventional equipment has distortion that can be visually discerned, and the rust is remarkably generated on the groove surface during transportation of the striped steel pipe to the site. Occurred.

  As described above, according to the present invention, it is possible to prevent the occurrence of rust on the processed surface formed by subjecting the end surface and end portion of the welded steel pipe to groove processing, shaping processing and / or cutting processing. it can. As a result, when welding the steel pipe end, the arc is stable and no welding failure occurs, so that the welding work efficiency at the construction site is improved. Therefore, the present invention has high applicability in the steel pipe manufacturing industry and the civil engineering and building industry.

DESCRIPTION OF SYMBOLS 1 Welded steel pipe 1a Stripe 2 Face board 3, 10 Chamfering machine 4 Steel pipe fixing means 5, 13 Hydraulic mechanism 6 Foundation 7 Base 8 Rail 9 Face board 9a, 9b Base 9c, 9d Child base 11 End shaping device 11a Roll 11b Cutting tool presser 11c Cutting tool 12 Copying roll 14 Base floor 15 Groove processing device 15a Copying roll 16 Steel pipe holder 16a Support arm 17 Protrusion cutting device 17a Copying roll 17b Cutting tool presser 17c Cutting tool 18 Antirust treatment device 18a Rust solution supply device 18b Copying roll 18c Upper frame 18d Lower frame 18e Application tool 18f Holder

Claims (12)

On the outer periphery or inner periphery of the face plate that rotates around the pipe axis of the welded steel pipe and that moves forward or backward relative to the welded steel pipe,
(I-1) provided with a groove processing device for processing a groove on the end surface of the steel pipe, and
(Ii) A steel pipe end portion processing / rust prevention device comprising a rust prevention treatment device for performing a rust prevention treatment on a groove surface formed by a groove processing device. On the outer periphery or inner periphery of the face plate that rotates around the pipe axis of the welded steel pipe and that moves forward or backward relative to the welded steel pipe,
(I-1) Equipped with a groove processing device that processes the groove on the end face of the steel pipe,
(I-2) An end shaping device that cuts and removes weld deposits and / or deposits generated on the outer peripheral surface or inner peripheral surface of the steel pipe end and continuously formed on the outer peripheral surface or inner peripheral surface of the steel pipe One or both of a protrusion cutting device that cuts and removes the protrusions formed, and
(Ii) A rust preventive treatment device is provided that performs a rust preventive treatment on one or both of the groove surface formed by the groove processing device, the shaping surface formed by the end shaping device, and the cutting surface formed by the protrusion cutting device. Steel pipe end processing and rust prevention device.   The processing / rust prevention device for a steel pipe end part according to claim 1 or 2, wherein the face plate is installed indoors.   The steel pipe end portion according to any one of claims 1 to 3, wherein the outer periphery or the inner periphery of the face plate is provided with one or more scanning rolls that rotate following the outer surface or the inner surface of the steel pipe. Processing / rust prevention equipment.   The copying roll is provided with a gap between a groove processing device and an end shaping device or a projection cutting device, or a line connecting a groove processing device and a rust preventive device, facing each other. 4. Steel pipe end processing / rust prevention device according to 4.   The steel pipe end processing / rust prevention device according to any one of claims 1 to 5, wherein two or more groove processing devices are provided on an outer periphery or an inner periphery of the face plate.   The steel pipe end processing / rust prevention device according to claim 6, further comprising a rust prevention treatment device adjacent to the two or more groove processing devices.   The said rust prevention processing apparatus is an apparatus which apply | coats or sprays a rust prevention liquid, The processing and rust prevention apparatus of the steel pipe end part of any one of Claims 1-7 characterized by the above-mentioned.   The steel pipe end according to any one of claims 1 to 8, further comprising a cutting tool presser that presses the back of the end shaping device and / or the projection cutting device on an outer periphery or an inner periphery of the face plate. Processing / rust prevention equipment.   10. One or more of the groove processing device, the end shaping device, the protrusion cutting device, and the rust prevention processing device each include a copying roll. 10. Steel pipe end processing / rust prevention equipment.   The said processus | protrusion is formed in spiral shape, The processing and rust prevention apparatus of the steel pipe end part of any one of Claims 1-10 characterized by the above-mentioned.   Using the steel pipe end portion processing / rust prevention device according to any one of claims 1 to 11, (a) groove processing of the steel pipe end surface, (b) outer peripheral surface and / or inner periphery of the steel pipe end portion. Surface pipe end shaping and / or protrusion cutting, and (c) rust prevention treatment to the grooved surface and end shaping surface and / or protrusion cutting surface at the same time. Processing / rust prevention method.

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