JPH06114442A - Application control system for straightening equipment for ultra long tube - Google Patents

Abstract

PURPOSE:To straighten a long steel tube for a pipeline, to measure its straightened accuracy, to measure its length, to cut it off, to wind a tape round its outer surface automatically at each stage. CONSTITUTION:The long steel tube P for the pipeline wound in a coil shape is straightened by a straightening equipment 1 and its straightened rate is measured by a straightened accuracy measuring device 2. A pipeline length measuring device 3 measures the pipeline length automatically, a measured data of the pipeline length is recorded automatically, an automatical stop signal and an automatical cutoff signal are given, a pipeline cutoff device 4 cuts off a straightened pipeline and the cutoff place is finished. A device 5 for winding a tape round the outer surface winds the tape round the outer surface of the straightened pipeline. Guides 6 with rollers are used in drawing a long straight tube and hold the middle of the tube to prevent meandering. In this way, the straightened accuracy is promoted, working quality and working efficiency are improved and working results can be grasped by automatic data control and production control is made easy to be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a straightening machine construction management system for ultra-long pipes, and more particularly to process equipment piping work (steam trace piping, hose station piping, fire extinguishing piping, instrument pressure guiding piping, sampling piping). , Pumps / cooling pipes, slop pipes, etc.), bridge construction and railings for platforms, hydraulic equipment surrounding hydraulic utility pipes, road peripheral electric wire cable protection pipes, road crossing buried object protection pipes, sprinkling pipes (process equipment cooling, The present invention relates to a straightening machine construction management system for an ultra-long pipe, which straightens a long steel pipe for piping used in agriculture, golf courses, etc. in a straight line while unwinding it from the coil.

[0002]

2. Description of the Related Art A typical long steel pipe wound in a coil form is an electric resistance welded steel pipe produced by high frequency induction welding or a seamless steel pipe produced by a hot extrusion method or a hot rolling method. , There is one in which a steel pipe that is heated in a continuous heating furnace, reduced in diameter by drawing rolling, and finished to a predetermined size is wound into a coil (for example, "PIC for piping").
(Pipe In Coil) "Nippon Steel Corporation
Made). Conventionally, all of the straightening work of these long steel pipes is performed manually, and straightening is performed while unwinding from the coil and manually cut to a required length. Then, when it is necessary to wind the outer surface protection tape, this is done manually, and in the work of extending a long straight pipe, the work is carried out by arranging workers at regular intervals and gripping the pipe. Since all the straightening work is done by hand in this way, a large number of workers are required, the work process is complicated and work efficiency is poor, resulting in an increase in work cost and accurate production control. Nakatsuta. Moreover, the work quality cannot be kept constant, and there is a problem in quality control of the construction.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to improve straightening accuracy in straightening a long steel pipe for piping which is wound in a coil and straightening it while unwinding from the coil. (EN) It is intended to provide a straightening machine construction management system for ultra-long pipes, which improves work efficiency, can grasp work results by automatic data management, and is suitable for production control.

[0004]

[Means for Solving the Problems] The above object is to measure a straightening machine for straightening a long steel pipe for piping with a predetermined accuracy and a straightening degree for quality control of the straightening accuracy. However, at the same time as generating the feedback signal, if the straightening accuracy standard is not satisfied, an alarm is issued, and a straightening accuracy measuring device that generates an automatic stop signal and an automatic digital counter device are provided,
The length of the straightened long steel pipe for piping is automatically measured, and when the predetermined length is confirmed, the measured value is displayed on the display device and a notification signal is issued, and an automatic stop signal and a disconnection signal are generated. Measuring device and a cutting signal to operate an automatic cutter to cut the long steel pipe for piping and finish the cut point.A pipe cutting device is used to wind the tape on the outer surface of the long steel pipe for piping. An external tape wrapping device that issues an alarm and generates an automatic stop signal, and a guide with a roller that is used when stretching a long straight pipe, has a meandering detector, and that generates an automatic stop signal when a meander occurs, and piping. This is achieved by an ultralong pipe straightening machine construction management system which is composed of an automatic recording device for recording the data measured by the length measuring device.

[0005]

[Function] The long steel pipe for piping wound in a coil shape is straightened with a predetermined accuracy, or by a feedback signal,
The straightened pipe is automatically measured, the measurement data of the pipe length is automatically recorded, and the pipe is automatically cut into a predetermined length. At the same time as straightening, the wrapping of the outer tape is automatically completed with a certain work quality. Further, in the case of drawing a long steel pipe for long piping, a guide with rollers is used to grasp the middle of the pipe and detect the degree of meandering. Then, when the straightening accuracy standard is not met, when the pipe length reaches a predetermined length (reference value), when there is inconvenience such as tape cutting, or when meandering occurs, an automatic stop signal is issued respectively and straightening is performed. Shut down the machine.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the drawings along with embodiments. FIG. 1 is a device configuration of a straightening machine construction management system for ultra-long pipes of the present invention, FIG. 2 is an embodiment of a control system of the system of the present invention, and FIG. 3 is another control system of the system of the present invention. FIG. 4 shows an example of a straightening machine used in the system of the present invention, FIG. 5 is a guide with rollers used in the system of the present invention, and FIG. 5 (b) is a diagram showing a method of installing pipes on the guide with rollers. In FIG. 1, 1 is a straightening machine, 2
Is a straightening accuracy measuring device, 3 is a pipe length measuring device having an automatic digital counter device, 4 is a pipe cutting device having an automatic cutter, 5 is an external tape winding device, 6 is a guide with rollers, and 7 is a long pipe It is a drum formed by winding a steel pipe P in a coil shape. Next, the overall operation of the straightening machine construction management system for ultra-long pipes of the present invention will be described with reference to FIG. The long steel pipe P for piping unwound from the coiled drum 7 is supplied to the straightening machine 1 while having a bent portion. The straight steel pipe P straightened by the straightening machine 1 has a straightening degree for quality control of the straightening accuracy measured by the straightening accuracy measuring device 2 in the next stage. As a result of the measurement by the straightening accuracy measuring device 2, if the straightening accuracy of the long steel pipe P for piping is within a predetermined range, the straightening work is continued, and the pipe length measuring device 3 having an automatic digital counter device is used. The length of the pipe being straightened is automatically measured. When the predetermined length is confirmed according to the design drawing, the pipe length measuring device 3 generates an automatic stop signal and a disconnection signal, and the automatic stop signal is supplied to the straightening machine 1 to stop the straightening machine 1. . The cutting signal is supplied to the pipe cutting device 4, and the pipe cutting device 4 cuts the long steel pipe P for piping by an automatic cutter to finish the cut portion. When the pipe cutting is completed, the straightening machine 1 restarts and continues the straightening work for producing the next pipe. If it is necessary to wind the tape on the outer surface of the long steel pipe P for piping cut into a predetermined length, the outer tape winding device 5 winds the tape on the outer surface of the long steel pipe P for piping. The long steel pipe P for piping whose tape has been wound on the outer surface is sent to the guide 6 with a roller for preventing meandering, which is used when extending a long straightening pipe, and the drawing laying work is completed.

An example of the straightening machine 1 used in the system for managing the straightening machine for ultra-long pipes of the present invention is shown in FIG. 4, and an example of a guide with rollers for preventing meandering is shown in FIG. explain. The straightening machine 1 shown in FIG. 4 has been proposed by the present applicant as Japanese Patent Application No. 4-195673. 4 (a) is a side view of the straightening machine 1, and FIG. 4 (b) is FIG.
It is an arrow line view from the arrow A direction of (a). In these figures, 10 is a support member, and on the upper side thereof, grooves 15 and 17 extending in the vertical direction (arrow (a) and (b) directions).
Are formed so as to be separated from each other by a predetermined distance in the longitudinal direction (arrow (C) and (D) directions). A roller 11 and a roller 13 are supported on the lower side of the support member 10 so as to be rotatable about an axis with a predetermined distance in the longitudinal direction of the support member 10. The axes of the roller 11 and the roller 13 are parallel to each other, and the rollers 11 and 13 are arranged with their outer peripheral portions facing each other. On the other hand, on the upper side of the support member 10, rollers 12 and 14 are provided so as to be movable in the vertical direction of the support member 10. The roller 12 and the roller 14 are provided as a long moving member (not shown) provided so as to be movable in the vertical direction of the supporting member 10 while keeping the state parallel to the longitudinal direction of the supporting member 10. On the other hand, it is rotatably supported. Guide shafts 16 and 18 are slidably fitted in the grooves 15 and 17, respectively, and fixed to the moving member by bolts 19 and 19 provided on the supporting member 10 at predetermined positions. The rollers 12 and 14 are arranged such that their axes are parallel to each other and the outer peripheral portions of the rollers 12 and 14 are opposed to each other with a predetermined distance therebetween. The plane including the axis of the roller 12 and the axis of the roller 14 is parallel to the plane including the axis of the roller 11 and the axis of the roller 13. Further, the distance between the shafts of the rollers 12 and 14 is
The axis line of the roller 12 and the axis line of the roller 11 coincide with each other in the vertical direction of the support member 10. Further, the outer peripheral portions of the roller 12 and the roller 11 are opposed to each other. The rollers 11, 1
2, 13, 14 are made of structural steel, tool steel, high strength aluminum alloy or hard plastic,
Both of them have the same shape, and the outer peripheral portions of the outer peripheral portions have groove portions 11a, 12a, 13a, 1 toward the center side in the roller thickness direction.
4a are formed respectively. When the straightening machine 1 for straightening the bend in the pipe configured as described above is used, the vertical positions of the rollers 12 and 14 with respect to the support member 10 are adjusted to adjust the rollers 12 and 14 and the support member 10. The bent long steel pipe P is pinched between the roller 11 and the roller 13 fixed to the roller 13, and the bolts 19 and 19 are tightened in this state to fix the roller 12 and the roller 14 to the support member 10. Alternatively, the rollers 12 and 14 may not be fixed to the support member 10 and may be subjected to positioning control by a drive device (for example, a hydraulic servo) that generates a sufficient clamping force. Then, in this state, the long steel pipe P for piping is pulled out or pushed out in the axial direction, so that the long steel pipe P for piping is straightened by the pressing action of the rollers 11, 12, 13, and 14.

Next, an outline of a guide with a roller for preventing meandering will be described. FIG. 5 (a) is an outline of the structure of the guide with rollers, and FIG. 5 (b) is a diagram for explaining a method of installing pipes on the guide with rollers. The guide 6 with rollers has a casing including a side guide 63 and an upper guide 64 installed on a guide support 62, and rollers 65 are arranged at predetermined intervals therein. The upper surface guide 64 can be opened and closed about a pin 68. Top guide 6
For the lock of 4 closed, the upper surface guide 6
4 and the upper surface guide retainer 6 which is pivotally supported by the pin 69.
This is done by closing 6. To install the long steel pipe P for piping on the guide 6 with rollers, see FIG.
As shown in, the upper surface guide retainer 66 is released, the upper surface guide 64 is opened, and the long steel pipe P for piping is installed on the roller 65. Next, as shown in (b), the top guide 64 is closed and placed on the guide retainer 67. Finally, as in the state of (c), the upper surface guide retainer 66 is used for locking. Removal of the long steel pipe P for piping is achieved by the reverse procedure of the above. The meandering state of the long steel pipe P for piping can be detected by installing a meandering detector at an appropriate position in the housing of the guide 6 with rollers. As the meandering detector, for example, photoelectric elements may be arranged at predetermined intervals so as to be located above and below the long steel pipe P for piping.

Next, referring to FIG. 2, the control system of the straightening machine construction management system for ultra-long pipes of the present invention will be described in detail. In FIG. 2, the components having the same reference numbers as those in FIG. 1 represent the same components. The straight steel pipe P straightened by the straightening machine 1 is measured by the straightening precision measuring device 2 in the next stage for the straightening degree for quality control of the straightening precision. The straightening accuracy measuring device 2 measures the straightening degree and generates an automatic stop signal Vs. When the measured value does not satisfy the straightening accuracy, an abnormal signal is issued to the alarm lamp and the buzzer 21 as an abnormal accuracy, and the automatic stop signal V
s is generated and sent to the straightening machine 1, and the operation of the straightening machine 1 is stopped. As a quality standard of the straightening degree of the straightening accuracy measuring device 2, an accuracy within 2 mm / M is targeted. When straightening pipes are sequentially supplied, the pipe length measuring device 3 having an automatic digital counter device automatically measures straightening pipes, displays the measured value on the length display device 31, and records the measured value in length. Record in device 32. The pipe length measuring device 3 compares the measured value with a predetermined length (reference value) based on the design specifications, and when the predetermined length is reached, an automatic stop signal Vs and a disconnection signal are generated, and at the same time, a notification is given. The signal is sent to the notification lamp 33. The automatic stop signal Vs is sent to the straightening machine 1,
Stop driving. The straightening length accuracy measured by the pipe length measuring device 3 is targeted at an accuracy within 3 cm / M. The data recorded in the length recording device 32 becomes management data, the work result can be grasped, and used for production management. Further, the cutting signal is supplied to the pipe cutting device 4 in the next stage, and the pipe cutting device 4 cuts the straightening pipe with an automatic cutter to automatically finish the cut portion. When the cutting work is finished, the operation of the straightening machine 1 is restarted again. When it is necessary to wind the tape on the outer surface of the straightened long steel pipe P for piping, the outer tape winding device 5 is installed at the exit of the cutting machine 4. The outer surface tape winding device 5 is a long steel pipe P for piping.
The tape is automatically wound on the outer surface of the device, and when a problem such as cutting of the tape occurs, a notification signal is sent to the notification lamp 51 and an automatic stop signal Vs is generated to stop the operation of the straightening machine 1. In the case of drawing the long steel pipe P for long piping, it is already necessary to mobilize a large number of workers at the laying location of the long steel pipe P for piping to grip the middle of the pipe. The guide with roller 6 described with reference to FIG. A meandering detector 61 is provided on the guide 6 with rollers.
When the meandering occurs, this is detected and the automatic stop signal V
generate s. Then, the automatic stop signal Vs is sent to the straightening machine 1 to stop the operation of the straightening machine 1. Thus, FIG.
According to the control system of the straightening machine construction management system for ultra long pipes, the long steel pipe P for bent pipe can be automatically processed from the stage of straightening the straight pipe to the stage of winding the outer surface tape.

Next, another embodiment of the control system of the straightening machine construction management system for ultra-long pipes of the present invention is shown in FIG. The control system shown in FIG. 3 includes a straightening machine 1, a straightening accuracy measuring device 2, an alarm lamp and a buzzer 21, a pipe length measuring device 3, and a length display device 3.
1, a length recording device 32, a notification lamp 33, a pipe cutting device 4, an outer tape winding device 5, a notification lamp 51, a guide with roller 6, and a meandering detector 61, and the basic operation is also shown in FIG. Do the same. However, the difference from the control system of FIG. 2 is that the straightening accuracy measuring device 2 measures the straightening degree, successively compares it with the straightening accuracy reference signal to obtain a correction signal Vc, and feeds it back to the straightening machine 1. It is to return as a signal. Of course, if the measured value does not satisfy the straightening accuracy, an abnormal signal is issued to the alarm lamp and the buzzer 21 as an abnormal accuracy to call attention, and at the same time, an automatic stop signal Vs is generated and sent to the straightening machine 1. The fact that it has a function of stopping the operation of the straight machine 1 is similar to that shown in FIG. When the correction signal Vc is fed back to the straightening machine 1 as a hood back signal, the roller 12 and the roller provided so as to be movable in the vertical direction of the support member 10 of the straightening machine 1 which has already been described with reference to FIG. A long moving member (not shown) attached to 14 is not fixed to the support member 10 but is position-controlled by a drive device (for example, a hydraulic servo) that generates a sufficient clamping force. The guide shafts 16 and 18 slide into the grooves 15 and 17, respectively, and fix the guide shafts 16 and 18 at desired positions, so that the rollers 12 and 14 and the roller 11 fixed to the supporting member 10 are fixed.
And the clamping force between the roller 13 and the roller 13 is adjusted. as a result,
The bent long steel pipe P for pipes is automatically corrected to a desired straightening accuracy standard. As described above, in the other embodiment of FIG. 3, the straightening machine 1 is continuously clamped by the correction signal Vc from the straightening accuracy measuring device 2 during the straightening operation of the bent long steel pipe P for piping. By adjusting the pressure, the straightening accuracy of the long steel pipe P for piping can be automatically maintained within the target value.

[0011]

As described above, according to the present invention, a long steel pipe for piping wound in a coil shape can be straightened with a predetermined accuracy by a straightening machine, and the straightened pipe can be automatically measured. However, it can be automatically cut to a predetermined length. Then, the trouble of signaling between the straightening machine operator and the laying position length monitor at the laying place, which was necessary for laying long pipes, is eliminated, and intermediate workers and surplus facilities are eliminated. Moreover, the winding of the outer tape can be automatically completed at the same time as the straightening with a certain work quality. Furthermore, in the case of drawing a long steel pipe for long piping, by using a guide with rollers, it is not necessary to mobilize a large number of workers at the laying location of the pipe to grip the middle of the pipe. As a result, it is possible to reduce the number of workers and improve work quality and work efficiency. In addition, by automatically controlling the straightening force of the straightening machine with the feedback signal of the straightening accuracy measuring device, the straightening accuracy of the long steel pipe for piping is always converged to a predetermined reference value, and the straightening accuracy is improved. Can be realized. Further, the result of the work can be grasped by the automatic data management, and the excellent effects such as facilitating the production management can be obtained.

[Brief description of drawings]

FIG. 1 is a device configuration diagram of a straightening machine construction management system for ultra-long pipes according to the present invention.

FIG. 2 is an example of a control system of the system of the present invention.

FIG. 3 is another embodiment of the control system of the system of the present invention.

FIG. 4 is an example of a straightening machine used in the system of the present invention.

FIG. 5 is a guide with rollers for use in the system of the present invention.

[Explanation of symbols]

 1 Straightening machine 2 Straightening accuracy measuring device 21 Alarm lamp and buzzer 3 Piping length measuring device 31 Length display device 32 Length recording device 33 Notification lamp 4 Pipe cutting device 5 External tape winding device 51 Notification lamp 6 Roller guide 61 meandering detector 7 drum for winding long steel pipe P for piping

Claims (4)

[Claims] 1. A straightening machine for straightening a long steel pipe for piping wound in a coil shape, and when the straightening degree is measured and a feedback signal is generated and at the same time the straightening accuracy standard is not satisfied, automatic stop is performed. A straightening accuracy measuring device that generates a signal and a length measuring device that automatically measures the length of a straightened long steel pipe for piping and generates an automatic stop signal and a disconnection signal when a predetermined length is confirmed And a pipe cutting device that cuts a long steel pipe for piping by operating an automatic cutter in response to a cutting signal and finishes the cut portion, a straightening machine construction management system for an ultra-long pipe. 2. An external tape winding device for winding the tape on the outer surface of the straightening pipe and for generating an automatic stop signal in the case of inconvenience such as cutting of the tape is provided at the next stage of the pipe cutting device. Item 1. A straightening machine construction management system for ultra-long pipes according to Item 1. 3. Used in the case of drawing a long straight pipe,
The straightening machine construction management system for an ultra-long pipe according to claim 1 or 2, further comprising a guide with a roller having a meandering detector and generating an automatic stop signal when the meandering occurs. 4. The straightening force of the straightening machine is automatically controlled by a hood-back signal of the straightening accuracy measuring device. Direct machine construction management system.