KR20140021440A - Pipe cutting and beveling apparatus - Google Patents

Abstract

Disclosed is a device for cutting and beveling a pipe. The device for cutting and beveling a pipe according to an embodiment of the present invention includes a pipe centering unit vertically moved in order to center the pipe to match the center of the pipe with the rotation center of an orbital; a pipe clamping unit clamping the centered pipe; an orbital operation unit cutting and beveling the clamped pipe; and a controller controlling operation of the pipe clamping unit and the orbital operation unit.

Description

PIPE CUTTING AND BEVELING APPARATUS}

The present invention relates to a pipe cutting and improving apparatus.

As is well known, subsea pipelines for the transport of gas or crude oil are developed under control from a special pipe laying barge or barge and laid down on the seabed. It may be assembled (called stovepipe assembly) or pulled out of one or more reels installed on the laying vessel (this is called reel pipe laying).

As shown in FIG. 1, the stove pipe assembly method and the reel pipe laying method are based on the working conditions such as the working depth, pipe type, pipe diameter, and the like, such as S-laying, J-laying, reel-laying, It is classified as a flex-laying method, each has different functional advantages and disadvantages, and a multi-laying method using a plurality of pipe mounting methods is a trend.

In general, when the S-lay method is adopted, after chamfering, welding, and inspecting the pipe of 9-12m in the subsea pipe laying ship, the work is repeatedly sent down to the sea floor. It can be used for the purpose of performing the beveling work on the end and also for cutting the pipe in which the defect occurred during welding. Prior arts, which are the background of the invention, include pre-production of pipe strings on pipe laying vessels, methods and apparatus for laying subsea pipelines, and subsea cables, which are not related to the automatic cutting and improving welding of pipes. Disclosed are ships each equipped with installation equipment.

Korean Patent Publication No. 10-2009-0130007 (published Dec. 17, 2009) Korean Patent Publication No. 10-201000021995 (published Feb. 26, 2010) Korean Patent Publication No. 10-2011-0072562 (published June 29, 2011)

Embodiments of the present invention are to provide a pipe cutting and improving apparatus that maximizes productivity by fully automating cutting and improving operations in a pipe manufacturing process.

According to an aspect of the present invention, a pipe cutting and improving apparatus includes: a pipe centering portion which is moved up and down to center the pipe to match the center of the pipe and the orbital rotational center; a pipe clamping portion which clamps the centered pipe; And an orbital actuator for simultaneously cutting and improving the clamped pipe, a pipe centering unit, and a controller for controlling driving of the pipe clamping unit and the orbital actuator.

The orbital actuating unit may perform double V refinement on both ends of each pipe.

The pipe centering part includes a plurality of pipe holders on which the transferred pipes are seated, a holder frame on which the pipe holders are installed, a screw block mounted on both lower sides of the holder frame, and a screw shaft rotatably attached to the screw block. The drive shaft may include a driving motor rotating the screw shaft, and the screw shaft may be rotated according to the forward and reverse rotation of the driving motor to move the pipe holder up and down.

The pipe clamping portion is provided with a clamping frame into which the pipe is inserted, a clamping rotary plate attached to the clamping frame, a clamping pressure driving unit for rotating the clamping rotary plate by linear movement, and a plurality of internal and external parts to guide the rotation of the clamping rotary plate. It may include a guide slot and a plurality of clamping jaws (protrusion or contraction jaw) to protrude or contract to clamp the outer peripheral surface of the pipe in accordance with the rotation of the clamping rotating plate.

The end of the clamping jaw may further include an auxiliary jaw attached to clamp the small diameter pipe.

Jaw rolling drive means comprises a rolling portion consisting of a sprocket and a chain attached to the auxiliary jaw, the rolling portion may be speed controlled by the controller.

The clamping jaw operating piece is inserted into the inner guide slot and moved according to the rotation of the clamping rotating plate, so that the clamping jaw protrudes and clamps the outer circumferential surface of the pipe, and the feed guide piece is inserted into the outer guide slot to guide the rotation of the clamping rotating plate.

An orbital actuating unit includes an orbital frame, an orbital rotating plate rotatably attached to the orbital frame, a tool unit to which a tool is attached to be cut and cut by a specified amount according to the rotation of the orbital rotating plate, and to rotate the orbital rotating plate. It may include a drive connected.

The tool portion may include a cutting bite for cutting the pipe, an improvement bite for improving the pipe (beveling / chamfering), and a tool cutting mechanism attached to the orbital rotating plate to convey a predetermined amount of the cutting and improving bite.

The orbital actuating part includes a tool trigger that implements a mechanical switching operation in which the tool part is plunged by a specified amount for each revolution of the orbital rotating plate, and one or more tool cutting mechanisms and tools for further processing after the machining is completed. It may further include a tool initialization mechanism for initializing the negative position to the machining position.

When performing the clamping operation may further include an auxiliary pipe clamping unit disposed to ensure the roundness of the pipe.

The auxiliary pipe clamping portion includes a feed table, a pair of guide blocks moved left and right at the object to be transported, a jaw coupling part attached to the guide block to clamp the left and right surfaces of the pipe according to the movement of the guide block, and a jaw Jaw rolling drive means for driving the coupling portion, the guide block can be simultaneously reduced / expanded by a single drive.

The feeder is a one-pinion / two rack structure, and when the linear guide attached to the bottom pushes and pulls the moving part, the guide block can be moved by the same amount by the rack / pinion in the center and moved by the same amount at the same time. .

It may further include a position compensation sensing mechanism for measuring the moving distance of the pipe.

In order to compensate for the difference between the movement distance measured by the position compensation sensing mechanism and the set movement distance, feedback control of the rolling unit may be performed through the controller.

Embodiment of the present invention by reducing the work load of the operator by automating the cutting and improvement work of the pipe, it is possible to eliminate the quality error resulting from the manual grinding work, it is possible to improve the productivity for spool production as the work speed increases In addition, it has the effect of minimizing the number of workers.

1 is a perspective view showing an installation state in which the pipe cutting and improving device of the present invention is connected to a pipe automatic feed mechanism;
FIG. 2 is a partial perspective view illustrating a pipe information measuring device installed in the pipe conveying mechanism of FIG. 1;
3 is a perspective view showing a pipe cutting and improving apparatus according to an embodiment of the present invention,
4 is a bottom perspective view of the device of FIG. 3;
5 is a side view of the device of FIG. 3,
FIG. 6 is a schematic exploded perspective view showing a pipe centering part of the apparatus of FIG. 3;
7 and 8 are perspective views showing the rear surface of the pipe clamping portion of the apparatus of FIG.
FIG. 9 is an exploded perspective view illustrating a state in which the orbital actuating part of the apparatus of FIG. 3 is coupled to the front surface of the pipe clamping part of FIG. 7;
10 is a detailed view of the orbital operation of FIG. 9,
FIG. 11 is a perspective view illustrating the auxiliary pipe clamping portion of the apparatus of FIG. 3;
12 is a detailed view illustrating a moving mechanism of the auxiliary pipe clamping part of FIG. 11;
FIG. 13 is a perspective view illustrating a pipe clamping operation of the auxiliary pipe clamping part of FIG. 11;
14 to 16 are exemplary views illustrating a cutting and improving method according to the cutting and improving device of FIG. 3.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a perspective view showing an installation state in which the pipe cutting and improving apparatus of the present invention is connected to a pipe automatic feed mechanism, and FIG. 2 is a partial perspective view showing a pipe information measuring device installed in the pipe feed mechanism of FIG. 1.

As shown in the drawing, the pipe cutting and improving apparatus 100 of the present invention automatically cuts the pipe 2 conveyed in the direction of the arrow on the main frame 12 of the pipe automatic feed mechanism 10 and then executes the improvement work. 1 through the automatic pipe transfer mechanism 10 as shown in FIG.

In the main frame 12 of the automatic pipe transport mechanism 10, as shown in FIG. 2, the vision system 24 and a plurality of displacements on the measuring instrument frame 22 to measure information such as the outer diameter of the pipe 2, etc. The pipe 26 may include a pipe information measuring device 20 installed thereon.

3 is a perspective view illustrating a pipe cutting and improving apparatus according to an embodiment of the present invention, FIG. 4 is a bottom perspective view of the apparatus of FIG. 3, and FIG. 5 is a side view of the apparatus of FIG. 3.

3 to 5, the pipe cutting and improving welding apparatus 100 according to an embodiment of the present invention is the center of the pipe converted by extracting the outline of the pipe by the pipe information measuring device 20 Pipe centering unit 200 moved up and down to center the pipe to match the position and orbital rotation center, the pipe clamping unit 300 for clamping the centered pipe, and the cutting and improvement of the clamped pipe A controller (not shown) serving as a control unit for controlling the driving of the orbital operating unit 400, the pipe centering unit 200, the pipe clamping unit 300, and the orbital operating unit 400. Include.

As shown in FIG. 6, the pipe centering unit 200 includes a plurality of pipe holders 210 on which the transferred pipes are seated, a holder frame 220 on which the pipe holders 210 are installed, and a holder frame 220. Screw block 230 mounted on both sides of the lower side, a screw shaft 240 rotatably attached to the screw block 230, a fixing plate 250 fastened to the screw shaft 240, and a screw shaft ( And a driving motor unit 260 for rotating and driving 240.

The V-shaped rotary roller 212 is attached to the pipe holder 210, and a ball screw into which one end of the screw shaft 240 is inserted may be attached to the screw block 230. In addition, pulleys 262 are attached to the other end of the screw shaft 240, that is, the lower portion of the fixing plate 250.

Referring to FIG. 4, the pulleys 262 are wound around the drive belt 264, and one of the pulleys 262 is wound around the pulley 262 and the drive belt 264 of the drive motor 266.

In addition, the fixing plate 250 may be formed with a moving screw to be screwed to the screw shaft 240. Accordingly, when the driving force is transmitted to the screw shaft 240 according to the forward and reverse rotation of the driving motor 266, the screw shaft 240 rotates, and as a result, the pipe holder 210 may be moved up and down. .

Thereby, the pipe holder 210 is moved up and down by the drive motor 266 operated in consideration of the center of the pipe measured by the plurality of displacement sensors 26 (FIG. 2) of the pipe information measuring device 20. By doing so, the pipe 2 seated on the pipe holder 210 can be centered so that its center coincides with the orbital rotation center.

7 and 8 show the rear face of the pipe clamping part of the pipe cutting and improving apparatus of FIG. 3 and show its operating state.

As shown in FIG. 7 and FIG. 8, the pipe clamping unit 300 includes a clamping frame 320 having an opening 310 formed at a center thereof so as to insert a pipe, and a circumference of the opening 310 at one side of the clamping frame 320. Clamping rotary plate 330 attached to the clamping, the clamping pressure drive unit 340 for rotating the clamping rotary plate 330 by a linear motion, and a plurality of guide slots 350 formed inside and outside to guide the rotation of the clamping rotary plate 330 352 and a plurality of clamping jaws 360 that protrude or contract to clamp the outer circumferential surface of the pipe as the clamping rotor 330 rotates.

Five clamping jaws 360 may be installed at equal intervals in the opening 310, and the stroke of the clamping jaws 360 protruding is limited.

However, there are cases where a small diameter pipe is difficult to clamp, and in this case, although not illustrated in detail, the clamping jaw 360 is attached to the end of the clamping jaw by using a magnet to attach a small diameter to the pipe. It can also be clamped.

The clamping pressure driving unit 340 is operated by hydraulic pressure or pneumatic pressure, the moving rod 342 is vertically advanced in the clamping frame 320, and coupled to the clamping rotating plate 330 at the tip of the moving rod 342 The pressure plate 344 may be hinged.

The clamping jaw operating piece 362 is inserted into the inner guide slot 350, and the clamping rotating plate 330 is clockwise as the moving rod 342 of the clamping pressure driving unit 340 moves forward as shown in FIG. 7. When rotated, the clamping jaw operating piece 362 is moved from one side of the inner guide slot 350 to the other side, so that the clamping jaw 360 protrudes toward the inside of the opening 310 to clamp the outer circumferential surface of the pipe. .

In addition, the transfer guide piece 364 may be inserted into the external guide slot 352 to guide rotation of the clamping rotating plate 330.

On the contrary, when the movable rod 342 of the clamping pressure driving unit 340 is contracted, as shown in FIG. 8, the clamping rotating plate 330 is rotated counterclockwise, so that the clamping jaw operating piece 362 has an internal guide slot. As the other side of the 350 is moved to one side, the clamping jaw 360 is contracted to release the clamping of the pipe.

9 and 10 show a state in which the orbital actuating part of the apparatus of FIG. 3 is coupled to the other side of the pipe clamping part.

As shown in FIGS. 9 and 10, the orbital actuator 400 includes an orbital frame 420 and an orbital frame 420 having an opening 410 formed at the center thereof so as to correspond to the opening 310 of the pipe clamping part 300. Orbital rotating plate 430 rotatably attached to the), the tool portion 440, and the orbital rotating plate 430 to which the tool is attached to perform cutting by cutting a specified amount according to the rotation of the orbital rotating plate 430, And a driving unit (not shown) connected to each other.

The orbital frame 420 is a portion connecting the main frame 12 and the orbital rotating plate 430, and an axial protrusion 422 may be provided on an inner circumferential surface thereof.

An opening 432 is formed at the center of the orbital rotating plate 430 to form a circumferential groove 434 coupled to the axial protrusion 422 of the orbital frame 420, and the gear 436 is machined and attached to the outer circumference thereof. It is rotated by the operation of the driving unit (not shown). The drive may be a drive using fluid or electricity, or may employ a mechanism configured by manual operation.

The tool portion 440 includes a cutting bite 442 attached to the cutting insert to cut the pipe, an improvement bite 444 for improving the pipe, and a cutting and improving bite 442 and 444. It may include a tool cutting mechanism 450 attached to the orbital rotating plate 430 to transfer a predetermined amount.

In FIG. 10, a pair of cutting and improving bites 442 and 444 are shown to be attached at equal intervals so as to face each other up, down, left and right of the orbital rotating plate 4320, but if necessary, the cutting bite and the improvement bite are Appropriate positioning can be applied to various applications.

The tool cutting mechanism 450 uses a ball screw or a moving screw to move the cutting and improving bite 442 and 444 in the circumferential direction of the pipe, and at the end thereof, the orbital rotating plate 430 is rotated about one rotation (1). Rotational teeth (not shown), each time it rotates, a rotational tooth (not shown) that contacts the tool trigger (not shown) and induces or retracts the cutting and improving bite 442, 444 by a specified feed amount. It can be composed of).

In addition, although not illustrated in detail, the tool 440 may be configured to be moved forward and backward in the longitudinal direction by two driving shafts, so that the improved shape of the pipe may be variously implemented.

In the embodiment of the present invention, the cutting and improving bite 442 and 444 are attached to the upper and lower left and right of the orbital rotating plate 430 at intervals of 90 degrees, respectively, and are transported by the tool cutting mechanism 450.

On the other hand, the orbital operation unit 400 may further include a tool trigger (not shown) that can implement an operation in which the tool unit 440 is cut in a specified amount every one rotation of the orbital rotating plate 430 by a mechanical switching operation. Can be. The tool trigger can also determine the start and end of the machining operation through forward and backward motions. That is, the machining may be performed when the tool trigger is advanced, and the machining may be terminated when the tool trigger is backward.

In addition, the orbital operation unit 400 is a tool initialization mechanism for initializing the position of one or more tool cutting mechanism 450 and the tool unit 440 to a position suitable for processing after the machining is completed, for further processing ( Not shown).

The pipe cutting and improving apparatus 100 of the present invention may include an auxiliary pipe clamping part 500 as shown in FIGS. 11 to 13.

As illustrated in FIGS. 11 to 13, the auxiliary pipe clamping part 500 is disposed at the front and rear ends of the pipe clamping part 300 described above, and is moved left and right on the transport table 510 and the transport table 510. A pair of guide block 520, the jaw coupling portion 530 attached to the guide block 520 and the jaw coupling portion 530 to clamp the left and right sides of the pipe in accordance with the movement of the guide block 520, Jaw rolling drive means for driving 540 is included.

Both ends of the ball screw or 1 pinion / 2 rack structure can be applied to the feed table 510 so that the guide block 520 can be simultaneously reduced / expanded by one drive unit. Was applied.

As illustrated in FIG. 11, as the feeder 510 is applied to the bottom of the pinion 522, the rack 514 is installed on the left and right of the pinion 522. As the linear guide 512 is coupled, pushing and pulling the moving part to which the linear guide 512 coupled to any one rack 514 is attached, the linear guide 512 coupled to the other rack 514 Since the moving part attached to) is also driven, the guide block 520 can be moved by the same amount at the same time.

As such, the clamping operation may be performed as the guide block 520 is simultaneously reduced / expanded by one driving, thereby making it easy to secure the roundness of the pipe.

The pair of jaw coupling portions 530 arranged in a symmetrical structure are rotatably installed on the bracket 532 and the bracket 532 to which the guide bar 536 is linearly moved from the guide block 520, respectively. A pair of left and right auxiliary jaws 534 clamped in a direction perpendicular to the outer circumferential surface of the pipe.

Jaw rolling drive 540 comprises a rolling portion 548 consisting of a sprocket 544 attached to auxiliary jaw 534 and a chain 546 coupled to sprocket 544. The rolling unit 548 may be configured to enable a driver using a fluid or a driver using electricity or a manual operation. In this embodiment, a fluid actuator is used.

When the jaw rolling drive 540 is actuated, the clamped pipe is moved as the auxiliary jaw 534 rotates. The jaw rolling drive unit 540, that is, the rolling unit 548 is capable of adjusting the speed through the controller.

On the other hand, the pipe cutting and improving apparatus 100 of the present invention may further include a position compensation sensing mechanism 550 for measuring the moving distance of the pipe. In the case where slip occurs in the pipe moved by the operation of the jaw rolling driving means 540 and the pipe does not move exactly as a preset moving distance, the moving distance and setting measured by the position compensation sensing mechanism 550 The feedback control of the rolling unit 548 may be performed through the controller to compensate for the difference in the moved distance.

14-16 are schematic diagrams illustrating a cutting and improving welding method.

As shown in the drawing, the pipe cutting and improving apparatus 100 of the pipe automatic transfer mechanism 10, the pipe 2 is continuously conveyed on the main frame 12 of the pipe centering unit 200 and the center position of the pipe When centering the orbital rotation center and then clamping the centered pipe in the pipe clamping part 300, as the orbital rotating plate 430 of the orbital operating part 400 is rotated, the cutting bite of the tool part 440 ( 442 or the improvement bite 444 is conveyed to the cutting depth set by the tool cutting mechanism 450, so that both ends of each pipe can be improved. That is, as shown in Figs. 14 and 15, single V improvement and double V improvement can be performed, and as shown in Fig. 16, cutting and improving operations can be performed simultaneously.

As described above, the pipe cutting and improving apparatus 100 of the present invention can reduce the work load of the worker by automating the cutting and improving work of the pipe, and can eliminate the quality error resulting from the manual grinding work, and the work speed increases. As a result, productivity of spool production can be improved, and the number of workers can be minimized.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. For example, a person skilled in the art can change the material, size and the like of each constituent element depending on the application field or can combine or substitute the embodiments in a form not explicitly disclosed in the embodiments of the present invention. It is to be understood that the invention is not limited to the disclosed embodiments. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and that such modified embodiments are included in the technical idea described in the claims of the present invention.

100: pipe cutting and improving device 200: pipe centering part
210: pipe holder 212: V-shaped rotary roller
220: cradle frame 230: screw block
240: screw shaft 250: fixed plate
260: drive motor 300; Pipe Clamping Part
320: clamping frame 330: clamping rotating plate
340: clamping pressure drive unit 350: guide slot
360: clamping jaw 400: orbital actuator
420: orbital frame 430: orbital rotating plate
440: tool portion 442: cutting bite
444: improvement byte 450: tool cutting mechanism
500: auxiliary pipe clamping unit 510: feed table
520: guide block 530: jaw coupling
540: jaw rolling drive means 550: position compensation sensing mechanism

Claims (15)

A pipe centering part which is moved up and down to center the pipe to match the center of the pipe and the orbital rotational center;
A pipe clamping part for clamping the centered pipe;
An orbital operating unit which simultaneously performs cutting and improving operations on the clamped pipe;
And a controller for controlling driving of the pipe centering portion, the pipe clamping portion, and the orbital actuating portion. The method of claim 1,
The orbital operation unit,
Pipe cutting and retrofitting device for performing double V improvement on each end of each pipe. The method of claim 1,
The pipe centering unit
A plurality of pipe holders on which the conveyed pipes are seated;
A cradle frame in which the pipe cradles are installed;
Screw blocks mounted on both sides of the lower portion of the cradle frame,
A screw shaft rotatably attached to the screw block,
And a drive motor unit for rotating the screw shaft, wherein the screw shaft is rotated according to the forward and reverse rotation operation of the drive motor unit to move the pipe holder up and down. The method of claim 1,
The pipe clamping portion
Clamping frame into which the pipe is inserted,
A clamping rotating plate attached to the clamping frame;
A clamping pressurizing drive unit for rotating the clamping rotating plate by a linear movement, a guide slot formed in a plurality of inside and outside to guide the rotation of the clamping rotating plate,
And a plurality of clamping jaws protruding or contracting to clamp the outer circumferential surface of the pipe as the clamping swivel rotates. 5. The method of claim 4,
And an auxiliary jaw attached to the end of the clamping jaw to clamp a small diameter pipe. 5. The method of claim 4,
The jaw rolling drive means includes a rolling portion consisting of a sprocket and a chain attached to the auxiliary jaw, wherein the rolling portion is a pipe cutting and improving device is controlled by the controller. 5. The method of claim 4,
The clamping jaw operating piece is inserted into the inner guide slot and moved according to the rotation of the clamping rotating plate to protrude the clamping jaw to clamp the outer circumferential surface of the pipe.
A pipe cutting and improving device for inserting a feed guide piece into the outer guide slot to guide rotation of the clamping rotating plate. The method of claim 1,
The orbital actuating unit rotates the orbital frame, an orbital rotating plate rotatably attached to the orbital frame, a tool unit to which a tool is attached to be cut and cut by a specified amount according to the rotation of the orbital rotating plate, and the orbital rotating plate is rotated. Pipe cutting and improving device comprising a drive connected to one another. The method of claim 8,
The tool part includes a cutting bite for cutting a pipe, an improvement bite for beveling / chamfering the pipe, and a tool cutting mechanism attached to the orbital rotating plate to convey a predetermined amount of the cutting and improvement bite. Device. The method of claim 8,
The orbital actuating part includes a tool trigger that implements an operation in which the tool part is plunged by a predetermined amount every one revolution of the orbital rotating plate by mechanical switching operation, and after processing is completed, one or two or more of the tools for further processing. And a tool initialization mechanism for initializing the cutting position and the position of the tool portion to the machining position. The method of claim 1,
And an auxiliary pipe clamping portion arranged to secure the roundness of the pipe when performing a clamping operation. The method of claim 11,
The auxiliary pipe clamping part includes a feed table, a pair of guide blocks moved left and right at the object to be transported, a jaw coupling part attached to the guide block to clamp the left and right surfaces of the pipe according to the movement of the guide block, and a rolling part. Jaw rolling drive means for driving a jaw coupling portion, the pipe cutting and improving device that the guide block is simultaneously reduced / expanded by a single drive. 13. The method of claim 12,
The feeder is a one-pinion / two rack structure. When the linear guide attached to the bottom pushes and pulls the moving part, the pipe is driven by the rack / pinion at the center of the opposite side to move the guide block at the same time by the same amount. Cutting and improving device. 13. The method of claim 12,
Pipe cutting and improving device further comprising a position compensation sensing mechanism for measuring the moving distance of the pipe. 15. The method of claim 14,
And a feedback control of the rolling part through the controller to compensate for the difference between the movement distance measured by the position compensation sensing mechanism and the set movement distance.

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