JP2003170301A - End face machining device of pipe, and its method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an end face machining device of a pipe and its method that have high cutting efficiency providing high accuracy in pipe length. <P>SOLUTION: In the end face machining device of the pipe for cutting both end faces of the pipe, a right end face machining machine 6 cuts the first one end face of a steel pipe 2 by a predetermined amount, a steel pipe length measuring machine 8 measures a position of the other end, a length of the steel pipe is calculated based on the position of the other end and the predetermined cutting amount, the calculated value is compared with a desired pipe length, a required cutting length of the end face machining machine is calculated, and the calculated cutting mount is indicated to the end face machining machine. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe end face processing apparatus and method, for example, a steel pipe manufactured by a production line and cut into a predetermined chamfered shape so as to have a predetermined length. It is applied to the end face processing equipment, etc.

[0002]

2. Description of the Related Art FIG. 9 shows an overall plan view of a conventional pipe end surface processing apparatus. The device shown in FIG. 9 is an end face processing device for a steel pipe using a steel pipe as the pipe.

As shown in FIG. 9, a steel pipe end face processing device 30.
Has a steel pipe support row R1 to R6, which will be described later, and has a plane rectangular incoming steel pipe support section (means for pitch conveying the steel pipe 2 in the pipe radial direction (sideways) in the pitch conveyance direction 3 of the steel pipe 2. Hereinafter, this is abbreviated as a section.) 4 and a steel pipe support row R3 near the carrying-in side of the steel tube in the section 4 and a pipe clamp coaxially arranged on the steel tube 2 at one end side (right side in FIG. 9) of the steel tube 2. 5 and the first end face processing machine (hereinafter,
This is called a right end face processing machine. ) 6 and a steel pipe support row R5 near the unloading side of the steel pipe in the section 4 and a pipe clamp 9 and a second end face machining coaxially arranged on the steel pipe 2 at the other end side (left side in FIG. 9) of the steel pipe 2. Machine (hereinafter, referred to as a left end surface processing machine) 10 and the left end surface processing machine 10
A horizontal girder 7 arranged in a gate shape across the section 4 in parallel to the direction along the steel pipe 2 at the position of the steel pipe supporting row R5, and a steel pipe length measuring device attached to the horizontal girder 7 and moving along the horizontal girder 7. And a plurality of aligning pipes for pushing and pulling out the pipe arranged so as to engage with the steel pipe 2 at the position of the steel pipe support row R3 having the right end surface processing machine 6 and the steel pipe support row R5 having the left end surface processing machine 10. The roll 11 and the delivery-side delivery means 12 arranged on the delivery side of the section 4 are provided.

The steel pipe end face processing device 30 first performs a cutting process on the end face of the steel pipe 2 using the right end face processing machine 6 according to the processing procedure described later, and then,
After measuring the length of the steel pipe 2 using the steel pipe length measuring device 8, the other end face of the steel pipe 2 is cut using the left end face processing machine 10,
It is trimmed to the set predetermined length.

In FIG. 9, the conveying operation of the steel pipe 2 based on this processing procedure is shown by P1 to P12 in order. P1 indicates a loading operation of the steel pipe 2 into the steel pipe end surface processing device 30, and P2, P
3, P6, P7, and P10 indicate the conveyance operation by pitch conveyance, P4 and P5 indicate the pushing / pulling conveyance operation by the right end surface processing machine 6, and P8 and P9 indicate the pushing / pulling operation by the left end surface processing machine 10. The drawing conveying operation is shown, and P11 and P12 show the conveying operation to the exit side carrying-out means 12 after cutting.

FIG. 10 shows a steel pipe end surface processing apparatus 30-
A line arrow view is shown. As shown in FIG. 10, the section 4 is
It has six rows of steel pipe support rows R1 to R6, the steel pipe support rows R1 to R6 are parallel to the longitudinal direction of the steel pipe 2, and are arranged on the central axis of each steel pipe support row. Not equipped with each pipe fixed pedestal. The fixed pipe pedestals are arranged at a fixed distance from each other.

The section 4 serves as a pipe conveying means and is repeatedly operated at a constant time interval and a constant distance interval so that the steel pipe 2
Pitch transporting means 15 for transporting the steel pipe 2 is provided. The pitch transporting means 15 has five rows of rotary drive shafts 16 arranged at a constant distance in parallel with the longitudinal direction of the steel pipe 2, and each rotary drive shaft 16 A plurality of rotary drive arms 17 provided so as to be simultaneously driven to rotate upward, and a plurality of rotary drive arms 17 provided at respective ends of the plurality of rotary drive arms 17 so as to always maintain an upward posture by gears or the like. And the pipe pedestal 18 of FIG.

In the pitch conveying means 15, when the pipe pedestal 18 of the steel pipe support row R1 is rotationally driven to the next steel pipe support row R2, the pipe pedestal 18 of the steel pipe support row R2 is similarly moved to the next steel pipe support row R2. It is rotationally driven to R3. Then, the pipe fixed pedestal on the central axis of the steel pipe support row R2 and the pipe pedestal 18 of the steel pipe support row R1 that has been rotationally driven overlap each other on the same row to transfer the steel pipe 2. ing. By simultaneously performing such an operation in each steel pipe support row, the steel pipes 2 are sequentially conveyed to each steel pipe support row. The pipe pedestals 18 and the pipe fixed pedestals of the adjacent steel pipe support rows are installed in consideration of their size, arrangement, and operating position so that they do not collide with each other when viewed from above.

The steel pipe length measuring device 8 includes a horizontal girder 7 having a gate shape, a movable body 19 which is horizontally engaged with the horizontal girder 7 by a roller or a slide shoe, and the movable body 19 is downwardly moved by a cylinder or the like. A frame 20 supported so as to be able to move up and down, and a transmission type tube end detection sensor 2 such as a laser provided at the lower end of the frame 20.
1 and. As shown in FIG. 10, the tube end detection sensor 21 is usually provided with a pair of light emitters and light receivers in one row at opposite positions of the frame 20 which is bifurcated.

The steel pipe length measuring device 8 is arranged in accordance with the position for detecting the steel pipe 2 on the pipe fixed pedestal located at a constant height.
The frame 20 is lowered by the set distance. Then, the moving body 19 moves on the horizontal girder 7 along the length direction of the steel pipe 2, whereby the pipe end detection sensor 21 detects the pipe end of the steel pipe 2, and calculates the length L1 of the steel pipe 2, Give the measurement result. By subtracting the set target length L0 of the steel pipe 2 from the length L1 of the steel pipe 2 of the measurement result, the cutting allowance D2 (D2 = L1-L0) on the left end side of the steel pipe 2 is calculated.

FIG. 11 shows a flow chart of the processing of the end surface processing of the steel pipe by the steel pipe end surface processing device 30.

First, the steel pipe 2 is attached to the steel pipe end surface processing device 30.
Is carried in and is pitch-conveyed from the carrying-in side to the steel pipe support row R3 in which the right end surface processing machine 6 is located in the section 4 (steps S1 to S).
2).

Next, the steel pipe 2 is pushed to the pipe end reference position in the right end surface processing machine 6 by the aligning roll 11 arranged at the intermediate position in the longitudinal direction of the steel pipe 2 (step S3-
1-1). Next, the steel pipe 2 is fixed by the pipe clamp 5 (step S3-1-2). Next, the right end surface processing machine 6 is driven in the direction of the steel pipe 2 by the set depth D1, and the right end of the steel pipe 2 is cut into a predetermined shape such as a groove or a flat surface (step S).
3-2). Next, the pipe clamp 5 is opened (step S3-3-1). Next, the steel pipe 2 is pulled out from the right end surface processing machine 6 into the compartment 4 by the aligning roll 11 (step S3-3-2). Next, the steel pipe 2 is connected to the steel pipe support row R4.
Pitch conveyance is performed (step S3-4).

Next, the steel pipes 2 are pitch-conveyed to the steel pipe support row R5 having the left end surface processing machine 10 (step S4).

Next, the steel pipe 2 is pushed to the pipe end reference position in the left end surface processing machine 10 by using a plurality of aligning rolls 11 (step S5-1-1). Next, the steel pipe 2 is fixed by the pipe clamp 9 (step S5-1-2).
Next, in this state, the steel pipe length measuring device 8 detects the right end position of the steel pipe 2 to measure the steel pipe length L1.
The cutting allowance D2 (D2 = L1-L0) in step S5-2-1 is calculated (step S5-2-1). Next, the left end surface processing machine 10 is driven in the direction of the steel pipe 2 by the cutting allowance D2, the left end of the steel pipe 2 is cut into a predetermined shape such as a groove or a flat surface, and the processing of the predetermined length of the steel pipe 2 is completed ( Step S5-2-2). Next, the pipe clamp 9 is opened (step S5-3-1). next,
The steel pipe 2 is pulled out from the left end surface processing machine 10 into the compartment 4 by the aligning roll 11 (step S5-3-2).
Next, the steel pipes 2 are conveyed by pitch to the steel pipe support row R6 (step S5-4).

Finally, the steel pipe 2 is conveyed from the steel pipe support row R6 to the outlet side unloading means 12 (steps S6 to S7).

FIG. 12 shows the connection between each processing step of "measurement / calculation" and "end surface cutting" in the steel pipe support row R5 having the left end surface processing machine 10 in the steel pipe end surface processing apparatus 30 and the steps before and after the processing steps. FIG. 3 is a diagram showing the time required for each step.
(Corresponds to step S5 in FIG. 11.) The number of each step indicates time (second), which indicates the time required for a steel pipe having a diameter φ = 139 mm and a thickness t = 10 mm. In the case of the steel pipe end face processing device 30, the cycle time is determined by the column that performs the process that takes the longest time among all the steel pipe support columns, that is, the treatment in the steel pipe support column R5 including the left end face processing machine 10. FIG. 12 is a process and shows the process and required time in the steel pipe support row R5.

[0018]

In the above-mentioned steel pipe end face processing apparatus 30, since the steel pipes 2 are simultaneously conveyed to the next steel pipe support row by the pitch conveying means 15, the steel pipes per continuous pipe are processed. The cycle time, that is, the cycle time, depends on the column having the most processing time in each of the steel pipe supporting columns. In the case of the steel pipe end face processing device 30,
The time obtained by adding the transportation time in the pitch transportation means 15 to the processing time in the steel pipe support row R5 with the left end surface processing machine 10 is
It determines the cycle time. However, in each processing step in the steel pipe support row R5 with the left end surface processing machine 10,
Since "length measurement / calculation" and "left end face cutting" are carried out successively in succession, it is difficult to shorten the time further and the efficiency of the cutting process cannot be improved.

On the steel pipe manufacturing line, burrs are often left at the end of cutting at the end of the steel pipe 2 cut with a disc-shaped cold saw or the like. In such a case, the pipe end detection sensor 21 erroneously detects the burr portion as the pipe end, and directly calculates the cutting allowance D2 in the second end face processing machine to cut, and as a result, both end faces are cut. An error may occur in the length of the processed steel pipe. In particular, in the conventional steel pipe end surface processing apparatus 30, since there is only one pair of pipe end detection sensors 21 of the steel pipe length measuring device 8, the steel pipe 2
If there is a burr at the end of the pipe due to cutting by pipe end processing and the burr part is mistakenly detected as the pipe end, this error cannot be corrected and the final cutting allowance of the pipe end is also wrongly calculated. It will be. Therefore, an error may occur in the machining of the pipe end, and the length of the steel pipe may not be uniform.

In order to solve the above problems, it is an object of the present invention to provide a pipe end face processing device which has a high efficiency of cutting treatment and a high precision of the length of a steel pipe.

[0021]

A pipe end surface processing apparatus according to the present invention for solving the above-mentioned problems is a pipe end surface processing apparatus for cutting both end surfaces of a pipe. It is characterized in that the cutting process of (1) is performed in parallel with the measurement of the length of the pipe by the pipe length measuring device. In the above device, cutting of the end surface of the pipe and length measurement / calculation of the pipe can be performed in parallel.

According to the present invention, there is provided an end face machining apparatus for a pipe according to the present invention, which is an end face machining machine at another end face depending on the length of the pipe measured by the pipe length measuring device and the target length of the pipe. And a cutting amount instructing means for calculating the required cutting amount and sending the cutting amount to another end surface processing machine as an instruction value. In the above device, the results of the length measurement and calculation performed at the same time as the cutting of the first end face of the pipe can be reflected in the cutting of the other end face.

The pipe end face processing apparatus according to the present invention which solves the above-mentioned problems compares the indicated value with the actual cutting amount of the end face processing machine at the other end face to obtain the target pipe length. It is characterized by comprising a cutting amount confirmation means for confirming that.

A pipe end surface processing apparatus according to the present invention which solves the above-mentioned problems is provided with a pipe conveying means for conveying the pipe in the pipe radial direction, and has a fixed pedestal for receiving the pipe conveyed by the pipe conveying means. A pipe support section having a plurality of pipe support rows continuously provided in parallel to the longitudinal direction of the pipe, and a pipe support section arranged in an arbitrary pipe support row of the pipe support section, for cutting a first end surface of the pipe.
End face processing machine and the first end face processing machine are arranged in the same row as the pipe support row, the pipe length measuring device for measuring the length of the pipe, and the first end face processing machine are arranged. And an aligning roll arranged in the same row as the pipe supporting row for pushing the pipe into the first end face processing machine and for pulling out the pipe from the first end face processing machine, and the first end face processing machine. A second end surface processing machine, which is arranged in a tube support row rearward of the arranged pipe support row in the traveling direction of the pipe and cuts the other end surface of the pipe, and the second end surface processing machine are arranged. It is characterized in that it is arranged in the same row as the tube support row and is constituted by an aligning roll for pushing the tube into the second end surface processing machine and for pulling out the tube from the second end surface processing machine. In the above device, by arranging the first end face processing machine for cutting the end face of the pipe and the pipe length measuring device for measuring the length of the pipe in the same row of the pipe support, the end face of the pipe is cut. And the length of the tube can be measured simultaneously.

A pipe end surface processing apparatus according to the present invention for solving the above-mentioned problems is provided with a pipe conveying means for conveying the pipe in the pipe radial direction, and has a fixed pedestal for receiving the pipe conveyed by the pipe conveying means. A pipe support section having a plurality of pipe support rows continuously provided in parallel to the longitudinal direction of the pipe, and a pipe support section arranged in an arbitrary pipe support row of the pipe support section, for cutting a first end surface of the pipe.
End face processing machine and the first end face processing machine are arranged in the same row as the pipe support row, the pipe length measuring device for measuring the length of the pipe, and the first end face processing machine are arranged. A first aligning roll arranged in a pipe support row in front of the pipe in the traveling direction of the pipe, and moving the pipe in the longitudinal direction; and a pipe support row in which the first end surface processing machine is arranged. A second tube, which is arranged in the tube support row behind the tube in the traveling direction and moves in the longitudinal direction of the tube
Second end face processing machine which is arranged in a pipe support row behind the pipe of the pipe support row in which the second aligning roll and the second aligning roll are arranged and which cuts the other end face of the pipe. It is characterized by having and. In the above device, by arranging the first end face processing machine for cutting the end face of the pipe and the pipe length measuring device for measuring the length of the pipe in the same row of the pipe support, the end face of the pipe is cut. And the length of the tube can be measured simultaneously.

The pipe end face processing apparatus according to the present invention for solving the above-mentioned problems is characterized in that the pipe length measuring device is provided with upper and lower two rows of pipe end detection sensors. In the above device, the pipe end position can be accurately detected at all times by using the two rows of pipe end detection sensors.

A pipe end face processing method according to the present invention for solving the above-mentioned problems is a pipe end face processing method for cutting both end faces of a pipe, in which the first end face of the pipe is cut by a end face processing machine. It is characterized in that it is performed in parallel with the measurement of the length of the pipe by the length measuring device.

The pipe end face processing method according to the present invention which solves the above-mentioned problems is based on another end face end processing machine according to the length of the pipe measured by the pipe length measuring device and the target pipe length. Is calculated, and the cutting amount is sent to another end surface processing machine as an instruction value.

In the pipe end face processing method according to the present invention which solves the above-mentioned problems, the indicated value is compared with the actual cutting amount of the end face processing machine at the other end face to determine the target pipe length. It is characterized by confirming that there is.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION (Embodiment 1) FIG. 1 is a plan view of an entire pipe end surface processing apparatus according to an embodiment of the present invention. The apparatus shown in FIG. 1 is an end surface processing apparatus for a steel pipe using a steel pipe as a pipe, and is an apparatus for finishing the end surface of the steel pipe into a predetermined chamfered shape and aligning it to a predetermined length.

As shown in FIG. 1, a steel pipe end surface processing apparatus 1
Is a plane rectangular carry-in steel pipe support having steel pipe support rows R1 to R6 and having means for conveying the pitch of the steel pipe 2 in the pipe radial direction (horizontally) in the traveling direction 3 of the pitch conveyance of the steel pipe 2 as pipe conveying means. Section (hereinafter, abbreviated as section) 4
And a steel pipe support row R3 near the carrying-in side of the steel pipe of the section 4
Then, at one end side (right side in FIG. 1) of the steel pipe 2, a pipe clamp 5 and a first end surface processing machine (hereinafter referred to as a right end surface processing machine) 6 coaxially arranged with the steel pipe 2, and the right end surface. A horizontal girder 7 arranged in a gate shape across the section 4 parallel to the direction along the steel pipe 2 at the position of the steel pipe supporting row R3 where the processing machine 6 is mounted, and a steel pipe measuring device mounted on the horizontal girder 7 and moving along the horizontal girder 7. A pipe clamp 9 and a second end face coaxially arranged on the steel pipe 2 at the other end side (the left side in FIG. 1) of the steel pipe 2 at the length device 8 and the steel pipe support row R5 near the carrying-out side of the steel pipe of the section 4. Steel pipe support row R3 including a processing machine (hereinafter, referred to as a left end surface processing machine) 10 and a right end surface processing machine 6.
And a plurality of aligning rolls 11 for pushing in / pulling out the pipe arranged so as to engage with the steel pipe 2 at the position of the steel pipe supporting row R5 where the left end surface processing machine 10 is located, and an outlet side arranged on the carry-out side of the section 4. And a carrying-out means 12.

The pipe clamp 5 is provided with a pipe end detection sensor 13 which is of a fixed position and which is similar to the pipe end detection sensor 21 of the steel pipe length measuring device 8. The pipe clamp 9 is also provided with a similar pipe end detection sensor 14. The pipe end detection sensor 14 is also used to confirm the cutting amount in the left end surface processing machine 10 by a cutting amount confirmation means (not shown) in a processing procedure described later.

The construction of the steel pipe length measuring device 8 itself may be the same as that of the steel pipe length measuring device 8 shown in FIG. However, the cutting amount D2 calculated from the length of the steel pipe 2 measured by the steel pipe length measuring device 8 and the target length of the steel pipe is
The cutting amount instruction means (not shown) sends the instruction value to the left end surface processing machine 10.

The above-mentioned steel pipe support rows R1 to R6 and the pitch conveying procedure 15 which constitute the section 4 and convey the steel pipe 2 at a pitch,
It may be similar to that shown in FIGS. 9 and 10. As the means for transporting the steel pipe 2, other means may be used as long as the steel pipe 2 can be sequentially transported in the pipe radial direction.

The above-described steel pipe end surface processing apparatus 1 uses substantially the same components as the conventional steel pipe end surface processing apparatus 30.
However, in order to solve the above problems, the steel pipe end surface processing apparatus 1 is configured by rearranging the layout of the constituent elements.

The concrete difference between the steel pipe end surface processing apparatus 1 and the conventional steel pipe end surface processing apparatus 30 is that the steel pipe length measuring device 8 is located at the position of the steel pipe support row R3 where the right end surface processing machine 6 is located. The layout is opposite to that of the processing device 30. Further, only the left end surface processing machine 10 is independently provided at the position of the steel pipe support row R5 where the left end surface processing machine 10 is located. The steel pipe end surface processing apparatus 1 is provided with position-fixed pipe end detection sensors 13 and 14 on the pipe clamp 5 and the pipe clamp 9 in accordance with the layout change of the above-mentioned components. Further, a cutting amount indicating means for sending an indicated value from the measurement result of the steel pipe length measuring device 8 to the left end surface processing machine 10, and a cutting amount confirmation means for confirming the cutting amount performed by the left end surface processing machine 10 based on the above indicated value. With.

The steel pipe end face processing apparatus 1 first performs the cutting process on the end face of the steel pipe 2 using the right end face processing machine 6 according to the processing procedure described later, and at the same time as the cutting process. The length of the steel pipe 2 is measured by using the steel pipe length measuring device 8, and then the other end face of the steel pipe 2 is cut by using the left end face processing machine 10 and cut to a predetermined set length. . Unlike the conventional apparatus, the steel pipe end surface processing device 1 is characterized in that the length of the steel pipe 2 is measured at the same time as the cutting process to shorten the cycle time.

In FIG. 1, the conveying operation of the steel pipe 2 based on this processing procedure is shown by P1 to P12 in order. P1 indicates a loading operation of the steel pipe 2 into the steel pipe end surface processing apparatus 1, and P2, P
3, P6, P7, and P10 indicate a conveyance operation by pitch conveyance, P4 and P5 indicate a pushing / pulling conveyance operation by the right end surface processing machine 6, and P8 and P9 indicate a left end surface processing machine 1.
0 shows the push-in / pull-out transport operation, P11,
P12 shows the transport operation to the delivery side delivery means 12 after cutting.

FIG. 2 shows a flow chart of the processing of the end surface processing of the steel pipe by the steel pipe end surface processing device 1. Further, FIG. 3 shows a detailed flowchart of the steps of “length measurement” and “cutting”, that is, steps S3 and S5 in FIG.

First, the steel pipe 2 is loaded into the steel pipe end face processing apparatus 1 and pitch-transported from the loading side to the steel pipe support row R3 where the right end face processing machine 6 in the compartment 4 is located (steps S0 to S).
2).

Next, the aligning roll 11 pushes the steel pipe 2 to the pipe end reference position in the right end surface processing machine 6 (step S3-1-1). Next, the steel pipe 2 is fixed by the pipe clamp 5 (step S3-1-2). Next, the pipe end detection sensor attached to the steel pipe length measuring device 8 detects the pipe end position on the left end side (step S3-2b-1), or
Pipe end detection sensor 13 mounted on the pipe clamp 5
Detects the pipe end position on the right end side (step S3-
2a-1). During this time, the right end surface processing machine 6 is activated in parallel. Next, based on the pipe end position data on the right end side by the pipe end detection sensor 13 of the pipe clamp 5, the feed amount of the right end surface processing machine 6 is calculated so that the cutting depth D1 is set in advance (step S3). -2a-2), the right end surface processing machine 6 is advanced from the standby position by the feed amount described above, and cut into a predetermined shape such as a groove or a flat surface (step S3-2a-).
3). Next, the length L2 of the steel pipe 2 is calculated by calculating from the pipe end position data on the left end side detected by the steel pipe length measuring device 8 and the preset cutting amount data of the right end surface processing machine 6 (( In step S3-2b-2), the required cutting amount D2 (D2 = L0-L2) by the left end surface processing machine 10 is obtained by comparing with the target length L0 of the steel pipe which is designated in advance.
Is calculated (step S3-2b-3). Cutting amount D above
2 is sent as an instruction value to the left end surface processing machine 10 by the cutting amount instruction means. Next, the pipe clamp 5 is opened (step S3-3-1). Next, the steel pipe 2 is pulled out from the right end surface processing machine 6 into the compartment 4 by the aligning roll 11 (step S3-3-2). Next, the steel pipes 2 are conveyed by pitch to the steel pipe support row R4 (step S3-4).

Next, the steel pipes 2 are pitch-conveyed to the steel pipe support row R5 having the left end surface processing machine 10 (step S4).

Next, using a plurality of aligning rolls 11, the steel pipe 2 is pushed to the pipe end reference position in the left end surface processing machine 10 (step S5-1-1). Next, the steel pipe 2
Fix with the pipe clamp 9 (step S5-1).
2). Next, the pipe end detection sensor 14 mounted on the pipe clamp 9 detects the pipe end position on the left end side (step S5-2-1), and the left end is obtained from the data of the required cutting amount D2 sent as the instruction value. The advance position of the surface processing machine 10 is calculated (step S5-2-2), and by driving to that position, the required cutting amount D2 is cut from the pipe end position and the left end of the steel pipe is cut into a predetermined shape such as a groove or a flat surface. Then, the processing of the steel pipe 10 is completed (step S5-2-3). After the completion of cutting, the cutting amount confirmation means detects the pipe end position on the left end side again using the pipe end detection sensor 14 mounted on the pipe clamp 9 (step S5-2-4), and the required cutting amount D2. And the target cutting amount is confirmed (step S5-2-5). Next, the pipe clamp 9 is opened (step S5-3-1). Next, the steel pipe 2 is pulled out from the left end surface processing machine 10 into the compartment 4 by the aligning roll 11 (step S5-3-2). Next, the steel pipes 2 are conveyed by pitch to the steel pipe support row R6 (step S5-4).

Finally, the steel pipe 2 is conveyed from the steel pipe support row R6 to the outlet side unloading means 12 (steps S6 to S7).

FIG. 4 shows the "measurement / calculation" in the steel pipe support row R3 in the steel pipe end face processing apparatus 1 where the right end face processing machine 6 is provided.
FIG. 5 is a diagram showing the connection between each processing step of “right end face cutting” and the steps before and after it, and the time required for each step. (Corresponds to step S3 in FIGS. 2 and 3.) The number of each step indicates time (second), which indicates the time required for a steel pipe having a diameter φ = 139 mm and a thickness t = 10 mm. . 12
Compared with the process and required time of the conventional steel pipe end surface processing apparatus 30 shown in, the steel pipe end surface processing apparatus 1 has a cycle time of 20 by performing “length measurement / calculation” and “right end surface cutting” in parallel. %, The time required for this process becomes the shortest, and the effect of significantly improving the cutting processing capacity can be obtained.

(Embodiment 2) FIG. 5 is a plan view of an entire pipe end surface processing apparatus according to another embodiment of the present invention. The device shown in FIG. 5 is also an end face processing device for a steel pipe using a steel pipe as the pipe.

The steel pipe end surface processing device 22 has substantially the same structure as the steel pipe end surface processing device 1 shown in FIG. 1, except for the arrangement of the aligning rolls 11. Specifically, as shown in FIG. 5, the steel pipe end surface processing device 22 sets the aligning roll 11 to the R of the steel pipe support row with the right end surface processing machine 6.
3 Steel pipe support row R2 on the front row side, steel pipe support row R3 with the right end surface processing machine 6 and steel pipe support row R5 with the left end surface processing machine 10
Is provided in the steel pipe support row R4 in the middle row.

The steel pipe end face processing device 22 is a device capable of processing end face processing of a relatively long steel pipe, and is provided with one aligning roll 11 for each of the steel pipe support row R2 and the steel pipe support row R4. When a plurality of aligning rolls 11 are provided symmetrically for each of the steel pipe support row R2 and the steel pipe support row R4, it is possible to configure an apparatus capable of handling both long and short steel pipe end faces.

In FIG. 5, the conveying operation of the steel pipe 2 based on the processing procedure described later is shown by P1 to P9 in order. P1 indicates a loading operation of the steel pipe 2 into the steel pipe end surface processing device 22, P2,
P4, P5, P7, and P8 indicate a conveying operation by pitch conveyance, P3 indicates a moving operation by the aligning roll 11 toward the right end surface processing machine 6 direction, and P6 indicates a left end surface processing machine 10 direction by the aligning roll 11. To the delivery side unloading means 12 after cutting.

FIG. 6 shows a flowchart of the processing of the end surface processing of the steel pipe by the steel pipe end surface processing device 22. First, the steel pipe 2 is loaded into the steel pipe end face processing device 22 and pitch-transported from the loading side to the steel pipe support line R2 in the front row of the steel pipe support line R3 with the right end face processing machine 6 in the section 4 (steps S0 to S).
1).

Next, in the steel pipe support row R2, the aligning roll 11 moves the steel pipe 2 to a position equivalent to the pipe end reference position of the right end surface processing machine 6 (step S2-
1). Next, the steel pipe 2 is pitch-conveyed to the steel pipe support row R3 in which the right end surface processing machine 6 exists (step S2-2).

Next, the steel pipe 2 is fixed by the pipe clamp 5 (step S3-1). Next, the pipe end detection sensor 21 mounted on the steel pipe length measuring device 8 detects the pipe end position on the left end side, calculates the length L2 of the steel pipe 2, and calculates the length of the target steel pipe specified in advance. From L0, left end surface processing machine 10
The cutting allowance D2 (D2 = L2-L0) is calculated (step S3-2b). In parallel with this, the right end face processing machine 6
Is activated, the steel pipe 2 is advanced from the standby position, the steel pipe 2 is driven in by a preset depth D1, and cut into a predetermined shape such as a groove or a plane (step S3-2a). Next, the pipe clamp 5 is opened (step S3-3). Next, it is conveyed by pitch to the steel pipe support row R4 (step S3-4).

Next, in the steel pipe support row R4, the aligning roll 11 moves the steel pipe 2 to a position equivalent to the pipe end reference of the left end surface processing machine 10 (step S4-
1). Next, the steel pipe 2 is pitch-conveyed to the steel pipe support row R5 where the left end face processing machine 10 is located (step S4-2).

Next, the steel pipe 2 is fixed by the pipe clamp 9 (step S5-1). Next, the left end surface processing machine 10 is moved forward, driven in by the depth D2, and the left end of the steel pipe is cut into a predetermined shape such as a groove or a flat surface to complete the processing of the steel pipe 2 (step S5-2). Next, the pipe clamp 9 is opened (step S5-3). Next, it is conveyed by pitch to the steel pipe support row R6 (step S5-4).

Finally, the steel pipe 2 is conveyed from the steel pipe support row R6 to the outlet side unloading means 12 (steps S6 to S7).

FIG. 7 shows a steel pipe end surface processing device 22
It is a figure showing connection of each processing process of "length measurement / calculation" and "right end face cutting" in the steel pipe support row R3 with the right end face processing machine 6, and the process before and behind it, and the required time of each process.
(Corresponds to step S3 in FIG. 6.) The number of each step indicates time (second), which indicates the time required for a steel pipe having a diameter φ = 139 mm and a thickness t = 10 mm.

The difference from the steel pipe end surface processing apparatus 1 is that the length of the rotary drive arm 12 is long and thus the pipe feeding time is long and the pipe clamping time is long. However, since the moving of the steel pipe 2 toward the right end surface processing machine 6 by the aligning roll 11 is performed by the steel pipe support row R2 in the front row, the time required for this step can be excluded, and the cycle time is the same as in Example 1. Will be the same. Therefore, also in the steel pipe end face processing device 22, by performing “length measurement / calculation” and “right end face cutting” in parallel,
The same time can be shortened, and the effect of significantly improving the cutting processing capacity can be obtained.

(Embodiment 3) FIG. 8 shows another embodiment of the pipe length measuring device in the pipe end face processing apparatus. This is a view of the mounting portion of the pipe end detection sensor of the pipe length measuring device as seen from the front, and a steel pipe is used as the target of pipe end detection.

As shown in FIG. 8, the steel pipe length measuring device 8a is characterized in that pipe end detection sensors 21a and 21b are provided in upper and lower two rows at opposite ends of the lower end of the vertically movable frame 20. Is. The other structure of the steel pipe length measuring device 8a is the same as that of the conventional one, and includes a gate-shaped horizontal girder 7 and a horizontal girder 7.
The steel pipe length measuring machine 8a has a moving body 19 which is engaged with rollers and the like and moves horizontally, a frame 20 which is supported on the moving body 19 by a cylinder or the like so as to be able to move vertically downward, and the pipe end detection sensor 21. ing. As the type of the pipe end detection sensor 21, an area sensor such as a laser system, a non-contact sensor such as a photoelectric switch, or a contact sensor such as a micro switch can be applied.

Normally, when cutting with a disc-type cold saw or the like, burrs remaining on the steel pipe 2 occur only at the final cutting portion. Therefore, in the steel pipe length measuring device 8a, even if either one of the upper and lower two pipe end detection sensors 21a and 21b detects a burr, the other one can detect a normal steel pipe end. Therefore, if a detection error occurs in the upper and lower two rows of pipe end detection sensors 21a and 21b, the long end detection side can be canceled so that the pipe end position can always be detected accurately. The length accuracy can be improved.

In each of the above embodiments, a steel pipe was taken as an example for description, but in the above device according to the present invention,
Not limited to the steel pipe, other tubular members can be used.

[0062]

According to the first aspect of the invention, in the pipe end face processing apparatus for cutting both end faces of the pipe, the first end face of the pipe is cut by the end face processing machine by the pipe length measuring device. Since it is a pipe end surface processing device characterized by being performed in parallel with the measurement of the length of the pipe, by cutting the end face of the pipe and measuring and calculating the length of the pipe in parallel, The cycle time can be minimized, and the cutting processing capacity is greatly improved.

According to the second aspect of the present invention, the necessary cutting amount of the end face processing machine at the other end face is calculated from the length of the pipe measured by the pipe length measuring device and the target pipe length. Then
Since the pipe end face processing device is provided with a cutting amount support means for sending the cutting amount to another end face processing machine, the length measurement performed simultaneously with the cutting process of the first end face of the pipe -By reflecting the result of the calculation to the cutting of the other end face, the end face of the pipe can be efficiently processed.

According to the invention of claim 3, the indicated value is compared with the actual cutting amount of the end face processing machine at the other end face to confirm that it is the target pipe length. Since the pipe end surface processing device is characterized by having a confirmation means, it is possible to verify the cutting work of the pipe.

According to the fourth aspect of the invention, the pipe support row for conveying the pipe in the pipe radial direction is provided, and the pipe support row having the fixed pedestal for receiving the pipe conveyed by the pipe conveyance means is A plurality of continuous pipe support sections parallel to the longitudinal direction of
A first end face processing machine, which is arranged in an arbitrary pipe support row of the pipe support section and cuts a first end face of the pipe;
It is arranged in the same row as the tube support row where the end face processing machine of is arranged,
A pipe length measuring device for measuring the length of the pipe and a pipe support row in which the first end surface processing machine is arranged are arranged in the same row, and the pipe is pushed into the first end surface processing machine and the first end surface processing machine is installed. The aligning roll for pulling out the pipe from the end face processing machine and the pipe support line in which the first end face processing machine is arranged are arranged in the pipe support line rearward in the traveling direction of the pipe, and the other one of the pipes is arranged. A second end surface processing machine for cutting an end surface and a pipe support row in which the second end surface processing machine is arranged are arranged in the same row, and a pipe is pushed into the second end surface processing machine and the second Since the pipe end face processing device is characterized by being configured with an aligning roll that pulls out the pipe from the end face processing machine, a first end surface processing machine for cutting the end surface of the pipe and a pipe By arranging a pipe length measuring device for measuring the length in the same row of pipe supports, the end face of the pipe is cut and the pipe is measured. · Get done simultaneously, it is possible to make the cycle time and the shortest cutting capacity is remarkably improved.

According to the fifth aspect of the present invention, the pipe support row for conveying the pipe in the pipe radial direction is provided, and the pipe support row having the fixed pedestal for receiving the pipe conveyed by the pipe conveyance means is formed. A plurality of continuous pipe support sections parallel to the longitudinal direction of
A first end face processing machine, which is arranged in an arbitrary pipe support row of the pipe support section and cuts a first end face of the pipe;
It is arranged in the same row as the tube support row where the end face processing machine of is arranged,
A pipe length measuring device for measuring the length of the pipe and a pipe supporting line in which the first end surface processing machine is arranged are arranged in a pipe supporting line in the forward direction of the pipe to prevent movement of the pipe in the longitudinal direction. The first aligning roll to be carried out and the second aligning roll, which is arranged in the tube support row behind the tube support row in which the first end surface processing machine is arranged, and which moves in the longitudinal direction of the tube, are arranged. Lining roll,
A second end surface processing machine which is arranged in a tube support row behind the tube of the tube support row in which the second aligning roll is arranged, and which cuts another end surface of the tube. Since it is a characteristic pipe end surface processing device, the first end surface processing machine for cutting the end surface of the pipe and the pipe length measuring device for measuring the length of the pipe should be arranged in the same row of pipe support. By doing so, it is possible to cut the end surface of the pipe and measure and calculate the length of the pipe at the same time, and the cycle time can be minimized, and the cutting capacity is greatly improved. Further, according to the present invention, it is possible to process an end surface of a pipe having a relatively long length.

According to the sixth aspect of the invention, since the pipe length measuring device is provided with two upper and lower rows of pipe end detection sensors, the pipe end face processing apparatus is provided, and therefore two lines of pipe end detection are provided. By using the sensor, the pipe end position can always be detected accurately, and the accuracy of the length of the pipe to be end-face processed can be improved.

According to the seventh aspect of the present invention, in the method of processing the end faces of a pipe for cutting both end faces of the pipe, the first end face of the pipe is cut by the end face processing machine and Since it is a pipe end surface processing method that is performed in parallel with length measurement, cutting cycle of pipe end surface and pipe length measurement / calculation are performed in parallel to minimize cycle time. It is possible to significantly improve the cutting capacity.

According to the invention of claim 8, the required cutting amount of the other end face by the end face processing machine is calculated from the length of the pipe measured by the pipe length measuring device and the target length of the pipe. Then, since it is a pipe end surface processing method characterized in that the cutting amount is sent to another end surface processing machine as an indicated value, the result of length measurement and calculation performed at the same time as the cutting processing of the first end surface of the pipe Is reflected in the cutting of the other end face, the end face of the pipe can be efficiently processed.

According to the invention of claim 9, it is possible to compare the indicated value with the actual cutting amount of the end face processing machine at the other end face to confirm that it is the target pipe length. Since it is the method for processing the end surface of the pipe, it is possible to verify the cutting work of the pipe.

[Brief description of drawings]

FIG. 1 is an overall plan view of a steel pipe end surface processing apparatus of Example 1 according to an embodiment of the present invention.

FIG. 2 is a flowchart of an end surface processing process performed by the end surface processing apparatus for a steel pipe of Example 1 according to the embodiment of the present invention.

FIG. 3 is a detailed flowchart of a process of length measurement / cutting by the end surface processing device for a steel pipe of Example 1 according to the embodiment of the present invention.

[Fig. 4] Fig. 4 is a diagram showing a process step representing a cycle time by the steel pipe end face machining apparatus of Example 1 according to the embodiment of the present invention, and a time required therefor.

FIG. 5 is an overall plan view of an end surface processing device for a steel pipe of Example 2 according to the embodiment of the present invention.

FIG. 6 is a flowchart of an end surface processing process by the end surface processing apparatus for a steel pipe of Example 2 according to the embodiment of the present invention.

[Fig. 7] Fig. 7 is a diagram showing a process step representing a cycle time by the end face processing apparatus for a steel pipe of Example 2 according to the embodiment of the present invention, and a time required therefor.

FIG. 8 is a front view of another pipe length measuring device according to the embodiment of the present invention.

FIG. 9 is an overall plan view of a conventional steel pipe end surface processing apparatus.

FIG. 10 is a negative line arrow view of a conventional steel pipe end surface processing apparatus.

FIG. 11 is a flowchart of processing of an end surface processing of a steel pipe by a conventional end surface processing device for a steel pipe.

FIG. 12 is a diagram showing processing steps representing cycle time and required time thereof by a conventional steel pipe end surface processing apparatus.

[Explanation of symbols]

1 Steel pipe end face processing machine 2 steel pipe 3 Pitch conveyance direction of steel pipe 4 Loading steel pipe support section 5 pipe clamps 6 Right edge machine 7 horizontal girders 8 Steel pipe length measuring device 8a Steel pipe length measuring device 9 Pipe clamp 10 Left edge processing machine 11 Aligning roll 12 Delivering means 13 Pipe end detection sensor 14 Pipe end detection sensor 15 pitch transport means 16 rotary drive shaft 17 Rotary drive arm 18 pipe pedestal 19 Mobile 20 Lifting movable frame 21 Pipe end detection sensor 21a Upper pipe end detection sensor 21b Lower pipe end detection sensor 22 Steel pipe end face processing machine 30 Steel pipe end face processing machine P1 to P12 Steel pipe transport operation R1 to R6 steel pipe support rows

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Junichiro Murakami             Hiroshima Prefecture Mihara City Itozakicho 5007 Mitsubishi Heavy Industries             Mihara Machinery & Transportation Systems Factory (72) Inventor Norihiko Iwamoto             Sumitomo Metal Works, 1850 Minato, Wakayama, Wakayama Prefecture             Wakayama Steel Works Co., Ltd. F-term (reference) 3C029 BB05                 3C033 BB01 BB05 PP00                 3C045 CA06 CA07 HA05

Claims (9)

[Claims] 1. A pipe end face processing apparatus for cutting both end faces of a pipe, wherein the first end face of the pipe is cut by the end face processing machine while the length of the pipe is measured by a pipe length measuring machine. An end face processing device for a pipe, which is characterized by being performed. 2. The pipe end face processing device according to claim 1, wherein an end face processing machine at another end face is required depending on the length of the pipe measured by the pipe length measuring device and the target pipe length. An end face processing apparatus for a pipe, comprising: a cutting amount instruction means for calculating a cutting amount and sending the cutting amount as an instruction value to another end face processing machine. 3. The pipe end face machining apparatus according to claim 2, wherein the indicated value is compared with the actual cutting amount of the end face machining machine at the other end face, and the target pipe length is determined. A pipe end face processing device comprising a cutting amount confirmation means for confirming. 4. The pipe end surface processing device according to claim 1, further comprising a pipe conveying means for conveying the pipe in a pipe radial direction, and receiving the pipe conveyed by the pipe conveying means. A tube support section having a plurality of continuous tube support rows having a fixed pedestal for stopping, the tube support section being arranged continuously in parallel to the longitudinal direction of the tube, and arranged in an arbitrary tube support row of the tube support section, and the first end face of the tube is arranged. A first end face processing machine for cutting, a pipe length measuring device arranged in the same row as a pipe support row in which the first end face processing machine is arranged, for measuring the length of the pipe, and the first end face An aligning roll which is arranged in the same row as the pipe support row in which the processing machine is arranged and which pushes the tube into the first end surface processing machine and pulls out the tube from the first end surface processing machine; The pipe support row in which the end surface processing machine of A second end surface processing machine that cuts the other end surface, and a pipe support row in which the second end surface processing machine is disposed, and the second end surface processing machine are arranged in the same row. A pipe end face processing device, comprising: an aligning roll for pulling out the pipe from the second end face processing machine. 5. The pipe end surface processing apparatus according to claim 1, further comprising a pipe conveying means for conveying the pipe in a pipe radial direction, and receiving the pipe conveyed by the pipe conveying means. A tube support section having a plurality of continuous tube support rows having a fixed pedestal for stopping, the tube support section being arranged continuously in parallel to the longitudinal direction of the tube, and arranged in an arbitrary tube support row of the tube support section, and the first end face of the tube is arranged. A first end face processing machine for cutting, a pipe length measuring device arranged in the same row as a pipe support row in which the first end face processing machine is arranged, for measuring the length of the pipe, and the first end face A first aligning roll, which is arranged in a pipe support row in the forward direction of the pipe of the pipe support row in which the processing machine is arranged and moves in the longitudinal direction of the pipe, and the first end surface processing machine are arranged. A second pipe arranged in a pipe support line behind the pipe in the traveling direction of the pipe, and moving the pipe in the longitudinal direction. An aligning roll and a second end face processing machine which is arranged in a pipe support row behind the pipe of the pipe support row in which the second aligning roll is arranged and which cuts the other end face of the pipe. An end surface processing device for pipes, which is provided with. 6. The pipe end surface processing apparatus according to claim 1, wherein the pipe length measuring device includes upper and lower two rows of pipe end detection sensors. Processing equipment. 7. A pipe end face machining method for machining both end faces of a pipe, wherein the first end face of the pipe is machined by an end face machining machine in parallel with the measurement of the pipe length by a pipe length measuring machine. A method for processing an end surface of a pipe, which is characterized by being performed. 8. The method of processing an end surface of a pipe according to claim 7, wherein the end surface processing machine for the other end surface is required depending on the length of the pipe measured by the pipe length measuring device and the target pipe length. A method for processing an end surface of a pipe, wherein a cutting amount is calculated and the cutting amount is sent as an instruction value to another end surface processing machine. 9. The pipe end surface processing method according to claim 8, wherein the indicated value is compared with the actual cutting amount of the end surface processing machine at the other end surface, and the target pipe length is obtained. A method for processing an end surface of a pipe, characterized in that