JP2003256015A - Finishing facility line - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide highly efficient continuous operation without stoppage or an intermediate work in process by effectively arranging a pipe cutting machine and a facing machine. <P>SOLUTION: In a finishing facility having a pipe cutting process and a finishing process, pluralities of cutting machines 11a-11d and finishing machines 12a and 12b respectively arranged in parallel are serially arranged in order of work processes. Distributing machines 13a and 13b are provided in each upstream side of the pluralities of pipe cutting machines 11a-11d and finishing machines 12a and 12b. Efficiency of work required for pipe cutting or finishing is improved. Work can be selectively distributed to a cutting machine or finishing machine with a margin, or if a cutting machine or finishing machine fails, it can be distributed to the remaining cutting machines or finishing machines. Stoppage or an intermediate work in process can be extensively suppressed, continuous operation is provided, and work efficiency of a whole of the finishing facility is extensively improved. <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 cutting machine which enables highly efficient and continuous operation by effectively disposing a pipe cutting machine and a face cutting machine (hereinafter referred to as "face cutting"). The present invention relates to a precision equipment line having a process and a face-shaping process.

[0002]

2. Description of the Related Art For example, in the production of steel pipes, from the viewpoint of production efficiency, the number of lines directly connecting the pipe making process and the adjusting process is increasing. However, in such a line directly connecting the pipe making process and the adjusting process. It is indispensable to adjust the balance between pipe making ability and adjusting ability.

That is, if the precision-adjusting ability is inferior to the pipe-making ability, it is necessary to stop the pipe-making process unnecessarily, or the semi-finished products that cannot be processed in time need to be once line-off as intermediate work-in-progress products. This is a problem in manufacturing. In addition, domestic and overseas price reductions have progressed, making it more efficient than ever,
There is an urgent need to reduce costs by increasing the operating rate.

By the way, the equipment arrangement of the cutting machine and the chamfering machine in the conventional steel pipe conditioning equipment is roughly classified into the following three. When arranging one cutting machine 1 having both functions of pipe cutting and chamfering (see FIG. 4), the pipe cutting function and the chamfering function are divided into respective dedicated machines (the pipe cutting machine 2 and the chamfering machine). When 3) is arranged in series (see FIG. 5). When a plurality of cutting machines or special machines are arranged in parallel (see FIGS. 6A and 6B).

[0005]

However, in the equipment arrangement of (1), since a cutting machine having both functions of cutting and chamfering is used, the cost per cutting machine becomes high and the cutting of Since the time required for the setup change to the chamfering is required, the work efficiency is deteriorated and the operation is hindered.

In the case of the equipment arrangement, the time required for setup change from pipe cutting to chamfering is unnecessary, but the work efficiency is limited by the work efficiency of either the pipe cutting machine 2 or the chamfering machine 3. Therefore, when the work efficiency of the pipe cutting machine 2 and that of the chamfering machine 3 are different, there is a limit to the improvement of the work efficiency because the operation hindrance occurs.

Further, in the case of the equipment arrangement of (1), the equipment arrangement of (2) is increased and arranged in parallel. To increase the work efficiency, it is sufficient to increase the number of parallel arrangements, but the cost increases with the increase. There is a limit because it does. The features of these equipment arrangements are summarized in Fig. 7. Note that FIG. 7 also shows the features of the example of the present invention.

That is, in the conventional equipment arrangement, when the balance of the steel pipe making and adjusting equipment is taken into consideration, the work efficiency is lowered, the machine is stopped, and intermediate work-in-process products which cannot be processed in time occur. There was a problem that it would end up.

By the way, the Iron and Steel Handbook (3rd Edition III
(2) Even in the layout example of the conventional steel pipe conditioning equipment (corresponding to FIG. 6 (a)) shown in FIG. 11.98 on page 953 of the strip steel / steel pipe / rolling common equipment, edited by the Japan Iron and Steel Institute, Cutting machines that have the functions of both pipe cutting and chamfering are arranged in parallel. Therefore, with this equipment arrangement, it is not possible to achieve high efficiency in the pipe cutting process and the chamfering process as a whole, and the frequency of setup change from pipe cutting to chamfering increases, leading to a stoppage.
Continuous operation will not be possible.

The present invention has been made in view of the above-mentioned conventional problems, and by efficiently disposing the pipe cutting machine and the chamfering machine, the intermediate work-in-progress product is highly efficient and does not stop. It is an object of the present invention to provide a refinement equipment line capable of continuous operation without generating

[0011]

In order to achieve the above-mentioned object, in the finishing equipment row according to the present invention, a plurality of pipe cutting machines and chamfering machines arranged in parallel are arranged in series in the order of working steps. In addition, a distributor is provided upstream of each of the plurality of pipe cutting machines and the chamfering machine arranged in parallel. By doing so, the stoppage and the generation of intermediate work-in-progress can be significantly suppressed, and the work efficiency of the entire conditioning equipment is significantly improved.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The trimming equipment row according to the present invention is a trimming equipment having a pipe cutting process and a chamfering process, and a plurality of pipe cutting machines and chamfering machines arranged in parallel are arranged in the order of working steps. In addition to being arranged in series, a distributor is provided upstream of each of the plurality of pipe cutting machines and the chamfering machine arranged in parallel.

According to the trimming equipment row of the present invention, the pipe cutting machine or the chamfering machine having a sufficient margin is mainly distributed, or when the pipe cutting machine or the chamfering machine fails, the remaining pipe cutting machine is used. It is possible to significantly reduce the occurrence of stoppages and intermediate work-in-progress, as it can be distributed to the surface-sharpening machines, and continuous operation is possible, greatly improving the work efficiency of the entire conditioning equipment.

By the way, since it is difficult to fully automate the inspection equipment for steel pipes, for example, an operator usually visually inspects for flaws and dimensions. Therefore, the inspection amount is limited by the inspection speed of the operator, and the inspection amount in one line is limited to a fixed amount. Therefore, depending on the processing capacity of the upper process, the processing capacity of the inspection process limits the processing capacity of the entire equipment.

Therefore, when the inspection equipment corresponding to each of the chamfering machines is provided downstream of each of the chamfering machines in the above-described refinement equipment row according to the present invention, when the processing capacity of the upper process is large. It will be possible to deal with it sufficiently.

Further, in the above-mentioned refinement equipment row according to the present invention, the number of installed pipe cutters and chamfers is determined so that the total working time of the pipe cutters and chamfers is substantially equal. , It will be possible to obtain the maximum work efficiency with the minimum capital investment.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is a description of a refining equipment line according to the present invention with reference to FIGS.
A description will be given based on the embodiment shown in FIG. FIG. 1 is a schematic main part explanatory view of a first and second embodiments of a refining equipment train according to the present invention, and FIG. 2 is a schematic main part explanatory view of a third embodiment of a refining equipment train according to the present invention. FIG. 3 is an explanatory diagram of an actual trimming equipment row according to the present invention.

1 to 3, 11a to 11d or 11a and 11b are 4 or 2 units for cutting the front end or the rear end of the manufactured steel pipe or cutting the steel pipe to a predetermined length. It is a tube cutting machine and is arranged in parallel.

These pipe cutting machines 11a to 11d or 11a,
For example, as shown in FIG. 3B, 11b includes one fixed cutting device 21 and two moving cutting devices 2 provided with clamp devices 21a and 22a and cutting heads 21b and 22b, respectively.
2 and, for example, the clamp device 21a of the fixed cutting device 21 attaches the tip of the steel pipe 23 to the moving cutting device 2
The second cutting device 21a clamps the middle portion and the rear end portion of the steel pipe 23, respectively, and cuts the cutting heads 21b, 22 respectively.
It is cut at b. In FIG. 3 (b), 24 is a gauge stopper used for cutting a large number of pieces such as the above-mentioned 3 pieces cutting, 25 is a mill delivery side table, and 26 is a tube cutting machine delivery side table.

12a, 12b or 12a to 12d are pipe cutting machines 11a to 11d or 11a, 11 arranged in parallel.
In the first embodiment shown in FIG. 1 (a) and the third embodiment shown in FIG. 2, the chamfering machine is provided downstream of b. The two chamfering machines 12a and 12b are arranged so that the times are substantially equal to each other.
In the second embodiment shown in (b) and the actual equipment row shown in FIG. 3 (a), the pipe cutting machines 11a to 11d or 11a, 1 are used.
Four or two chamfering machines 12a to 12d or 12a and 12b of the same number as 1b are arranged in parallel.

These chamfering machines 12a, 12b or 12a-
12d is the tube cutting machine 11a to 11d or 11a, 11
For example, the chamfering of the pipe end portion of the steel pipe 23, which is cut at a front end portion or a rear end portion at b, or cut to a predetermined length, is performed as shown in FIG.
As shown in FIG. 4, the tool post 31 to 33 arranged around the pipe end of the steel pipe 23 cut into a predetermined length is rotated. Reference numeral 34 in FIG. 3 (c) pushes out the tool rests 31 to 33 one by one when the tool rests 31 to 33 rotate in order and stop at the specified position during the replacement of the tool rests. The cylinders 35 to 37 for setting the position of are the position detection cylinders of the tool rests 31 to 33.

Reference numerals 13a and 13b denote four or two pipe cutting machines 11a to 11d or 11a and 11b and two or four chamfering machines 12a, 12b or 12a to 12 arranged in parallel.
d is a sorting machine provided upstream of each of the d pipes and cuts the conveyed steel pipe 23 from the pipe cutting machines 11a to 11d or 11a and 11b.
And the chamfering machines 12a, 12b or 12a to 12d.

In the refining equipment row according to the present invention having the above-described structure, the pipe cutting machines 11a to 11a for the steel pipes 23 to be conveyed have a work margin in consideration of the balance of the entire refining equipment.
d or 11a, 11b and chamfering machine 12a, 12b or 12
When the pipe cutting machine 11a or the chamfering machine 12a fails, the remaining pipe cutting machines 11b to 11d are mainly distributed.
It is distributed to d or 11b or the chamfering machine 12b or 12b to 12d.

For example, if the tube cutting machine 11a fails,
While the pipe cutting machine 11a is stopped until it can be repaired, the sorting machine 13a removes all the steel pipes conveyed from the pipe cutting machine 11b.
It is distributed to 11d or 11b and sent. Therefore,
In the rectifying equipment row according to the present invention, the generation of intermediate work-in-process products can be greatly suppressed, continuous operation is possible, and the work efficiency of the entire rectifying equipment is greatly improved.

In addition, in FIG. 2 and FIG. 3A, each chamfering machine 11
Downstream of a and 11b, the respective chamfering machines 11a and 11b
The inspection equipment 14a, 14b corresponding to the above is provided. With such a configuration, the processing capacity of the inspection process, which is limited by the inspection speed of the worker, is improved, so that it is possible to sufficiently cope with the case where the processing capacity of the upper process is large.

By the way, pipe cutting and chamfering are performed by cutting each 300 mm to remove the crops at the front and rear ends of a steel pipe having an outer diameter of 244.5 mm, a thickness of 13.84 mm and a length of 12 m. After that, pipe cutting and chamfering were performed by cutting each 300 mm in order to similarly remove the crops at the front and rear ends of a steel pipe having the same outer diameter and thickness and a length of 10 m.

For each of the steel pipes required for the above work, the working time in the cutting machine is 3 minutes, the working time in the tube cutting machine is 2 minutes, the working time in the chamfering machine is 1 minute, and the pipe cutting setup is changed. (Time required for exchanging blades and movement of moving cutting equipment), time required for setup change for chamfering (blade exchange) is 10 minutes, equipment cost for cutting machine is 20, equipment for pipe cutting machine and chamfering machine When the cost is 10 and the steel pipe is processed, as shown in FIG.
1 (a) and (b) show the number of treatments per hour and the equipment cost in the conventional equipment row, and the number of treatments per hour in the adjustment equipment row according to the present invention shown in FIGS. Table 1 below shows the comparison with equipment costs.

[0028]

[Table 1]

As is clear from Table 1, in the case of the same equipment cost, the invention example 2 shown in FIG. 1B and the conventional examples 1 and 2 shown in FIG. Example 2 has a larger number of processes per hour. In addition, when the number of processes per hour is the same, the invention example 1 shown in FIG.
As is clear from comparison between the conventional example 2 shown in (b),
Inventive Example 1 requires less equipment cost.

As for the number of influences of the chamfering setup change in the conventional example 2 in Table 1, since the normal work is rate-controlled by the work efficiency of the pipe cutting machine, the amount which can be processed by 10 minutes × 4 machines is Since it is 20 in the tube cutting machine, 20
In the example 2 of the invention, since the number of the chamfering machines having the work efficiency twice that of the tube cutting machine is installed, there is a margin in the number of treatments, and the effect of the chamfering setup change is 10 minutes. Since there was no effect in the stopping time of × 4 machines, it was set to 0.

[0031]

As described above, according to the present invention,
Since multiple pipe cutting machines and chamfering machines were made independent, and a sorting machine was installed upstream of each pipe cutting machine and chamfering machine, like a cutting machine with both pipe cutting and chamfering functions. Since the setup change from pipe cutting to chamfering is not necessary, the work efficiency required for pipe cutting and chamfering is improved, and the pipe cutting machine and chamfering machine can be assigned with priority and pipe cutting machine If the machine or the chamfer breaks down, it can be distributed to the remaining pipe cutters and chamfers, and the occurrence of stoppages and intermediate work-in-progress can be greatly suppressed, enabling continuous operation, and the entire finishing facility. As a result, work efficiency is greatly improved.

Further, in the trimming equipment line according to the present invention,
When the inspection equipment corresponding to each chamfering machine is provided downstream of each chamfering machine, the throughput of the inspection process, which is limited by the inspection speed of the worker, is improved, and the throughput of the upper process is large. You will be able to deal with the situation sufficiently.

Further, in the trimming equipment row according to the present invention,
In order to make the total working time of the pipe cutting machine and the chamfering machine almost equal,
By determining the number of pipe cutters and chamfers to be installed, it becomes possible to obtain the maximum work efficiency with the minimum capital investment.

[Brief description of drawings]

FIG. 1 (a) is a schematic main part explanatory view of a first embodiment of a conditioning equipment row according to the present invention, and FIG. 1 (b) is a schematic main part explanatory view of the same second embodiment.

FIG. 2 is a schematic explanatory view of a main part of a third embodiment of a conditioning equipment row according to the present invention.

FIG. 3 is an explanatory diagram of an actual train of conditioning equipment according to the present invention,
(A) is a layout drawing, (b) is an explanatory view showing an example of a pipe cutting machine, and (c) is an explanatory view showing an example of a chamfering machine.

FIG. 4 is a view showing a conditioning equipment row including a cutting machine having a tube cutting and chamfering function in a conventional steel tube conditioning equipment.

FIG. 5 is a view showing a conditioning equipment row including a pipe cutting machine and a chamfering machine in a conventional steel pipe conditioning equipment.

6A is a diagram showing a trimming equipment row in which the cutting machines of FIG. 4 are arranged in parallel, and FIG. 6B is a diagram showing a trimming equipment row in which the pipe cutting machine and the chamfering machine of FIG. 5 are arranged in parallel. Is.

FIG. 7 is a table in which the characteristics of the conventional conditioning equipment row and the conditioning equipment row of the present invention are summarized.

[Explanation of symbols]

11a-11d tube cutting machine 12a-12d Chamfering machine 13a, 13b sorting machine 14a, 14b Inspection equipment

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Norihiko Iwamoto             Sumitomo Metal Works, 1850 Minato, Wakayama, Wakayama Prefecture             Wakayama Steel Works Co., Ltd. (72) Inventor Yuzuru Kadono             4-6-22 Kannon Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Prefecture               Inside Mitsubishi Heavy Industries Hiroshima Works (72) Inventor Junichiro Murakami             Hiroshima Prefecture Mihara City Itozakicho 5007 Mitsubishi Heavy Industries             Mihara Machinery Transportation System Co., Ltd.             Inside the factory F-term (reference) 3C100 AA22 BB02 BB05 BB13 BB14                       EE10

Claims (3)

[Claims] 1. A refining facility having a tube cutting step and a surface cutting step, wherein a plurality of pipe cutting machines and a surface cutting machine, each of which is arranged in parallel, are arranged in series in the order of working steps, and the plurality of pieces are arranged in parallel. A line of refinement equipment characterized by having a sorting machine installed upstream of each of the base pipe cutting machine and the chamfer cutting machine. 2. The adjusting equipment row according to claim 1, wherein inspection equipment corresponding to each of the surface cutting machines is provided downstream of each of the surface cutting machines. 3. The refinement according to claim 1, wherein the number of pipe cutting machines and the number of chamfer cutting machines installed are determined so that the total working time of the pipe cutting machines and the chamfer cutting machine are substantially equal to each other. Alignment equipment line.