CN112756692B - Cold sawing process for section steel - Google Patents
Cold sawing process for section steel Download PDFInfo
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- CN112756692B CN112756692B CN202011567186.0A CN202011567186A CN112756692B CN 112756692 B CN112756692 B CN 112756692B CN 202011567186 A CN202011567186 A CN 202011567186A CN 112756692 B CN112756692 B CN 112756692B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D45/00—Sawing machines or sawing devices with circular saw blades or with friction saw discs
- B23D45/10—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a plurality of circular saw blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
- B23D47/04—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of devices for feeding, positioning, clamping, or rotating work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
- B23D47/08—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of devices for bringing the circular saw blade to the workpiece or removing same therefrom
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Abstract
The invention provides a section steel cold sawing process, wherein equipment in a sawing area is subjected to N +1 type arrangement: setting a first sawing area and a second sawing area, wherein the first sawing area comprises N cold saws and a sizing baffle, and the second sawing area comprises a cold saw and a sizing baffle; the section steel is conveyed by a conveying mechanism and is firstly sawed in a first sawing area, and the number of the fixed length materials sawed in the first sawing area is multiple of N; and when the number of the residual sized materials to be sawed is less than N, entering a second sawing area for sawing. Compared with the prior art, the cold sawing process for the section steel has the following advantages: the working efficiency of the table saw and the utilization rate of the cold saw are improved, the sawing frequency is reduced, and the production capacity of the cold saw is also improved.
Description
Technical Field
The invention relates to the field of cold saw cutting of section steel, in particular to a cold saw cutting process of section steel.
Background
The traditional section steel cold sawing process only adopts a sawing area, and a movable cold saw, a fixed cold saw and a sizing baffle are arranged in the sawing area, so that section steel with different sizing lengths is sawn out, but the utilization rate of the cold saw is lower.
Disclosure of Invention
Aiming at the existing problems, the invention provides a section steel cold sawing process, which can improve the utilization rate of a cold saw and the working efficiency of the whole production line.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a shaped steel cold saw cuts technology, the equipment that saw cuts the region carries out the N +1 type and arranges: setting a first sawing area and a second sawing area, wherein the first sawing area comprises N cold saws and a sizing baffle, and the second sawing area comprises a cold saw and a sizing baffle;
the section steel is conveyed by a conveying mechanism and is firstly sawed in a first sawing area, and the number of the fixed length materials sawed in the first sawing area is multiple of N; and when the number of the residual sized materials to be sawed is less than N, entering a second sawing area for sawing.
Further, the cold saws in the first sawing area comprise a fixed cold saw and N-1 movable cold saws, and the cold saws in the second sawing area are fixed cold saws.
Further, the sizing baffles in the first sawing area and the second sawing area are movable sizing baffles.
Further, the conveying mechanism is a roller way.
Further, when N is 3, the method comprises the following steps:
step A, arrangement of equipment in a sawing area: sequentially arranging a first cold saw, a second cold saw, a third cold saw, a first sizing baffle, a fourth cold saw and a second sizing baffle from right to left, and arranging the first cold saw, the second cold saw, the third cold saw, the first sizing baffle, the fourth cold saw and the second sizing baffle above the conveying mechanism; the first cold saw, the second cold saw, the third cold saw and the first sizing baffle are first sawing areas, and the fourth cold saw and the second sizing baffle are second sawing areas;
b, conveying the section steel through a conveying mechanism, and when the stub bar of the section steel reaches the front end of a third cold saw, simultaneously sawing through the first cold saw, the second cold saw and the third cold saw, cutting off the stub bar through the third cold saw, and respectively cutting out a fixed-size material through the first cold saw and the second cold saw;
c, conveying the sawed section steel forwards by a conveying mechanism, when the front ends of the residual materials reach a first sizing baffle, enabling the first sizing baffle to work to block the uncut section steel and align the front ends of the section steel, and simultaneously sawing by a first cold saw, a second cold saw and a third cold saw to cut out 3 sizing materials;
and D, if the number of the residual sizing materials to be sawn is 3, repeating the step C, if the number of the residual sizing materials to be sawn is less than 3, conveying the residual section steel to a second sawing area by a conveying mechanism for sawing, namely when the front end of the residual material reaches a second sizing baffle plate, the second sizing baffle plate works to block the section steel which is not sawn and align the front end of the section steel, and sawing by a fourth cold saw.
Furthermore, the first cold saw and the second cold saw are movable cold saws, and the third cold saw is a fixed cold saw.
Further, in step D, if there are 2 remaining cut lengths to be sawed, the fourth cold saw in the second sawing zone performs 2 sawing.
Compared with the prior art, the cold sawing process for the section steel has the following advantages: the working efficiency of the table saw and the utilization rate of the cold saw are improved, the sawing frequency is reduced, and the production capacity of the cold saw is also improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of an embodiment of the present invention (incoming material direction is from right to left);
FIG. 2 is a schematic structural view of a comparative example (incoming material direction is from right to left);
description of reference numerals:
1-a first cold saw; 2-a second cold saw; 3-a third cold saw; 4-fourth cold saw; 5-a first gauge baffle; 6-a second sizing baffle; 7-a first mobile cold saw; 8-a second mobile cold saw; 9-third moving cold saw; 10-a fourth fixed cold saw; 11-moving the sizing baffle.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Examples
As shown in fig. 1, a cold sawing process for section steel adopts an N +1 arrangement process, and when N is 3, that is, 3 cold saws are provided in a first sawing area. Sequentially arranging a first cold saw 1, a second cold saw 2, a third cold saw 3, a first fixed-size baffle 5, a fourth cold saw 4 and a second fixed-size baffle 6 from right to left, and arranging the first cold saw, the second cold saw, the third cold saw, the fourth cold saw and the second fixed-size baffle above a roller way; the first cold saw 1, the second cold saw 2, the third cold saw 3 and the first fixed size baffle 5 are first sawing areas, and the fourth cold saw 4 and the second fixed size baffle 6 are second sawing areas; the first cold saw 1 and the second cold saw 2 are movable cold saws, and the third cold saw 3 is a fixed cold saw. The sizing baffles in the first sawing zone and the second sawing zone are movable sizing baffles.
The distance between the first fixed size baffle 5 and the third cold saw 3 can be adjusted through the movement of the first fixed size baffle 5; the distances among the first cold saw 1, the second cold saw 2 and the third cold saw 3 can be adjusted through the movement of the first cold saw 1 and the second cold saw 2, so that the section steel with different length sizes can be sawn out. Meanwhile, the distance between the second sizing fence 6 and the fourth cold saw 4 can be adjusted by the movement of the second sizing fence 6.
The sawing process comprises the following steps: (taking 10 times of sizing material as an example)
Sawing for the first time: when the stub bar of supplied materials reaches the front end of the third cold saw 3, the first cold saw 1, the second cold saw 2 and the third cold saw 3 saw together, wherein the stub bar is cut off by the third cold saw 3, and a sizing material is cut off by the first cold saw 1 and the second cold saw 2 respectively. That is, 2 sized materials are cut out by 3 cold saws working simultaneously for the first time, and 8 sized materials are not cut.
Sawing for the second time: the structural steel after sawing is conveyed forwards by the roller way, when the front end of the residual material reaches the fixed first size baffle 5, the first size baffle 5 works to block the structural steel which is not sawn and align the front end of the structural steel, and the first cold saw 1, the second cold saw 2 and the third cold saw 3 saw simultaneously to cut out 3 fixed sizes. There were 5 footings remaining.
Sawing for the third time: the structural steel after sawing is conveyed forwards by the roller way, when the front end of the residual material reaches the first sizing baffle 5, the first sizing baffle 5 works to block the structural steel which is not sawed and align the front end of the structural steel, and the first cold saw 1, the second cold saw 2 and the third cold saw 3 saw simultaneously to cut out 3 sizing materials. There were 2 footings remaining.
The two residual fixed-length materials after the third sawing are not sawed at the first cold saw 1, the second cold saw 2 and the third cold saw 3 and are conveyed to the fourth cold saw 4 by a roller way for sawing, and the sawing process is that one fixed-length material is sawed at each time and can be sawed for 2 times. If the material tail is too long, a cold saw can be added in the second sawing area.
Therefore, the first cold saw 1, the second cold saw 2 and the third cold saw 3 work for 3 times, the fourth cold saw 4 works for 2-3 times to complete the sawing of a group of materials, and the working time periods of the first cold saw 1, the second cold saw 2 and the third cold saw 3 and the fourth cold saw 4 are overlapped during continuous working, so that the working of the fourth cold saw 4 can be not considered during calculation. The sawing process is as follows:
the working efficiency of the 4-bench saw is 15/16.8%, and the utilization rate of the cold saw is improved by 25%. Meanwhile, the sawing frequency is reduced from 4 to 3, and the cold sawing production capacity is improved by 25%.
Comparative example:
as shown in fig. 2, the distance between the movable sizing fence 11 and the fourth fixed cold saw 10 can be adjusted by the movement of the movable sizing fence 11; the distances among the first movable cold saw 7, the second movable cold saw 8, the third movable cold saw 9 and the fourth fixed cold saw 10 can be adjusted through the movement of the first movable cold saw 7, the second movable cold saw 8 and the third movable cold saw 9, so that section steel with different fixed lengths can be sawn out.
Taking a 10-time material as an example, the sawing process is as follows:
sawing for the first time: when the stub bar of the incoming material reaches the front end of the fourth fixed cold saw 10, the first movable cold saw 7, the second movable cold saw 8, the third movable cold saw 9 and the fourth fixed cold saw 10 saw together, wherein the stub bar is cut off by the third movable cold saw 9, and a fixed-size material is cut off by the first movable cold saw 7, the second movable cold saw 8 and the third movable cold saw 9 respectively. I.e. the first 4 saws are working simultaneously, three cut lengths are cut out by the saw, and 7 cut lengths are left uncut.
And (5) sawing for the second time: the sawed section steel is conveyed forwards by a roller way, when the front ends of the surplus materials reach the movable sizing baffle 11, the movable sizing baffle 11 works to block the section steel which is not sawed and align the front ends of the section steel, and the first movable cold saw 7, the second movable cold saw 8, the third movable cold saw 9 and the fourth fixed cold saw 10 saw simultaneously to cut out 4 sizing materials. 3 sizing materials are remained.
And (3) sawing for the third time: the sawed section steel is conveyed forwards by a roller way, when the front end of the residual material reaches the movable sizing baffle 11, the movable sizing baffle 11 works to block the uncut section steel and align the front end of the uncut section steel, the third movable cold saw 9 and the fourth fixed cold saw 10 saw simultaneously (the first movable cold saw 7 and the second movable cold saw 8 run empty), and 2 pieces of sizing material are cut. There were also 1 cut to length remaining.
The third sawing is not the second movable cold saw 8, the third movable cold saw 9 and the fourth fixed cold saw 10 which saw off the remaining 3 fixed-length materials at the same time, because the first movable cold saw 7, the second movable cold saw 8 and the third movable cold saw 9 are movable saws, the positions of the movable saws are not fixed, and a material tail blanking and collecting device cannot be designed, the tail cutting must be finished at the fourth fixed cold saw 10, namely, the last sawing can only cut one fixed length.
Fourth sawing: the sawed section steel is conveyed forwards by a roller way, when the front end of the residual material reaches the movable sizing baffle 11, the movable sizing baffle 11 works to block the uncut section steel and align the front end of the uncut section steel, the fourth fixed cold saw 10 performs sawing (the first movable cold saw 7, the second movable cold saw 8 and the third movable cold saw 9 run empty), and the last 1 sizing is cut. The sawing process is as follows:
the 4-table saw had a work efficiency of 11/16-68.8%.
And (4) conclusion: in contrast to the examples, the 4-table saw of the comparative example was less efficient than the examples and the cold saw utilization was low.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A section steel cold sawing process is characterized in that: the equipment of the sawing zone performs an N +1 type arrangement: setting a first sawing area and a second sawing area, wherein the first sawing area comprises N cold saws and a sizing baffle, and the second sawing area comprises a cold saw and a sizing baffle;
the section steel is conveyed by a conveying mechanism and is firstly sawed in a first sawing area, and the number of the fixed length materials sawed in the first sawing area is multiple of N; and when the number of the residual sized materials to be sawed is less than N, entering a second sawing area for sawing.
2. The cold sawing process of section steel according to claim 1, characterized in that: the cold saws in the first sawing area comprise a fixed cold saw and N-1 movable cold saws, and the cold saws in the second sawing area are fixed cold saws.
3. The cold sawing process of section steel according to claim 1, characterized in that: the fixed-length baffle plates in the first sawing area and the second sawing area are movable fixed-length baffle plates.
4. The cold sawing process of section steel according to claim 1, characterized in that: the conveying mechanism is a roller way.
5. The cold sawing process of section steel according to claim 1, characterized in that: when N is 3, the method comprises the following steps:
step A, arrangement of equipment in a sawing area: sequentially arranging a first cold saw (1), a second cold saw (2), a third cold saw (3), a first sizing baffle (5), a fourth cold saw (4) and a second sizing baffle (6) from right to left, and arranging the first cold saw, the second cold saw, the third cold saw, the fourth cold saw and the second sizing baffle above a conveying mechanism; the first cold saw (1), the second cold saw (2), the third cold saw (3) and the first sizing baffle (5) are first sawing areas, and the fourth cold saw (4) and the second sizing baffle (6) are second sawing areas;
b, the section steel is conveyed through a conveying mechanism, when the stub bar of the section steel reaches the front end of a third cold saw (3), the first cold saw (1), the second cold saw (2) and the third cold saw (3) saw simultaneously, the stub bar is cut off by the third cold saw (3), and a fixed-size material is cut off by the first cold saw (1) and the second cold saw (2) respectively;
c, conveying the sawed section steel forwards by a conveying mechanism, when the front ends of the residual materials reach a first sizing baffle (5), enabling the first sizing baffle (5) to work to block the uncut section steel and align the front ends of the section steel, and simultaneously sawing by a first cold saw (1), a second cold saw (2) and a third cold saw (3) to cut out 3 sizing materials;
and D, if the number of the residual sizing materials to be sawn is 3, repeating the step C, if the number of the residual sizing materials to be sawn is less than 3, conveying the residual section steel to a second sawing area by a conveying mechanism for sawing, namely when the front end of the residual material reaches a second sizing baffle (6), enabling the second sizing baffle (6) to work, blocking the uncut section steel, aligning the front end of the section steel, and sawing by a fourth cold saw (4).
6. The cold sawing process of section steel according to claim 5, wherein: the first cold saw (1) and the second cold saw (2) are movable cold saws, and the third cold saw (3) is a fixed cold saw.
7. The cold sawing process of section steel according to claim 5, wherein: and D, if the number of the residual fixed size materials to be sawed is 2, performing 2 times of sawing by a fourth cold saw (4) in the second sawing area.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011567186.0A CN112756692B (en) | 2020-12-25 | 2020-12-25 | Cold sawing process for section steel |
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| CN202011567186.0A CN112756692B (en) | 2020-12-25 | 2020-12-25 | Cold sawing process for section steel |
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| CN112756692B true CN112756692B (en) | 2022-06-24 |
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| CN113238529B (en) * | 2021-05-17 | 2022-09-13 | 莱芜钢铁集团电子有限公司 | Bar sawing combined model |
| CN114273441A (en) * | 2021-12-02 | 2022-04-05 | 攀枝花钢城集团有限公司 | Steel conveying method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4017976A (en) * | 1974-07-03 | 1977-04-19 | Barr Anthony J | Apparatus and method for maximum utilization of elongated stock |
| CN1083740C (en) * | 1998-10-30 | 2002-05-01 | 马鞍山钢铁股份有限公司 | Optimized sizing saw-cutting method for sections |
| CN101856749B (en) * | 2010-06-21 | 2011-12-07 | 天津市天铁轧二制钢有限公司 | Fixed-length segmenting and sawing production line |
| CN102764911A (en) * | 2012-07-19 | 2012-11-07 | 莱芜钢铁集团有限公司 | Sizing and sawing system |
| CN104096904B (en) * | 2014-07-09 | 2017-02-15 | 北京佰能电气技术有限公司 | Automatic sizing and cold shearing method and automatic sizing and cold shearing device |
| CN109663809A (en) * | 2018-12-18 | 2019-04-23 | 天津市中重科技工程有限公司 | Large-scale and ultra-large H-beam rolling mill practice |
| CN110315382A (en) * | 2019-07-31 | 2019-10-11 | 中冶华天工程技术有限公司 | A kind of movable roller way cooperating running saw sawing steel sheet pile (H profile steel) |
| CN110773796A (en) * | 2019-10-25 | 2020-02-11 | 建科机械（天津）股份有限公司 | Automatic sawing machine |
| CN111421179B (en) * | 2020-03-30 | 2021-04-09 | 马鞍山钢铁股份有限公司 | Rod cold shearing fixed-length shearing control system |
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