CN220560113U - Steel pipe bulging correction device - Google Patents
Steel pipe bulging correction device Download PDFInfo
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- CN220560113U CN220560113U CN202321792070.6U CN202321792070U CN220560113U CN 220560113 U CN220560113 U CN 220560113U CN 202321792070 U CN202321792070 U CN 202321792070U CN 220560113 U CN220560113 U CN 220560113U
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- hole
- steel pipe
- valve
- dies
- base
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 57
- 239000010959 steel Substances 0.000 title claims abstract description 57
- 241000446313 Lamella Species 0.000 description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Abstract
The utility model belongs to the technical field of pipe processing equipment, and relates to a steel pipe bulging and correcting device, which comprises the following components: the device comprises a base, a first through hole, a guide plate, a second through hole and a plurality of valve molds; the core mold is vertically arranged inside the plurality of clack molds and is of a round platform structure, the lower end of the core mold is positioned in the first through hole, and the inner wall of a cylindrical structure formed by the plurality of clack molds is contacted with the side surface of the core mold; and the telescopic assembly is arranged at the lower part of the base and connected with the lower end of the core mould and is used for driving the core mould to move up and down along the inner parts of the plurality of petal moulds. According to the utility model, through the cooperation arrangement of the guide plate, the plurality of clack dies, the core die and the telescopic component, the bulging action can be carried out on the inner circular hole of the steel pipe to be calibrated when the diameter of the cylindrical structure formed by the plurality of clack dies is increased, so that the steel pipe is rapidly bulging and calibrated, the time required by the calibration is reduced, and the working efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of pipe processing equipment, and relates to a steel pipe bulging and correcting device.
Background
The steel pipes are classified into round, square, rectangular and irregular steel pipes according to the sectional shape, into carbon structural steel pipes, low alloy structural steel pipes, alloy steel pipes and composite steel pipes according to the material, into steel pipes for transportation pipelines, engineering structures, thermal equipment, petrochemical industry, machine manufacturing, geological drilling, high-pressure equipment and the like according to the use, and into seamless steel pipes and welded steel pipes according to the production process, wherein the seamless steel pipes are further classified into two types of hot rolling and cold rolling, and the welded steel pipes are further classified into straight seam welded steel pipes and spiral seam welded steel pipes.
The low-carbon steel welded steel pipe is often used in various industries in terms of higher cost performance, but circular holes in the steel pipe are poor in roundness, and cannot be directly used in certain application occasions with higher requirements, and the steel pipe can be normally used after being shaped.
At present, a mechanical pressurizing device is often adopted to calibrate the inner circular hole of the low-carbon steel welded steel pipe, but the operation is complex, the time consumption is long, and the working efficiency is reduced.
Disclosure of Invention
The utility model aims to provide a steel pipe bulging and shape correcting device, which aims to solve the technical problems that the operation of the traditional mechanical pressurizing device is complex, the time consumption is long and the working efficiency is reduced.
In order to achieve the purpose, the concrete technical scheme of the steel pipe bulging and correcting device is as follows:
a steel pipe bulging and shaping device, comprising:
the base is horizontally arranged and is vertically provided with a first through hole;
the guide plate is horizontally arranged at the upper part of the base and detachably connected with the base, and a second through hole is formed in the guide plate at a position close to the first through hole;
the plurality of valve molds are vertically arranged on the upper part of the guide plate, are close to the position of the second through hole and are arranged around the axis of the second through hole, the lower end of each valve mold is positioned in the second through hole and is connected with the inner wall of the second through hole through a limiting component, each valve mold is of a strip-shaped structure, the cross section of each valve mold is of a fan ring shape, the side edges of the plurality of valve molds are sequentially connected with each other to form a cylindrical structure, and the outer side faces of the valve molds are in clearance fit with the second through hole;
the core mold is vertically arranged inside the plurality of clack molds and is of a round platform structure, the lower end of the core mold is positioned in the first through hole, and the inner wall of a cylindrical structure formed by the plurality of clack molds is contacted with the side surface of the core mold;
and the telescopic assembly is arranged at the lower part of the base and connected with the lower end of the core mould and is used for driving the core mould to move up and down along the inner parts of the plurality of petal moulds.
The utility model is also characterized in that:
the limiting assembly comprises a plurality of limiting blocks, the limiting blocks are respectively arranged on the outer side faces of the plurality of clack dies and are close to the lower ends of the plurality of clack dies, an annular groove is formed in the inner wall of the second through hole and close to the position of the plurality of limiting blocks, the position of the annular groove, which is close to the first through hole, is of an opening structure, the limiting blocks are respectively located in the annular groove, a guide sleeve is vertically arranged in the first through hole, the upper ends of the guide sleeves are in contact with the lower portions of the plurality of limiting blocks, and the lower ends of the core dies are located in the guide sleeve.
The telescopic assembly comprises a connecting rod, the connecting rod is vertically arranged inside the guide sleeve, the upper end of the connecting rod is connected with the lower end of the guide sleeve, and the lower end of the connecting rod penetrates through the lower opening of the first through hole and then is connected with a hydraulic telescopic piece.
The base is connected with the guide plate through a plurality of screws, the plurality of guide pins are uniformly arranged along the edge of the guide plate, and the plurality of screws are positioned between the plurality of guide pins and are respectively close to the plurality of guide pins.
Wherein a plurality of grooves are uniformly formed in one side edge of each petal die along the vertical direction, convex blocks are respectively arranged at positions, opposite to the plurality of grooves, of the other side edge of each petal die, and the plurality of convex blocks on one petal die are respectively positioned in the corresponding grooves on the other adjacent petal die.
Wherein the convex block and the concave groove are mutually matched rectangular.
The included angle between the side surface of the core mold and the vertical direction is 2 degrees.
Eight of which are used.
The steel pipe bulging correction device has the following advantages:
first, through the cooperation setting of deflector, a plurality of lamella mould, mandrel and flexible subassembly, can be when the diameter of the cylinder structure that a plurality of lamella mould are constituteed of increase, carry out the bulging action to the interior round hole of the steel pipe that needs the correction to carry out quick bulging correction to the steel pipe, reduced the time that the correction required, improved the efficiency of work.
And secondly, by arranging a plurality of convex blocks and grooves on each split die, the splicing seam between the two split dies is a rectangular wave fold line, bulging impression can not be generated in the steel pipe, and the quality of the steel pipe is ensured.
Third, this device simple structure, convenient operation is applicable to the steel pipe of different diameters, and the practicality is strong.
Drawings
FIG. 1 is a schematic diagram of a front view of the present utility model;
FIG. 2 is a schematic view of the overall structure of the valve die of the present utility model;
FIG. 3 is a schematic side view of the internal structure of the present utility model;
FIG. 4 is a schematic top view of the present utility model;
reference numerals:
1. a base; 2. a guide plate; 3. a first through hole; 4. a second through hole; 5. an annular groove; 6. a guide sleeve; 7. a core mold; 8. a valve mold; 9. a connecting rod; 10. a screw; 11. a positioning pin; 12. a limiting block; 13. a bump; 14. a groove.
Description of the embodiments
The utility model will be described in detail below with reference to the drawings and the detailed description.
As shown in figures 1-4, the steel tube bulging and shape correcting device comprises a base 1, wherein the base 1 is horizontally arranged, a first through hole 3 is vertically formed in the base 1, a guide plate 2 is horizontally arranged at the upper part of the base 1, the guide plate 2 is detachably connected with the base 1, a second through hole 4 is formed in the position, close to the first through hole 3, of the guide plate 2, a plurality of valve dies 8 are vertically arranged at the position, close to the second through hole 4, of the upper part of the guide plate 2, a plurality of valve dies 8 are arranged around the axis of the second through hole 4, the lower ends of the valve dies 8 are positioned in the second through hole 4 and are connected with the inner wall of the second through hole 4 through a limiting component, the limiting component is used for limiting the upward and downward movement of the valve dies 8 after being stressed, each valve die 8 is of a strip-shaped structure and the cross section is of a fan ring shape, the side edges of the valve dies 8 are sequentially connected with each other to form a cylindrical structure, and the outer side face is in clearance fit with the second through hole 4, the diameter of a cylindrical structure formed by a plurality of clack moulds 8 is convenient to adjust, the diameter of the cylindrical structure formed by the clack moulds 8 is preferably 8, the diameter of a circular structure spliced by the clack moulds 8 when the mutual clearance between the clack moulds 8 is minimum after the assembly is 1-2 mm smaller than that of a round hole in a blank of a steel pipe, thus a blank can be conveniently sleeved on the outer side surface of the clack moulds 8, a mandrel 7 is vertically arranged in the clack moulds 8, the mandrel 7 is in a round platform structure, the included angle between the side surface of the mandrel 7 and the vertical direction is 2 degrees, the lower end of the mandrel 7 is positioned in the first through hole 3, the inner wall of the cylindrical structure formed by the clack moulds 8 contacts with the side surface of the mandrel 7, a telescopic component is arranged at the lower part of the base 1 and is connected with the lower end of the mandrel 7 and used for driving the mandrel 7 to move up and down along the inner parts of the clack moulds 8, thereby the diameter of the cylindrical structure formed by the clack moulds 8 is adjusted, when the diameter of a cylindrical structure formed by a plurality of dies 8 is increased, the inner circular hole of the steel pipe to be corrected is subjected to bulging action, so that the steel pipe is subjected to rapid bulging correction, the time required for correction is reduced, and the working efficiency is improved.
As shown in fig. 2 and 3, the limiting component comprises a plurality of limiting blocks 12, the limiting blocks 12 are respectively arranged on the outer side surfaces of the plurality of valve dies 8 and are close to the lower ends of the plurality of valve dies 8, an annular groove 5 is formed in the position, close to the limiting blocks 12, of the inner wall of the second through hole 4, the position, close to the first through hole 3, of the annular groove 5 is of an opening structure, the limiting blocks 12 are respectively located in the annular groove 5, a guide sleeve 6 is vertically arranged in the first through hole 3, the upper end of the guide sleeve 6 is in contact with the lower parts of the limiting blocks 12, the limiting blocks 12 are limited to move upwards through the annular groove 5, so that the plurality of valve dies 8 are limited to move upwards, the limiting blocks 12 are limited to move downwards through the guide sleeve 6, the plurality of valve dies 8 are limited to move downwards, the lower end of the core die 7 is located in the guide sleeve 6, and the core die 7 can move up and down along the guide sleeve 6.
As shown in fig. 3, the telescopic assembly comprises a connecting rod 9, the connecting rod 9 is vertically arranged inside the guide sleeve 6, the upper end of the connecting rod 9 is connected with the lower end of the guide sleeve 6, and the lower end of the connecting rod 9 penetrates through the lower opening of the first through hole 3 and then is connected with a hydraulic telescopic piece.
As shown in fig. 3 and 4, the base 1 and the guide plate 2 are connected with a plurality of positioning pins 11 through a plurality of screws 10, the plurality of positioning pins 11 are uniformly arranged along the edge of the guide plate 2, a plurality of positioning holes are vertically formed in opposite positions on the base 1 and the guide plate 2 respectively, each positioning pin 11 is inserted into two positioning holes with opposite vertical positions, the plurality of screws 10 are located between the plurality of positioning pins 11 and are respectively close to the plurality of positioning pins 11, a plurality of threaded holes are vertically formed in opposite positions on the base 1 and the guide plate 2 respectively, and each screw 10 is inserted into two threaded holes with opposite vertical positions.
As shown in fig. 1 and 2, a plurality of grooves 14 are uniformly formed in one side edge of each split die 8 along the vertical direction, protruding blocks 13 are respectively arranged at positions, opposite to the plurality of grooves 14, of the other side edge of each split die 8, the plurality of protruding blocks 13 on one split die 8 are respectively positioned in the corresponding grooves 14 on the other adjacent split die 8, the protruding blocks 13 and the grooves 14 are mutually matched rectangles, when the gaps between the 8 split dies 8 are maximum, the diameter of the spliced whole cylindrical structure is 1.0-1.2 mm larger than that of a round hole in a steel pipe blank, so that the blank is expanded to generate elastoplastic deformation, the inner round hole of the steel pipe is reshaped along with the outer side surface of the split die 8 to obtain shape correction, when the split dies 8 shrink and reset, the shrinkage of the steel pipe is generated, namely the elastic deformation part is disappeared, and the inner round hole of the steel pipe reaches the required size of a drawing.
Working principle: in the actual bulging and shape correcting process, the hydraulic telescopic piece is at the lower initial position, the connecting rod 9 and the core mould 7 are at the lower initial position, the 8 valve moulds 8 are in a loose state, because the convex blocks 13 and the concave grooves 14 between the two adjacent valve moulds are also in clearance fit in the axial direction, the clearance is 0.05-0.1 mm, and the radial clearance between the convex blocks 13 and the concave grooves 14 between the two adjacent valve moulds is 1-1.2 mm, so the 8 valve moulds 8 can be pushed towards the center by hand to be smaller than the inner diameter of a steel pipe blank, at the moment, the steel pipe blank is sleeved on the outer side surface of the 8 valve moulds 8, then the external hydraulic telescopic piece is started, the connecting rod 9 and the core mould 7 are pushed to move upwards, because the lower end limiting blocks 12 of the 8 valve moulds 8 are in clearance fit with the annular grooves 5 in the range of 0.03-0.09mm, and are limited and guided by the guide plate 2 in the axial direction, so the outer cone of the mandrel 7 pushes the inner cones of the 8 clacks 8 to move outwards only along the radial direction, the outer sides of the 8 clacks 8 move outwards, namely the bulging action is carried out on the steel pipe, the steel pipe part starts to elastically and plastically deform, when the mandrel 7 moves upwards to a certain distance, the 8 clacks 8 are pushed to move to the outer sides of the 8 clacks 8 to be contacted with the inner wall of the second through hole 4, the 8 clacks 2 form a complete outer cylindrical surface under the limit of the inner wall of the second through hole 4, at this time, the 8 clacks 8 realize the shape correction of the steel pipe part, the pressure is maintained at the position for 2 minutes, the whole bulging and shape correction process is finished, finally the hydraulic telescopic piece moves downwards, the return motion is carried out until the connecting rod 9 and the mandrel 7 are driven to be in the lower initial position, the 8 clacks 8 are in the loose state, and the next circulation operation is waited for. Since the 8 dies 8 are composed of 8 independent identical dies 8, each die 8 is provided with a bump 13 and a groove 14 along the circumferential direction, which are in staggered inlay fit, the splice seam between the two dies 8 is a rectangular wave fold line, so that no bulging impression is generated inside the steel tube.
The steel pipe bulging correction device has the following advantages:
first, through the cooperation setting of deflector, a plurality of lamella mould, mandrel and flexible subassembly, can be when the diameter of the cylinder structure that a plurality of lamella mould are constituteed of increase, carry out the bulging action to the interior round hole of the steel pipe that needs the correction to carry out quick bulging correction to the steel pipe, reduced the time that the correction required, improved the efficiency of work.
And secondly, by arranging a plurality of convex blocks and grooves on each split die, the splicing seam between the two split dies is a rectangular wave fold line, bulging impression can not be generated in the steel pipe, and the quality of the steel pipe is ensured.
Third, this device simple structure, convenient operation is applicable to the steel pipe of different diameters, and the practicality is strong.
It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. A steel pipe bulging correction device, comprising:
the base (1) is horizontally arranged, and a first through hole (3) is vertically formed in the base;
the guide plate (2) is horizontally arranged at the upper part of the base (1) and detachably connected with the base (1), and a second through hole (4) is formed in a position, close to the first through hole (3), on the guide plate;
the plurality of valve dies (8) are vertically arranged on the upper part of the guide plate (2), are close to the position of the second through hole (4) and are arranged around the axis of the second through hole (4), the lower end of each valve die is positioned in the second through hole (4) and is connected with the inner wall of the second through hole (4) through a limiting component, each valve die (8) is of a strip-shaped structure, the cross section of each valve die is of a fan ring shape, the side edges of the plurality of valve dies (8) are sequentially connected with each other to form a cylindrical structure, and the outer side face of each valve die is in clearance fit with the second through hole (4);
the core mold (7) is vertically arranged inside the plurality of clack molds (8) and is of a circular truncated cone structure, the lower end of the core mold is positioned in the first through hole (3), and the inner wall of a cylindrical structure formed by the plurality of clack molds (8) is contacted with the side surface of the core mold (7);
the telescopic assembly is arranged at the lower part of the base (1) and connected with the lower end of the core mould (7) and is used for driving the core mould (7) to move up and down along the inner parts of the plurality of valve moulds (8).
2. The steel pipe bulging correcting device according to claim 1, wherein the limiting assembly comprises a plurality of limiting blocks (12), the limiting blocks (12) are respectively arranged on the outer side faces of the plurality of valve dies (8) and are close to the lower ends of the plurality of valve dies (8), annular grooves (5) are formed in the positions, close to the limiting blocks (12), of the inner walls of the second through holes (4), the annular grooves (5) are of opening structures, the limiting blocks (12) are respectively located in the annular grooves (5), guide sleeves (6) are vertically arranged in the first through holes (3), the upper ends of the guide sleeves (6) are in contact with the lower portions of the limiting blocks (12), and the lower ends of the core dies (7) are located in the guide sleeves (6).
3. The steel pipe bulging correcting device according to claim 2, wherein the telescopic assembly comprises a connecting rod (9), the connecting rod (9) is vertically arranged inside the guide sleeve (6), the upper end of the connecting rod (9) is connected with the lower end of the guide sleeve (6), and the lower end of the connecting rod (9) penetrates through the lower opening of the first through hole (3) and then is connected with a hydraulic telescopic piece.
4. A steel pipe bulging correction device according to claim 1, characterized in that the base (1) and the guide plate (2) are connected with a plurality of positioning pins (11) by a plurality of screws (10), a plurality of positioning pins (11) are uniformly arranged along the edge of the guide plate (2), and a plurality of screws (10) are positioned between the positioning pins (11) and are respectively close to the positioning pins (11).
5. A steel pipe bulging correction device according to claim 1, characterized in that a plurality of grooves (14) are evenly formed in one side edge of each valve mould (8) along the vertical direction, and protruding blocks (13) are respectively arranged at positions, opposite to the plurality of grooves (14), of the other side edge of each valve mould (8), wherein the plurality of protruding blocks (13) on one valve mould (8) are respectively located in the corresponding grooves (14) on the adjacent valve mould (8).
6. A steel pipe bulging correction device according to claim 5, characterized in that said projections (13) and recesses (14) are mutually co-operating rectangular.
7. A steel pipe bulging correction device according to claim 1, characterized in that the side of the mandrel (7) has an angle of 2 ° to the vertical.
8. A steel pipe bulging correction device according to claim 1, characterised in that said petals (8) are eight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321792070.6U CN220560113U (en) | 2023-07-10 | 2023-07-10 | Steel pipe bulging correction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321792070.6U CN220560113U (en) | 2023-07-10 | 2023-07-10 | Steel pipe bulging correction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220560113U true CN220560113U (en) | 2024-03-08 |
Family
ID=90091147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321792070.6U Active CN220560113U (en) | 2023-07-10 | 2023-07-10 | Steel pipe bulging correction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220560113U (en) |
-
2023
- 2023-07-10 CN CN202321792070.6U patent/CN220560113U/en active Active
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