CN213103822U - Cold-drawing forming die for arc-shaped pipe - Google Patents
Cold-drawing forming die for arc-shaped pipe Download PDFInfo
- Publication number
- CN213103822U CN213103822U CN202021860974.4U CN202021860974U CN213103822U CN 213103822 U CN213103822 U CN 213103822U CN 202021860974 U CN202021860974 U CN 202021860974U CN 213103822 U CN213103822 U CN 213103822U
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- 238000010622 cold drawing Methods 0.000 title claims abstract description 27
- 238000004513 sizing Methods 0.000 claims description 14
- 230000007704 transition Effects 0.000 claims description 10
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 5
- 238000003754 machining Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 4
- 238000005482 strain hardening Methods 0.000 abstract description 4
- 239000000047 product Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a cold drawing forming die of arc pipe, it includes the centre form, the one end of centre form links to each other with the pull rod is fixed, the centre form cooperatees with the external mold and uses, external mold fixed mounting is on the die holder. By adopting the mould and assisting the cold drawing process, the special-shaped arc-shaped pipe can be processed and produced, and further, various steel pipes with special shapes or special properties on petroleum underground tools and engineering machinery are solved. The complex machining can be simplified, the structural weight is greatly reduced, steel is saved, and the strength of the finished pipe metal is greatly improved due to work hardening.
Description
Technical Field
The utility model belongs to special-shaped steel pipe processing manufacturing installation field, concretely relates to cold drawing forming die of dysmorphism arc pipe, advanced preparation of concretely relates to metal and non-metallic material, machine-shaping technique.
Background
With the higher and more specific requirements of industries such as engineering machinery, petroleum downhole tools and the like on the quality and special shapes of products, the traditional special-shaped pipe formed by bending welding cannot meet the requirements of the existing products in the aspects of performance, dimensional accuracy and productivity.
In particular, the use conditions of the downhole tool are relatively severe, the terrain conditions are relatively complex, the pipeline used in the downhole is required to have good bending resistance and torsion resistance, and the shape of the pipeline also needs to be capable of adapting to parts with complex shapes.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cold drawing forming die of arc pipe through adopting this mould to assist cold drawing technology again, can process and produce special-shaped arc pipe, and then solves all kinds of special shapes or the steel pipe of special properties on oil instrument and the engineering machine tool in the pit. The complex machining can be simplified, the structural weight is greatly reduced, steel is saved, and the strength of the finished pipe metal is greatly improved due to work hardening.
In order to realize the technical characteristics, the purpose of the utility model is realized as follows: the cold-drawing forming die for the arc-shaped pipe comprises an inner die, wherein one end of the inner die is fixedly connected with a pull rod, the inner die is matched with an outer die for use, and the outer die is fixedly installed on a die holder.
The outer mold is of an axisymmetric structure, the whole appearance structure of the outer mold is a cylinder, and a molding mold cavity is processed in the center of the outer mold; the outer die comprises an outer die sleeve and a core die, a forming die cavity is processed in the center of the core die and is divided into three sections, the first section is a feed inlet and is in a circular section; the third section is a sizing belt, the shape of the sizing belt is circular arc, and the size and the shape of the sizing belt are consistent with those of a final finished product; the second section is a transition zone, and the shape of the transition zone is that a circular section at one end gradually transits to an arc section at the other end.
The die sleeve is made of hardened and tempered common alloy steel, and the core die is made of quenched high-strength alloy steel; the core mold is pressed into the mold sleeve in a heating state to be tightly combined.
The inner die is of an axisymmetric structure and is structurally composed of two parts, wherein one part is an inner die body and used for forming a product, and the other part is a pull rod head and used for connecting a cold-drawing pull rod; the inner die body is composed of three sections, the shape of the inner die body is matched with the inner surface of the outer die, the first section is a feeding section, the shape of the feeding section is a circular section, the third section is a sizing section, the shape of the sizing section is a circular arc shape, the size and the shape of the sizing section are consistent with those of a final product, and the second section is a transition section, the shape of the transition section is that a circular section at one end is gradually transited to an arc section at.
The utility model discloses there is following beneficial effect:
1. the cold-drawing forming die with the structure can be used for cold-drawing forming of special-shaped pipes. Thereby solving the problem of various steel pipes with special shapes or special performances on the petroleum underground tool and the engineering machinery. The complex machining can be simplified, the structural weight is greatly reduced, steel is saved, and the strength of the finished pipe metal is greatly improved due to work hardening.
2. The outer shape forming of the special-shaped pipe can be realized through the outer die.
3. The inner cavity of the special-shaped pipe can be formed through the inner die.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a front view of the outer mold of the present invention.
Fig. 3 is a left cross-sectional view of the outer mold of the present invention.
Fig. 4 is a top sectional view of the external mold of the present invention.
Fig. 5 is a front view of the inner mold of the present invention.
Fig. 6 is a left cross-sectional view of the inner mold of the present invention.
Fig. 7 is a top view of the inner mold of the present invention.
Fig. 8 is a diagram of the forming process of the special-shaped pipe of the present invention.
In the figure: the cold-drawing device comprises a cold-drawing pull rod 1, a raw material blank pipe 2, an inner die 3, an outer die 4, a die holder 5 and a clamp 6.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1 to 8, a cold-drawing forming die for an arc-shaped pipe comprises an inner die 3, wherein one end of the inner die 3 is fixedly connected with a pull rod 1, the inner die 3 is matched with an outer die 4 for use, and the outer die 4 is fixedly installed on a die holder 5. The cold-drawing forming die with the structure can be used for cold-drawing forming of special-shaped pipes. Thereby solving the problem of various steel pipes with special shapes or special performances on the petroleum underground tool and the engineering machinery. The complex machining can be simplified, the structural weight is greatly reduced, steel is saved, and the strength of the finished pipe metal is greatly improved due to work hardening.
Further, the outer mold 4 is of an axisymmetric structure, the overall appearance structure of the outer mold is a cylinder, and a molding mold cavity is machined in the center of the outer mold; the outer die 4 comprises an outer die sleeve 401 and a core die 402, a forming die cavity is processed in the center of the core die 402 and is divided into three sections, wherein the first section is a feed port 403 and is in a circular section; the third section is a sizing band 404 which is in the shape of an arc, and the size and the shape of the sizing band are consistent with those of a final finished product; the second section is a transition zone, and the shape of the transition zone is that a circular section at one end gradually transits to an arc section at the other end. The outer shape of the special pipe can be formed by the outer die 4.
Further, the die sleeve 401 is made of hardened and tempered common alloy steel, and the core die 402 is made of quenched high-strength alloy steel; the core mold 402 is pressed into tight engagement with the mold shell 401 in a heated state. The structural strength of the whole die is enhanced by the material.
Further, the inner mold 3 is of an axisymmetric structure, and the structure of the inner mold is formed by two parts, one part is an inner mold body and used for molding a product, and the other part is a pull rod head 301 and used for connecting the cold-drawing pull rod 1; the inner die body is composed of three sections, the shape of the inner die body is matched with the inner surface of the outer die, the first section is a feeding section 302 which is in a circular section, the third section is a sizing section 304 which is in a circular arc shape, the size and the shape of the sizing section are consistent with those of a finished product, and the second section is a transition section 303 which is in a shape that the circular section at one end is gradually transited to the arc section at the other end. The inner cavity of the special-shaped pipe can be formed by the inner die 3.
Cold drawing flow chart:
1. the raw material blank pipe is a common hot-rolled seamless steel pipe, and the section perimeter of the raw material blank pipe is close to the section perimeter of the final arc-shaped pipe finished product.
2. The blank pipe is placed at the feeding position of a cold-drawing hydraulic unit, the blank pipe is pushed into the blank pipe by a material pushing cylinder of the cold-drawing unit after the inner die is installed, and then the blank pipe penetrates through the outer die and is pushed to the length of a cold-drawing chuck by the material pushing cylinder.
3. And slowly tightening the clamp to ensure that the clamp is completely attached to the chuck to start cold drawing.
4. The shape of the interface of the blank pipe is changed according to the drawing when the blank pipe passes through the die, and the formed interface is arc-shaped finally.
Claims (4)
1. The utility model provides a cold drawing forming die of arc pipe which characterized in that: the novel die comprises an inner die (3), one end of the inner die (3) is fixedly connected with a pull rod (1), the inner die (3) is matched with an outer die (4) for use, and the outer die (4) is fixedly installed on a die holder (5).
2. The cold-drawing forming die for the arc-shaped pipe according to claim 1, wherein: the outer die (4) is of an axisymmetric structure, the whole appearance structure of the outer die is a cylinder, and a forming die cavity is processed in the center of the outer die; the outer die (4) comprises an outer die sleeve (401) and a core die (402), a forming die cavity is machined in the center of the core die (402), the forming die cavity is divided into three sections, the first section is a feed inlet (403), and the first section is in a circular section; the third section is a sizing belt (404) which is in the shape of an arc, and the size and the shape of the sizing belt are consistent with those of a final finished product; the second section is a transition zone, and the shape of the transition zone is that a circular section at one end gradually transits to an arc section at the other end.
3. The cold-drawing forming die for the arc-shaped pipe according to claim 2, wherein: the die sleeve (401) is made of hardened and tempered common alloy steel, and the core die (402) is made of quenched high-strength alloy steel; the core mold (402) is pressed into tight engagement with the mold sleeve (401) in a heated state.
4. The cold-drawing forming die for the arc-shaped pipe according to claim 1, wherein: the inner die (3) is of an axisymmetric structure and is structurally composed of two parts, wherein one part is an inner die body and used for forming a product, and the other part is a pull rod head (301) and used for connecting a cold-drawing pull rod (1); the inner die body is composed of three sections, the shape of the inner die body is matched with the inner surface of the outer die, the first section is a feeding section (302) which is in a circular section, the third section is a sizing section (304) which is in a circular arc shape, the size and the shape of the sizing section are consistent with those of a finished product, and the second section is a transition section (303) which is in a shape that the circular section at one end is gradually transited to the arc section at the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021860974.4U CN213103822U (en) | 2020-08-31 | 2020-08-31 | Cold-drawing forming die for arc-shaped pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021860974.4U CN213103822U (en) | 2020-08-31 | 2020-08-31 | Cold-drawing forming die for arc-shaped pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213103822U true CN213103822U (en) | 2021-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021860974.4U Active CN213103822U (en) | 2020-08-31 | 2020-08-31 | Cold-drawing forming die for arc-shaped pipe |
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| CN (1) | CN213103822U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477734A (en) * | 2021-07-28 | 2021-10-08 | 宜昌中南精密钢管有限公司 | High-precision and high-strength ultrathin stainless steel pipe rectangular pipe forming die and cold drawing method |
-
2020
- 2020-08-31 CN CN202021860974.4U patent/CN213103822U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477734A (en) * | 2021-07-28 | 2021-10-08 | 宜昌中南精密钢管有限公司 | High-precision and high-strength ultrathin stainless steel pipe rectangular pipe forming die and cold drawing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Cold Drawing Mold for Arc Tube Effective date of registration: 20230315 Granted publication date: 20210504 Pledgee: Bank of China Limited by Share Ltd. Three Gorges Branch Pledgor: YICHANG ZHONGNAN PRECISION STEEL PIPE CO.,LTD. Registration number: Y2023980035029 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210504 Pledgee: Bank of China Limited by Share Ltd. Three Gorges Branch Pledgor: YICHANG ZHONGNAN PRECISION STEEL PIPE CO.,LTD. Registration number: Y2023980035029 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Cold Drawing Forming Mold for Curved Tube Granted publication date: 20210504 Pledgee: Bank of China Limited by Share Ltd. Three Gorges Branch Pledgor: YICHANG ZHONGNAN PRECISION STEEL PIPE CO.,LTD. Registration number: Y2024980001664 |