CN202984317U - Seamless steel pipe integral forming die - Google Patents
Seamless steel pipe integral forming die Download PDFInfo
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- CN202984317U CN202984317U CN 201220721795 CN201220721795U CN202984317U CN 202984317 U CN202984317 U CN 202984317U CN 201220721795 CN201220721795 CN 201220721795 CN 201220721795 U CN201220721795 U CN 201220721795U CN 202984317 U CN202984317 U CN 202984317U
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- baffle plate
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Abstract
The utility model discloses a seamless steel pipe integral forming die. The seamless steel pipe integral forming die comprises a cold-drawing mechanism and a pipe end forming mechanism, wherein the cold-drawing mechanism comprises a cold drawing external die and a cold drawing internal die, the cold drawing external die is provided with a drawhole, and the cold drawing internal die is divided into a guide section, a cone wall reducing section and a column equal wall section; the pipe end forming mechanism comprises a pipe end formation external die, a baffle plate and a die core, the pipe end formation external die is provided with a step through hole, the baffle plate is in interference fit with the step through hole and the baffle plate is placed on a step of a large diameter end in a propping manner; a die core is in interference fit with the pipe end formation external die and the mould core is placed on the other end surface of the baffle plate, opposite to the large diameter end step, the center of the die core is provided with a die core through hole, the center of the baffle plate is provided with a baffle plate through hole, the step through hole and the die core through hole as well as the baffle plate through hole are coaxially formed; and the pipe end formation external die is fixedly joined with the cold drawing external die. The seamless steel pipe integral forming die provided by the utility model has the advantages that the drawing passes of a steel pipe main body is reduced, the tail end of a steel pipe is subjected to primary punch forming, the production cycle is shortened, the production effect is improved, the energy is saved, the emission is reduced, the production cost is reduced, and the labor intensity of operation workers is lightened.
Description
Technical field
The utility model relates to a kind of mould, and more particularly, it relates to a kind of seamless steel pipe monolithic molding mould.
Background technology
Seamless steel pipe be a kind ofly have hollow section, periphery does not have jointed circle, and is square, the rectangle steel are to make hollow billet with steel ingot or the solid pipe hole that wears long, and then make through hot rolling, cold rolling or cold group.Seamless steel pipe is in a large number as the pipeline of carrying fluid, steel pipe is compared with solid steel such as round steel, when the bending resistance torsional strength is identical, weight is lighter, a kind of Economic Section steel, be widely used in manufacturing structure spare and machine components, as steel scaffold of using in oil drill rocker, truck drive shaft, bicycle rack and construction etc.
The cold drawing die that adopts in tradition cold-drawing seamless tube technique is included as an inner die for cold-drawn process and a cold-drawn external mold, form the processing that the distortion section is used for steel pipe is subtracted wall, tube reducing between inner die for cold-drawn process outer wall and cold-drawn external mold inwall, in the Tube Drawing process, inner die for cold-drawn process need to fix the operating position by a stretching bar, and it is remained in the distortion section.The employing stretching bar fixedly shortcoming of the drawing processing mode of inner die for cold-drawn process is: during drawing, single pass flow of metal percentage elongation is little, the draw passage is many, the production cycle is long; And the drawing process steel pipe easily ruptures, and the operator joins the fixed internal formwork difficulty, the length that expends time in, thereby causes that production effect is low, cost is high.
If need to be socketed some other parts on seamless steel pipe, just need to process seamless steel pipe, process step on seamless steel pipe, be used for axial limiting.At present, after processing one section seamless steel pipe pipeline section with constant slope on seamless steel pipe, also need to adopt the pipe end forming die tool to carry out twice punching press, just can process last finished product.Such pipe end forming die tool is integrated moulding, and each processing capacity is less, carries out twice punching press and expends time in manyly, and working (machining) efficiency is low, if damage, just need to change, and processing cost is larger.
The utility model content
For the deficiency that prior art exists, the purpose of this utility model be to provide a kind of with reach the drawing passes, the steel pipe end that reduce the steel pipe main body one time punching molded, shorten the production cycle, improve production effect, seamless steel pipe monolithic molding mould that energy-saving and emission-reduction reduced production costs, alleviated operator's labour intensity.
For achieving the above object, the utility model provides following technical scheme: a kind of seamless steel pipe monolithic molding mould, comprise cold-drawn mechanism and tube-end forming mechanism, described cold-drawn mechanism comprises cold-drawn external mold and inner die for cold-drawn process, described cold-drawn external mold is provided with draw hole, and described inner die for cold-drawn process is divided into the equal wall section of guide section, circular cone wall-reducting section and cylinder successively along the steel pipe drawing direction; Described tube-end forming mechanism comprises tube-end forming external mold, baffle plate and core rod, the tube-end forming external mold is provided with the cylindrical step through hole, baffle plate and cylindrical step through hole interference fit, and baffle plate is conflicted and is placed in the step place of larger diameter end, core rod and tube-end forming external mold interference fit, and core rod is placed in the other end at the relative larger diameter end step of baffle plate place, the core rod center is provided with the core rod through hole that passes for steel pipe, the baffle plate center is provided with the baffle plate through hole that passes for steel pipe, described cylindrical step through hole and core rod through hole, the coaxial setting of baffle plate through hole; Described tube-end forming external mold fixedly is connected with the cold-drawn external mold.
By adopting technique scheme, the structure of cold-drawn mechanism is arranged so that when steel pipe drawing, the inner die for cold-drawn process rear end can draw secondary bar to rigidly fix, the reaction force of inner die for cold-drawn process by with the frictional force of steel pipe and pipe deformation the time reaches a poised state, stably remain on the distortion section, the stretching bar only plays and promotes inner die for cold-drawn process to the effect in soil work zone, and the bar that therefore stretches is stressed little, be difficult for breaking, be conducive to save material cost; With original integrated steel pipe end mould, adopt drift, baffle plate and core rod two parts to form, wherein adopt the Hardmetal materials core rod to process seamless steel pipe, core rod is not fragile, because core rod hardness is high, processing capacity is many, and a punching press just can make the seamless steel pipe moulding, so working (machining) efficiency is high, expend time in few, simultaneously, if damage, only need with the die change core, so processing cost is lower.
The utility model further is set to: described circular cone wall-reducting section is divided into the first wall-reducting section and the second wall-reducting section, and the first wall-reducting section is connected with guide section, and the second wall-reducting section is connected with the equal wall section of cylinder; The axial tapering of described the second wall-reducting section is less than the axial tapering of the first wall-reducting section.
By adopting technique scheme, make the setting of cold-drawn mechanism more specifically, in process of tube plug drawing mill, the wall tube reducing that subtracts of steel pipe was divided into for two steps and carries out, the first wall-reducting section plays and once subtracts the wall effect, the second wall-reducting section plays secondary and subtracts the wall effect, compares existing inner die for cold-drawn process, and the tube reducing wall-reducting section of steel pipe increases, impulsive force when reducing inner die for cold-drawn process and nipping, avoid steel pipe once to be out of shape excessive and fracture that cause, improve the stability of steel pipe drawing, and also reduced to a certain extent the wearing and tearing of inner die for cold-drawn process.
The utility model further is set to: the degree of depth of the larger diameter end of described cylindrical step through hole equals the thickness sum of baffle plate and core rod.
By adopting technique scheme, make the structure of tube-end forming mechanism specialize, the degree of depth of the larger diameter end of cylindrical step through hole equals the thickness sum of baffle plate and core rod, can reduce even to eliminate the die parting line that between baffle plate and core rod, steel pipe is caused, make tube-end forming mechanism that rationalization is set.
Description of drawings
Fig. 1 is the structural representation of the utility model seamless steel pipe monolithic molding mould embodiment.
The specific embodiment
With reference to Fig. 1, the utility model seamless steel pipe monolithic molding mould embodiment is described further.
a kind of seamless steel pipe 3 monolithic molding moulds, comprise cold-drawn mechanism 1 and tube-end forming mechanism 2, described cold-drawn mechanism 1 comprises cold-drawn external mold 11 and inner die for cold-drawn process 12, described cold-drawn external mold 11 is provided with draw hole 111, and described inner die for cold-drawn process 12 is divided into the equal wall section 123 of guide section 121, circular cone wall-reducting section 122 and cylinder successively along steel pipe 3 drawing directions, described tube-end forming mechanism 2 comprises tube-end forming external mold 21, baffle plate 22 and core rod 23, tube-end forming external mold 21 is provided with cylindrical step through hole 211, baffle plate 22 and cylindrical step through hole 211 interference fit, and baffle plate 22 is conflicted and is placed in the step place of larger diameter end, core rod 23 and tube-end forming external mold 21 interference fit, and core rod 23 is placed in the other end at baffle plate 22 relative larger diameter end step places, core rod 23 centers are provided with the core rod through hole 231 that passes for steel pipe 3, baffle plate 22 centers are provided with the baffle plate through hole 221 that passes for steel pipe 3, described cylindrical step through hole 211 and core rod through hole 231, the coaxial setting of baffle plate through hole 221, described tube-end forming external mold 21 fixedly is connected with cold-drawn external mold 11.
The structure of cold-drawn mechanism 1 is arranged so that when steel pipe drawing 3, inner die for cold-drawn process 12 rear ends can draw secondary bar to rigidly fix, the reaction force of inner die for cold-drawn process 12 by with the frictional force of steel pipe 3 and steel pipe 3 distortion the time reaches a poised state, stably remain on the distortion section, the stretching bar only plays and promotes inner die for cold-drawn process 12 to the effect in soil work zone, therefore the bar that stretches is stressed little, is difficult for breaking, and is conducive to save material cost; Inner die for cold-drawn process 12 positions can automatically be controlled and align, and have guaranteed that process of tube plug drawing mill is stable and have carried out normally, have effectively prevented from pulling off the appearance of the abnormalities such as steel pipe 3, size fluctuation; When using existing cold drawing die steel pipe drawing 3, need to regulate the work band of internal mold and external mold, otherwise stress is concentrated or lengthening coefficient is excessive, the phenomenon of " empty sinking or pull off " steel pipe 3 occurred.And cold drawing die provided by the utility model is after preparing cold-drawn external mold 11, inner die for cold-drawn process 12 by skill requirement on producing, need not specifically regulate internal mold and external mold on make segment length, can shorten the time that the operative employee adjusts mould, the requirement of reduction to operative employee's drawing technique, thus operating rate improved; To sum up, by above-mentioned technology contents as can be known, the utility model oneself reached shorten the production cycle, improve production effect, purpose that energy-saving and emission-reduction reduced production costs, alleviated operator labour intensity; Tube-end forming mechanism 2 arranges original integrated steel pipe 3 end moulds, changes to adopt drift, baffle plate 22 and core rod 23 2 parts to form, and wherein adopts Hardmetal materials core rod 23 to process seamless steel pipe 3, core rod 23 is not fragile, because core rod 23 hardness are high, processing capacity is many, and a punching press just can make seamless steel pipe 3 moulding, so working (machining) efficiency is high, expend time in few, simultaneously, if damage, only need with die change core 23, so processing cost is lower.
Described circular cone wall-reducting section 122 is divided into the first wall-reducting section 1221 and the second wall-reducting section 1222, the first wall-reducting sections 1221 are connected with guide section 121, and the second wall-reducting section 1222 is connected with the equal wall section 123 of cylinder; The axial tapering of described the second wall-reducting section 1222 is less than the axial tapering of the first wall-reducting section 1221.
By adopting technique scheme, make the setting of cold-drawn mechanism 1 more specifically, in process of tube plug drawing mill, the wall tube reducing that subtracts of steel pipe 3 was divided into for two steps and carries out, the first wall-reducting section 1221 plays and once subtracts the wall effect, the second wall-reducting section 1222 plays secondary and subtracts the wall effect, compare existing inner die for cold-drawn process 12, the tube reducing wall-reducting section of steel pipe 3 increases, impulsive force when reducing inner die for cold-drawn process 12 and nipping, avoid steel pipe 3 once to be out of shape excessive and fracture that cause, improve the stability of steel pipe 3 drawings, and also reduced to a certain extent the wearing and tearing of inner die for cold-drawn process 12.
The degree of depth of the larger diameter end of described cylindrical step through hole 211 equals the thickness sum of baffle plate 22 and core rod 23.
By adopting technique scheme, make the structure of tube-end forming mechanism 2 specialize, the degree of depth of the larger diameter end of cylindrical step through hole 211 equals the thickness sum of baffle plate 22 and core rod 23, can reduce even to eliminate the die parting line that between baffle plate 22 and core rod 23, steel pipe 3 is caused, make tube-end forming mechanism 2 that rationalization is set.
The utility model can be according to the length of the steel pipe 3 of required production, selects the cold-drawn external mold 11 and the inner die for cold-drawn process 12 that need, and the end that is shaped at steel pipe 3 arranges tube-end forming mechanism 2, processes step on seamless steel pipe 3, is used for axial limiting.
Claims (3)
1. seamless steel pipe monolithic molding mould, it is characterized in that: comprise cold-drawn mechanism and tube-end forming mechanism, described cold-drawn mechanism comprises cold-drawn external mold and inner die for cold-drawn process, described cold-drawn external mold is provided with draw hole, and described inner die for cold-drawn process is divided into the equal wall section of guide section, circular cone wall-reducting section and cylinder successively along the steel pipe drawing direction; Described tube-end forming mechanism comprises tube-end forming external mold, baffle plate and core rod, the tube-end forming external mold is provided with the cylindrical step through hole, baffle plate and cylindrical step through hole interference fit, and baffle plate is conflicted and is placed in the step place of larger diameter end, core rod and tube-end forming external mold interference fit, and core rod is placed in the other end at the relative larger diameter end step of baffle plate place, the core rod center is provided with the core rod through hole that passes for steel pipe, the baffle plate center is provided with the baffle plate through hole that passes for steel pipe, described cylindrical step through hole and core rod through hole, the coaxial setting of baffle plate through hole; Described tube-end forming external mold fixedly is connected with the cold-drawn external mold.
2. seamless steel pipe monolithic molding mould according to claim 1, it is characterized in that: described circular cone wall-reducting section is divided into the first wall-reducting section and the second wall-reducting section, and the first wall-reducting section is connected with guide section, and the second wall-reducting section is connected with the equal wall section of cylinder; The axial tapering of described the second wall-reducting section is less than the axial tapering of the first wall-reducting section.
3. seamless steel pipe monolithic molding mould according to claim 1 and 2, it is characterized in that: the degree of depth of the larger diameter end of described cylindrical step through hole equals the thickness sum of baffle plate and core rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220721795 CN202984317U (en) | 2012-12-24 | 2012-12-24 | Seamless steel pipe integral forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220721795 CN202984317U (en) | 2012-12-24 | 2012-12-24 | Seamless steel pipe integral forming die |
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| Publication Number | Publication Date |
|---|---|
| CN202984317U true CN202984317U (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220721795 Expired - Fee Related CN202984317U (en) | 2012-12-24 | 2012-12-24 | Seamless steel pipe integral forming die |
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| CN (1) | CN202984317U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344726A (en) * | 2015-11-13 | 2016-02-24 | 重庆市迈鸿食品有限公司 | Die |
| CN106216402A (en) * | 2016-07-28 | 2016-12-14 | 张家港华裕有色金属材料有限公司 | Titanium or titanium alloy tube cold rolling increasing wall shaped device and method |
| CN108971248A (en) * | 2018-09-10 | 2018-12-11 | 江阴市洪腾机械有限公司 | A kind of inner die for cold-drawn process for eliminating steel pipe inside spin |
| CN113617866A (en) * | 2021-09-03 | 2021-11-09 | 吴海录 | Special-shaped steel pipe manufacturing die |
| CN116511272A (en) * | 2023-03-13 | 2023-08-01 | 苏州华创特材股份有限公司 | Cold drawing die and cold drawing production process for seamless special-shaped tube |
-
2012
- 2012-12-24 CN CN 201220721795 patent/CN202984317U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344726A (en) * | 2015-11-13 | 2016-02-24 | 重庆市迈鸿食品有限公司 | Die |
| CN106216402A (en) * | 2016-07-28 | 2016-12-14 | 张家港华裕有色金属材料有限公司 | Titanium or titanium alloy tube cold rolling increasing wall shaped device and method |
| CN108971248A (en) * | 2018-09-10 | 2018-12-11 | 江阴市洪腾机械有限公司 | A kind of inner die for cold-drawn process for eliminating steel pipe inside spin |
| CN113617866A (en) * | 2021-09-03 | 2021-11-09 | 吴海录 | Special-shaped steel pipe manufacturing die |
| CN113617866B (en) * | 2021-09-03 | 2023-10-31 | 江苏兴洋管业股份有限公司 | Special-shaped steel pipe manufacturing die |
| CN116511272A (en) * | 2023-03-13 | 2023-08-01 | 苏州华创特材股份有限公司 | Cold drawing die and cold drawing production process for seamless special-shaped tube |
| CN116511272B (en) * | 2023-03-13 | 2023-10-20 | 苏州华创特材股份有限公司 | Cold drawing die and cold drawing production process for seamless special-shaped tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20181224 |