CN106903179A - A kind of single shaft extrudes the device and method that two-tube mouth shapes simultaneously - Google Patents
A kind of single shaft extrudes the device and method that two-tube mouth shapes simultaneously Download PDFInfo
- Publication number
- CN106903179A CN106903179A CN201610868471.3A CN201610868471A CN106903179A CN 106903179 A CN106903179 A CN 106903179A CN 201610868471 A CN201610868471 A CN 201610868471A CN 106903179 A CN106903179 A CN 106903179A
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- recipient
- ozzle
- ejector pin
- blank
- extruder
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/212—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/217—Tube extrusion presses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of single shaft and extrudes the device and method that two-tube mouth shapes simultaneously, belongs to band ozzle posted sides pipeline manufacture field.The device includes extruder and pressurizing unit with lift cylinder, and pressurizing unit includes upper ejector pin, lower push rod, recipient and recipient overcoat, and pressurizing unit is arranged on extruder, and lift cylinder drives and be enclosed within outside recipient vertical direction motion；Recipient overcoat lock ring recipient, recipient is moved with recipient overcoat；The device realizes the flowing of metal in blank by upper and lower push rod to the extruding of blank.Metal is full of die cavity when extruding starts, and frictionally makes blank, recipient move together；When completion is inflated, top fitting upper metal flows to top fitting, and lower ozzle lower-lying metal flows to lower ozzle, and the metal between upper and lower ozzle is zero relative to blank speed.The present invention can direct forming inner bore of pipeline and ozzle endoporus, the structural strength at raising ozzle, improvement mechanics of metal and structure property, raising stock utilization.
Description
Technical field
The present invention relates to band ozzle posted sides pipeline manufacture field, particularly relate to a kind of single shaft and extrude what two-tube mouth shaped simultaneously
Device and method.
Background technology
Large-scale two-tube mouth posted sides pipeline is widely used in the fields such as nuclear power, thermoelectricity, but because its volume size is larger, shape
Feature is also complex, and ozzle and pipe connection portion position performance requirement are high, how to obtain preferable large-scale two-tube mouth pipeline into
Pipeline manufactures a great problem in field.So far, the method for manufacturing large-scale two-tube mouth pipeline substantially has following three kinds：One kind is
Method by forging, obtains the solid blanks with solid boss conduit profile, then by solid blanks flat-die forging shaping
Machining inner bore of pipeline and ozzle endoporus.This method heating many, tedious process of fire time cause production efficiency lowly, material
Utilization rate is low, energy ezpenditure pipeline structure property high is poor.Second is, based on drawing process, pipe to be manufactured by extrusion technique,
And pre-manufactured hole is provided with pipe, to, by drawbench withdrawing pattern, flange being extracted at pre-manufactured hole after heating at pre-manufactured hole, the later stage adds
Work is into ozzle.This method is only applicable to ozzle height pipeline not high, and properties of product are unstable after shaping, and quality is difficult to
Ensure.Be welded to shaped ozzle on pipe by welding procedure and shaped by the third method.This method ozzle and
Pipeline junction anticorrosion stress-resistant and low intensity, cause service life to greatly shorten.Although three of the above method can be obtained
To the pipeline with ozzle, but all there is certain deficiency, be not the desirable technique for manufacturing large-scale two-tube mouth pipeline.Thus send out
A kind of device of bright new large-scale two-tube mouth pipeline, and its technique is designed is significant.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of single shaft and extrudes the device and method that two-tube mouth shapes simultaneously, this
Invention is based on extrusion molding principle, it is proposed that the technological process of extruding of " single shaft is extruded, and two-tube mouth shapes simultaneously ".Using being squeezed into
Shape technique can not only improve the deformability of blank, and it is excellent drip molding is had that dimensional accuracy is high, surface quality is good etc.
Point, improves the combination property of part.Propose to shape upper and lower ozzle method simultaneously on this basis, it is ensured that part performance is continuous
Uniformly.This invention can be widely applied to main nuclear power pipeline field.
The device includes extruder and pressurizing unit, and extruder band oil cylinder, pressurizing unit includes upper ejector pin, recipient, squeezes
Pressure cylinder overcoat and lower push rod, are fixed outside recipient by recipient overcoat lock ring, and upper ejector pin upper end passes through fixed plate and extruder
Upper beam is connected, and lower push rod lower end is connected by fixed plate with extruder lower platform, upper ejector pin bottom connection upper ejector pin plug, blank
Two bore at an angle to each other are provided between upper ejector pin plug and recipient, on recipient, preceding extruding is divided into along bore
Cylinder and rear recipient two parts, by bore center and upper ejector pin core rod touch, lower ozzle plug is by another for top fitting plug
Individual bore center and upper ejector pin core rod touch, oil cylinder drive and be enclosed within outside recipient vertical direction motion.
Wherein, shaped pipe length needed for upper ejector pin plug length is slightly larger than.
Fillet is equipped with two bore of recipient.
Through hole of the Radius equal to upper ejector pin plug (2) radius is opened in lower push rod center, is squeezed downwards for upper ejector pin
Be pressed into.
The axis of upper ejector pin, upper ejector pin plug, lower push rod, lower push rod institute opened hole, blank and recipient overlaps.
The method that the device for extruding the shaping simultaneously of two-tube mouth using the single shaft is formed, comprises the following steps：
(1) hung onto after whole device is assembled on extruder lower platform, it is empty to be transported to extruder opening by lower platform
Between in；
(2) oil cylinder drives recipient overcoat descending, and from peripheral banding recipient；
(3) after lock ring is good, recipient overcoat is up, and whole device lifting is started at extruder upper mounting plate
Preheating device, and prepare to send into blank；
(4) after the completion of blank heating, hang and be sent to lower platform, in feeding extruder opening；
(5) whole device is up, until device upper surface contacts with upper ejector pin lower surface；Meanwhile, lower push rod promotes blank
To precalculated position；
(6) upper ejector pin speed v is set1And oil cylinder drives the speed v of recipient overcoat2；
(7) extrusion process starts, and stopping is extruded at the T moment, and now upper and lower ozzle shapes completion simultaneously；
(8) recipient overcoat is descending and back-off assembly；
(9) lower platform sends out device and extrusion tube blank simultaneously；
(10) device is dismantled and takes out pipe.
Wherein, the T moment meets following formula in step (7)：
Wherein, v1It is upper ejector pin speed；v2It is recipient overcoat speed；r1It is top fitting inner end diameter；r2It is top fitting end
Portion's external diameter；r3It is top fitting bottom lower end radius surface；r4It is lower ozzle inner end diameter；r5It is lower ozzle outer end diameter；r6It is down tube
Gonys subordinate's end face radius；l1It is top fitting tip lengths；l2It is lower ozzle tip lengths；L1It is top fitting length；L2It is down tube
Mouth length.
The principle of the invention is：The flowing of metal in blank is realized to the extruding of blank by upper and lower push rod.Be intended to so that on
Metal fills shaping at a same speed in ozzle and lower ozzle, then need to meet under the metal speeds and inflow flowed into top fitting
Metal speeds size in ozzle is identical.Metal preferentially fills full die cavity and upset blank when extruding starts, and frictionally makes
Blank, recipient device, recipient overcoat is obtained to move together.When completion is inflated, top fitting upper metal flows to top fitting, under
The lower ozzle of ozzle lower-lying metal flow direction, the metal between upper and lower ozzle is zero relative to blank speed.
Above-mentioned technical proposal of the invention has the beneficial effect that：
(1) production efficiency is high, and hollow shaft, hollow nipple are once-forming by extruding.Before avoiding technique it is solid into
The cumbersome process that shape is machined out again, reduces fiery time.
(2) stock utilization is high, and blank forged piece main shaft is hollow, and ozzle is hollow, saves lot of materials.It is real before avoiding
The waste of material that technique is caused is punched out after heart blank forming again.
(3) upper and lower ozzle is shaped simultaneously, and the speed of shaping is accelerated under identical operating mode so that upper and lower ozzle has phase
Same stress state, it is to avoid cause grain growth because the time is long.
(4) mechanics and structure property are improve, heating times are rare beneficial to metal inside tissue is improved, while being squeezed into
During shape, material is in three-dimensional compressive stress, and material structure is finer and close.
(5) versatility is good, and the present invention has drawn the universal relation formula met realize shaping simultaneously needed for by the derivation of equation,
For different duct lengths and the pipeline of internal-and external diameter, ozzle height and internal-and external diameter, speed can be set by corresponding relational expression
Degree.
(6) apparatus structure is simply easy to dismounting, and designs into a ladder recipient in view of the convenient problem of modulus.
(7) solving can not realize two-tube mouth while the problem of extrusion molding on single shaft extruder.
(8) low cost of manufacture, device materials use device steel, price is low, easily obtains.
Brief description of the drawings
Fig. 1 is that single shaft of the invention extrudes the apparatus structure schematic diagram that two-tube mouth shapes simultaneously；
Fig. 2 is recipient structural representation of the invention, wherein, Fig. 2 a are preceding recipient structural representation, after Fig. 2 b are
Recipient structural representation；
Fig. 3 is dimensional drawing after two-tube mouth pipeline forming of the invention；
Fig. 4 is nozzle size figure of the invention, wherein, Fig. 4 a are ozzle actual size figure, and Fig. 4 b are the rough size of ozzle
Figure；
Fig. 5 is forging blank dimensional drawing of the invention；
Fig. 6 is extrusion process schematic diagram of the invention.
Wherein：1- upper ejector pins；2- upper ejector pin plugs；3- blanks；4- top fitting plugs；5- oil cylinders；Ozzle plug under 6-；7-
Recipient overcoat；8- recipients；9- lower push rods.
Specific embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of single shaft and extrudes the device and method that two-tube mouth shapes simultaneously.
As shown in Fig. 1 and Fig. 2 (Fig. 2 a and Fig. 2 b), extruder band oil cylinder 5 in the device, pressurizing unit include upper ejector pin 1,
Recipient 8, recipient overcoat 7 and lower push rod 9, are fixed outside recipient 8 by the lock ring of recipient overcoat 7, and the upper end of upper ejector pin 1 passes through
Fixed plate is connected with extruder upper beam, and the lower end of lower push rod 9 is connected by fixed plate with extruder lower platform, and the bottom of upper ejector pin 1 connects
Ejector pin and mandrel 2 is connected, blank 3 is located between upper ejector pin plug 2 and recipient 8, two bore is provided with recipient 8, along bore
It is divided into preceding recipient and rear recipient two parts, top fitting plug 4 to be contacted with upper ejector pin plug 2 by bore center, down tube
Mouth plug 6 is contacted by another bore center with upper ejector pin plug 2, and oil cylinder 5 drives recipient overcoat 7 to be transported in vertical direction
It is dynamic.
As shown in fig. 6, comprising the following steps that in use：
(1) hung onto after whole device is assembled on extruder lower platform, it is empty to be transported to extruder opening by lower platform
Between in；
(2) oil cylinder 5 drives recipient overcoat 7 descending, and from peripheral banding recipient 8；
(3) after lock ring is good, recipient overcoat 7 is up, and whole device lifting is opened at extruder upper mounting plate
Beginning preheating device, and prepare to send into blank 3；
(4) after the completion of blank 3 is heated, hang and be sent to lower platform, in feeding extruder opening；
(5) whole device is up, until device upper surface contacts with the lower surface of upper ejector pin 1；Meanwhile, lower push rod 9 promotes base
Material 3 arrives precalculated position；
(6) the speed v of upper ejector pin 1 is set1And oil cylinder 5 drives the speed v of recipient overcoat 72；
(7) extrusion process starts, and stopping is extruded at the T moment, and now upper and lower ozzle shapes completion simultaneously；
(8) recipient overcoat 7 is descending and back-off assembly；
(9) lower platform sends out device and extrusion tube blank simultaneously；
(10) device is dismantled and takes out pipe.
Wherein, the specific determination process at T moment is as follows：
If upper ejector pin speed v1, direction downwards, then in time t, upper ejector pin stroke v1t。
If recipient overcoat speed v2(recipient, blank due to Extrusion bulging, with the same speed of recipient overcoat), direction
Downwards, then time t when upper ejector pin with respect to blank stroke (v1-v2)t。
If upper ejector pin institute cored bar radiusBlank radiusAs shown in Figure 3.Then when
Between t when, upper ejector pin is to blank amount of compression(v1-v2)t。
In time t, blank has walked v downwards with respect to lower push rod2The stroke of t, namely equivalent to lower push rod with respect to blank to
On walked v2The stroke of t, now lower push rod be to blank amount of compression
If top fitting end is internal diameterExternal diameterLength is l1Approximate circle
Cylinder, bottom can approximately be regarded as a upper end radius surface for r2, lower end radius surface isHighly it is (L1-l1)
Approximate circle, as shown in Figure 4 b, Fig. 4 a be actual size.Then top fitting volume is
Similarly, nozzle end is set for internal diameterExternal diameterLength is l2
Approximate cylinder, bottom is approximately regarded as a upper end radius surface for r5, lower end radius surface is r6 Highly it is (L2-
l2) approximate round platform, as shown in Figure 3.The ozzle volume is then descended to be
Upper and lower ozzle when being located at time T is while fill completion, then the volume of inflow top fitting per second is
(v1-v2), ozzle volume is under inflow per second
Because blank is used to shape top fitting with respect to the motion of upper ejector pin, under blank is used to shape with respect to the speed of lower push rod
Ozzle.It is intended to be shaped simultaneously at the T moment, then meets following equation：
Upper and lower ozzle is capable of achieving to shape simultaneously.
Consider allowance factor, should cause that original blank internal diameter size, less than actual parts size, finally obtains forging
Dimensional drawing is as shown in Figure 5.
In sum, forging blank size is as shown in Figure 5.
Wherein：l1- top fitting tip lengths；d1- top fitting end is internal diameter；d2- top fitting outer end diameter d3- upper pipe
Mouth lower surface diameter；l2- lower ozzle tip lengths；d4- lower nozzle end is internal diameter；d5- lower ozzle outer end diameter；d6- down tube
Mouth lower surface diameter；L1- top fitting length；L2- lower ozzle length；L3- top fitting center is to pipeline distance from top；L4- upper and lower
Ozzle centre distance；L5- lower ozzle center to duct bottom distance；D1- upper ejector pin institute cored bar diameter；D2- blank diameter；
(r1-Δr1)-forging top fitting aperture dimension；(r2-Δr2)-lower ozzle aperture dimension；(R1-ΔR1)-tube body diameter chi
It is very little；(R2+ΔR2)-pipe shaft outside dimension；(h1+Δh1Pipeline distance from top is arrived at)-forging top；L3- top fitting center is to pipeline
Distance from top；L4- upper and lower ozzle centre distance；L5- lower ozzle center to duct bottom distance；(h2+Δh2)-forging bottom is arrived
Duct bottom distance.
The above is the preferred embodiment of the present invention, it is noted that in the description of the invention, term " preceding ",
" afterwards ", " on ", the orientation of the instruction such as D score or position relationship be based on orientation shown in the drawings or position relationship, merely to just
Described in the description present invention and simplifying, rather than indicate imply signified device or element must have specific orientation, with
Specific azimuth configuration and operation, thus be not considered as limiting the invention.For the ordinary skill people of the art
For member, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
Also should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of single shaft extrudes the device that two-tube mouth shapes simultaneously, it is characterised in that：Including extruder and pressurizing unit, extruder
Band oil cylinder (5), pressurizing unit includes upper ejector pin (1), recipient (8), recipient overcoat (7) and lower push rod (9), recipient (8)
Outside is fixed by recipient overcoat (7) lock ring, and upper ejector pin (1) upper end is connected by fixed plate with extruder upper beam, lower push rod (9)
Lower end is connected by fixed plate with extruder lower platform, and upper ejector pin (1) bottom connects upper ejector pin plug (2), and blank (3) is positioned at upper
Between ejector pin and mandrel (2) and recipient (8), two bore are provided with recipient (8), are divided into preceding recipient along bore and squeeze afterwards
Pressure cylinder two parts, top fitting plug (4) is contacted by bore center with upper ejector pin plug (2), and lower ozzle plug (6) is by another
Individual bore center contacts with upper ejector pin plug (2), and oil cylinder (5) drives recipient overcoat (7) to be moved in vertical direction.
2. single shaft according to claim 1 extrudes the device that two-tube mouth shapes simultaneously, it is characterised in that：The upper ejector pin core
Rod (2) length is more than required shaped pipe length.
3. single shaft according to claim 1 extrudes the device that two-tube mouth shapes simultaneously, it is characterised in that：The recipient
(8) fillet is equipped with two bore.
4. single shaft according to claim 1 extrudes the device that two-tube mouth shapes simultaneously, it is characterised in that：The lower push rod
(9) through hole of the Radius equal to upper ejector pin plug (2) radius is opened in center.
5. the single shaft according to claim 1 or 4 extrudes the device that two-tube mouth shapes simultaneously, it is characterised in that：The upper top
The axis weight of bar (1), upper ejector pin plug (2), lower push rod (9), lower push rod (9) institute opened hole, blank (3) and recipient (8)
Close.
6. the method that the device for extruding the shaping simultaneously of two-tube mouth using the single shaft described in claim 1 is formed, its feature exists
In：Comprise the following steps：
(1) hung onto after whole device is assembled on extruder lower platform, extruder open space is transported to by lower platform
In；
(2) oil cylinder (5) drives recipient overcoat (7) descending, and from peripheral banding recipient (8)；
(3) after lock ring is good, recipient overcoat (7) is up, and whole device lifting is started at extruder upper mounting plate
Preheating device, and prepare feeding blank (3)；
(4) after the completion of blank (3) heating, hang and be sent to lower platform, in feeding extruder opening；
(5) whole device is up, until device upper surface contacts with upper ejector pin (1) lower surface；Meanwhile, lower push rod (9) promotes base
Material (3) to precalculated position；
(6) upper ejector pin (1) speed v is set1And oil cylinder (5) drives the speed v of recipient overcoat (7)2；
(7) extrusion process starts, and stopping is extruded at the T moment, and now upper and lower ozzle shapes completion simultaneously；
(8) recipient overcoat (7) is descending and back-off assembly；
(9) lower platform sends out device and extrusion tube blank simultaneously；
(10) device is dismantled and takes out pipe.
7. single shaft according to claim 6 extrudes the device that two-tube mouth shapes simultaneously, it is characterised in that：The step (7)
The middle T moment meets following formula：
Wherein, v1It is upper ejector pin speed；v2It is recipient overcoat speed；r1It is top fitting inner end diameter；r2Outside for top fitting end
Footpath；r3It is top fitting bottom lower end radius surface；r4It is lower ozzle inner end diameter；r5It is lower ozzle outer end diameter；r6It is down tube gonys
Subordinate's end face radius；l1It is top fitting tip lengths；l2It is lower ozzle tip lengths；L1It is top fitting length；L2For lower ozzle is long
Degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610868471.3A CN106903179B (en) | 2016-09-29 | 2016-09-29 | A kind of uniaxial device and method for squeezing two-tube mouth and shaping simultaneously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610868471.3A CN106903179B (en) | 2016-09-29 | 2016-09-29 | A kind of uniaxial device and method for squeezing two-tube mouth and shaping simultaneously |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106903179A true CN106903179A (en) | 2017-06-30 |
| CN106903179B CN106903179B (en) | 2019-05-10 |
Family
ID=59206587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610868471.3A Active CN106903179B (en) | 2016-09-29 | 2016-09-29 | A kind of uniaxial device and method for squeezing two-tube mouth and shaping simultaneously |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106903179B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108746244A (en) * | 2018-06-19 | 2018-11-06 | 烟台市台海集团有限公司 | A kind of extrusion process and main pipeline of the nuclear power main pipeline with ozzle |
| CN112846057A (en) * | 2021-02-20 | 2021-05-28 | 中国第一重型机械股份公司 | Integral profiling extrusion method for thin-wall pipeline with multiple nozzles |
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| AU2352588A (en) * | 1983-02-03 | 1989-01-19 | Mb Group Plc | Continuous extrusion of metals |
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| AU2352588A (en) * | 1983-02-03 | 1989-01-19 | Mb Group Plc | Continuous extrusion of metals |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108746244A (en) * | 2018-06-19 | 2018-11-06 | 烟台市台海集团有限公司 | A kind of extrusion process and main pipeline of the nuclear power main pipeline with ozzle |
| CN112846057A (en) * | 2021-02-20 | 2021-05-28 | 中国第一重型机械股份公司 | Integral profiling extrusion method for thin-wall pipeline with multiple nozzles |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106903179B (en) | 2019-05-10 |
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