CN105834339A - Energy accumulator tank extrusion die - Google Patents
Energy accumulator tank extrusion die Download PDFInfo
- Publication number
- CN105834339A CN105834339A CN201610367793.XA CN201610367793A CN105834339A CN 105834339 A CN105834339 A CN 105834339A CN 201610367793 A CN201610367793 A CN 201610367793A CN 105834339 A CN105834339 A CN 105834339A
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- die
- drift
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K21/00—Making hollow articles not covered by a single preceding sub-group
- B21K21/02—Producing blanks in the shape of discs or cups as semifinished articles for making hollow articles, e.g. to be deep-drawn or extruded
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention provides an energy accumulator tank extrusion die. The die comprises a male die seat, a punch and a female die; the punch comprises an annular punch body and a punch core capable of being arranged in an inner cavity of the annular punch body in a penetrating manner, the upper end of the annular punch body is fixedly connected to the lower end face of the male die seat, and when the punch core is pressed in the vertical direction, the punch core can vertically slide relative to the annular punch body; the female die is an annular columnar body and is located below the punch; an upper die cavity and a lower die cavity capable of facing the punch are formed by the female die, and the inner diameter of the lower die cavity is smaller than that of the upper die cavity; a gap exists between the upper die cavity and the punch, and a gap exists between the lower die cavity and the punch; and the outer diameter of the annular punch body is matched with the inner diameter of the upper die cavity, and the outer diameter of the punch core is smaller than the inner diameter of the lower die cavity. The energy accumulator tank extrusion die can effectively prevent the phenomenon that in the extrusion process of the bottom of a cup-shaped blank, bending deformation happens, the upper hole diameter and the lower hole diameter of a hole cavity of the cup-shaped blank are completely consistent, and the coaxiality of a finished product is ensured.
Description
Technical field
The present invention relates to the forging mold of a kind of cup-shaped member, specifically a kind of vapour Vehicle Accumulator tank body extrusion die.
Background technology
Accumulator is a kind of energy savings device in hydropneumatic system, the excess pressure produced during hydraulic system cyclical action can be become compression energy or potential energy stores, when system needs, again compression or potential energy are changed into hydraulic pressure or air pressure homenergic form discharges, again mend feed system.Generally accumulator is made up of four parts such as the hydraulic fluids under compressible gas, interlayer on tank body, interlayer, interlayer.Tank body is the strength member of accumulator, bears bigger pressure time in working order.
See Figure 1A and Figure 1B, it illustrates the structure of a kind of accumulator tank body, its one end has opening 101, the other end is the bottom 102 closed, the outer wall of opening 101 one end has step, the inner surface of bottom 102 has boss (not shown), outer surface has blind hole 105, and boss and blind hole 105 are oppositely arranged.Step includes stage portion 103 and step transitions 104.
Accumulator tank body is generally metal structure, and it is formed by forging equipment cold forging, and most important of which step is exactly to use special extrusion die to carry out extruded to blank.Seeing accompanying drawing 2, it illustrates the blank of the accumulator tank body product form variation diagram in extrusion process, extrusion process can be summarized as follows: first selects suitable bar, and completes base by lathe, obtains bar-shaped blank 100a；Using the extrusion die with specific die cavity that bar-shaped blank 100a is squeezed into cup-shaped blank 100b, the bottom interior surface of this cup-shaped blank 100b is squeezed out boss；Use the extrusion die with another kind of specific die cavity that cup-shaped blank 100b is squeezed into the cup-shaped blank 100c with step；Complete the techniques such as follow-up extruding blind hole the most again to realize the final shaping of accumulator tank body.
Cup-shaped blank 100b is squeezed into the cup-shaped blank 100c with step, needs the die cavity to extrusion die and drift to carry out particular design.Seeing Fig. 3, it illustrates the installation diagram of a kind of accumulator tank body extrusion die of the prior art and cup-shaped blank 100b, cup-shaped blank 100b can be squeezed into the cup-shaped blank 100c with step by this accumulator tank body extrusion die.The die cavity of this accumulator tank body extrusion die is formed by connecting by upper cavity 203 and lower mode cavity 204, and wherein, the internal diameter of upper cavity 203 is more than the internal diameter of lower mode cavity 204.The drift of this accumulator tank body extrusion die is by drift core 202 and the annular punch 201 being set in described drift core 202 periphery, the upper end of described drift core 202 and described annular punch 201 is all fixedly connected on the convex mould base of extrusion die, and can be along with convex mould base DL synchronization, with the cup-shaped blank 100b in extrusion die cavity.
The workflow of above-mentioned accumulator tank body extrusion die of the prior art is as follows: will put into the upper cavity 203 of extrusion die bottom cup-shaped blank 100b down, convex mould base is descending, drive drift core 202 and annular punch 201 DL synchronization, until drift core 202 contacts with the bottom of cup-shaped blank 100b, annular punch 201 contacts with the rim of a cup of cup-shaped blank 100b；Convex mould base is pressed down against, and annular punch 201 starts to be pressed down against cup-shaped blank 100b, and the bottom of cup-shaped blank 100b starts to attenuate in the case of pressurized, and extends downwardly into lower mode cavity 204, ultimately forms the cup-shaped blank 100C with step.
There is following technical problem in above-mentioned accumulator tank body extrusion die of the prior art:
1, drift core 202 and annular punch 201 are fixedly arranged on convex mould base, when the bottom of cup-shaped blank 100b is squeezed into lower mode cavity 204, restriction due to its length, drift core 202 cannot contact the bottom of cup-shaped blank 100b again, the bottom causing cup-shaped blank 100b loses the pressure support of drift core 202, thus cause its two-way pressure unbalance, it is folded upward at deformation at the as easy as rolling off a log bottom margin causing cup-shaped blank 100b.
2, after the bottom of cup-shaped blank 100b is squeezed into lower mode cavity 204, drift core 202 only upper part (being positioned at the part of upper cavity 203) with the bore inner walls of cup-shaped blank 100b contacts, the lower part (being positioned at the part of lower mode cavity 204) of bore inner walls is owing to losing the lateral support of drift core, its aperture will necessarily diminish by pressurized, thus cause the aperture up and down of the vestibule of cup-shaped blank 100b inconsistent, the final axiality destroying accumulator tank body product.
Summary of the invention
For solving above-mentioned technical problem, the present invention proposes a kind of accumulator tank body extrusion die, and its technical scheme is as follows:
A kind of accumulator tank body extrusion die, it includes convex mould base；Drift, described drift is arranged on the lower section of described convex mould base, described drift include annular punch and be located in described annular punch inner chamber in drift core, the upper end of described annular punch is fixedly connected on the lower surface of described convex mould base, the sidewall of described drift core is inconsistent with the interior cavity wall of described annular punch to be connected to realize extruding, and described drift core can slide up and down relative to described annular punch when vertical direction pressurized；Drift set, described drift set is positioned at the top of described drift for fixing described drift；Die, described die is ring-type cylinder, described die is positioned at the lower section of described drift, described die is formed with the upper cavity towards described drift and lower mode cavity, the internal diameter of described lower mode cavity is less than the internal diameter of described upper cavity, described upper cavity and described lower mode cavity respectively and there are gap between described drift, the external diameter of described annular punch matches with the internal diameter of described upper cavity, and the external diameter of described drift core is less than the internal diameter of described lower mode cavity；Die outer ring, the outer ring of described die is located at the outside of described die.
Further, the accumulator tank body extrusion die of the present invention also includes being arranged on the ejector beam below described lower mode cavity.
Further, the lower surface of described drift core is provided with pit.
Compared with prior art, the drift core of the present invention realizes being flexibly connected by friction pretightning force with annular punch, can move up and down relative to annular punch during the vertical pressurized of drift core, it has the following technical effect that in (1), extrusion process, the bottom of drift core and cup-shaped blank is constantly in the state of full contact, the two-way pressure making the bottom of cup-shaped blank keeps balance, and the bottom that effectively prevent cup-shaped blank occurs bending deformation；(2), in extrusion process, drift core keeps completely attaching to the bore inner walls of cup-shaped blank so that the aperture up and down of the vestibule of cup-shaped blank is completely the same, it is ensured that the axiality of finished product.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, the accompanying drawing used is needed to be briefly described described in embodiment being described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.Wherein:
Figure 1A is the front view of the structural representation of a kind of accumulator tank body；
Figure 1B is the stereogram of the structural representation of a kind of accumulator tank body；
Fig. 2 is the blank of accumulator tank body product form variation diagram in extrusion process；
Fig. 3 is the installation diagram of existing accumulator tank body extrusion die and cup-shaped blank；
Fig. 4 is the accumulator tank body extrusion die installation diagram with cup-shaped blank of the present invention.
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, the present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
Seeing accompanying drawing 2 and accompanying drawing 4, accompanying drawing 2 shows the blank of accumulator tank body product form variation diagram in extrusion process, and accompanying drawing 4 shows the accumulator tank body extrusion die of the present invention and the installation diagram of the cup-shaped blank 100b in accompanying drawing 2.
As shown in Figure 4, the accumulator tank body extrusion die of the present invention includes convex mould base 302；Drift 301, described drift 301 is arranged on the lower section of described convex mould base 302, described drift 301 include annular punch 3011 and be located in described annular punch 3011 inner chamber in drift core 3012, the upper end of described annular punch 3011 is fixedly connected on the lower surface of described convex mould base 302, the sidewall of described drift core 3012 is inconsistent with the interior cavity wall of described annular punch 3011 to be connected to realize extruding, and described drift core 3012 can slide up and down relative to described annular punch 3011 when vertical direction pressurized；Drift set 303, described drift set 303 is positioned at the top of described drift 301 for fixing described drift 301；Die 304, described die 304 is ring-type cylinder, described die 304 is positioned at the lower section of described drift 301, described die 304 is formed with the upper cavity 306 towards described drift 301 and lower mode cavity 307, the internal diameter of described lower mode cavity 307 is less than the internal diameter of described upper cavity 306, described upper cavity 306 and described lower mode cavity 307 respectively and there are gap between described drift 301, the external diameter of described annular punch 3011 matches with the internal diameter of described upper cavity 306, and the external diameter of described drift core 3012 is less than the internal diameter of described lower mode cavity 307；Die outer ring 305, described die outer ring 305 ring is located at the outside of described die.
It is provided with ejector beam 308, for having ejected the cup-shaped blank of extruding below described lower mode cavity 307.
The lower surface of described drift core 3012 is provided with pit, and described pit matches with the boss in the upper base surface of cup-shaped blank 100b, effectively maintains the shape of boss.
The workflow of the accumulator tank body extrusion die of the present invention is as follows:
1, the position of drift core 3012 is adjusted so that the lower surface of drift core 3012 and convex mould base 302 retains the space of certain length (occurrence sets) according to actual conditions；
2, by the upper cavity 306 loading extrusion die bottom cup-shaped blank 100b down, then convex mould base 302 is controlled descending, convex mould base 302 drives drift core 3012 and annular punch 3011 descending, descending during, drift core 3012 first bottom with cup-shaped blank 100b contacts；
3, convex mould base 302 continues traveling downwardly, and drift core 3012 is upward sliding under the conflict of the bottom of cup-shaped blank 100b, until annular punch 3011 contacts with the rim of a cup of cup-shaped blank 100b, now drift core 3012 still maintains space with the lower surface of convex mould base 302；
4, control convex mould base 302 to start to be pressed down against, annular punch 3011 starts to extrude cup-shaped blank 100b, and drift core 3012 the most slowly slides under the conflict of the bottom of cup-shaped blank 100b, it is achieved that drift core 3012 will not form big extruding force to the bottom of cup-shaped blank 100b；
5, cup-shaped blank 100b is under the extruding of annular punch 3011, its underpart starts to attenuate, and slowly extend downward in lower mode cavity 307, now firmly cladding is formed drift core 3012 at the bottom (being positioned at the part of lower mode cavity 307) of cup-shaped blank 100b, and frictional force between the two becomes big；
6, control convex mould base 302 to continue to be pressed down against, the bottom of cup-shaped blank 100b continues to extend in lower mode cavity 307 under the extruding of annular punch 3011, during this, drift core 3012 is DL synchronization under the frictional force of cup-shaped blank 100b is drawn, until annular punch 3011 extrudes to precalculated position.
7, after extrusion process terminates, the upper and lower part of cup-shaped blank 100b is respectively in upper cavity 306 and lower mode cavity 307, cup-shaped blank 100b is extruded with the cup-shaped blank 100c of step, in ejector beam 308 stretches into lower mode cavity 307 and eject the cup-shaped blank 100c with step.
Visible, the drift core of the accumulator tank body extrusion die of the present invention realizes extruding with annular punch by friction pretightning force and is connected, and can move up and down relative to annular punch during the vertical pressurized of drift core.
The accumulator tank body extrusion die of the present invention has the following technical effect that
(1), in extrusion process, the bottom of drift core and cup-shaped blank is constantly in the state of full contact so that the two-way pressure of the bottom of cup-shaped blank keeps balance, and the bottom that effectively prevent cup-shaped blank occurs bending deformation；
(2), in extrusion process, drift core keeps completely attaching to the bore inner walls of cup-shaped blank so that the aperture up and down of the vestibule of cup-shaped blank is completely the same, it is ensured that the axiality of finished product.
Above the present invention has been carried out the most detailed description with certain particularity.Those of ordinary skill in art is it should be understood that what description in embodiment was merely exemplary, and making on the premise of without departing from true spirit and scope of the present invention is changed all should belong to protection scope of the present invention.Scope of the present invention is defined by described claims rather than is limited by the foregoing description in embodiment.
Claims (3)
1. an accumulator tank body extrusion die, it is characterised in that: it includes
Convex mould base；
Drift, described drift is arranged on the lower section of described convex mould base, and described drift includes annular punch and wears
Drift core in the inner chamber of described annular punch, the upper end of described annular punch is fixedly connected on described punch
On the lower surface of seat, the sidewall of described drift core is inconsistent with the interior cavity wall of described annular punch to realize squeezing
Pressure connects, and described drift core can slide up and down relative to described annular punch when vertical direction pressurized；
Drift set, described drift set is positioned at the top of described drift for fixing described drift；
Die, described die is ring-type cylinder, and described die is positioned at the lower section of described drift, described die shape
Becoming to have the upper cavity towards described drift and lower mode cavity, the internal diameter of described lower mode cavity is interior less than described upper cavity
Footpath, described upper cavity and described lower mode cavity respectively and there are gap, described annular punch between described drift
The internal diameter of external diameter and described upper cavity match, the external diameter of described drift core is less than the internal diameter of described lower mode cavity；
Die outer ring, the outer ring of described die is located at the outside of described die.
2. accumulator tank body extrusion die as claimed in claim 1, it is characterised in that: it also includes setting
Put the ejector beam below described lower mode cavity.
3. accumulator tank body extrusion die as claimed in claim 1, it is characterised in that: described drift core
Lower surface be provided with pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610367793.XA CN105834339B (en) | 2016-05-27 | 2016-05-27 | A kind of accumulator tank body extrusion die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610367793.XA CN105834339B (en) | 2016-05-27 | 2016-05-27 | A kind of accumulator tank body extrusion die |
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| Publication Number | Publication Date |
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| CN105834339A true CN105834339A (en) | 2016-08-10 |
| CN105834339B CN105834339B (en) | 2018-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610367793.XA Active CN105834339B (en) | 2016-05-27 | 2016-05-27 | A kind of accumulator tank body extrusion die |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881366A (en) * | 2017-01-23 | 2017-06-23 | 江苏创汽车零部件有限公司 | A kind of accumulator tank body forging cold-forging forming technique and anti-extruding mold |
| CN109746365A (en) * | 2019-03-25 | 2019-05-14 | 电子科技大学中山学院 | Cold forming die for columnar LED radiator |
| CN110802191A (en) * | 2019-07-12 | 2020-02-18 | 江苏创一精锻有限公司 | Cup-shaped body forming die with boss at bottom of inner cavity and process |
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| JPH07241644A (en) * | 1994-03-04 | 1995-09-19 | Toyota Motor Corp | Extrusion machine |
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| CN103537500A (en) * | 2013-10-24 | 2014-01-29 | 河南科技大学 | Extrusion and molding method for cup-shaped part and special extrusion die |
| CN103658400A (en) * | 2013-12-05 | 2014-03-26 | 昆山市珍和模具五金机械有限公司 | Constant pressure type cup punching die |
| CN203599260U (en) * | 2013-12-05 | 2014-05-21 | 北京机电研究所 | Extrusion forming mold |
| CN104588426A (en) * | 2015-01-14 | 2015-05-06 | 江苏创一精锻有限公司 | Energy accumulator tank forging forming process and extrusion die |
| CN205684645U (en) * | 2016-05-27 | 2016-11-16 | 江苏创一汽车零部件有限公司 | A kind of accumulator tank body extrusion die |
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2016
- 2016-05-27 CN CN201610367793.XA patent/CN105834339B/en active Active
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| JPH07241644A (en) * | 1994-03-04 | 1995-09-19 | Toyota Motor Corp | Extrusion machine |
| CN2603716Y (en) * | 2003-02-26 | 2004-02-18 | 华中科技大学 | Die forging forming mould of metal extrusion pressing |
| CN101332476A (en) * | 2008-08-01 | 2008-12-31 | 河南科技大学 | Precise extrusion molding method of thin wall long-pipe shaped parts bland and special mould |
| CN103537500A (en) * | 2013-10-24 | 2014-01-29 | 河南科技大学 | Extrusion and molding method for cup-shaped part and special extrusion die |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881366A (en) * | 2017-01-23 | 2017-06-23 | 江苏创汽车零部件有限公司 | A kind of accumulator tank body forging cold-forging forming technique and anti-extruding mold |
| CN109746365A (en) * | 2019-03-25 | 2019-05-14 | 电子科技大学中山学院 | Cold forming die for columnar LED radiator |
| CN110802191A (en) * | 2019-07-12 | 2020-02-18 | 江苏创一精锻有限公司 | Cup-shaped body forming die with boss at bottom of inner cavity and process |
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| Publication number | Publication date |
|---|---|
| CN105834339B (en) | 2018-09-07 |
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Address after: 224100 No. 5 Xikang Road, Dafeng Development Zone, Yancheng City, Jiangsu Applicant after: Jiangsu Chuangyi Automotive Parts Co., Ltd. Address before: 224100 No. 79 Xikang South Road, Dafeng City, Yancheng City, Jiangsu Applicant before: Jiangsu Chuangyi Automotive Parts Co., Ltd. |
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Effective date of registration: 20180723 Address after: 224100 No. 5 Xikang Road, Dafeng Development Zone, Yancheng City, Jiangsu Applicant after: Jiangsu Chuangyi Precision Forging Co., Ltd. Address before: 224100 No. 5 Xikang Road, Dafeng Development Zone, Yancheng City, Jiangsu Applicant before: Jiangsu Chuangyi Automotive Parts Co., Ltd. |
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