CN203292405U - Closed internal extrusion forming device - Google Patents
Closed internal extrusion forming device Download PDFInfo
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- CN203292405U CN203292405U CN2013201179611U CN201320117961U CN203292405U CN 203292405 U CN203292405 U CN 203292405U CN 2013201179611 U CN2013201179611 U CN 2013201179611U CN 201320117961 U CN201320117961 U CN 201320117961U CN 203292405 U CN203292405 U CN 203292405U
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Abstract
The utility model discloses a closed internal extrusion forming device. The closed internal extrusion forming device comprises an upper female die, a lower female die, a forming upper punch, and a forming lower punch. The upper female die and the lower female die are arranged oppositely in the vertical direction. The forming upper punch is connected with the upper female die, and a piston of an upper hydraulic cylinder into a whole. The forming lower punch is connected with the lower female die, and a lower hydraulic cylinder into a whole. The forming upper punch is divided into an upper punch core and an upper punch. The forming lower punch is divided into a lower punch core and a lower punch. According to the closed internal extrusion forming device, the material utilization rate of closely-forged parts can be improved, and a part of the inner hole portion can be formed when the shapes of the parts complex and difficult to form are forged through closed forging.
Description
Technical field
The utility model relates to the forging equipment field, relates in particular to extrusion molding apparatus in a kind of obturation.
Background technology
Block forging, be a kind of of precision forging technology technology, and it refers to that by two unidirectional or out movements with mold or drift, extrusion metal is full of die cavity, thereby obtains the Forging Technology technology of the near net-shape fine forge piece of non-trimming in the die cavity of sealing.Described near closed hollow ring is generally to be formed by the upper die and lower die matched moulds.Different from common closed die forging, extra action and operating pressure the motion that block forging need to provide except press slide and pressure, needed mold clamping force when meeting the upper and lower mould matched moulds.
The block forging basic principle: shaping dies can divide die to form by upper and lower 2; Put into blank through the proper volume of primary Calculation in the mould separated position; Patrix is closed under the effect of inaccessible power; Low punch is clamp-oned the die cavity of sealing from bottom to top, and the blank material in die cavity is out of shape and is full of die cavity under the effect of contraction of the extruding of drift and die cavity, finally obtains the accurate blank of the non-trimming that shape and size and die cavity height meet; The patrix backhaul; Upper stripping attachment dnockout, withdraw from forging from die.
Block forging can, once obtaining larger deflection and complicated profile in distortion, therefore be particularly suitable for the production of complex parts.With the finish forge part in automobile industry such as gearbox gear, inner race, three bearing pins etc., if adopt the explained hereafter of open die forging, impressing forging, stock utilization is lower, and follow-up amount of machining is large, and production cost is high.Adopt the block forging technology to produce above-mentioned net-size forging, can save most machining, make the cost decrease.Because of its These characteristics, the development in the industry parts such as automobile, space flight and aviation are made is very rapid in recent years.
it is CN1138504A block forging appts and by closing mould forging mechanism in huge Zan of Central China University of Science and Technology's summer " the typical part precision form " write as shown in Figure 3 and Figure 4 that block forging technique in the past and device are looked into the patent No., traditional closed-die extrusion forging technology upper punch 2 is close with blank diameter D with shaping low punch 7 diameters, in Fig. 1, blank segment length h is greater than forging segment length h1, the profile of difficult part though this technique and device can be shaped, but because namely need pushing, upper punch 2 and low punch 7 also need the material returned, so boss is shorter, formation of parts heart section material is thicker, raw materials consumption is more, and endoporus also can't be shaped, can increase follow-up machining surplus.
The utility model content
Problem in view of above-mentioned prior art exists, proposed the utility model.
The technical problems to be solved in the utility model is, provides a kind of building mortion of block forging so that the forging complex appearance when being shaped, makes the forging endoporus also reach near-net-shape, improves stock utilization, reduces the follow-up machining surplus of endoporus.
For solving the problems of the technologies described above, the utility model provides following technical scheme: extrusion molding apparatus in a kind of obturation comprises
Upper cavity die and lower cavity die in the ground configuration of the mutual subtend of above-below direction; With
The shaping upper punch that is connected as a single entity with the piston of upper cavity die, upper hydraulic cylinder and the shaping low punch that is connected as a single entity with lower cavity die, lower hydraulic cylinder;
Described shaping upper punch is divided into the upper punch heart and upper punch, and described shaping low punch is divided into the low punch heart and low punch.
A kind of preferred version as building mortion described in the utility model, wherein: in described obturation, extrusion molding apparatus also comprises upward pressure mechanism, described upward pressure mechanism comprises top board, upper fill block and upward pressure piece, and described upward pressure piece is arranged at the top of described upper fill block.
As a kind of preferred version of building mortion described in the utility model, wherein: described upward pressure mechanism also comprises material returned pin.
As a kind of preferred version of building mortion described in the utility model, wherein: the described upper punch heart passes described upper fill block and described upward pressure piece is inconsistent, and the described upper punch heart can move in the same way along with the movement of described upward pressure piece.
A kind of preferred version as building mortion described in the utility model, wherein: in described obturation, extrusion molding apparatus also comprises downforce mechanism, described downforce mechanism comprises lower platen, lower fill block and downforce piece, and described downforce piece is arranged at the bottom of described lower fill block.
As a kind of preferred version of building mortion described in the utility model, wherein: described downforce mechanism also comprises lower material returned pin.
As a kind of preferred version of building mortion described in the utility model, wherein: the described low punch heart passes described lower fill block and described downforce piece is inconsistent, and the described low punch heart can move in the same way along with the movement of described downforce piece.
Another technical problem to be solved in the utility model is how to solve raw materials consumption in existing block forging technique and too much reach the problem that endoporus can't be shaped.
For solving the problems of the technologies described above, the utility model provides following technical scheme:
A kind of forming technology that uses inaccessible interior extrusion molding apparatus is characterized in that:
This forming technology is completed in accordance with the following steps:
Step 1: described upward pressure mechanism, upper hydraulic cylinder and the upper punch heart are fixed in the press ram bottom, and described downforce mechanism, lower hydraulic cylinder and the low punch heart are fixed on press bench;
Step 2: the pressure oil of supplying with by hydraulic pump and accumulator makes respectively described upper cavity die, upper punch be in lower position, make described lower cavity die, low punch and intermediate plate be in upper limit position, blank is placed in lower cavity die and low punch, the formed counterdie impression of the low punch heart;
Step 3: it is descending that driving pressure machine slide block drives described upper cavity die, the upper punch heart and upper punch, and while forming the integral concave mould impression when upper cavity die contacts with lower cavity die, slide block continues descending, forces blank generation plastic deformation to be full of the die thorax and form required forging;
Step 4: driving pressure machine slide block is up, drives described upper cavity die, lower cavity die returns to upper limit position, and on this moment forcing press, to promote material returned pin descending for knock-out mechanism, and material returned pin promotes upper punch, and forging is separated with impression.
Adopt technical scheme described in the utility model, have following useful technique effect:
(1) be extruded into when shape makes closed die forming forging profile the endoporus that has been shaped in obturation;
(2) inaccessible interior extrusion molding makes the blank segment length close with the forging segment length, and profile, by producing and relatively move, only has the extruding of blank heart section to produce plastic deformation, and the defect that makes the forging profile reduce friction and produce, be improved forging quality;
(3) because extrusion molding in inaccessible is extruding endoporus shunting shaping profile, the forming punch area is relatively little, is easier to controlled pressure machine ram travel, can prevent that blank filling overfill from causing mould to damage;
(4) improved the stock utilization of block forging part, made block forging shaping part endoporus part when forging complicated difficult formation of parts profile.
Description of drawings
Fig. 1 is extrusion molding apparatus structural representation in obturation described in the utility model.
Fig. 2 uses extrusion molding apparatus forging and molding blank schematic diagram used in obturation described in the utility model.
Fig. 3 uses extrusion molding apparatus forging and molding forging master in obturation described in the utility model to look schematic diagram.
Fig. 4 uses extrusion molding apparatus forging and molding forging schematic top plan view in obturation described in the utility model.
Fig. 5 is prior art block forging appts structural representation.
Fig. 6 uses prior art forging and molding blank schematic diagram used.
Fig. 7 uses prior art forging and molding forging master to look schematic diagram.
Fig. 8 uses prior art forging and molding forging schematic top plan view.
The specific embodiment
Below describe embodiment of the present utility model in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In figure, upper hydraulic cylinder 1, shaping upper punch 2, the upper punch heart 21, upper punch 22, upper cavity die 3, speed ratio mechanism 4, lower cavity die 5, intermediate plate 6, shaping low punch 7, the low punch heart 71, low punch 72, lower hydraulic cylinder 8, downforce mechanism 9, lower platen 91, lower fill block 92, downforce piece 93, lower material returned pin 94, upward pressure mechanism 10, top board 101, upper fill block 102, upward pressure piece 103, upper material returned pin 104.
As shown in Figure 1, in this embodiment, extrusion molding apparatus in inaccessible, the shaping upper punch of existing locking device 2 and shaping low punch 7 all are set to Split type structure, be specially: being the upper punch heart 21 and upper punch 22 with shaping upper punch 2nd district, is the low punch heart 71 and low punch 72 with shaping low punch 7th district.
So, the upper punch heart 21 and the low punch heart 71 are as the extruding drift when closed die forming, and upper punch 22, as the part of upper cavity die 3, plays the effect of closed material when closed die forming, and upper punch 22 plays material returned effect with low punch 72 when the material returned.
In the present embodiment, upper hydraulic cylinder 1, pressing plate 101, fill block 102, pressure block 103, material returned pin 104, the upper punch heart 21 are fixed on below press ram, lower hydraulic cylinder 8, pressing plate 91, fill block 92, pressure block 93, material returned pin 94, the upper punch heart 71 are fixed on press bench, upper cavity die 3, upper punch 22 are connected as a single entity with the piston of upper fluid cylinder 1, lower cavity die 5, low punch 72 are connected as a single entity with lower hydraulic cylinder 8, intermediate plate 6 is connected as a single entity with lower cavity die 5, low punch 72, speed ratio mechanism 4 passes through the upper and lower base plate hinged of hinge seat, and with intermediate plate 6, contacts.
As shown in Figure 1 to 4, before extruding, when upper hydraulic cylinder 1, the upper punch heart 21, upper punch 22, pressing plate 101, fill block 102, pressure block 103, material returned pin 104, when upper cavity die 3 is in upper dead center position with press ram, the pressure oil of supplying with by hydraulic pump and accumulator makes respectively upper cavity die 3, upper punch 22 be in lower position, make lower cavity die 5, low punch 72, intermediate plate 6 be in upper limit position, at this moment, blank is placed in lower cavity die 5 and low punch 72, the formed counterdie impression of the low punch heart 71.
In extruding, press ram drives upper cavity die 3, the upper punch heart 21, upper punch 22 is descending, when contacting with lower cavity die 5, upper cavity die 3 forms the integral concave mould impression, when the slide block continuation is descending, upper cavity die 3, upper punch 22, lower cavity die 5, low punch 72 are in relative static conditions, and the upper punch heart 21, the low punch heart 71 produces subtends and moves, force blank generation plastic deformation to be full of the die thorax and form required forging, its matched moulds thrust is the back pressure oil generation by upper and lower hydraulic cylinder, and its pressure size is regulated by the oil-drain pipe overflow valve; Simultaneously because this extruding makes the material production plastic deformation for the upper punch heart 21 and the low punch heart 71 extruding endoporus, the crimp area is less, can increase the regulated quantity of press ram, make the forging profile be easy to control, prevent that blank excessively is full of impression and damages the mold tool.
After extruding; press ram is up; in drive, lower cavity die returns to upper limit position; on forcing press, knock-out mechanism promotion material returned pin 104 is descending at this moment; material returned pin 104 promotes upper punch 22; because the upper punch heart 21 is fixed by pressing plate 101, fill block 102, pressure block 103, so being pushed into shape Forging, upper punch 22 withdraws from the upper punch heart 21 and upper cavity die 3, forging is separated with impression.Stay lower impression Central Plains reason as forging as the same.
In sum, extrusion molding apparatus in the utility model obturation, be extruded into shape and make in closed die forming forging profile the endoporus that has been shaped in obturation, and in inaccessible, extrusion molding makes the blank segment length close with the forging segment length, profile is by not producing and relatively move, only have the extruding of blank heart section to produce plastic deformation, the defect that makes the forging profile reduce friction and produce, be improved forging quality.Because extrusion molding in inaccessible is extruding endoporus shunting shaping profile, the forming punch area is relatively little, is easier to controlled pressure machine ram travel, can prevent that blank filling overfill from causing mould to damage.
It should be noted that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (7)
1. the interior extrusion molding apparatus of obturation, comprise
Upper cavity die (3) and lower cavity die (5) in the ground configuration of the mutual subtend of above-below direction; With
The shaping upper punch (2) that is connected as a single entity with the piston of upper cavity die (3), upper hydraulic cylinder (1) and the shaping low punch (7) that is connected as a single entity with lower cavity die (5), lower hydraulic cylinder (8);
It is characterized in that:
Described shaping upper punch (2) is divided into the upper punch heart (21) and upper punch (22), and described shaping low punch (7) is divided into the low punch heart (71) and low punch (72).
2. extrusion molding apparatus in obturation as claimed in claim 1, it is characterized in that: in described obturation, extrusion molding apparatus also comprises upward pressure mechanism (10), described upward pressure mechanism (10) comprises top board (101), upper fill block (102) and upward pressure piece (103), and described upward pressure piece (103) is arranged at the top of described upper fill block (102).
3. extrusion molding apparatus in obturation as claimed in claim 1 or 2, it is characterized in that: described upward pressure mechanism (10) also comprises material returned pin (104).
4. extrusion molding apparatus in obturation as claimed in claim 2, it is characterized in that: it is inconsistent with described upward pressure piece (103) that the described upper punch heart (21) passes described upper fill block (102), and the described upper punch heart (21) can move in the same way along with the movement of described upward pressure piece (103).
5. extrusion molding apparatus in obturation as claimed in claim 1, it is characterized in that: in described obturation, extrusion molding apparatus also comprises downforce mechanism (9), described downforce mechanism (9) comprises lower platen (91), lower fill block (92) and downforce piece (93), and described downforce piece (93) is arranged at the bottom of described lower fill block (92).
6. extrusion molding apparatus in obturation as claimed in claim 5, it is characterized in that: described downforce mechanism (9) also comprises lower material returned pin (94).
7. extrusion molding apparatus in obturation as claimed in claim 5, it is characterized in that: it is inconsistent with described downforce piece (93) that the described low punch heart (71) passes described lower fill block (92), and the described low punch heart (71) can move in the same way along with the movement of described downforce piece (93).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201179611U CN203292405U (en) | 2013-03-14 | 2013-03-14 | Closed internal extrusion forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201179611U CN203292405U (en) | 2013-03-14 | 2013-03-14 | Closed internal extrusion forming device |
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| Publication Number | Publication Date |
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| CN203292405U true CN203292405U (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013201179611U Expired - Fee Related CN203292405U (en) | 2013-03-14 | 2013-03-14 | Closed internal extrusion forming device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128211A (en) * | 2013-03-14 | 2013-06-05 | 江苏森威集团飞达股份有限公司 | Blocked internal extrusion molding device and molding technology |
| CN104084440A (en) * | 2014-07-22 | 2014-10-08 | 株洲市文佳实业有限公司 | Forming device for plastic swaging forming of metal |
| CN104107841A (en) * | 2014-07-22 | 2014-10-22 | 株洲市文佳实业有限公司 | Device for molding by metal deformation and swaging |
| CN104226871A (en) * | 2014-07-22 | 2014-12-24 | 株洲市文佳实业有限公司 | Metal plastic swaging forming method |
| CN104511558A (en) * | 2013-12-14 | 2015-04-15 | 柳州市国顺机械制造有限公司 | Technological method for closed die forging of piston rod of loading machine |
| CN104772422A (en) * | 2014-01-15 | 2015-07-15 | 武藏精密工业株式会社 | Forging apparatus |
| CN104138917B (en) * | 2014-07-22 | 2016-03-23 | 株洲市文佳实业有限公司 | The crowded forging assembly of forging molding is squeezed for plastic deformation |
| CN108421947A (en) * | 2018-04-27 | 2018-08-21 | 江苏大洋精锻有限公司 | A kind of enclosed forge die |
-
2013
- 2013-03-14 CN CN2013201179611U patent/CN203292405U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128211A (en) * | 2013-03-14 | 2013-06-05 | 江苏森威集团飞达股份有限公司 | Blocked internal extrusion molding device and molding technology |
| CN104511558A (en) * | 2013-12-14 | 2015-04-15 | 柳州市国顺机械制造有限公司 | Technological method for closed die forging of piston rod of loading machine |
| CN104511558B (en) * | 2013-12-14 | 2017-06-23 | 柳州市国顺机械制造有限公司 | The process of loading machine piston rod closed die forging |
| CN104772422A (en) * | 2014-01-15 | 2015-07-15 | 武藏精密工业株式会社 | Forging apparatus |
| TWI623362B (en) * | 2014-01-15 | 2018-05-11 | 武藏精密工業股份有限公司 | Forging apparatus |
| CN104772422B (en) * | 2014-01-15 | 2020-05-22 | 武藏精密工业株式会社 | Forging device |
| CN104084440A (en) * | 2014-07-22 | 2014-10-08 | 株洲市文佳实业有限公司 | Forming device for plastic swaging forming of metal |
| CN104107841A (en) * | 2014-07-22 | 2014-10-22 | 株洲市文佳实业有限公司 | Device for molding by metal deformation and swaging |
| CN104226871A (en) * | 2014-07-22 | 2014-12-24 | 株洲市文佳实业有限公司 | Metal plastic swaging forming method |
| CN104138917B (en) * | 2014-07-22 | 2016-03-23 | 株洲市文佳实业有限公司 | The crowded forging assembly of forging molding is squeezed for plastic deformation |
| CN104107841B (en) * | 2014-07-22 | 2016-06-01 | 株洲市文佳实业有限公司 | Plastic Deformation squeezes the shaped device of forging molding |
| CN108421947A (en) * | 2018-04-27 | 2018-08-21 | 江苏大洋精锻有限公司 | A kind of enclosed forge die |
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| 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: 20131120 Termination date: 20190314 |