CN104070080A - Extrusion die for variable-cross-section aluminum alloy profiles - Google Patents
Extrusion die for variable-cross-section aluminum alloy profiles Download PDFInfo
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- CN104070080A CN104070080A CN201410327749.7A CN201410327749A CN104070080A CN 104070080 A CN104070080 A CN 104070080A CN 201410327749 A CN201410327749 A CN 201410327749A CN 104070080 A CN104070080 A CN 104070080A
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Abstract
The invention relates to an extrusion die for variable-cross-section aluminum alloy profiles. The extrusion die comprises a cavity body, a pressure applying device, a die core and a locking device, wherein the two ends of the cavity body are communicated, and a material extrusion cavity, a die core moving cavity, a forming cavity and a discharging cavity are formed in the cavity body in sequence from one end to the other end; the pressure applying device is slidingly arranged in the material extrusion cavity; the die core is slidingly arranged in the die core moving cavity, and a shunting hole is formed in the die core; a forming bulge which extends to the forming cavity and is used for being matched with the forming cavity is fixedly arranged on the die core; a plurality of forming sections are sequentially formed from one end, connected with the die core, of the forming bulge to the other end, the cross section shapes of the forming sections are the same, and the area is sequentially reduced; the locking device is used for positioning the die core. The extrusion die realizes production of closed aluminum alloy profiles and also effectively improves the quality of the aluminum alloy profiles.
Description
Technical field
The present invention relates to section bar manufacturing technology field, particularly a kind of variable cross-section aluminium alloy section extruding die tool.
Background technology
Aluminium alloy extrusions is the applied main materials of various product lightweights, yet the development along with technology, the aluminium alloy extrusions of variable cross-section has obtained application in increasing occasion, but current aluminium alloy extrusions extrusion equipment is mainly limited to the extruding of uiform section aluminium alloy extrusions, and for the extruding of variable cross-section aluminium alloy extrusions, the aluminium alloy extrusions that can only be limited to open-type, or can be only simple pipe or square tube section.
Variable cross-section extrusion technique from aluminium alloy extrusions, the variable cross-section of aluminium alloy extrusions pushes the method for main employing stage variable cross-section, when variable cross-section, need to shut down the mould lobe that removes piecemeal, add the mould that more heavy in section piecemeal mould lobe forms, but this kind of method is only applicable to extensive solid aluminum alloy extruding, such as the wing of aircraft etc.; The main method that adopts squeezing needle and extrusion die of pipe variable cross-section extruding, in recipient, penetrate elongated squeezing needle to extrusion die, the end of squeezing needle has needle point, mobile squeezing needle can squeeze out the pipe of different tube diameters, but because squeezing needle need to pass die length over half, thereby easily generation skew or the deformation in the process of extruding of elongated squeezing needle, thereby the pipe quality squeezing out is impacted.
Summary of the invention
The object of this invention is to provide a kind of variable cross-section aluminium alloy section extruding die tool, so that can produce up-to-standard variable cross-section aluminium alloy opening-closed sectional material.
For achieving the above object, variable cross-section aluminium alloy section extruding die tool provided by the invention, comprising:
The cavity that two ends connect, and described cavity is followed successively by material extrusion chamber, core rod mobile cavity, forming cavity and discharging chamber by one end to the other end;
Be slidably disposed on the device for exerting of described material extrusion chamber;
Be mounted slidably in described core rod mobile cavity, and offer the core rod of tap hole, on described core rod, be fixedly installed towards described forming cavity extension and the moulding projection for coordinating with described forming cavity, and it is identical that described moulding projection is followed successively by multistage shape of cross section by one end connected with described core rod to the other end, and the moulding section that reduces successively of area;
For locating the locking device of described core rod position.
Preferably, described cavity consists of the inner chamber of the recipient docking successively, upper die and lower die and pad mould.
Preferably, also comprise the driving assembly that drives described core slide.
Preferably, described driving assembly comprises:
Be fixedly installed on the piston cylinder on described pad mould;
Be connected in the push-plate on the piston rod of described piston cylinder;
One end and described core rod are connected, the connecting rod that the other end and described push-plate are connected.
Preferably, described driving assembly comprises:
Be fixedly installed on described pad mould, and the female thread barrel of tool;
The screw rod matching with described thread barrel;
Push-plate, is provided with on described push-plate for driving the motor of described bolt rotary, and the output of described motor is connected with described screw rod;
One end and described core rod are connected, the connecting rod that the other end and described push-plate are connected.
Preferably, in described moulding projection, between adjacent two described moulding sections, be also provided with transition zone, and described transition zone is the taper transition zone that cross section is identical with the shape of cross section of described moulding section.
Preferably, be provided with a plurality of described moulding projections on described core rod, the outward flange of a plurality of described moulding projections and the inward flange of described forming cavity form section bar wall passage, and the gap between adjacent two described moulding projections forms the gusset passage of section bar.
Preferably, described moulding projection comprises the moulding section that two joints are connected.
Preferably, be also provided with guide protrusions on the outer of described core rod, the inner surface of described core rod mobile cavity is also provided with the gathering sill with described guide protrusions adaptation, and described guide protrusions embeds in described gathering sill.
Preferably, between described material extrusion chamber and described core rod mobile cavity, be also provided with diversion cavity.
In the present invention, the operation principle of disclosed variable cross-section aluminium alloy section extruding die tool is:
The ingot casting of heating is extruded generation plastic deformation in material extrusion chamber, plastic aluminum alloy material after deforming will be pushed forward, and enter into core rod mobile cavity one side through the tap hole on core rod, core rod is by horizontally slipping, different sections in moulding projection are matched with forming cavity, different sections coordinate and will produce different gaps from forming cavity, thereby the cross section (being wall thickness) of the aluminium alloy extrusions produced is changed, behind the gap that plastic aluminum alloy consists of moulding projection and forming cavity, by discharging chamber, exported, thereby form the aluminium alloy extrusions of remaining silent.
And in the present invention, for the moulding projection matching with forming cavity, be arranged on slidably core rod, and close together between core rod and forming cavity, this just makes the length of moulding projection shorter, thereby the situation of effectively having avoided moulding projection that skew or deformation occur in the course of the work occurs, has improved the quality of finished product aluminium alloy extrusions.
Accompanying drawing explanation
The cross-sectional schematic that Fig. 1 is the variable cross-section aluminium alloy section extruding die tool that provides in the embodiment of the present invention;
The master that Fig. 2 is the mold insert structure that provides in the embodiment of the present invention looks schematic diagram;
The structural representation that Fig. 3 is the moulding projection that provides in the embodiment of the present invention.
Wherein, 1 is material extrusion chamber, and 2 is core rod mobile cavity, and 3 is forming cavity, 4 is device for exerting, and 5 is core rod, and 6 is recipient, and 7 is patrix, 8 is counterdie, and 9 is pad mould, and 10 is piston cylinder, and 11 is push-plate, 12 is connecting rod, and 13 is aluminium alloy extrusions, and 41 is pressure ram, and 42 is dummy block, 51 is guide protrusions, and 52 is connecting rod connecting hole, and 53 is moulding projection, and 54 is shunting bridge, 55 is tap hole, and 531 is moulding section, and 532 is transition zone.
The specific embodiment
Core of the present invention is to provide a kind of variable cross-section aluminium alloy section extruding die tool, so that can produce up-to-standard variable cross-section aluminium alloy opening-closed sectional material.
In order to make those skilled in the art person understand better the present invention program, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 1 to Fig. 3, the cross-sectional schematic that Fig. 1 is the variable cross-section aluminium alloy section extruding die tool that provides in the embodiment of the present invention, the master that Fig. 2 is the mold insert structure that provides in the embodiment of the present invention looks schematic diagram, the structural representation that Fig. 3 is the moulding projection that provides in the embodiment of the present invention.
The variable cross-section aluminium alloy section extruding die tool of rail vehicle provided by the present invention comprises cavity, device for exerting 4, core rod 5 and locking device, wherein the two ends of cavity connect, and cavity is followed successively by material extrusion chamber 1, core rod mobile cavity 2, forming cavity 3 and discharging chamber by one end to the other end, device for exerting 4 is slidably disposed in material extrusion chamber 1, and device for exerting 4 specifically comprises pressure ram 41 and dummy block 42, as shown in fig. 1, core rod 5 is slidably disposed in core rod mobile cavity 2, and on core rod 5, offer the tap hole 55 passing through for plastic aluminum alloy material, on core rod 5, be also fixedly installed the moulding projection 53 of extending and can coordinate with forming cavity 3 towards forming cavity 3, it is identical that moulding projection 53 is followed successively by multistage shape of cross section by one end connected with core rod 5 to the other end, and the moulding section 531 that area reduces successively, locking device is for locating the position of core rod 5.
Generally, moulding projection 53 is fixedly connected on core rod 5 by shunting bridge 54, as shown in Figure 2, and under pressure, shunting bridge 54 provides enough support strengths for moulding projection 53, and shunting bridge 54 coordinates the flow of plastic aluminum alloy material and flow velocity are allocated with tap hole 55.
Please refer to accompanying drawing 1, below the operation principle of disclosed variable cross-section aluminium alloy section extruding die tool in the present invention be introduced:
Aluminium alloy cast ingot through heating is pressed device 4 extruding generation plastic deformations in material extrusion chamber 1, plastic aluminum alloy material after deforming will be pressed device 4 and push ahead, and enter into core rod mobile cavity 2 one sides through the tap hole 55 on core rod 5, space between core rod mobile cavity 2 and forming cavity 3 forms seam chamber, the plastic aluminum alloy material of separating through tap hole 55 in this position will merge again, core rod 5 is by horizontally slipping, different sections in moulding projection 53 are matched with forming cavity 3, different sections coordinate and will produce different gaps from forming cavity 3, thereby the cross section (being wall thickness) of the aluminium alloy extrusions 13 produced is changed, behind the gap that plastic aluminum alloy consists of moulding projection 53 and forming cavity 3, by discharging chamber, exported, thereby form the aluminium alloy extrusions 13 of remaining silent.
In above-described embodiment, can find out, for the moulding projection 53 matching with forming cavity 3, be arranged on slidably core rod 5, and close together between core rod 5 and forming cavity 3, this just makes the length of moulding projection 53 shorter, thereby effectively avoided moulding projection 53 to be offset in the course of the work or the situation of deformation occurs, improved the quality of aluminium alloy extrusions 13.In the present invention, disclosed variable cross-section aluminium alloy section extruding die tool can be produced the high-quality aluminium alloy extrusions of remaining silent as can be seen here.
The aluminium alloy extrusions of remaining silent has a wide range of applications in the production of rail vehicle, and the aluminium alloy extrusions of remaining silent may have multiple section shape, as cylindrical shape, square-tube type, hexagon etc., when the aluminium alloy extrusions extruding of carrying out different cross section, only need the moulding projection 53 on core rod 5 and the shape of forming cavity 3 to carry out adaptability design.
Aluminium alloy extrusions 13 inside may be hollow-core construction, also may be sheet with rib structure, if the inside of aluminium alloy extrusions 13 is hollow-core construction, on core rod 5, the design of moulding projection 53 is comparatively simple comparatively speaking, the cross sectional shape of moulding projection 53 is consistent with the hollow section shape of aluminium alloy extrusions 13, and for the aluminium alloy extrusions 13 of sheet with rib structure, moulding projection 53 on core rod 5 just need to design a plurality of, a plurality of moulding projections 53 need interval to arrange, the inward flange of the outward flange of a plurality of moulding projections 53 and forming cavity 3 forms section bar wall passage, gap between adjacent two moulding projections 53 forms the gusset passage of section bar, please refer to Fig. 2, demonstrated in Figure 2 is moulding projection 53 and forming cavity 3 structures of square-tube type aluminium alloy extrusions, wherein in Fig. 2, dotted line represents the profile of forming cavity 3, between three moulding projections 53, leave gap, plastic aluminum alloy material will form the reinforcing plate structure of aluminium alloy extrusions 13 inside after being flow through by the gap between adjacent two moulding projections 53, certainly, if carry out the extruding of the aluminium alloy extrusions 13 of other cross sectional shapes, only need moulding projection 53 and forming cavity 3 to carry out adaptability design, moulding projection 53 number by determine finished product aluminium alloy extrusions 13 inner gusset quantity number.
Please refer to Fig. 1, cavity specifically consists of the recipient 6 docking successively, patrix 7, counterdie 8 and pad mould 9, in order further to optimize the technical scheme in above-described embodiment, between material extrusion chamber 1 and core rod mobile cavity 2, be also provided with diversion cavity, so that make plastic aluminum alloy material flow into as early as possible core rod 5 positions.
Further, driving assembly for driving core rod 5 to slide is also provided in the variable cross-section aluminium alloy section extruding die tool providing in the present embodiment, concrete driving assembly comprises: piston cylinder 10, push-plate 11 and connecting rod 12, please refer to Fig. 1, piston cylinder 10 is fixedly installed on pad mould 9, push-plate 11 is connected on the piston rod of piston cylinder 10, one end of connecting rod 12 and core rod 5 are connected, the other end and push-plate 11 are fixedly linked, the flexible of piston rod slides band moving-mould-core 5 in core rod mobile cavity 2, thereby realizing moulding sections different in moulding projection 53 coordinates with forming cavity 3.Piston cylinder 10 can be oil cylinder or cylinder, if oil cylinder or cylinder itself have locking function, also can no longer carry out the setting of core rod locking device.
In the embodiment of the present invention, also provide another to drive the way of realization of assembly, this driving assembly comprises: thread barrel, screw rod, push-plate 11 and connecting rod 12, wherein thread barrel is fixedly installed on pad mould 9, and in thread barrel, offer internal thread, screw rod matches with the screw thread in thread barrel, be provided with the motor rotating for drive screw, and the output of motor is connected on push-plate 11 with screw rod, one end of connecting rod 12 and core rod 5 are connected, and the other end and push-plate 11 are fixedly linked.
Drive screw rod is rotated in the rotation of motor, and screw rod will move axially in thread barrel, thereby drives push-plate 11 to move, and the motion of push-plate 11 will be delivered to core rod 5 by connecting rod 12, thereby realize the slip of core rod 5 in core rod mobile cavity 2.Certainly, if this driving assembly itself has locking function, also can no longer carry out the setting of core rod locking device.
Further, connecting rod 12 in above-described embodiment includes many, and many connecting rods 12 are all along circumferentially evenly the arranging of pad mould 9, to can make in process that core rod 5 moves circumferentially stress balance, avoid it to produce or distortion, guarantee the precision of aluminium alloy extrusions 13.
In actual production process; need in non-stop-machine situation, carry out the movement of core rod 5; for fear of section bar cross section, produce suddenly and change; in moulding projection 53 in the present embodiment; between adjacent two moulding sections 531, be also provided with transition zone 532, and transition zone 532 is the cross section taper transition zone consistent with the shape of cross section of moulding section 531.
The concrete Fig. 3 that please refer to, in Fig. 3, provided a kind of specific embodiment of the moulding projection with transition zone 532, when the aluminium alloy extrusions of the thin and middle wall thickness of production end walls, first make the moulding section 531 that cross section is larger match with forming cavity 3, when needs carry out variable cross-section, reduce extrusion speed, by core rod 5, drive the projection 53 that is shaped to move, transition zone 532 is matched with forming cavity 3, and then again recover normal extrusion speed, the last moulding section 531 that moves to gradually cross section minimum, the wall thickness of the aluminium alloy extrusions 13 of at this moment producing is maximum, when aluminium alloy extrusions 13 is expressed to the other end and needs wall attenuation, moulding projection 53 oppositely moves, make successively the moulding section 531 that transition zone 532 and cross section are larger match with forming cavity 3, this kind of moulding projection 53 this can avoid the cross section of aluminium alloy extrusions 13 to undergo mutation.
The axial dimension of moulding projection 53 is long will likely there is deformation in extrusion process, and for this reason, in the variable cross-section aluminium alloy section extruding die tool providing in the present embodiment, moulding projection 53 comprises the moulding section 531 that two joints are connected, as shown in Figure 3.
In order further to optimize the technical scheme in above-described embodiment, in the present embodiment, on the outer of core rod 5, be also provided with guide protrusions 51, as shown in Figure 2, be provided with the gathering sill with guide protrusions 51 adaptations on the inner surface of core rod mobile cavity 2, guide protrusions 51 embeds in gathering sills.Guide protrusions 51 and gathering sill coordinate the stability when effectively improving core rod 5 and move.
Be understandable that, this equipment is easily realized automation, by controller, controls the extrusion speed of device for exerting 4 and the actuation time that drives assembly.
Above variable cross-section aluminium alloy section extruding die tool provided by the present invention is described in detail.Applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (10)
1. a variable cross-section aluminium alloy section extruding die tool, is characterized in that, comprising:
The cavity that two ends connect, and described cavity is followed successively by material extrusion chamber (1), core rod mobile cavity (2), forming cavity (3) and discharging chamber by one end to the other end;
Be slidably disposed on the device for exerting (4) of described material extrusion chamber (1);
Be mounted slidably in described core rod mobile cavity (2), and offer the core rod (5) of tap hole (55), on described core rod (5), be fixedly installed towards described forming cavity (3) extension and the moulding projection (53) for coordinating with described forming cavity (3), and it is identical that described moulding projection (53) is followed successively by multistage shape of cross section by one end connected with described core rod (5) to the other end, and the moulding section (531) that reduces successively of area;
Be used for locating the locking device of described core rod (5) position.
2. variable cross-section aluminium alloy section extruding die tool according to claim 1, is characterized in that, described cavity consists of the inner chamber of the recipient docking successively (6), patrix (7), counterdie (8) and pad mould (9).
3. variable cross-section aluminium alloy section extruding die tool according to claim 2, is characterized in that, also comprises the driving assembly that drives described core rod (5) to slide.
4. variable cross-section aluminium alloy section extruding die tool according to claim 3, is characterized in that, described driving assembly comprises:
Be fixedly installed on the piston cylinder (10) on described pad mould (9);
Be connected in the push-plate (11) on the piston rod of described piston cylinder (10);
One end and described core rod (10) are connected, the connecting rod (12) that the other end and described push-plate (11) are connected.
5. variable cross-section aluminium alloy section extruding die tool according to claim 3, is characterized in that, described driving assembly comprises:
Be fixedly installed on described pad mould (9) upper, and the female thread barrel of tool;
The screw rod matching with described thread barrel;
Push-plate (11), is provided with for driving the motor of described bolt rotary on described push-plate (11), and the output of described motor is connected with described screw rod;
One end and described core rod (5) are connected, the connecting rod (12) that the other end and described push-plate (11) are connected.
6. variable cross-section aluminium alloy section extruding die tool according to claim 1, it is characterized in that, in described moulding projection (53), between adjacent two described moulding sections (531), be also provided with transition zone (532), and described transition zone (532) is the taper transition zone that cross section is identical with the shape of cross section of described moulding section (531).
7. variable cross-section aluminium alloy section extruding die tool according to claim 6, it is characterized in that, on described core rod (5), be provided with a plurality of described moulding projections (53), a plurality of described moulding projection outward flanges of (53) and the inward flange of described forming cavity (3) form section bar wall passage, and the gap between adjacent two described moulding projections (53) forms the gusset passage of section bar.
8. variable cross-section aluminium alloy section extruding die tool according to claim 6, is characterized in that, described moulding projection (53) comprises the moulding section (531) that two joints are connected.
9. according to the variable cross-section aluminium alloy section extruding die tool described in claim 1-8 any one, it is characterized in that, on the outer of described core rod (5), be also provided with guide protrusions (51), the inner surface of described core rod mobile cavity (2) is also provided with the gathering sill adaptive with described guide protrusions (51), and described guide protrusions (51) embeds in described gathering sill.
10. variable cross-section aluminium alloy section extruding die tool according to claim 1, is characterised in that, between described material extrusion chamber (1) and described core rod mobile cavity (2), is also provided with diversion cavity.
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| CN201410327749.7A CN104070080B (en) | 2014-07-10 | 2014-07-10 | A kind of variable cross-section aluminium alloy section extruding die tool |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104607487A (en) * | 2014-12-10 | 2015-05-13 | 中国兵器工业第五九研究所 | Extruding method for two-dimension function-variation continuous variable-cross-section profile |
| CN106216420A (en) * | 2016-07-27 | 2016-12-14 | 东莞市闻誉实业有限公司 | Alloy product extrusion molding apparatus |
| CN107716581A (en) * | 2017-11-08 | 2018-02-23 | 安徽盛达前亮铝业有限公司 | A kind of variable cross-section aluminium alloy section extruding die tool |
| CN108856329A (en) * | 2018-06-25 | 2018-11-23 | 安徽省金兰金盈铝业有限公司 | The split type easy fractionation extrusion die of aluminum profile multistage |
| CN109351794A (en) * | 2018-12-11 | 2019-02-19 | 湖南千源铝业有限公司 | A kind of extrusion forming device for aluminium alloy extrusions |
| CN111604384A (en) * | 2020-05-13 | 2020-09-01 | 沈阳航空航天大学 | Preparation device and method for stage continuous extrusion gradient variable-section aluminum alloy section |
| CN112496323A (en) * | 2020-11-16 | 2021-03-16 | 安徽寒锐新材料有限公司 | Cobalt mud extrusion mechanism and cobalt powder processing system |
| CN112792150A (en) * | 2020-12-23 | 2021-05-14 | 东北轻合金有限责任公司 | Extrusion method of 7150 alloy profile |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104607487B (en) * | 2014-12-10 | 2017-03-29 | 中国兵器工业第五九研究所 | A kind of two-dimentional letter becomes continuous variable cross section profile extrusion method |
| CN104607487A (en) * | 2014-12-10 | 2015-05-13 | 中国兵器工业第五九研究所 | Extruding method for two-dimension function-variation continuous variable-cross-section profile |
| CN106216420A (en) * | 2016-07-27 | 2016-12-14 | 东莞市闻誉实业有限公司 | Alloy product extrusion molding apparatus |
| CN106216420B (en) * | 2016-07-27 | 2018-01-30 | 东莞市闻誉实业有限公司 | Alloy product extrusion molding apparatus |
| CN107716581A (en) * | 2017-11-08 | 2018-02-23 | 安徽盛达前亮铝业有限公司 | A kind of variable cross-section aluminium alloy section extruding die tool |
| CN108856329B (en) * | 2018-06-25 | 2020-03-27 | 安徽省金兰金盈铝业有限公司 | Multi-section split type easy-to-split extrusion die for aluminum profile |
| CN108856329A (en) * | 2018-06-25 | 2018-11-23 | 安徽省金兰金盈铝业有限公司 | The split type easy fractionation extrusion die of aluminum profile multistage |
| CN109351794A (en) * | 2018-12-11 | 2019-02-19 | 湖南千源铝业有限公司 | A kind of extrusion forming device for aluminium alloy extrusions |
| CN111604384A (en) * | 2020-05-13 | 2020-09-01 | 沈阳航空航天大学 | Preparation device and method for stage continuous extrusion gradient variable-section aluminum alloy section |
| CN112496323A (en) * | 2020-11-16 | 2021-03-16 | 安徽寒锐新材料有限公司 | Cobalt mud extrusion mechanism and cobalt powder processing system |
| CN112496323B (en) * | 2020-11-16 | 2022-11-11 | 安徽寒锐新材料有限公司 | Cobalt mud extrusion mechanism and cobalt powder processing system |
| CN112792150A (en) * | 2020-12-23 | 2021-05-14 | 东北轻合金有限责任公司 | Extrusion method of 7150 alloy profile |
| CN112792150B (en) * | 2020-12-23 | 2023-04-07 | 东北轻合金有限责任公司 | Extrusion method of 7150 alloy profile |
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