CN109332414B - Butterfly-shaped extrusion die for producing flat-wide thin-wall multi-cavity aluminum profile - Google Patents
Butterfly-shaped extrusion die for producing flat-wide thin-wall multi-cavity aluminum profile Download PDFInfo
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- CN109332414B CN109332414B CN201811149554.2A CN201811149554A CN109332414B CN 109332414 B CN109332414 B CN 109332414B CN 201811149554 A CN201811149554 A CN 201811149554A CN 109332414 B CN109332414 B CN 109332414B
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- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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Abstract
The invention discloses a butterfly-shaped extrusion die for producing a flat, wide, thin-wall and multi-cavity aluminum alloy profile, wherein a butterfly-shaped upper die is provided with a multi-stage arch-shaped arc surface diversion bridge, the radius of the arch-shaped diversion bridge is 150-200mm, the arch-shaped diversion bridge sinks 10-20mm along the end surface of the butterfly-shaped upper die, and a main diversion bridge at the central position sinks 10-15mm continuously for reducing the stress of the die in the extrusion process; the butterfly-shaped lower die is provided with two stages of welding chambers with butterfly-shaped profiles, the heights of the first-stage welding chamber and the second-stage welding chamber are respectively 15-25mm and 5-10mm, and a stop block can be added in the second-stage welding chamber to adjust the material flow rate and improve the welding quality. The method can produce flat-wide thin-wall multi-cavity aluminum profiles with good geometric shape and welding quality, effectively prolong the service life of the extrusion die and reduce the energy consumption of extrusion production.
Description
Technical Field
The invention relates to the technical field of aluminum profile production, in particular to a butterfly-shaped extrusion die for producing a flat-wide thin-wall multi-cavity aluminum profile.
Background
Along with the wider application field of extruded aluminum profiles, the aluminum profiles are developed towards large size, flat width, thin wall, multi-cavity and high precision. For flat, wide, thin-wall and multi-cavity aluminum profiles, the traditional split-flow combined die is adopted for production at present. However, because the extrusion aspect ratio, the profile width-thickness ratio and the wall thickness difference are large, the volume distribution of the material in the pre-forming process in the die cavity is difficult to control in the extrusion process, the uneven degree of extrusion deformation is very serious, the defects of profile such as twisting, wave, poor welding, wall thickness super-difference and the like are easily caused, and because the material flow resistance is large, the required breakthrough pressure is large, the extrusion die is easy to deform, destabilize, crack and even scrap, and the extrusion die can be put into normal use only through repeated die testing and die repairing. Therefore, the main problems of long die development period, short service life, low one-time die testing qualification rate, low profile yield and the like exist in the extrusion production of the flat, wide, thin-wall and multi-cavity aluminum profiles, the product quality and the production efficiency of the profiles are seriously influenced, and the production cost of enterprises is remarkably increased.
Butterfly die extrusion was proposed by the italian engineer Bergagna in the 90's of the 20 th century and has as its main structural feature the substitution of the traditional rectangular-edge shaped splitter bridges with arched splitter bridges and the rational arrangement of the splitter bridges on the die plane by positioning them in the correct way, thus improving the supply of metal to the outside and to the portion of the mantle under the bridge. At present, butterfly die extrusion is applied to profile extrusion with simple section shape, but a successful application case of the butterfly die in extrusion production of flat, wide and thin-wall multi-cavity aluminum alloy profiles is not found yet.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to provide a butterfly-shaped extrusion die for producing flat, wide and thin-wall multi-cavity aluminum alloy sections.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a butterfly-shaped extrusion die for producing flat, wide, thin-wall and multi-cavity aluminum alloy profiles comprises an upper die, a lower die and a spreading guide die, wherein the upper die is positioned between the lower die and the spreading guide die, the upper die is a butterfly-shaped upper die, a main diversion bridge and an arch-shaped diversion bridge are arranged on the butterfly-shaped upper die, the arch-shaped diversion bridges are arranged in parallel in a butterfly shape, and the main diversion bridge is arranged along the radial direction of the arch-shaped diversion bridges to divide the butterfly-shaped upper die into a plurality of diversion holes; the position of the arched shunt bridge is 10-20mm lower than the end surface of the butterfly-shaped upper die, the position of the main shunt bridge is 10-15mm lower than the end surface of the arched shunt bridge, and the radius of the arched shunt bridge is 150-200 mm.
The diversion bridge sinks 10-20mm along the end face of the butterfly-shaped upper die, the diversion bridge at the central position sinks 10-15mm continuously, the radius of the diversion bridge is generally 150-200mm, and the butterfly-shaped upper die diversion bridge sinks and is designed in a two-stage diversion mode, so that the integral distribution of metal is effectively improved, the material flow is more uniform, and the flow resistance is greatly reduced. The impact of the metal on the die is reduced, so that the overall stress of the die is reduced.
Preferably, the number of the arched shunting bridges is adjusted according to the cross-sectional shape of the profile.
Further preferably, the arched shunting bridges are divided into two groups, and the arched directions of the two groups of arched shunting bridges are opposite.
Preferably, the cross section of the die cavity of the widening diversion die is dumbbell-shaped and expands in a trumpet shape from the inlet to the outlet. Except that can reduce the whole pressure of mould, adjust the material velocity of flow, transfer the pressure that whole bore to the seaming indoor to guarantee its sufficient hydrostatic pressure, can also realize utilizing the purpose of little extruder production large cross section bar.
Preferably, the lower die is provided with a first-stage welding chamber and a second-stage welding chamber which are distributed in a step shape, the cross section area of the first-stage welding chamber is larger than that of the second-stage welding chamber, and when the lower die is used, the first-stage welding chamber is in contact with the outlet of the upper die.
Further preferably, the height of the primary welding chamber is 15-25mm, and the height of the secondary welding chamber is 5-10 mm.
Further preferably, the first-stage welding chamber and the second-stage welding chamber are both butterfly-shaped profile structures.
Still further preferably, a stopper is provided in the secondary welding chamber. The baffle block arranged in the second-stage welding chamber can adjust the overall flow rate of the metal material, and is beneficial to improving the welding quality.
Preferably, the upper die and the lower die are both in unequal-length working band structures, the length of each working band is 15-20mm, and a blocking angle is arranged at each working band.
Further preferably, the barrier angle is 1.5 ° to 2 °. The working band is provided with the blocking angle, so that the friction force of the aluminum bar is increased, the welding time is prolonged, and the welding quality is improved.
The invention has the beneficial effects that:
(1) the invention designs a wide diversion mold, the cross section of the mold cavity of the wide diversion mold is dumbbell-shaped and is flared and expanded forwards, and a large-section, flat, wide, thin-wall and multi-cavity aluminum profile can be produced by using a small extruder;
(2) the butterfly-shaped upper die is provided with a multi-stage arch-shaped arc surface shunt bridge, the radius of the arch-shaped shunt bridge is 150-200mm, the arch-shaped shunt bridge sinks 10-20mm along the end surface of the butterfly-shaped upper die, and the main shunt bridge at the central position sinks 10-15mm continuously to reduce the stress of the die in the extrusion process; the butterfly-shaped lower die is provided with two stages of welding chambers with butterfly-shaped profiles, the heights of the first-stage welding chamber and the second-stage welding chamber are respectively 15-25mm and 5-10mm, and a stop block can be added in the second-stage welding chamber to adjust the material flow rate and improve the welding quality. The method can produce flat-wide thin-wall multi-cavity aluminum profiles with good geometric shape and welding quality, effectively prolong the service life of the extrusion die and reduce the energy consumption of extrusion production.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic view of the overall structure of a butterfly extrusion die of the present invention;
FIG. 2 is a schematic structural view of a butterfly upper die of the present invention;
FIG. 3 is a schematic structural view of a butterfly lower die of the present invention;
FIG. 4 is a schematic structural diagram of a spreading guide mold according to the present invention;
FIG. 5 is a schematic view of the configuration of the interference angle of the present invention;
fig. 6 is an enlarged view of a portion a in fig. 5.
The welding device comprises a lower die 1, an upper die 2, a lower die 3, a spreading guide die 4, a first-stage welding chamber 5, a second-stage welding chamber 6, an arched shunting bridge 7, a main shunting bridge 8, a lower die blocking angle working belt 9 and an upper die blocking angle working belt.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1 and 2, a butterfly-shaped extrusion die for producing a flat, wide and thin-walled multi-cavity aluminum alloy profile comprises an upper die 2, a lower die 1 and a spreading guide die 3, wherein the upper die 2 is positioned between the lower die 1 and the spreading guide die 3, the upper die 2 is a butterfly-shaped upper die, a main shunt bridge 7 and an arch-shaped shunt bridge 6 are arranged on the butterfly-shaped upper die, the arch-shaped shunt bridges 6 are arranged in parallel in a butterfly shape, and the main shunt bridge 7 is arranged along the radial direction of the arch-shaped shunt bridge 6 to divide the butterfly-shaped upper die into a plurality of shunt holes; the position of the arched shunt bridge 6 sinks by 10-20mm relative to the end surface of the butterfly-shaped upper die, the position of the main shunt bridge 7 sinks by 10-15mm relative to the end surface of the arched shunt bridge 6, and the radius of the arched shunt bridge 6 is 150-200 mm. The number of the arched shunt bridges is 4, and can also be 5, 6, 8, 10 and the like.
The arched shunting bridges 6 are arranged in parallel in a butterfly shape, the arched shunting bridges 6 are divided into two groups, and the arched directions of the two groups of arched shunting bridges 6 are opposite and distributed in a butterfly shape.
As shown in fig. 4, the cross section of the cavity of the spreading guide die 3 is dumbbell-shaped, and flares from the inlet to the outlet. Except that can reduce the whole pressure of mould, adjust the material velocity of flow, transfer the pressure that whole bore to the seaming indoor to guarantee its sufficient hydrostatic pressure, can also realize utilizing the purpose of little extruder production large cross section bar.
As shown in fig. 3 and 5, a first-stage welding chamber 4 and a second-stage welding chamber 5 are designed in the lower die 1, the first-stage welding chamber 4 and the second-stage welding chamber 5 are distributed in a step shape, the cross-sectional area of the first-stage welding chamber 4 is larger than that of the second-stage welding chamber 5, when the die is used, the first-stage welding chamber 4 is in contact with an outlet of the upper die 2, and metal materials from the upper die are welded and then molded. The height of the first-stage welding chamber 4 is 15-25mm, the inner wall of the first-stage welding chamber is inclined, the first-stage welding chamber 4 is of a reducing structure from outside to inside, and the height of the second-stage welding chamber 5 is 5-10 mm. The first-stage welding chamber and the second-stage welding chamber are both butterfly-shaped outline structures.
The stop block can be arranged in the secondary welding chamber 5, so that the overall flow rate of the metal material can be adjusted, and the welding quality can be improved.
As shown in fig. 5 and 6, an upper die barrier angle working tape 9 is arranged in the upper die 2, a lower die barrier angle working tape 8 is arranged in the lower die 1, the length of the unequal-length working tape formed by the lower die barrier angle working tape 8 and the upper die barrier angle working tape 9 is 15-20mm, a barrier angle is arranged at the working tape, and the barrier angle is 1.5-2 degrees.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (1)
1. The utility model provides a butterfly extrusion die that is used for production of flat wide thin wall multicavity aluminum alloy ex-trusions which characterized in that: the upper die is positioned between the lower die and the spreading guide die, wherein the upper die is a butterfly-shaped upper die, a main diversion bridge and an arch-shaped diversion bridge are arranged on the butterfly-shaped upper die, the arch-shaped diversion bridges are arranged in parallel in a butterfly shape, and the main diversion bridges are arranged along the radial direction of the arch-shaped diversion bridges to divide the butterfly-shaped upper die into a plurality of diversion holes; the position of the arched shunt bridge is 10-20mm lower than the end surface of the butterfly-shaped upper die, the position of the main shunt bridge is 10-15mm lower than the end surface of the arched shunt bridge, and the radius of the arched shunt bridge is 150-200 mm; the lower die is provided with a first-stage welding chamber and a second-stage welding chamber which are distributed in a step shape, the cross section area of the first-stage welding chamber is larger than that of the second-stage welding chamber, and when the lower die is used, the first-stage welding chamber is in contact with the outlet of the upper die; the height of the first-stage welding chamber is 15-25mm, and the height of the second-stage welding chamber is 5-10 mm; the first-stage welding chamber and the second-stage welding chamber are both of butterfly-shaped outline structures; a stop block is arranged in the secondary welding chamber; the upper die and the lower die are both in unequal-length working band structures, the length of each working band is 15-20mm, and a blocking angle is arranged at each working band and is 1.5-2 degrees; the number of the arched shunting bridges is adjusted according to the cross section shape of the sectional material; the arch-shaped shunting bridges are divided into two groups, and the arch directions of the two groups of arch-shaped shunting bridges are opposite; the cross section of the cavity of the broadening diversion mold is dumbbell-shaped and expands in a trumpet shape from the inlet to the outlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811149554.2A CN109332414B (en) | 2018-09-29 | 2018-09-29 | Butterfly-shaped extrusion die for producing flat-wide thin-wall multi-cavity aluminum profile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811149554.2A CN109332414B (en) | 2018-09-29 | 2018-09-29 | Butterfly-shaped extrusion die for producing flat-wide thin-wall multi-cavity aluminum profile |
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| CN109332414A CN109332414A (en) | 2019-02-15 |
| CN109332414B true CN109332414B (en) | 2020-03-06 |
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| CN112692095A (en) * | 2020-12-07 | 2021-04-23 | 重庆友利森汽车科技有限公司 | Battery frame bottom plate extrusion die |
| CN114029353A (en) * | 2021-10-21 | 2022-02-11 | 山东华建铝业集团有限公司 | Thin-wall wide-width multi-cavity high-strength aluminum alloy plate, manufacturing method and extrusion die |
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| WO2011099868A1 (en) * | 2010-02-12 | 2011-08-18 | Norsk Hydro Asa | Modular extrusion die |
| CN103100572A (en) * | 2012-12-11 | 2013-05-15 | 龙口市丛林铝材有限公司 | Large-caliber aluminum alloy extruded tube die |
| CN203400951U (en) * | 2013-07-19 | 2014-01-22 | 辽源飞跃工模具有限公司 | Ultra-wide aluminum alloy board extruding mold |
| CN103678772B (en) * | 2013-11-13 | 2017-09-22 | 内蒙古工业大学 | A kind of method for numerical simulation for analyzing extrusion die Length discrepancy work band structure size |
| CN203991726U (en) * | 2014-07-17 | 2014-12-10 | 广州科技职业技术学院 | Aluminium alloy electric motivation shell extrusion die |
| CN204135099U (en) * | 2014-10-31 | 2015-02-04 | 广州科技职业技术学院 | The large square tube extrusion die of aluminium section bar thin-walled |
| CN204135100U (en) * | 2014-10-31 | 2015-02-04 | 广州科技职业技术学院 | Thin cylinder cylinder extrusion die |
| CN104400360A (en) * | 2014-12-12 | 2015-03-11 | 西南铝业（集团）有限责任公司 | Optimized I beam profile processing method |
| CN204486494U (en) * | 2015-03-26 | 2015-07-22 | 东南铝业有限公司 | Heavy in section Thin-walled Aluminum profile extrusion die |
| CN207308608U (en) * | 2017-10-18 | 2018-05-04 | 佛山市顺德区惠联模具科技有限公司 | A kind of industrial aluminum profile Compression Die |
| CN207899889U (en) * | 2018-02-01 | 2018-09-25 | 苏州市永利成模具制造有限公司 | A kind of butterfly bridge mold |
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