CN203209462U - Seamless extrusion die for large-diameter aluminium alloy tube - Google Patents
Seamless extrusion die for large-diameter aluminium alloy tube Download PDFInfo
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- CN203209462U CN203209462U CN 201320091605 CN201320091605U CN203209462U CN 203209462 U CN203209462 U CN 203209462U CN 201320091605 CN201320091605 CN 201320091605 CN 201320091605 U CN201320091605 U CN 201320091605U CN 203209462 U CN203209462 U CN 203209462U
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- aluminium alloy
- extrusion die
- fusion portion
- shunting bridge
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Abstract
The utility model provides a seamless extrusion die for a large-diameter aluminium alloy tube. The seamless extrusion die comprises a terrace die body which is mounted on a concave die, wherein a flow dividing bridge communicated with a feeding hole is arranged on the terrace die body; a fixed-diameter tape is arranged at the front end of the flow dividing bridge; a fusion part for materials returning and gathering is arranged between the flow dividing bridge and the fixed-diameter tape; a predetermined height is defined from the bottom of the fusion part and the surface of the fixed-diameter tape so that aluminium materials which are hot-melted at high temperature are extruded and molded into an aluminium tube through a cavity formed by the terrace die fixed-diameter tape and the concave die fixed-diameter tape closed as walls after being welded together again in the flow-back process at the fusion part; with the fusion part, space is provided for the flowing aluminium metal to flow back so as to realize secondary welding together; therefore, output of seamless tubes is realized; and simultaneously, the fusion part can be formed on the previous die so that the die manufacturing cost can be effectively saved.
Description
Technical field
The utility model relates to the making mould applications, relates in particular to a kind of seamless extrusion die of big caliber aluminium alloy pipe that aluminium section bar is squeezed into seamless tube body.
Background technology
For the factory that produces parts or accessory, mould is taken on an important responsibility, traditional mold making technology is to import China in the eighties in 20th century into by Germany and Japan, known extruding die for aluminum shaped material is referring to Fig. 1, a kind of diffluence combination die tool that comprises die 1 and punch 2, die has seam shaping area 11 and discharging opening 12 as the moulding discharging part of extrusion metal.Punch 2 is as the feeding end of extrusion metal, be provided with feeding mouth 21, seam district 22, die cavity discharging opening 12, feeding mouth 21 is provided with shunting bridge 24, after making aluminium bar enter into seam district 22 from feeding mouth 21, the mobile aluminum metal of each tap hole input flows into seam district 22 and converges, directly go into mold cavity forming district 11, extrude from discharging opening 12 at last.The aluminium pipe material that this traditional metal flow seam designing technique is produced, shunt the seam bit line place of bridge 24 at each bar because of metal flow blind area under the bridge, cause that the metal structure of blind area loosens in the zone that flings at feeding mouth 21 places under the bridge, just there is the seam line in the aluminum pipe of extruding, the quantity of the shunting bridge 24 of this type of mould design equals seam line quantity, especially the extrusion ratio coefficient of aluminum products is lower than at 50 o'clock, and the metal flow resistance is little, fusion is insufficient, and it is very obvious to be directed at the seam line.The result is that tube wall can not be tightly connected, and has seriously limited the application of tubing.
Summary of the invention
The utility model provides a kind of big caliber aluminium alloy pipe seamless extrusion die, and its main purpose is to provide a kind of aluminium mould that can produce the solderless joint close, the seam seam problem that produces when easily solving the big caliber aluminum pipe of traditional mode of production.
Therefore, the utility model comprises the body of punch that is installed on the die, and described body of punch is provided with the shunting bridge that is communicated with charging aperture, and the front end of shunting bridge is provided with calibrating strap, is provided with the secondary fusion portion that converges for for feed back between described shunting bridge and the calibrating strap.
The circumferential arrangement structure that described shunting bridge is the even number bar, or be the circumferential arrangement structure of odd number bar, being formed for transmitting the tap hole of material between shunting bridge and the shunting bridge, described tap hole connects fusion portion.
Described tap hole is that incline plane type connects fusion portion, and perhaps the mode with plane or cambered surface connects fusion portion.
Fusion portion in the described punch is provided with right angle or the excessive backflow position of circular arc, forms being connected of tap hole and calibrating strap by this position of refluxing.
Described backflow position is the excessive choked flow platform structure of right angle or circular arc.
The bottom, backflow position of described fusion portion to the height of described calibrating strap is 3～30 millimeters.
The beneficial effects of the utility model are to shunt the backflow position that is provided with between bridge and the described calibrating strap for converge effect for the material secondary, this punch seam portion is provided with the height of setting to punch calibrating strap surface, making is refluxed in this fusion portion through aluminium that elevated temperature heat is melted forms secondary after steric hindrance hinders and fuses, recross calibrating strap and export with the aluminum pipe of calibrating strap equivalent diameter and end, by this fusion portion aluminium is had living space and carry out the secondary seam, realize the output of seamless tubular goods, simultaneously, this fusion portion can process at original mould, effectively saves the molding cost.
Description of drawings
Fig. 1 is not for establishing the schematic diagram of fusion portion in the traditional moulds.
Fig. 2 is stereogram of the present utility model.
Fig. 3 is the plan view of Fig. 2.
Fig. 4 is the utility model when work, aluminium flow to schematic diagram.
The specific embodiment
The utility model will be further described below in conjunction with accompanying drawing, as Fig. 2, Fig. 3, shown in Figure 4, the utility model comprises the die body 1 that is installed on the die, described die body 1 is provided with the shunting bridge 2 that is communicated with charging aperture, the front end of shunting bridge 2 is provided with calibrating strap 3, be provided with the fusion portion 4 that converges for for feed back between described shunting bridge 2 and the calibrating strap 3,41 bottoms, backflow position of described fusion portion 4 to the height A of described calibrating strap 3 is 3～30 millimeters and for convenience the heat of aluminium is melted, described shunting bridge 2 is the circumferential arrangement structure of even number bar, it perhaps is the circumferential arrangement structure of odd number bar, be formed for transmitting the tap hole 21 of material between shunting bridge 2 and the shunting bridge 2, the connection fusion portion 4 that this tap hole 21 is high tapered plane mode, perhaps the mode with plane or cambered surface connects fusion portion 4.Described calibrating strap 3 is the parts for restriction aluminum pipe diameter.
Further, described fusion portion 4 is provided with the backflow position 41 of circular surface, form being connected of big caliber aluminium alloy tap hole 21 and calibrating strap 3 by this position 41 of refluxing, described backflow position 41 be the excessive choked flow platform structure of right angle or circular arc, allows aluminum metal reflux to reach secondary merge the purpose that the elimination seam is stitched.And according to the circular configuration of die body 1, described backflow position 41 is set to the circumferential structure, makes heat melt into liquid aluminium and converges in fusion portion 4, and circumferential ring is around calibrating strap 3 outputs again.
And described die body 1 can be processed or repair and make fusion portion 4 former die body, effectively reduces the molding cost.
Above-mentioned specific embodiment only is the utility model effect specific embodiment preferably, and all or big caliber aluminium alloy pipe seamless extrusion dies of being equal to identical with this structure are all in the application's protection domain.
Claims (5)
1. one kind big seamless extrusion die of caliber aluminium alloy pipe, it comprises the body of punch (1) that is installed on the die, described body of punch (1) is provided with the shunting bridge (2) that is communicated with charging aperture, the front end of shunting bridge (2) is provided with calibrating strap (3), it is characterized in that: be provided with the secondary fusion portion (4) that converges for for feed back between described shunting bridge (2) and the calibrating strap (3).
2. the seamless extrusion die of big caliber aluminium alloy pipe according to claim 1, it is characterized in that: described shunting bridge (2) is the circumferential arrangement structure of even number bar, or be the circumferential arrangement structure of odd number bar, be formed for transmitting the tap hole (21) of material between shunting bridge (2) and the shunting bridge (2), described tap hole (21) is defeated expects to fusion portion (4).
3. the seamless extrusion die of big caliber aluminium alloy pipe according to claim 2 is characterized in that: described tap hole (21) is that incline plane type connects fusion portion (4), and perhaps the mode with plane or cambered surface connects fusion portion (4).
4. the seamless extrusion die of big caliber aluminium alloy pipe according to claim 3, it is characterized in that: described fusion portion (4) is provided with right angle or the excessive backflow position (41) of circular arc, and this backflow position (41) is positioned at position between tap hole (21) and the calibrating strap (3).
5. the seamless extrusion die of big caliber aluminium alloy pipe according to claim 1 is characterized in that: the bottom, backflow position (41) of described fusion portion (4) to the height of described calibrating strap (3) is 3～30 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091605 CN203209462U (en) | 2013-02-28 | 2013-02-28 | Seamless extrusion die for large-diameter aluminium alloy tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091605 CN203209462U (en) | 2013-02-28 | 2013-02-28 | Seamless extrusion die for large-diameter aluminium alloy tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203209462U true CN203209462U (en) | 2013-09-25 |
Family
ID=49199033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320091605 Expired - Fee Related CN203209462U (en) | 2013-02-28 | 2013-02-28 | Seamless extrusion die for large-diameter aluminium alloy tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203209462U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424186A (en) * | 2016-07-20 | 2017-02-22 | 仪征海天铝业有限公司 | Distributary combined hot-extrusion die |
-
2013
- 2013-02-28 CN CN 201320091605 patent/CN203209462U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424186A (en) * | 2016-07-20 | 2017-02-22 | 仪征海天铝业有限公司 | Distributary combined hot-extrusion die |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20190228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |