CN209716440U - Seven line aluminium alloy smallclothes of one kind and its die casting - Google Patents

Abstract

The utility model discloses a kind of seven line aluminium alloy smallclothes and its die castings, shunt the connection of channel type chamber between mainstream channel type chamber and primary cavity；It is provided in rear mold and squeezes pouch-type chamber, primary cavity connection is squeezing pouch-type chamber and shunting between channel type chamber, by the cylinder being arranged on die casting, in conjunction with the accumulator pressure of horizontal type cold-chamber die casting, carries out delay extruding to extruding pouch-type chamber in press casting procedure；Pouch-type chamber is squeezed due to using, in conjunction with delay fashion of extrusion, not refilling when pressure maintaining, and the filler not yet solidified completely in primary cavity is squeezed in volume by the extruding of mold packet, so that its core tissue and structure are finer and close, thus the aluminium alloy smallclothes that die casting goes out avoid and short texture occur in the thicker core position of wall thickness, and will not occur local cracks, crackle and air porous expanded, empty, the defects of shrinking after Post isothermal treatment；Aluminium alloy smallclothes after heat treatment are really than using the strength of materials of traditional die casting raw material much higher.

Description

Seven line aluminium alloy smallclothes of one kind and its die casting

Technical field

The utility model relates to seven line aluminium alloys pressure smallclothes and its processing equipment fields, more particularly to one kind seven is aluminium Alloy smallclothes and its die casting.

Background technique

Currently, in smart phone and its accessory in the form of 3D existing for aluminum alloy junction component, mostly by aluminium alloy punching press, The methods of aluminium forging and stamping, aluminium die casting and full CNC processing manufacture.

Aluminium alloy Sheet Metal Forming Technology is mainly used for the identical product of most of thickness, it is difficult to make the different product of thickness；And It is generally used for thin pieces production, is not suitable for the structure for having higher-strength demand.

The process of aluminium Forging Technology is longer, needs multiple tracks forging die, after the completion of per pass forging and stamping, will be heat-treated to eliminate Residual stress influences, and the production cycle is longer, higher cost, implements more difficulty for the structure of some complexity.

The scheme of full CNC processing, raw material expend greatly, and the process-cycle is long, and big to device requirement, the production cost is very high.

And common aluminium die-casting process, dedicated die casting raw material need to be used, still, the ingredient of die casting raw material determines material Intensity, it is difficult to meet the structure for having higher-strength demand.

By taking Fig. 1 and aluminium alloy smallclothes shown in Fig. 2 as an example, Fig. 1 is that certain aluminium alloy smallclothes embodiment is put in the prior art Big perspective view, Fig. 2 are the longitudinal sectional views of prior art Fig. 1；The aluminium alloy smallclothes belong to phone structural, and have higher strong Degree requires.

It can be seen from the figure that the domed structure in the middle part of the aluminium alloy smallclothes, and change along longitudinal direction with transverse thickness All larger, the wall thickness at the alar part d and e of two sides is relatively thin, and the wall thickness at a and b two of core along longitudinal direction is relatively thick, And the wall thickness at c is relatively thin；Therefore not only shape and structure is complicated for the product, but also the problem that many places are different there are wall thickness, There are also the demands of higher-strength for the product simultaneously.

Obviously, traditional die casting is easy short texture occur in the thicker position of product core especially wall thickness, and Occur after the heat treatment it is air porous expanded, locally occur crack, crackle and cavity, shrink the defects of, lead to the entirety of product Intensity is decreased obviously.

Therefore, the prior art still has much room for improvement and develops.

Utility model content

In order to solve the above technical problems, the utility model provides a kind of die casting of seven line aluminium alloy smallclothes, make Aluminium alloy smallclothes are higher than using the strength of materials of traditional die casting raw material, and can avoid structure occur in the thicker core position of wall thickness It is loose, it is conducive to Post isothermal treatment.

Meanwhile the utility model also provides a kind of seven line aluminium alloy smallclothes, cored structure is fine and close, and higher integral strength, and Heat treatment after be not in local cracks, crackle and it is air porous expanded, empty, shrink the defects of.

The technical solution of the utility model is as follows: a kind of die casting of seven line aluminium alloy smallclothes, including preceding mould and rear mold, For forming seven line aluminium alloy smallclothes of multiple wall unevennesses, it is provided in the rear mold multiple small for forming seven line aluminium alloys The primary cavity of part, and it is provided with coupled logical shunting channel type chamber and mainstream channel type chamber, the mainstream channel type chamber and setting exist Material head type chamber on preceding mould is connected, and the shunting channel type chamber connection is between mainstream channel type chamber and primary cavity；Wherein: described It is provided in rear mold and squeezes pouch-type chamber, the primary cavity connection is in the extruding pouch-type chamber and shunts between channel type chamber, and by setting The cylinder on die casting is set, in conjunction with the accumulator pressure of horizontal type cold-chamber die casting, during die casting, to the extruding Pouch-type chamber carries out delay extruding.

The die casting of the seven line aluminium alloy smallclothes, in which: laterally arrange between multiple primary cavities, and its arrangement side It is perpendicular to the flow direction total with die-cast aluminum alloy material.

The die casting of the seven line aluminium alloy smallclothes, in which: the single volume for squeezing pouch-type chamber is greater than single principal mode The volume of chamber, and the single volume for squeezing pouch-type chamber is less than the volume of all primary cavities communicated therewith.

The die casting of the seven line aluminium alloy smallclothes, in which: be provided on the die casting and vacuumized for connecting The wave air discharge duct of equipment, the extruding pouch-type chamber connection is between primary cavity and wave air discharge duct.

The die casting of the seven line aluminium alloy smallclothes, in which: the single pouch-type chamber that squeezes is connected with wave air discharge duct Logical grate flow channel number, greater than the primary cavity number being connected to the extruding pouch-type chamber.

The die casting of the seven line aluminium alloy smallclothes, in which: connect between the shunting channel type chamber and single primary cavity The cross-sectional area for meeting place, greater than the cross-sectional area of junction between single primary cavity and extruding pouch-type chamber；And single primary cavity with The cross-sectional area for squeezing junction between pouch-type chamber, greater than grate flow channel single between extruding pouch-type chamber and wave air discharge duct Cross-sectional area.

The die casting of the seven line aluminium alloy smallclothes, in which: the shunting channel type chamber is connected with mainstream channel type chamber It and is in flat herringbone.

The die casting of the seven line aluminium alloy smallclothes, in which: the side shunted on channel type chamber far from primary cavity It is provided with process area, and is provided with punching location hole on the process area.

The die casting of the seven line aluminium alloy smallclothes, in which: the end for shunting channel type chamber is provided with cinder ladle hole, Cinder ladle hole side wall is in a circular table shape, and bottom is in arc surfaced；The shunting channel type chamber rounding off and tangentially connected cinder ladle hole.

A kind of seven line aluminium alloy smallclothes, the different structure of wall thickness at least two, in which: using seven line aluminium alloys as former material Material, via the die casting die cast of the seven line aluminium alloys smallclothes described in any item among the above.

A kind of seven line aluminium alloys smallclothes and its die casting provided by the utility model squeeze pouch-type due to using Chamber, in conjunction with delay fashion of extrusion, not refilling when pressure maintaining, and by the extruding packet of mold to not yet being solidified completely in primary cavity Filler is squeezed in volume, so that its core tissue and structure are finer and close, the aluminium alloy smallclothes that thus die casting goes out are avoided There is short texture in wall thickness thicker core position, and will not occur after Post isothermal treatment local cracks, crackle with And it is air porous expanded, empty, shrink the defects of；By actual measurement, the aluminium alloy smallclothes after being heat-treated are really than using traditional pressure The strength of materials for casting raw material is much higher.

Detailed description of the invention

Attached drawing described here is only used for task of explanation, and is not intended to limit in any way disclosed by the utility model Range；Shape and proportional sizes of each component in figure etc. are only schematical, are used to help the understanding to the utility model, and Non- is the specific shape and proportional sizes for limiting each component of the utility model；Religion of the those skilled in the art in the utility model It leads down, various possible shapes and proportional sizes can be selected to implement the utility model as the case may be.

Fig. 1 is the amplification stereogram of certain aluminium alloy smallclothes embodiment in the prior art；

Fig. 2 is the longitudinal sectional view of prior art Fig. 1；

Fig. 3 is perspective view of the seven line aluminium alloy smallclothes die casting embodiment of the utility model under molding state；

Fig. 4 is the perspective view at visual angle on the inside of mould before the utility model Fig. 3 is seen under die opening state；

Fig. 5 is the perspective view that the utility model Fig. 3 sees visual angle on the inside of rear mold under die opening state；

Fig. 6 is perspective view of the rear mold under laid-flat status in the utility model Fig. 5；

Fig. 7 is the enlarged drawing in the utility model Fig. 6 at the A of part；

Fig. 8 is the amplification stereogram that seven line aluminium alloy smallclothes embodiment one of the utility model goes out four die-casting blanks；

Fig. 3 each label into Fig. 8: preceding mould 100, rear mold 200, mainstream channel type chamber 220, shunts channel type chamber at material head type chamber 110 230, product primary cavity 240, extruding pouch-type chamber 250, exhaust stream channel type chamber 260, the board-like air discharge duct 270 of washboard, technique bench-type chamber 280, positioning column 281, cinder ladle hole 290, cylinder 300, material head 410, sprue 420, runner 430, product blank 440, extruding Packet 450, grate flow channel 460, the board-like exhaust block 470 of washboard, process area 480, punching location hole 481, cinder ladle 490.

Specific embodiment

Below with reference to attached drawing, specific embodiment of the present utility model and embodiment are described in detail, it is described Specific embodiment only to explain the utility model, be not intended to limit specific embodiment of the present utility model.

Seven line aluminium alloy raw material used in seven line aluminium alloy smallclothes die casting of the utility model refer to model The seven line aluminium alloy raw material of 7K03, the non-AL component and its weight percent content for being included have: Zn4.90 ~ 5.10%, Mg1.75~1.85%、Fe0.050~0.085%、Cu0.025~0.055%、Zr0.03~0.05%、Si≤0.05%、Mn≤0.02%、 Cr≤0.02%,Ti≤0.025%,V≤0.02%,Ga≤0.02%,Sn≤0.02%；Not only it had been able to satisfy the mobility requirement of die casting, but also The strength of materials of die casting can be effectively improved.

Zn-ef ficiency is individually added into aluminium, extremely limited to the raising of intensity of aluminum alloy under deformation condition, is existed simultaneously and is answered The tendency of power corrosion cracking.And Zn-ef ficiency and magnesium elements are added simultaneously in aluminium, hardening constituent Mg/Zn2 is formed, aluminium alloy is generated Apparent invigoration effect；The content of Mg/Zn2 from 0.5% be increased to 12% when, tensile strength and yield strength can be obviously increased；Magnesium The content of element is more than in extra super duralumin alloy needed for forming Mg/Zn2 phase, and the ratio of Zn-ef ficiency and magnesium elements is controlled 2.7 or so When, stress corrosion cracking drag is maximum.Copper is such as added on the basis of Al-Zn-Mg, forms Al-Zn-Mg-Cu system alloy, Strengthening effect is maximum in all aluminium alloys.

It is preferred that wherein total amount≤0.03% of element M n and Cr；Single content≤0.02% of other elements, and other Total content≤0.10% of element, to guarantee the heat treatment performance in die casting later period.

For example, being aluminium ingot by the seven of the model 7K03 of TaiWan, China fringe high-tech limited liability company production, with the public affairs It, should by Spark OES spectroscope practical measurement for the seven of the T17060702 batch of 2017/06/07 production of department are aluminium ingot Batch seven is the non-AL component that aluminium ingot is included and its weight percent is: Zn4.99%, Mg1.84%, Fe0.065%, Cu0.038%、Zr0.031%、Si0.033%、Mn0.003%、Cr0.001%、Ti0.021%、V0.005%、Ga0.015%、 Sn0.001%, Mn+Cr total amount 0.004%, the single content of other elements is 0.015%, and the total content of other elements is 0.021%。

This seven is that the strength of materials of aluminium ingot will be apparently higher than traditional dedicated die casting raw material, the ratio of Zn-ef ficiency and magnesium elements It is 2.712, can satisfy the structure for having higher-strength demand in smart phone and its accessory.

As shown in Fig. 3, Fig. 4 and Fig. 5, Fig. 3 is that seven line aluminium alloy smallclothes die casting embodiment of the utility model is molding Perspective view under state, Fig. 4 are the perspective views at visual angle on the inside of mould before the utility model Fig. 3 is seen under die opening state, and Fig. 5 is this reality The perspective view at visual angle on the inside of rear mold is seen under die opening state with novel Fig. 3；Seven systems of wall unevenness similar to Figure 1 for die casting Aluminium alloy smallclothes, the die casting include the preceding mould 100 and rear mold 200 for forming multiple seven line aluminium alloys smallclothes；The die casting Mold use is on horizontal type cold-chamber die casting, by taking the horizontal type cold-chamber die casting of 3300KN mold clamping force as an example, used accumulator Pressure 160bar, punch diameter 50mm expect 20 ± 5mm of handle thickness.

In conjunction with shown in Fig. 6 and Fig. 7, Fig. 6 is perspective view of the rear mold under laid-flat status in the utility model Fig. 5, and Fig. 7 is Enlarged drawing in the utility model Fig. 6 at the A of part；There are four for forming seven line aluminium alloy smallclothes for setting in the rear mold 200 Primary cavity 240, and be provided with two shunting channel type chambers 230 being connected with its (i.e. this four primary cavities 240) and a master Runner type chamber 220, the mainstream channel type chamber 220 are connected with the material head type chamber 110 for being arranged in front of Fig. 4 on mould 100, the shunting Channel type chamber 230 is connected between mainstream channel type chamber 220 and primary cavity 240；The improvement of the utility model is: in the rear mold Be provided on 200 and squeeze pouch-type chamber 250, the primary cavity 240 connection the extruding pouch-type chamber 250 and shunt channel type chamber 230 it Between, and by the cylinder 300 that is arranged in die casting Fig. 6 rear mold 200, in conjunction with the accumulator pressure of horizontal type cold-chamber die casting, During seven line aluminium alloy smallclothes of die cast, delay extruding is carried out to the extruding pouch-type chamber 250.

Preferably, at the beginning of squeezing the extruding pouch-type chamber 250, the injection than horizontal type cold-chamber die casting is rushed Head stops 0.05 ~ 0.15s of pressure maintaining start time delay when advancing；Injection punch head stop advance when dwell pressure 170 ± 10bar, be delayed 130 ~ 150bar of squeeze pressure, 2.5 ~ 3s of extrusion time；The delay time and extrusion time for the compression stage that is delayed Length can be determined according to the weight of aluminium alloy smallclothes.

A kind of die casting of seven line aluminium alloys smallclothes provided by the utility model squeezes pouch-type chamber 240 due to using, In conjunction with delay fashion of extrusion, not refilling when pressure maintaining, and by the extruding packet of mold to not yet being solidified completely in primary cavity 230 Filler is squeezed in volume, so that its core tissue and structure are finer and close, the aluminium alloy smallclothes that thus die casting goes out are avoided There is short texture in wall thickness thicker core position, and will not occur after Post isothermal treatment local cracks, crackle with And it is air porous expanded, empty, shrink the defects of；By actual measurement, the aluminium alloy smallclothes after being heat-treated are really than using traditional pressure The strength of materials for casting raw material is much higher.

As shown in connection with fig. 8, Fig. 8 be seven line aluminium alloy smallclothes embodiment one of the utility model go out four die-casting blanks amplification it is vertical Body figure is wrapped by the material head 410 in complete die-casting blank 400, sprue 420, runner 430, product blank 440, extruding 450, the board-like exhaust block 470 of grate flow channel 460, washboard can integrate and intuitively reflect the material head type in die casting Fig. 4 Chamber 110, mainstream channel type chamber 220 in Fig. 7 shunt channel type chamber 230, product primary cavity 240, squeeze pouch-type chamber 250, grate flow channel Boundary and position between the shape and structure and each type chamber and die joint of the board-like air discharge duct 270 of type chamber 260, washboard are closed System.

In the preferred embodiment of seven line aluminium alloy smallclothes die casting of the utility model, go out four die casting Fig. 1 institutes with one For the aluminium alloy smallclothes shown, the settable two four product blanks 440 squeezed in 450 corresponding diagrams 8 of packet, wherein each to squeeze Two product primary cavities 240 in 250 connection figure 7 of briquetting type chamber, and laterally arrange between four primary cavities 240, and it is arranged The direction flow direction total with die-cast aluminum alloy material is perpendicular, to shorten the fill path of various chamber, avoids high-temperature fusion shape Temperature drop is excessive when die-casting material under state is filled to distal type chamber, causes trapped gas, filling not so as to cause material flowability reduction The die-cast products such as foot fall into defect；Correspondingly, a cylinder 300 is respectively arranged in the two sides of rear mold 200 shown in die casting Fig. 6, lead to Cross connection horizontal type cold-chamber die casting accumulator, with using accumulator pressure to extruding pouch-type chamber 250 respective in Fig. 8 according to The direction of arrow P carries out delay extruding.

It is preferred that the volume for individually squeezing packet 450 in Fig. 8 is greater than the volume of single product blank 440, and single extruding The volume of packet 450 is less than the volume of the two product blanks 440 communicated therewith；It is corresponding, pouch-type chamber 250 is individually squeezed in Fig. 7 Volume be greater than the volume of single primary cavity 240, and the single volume for squeezing pouch-type chamber 250 is less than two principal modes communicated therewith The volume of chamber 240, it is possible thereby to more economically meet the requirement that delay squeezes；Because the material of single product blank 440 causes The size of density, the extruding packet 450 communicated therewith has direct relationship；If squeezing, backpack body product is too small, and cooling velocity is fast, pressure Power is difficult to continue, and can not meet the time that delay squeezes；And it is excessive to squeeze backpack body product, in the case where squeezing the identical situation of volume, squeezes Effect is pressed to weaken, it is difficult to generate apparent squeezing effect to primary cavity 240.

In order to the air in die casting primary cavity 240 preferably be discharged, is produced with further increasing during die casting The material compactness of product blank 440, further, there are two the waves for connecting vaccum-pumping equipment for setting on the die casting Unrestrained formula air discharge duct 270 is arranged as shown in fig. 7, each extruding pouch-type chamber 250 is connected in two primary cavities 240 and a wave Between air drain 270；It is corresponding, 450 connection of packet is individually squeezed in Fig. 8 in two product blanks 440 and a wave exhaust block Between 470.

It is preferred that individually squeezing the grate flow channel 460 being connected between packet 450 and wave exhaust block 470 in Fig. 8 has Three, and there are two the product blanks 440 being connected with single extruding packet 450, the former is greater than the latter, to guarantee sufficiently to be vented； It is corresponding, 260 numbers of grate flow channel that pouch-type chamber 250 is connected with wave air discharge duct 270 are individually squeezed in Fig. 7, be greater than with 240 numbers of primary cavity that the extruding pouch-type chamber 250 is connected to, the former has three, and there are two the latter.

It is preferred that starting to take out above-mentioned two wave air discharge duct 270 when the injection punch head seals material mouth Vacuum；Otherwise, air can continue into the type chamber of die casting from material head type chamber 110；Moreover, the time vacuumized need to continue to At the beginning of packing stage, to accelerate the air in discharge mold cavity, further avoids product blank 440 and tinning occur Phenomenon.

It is preferred that shunting the cross-sectional area of junction between channel type chamber 230 and single primary cavity 240 described in Fig. 7, greatly The cross-sectional area of junction between single primary cavity 240 and extruding pouch-type chamber 250；And single primary cavity 240 with squeeze pouch-type The cross-sectional area of junction between chamber 250 is greater than and squeezes single grate flow channel between pouch-type chamber 250 and wave air discharge duct 270 260 cross-sectional area, farthest to match the mobility of seven series die-casting alloy aluminum materials.

It is preferred that shunting channel type chamber 230 described in Fig. 7 is connected with mainstream channel type chamber 220 and in flat herringbone Shape further decreases the defects of die casting of product blank 440 to optimize runner structure.

It is preferred that the side far from primary cavity 240 in shunting channel type chamber 230 described in Fig. 7, is provided with for molding figure The technique bench-type chamber 280 of 8 process areas 480, and be provided in the technique bench-type chamber 280 for forming Fig. 8 punching location hole 481 Positioning column 281；Material head 410, sprue 420 and runner 430 are got rid of using punching machine positioning when facilitating post-production.

It is preferred that the end for shunting channel type chamber 230 described in Fig. 7 is provided with cinder ladle hole 290, the cinder ladle in corresponding diagram 8 490, for deposit low speed injection stage front end it is already oxidised and package bulk gas die casting melting material；The cinder ladle 490 is in rotary table Shape, bottom are in arc surfaced；230 rounding off of shunting channel type chamber and tangentially connected cinder ladle hole 290, it is defective to guarantee Die casting melting material can smoothly enter into.

It is preferred that 110 temperature of preceding mould of the utility model die casting is maintained at 260 ± 10 DEG C in press casting procedure, after 200 temperature of mould is maintained at 280 ± 10 DEG C, to guarantee the stability of die casting batch.

Based on above-mentioned die casting, the utility model also proposed a kind of seven line aluminium alloy smallclothes, wall thickness at least two Different structure, the aluminium alloy smallclothes pass through the die casting pressure in any of the above-described embodiment using seven line aluminium alloys as raw material Type casting moulding；Product cored structure is fine and close, and after T4 and T6 heat treatment, higher integral strength, and product is not in part Crack, crackle and it is air porous expanded, empty, shrink the defects of.

So-called T4 and T6 heat treatment, context means that, the heat treatment of T6 after elder generation T4 is carried out for die casting aluminium product Mode, for improving the integral strength of Al-alloy parts；Wherein, T4 heat treatment refers to that solution treatment adds natrual ageing, at solid solution Reason refers to that die casting aluminium product is heated to high temperature monophase field constant temperature is kept for a period of time, makes superfluous phase sufficiently be dissolved into solid solution In after be quickly cooled down (such as air-cooled, oil cooling or water cooling etc.) be equivalent to quenched with obtaining the heat treatment process of supersaturated solid solution Processing, to soften its core tissue, increases the toughness of product；And T6 heat treatment refers to the complete people working hour after solution treatment Effect processing, that is, use higher aging temp and longer soaking time, obtain maximum hardness and highest tensile strength, but Elongation is lower, is equivalent to tempering, to eliminate product internal stress, improves surface hardness.

For die casting aluminium product of the utility model using seven line aluminium alloy raw material, at the solid solution in T4 heat treatment Reason stage, monophase field temperature are preferably controlled between 535 DEG C ± 10 DEG C, and the time controls at 2 hours or so；And T6 heat treatment is preferred It is made of two sections of artificial agings, first segment artificial aging is kept for 5 hours at 100 DEG C ± 5 DEG C of aging temp, when second segment is artificial Effect is kept 15 hours at 150 DEG C ± 5 DEG C of aging temp, the integral strength highest of the die casting aluminium product after being thus heat-treated.

It should be understood that the above is only the preferred embodiment of the utility model only, it is not sufficient to limit this reality With novel technical solution, for those of ordinary skills, within the spirit and principles of the present invention, Ke Yigen Increased and decreased according to above description, replaced, converted or is improved, and all these increases and decreases, replacement, transformation or improved technical side Case all should belong to the protection scope of the appended claims for the utility model.

Claims (10)

1. a kind of die casting of seven line aluminium alloy smallclothes, including preceding mould and rear mold, for forming seven systems of multiple wall unevennesses Aluminium alloy smallclothes, are provided in the rear mold multiple for forming the primary cavities of seven line aluminium alloy smallclothes, and are provided with and its phase The shunting channel type chamber and mainstream channel type chamber of connection, the mainstream channel type chamber are connected with the material head type chamber being arranged on preceding mould, institute It states and shunts the connection of channel type chamber between mainstream channel type chamber and primary cavity；It is characterized by: being provided with extruding packet in the rear mold Type chamber, the primary cavity connection is in the extruding pouch-type chamber and shunts between channel type chamber, and the vapour by being arranged on die casting Cylinder during die casting, carries out delay to the extruding pouch-type chamber and squeezes in conjunction with the accumulator pressure of horizontal type cold-chamber die casting Pressure.

2. the die casting of seven line aluminium alloys smallclothes according to claim 1, it is characterised in that: horizontal between multiple primary cavities To arrangement, and its arragement direction it is total with die-cast aluminum alloy material flow direction it is perpendicular.

3. the die casting of seven line aluminium alloys smallclothes according to claim 1, it is characterised in that: single extruding pouch-type chamber Volume is greater than the volume of single primary cavity, and the single volume for squeezing pouch-type chamber is less than the body of all primary cavities communicated therewith Product.

4. the die casting of seven line aluminium alloys smallclothes according to claim 1, it is characterised in that: be arranged on the die casting Have a wave air discharge duct for connecting vaccum-pumping equipment, the extruding pouch-type chamber connection primary cavity and wave air discharge duct it Between.

5. the die casting of seven line aluminium alloys smallclothes according to claim 4, it is characterised in that: it is single squeeze pouch-type chamber with The grate flow channel number that wave air discharge duct is connected, greater than the primary cavity number being connected to the extruding pouch-type chamber.

6. the die casting of seven line aluminium alloys smallclothes according to claim 4, it is characterised in that: the shunting channel type chamber with The cross-sectional area of junction between single primary cavity, greater than the cross section of junction between single primary cavity and extruding pouch-type chamber Product；And single primary cavity and the cross-sectional area for squeezing junction between pouch-type chamber, it is greater than and squeezes pouch-type chamber and wave air discharge duct Between single grate flow channel cross-sectional area.

7. the die casting of seven line aluminium alloys smallclothes according to claim 1, it is characterised in that: the shunting channel type chamber with Mainstream channel type chamber is connected and is in flat herringbone.

8. the die casting of seven line aluminium alloys smallclothes according to claim 1, it is characterised in that: on the shunting channel type chamber Side far from primary cavity is provided with technique bench-type chamber, and is provided in the technique bench-type chamber for molding press cutting location hole Positioning column.

9. the die casting of seven line aluminium alloys smallclothes according to claim 1, it is characterised in that: the shunting channel type chamber End is provided with cinder ladle hole, and cinder ladle hole side wall is in a circular table shape, and bottom is in arc surfaced；The shunting channel type chamber rounding off is simultaneously cut It is cheated to the cinder ladle is connected.

10. a kind of seven line aluminium alloy smallclothes, the different structure of wall thickness at least two, it is characterised in that: be with seven line aluminium alloys Raw material, via the die casting die cast of seven line aluminium alloy smallclothes described in described any one of claims 1 to 9.