CN103025447A - Extrusion dies for forming a hollow material - Google Patents
Extrusion dies for forming a hollow material Download PDFInfo
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- CN103025447A CN103025447A CN201180036124XA CN201180036124A CN103025447A CN 103025447 A CN103025447 A CN 103025447A CN 201180036124X A CN201180036124X A CN 201180036124XA CN 201180036124 A CN201180036124 A CN 201180036124A CN 103025447 A CN103025447 A CN 103025447A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/04—Mandrels
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Abstract
Even when extrusion-forming a billet comprising a high-extrusion-force, high-strength alloy-in particular, a high-strength aluminum alloy such as the so-called 7000 series-the disclosed extrusion dies (10) for forming a hollow material allow high-speed extrusion and prevent mandrel breakage, increasing service life. Said dies comprise: a male die (20) that extrudes a billet (B) in the downstream direction to form the interior shape of the final material, said billet having been sent from upstream; and a female die (30) that forms the exterior shape of the final material. The male die (20) comprises a mandrel (22) and a holder (25) that holds the outside thereof. The mandrel (22) is formed from an interior-forming part (23) and a bridge part (24) that supports said interior-forming part (23). The outer surface of the tip of the bridge part (24) engages with the inner surface of the holder (25), said engagement surface being angled such that the downstream side thereof, in the extrusion direction, approaches the center of the dies.
Description
Technical field
The present invention relates to hollow material and be shaped and use extrusion die, this extrusion die is for being shaped by high-strength alloy, the hollow material that particularly is made of the high-strength aluminum alloy of so-called 7000 series.
Background technology
In general, the advantage of the extrusion process of aluminium alloy etc. is that the flexibility of section configuration is good, can access the hollow material of extrusion molding, therefore is widely used at present.
Especially in recent years, the product that is obtained by extrusion process is used as the high-strength parts such as structural material, machine components and is widely used, therefore, to by high-strength alloy, particularly 7075, the increase in demand of the extruder member that consists of of the high-strength aluminum alloy of 7N01, so-called 7000 series such as 7003.
As an example of the existing extrusion die of usefulness that hollow material is shaped, have a kind of formpiston and former to be installed in hollow material extrusion die (for example seeing patent documentation 1) modular ring inside, that be made of so-called spider die (spider dice).
As shown in figure 17, patent documentation 1 disclosed spider die 100 has formpiston 101 and former 102, formpiston 100 has the core (axle) 110 that the inboard shape with hollow material is shaped, and former 102 is used for the outer shape of hollow material is shaped.
The plunger retainer 112 that formpiston 101 has above-mentioned core 110 and keeps this core 110.110 of cores are with being shaped with protuberance 113 and keeping the bridge-type of this shaping protuberance 113 111 to form enough.
And the leading section peripheral side 115b of the leading section 115 of bridge-type foot 111 becomes along with the place ahead one side to the direction of extrusion is extended and the inclined plane of expansion.The inner peripheral surface 112a of this leading section peripheral side 115b and plunger retainer 112 is chimeric.
As mentioned above, patent documentation 1 disclosed spider die 100 becomes along with extend the inclined plane of expanding to direction of extrusion the place ahead one side because of the leading section peripheral side 115b of the leading section 115 of each bridge-type foot 111, therefore in the process that blank is pushed, there is axial force in action at each bridge-type foot 111, the bending stress that acts on each bridge-type foot 111 is reduced.Therefore the deflection of each bridge-type foot 111 is inhibited, and the hold mode to core 110 in the extrusion process is stable.
The prior art document
Patent documentation
Patent documentation 1: Japanese application for a patent for invention Unexamined Patent 7-124633 communique
Summary of the invention
Invent technical problem to be solved
Yet, to use the high strength aluminium of high-strength alloy, especially so-called 7000 series as the materials'use of hollow material shaping usefulness, and form have extrudate so-called order font section etc., that a plurality of hollow bulbs are arranged be used as with this Alloy Forming for example bumper is used parts the time, because of its deformation drag higher than other alloy species, therefore extrusion process strength can increase, the load that brings to mould also can increase, and therefore is difficult to promote extrusion speed, is difficult to improve die life.
For example; during with the extrusion die 100 of above-mentioned patent documentation 1 disclosed hollow material; that interior all inclined plane 112a of plunger retainer 112 and the leading section peripheral side 115b of bridge-type foot 111 are pressed into; make in the compression stress of bridge-type foot 111 generations with the direction of direction of extrusion quadrature; this compression stress with implement extrusion process and the extruding force that applies at the upper surface of each bridge-type foot 111, namely offset at the tensile force to direction of extrusion the place ahead one side stretching that is shaped with protuberance 113 generations; prevent thus the breakage of bridge-type foot 111, and then prevent the breakage of core 110.
Yet, the leading section 115 of the bridge-type foot 111 of above-mentioned extrusion die 100 is inclined to towards the state of direction of extrusion the place ahead one side expansion, therefore on the leading section 115 of bridge-type foot 111, remain on base end part P1 and the bridge-type foot 111 on the maintenance face 116 of former 102 and be shaped greatly with the distance L between the intersection point of 113 of protuberances, the application point P2 that namely may rupture because of tensile force, moment is large.
Therefore when when core 100 applies extruding force, have huge loading and be applied on the above-mentioned application point P2, can make 111 fractures of bridge-type foot.
In order to address this problem, consider that the size of increase bridge-type foot 111 strengthens the intensity of bridge-type foot 111, the distance L of perhaps dwindling between base end part P1 and application point P2 reduces moment.
But in the situation of the size that increases bridge-type foot 111, guiding blank and the blank of being accommodated import space S and can dwindle, and can not guarantee the set amount of blank.In order to ensure the set amount of blank, will enlarge the inside diameter of plunger retainer 112, and so can cause mould to maximize, and distance L can prolong, the result still can not dwindle moment.
And in the situation of dwindling the distance L between base end part P1 and application point P2, can produce the space of plunger retainer 112 and each bridge-type foot between 111, be that the importing space S of blank is dwindled, the problems such as amount of compression minimizing of blank, dwindling of distance L is restricted.
As mentioned above, attempt may make bridge-type enough 111 and then be core 110 fractures by the offset spider die 100 of the problem that solves of compression stress and tensile stress, so the prolongation of die life also is restricted.
In order to address the above problem, the object of the present invention is to provide a kind of hollow material to be shaped and use extrusion die, even when the blank (extrded material) that the high-strength aluminum alloy by the large high-strength alloy of extrusion process power, especially so-called 7000 series is consisted of carries out extrusion molding, also can realize high speed extrusion, and can prevent that the axle fracture is with life-saving.
The technical scheme that the technical solution problem adopts
To achieve these goals, hollow material of the present invention is shaped standby with extrusion die: formpiston, this formpiston will be from the upstream downstream side extruding of blank that one side is sent here is made of aluminium alloy, be shaped with the inboard shape with hollow material; And former, this former is shaped the outer shape of described hollow material, it is characterized in that, described formpiston is configured to propping up with axle, described axle is shaped described inboard shape, described support is kept partly from the outside with this axle, described axle is formed by the inboard forming section of section bar and bridge section, the inboard forming section of described section bar is corresponding with the inboard shape of described hollow material, described bridge section is made of the inner peripheral surface one side-prominent a plurality of bridges from the outer circumferential described support of the inboard forming section of this section bar, inner peripheral surface at described support is provided with the bridge butt snap-latch surface that engages with the front end outer peripheral face butt of each described bridge respectively, the front end outer peripheral face of these each bridge butt snap-latch surfaces and each described bridge is formed the inclined plane at the one side joint near-lying mode tool center, downstream that makes the described direction of extrusion.
The invention effect
Hollow material of the present invention is shaped and adopts above structure with extrusion die, make the bridge section that consists of axle a plurality of bridges the front end outer peripheral face and become with along the direction of extrusion and near the inclined plane that the mode of mold center tilts at the bridge butt snap-latch surface that the inner peripheral surface of support forms, the base end part that therefore can dwindle a plurality of bridges on the bearing-surface of support with from this base end part to the distance till the application point of the direction of the inboard forming section of section bar and direction of extrusion quadrature.
Therefore, can dwindle the moment that the application point at section bar inner face forming section occurs, can increase the intensity of each bridge, thereby prevent the bridge section fracture of axle.The result is, even when the blank (extrded material) that consists of at the high-strength aluminum alloy to the huge high-strength alloy of extrusion process power, particularly so-called 7000 series carries out extrusion molding, also can realize high-speed extrusion and prolong life-span of mould.
In addition, because each bridge front end outer peripheral face and become the inclined plane at the one side joint near-lying mode tool center, downstream that makes the direction of extrusion at the bridge butt snap-latch surface that the inner peripheral surface of support forms, therefore extend towards mold center's one side the lower end of the inner peripheral surface of support, and the lower surface of support nearly all is maintained on the maintenance face of former.Therefore, support and the bridge section that is made of each bridge obtain stable maintenance, can stably carry out the shaping of hollow material.
Description of drawings
Fig. 1 is the whole top view that an embodiment of extrusion die is used in expression hollow material shaping of the present invention.
Fig. 2 is the longitudinal sectional view that the II-II line dissects in Fig. 1.
Fig. 3 is the longitudinal sectional view of details of the formpiston of the described embodiment of expression.
Fig. 4 is the longitudinal sectional view that the IV-IV line dissects in Fig. 3.
Fig. 5 is the whole top view of the axle of the described embodiment of expression.
Fig. 6 is the longitudinal sectional view that the VI-VI line dissects in Fig. 5.
Fig. 7 is the longitudinal sectional view that the VII-VII line dissects in Fig. 5.
Fig. 8 be Fig. 5 the VIII direction to view.
Fig. 9 is the whole top view of the support of the described embodiment of expression.
Figure 10 is the longitudinal sectional view that the X-X line dissects in Fig. 9.
Figure 11 is the whole top view of the former of the described embodiment of expression.
Figure 12 is the longitudinal sectional view that the XII-XII line dissects in Figure 11.
To be expression be shaped with the stereogram of the hollow material of the order font section of extrusion die shaping with the hollow material of described embodiment Figure 13.
To be expression be shaped with the stereogram of the hollow material of the square shape section of extrusion die shaping with the hollow material of described embodiment Figure 14.
Figure 15 is that expression hollow material of the present invention is shaped with the longitudinal sectional view of the deformation form of the formpiston of extrusion die.
Figure 16 is the section that the XVI-XVI line dissects in Figure 15, is local abridged longitudinal sectional view.
Figure 17 is the longitudinal sectional view of the existing hollow material extrusion die of expression.
The specific embodiment
Illustrate that below in conjunction with Fig. 1～Figure 12 hollow material of the present invention is shaped with an embodiment of extrusion die (being designated hereinafter simply as extrusion die) 10.
The extrusion die 10 of present embodiment is for the mould that will be shaped by the hollow material that high-strength alloy, the particularly high-strength aluminum alloy of so-called 7000 series consist of, and the extrusion die 10 of present embodiment is used for the hollow material 1 of order font section shown in Figure 13 is shaped.
As shown in Figure 2, extrusion die 10 possesses formpiston 20, former 30 and back of the body mould (back die) 40, the downstream side extruding of the blank B that is consisted of by aluminium alloy that formpiston 20 will be sent here by upstream one side of the direction of extrusion, be shaped with the inboard shape with hollow material 1, former 30 is shaped the outer shape of hollow material 1, and back of the body mould 40 keeps former 30.
In the blank pressurizing unit 60 that blank B is housed in upstream one side that is disposed at formpiston 20, be made of chamber etc., and by these blank pressurizing unit 60 extruding.
That is, formpiston 20 and former 30 as Fig. 1, Fig. 2 with behind two alignment pins, 45 location for example, with for example two connecting bolts 46 these formpistons 20, former 30, back of the body mould 40 are connected again and fixing.
The details of formpiston 20 as shown in Figure 3, use axle 22 that the inboard shape to hollow material 1 is shaped and with the periphery of this axle 22 in addition the local support that keeps 25 consist of, these supports 25 and axle 22 form one by for example method of press-fitting.
And the bridge butt snap-latch surface of the bridge maintaining part 26 on the front end outer peripheral face 24C of these four the first bridge 24a, the second bridge 24b, the 3rd bridge 24c, the 4th bridge 24d and the support 25, be that bridge seat face 26A engages partly.
And the mutual snap-latch surface of the front end outer peripheral face 24C of the first bridge 24a, the second bridge 24b, the 3rd bridge 24c, the 4th bridge 24d and the bridge seat face 26A of support 25 forms from upstream one side direction of the direction of extrusion and downstream one side and near the inclined plane of mold center.
Herein, after as shown in Figure 1 the axle 22 of formpiston 20 being assembled into one with support 25, the upper surface that consists of the inboard forming section 23 of section bar of axle 22 and the first bridge 24a, the second bridge 24b, the 3rd bridge 24c, the 4th bridge 24d becomes given size is moved back in recess from upper surface (sealing surface 25B) from support 25 to one rear flank, direction of extrusion downstream.And form importing space S, the S1 of blank with the space of 24 in these recess sections and four bridge sections.
As shown in Figure 5, bridge section 24 roughly extends to the four directions as described above from the upper facial 23A of the inboard forming section 23 of section bar, and makes flat shape form roughly X font by the first bridge 24a, the second bridge 24b, the 3rd bridge 24c, the 4th bridge 24d.
Be provided with inclined plane 24B(with reference to Fig. 3 at these first～the 4th bridge 24a～24d) and above-mentioned bridge front end outer peripheral face 24C, inclined plane 24B is along with extending and reduce height from above-mentioned facial 23A forward end 24A, bridge front end outer peripheral face 24C then with the front end of this inclined plane 24B, be that above-mentioned leading section 24A links to each other.
And this bridge front end outer peripheral face 24C engages with the above-mentioned bridge seat face 26A of the support 25 that will describe in detail in the back, and is maintained on this bridge seat face 26A.
Above-mentioned inclined plane 24B forms end from it towards the shape of the bridge seat face 26A expansion of above-mentioned support 25.And form as shown in Figure 4 the roughly bridge front end outer peripheral face 24C of rocket-shaped from its width, this bridge front end outer peripheral face 24C and bridge seat face 26A butt and be held, thereby as shown in Figure 3, towards tilting near the direction of section of mold center and arriving above-mentioned base end part P1.
Herein, on the extrusion die 10 of present embodiment, in the downstream of bridge seat face 26A one side, the butt between first～the 4th bridge 24a～24d and the support 25 strengthens, and has the very high tendency of compression stress.In order to reduce this part compression stress, such as Fig. 4, shown in Figure 5, near the base end part P1 of first～the 4th bridge 24a～24d, will form with the position of bridge seat face 26A butt and be provided with the to the left and right shape (with reference to Fig. 7, Fig. 8) of the triangular shape enlarged portion 24E of expansion.
This enlarged portion 24E and the extension 26C butt that forms in the downstream of bridge seat face 26 side.Therefore, therefore the contact area between first～the 4th bridge 24a～24d and the bridge seat face 26A can reduce the compression stress at this position just because the existence of enlarged portion 24E correspondingly increases.
Bridge front end outer peripheral face 24C as mentioned above, engage with the bridge seat face 26A of support 25 with predetermined distance along the direction of extrusion, from its terminal part, the front forms slowly circular-arc blank guide portion 24G(with reference to Fig. 6 towards the shaping jut 23B of the inboard forming portion 23 of above-mentioned section bar).
Downstream one side end in the flow direction of inboard shaping jut 23B has formed step, and this step becomes dodges the 50A of section, and this dodges the 50A of section becomes the tilted shape (with reference to Fig. 6) that broadens along with extending to the downstream direction that flows to.
Such as Fig. 7, shown in Figure 8, on the inboard forming section 23 of section bar, formed the first 23B of internal blocks section, the second 23C of internal blocks section and the 3rd 23D of internal blocks section in the end of direction of extrusion downstream one side, these first internal blocks 23B of section, the second 23C of internal blocks section and the 3rd 23D of internal blocks section have formed respectively among Figure 13 and Fig. 7, Fig. 8 respectively three space 1S, 1S, the 1S of the hollow material 1 of the order font section that represents with imaginary line.Herein, such as Figure 13, Fig. 7, shown in Figure 8, the hollow material 1 of order font section has a pair of long limit wall 1A, 1A, with length direction end minor face wall connected to one another 1B, the 1B of these long limit wall 1A, 1A and be configured in equably two partition wall 1C, 1C between these minor face walls 1B, the 1B.
And the gauge of two partition wall 1C, 1C is set as thinner than the gauge of long limit wall 1A, 1A and minor face wall 1B, 1B.But, also can make the gauge of each partition wall 1C, each long limit wall 1A, each minor face wall 1B identical, can be according to the specification free setting of hollow material 1.
The first 23B of internal blocks section, the second 23C of internal blocks section and the 3rd 23D of internal blocks section form respectively roughly square column type, as previously mentioned, are arranged on the end of direction of extrusion downstream one side of the inboard forming section 23 of section bar.
Direction of extrusion upstream one side on above-mentioned each block portion 23B, 23C, 23D is respectively equipped with round each periphery from separately the periphery projection frame 23E of outstanding band shape laterally.
The first 23B of internal blocks section and the 3rd 23D of internal blocks section outer Wednesday a position projection frame 23E and the projection frame 23E at two positions of periphery of the second 23C of internal blocks section respectively with the section bar profile of above-mentioned former 30 with opening 30B in opposite directions, and gap has separately consisted of the section bar that is used to form long limit wall 1A, 1A and minor face wall 1B, 1B and has formed with hole section 50.
And, by form the blank B that extrudes with hole section 50 from this section bar long limit wall 1A, the 1A of hollow material 1 and minor face wall 1B, 1B are formed.
In addition, each other in opposite directions the projection frame 23E of the first 23B of internal blocks section and the gap between the projection frame 23E of the second 23C of internal blocks section and each other in opposite directions the projection frame 23E of the second 23C of internal blocks section and the gap between the projection frame 23E of the 3rd 23D of internal blocks section consisted of the section bar that is used to form above-mentioned partition wall 1C, 1C and formed with hole section 51.
And, by form the blank B that extrudes with hole section 50 from this section bar partition wall 1C, the 1C of hollow material 1 are formed.
Gap between the projection frame 23E of gap between the projection frame 23E of the projection frame 23E of the first 23B of internal blocks section and the second 23C of internal blocks section and the projection frame 23E of the second 23C of internal blocks section and the 3rd 23D of internal blocks section is communicated with the blank bullport 24F of section respectively.
This blank bullport 24F of section forms along the direction with the first bridge 24a and the second bridge 24b and the 3rd bridge 24c and the 4th bridge 24d line connected to one another as shown in phantom in Figure 5, forms roughly semicircular tunnel-like as Fig. 6, Fig. 7.
And, at these blank bullports 24F of section, blank B from the importing space S of above-mentioned blank, S1 such as arrow n(with reference to Fig. 7) shown in be squeezed like that and be directed, and form via section bar and to be extruded with hole section 51.
In addition, the section bar profile of the projection frame 23E of the first 23B of internal blocks section and the 3rd 23D of internal blocks section and former 30 with the gap between the opening 30B, be during section bar forms with hole section 50, blank B from the importing space S of above-mentioned blank, S1 such as arrow m(with reference to Fig. 7) shown in be squeezed like that and be directed, and form via section bar and to be extruded with hole section 50.
Such as Fig. 9, shown in Figure 10, above-mentioned support 25 forms has the whole discoideus of specific thickness, states thereon to have formed circular blank on the end face of upstream one side of the direction of extrusion and import and use peristome 25A.
On support 25, in downstream one side of above-mentioned blank importing with the direction of extrusion of peristome 25A, be provided with the bridge maintaining part 26 that is kept for from periphery gripper bridge section 24.
That is, bridge maintaining part 26 is arranged in roughly with above-mentioned that first～the 4th bridge 24a～24d of X font is arranged on four positions accordingly respectively as shown in Figure 9.And as mentioned above, each bridge maintaining part 26 has the above-mentioned bridge seat face 26A for the bridge front end outer peripheral face 24C that keeps respectively first of axle 22～the 4th bridge 24a～24d.
These bridge seat faces 26A becomes the state that engages with the bridge front end outer peripheral face 24C of above-mentioned bridge section 24.That is, as shown in figure 10, bridge seat face 26A forms direction of extrusion downstream one side from direction of extrusion upstream-side-end 26F towards blank B and skewed near the C of mold center, and 26G becomes the base end part P1 on the bridge seat face 26A near the terminal.
The base end part P1 of bridge seat face 26A links to each other with the section 26D of dodging, this dodge the 26D of section from depart from bridge front end outer peripheral face 24C between the position that engages laterally, namely to the Directional Extension away from the C of mold center.And, forming as shown in Figure 7 the blank access S3 of section semicircular in shape shape with this blank of dodging the 26D of section and above-mentioned bridge section 24 with guide portion 24G, this blank is communicated with importing space S, the S1 of above-mentioned blank with access S3.
Herein, the tilt angle alpha between bridge seat face 26A and bridge outer peripheral face 24C ° is set as in for example 55 °～60 ° the scope.But be not limited to this angle.
In addition, the end face of blank direction of extrusion upstream one side of support 25 then become for the sealing surface 25B of blank pressurizing unit 60 butts.
Shown in the details of Fig. 9, Figure 10, between the blank of support 25 imports above-mentioned upstream-side-end 26F with the direction of extrusion of peristome 25A and bridge seat face 26A, be provided with and prevent first～the 4th bridge 24a～24d and then prevent the stopper portions 26B that axle 22 comes off from the bridge seat face 26A of support 25.
That is, this stopper portions 26B imports with peristome 25A side-prominent to the center C one of mould from blank with given size, and extends to form to direction of extrusion downstream one side with given size.In addition, the front side of direction of extrusion downstream one side of stopper portions 26B then becomes to the outside canyon topography of mould, and its R section becomes the above-mentioned upstream-side-end 26F of bridge seat face 26A.
Such as Figure 11, shown in Figure 12, on the upper surface of above-mentioned former 30, be provided with the central portion depression and the bracket leg bearing surface 30A of formation, the lower surface 25B of above-mentioned support 25 and this bracket leg bearing surface 30A go up butt and this support 25 are maintained.
Central part on this bracket leg bearing surface 30A has formed section bar profile opening 30B.The section bar profile is used to form formed products described later, is that the hollow material 1(of order font section is with reference to Figure 13 with opening 30B) outer shape.
As shown in figure 12, the section bar profile with opening 30B by very short line part and from this line part the hole 30C that dodges to the expansion of the peripheral direction of former 30 consist of.
Figure 13 shows the hollow material 1 of mould 10 extrusion moldings that as above consisted of.
Namely, above-mentioned hollow material 1 as shown in figure 13, connect the both end sides of a pair of long leg 1A with short leg 1B, being connected and having formed two divider wall parts 1C between these short legs 1B with between the above-mentioned a pair of long leg 1A, become the order font section that inside has three space 1S, 1S, 1S simultaneously.
And the hollow material 1 of this order font section is corresponding with the supply of blank B and form 50 extrusion moldings with hole section from the above-mentioned section bar of extrusion die 10 continuously.
Below explanation is with the be shaped manufacturing process of hollow material 1 of the extrusion die 10 of said structure.
In case blank B is pushed with the blank pressurizing unit 60 of direction of extrusion upstream one side that is provided in blank B for formpiston 20, this blank B just at first imports with peristome 25A from the blank of support 25 and is imported into the blank importing space S that the gap by 25 on the axle 22 of formpiston 20 and support consists of.
Be imported into blank B that blank imports space S via being configured to roughly first～the 4th bridge 24a～24d of X word shape and the side of the inboard forming section 23 of section bar, be imported into section bar that section bar profile at the inboard forming section 23 of section bar and former 30 forms between with the opening 30B usefulness hole section 50 that is shaped, and be extruded with hole section 50 from this section bar shaping.
And, through the hollow material 1 of extrusion molding from the section bar that forms at back of the body mould 40 send send with hole 40A after, by maintaining body maintenance not shown in the figures and be admitted to the warehouse for finished product etc. of regulation.
The extrusion die 10 of present embodiment possesses above structure, therefore can obtain following effect.
(1) owing to the snap-latch surface between the bridge seat face 26A of the front end outer peripheral face 24C of first～the 4th bridge 24a～24d of the bridge section 24 that consists of axle 22 and bridge maintaining part 26 forms along with the inclined plane of extending to direction of extrusion downstream one side near mold center, therefore can shorten support 25 bridge seat face 26A base end part P1 with from this base end part P1 on the forming section 23 of section bar inboard with the distance L 1 of the application point P2 of the direction of direction of extrusion quadrature.Therefore, can reduce the moment that produces at the application point P2 of the inboard forming section 23 of section bar, the result is the intensity that has increased first～the 4th bridge 24a～24d, therefore can prevent the fracture of these first～the 4th bridge 24a～24d.The result is, even when the blank B that consists of at the high-strength aluminum alloy to the huge high-strength alloy of extrusion process power, particularly so-called 7000 series carries out extrusion molding, also can realize high-speed extrusion and prolong life-span of mould.
(2) owing to the snap-latch surface between the bridge seat face 26A of the front end outer peripheral face 24C of first～the 4th bridge 24a～24d and bridge maintaining part 26 forms along with the inclined plane of extending to direction of extrusion downstream one side near mold center, so the lower surface of support 25 is to mold center's one side expansion.Therefore, the lower surface of support 25 is almost all being kept by the maintenance face 30A of former 30, therefore can stably keep support 25 and first～the 4th bridge 24a～24d, and the result can stably carry out the shaping of hollow material 1.
(3) near the base end part P1 of first～the 4th bridge 24a～24d, be provided with the to the left and right triangular shape enlarged portion 24E of expansion with the position of the extension 26C butt of bridge seat face 26A, therefore the contact area between first～the 4th bridge 24a～24d and the bridge seat face 26A just correspondingly increases because of the existence of enlarged portion 24E.The result, the all compression stresses of first～the 4th bridge 24a～24d that are provided with this enlarged portion 24E are dwindled, thereby can prevent the first～the 4th bridge 24a～24d fracture, thus, even when the blank B that the high-strength aluminum alloy by so-called 7000 series is consisted of carries out extrusion molding, also can realize high-speed extrusion and prolong life-span of mould.
(4) on support 25, upstream one side at the bridge seat face 26A of bridge maintaining part 26 is provided with the outstanding stopper portions 26B of bridge section that forms towards the radial center section of support 25, therefore can prevent that bridge section 24 from coming off from support 25, thereby can realize stable extrusion molding.
Abovely in conjunction with above-mentioned embodiment the present invention has been described, but has the invention is not restricted to above-mentioned embodiment.Can also carry out the various changes that those of ordinary skills can understand to structure of the present invention and details.In addition, the present invention also comprises the mutual suitably form of combination of all or part of structure of the respective embodiments described above.
For example, in the above-described embodiment, the hollow material 1 that is shaped with extrusion die 10 is the hollow material of order font section, but is not limited to this kind structure.The present invention also can be used for the shaping of the hollow material 2 of square shape section shown in Figure 14.
In this occasion, at first be the first 23B of internal blocks section, the second 23C of internal blocks section and the 3rd 23D of internal blocks section that replaces the inboard forming section 23 of section bar on the axle 22 of above-mentioned embodiment, end at the inboard forming section of section bar arranges a roughly block portion of flat column, forms the internal space S 2 of the hollow material 2 of square shape section.
And the section bar profile opening 30B of replacement former 30 arranges the roughly tetragonal section bar profile corresponding with a block portion of above-mentioned roughly flat column at former and gets final product with opening.
At this moment, the usefulness structure is identical gets final product for fastening state between the bridge outer peripheral face of axle and the bridge seat face of support and angle of inclination and above-mentioned order font hollow material 1, can use as before support 25, therefore can the be enough less extrusion molding of realizing the multiple hollow material that section configuration is different with parts.
In addition, in the above-described embodiment, the bridge section 24 that is made of the first bridge 24a, the second bridge 24b, the 3rd bridge 24c and the 4th bridge 24d forms as one to consist of axle 22 with the inboard forming section 23 of section bar, and the front end outer peripheral face 24C of this first～the 4th bridge 24a～24d supports with the bridge seat face 26A of support 25, but not limit by this, also can be for example Figure 15, structure shown in Figure 16.
The difference of the axle 72 of this distortion embodiment only is, bridge butt snap-latch surface, to be bridge seat face 76A outstanding with given size towards center C one side of axle 72 from the inner peripheral surface 25D of support 25, the thing followed is the contraction in length of the front end outer peripheral face 74C of first bridge 74a of bridge section 74 etc., and other structure is then identical with the axle 22 of above-mentioned embodiment.Therefore, in Figure 15, distortion embodiment shown in Figure 16, the parts that all and above-mentioned embodiment is identical and structure etc. all represent with same-sign, and description thereof is omitted.
These first bridges 74a etc. as mentioned above, and are shorter than the first bridge 24a of above-mentioned embodiment to the distance of the front end outer peripheral face 24C of first bridge 74a etc. from the center C of formpiston 20.
And, on the first bridge 74a etc., formed the inclined plane 74B that reduces height from the end of the upper surface 73A of the inboard forming portion 73 of section bar to leading section 74A one side of the first bridge 74a.
Relative therewith, be provided with the bridge maintaining part 76 suitable with above-mentioned bridge maintaining part 26 in the interior perimembranous of above-mentioned support 25.
This bridge maintaining part 76 possesses the bridge seat face 76A suitable with the bridge seat face 26A of above-mentioned embodiment.This bridge seat face 76A uses the raised face (RF) of giving prominence to given size towards center C one side of formpiston 20 from the inner peripheral surface 25D of support 25 to consist of as shown in figure 16.And the front end outer peripheral face 24C of this bridge seat face 76A and above-mentioned the first bridge 74a etc. respectively butt engages.
That is, in this distortion embodiment, formed the structure suitable with the first bridge 24a of above-mentioned embodiment with short the first bridge 74a of above-mentioned length and the bridge seat face 76A that gives prominence to given size.
And bridge seat face 76A engages with the mutual butt of front end outer peripheral face 24C of first bridge 74a etc., and becomes the inclined plane at the one side joint near-lying mode tool center, downstream of the blank direction of extrusion.
In addition, formed the dodge section 76D suitable with the 26D of the section that dodges of above-mentioned embodiment in the lower end of bridge seat face 76A.Also formed the stopper portions 76B suitable with the stopper portions 26B of above-mentioned embodiment in the direction of extrusion upstream of bridge seat face 76A one side.
Also the front end outer peripheral face 24C at first bridge 74a etc. is provided with the enlarged portion 74E suitable with the enlarged portion 24E of above-mentioned embodiment.
When adopting this distortion embodiment, the lower end of bridge seat face 76A is to support 25 and then side-prominent to the center C one of formpiston 20, therefore can make base end part P1 and the distance L 2 between the application point P2 that may rupture because of the tensile force of the front end outer peripheral face 24C of the first bridge 74a etc. of lower end of bridge seat face 76A shorter than the distance L 1 of above-mentioned embodiment.The moment that produces at the application point P2 of the inboard forming section 73 of section bar can be further reduced thus, the fracture of the first bridge 24a etc. can be further prevented.The result is, even when the blank B that consists of at the high-strength aluminum alloy to the huge high-strength alloy of extrusion process power, particularly so-called 7000 series carries out extrusion molding, also can realize high-speed extrusion and prolong life-span of mould.
The possibility of industrial utilization
Extrusion die of the present invention can be used in the shaping to the hollow material of the high-strength aluminum alloy formation of high-strength alloy, particularly so-called 7000 series.
(symbol description)
The hollow material of 1 order font section
10 hollow materials are shaped and use extrusion die
20 formpistons
22 axles
The inboard forming section of 23 section bars
The inboard shaping jut of 23B
24 bridge sections
24a～24d first～the 4th bridge
24C bridge front end outer peripheral face
The 24E enlarged portion
25 supports
26 bridge maintaining parts
26A is as the bridge seat face of bridge butt snap-latch surface
26B bridge section stopper portions
30 formers
30B section bar profile opening
50 section bars form the hole section that uses
51 section bars form the hole section that uses
72 axles
The inboard forming section of 73 section bars
The inboard shaping jut of 73B
74 bridge sections
74a the first bridge
74C bridge front end outer peripheral face
76 bridge maintaining parts
76A is as the bridge seat face of bridge butt snap-latch surface
76B bridge section stopper portions
Claims (4)
1. a hollow material is shaped and use extrusion die, possesses: formpiston, this formpiston will be from the upstream blank that one side is sent here is made of aluminium alloy downstream a side push, be shaped with the inboard shape with hollow material; And former, this former is shaped the outer shape of described hollow material, it is characterized in that,
Described formpiston is configured to propping up with axle, and described axle is shaped described inboard shape, and described support is kept partly from the outside with this axle,
Described axle is formed by the inboard forming section of section bar and bridge section, and the inboard forming section of described section bar is corresponding with the inboard shape of described hollow material, and described bridge section is made of the inner peripheral surface one side-prominent a plurality of bridges from the outer circumferential described support of this section bar inboard forming section,
Inner peripheral surface at described support is provided with the bridge butt snap-latch surface that engages with the front end outer peripheral face butt of each described bridge respectively,
The front end outer peripheral face of these each bridge butt snap-latch surfaces and each described bridge is formed the inclined plane at the one side joint near-lying mode tool center, downstream that makes the described direction of extrusion.
2. hollow material as claimed in claim 1 is shaped and uses extrusion die, it is characterized in that,
Each is stated bridge butt snap-latch surface and uses the raised face (RF) of giving prominence to the described front end face of each described bridge from the inner peripheral surface of described support to consist of.
3. hollow material as claimed in claim 1 or 2 is shaped and uses extrusion die, it is characterized in that,
In the end of described downstream one side of the front end outer peripheral face of each described bridge, be provided with from this end the to the left and right enlarged portion of projection.
4. be shaped such as each described hollow material in the claims 1 to 3 and use extrusion die, it is characterized in that,
In described upstream one side of the interior perimembranous of described support, be provided with the outstanding bridge section stopper portions that forms towards the radial center section of described support.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010180472A JP5496012B2 (en) | 2010-08-11 | 2010-08-11 | Extrusion dies for hollow profile molding |
| JP2010-180472 | 2010-08-11 | ||
| PCT/JP2011/064099 WO2012020603A1 (en) | 2010-08-11 | 2011-06-21 | Extrusion dies for forming a hollow material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103025447A true CN103025447A (en) | 2013-04-03 |
| CN103025447B CN103025447B (en) | 2015-08-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180036124.XA Active CN103025447B (en) | 2010-08-11 | 2011-06-21 | Hollow material shaping extrusion die |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5496012B2 (en) |
| CN (1) | CN103025447B (en) |
| WO (1) | WO2012020603A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942034A (en) * | 2014-03-27 | 2015-09-30 | 广东兴发铝业有限公司 | Recoverable building aluminum template mold |
| CN105080989A (en) * | 2015-09-24 | 2015-11-25 | 重庆盛镁镁业有限公司 | Clamping type aluminum alloy sectional bar mold in shape like Chinese character 'ri' |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5872312B2 (en) * | 2012-02-10 | 2016-03-01 | 日本軽金属株式会社 | Extrusion die for forming hollow profile and method for forming extrusion die for forming hollow profile |
| CN103128123A (en) * | 2013-03-27 | 2013-06-05 | 江苏格林威尔金属材料科技有限公司 | Multi-hole parallel flow pipe extrusion die |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0220614A (en) * | 1988-07-05 | 1990-01-24 | Showa Alum Corp | Bridge type extrusion die |
| JPH06134518A (en) * | 1992-10-27 | 1994-05-17 | Showa Alum Corp | Extrusion die |
| JPH07124633A (en) * | 1993-10-29 | 1995-05-16 | Showa Alum Corp | Die for extruding hollow material |
| CN101648229A (en) * | 2009-07-09 | 2010-02-17 | 西南铝业（集团）有限责任公司 | Porthole extrusion die |
| JP2010125475A (en) * | 2008-11-26 | 2010-06-10 | Nippon Light Metal Co Ltd | Extruding die for forming hollow shape material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07171614A (en) * | 1993-12-17 | 1995-07-11 | Showa Alum Corp | Die for extrusion |
-
2010
- 2010-08-11 JP JP2010180472A patent/JP5496012B2/en active Active
-
2011
- 2011-06-21 CN CN201180036124.XA patent/CN103025447B/en active Active
- 2011-06-21 WO PCT/JP2011/064099 patent/WO2012020603A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0220614A (en) * | 1988-07-05 | 1990-01-24 | Showa Alum Corp | Bridge type extrusion die |
| JPH06134518A (en) * | 1992-10-27 | 1994-05-17 | Showa Alum Corp | Extrusion die |
| JPH07124633A (en) * | 1993-10-29 | 1995-05-16 | Showa Alum Corp | Die for extruding hollow material |
| JP2010125475A (en) * | 2008-11-26 | 2010-06-10 | Nippon Light Metal Co Ltd | Extruding die for forming hollow shape material |
| CN101648229A (en) * | 2009-07-09 | 2010-02-17 | 西南铝业（集团）有限责任公司 | Porthole extrusion die |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942034A (en) * | 2014-03-27 | 2015-09-30 | 广东兴发铝业有限公司 | Recoverable building aluminum template mold |
| CN105080989A (en) * | 2015-09-24 | 2015-11-25 | 重庆盛镁镁业有限公司 | Clamping type aluminum alloy sectional bar mold in shape like Chinese character 'ri' |
| CN105080989B (en) * | 2015-09-24 | 2017-06-06 | 重庆盛镁镁业有限公司 | Day font clamp-close type section mould for aluminium alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012035319A (en) | 2012-02-23 |
| JP5496012B2 (en) | 2014-05-21 |
| CN103025447B (en) | 2015-08-05 |
| WO2012020603A1 (en) | 2012-02-16 |
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