CN104245172B - Hollow material moulding extrusion die - Google Patents

Hollow material moulding extrusion die Download PDF

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Publication number
CN104245172B
CN104245172B CN201380008923.5A CN201380008923A CN104245172B CN 104245172 B CN104245172 B CN 104245172B CN 201380008923 A CN201380008923 A CN 201380008923A CN 104245172 B CN104245172 B CN 104245172B
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China
Prior art keywords
keeper
inter
axle
access piece
mentioned
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CN201380008923.5A
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Chinese (zh)
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CN104245172A (en
Inventor
望月雄次
林沛征
齐藤荣德
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Nippon Light Metal Co Ltd
Nikkeikin Aluminum Core Technology Co Ltd
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Nippon Light Metal Co Ltd
Nikkeikin Aluminum Core Technology Co Ltd
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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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)

Abstract

A kind of hollow material moulding extrusion die is provided, even if in the time of steel billet extrusion process, also can realizes high-speed extrusion, and the durability that realizes axle increases, and can suppress axle direction of rotation deviation and obtain the product of high-quality. extrusion die (10) is configured to and comprises: formpiston (20), its by by steel billet (B) towards downstream side push to mold the inner side shape of section bar, and former (30), it molds the outer shape of section bar, form formpiston (20) by axle (22) and keeper (25) that its periphery is kept, form axle (22) by forming part (23) inside section bar and cross-over connection portion (24), forming part (23) inside described section bar is supported in wherein said cross-over connection portion (24) and its front end outer peripheral face engages mutually with the interior perimembranous of keeper (25), the downstream that the snap-latch surface of the interior perimembranous of the front end outer peripheral face of cross-over connection portion (24) and keeper (25) is made as to the direction of extrusion is near the such inclined plane of mold center, extrusion die comprises the rotating deviation anti-locking mechanism of prevention axle with respect to keeper.

Description

Hollow material moulding extrusion die
Technical field
The present invention relates to a kind of to by Series of High Strength alloy, the particularly such height of so-called 7000 seriesThe hollow material moulding extrusion die that the hollow member that strength aluminium alloy forms is carried out moulding.
Background technology
In general, to the extrusion process of aluminium alloy etc. obtain can be high with the free degree of cross sectional shapeThe hollow material aspect excellence of mode extrusion modling, therefore, is adopted now widely.
Particularly in recent years, the product obtaining by extrusion process is widely used as structural member, machineryThe strength member of parts etc., therefore, by Series of High Strength alloy, particularly 7075,7N01,7003The demand of the extruded member forming Deng the such high-strength aluminum alloy of so-called 7000 series increases.
As an example of the existing extrusion die for molding hollow material, known have one by what is calledThe extruding mould of the hollow that spider die tool forms, wherein, above-mentioned spider die toolIn, formpiston and former (for example, with reference to patent documentation 1) are installed in the inside of modular ring.
As shown in figure 37, the disclosed spider die tool 100 of above-mentioned patent documentation 1 comprises: toolHave the formpiston 101 of core (axle) 110, this formpiston 101 molds the inner side shape of hollow material;And former 102, this former 102 molds the outer shape of hollow material.
Formpiston 101 is configured to the plunger retainer that comprises above-mentioned core 110 and this core 110 is kept112. In addition, core 110 kept with protuberance 113 with to this moulding protuberance 113 by moulding acrossPin (Japanese: Block リ ッ ジ foot) 111 forms.
In addition, the leading section of the leading section 115 of cross-over connection pin 111 week sidepiece 115b is along with towards extrudingThe front side of direction and the inclined plane that expands. The inner peripheral surface of this leading section week side 115b and plunger retainer 112112a is chimeric.
Core 110 has the position of the inner side shape that molds above-mentioned hollow material in its underpart, in typeThe periphery of core 110 is provided with above-mentioned cross-over connection pin 111, and this cross-over connection pin 111 is towards the interior week of plunger retainer 112Face 112a is for example X word shape, extends towards four direction. In addition, by four cross-over connection pin 111 HesThe space that the inner peripheral surface 112a of plunger retainer 112 surrounds be by material, the leading of steel billet that aluminium alloy formsEnter space S.
Formpiston 101 is kept by above-mentioned former 102 in the direction of extrusion front side shown in arrow A. At this moonOn mould 102, be formed with the outer shape of inserting and mold hollow material for the bottom of above-mentioned core 110Forming hole portion 106. In addition, be formed with above-mentioned formpiston 101 at the outer circumferential side upper surface of former 102The maintenance face 116 that keeps of the bottom surface of cross-over connection pin 111.
As described above, in the disclosed spider die tool 100 of patent documentation 1, respectively acrossThe leading section week side 115b that pin 111 is leading section 115 is along with expanding towards the front side of the direction of extrusionThe inclined plane of opening, therefore, in steel billet extruding, axle masterpiece is used for each cross-over connection pin 111, and acts onThe bending stress of each cross-over connection pin 111 is less. Therefore the deflection that, becomes each cross-over connection pin 111 is inhibitedAnd make the hold mode stable structure of core 110 in extruding.
Prior art document
Patent documentation
Patent documentation 1: Japanese patent laid-open 7-124633 communique
Summary of the invention
Invent technical problem to be solved
But, using Series of High Strength alloy, the particularly such high strength aluminium of so-called 7000 seriesBe used as the material that hollow material moulding is used, and form and there is so-called cross section to be order word shape etc. suchThe for example bumper member that the extrudate of multiple hollow bulbs is used as being gone out by above-mentioned alloy formingSituation under, its deformation drag is higher than other alloy series, therefore, extrusion process power can become greatly, andMake the load of mold tool system also larger, thereby, be difficult to promote extrusion speed and improve mouldLife-span.
For example, use in mould 100, by sun in the extruding of above-mentioned patent documentation 1 disclosed hollowInterior all inclined plane 112a of modular ring 112 and the leading section of cross-over connection pin 111 week side 115b are pressed into, and makeBe created on cross-over connection pin 111 with the compression stress in the orthogonal direction of the direction of extrusion, and make above-mentioned compressionStress with carry out extrusion process and act on the extruding force of the upper surface of each cross-over connection pin 111, in mouldingOffset with the tensile force towards side stretching before the direction of extrusion producing on protuberance 113, by this, want to preventThe breakage of cross-over connection pin 111, and then prevent the breakage of core 110.
But with in mould 100, leading section 115 edges of cross-over connection pin 111 are towards squeezing in above-mentioned extrudingPress the direction that the front side of direction expands to tilt, therefore, keep at leading section 115 places of cross-over connection pin 111Base end part P1 on the maintenance face 116 of former 102 and cross-over connection pin 111 and moulding protuberance 113Intersection point, exist the distance L between the application point P2 of the possibility disrumpent feelings because of tensile force to become large, fromAnd make moment become large.
Thereby in the time that extruding force puts on core 100, on above-mentioned application point P2, effect has largerLoad, thus the cross-over connection pin 111 such problem of breaking that makes produced.
In order to address the above problem, can consider that the size that increases cross-over connection pin 111 is to increase cross-over connection pin 111Intensity or reduce base end part P1 and the distance of application point P2 to reduce moment.
But, in the case of increasing the size of cross-over connection pin 111, steel billet is guided and accommodates steelThe steel billet of base imports space S and diminishes, thereby cannot guarantee the set amount of steel billet. In order to ensure steel billetSet amount, need to increase the inside diameter of plunger retainer 112, if like this, can make mould maximize, andMake distance L elongated, consequently, cannot reduce moment.
In addition, in the case of reducing the distance L of base end part P1 and application point P2, can produce formpistonSpace between ring 112 and each cross-over connection pin 111, the importing space S of steel billet diminishes and steel billet crowdedPress the problems such as quantitative change is few, reducing self just to have limitation in distance L.
As mentioned above, wanting to solve problem by counteracting between compression stress and tensile stressIn spider die tool 100, due to the possibility that exists cross-over connection pin 111 and core 110 to break,Therefore, also there is limitation realizing aspect the long service life of mould.
In addition, because cross-over connection pin 111 is arranged on four positions in the mode of extending towards four direction, because ofThis, there is trickle difference in the size of the moment producing on the application point P2 of each cross-over connection pin 111, because ofAnd, because of the pressing force of steel billet of extruding, and there is front and the plunger retainer 112 at cross-over connection pin 111Inner peripheral surface 112a between produce the possibility rotatablely moving slightly.
In addition the steel billet squeezing out, flow trickle on an equal basis also can be to importing space S at each steel billetIn the pressing force towards cross-over connection pin 111 bring impact, from this aspect, exist at cross-over connection pin 111 andBetween the maintenance face 116 of former 102, produce the possibility of rotating deviation slightly.
In addition,, in the situation that producing rotating deviation, the thickness of product just produces deviation, and makes productStreaking even, thereby cannot obtain the product of high-quality.
In order to address the above problem, in the present invention, its object is to provide a kind of hollow material mouldingWith extrusion die, even if to by the larger Series of High Strength alloy of extrusion process power, particularly so-calledThe feelings that the steel billet (extrded material) that the such high-strength aluminum alloy of 7000 series forms carries out extrusion modlingUnder condition, also can carry out high-speed extrusion, and can realize the durability increase of axle, can be suppressed at simultaneouslyDeviation when steel billet extrusion process in axle direction of rotation obtains the product of high-quality.
The technical scheme that technical solution problem adopts
To achieve these goals, hollow material moulding of the present invention comprises with extrusion die: formpiston,This formpiston by the steel billet of sending here from upstream side, formed by aluminium alloy towards downstream side push, to moldThe inner side shape of hollow material; And former, this former is configured in the above-mentioned downstream of above-mentioned formpiston,And the outer shape that molds above-mentioned hollow material, is characterized in that, by axle and discoideus keeperForm above-mentioned formpiston, wherein, above-mentioned axle molds above-mentioned inner side shape, and above-mentioned keeper is by upperState axle be disposed at inner side and from outer partial above-mentioned axle is kept, and support with above-mentioned formerConnect, form above-mentioned axle by forming part inside section bar and cross-over connection portion, wherein, above-mentioned section bar inner side becomesType portion is corresponding with the inner side shape of above-mentioned hollow material, and above-mentioned cross-over connection portion is made up of multiple inter-access pieces,The inner peripheral surface pleurapophysis of these inter-access pieces from the outer regions of forming part inside above-mentioned section bar towards above-mentioned keeperGo out, at the inner peripheral surface of above-mentioned keeper, inter-access piece butt snap-latch surface is set, this inter-access piece butt snap-latch surfaceAlso mutually engage with the front end outer peripheral face difference butt of each above-mentioned inter-access piece, by each above-mentioned inter-access piece buttThe downstream that the front end outer peripheral face of snap-latch surface and each above-mentioned inter-access piece is formed as the above-mentioned direction of extrusion is near mouldThe inclined plane that tool center is such, above-mentioned hollow material moulding comprises the anti-stop machine of rotating deviation with extrusion dieStructure, the anti-locking mechanism of this rotating deviation is arranged in the scope that spreads all over above-mentioned axle and keeper, and stopsAxle is with respect to the rotating deviation of above-mentioned keeper.
Invention effect
Hollow material moulding of the present invention adopts above structure with extrusion die, can reduce propping up of keeperThe base end part of the multiple each inter-access pieces in bearing surface with inside section bar in forming part along orthogonal with the direction of extrusionThe application point of direction between distance. By this, can reduce on the application point of forming part inside section barThe moment producing. Therefore, the intensity of multiple each inter-access pieces can be increased, and the cross-over connection portion of axle can be preventedBreak, consequently, even if to by the larger Series of High Strength alloy of extrusion process power, particularlyThe steel billet (extrded material) that the such high-strength aluminum alloy of so-called 7000 series forms carries out extrusion modlingSituation under, also can carry out high-speed extrusion, and the durability that can realize axle increases, realize mouldLong service life.
In addition, utilize the anti-locking mechanism of rotating deviation being arranged in the scope that spreads all over axle and keeper,Even if exerting pressure, also can prevent that axle is with respect to keeper in the time of the extrusion process of steel billetThe deviation of direction of rotation. Consequently, can maintain constantly the uniformity of product thickness, and can obtainObtain high-quality and uniform product.
Brief description of the drawings
Fig. 1 is the entirety that represents the first embodiment of hollow material moulding of the present invention extrusion dieTop view.
Fig. 2 is the longitudinal section along the II-II line of Fig. 1.
Fig. 3 is the longitudinal section that represents the details of the formpiston of above-mentioned embodiment.
Fig. 4 is the longitudinal section along the IV-IV line of Fig. 3.
Fig. 5 is the overall top view that represents the axle of above-mentioned embodiment.
Fig. 6 is the longitudinal section along the VI-VI line of Fig. 5.
Fig. 7 is the longitudinal section along the VII-VII line of Fig. 5.
Fig. 8 is that the VIII of Fig. 5 is to view.
Fig. 9 is the overall top view that represents the keeper of above-mentioned embodiment.
Figure 10 is the longitudinal section along the X-X line of Fig. 9.
Figure 11 is keeper and the axle representing on upper surface above-mentioned embodiment, that be positioned in formerOne is in conjunction with the exploded view of the side section of previous state.
Figure 12 be the keeper that represents above-mentioned embodiment with axle by shrink fit one be combinedAfterwards, insert the exploded view that rotates the side section that prevents key state before.
Figure 13 is that the side that represents the keeper of above-mentioned embodiment and the axle state after integrated is analysed and observeFigure.
Figure 14 shows the E of Figure 13 to view, and it is to make keeper and the axle state after integratedTop view.
Figure 15 is the stereogram along the side section of the F-F line of Figure 14.
Figure 16 is only the stereogram of the side section of the keeper of Figure 15.
Figure 17 is only the stereogram of the side section of the axle of Figure 15.
Figure 18 is the overall top view that represents the former of above-mentioned embodiment.
Figure 19 is the longitudinal section along the G-G line of Figure 18.
Figure 20 be represent to utilize that the hollow material moulding of above-mentioned embodiment molds with extrusion die,Cross section is the stereogram of the hollow material of order word shape.
Figure 21 shows the anti-locking mechanism of rotating deviation of hollow material moulding of the present invention extrusion dieThe second embodiment, it is the side section of the state before representing the keeper to be combined with axle oneStereogram.
Figure 22 represents from the state of Figure 21 is combined keeper by shrink fit with axle oneState and rotation prevent the stereogram of the side section of key.
Figure 23 represents, from the state of Figure 22, rotation is prevented to key inserts complete to keeper and axleThe stereogram of the side section of the state after combination integratedly.
Figure 24 shows the anti-locking mechanism of rotating deviation of hollow material moulding of the present invention extrusion dieThe 3rd embodiment, it is to represent the first keeper portion to be combined integratedly with the first axle portion, andDispose the stereogram of the side section of the state of the second keeper portion and the second axle portion thereon.
Figure 25 represents from the state of Figure 24 the first keeper portion, the second keeper portion and first heartThe stereogram of the side section of the state after axial region, the one combination of the second axle portion.
Figure 26 is the top view along the H-H line of Figure 24.
Figure 27 shows the anti-locking mechanism of rotating deviation of hollow material moulding of the present invention extrusion dieThe 4th embodiment, its be represent the first keeper portion and the first axle portion and the second keeper andThe second axle portion one is in conjunction with the stereogram of the side section of previous state.
Figure 28 represents the first keeper portion of Figure 26 and the exploded perspective view of the first axle portion.
Figure 29 is the top view along the I-I line of Figure 27.
Figure 30 is the first keeper portion and the second keeper portion and that represents above-mentioned the 4th embodimentThe wholeheartedly stereogram of the side section of the state after axial region and the one combination of the second axle portion.
Figure 31 represents to utilize the hollow material moulding extrusion die of the respective embodiments described above to moldCross section be the stereogram of the hollow material of square shape shape.
Figure 32 is the deformation form that represents the formpiston of hollow material moulding of the present invention extrusion dieLongitudinal section.
Figure 33 is the cross section along the K-K line of Figure 32, and it is local abridged longitudinal section.
Figure 34 is the top view that represents the deformation form of above-mentioned the 3rd embodiment, the 4th embodiment.
Figure 35 is the decomposition that represents another deformation form of above-mentioned the 3rd embodiment, the 4th embodimentStereogram.
Figure 36 is the longitudinal section from the extruding mould of the hollow of the STA representation conventional example of Figure 35.
Figure 37 is the longitudinal section that represents the extruding mould of the hollow of conventional example.
Detailed description of the invention
Below, with reference to Fig. 1～Figure 20, to hollow material of the present invention extrusion die for moulding (following,Only being called extrusion die) the first embodiment of 10 describes.
The extrusion die 10 of present embodiment is to by Series of High Strength alloy, particularly so-called 7000The member that the hollow material that the such high-strength aluminum alloy of series forms carries out moulding, in present embodimentExtrusion die 10 in, mold the hollow material 1 that cross section such shown in Figure 20 is order word shape.
As shown in Figure 2, extrusion die 10 comprises: formpiston 20, this formpiston 20 is by from the direction of extrusionThe steel billet B that what upstream side transported be made up of aluminium alloy side extruding and mold hollow material 1 towards downstreamInner side shape; Former 30, this former 30 molds the outer shape of hollow material 1; And rear mold50, this rear mold 50 keeps above-mentioned former 30.
Steel billet B be configured to be housed in be disposed at former 20 steel billet upstream side, that formed by chamber etc. squeezeIn pressure device 60, and push by above-mentioned steel billet pressurizing unit 60.
Formpiston 20, former 30 and back of the body mould 50 connect integratedly.
That is, as shown in Figure 1 and Figure 2, by two alignment pins 45 for example to formpiston 20 and former30 position after, above-mentioned formpiston 20, former 30 and back of the body mould 50 are by for example two connecting bolts46 connect and fix.
First, formpiston 20 is described.
As being shown specifically in Fig. 3, formpiston 20 is made up of axle 22 and keeper 25, wherein,Above-mentioned axle 22 molds the inner side shape of hollow material 1, and above-mentioned keeper 25 is partly to above-mentionedThe periphery of axle 22 keeps, and molds the outer shape of hollow material 1.
In addition, above-mentioned keeper 25 and axle 22 for example by shrink fit one be combined, in addition,Be configured to and between keeper 25 and axle 22, be assembled with the anti-locking mechanism 40 of rotating deviation, thereby even ifIn the time of the extrusion process of steel billet B, axle 22 also can not rotate deviation with respect to keeper 25.
In addition, will be described hereinafter about the concrete condition of the anti-locking mechanism 40 of above-mentioned rotating deviation.
Axle 22 is made up of forming part 23 inside section bar and cross-over connection portion 24, wherein, and above-mentioned section bar inner sideForming part 23 is corresponding to the inner side shape of hollow material 1, and above-mentioned cross-over connection portion 24 is by above-mentioned section barSide forming part 23 supports and extends from forming part inside above-mentioned section bar 23 towards four direction roughlyMultiple inter-access pieces, i.e. the first inter-access piece 24a, the second inter-access piece 24b, the 3rd inter-access piece 24c and the 4thInter-access piece 24d forms.
In addition i.e. the first inter-access piece 24a, the second inter-access piece 24b, the 3rd cross-over connection of above-mentioned four inter-access pieces,Inter-access piece maintaining part in front end outer peripheral face 24C and the keeper 25 of part 24c, the 4th inter-access piece 24d26 inter-access piece butt snap-latch surface, i.e. inter-access piece supporting seat surface 26A engaging mutually partly.
In addition, the first inter-access piece 24a, the second inter-access piece 24b, the 3rd inter-access piece 24c, the 4th cross-over connectionThe snap-latch surface that the front end outer peripheral face 24C of part 24d and the inter-access piece of keeper 25 supporting seat surface 26A are mutualBe formed as from the upstream side of the direction of extrusion towards downstream side near such inclined plane, the center of mould.
At this, as shown in Figure 1, in the time that the axle of formpiston 20 22 and keeper 25 are assembled integratedly,Form forming part 23 and the first inter-access piece 24a, the second inter-access piece 24b inside the section bar of axle 22, theThe upper surface of three inter-access piece 24c, the 4th inter-access piece 24d is set for from the upper surface of keeper 25 (closeFront cover 25B) retreat the recess of given size towards direction of extrusion downstream. In addition, by above-mentioned recessSpace between portion and four cross-over connection portions 24, forms importing space S, the S1 of steel billet.
As shown in Figure 5, cross-over connection portion 24 is as mentioned above from the upper surface part 23A of forming part 23 inside section barTowards roughly four direction extension, and utilize the first inter-access piece 24a, the second inter-access piece 24b, the 3rd cross-over connectionPart 24c and the 4th inter-access piece 24d, be formed as making flat shape to be roughly X word shape.
On above-mentioned the first inter-access piece 24a～four inter-access piece 24d, be provided with inclined plane 24B (referenceFig. 3), with above-mentioned inter-access piece front end outer peripheral face 24C, wherein, above-mentioned inclined plane 24B is along with from above-mentionedSurface 23A reduces above-mentioned inter-access piece front end outer peripheral face 24C and above-mentioned inclination towards leading section 24AThe front end of face 24B, continuous with above-mentioned leading section 24A.
In addition, above-mentioned inter-access piece front end outer peripheral face 24C and the keeper 25 describing in detail below is above-mentionedInter-access piece supporting seat surface 26A engages mutually, and is kept by above-mentioned inter-access piece supporting seat surface 26A.
Above-mentioned inclined plane 24B is that end is stated the inter-access piece supporting seat surface 26A of keeper 25 upward from itThe shape expanding. In addition, be formed as shown in Figure 4 the roughly inter-access piece front end of rocket type from its widthOuter peripheral face 24C, this inter-access piece front end outer peripheral face 24C and inter-access piece supporting seat surface 26A butt, and by acrossFitting supporting seat surface 26A keeps, and as shown in Figure 3, above-mentioned inter-access piece front end outer peripheral face 24C leans in courtThe direction of the central part of near-lying mode tool arrives above-mentioned base end part P1 when inclination.
In addition, at the front end from inclined plane 24B to one end, top of inter-access piece front end outer peripheral face 24CForm the slot for inter-access piece of the anti-locking mechanism 40 of above-mentioned rotating deviation, i.e. groove 42 for key in scope(with reference to Fig. 6, Figure 17 etc.) form towards the downstream of the direction of extrusion of above-mentioned steel billet B.
At this, use in mould 10 in the extruding of the such mould of present embodiment, there is the first inter-access pieceThe downstream that is connected to inter-access piece supporting seat surface 26A of 24a～four inter-access piece 24d and keeper 25Grow, compression stress becomes very high trend. In order to reduce the compression stress of above-mentioned part, as Fig. 4,Shown in Fig. 5, be provided with near being formed on the base end part P1 of the first inter-access piece 24a～four inter-access piece 24dThe shape of leg-of-mutton enlarged portion 24E (with reference to Fig. 7, Fig. 8) simultaneously, this enlarged portion 24E with acrossThe position of fitting supporting seat surface 26A butt expands on left and right directions.
Above-mentioned enlarged portion 24E and the extension part 26C in downstream that is formed on inter-access piece supporting seat surface 26AButt. Thereby the first inter-access piece 24a～four inter-access piece 24d and inter-access piece supporting seat surface 26A connectTactile area has increased with enlarged portion 24E to be measured accordingly, therefore, can reduce the compression at above-mentioned positionStress.
As mentioned above, inter-access piece front end outer peripheral face 24C along the direction of extrusion in predetermined distance and keeper25 inter-access piece supporting seat surface 26A engaging, from the terminal part of inter-access piece front end outer peripheral face 24C more forwardPart be that the 23B of shaped projection portion of forming part 23 inside above-mentioned section bar is circular shape slowlySteel billet guide part 24G (with reference to Fig. 6).
The inner side 23B of shaped projection portion is with side-prominent slightly outwardly from the end of the steel billet pilot hole 24F of portionMode forms. In addition open in the outside moulding of the above-mentioned inner side 23B of shaped projection portion and above-mentioned formpiston 30,The hole portion 32 for product moulding that is spaced apart (with reference to Fig. 7, Fig. 8) of the given size of setting between oral area 30A.
End of downstream side at the flow direction of the 23B of inner side shaped projection portion is formed with step, this stepFor the tilted shape yielding 50A of portion (with reference to Fig. 6) along with broadening towards the downstream direction of flow direction.
As shown in Figure 7, Figure 8, the end in the downstream of the direction of extrusion in forming part 23 inside section barPortion is formed with the first 23B of inner side bulk portion, the second inner side 23C of bulk portion and the 3rd 23D of inner side bulk portion,Wherein, above-mentioned the first 23B of inner side bulk portion, the second 23C of inner side bulk portion, the 3rd 23D of inner side bulk portionForm respectively in Figure 13 and Fig. 7, Fig. 8 that each personal imaginary representation goes out, cross section be order word shape inThree space 1S, 1S of casement material 1,1S.
At this, the hollow material 1 that cross section is order word shape has: a pair of long limit wall 1A, 1A; By thisLong side direction end minor face wall connected to one another 1B, the 1B of a little long limit wall 1A, 1A; And join equablyPut two partition wall 1C, 1C between these minor face walls 1B, 1B.
In addition, the gauge of two partition wall 1C, 1C is set for than long limit wall 1A, 1A and minor faceThe gauge of wall 1B, 1B is thin. But, also can be by each partition wall 1C, each long limit wall 1A, each shortThe gauge of limit wall 1B is made as identical, can also freely set corresponding to the specification of hollow material 1.
The first 23B of inner side bulk portion, the second inner side 23C of bulk portion and the 3rd 23D of inner side bulk portion divideBe not formed as roughly quadrangular shape, as mentioned above, it is arranged on the extruding of forming part 23 inside section barThe end in direction downstream.
Direction of extrusion upstream side in above-mentioned each block 23B of portion, 23C, 23D, from above-mentioned each bulkThe 23B of portion, 23C, 23D periphery separately outwardly side-prominent banded projection frame 23E respectively with will be eachThe mode that periphery is reeled arranges.
Dashing forward of three positions of the periphery of the first inner side 23B of bulk portion and the 3rd 23D of inner side bulk portionRise the periphery of frame 23E and the second 23C of inner side basket portion two positions projection frame 23E respectively withThe section bar profile of above-mentioned former 30 is relative with opening 30B, each projection frame 23E and section bar profile openingThe section bar that between 30B, gap is separately configured for forming long limit wall 1A, 1A and minor face wall 1B, 1B formsWith hole portion 32 (with reference to Fig. 8).
In addition, utilize and form from above-mentioned section bar the steel billet B squeezing out with hole portion 32, form hollow typeLong limit wall 1A, 1A and minor face wall 1B, the 1B of material 1.
In addition, the projection frame 23E of the first relative 23B of inner side bulk portion and the second 23C of inner side bulk portionProjection frame 23E between gap and the projection frame 23E of relative the second 23C of inner side bulk portion withGap between the projection frame 23E of the 3rd 23D of inner side bulk portion be configured for forming above-mentioned partition wall 1C,The section bar of 1C forms with hole portion 33 (with reference to Fig. 6).
In addition, utilize and form from above-mentioned section bar the steel billet B squeezing out with hole portion 33, form hollow typePartition wall 1C, the 1C of material 1.
The projection frame 23E of the projection frame 23E of the first 23B of inner side bulk portion and the second 23C of inner side bulk portionBetween the projection frame 23E of gap, the second 23C of inner side bulk portion and the 3rd 23D of inner side bulk portion prominentThe gap of rising between frame 23E is communicated with the steel billet pilot hole 24F of portion respectively.
As shown in phantom in Figure 5, the above-mentioned steel billet pilot hole 24F of portion along by the first inter-access piece 24a withThe connection that the second inter-access piece 24b connects and the 3rd inter-access piece 24c is connected with the 4th inter-access piece 24dLine direction forms, and as shown in Figure 6, Figure 7, the above-mentioned steel billet pilot hole 24F of portion is formed as roughly semicircleTunnel-like.
In addition,, in the above-mentioned steel billet pilot hole 24F of portion, steel billet B is by the importing space from above-mentioned steel billetS, S1 push and guide as shown in arrow n, and form and be extruded with hole portion 33 via above-mentioned section barGo out.
In addition, the projection frame 23E of the first inner side 23B of bulk portion and the 3rd 23D of inner side bulk portion withThe section bar profile of former 30 is used in hole portion 32 with the gap between peristome 30B, i.e. section bar formation, steelBase B is pushed as shown in arrow m by the importing space S from above-mentioned steel billet, S1 and guides, and via typeMaterial forms and is squeezed out with hole portion 32.
Then,, based on Fig. 9, Figure 10, above-mentioned keeper 25 is described.
It is discoideus that above-mentioned keeper 25 is formed as having the entirety of specific thickness, at above-mentioned keeper 25The end face of upstream side of the above-mentioned direction of extrusion steel billet that is formed with toroidal import and use peristome 25A.
Above-mentioned steel billet importing in keeper 25 is provided with the downstream of the direction of extrusion of peristome 25AFor the inter-access piece maintaining part 26 that cross-over connection portion 24 is clamped and kept from its periphery.
That is, as shown in Figure 9, inter-access piece maintaining part 26 be that X word shape roughly arranges above-mentioned first acrossFitting 24a～four inter-access piece 24d is arranged on respectively four positions accordingly. In addition, as mentioned above,Each inter-access piece maintaining part 26 has respectively the first inter-access piece 24a～four inter-access piece for center roller 22The above-mentioned inter-access piece supporting seat surface 26A that the inter-access piece front end outer peripheral face 24C of 24d keeps.
The inter-access piece front end outer peripheral face 24C card of above-mentioned inter-access piece supporting seat surface 26A and above-mentioned cross-over connection portion 24Close. , as shown in figure 10, inter-access piece supporting seat surface 26A is formed as from direction of extrusion upstream-side-end26F towards the direction of extrusion downstream of steel billet B near the such inclination of the C of mold center, endways near26G is the base end part P1 of inter-access piece supporting seat surface 26A.
As being shown specifically in Fig. 3, Fig. 9 etc., at the steel billet importing peristome of keeper 25Between the above-mentioned upstream-side-end 26F of the direction of extrusion of 25A and inter-access piece supporting seat surface 26A, arrange limitedThe 26B of position portion, this limiting section 26B prevents the first inter-access piece 24a～four inter-access piece 24d and then preventsAxle 22 is extracted from the inter-access piece supporting seat surface 26 of keeper 25.
, above-mentioned limiting section 26B is to import the center C pleurapophysis towards mould with peristome 25A from steel billetGo out given size, and the mode of extending given size towards direction of extrusion downstream forms. In addition, limitThe front side in the direction of extrusion downstream of the 26B of position portion forms in the mode of the outside depression towards mould, and it fallsCircle portion is the above-mentioned upstream-side-end 26F of inter-access piece supporting seat surface 26A.
In addition, form in the scope of inter-access piece supporting seat surface 26A at the upper surface from limiting section 26BThe keeper side connecting hole of the anti-locking mechanism 40 of described rotating deviation, key with inserting hole 41 towards extrudingDirection downstream forms. Above-mentioned key runs through limiting section 26B with inserting hole 41, and is hollowed out to inter-access pieceThe half-way (with reference to Figure 15, Figure 16) of supporting seat surface 26A.
Base end part P1 and the 26D of yielding portion of inter-access piece supporting seat surface 26A are continuous, wherein, and above-mentioned yieldingThe 26D of portion is the position of throwing off that engages with inter-access piece front end outer peripheral face 24C from inter-access piece supporting seat surface 26ATowards outside, towards expanding away from the direction of the C of mold center. In addition as shown in Figure 7, moved back by above-mentioned,Allow the steel billet guide part 24G of the 26D of portion and above-mentioned cross-over connection portion 24, carry out Formation cross-section semicircular in shape shapeSteel billet access S3, above-mentioned steel billet is communicated with importing space S, the S1 of above-mentioned steel billet with access S3.
At this, the tilt angle alpha ° setting of inter-access piece supporting seat surface 26A and inter-access piece outer peripheral face 24CIn the scope of for example 55 °～60 °. But, be not limited to above-mentioned angle.
In addition, the end face of the steel billet direction of extrusion upstream side of keeper 25 be for steel billet pressurizing unitThe sealing surface 25B of 60 butts.
Then,, based on Figure 11～Figure 17, the anti-locking mechanism 40 of above-mentioned rotating deviation is elaborated.
Figure 11 represents that the keeper 25 of the upper surface that is positioned in formpiston 30 is combined with axle 22 oneThe exploded view of the side section of state before, Figure 12 be represent by shrink fit by keeper 25 withAxle 22 one in conjunction with after, insert side section that above-mentioned rotation prevents the state before key 43 pointXie Tu, Figure 13 be represent keeper 25 and axle 22 fully integratedly in conjunction with after the side of state analyse and observeFigure.
In addition, Figure 14 is the top view of observing along the E direction of Figure 13, and Figure 15 is along in Figure 14The stereogram of the side section of F-F line, Figure 16 is only the stereogram of the keeper 25 in Figure 15, figure17 is only the stereogram of the axle 22 in Figure 15.
As mentioned above, keeper 25 and axle 22 one combination by shrink fit, in addition, protectGripping member 25 and axle 22 utilize the anti-locking mechanism of rotating deviation can not with respect to keeper 25 with axle 22The mode one combination of rotation. Therefore, even if the larger pressure while having applied steel billet B extruding, axle22 also can not rotate with respect to keeper 25.
Then, to keeper 25, by shrink fit, integrated step describes with axle 22.
First,, under the state shown in Figure 11, keeper 25 is heated to the most applicable shrink fitSet point of temperature, by axle 22 so that above-mentioned the first inter-access piece 24a～four inter-access piece 24d (at figureIn 11～Figure 17, only show the first inter-access piece 24a, the 4th inter-access piece 24d) not with above-mentioned limiting sectionThe mode that 26B and inter-access piece supporting seat surface 26A interferes is with respect to limiting section 26B rotation for example 45° state under, axle 22 is configured in to the inside diameter of keeper 25 from the upstream side of keeper 25In the importing space S of above-mentioned steel billet and below inserting.
Then, so that the inter-access piece peripheral part 24C of axle 22 and the inter-access piece supporting base of keeper 25Face 26A engages and makes a part and the keeper 25 of the upper surface of the front end inclined plane 24B of axle 22The mode of lower surface engaging of limiting section 26B, simultaneously with inserting hole 41 and key groove for above-mentioned keyThe modes of 42 engagings, are used special fixture etc. that axle 22 is rotated, and carry out keeper 25 and the heartThe location of axle 22.
In addition, in the time that center roller 22 and keeper 25 position, also can be by axle 22 from keepingThe downstream of part 25 is configured in the importing space S of above-mentioned steel billet and inserts upstream side, then, and as aboveThe described shrink fit of carrying out.
At this, in the keeper 25 the inter-access piece supporting seat surface 26A of keeper 25 etc.The size of footpath portion is formed as than the slightly little size of profile size of front end inclined plane 24B of axle 22 etc.
Therefore, when after axle 22 and keeper 25 are positioned, by the cooling element pair of regulationKeeper 25 carries out when cooling, gets back to that the inter-access piece supporting seat surface 26A etc. of keeper 25 setsSize, by this, the state in being surrounded securely such as the front end inclined plane 24B of axle 22,, axle 22 and keeper 25 are combined by one securely by shrink fit.
As shown in Figure 11, Figure 16, on the limiting section 26B of keeper 25, as mentioned above from itSurface offer inserting hole 41 for key towards direction of extrusion downstream, this key with inserting hole 41 hollowed out to acrossThe half-way downward from top of fitting supporting seat surface 26A. , key the dark of inserting hole 41Portion's front end has been formed as end deep hole shape.
In the present embodiment, key is formed as cross section rectangular shaped with inserting hole 41. But, also canTo be the key inserting hole of shape arbitrarily such as circular hole. In a word, as long as can not make axle 22 and keeper25 rotate along direction of rotation.
In contrast, as shown in Figure 11, Figure 17, the first inter-access piece 24a of axle 22～Each front end inclined plane 24B of the 4th inter-access piece 24d is provided with inter-access piece side slot, i.e. key groove42, this key is positioned at above-mentioned key and uses on the same straight line of inserting hole 41 and with above-mentioned key with inserting with groove 42Through hole 41 is corresponding.
Especially, as being shown specifically in Figure 17, above-mentioned key with groove 42 from the first cross-over connectionA front end part of the front end inclined plane 24B of part 24a～four inter-access piece 24d is to inter-access piece front end peripheryIn the scope of a part for the upper side of face 24C, hollowed out. Key is from front end inclined plane 24B with groove 42Width central portion towards inter-access piece front end outer peripheral face 24C and run through formation along the direction of extrusion.
Rotation prevents that key 43 is formed as the cross section corresponding with key inserting hole 41 and key groove 42 and isRectangular shape bar-shaped.
In addition, as shown in figure 12, after key is positioned with inserting hole 41 and key groove 42, fromThe key of keeper 25 is inserted into the cross-over connection of key groove 42 and keeper 25 by inserting hole 41 1 sidesPart supports seat surface 26A midway, in the time that rotation prevents that key 43 is fully inserted into, as shown in figure 13,Axle 22 is combined integratedly with keeper 25, by this, forms above-mentioned formpiston 20.
In addition, by each four positions above-mentioned inserting hole 41, groove 42 and four rotations for key for keyPrevent key 43, form the anti-locking mechanism 40 of above-mentioned rotating deviation.
Then, above-mentioned former 30 is described.
As shown in Figure 18, Figure 19, be provided with at the upper surface of former 30 maintenance that central portion is recessed to formPart bearing-surface 30A, the lower surface 25c butt of this keeper bearing-surface 30A and above-mentioned keeper 25 comesAbove-mentioned keeper 25 is kept.
Be formed with section bar profile opening 30B at the central part of above-mentioned keeper bearing-surface 30A. Section barProfile with opening 30B be form illustrate below profiled member, cross section is the hollow material 1 of order fontThe member of the outer shape of (with reference to Figure 20).
As shown in figure 19, section bar profile with peristome 30B by thering is minute sized line part and from thisThe 30C of yielding portion that line part expands towards the peripheral direction of former 30 forms.
The hollow material 1 going out by mould 10 extrusion modlings of formation described above is shown in Figure 20.
That is, above-mentioned hollow material 1 uses short leg 1B that the both end sides of a pair of long leg 1A is connected,And after two divider wall parts 1C are connected between above-mentioned a pair of long leg 1A, divider wall parts 1C is formedBetween above-mentioned short leg 1B, above-mentioned hollow material 1 is for having three space 1S, 1S, 1S in inside, cross section is the shape of order font.
In addition the hollow material 1 that, this cross section is order font is by the above-mentioned section bar from extrusion die 10Forming the steel billet B moulding squeezing out continuously with hole portion 32 forms.
Then, to come the moulding side of moulding hollow material 1 by the extrusion die 10 of above this spline structureMethod describes.
For formpiston 20, when the steel billet extruding of the direction of extrusion upstream side by being configured in steel billet BWhen device 60 squeezes out steel billet B, first above-mentioned steel billet B imports with opening from the steel billet of keeper 25Oral area 25A imports the steel billet being made up of the gap between axle 22 and the keeper 25 of formpiston 20 and imports emptyBetween S.
Steel billet B after importing steel billet importing space S is via the first inter-access piece that is roughly the configuration of X word shapeInside 24a～four inter-access piece 24d and section bar, the side of forming part 23, is directed to and is formed on section barHole portion 32 for product moulding between opening 30B for the section bar profile of inner side forming part 23 and former 30,And by from hole portion 32 extrusion modlings for above-mentioned product moulding.
Hollow material 1 after extrusion modling is being sent and is being sent with hole 50A from the section bar that is formed at back of the body mould 50Afterwards, kept by not shown maintaining body, and moved into the rickyard of regulation.
In addition, owing to utilizing steel billet pressurizing unit 60 to squeeze out steel billet B, even if at extrusion die 10Formpiston 20 on effect while having larger squeeze pressure, axle 22 also can be by forming with keeper 25The key that four rotations of the anti-locking mechanism 40 of rotating deviation prevent key 43 and are each positioned at four positions is with insertingHole 41 and key form integratedly with groove 42 or join by axle 22 and the hot pressing of keeper 25Close chimeric and form integratedly, therefore, axle 22 can not rotated with respect to keeper 25, thereby,Steel billet B can be squeezed out with hole portion 32,33 from product moulding with normal state, by this, can obtainThere is no high-quality and the uniform product of wall thickness deviation.
The extrusion die 10 of this first embodiment has adopted as above structure, therefore, can obtain below thisThe effect of sample.
(1) owing to forming the first inter-access piece 24a～four inter-access piece 24d of cross-over connection portion 24 of axle 22Front end outer peripheral face 24C and the snap-latch surface of the inter-access piece supporting seat surface 26A of inter-access piece maintaining part 26 formFor towards direction of extrusion downstream near the such inclined plane of mold center, therefore, can reduce keeper 25Base end part P1 and the section bar of inter-access piece supporting seat surface 26A inside edge and the direction of extrusion in forming part 23Distance L 1 between the application point P2 of orthogonal direction. Therefore, can reduce forming part inside section barThe upper moment producing of 23 application point P2, consequently, can increase the first inter-access piece 24a～four acrossThe intensity of fitting 24d, therefore, can prevent that above-mentioned the first inter-access piece 24a～four inter-access piece 24d from breaking.Consequently, even if to by the larger Series of High Strength alloy of extrusion process power, particularly so-called 7000The steel billet B that the such high-strength aluminum alloy of series forms carries out in the situation of extrusion modling, also can carry outHigh-speed extrusion, and can realize axle durability increase, therefore, can be suppressed at steel billet extrusion process timeThe deviation of axle in direction of rotation is to obtain the product of high-quality.
The front end outer peripheral face 24C of (2) first inter-access piece 24a～four inter-access piece 24d and inter-access piece are protectedThe snap-latch surface of holding the inter-access piece supporting seat surface 26A of portion 26 is formed as towards direction of extrusion downstream near mouldThe inclined plane that center is such, therefore, the lower surface of keeper 25 expands towards mold center's side. Thereby,The lower surface of keeper 25 is almost all kept by the keeper bearing-surface 30A of former 30, therefore,Keeper 25 and the first inter-access piece 24a～four inter-access piece 24d can stably be kept, consequently,Can carry out the moulding of stable hollow material 1.
(3) near the base end part P1 of the first inter-access piece 24a～four inter-access piece 24d, be provided with threeThe enlarged portion 24E of dihedral, this enlarged portion 24E and extension part 26C inter-access piece supporting seat surface 26AThe position of butt expands on left and right directions, therefore, and the first inter-access piece 24a～four inter-access piece 24dIncrease with extension 24E and measure accordingly with the contact area of inter-access piece supporting seat surface 26A. Consequently,Can reduce whole at the first inter-access piece 24a～the second inter-access piece 24d including above-mentioned enlarged portion 24ECompression stress on body, therefore, can prevent that the first inter-access piece 24a～four inter-access piece 24d from breaking, matThis, even if be squeezed into the steel billet being made up of the such high-strength aluminum alloy of so-called 7000 seriesIn the situation of type, also can carry out high-speed extrusion, and can realize the durability increase of axle, therefore, energyWhile suppressing steel billet extrusion process, the deviation of axle in direction of rotation is to obtain the product of high-quality.
(4) upstream of the inter-access piece of the inter-access piece maintaining part 26 in keeper 25 supporting seat surface 26ASide is provided with the limiting section 26B of cross-over connection portion, and this cross-over connection portion uses limiting section 26B with the footpath towards keeper 25To the outstanding mode of central part form, therefore, can prevent that cross-over connection portion 24 from extracting from keeper 25,By this, can carry out stable extrusion modling.
(5) axle and keeper are anti-by spreading all over rotating deviation in the scope of above-mentioned axle and keeperLocking mechanism 40 and by combination integratedly, therefore, even if be applied with the feelings of larger pressure in the time that steel billet pushesUnder condition, also can stop the rotating deviation of axle with respect to keeper. Consequently, can prevent productWall thickness deviation, and can obtain high-quality and uniform product.
(6) the first inter-access piece 24a of the inter-access piece of keeper 25 supporting seat surface 26A and axle 22～The inter-access piece outer peripheral face 24C of the 4th inter-access piece 24d combination integratedly by shrink fit, keeper25 and axle 22 due to can further utilize the anti-locking mechanism 40 of rotating deviation prevent rotation, therefore,Can be by combination more securely. Thereby, even if be applied with larger pressure in the time that steel billet pushes, also can preventOnly the rotating deviation of axle and keeper, consequently, can prevent the deviation of the wall thickness of product, and energyObtain high-quality and uniform product.
Then, with reference to Figure 21～Figure 23, the second embodiment of the present invention is described.
The formpiston 20A of this second embodiment comprises the anti-locking mechanism 70 of rotating deviation.
, the anti-locking mechanism 70 of the rotating deviation of the second embodiment is by above-mentioned axle 22 and above-mentioned guarantorAfter gripping member 25 shrink fit, by rotation prevent key 73 from the below of keeper 25 towards axle 22One side is inserted.
In addition, in the first embodiment and the second embodiment, the anti-locking mechanism of rotating deviation 40 with revolveTurn anti-locking mechanism 70 differences of deviation, but other structure is all identical. Thereby, in this second embodiment,Marking identical symbol for the member identical with above-mentioned the first embodiment describes.
Figure 21 is the decomposition that represents the side section of the state of keeper 25 before being combined with axle 22 oneFigure, Figure 22 be represent keeper 25 be combined integratedly by shrink fit with axle 22 after, slottingEnter the exploded view that rotation prevents the side section of the state before key 73, Figure 23 be represent keeper 25 withAxle 22 fully integratedly in conjunction with after the stereogram of sectional view of state.
In the second embodiment, keeper 25 with axle 22 also by identical with the first embodimentOperation carry out shrink fit and combination integratedly.
In addition, as shown in Figure 21～Figure 23, in the lower surface 25C of keeper 25, with above-mentionedOn the corresponding face of inter-access piece supporting seat surface 26A, offer keeper side connecting hole, key is with insertingHole 71, this key supports seat surface 26A from the lower surface 25C of keeper 25 towards inter-access piece with inserting hole 71And run through along the direction of extrusion of steel billet B. Above-mentioned key is formed as cross section rectangular shaped with inserting hole 71.
But, can be also the shape arbitrarily such as circular hole. In a word, as long as can not make axle 22 and keepPart 25 rotates along direction of rotation.
In contrast, the first inter-access piece 24a～four inter-access piece 24d of axle 22 (Figure 21～In Figure 23, only show the first inter-access piece 24a, the 4th inter-access piece 24d) each front end inclined plane 24COn offer deep hole 72 for key, this key is positioned at deep hole 72 and the same straight line of above-mentioned key inserting hole 71Upper, and corresponding with inserting hole 71 with above-mentioned key. As being shown specifically in Figure 21, above-mentioned keyWith deep hole 72 by hollow out to the first inter-access piece 24a and the 4th inter-access piece 24d towards front end inclined planeThe half-way of 24B. That is to say, key is the deep hole that has the end with the deep front end of deep hole 72.
As shown in figure 22, after key is positioned with inserting hole 71 and key deep hole 72, revolve above-mentionedTurn and prevent that key 73 from inserting inserting hole 71 for key from the below of keeper 25, then inserts deep hole 72 for keyMidway, in the time that above-mentioned rotation prevents that key 73 is fully inserted into, as shown in figure 23, keeper 25 withAxle 22 is by combination integratedly.
In addition, rotation prevents that key 73 is for to prevent roughly phase of key 43 with the rotation of above-mentioned the first embodimentSame shape.
In addition, herein, by the above-mentioned inserting hole 71 for key that is each positioned at four positions, deep hole 72 for keyAnd four rotations prevent key 73, form the anti-locking mechanism 70 of above-mentioned rotating deviation.
According to the second embodiment of above such structure, except obtaining and above-mentioned the first enforcement sideOutside the identical effect of the effect of formula, can also obtain the effect roughly the same with above-mentioned (1)～(6).
Then,, with reference to Figure 24～Figure 26, the 3rd embodiment of the present invention is described.
The formpiston 20B of this 3rd embodiment is configured to and comprises the anti-locking mechanism 80 of rotating deviation.
Figure 24 be illustrated in make the first 85A of keeper portion engage with the first 82A of axle portion after, secondThe exploded perspective view of the side section of the state before the 85B of keeper portion and the second 82B of axle portion are fixed,Figure 25 represents the first 85A of keeper portion, the second 85B of keeper portion and the first 82A of axle portion,The exploded perspective view of the side section of the state after disloyalty axial region 82B combination integratedly, Figure 26 is along Figure 24In the top view of H-H line.
As shown in Figure 24, Figure 25, in the 3rd embodiment, as mentioned above, formpiston 20B is by protectingGripping member 85 and axle 82 form, and wherein, above-mentioned keeper 85 is by the first 85A of keeper portion and secondThe 85B of keeper portion forms, and above-mentioned axle 82 is made up of the first 82A of axle portion and the second 82B of axle portion.
At this, when the first 85A of keeper portion is connected to form keeper 85 with the second 85B of keeper portionTime, above-mentioned keeper 85 is configured to the keeper 25 with above-mentioned the first embodiment and the second embodimentRoughly the same shape.
In addition, in the time that the first 82A of axle portion is connected with the second 82B of axle portion and forms axle 82, onStating axle 82 is configured to the axle 22 of above-mentioned the first embodiment and the second embodiment roughly the sameShape.
, axle 82 by forming part inside section bar 83 and be arranged on forming part 83 inside this section bar outsideWeek, the cross-over connection portion 84 in region formed. In addition, cross-over connection portion 84 is the first inter-access piece of X word shape by plane84a～four inter-access piece 84d (at Figure 24, Tu25Zhong, only shows the first inter-access piece 84a, the 4thInter-access piece 84d) form.
But, in this 3rd embodiment, there is no above-mentioned the first embodiment and the second embodimentIn the limiting section 26B of inter-access piece maintaining part 26, but as an alternative, be provided with the second 82B of axle portionThe top of cross-over connection portion 84.
In addition, spreading all in the keeper 85 of above-mentioned such structure and the scope of axle 82, arrange,There is the anti-locking mechanism 80 of above-mentioned rotating deviation.
As shown in Figure 24 waits, first of the upper surface of the first 85A of keeper portion and the first 82A of axle portionInter-access piece 84a～four inter-access piece 84d (at Figure 24, Tu25Zhong, only show the first inter-access piece 84a,The 4th inter-access piece 84d) upper surface except the part of the plane central portion of the first 82A of axle portion it, be formed as the tabular surface of roughly the same height outward, as shown in figure 26, putting down of the first 82A of axle portionFace central portion is formed with overlooks the jut, i.e. the protuberance 82C that observe rectangular in shape.
In addition, the shape of protuberance 82C needs not be the above-mentioned observation rectangular in shape of overlooking. For example,So long as not circle, comparatively it is desirable to the polygonal shapes such as pentagon.
At the upper surface of the first 85A of keeper portion, to be on concentric circles with respect to axle 82 centerImpartial position, on the first inter-access piece 84a～four inter-access piece 84d of axle 82 extended line separatelyFour positions cut and have screwed hole 85C, above-mentioned screwed hole 85C and spiral shell from the second 85B of keeper portionThe construction bolt 88 that bolt inserting hole 85D inserts screws togather.
The second 85B of keeper portion be formed as having with the upper surface shape of the first 85A of keeper portion roughlyThe round of the underside shape of same shape, at above-mentioned the second 82B of axle portion and the second 85B of keeper portionBe arranged on integratedly the interior week of above-mentioned the second 85B of keeper portion.
In addition, in the second 85B of keeper portion, the first inter-access piece 84a of the second 82B of axle portion～The 4th inter-access piece 84d extended line separately, and be concentric with respect to the second axle Bu82B centerFour positions on circle, offer the above-mentioned bolt insertion hole corresponding with above-mentioned screwed hole 85C85D is inserted with as mentioned above construction bolt 88 in above-mentioned bolt insertion hole 85D.
In addition, above-mentioned construction bolt 88 screws togather with each screwed hole 85C of above-mentioned the first 85A of keeper portion,By this, the second 85B of keeper portion is combined integratedly with the first 85A of keeper portion, and the first axle portion82A is combined integratedly with the second 82B of axle portion.
On the lower surface of the central portion of the second 82B of axle portion, be formed with above-mentioned the first axle portion 82The recess 85E that protuberance 82C is corresponding. Therefore, when the second 85B of keeper portion is covered to the first maintenanceWhen the 85A of part portion is upper, the recess 85E of the protuberance 82C of axle 82 and the second 82B of axle portion is mutually chimeric,If use construction bolt 88 by the second 85B of keeper portion and the first keeper portion under such state85A fixes, and keeper 85 and axle 82 are combined by one securely, by this, even if at steel billet BWhen extruding, axle 82 also can not rotated with respect to keeper 85, consequently, can obtain on wall thicknessDo not have devious, high-quality and product uniformly.
At this, each front end outer peripheral face 84C of the first inter-access piece 84a～four inter-access piece 84d of axle 82With the shape of the inter-access piece supporting seat surface 86A of the first 85A of keeper portion, with above-mentioned embodiment oneEach front end outer peripheral face 24C of the first inter-access piece 24a～four inter-access piece 24d and the cross-over connection of keeper 25The shape of part supporting seat surface 26A is roughly the same.
In addition, when utilizing construction bolt 88 that the second 85B of keeper portion and the first 85A of keeper portion are enteredRow combination integratedly, while forming keeper 85, above-mentioned keeper 85 is set for and the first enforcement sideRoughly the same gauge and the shape of keeper 25 of formula.
In addition, herein, by protuberance 82C and the second 82B of axle portion of above-mentioned the first 82A of axle portionRecess 85E, the first 85A of keeper portion, the second 85B of keeper portion and four construction bolts 88, comeForm the anti-locking mechanism 80 of rotating deviation of above-mentioned the 3rd embodiment.
In the 3rd embodiment of above this spline structure, also by identical with above-mentioned the first embodimentEffect, carry out the extruding of steel billet B.
In addition, except can obtain with the roughly the same effect in above-mentioned (1)～(5), (7) theWholeheartedly the recess 85E of the protuberance 82C of axial region 82A and the second 82B of axle portion is chimeric, in addition, and firstThe 85A of keeper portion and the second 85B of keeper portion are fixing by four construction bolts 88, therefore, and axle82 are combined by one securely with keeper portion 85. Consequently, even if apply in the time that steel billet pushesLarge pressure, also can stop the spinning movement of axle with respect to keeper. Consequently, can prevent productWall thickness deviation, and can obtain high-quality and uniform product.
Then,, based on Figure 27～Figure 30, the 4th embodiment of the present invention is described.
The anti-locking mechanism 90 of rotating deviation of this 4th embodiment has adopted following structure: by the above-mentioned the 3rdThe anti-locking mechanism 80 of rotating deviation of embodiment is as the anti-locking mechanism of the first rotating deviation, and increase and upperState different, the new anti-locking mechanism 91 of the second rotating deviation of the anti-locking mechanism 80 of the first rotating deviation.
Owing to the anti-locking mechanism 80 of the first rotating deviation being illustrated, therefore, below, only rightThe anti-locking mechanism 91 of the second rotating deviation describes.
Figure 27 is former 30, the first 85A of keeper portion, the first axle 82 and the second 85B of keeper portionThe exploded perspective view of side section, Figure 28 represents the first 85A of keeper portion and the first axle 82 1The exploded perspective view of the side section of the state before bodyization, Figure 29 be represent the first 85A of keeper portion withThe top view of the state after the first axle 82 is integrated, Figure 30 be represent the first 85A of keeper portion withThe first 82A of axle portion and the second 85B of keeper portion are combined integratedly and form with the second 82B of axle portionFormpiston 20C and former 30 between the stereogram of side section of relation.
As shown in Figure 27, Figure 28, the anti-locking mechanism 91 of above-mentioned the second rotating deviation is by protruding part 92 HesHolding section 93 forms, wherein, above-mentioned protruding part 92 be arranged on above-mentioned the first 82A of axle portion respectively acrossFitting 84a～84d (only shows the first inter-access piece 84a, the 4th inter-access piece in Figure 27～Figure 30Inter-access piece front end outer peripheral face 84C 84d), above-mentioned holding section 93 is formed on the first 85A of keeper portionInter-access piece supporting seat surface 86A.
Above-mentioned protruding part 92 is with the long side direction along inter-access piece front end outer peripheral face 84C and from above-mentioned cross-over connectionThe outstanding mode of part front end outer peripheral face 84C arranges, and makes above-mentioned protruding part 92 and above-mentioned holding section 93Engaging. Thereby, as shown in figure 29, because protruding part 92 engages with holding section 93, therefore, can hinderOnly the first 82A of axle portion wants the action with respect to the first 85A of keeper portion rotation.
In this 4th embodiment, as mentioned above, except being arranged on the first inter-access piece 84a～fourProtruding part on each front end outer peripheral face 84C of inter-access piece 84d 92 be formed on the first 85A of keeper portionInter-access piece supporting seat surface 86A on the engaging of 93 of holding sections outside, make that the first axle 82A's is protrudingThe recess 85E of the 82C of portion and the second axle 82B is mutually chimeric, then, and by the second 85B of keeper portionCover the first 85A of keeper portion upper, thereby utilize above-mentioned construction bolt 88 by keeper 85 and the heartAxle 82 is fixing and integrated, thereby completes formpiston 20C.
By this, keeper 85 and axle 82 are combined by one securely, therefore, even if at steel billet BWhen extruding, axle 82 also can not rotated with respect to keeper 85, consequently, can obtain wall thickness and not haveDevious, high-quality and uniformly product.
In addition herein, prevented by the anti-locking mechanism 80 of above-mentioned the first rotating deviation and the second rotating deviation,Mechanism 91, forms the anti-locking mechanism 90 of above-mentioned rotating deviation of the 4th embodiment.
In the 4th embodiment of above structure, also can be by identical with above-mentioned the first embodimentEffect, carries out the extruding of steel billet B.
In addition, except obtaining the effect roughly the same with above-mentioned (1)～(5), (7),(8) using anti-the rotating deviation of the 3rd embodiment locking mechanism 80 as the anti-locking mechanism of the first rotating deviation80, on the basis of the anti-locking mechanism 80 of above-mentioned the first rotating deviation, increase and above-mentioned the first rotating deviationThe anti-locking mechanism 91 of the second rotating deviation that anti-locking mechanism 80 is different, therefore, becomes the rotation of dual structureThe anti-locking mechanism of deviation. Thereby keeper 82 and axle 85 are combined by one securely, even if at steelWhen base B extruding, axle 82 also can not rotated with respect to keeper 85, consequently, can obtain wallThick do not have devious, high-quality and a product uniformly.
Above, describe the present invention with reference to above-mentioned embodiment, but the present invention is not limited toAbove-mentioned embodiment. About structure of the present invention, details, can increase those skilled in the art's energyThe various changes of understanding. In addition, in the present invention, also comprised one of the respective embodiments described aboveThe situation that separation structure or entire infrastructure combine mutually rightly.
For example, in the respective embodiments described above, will be made as by the hollow material 1 of extrusion die 10 mouldingCross section is the hollow material of order word shape, but is not limited to this. Also cutting shown in Figure 31 can moldedWhen being the hollow material 2 of mouthful word shape, face utilizes.
In this case, first, inside section bar, the end of forming part arranges quadrangular shape roughlyA block portion, thus Formation cross-section is the inner space 2S of mouthful hollow material of word shape 2, to replaceThe first 23B of inner side bulk portion of forming part 23 inside section bar in the axle 22 of the respective embodiments described above,The second inner side 23C of bulk portion and the 3rd 23D of inner side bulk portion.
Then, as long as arrange corresponding with a block portion of above-mentioned roughly quadrangular shape on formerRoughly tetragonal section bar profile opening, to substitute the section bar profile opening 30B of former 30.
Now, the inter-access piece front end outer peripheral face of axle and the inter-access piece of keeper support the shape that engages of seat surfaceState and angle of inclination need only identical with the structure of above-mentioned hollow material 1 use that is order font, due toCan former state use keeper 25, therefore, can be variform multiple with less use member pair cross-sectionHollow member is carried out extrusion modling.
In addition, in the respective embodiments described above, adopt following structure: by the first inter-access piece 24a,Cross-over connection portion 24 and section bar that two inter-access piece 24b, the 3rd inter-access piece 24c and the 4th inter-access piece 24d formInner side forming part 23 forms to form axle 22, and makes above-mentioned the first inter-access piece 24a～fourThe inter-access piece supporting seat surface 26A that the front end outer peripheral face 24C of inter-access piece 24d is kept part 25 supports,But be not limited to this, for example, also can adopt the structure shown in Figure 32, Figure 33.
, the axle 62 of present embodiment is at inter-access piece butt snap-latch surface, i.e. inter-access piece supporting seat surfaceThe center C side-prominent given size of 66A from the inner peripheral surface 25D of keeper 25 towards axle 62, and followOn this aspect of contraction in length of the front end outer peripheral face 64C that makes first inter-access piece 64a of cross-over connection portion 64 etc. notWith, but other structure is identical with the axle 22 of above-mentioned embodiment. Thereby, at Figure 32, figureIn mode of texturing shown in 33, for the member identical with the respective embodiments described above and identical structure etc.Mark identical symbol, and omit their explanation.
Axle 62 is made up of forming part 63 inside section bar and cross-over connection portion 64, wherein, and above-mentioned section bar inner sideForming part 63 is equivalent to forming part 23 inside above-mentioned section bar, and above-mentioned cross-over connection portion 64 is by from this section bar inner sideThat the periphery of forming part 63 is extended towards the inner peripheral surface 25D side of above-mentioned keeper 25, be equivalent to above-mentioned theThe formations such as the first inter-access piece 64a of one inter-access piece 24a.
Except the first inter-access piece 64a, though not shown, cross-over connection portion 64 is by the second inter-access piece,Three inter-access pieces and the 4th inter-access piece form.
As mentioned above, above-mentioned first inter-access piece 64a etc. is from the center C of formpiston 20 to the first cross-over connection portionDistance between the front end outer peripheral face 24C of 64a etc. is shorter than the first 24a of cross-over connection portion of above-mentioned embodiment.
In addition on first inter-access piece 64a etc., be formed with from the upper surface of forming part 63 inside section bar,One end of 64A is towards the inclined plane 64B of the leading section 64a side step-down of the first inter-access piece 64a.
In contrast, be provided with and be equivalent to above-mentioned inter-access piece guarantor in the interior perimembranous of above-mentioned keeper 25Hold the inter-access piece maintaining part 66 of portion 26.
This inter-access piece maintaining part 66 comprises that the inter-access piece that is equivalent to above-mentioned embodiment supports seat surface 26A'sInter-access piece supporting seat surface 66A. As shown in figure 33, above-mentioned inter-access piece supporting seat surface 66A is by from keeper25 inner peripheral surface 25D forms towards the raised face (RF) of the side-prominent given size of center C of formpiston 20. In addition,Above-mentioned inter-access piece supporting seat surface 66A respectively with the front end outer peripheral face 64C of above-mentioned the first 64a of cross-over connection portion etc.Butt mutually engaging.
That is to say, in above-mentioned mode of texturing, by first shorter 64a of cross-over connection portion of above-mentioned length etc.Inter-access piece supporting seat surface 66A with after outstanding given size, is configured to and first of above-mentioned embodiment24a is suitable in cross-over connection portion.
In addition make, the front end outer peripheral face 64C of inter-access piece supporting seat surface 66A and the first 64a of cross-over connection portion etc.Butt mutually engaging, and be that the downstream of the steel billet direction of extrusion is near the such inclined plane of mold center.
In addition, be formed with and be equivalent to moving back of above-mentioned embodiment in the lower end of inter-access piece supporting seat surface 66AAllow the 66D of yielding portion of the 26D of portion. In addition, support the direction of extrusion upstream side shape of seat surface 66A at inter-access pieceBecome to have the limiting section 66B of the limiting section 26B that is equivalent to above-mentioned embodiment.
In addition, be provided with and be equivalent to above-mentioned enforcement at the front end outer peripheral face 64C of first 64a of cross-over connection portion etc.The enlarged portion 64E of the enlarged portion 24E of mode.
In addition, in this case, also can be same with above-mentioned the first embodiment, the second embodimentGround, by axle 62 and keeper 25 shrink fit, is then suitable for the anti-locking mechanism 40 of above-mentioned rotating deviation.
In addition, according to this mode of texturing, the lower end of inter-access piece supporting seat surface 66A towards keeper 25 andThe center C one of formpiston 20 is side-prominent, therefore, can make the cardinal extremity of the lower end of inter-access piece supporting seat surface 66AThe P1 of portion with exist because of the tensile force of the front end outer peripheral face 64C of the first 64a of cross-over connection portion etc. break mayDistance L 2 between the application point P2 of property, shorter than the distance L of above-mentioned embodiment 1. By this, can enterOne step reduces the moment producing on the application point P2 of forming part 63 inside section bar, and then can preventOne inter-access piece 64a etc. breaks. Consequently, even if to by the larger high strength of extrusion process power beingRow alloy, the steel billet B that particularly the such high-strength aluminum alloy of so-called 7000 series forms pushIn the situation of moulding, also can carry out high-speed extrusion, and can realize the durability increase of axle, therefore,Can be suppressed at steel billet extrusion process time, the deviation of axle in direction of rotation is to obtain the product of high-quality.
In addition, in above-mentioned the first embodiment and the second embodiment, axle 22 and keeper 25The combination integratedly by shrink fit, but above-mentioned axle 22 is configured to utilize with keeper 25 and revolvesTurn the anti-locking mechanism 40 of deviation, the anti-locking mechanism 70 of rotating deviation and prevent respectively rotation, therefore, necessaryCarry out shrink fit.
In this case, existence can be omitted such effect in man-hour of shrink fit operation.
In addition,, in above-mentioned the 3rd embodiment and the 4th embodiment, form first heart of axle 82The first 85A of keeper portion of axial region 82A and formation keeper 82 engages with only chimeric state, butBe not limited to this. Also can be logical in the mode identical with above-mentioned the first embodiment and the second embodimentCrossing shrink fit is combined above-mentioned the first 82A of axle portion with the first 85A of keeper portion one.
In addition, in above-mentioned the 3rd embodiment and the 4th embodiment, the first 82A's of axle portionPlane central portion is formed with protuberance 82C, and is formed with at the lower surface of the central portion of the second 82B of axle portionThe recess 85E chimeric with protuberance 82C, forms by this anti-locking mechanism 80 of rotating deviation, but also can adoptWith the anti-locking mechanism 95 of the rotating deviation shown in Figure 34.
The first inter-access piece 84a～four of cross-over connection portion 84 that, also can be in the first 82A of axle portion acrossFitting 84d (only showing the first inter-access piece 84a and the 4th inter-access piece 84d in Figure 34) separatelyFront end outer peripheral face 84C side arranges protuberance 95C, and cross-over connection portion 84 in the second 82B of axle portionOn the lower surface of one inter-access piece 84a～four inter-access piece 84d, form with protuberance 95C chimeric accordinglyRecess 95E, to replace raised part 82C and recess 85E.
According to above-mentioned embodiment, have along direction of rotation effect the first inter-access piece 84a of maximum, force～The anti-locking mechanism 95 of rotating deviation is set on the position of the 4th inter-access piece 84d, therefore, can obtains more powerfulThe effect of rotation stopping.
In addition,, in above-mentioned the 3rd embodiment and the 4th embodiment, keeper 85 is fixed in to the moonOn mould 30, form this keeper 85 by the first 85A of keeper portion and the second 85B of keeper portion, butAlso above-mentioned former 30 and the first 85A of keeper portion can be integrally formed.
,, in this mode of texturing, as shown in Figure 35, Figure 36, use former 30 and first is protectedThe base keeper 98 that the 85A of gripping member portion forms. In addition, in above-mentioned base keeper 98Perimembranous maintains described the first 82A of axle portion. In addition, be connected with at the upstream side of base keeper 98Above-mentioned the second 85B of keeper portion and the second 82B of axle portion.
In addition, in this mode of texturing, for above-mentioned the 3rd embodiment, the 4th embodiment phaseSame structure and identical member mark identical symbol.
According to this mode of texturing, roughly the same except obtaining with above-mentioned (1)～(5), (7)Effect outside, (9) due to use by the former 30 in the 3rd embodiment, the 4th embodimentBase keeper 98 with keeper 85 forms, therefore, can obtain intensity is further increasedAnd make component count reduce such effect.
Industrial utilizability
Extrusion die prodigiosin of the present invention to by Series of High Strength alloy, particularly so-called 7000 series thisThe utilization when hollow member that the high-strength aluminum alloy of sample forms is carried out moulding.
(symbol description)
1 cross section is the hollow material of order word shape
10 hollow material moulding extrusion dies
20 formpistons
22 axles
Forming part inside 23 section bars
Shaped projection portion inside 23B
24 cross-over connection portions
24a～24d the first inter-access piece～four inter-access piece
24C inter-access piece front end outer peripheral face
24E enlarged portion
25 keepers
26 inter-access piece maintaining parts
26A is as the inter-access piece supporting seat surface of inter-access piece butt snap-latch surface
26B cross-over connection portion limiting section
30 formers
30B section bar profile opening
35 section bars form the hole portion that uses
36 section bars form the hole portion that uses
The anti-locking mechanism of 40 rotating deviation (the first embodiment)
The 41 key inserting holes as keeper side connecting hole
The 42 key grooves as inter-access piece side slot
43 rotations prevent key
The anti-locking mechanism of 70 rotating deviation (the second embodiment)
71 keeper side connecting holes are key inserting hole
The 72 key deep holes as inter-access piece side slot
73 rotations prevent key
The anti-locking mechanism of 80 rotating deviation (the 3rd embodiment)
82 axles
82C protuberance
84 cross-over connection portions
85 keepers
85E recess
The anti-locking mechanism of 90 rotating deviation (the 4th embodiment)
The anti-locking mechanism of 91 second rotating deviation
92 protruding parts
93 holding sections

Claims (8)

1. a hollow material moulding extrusion die, comprising:
Formpiston, this formpiston by the steel billet of sending here from upstream side, formed by aluminium alloy towards downstream side push,To mold the inner side shape of hollow material; And
Former, this former is configured in the described downstream of described formpiston, and molds described hollow materialOuter shape,
It is characterized in that,
Form described formpiston by axle and discoideus keeper, wherein, described axle molds instituteState inner side shape, described keeper by described axle be configured in inner side and from outer partial to the described heartAxle keeps, and with described former butt,
Form described axle by forming part inside section bar and cross-over connection portion, wherein, described section bar inner side becomesType portion is corresponding with the inner side shape of described hollow material, and described cross-over connection portion is made up of multiple inter-access pieces,The inner peripheral surface pleurapophysis of these inter-access pieces from the outer regions of forming part inside described section bar towards described keeperGo out,
Be provided with inter-access piece butt snap-latch surface at the inner peripheral surface of described keeper, this inter-access piece butt engagingFace also engages mutually with the front end outer peripheral face difference butt of each described inter-access piece,
The front end outer peripheral face of each described inter-access piece butt snap-latch surface and each described inter-access piece is formed as to extrudingThe downstream of direction is near the such inclined plane of mold center,
Described hollow material moulding comprises the anti-locking mechanism of rotating deviation with extrusion die, and this rotating deviation is anti-Locking mechanism is arranged in the scope that spreads all over described axle and keeper, and stops axle with respect to described guarantorThe rotating deviation of gripping member.
2. hollow material moulding extrusion die as claimed in claim 1, is characterized in that,
Divide and be provided with inter-access piece and protect in the upstream portion of the described inter-access piece butt snap-latch surface of described keeperHold portion, this inter-access piece maintaining part is more side-prominent towards described center one than described inter-access piece butt snap-latch surface,And described inter-access piece is kept,
Prevented from forming described rotation with key by keeper side connecting hole, inter-access piece side slot and rotationThe anti-locking mechanism of deviation, wherein, described keeper side connecting hole is arranged on the inter-access piece from described keeperMaintaining part side spreads all in the scope of described inter-access piece butt snap-latch surface, and described inter-access piece side slot arrangesOn the line identical with the described keeper side connecting hole of described inter-access piece, described rotation prevents from inserting with keyEnter described keeper side connecting hole and inter-access piece side slot so that described axle and keeper are tied integratedlyClose.
3. hollow material moulding extrusion die as claimed in claim 2, is characterized in that,
The deep front end of described keeper side connecting hole has been made as to end deep hole.
4. hollow material moulding extrusion die as claimed in claim 1, is characterized in that,
Prevented from forming described rotation with key by keeper side connecting hole, inter-access piece side connecting hole and rotationThe anti-locking mechanism of deviation, wherein, described keeper side connecting hole runs through with the downstream from described keeperThe mode of described inter-access piece butt snap-latch surface is offered, and described inter-access piece side connecting hole is formed at described cross-over connectionPart, and be arranged on the line identical with described keeper side connecting hole, described rotation prevents from inserting with keyDescribed keeper side connecting hole and inter-access piece side connecting hole are to tie described axle and keeper integratedlyClose.
5. hollow material moulding extrusion die as claimed in claim 4, is characterized in that,
Described inter-access piece side connecting hole has been made as to end deep hole.
6. hollow material moulding extrusion die as claimed in claim 2, is characterized in that,
By shrink fit by integrated to described keeper and described axle.
7. hollow material moulding extrusion die as claimed in claim 1, is characterized in that,
Form described keeper by the first keeper portion and the second keeper portion, wherein, described firstKeeper portion is configured in described downstream, and described the second keeper portion is configured in described the first keeper portionUpstream side, and can be combined integratedly with described the first keeper portion,
Form described axle by the first axle portion and the second axle portion, wherein, described the first axle portionBe disposed at described the first keeper portion, described the second axle portion and described the second keeper portion one landformBe formed in the inside diameter of described the second keeper portion, and form the upper part of described the first axle portion,
The composition surface of described the first keeper portion and the second keeper portion is made as to tabular surface, and described in inciting somebody to actionEstablish on the composition surface except central portion separately in the composition surface of the first axle portion and the second axle portionFor the tabular surface identical with the composition surface of described the first keeper portion and the second keeper portion,
Jut and recess (85E) by polygonal shape form the anti-locking mechanism of described rotating deviation,Wherein, described jut is located at the described central portion of described the first axle portion, and towards described the second axlePortion is side-prominent, described recess (85E) be located at described the second axle portion with the connecing of described the first axle portionClose face chimeric with described jut.
8. hollow material moulding extrusion die as claimed in claim 7, is characterized in that,
Using anti-described rotating deviation locking mechanism as the anti-locking mechanism of the first rotating deviation, and arrange and described inThe anti-locking mechanism of the second rotating deviation that the anti-locking mechanism of the first rotating deviation is different,
Form the anti-locking mechanism of described the second rotating deviation by protruding part and holding section, wherein, described prominentShape portion is arranged on the inter-access piece front end outer peripheral face of each inter-access piece of described the first axle portion, and with along instituteState the long side direction of inter-access piece front end outer peripheral face and establish from the outstanding mode of described inter-access piece front end outer peripheral facePut, described holding section is formed at the described inter-access piece butt snap-latch surface of described the first keeper portion, and withDescribed protruding part engaging.
CN201380008923.5A 2012-02-10 2013-01-29 Hollow material moulding extrusion die Active CN104245172B (en)

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JP2012-027610 2012-02-10
PCT/JP2013/051832 WO2013118607A1 (en) 2012-02-10 2013-01-29 Extrusion die for forming hollow, shaped material

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WO2013118607A1 (en) 2013-08-15

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