JPS5921428A - Method and device for hot extrusion - Google Patents

Abstract

PURPOSE:To form efficiently a shape material having an unsymmetrical cross section, by preforming a semi-finished product having an open cross section and successively closing the open cross-sectional part, and combining said two steps to extrude a product having a closed cross-sectional part by one stroke. CONSTITUTION:A billet 8 heated to high temperature is pressed by an ram 7 to enter the inside of the 1st die 30 and is preformed into a product 32 by giving the billet 8 an open cross-sectional shape while it passes through the 1st extrusion hole. Directly after passing the 1st hole, the product 32 is pressd into the 2nd die 31 provided continuously to the 1st die 30 by the force of the ram 7 to close the open cross-sectional part 34 of the product 32 while it passes through the 2nd extrusion hole. That is, the other part 39 of product 32, except the part 34, is passed through the 2nd hole as it is, and the parts 44, 45 of the part 34 which are predetermined to join together are heated to be forcedly bent, and are press-welded together to perfectly close the cross section; thus the product 32 having the open cross-sectional shape is extruded from the 2nd die 31 as a product 36 having an closed cross-sectional shape.

Description

【発明の詳細な説明】 この発明は熱間押出し、方法及びその装置、特にフォー
クリフトのアウタマストの如くその一部に閉断面部を有
する異形材の加工に好適な熱間押出し方法及びその装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hot extrusion method and apparatus, and more particularly to a hot extrusion method and apparatus suitable for processing a profiled material having a closed cross section in a part thereof, such as an outer mast of a forklift.

従来の熱間押出し方法とｌ〜ては、例えば第１図〜・第
３図に示す熱間押出し装置を用いて第４図に示すような
製品を成形することが知られている１、第１図に示す熱
間押出し装置１は例えば第４図（イ）（ロ）（ハ）に示
す開断面形状の製品２　ａ　％２ｂ、２ｃを成形加工す
るもので、コンテナ３内にライナホルダ４を介してライ
ナ５を備え、ライナ５中の空間部６内へラム７にてビレ
ット８を押込み且つライナ５に隣接配置したダイス９方
向へビレット８を押圧するようにしている。Conventional hot extrusion methods include, for example, 1 and 1, which are known to mold products as shown in FIG. 4 using hot extrusion apparatuses shown in FIGS. The hot extrusion apparatus 1 shown in FIG. 1 is for molding products 2a, 2b, 2c with open cross-sections shown in FIGS. 4(a), 4(b), and 4c, for example. A liner 5 is provided through the liner 5, and a ram 7 pushes the billet 8 into a space 6 in the liner 5, and presses the billet 8 in the direction of a die 9 arranged adjacent to the liner 5.

ビレット８とＬ７てけ、例えば１１００℃〜１２５０℃
の高温に予め加熱された鋼材が採用され、ダミーブロッ
ク１０を介してラム７でダイス？方向へ押圧するが、こ
の押圧に際し７てビレット８とシイナ５及びダイス９間
にガアス質潤滑剤１１の被膜を介在させるものであり、
同被膜の存在により断熱作用及び潤滑作用を同時に行な
わしめ、装置及び製品の損傷を防ぐものである３、そし
てダイス９を通過させるに当りビレット８にはダイス９
の押出し孔１２の形状に応じた開断面形状が付与され細
長く押出されて製品化される。このだめのダイス９は第
３図で拡大図示する如く押出し孔１２を備える超硬合金
製のチップ１６、このチップ１６を保持する鋼製のケー
シング１４及びダイホルダ１５、並びにダイハラ、／７
１６等より構成されている。Billet 8 and L7 temperature, e.g. 1100℃~1250℃
A steel material preheated to a high temperature of During this pressing, a film of gaseous lubricant 11 is interposed between the billet 8, the sheath 5, and the die 9,
The presence of this coating simultaneously performs a heat insulating effect and a lubricating effect, thereby preventing damage to equipment and products.
An open cross-sectional shape corresponding to the shape of the extrusion hole 12 is given, and the product is extruded into a long and thin shape. As shown in an enlarged view in FIG. 3, this receptacle die 9 includes a cemented carbide chip 16 having an extrusion hole 12, a steel casing 14 that holds this chip 16, a die holder 15, and a die hara.
It is composed of 16 mag.

一方、閉断面形状の製品１７ａ、１７ｂ、１７ｃ〔第４
図に）（ホ）（へ）〕は第２図の如き熱間押出し装置１
８を使用して成形するようにしている。即ち、中空ビレ
ット１９とマンドレル２゜を使用し、このマンドレル２
ｏをダイス２１内に臨ませることにより、製品１７Ｂ、
１７ｂ、１７　ｃ　Ｋ閉１＋ｊｉ　＋ｎ’ｉ部２２全２
２するものである・その他に−２）いでは第１図の装置
と略同様につき同一＝看等（（分に同じ符号を示すに止
め重複説明は省略する。On the other hand, products 17a, 17b, 17c [fourth
In the figure) (E) (F)] is a hot extrusion device 1 as shown in Figure 2.
8 is used for molding. That is, a hollow billet 19 and a mandrel 2° are used, and this mandrel 2
By placing o in the die 21, products 17B,
17b, 17c K closed 1+ji +n'i part 22 total 2
2.Others -2) Since it is substantially the same as the apparatus shown in FIG. 1, it is the same as the apparatus shown in FIG.

し、かし７ながら、このような従来の熱間押出し方法及
びその装ｆ６にあっては、製品断面が対称的な形状を有
するものであれば開断面形状の製品２ａ、２ｂ、２Ｃ１
閉断面形状の製品１７ａ１７ｂ、１７ｃを問わず成形が
容易・確実であるも（Ｑの、製品断面が非対称の異形材
でしかもその一部に閉断面部を不する製品、例えば断面
が第５図（イ）で示すようなフォルクリットのアウタマ
スト２６、の成形には不向きである。即ち、第２図で示
“Ｊような装置及び方法では、ダイス２１内に臨１せた
マンドレル２０の存在により製品１７８．１７ｂ、１７
ｅの閉断面部２２に於ける開［−１部分２４を加工する
ことになるが、第５ト１（イ）で示ずようなアウタマス
ト２６は非対称の断面を・有し、その閉断面部２５に於
ける開口部分２６の中心Ｃが非対称断面形状全体から見
て大幅に偏心−１〜ているため、アウタマスト２６の形
状に合わせたダイス２１の押出し孔１２内にマンドレル
２０を臨まぜる際、マンドレル２０は押出し孔１２全体
の中心には位置決めできても前記中心Ｃには位置決め困
ＩＡｔであり仮１無理して位置決めしてもマンドレル２
０の先端には偏心に因３拐れが発生し７、第５図（ロ）
で想像線にて示すように閉断面部２５内に異なる中心で
開口部分２６ａが加工され製品にバラつきが発生してし
まうという問題点がある。これを解決するには、閉断面
部２５とその他の部分とを分けて各々熱間押出し成形し
、その後別工程で溶接にて一体化することも可能ではあ
るが、溶接工程が必要になり、しかも製品が成る程度長
さの長いものであれば溶接歪の発生も無視できなくなる
という別の面での不具合がある。However, in such a conventional hot extrusion method and its equipment f6, if the product cross section has a symmetrical shape, the products 2a, 2b, 2C1 with an open cross-sectional shape
Although it is easy and reliable to form products 17a, 17b, and 17c with a closed cross-sectional shape (see Q, a product with an asymmetrical cross-section and a part of which does not have a closed cross-section, for example, the cross-section shown in FIG. 5) It is not suitable for forming the outer mast 26 of Volkrit as shown in (a).In other words, the apparatus and method as shown in FIG. Product 178.17b, 17
The opening [-1 part 24 in the closed cross-section part 22 of e is to be machined, but the outer mast 26 as shown in 5th To 1 (a) has an asymmetric cross-section, and the closed cross-section part Since the center C of the opening portion 26 in the outer mast 25 is significantly eccentric -1 when viewed from the overall asymmetric cross-sectional shape, when the mandrel 20 is placed in the extrusion hole 12 of the die 21 that matches the shape of the outer mast 26, Even if the mandrel 20 can be positioned at the center of the entire extrusion hole 12, it is difficult to position it at the center C.
At the tip of 0, there was a breakage due to eccentricity 7, Fig. 5 (b)
As shown by the imaginary lines, the opening portions 26a are formed at different centers within the closed cross-section portion 25, resulting in a problem that variations occur in the product. To solve this problem, it is possible to separately hot-extrude the closed cross-section section 25 and other parts and then weld them together in a separate process, but this would require a welding process. Moreover, if the length of the product is long enough, there is another problem in that the occurrence of welding distortion cannot be ignored.

この発明は、このような従来の熱間押出し方法及び装置
の問題点に着目してなされたもので、開断面部を有する
製品をまず予備成形１〜、次いで開断面部の閉断面化を
行ない最終的に閉断面部を有する製品を一度の押出（２
で同時に成形することにより、非対称断面の異形材でし
かもその一部に閉断面部を楢するフォークリフトのアウ
タマストの如む製品を効率よく且つ確実に成形すること
を目的としている。This invention was made by focusing on the problems of the conventional hot extrusion method and apparatus, and involves first preforming a product having an open cross section, and then converting the open cross section into a closed cross section. Finally, a product with a closed cross section is extruded once (2
The purpose is to efficiently and reliably form a product such as an outer mast of a forklift that is a profiled material with an asymmetric cross section and has a closed cross section in a part thereof.

−そし、でより具体的には、この発明に係る熱間押出し
方法（第１発明）は、先ず開断面形状の第１押出１．孔
付きの第１ダイスにビレットを通過ぜし７めて開断面部
を有する製品とし、次いでその自復に閉断面形状の第２
押出し孔付きの第２タイスに通過せ］−７め開断面部の
閉断面化による閉断面部含有する製品とし、て最終成形
することを特徴ど１−７ている　ｙこの発明に係る熱間
押出し２装置（ｍ、’　２発明）は、ビレットに形状を
付方するダイスを予備成形用の第１ダイスと最終成形用
の第２ダイスとで構成し、第１ダイスにｔ−を開断面形
状を有する第１押出し孔を設Ｃ，，ｌ、そしイＴ第２ダ
・イスｉ／７−け閉断面形状を有し−１１つ第１押出Ｉ
２孔通過後の製品の開断面部を閉断面化せ）７め２〕第
２．押出［−札を設置Ｙたととを特徴とし、ている。更
にこの発明に係る熱間押出し装置（第３発明）Ｖｉ、前
記第２発明にカッターを組合わせたもので、第１グ・イ
スと第２タイスの間に、第２ダイスにて閉断面化（えし
める第１押出１．孔通過後の製品の接合予定部位−＼カ
ッターを当接自在にして介在設置しＡ二ことを特徴とｌ
−、ている。- And, more specifically, the hot extrusion method (first invention) according to the present invention first involves first extruding 1. The billet is passed through a first die with holes to form a product with an open cross section, and then a second die with a closed cross section is passed through the die.
Passing through a second tie with an extrusion hole]-7 The product contains a closed cross-section by turning the open cross-section into a closed cross-section, and is finally formed. The extrusion 2 device (m,' 2 invention) consists of a first die for preforming and a second die for final forming as dies for giving a shape to the billet, and the first die has a T-open surface. A first extrusion hole having a shape C,,l, and a second die I/7-1 having a closed cross-sectional shape are provided for the first extrusion I.
After passing through the 2 holes, convert the open cross-section of the product into a closed cross-section) 7th 2] 2nd. Extrusion [-- is characterized by the fact that the tag is installed. Furthermore, a hot extrusion device (third invention) Vi according to the present invention is a combination of the second invention with a cutter, and a closed section is formed between the first die and the second die by the second die. (First extrusion for tightening 1. Part where the product is to be joined after passing through the hole - A cutter is installed so that it can freely come into contact with it A2)
-, there is.

以下詳Ｋ（１１を説明するが、説明の便宜上図面を参照
して熱間押出し装置、（第２発明、第３発明）の説明を
行ない熱間押出し７方法（第１発明）についてはそのつ
と必要に応じて＋Ｊ言Ｊるものと−ず　る　。Details K (11) will be explained below, but for convenience of explanation, the hot extrusion apparatus (second invention, third invention) will be explained with reference to the drawings, and the seven hot extrusion methods (first invention) will be explained in detail. +J words and comments as necessary.

第６図−第９図は第２発明に係る熱間押出し装置′の一
実施例を示す図である。筒、以ドでｅま従来と同一部分
を同一符号で示すものと１２、重複説明は省略する。又
、従来の説明で−、ダイス９．２１とチップ１６を分け
て示しだが、以Ｆでは判り易くするために１−チップ」
それ自体をダイスとして説明する。6 to 9 are diagrams showing an embodiment of the hot extrusion apparatus' according to the second invention. Hereinafter, parts that are the same as those in the prior art are designated by the same reference numerals, and redundant explanation will be omitted. Also, in the conventional explanation, die 9.21 and chip 16 are shown separately, but hereafter, for the sake of clarity, they are shown as 1-chip.
Describe itself as a die.

コンテナ６内にライナホルダ４を介して備えられたライ
ナ５に対して隣接配置されている「々゛イス２’ｌｔ予
備成形用の第１ダイス６゜＜’、１′１ｉ：　Ａ”ｉ　
、１．＋ｋ　、Ｉｌと、１１　（１）ａ＋Ｅ　”　、”
’　４　ス３１　トチｌ　Ｋ　ｔｆ？　成す７１コいる
１、第１ダイス３０は予備成形すべき製品６２０″１λ
７図（ｒ）１の形状に応じた開断面形状２じ１Ｔ−Ｊ″
るａ、′１　＋押出し孔６６を備えている〔第７１−２
１回（・→〕１．製晶６２〔第７図（イ）〕は、全体の
断面形状が非対称でその一部に次工程で閉断面化ずべき
開断面部ろ４を有している。尚、以１及び以−トの贋、
ヴ１に於いて［開断面Ｊとは断面形状の中に閉ざさＦ１
／ζ開口部分がなく、又逆に「閉ｉＪｊ面＋　、’＝（
、−、Ｌ断面形状の中に閉ざされた開口部分がある。鳴
合を；ａ味し、断面形状の一部にでも閉さ゛さ′１１だ
開［コ部分が存在すればその断面形状の全体を「閉断面
形状の・・・」と称することにする。A first die 6゜<', 1'1i: A''i for preforming the first die 2'lt, which is arranged adjacent to the liner 5 provided in the container 6 via the liner holder 4.
, 1. +k, Il and 11 (1)a+E ”,”
'4 S31 Tochil K tf? There are 71 pieces to form 1, the first die 30 is the product to be preformed 620″1λ
Open cross-sectional shape 2 1T-J'' according to the shape of Figure 7 (r) 1
a, '1 + extrusion hole 66 [No. 71-2
1. Crystallization 62 [Fig. 7 (A)] has an asymmetrical cross-sectional shape as a whole and has an open cross-section filter 4 that should be closed in the next step. .Furthermore, if the above 1 and below are fake,
In V1, [open section J is closed section F1 in the cross-sectional shape
/ζThere is no opening part, and conversely, there is a "closed iJj surface + ,'=(
, -, There is a closed opening in the L cross-sectional shape. If there is a closed section in even a part of the cross-sectional shape, the entire cross-sectional shape will be referred to as a "closed cross-sectional shape...".

従って第１・ｌｌｆ：出し孔６ろにはそのマウス部６６
！Ｌ、アノ゛ロ〜チ部６６ｂ１ベアリング部３６ｃ及び
１７９−）部３３ｄの全体にわ／Ｃって「開断面形状」
の製品６２を予備成形すべき形状のみ付与さ１１−でい
る。、 一方、第２ダイス６１は最終成形すべき製品６６〔第８
図（イ）〕の形状に応じた閉断面形状を有する第２押出
し孔６７を備えている〔第８図（ロ）（ハ）〕。より詳
細にＬ↑、この第２押出し孔６７は第１押出し孔６３通
過後の製品３２の一部にある開断面部３４を閉断面化せ
しめる部分６８と、特に他の形状を伺与することなくそ
のまま開断面部６４以外の製品６２の部分６９を通過さ
せる部分４０とを備え、画部分６８．４ｏは各々マウス
部６８！Ｌ、４０ａ、アプローチ部６８））、４０ｂ、
ベアリング部６８ｃ、４０ｃ及びリリーフ部３８ｄ、４
０ｄを有している、そして第２押出し孔６７の部分３８
には熱源４１（第６図）が臨１　辻”ＣＴｏる。即ち、
第６図及び第８図（ロ）（ハ）で示すように、この部分
６８のアプローチ部３８ｂに設けた細孔４２に熱源４１
〔例えばレザービーム乃至目、電子ビームの発振源〕よ
り発振されたビーム４６が照射自在としてあり、アプロ
ーチ部６８１）を通過する製品６２の接合予定部位４４
．４５をその材料の融点近くまで例えば１０００℃を１
５（１０ｃ近辺に迄加熱できるように［７である６、 次１．て作用を説、ト１りする。Therefore, the first llf: The mouse part 66 is located behind the outlet hole 6.
! L, Anonymous part 66b1 bearing part 36c and 179-) part 33d as a whole has an "open cross-sectional shape"
Only the shape to be preformed is given to the product 62 at 11-. , On the other hand, the second die 61 is used to form the final product 66 [8th die].
The second extrusion hole 67 has a closed cross-sectional shape corresponding to the shape shown in FIG. 8(B) and FIG. 8(C). In more detail, L↑, this second extrusion hole 67 has a part 68 that turns the open cross-section part 34 in a part of the product 32 after passing through the first extrusion hole 63 into a closed cross-section, and in particular, it has another shape. A portion 40 through which a portion 69 of the product 62 other than the open cross-section portion 64 passes without any change, and each image portion 68.4o has a mouse portion 68! L, 40a, approach part 68)), 40b,
Bearing parts 68c, 40c and relief parts 38d, 4
0d and the portion 38 of the second extrusion hole 67
The heat source 41 (Fig. 6) is located at the first point.
As shown in FIGS. 6 and 8(b) and 8(c), a heat source 41 is inserted into the pore 42 provided in the approach portion 38b of this portion 68.
A beam 46 oscillated from [for example, a laser beam, an eye, or an electron beam oscillation source] can be irradiated freely on the part 44 of the product 62 to be joined, which passes through the approach section 681).
．． 45 to near the melting point of the material, for example at 1000°C.
5 (6, which is 7) so that it can be heated to around 10c.

高温加熱さＡ１だビレット８はツノ・７に押圧さｔｌで
先ず第１グイス６０内に入り第１押出し孔６３をマ・ン
ス部６６ａ、アプローチ部３３ｂ、ベアリング部３３ｃ
へと通過する間に開断面形状がイ・ｊ／−）されて製品
６２として予備成形される。The billet 8 heated to a high temperature A1 is pressed by the horn 7 and first enters the first pin 60 and the first extrusion hole 63 is inserted into the machine part 66a, the approach part 33b, and the bearing part 33c.
During the passage, the open cross-sectional shape is shaped and preformed as a product 62.

リリーフ部３３ｄを通過した後、即ち第１ダイス３　Ｄ
　、：ｉＴｈＴｈ過員細長出さｔた製品３２は、そのｉ
Ｆｔ後に、同じくラム７の押圧力によって第１ターイス
６０と連続的に設けである第２ダイス６１内へと進入１
２、第２押出し孔６７を通過する間に製品６２の間断面
部５４が閉断面化されど）。即ち　製品６２の開断面部
６４以外の部分６９は第２押出し孔６７の部分４０をそ
の′￥ｔｉｔ涌過楼［２，めらＪＬ、開断面部６４は第
２押出し２孔６７の部分３８に於いて、そのマウス部３
８　ａかＣ）アブｏ　−５一部３８ｂに到り接合予定部
位４４．４５が熱綽４１にて加熱されつつ、第９図で】
Ｊ、ず、Ｌうに矢示Ａ方向へと強制的に曲折せ［２めら
れ、且つベアリング部３８ｃＫ到りて接合予定部位４４
．４５同士は相互に圧接することが強いられて、いわば
溶着し接合一体化することにより最終的には完全に閉断
面化されて、前記開断面部６４が閉断面部４６となり、
前記開断面形状の製品３２　ｉ、ｔ、閉断面形状の製品
３６とし２て第２押出し孔６７のリリーフ部３８ｄ、４
０ｄ、即ち第２ダイス６１から押出さねてゆくことにな
る。、尚、４７か溶水１−７た接合部を示す・ 第１０図〜第１２図は第３発明に係る熱間押出し装置の
一実施例を示す図である。この実施例は第２発明の実施
例（第６図〜第９図）に対し第１ダイス３０と第２ダイ
ス６１間にカッター５０を設けでいる他は略同様の構成
のものなので、同一部分を同一符号で示すことにより重
複説明を省略し異なる部分についＣ主に説明する。After passing through the relief part 33d, that is, the first die 3D
, :iThThThe overpopulated elongated product 32 is its i
After Ft, the pressing force of the ram 7 causes the second die 61 to enter the second die 61, which is provided continuously with the first die 60.
2. While passing through the second extrusion hole 67, the intermediate section 54 of the product 62 becomes a closed section). That is, the part 69 of the product 62 other than the open section 64 is the part 40 of the second extrusion hole 67, and the open section 64 is the part 38 of the second extrusion hole 67. In this case, the mouse part 3
8a or C) When reaching the part 38b of Abu O-5, the parts 44 and 45 to be joined are heated in the heat oven 41, and as shown in Fig. 9]
J, Z, L are forcibly bent in the direction of arrow A.
．． 45 are forced to come into pressure contact with each other, so to speak, and are welded and joined together, so that the cross section is completely closed, and the open cross section 64 becomes the closed cross section 46,
The product 32 i, t with the open cross-section shape, and the relief portions 38d, 4 of the second extrusion hole 67 as the product 36 with the closed cross-section shape.
0d, that is, the extrusion from the second die 61 continues. 10 to 12 are diagrams showing an embodiment of the hot extrusion apparatus according to the third invention. This embodiment has substantially the same structure as the embodiment of the second invention (FIGS. 6 to 9) except that a cutter 50 is provided between the first die 30 and the second die 61, so the same parts are used. By indicating them with the same reference numerals, redundant explanation will be omitted, and the different parts will be mainly explained.

第１ダイス６０の出側には、そのケーシング５１にネジ
５２止めすることによりツノツタ−５０が取イ・１けら
−）１でいる、このカッター５０は２ｈ“の刃部５６を
有し２、第１ダイス６０より押出さノＩ了来る製品３２
の次工程で閉断面化させど）間断１ｆｒｉ部５４　Ｇ−
）接合予定部位４４．４５へ当接自在（′こ一位（１′
？決Ｍ）されておυ、面１熱性及び耐摩性のｔ）る素ｔ
ｔ−にて形成されている。５４はカッ々−ホ７１−ダで
、前記ネジ５２挿入孔５５を備え、刃部５３の手前側（
第１２同右（ＩＩＩ　）　ｌ／こｔ：Ｆ切屑５６取出り
、、　Ｊｌ’＋の開［１５７を備えている。この開［１
５７はり′ｆホノ１ダ５８に設けた同じ切屑５６取出し
川の開［−＋　５９に連接しである（第１０図）。On the exit side of the first die 60, a horn cutter 50 is attached to the casing 51 by fixing a screw 52 to the casing 51. Product 32 extruded from the first die 60
In the next process, the cross section is closed) 1fri section 54 G-
) Can freely contact the planned joining site 44.45 ('This first position (1')
? Determination M) has been made υ, surface 1 heat resistance and abrasion resistance t) material t
It is formed at t-. Reference numeral 54 denotes a cutter 71-da, which is provided with the screw 52 insertion hole 55 and is located on the front side of the blade portion 53 (
12th same right (III) l/kot: F chip 56 removal, Jl'+ opening [157 is provided. This opening [1
57 Beam 'f' is connected to the same chip 56 retrieval opening [-+ 59] provided on the holder 58 (FIG. 10).

尚、６０１１スベ−ザで、ダイオルダ５８内の第１々゛
イス３０及び第７２ダイス６５間にカッター取付（・）
−スペースを確イ１に１−８２ている１、次に作用全説
明する。In addition, with the 6011 smoother, install the cutter between the 1st die 30 and the 72nd die 65 in the die holder 58.
- Make sure the space is 1-82, then the full effect will be explained.

第１り゛イー１．３０にで予備成形された製品６２υ丁
、その−、ｔｊ、ｌ（ｔｌ’ｉニー接合予定部位４４．
４５のある開断面部ろ４肴−イ１し７ている状態で第１
ダイス３０より押出さＪし次いでカッター５０の刃部５
６に−ｆ１〆合予定部位４４．４５の表皮並びにそこに
付着しているガラス質潤滑剤１１の被膜６１〔第１１図
、第１２図〕が切除され、その切屑５６は開１−１５７
．５９を経て外部に順次取出される。そしてこの人皮と
被’ｉ’Ｊ　６１の切除が連続的に行なわれつつ、製品
３１よ第２ダイス６１へ押圧にて送り込寸れ、そ仁で接
合予定部位４４．４５が熱源４１にて加熱されつつ強制
的に圧接され溶着し合い接合一体化して前記開断面部６
４を閉断面化（７、最終的ＶＣは閉断面部４６を有する
製品６６として第２ダイス６１より押出されてゆくこと
になる１、 尚、第１発明に係る熱間押出１２方法にあって姐、第６
図・・第９図で示した熱間押出し７装置又は第１０図〜
第１２図（η−示しだ熱間押出し装置を使用することに
より　その１−１的を達成できるが、＠１ダイスろＯ及
び第２ダイス６１を図示のものに特定するものではなく
、ビＬ／ソトを開断面形状の製品として予備成形し７、
次いで　イの直後に、開断面部の一部を或Ｃ１１、−そ
の全部−２間断面化せしめることができ７１．げ、じの
、ｊ′″ｉ　：、’−１←（７゛（、＋！・１′、パ）
−ｆパでも採用できるものである。62 υ pieces of the product preformed in the first Rii 1.30, its -, tj, l (tl'i knee joint area 44.
Open section filter 4 with 45 - 1 and 7
It is extruded from the die 30 and then cut into the blade part 5 of the cutter 50.
6, the epidermis of the area 44.45 where -f1 is to be joined and the coating 61 of the vitreous lubricant 11 attached thereto (FIGS. 11 and 12) are removed, and the chips 56 are removed from the opening 1-157.
．． 59 and are sequentially taken out to the outside. While this human skin and the subject 'i'J 61 are continuously excised, the product 31 is fed into the second die 61 by pressure, and the parts 44 and 45 to be joined are exposed to the heat source 41. The open cross-section portion 6 is forcibly welded and welded together while being heated.
4 into a closed cross section (7, the final VC is extruded from the second die 61 as a product 66 having a closed cross section 46). Sister, 6th
Figure: Hot extrusion 7 device shown in Figure 9 or Figure 10 ~
Although objective 1-1 can be achieved by using the hot extrusion device shown in Figure 12 (η-), the / Soto is preformed as a product with an open cross section7.
Immediately after step (a), a part of the open section can be made into a section between C11 and all of it between 71 and 2. Ge, Jino, j′″i:,'-1←(7゛(,+!・1′, Pa)
-F PA can also be adopted.

１・ｊ、（、：（、ｙ　１ｊｌｌ　（−（、・Ｎ７°こ
よ・）（・ζ、この発明によればｌｊ’（１ｊ＋・、１
す（１，・、１．　Ｊ　、　／ｊ−ビし・ットを第１ダ
イスにで先ず開［・＋ｉ　１ｉ＋ｉ　Ｂ１シ、ｊ：　（
ｒ−ｒろ８；（２品に予備成形し、次いで・ぞのｌｌ′
＋１を゛（・（−４，２々’　−１’　、−、、Ｋ　ｉ
（二て開断面部全閉断面化した間断１目］部１・ｔきの
ｔＱ品とじて最終成形−４−ることと１　（第１−（、
明）、２”−□、・′）ような熱間押出し方法を””’
ｌ’　ｔｌｌ、（とイーど、／、？；）９イｉ−（’Ｃ
ＩＭ接配置さｈ／ｌダイス’：Ｉ、１（ｆ１断ｉｔ＋ｉ
　ｌｉ′状ンー有ｊ′る第１押出し孔伺きの第１な゛了
スと閉１９ｉ　＋！ｉ＋形状を有し且つ第１押出し２孔
：＋ｎ　、ｉ／、％　ｒ父の物品の間断＋に−ｉ部を閉
断面化せしめる第２４１ｔｌ　出１−．　ｆｌ、、　ｆ
−１キｔ、パ）＋’Ｊ”　２　＜：’　（ｙ、　ト−Ｃ
Ｉ’ｍ　成−ｆ　ルモノ、Ｌ：　Ｌ　（；４’、　２発
１↓Ｉ）、更（こ第１ダイスと第２ダイス間には第：２
ダイス（こで閉断面化せｌ、　ｄ＞る第１・叩出し、ｒ
Ｌ　、ｉ＋ｆｉ渦後の製品の接合予定部位・＼当接自〆
「ｌ・・−Ｌ２でカッ々−を介在設置するようＧ′こし
ただめ（第：３発明）、従来極めて困娃か不可能に近／
）・−ジ人用＋Ｊｒｉｌｉｊ書対称形状の異形イー（で
はつその一部に閉１ネノＴ　ｏ’ｕ　、Ｊｔ　（？）　
ｔｔ＞　；ｓ　２Ｆ）　ｒｔ−ｉ’＋　ヲ効”６−Ｌ：
　＜　’６Ｍ　実Ｋ　’Ｉｌ−続Ｌ／て成形でき、押出
される製品の閉断面部の中心に狂いがなく高品質の製品
を得ることができるという大きな効果がある。１〜かも
第２ダイスにて閉断面化すべき部分の接合予定部位を、
予めその素材の融点近辺まで加熱するようにすれば接合
予定部位同士の圧接・溶着をより一層容易に行なうこと
ができ、この加熱と溶着処理ｔｉ熱間押出し工程中で行
なわれるので、累月温度が既に相当高められていること
もあり熱勾配がゆるやかで、製品に与える加熱、溶着の
熱影響も少なく、加熱熱鍛もそれ程要求されずその分コ
ストも低減化できるという効果もある７、更圧カッター
を採用して接合予定部位の表皮並びにそこに伺着してい
るガラス質潤滑剤の被膜を予め切除すること罠より、い
わば不純物を除いた素地同士の圧接・溶着が期待できよ
り一層開断面部の閉断面化を確実に達成できるという効
果がある。加えて、製品形状によっては従来必要視され
たマンドレルを省略することもでき、その場合は中空ビ
レットに代えて−Ｚンドレル挿入孔のないビレットを採
用でき一度の押出し駿を大きくｒ−ど・ことが７１１ロ
ｉヒであり、マンドレルの強度５・−Ｊ５ｊ・、１酬Ｊ
−ヘ・こ、１１もなく、閉断面部の開［１０太きへ６−
ｎ山に１没定できるという効果もある。1・j, (,:(,y 1jll (−(,・N7°koyo・)(・ζ, according to this invention lj'(1j+・,1
(1, ・, 1. J, /j-bit on the first die first [・+i 1i+i B1 shi, j: (
r-r filter 8; (preform into two products, then
+1 ゛(・(-4,2'-1' ,-,,K i
(Secondly, the open cross-section becomes a completely closed cross-section, 1st interval) Final forming of the tQ product of part 1 and t -4- and 1 (1st-(,
2"-□,・') hot extrusion methods such as
l' tll, (and Eido, /,?;)9ii-('C
IM contact placed h/l dice': I, 1 (f1 cut it+i
19i +! 241tl Extrusion 1-, which has an i+ shape and has two holes in the first extrusion: +n, i/, % r, which makes the -i part a closed section in the interval + of the father's article. fl,, f
-1 kitt, pa)+'J' 2 <:' (y, to-C
I'm formation-f Lumono, L: L (;4', 2 shots 1↓I), further (between the first die and the second die is the second:
Die (make the cross section closed with this, d＞ru first punch out, r
L, i + fi The part where the product is to be joined after the vortex. Close to possible/
)・-Jrilij for people + Jrilij book Symmetrically shaped variant E (So part of it is closed 1 Neno T o'u, Jt (?)
tt>;s 2F) rt-i'+ wo effect"6-L:
<'6M Actual K'Il-Continued L/It has the great effect of being able to form a high-quality product without any deviation in the center of the closed cross-section of the extruded product. From 1 to 2, the planned joining area of the part to be closed cross-sectioned with the second die is
If the materials are heated in advance to near their melting point, the parts to be joined can be pressure-welded and welded more easily.This heating and welding process is performed during the hot extrusion process, so the cumulative temperature Since the temperature is already considerably high, the thermal gradient is gentle, the thermal effects of heating and welding on the product are small, and heating and hot forging are not required as much, which also reduces costs. Rather than using a pressure cutter to cut out the skin of the area to be joined and the film of glassy lubricant adhering to it in advance, it is possible to press and weld the substrates together without any impurities, which is more effective. This has the effect of reliably achieving a closed cross section. In addition, depending on the shape of the product, it is possible to omit the conventionally required mandrel, and in that case, a billet without a -Z mandrel insertion hole can be used instead of a hollow billet, making it possible to increase the number of extrusions per extrusion. is 711 Roihi, the strength of the mandrel is 5・-J5j・, 1 reward J
-He/Here, there is no 11, the opening of the closed section [10 thicker 6-
It also has the effect of being able to place one on the n mountain.

４　［”、１面の伍）ノ１１な評、四 糖１　Ｌ：′曜にび第２しｌ　＆、ｌ、熱間押出し装置
の従来例を各々示寸断＋ｒ１７　Ｉ！３］、 第３図（・、ｒ第４図に示す装ｆｄの要部拡大断面図、
第１図（イ）（■ｌ）（ハ）←ｔ　ｆ！ｌ断面形状の、
そして同に）（ホ）（へ）（・１間断曲形状の製品例を
各々示す側面図、第５１”ンｌ　（イ）回は１゛ツ１断
部をその一部に有する非対称断面形状の製品例を各々示
す側面図、〜′〜６　ｊＶ］−第１叫ｊ？Ｊ　１４この
発明（第２発明）に係ω熱間押出１−、装置１−“Ｌの
一実施例を示すもので、第６］゛・′］はその全体の断
面図、第７図（イ）は予備成形品の仙凹図、第７図（ロ
）は第１ダイスの正面図、第７Ｌ図（ハ）は第７図（ｒ
Ｔ）中の矢示ノ・−７・線に沿う断面１゛Ｚ１、第８　
［゛、＋　（イ）は最終成形品の側面図、第８図（ロ）
は第２グイスの止面１゛２１、第８図（ハ）は第８図（
ロ）中の失小・・−・・線Ｕ′（＝γ１）う断面図、第
９図は製品の開断面部の閉１１Ｊｉ面化状態を示す説明
図、第１０図〜第１２図はこの発明（第３発明）に係る
熱間押出し装置の一実施例を示すもので第１０図番づそ
の全体の断面図、第１１図Ｃ１その要部の拡大断面図、
そして第１２図は第１１図の矢示刈線方向より見たカッ
よ−と製品の接合予定部位との位置関係を示す説明図−
ζある。4 ['', 1st page 5) ノ 11 reviews, Tetrasaccharide 1 L:'Yonabi 2nd Shil &, l, Cutting each conventional example of hot extrusion device into pieces +r17 I!3], 3rd Figure (・, r An enlarged sectional view of the main parts of the FD shown in Figure 4,
Figure 1 (a) (■l) (c)←t f! l cross-sectional shape,
And the same) (E) (F) (・Side view showing each example of a product with a 1-part bent shape, 51"nl (A) is an asymmetrical cross-sectional shape with a 1-1 section as a part of it. Side views showing respective product examples of ~'~6 jV]-1st scream j?J 14 Showing one embodiment of ω hot extrusion 1- and apparatus 1-"L according to this invention (second invention) 6]゛・'] is a sectional view of the whole, FIG. 7(A) is a concave view of the preform, FIG. c) is shown in Figure 7 (r
Cross section 1゛Z1, 8th along the arrow No. -7. line in T)
[゛, + (A) is a side view of the final molded product, Figure 8 (B)
Figure 8 (C) shows the stop surface 1゛21 of the second guide pin, Figure 8 (C)
B) Loss of size in the middle... Line U' (= γ1) sectional view, Figure 9 is an explanatory diagram showing the closed 11Ji surface state of the open cross section of the product, Figures 10 to 12 are An embodiment of the hot extrusion apparatus according to the present invention (third invention) is shown in Fig. 10, which is an overall sectional view of the device, and Fig. 11, C1, which is an enlarged sectional view of the main part thereof.
FIG. 12 is an explanatory diagram showing the positional relationship between the cutter and the planned joining area of the product as seen from the direction of the arrowed cutting line in FIG. 11.
There is ζ.

２ａ、２ｂ、２Ｃ・・　開断面形状の製品６　　　　　
　　・・・　コンブナ ５　　　　　　　　・・　ライナ ７　　　　　　　・・・　ラム ８　　　　　　　・・　ビレット ９　　　　　　　・・・　ダイス １１　　　　　　・・・　ガラス質潤滑剤１２　　　　
　　・・・　押出し７孔 １７ａ、１７１）、１７　ｃ＝　　閉断面形状の製品２
０　　　　　　・・・　マンドレル ２６　　　　　　　　　　・・・　　ツメ−クリットの
アウター７スト２５　　　　　　・・・　閉断面部 ６０　　　　　　・・・　第１ダイス ６１　　　　　　・・・　第２ダイス ３２　　　　　　・・・　予備成形した製品６３　　　
　　　・・・　第１押出ｌ、７孔６４　　　　　　・・
・　開断面部 ６６　　　　　　・・・　最終成形した製品６７　　　
　　　・・・　第２押出し孔４１　　　　　　・・・　
熱源 ４４．４５　　　・・・　接合予定部位４６　　　　　
　・・・　閉断面部 ５０　　　　　　・・　カッター ５６　　　　　　・・・　刃部 ５６　　　　　　・・・　切屑　□ ５７　　　　　　・・・　切屑取出し用の開口６１　　
　　　　・・・　ガラス質潤滑剤の被第２図 第３図 （］）（０口　　　　（ハ） 第５１°１１ （イ）　　　　　　　　　　　　　　（ロ）第６図2a, 2b, 2C... Open cross-section product 6
... Combuna 5 ... Liner 7 ... Ram 8 ... Billet 9 ... Dice 11 ... Glassy lubricant 12
... 7 extrusion holes 17a, 171), 17c = Product 2 with closed cross-section shape
0... Mandrel 26... Outer 7th stroke of claw-crit 25... Closed cross-section portion 60... First die 61... Second die 32... Preformed product 63
... 1st extrusion l, 7 holes 64 ...
- Open cross section 66...Final molded product 67
... Second extrusion hole 41 ...
Heat source 44.45 ... Part to be joined 46
... Closed section 50 ... Cutter 56 ... Blade section 56 ... Chips □ 57 ... Opening 61 for removing chips
... Vitreous lubricant coverage Fig. 2 Fig. 3 (]) (0 mouth (c) No. 51°11 (a) (b) Fig. 6

Claims (3)

【特許請求の範囲】[Claims] （１）　　高温加熱したビレットの後端を押圧してダイ
スを通過せし７めダイス孔に対応する形状を付Ｉテシた
製品を成形する熱間押出し方法に於いて、 前記ビレットを、先ず開断面形状の第１押出し荘付きの
第１ダイスを通過させて、開断面部を有する製品として
予備成形し、 次いで、その直後、閉断面形状の第２押出し孔付きの第
２ダイスを通過させて、前記開断面部を閉断面化し７★
閉断面部を有する製品と１７．て最終成形することを特
徴とする熱間押出し２方法。(1) In a hot extrusion method in which the rear end of a billet heated to a high temperature is pressed to pass through a die to form a product with a shape corresponding to the seventh die hole, the billet is first opened. The product is passed through a first die with a first extrusion hole having a cross-sectional shape to preform it as a product having an open cross-section, and immediately thereafter, it is passed through a second die with a second extrusion hole having a closed cross-section. , the open section is made into a closed section 7★
17. A product having a closed cross section; Two hot extrusion methods characterized by final molding. （２）　　高温加熱したビレットを収容するライナと、
このライナに隣接配置されたダイスと、そしてビレット
の後端を前記ダイスに向は押圧するラムと４−有する熱
間押出し装置に於いて、前記ダイスを予備成形用の第１
ダイスと最終成形用の第２ダイスとで構成し、 前記第１ダイスには開断面形状を有する第１押出し孔を
設け、ぞして前記第２ダイスには閉断面形状を有し且つ
第１押出し孔通過後の製品の開断面部葡閉断面化せしめ
る第２押出し孔を設けたことを特徴とする熱間押出し装
置。(2) A liner that accommodates the billet heated to a high temperature;
In a hot extrusion apparatus having a die disposed adjacent to the liner and a ram for pressing the rear end of the billet toward the die, the die is connected to a first die for preforming.
Consisting of a die and a second die for final forming, the first die is provided with a first extrusion hole having an open cross-sectional shape, and the second die is provided with a first extrusion hole having a closed cross-sectional shape. A hot extrusion device characterized in that a second extrusion hole is provided for converting the open cross section of the product after passing through the extrusion hole into a closed cross section. （３）　　高温加熱したビレットを収容するライナと、
このライナにＩｌｌｌ配接さね５たダイスと、そしてビ
レットの後端を前記ダイスに向は押圧するラムとを有す
る熱間押出し装置に於いで、前記ダイスを予備成形用の
第１ダイスと最終成形用の第２ダイスとで構成し、 前記第１ダイスには開断面形状を有−する第１押出し孔
を設け、前記第２ダ・１°スには閉断面形状を有し且つ
第１押出し孔通過後の製品の開断面部を閉断面化せしめ
る第２押出し孔を設け、 前記第１及び第２両ダイス間には、第２ダイスにて閉断
面化せしめる製品の接合予定部位へ当接自在にしてカッ
ターを介在設置したととを特徴とする熱間押出し装置。(3) A liner that accommodates the billet heated to a high temperature;
In a hot extrusion apparatus having a die with grooves disposed on the liner and a ram for pressing the rear end of the billet against the die, the die is combined with a first die for preforming and a final die. and a second molding die, the first die having a first extrusion hole having an open cross-sectional shape, and the second die having a closed cross-sectional shape and the first extrusion hole having a closed cross-sectional shape. A second extrusion hole is provided to convert the open cross-section of the product after passing through the extrusion hole into a closed cross-section, and a second extrusion hole is provided between the first and second dies for applying the second die to the joint portion of the product to be closed-cross-sectioned. A hot extrusion device characterized by having a cutter interposed therein so as to be freely accessible.