BE634907A - - Google Patents

Info

Publication number
BE634907A
BE634907A BE634907DA BE634907A BE 634907 A BE634907 A BE 634907A BE 634907D A BE634907D A BE 634907DA BE 634907 A BE634907 A BE 634907A
Authority
BE
Belgium
Prior art keywords
punch
tube
conical
move
cavity
Prior art date
Application number
Other languages
French (fr)
Publication of BE634907A publication Critical patent/BE634907A/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00Methods or machines specially adapted for the production of tubular articles
    • B28B21/52Methods or machines specially adapted for the production of tubular articles by extruding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00Extruding metal; Impact extrusion
    • B21C23/02Making uncoated products
    • B21C23/04Making uncoated products by direct extrusion
    • B21C23/08Making wire, bars, tubes
    • B21C23/085Making tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Description

       

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 



  Procédé pour l'extrusion de tubes 
 EMI1.2 
 I,'invontiazcoricerne l'oxtrusion de tubes. 



  Le i)voc6dé selon, l'invention pour l'erttruuion. d'un. tube consista â'oxtrudor la matière à...travers une' filière on. faisant déplacer en mdmo temps lui poinçon. conique en direction axiale à traver2 l-1 orifice da filière'ae façon qua le- tube extriidd - présents une cavité intérieure qui aolt conique au aairlcs sur une partie ,de au longueur. le fri*ûvéâ& aappliuo particulitreseat 5 l1 extnuiion de tuAa cralquas tt:ls -.lue cou-X ut'Llia-s corme isolateurs éled- triques pour Y4,ûte tension, cis il peut s'appliquer aussi d'nutreo Na.'tira qu'en paut bxtruder, çozrrenant les mâtïêraa, plaativiuea, lea caoutchoucs et les métaux...' , On décrira maintenant à titre d'exeaplà un procédé" rr.tvr3 paur, 2w tabrictian.d''axz tuba extmd<5 con.fornsen'':

   ##1\' . 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 l'invention en no r tlË-rant au denuin rictiliiitlti-lu annexa dans lequel: la ligure montra le d'extruuluii dont les organeo Otlt 9.ma coitaineo hs5.t3.orit rolativeo ;ot # la figure 2 montre la üw.poçiLi. dont orbulon ooht dans-d'autres a jj04s.ii.iunu rolativoa, En r,féroice au dessin, un:

   cylindre dï'ox'truai on 10 comprend une filière conique- 11 Voru laquelle une matiore a3rami que est refoulée au moyen d'unq dia ac.na fin Avec la filiira t1 coopéra un poinçon conique 12 uupporttv aur un arbre do manoeuvra . 14 qui 'travailsa la via 12 suivant non axe et lui portât do fùiro déplacer le poinçon iixialect')T.t travére l'orifice 15 dû .la filiez ra. là surface anriulaira à travers' laquelle la matiëfe -avraniclûc est extruda varie ainsi on fonction do.la poaition.du poinçon et un déplacement rr6..-rensi± du poinçbn produira un -tube cavité intérieure conique dont 1* attelé do oftno dépendra de la vitesse de déplacement du poinçon ot de la vitoaso d'QXt;rusi6n$ Des tubes à cavitu intérieure conique peuvent gtrd produits par aylnce:e:

  t du poinçon vers i'int<iricur ou vera . # ' ' l' oytrieur , ot on remarquera, qu'entra certaine limites on lie ut . obtenir tout dnjlo de et,ne ou rn-.:o une combinaison d'une cavité conique et d'une cavité cylindrique selon qu'o'n fait déplacer le 
 EMI2.2 
 .poinçon ou qu'on interrompt son' déplaceront. 
 EMI2.3 
 



  Aux fi,¯-urri.8 1 et 21 on a ropréyonttî la dplaavm3nt d'un poinçon 13 à vitesse constante ver  l' intérieur, la Ci,ut< représentant approxiativem<nt le 'tube aprbo la moitié de aoti 3xtiwcrior., t.x.discue la figure 2 montre la punition fin.'de pour la production d'un tube a cavité intérieure conique  L'angle d gaz ne du' poinçon 13 cet do priîférence le celui de la filière pour uotitenir la matière nprca qu'ollo a franchi la partie dû poinçon à 4 r.^cêtxa maximal.

   On-peut utiliaer tout moyon connu cil convcnabio pour faire déplacer le poinçon de la maniera désirée* Audicu ds supporter lo poinçon 13 par aii :u-bro 

 <Desc/Clms Page number 3> 

 
 EMI3.1 
 traversant la via sans fin, on peut,, si on,le désire, le supporter oxtrieureoant La z iliûro 1 peut être conique' sur toute sa longueur, ou . bien elle peut présenter une courtu partie terminale cylindrique, pourvu que le poinçon coopère avec la partie coniqiie - ; on -. trouvé 
 EMI3.2 
 quo la partie cylindrique aide 4 maintenir droite la pièce extrudée.: Dans une modification particulière du procédé décrit' 
 EMI3.3 
 G j.wtf339u3, on CüRli'..e:l'1C8 l'extruaion de la rtïntireavac .Ze poinçon danu la. position représentée' à la figure'2,.

   On fait alors '' .. déplacer le poinçon axialegient vers l'extérieur' pour diminuer la surface de l'orifico aIW.a.lri.'puis on le fait déplacer axiale- ment vers l'intérieur pour augmenter la surface de l'orifice  - ' annulaire en terminant dana la position représentée à la fi(,,Ure 2. 



  On obtient de cette façon un tube -av ai i t chacune de ses ext:-.¯- #3 #a ''i. ;tr,a- us ''ai kfu'i sca m3.3ieu. Si ' , en d4aiye pbtanip e part.c,id3uo entre les 'deux parties' coniques du tube pu maintient le poinçon dans sa position' xtr8u:e extérieure pendant le , temps désiré avant de le faire ## 'déplacer vora l'intérieur, eur., . # # .." ''],- ## *,J l'invention est ap*i c4ble à,diautres former de d:lspo-. - aitif d'extruàion, par pxempïe. à un dispositif utilisant un piston la' plaça de la vid sans fin 12. #' : ### '3 ,." ....#'.. 
 EMI3.4 
 



  De plue, bien qu'on ait décrit l'invention en se référant 
 EMI3.5 
 à lrobtention deun-tubq, en,.matèrer d'ramc4uè, elle s'applique esa- lomô'nt, à la production de tube en d'au'trea matierea qu'ici est-., "' /r possible d'extruder, R. LI v S K D 1 1 0 A t 1 0 K 3 - ' #¯ "# " "\']I"' #;'-#- ; ' ' " - # #' # ¯'"'n ! ' #' # ' " t, Procédé pour l'extrusion d'un tube, consistant à extruder la matière du tttbe3 à travers uns .filière en faisant d (pla- cor en même tempe un. poinçon conque axialeaent à travers 1 lori t'i- ce de filière de façon que le tube xtrud4 présente une cavité 1111t'Jkll'ti yl, riol llktljti0 EÏl1,I11V.lti.;t)tlt',1111aji,o'L1'tica t1u iil3't,,;119-titr 

 <Desc/Clms Page number 4> 

 
 EMI4.1 
 2.

   Procède selon la revendication 1, dans lequel on 
 EMI4.2 
 ne fait avancer le poinçon conique que dans un auils de façon que la partie coni--uo de .Va. cavité int-ir-Iouro ne soit conique 
 EMI4.3 
 que dans un sens. 
 EMI4.4 
 



  ?roc2d,' 3f-ion la revendication 1 dam; lequel, on fait avancer 1:.; poinçon conique ax Laïcisent à travora la filière d'abord d'.ris le, sens qui diminue la uurface de l'orifico annulaire des la filière, puis dans le uenu qui fait üu.r..erttr cette 0-arfacet de façon lu,. 1%- tube extrade" I)r6aenta >J chacune de a<t0 extrumittsune cavité. intérieure plus étroite qu'un rion milieu, 4. Procède Solon l'une quelconque des revondicationa qui procèdent , dans lequel la nritière oxtrudée est une matière 
 EMI4.5 
 coranique, 
 EMI4.6 
 5. Procède selon l'une quelconque des revendication dMht ia.Lij. i<t; iaybixa MxKUtd eha ue ts.isd 3tsrrttk un caoutchouc ou un mu 6. Article tubulaire obtenu par le iT'ocûd6 seZon l'une des revcndicaticns 4,,lJ précèdent.



   <Desc / Clms Page number 1>
 
 EMI1.1
 



  Tube extrusion process
 EMI1.2
 I, 'invontiazcoricerne the oxtrusion of tubes.



  The i) voc6dé according to the invention for the erttruion. of one. tube consisted of oxidizing the material through ... an on die. making move in mdmo time him punch. Tapered in the axial direction through the spinneret port so that the outer tube has an interior cavity which is tapered for a part of the length. le fri * ûvéâ & aappliuo particulitreseat 5 l1 extnuiion de tuAa cralquas tt: ls -.lue cou-X ut'Llia-s as electrical insulators for Y4, at tension, cis it can also be applied to nourish Na. ' drew that in paut bxtruder, çozrrenant the masticaa, plaativiuea, the rubbers and metals ... ', We will now describe by way of example a process "rr.tvr3 paur, 2w tabrictian.d''axz tuba extmd <5 con.fornsen '':

   ## 1 \ '.

 <Desc / Clms Page number 2>

 
 EMI2.1
 the invention by not rtlË-rant to the denuin rictiliiitlti-lu annexed in which: the figure shows the extruuluii whose organeo Otlt 9.ma coitaineo hs5.t3.orit rolativeo; ot # figure 2 shows the üw.poçiLi . of which orbulon ooht in-others has jj04s.ii.iunu rolativoa, In r, ferocious in the drawing, a:

   Oxtructure cylinder 10 comprises a conical die 11, which an aromatic material is forced out by means of a fine dia ac.na. With the t1 filiira a conical punch 12 cooperates with a shaft for maneuvering. 14 which 'works the via 12 following a non-axis and carried him to move the iixialect punch') T.t crosses the orifice 15 due to the spinning ra. the anriulaira surface through which the material -avraniclûc is extruded thus varies according to the poaition.du punch and a rr6 ..- rensi ± displacement of the punch will produce a conical inner cavity -tube of which the hitched do oftno will depend on the speed of movement of the punch ot of the vitoaso d'QXt; rusi6n $ Tubes with conical interior cavity can be produced by aylnce: e:

  t of the punch towards i'int <iricur or vera. # '' the inside, ot one will notice, that between certain limits one binds ut. get any dnjlo de et, ne or rn-.:o a combination of a conical cavity and a cylindrical cavity depending on whether the
 EMI2.2
 .punch or that one interrupts his' will move.
 EMI2.3
 



  At fi, ¯-urri.8 1 and 21, we have ropréyontî the displacement of a punch 13 at constant speed towards the interior, the Ci, ut <representing approximately the 'tube aprbo half of aoti 3xtiwcrior., Tx shown in figure 2 shows the fine penalty for the production of a tube with a conical interior cavity. The gas angle of punch 13 does not take precedence over that of the die to hold the nprca material that ollo has crossed the part due to the punch at 4 rows maximum. ^ cêtxa.

   We can use any known means cil convcnabio to move the punch in the desired manner * Audicu ds support the punch 13 by aii: u-bro

 <Desc / Clms Page number 3>

 
 EMI3.1
 crossing the endless via, one can, if one wishes it, to support it oxtrieureoant The z iliûro 1 can be conical 'over its entire length, or. although it can have a short cylindrical end part, provided that the punch cooperates with the coniqiie part -; we -. find
 EMI3.2
 that the cylindrical part helps to keep the extruded part straight: In a particular modification of the method described '
 EMI3.3
 G j.wtf339u3, on CüRli '.. e: 1'1C8 the extruaion of the rtïntireavac .Ze punch danu the. position represented 'in figure' 2 ,.

   We then '' .. move the punch axially outward 'to reduce the area of the orifico aIW.a.lri.' Then we move it axially inward to increase the area of the orifice - 'annular ending in the position shown at fi (,, Ure 2.



  We obtain in this way a tube -av ai i t each of its ext: -. ¯- # 3 #a '' i. ; tr, a- us '' ai kfu'i sca m3.3ieu. Si ', en d4aiye pbtanip e part.c, id3uo between the' two conical parts' of the tube pu keeps the punch in its position 'xtr8u: e outside for the desired time before doing it ##' move vora inside , eur.,. # # .. "''], - ## *, J the invention is applicable to, furthermore, from extrusion, by pxempia. To a device using a piston la ' placed endless vid 12. # ': ###' 3,. " .... # '..
 EMI3.4
 



  Further, although the invention has been described with reference to
 EMI3.5
 to the obtaining of a tubq, in, .matèrer d'ramc4uè, it applies esa- lomô'nt, to the production of tube in other material than here is-, "'/ r possible of' extrude, R. LI v SKD 1 1 0 A t 1 0 K 3 - '# ¯ "#" "\'] I" '#;' - # -; '' "- # # '# ¯'" 'n ! '#' # '"t, A process for the extrusion of a tube, consisting in extruding the material of the tttbe3 through a thread while placing at the same time an axial conch punch through the lori this die so that the tube xtrud4 has a cavity 1111t'Jkll'ti yl, riol llktljti0 EÏl1, I11V.lti.; t) tlt ', 1111aji, o'L1'tica t1u iil3't ,, ; 119-titr

 <Desc / Clms Page number 4>

 
 EMI4.1
 2.

   Method according to claim 1, in which
 EMI4.2
 only advances the conical punch in one auils so that the coni - uo part of .Va. int-ir-Iouro cavity is not conical
 EMI4.3
 that in a way.
 EMI4.4
 



  ? roc2d, '3f-ion of claim 1 dam; which, we advance 1:.; conical punch ax Lay through the die first of .ris the, meaning which decreases the uurface of the annular orifico of the die, then in the uenu which makes üu.r..erttr this 0-arfacet in a way read ,. 1% - extruded tube "I) r6aenta> J each of a <t0 extrumitts an interior cavity narrower than a middle rion, 4. Solon any of the revondicationa which proceed, in which the oxtruded material is a material
 EMI4.5
 Koranic,
 EMI4.6
 5. Method according to any one of claims dMht ia.Lij. i <t; iaybixa MxKUtd eha ue ts.isd 3tsrrttk a rubber or a mu 6. Tubular article obtained by the iT'ocûd6 according to one of the preceding claims 4,, lJ.


    
BE634907D BE634907A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295938A2 (en) * 1987-06-18 1988-12-21 Lohja Parma Engineering Lpe Oy Slip-form casting machine for fabrication of elongated concrete products

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295938A2 (en) * 1987-06-18 1988-12-21 Lohja Parma Engineering Lpe Oy Slip-form casting machine for fabrication of elongated concrete products
EP0295938A3 (en) * 1987-06-18 1989-07-26 Parma Oy Slip-form casting machine for fabrication of elongated concrete products

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