EP0818252A1 - Indirekt-Metallstrangpresse und Verfahren zum Entfernen eines eingefroreren Blockes - Google Patents

Indirekt-Metallstrangpresse und Verfahren zum Entfernen eines eingefroreren Blockes Download PDF

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Publication number
EP0818252A1
EP0818252A1 EP97401635A EP97401635A EP0818252A1 EP 0818252 A1 EP0818252 A1 EP 0818252A1 EP 97401635 A EP97401635 A EP 97401635A EP 97401635 A EP97401635 A EP 97401635A EP 0818252 A1 EP0818252 A1 EP 0818252A1
Authority
EP
European Patent Office
Prior art keywords
billet
cross member
spinning
container
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97401635A
Other languages
English (en)
French (fr)
Inventor
Fernand Gachy
Alain Noterman
Michel Resmond
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Clecim SAS
Original Assignee
Kvaerner Metals Clecim SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kvaerner Metals Clecim SA filed Critical Kvaerner Metals Clecim SA
Publication of EP0818252A1 publication Critical patent/EP0818252A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
    • B21C35/04—Cutting-off or removing waste
    • 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/21—Presses specially adapted for extruding metal
    • B21C23/218—Indirect extrusion presses
    • 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
    • B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
    • B21C35/06—Cleaning dies, ducts, containers or mandrels

Definitions

  • the subject of the invention is a spinning press advanced reverse, equipped with a unlock a billet and also covers the unlocking process implemented in such a hurry.
  • a spinning press includes, in general, two fixed sleepers spaced one of the other between which can move a cross movable, parallel to a spinning axis, under the action of a spinning cylinder bearing on one of the two sleepers, these being connected between them by uprights or columns of fixed length of so as to maintain their spacing.
  • a container provided with a tubular housing centered on the axis of spinning and in which can be placed a billet of spinning metal having substantially the same cross-section as the container housing, the latter having two open ends, respectively one end rear turned to the side of the mobile crossmember and the first fixed cross member and a front end turned on the side of the second fixed crosspiece.
  • the container is associated, on the other hand, with two closure pieces, respectively of the two ends of the housing, one of these pieces of closure resting on the container during spinning while the other closure piece, having substantially the same section as the housing of the container, can get inside of it under the action of the main spinning cylinder, causing the extrusion of the metal from the billet into a die made on one of these two pieces of closing, which come close to each other.
  • the sector is formed on a closure piece mounted on the fixed cross member and on which the container, the latter being fixed during spinning.
  • the second closing piece consisting of a grain full, of the same diameter as the container housing, is formed at the end of a rod called a gland, which slides into the rear end of the housing under the action of the spinning cylinder, causing the extrusion metal by the die placed at the other end of the housing.
  • the sector is carried by an annular grain of spinning mounted at the end of a rod forming a tubular gland bearing on the second fixed cross member, generally called a box spring.
  • the shutter is then a massive piece, of a certain thickness, interposed between the movable cross member and the container.
  • the shutter comprises at least one front part of the same diameter as the housing of the container, which penetrates inside the housing at start of the spinning process, using the billet whose the advancement is blocked by the fixed grain placed on the gland.
  • the billet thus compressed between the spin grain and the shutter crashes in sticking to the side wall of the housing and completely evacuating the air contained therein. Then the spinning continues, the container being pushed by the movable cross member.
  • the billet cools inside the housing and press capacity is then insufficient to resume spinning.
  • the sector initially chosen may prove to be ill-suited to the nature of the metal, billet dimensions or the capacity of the hurry.
  • the stroke of the main spinning cylinder must therefore be increased by the same length and one is brought to make presses with a total length of at least minus five times the length of the billet.
  • the object of the invention is to solve all of these problems thanks to an improved press, fitted with a particularly unlocking device simple, further avoiding any increase in the length of the press, being limited to the strictly necessary length for normal operation, i.e. approximately three times the length of the billet, in the case of a compact press.
  • the invention generally applies to a spinning press comprising two fixed crosspieces separated, respectively a first cross and a second cross member, a movable cross member movable between the two fixed sleepers, parallel to an axis of spinning, a container placed between the second crosspiece fixed and the mobile cross member and resting on it for a spinning operation, a housing for a billet, arranged inside said container, centered on the spinning axis, and having two ends open, respectively, a rear end turned on the side of the movable cross member and one end before turned to the side of the second fixed cross member, a shutter having a movable thickness (e) axially, during spinning, with the movable cross member and the container, an axially fixed spin grain, having a section substantially equal to that of the housing and carrying a die centered on the axis of spinning, said grain being mounted at one end rear of a tubular gland bearing on the second fixed cross member, and a main spinning cylinder building on the first fixed cross member to advance the mobile sleeper with the container
  • the improved press according to the invention is fitted with a movable shutter on the crossmember movable, transverse to the spinning axis, between a first position, centered on the spinning axis, of closing the rear end of the housing and a second spacing position of said shutter and is equipped with an extraction part having substantially the same thickness as the shutter and provided with a hole central section at least equal to that of the housing of the container, said extraction part being mounted movable on the mobile cross member, transversely to the spinning axis, between a first position spacing of the extraction part and a second unlocking position of a billet, for which the central hole is centered on the spinning axis, said central hole forming, in the second position of the extraction room, a reception area of at least a rear part of the billet likely to be released from the container housing repelled by said extraction part by advancing the cross member mobile.
  • the hole center of the extraction part is extended, in the unlocking position, by a housing in the movable cross member.
  • this accommodation can be advantageously extended by a blind hole provided in the piston of the main spinning cylinder on a depth such as the total length of the hole central, of the mobile cross member and the hole blind is at least equal to that of a billet.
  • the invention also covers the method of setting work of a spinning press thus perfected, in case of blockage of a billet during spinning at inside the accommodation.
  • the advancement of the sleeper mobile determines the engagement with a length of billet greater than the thickness of the part extraction, successively in the central hole of this then in the housing of the movable cross member.
  • the container is advanced in putting it on the gland so as not to keep in container housing that a front part of length (b), of the billet and we move the movable cross member at least sufficient distance for the implementation of the means of taking charge of the billet.
  • the length of the front part of the billet kept engaged in the housing is sufficient for it to be kept cantilevered in the spinning axis until installation the means of care.
  • the billet being thus supported by means of we can move the container forward by threading it over the gland until the end of it arrives at the rear side facing the back of the container facing the movable cross member and we then take off the billet of the gland using a shear that can be moved along from said rear face of the container, the billet can then be evacuated.
  • Figure 1 shows schematically the whole a spinning press by the reverse method.
  • Figures 2 to 9 are partial diagrams illustrating the different stages of the unlocking according to the invention.
  • FIG 1 there is shown schematically the whole of a spinning press 1 by the method inverse comprising, conventionally, a first fixed cross member 11 on which a cylinder is mounted main spinning 12 and a second fixed cross 13, often called “box spring", connected to the first cross 11 by columns 14 likely to maintain the spacing of the two fixed crosspieces 11 and 13 and which can also consist of amounts prestressed.
  • a container 2 in which is housed a housing 20 consisting of a bore having a cross section slightly higher than that of a metal billet spinning and which is centered on a spinning axis 10 coinciding with the axis of the main spinning cylinder 12.
  • the housing 20 opens, at its two ends, onto the two sides of the container 2, respectively before 21 and rear 22, relative to the direction of spinning, it is say towards the second fixed cross member 13.
  • container 2 is mounted on a cradle which can be formed on an auxiliary cross member 23 capable of move between the two fixed crosspieces 11 and 13, parallel to the spinning axis 10, under the action of auxiliary cylinders not shown.
  • a movable cross member 3 which rests on the piston 15 of the main spinning cylinder 12 and which can generally also be moved in parallel to the spinning axis 10, under the action of jacks auxiliaries not shown.
  • the housing 20 is associated with two closing pieces intended for the closure of its ends, respectively a first part 3, called shutter, which is interposed between the mobile sleeper and the container 2 and a second part 4 having a slightly cross section lower than that of the housing 20 so as to slip on in the housing 20 during the spinning.
  • a first part 3 called shutter
  • second part 4 having a slightly cross section lower than that of the housing 20 so as to slip on in the housing 20 during the spinning.
  • the shutter 31 is consisting of a massive piece mounted on the cross mobile 3 and having a front face 32 which can come apply to the rear face 22 of the container 2 of so as to close the corresponding end of the housing 20.
  • the housing 20 can come thread on the second closure part 4 which forms an annular grain of spinning on which is mounted a die 41 centered on the spinning axis 10.
  • Spinning grain 4 is mounted at the end of a gland 42 consisting of a tubular rod pierced with a central bore 43 and fixed to the base 13.
  • the bore 43 is centered on the spinning axis 10 and extended by a hole 13 'passing through the bed base 13.
  • the length of the gland 42 is such that the die 41 is at least 13 from the bed base equal to the length (L) of the housing 20 of the container 2 corresponding to the maximum billet length at spin. In this way, the container 2 can slip on integrally on the gland 42, the die 41 coming then at the rear face 22.
  • a base shear 24 mounted on the container cross member 23 can move along of the rear face 22 of the container to separate the profile 51 of the metal base which remains, at the end of the spinning, between the shutter 31 and the spinning grain 4.
  • auxiliary cylinders not represented allow to carry out maneuvers independent of the cradle 23 carrying the container and of the movable cross member 3.
  • the spinning can be done under the action of the jack main 12 whose piston 15 pushes the crosspiece mobile 3 which is supported on the container 2 either directly either, most often, through shutter 31.
  • the container 2 closed by the shutter 31 is therefore pushed back by the movable cross member 3 and the housing 20 threads onto the spinning grain 4 which is fixed and comes to rest on the billet 5 by closing the front end of the housing 20.
  • the billet 5 is then crushed between the movable shutter 3 and the grain of fixed wiring 4 and the thrust action of the jack main 12 causes its extrusion through the die 41 and the formation of a profile which escapes by the bore 43 of the gland and the hole 13 'of the box spring.
  • the shutter 31 is provided, on its front face, with a projecting portion 31 ', of diameter slightly lower than that of housing 20 which can so enter it by taking support directly on the billet, so as to cause a compaction thereof at the start of spinning, with expulsion of the air contained between the billet and the wall of the housing 20.
  • the entire part 31 with the projecting part 31 ′ has a thickness (e).
  • the press is equipped with a the unlocking device which has the advantage essential to be applicable to a compact press, the device that can be adapted to an existing press without increasing the length thereof.
  • This release device includes essentially an extraction member 33 consisting a tubular piece whose thickness (e) is substantially equal to that of the shutter 31 so to be able to replace it in the spinning axis without another recoil of the mobile sleeper.
  • the extraction member 33 is a simple piece massive tubular shape with a central hole 34 whose cross section (s') is substantially identical to that (s) of the accommodation 20 and, in any case at least equal to this.
  • the shutter 31 as well as the extraction part 33 can be removably mounted on the crossmember mobile 3 so as to allow the replacement of one by the other. This can be done manually but, preferably, the shutter 31 and the extraction part 33 are mounted on a device replacement, for example a rotating part forming a sort of barrel 35 comprising two arms bearing, respectively, the shutter 31 and the part 33 and pivotally mounted on the cross member movable around a central axis parallel to the axis of spinning 10 so as to allow, by simple rotation of the barrel 35, the establishment of one or other of the two pieces in the spinning axis 10.
  • a device replacement for example a rotating part forming a sort of barrel 35 comprising two arms bearing, respectively, the shutter 31 and the part 33 and pivotally mounted on the cross member movable around a central axis parallel to the axis of spinning 10 so as to allow, by simple rotation of the barrel 35, the establishment of one or other of the two pieces in the spinning axis 10.
  • a slide 35 movable the along the front face of the movable cross member 3, perpendicular to the spinning axis 10, and on which the shutter 31 and the extraction part 33 came up apart from each other to come alternately place in the spinning axis by transverse sliding.
  • the movable cross member 3 is provided with a housing 36 centered on the spinning axis 10 and having the same cross section (s') as the central hole 34 of the extraction part 33.
  • the housing 36 is extended in the axis of the piston 15 of the jack main 12 by a blind hole 37 whose bottom is placed at a distance (L ') from the front face of the shutter 31 at least equal to the length of a billet 5.
  • the shutter 31 thus released can be moved aside by rotation of the barrel 35 which places the part extraction 33 in the spinning axis, in the position shown in Figure 4 for which the holes 34, 36 and 37 are in the extension one of each other and form a length housing (L ') substantially equal to the length (L) of the housing 20 of the container 2.
  • the billet 5 is then takes off from the housing 20 and the container 2 can advance towards the bed base 3 while threading on the gland 42, in the position shown in FIG. 5.
  • the billet 5 blocked by the spinning grain 4 takes off from housing 20 and slides at the same time in the central hole 34 of the extraction part 33 then, if necessary, in the hole 36 of the crosspiece mobile 3.
  • the movable cross member 3 is then moved back again in the position shown in Figure 6 and a distance (c) clearing a free part 53 of the billet allowing it to be taken care of by an adequate means 54 such as a sling or a shovel loading.
  • This distance (c) may be simply sufficient to allow the positioning of the gripping member in charge 54, the billet being maintained, until its supported by its two ends 52, 55 engaged, respectively, in the housing 20 and the extraction part 33.
  • the container 10 is placed, by means of its auxiliary cylinders, in its advanced position for which its rear face 22 is in the plane of the end of the die carrying die 4 and crosses it mobile 3 is placed in its retracted position to which the extraction part 33 is at a distance (L ') of the grain carrier die 4 greater than the length maximum (L) of the billet 5.
  • the shears 24 is then maneuvered so as to separate the section 51 from billet 5 which can finally be removed from the press by the care provider 54.
  • Figure 9 shows the final step of the process.
  • the shears 24 is returned to its rest position and the shutter 31 is returned to the spinning position by rotation of the barrel 35, the extraction part 33 returning to its initial position away from the axis of spinning.
  • the press is then ready for a new phase of spinning.
  • the invention optimizes its structure by reducing the distance between the box spring and the crosspiece mobile since this distance can be practical simply equal, apart from the games, to the sum of the length of the gland and the length of the container.
  • Such a press can therefore have an overall length corresponding to three times the length of the container.
  • a press according to the invention will also be more easy to install in an existing environment, by example, for the replacement in place of a old press by a new press which, without increase the size, can be more powerful and allow the spinning of longer billets.
  • the invention makes it possible to simplify considerably the billet unlocking operation avoiding the use of a set of different buckets lengths set up successively according to the usual procedure.
  • the billet can be completely cleared in one operation by simple advance of the mobile cross member.
  • the invention is applicable, from a generally, to any reverse spinning press and does not prevent the use of usual accessories since the change to the press for the implementation of the process simply involves provide for the drilling of a housing in the axis of the jack main, replacing the shutter with the tubular extraction piece that can be done by any medium and even manually.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Extrusion Of Metal (AREA)
EP97401635A 1996-07-11 1997-07-08 Indirekt-Metallstrangpresse und Verfahren zum Entfernen eines eingefroreren Blockes Withdrawn EP0818252A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9608706A FR2750901B1 (fr) 1996-07-11 1996-07-11 Procede de deblocage d'une billette dans une presse a filer
FR9608706 1996-07-11

Publications (1)

Publication Number Publication Date
EP0818252A1 true EP0818252A1 (de) 1998-01-14

Family

ID=9493966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97401635A Withdrawn EP0818252A1 (de) 1996-07-11 1997-07-08 Indirekt-Metallstrangpresse und Verfahren zum Entfernen eines eingefroreren Blockes

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Country Link
US (1) US5931041A (de)
EP (1) EP0818252A1 (de)
DE (1) DE818252T1 (de)
FR (1) FR2750901B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107931345A (zh) * 2017-11-16 2018-04-20 燕山大学 一种卧式反复成形挤压机
CN107952812A (zh) * 2017-12-07 2018-04-24 泰州市博世特精密铸造有限公司 一种金属材料水压快速成型装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW519931U (en) * 2001-01-08 2003-02-01 Catcher Technology Co Ltd Automatic extruding machine allowing improving properties of alloy materials

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE514735C (de) * 1928-07-27 1930-12-17 Fried Krupp Grusonwerk Akt Ges Hydraulische Strangpresse
EP0043025A1 (de) * 1980-06-23 1982-01-06 SMS HASENCLEVER Maschinenfabrik GmbH Indirekt-Metallstrangpresse mit Einrichtung zum Entfernen eines "eingefrorenen" Blockes
GB2094690A (en) * 1981-03-16 1982-09-22 Schloemann Siemag Ag Removing a die sealing member and residual metal from an indirect extrusion press

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6045011B2 (ja) * 1980-07-25 1985-10-07 株式会社神戸製鋼所 金属押出プレスにおける押詰りビレットの処理装置
EP0114571A3 (de) * 1982-12-24 1984-10-10 Schweizerische Aluminium Ag Vorrichtung zum indirekten Strangpressen eines Hohlprofils
JPS60141911U (ja) * 1984-02-25 1985-09-20 株式会社神戸製鋼所 間接押出プレス
US4781053A (en) * 1986-03-05 1988-11-01 Stewart Charles L Indirect extrusion process and machinery therefor
US4785652A (en) * 1986-07-18 1988-11-22 Stewart Charles L Indirect extrusion press with ram-mounted turret supporting tooling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE514735C (de) * 1928-07-27 1930-12-17 Fried Krupp Grusonwerk Akt Ges Hydraulische Strangpresse
EP0043025A1 (de) * 1980-06-23 1982-01-06 SMS HASENCLEVER Maschinenfabrik GmbH Indirekt-Metallstrangpresse mit Einrichtung zum Entfernen eines "eingefrorenen" Blockes
GB2094690A (en) * 1981-03-16 1982-09-22 Schloemann Siemag Ag Removing a die sealing member and residual metal from an indirect extrusion press

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107931345A (zh) * 2017-11-16 2018-04-20 燕山大学 一种卧式反复成形挤压机
CN107931345B (zh) * 2017-11-16 2019-08-23 燕山大学 一种卧式反复成形挤压机
CN107952812A (zh) * 2017-12-07 2018-04-24 泰州市博世特精密铸造有限公司 一种金属材料水压快速成型装置

Also Published As

Publication number Publication date
US5931041A (en) 1999-08-03
FR2750901B1 (fr) 1998-11-06
DE818252T1 (de) 1998-07-16
FR2750901A1 (fr) 1998-01-16

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