EP0043025A1 - Presse pour le filage indirect de métaux et appareil pour enlever des billettes "gelées" - Google Patents

Presse pour le filage indirect de métaux et appareil pour enlever des billettes "gelées" Download PDF

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Publication number
EP0043025A1
EP0043025A1 EP81104623A EP81104623A EP0043025A1 EP 0043025 A1 EP0043025 A1 EP 0043025A1 EP 81104623 A EP81104623 A EP 81104623A EP 81104623 A EP81104623 A EP 81104623A EP 0043025 A1 EP0043025 A1 EP 0043025A1
Authority
EP
European Patent Office
Prior art keywords
stamp
hollow
profile
closure
block
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.)
Granted
Application number
EP81104623A
Other languages
German (de)
English (en)
Other versions
EP0043025B1 (fr
Inventor
Franz-Josef Zilges
Johannes-Ulrich Weiss
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.)
SMS Hasenclever Maschinenfabrik GmbH
Original Assignee
SMS Hasenclever Maschinenfabrik GmbH
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 SMS Hasenclever Maschinenfabrik GmbH filed Critical SMS Hasenclever Maschinenfabrik GmbH
Priority to AT81104623T priority Critical patent/ATE6347T1/de
Publication of EP0043025A1 publication Critical patent/EP0043025A1/fr
Application granted granted Critical
Publication of EP0043025B1 publication Critical patent/EP0043025B1/fr
Expired 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/20—Making uncoated products by backward extrusion
    • B21C23/205—Making products of generally elongated shape
    • 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
    • B21C35/04—Cutting-off or removing waste

Definitions

  • Indirect metal extrusion presses consist of a press frame, which is made up of a tie rod supporting the press cylinder, a counter beam, and a cylinder beam and counter beam, and a hollow ram, which is supported on the counter beam and which in turn supports the die, and a receiver that is guided and axially displaceable in the press frame carrying transducer holder and a moving bar moved by the plunger, a stamp for the closure of the transducer.
  • the presses are additionally provided with a perforated mandrel, which can be displaced through pistons in cylinders through the then pierced sealing punch through to the die.
  • the object of the invention is to improve the indirect extrusion press and to provide a method of working which is intended to enable the removal of "frozen" blocks.
  • the closure stamp according to the invention can be exchanged for a hollow stamp or for a profile stamp which only partially fills the available cross-section, with a circumscribing circle of the diameter of the closure stamp and profile sections which are open to the outside, or if a hollow stamp or a profile stamp corresponding training is used as a sealing disc supporting stamp.
  • the sealing disc used is usually clamped in the sensor bore and can therefore only be removed with considerable force. To do this without additional one
  • the closure disc with the closure stamp or with the hollow or profile stamp can be connected in a tensile manner. Since a large number of sealing disks is required, it is advantageous to provide connecting means which require little processing effort, particularly on the sealing disks. A weakening of the sealing disks by the connecting means must also be avoided.
  • each closure disk and the closure, hollow or profile stamp are provided at the mutually facing ends with collars formed by ring-shaped rear turns, and by a split clamp which engages with counter-rings in the rear turns and can be closed by a collar ring connectable.
  • the working method in accordance with the invention provides, with a metal extrusion press of the type according to the invention, for removing "frozen" metal blocks after the closure disk has been removed and — if a special closure stamp is used — after the replacement of this closure stamp with a hollow or profile stamp, the frozen block against the attached or molded auxiliary die provided hollow or profile stamps opposite to the actual pressing direction indirectly via the profile stamp or in the hollow stamp continuously or in multiple offset stroke as well as separation of extruded strand sections in chargeable scrap pieces, until a pressing of the block remnant is possible, for which purpose It is known that a bushing of somewhat larger inner diameter than the pick-up bore for receiving the remainder of the block is inserted between the runner and the pick-up.
  • the working method is to be supplemented according to a further feature of the invention in such a way that the pickup holder and the barrel spar at Pressed moved into a relative position and held in this by known couplings between the transducer holder and the spar, so that in the event of a block freezing, the locking disc protrudes from the transducer with the collar and backward rotation and before the frozen block is removed, the connection of the locking disc with the closure, hollow or profile stamp and pulling out the closure disc by means of the closure, hollow or profile stamp.
  • the indirect metal extrusion press shown in Fig. 1 consists of the press frame, which is formed from a cylinder beam 1, a counter beam 2 and tie rods 3 connecting them.
  • the cylinder spar 1 carries the main press cylinder 4, in which the plunger 5 sits as the main press piston.
  • the plunger 5 is connected via a frame 6 to the running beam 7, which is axially movably guided in the press frame along the tie rods 3.
  • the plunger 5 feeds the spar 7, while for the retraction piston rods 8 are connected to the spar 7 via the frame 6 and are seated with their pistons 9 in the retracting cylinders 10, which are carried by the cylinder spar 1 like the master cylinder 4.
  • a pickup holder 11 for the displacement of which pistons 12 are provided, which are connected to the pickup holder 11 via piston rods 13 and are seated in cylinders 14, which are also carried by the cylinder spar 1.
  • With 15 clamp connections are designated, which sit in the spar 7 and encompass the piston rods 13 through which the L upramp 7 can be firmly connected to the piston rods 13 so that the spar 7 can be firmly connected both to the pickup holder 11 and to the piston 12 is.
  • a piercing mandrel is required, which is fastened to a piercing mandrel traverse 16.
  • the piercer cross member 16 is axially movably guided in windows 17, which are lungerkolben in the cross beam 7 to the P 5 connecting frame 6 incorporated.
  • the plunger 5 is hollow and open to the punch mandrel 16 so that it forms a cylinder for a plunger 18 which can advance the punch mandrel 16.
  • this is connected to cylinders 19, in which plungers 20 are seated, which are supported on the runner 7.
  • clamping connections 22 in the mandrel cross member 16 and clamping connections 23 in the cylinder spar 1 and tie rods 24 the piercing mandrel cross member 16 can be fixed in the press frame.
  • a die stamp 28 fastened to the counter beam 2 in the punch holder 27 supports a die 29.
  • a closure punch 31 fastened to the barrel member 7 in the die holder 30 with the support closure piece 32 supported by it has advanced with the barrel member 7 against the block 25 and the block 25 to has moved against the die 29 and - if a hollow profile is to be pressed - after the piercing mandrel 34 fastened in the mandrel holder 33 to the piercing mandrel cross member 16 has penetrated the metal block 25 until the mandrel tip is in the opening of the die 29, the clamping connection 15 is closed, so that the pickup holder 11 is connected to the pickup 26 with the running beam 7.
  • the locking stamp 31 is first moved back into its starting position.
  • the transducer closure piece 32a is then removed, which can be done with simple tools or in particular the pulling devices of which can take place if the receiving closure piece 32a is provided with corresponding catches or threads for connection to the puller.
  • the receiving closure piece 32a is provided with corresponding catches or threads for connection to the puller.
  • Auf luckverschluß Gi 32a and the V ER- circuit temple 31 by a threaded bolt together to connect and so the Auf luxuryverschluß Korean 32a pull out of the closing ram 31 to leave.
  • the sealing stamp 31 is also removed.
  • a hollow punch 36 is inserted in the barrel 7 in exchange for the closing punch 31 and supports an auxiliary die 37.
  • the auxiliary die 37 has a die opening which is substantially larger than the main die 29.
  • the barrel 7 is moved back with the hollow punch 36 into the starting position into the position shown in FIG. 2e.
  • the saw With the two saw blades 39 and 40, which can be moved transversely to the press axis on a support (not shown), a section 38a of the scrap strand 38 is separated and brought out, so that the section 38b of the scrap strand 38 can also be brought out.
  • the metal block 25 can be deformed to the necessary extent into scrap strand pieces 38a, b, etc. of a chargeable length, since, according to the opening of the auxiliary die 37, a shaping ratio to be overcome by the existing pressing force is maintained.
  • the closure stamp 31 is exchanged for a profile stamp 41, such as. this can be seen from FIGS. 3b and 3c.
  • the profile stamp 41 is moved up to the locking disc 32b, as shown in FIG. 3d, and the locking disc 32b and the profile stamp 41 are connected by a clamp 43 consisting of two halves and held together by a coupling ring 42, as is shown in FIG 5, 7 and 8 is explained in more detail.
  • the Laufhom 7 of the pistons 9 via the tie rods 8 and the frame 6 of the profile stamp 41 and the closure disk 32b is pulled out of the bore of the transducer 26 into the position shown in FIG. 3e, whereupon the clamp 42 is released and the closure disk 32b can be removed.
  • the profile die 41 is now pressed against the block 25 in the receiver 26 by acting on the main press piston 5, which acts on the barrel 7 via the frame 6.
  • the block Via the three profile recesses 44 (see FIG. 6) of the profile die 41, the block is pressed indirectly against the actual pressing direction into three scrap strands 45, which first run through the profile recesses 44 and then are diverted outside the transducer 26 and into pieces of chargeable length be split as shown in Fig. 3f.
  • the profile recesses 44 are dimensioned in cross-section so that the pressing of the block 25 via the profile die 41 takes place with a considerably smaller deformation ratio than the die 29 would require during normal pressing, so that the pressing force for the pressing with the profile die 41 is still sufficient.
  • the crossbar 7 is moved back with the profile stamp 41 into the position shown in FIG. 3g.
  • the block 25 is pressed to the necessary or sufficient extent when its rest can be moved in the transducer 26 with the available pressing force.
  • the hollow punch 36 (in the case of the embodiment according to FIGS. 2a to 2e) or the profile punch 41 (in the case of the embodiment according to FIGS. 3a to 3g) is then exchanged for a bushing 46, the inside diameter of which is somewhat larger than the inside diameter of the transducer 26 (see Fig. 4a).
  • the bushing 46 By acting on the main plunger 5, the bushing 46 is pressed against the transducer 26 via the frame 6 and the barrel 7.
  • the pistons 12 can also be acted upon to support the displacement of the transducer.
  • the rest of the block 25, which is supported against the die stamp 28, is pressed out of the receiver 26 and enters the bore of the bushing 46, as shown in FIG. 4b.
  • the rest of the block 25 is fixed in the bushing 46 by means of clamping screws 47, so that when the barrel 7 is withdrawn from the bushing 46, the rest of the block 25 and a possibly pressed strand 48 including the die 29 are taken along (see FIG. 4c). If a pressed strand 48 is present, it can be cut off at 49 and 50 and applied.
  • the rest of the block 25 is brought out with the bushing 46.
  • FIGS. 3a to 3g show on a larger scale details of the embodiment of FIGS. 3a to 3g.
  • the profile stamp 41 is detachably fastened with its foot 51 by the stamp holder 52 in the running beam 7. At its front part, which enters the transducer 26, the profile punch 41 is reduced to a diameter which is slightly smaller than the bore of the transducer 26 and is further provided with profile recesses 44.
  • the profile die 41 and the closure disk 32b are turned at their mutually facing ends in such a way that the profile die 41 has an annular groove 53 behind a collar 54 and the closure disk 32b has an annular groove 55 behind a collar 56.
  • a clamp 43 formed from two halves 43a and 43b, which engages with its collar 57 in the annular groove 53 on the profile die 41 and with its collar 58 in the annular groove 55 on the closure disk 32b, and the two halves 43a and 43b thereof by means of a collar ring 42 are held together, the closure disk 32b can be connected to the profile stamp 41 in a tensile manner.
  • Half 43a of clamp 43 is part of a C-shaped hook 59 which is attached to a crane with a shackle 60.
  • Half 43b of clamp 43 is pivotally connected to half 43a or C-shaped hook 59 via hinge 61.
  • a bolt 63 is inserted, on which a sleeve 64 is displaceable, which carries the coupling ring 42 which holds the halves 43a and 43b of the clamp 43 together via the hanger 65.
  • the coupling ring 42 can move from the position shown in FIG. 5 with the hanger 65 to the position also shown in FIG. 5 without the hanger 65, in which the coupling ring 42 the two halves 43a and 43b the clamp 43 includes, brought.
  • the coupling 15 between the piston rods 13 connected to the pickup holder 11 and the running bar 7 when pressing (upsetting and possibly punching the press block 25 ) is to be closed such that the annular groove 55 and the collar 56 on the closure disk 32b remain outside the transducer 26.
  • the profile temple is in the embodiment according to FIGS. 3a to 3g 41 made of a material and having an end bearing of a material provided that the use of a special die can be omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
  • Forging (AREA)
EP81104623A 1980-06-23 1981-06-16 Presse pour le filage indirect de métaux et appareil pour enlever des billettes "gelées" Expired EP0043025B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81104623T ATE6347T1 (de) 1980-06-23 1981-06-16 Indirekt-metallstrangpresse mit einrichtung zum entfernen eines ''eingefrorenen'' blockes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803023388 DE3023388A1 (de) 1980-06-23 1980-06-23 Indirekt-metallstrangpresse und arbeitsverfahren zum entfernen von eingefrorenen bloecken aus einer solchen presse
DE3023388 1980-06-23

Publications (2)

Publication Number Publication Date
EP0043025A1 true EP0043025A1 (fr) 1982-01-06
EP0043025B1 EP0043025B1 (fr) 1984-02-22

Family

ID=6105207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81104623A Expired EP0043025B1 (fr) 1980-06-23 1981-06-16 Presse pour le filage indirect de métaux et appareil pour enlever des billettes "gelées"

Country Status (6)

Country Link
US (1) US4809531A (fr)
EP (1) EP0043025B1 (fr)
JP (1) JPS5728618A (fr)
AT (1) ATE6347T1 (fr)
DE (2) DE3023388A1 (fr)
ES (1) ES8203243A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990006823A1 (fr) * 1988-12-17 1990-06-28 Aluminium Shapes Ltd Appareil d'extrusion
WO1995013150A1 (fr) * 1993-11-10 1995-05-18 Valery Nikolaevich Scherba Procede d'extrusion de metal a chaud avec l'aide active de forces de friction, et presse d'extrusion hydraulique prevue a cet effet
EP0818252A1 (fr) * 1996-07-11 1998-01-14 Kvaerner Metals Clecim Presse à filage inverse perfectionnée pour le déblocage d'une billette et procédé de mise en oeuvre

Families Citing this family (1)

* 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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB262472A (en) * 1925-12-04 1927-07-14 Hydraulik Ges Mit Beschraenkte Improvements relating to metal-extrusion presses
DE480957C (de) * 1925-09-10 1929-08-12 Oscar Serck Rohrstrangpresse mit beweglichem Aufnehmer
DE514735C (de) * 1928-07-27 1930-12-17 Fried Krupp Grusonwerk Akt Ges Hydraulische Strangpresse
GB370274A (en) * 1931-07-06 1932-04-07 Fielding And Platt Ltd Improvements in extrusion presses
DE570750C (de) * 1931-03-17 1933-02-20 Fried Krupp Grusonwerk Akt Ges Metallstrangpresse
DE1452320B2 (de) * 1965-11-11 1974-06-27 Demag-Hydraulik Gmbh, 4100 Duisburg Indirekt-Metallstrangpresse zum Herstellen von Rohren

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US715358A (en) * 1897-07-20 1902-12-09 American Brass Co Manufacture of various articles from copper or copper alloys.
US2858017A (en) * 1954-04-05 1958-10-28 Baldwin Lima Hamilton Corp Die shifting and extrusion cutting slide
JPS4914859A (fr) * 1972-06-06 1974-02-08
FR2305249A1 (fr) * 1975-03-27 1976-10-22 Secim Perfectionnements aux procedes de filage en inverse et dispositif pour la mise en oeuvre du procede
US4326399A (en) * 1978-03-14 1982-04-27 Secim Extrusion press operating by the indirect method
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
US4342212A (en) * 1980-09-02 1982-08-03 Sutton Engineering Company Indirect extrusion press

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE480957C (de) * 1925-09-10 1929-08-12 Oscar Serck Rohrstrangpresse mit beweglichem Aufnehmer
GB262472A (en) * 1925-12-04 1927-07-14 Hydraulik Ges Mit Beschraenkte Improvements relating to metal-extrusion presses
DE514735C (de) * 1928-07-27 1930-12-17 Fried Krupp Grusonwerk Akt Ges Hydraulische Strangpresse
DE570750C (de) * 1931-03-17 1933-02-20 Fried Krupp Grusonwerk Akt Ges Metallstrangpresse
GB370274A (en) * 1931-07-06 1932-04-07 Fielding And Platt Ltd Improvements in extrusion presses
DE1452320B2 (de) * 1965-11-11 1974-06-27 Demag-Hydraulik Gmbh, 4100 Duisburg Indirekt-Metallstrangpresse zum Herstellen von Rohren

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990006823A1 (fr) * 1988-12-17 1990-06-28 Aluminium Shapes Ltd Appareil d'extrusion
GB2243317A (en) * 1988-12-17 1991-10-30 Aluminium Shapes Ltd Extrusion apparatus
GB2243317B (en) * 1988-12-17 1992-11-04 Aluminium Shapes Ltd Extrusion apparatus
WO1995013150A1 (fr) * 1993-11-10 1995-05-18 Valery Nikolaevich Scherba Procede d'extrusion de metal a chaud avec l'aide active de forces de friction, et presse d'extrusion hydraulique prevue a cet effet
EP0818252A1 (fr) * 1996-07-11 1998-01-14 Kvaerner Metals Clecim Presse à filage inverse perfectionnée pour le déblocage d'une billette et procédé de mise en oeuvre
FR2750901A1 (fr) * 1996-07-11 1998-01-16 Clecim Sa Procede de deblocage d'une billette dans une presse a filer
US5931041A (en) * 1996-07-11 1999-08-03 Kvaerner Metals Clecim Reverse extruding press and process for releasing a billet

Also Published As

Publication number Publication date
ATE6347T1 (de) 1984-03-15
US4809531A (en) 1989-03-07
DE3023388A1 (de) 1982-01-21
EP0043025B1 (fr) 1984-02-22
JPS5728618A (en) 1982-02-16
ES502508A0 (es) 1982-04-01
ES8203243A1 (es) 1982-04-01
JPH0156843B2 (fr) 1989-12-01
DE3162365D1 (en) 1984-03-29

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