EP0043025B1 - Indirekt-Metallstrangpresse mit Einrichtung zum Entfernen eines "eingefrorenen" Blockes - Google Patents

Indirekt-Metallstrangpresse mit Einrichtung zum Entfernen eines "eingefrorenen" Blockes Download PDF

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Publication number
EP0043025B1
EP0043025B1 EP81104623A EP81104623A EP0043025B1 EP 0043025 B1 EP0043025 B1 EP 0043025B1 EP 81104623 A EP81104623 A EP 81104623A EP 81104623 A EP81104623 A EP 81104623A EP 0043025 B1 EP0043025 B1 EP 0043025B1
Authority
EP
European Patent Office
Prior art keywords
ram
billet
closure
hollow
head
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.)
Expired
Application number
EP81104623A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0043025A1 (de
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/de
Application granted granted Critical
Publication of EP0043025B1 publication Critical patent/EP0043025B1/de
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, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS 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, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS 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, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS 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 for metal extruding
    • B21C35/04—Cutting-off or removing waste

Definitions

  • the invention relates to an indirect metal extrusion press, which consists of a press frame, which is formed from a cylinder spar supporting the main press cylinder, a counter spar and tie rods connecting the cylinder spar and the counter spar. Furthermore, the indirect metal extrusion press consists of a hollow punch supported on the counter spar, which in turn supports the die, a axially displaceable, axially displaceable pick-up holder carrying the pick-up and a moving die moved by the main plunger, carrying a locking punch with a locking disk. As far as pipes or hollow profiles are to be produced, the presses are additionally provided with a punch which can be displaced through the then punched-through sealing punch into the die by pistons in cylinders.
  • frezen blocks are to be understood as blocks which, due to malfunctions, no longer have the temperature sufficient for pressing with high degrees of deformation, can no longer or should not be brought to a sufficient temperature in the press, or for other reasons, for example Breakage of the die, can not be pressed further.
  • the aim of the invention is to improve the indirect metal extrusion press with its devices in order to make it possible to remove "frozen" blocks from the bore of the receiver with certainty.
  • closure stamp can be exchanged for a hollow stamp or a profile stamp which only partially fills the available cross section, with a circumscribing circle of the diameter of the closure stamp and with profile cutouts which are open to the outside, or a hollow stamp or a
  • a sealing disc is also assigned to the profile stamp of the corresponding design, and that the locking disc can be removed from a block "frozen" in the sensor, whereupon the frozen block is pressed indirectly against the hollow stamp or profile stamp provided with an attached or molded auxiliary die against the actual pressing direction.
  • DE-B-1 452 320 it is known from DE-B-1 452 320 to arrange a holder movable transversely to the press axis in an indirect metal extrusion press for the production of tubes on the press beam, on which a closure piece and a compression die formed longer than the closure piece in the pressing direction is attached.
  • the compression die compresses the block to be pressed, before a perforated mandrel, which is guided and centered through the closure piece, punctures the block before being pressed out, as a result of which the block rises backwards.
  • the sealing disc used is usually clamped in the sensor bore and can therefore only be removed with considerable force.
  • for expanding the sealing disk it can be connected in a tensile manner to the sealing punch or hollow or profile punch.
  • the "frozen" block is pressed continuously or in a multiple offset stroke, and separated extruded strand sections are separated into chargeable scrap pieces until the block remnant can be pressed out, for which purpose, as is known per se, a bushing between the barrel spar and the receiver of a slightly larger inner diameter than the bore of the transducer for receiving the block residue.
  • closure disk and the closure, hollow or profile stamp have ends formed by back turns at their mutually facing ends and can be connected by a clamp
  • the method of operation according to a further feature of the invention is to be supplemented in such a way that the pickup holder and the spar when pressed in driven 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 with collar and backward rotation protrudes from the transducer.
  • 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 guided axially movably 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.
  • 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.
  • clamping connections are designated, which sit in the spar 7 and encompass the piston rods 13, through which the spar 7 can be firmly connected to the piston rods 13 so that the spar 7 can be firmly connected to both the pickup holder 11 and the piston 12 .
  • a piercing mandrel is required, which is fastened to a piercing mandrel traverse 16.
  • the piercing mandrel traverse 16 is guided so as to be axially movable in windows 17 which are incorporated into the frame 6 connecting the running beam 7 to the plunger 5.
  • 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 stamp holder 27 supports a die 29.
  • a closure stamp 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 as far as the die 29 has moved and - if a hollow profile is to be pressed - after the mandrel 34 fastened in the mandrel holder 33 to the mandrel cross member 16 has penetrated the metal block 25 until the mandrel tip is in the opening of the die 29, the clamp connection 15 is closed, so that the pick-up holder 11 with transducer 26 is connected to the walking beam 7.
  • FIGS. 2a and 3a A corresponding initial situation is given in FIGS. 2a and 3a if it is assumed that the block 25 located in the transducer 26 after pressing (FIG. 2a) or after compression from the beginning (FIG. 3a) using the maximum Do not squeeze the pressing force with the normal degree of deformation.
  • the locking stamp 31 is first moved back into its starting position.
  • the pickup closure piece 32a is then removed, which can be done with simple tools or special pulling devices if the pickup closure piece 32a is provided with corresponding catches or threads for connection to the puller. It is also possible to connect the pick-up closure piece 32a and the closure punch 31 to one another by means of a threaded bolt, and thus to have the pick-up closure piece 32a pulled out from the closure punch 31. Then 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 member 7 is moved back into the starting position with the hollow punch 36 into the position shown in FIG. 2e.
  • 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, as 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 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 sensor.
  • the rest of the block 25 is fixed in the socket 46 by means of clamping screws 47, so that when the barrel 7 is withdrawn from the socket 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 bush 46.
  • FIGS. 3a to 3g show details of the exemplary embodiment according to FIGS. 3a to 3g on a larger scale.
  • 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 coupling 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 of the clamp 43 is 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 punch 41 is made of one material or is provided with an end face support made of one material, that the use of a special matrix can be omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
  • Forging (AREA)
EP81104623A 1980-06-23 1981-06-16 Indirekt-Metallstrangpresse mit Einrichtung zum Entfernen eines "eingefrorenen" Blockes Expired EP0043025B1 (de)

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
DE3023388 1980-06-23
DE19803023388 DE3023388A1 (de) 1980-06-23 1980-06-23 Indirekt-metallstrangpresse und arbeitsverfahren zum entfernen von eingefrorenen bloecken aus einer solchen presse

Publications (2)

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

Family

ID=6105207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81104623A Expired EP0043025B1 (de) 1980-06-23 1981-06-16 Indirekt-Metallstrangpresse mit Einrichtung zum Entfernen eines "eingefrorenen" Blockes

Country Status (6)

Country Link
US (1) US4809531A (enrdf_load_stackoverflow)
EP (1) EP0043025B1 (enrdf_load_stackoverflow)
JP (1) JPS5728618A (enrdf_load_stackoverflow)
AT (1) ATE6347T1 (enrdf_load_stackoverflow)
DE (2) DE3023388A1 (enrdf_load_stackoverflow)
ES (1) ES502508A0 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2139158C1 (ru) * 1998-06-15 1999-10-10 Открытое акционерное общество "Белокалитвинское металлургическое производственное объединение" Горизонтальный трубопрофильный гидравлический пресс

Families Citing this family (4)

* 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
GB8829507D0 (en) * 1988-12-17 1989-02-01 Aluminium Shapes Ltd Method and apparatus for extrusion
RU2105621C1 (ru) * 1993-11-10 1998-02-27 Валерий Николаевич Щерба Способ горячего экструдирования металла с активным действием сил трения и гидравлический экструзионный пресс для его осуществления
FR2750901B1 (fr) * 1996-07-11 1998-11-06 Clecim Sa Procede de deblocage d'une billette dans une presse a filer

Family Cites Families (13)

* 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.
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
US2858017A (en) * 1954-04-05 1958-10-28 Baldwin Lima Hamilton Corp Die shifting and extrusion cutting slide
DE1452320C3 (de) * 1965-11-11 1975-02-06 Demag Ag, 4100 Duisburg Indirekt-Metallstrangpresse zum Herstellen von Rohren
JPS4914859A (enrdf_load_stackoverflow) * 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2139158C1 (ru) * 1998-06-15 1999-10-10 Открытое акционерное общество "Белокалитвинское металлургическое производственное объединение" Горизонтальный трубопрофильный гидравлический пресс

Also Published As

Publication number Publication date
ATE6347T1 (de) 1984-03-15
DE3162365D1 (en) 1984-03-29
DE3023388A1 (de) 1982-01-21
ES8203243A1 (es) 1982-04-01
JPH0156843B2 (enrdf_load_stackoverflow) 1989-12-01
US4809531A (en) 1989-03-07
EP0043025A1 (de) 1982-01-06
JPS5728618A (en) 1982-02-16
ES502508A0 (es) 1982-04-01

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