EP0428989B1 - Appareil pour le chargement des billettes et éventuellement des disques de poussée dans des presses d'extrusion de métaux horizontales - Google Patents

Appareil pour le chargement des billettes et éventuellement des disques de poussée dans des presses d'extrusion de métaux horizontales Download PDF

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Publication number
EP0428989B1
EP0428989B1 EP90121768A EP90121768A EP0428989B1 EP 0428989 B1 EP0428989 B1 EP 0428989B1 EP 90121768 A EP90121768 A EP 90121768A EP 90121768 A EP90121768 A EP 90121768A EP 0428989 B1 EP0428989 B1 EP 0428989B1
Authority
EP
European Patent Office
Prior art keywords
prongs
loading
press
loading tray
charging
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 - Lifetime
Application number
EP90121768A
Other languages
German (de)
English (en)
Other versions
EP0428989A2 (fr
EP0428989A3 (en
Inventor
Urban Richardt
Heinrich Ziemons
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 GmbH
SMS Hasenclever Maschinenfabrik GmbH
Original Assignee
SMS Hasenclever GmbH
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 GmbH, SMS Hasenclever Maschinenfabrik GmbH filed Critical SMS Hasenclever GmbH
Publication of EP0428989A2 publication Critical patent/EP0428989A2/fr
Publication of EP0428989A3 publication Critical patent/EP0428989A3/de
Application granted granted Critical
Publication of EP0428989B1 publication Critical patent/EP0428989B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21C23/21—Presses specially adapted for extruding metal
    • B21C23/212—Details
    • 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
    • B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block

Definitions

  • Blocks and, if necessary, press disks are loaded into horizontal metal extrusion presses by means of devices consisting of at least one loading cradle, but usually two or more charging cradles arranged one behind the other along the press axis, each of which can be inserted into the press axis carried by a swivel arm or a push rod and can be brought out of it again.
  • Loading can take place between the block receiver and the press ram, for which purpose a corresponding stroke of the press ram is required.
  • the block pick-up of the extrusion press which is provided with a displacement device for this purpose, is usually first moved via the press ram (DE-C-519 038) or, in the case of metal extrusion presses set up for indirect pressing, optionally via the die ram (DE-A-30 29 234), so that the space is accessible between the press tool and the ram. After inserting a block into the press axis, the block pick-up is moved back and picks up the block.
  • the feed of the block receiver is usually interrupted for the time a charging cradle is being deployed in order to rule out a collision between the block receiver and the charging cradle.
  • the charging cradle facing the block receiver is also different from the other charging cradle based on the Support arms according to DE-C-519 038 slidably arranged, the width of the charging cradles determining the surface-friendly support of the blocks limits the possible space gain.
  • the invention is based on the devices for loading blocks and, if appropriate, pressing disks into lying metal extrusion presses, which have two or more loading trays arranged one behind the other along the press axis and carried by swivel arms or pushing rams, which can be inserted into the press axis and can be removed again from the press axis, and in the manner of pliers can be divided and opened and closed by means of a pivotable part and of which at least the second charging cradle and any further charging cradles together with their pivoting arm or push rod can be or are displaceable in the direction of the press axis.
  • the displaceability of one charging cradle against the other presupposes a distance between the charging cradles, the width of the charging cradles taken together not being allowed to be more than the smallest block length.
  • the distance between the charging cradles does not allow the loading of divided blocks, the sections of which do not bridge the gap between the charging cradles sufficiently.
  • the loss of time is a further disadvantage of the known block loaders.
  • the object of the invention is to be able to load blocks of different lengths, divided blocks and blocks together with a press disk safely and without interruption with charging cradles of sufficient width.
  • This object is achieved according to the invention by a block loader with the features stated in claim 1.
  • the separate charging cradles, each with a swivel arm or push rod, can add up to a loading width of the total the width of the individual charging cradles and, according to the invention, also move together to a total width which is less than the width of the individual charging cradles combined. This eliminates the need to extend the second or further charging cradle and thus stop the component of the press that can be moved for loading, for example the block receiver.
  • a complete moving together of the charging cradles to the width of a single charging cradle is achieved with the features of claim 2.
  • JP-A-54 136 560 is to be mentioned, which, in order to simplify the construction of block loading devices, only provides a single, one-piece charging cradle carried by a single swivel arm, this charging cradle being attached to it by a likewise one-piece, alone with the Side supports for the block provided charging cradle is extended.
  • the charging cradle and auxiliary charging cradle which are open because of their one-piece design, do not allow the block to be loaded to be gripped and thus rapid movements during charging.
  • charging cradle and auxiliary charging cradle are alternately provided with tines and gaps at their mutually facing ends, so that the auxiliary charging cradle can be displaced to the charging cradle by the amount of tines and gaps in the direction of the press axis.
  • auxiliary charging cradle Removal of the auxiliary charging cradle from the charging cradle in the direction of the press axis to accommodate particularly long blocks is not possible, or only to a limited extent, because of the connection between the charging cradle and auxiliary charging cradle, and before swiveling out the swivel arm with charging cradle, the auxiliary charging cradle, which has the side supports for the Block is provided, swung out or lowered.
  • the metal extrusion press shown in FIG. 1 consists of a cylinder spar 1, a counter spar 2 and anchors 3 connecting them.
  • Guides 4 on the anchors 3 carry a running spar 5 which is guided by a plunger 7 guided and acted upon in the cylinder 6 of the cylinder spar 1 in the direction of the press axis is moved backwards in the pressing direction and by piston-cylinder units 8.
  • the barrel 5 carries one Press ram 9.
  • the guides 4 carry a spar 10 which is provided with a block receiver 11 and can be moved by piston-cylinder units 12 in the direction of the press axis.
  • a die 14 is fastened to the counter beam 2 in a holder 13. To load a block to be pressed, the spar 10 is pushed with the block receiver 11 over the press ram 9, so that the rum is exposed between the die 14 and a press disk 15 on the end face of the press ram 9.
  • the device for loading blocks consists of a bearing block 16 which rotatably carries a shaft 18 in two bearings 17, which shaft is formed between the bearings 17 as a square or spline shaft.
  • the shaft 18 is pivoted in one direction or the other via the drive lever 19.
  • swivel arm 24 and 25 On the shaft 18, two swivel arms 24 and 25 are attached in a rotationally fixed manner, the swivel arm 24 also being fastened axially to the shaft 18, while the swivel arm 25 is axially displaceably seated on the shaft 18 and by a piston-cylinder unit 26 which is in the drive lever 19 27 is supported, is moved axially.
  • Each swivel arm 24 and 25 carries a charging cradle 28, 29.
  • the swivel arms 24 and 25 To accommodate a block 30, the swivel arms 24 and 25 are in the swivel position shown in dashed lines in FIG. 3, in which they take over the metal blocks 30, which are conveyed by an oven and heated to the pressing temperature.
  • the swivel arms 24 and 25 are pivoted via the shaft 18 in such a way that the block 30 located in their charging cradles 28 and 29 reaches the free rum between the die 14 and the pressure plate 15 in the press axis.
  • the spar 10 with the block receiver 11 is moved towards the die 14 by means of the piston-cylinder units 12, the block receiver 11 being placed over the block 30.
  • the swivel arm 25 is axially displaced on the shaft 18 by means of the piston-cylinder unit 26, up to the position shown in broken lines in FIG.
  • the charging cradles 28 and 29 are fork-shaped and the charging cradle 28 consists of tines 31 and the charging cradle 29 consists of tines 32.
  • the tines 31 are composed of yoke pieces 28a, 28b and the tines 32 are composed of yoke pieces 29a and 29b, the yoke piece 28a the end of the swivel arm 24 and the yoke piece 29a forms the end of the swivel arm 25, the yoke piece 28b can be swiveled about an axis 33 in the swivel arm 24 and the yoke piece 29b about an axis 33 in the swivel arm 25.
  • the yoke pieces 28b and 29b are each pivoted by a piston-cylinder unit 34 which are articulated on the pivot arms 24 and 25, respectively.
  • the charging cradle 29 completely overlaps with the charging cradle 28 in the position of the swivel arm 25 shown in broken lines, which is due to the fork-like design of the charging cradles 28 and 29 with an offset arrangement of the tines 31 and 32, in which the tines 31 the charging cradle 28 face the gaps between the prongs 32 of the charging cradle 29 and vice versa.
  • the piston-cylinder units 34 are acted upon jointly on both swivel arms 24 and 25, so that the yoke pieces 28b and 29b jointly swivel about their axes 33 into the position shown in broken lines in FIG. 3, so that the swivel arms 24 and 25 with the open arms Charging cradles 28 and 29 can be pivoted together past the block 30.
  • a metal extrusion press in which a press disk 15 is used, which is firmly connected to the press die 9, that is to say is not loaded with the block 30 for each pressing operation, as is common practice in light metal extrusion presses . If you want to work with a loose press disk 15, shorter blocks or longer charging cradles must be used to ensure that there is also space for the pressing disks on the charging cradles.
  • the length of the charging cradles 28 and 29 is determined from the sufficient support for the blocks 30 to be loaded and the length of the blocks 30 determines the distance A between the charging cradles 28 and 29 in the starting position.
  • more than two charging cradles can also be provided and designed according to the principle of the invention, as is shown in principle for three charging cradles in FIGS. 5 and 6.
  • FIG. 5 shows the three charging cradles in an overlapping position
  • FIG. 6 shows an opened position that has been moved apart.
  • the swivel arms with the yoke pieces carrying the tines are denoted by 35, 36 and 37, the swivel arm 35 being a charging cradle 39 made of prongs 38, the swivel arm 36 being a charging cradle 41 made of prongs 40 and the swivel arm 31 being a charging cradle 43 made of prongs 42 wearing.
  • the tines 38, 40, 42 are in turn offset from one another with the yoke pieces of the swivel arms 35, 36 and 37 so that a displacement of the swivel arms 36 and 37 according to arrows C and D leads to a complete overlap of the tines 38, 40 and 42.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)

Claims (2)

  1. Appareil pour le chargement de billettes (30) et éventuellement de disques de poussée dans des presses horizontales d'extrusion de métaux, comprenant une première (28, 39), une seconde (29, 41) et éventuellement une autre (43) coquille de chargement (28, 29, 39, 41, 43) agencées les unes derrière les autres le long de l'axe de presse et portées par des bras basculants (24, 25, 35, 36, 37) ou des coulisseaux, qui peuvent être amenées dans l'axe de presse entre un outil de presse (14) ou un fouloir de presse et un récepteur de billettes (11) et ressorties de l'axe de presse, lesdites coquilles pouvant être ouvertes et fermées séparément à la manière d'une pince au moyen d'une partie basculante (28b, 29b), et parmi lesquelles au moins la seconde coquille de chargement (29, 41) et éventuellement une autre coquille de chargement (43) sont mobiles ensemble avec leurs bras basculants (25, 36, 37) ou coulisseaux de poussée en direction de l'axe de presse,
    caractérisé en ce que chaque coquille de chargement (28, 29 ; 39, 41, 43) est réalisée en forme d'une fourche avec des dents (31, 32 ; 38, 40, 42) et des intervalles interdentaires en décalage par rapport à l'autre coquille de chargement ou aux autres coquilles de chargement, de sorte que chaque coquille de chargement (29 ; 41, 43) peut être amenée en direction de l'axe de presse avec ses dents (32 ; 40, 42) dans les intervalles interdentaires entre les dents (31 ; 38) de l'autre coquille de chargement (28) ou des autres coquilles de chargement (41, 43), et en ce que chaque bras basculant (24, 25) ou coulisseau de poussée forme à son extrémité libre un premier élément d'étrier (28a, 29a) pour une partie des dents (31, 32) de sa coquille de chargement (28, 29), auquel est relié en articulation un second élément d'étrier (28b, 29b), en basculement autour d'un axe (33) parallèle à l'axe de presse, pour l'autre partie des dents de sa coquille de chargement (28, 29).
  2. Appareil de chargement selon la revendication 1, caractérisé en ce que les dents (31, 32 ; 38, 40, 42) et les intervalles interdentaires entre les dents (31, 32 ; 38, 40, 42) s'étendent sur toute la longueur axiale de chacune des coquilles de chargement (28, 29 ; 39, 41, 43), en ce que les étriers (28a, 28b, 29a, 29b), qui regroupent les dents (31, 32 ; 38, 40, 42), formés par les extrémités des bras basculants (24, 25 ; 35, 36, 37) ou les coulisseaux de poussée, et situés à l'extérieur de la périphérie des dents (31, 32 ; 38, 40, 42) et des intervalles interdentaires, sont reliés à leurs dents (31 à 24, 28a, 28b ; 32 à 25, 29a, 29b ; 38 à 35 ; 40 à 36 ; 42 à 37), et en ce que la largeur des étriers (28a, 28b, 29a, 29b) ensemble avec leurs bras basculants ou coulisseaux de poussée (24, 25 ; 35, 36, 37) est inférieure à la longueur axiale des dents (31, 32 ; 38, 40, 42).
EP90121768A 1989-11-23 1990-11-14 Appareil pour le chargement des billettes et éventuellement des disques de poussée dans des presses d'extrusion de métaux horizontales Expired - Lifetime EP0428989B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3938790A DE3938790C1 (fr) 1989-11-23 1989-11-23
DE3938790 1989-11-23

Publications (3)

Publication Number Publication Date
EP0428989A2 EP0428989A2 (fr) 1991-05-29
EP0428989A3 EP0428989A3 (en) 1991-12-27
EP0428989B1 true EP0428989B1 (fr) 1994-07-13

Family

ID=6394033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90121768A Expired - Lifetime EP0428989B1 (fr) 1989-11-23 1990-11-14 Appareil pour le chargement des billettes et éventuellement des disques de poussée dans des presses d'extrusion de métaux horizontales

Country Status (2)

Country Link
EP (1) EP0428989B1 (fr)
DE (2) DE3938790C1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0574592B1 (fr) * 1992-04-15 1994-03-16 SMS Hasenclever GmbH Appareil pour le chargement des bilettes et éventuellement des disques de poussée dans des presses horizontales d'extrusion de métaux
DE19606955C2 (de) * 1996-02-26 1998-04-09 Sms Schloemann Gmbh Vorrichtung zum Laden eines Blockes und gegebenenfalls einer Preßscheibe in eine liegende Metallstrangpresse
DE10227488B3 (de) * 2002-06-19 2004-02-12 Sms Eumuco Gmbh Strang-und Rohrpresse
ITMI20030351A1 (it) * 2003-02-27 2004-08-28 Danieli Off Mecc Caricatore di billlette per presse per estrusione.
DE102004023611A1 (de) * 2004-05-10 2005-12-01 Sms Eumuco Gmbh Strang- und Rohrpresse
CN107639126A (zh) * 2017-11-09 2018-01-30 江苏启力锻压机床有限公司 卧式双模冷挤压机构及成形生产工艺

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE519038C (de) * 1929-02-05 1931-02-23 Fried Krupp Grusonwerk Akt Ges Liegende Strangpresse mit beweglicher Blocktragvorrichtung
DE1156374B (de) * 1959-09-25 1963-10-31 Hydraulik Gmbh Blockhaltevorrichtung fuer liegende Metallstrangpresse
US3416349A (en) * 1966-06-29 1968-12-17 Baldwin Lima Hamilton Corp Extrusion apparatus and method
JPS54136560A (en) * 1978-04-14 1979-10-23 Ube Ind Ltd Billet loader for extrusion press
DE3029234A1 (de) * 1980-08-01 1982-04-01 Schloemann-Siemag AG, 4000 Düsseldorf Metallstrangpresse zum indirekten und direkten verpressen von metallen mit einer mit dem aufnehmerhalter verbundenen vorrichtung zum abtrennen des pressrestes und zum auswechseln von matrizen

Also Published As

Publication number Publication date
DE3938790C1 (fr) 1990-12-06
EP0428989A2 (fr) 1991-05-29
DE59006422D1 (de) 1994-08-18
EP0428989A3 (en) 1991-12-27

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