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EP2210686B1 - Presse pour presser à chaud un lopin en matrices fermées - Google Patents

Presse pour presser à chaud un lopin en matrices fermées Download PDF

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Publication number
EP2210686B1
EP2210686B1 EP20100150080 EP10150080A EP2210686B1 EP 2210686 B1 EP2210686 B1 EP 2210686B1 EP 20100150080 EP20100150080 EP 20100150080 EP 10150080 A EP10150080 A EP 10150080A EP 2210686 B1 EP2210686 B1 EP 2210686B1
Authority
EP
European Patent Office
Prior art keywords
press
punch element
piston
hydraulic cylinder
driving
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.)
Active
Application number
EP20100150080
Other languages
German (de)
English (en)
Other versions
EP2210686A8 (fr
EP2210686A1 (fr
Inventor
Domenico Caggioli
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.)
Mecolpress SpA
Original Assignee
Mecolpress SpA
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 Mecolpress SpA filed Critical Mecolpress SpA
Publication of EP2210686A1 publication Critical patent/EP2210686A1/fr
Publication of EP2210686A8 publication Critical patent/EP2210686A8/fr
Application granted granted Critical
Publication of EP2210686B1 publication Critical patent/EP2210686B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/027—Special design or construction with punches moving along auxiliary lateral directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/10—Drives for forging presses
    • B21J9/18—Drives for forging presses operated by making use of gearing mechanisms, e.g. levers, spindles, crankshafts, eccentrics, toggle-levers, rack bars

Definitions

  • the present invention relates to a press for hot pressing billets and the like.
  • the above mentioned toolings comprise one or more movable punch elements which are mounted, by resilient mounting support elements, on the bottom half-die or mold.
  • the top half-die is directly fixed to the sledge or ram of the press.
  • the top half-die As the press ram is downward driven, the top half-die, as it contacts the bottom half-die, presses the resilient system supporting the bottom half-die holding means and, in the meanwhile, through one or more crank levers or the like, causes all the punch elements to simultaneously penetrate into the material being pressed.
  • a prior approach provides to use a driving system with corresponding hydraulic cylinders directly arranged on each punch element; however, such approach, because of the required high force and operating speed, requires to use high power driving motors, and corresponding large displacement hydraulic pumps as well as large amounts of circulating oil.
  • a forging press that has the features set forth in the preamble of claim 1, is known from DE 19933998 .
  • the aim of the present invention is to overcome the above mentioned problems, by providing a press for hot molding billets and the like, allowing to manage the driving of the punch elements in an adjustable time and with variable operating strokes between respective punch elements, without using large displacement hydraulic pumps.
  • a main object of the invention is to provide such a press adapted to operate with large pressing forces, while facilitating the forming of the workpieces, to provide high quality end pressed products.
  • Another object of the present invention is to provide such a press which, owing to its specifically designed constructional features, is very reliable and safe in operation.
  • Yet another object of the present invention is to provide such a press for hot pressing or molding billets and the like, which can be easily made and which, moreover, is very competitive from a mere economic standpoint.
  • the press for hot pressing billets and the like which has been generally indicated by the reference number 1, comprises a bearing framework 2, which supports the operating equipment or tooling with a bottom mold or forging die 3 which is coupled with rigid supporting elements.
  • top forging die 4 is coupled to the ram or sledge 5 of the press, which is advantageously driven by hydraulic driving means.
  • a plurality of movable punch elements are provided.
  • the main feature of the invention is that the movable punch elements 10 comprise a punch member, indicated by the reference number 11, which is introduced to provide a forming or shaping operation on the billet 8, into the corresponding mold or die.
  • a further very important feature of the invention is that two toggle levers are herein provided, and, more specifically, a first toggle lever 13, pivoted to the movable carriage 14 supporting the punch member 11, and adapted to be driven with respect to the forging die.
  • the first toggle lever 13 in particular, is pivoted, at the other end portion thereof, to a fixed point of the punch bearing carriage support, coupled to the base of the bottom die bearing equipment, which is rigidly fixed to the framework 2.
  • a hydraulic cylinder 20 the piston stem 21 of which is coupled to the pivot point of the levers 16 and 13 is herein provided.
  • This assembly comprises the toggle levers and movable carriage and may be arranged both vertically and horizontally on its supporting base.
  • inventive press may comprise any desired number of punch elements, as shown, for example, in figures 5 and 6 , which show press embodiments including four and three punch elements respectively.
  • the telescopically sliding movable carriage will support the punch element or member 11 to be driven for introducing it for engaging the pivot region of the levers and cylinder.
  • the pressing cylinder comprises, as is shown in figures 9 and 10 , a first piston 30 coupled to the lever pivot stem 21, thereby allowing the punch element to be easily introduced into and withdrawn from the die.
  • a second piston 35 projecting from a rear flange 36 for adjusting the piston stroke is herein provided.
  • the adjustment of the full stroke of the punch element is performed by driving and locating the second piston 35 in the cylinder chamber directly through the electrohydraulic system, generally indicated by the reference number 40, which also allows to electronically detect the achieved position.
  • each said assembly will be an actually independent and autonomous operating arrangement.

Landscapes

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

Claims (5)

  1. Presse pour le pressage à chaud de billettes et objets similaires, ladite presse (1) comprenant : une matrice de forgeage à la presse inférieure (3), une matrice de forgeage supérieure (4) associée à la masse (5) de ladite presse, sur ladite matrice de forgeage inférieure (3) étant placé au moins un élément de poinçon mobile (10) pour former la pièce (8), un moyen d'entraînement pour entraîner ledit élément de poinçon mobile (10), ledit moyen d'entraînement comprenant deux leviers articulés (13, 16) fonctionnant entre ledit élément de poinçon mobile (10) et un point fixe,
    caractérisée en ce qu'elle comprend en outre un vérin hydraulique (20) fonctionnant au niveau d'un point de pivotement desdits leviers articulés (13, 16) pour entraîner ledit élément de poinçon mobile (10), et en ce que ledit vérin hydraulique (20) comprend un premier piston de vérin hydraulique (30) couplé à une tige de piston (21) qui fonctionne au niveau dudit point de pivotement et un deuxième piston (35) faisant saillie depuis une bride arrière (36) dudit vérin hydraulique (20) pour régler la course fonctionnelle dudit élément de poinçon (10), ladite matrice de forgeage à la presse inférieure (3) étant couplée rigidement à la base de l'équipement et à un cadre de base (2) à travers des éléments de support résilients.
  2. Presse selon la revendication 1, caractérisée en ce qu'elle comprend un chariot de presse mobile (14) supportant, en une partie d'extrémité de celui-ci, au moins un dit élément de poinçon (10) et étant, à l'autre partie d'extrémité de celui-ci, couplé à l'un (13) desdits leviers articulés.
  3. Presse selon la revendication 1, caractérisée en ce qu'elle comprend une pluralité d'éléments de poinçon (10) entraînés de façon mutuellement indépendante.
  4. Presse selon la revendication 1, caractérisée en ce que la course totale dudit élément de poinçon mobile (10) est réglée en entraînant et en agençant le deuxième piston, ou piston arrière (35) à l'intérieur de la chambre du vérin hydraulique (20).
  5. Presse selon la revendication 1 ou 4, caractérisée en ce qu'elle comprend un actionneur électro-hydraulique (40) adapté pour entraîner directement et positionner ledit deuxième piston (35) dans la chambre dudit vérin (20) pour le réglage de la course complète dudit élément de poinçon mobile (10), et pour fonctionner en tant que transducteur de position absolue pour détecter la position atteinte.
EP20100150080 2009-01-21 2010-01-05 Presse pour presser à chaud un lopin en matrices fermées Active EP2210686B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI2009A000056A IT1392795B1 (it) 2009-01-21 2009-01-21 Pressa per lo stampaggio a caldo di billette e simili.

Publications (3)

Publication Number Publication Date
EP2210686A1 EP2210686A1 (fr) 2010-07-28
EP2210686A8 EP2210686A8 (fr) 2010-12-22
EP2210686B1 true EP2210686B1 (fr) 2012-12-26

Family

ID=41376398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100150080 Active EP2210686B1 (fr) 2009-01-21 2010-01-05 Presse pour presser à chaud un lopin en matrices fermées

Country Status (3)

Country Link
EP (1) EP2210686B1 (fr)
ES (1) ES2420586T3 (fr)
IT (1) IT1392795B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9770841B2 (en) 2014-05-30 2017-09-26 Saint-Gobain Ceramics & Plastics, Inc. Hot press and method of using

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900012969A1 (it) 2019-07-26 2021-01-26 Mecolpress S P A Apparecchiatura per lo stampaggio di materiali.
WO2023031767A1 (fr) * 2021-08-30 2023-03-09 Thorside S.R.L. Presse pour forgeage à chaud de composants métalliques

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES397281A1 (es) * 1971-05-03 1975-03-01 Mecolpress Di Giulio Molinari Perfeccionamientos en la construccion de prensas para el estampado en caliente del laton.
DE19933998A1 (de) * 1999-07-20 2001-01-25 Skf Gmbh Verfahren und Vorrichtung zum Pressen eines Formteils
DE102006023721B3 (de) * 2006-05-19 2007-08-02 Wepuko Hydraulik Gmbh Schmiedevorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9770841B2 (en) 2014-05-30 2017-09-26 Saint-Gobain Ceramics & Plastics, Inc. Hot press and method of using

Also Published As

Publication number Publication date
EP2210686A8 (fr) 2010-12-22
ES2420586T3 (es) 2013-08-26
ITMI20090056A1 (it) 2010-07-22
IT1392795B1 (it) 2012-03-23
EP2210686A1 (fr) 2010-07-28

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