EP1281508A2 - Presse et procédé pour actionner une presse - Google Patents

Presse et procédé pour actionner une presse Download PDF

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Publication number
EP1281508A2
EP1281508A2 EP02015334A EP02015334A EP1281508A2 EP 1281508 A2 EP1281508 A2 EP 1281508A2 EP 02015334 A EP02015334 A EP 02015334A EP 02015334 A EP02015334 A EP 02015334A EP 1281508 A2 EP1281508 A2 EP 1281508A2
Authority
EP
European Patent Office
Prior art keywords
press
eccentric
rotary drive
motor
stroke
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Withdrawn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
EP02015334A
Other languages
German (de)
English (en)
Other versions
EP1281508A3 (fr
Inventor
Anton Bauch
Wilfried Markeli
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.)
KOMAGE GELLNER MASCHF
Komage Gellner Maschinenfabrik KG
Original Assignee
KOMAGE GELLNER MASCHF
Komage Gellner Maschinenfabrik KG
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 KOMAGE GELLNER MASCHF, Komage Gellner Maschinenfabrik KG filed Critical KOMAGE GELLNER MASCHF
Publication of EP1281508A2 publication Critical patent/EP1281508A2/fr
Publication of EP1281508A3 publication Critical patent/EP1281508A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/14—Control arrangements for mechanically-driven presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B30B1/266—Drive systems for the cam, eccentric or crank axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/005—Control arrangements

Definitions

  • the invention relates to a press with a controllable stroke-time profile for the production of molded parts from a fine-grained mass. It also relates to a method for operating the press.
  • the stroke-time profile of the hydraulic presses of the aforementioned type which directly generate the press stroke can be controlled practically as desired by appropriately controlling the flow quantity of the hydraulic fluid supplied. This means, for example, that idle travel paths outside the die can be traversed faster, delays in pressing for ventilation can be set up and more.
  • the stroke is derived from a rotating eccentric shaft via connecting rods.
  • the rotary drive of the eccentric shaft regularly consists of an electric motor with a flywheel and a gear.
  • the main advantages of the eccentric press are a quick work sequence and an inherently favorable force-displacement curve during the stroke insofar as the greatest force is generated at the end of the press stroke.
  • the motor can run smoothly and can therefore be supported by the flywheel.
  • the invention has for its object a faster working press of the beginning to create the kind mentioned.
  • this purpose is achieved in that an eccentric press with a an electric motor having a rotary drive is provided, the angular velocity is changeable during a press cycle.
  • An electric motor with a correspondingly strong torque can be used, whose angular velocity can be changed in one revolution, preferably to towards the negative range, i.e. standstills and even sternage steps are possible.
  • a stepper motor and a servomotor are particularly suitable.
  • an asynchronous motor can also be used, which has a controllable one Coupling is connected to the eccentric shaft.
  • the asynchronous motor runs continuously and is coupled and uncoupled so that the angular speed of the drive between one fixed value and zero is changeable.
  • the clutch is equipped with a brake be combined in the manner of a brake motor, which can also be used in this respect.
  • two asynchronous motors arranged at the two ends of the eccentric shaft with each other Reverse direction can also the angular speed of this rotary drive switch to the negative range.
  • the method according to the invention accordingly consists in operating the eccentric press in the way that the angular speed of the rotary drive changes during a press cycle becomes.
  • the angular velocity is changed in the form of change of direction, the entire movement of the electric motor and the eccentric shaft as a reciprocating pivoting movement performed; the swept angle is preferably less than 180 °.
  • FIG. 1 shows a press frame 1 with a base part 2, two from the base part 2 upwardly extending columns 3 and a cross member connecting their upper ends 4th
  • the columns 3 consist of sleeves 5 surrounded on a lower section of their length, opposite to them at their ends sealed by bellows 6, not visible Drawbars.
  • the base part 2 designed to form a closed housing is shown open in FIG. 1.
  • An externally attached to the base part 2 only schematically represented electric motor 10 projects with its output shaft 11 into the housing and through the hollow right eccentric 8 into the eccentric shaft 7 driven thereby, a second electric motor could, preferably offset at an angle, on the other Side of the base part 2 be attached.
  • the base part 2 receives a hydraulic lifting cylinder 12. Its piston rod 13 emerges in the middle between the columns 3 at the top from the base part 2 as a short stamp, who carries a clutch plate 14.
  • An annular, rigid lower punch support 15 also rises on the base part.
  • the mounting frame 16 comprises a plate 35 guided on the rods 24 and displaceable by means of a hydraulic cylinder 34 supported on the coupling plate 14.
  • the pressing stroke is carried out by the upper punch 17 against the lower punch 18 fixed in the present example by lowering the cross part 4 by means of the tie rods.
  • the holding plate 28 slides with the guide sleeves 29 on the rods 27.
  • the lifting cylinder 12 also serves to move the die 19 downward during the pressing process (and later for pulling the die off the finished molding).
  • the rods 24 slide in the lower punch receptacle 21 and in turn the rods 27 in the guide sleeves 29, provided that the upper punch 17 does not move.
  • the dome 36 can be moved without movement by its hydraulic cylinder 34 at the same time as the die 19, but also, independently of it, by the hydraulic cylinder 34.
  • Materials to be processed are in particular powdery starting materials for sintered materials, such as sintered iron, hard metal, oxide, carbide and silicate ceramics, but also for example Plastics.
  • the electric motor 10 for example a stepper motor, is controlled by a control device 37, which has an adjustable process control.
  • Fig. 3 shows a first stroke-time curve possible with the new drive on an eccentric press.
  • the rotation is accelerated in a first section 41, in a second section 42 delayed, etc.
  • Bottom dead center 43 is reached later.
  • the curve sections to bottom dead center 43 are straight.
  • the eccentric pivots with an otherwise uniform movement at an angle of 180 ° there and back.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
EP02015334A 2001-08-02 2002-07-10 Presse et procédé pour actionner une presse Withdrawn EP1281508A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001138664 DE10138664A1 (de) 2001-08-02 2001-08-02 Presse und Verfahren zum Betreiben der Presse
DE10138664 2001-08-02

Publications (2)

Publication Number Publication Date
EP1281508A2 true EP1281508A2 (fr) 2003-02-05
EP1281508A3 EP1281508A3 (fr) 2003-03-19

Family

ID=7694614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02015334A Withdrawn EP1281508A3 (fr) 2001-08-02 2002-07-10 Presse et procédé pour actionner une presse

Country Status (2)

Country Link
EP (1) EP1281508A3 (fr)
DE (1) DE10138664A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007091118A1 (fr) * 2006-02-06 2007-08-16 Abb Research Ltd Systeme d'entrainement de presse mecanique et procede
NL2000449C2 (nl) * 2007-01-22 2008-07-23 Fico Bv Werkwijze en inrichting voor het in een pers mechanisch bewerken van halfgeleider producten.
US7805973B2 (en) 2006-02-06 2010-10-05 Abb Research Ltd. Mechanical press drive system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0302936A1 (fr) * 1986-12-29 1989-02-15 ISHII, Mitoshi Servocommande pour une presse
DE4114880A1 (de) * 1990-05-09 1991-11-14 Komage Gellner & Co Maschinenf Presse zum verpressen pulverfoermiger massen
DE4421527A1 (de) * 1994-06-20 1995-12-21 Langenstein & Schemann Gmbh Kurbelantrieb einer Kurbelpresse großer Preßkraft
US5566373A (en) * 1992-03-25 1996-10-15 Komage Gellner Maschinenfabrik Gmbh Press apparatus
US5588344A (en) * 1994-06-13 1996-12-31 Murata Machinery, Ltd. Electric servo motor punch press ram drive
US6041699A (en) * 1995-12-15 2000-03-28 Amada Mfg America Inc. Ram driving device and press machine using same
EP1086802A2 (fr) * 1999-09-24 2001-03-28 SMS Demag AG Presse avec entraínement à vilebrequin pour le poinçon supérieur et son procédé de fonctionnement

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0302936A1 (fr) * 1986-12-29 1989-02-15 ISHII, Mitoshi Servocommande pour une presse
DE4114880A1 (de) * 1990-05-09 1991-11-14 Komage Gellner & Co Maschinenf Presse zum verpressen pulverfoermiger massen
US5566373A (en) * 1992-03-25 1996-10-15 Komage Gellner Maschinenfabrik Gmbh Press apparatus
US5588344A (en) * 1994-06-13 1996-12-31 Murata Machinery, Ltd. Electric servo motor punch press ram drive
DE4421527A1 (de) * 1994-06-20 1995-12-21 Langenstein & Schemann Gmbh Kurbelantrieb einer Kurbelpresse großer Preßkraft
US6041699A (en) * 1995-12-15 2000-03-28 Amada Mfg America Inc. Ram driving device and press machine using same
EP1086802A2 (fr) * 1999-09-24 2001-03-28 SMS Demag AG Presse avec entraínement à vilebrequin pour le poinçon supérieur et son procédé de fonctionnement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007091118A1 (fr) * 2006-02-06 2007-08-16 Abb Research Ltd Systeme d'entrainement de presse mecanique et procede
US7805973B2 (en) 2006-02-06 2010-10-05 Abb Research Ltd. Mechanical press drive system
US8302452B2 (en) 2006-02-06 2012-11-06 Abb Research Ltd. Mechanical press drive system and method
NL2000449C2 (nl) * 2007-01-22 2008-07-23 Fico Bv Werkwijze en inrichting voor het in een pers mechanisch bewerken van halfgeleider producten.

Also Published As

Publication number Publication date
EP1281508A3 (fr) 2003-03-19
DE10138664A1 (de) 2003-02-20

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