EP2719478A1 - Betriebsvorrichtung für Stanzen in Stanzköpfen - Google Patents

Betriebsvorrichtung für Stanzen in Stanzköpfen Download PDF

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Publication number
EP2719478A1
EP2719478A1 EP13170545.1A EP13170545A EP2719478A1 EP 2719478 A1 EP2719478 A1 EP 2719478A1 EP 13170545 A EP13170545 A EP 13170545A EP 2719478 A1 EP2719478 A1 EP 2719478A1
Authority
EP
European Patent Office
Prior art keywords
striker
ram
electric motor
rigid
bar
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
EP13170545.1A
Other languages
English (en)
French (fr)
Other versions
EP2719478B1 (de
Inventor
Sergio Dallan
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.)
Dallan SpA
Original Assignee
Dallan 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 Dallan SpA filed Critical Dallan SpA
Priority to PL13170545T priority Critical patent/PL2719478T3/pl
Publication of EP2719478A1 publication Critical patent/EP2719478A1/de
Application granted granted Critical
Publication of EP2719478B1 publication Critical patent/EP2719478B1/de
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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/002—Drive of the tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/002—Drive of the tools
    • B21D28/005—Adjustment of the punch stroke for compensating wear

Definitions

  • the present invention relates to an operating device for punches in punch heads.
  • Punching machines are known, inserted into metal strip processing lines. They generally comprise punch heads, the tools and punches of which are controlled, in accordance with the predetermined operative cycle, by hydraulic cylinders applied to the head itself, and act on a sheet metal strip to be processed, advancing between the punches and the respective dies.
  • a first punch head comprises a frame, mounted on which there are a die carrier carriage, a punch carrier carriage, and a cylinder with striker for selectively operating one of the punches.
  • the die carrier carriage, the punch carrier carriage and the cylinder are provided with means for moving them along three superposed corresponding beams disposed perpendicular to the advancement axis of the sheet metal strip.
  • This machine presents however the drawback of a large overall size, especially with regard to its vertical movement.
  • Punch operating devices comprising an electric motor, a speed reducer applied to the shaft of the electric motor, a bar eccentically rigid with the output shaft of the speed reducer, at least one link rod pivoted to said bar, a mass connected to the free end of the link rod, and a linear striker rigid with said mass.
  • This device presents however the drawback of requiring large-dimension motors and speed reducers.
  • the link rod has to be completely rotated, while if punching small-thickness metal sheets, the link rod has to be partly rotated, and then returned rearwards.
  • the object of the invention is to provide a punching device for punching machines which enables the punching depth to be regulated in a simple and comfortable manner.
  • the punching device according to the invention is slidable along a transverse beam 4 of a frame 6, the beam being slidable along a beam 8 perpendicular to it and parallel to the longitudinal axis of the frame 6.
  • the device 2 comprises substantially an electric motor (not shown in the drawings) of horizontal axis, coupled to a speed reducer 10, to the shaft 12 of which an eccentric bar 14 is fixed supported by bearings 17.
  • Two counter-rollers 50 are rotoidally connected to said eccentric bar by keys, to dynamically balance the bar.
  • Pivoted to said eccentric bar 14 there is a link rod 18, to the bottom of which a ram 20 is connected.
  • a striker gate 24 is secured to the lower surface of the ram by screws 22, and comprises a seat housing a striker 26 maintained elastically resting against the surface of the ram by a solenoid spring 28.
  • the wedge 30 becomes inserted between the head of the striker 26 and the external surface of the ram, to cause the free end of the striker to move away against the action of the spring 28, to perforate the thickest metal sheets whatever the vertical position of the device relative to the frame. This is achieved without using large-dimension high power motors.
  • the ram 20 is provided with a seat 36 in which the striker 26 is inserted, rotoidally connected to a ring gear 38 engaging a pinion 40 rigid with the shaft of an electric motor 42.
  • the striker stroke can be regulated by activating the motor, with consequent rotation of the ring gear 38 and travel of the striker within the interior of the ram 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP13170545.1A 2012-10-11 2013-06-05 Betriebsvorrichtung für Stanzen in Stanzköpfen Active EP2719478B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13170545T PL2719478T3 (pl) 2012-10-11 2013-06-05 Urządzenie obsługowe do stempli w głowicach wykrojnikowych

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000038A ITVE20120038A1 (it) 2012-10-11 2012-10-11 Dispositivo di punzonatura per macchine punzonatrici.-

Publications (2)

Publication Number Publication Date
EP2719478A1 true EP2719478A1 (de) 2014-04-16
EP2719478B1 EP2719478B1 (de) 2015-09-16

Family

ID=47074828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13170545.1A Active EP2719478B1 (de) 2012-10-11 2013-06-05 Betriebsvorrichtung für Stanzen in Stanzköpfen

Country Status (3)

Country Link
EP (1) EP2719478B1 (de)
IT (1) ITVE20120038A1 (de)
PL (1) PL2719478T3 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2030499A (en) * 1978-09-07 1980-04-10 Mercer Nairne & Co Ltd Improved punch assembly
US4250785A (en) * 1979-06-02 1981-02-17 Yamazaky Iron Works Turret type punch press having a plurality of strikers
EP0104509A2 (de) * 1982-09-27 1984-04-04 RAINER S.r.l. Werkzeugmaschine zur Blechbearbeitung
US5205149A (en) * 1991-09-11 1993-04-27 Amada Mfg. America Inc. Press machine having adjustable striker
WO2003015953A1 (en) * 2001-08-13 2003-02-27 Dallan S.P.A. Punching machine for sheet metal strip

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2030499A (en) * 1978-09-07 1980-04-10 Mercer Nairne & Co Ltd Improved punch assembly
US4250785A (en) * 1979-06-02 1981-02-17 Yamazaky Iron Works Turret type punch press having a plurality of strikers
EP0104509A2 (de) * 1982-09-27 1984-04-04 RAINER S.r.l. Werkzeugmaschine zur Blechbearbeitung
US5205149A (en) * 1991-09-11 1993-04-27 Amada Mfg. America Inc. Press machine having adjustable striker
WO2003015953A1 (en) * 2001-08-13 2003-02-27 Dallan S.P.A. Punching machine for sheet metal strip

Also Published As

Publication number Publication date
ITVE20120038A1 (it) 2014-04-12
PL2719478T3 (pl) 2016-03-31
EP2719478B1 (de) 2015-09-16

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