(19)
(11) EP 0 284 114 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.05.1990 Bulletin 1990/21

(43) Date of publication A2:
28.09.1988 Bulletin 1988/39

(21) Application number: 88200232.2

(22) Date of filing: 09.02.1988
(51) International Patent Classification (IPC)4: B21J 13/14, B21K 1/60
(84) Designated Contracting States:
DE ES FR GB IT

(30) Priority: 26.02.1987 IT 2095787 U

(71) Applicant: Garlaschi, Eufemia
I-20123 Milano (IT)

(72) Inventor:
  • Garlaschi, Eufemia
    I-20123 Milano (IT)

(74) Representative: De Carli, Erberto et al
ING. BARZANO & ZANARDO MILANO S.p.A. Via Borgonuovo, 10
20121 Milano
20121 Milano (IT)


(56) References cited: : 
   
       


    (54) Improved extraction device associated with the extrusion pin in a machine for the production of wholly tubular rivets


    (57) An extraction device associated with the extrusion pin (11) in a machine for the production of wholly tubular rivets (10), wherein the extrusion pin (11) is driven to transla­te inside the frame of the machine inside a bore (30) pro­vided in a die (12), by an inner rod (19) lined-up with the extrusion pin (11) and driven by a first lever (21), where the inner rod (19) is coaxially located so as to slide inside a tubular rod (22), operatively driven in correspondence of the die (12) by a second lever (23), wherein in front of the tubular rod (22) an extraction sleeve (27) is located, which is provided with an inner, coaxial bore, so as to be able to receive the extrusion pin (11), and has an outer size equivalent to that of the bore (30) provided in the die (12).







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