Device and method for forming a thickened head on the head ends of a metal rod element

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EP 2 446 981 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	18.07.2012 Bulletin 2012/29

(43)	Date of publication A2:
	02.05.2012 Bulletin 2012/18

(21)	Application number: 11186683.6

(22)	Date of filing: 26.10.2011

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International Patent Classification (IPC):

B21F 5/00^(2006.01)
B65D 25/32^(2006.01)

B21F 45/00^(2006.01)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME

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Priority:

26.10.2010 NL 2005580

(71)	Applicant: Polymac B.V.
	6716 AH Ede (NL)

(72)	Inventor:
	van den Brink, Willem 6732 BA HARSKAMP (NL)

(74)	Representative: Nijs, Erik Anton Marie
	Exter Polak & Charlouis B.V. (EP&C) P.O. Box 3241 2280 GE Rijswijk 2280 GE Rijswijk (NL)

(54)	Device and method for forming a thickened head on the head ends of a metal rod element

(57) A device for forming a thickened head (5) on a head end of a metal rod element (2) comprises a clamping device for clamping the metal rod element (2), whilst leaving an end portion having the head end free. The device comprises a deformation body (16) for plastically deforming the end portion of the metal rod element in order to form the thickened head, as well as a drive device for driving the deformation body. The drive device is provided with a drive unit (18) and a transmission element (21) drivably connected to the drive unit. The transmission element is pivotable about a pivot axis (22) and is provided with a cam track (23). The drive device comprises a lever arm (24), which at one end abuts against the cam track (23) of the transmission element and at an opposite end is provided with the deformation body (16). The lever arm (24) is hingeable about a hinge axis (27) running substantially parallel to the pivot axis (22).

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