Global Patent Index - EP 0060355 A1

EP 0060355 A1 19820922 - Apparatus for producing a blank from stock material.

Title (en)

Apparatus for producing a blank from stock material.

Title (de)

Vorrichtung zum Stanzen eines Zuschnittes aus Streifenmaterial.

Title (fr)

Dispositif pour découper une pièce d'une bande.

Publication

EP 0060355 A1 19820922 (EN)

Application

EP 81301101 A 19810317

Priority

EP 81301101 A 19810317

Abstract (en)

The present invention relates to a method and apparatus for producing a smooth edge blank from stock material. A blanking die (52) is carried by the movable die shoe (14) and a closely cooperating blanking punch (50) is secured on the fixed die shoe (16). Spring biessed means (40) is displaceably provided within the blanking die to apply pressure on a sheet of stock (122) located on the punch only over the area to be blanked out from said sheet of stock. A piercing punch (66) may also be provided and extends coaxially through the blanking die and a bore (64) extending through the blanking punch provides a piercing die. The spring biassed means for applying pressure to clamp the stock only over the area to be blanked is a shedder displaceably disposed within the bore of the blanking die. A stripper encircling the blanking punch is provided for removing scrap stock upon completion of the blanking step and a spacer means (106, 108) is disposed to space the blanking die and the stripper apart by a distance exceeding the thickness of the stock.

IPC 1-7

B21D 28/16

IPC 8 full level

B21D 28/16 (2006.01)

CPC (source: EP)

B21D 28/16 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI NL SE

DOCDB simple family (publication)

EP 0060355 A1 19820922; EP 0060355 B1 19850410; EP 0060355 B2 19910306; AT E12594 T1 19850415; DE 3169783 D1 19850515

DOCDB simple family (application)

EP 81301101 A 19810317; AT 81301101 T 19810317; DE 3169783 T 19810317