Global Patent Index - EP 0043393 B1

EP 0043393 B1 19840620 - WIRE KNOTTING MACHINE

Title (en)

WIRE KNOTTING MACHINE

Publication

EP 0043393 B1 19840620 (EN)

Application

EP 80302198 A 19800630

Priority

EP 80302198 A 19800630

Abstract (en)

[origin: EP0043393A1] A machine which is operable to twist the end portion (4A) of a cross wire (4) around a longitudinal wire (2) disposed at right angles to the cross wire, and then to twist the cross wire end portion (4A) about the standing portion (4B) of the cross wire, to form a <<knot>>, consists of a knotter die (34) rotatable about the axis of the longitudinal wire (2) to form the first twist, and to force the end portion (4A) of the cross wire (4) operatively against an anvil (58) configurated to form the second twist so that both twists are formed in a single operation, although the two twists lie in substantially right angled planes. This substantially doubles the speed at which the knots may be formed in automatic machinery. As optional equipment, other dies (72, 74) may be added for pressing the wire bend formed in the second twist, and the raw end of the cross wire, closely adjacent the longitudinal wire, so that the raw wire ends are shielded. This knot <<finisher>> operation is performed at a station different from that at which the knot is initially formed, so that in an automatic machine, the finishing operation does not reduce the production rate.

IPC 1-7

B21F 15/04; B21F 27/04

IPC 8 full level

B21F 15/04 (2006.01); B21F 27/12 (2006.01)

CPC (source: EP)

B21F 15/04 (2013.01); B21F 27/12 (2013.01)

Citation (examination)

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI LU NL SE

DOCDB simple family (publication)

EP 0043393 A1 19820113; EP 0043393 B1 19840620; AT E8017 T1 19840715; DE 3068300 D1 19840726

DOCDB simple family (application)

EP 80302198 A 19800630; AT 80302198 T 19800630; DE 3068300 T 19800630