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1. (US4819473) Press forming sheet metal

Office : United States of America
Application Number: 07124943 Application Date: 04.08.1987
Publication Number: 4819473 Publication Date: 11.04.1989
Grant Number: 4819473 Grant Date: 11.04.1989
Publication Kind : A
Prior PCT appl.: Application Number:AU86000373 ; Publication Number: Click to see the data
IPC:
B21D 5/04
B21D 22/20
B21D 5/01
B21D 13/00
B21D 13/02
B21D 13/10
B21D 25/00
B21D 25/02
B PERFORMING OPERATIONS; TRANSPORTING
21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
D
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING
5
Bending sheet metal along straight lines, e.g. to form simple curves
04
on brakes making use of clamping means on one side of the work
B PERFORMING OPERATIONS; TRANSPORTING
21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
D
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING
22
Shaping without cutting, by stamping, spinning, or deep-drawing
20
Deep-drawing
B PERFORMING OPERATIONS; TRANSPORTING
21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
D
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING
5
Bending sheet metal along straight lines, e.g. to form simple curves
01
between rams and anvils or abutments
B PERFORMING OPERATIONS; TRANSPORTING
21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
D
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING
13
Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
B PERFORMING OPERATIONS; TRANSPORTING
21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
D
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING
13
Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
02
by pressing
B PERFORMING OPERATIONS; TRANSPORTING
21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
D
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING
13
Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
10
into a peculiar profiling shape
B PERFORMING OPERATIONS; TRANSPORTING
21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
D
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING
25
Working sheet metal of limited length by stretching, e.g. for straightening
B PERFORMING OPERATIONS; TRANSPORTING
21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
D
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING
25
Working sheet metal of limited length by stretching, e.g. for straightening
02
by pulling over a die
CPC:
B21D 13/02
B21D 13/10
Applicants: Australian Design Marketing PTY., Ltd.
Inventors: Jansen Matthys B. J.
Agents: Ostrolenk, Faber, Gerb & Soffen
Priority Data: PH385185 12.12.1985 AU
Title: (EN) Press forming sheet metal
Abstract: front page image
(EN)

A method of and apparatus for press forming sheet metal into articles, such as roof cladding element (10), having intersecting fold lines. A strip of metal is advanced through a forming die which has first (20) and second (21) stages and a press forming operation is performed on the metal strip in each stage of the die during each closing stroke of the die. One portion of the metal strip is formed in the second stage (21) of the die during a first time interval of each closing stroke of the die and a further portion of the metal strip is movably clamped in the first stage (20) of the die during the same time interval in order that it may be pulled into said second stage (21) of the die during the first time interval. During a second time interval of each closing stroke the metal strip is immovably clamped in both stages (20 and 21) of the die. The first stage (20) of the die is employed to preform longitudinally extending fold lines such as rib (12) and the second stage (21) employed to form transversely extending fold lines such as flutes (14) and channels (15).


Also published as:
KR1019887000693EP0248845CA1275201AU1987067351DK418087WO/1987/003518