Working apparatus and method for band blade

Details Working apparatus and method for band blade Working apparatus and method for band blade

2001-02-26

2002-12-03

Payer, Hwei-Slu (Department: 3724)

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

With cutting

C072S307000, C030S258000, C030S349000, C083S917000

Reexamination Certificate

active

06487887

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a working apparatus and a working method for band blade.
2. Description of the Related Art
Conventionally, in a working apparatus for a band blade
1
, a press progressive die
15
for cutting and notching the band blade
1
is disposed in front of a bender
11
, as shown in
FIG. 20
, or the press progressive die
15
is disposed in front of the bender
11
and a terminal-cutting die
19
is disposed behind the bender
11
as shown in FIG.
21
.
The band blade
1
is used for a trimming die for cutting plural products of predetermined configurations by shearing out of single or plural sheets, or coiled material. The band blade
1
is also called Thomson blade. And, the products in the predetermined configurations include extended cigarette boxes, caramel boxes, cardboard boxes, pieces of jigsaw puzzels, etc.
Generally used size (thickness) of the band blade
1
is about 0.7 mm. For this condition, in bending by the bender
11
after the cutting of the band blade
1
, when the band blade
1
goes through the press progressive die
15
, a guide
13
, and the bender
11
having narrow gaps (slits), only little amount of scrap, dust, and flush generated by the cutting of the band blade causes jam, malprogression, and mechanical halt. It is necessary to disassemble the press progressive die
15
and the bender
11
to recover the working, and this frequently generates a loss of production time.
And, in case that the terminal-cutting die
19
is a plier-shaped cutter
46
composed of two pieces having one blade respectively, one of the blades may slide in a direction of an arrow P and the band blade
1
may be bent in a direction of an arrow Q in cutting the band blade
1
. For this reason, the plier-shaped cutter
46
has to be made strong as to have a large supporting point
47
and blade width R. In case that the terminal-cutting die
19
disposed behind the bender
11
is the plier-shaped cutter
46
as described above, an end portion C of the band blade
1
as a finished product (refer to
FIG. 7
) becomes long because the terminal-cutting die
19
is a large device (having large blade width R).
It is therefore an object of the present invention to provide a working apparatus and method for band blade with which the conventional problems above are solved.


REFERENCES:
patent: 1276256 (1918-08-01), O'Reardon
patent: 1812350 (1931-06-01), Lingwood
patent: 3159913 (1964-12-01), Winton
patent: 4033388 (1977-07-01), Ruegger
patent: 5271256 (1993-12-01), Hedrick et al.
patent: 5463890 (1995-11-01), Tachibana
patent: 5771725 (1998-06-01), Mizukawa
patent: 6158264 (2000-12-01), Mizukawa

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