Box sheet bending apparatus

Details Box sheet bending apparatus Box sheet bending apparatus

1998-12-02

2001-05-08

Vo, Peter (Department: 3721)

Manufacturing container or tube from paper; or other manufacturi

Control means energized in response to activator stimulated...

Responsive to work material, the product or means engaging...

C493S177000, C493S183000, C493S436000

Reexamination Certificate

active

06228010

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to the field of box-making machines, Specifically, the present invention provides an apparatus for bending a sending box sheet or a sending box sheet blank along a fold formed at a predetermined position in the box sheet.
2. Description of the Related Art
Conventionally, an apparatus for bending a sending box sheet along a fold formed at a predetermined position in the box sheet comprises a hook, which can hang a tip of the sending box sheet, and a sensor which can detect said tip of the sending box sheet. Accordingly, said sensor can detect said tip of the sending box sheet, and said hook can bend the sending box sheet along a first fold by holding a tip of the sending box sheet.
Namely, as shown in FIG.
8
(
a
), in a typical device for bending a sending box sheet along a fold, a hook
5
is provided. The hook
5
is pressed by a spring for an opposite direction (left direction of FIG.
8
(
a
)) of a sending direction of a box sheet
1
and can move the sending direction (right direction of
FIG. 8
(
a
)) of the box sheet
1
. A tip
5
a
of the hook
5
is positioned on a sending route of the box sheet. Therefore, when the box sheet
1
is sent, the tip
5
a
of the hook
5
holds the tip
1
a
of the sending box sheet
1
.
When the box sheet is further sent, the hook
5
moves in the sending direction of the sending box sheet
1
. Then, as shown in FIG.
8
(
b
), the box sheet I is bent along a first fold by a force of the spring. The box sheet is further sent, as shown in FIG.
8
(
c
), and because the tip
5
a
of the hook
5
is left of the tip
1
a
of the box sheet
1
, the hook
5
is restored by force of the restitution of the spring, and then the bending box sheet
1
is sent frontwards.
The typical device for bending a sending box sheet along a fold being thus described, it is possible to bend the box sheet automatically during the process of sending the box sheet. However, because the tip of the hook is on a sending route of the box sheet, when the hook is restored, the tip of the hook hits on a face of the sending box sheet, thereby making a noise. In cases where the box sheet is sent at high speed, the noise increases. Furthermore, certain countries regulate the importation of a device which makes noise beyond a prescribed level.
SUMMARY OF THE INVENTION
An objection of the present invention is to overcome the above-described problems and to provide an apparatus for bending a box sheet along a fold formed at a predetermined position in the box sheet comprising: a hook which can hang a tip of the sending box sheet; a sensor which can detect said tip of the sending box sheet; and a lifting means which can lift a part between said tip and a first fold of the sending box sheet; wherein a tip of said hook is positioned above a sending route of the box sheet; and wherein said sensor detects said tip of the sending box sheet, and said lift means can lift said part between the tip and the most fore fold of the sending box sheet up to said position of said hook.
According to the present invention, given that the tip of the hook is positioned above a sending route of the box sheet, when the hook is restored, the tip of the hook does not hit on the face of the sending box sheet, and therefore a noise is not made.


REFERENCES:
patent: 2899872 (1959-08-01), Labombarde
patent: 3285144 (1966-11-01), Frei
patent: 3388641 (1968-06-01), Gobel
patent: 4432745 (1984-02-01), Eldridge
patent: 4539002 (1985-09-01), Zak
patent: 4629445 (1986-12-01), Toriyama
patent: 5232428 (1993-08-01), Jambor
patent: 5876329 (1999-03-01), LeCompte
patent: 1125753 (1962-03-01), None
patent: 1169271 (1964-04-01), None
patent: 1071758 (1967-06-01), None
patent: 2165042 (1986-04-01), None
patent: 3922278 (1939-10-01), None
patent: 52-144918 (1977-11-01), None
patent: 53-120993 (1978-10-01), None
patent: 60-94936 (1985-06-01), None

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