Deadlock strap releasing device for a strapping machine

Details Deadlock strap releasing device for a strapping machine Deadlock strap releasing device for a strapping machine

2002-12-27

2004-06-08

Ostrager, Allen (Department: 3725)

Presses

Binding

Binder applying

C100S004000, C053S589000

Reexamination Certificate

active

06745678

ABSTRACT:

BACKGROUND OF THE INVENTION
This invention relates to a deadlocked strap releasing device for a strapping machine, particularly to one swiftly releasing a deadlocked strap when the strap is deadlocked in the machine.
A conventional strapping machine
10
shown in
FIGS. 1 and 2
has an automatic strap guiding device guiding a strap
11
from a strap moving device
12
into a guider
13
and then into a guide rail
15
positioned around an upper arcuate frame
14
. Meanwhile an open guide groove
151
is provided in one side of the guide rail
15
to guide one end of the strap
11
to move into a weld and cut device
16
, with the extended long strap formed to have an upper portion and a lower portion overlapped. Then the guide rail
15
is operated to move to one side to let the strap
11
separate from the guide groove
151
so that the band moving device may retreat the strap
11
for tightening the strap
11
to move toward the arcuate frame
14
to pack on the object W to be packed placed on a work table
17
. And then the strap
11
is welded and cut off to finish packing.
By the way, the strap
11
may sometimes be deadlocked in the guide groove
151
during moving action of the strap
11
, impossible to carry on packing. Then the packing machine has to be stopped in operation to move the guide rail
15
to let the strap
11
separate from the guide groove
151
. Next, a worker has to pull the strap
11
out of an open in
171
formed in the worktable
17
, and the packing machine is started again and redundant portion of the strap
11
is to be cut off, releasing the deadlocked strap.
Though the worker can pull the strap
11
out of the opening
171
of the worktable
17
, the opening
171
is so small as to hardly let a finger to pass through, so practically it is not so easy to extend a finger into the opening
171
to pull up the deadlocked strap
11
. The worker may use a hook to hook out the strap
11
to release the deadlocked strap, but the chance may be that a proper hook is not available at hand or it is to be prepared in advance for use, otherwise the deadlocked strap is not easily released in the conventional packing machine.
SUMMARY OF THE INVENTION
This invention has been devised to offer a deadlocked strap releasing device for a strapping machine, which is positioned in the machine body, uses a pull rod to directly push a strap pusher together with the strap to protrude up a worktable so as to permit a worker to pull out the strap to release it in the deadlocked position and to carry on packing smoothly.


REFERENCES:
patent: 3536430 (1970-10-01), Yasumori
patent: 5287802 (1994-02-01), Pearson
patent: 5746882 (1998-05-01), Bell et al.
patent: 6082254 (2000-07-01), De Vlaam

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