U.S. patent number 3,706,369 [Application Number 05/143,181] was granted by the patent office on 1972-12-19 for inclination correcting device for bags carrying fasteners.
This patent grant is currently assigned to Fuji Photo Film Co., Ltd.. Invention is credited to Hiroshi Ishida, Minoru Mukai.
United States Patent |
3,706,369 |
Ishida , et al. |
December 19, 1972 |
**Please see images for:
( Certificate of Correction ) ** |
INCLINATION CORRECTING DEVICE FOR BAGS CARRYING FASTENERS
Abstract
A plurality of pulleys and rollers are arranged in two groups in
spaced parallel relation with each other. A moving belt is
tensioned around each group of pulleys and rollers respectively and
the bags are carried therebetween. While the bags are moving, the
inclination is corrected since the fastener of each bag engages
with the upper edge of the belts and is hung thereby.
Inventors: |
Ishida; Hiroshi (Kanagawa,
JA), Mukai; Minoru (Kanagawa, JA) |
Assignee: |
Fuji Photo Film Co., Ltd.
(Kanagawa, JA)
|
Family
ID: |
22502945 |
Appl.
No.: |
05/143,181 |
Filed: |
May 13, 1971 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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830030 |
Jun 3, 1969 |
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Current U.S.
Class: |
198/389; 198/607;
198/626.1 |
Current CPC
Class: |
B65G
15/14 (20130101); B65G 47/22 (20130101); B65G
2201/02 (20130101) |
Current International
Class: |
B65G
15/14 (20060101); B65G 15/10 (20060101); B65G
47/22 (20060101); B65g 047/24 () |
Field of
Search: |
;198/165 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Blunk; Evon C.
Assistant Examiner: Watts; Douglas D.
Parent Case Text
This application is a continuation of application 830,030 filed
June 3, 1969, now abandoned.
Claims
What is claimed is:
1. A method of correcting fore or aft inclination of bags having
protrusions extending laterally from each side of the same as they
move serially, and in vertical upright fashion, along a given
longitudinal conveyor path, said method comprising:
feeding said bags between a pair of laterally spaced endless feed
belts carried by a plurality of pulleys arranged in two laterally
spaced groups, in parallel with each other, their axis of rotation
being vertical and one group positioned on each side of the moving
bag with the endless feed belts tensioned around respective groups
of pulleys and inclined upwardly in the feed direction,
spacing the belts laterally to lightly grasp the bags during
feeding for frictional movement with the belt while spacing the
belts less than the thickness of the bag and its protrusions,
positioning the upper edge of said belts at their intake ends below
the level of the lateral protrusions of the approaching bags, and
positioning the discharge ends of the same above the level of the
protrusions of the approaching bags, and
allowing the bags to slip downward between the belts under light
frictional restraint during movement until the protrusions ride on
the upper edges of respective belts to achieve proper, uniform
orientation of the bags with the edges of the belts during
transport.
Description
BACKGROUND OF THE INVENTION
The present invention relates to devices for correcting the
inclination of the bags fed in an automation system, and
particularly to a device for correcting the inclination of the bags
containing powder, liquid, or solid material and closed by a
laterally projecting fastener.
In an automation process, a bag jammed with powders or the like is
fed to a station of the automation system where the bag opening is
heat sealed near the fastener. In such a process, the bag is
required to be positioned in the proper position so that the seal
occurs at the right position of the bag.
In the prior art, inclination of the bag on the conveyor was not
corrected automatically, but manually. Such inclination often
occurs in a heat sealer, fastener closing process, stamping process
and the like which is automated.
SUMMARY OF THE INVENTION
The present invention provides a device which automatically
corrects the inclination of inclined bags in an automation conveyor
line.
The present invention corrects the inclination of the inclined bags
carrying fasteners by utilizing a pair of inclined belts for
hanging the bag onto the conveyor.
BRIEF DESCRIPTION OF THE DRAWING
FIGS. 1A and 1B are plan views showing the rotating portions of the
device in accordance with two embodiments of the present
invention;
FIGS. 2A, 2B, 2C and 2D are side views thereof, wherein A and B
correspond to FIG. 1A, and C and D correspond to FIG. 1B;
FIG. 3 is a perspective view of the embodiment of FIG. 1A seen from
the inlet side thereof; and
FIG. 4 is a side view showing the situation where various
inclinations of the bags with fasteners are corrected at the belt
portion of the devices of FIGS. 1 through 3.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to FIGS. 1B and 2D, a pair of belt pulleys 1,1 and 2,2
are provided for holding a pair of belts 6,6 which are of proper
material and shape. Between the pulleys, tension rollers 3, 4, 5, .
. . 9 are provided with the belts 6,6 for forming a bag guiding
portion. Necessarily, the belts 6,6 are adequately spaced from each
other. The belts 6,6 may be made of rubber, spiral springs, or
plastics, but from the view point of endurance and function or
effect the spiral spring is preferred relatively. The preference
for the spiral spring is because the spiral spring has good tension
and a low friction coefficient. Since the belts hold the bags
therebetween at the portion just below the fastener 10 provided on
the bag and hang the bag at the fastener portion due to its lateral
protuberance, it is required that the bag slips down to the
position where the fastener is brought into engagement with the
upper edge of the hanging belts. Therefore, the bags should slip
freely between the belts but should stop at the fastener portion
due to the tension of the belts. From such viewpoint, the spiral
spring is best suited as the material for the belts. On the other
hand, in the case when rubber forms the belts, although it has
enough tension and can hold the bag, the bag will not easily slip
down the same due to its high friction coefficient. If the both
belts are spaced relatively far in order to make the bag slip
easily, the bag will not stop at the fastener portion with
certainty. Thus, the spring is better fitted for the belts than
rubber in design and in function or effect.
The position of the pulleys and tension rollers is fixed as shown
in FIG. 2 so that the guide-in pulleys 1,1 are at the lowest level,
the tension rollers 3,4,5 . . . are at a higher level in this
order, and the other pulleys 2 are at the highest level. According
to the variation in level of the pulleys and rollers, the bags
which are brought into the roller assembly, are hung by the
fastener portion 10 on the belts 6,6 so that the inclination of the
bag is corrected, as shown in FIG. 4D. The inclination of the belts
and the shape of the center line of the belts may be a straight
line or arcuate curve or any other shape as long as they are able
to correct the inclination of the bag. The shape of the center line
of the belts should be horizontal, at least at its highest portion,
for final correction of the inclination of the bag.
The spacing between the belts may be variably controlled. One
example for controlling the spacing is shown in FIG. 3, wherein
supporting plates 12 are able to be shifted by unscrewing the
controlling screws 13 which bolt the supporting plates 12 to the
fixed plates 11. The level of the belts at the inlet of the device
are set lower than the level of the fastener of the bag. The linear
speed of the belts should be equal to or lower than that of the
feeding and sealing mechanism 8 to which the above-described
inclination correcting device is adapted. That is because, if the
speed of the belts is faster than that of the mechanism to which
the bags are fed, the bags will jam at the discharge end of the
device and may possibly be sealed together.
The embodiments shown in FIGS. 2C and 4B and 4C are constructed so
that the belts of the device are at a lower level than the belts of
the end mechanism. FIG. 4B shows an embodiment of the device
wherein the mechanism to which the device is adapted is a sealing
apparatus for sealing the opening portion of the bag. FIG. 4C shows
an embodiment of the device in accordance with the present
invention wherein the mechanism to which the device is adapted is a
fentening apparatus for closing the opening of the bag at the
fastener of the belts thereof.
In FIGS. 1A, 2A, 2B and 4A the devices shown are directly mounted
or related to the bag treating mechanism and such that the belts 6
are integral with the feed belts of the mechanism as shown at 7 in
FIG. 1A.
Thus the invention and its advantages will be understood from the
foregoing description.
* * * * *