Package making – Methods – Enclosing contents within progressively formed web means
Reexamination Certificate
1999-06-04
2001-11-13
Sipos, John (Department: 3721)
Package making
Methods
Enclosing contents within progressively formed web means
C053S502000, C053S551000
Reexamination Certificate
active
06314706
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a bag-making, filling and packaging apparatus with a weighing unit (device) by which a bag made of a film sheet or the like is filled with goods such as potato chips by every given weight in a backyard of a supermarket, etc.
2. Description of the Related Art
As well known, an improvement in citizen's life has been supported by a remarkable development of technology, and for example, the life of food, clothing and shelter is remarkably largely caused by the merits supported by the excellent quality of the respective goods and the circulation which is quantitatively stabilized
For example, when selling or purchasing the goods of foods such as potato chips in the transaction of the goods on the market for the circulated goods, it is greatly important that the weight and capacity of the goods are uniformly and standardizedly determined to one given value for transaction from the viewpoint of standardizing the circulation. Accordingly, there is a demand in which the goods are assorted or the weight and capacity of the goods are measured in the backyard of the supermarket on the market for the circulated goods.
For example, when the goods are filled and packaged in a bag made of a film sheet or the like in the backyard of the supermarket, a technique by which the bag is made with the film sheet, filled with the goods and packaged, has been put to practical use and widely employed.
In a general and practical manner, there is such an explanation that the goods such as the potato chips which have been weighed to a predetermined weight are filled and packaged in the bag of the pillow type or the like. The outline of this general mode is briefly described with reference to
FIGS. 6
,
7
A and
7
B a vertical type of bag-making, filling and packaging apparatus
1
, a film sheet
3
made of a polyethylene sheet or the like wound around a bobbin
2
is formed as a cylindrical bag-making film sheet
3
′ on the outer side of a chute pipe
7
provided through a former
6
while being drawn through guide rollers
4
, dancer rollers
5
and the former
6
. Both sides of the film sheet
3
′ formed in a cylinder is thermally sealed by a vertical heat sealer
8
and the portion protruded from the lower end thereof is sealed by a lateral heat sealer to make a bottom portion Ill of the cylindrical film sheet
3
′. The cylindrical film sheet
3
′ is drawn down at the outer side of the chute pipe
7
at a predetermined timing by a draw-down unit
9
disposed at the side of the vertical heat sealer
8
. The goods such as potato chips of a predetermined weight which has been weighed by a weighing unit
10
connected with the chute pipe
7
in a predetermined manner are put in the cylinder
3
′ from the upper opening of the chute pipe
7
. A bag filled with the goods and closed at the portion of
112
, at which a subsequent bottom portion is formed simultaneously, which is obtained by cutting piece by piece at the portion
112
through a cutter built in a lateral heat sealer not shown and then transported through a conveyor not shown to a packaging machine or the like downstream.
There can be connected with an auger filler
10
′ as a capacity measuring unit shown in
FIG. 7A
or a volume measuring unit
10
″ shown in
FIG. 7B
instead of the weighing unit
10
.
In the above conventional vertical type of bag-making, filling and packaging apparatus, when the bag of the pillow type in which the goods are filled is made, since the height of the apparatus becomes tall when the vertical type of bag-making, filling and packaging apparatus
1
is used, and the weighing unit
10
is also connected thereto, the height of a space where the apparatus is accommodated needs to be increased in the backyard of the supermarket or the like. This leads to such a drawback that the apparatus cannot be located in the space where the ceiling is low or at a place where the space is small, and also to such difficulty that the weighing unit is considerably expensive, and the designing freedom of combination of the vertical type of bag-making, filling and packaging apparatus
1
and the weighing units
10
,
10
′ or
10
″ is low to make it very hard to design the apparatus location.
The above problem is caused not only by a case in which the weighing unit
10
is directly mounted on the chute pipe
7
, etc. but also by a case when the auger filler
10
′ shown in
FIG. 7A
is used, in which a problem is caused by a fluctuation of the weight due to a variation in the apparent specific gravity of the goods because the auger filler
10
′ is a measuring unit that naturally measures the capacity, resulting in an inconvenience when a predetermined weight is indicated on the surface of the bag which has been filled with the goods.
Similarly, in the volume measuring unit
10
″ shown in
FIG. 7B
, the weight fluctuates due to a variation in the apparent specific gravity of the goods as in the above auger filler, resulting in inconvenience when a predetermined weight is indicated on the surface of the bag which has been filled with the goods.
To cope with these drawbacks, there are such modes that the weight of the goods packed in the bag is checked per every bag, and the weight is arithmetically operated to measure the capacity, or the weight is fed back to the auger filler
10
′ to change the supplied amount of the goods. However, these modes need to have the structure of the device remarkably complicated, resulting in a drawback that the costs increase.
SUMMARY OF THE INVENTION
The present invention has been made to solve the above technical problems with various correlations of the packaging, measuring and filling of the goods while keeping the advantages of the above conventional system in which the film sheet drawn out from a bobbin is made into a bag through the former, and the goods are measured, filled and packaged in the bag. Therefore, an object of the present invention is to provide an excellent vertical type of bag-making, filling and packaging apparatus and a method directly used for the apparatus which are advantageous to an applied field of a measuring a weight, filling and packaging technique in a circulation industry in which bag-making using the film sheet and the measuring of the goods are carried out in a consecutive process simultaneously so that the apparatus is simplified, the structure of it is made compact, the treatment is excellent and the maintenance, inspection and servicing etc. are readily carried out.
In order to achieve the above object, according to a first aspect of the present invention, there is provided a vertical type of bag-making, filling and packaging apparatus in which a film sheet is supplied from a bobbin to a former and then made into a cylinder with a bottom, and while weighed goods are put in the bag, wherein the apparatus comprises a frame, the former to form a body portion (cylinder) of a bag, a chute pipe which is provided in support members so as to pierce coaxially with the former and be elongated downward, a vertical heat sealer which joins the both sides of the film sheet extending downward and surrounding the chute pipe and makes it cylinder, a vacuum device which draws the cylinder downward intermittently by a stroke corresponding to one bag depth, a lateral heat sealer which seals the lower end of the cylinder drawn down and protruded from the lower end of the chute pipe to form a bottom of a cylinder, a weighing unit being disposed with a controller (circuit) which weighs the goods to be put in the bag and puts the goods into an upper opening of the chute pipe and load cells which are fixed on the frame, receives the weights of the goods, the cylinder (film sheet) hanging on the former, the former with the chute pipe and support members of the chute pipe and transmits an electric signal of that total weight to the controller to control the weight of the goods to be put in the cylinder to a predetermined value, where
Araki Shigeru
Takegawa Hirotsugu
Oliff & Berridg,e PLC
Sipos John
Technica Co., Ltd.
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