JPH0610005B2 - Automatic packaging machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to an automatic packaging machine capable of separately and integrally packaging two types of articles to be packaged.

(Prior Art) A conventional automatic packaging machine forms a single packaging film into a tubular shape, and welds the front and rear edges of the packaging film to form a packaging body. I try to store it. Therefore, for example, when two types of products that cannot be brought into direct contact with each other, such as "men" and "mentsuyu no moto", are integrally packaged, after packaging each product with the above automatic packaging machine. However, it is necessary to further package and package each of the packaged products, which requires a lot of labor and time for packaging, the amount of packaging material used increases, and the packaging cost becomes high. there were.

In order to solve such a problem, as shown in FIG. 6, the central part of the package is welded along its longitudinal direction to divide the package into two chambers, the left and right chambers, and the products are placed in the respective chambers. It was considered to store the product, but in this case, the central part of the product is recessed due to welding, so that the product storage volume becomes small.

Therefore, the invention described in Japanese Patent Publication No. 56-18444 has been proposed. This is to apply benzine alcohol to the surface of the packaging film by a pair of felt cores connected to a supply container of benzine alcohol to form two continuous strips treated with alcohol, which are jetted from an air heater. By heating the two continuous strips as a solvent to weld both side edges of the packaging film 1 to the film portion to be polymerized with the two continuous strips to form the first and second packages. Is.

(Problems to be Solved by the Invention) In the above configuration, in order to reliably seal the side edge portions of the first and second packages, benzine alcohol is evenly applied to the surface of the packaging film by the felt core. In addition, it is necessary to form the width of two continuous strips, which are the solvent, to be constant.

However, since the amount of benzine alcohol stored in the supply device increases or decreases, it is actually difficult to supply the benzine alcohol from the supply device to the core in a fixed amount. Since the upper and lower open ends of the package are sealed, when the movement of the packaging film is intermittently stopped, more than necessary amount of benzine alcohol is easily supplied from the core to the packaging film in the stopped state. As the packaging film expands and contracts due to changes and the contact resistance between the packaging film and the core changes, the amount of benzine alcohol applied to the packaging film from the core tends to increase or decrease. It is extremely difficult to make the width constant because the strips become thin or thick.

In addition, there is no means for positively adhering both side edges of the packaging film and the film portion superposed on the packaging film by simply injecting a hot air stream from the air heater to the packaging film. There is a possibility that there will be a gap in the gap, and if any gap is formed, it is naturally impossible to weld with two continuous strips that serve as the solvent.

Therefore, the welding of both side edges of the packaging film and the film portion superposed on the packaging film tends to be uncertain, and it is difficult to reliably seal the side edges of the first and second packages.

The present invention has been made in view of the above conventional problems, and an object thereof is to provide an automatic packaging machine capable of reliably sealing the side edge portions of the first and second packaging bodies.

(Means for Solving the Problem) In order to achieve the above object, the present invention provides a pair of packaged object input hoppers 3 each including a main hopper 3a and a sub hopper 3b adjacent to each other with a slight gap therebetween. A strip-shaped packaging film 7 extending vertically from a roll-shaped film is formed in a tubular shape so as to surround the main hopper 3a, and one side edge 7a and the other side edge 7b thereof form a sub hopper 3b. Forming plates 6 for sandwiching and overlapping each other are provided on the outer peripheral side of the object hopper 3 to be packed, and a pair of welding bars 9 and 9 are opposed to a chute portion 5 integrally extending downward from the main hopper 3a. Are arranged in parallel with each other at a constant interval, and both the welding bars 9 and 9 in a high heat state are brought into contact with the chute portion 5 via both side edge portions 7a and 7b of the packaging film 7 and a film portion which is superposed thereon. To let Thus, the drive device 10 for forming the first packaging body 13 and the second packaging body 14 is provided by welding both side edge portions 7a and 7b of the packaging film 7 to the film portion to be superposed thereon. To be adopted.

(Embodiment) FIG. 4 shows a front portion of an automatic packaging machine according to an embodiment of the present invention, in which a main hopper is provided on a top plate portion 2 which is provided on an upper portion of a machine frame 1 so as to project forward. A pair of object-to-be-packaged input hoppers 3 each including a sub-hopper 3b and a sub-hopper 3b adjacent to each other with a slight gap therebetween are vertically provided.

As shown in FIGS. 1 to 3, the auxiliary hopper 3b is provided on the top plate portion 2.
The chute portion 4 extends downward through the hole, and the chute portion 4 has a flat rectangular cross section.
The chute portion 5 of the main hopper 3a has an oval cross section and is provided so as to extend further downward than the chute portion 4 of the sub hopper 3b, and the internal cross-sectional area thereof is larger than that of the chute portion 4 of the sub hopper 3b. Is also set quite large. Therefore, a relatively large object to be packaged, such as "noodles", is put into the main hopper 3a, and a relatively small object to be packaged, such as "mentsuyu no moto" is put into the sub hopper 3b. .

On the outer peripheral side of the chute portion 5 of the main hopper 3a, as shown in FIGS. 1 and 2, a metal plate is curved in a slightly flat conical shape with an upper recess so that the film 7 is directed upward. Forming plate 6 having an inclined surface 6c for guiding and deforming it in a cylindrical shape as it moves upward
Is provided so as to surround the chute portion 5, and both end portions 6a and 6b of the forming plate 6 are overlapped with each other, and one end portion 6a thereof is inserted between both hoppers 3a and 3b, The other end is located outside the sub hopper 6b. Therefore, the strip-shaped packaging film 7 extended from the roll-shaped film is stretched along the outer peripheral surface 6c of the forming plate 6 via the guide rolls 8 and 8 and then the upper edge 6d of the forming plate 6 is extended. By being folded back over and over, it is formed in a tubular shape so as to surround the chute portion 5 of the main hopper 3a, and its one side edge 7a and the other side edge 7a are formed.
7b and 7b are superimposed on each other with the chute portion 4 of the auxiliary hopper 3b interposed therebetween.

In front of the chute portion 5 of the main hopper 3a, a pair of welding bars 9 and 9 are arranged parallel to each other at opposite sides of the side edges 7a and 7b of the packaging film 7 that surrounds the chute 5 at regular intervals. The two bars 9 and 9 are fixed to a connecting plate 11 between the tips of a pair of horizontally moving rods (driving devices) 10 which are horizontally movable. Therefore, by horizontally driving the horizontal moving rods 10 and 10, the two welding bars 9 and 9 are connected to each other via the connecting plate 11 through the side edges 7a and 7b of the packaging film 7 and the film portion overlapping with the chute. When it is brought into contact with the portion 5, both side edges 7a and 7b of the packaging film 7 are welded 12 and 12 to the film portion superposed on the packaging film 7, as shown in FIG. A first wrapping body 13 substantially corresponding to the outer diameter of the chute portion 5 and a second wrapping body 14 substantially corresponding to the outer diameter of the chute portion 4 are simultaneously formed.

As shown in FIG. 1, the width W of the second package 14 is determined by the overlapping width l of both ends 6a and 6b of the forming plate 6, so that the overlapping width l can be set appropriately. The accommodation volume of the second package 14 can be appropriately adjusted according to the supply amount of the articles to be packaged therein. The interval H between the two welding bars 9, 9 is also changed according to the change of the overlapping width l.

Although not shown, the packaging film 7 is attached to the chute section 5
A well-known pulling-out means for intermittently pulling out a fixed length downward along the above is provided. As an example of the pull-out means, there is a pair of pull-out rollers that are pressed against each other on both sides of the lower part of the chute portion 5 via the packaging film 7, and by intermittently rotating the rollers, the packaging bodies 13, 14 are formed.
The wrapping film 7 can be pulled out downward by a predetermined length in synchronism with the formation of.

Also, although not shown in the figure, a well-known sealing cutting is performed to seal the packaging bodies 13 and 14 just below the chute portion 5 at predetermined intervals in the longitudinal direction and to cut the center of the sealing portion. Means are provided. As an example of the sealing and cutting means, a pair of upper and lower welding bars arranged in the transverse direction of the packages 13 and 14, and a cutter arranged between the two bars,
The cutter and both welding bars have a welding cutting means composed of a receiving plate facing each other with the packages 13 and 14 sandwiched therebetween, and the package 1 is provided by horizontally moving the cutter and both welding bars and the receiving plate.
By sandwiching 3 and 14, the packages 13 and 14 are welded at predetermined intervals in the longitudinal direction by the two welding bars in a high heat state.
15 (see FIG. 5) for sealing, and the center of the sealed portion can be cut in the transverse direction with a cutter.

Next, the packaging means will be described. First, the strip-shaped packaging film 7 extended from the roll film is folded back downward from the inclined surface 6c of the forming plate 6 over the upper edge 6d. As a result, the packaging film 7 becomes the main hopper.
The chute portion 5 of the sub-hopper 3b is formed in a tubular shape so as to surround the chute portion 5 of the sub-hopper 3b.
They are polymerized in such a manner that they are interleaved with each other.

Next, the lower end of the tubular packaging film 7 is sealed (welded 15) by a sealing and cutting means (not shown) provided below the chute portion 5, and the pair of welding bars 9 and 9 are packaged. By abutting on the chute portion 5 via 7,
Both side edge portions 7a and 7b of the packaging film 7 are welded 12 and 12 to the film portion to be superposed thereon to form first and second packaging bodies 13 and 14 as shown in FIG.

Then, when the articles to be packaged are respectively put into the main and sub hoppers 3a and 3b, the articles to be packaged are individually and independently separated into the first and second packages 13 and 14 through the chutes 4 and 5, respectively. Is stored in.

After that, both of the packages 13, 13 are pulled out by a drawing means (not shown).
14 is pulled down by a certain length, and the upper ends of both packaging bodies 13 and 14 are sealed (welded 15) again by the sealing and cutting means, and the center of the sealed portion is cut in the transverse direction. As a result, the two objects to be packaged are separately and integrally packaged.

By repeating the above-described packaging procedure, the articles to be packaged are sequentially and integrally packaged in pairs. Note that the upper ends of the two packages 13 and 14 may not be sealed, but the upper ends may be fastened with a fastener such as a string or a ribbon.

(Effect of the invention) According to the present invention, the welding bar is pressed against both side edges of the packaging film and the film portion superposed on the packaging film to weld them together. Therefore, both side edges of the packaging film and It is possible to apply a band-shaped welding having a constant width corresponding to the welding bar to the film portion to be polymerized, and to sandwich both side edge portions of the packaging film and the film portion to be polymerized with both the welding bar and the chute portion. It is possible to make a close contact between the both side edges of the wrapping film and the film portion that overlaps with the wrapping film so as not to create a gap, and
It is possible to form the first and second packages in which the side edge portions are reliably sealed.

Moreover, according to the present invention, the drive mechanism has almost the same structure as in the conventional automatic wrapping machine only by adding the auxiliary hopper and the constituent members attached to the auxiliary hopper, and therefore the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view of a main part of an automatic packaging machine according to an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of the main part, FIG. 3 is a cross-sectional view of the main part, and FIG. FIG. 5 is a perspective view of a front portion of FIG. 5, FIG. 5 is a perspective view of first and second packaging bodies formed by the same machine, and FIG. 6 is a perspective view of a conventional packaging body. 3 ... Packaging material input hopper, 3a ... Main hopper, 3b ...
… Sub hopper, 6 …… Forming plate, 7 …… Packaging film, 7a, 7b …… Side edges, 9 …… Welding bar, 10 ……
Horizontal movement rod (driving device), 13 ...... first package, 14 ......
Second package.

Claims (1)

[Claims] 1. A pair of object-to-be-packaged loading hoppers, each of which is composed of a main hopper and a sub hopper adjacent to each other with a slight gap therebetween, are vertically provided, and a strip-shaped packaging film extended from a roll-shaped film is provided as the main hopper. Formed in a cylindrical shape so as to surround, the one side edge and the other side edge are provided on the outer peripheral side of the object to be packaged hopper for forming a forming plate that polymerizes in a mutually interposing manner with the sub hopper sandwiched therebetween, A pair of welding bars are arranged parallel to each other at a constant interval so as to face a chute portion integrally extending downward from the main hopper, and both the welding bars in a high heat state are superposed on both side edges of the packaging film and the same. By abutting the chute portion via the film portion, both side edge portions of the packaging film are welded to the film portion to be superposed on the packaging film, and the first packaging body and Automatic packaging machine formed by providing a driving device for forming a second package.