JPH07115696B2 - Method and device for opening a package in which sheet-like articles are accumulated - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention accumulates a large number of sheet-like articles (A) such as those folded flat as shown in FIG. The present invention relates to an unsealing method of a package (C) and an apparatus for the same.

[Conventional technology]

For example, as a container for storing liquid beverages such as milk and juice, there is a rectangular tube-shaped container as shown in FIG. When such a container is folded so as not to be bulky, a large number of such containers are stacked and the outside thereof is packaged in one package with the packaging material (B) as shown in FIG. This is opened.

Then, this opening is performed by cutting the packaging material (B) wrapping the article to be packaged with a cutting blade.

[Problems to be solved by the invention]

However, in most cases, the packaging material (B) is packaged in such a state that it can be said that there is no gap between the packaging material (A) and the sheet-like article (A) to be packaged. When the cutting blade is actuated toward (B), there is a drawback that the sheet-like article (A) which is the object to be packaged is damaged.

In such a case, the present invention pays attention to the fact that the package is formed by laminating a large number of sheet-like articles (A) and the outer side thereof is integrated with the packaging material (B), and the packaging form is skillfully utilized. By doing so, the sheet-like article (A) that is the object to be packaged is prevented from being scratched.

[Means for solving problems]

In the unsealing method of the present invention, the wrapping material (B) is slackened by tightening the wrapping material (C) from both sides in the stacking direction of a large number of sheet-shaped materials (A) wrapped with the wrapping material (B), The cutting blade acts on it.

Further, the unsealing device of the present invention comprises a large number of sheet-like articles (A) which are stacked and the outer side of which is packaged with the packaging material (B) into one package (C). A package provided by providing a pair of crimping plates (4) and (4) for pressing from both sides in the stacking direction of A) and tightening the package (C) by the pair of crimping plates (4) and (4). It is provided with a cutting blade that acts toward the slack of the material (B).

[Action]

For example, when a large number of sheet-like articles (A) that are folded into a sheet shape as shown in FIG. 10 are stacked and the outer side thereof is packaged in one package with the packaging material (B), a package as shown in FIG. 6 is obtained. It becomes a thing (C). When this package (C) is tightened from both sides in the stacking direction of a large number of sheet-like articles (A) which are objects to be packaged, that is, from the F ₁ direction in FIGS. 1 and 6,
The length of the package (C) that was L ₀ before compression (FIGS. 1 and 6) depends on the state of accumulation of the sheet-like article (A) to be packaged.
It is shrunk to L ₁ (Figs. 2 and 3), and accordingly, the upper surface (e ') near the end faces (b) and (b') of the package (C) corresponds to (B ₁ ) in Fig. 2. , And the other two surfaces (g ') and (g') have slack in the packaging material (B) as shown in (B ₂ ) of FIG. Voids shown in (d ') of FIGS. 2 and 3 are formed between the sheet-shaped articles (A) and the aggregate. Thus, towards this gap portion (d ') (F), (G 1), can be cut when the action of cutting blade as shown by (G _2), the packaging material in the partial (B) It is possible to open the sheet-like article (A) as the article to be packaged without damaging it. Even if the package (C) is tightened from the F ₂ direction different from the F ₁ direction, the length of L ₂ in FIGS. 1 and 3 varies depending on the stacking state of the sheet-like articles (A) as the objects to be packaged. Absent.

On the other hand, when tightening a package (C) as shown in FIG. 6 from both sides in the stacking direction of a large number of sheet-like articles (A) to be packaged, the package (C ) Is used as a pair of crimping plates (4) and (4) for pressing the two end faces (b) and (b ') from the direction F _{1 in} FIG.
That is, as shown in FIG. 1, a pair of crimping plates (4), (4) toward the two end faces (b), (b ') of the package (C).
To act. Then, as described above, before compression L ₀ (first
(Figure and Figure 6) The length of the existing package (C) was L ₁ (second
(Fig. 3, Fig. 3), and the package (C) accordingly
On the upper surface (e ') near the end faces (b), (b') of the same as shown in (B ₁ ) of FIG. 2 and the other two surfaces (g '),
As shown in (B ₂ ) of FIG. 3, slack is generated in (g ′) of the packaging material (B), and the wrapping material (B) and the assembly of the sheet-like articles (A), which are the objects to be packaged, are connected to each other as shown in FIG. A void portion shown in FIG. 3 (d ') is formed. Then, towards the the gap portion (d ') (F), (G 1), can be cut when the action of cutting blade as shown by (G _2), the packaging material in the partial (B) It is possible to open the sheet-like article (A) as the article to be packaged without damaging it.

〔Example〕

 Embodiments of the present invention will be described with reference to the accompanying drawings.

As the sheet-like article (A), in the embodiment, a case in which a container for storing liquid beverages such as milk and juice is flatly folded into a sheet-like article will be described. The sheet-like article in the present invention is such a thing. The present invention is not limited to this, and may be a simple sheet-like material such as paperboard. Further, as will be described later, it is needless to say that it may be an article having no step (a) in addition to the case having the step (a).

The sheet-like article (A) in the example is once folded as shown in FIG. 10 so as not to be bulky, and a large number of these are laminated so that their backs and bellies overlap front and back, and the outside thereof is as shown in FIG. The packaging material (B) is stored as a whole in 1 and opened when the liquid beverage is filled. In the embodiment, the case of opening such a package (C) will be described. The wrapping material (B) means not only wrapping paper generally used for wrapping, but also synthetic resin film, heat shrinkable film and the like that can be cut by a cutting blade.

In performing this opening, from the both sides in the stacking direction of the large number of sheet-shaped articles (A) wrapped with the packaging material (B), that is, from the F ₁ direction in FIGS. 1 and 6, the package (C) Tighten. Then, the length of the package (C) which was L ₀ before compression (Figs. 1 and 6) was L ₁ (Figs. 2 and 3) depending on the stacking state of the sheet-like articles (A) as the objects to be packaged. ), And accordingly, the upper surface (e ') near the end faces (b) and (b') of the package (C) has a different shape as shown in (B ₁ ) of FIG. As shown by (B ₂ ) in FIG. 3, sagging of the packaging material (B) occurs on each of the two surfaces (g ′) and (g ′), so that an aggregate of sheet-like articles (A) to be packaged is formed. A space is formed between the two, as shown in FIG. 2 and FIG. Therefore, toward the void (d '), the third (F) and the third in FIG.
By operating a cutting blade as shown in (G ₁ ) and (G ₂ ) of the figure, the packaging material (B) can be cut at the portion. Although all the cutting blades (F), (G ₁ ) and (G ₂ ) in the examples are of the so-called rotary type, they are not necessarily limited to this type, and the essential point is the void (d). It may be anything that acts toward ′). FIG. 7 shows the package (C ′) after being cut by the respective cutting blades (F), (G ₁ ) and (G ₂ ). FIG. 7 (f) shows two cutting blades (F) on the upper surface (e ′) of the package (C),
The cutting lines cut in (F), (g ₁ ) and (g ₂ ) in FIG. 7, are two cutting blades (g ′) and (g ′) on two opposing faces (g ′) and (g ′) of the package (C). G _1), (G ₁₎ and _{(G 2), (G 2} )
It is a cutting line cut by. In FIG. 7, in addition to the above cutting lines (f), (g ₁ ) and (g ₂ ), the cutting line (e) reaching from end to end in the longitudinal direction of the upper surface (e ′) of the package (C). ) Is provided separately. When this cutting line (e) is provided, the portion of the packaging material (B) indicated by (b) and (b ') in FIG. 7 has three cutting lines (f), (g ₁ ),
(G ₂ ) can be cut off, and the surface provided with the cutting line (e) can be opened from the cutting line (e) portion, and a sheet-like article (A) which is an object to be packaged after opening.
Can be taken out very easily. In applying the cutting line (e), the sheet-like article (A) has a step shown in (a) of FIGS. 9 and 10, and the sheet-like article (A) is present at the step (a). ) And the packaging material (B), a void portion shown in FIG. 6 (d) is formed, and this void portion (d) continues from one end of the package (C) to the other. Then, the cutting blade (E) may be made to act toward this void (d). This way,
As shown in FIG. 8, the outer portion of the sheet-like article (A) in which the step (a) is formed, that is, the portion indicated by the broken line (e) in FIG. 7 is cut, but the cutting blade (E) Since the blade edge has the void (d), it does not reach the sheet-like article (A) and the article is not scratched. In addition,
The cutting blade (E) also shows a so-called rotary type.

In applying these cutting lines (e), (f), (g ₁ ) and (g ₂ ), the cutting blade is moved with respect to the package (C) or the cutting group is not moved. The package (C) may be moved. In short, the packaging material (B) can be cut by moving the cutting blade and the package (C) relatively.

In the package (C ') shown in FIG. 7, the cutting line (e) is provided on the upper surface (e'), but as shown in FIG. 11, the cutting line (e ') is formed on the upper surface (e'). It is not necessary to provide (e). In this case, the cutting lines (f), (g ₁ ),
The periphery of the package (C ') provided with (g ₂ ) is held by the magazine (1) as shown in FIG. 11, and the cutting lines (f),
Part (b) and (b ') of the packaging material (B) separated from the (g ₁ ) and (g ₂ ) portions are opened as shown in FIG. When a pusher (2) is applied to one opening of the sheet and is operated in the direction of the arrow in the figure, an assembly of sheet-like articles (A) as the articles to be packaged is extruded from the tubular packaging material (B). be able to. Even in the case where the cutting line (e) is not provided on the upper surface (e ') of the package (C') as described above, a large number of sheet-shaped articles (A) to be packaged can be taken out very easily. . When the cutting lines (f), (g ₁ ) and (g ₂ ) are applied, the package (C) is placed on the table shown in (3) of FIG. 2 in the embodiment. Is illustrated. Further, in the embodiment, the case where the cutting blades are actuated simultaneously on both sides of the many sheet-like articles (A) in the stacking direction to cut the packaging material (B) has been described, but it is not necessary to do this at the same time. However, it will be more efficient to cut the packaging material (B) at the same time on both sides in the stacking direction of a large number of sheet-shaped articles (A).

Next, an embodiment of an apparatus for carrying out such an opening method will be described with reference to the accompanying drawings.

A large number of sheet-like articles (A) in the package (C) shown by chain lines in FIGS. 4 and 5 have a back and an abdomen of each sheet-like article (A) between the left side and the right side in both figures. They are accumulated as if they overlap each other. The package (C) is placed on the table (3).

A pair of left and right crimp plates (4), (4) are provided on both left and right sides of the table (3).
(4) can be moved back and forth in the left and right directions in FIGS. 4 and 5.
Both crimping plates (4), (4) are for pressing the two end faces (b), (b ') of the package (C) on the table (3) from the F ₁ direction in FIG. Yes, before compression due to the pressing
The length of the package that was L ₀ (Figs. 1 and 6) was L ₁ (Fig. 2
(FIG. 3 and FIG. 3), and accordingly, a large number of sheet-like articles (A) are packaged in one package in a packaging material (B) (B ₁ ) in FIG. 2 and (B) in FIG. _The slack shown in ₂ ) occurs. In the embodiment, both pressure bonding plates (4), (4)
Are respectively attached to the inner surfaces of the two frames (6) and (6), that is, the portions facing the base (3).

On the other hand, on the side of the base (3) (left side or right side in FIGS. 4 and 5), the cutting blades (F), (G ₁ ) acting toward the slack (B ₁ ) or (B ₂ ). ) Or (G ₂ ) is placed. The cutting blade (F) is for making the cutting line shown in (f) of FIG. 7, and the cutting blades (G ₁ ) and (G ₂ ) are the seventh cutting blades.
This is for making the cutting lines indicated by (g ₁ ) and (g ₂ ) in the figure. Then, in order to apply the cutting lines (f), (g ₁ ) and (g ₂ ) to the packaging material (B) while being placed on the table (3), the upper surface of the package (C) is to be cut. The cutting blade (F) is placed on (e ′) in the vertical direction in FIG. 5, and the cutting blade (G ₁ ) is placed on the side of the two surfaces (g ′) and (g ′).
(G ₂ ) must be moved vertically (up and down in Fig. 4). For that purpose, in the embodiment, the cutting blade (F) is provided on the block (7) which can be moved in the horizontal direction with respect to the frame body (6) arranged on the side of the base (3), and also on the cutting blade (G ₁ ). ，
(G ₂ ) are attached to the blocks (8) that can move vertically with respect to the frame (6) (Figs. 4 and 5).
Figure). The block (7) is screwed to a horizontal screw rod (10) which is rotated by a motor (9), and the horizontal rods arranged on the left and right sides of the screw rod (10) are rotated. Move vertically along the guide rod (11),
The block (8) is screwed to a vertically arranged screw rod (13) which is rotated by a motor (12), and the block (8) is arranged on the left and right sides by the rotation of the screw rod (13). It moves vertically along the vertical guide rods (14) and (14) in FIG. Therefore, the cutting blade (F) attached to the block (7) attaches the (f) portion of the upper surface (e ') of the package (C) on the table (3) to the block (8). 2 cutting blades attached (G ₁ ),
(G ₂ ) is a portion on the extension line of the cutting line (f) of two surfaces (g ′) and (g ′) continuous with the surface (e ′) of the package (C) on the platform (3). Cut (g ₁ ) and (g ₂ ) respectively. Thus, 3 consecutive pieces in one package (C)
One face (e ') at, (g'), (g '), the cutting line in the extension of the cutting line (f) and該切disconnection _{(f) (g 1),} (g 2) is performed. Therefore, the portion of the packaging material (B) indicated by (b) or (b ') in FIG.
It can be separated from the two cutting lines (f), (g ₁ ) and (g ₂ ). It should be noted that, if the above-mentioned device is provided so as to face both left and right sides of the stand (3) as shown in FIGS. 4 and 5, the above-mentioned cutting is performed on both sides of one package (C) as shown in FIG. It is extremely convenient because you can

On the other hand, in the embodiment, as shown by (5) in FIG. 4 and FIG. 5, among the four side surfaces of the package (C), other than the pressing surface by the two pressure bonding plates (4), (4). A pressure plate for pressing the two facing surfaces (g ′) and (g ′) from the F ₂ direction is provided. In this way, one package (C) can be tightened from all sides, so that the slacks (B ₁ ) and (B ₂ ) are surely formed in the package (C), and the package-like sheet-like product is formed. The part (A) can be accurately cut by the cutting blades (F), (G ₁ ) and (G ₂ ) without damaging the part. In the embodiment, both of the pressure bonding plates (5) can be moved back and forth with respect to the base (3). As a concrete means thereof, for example, as shown in FIG. 5, the crimping plate (5) is directly connected to the cylinder (15), and its operation causes the crimping plate (5).
One example is the case of moving along the two guide rods (16) and (16). When the two crimp plates (5) and (5) are made movable in this manner, the table (3) moves up and down and the package (C) or (C ') placed on it.
Not only can the crimping plate (5) be retracted so that it does not get in the way when lifting or lowering, but also accurate positioning on the table (3) according to the size of the package (C). It can be done easily. Further, in the embodiment, 1
Two crimp plates (4) for pressing two adjacent side surfaces (b), (g ') of the four side surfaces of one package (C),
(5) and the other two adjacent side surfaces (b '), (g')
Although the moving distances of the two crimping plates (4) and (5) for pressing are different from each other, in this way, one set of the crimping plates (4) and (5) makes one movement on the table (3). Package (C)
After positioning, another set of crimp plates (4),
With (5), one package (C) can be fastened from four sides, so that the predetermined position of the packaging material (B) can be cut accurately.

In the embodiment, the frame body (6) can be moved laterally of the base (3) in the lateral direction of FIG. With this arrangement, the cutting blades (F), (G ₁ ) and (G ₂ ) move when the platform (3) moves up and down to lift or lower the direction object (C) or (C ') on it. Not only can it be retracted out of the way, but also the platform (3) depending on the size of the packaging (C) or (C ').
Accurate positioning and cutting blade F), (G ₁ ), (G ₂ )
The setting position of can be easily adjusted. In moving the frame body (6), the embodiment uses the cylinder (1
The base (6 ') of the frame (6) is moved horizontally along the two guide rods (18), (18) by 7). When the frame body (6) moves in the left-right direction in FIG. 4, the crimping plate (4) attached to the inner surface also moves in the left-right direction in the figure, and the pair of left and right crimping plates (4), (4) When they come close to each other, the package (C) as shown in FIG.
Tighten from the F ₁ direction.

〔The invention's effect〕

According to the unsealing method of the present invention, it is possible to surely cut and unseal the packaging material wrapping the outside of the object to be packaged without damaging the object to be packaged. Further, by using the unsealing device of the present invention, the unsealing of Work can be performed automatically and efficiently.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings show an embodiment of the present invention, in which FIG.
A plan view showing a state immediately before tightening one package with four crimp plates, and Figs. 2 and 3 show a state after activating two left and right crimp plates of the four crimp plates. Front view and plan view, FIGS. 4 and 5 are front view and plan view of the whole unsealing device according to the present invention, and FIG. 6 is a view showing that a large number of sheet-like articles are accumulated and the outside thereof is wrapped with a wrapping material. FIG. 7 is a perspective view showing a state, FIG. 7 is a perspective view of the package after cutting the predetermined position, and FIG. 8 is a cut of the upper surface of the package when there is a step in the sheet-like article which is the object to be packaged. Fig. 9, Fig. 9 and Fig. 10 are perspective views showing an example of a sheet-like article to be packaged. Fig. 9 shows a state in which this is expanded into a tubular shape, and Fig. 10 shows Fig. 11 and Fig. 12 show the flatly folded state, respectively. In Fig. 11 and Fig. 12, the sheet-like article to be packed is taken out by another method. A perspective view showing a state in which to hold the package in the magazine in order, FIG. 11 a front opening, FIG. 12 shows an after opening. (4), (5) ... Crimping plate, (A) ... Sheet-like article,
(B) …… Packaging material, (B ₁ ), (B ₂ ) …… Slack,
(C), (C ') ...... _{packaging, (F), (G 1} ), (G 2)
…… Cutting blade.

Claims (6)

[Claims] 1. When opening a package (C) in which a large number of sheet-like articles (A) are accumulated and the outside is packaged in one package with a packaging material (B), a large number of sheet-like articles (A) are accumulated. A method for opening a package in which sheet-shaped articles are accumulated, characterized in that the package (C) is tightened from both sides in the direction to give the package material (B) a slack, and a cutting blade is acted toward it. 2. A stack of a large number of sheet-like articles (A), which are a packaged object (C) in which a large number of sheet-like articles (A) are stacked and the outside is packaged in one package with a packaging material (B). Method A packaging material (B) formed by providing a pair of crimp plates (4), (4) for pressing from both sides and tightening a package (C) by the pair of crimp plates (4), (4) A device for opening a package in which sheet-shaped articles are accumulated, which is provided with a cutting blade that acts toward slack. 3. A pressure-bonding plate (5), (5) for pressing two opposing surfaces other than the pressure surface by the pressure-bonding plates (4), (4) out of the four side surfaces of one package (C). An unsealing device for a package in which the sheet-shaped articles (A) according to claim 2 which are provided are accumulated. 4. The sheet-like article according to claim 2, wherein a pair of pressure-bonding plates (4), (4) are provided on the side of the table (3) on which the package (C) is placed. A device for opening a packaged article in which is accumulated. 5. The pressure-bonded plates (5), (5) are packages (C).
A device for opening a package in which the sheet-shaped articles according to claim 3 are provided on a side of a table (3) on which the sheet is placed. 6. Two crimping plates (4) for pressing two adjacent side surfaces out of the four side surfaces of one package (C),
4. An apparatus for opening a package in which sheet-like articles are stacked according to claim 3, wherein the moving distances of (5) and the two crimping plates (4), (5) for pressing the other two side surfaces are made different. .