JPS62158641A - Manufacture of bellows-shaped container - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for manufacturing a bellows-shaped storage body, and more specifically, for example, floppy disks, records, etc. for OAi.
The present invention relates to a method for manufacturing a main body of a storage container, particularly a bellows-shaped storage body consisting of a bottom piece and both side pieces, for storing a large number of relatively thin items such as compact discs, stationery, and business cards.

(Prior Art) Generally, this type of bellows-shaped storage body consists of a bottom piece 5b and both side pieces 6b, 6b, as shown in FIG. It has a structure in which a plurality of partition walls 7b, . Three bellows-shaped sheet pieces 4d formed in
4e, 4f, and each sheet piece 4d.

The same number of partition walls 7 as the inner protrusions of bellows 4e and 4f
b.

Next, the bottom edge of the partition wall 7b is welded to the inner protrusion of the bellows of one sheet piece 4e, and both side edges of the partition wall 7b are attached to the other sheet pieces 4d,
Welded to the inner protruding piece of 4f, this work was performed on a large number of partition walls 7.
By carrying out the same procedure for ``b'', . . . , a storage body is manufactured in which the sheet piece 4e is formed as the bottom piece 5b and the sheet pieces 4d and 4f are formed as the side pieces 6b and 6b, as shown in FIG. This is what I was looking for.

(Problems to be Solved by the Invention) (a) However, in the method for manufacturing a storage body as described above, the bottom piece 5b and both side pieces 6b of the storage body.

Since the sheet pieces 4d, 4e, and 4f constituting the sheet 6b are each three separate pieces, it is necessary to create a partition wall as described above in order to integrate these separate sheet pieces 4d, 4e, and 4f. 7b,... are required,
Therefore, these partition walls 7b, . . . are divided into sheet pieces 4a,
The work of welding and attaching the sheets to the sheets 4b, 4c is very complicated, and the work of welding them to the sheets 4a, 4b, 4c is very complicated.
4c must be placed at appropriate positions such as the bottom edge side or both side edge sides of the partition wall 7b during the work, which makes the overall work extremely complicated and makes it impossible to perform the work continuously and smoothly. However, there was a problem in that the work efficiency was significantly reduced.

(b) Furthermore, since the side pieces 6b, 6b constituting the storage body are formed of separate sheet pieces 4d, 4f, the positions of the convex portions of the bellows of these sheet pieces 4d, 4f, that is, the position of the partition wall 7b, The left and right mounting positions do not necessarily match, and there is a risk of misalignment between the left and right sides. Therefore, when welding the partition wall 7b to both sheet pieces 4d and 4f, the work becomes cumbersome. There was a problem.

(c) In any case, in the conventional manufacturing method, the above-mentioned problems arose because each sheet piece was separate.

The present invention was made in order to solve all of the above-mentioned problems, and makes it possible to easily and smoothly carry out the manufacturing work of storage bodies, and moreover, to make it possible to mass-produce products. The purpose is to prevent the displacement of both sides of the storage body and to facilitate the installation of the partition wall.

(Means for Solving the Problems) In order to achieve the above objects, the present invention takes into consideration the fact that the above-mentioned problems arise from the fact that each sheet piece constituting the storage body is a separate piece. The above-mentioned problem is solved by integrating at least two of the sheet pieces, and the means for solving the problem is to combine as many folds as possible in the folded part of the bellows body. Three sheet pieces formed at predetermined intervals in the direction constitute a storage body body consisting of a bottom piece and side pieces, and among the three sheet pieces, a bottom sheet piece constituting the bottom piece and a bottom sheet piece forming the bottom piece. At least two sheet pieces are integrally formed with one side sheet piece constituting the both side pieces through folds formed in a direction perpendicular to the plurality of folds, and then the one side sheet piece is formed through the folds. After thermally cutting one side edge of the bottom sheet piece connected to the side sheet piece into a continuous substantially mountain shape, the one side sheet piece is folded onto one side of the bottom sheet and stacked,
After that, the one side sheet piece is heat welded to the welded edge of the bottom sheet piece, and the other side edge of the bottom sheet piece is heat welded into a continuous substantially mountain shape, and then separated from the bottom sheet piece. Alternatively, the other integrally formed side sheet piece is superimposed on the bottom sheet piece, and then the other side sheet piece is heat welded to the other fused edge of the bottom sheet piece, and then the bellows-shaped folded part and Each sheet piece is folded into a bellows shape through a large number of folds, and both side sheet pieces, which are connected to both sides of the bottom sheet piece through heat-welded parts, are erected with respect to the bottom sheet piece. A manufacturing method for manufacturing a bellows-shaped storage body in which a sheet piece is used as a bottom piece and side sheet pieces are used as both side pieces.

(Function) That is, at least two of the three sheet pieces that constitute the bottom piece and both side pieces of the storage body are integrally formed, and even if one sheet piece is separate, the sheet By superimposing one sheet piece on another sheet piece and thermally welding it, it is integrated with the other two sheet pieces, and these three integrated sheet pieces are folded into a bellows shape, and the sheet pieces on both sides are erected. As a result, the storage body can be manufactured as is, and there is no need for partition walls as in the past (work can be done easily and continuously).

(Example) Hereinafter, embodiments of the present invention will be described according to an example shown in the drawings.

First, as shown in FIG. 1, two groove-shaped folds 2.2 having a predetermined width are formed at equal intervals on the sheet body I made of synthetic resin in the longitudinal direction of the surface of the sheet body I by heat pressing. At the same time, a large number of groove-shaped folds 3, . Then, a state in which three sheet pieces 4a, 4b+4c of the same width are arranged in a row through the longitudinal folds 2, 2, that is, a state in which side sheet pieces 4a, 4c are arranged in a row on both sides of the bottom sheet piece 4b. becomes. This constitutes the storage body 12.

Next, as shown in Figure 2, the two longitudinal folds 2.2
Along one of the fold lines 2, the bottom sheet piece 4b on the inner side of the fold line 2 is folded into the multiple folds 3. in the transverse direction using a welder. It is thermally fused into a mountain shape consisting of a continuous triangular shape with each peak located at the position of... As a result, a large number of triangles are cut out from the continuous portion of the bottom sheet piece 4b with the one side sheet piece 4a.

After that, as shown in FIG. 3, one side sheet piece 4a connected to the bottom sheet piece 4b via the one fold line 2 is folded and overlapped with the bottom sheet piece 4b side, and then as shown in FIG. As shown in FIG.
Heat weld to the side. As a result, the substantially mountain-shaped seal portion 10
Both sheet pieces 4a through.

4d are connected in a row.

Next, the folded one side sheet piece 4a is folded outward with respect to the bottom sheet piece 4b to release the overlapping state, and in this state, the other side sheet piece 4c is folded as shown in FIG. While folding it and stacking it on the bottom sheet piece 4b, the other side sheet piece 4 is folded in the same manner as the one side sheet piece 4a.
When c is thermally welded to the bottom sheet piece 4b as shown in FIG. 6, both sheet pieces 4b and 4c are connected via a substantially mountain-shaped seal portion 10.

After that, the other side sheet piece 4c is folded outward with respect to the bottom sheet piece 4b, and a large number of folds 3 are formed in the transverse direction.
,... simultaneously fold the sheet pieces 4a, 4b, 4c into a bellows shape, and simultaneously fold the sheet pieces 4a, 4 on both sides.
When c is made to stand up against the bottom sheet piece 4b, the bottom piece 5 and both side pieces 6 and 6 of the bellows-shaped storage body are formed as shown in FIG.

In this case, the groove-shaped crease in the transverse direction 3.・
... are formed alternately on both the front and back sides of the sheet body l, so that the fold line 3 on the front side is located at the bottom of the chevron-shaped bellows, and the fold line 3 on the back side is located at the bottom of the chevron-shaped bellows, as shown in FIG. 7(d). When folded through the creases 3 so that the bellows are positioned at the top of the bellows, the folding operation becomes very easy because the folds can be folded inward against the creases 3.

After the bottom piece 5 and both side pieces 6.6 are formed as described above, the housing main body 12 thus formed is placed in the eighth
As shown in the figure, by mounting it in a cover unit 11 that can be opened and closed, a storage body capable of storing, for example, a flo-nobby for office automation equipment can be obtained.

In the storage body manufactured in this way, for example, as shown in FIGS. 8 and 9, the storage object 14 such as the floppy disk is inserted into each of the bellows-shaped recesses of the storage body main body 12. The object 14 will be stored.

In the above embodiment, both the fold lines 2.3 were formed in the shape of a groove, so a favorable advantage was obtained in that the folding operation of each sheet piece could be performed easily.However, the shape of the fold lines 2.3 is by no means limited to the groove shape. For example, it may be a simple linear shape.

Further, in this embodiment, the folds 2, 2 in the longitudinal direction are formed at equal intervals, so that the sheet pieces 4a, 4b, and 4c are formed to have the same width. It is by no means a condition to be formed.

Furthermore, in the above embodiment, there are three sheet pieces 4a and 4b.

One sheet body 1 is formed by integrally forming 4c through two folds 2, 2, but it is not necessarily a condition that all three sheets 1-pieces are integrally formed. , two sheet pieces 4 as shown in FIG.
Only the sheet pieces a and 4b may be connected to each other via the fold line 2, and the other sheet pieces 4c may be formed separately. In short, it is sufficient that the two sheet pieces including at least the bottom sheet piece 4b are integrally formed with the fold line 2 interposed therebetween. In this case, first the bottom sheet pieces 4b are connected as shown in FIG.
The longitudinal edges of the sheet are thermally cut into a continuous approximately mountain shape, and then the separate side sheet pieces 4c are superimposed on the melted bottom sheet piece 4b (as shown in Fig. 3), and the above steps are then carried out. As in the example, the separate side sheet piece 4a is thermally welded to the bottom sheet piece 4b in line with the welded edge 13a of the bottom sheet piece 4b (the state shown in FIG. 4).

In this case, the inner side of the fold line 2 of the bottom sheet piece 4b is thermally cut, the side sheet piece 4a is folded and stacked on the bottom sheet piece 4b side, and this side sheet piece 4a is folded into the separate side sheet piece. It may be thermally welded to the bottom sheet piece 4b side before the bottom sheet piece 4c.

Furthermore, in the above embodiment, the bottom sheet piece 4b is first thermally cut at the side where it is connected to the one side sheet piece 4a, and then the one side sheet piece 4a is folded and stacked on the bottom sheet piece 4b side. Both sheet pieces 4a and 4b are heat welded, and then the bottom sheet piece 4b is thermally cut at the continuous portion with the other side sheet piece 4c, and the other side sheet piece 4c is overlapped in the same manner.
Work such as heat welding is performed, but the procedure of these works is by no means limited to this. For example, first, the inside of the continuous portion of the bottom sheet piece 4b with both side sheet pieces 4a and 4c is heated at the same time. After fusing, both sheet pieces 4a, 4
c on the bottom sheet piece 4b and both side sheet pieces 4a,
4c to the bottom sheet piece 4b at the same time along the heat-fused edges 13a, 13b, respectively.

However, in this case, three sheet pieces 4a, 4b, 4
It is necessary to shift the position of the folded part so that c is not thermally welded in one place.

Further, in this embodiment, one side sheet piece 4a and the bottom sheet piece 4
After thermally welding the side sheet pieces 4a to
Although the folding and overlapping work of c is being carried out, it is not necessarily necessary to bend the one side sheet piece 1-4a outward once, and the other side sheet piece 4C is left in the overlapping state.
may be superimposed on the bottom sheet piece 4b and thermally welded. In this case, it is necessary to shift the position of the folded part.

In short, sea 1 ~ piece = 1. ], The bottom sheet piece 4b is thermally cut along the continuous portion with 4c, and then the sheet pieces 4a and 4c on both sides are folded toward the bottom sheet piece 4b,
It is sufficient if the work is done in the order of overlapping and heat welding,
The above work for the sheet pieces 4a and 4c on both sides is completely different.

It is possible to arbitrarily change whether the processes are performed separately or in parallel.

Furthermore, in the above embodiment, both side sheet pieces 4 are bonded by heat welding.
The seal between the bottom sheet piece 4c and the bottom sheet piece 4b is formed into a substantially triangular shape with a sharp tip, but it does not necessarily have to be formed into such a shape.For example, as shown in FIG. The seal portion may be formed into a substantially trapezoidal shape in accordance with the fold line 3.3 in the transverse direction of the strip. In this case, one chevron-shaped recess, that is, one product storage area, has two parts.
Since the strip includes a fold line of 3°3, each concave portion has a constant width. Therefore, in order to store thick products, it is necessary to form the seal portion into a substantially trapezoidal shape as described above.

Further, the above-mentioned Example 7' 3 The sheet pieces 4a and 4c on both sides and the bottom sheet piece 4 are thermally welded and sealed in a chevron shape.
Although the seal portions 10 and 10 between each other are formed continuously, they do not necessarily need to be formed continuously, and for example, a portion thereof may be cut out.

Furthermore, in this embodiment, fold lines 3, ... in the transverse direction are alternately formed on both the front and back surfaces of the sheet pieces 4a, 4b, 4c, so that each sheet piece 4a+... can be easily bent into a bellows shape, which is preferable. Although the advantages have been obtained, it is not necessarily a condition that the folds 3, . . . are formed alternately on both the front and back surfaces of the sheet pieces 4a+. .

Incidentally, the material of the sheet body 1 is not limited to the synthetic resin of the embodiment, and may be made of paper, for example.

Furthermore, in addition to storing a large number of relatively thin items such as floppy disks, the above-mentioned storage body can also be used as a container for a single item with a fixed volume by not providing a partition wall. be. Further, in the above embodiment, the storage body is constructed without providing a partition wall, but a partition wall may be provided.

(Effects of the Invention) (a) As described above, the present invention provides for integrally forming at least two sheet pieces out of the three sheet pieces constituting the bottom piece and both side pieces of the storage body; Even if the sheet pieces are separate, overlap that sheet piece with other sheet pieces,
It can be integrated with two other sheet pieces by heat welding, and since it is a method of manufacturing a storage body using three sheet pieces integrated in this way, there is no need for partition walls, which were previously required. By folding the above-mentioned integrated sheet pieces into a bellows shape and standing the sheet pieces on both sides, a storage body can be manufactured as is, eliminating the need for the complicated work of welding a large number of partition walls to fit each sheet piece. This has the remarkable effect of making the work considerably easier.

) Furthermore, each sheet piece as described above is thermally cut, folded,
Since the storage body is manufactured by folding into a bellows shape through processes such as overlapping and heat welding, each of the sheet pieces is folded through the above line process,
All work such as heat welding can be performed continuously, and the work can be automated, making mass production of products possible. It's arrived.

(c) Furthermore, after thermally cutting a predetermined position of one sheet piece in advance, another sheet piece is placed on top of the melted sheet piece, and both sheet pieces are thermally welded in alignment with the melted edge of the sheet piece. Therefore, the lower edges of both side pieces of the storage body are extended below the welded parts IO of both sheet pieces, as shown in FIG. This has the advantage that the bottom piece of the body is reinforced, thereby preventing the bottom piece from unintentionally curving to the left and right, and making the bottom of the storage body very stable.

[Brief explanation of drawings]

Figure 1 shows the process of forming a crease, (a) is a plan view, (b) is an enlarged sectional view taken along the line A-A of (a), and (c) is an enlarged sectional view taken along the line B-B of (a). . FIG. 2 is a plan view of the step of thermally cutting the continuous portion between the bottom sheet piece and one side sheet piece. FIG. 3 is a plan view of the process of folding one side sheet piece. FIG. 4 is a plan view of the process of thermally welding the bottom sheet piece and one side sheet piece. FIG. 5 is a plan view of the step of thermally cutting the continuous portion between the bottom sheet piece and the other side sheet piece. FIG. 6 is a schematic plan view of the process of folding the other sheet piece and thermally welding it to one side of the center sheet. Figure 7 shows the process of folding into a bellows shape, (a) is a plan view, (b) is a side view, (c) is a perspective view, (d) is an enlarged end view of the main part, and (e) is (b) is a side view. ) is a sectional view taken along line CC. FIG. 8 is a perspective view of the state in which the cover is attached. FIG. 9 is a sectional view of the main part in a state where the stored items are stored. FIG. 1O is a plan view showing another embodiment of the sheet piece. FIG. 11 shows another embodiment of the storage body, in which (a) is a side view of the main part, and (l) is a plan view of the main part. FIG. 12 is a perspective view showing a conventional method of manufacturing a storage body. FIG. 13 is a perspective view of a conventional storage body.

Claims (1)

[Claims] 1. As many folds as possible as the folded portion of the bellows body 3;
...The bottom piece 5 and the side pieces 6 are formed by three sheet pieces 4a, 4b, and 4c each formed at a predetermined interval in one direction.
, 6, and among the three sheet pieces 4a, 4b, and 4c, a bottom sheet piece 4b forming the bottom piece 5 and one side sheet forming the both side pieces 6, 6. At least two sheet pieces with the piece 4a are integrally formed through folds 2 formed in a direction perpendicular to the plurality of folds 3, and then the one side sheet piece 4a is formed through the folds 2. After thermally cutting one side edge of the bottom sheet piece 4b connected to the bottom sheet piece 4b into a continuous substantially mountain shape, the one side sheet piece 4a is folded and stacked on the bottom sheet piece 4b side,
After that, the one side sheet piece 4a is thermally welded to the welded edge 13a of the bottom sheet piece 4b, and the other side edge of the bottom sheet piece 4b is thermally welded into a continuous substantially mountain shape. The other side sheet piece 4c, which is separate or integral with the piece 4b, is superimposed on the bottom sheet piece 4b, and then the other side sheet piece 4c is thermally welded to the other fused edge 13b of the bottom sheet piece 4b, Thereafter, each of the sheet pieces 4a, 4b, 4c is folded into a bellows shape through a large number of folds 3, which become the bellows-like folded parts, and the sheet pieces 4a, 4b, and 4c are consecutively attached to both sides of the bottom sheet piece 4b via heat-welded parts. The two side sheet pieces 4a and 4c are erected against the bottom sheet piece 4b, and the bottom sheet piece 4b is attached to the bottom sheet piece 5.
A method for manufacturing a bellows-shaped storage body, which comprises manufacturing a storage body in which both side sheet pieces 4a and 4c are used as both side pieces 6 and 6. 2. The method of manufacturing a bellows-shaped storage body according to claim 1, wherein the folds 2 and 3 are formed in the shape of a groove.