JP2754350B2 - Jigs for folding cardboard boxes with internal partitions - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a cardboard box provided with a cross-shaped or parallel partition by simply bending a single piece of corrugated cardboard having folds or cuts along the folds. In the method of folding, the folding work is easy.
The present invention relates to a jig for folding a corrugated cardboard box with a partition so that the jig can be quickly performed.

[0002]

2. Description of the Related Art The applicant of the present invention has previously developed a technique for folding a box-shaped container integrally formed with a middle partition from a single piece of corrugated cardboard provided with folds and cuts, and has developed a technique for strawberry packs. It has been put to practical use as an individual packing box or a tray for transporting small machine parts.

[0003]

Since the single piece of corrugated cardboard is provided with considerably complicated cuts and folds, some people may not be able to quickly and accurately fold the box. Requires some training. Therefore, an object of the present invention is to fold a single piece of corrugated cardboard provided with folds and cuts, and to fold a corrugated cardboard box integrally provided with an intermediate partition, without any experience of the folding work. Another object of the present invention is to provide a jig for folding up a cardboard box with a middle partition so that even a person can quickly and surely perform the operation.

[0004]

To achieve the above object, a jig for folding a cardboard box with a partition according to the present invention comprises:
In a box folding method, a cardboard box 200 having a cross-shaped or parallel partition can be folded up simply by folding one piece of cardboard 100 along a fold line. It is used for facilitating the folding operation. To illustrate the configuration of the corrugated cardboard 100, the left and right side walls 2, 3, the half bottom surfaces 4, 5 and the vertical Partitions 6 and 7 are successively provided via main folds A and A, folds C and C and folds D and D, respectively, and front and rear side walls 8 and 9 and overlapping horizontal partitions 10 and 11 are provided on the central surface 1.
Are formed in parallel to each other so as to be formed in a cut-and-raised shape, and are provided in parallel so as to straddle between the main folds A, A, and the front and rear side walls 8, 9 and the horizontal partition. 1
A trapezoidal or triangular standing auxiliary piece 13 for assisting standing is provided on each side end of each of 0 and 11 through a main fold A, and the left and right side walls 2 and 3 are folded in a two-ply shape.
The folding fold B is provided, and furthermore, when the cardboard box 200 is folded up, fitting cuts 17 to 20 are provided at respective locations where the side walls, the bottom surface, and the vertical and horizontal partitions 2 to 11 interfere with each other. The folding jig 30 includes a rectangular base 31 on which the central surface 1 of the cardboard 100 can be placed.
Temporary fixing members 32A and 32B for detachably fixing the front and rear edges of the central surface 1 to predetermined positions on the base 31 are attached to the front and rear edges of the base 31, respectively. At the edge, first support shafts 41, 41 provided in parallel with the edge are provided.
In addition, side wall erecting members 40 that push up the left and right side walls 2 and 3 from below are erected on the outside of the base 31 so as to be able to stand up and down, and are juxtaposed close to the first support shaft 41. The second support shafts 43, 43 are provided with partition raising members 50 for raising and raising the front and rear side walls 8, 9 and the horizontal partitions 10, 11 from below, so as to be able to rise and fall freely toward the inside of the base 31 respectively. An interlocking means is provided for pivotally supporting and interlocking the side wall erecting member 40 and the partition erecting member 50 to erect and fall. As the interlocking means, the first and second support shafts 41 and 43
It is preferable that the gears 60 and 61 of the set are axially fitted and placed.
Further, as the temporary fixing members 32A and 32B, members having a shape capable of forming lateral insertion grooves a and b for inserting the edge portions may be used.

[0005]

The folding jig 30 according to the present invention can be used to convert a single cardboard box, for example, a cardboard box 100, into a cardboard box 200.
Of the left and right side walls 2,
3. The operation for erecting the front and rear side walls 8, 9 and the horizontal partitions 10, 11 can be easily and surely performed, and at the same time, the subsequent folding operation can be facilitated. Folding jig 3
The first method is to use the side wall erecting member 40 and the partition erecting member 50 which can be freely erected and laid down on the outside and inside of the base 31, respectively.
Is placed on the base 31. The front and rear edges of the central surface 1 are temporarily fixed by temporary fixing members 32A and 32B provided on both sides of the base 31. In this state, the left and right side walls 2 and 3 of the cardboard 100 are placed on the left and right side wall standing members 40, respectively.
When 0 is rotated upward around the first support shaft 41, the left and right side walls 2 and 3 are pushed by the member 40 and stand upright. At the same time, the partition raising member 50 is also rotated upward by the action of the interlocking means 60, 61, and the front and rear side walls 8, 9 and the horizontal partitions 10, 11 pushed up by the member 50 are also naturally raised (FIG. 6). reference). This state during the folding is firmly fixed by the two members 40 and 50 (see FIG. 7). For this reason, the subsequent operations of bending the half-side bottom surfaces 4 and 5 and engaging the vertical partitions 6 and 7 with the horizontal partitions 10 and 11 in a cross shape to complete the cardboard box 200 (see FIG. 8) Easy and reliable.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings, in which an embodiment of the present invention is applied to a cardboard box with a partition for accommodating four packed strawberries in groups of four. 9 and 10
The top and bottom sides of the cardboard box 200 of this embodiment, which is shown in a perspective view, can be folded up simply by bending only one cardboard 100 shown in FIG. 1 along the fold line.

[0007] Since the rectangular corrugated cardboard 100 has folds and cuts at a plurality of predetermined locations, how to provide them will be described in detail below. The corrugated cardboard 100 has a rectangular area occupying the center in the left-right direction (the same applies in FIG. 1).
The left and right side walls 2 and 3 serving as the left and right side walls of 00 are continuously provided via main folds A, respectively. These left and right side walls 2, 3
A two-fold fold line B is provided for bending the sheet into two sheets to reinforce the side wall and for convenience of printing described later.

At one end of each of the left and right side walls 2 and 3, half bottoms 4 and 5, which are each a half of the bottom of the cardboard box 200, are continuously provided via folds C, respectively. Further, vertical partitions 6 and 7 constituting a cross-shaped middle partition are connected to the side ends of the respective half-side bottom surfaces 4 and 5 via folds D, respectively. When the cardboard box 200 is folded up, the vertical partitions 6 and 7 are in a superposed state as shown in FIG. In addition, cardboard 1
As shown in FIG. 1, the width dimension before and after 00 (up and down in FIG. 1) is the portion between the two-fold fold B and the fold D,
Somewhat narrower than the rest.

Further, front and rear side walls 8 and 9 serving as front and rear side walls of the cardboard box 200, and horizontal partitions 10 and 11 of the cross-shaped middle partitions are formed on the central surface 1 in upright shapes. For this purpose, a plurality of cut-and-raised cuts 12 and cut-and-raised folds E are provided in parallel with each other so as to straddle the two main folds A and A in the arrangement shown in the figure. However, in this embodiment, the cut-and-raised fold E provided in the center of the central surface 1 is actually a cut, not a fold, so that the horizontal partitions 10 and 11 can be easily raised. In addition, perforations K reaching the left and right ends of the corrugated cardboard 100 are provided on both left and right sides of the center cut-and-raised fold (cut) E, so that the cardboard box 200 can be divided into two.

The front and rear side walls 8, 9 and the horizontal partitions 10, 11
On both side ends of each of these, trapezoidal standing auxiliary pieces 13 for assisting the standing are formed on the left and right side walls 2, 3 in a state of being integrally connected via the main fold A. I have. In order to form the erecting auxiliary piece 13, the oblique folds F of a predetermined length extending from both ends of the cut-and-raising fold E at 45 degrees with respect to the main fold A are formed on the left and right side walls 2, 3. L-shaped cuts 14 are provided extending from both ends of the cut-and-raised cut 12 adjacent to the cut-and-raised fold E, respectively. The erecting auxiliary piece 13 is formed so as to be surrounded by these oblique folds F and the L-shaped cuts 14. The diagonal fold F is provided with a half-cut line. Note that the upright support pieces 13 may be formed in a triangular shape.

At both ends of the cut-and-raise cut 12 which is the upper edge a of the front and rear side walls 8, 9, a folded cardboard box 200 is provided.
At the four corners of the upper edge, there are provided locking pieces 15 protruding respectively (see FIG. 9). The locking piece 15 is formed symmetrically over the main fold A in the left-right direction. Also, the front and rear side walls 8, 9
At each end of each of the cut-and-raised folds E, there are formed hollows 16 for helping the front and rear side walls 8 and 9 and the standing-up auxiliary piece 13 to stand. On the other hand, at the front and rear ends of the fold C, there are provided L-shaped notches b into which the locking pieces 15 are inserted, and when the cardboard box 200 is folded up, as shown in FIG. The notch b forms an engagement hole 21 into which the locking piece 15 is inserted.

Further, as shown in FIGS. 5 to 8, the cardboard 100 is folded up into a cardboard box 200, and the left and right side walls 2, 3;
In the respective places where the front and rear side walls 8, 9 and the horizontal partitions 10, 11 interfere with each other, cuts 17 to 20 for fitting are formed in FIG.
Are provided in the arrangement shown in FIG.

Next, the structure of the folding jig 30 according to the present invention will be described with reference to FIGS. The folding jig 30 of this embodiment is made of metal. 31 is a folding jig 30
A rectangular base serving as a main body portion of the cardboard 100 plays a role of mounting the central surface 1 of the cardboard 100. As shown in FIG. 2, the base 31 includes a front frame 31a and a rear frame 31b having an L-shaped cross section, which are arranged side by side at predetermined intervals in front and rear, in the center of each of them, in a rectangular shape. Are integrally connected by the connection frame 31c.

On each of the upper surfaces of the front frame 31a and the rear frame 31b, a strip-shaped temporary fixing member for detachably fixing the front and rear edge portions of the central surface 1 of the cardboard 100 to the base 31. 32A and 32B are respectively attached by screws (not shown). The temporary fixing members 32A, 32B
Has a form in which a wider band is superimposed on a narrow band, and the length is somewhat shorter than the width of the central surface 1. In the above attached state, the temporary fixing members 32A, 32
Between B and the upper surfaces of the front and rear frames 31a and b31b, insertion grooves a and b for inserting the front and rear edge portions of the central surface 1 are formed to face each other. The depth of the insertion groove a is
It is deeper than the insertion groove b.

As shown in FIG. 4, the front and rear frames 31
Two shaft holes 33, 33 are provided in a and 31b at positions slightly outside from both ends of the temporary fixing members 32A and 32B, respectively, so as to be close to each other sideways. Although illustration is omitted,
Bearing plates are attached to the inner surfaces of the front and rear frames 31a and 31b, and the bearing plates are provided with similar shaft holes.

At the left and right edges of the base 31, rectangular plate-like side wall standing members 40 are respectively assembled. This member 40
Is pressed against the lower surfaces of the left and right side walls 2 and 3 of the cardboard 100 placed on the base 31 and pushed up to play a role in assisting the standing thereof. As shown in FIG. 3, a relatively short first end is provided at the front and rear ends on the inner edge side of the side wall erecting member 40.
The support shaft 41 protrudes in the front-rear direction. 42 is the first support shaft 4
The first mounting member is attached to the front and rear ends. Before and after 1
The first support shafts 41, 41 of the set include front and rear frames 31a, 3
Out of the pair of shaft holes 33 provided in each of the shaft holes 1b, the outer shaft holes 33 are loosely fitted. Thus, the left and right side wall standing members 40, 40 can be turned around the first support shaft 41 so as to be able to stand and fall freely around the first support shaft 41, respectively, in a state of protruding to the left and right outer sides of the base 31, respectively.

Of each set of shaft holes 33, the inner shaft hole 33
, The second support shaft 43 is loosely fitted over the front and rear frames 31a and 31b. Numeral 50 denotes a partition-raising member having a triangular plate shape, which is arranged on each of the second support shafts 43 two by two in front and behind, and protrudes inward of the base 31. As shown in FIG. 6, the partition raising member 50 includes the front and rear side walls 8 and 9 of the cardboard 100 placed on the base 31 and the horizontal partition 1.
The portions 0 and 11 are pushed up from below to play a role in helping them to stand up. An attachment member 51 for screwing and fixing the partition erecting member 50 is attached to the second support shaft 43.

As shown in FIG. 3, gears 60 and 61 meshing with each other are fitted on the front ends of the first and second support shafts 41 and 43 on the left side, respectively. Accordingly, when the side wall erecting member 40 is turned around the first support shaft 41 by a person's hand to be erect and fall down, the partition erecting member 50 is also moved to the second support shaft in conjunction with this movement. Stands and falls around 43.
That is, the pair of gears 60 and 61 is
And the partition raising member 50 constitute an interlocking means.

Next, the operation of the above configuration will be described. First, without using the folding jig 30, the cardboard 10 is manually made.
A procedure for folding up the cardboard box 200 from zero will be described.

First, both main folds A, A are once bent downward by holding the left and right outer sides of the central surface 1 of the cardboard 100, and a downward folding habit is formed. Next, when both main folds A, A are bent upward and the left and right side walls 2, 3 are erected so as to face each other (see FIG. 6), the front and rear side walls 8, 9 and the horizontal partitions 10, 11 are changed to the left and right. With the compression between the side walls 2 and 3, both the main folds A are bent downward and the respective oblique folds F are bent upward, so that the front and rear side walls 8, 9 and the horizontal partitions 10, 11 Each is naturally erected along the cut-and-raised fold E. At this time, the erecting assisting piece 13 naturally rises along the diagonal fold line F, so that the erecting is performed smoothly.

Thereafter, although not shown, the left and right side walls 2, 3
Are folded inwardly along the two-fold folds B while the folds C and D are bent outward at right angles (see the right-hand portion in FIG. 7). Each of the mating cuts 17 to 20 provided at locations where the front and rear side walls 8 and 9 and the horizontal partitions 10 and 11 and the left and right side walls 2 and 3, the half-side bottom surfaces 4 and 5 and the vertical partitions 6 and 7 interfere with each other. Bite each other. Thus, as shown in FIG. 9, the cardboard box 200 integrally provided with the cross-shaped partition is folded up without any trouble, and the folded shape is securely fixed.

As shown in FIGS. 9 and 10, locking pieces 15 project from the four corners of the upper edge of the folded cardboard box 200, and the locking pieces 15 are inserted into the four corners of the bottom face. In this state, the engagement hole 21 is provided. Therefore, when a plurality of cardboard boxes 200 are stacked for transportation and handling, mutual displacement of the cardboard boxes 200 is reliably prevented.

Also, during the folding of the cardboard box 200,
The structural strength of the cardboard box 200 is greatly increased by folding the left and right side walls 2 and 3 in a two-ply configuration.
Further, by making the two sheets overlap, as can be understood from FIGS. 1 and 9, only the single-sided printing on the cardboard 100 allows the entire outer peripheral surface of the side wall of the folded cardboard box 200 to be the printing surface. I can do it.

Next, a procedure for folding the cardboard box 200 from the cardboard 100 using the folding jig 30 will be described.

When the folding jig 30 is not used, as shown in FIG. 2, the side wall erecting member 40 and the partition erecting member 50 are used.
Is turned to the horizontal lying position. In this state, the central surface 1 of the cardboard 100 is placed on the base 31 so as to overlap. At this time, if the front edge of the center surface 1 is completely inserted into the insertion groove a of the front temporary fixing member 32A, the center surface 1
The rear edge portion does not interfere with the temporary fixing member 32B on the rear side. Next, the cardboard 100 on the base 31 is moved backward to move the rear edge of the central surface 1 to the rear temporary fixing member 3.
2B is completely inserted into the insertion groove b. In this state, a part of the front edge of the central surface 1 remains in the insertion groove a. Therefore, the center surface 1 is, as shown in FIG.
It is temporarily fixed firmly in a contact state on the top.

In this state, the right and left side wall erecting members 40, 40 are grasped together with the left and right side walls 2, 3 by the right and left hands, and are turned upward in an opposing manner.
3 is standing up by itself. As described above, the partition standing member 50 pivots upwardly in conjunction with the rotation of the side wall standing member 40, so that the front and rear side walls 8, 9 and the horizontal partitions 10, 11 are also formed by this member 50. Due to the push-up operation from the lower side, as shown in FIG.

The role of the folding jig 30 is up to this stage of the folding of the cardboard box 200, which is somewhat difficult to perform as compared with other steps. As is understood from FIG.
2A, 32B and the left and right side wall upright members 40, 40 and the partition upright member 50 cooperate to be firmly fixed. Therefore, the subsequent folding operation can be performed easily and reliably even by a beginner as in the case of manual operation. The folded-up cardboard box 200 can be pulled out of the jig 30 by removing the central surface 1 from the temporary fixing members 32A and 32B by the forward and backward movement operation reverse to the above.

In the above configuration, the object of the present invention can be achieved even if the detailed configuration is appropriately changed in design. For example,
As shown in the figure, a hollow hole for reducing the weight may be appropriately provided in each of the metal components, or a synthetic resin or wood may be used instead of the metal. The shape and size of each component may be arbitrarily determined in accordance with the desired shape and size of the cardboard box 200. Alternatively, when transporting the member 4
In order to prevent 0 and 50 from sticking, a moderation mechanism may be provided which is attached to an operation rod or the like of various devices.

The second and third half bottom surfaces 4 and 5
By providing a plurality of folds for bending the vertical partition, the inside of the cardboard box 200 can be partitioned into four or more sections. Further, the horizontal partitions 10 and 11 may be omitted, and the horizontal partitions 6 and 7 of an arbitrary number of rows may be provided in parallel. Further, as the sheet material used as the material of the inner partition box, sheet materials of various other materials can be used instead of corrugated cardboard.

[0030]

As is apparent from the above description, by using the jig for folding a cardboard box with a partition according to the present invention, the partition can be integrally formed from a single piece of corrugated cardboard with complicated folds and cuts. Work to fold the cardboard boxes at once
Even beginners can do it easily and quickly. In addition, since the external shape is compact, installation and clearing of the work table can be performed very easily.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of the shape of one piece of corrugated cardboard which is a material of a corrugated cardboard box with a partition, which is folded up using the jig for folding of the present invention.

FIG. 2 is a perspective view of a folding jig showing one embodiment of the present invention.

FIG. 3 is a front view showing the same as above in a partially longitudinal section.

FIG. 4 is an operation explanatory view of the above.

FIG. 5 is a perspective view showing a state where the cardboard has been set on the folding jig.

FIG. 6 is a perspective view showing a state where the folding jig is started to be rotated.

FIG. 7 is a perspective view showing a state after the turning operation.

FIG. 8 is a perspective view showing a state in which the cardboard box has been folded up.

FIG. 9 is a perspective view of a folded cardboard box.

FIG. 10 is a perspective view of the back side of the folded cardboard box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 100 Corrugated cardboard 200 Corrugated cardboard box 1 Central surface 2,3 Left and right side walls 4,5 Half bottom surface 6,7 Vertical partition 8,9 Front and rear side walls 10,11 Horizontal partition 12 Cut-out cut 13 Standing-up auxiliary piece 14 L-shaped cut 15 Locking piece DESCRIPTION OF SYMBOLS 16 Boring hole 17-20 Notch for fitting 21 Engagement hole 30 Jig for folding 31 Base 31a Front frame 31b Rear frame 31c Connection frame 32A, 32B Temporary fixing member 33 Shaft hole 40 Side wall standing member 41 First support shaft 42 mounting member 43 second support shaft 50 partition erecting member 51 mounting member 60, 61 gear (interlocking means) a, b insertion groove A main fold B fold for two folds C, D, G fold E fold for fold F oblique Crease K

Claims (3)

(57) [Claims] 1. A cardboard box 200 integrally provided with a cross-shaped or parallel-shaped partition by simply bending one piece of cardboard 100 along a fold line.
It is used for facilitating the folding operation in the box folding method. The configuration of the corrugated cardboard 100 is exemplified as follows. , The half bottom surfaces 4 and 5 and the vertical partitions 6 and 7
A, the folds C, C and the folds D, D are successively provided, and the center surface 1 has front and rear side walls 8, 9 and a superposed horizontal partition 1.
A plurality of cut-and-raised cuts 12 and cut-and-raised folds E for forming the cuts 0 and 11 in the form of cuts and raises, respectively, by forming main folds A and
A is provided in parallel so as to straddle between A. On both side edges of the front and rear side walls 8, 9 and the horizontal partitions 10, 11,
Trapezoidal or triangular upright assisting pieces 13 for helping them to stand up
Are provided continuously via a main fold A, and two folding folds B are provided to bend the left and right side walls 2 and 3 in two layers. Further, when the corrugated cardboard box 200 is folded up, each side wall, bottom, and vertical The horizontal partitions 2 to 11 are provided with fitting cuts 17 to 20 at respective positions where they interfere with each other. The folding jig 30 can place the central surface 1 of the cardboard 100. At the front and rear edges of the base 31, temporary fixing members 32A and 32B for detachably fixing the front and rear edges of the central surface 1 to predetermined positions on the base 31 are attached. At the left and right edge portions of the base 31, a side wall erecting member 40 that pushes up the left and right side walls 2, 3 from below and raises them on first support shafts 41, 41 provided in parallel with the edge portions. Are supported on the first support shaft 41 so as to be able to stand and fall freely on the outside of the base 31 respectively. On the second support shafts 43, 43 juxtaposed adjacent to each other, a partition erecting member 50 for elevating the front and rear side walls 8, 9 and the horizontal partitions 10, 11 from below is set up.
An interlocking means is provided for pivotally supporting the base 31 inwardly so as to be able to lie down, and for interlocking the erection / falling operation of the side wall erecting member 40 and the partition erecting member 50. A jig for folding cardboard boxes with partitions. 2. The apparatus according to claim 1, wherein the interlocking means is a pair of gears 60 and 61 which are fitted on the first and second support shafts 41 and 43, respectively, and mesh with each other. A jig for folding cardboard boxes with partitions. 3. The temporary fixing member 32A, 32B has a shape capable of forming lateral insertion grooves a, b into which the edge portions are inserted. A jig for folding a cardboard box with a partition.