JPH09239870A - Method and apparatus for assembling corrugated fiberboard container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for assembling a plate-shaped corrugated fiberboard container material quickly and a simple apparatus which is used for the method. SOLUTION: A corrugated fiberboard container material 2 is placed on the first jig 11 which erected the first molding member 14, the second molding member 15, and the third molding member 16 on a support plate 12, the second jig 31 is brought down from above the material 2 to push the bottom surface part 2a of the material 2 into a recession surrounded by the first molding member 14 and the second molding member 15. In this way, reinforcing pieces 2c of four corners are raised a little, and then the first side surface parts 2b and the second side surface parts 2d of four sides are raised to assemble the material 2 into a box shape. After that, by rotating an inserted claw 22 attached to the first jig 11, the folding parts 2e of the material 2 are folded inside to make constitution to assemble the container so that the container can be assembled quickly and simply.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated cardboard box assembling method and apparatus for assembling a flat corrugated cardboard box material punched into a predetermined shape and having a fold line formed at a required position in a box shape.

[0002]

2. Description of the Related Art Conventionally, various types of corrugated cardboard boxes have been widely used. As one example, a shallow corrugated cardboard box 1 as shown in FIG. 8 (e) is a component box attached to an electric appliance or the like. Or, it is used as a box for vegetables such as tomatoes. This cardboard box 1 is a cardboard flat plate shown in FIG.
It is made by assembling a flat corrugated cardboard box material 2 which is punched into the shape shown in FIG. 1 and has crease lines such as ruled lines at required places. Here, the cardboard box material 2 shown in FIG.
A rectangular bottom surface portion 2a and a first side surface portion 2 continuously provided on two sides sandwiching the bottom surface portion 2a via fold lines 3a.
b and the crease lines 3 on both ends of the first side face portion 2b, respectively.
b, a second side surface continuously connected to each other through a fold line 33c on two sides different from the two sides on which the first side surface portion 2b of the bottom surface portion 2a is continuously connected. Part 2d,
Two fold lines 3 close to the tip of the second side surface portion 2d
The folded-back portion 2e continuously provided via d, 3e, the claw portion 2f formed at the tip thereof, and the fold line 3c of the bottom surface portion 2a.
And a claw insertion hole 4 formed so that the claw portion 2f can be inserted therein.

Conventionally, the work of assembling the flat corrugated cardboard box material 2 into the corrugated cardboard box 1 has been performed manually by the procedure shown in FIG. That is, a flat cardboard box material 2 shown in FIG.
8c are sequentially erected at right angles using the crease lines 3b to be in the state shown in FIG. 8B, and then the first side surface portions 2b on both sides.
8 in order by using the crease lines 3a to stand up at a right angle.
After the state shown in (c), the second side surface portions 2d on both sides are then set.
Together with the folded-back portion 2e at the tip thereof, the fold line 3c
8D to make a state shown in FIG. 8 (d), and finally, the folded-back portions 2e on both sides are sequentially turned to the fold line 3
The inner side of the second side surface portion 2d and the reinforcing piece 2c positioned inside the second side surface portion 2d are folded by using d and 3e to wrap the reinforcing piece 2c and the claw portion 2f at the tip is inserted into the claw insertion hole 4.
(See FIG. 7), and the cardboard box 1 shown in FIG. 8 (e)
I was assembling to.

[0004]

However, when assembling a cardboard box manually, it takes time to assemble and the productivity is low. Moreover, not only the work burden on the operator is great but also the operator's hand is hurt. There was a problem.

Therefore, there is a demand for automation of the assembling work, but since the assembling involves a plurality of steps as shown in FIGS. 7A to 7E and is complicated, it is difficult to automate the assembly. Moreover, even if each process can be automated, it takes time to complete the assembly, resulting in poor productivity.

It is to be noted that a thermoplastic resin original plate in which only rectangular side surfaces are connected to four sides around a rectangular bottom surface is pushed into a concave portion surrounded by a molding block to obtain 4 Japanese Utility Model Laid-Open No. 1-64405 proposes a device for assembling a box by simultaneously raising two side surface portions at right angles to the bottom surface portion and thermally welding the edges of adjacent side surface portions. Therefore, this mechanism is applied to the cardboard box material 1 shown in FIG.
It may be used to stand up the first and second side portions of the. However, since the corrugated cardboard box material 1 has the reinforcing piece 2c, the reinforcing piece 2c cannot be folded simply by applying the mechanism of Japanese Utility Model Laid-Open No. 1-64405, and therefore, only the reinforcing piece 2c is separately folded. It is necessary to provide a device. Further, the folded-back portion 2e cannot be folded back, and a device therefor is required, which eventually makes the device complicated.

The present invention has been made in view of the above problems, and is a method for promptly assembling a corrugated cardboard box material having the shape shown in FIG. 7 and a simple method for carrying out the method. An object of the present invention is to provide a device having a simple configuration.

[0008]

In order to solve the above problems, the present invention places a plate-shaped cardboard box material on a first jig having a recess surrounded by a molding member, and uses a second jig. First, the four reinforcing pieces are slightly raised to the first side surface portion at substantially the same time, and then the first side surface portion and the second side surface portion are raised to the bottom surface portion almost at the same time. Then, the folded-back portion at the tip of the second side surface portion is bent inward, and is folded over the inner surface of the second side surface portion and the reinforcing piece located inside thereof. With this configuration, by simply pushing the cardboard box material into the first jig with the second jig, the first side surface portion and the second side surface portion are erected at right angles to the bottom surface portion to form a box-like shape. A state in which a reinforcing piece is folded inside the two side surfaces [Fig. 8
The state shown in (d)] can be set, and then the cardboard box can be assembled by simply folding the folded-back portion inward, and the assembly can be performed promptly.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION
The first jig is provided with a first molding member, a second molding member, and a third molding member that guide the first side surface portion, the second side surface portion, and the reinforcing piece of the corrugated board material so as to stand upright. A second jig for pushing the cardboard box material into one jig is provided, and the first molding member, the second molding member, and the third molding member are pushed in by the cardboard box material with the second jig. At this time, first, the third molding member slightly raises the reinforcing piece with respect to the first side surface portion, and then, the first molding member and the second molding member raises the first side surface portion and the second side surface portion, and the corrugated board is formed. When the box material is pushed to a predetermined position, the first side surface portion and the second side surface portion are configured to stand up to a right angle with respect to the bottom surface portion. The second side of the cardboard box material pressed into the box and raised into a box Folding the folded portion of the section tip inside those having a structure of providing a folding means.

In the corrugated board box assembling apparatus configured as described above, the corrugated board material is placed at a predetermined position on the first jig, and the corrugated board material is pushed into the first jig by the second jig. First, the third molding member slightly erects the reinforcing piece with respect to the first side surface portion, and then the first molding member and the second molding member erect the first side surface portion and the second side surface portion. Enters the inside of the second side surface portion, and in that state, the first side surface portion and the second side surface portion are raised at a right angle to form a box shape. Then, when the folding means is operated, the folding means bends the folded-back portion at the tip of the second side surface portion of the box-shaped corrugated cardboard material inward, and the second side surface portion and the reinforcing piece located inside thereof are folded. Can be folded on the inner surface.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described below. FIG. 1 is a schematic perspective view showing main parts of a corrugated board box assembling apparatus according to an embodiment of the present invention, FIG. 2 is a schematic central sectional view of the apparatus as seen in the Y-axis direction, and FIG. 3 is an apparatus as seen in the X-axis direction. It is the schematic center sectional view seen. Reference numeral 11 is a first jig that acts as a lower mold, and is a molding member including a horizontally arranged support plate 12 and a large number of ribs provided upright on the upper surface thereof, that is, a first molding member 14 and a second molding. The member 15 and the third molding member 16 are provided.

Here, the first molding member 14, the second molding member 15, and the third molding member 16 are respectively formed of the corrugated cardboard when the flat cardboard box material 2 is placed at a predetermined position on the first jig 11. The first side surface portion 2b and the second side surface portion 2d of the box material 2
(And the folded-back portion 2e) and the bottom portion 2a of the corrugated cardboard box material 2 which are arranged at positions corresponding to the reinforcing pieces 2c.
Is pushed into the concave portion surrounded by the first molding member 14 and the second molding member 15, the first side surface portion 2b, the second side surface portion 2d (and the folded portion 2e), and the reinforcing piece 2c are respectively erected. It is made in a shape to guide you. Furthermore, the third molding member 16 is formed higher than the first molding member 14 and the second molding member 15, and accordingly, the first jig 11 is formed.
When the flat corrugated cardboard material 2 is placed on the top, the corrugated cardboard material 2 is supported only by the third molding member 16. Therefore, when the bottom surface 2a of the corrugated cardboard material 2 is pushed down, the Only the reinforcing piece 2c at the corner is the first side surface portion 2
It stands up to b. The first molding member 14 and the second molding member 15 are formed to have substantially the same height and the same shape, and when the bottom surface portion 2a of the corrugated board box material 2 is pushed in, the first side surface portion 2b and the second side surface portion 2b. The portion 2d (and the folded-back portion 2e) is erected almost at the same time, and when the bottom surface portion 2a is pressed against the support plate 12, it is erected up to a right angle to the bottom surface portion. Although the molding members 14, 15 and 16 are composed of a plurality of thin ribs in this embodiment, they may be composed of a thick block shape instead. However, it is preferable to use a plurality of ribs as in the embodiment, because there are advantages that the device can be made lighter and the cost can be reduced.

In the first jig 11, the folded-back portion at the tip of the second side surface portion of the corrugated cardboard box material which is pressed into the concave portion surrounded by the first molding member 14 and the second molding member 15 and raised in a box shape. A folding means 20 for bending 2e inward is provided. The folding means 20 in this embodiment includes a rotary shaft 21 rotatably held by the second molding member 15 and the third molding member 16, and a pair of L-shaped folding claws 22 attached to the rotary shaft 21. A rotary actuator 23 that reciprocally rotates the rotary shaft 21 is provided, and the folding portion 2e is bent by the rotation of the pair of folding claws 22. Here, a pair of folding claws 22
It is preferable to arrange them so as to come into contact with the vicinity of both ends of the folded portion 2e as much as possible. With this structure, the folded-back portion 2e can be stably bent along the fold lines 3d and 3e. The pair of folding claws 22 is not limited to being provided in a pair, and may be provided such that only one is provided at the center or three or more are provided.

A second jig 31 acting as an upper mold is arranged above the first jig 11 so as to be moved up and down by an air cylinder 32. The second jig 31 includes the bottom portion 2 a of the corrugated board box material 2 placed on the first jig 11.
Is provided with a flat plate 33 for pushing into the recess surrounded by the first molding member 14 and the second molding member 15. Further, on the upper surface of the flat plate 33, a pair of claw pushing members 34
And an air cylinder 35 for moving the pair of claw pushing members 34 so as to expand or contract. When the second jig 31 pushes the cardboard box material 2 into the first jig 11 to assemble it into a box shape, the claw pushing member 34 faces the center of the second side face portion 2d of the cardboard box material 2. And the folded-back portion 2e folded inward of the second side surface portion 2d is pressed against the second side surface portion 2d from the inside to insert the claw portion 2f at the tip into the claw insertion hole 4. It is a thing. The claw pushing member 34 has a claw shape in which the tip is curved downward and extends to a position substantially equal to the lower surface of the flat plate 33.
The claw portion 2f at the tip of e can be surely pushed and pushed into the claw insertion hole 4.

In FIGS. 2 and 3, reference numerals 40 and 41 denote pads for positioning the corrugated board box material 2 placed on the first jig 11 at a predetermined position.

An assembling method by the cardboard box assembling apparatus having the above structure will be described with reference to FIGS. 4, 5 and 6.
The following operations are sequence-controlled by a sequence controller (not shown), except for supplying the corrugated board box material 2 and discharging the assembled corrugated board box 1.

With the second jig 31 standing by upward, the operator feeds the corrugated board box material 2 onto the first jig 11 and sets it in a predetermined position in accordance with the pads 40 and 41. At this time, the cardboard box material 2 has reinforcing pieces 2c at the four corners.
Are held by the third molding member 16 [FIG.
(See (A) and (a)]. When the corrugated board box material 2 is set at a predetermined position, the second jig 31 starts to descend.

The second jig 31 comes into contact with the bottom surface portion 2 a of the cardboard box material 2 and pushes it down. At this time, 4
Since the reinforcing piece 2c at the corner is prevented from falling by the third molding member 16, it bends at the fold line 3b (see FIG. 7) at the end portion of the first side surface portion 2b that descends together with the bottom surface portion 2a,
Standing up against the first side surface portion 2b [Fig. 4
(See (B) and (b)].

Further, when the second jig 31 continues to descend and pushes down the cardboard box material 2, this time, the first side surface part 2
b and the second side surface portion 2d (and the folded-back portion 2e) hit the first molding member 14 and the second molding member 15 and are raised (see FIGS. 4C and 4C). At this time, the reinforcing piece 2c that has been raised earlier rotates inward as the first side surface portion 2b rises and enters the inside of the second side surface portion 2d. Further, since the first molding member 14 and the second molding member 15 have substantially the same height and the same shape, when the corrugated board box material 2 is pushed in to raise the first side surface portion 2b and the second side surface portion 2d, The reaction force of the force is simultaneously collected toward the center of the corrugated board box material 2, and the corrugated board box material 2 is less likely to be displaced. Therefore, the fold lines 3a and 3c (see FIG. 7) on the four sides of the bottom surface portion 2a can be favorably bent. Depending on the size of the box, the heights of the first molding member 14 and the second molding member 15 may be changed so that the rising timing of the first side surface portion 2b and the rising timing of the second side surface portion 2d are different.

When the second jig 31 is further lowered and the bottom surface portion 2 a of the corrugated board box material 2 is pressed against the support plate 12 of the first jig 11, the second jig 31 stops. At this time, the first side surface portion 2b and the second side surface portion 2d (and the folded-back portion 2e) are respectively the bottom surface portion 2
The cardboard box material 2 is in a state of standing upright at a right angle to a, and the cardboard box material 2 is roughly in the shape of a box [see FIGS. As described above, in this corrugated board box assembling apparatus, the reinforcing piece 2c of the flat board-shaped corrugated board material 2 is erected by one stroke of simply lowering the second jig 31, and the first side surface portion 2b and the second side surface are The part 2d (and its folded-back part 2e) can be erected and roughly assembled in the shape of a box, which speeds up the assembly and simplifies the structure.

Next, the folding means 20 is actuated, the folding claws 22 are rotated, the folding portion 2e that was in the upright state is pushed inward, and folding is performed at the fold line 3d (see FIG. 7) [FIG. ), (A)]. At this time, the folding claw 22 pushes the vicinity of the end portion of the folding back portion 2e, but since the reinforcing piece 2c is provided below the position and supports the second side surface portion 2d, the folding back portion 2e is The reinforcing piece 2c is stably bent at the fold line 3d at the upper end.

After that, the folding claws 22 further rotate, the folding portion 2e is folded at the fold line 3e, and is folded inside the second side surface portion 2d. And
The claw portion 2f at the tip of the folded-back portion 2e comes into contact with the bottom surface portion 2a and stops (see FIGS. 5B and 5B).

Next, the pair of claw pushing members 34 provided on the second jig 31 expands, and the claw portion 2f at the tip of the folded-back portion 2e is pushed into the claw insertion hole 4 provided on the bottom surface portion 2a and inserted [ 5C and 5C]. As a result, the box assembly is completed, the cardboard box 1 is assembled, and then the cardboard box 1 is taken out.

The folding claw 22 returns to its original position [see FIGS. 6 (A) and 6 (a)], and then the second jig 31 returns upward. At this time, since the pair of claw pushing members 34 are in an open state and are pressed against the inner surface of the assembled cardboard box 1, when the second jig 31 is lifted upward, the pair of claw pushing members 34 are pushed. 34 holds the cardboard box 1, lifts it upward, and takes it out above the first jig 11 [see FIGS. 6 (B) and 6 (b)].

After that, the pair of claw pushing members 34 are narrowed to the original state, and the holding of the cardboard box 1 is released. This causes the cardboard box 1 to drop due to its own weight [Fig. 6 (C),
(See (c)], so that it is manually discharged to an appropriate position. As described above, the cardboard box is automatically assembled.

In the above description of the operation, the first setting of the corrugated board box material 2 and the discharging of the corrugated board box 1 are explained manually, but of course, this operation is automated by using an appropriate handling device. You may.

In the corrugated board box assembling apparatus of the above-mentioned embodiment, after the folded back portion 2e is folded inside the box by the folding claw 22, the claw pushing member 34 provided in the second jig 31 pushes the claw portion at the tip. 2f is inserted into the claw insertion hole 4. However, the present invention is not limited to this configuration, the claw pushing member 34 is omitted, and only the folding claw 22 is provided.
The folded-back portion 2e may be bent to the final position. However, in order to push the claw portion 2f into the claw insertion hole 4 provided in the bottom surface portion 2a, it is necessary to move the claw portion 2f while rubbing the bottom surface portion 2a, and the operation is performed only by rotating the folding claw 22. Can be difficult. On the other hand, when the claw pushing member 34 is used to linearly push the claw portion as in the present embodiment, there is an advantage that the claw portion 2f can be stably and surely pushed and inserted into the claw insertion hole 4. To be If the claw pushing member 34 is provided, the structure becomes complicated and an extra operation stroke is required.
The claw pushing member 34 has a function of taking out the assembled cardboard box 1 from the first jig 11, and therefore, it is not necessary to separately provide a box taking-out mechanism and a box taking-out stroke is not necessary. Therefore, as a whole, there is no need to complicate the structure of the device or increase the required operation stroke. Thus, in this embodiment, the structure was simplified, and an inexpensive corrugated board box assembling apparatus capable of high-speed assembly was realized.

[0028]

As described above, the method of the present invention comprises:
First of all, the plate-shaped cardboard box material is made to stand up to the first side surface part at the same time with the four reinforcing pieces slightly at the same time, and then the first side surface part and the second side surface part are raised up to the bottom surface part almost at the same time. By doing so, the first side surface portion and the second side surface portion are erected at right angles to the bottom surface portion with a simple operation stroke to form a box shape, and the reinforcing piece is folded inside the second side surface portion [Fig. 8 (d)], and thereafter, the corrugated board box can be assembled by folding the folded-back portion inward, and an effect that the corrugated board box can be easily and promptly assembled. Have

The apparatus of the present invention comprises a first molding member, a second molding member and a third molding member for guiding the first side surface portion, the second side surface portion and the reinforcing piece of the corrugated board box material to the first jig so as to stand upright. A molding member is provided and the first molding member, the second molding member and the third molding member are pushed by a second jig into the concave portion surrounded by the first molding member and the second molding member for the corrugated box material. At this time, first, the third molding member slightly raises the reinforcing piece with respect to the first side surface portion, and then, the first molding member and the second molding member raises the first side surface portion and the second side surface portion, and the corrugated board is formed. When the box material is pushed to the specified position, the shape is raised until the first side surface and the second side surface are at right angles to the bottom surface, so that the cardboard box material placed on the first jig can be With one stroke of pushing in with the second jig, the first side surface part And the second side surface portion is erected at a right angle to the bottom surface portion to form a box shape, and a reinforcing piece can be folded inside the second side surface portion [a state shown in FIG. 8 (d)], Further, a corrugated cardboard which is raised in a box shape is provided by providing a folding means for bending the folded-back portion at the tip of the second side face portion of the corrugated cardboard box material pushed into the concave portion of the first jig and raised in a box shape. It is possible to assemble the corrugated cardboard box by folding the folded portion inward by the folding means at that position without transferring the box material. Thus, the present invention has an effect that the structure is simplified and an inexpensive corrugated board box assembling apparatus capable of assembling a corrugated board box at high speed can be realized.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing main parts of a corrugated board box assembly apparatus according to an embodiment of the present invention.

2 is a schematic center cross-sectional view of the corrugated board box assembling apparatus shown in FIG. 1 as seen in the Y-axis direction.

3 is a schematic center sectional view of the corrugated board box assembling apparatus shown in FIG. 1 as seen in the X-axis direction.

FIG. 4 shows the operation of the corrugated board box assembling apparatus shown in FIG. 1, and (A), (B), (C), and (D) are schematic central cross-sections in the Y-axis direction showing different operating states. Figure,
(A), (b), (c), (d) are (A),
(B), (C), the schematic center cross-sectional view seen in the X-axis direction corresponding to (D)

5 shows a continuation of the operation of the corrugated board box assembling apparatus shown in FIG. 4, wherein (A), (B), and (C) are schematic central cross-sectional views seen in the Y-axis direction showing different operating states,
(A), (b) and (c) are (A), (B) and
A schematic center cross-sectional view seen in the X-axis direction corresponding to (C)

6 shows a continuation of the operation of the corrugated board box assembling apparatus shown in FIG. 5, wherein (A), (B), and (C) are schematic central cross-sectional views seen in the Y-axis direction showing different operating states,
(A), (b) and (c) are (A), (B) and
A schematic center cross-sectional view seen in the X-axis direction corresponding to (C)

FIG. 7 is a schematic perspective view of a flat cardboard box material before being assembled into a cardboard box.

8 is a schematic perspective view showing an assembling procedure of the cardboard box material shown in FIG.

[Explanation of symbols]

 1 Cardboard Box 2 Cardboard Box Material 2a Bottom Part 2b First Side Part 2c Reinforcing Piece 2d Second Side Part 2e Folded Back Part 2f Claw Part 3a, 3b, 3c, 3d, 3e Fold Line 11 First Jig 12 Support Plate 14th One molding member 15 Second molding member 16 Third molding member 20 Folding means 21 Rotating shaft 22 Folding claw 23 Rotary actuator 31 Second jig 32 Air cylinder 33 Flat plate 34 Claw pushing member 35 Air cylinder

Claims (2)

[Claims] 1. A rectangular bottom surface portion, a first side surface portion continuously provided on two sides sandwiching the bottom surface portion via fold lines, and both ends of the first side surface portion via fold lines. Reinforcing pieces that are continuously provided, and second side portions that are continuously provided on two sides different from the two sides that are provided by connecting the first side surface portion of the bottom surface portion through fold lines, respectively, and second side portions thereof. A method of assembling a flat corrugated cardboard box material having a folded-back portion that is continuously provided at the tip of the corrugated line into a corrugated cardboard box, in which four reinforcing pieces are first almost simultaneously attached to the first side surface portion. A little upright position, and then the first and second side surface parts are raised up to the bottom surface part almost at the same time to form a right angle with respect to the bottom surface part, and then the folded part at the tip of the second side surface part is bent inward. Folding over the inner surface of the second side part and the reinforcing piece located inside it. A method of assembling a corrugated cardboard box. 2. A rectangular bottom surface portion, a first side surface portion continuously provided on two sides sandwiching the bottom surface portion via fold lines, and both ends of the first side surface portion via fold lines. Reinforcing pieces that are continuously provided, and second side portions that are continuously provided on two sides different from the two sides that are provided by connecting the first side surface portion of the bottom surface portion through fold lines, respectively, and second side portions thereof. A device for assembling a flat cardboard box material having a folded-back portion continuously provided at the tip of the flat cardboard box through a fold line, the first side surface portion of the flat cardboard box material, A first jig having a first molding member, a second molding member and a third molding member for guiding the two side surfaces and the reinforcing piece so as to stand upright, and a cardboard box material placed on the first jig. By pushing the bottom surface portion thereof into the recess surrounded by the first molding member and the second molding member. A second jig for pushing in, and a folding means for folding the folded-back portion at the tip of the second side face portion of the corrugated cardboard box material pushed into the concave portion of the first jig and raised inside, The first forming member, the second forming member, and the third forming member provided in one jig, when the cardboard box material is pushed in by the second jig, the third forming member first forms the reinforcing piece on the first side surface. Stand up a little to the department,
After that, the first molding member and the second molding member stand up the first side surface portion and the second side surface portion, and when the cardboard box material is pushed to a predetermined position, the first side surface portion and the second side surface portion become the bottom surface portion. An apparatus for assembling a corrugated board box, which has a shape to stand up to a right angle with respect to it.