JP2000153816A - Method and device for folding case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a case folding method for forming a case into the flat shape to reduce the volume of the case, accelerating the reuse, recycle and the like of the case in a good manner and folding the case in an efficient and continuous manner on a carrying body by providing a simple and inexpensive constitution in a method of opening the case by using a cover and then folding the same and also provide a device thereof. SOLUTION: An outer cover of a case set on a folding section is opened, and then inner covers are opened and the hollow case is folded to one side to reduce the volume of the case in a case folding method. A folding device is constituted of a carrying body 4 transferring a case on which an outer cover in the side-facing posture is placed from one side to the other side, a case opening device 3 provided with an upper flap 8R and opening the outer cover of the case by a double-leaf hinged door on the folding section of the carrying body 4, a rear flap 9R and a front flap 7R for opening the front and rear inner covers N by the double-leaf hinged door and a folding device 5 for folding the case opened on the terminals of the folding section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box folding method and apparatus which can fold a box such as a cardboard box from which a fastener such as a gum tape is released while opening a lid.

[0002]

2. Description of the Related Art Conventionally, a cardboard box capable of storing various articles such as vegetables, fruits and foods has an inner lid which is opened opposite to an upper part (upper lid) and a lower part (bottom lid) of a box cylinder body. And an outer lid, which is used by attaching and closing the outer lid with an appropriate stopper such as a gum tape or a vinyl tape. Then, open the outer lid and the inner lid on the upper side, take out the items inside and empty the box, crush it with appropriate means as it is, or use a gum tape as a stopper for the bottom lid After removing (releasing) the stopper, the outer lid and the inner lid are opened and then folded along the fold line of the box body to reduce the volume to a flat shape, and then discarded or recycled as paper resources.

[0003]

However, in the conventional box folding processing means, a crushed box or a box that is improperly folded is restored as a box capable of storing articles again. It is difficult to use, and there is a problem that a box that cannot be reused is incinerated without stopping. In addition, manual folding of a large number of empty boxes has a problem that it is extremely complicated and requires a large amount of labor, and the folded state of the box is easily damaged. For this reason, it is not possible to sufficiently perform the stripping and removing work of the stopper made of a foreign material different from paper materials, which is required when shifting the box to the recycling process, and hinders the recycling of empty boxes. Problem.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, the box folding method according to the present invention firstly opens the outer lid M of the box W installed in the processing section. Thereafter, the inner lid N is opened, and the volume is reduced by folding the hollow box W toward one side.

Second, the box W is placed on the carrier 4 with its outer cover M
After the outer lid M is opened with the left and right upper flaps 8L and 8R, the inner lid N is opened with the left and right rear flaps 9L and 9R and the front flaps 7L and 7R. The box W in a state where the support of the lid N is released is
It is characterized in that box folding is performed by pushing in the direction of the main body 2.

Further, the box folding apparatus according to the present invention comprises, firstly, a carrier 4 for transferring a box W on which the outer lid M is placed in a horizontal position from one side to another rule, and the carrier 4 The upper flap 8L that opens the outer lid M of the box W in the processing section of
8R and rear flaps 9L, 9 that open front and rear inner lids N
It is characterized by comprising a box opening device 3 provided with an R and front flaps 7L and 7R, and a folding device 5 for folding the box W opened at the end of the processing section.

Second, the box opening device 3 is provided so as to be able to move up and down according to the height of the box, and the rear flaps 9L and 9R are provided so as to be able to advance and retreat according to the length of the box.
L, 7R, rear flaps 9L, 9R and upper flap 8L,
It is characterized in that one side of the 8R is provided so as to be able to advance and retreat according to the width of the box.

Third, the support arms 71, 8 which rotate the upper flaps 8L, 8R, the rear flaps 9L, 9R and the front flaps 7L, 7R from the standby position to the cover open position about the support shaft.
1 and 91 and hooks 73, 83 and 93 provided on the support arms 71, 81 and 91 so as to be able to advance and retreat.

Fourth, the hooks 73 and 93 of the rear flaps 9L and 9R and the front flaps 7L and 7R are formed by plate-like bodies bent inwardly in a plan view. .

Fifth, a box crushing body 52 capable of switching the folding device 5 between a standing posture and a folding posture in front of the processing unit;
It is characterized by comprising a roller 50 that crushes and transports a box W folded between itself and the carrier 4.

[0011]

An embodiment of the present invention will be described with reference to the drawings. First, as shown in FIGS. 1 to 5, a processing apparatus 1 for folding a box W such as a cardboard box according to the present invention includes a box opening device 3 above a machine body 2 formed in a box frame shape.
While being horizontally supported by guide shafts 20 vertically suspended from both sides of the machine body 2, the machine body 2 is provided so as to be able to ascend and descend according to the height of the box body. And a folding device 5 provided at the end of a processing unit formed below the box opening device 3 in the middle of the carrier 4 and a middle unit. It is composed of the provided box width setting device 6 and the like.

These components are a control panel 10 installed below the transport body 4 and an operation panel 11 for the control panel provided on the front of the machine body. Each of the components such as a cylinder and a motor is arranged as shown in FIG. By operating the actuators at the timing shown in FIG. 7, the lids formed on both sides of the upper side and the bottom side of the box W are properly opened and quickly folded to reduce the volume. Discharge processing can be carried out in the collection container 12 installed outside.

The box W to be processed by the processing apparatus 1 of this embodiment has a rectangular shape capable of accommodating vegetables and various articles, and has a lid having an inner lid N and an outer lid M on the upper and lower sides. The part consists of a cardboard box with a conventional lid stopper means in which the part is adhered and closed with a stopper such as a gum tape, and the stopper is cut in advance using an unillustrated unpacking device or an artificial cutter. The box W after unpacking is placed and supplied on the carrier 4 in a horizontal orientation as shown in FIGS.

The processing apparatus 1 has a length of about 320
~ 550mm, width 230 ~ 400mm, height 160
According to the size of the box W of about 400 mm, the box is automatically opened by the box opening device 3 to facilitate the folding, and then the folding device 5 performs the folding properly.
Even a large amount of used box bodies W can be sequentially and efficiently reduced in volume easily, so that the following recycling as paper resources and reuse as cardboard boxes can be performed well.

Next, the detailed configuration of each unit will be described.
First, as shown in FIG. 2 to FIG. 5 and FIG. 8, the box opening device 3 is a U-shaped horizontal lifting frame 30 that is long in the front-rear direction in plan view.
The guide shaft 2 is held in a state in which the widthwise frame 31 is slidably supported by slide shafts 32 provided on both sides.
The bracket 30a is fitted into the bracket 0 to pivotally support a substantially horizontal posture, and between the rotating shaft 33 driven by a lifting motor 3M provided on the lifting frame 30 side and the body 2 by pin-on engagement with the rack. Drive mechanism 35 configured
Is supported so as to be able to move up and down.

The front and rear flaps 7L and 7R, the upper flaps 8L and 8R, and the rear flaps 9L and 9R, which are paired on the left and right from the front, respectively, are provided on the lifting frame 30 and the width side frame 31, respectively. . In addition, width frame 3
1 is adapted to be fixed in the box width direction (box height direction) on the carrier 4 as shown in FIG. 12 by fixing to the piston side of the box width setting cylinder 36 provided on the lifting frame 30 side. The slide movement is adjustable.

As shown in FIGS. 5, 8, 16, and 27, the front flaps 7L and 7R and the rear flaps 9L and 9R
The support arms 71, 91 pivotally supported inwardly around the vertical axes (support shafts) 70, 90 are attached to the lifting frame 3
0 and the cylinder 7 pivotally supported on each side by the width frame 31
The hooks (clamps) 73 and 93 are connected to the support arms 71 and 91 and slidably provided on the support arms 71 and 91.
1 are connected to the clamping cylinders 75 and 95 provided. The rear flaps 9L and 9R are slidably supported in the front-rear direction by guide rails provided separately on the rear portions of the lifting frame 30 and the width-side frame 31, and are provided with cylinder length setting cylinders 96 provided on the lifting frame 30. It is connected to a piston, and is provided to be able to reciprocate in the front-rear direction according to the length of the box.

On the other hand, as shown in FIGS. 10 to 15, the upper flaps 8L and 8R are provided with a support arm 81 pivotally supported in an inwardly rotatable manner about a horizontal shaft (support shaft) 80.
And a cylinder 82 pivotally supported on the frame 31 in the vertical direction.
And a hook (clamp) 83 similar to the one described above is connected to a clamping cylinder 85 provided on the support arm 81. Thus, the upper flaps 8L, 8R and the rear flaps 9L, 9R
And the front flaps 7L, 7R are provided with support arms 71, 81, 91 which pivot from a standby position to a cover open position about a support shaft, and hooks 73, 83 provided on the support arms 71, 81, 91 so as to be able to advance and retreat. , 93 have the advantage that the device can be made simple and inexpensive because of the common structure. The hook in the illustrated example is provided at its end with a top guide that rolls in contact with the lid.

Next, the carrier 4 will be described with reference to FIGS. The transport body 4 has a flat belt 43 stretched around a driving roller 41 and a floating roller 42 driven by a conveyor motor 40 supported before and after the body 2. On the supply side of the belt 43, a positioning guide 45 for positioning and regulating the box W at the reference position (left side), and a guide for pressing the box W placed on the belt 43 against the guide 45 with a spring. A rod 45a is provided. At the front of the guide rod 45a, an inlet stopper 48a for regulating and maintaining the box W in the standby position is provided, and the inlet stopper 48a is protruded from the belt 43 so as to be able to advance and retreat on the belt 43 by the operation of the cylinder 48. It is in charge of stopping and passing.

On both sides of the processing section of the belt 43, box guides 6L and 6R as box width setting devices 6 for holding the box W in a sandwiching state are separately supported by box guide cylinders 46 and 47, respectively. The box W is stably fixed at the time of work so that the operation of the box opening device 3 can be satisfactorily performed. At the end of the processing unit, a folding device 5 for folding and reducing the volume of the box W opened with the box opening device 3 is installed on the belt 43, and the lid is opened for positioning of the transferred box W. The work is performed accurately, and the box W, which is opened and easily foldable by opening the lid, is accurately folded from the dotted line state shown in FIG. 5 to the solid line state along the fold of the rectangular tubular main body. I can do it.

That is, as shown in FIGS. 3 and 5, the folding device 5 has a folding roller 50 having a folding motor and a built-in roller motor 5M with a folding gap above the belt 43. The roller 50 is forcibly driven to rotate at the time of folding, and the roller 50 is pivotally supported on the lower side of the portal frame 51a rotatably supported on the body 2 and is mounted on the upper portion of the portal frame 51a. Stands up a box crushed body (box crushed) 52 having a plurality of box receiving rollers 51.

A box crushing cylinder 53 is provided between the portal frame 51a and the body 2 and connected to each other.
The box crushing body (box crushing) 52 is configured to be switchable between an upright box receiving posture and a box crushing posture in which the box crushing member is tilted and rotated rearward by the expansion and contraction movement of the cylinder 53. With this configuration, the box body W opened with the inner cover N removed by the box opening device 3 is transferred forward on the belt 43 as it is, and the box body W is concisely moved between the box crushed body 52 and the belt 43. With such a configuration, it has a feature that it can be smoothly folded to reduce its volume and can be efficiently discharged outside the machine.

The processing apparatus 1 configured as described above is
Each of the actuators including the above-described cylinders and motors arranged as shown in FIG. 6 detects the position of the box W by sensors installed at appropriate positions, and detects the operation and position of the actuator. 26, the box body W can be folded and discharged while opening the box in each step shown in FIG. 26 by operating in the order set in the control box 10, that is, in the order and timing shown in the operation diagram of FIG. I have to.

In FIG. 1, among the sensors S, 1S
Is an entrance work presence sensor for operating the cylinder 48 to protrude and retract the entrance stopper 48a to regulate and release the transfer of the box W, and to drive the belt 43;
When the passage is detected, the entrance stopper 48a is returned to the original protruding position and the box guides 6L and 6R are moved to predetermined positions. A work passage sensor 3S makes the box W contact the folding device 5. Is a folding section work presence sensor that detects the processing posture in the folded state, stops the belt 43, and lowers the box opening device 3, and 4S denotes an exit work that detects that the box W has been folded and discharged. It is a passage sensor.

5S and 6S are boxes W at the processing position.
Is a box length setting sensor that detects the length of the rear end and operates the cylinder 96 to position the rear flaps 9L and 9R.
7S is an ascending / descending limit sensor for stopping the box opening device 3 at a predetermined height adapted to the height of the box W.

Next, the processing operation of the box W according to the present invention configured as described above, a folding processing method, and the like will be described with reference to FIGS. 10 to 15 and FIGS. First, the box W is placed on the supply side of the belt 43 with the stopper 48.
a, the sensor 1S detects this, and retreats the stopper 48a.
The belt W is transferred to the processing section by driving the belt 43. Here, after the width is fixed at the processing position by the box guides 6L and 6R, each section operates in a series in the manner shown in FIG. Performs folding processing smoothly.

That is, the box opening device 3 lowered by the operation of the lifting / lowering motor 3M from the standby position indicated by the solid line in FIG. 2 and the dotted line in FIG.
When the descent is stopped at the processing position indicated by the solid line 0, the cylinder 8
2 causes the upper flap 8R to assume a hanging posture (FIG. 11), and then, as shown in FIG.
6, the width frame 31 is moved inward, and the hook 83 is stopped at the open position where the lower outer lid M is pushed in and inserted under the upper outer lid M. Also, at this time, the other upper flap 8L is similarly inserted under the other outer lid M by the extension of the cylinder 82, and the hook 83 is set to the open position (FIG. 13).

Then, as shown in FIG.
85 is retracted, the hooks 8 on both upper flaps 8L, 8R
15, the upper flaps 8L, 8R are brought into a state in which the lower ends of the outer lids M on both upper sides are hooked and gripped, and then the cylinders 82, 82 contract simultaneously, as shown in FIG.
Is rotated upward about the horizontal shafts 80, 80, and the outer lid M locked by the hooks 83, 83 is held in a state where both are opened as shown by arrows.

When the above operation is completed, FIG.
The process proceeds to an inner lid opening step of opening the front and rear inner lids N shown in FIG. In this step, first, as shown in FIG.
L and 9R are moved from the standby position in the direction of the arrow by the contraction of the cylinder 96 to set the box length. From this state, the cylinder 95 is extended to enter the lid opening step shown in FIG. When the inner lid N enters the inside of the end of the inner lid N and then the hook 93 is retracted by the contraction of the cylinder 95 to lock the end of the inner lid N (FIG. 18), the rear flaps 9L and 9R are moved by the arrows of the cylinder 92. Return to the original position in the direction, and open the inner lid N in both directions (FIG. 19). Then, at this time, the lower outer lid M covering the inner lid N is pushed by the inner lid N by the opening operation of the inner lid N, so that the inner lid N opens efficiently and smoothly from the inside to the outside. Therefore, a dedicated flap for opening the lower outer lid M can be omitted.

Next, a front middle lid N opening step shown in FIGS. 20 to 22 is started. In this case, the rear flaps 9L and 9
The front outer flap M is double-opened by the operation of the front flaps 7L and 7R similar to R, and accordingly, the lower outer flap M portion is also completely opened toward the lower side while applying its own weight. become. Therefore, since the box W is placed on the belt 43, that is, on the processing section in a horizontal position, the lower outer lid M can be opened together with the operation of forcibly opening the inner lid N. Since the installation of a flap or the like for opening the outer lid M can be omitted, the configuration of the processing apparatus 1 can be simplified and inexpensive, and the opening operation of the outer lid M can be performed promptly and efficiently. There are advantages such as possible.

When the lid opening process is completed as described above, the process goes through a returning process of the box opening device 3 shown in FIGS. 23 to 25, and then proceeds to a folding process and a discharging process shown in FIG.
A series of processing operations for the box W can be smoothly completed. That is, in the above-mentioned returning step, the inner lids N,
After the locking of the outer lid M is released, the rear flaps 9L and 9R are retracted to the standby positions as shown in FIG. 24, and the lift motor 3M is operated in a state where each flap is returned to the original position, After the box opening device 3 is raised and separated from the box W, the box crushed body 52 is tilted, and the roller 50 is rotated to shift to the folding step.

In this folding step, the box W, which is opened and the support of the cover is removed in a side view to form a hollow rectangular tube, is pushed from one side of the box W from the front side. As the lower side moves in the transport direction and enters the folding gap, as shown in FIG. 5 and FIG. The belt 43 is conveyed by crushing, and is properly discharged from the end of the belt 43 to complete a series of operations. Then, the discharged folded box W is stored in the collection container 12 in an orderly stacked state in a state where it is folded as flat as possible, so that subsequent reuse is suitably performed. In addition to being able to be carried out, it can be easily transported and handled without being bulky, and can smoothly promote processing such as recycling.

The hooks of the flaps are not limited to those shown in the drawings, but may be constructed as shown in FIGS. 27 and 28. In this case, the rear flaps 9L and 9R and the front flaps 7L and 7R are used. Of the hooks 73 and 93 are formed in a plate-like body which is bent in an inwardly bent shape in a plan view, for example, a substantially square box body W in which the ends of the front and rear inner lids N are close to each other. Can be opened smoothly and promptly.

That is, the hooks 73 and 93 are formed so as to have a guide surface in which a rigid flat plate is bent inward by approximately 45 degrees, thereby forming the rear flap 9L as shown in FIG. , 9R pushes the front inner lid N when opening the inner lid N, the guide surface can satisfactorily push and release the inner lid N on the back side,
The hook 93 is moved backward by the compression of the cylinder 95.
And the rear flaps 9L and 9R can be properly opened by the return rotation of the rear flaps 9L and 9R.

Next, when the front flaps 7L and 7R are opened, as shown in FIG. 28, the front inner lid N pressed into the box as described above is tilted inward of the hook 73. Of the inner lid N is securely moved and locked to the base side along the inclined surface, and the lid is accurately moved with the return rotation of the front flaps 7L and 7R. It can be opened. Therefore, it is possible to open the box well even in the box body W in which the front and rear inner lids N are close to each other, and to make it possible to use a long flap without shortening the length of the flap, and to use a wide range of sizes. Box W
There is an advantage that the box opening can be performed accurately.

In the illustrated example, the rear flaps 9L and 9R are operated before the front flaps 7L and 7R.
Without being limited to this, the front flaps 7L and 7R may be operated before the rear flaps 9L and 9R. The rear flaps 9L and 9R, the front flaps 7L and 7R, and the upper flaps 8L and 8R are operated by cylinders provided separately, as described above.
L, 9R, front flaps 7L, 7R and upper flap 8
Each pair of L and 8R may be connected to each other by an appropriate link mechanism, and the link mechanism may be driven by a single cylinder or a motor. In this case, the number of cylinders is reduced to make the configuration simpler. It can be inexpensive.

[0037]

According to the present invention, the following effects can be obtained by adopting the above-described box folding method and apparatus. The inner lid is opened after the outer lid of the box installed in the processing unit is opened, then the lid is opened, the support of the lid is removed, and the hollow cylindrical box is folded toward one side. Thereby, it can be easily folded with a light force, and since the folded box becomes a flat shape with a reduced volume in a proper shape, it can be easily reused as a container thereafter. In addition, it is easy to remove and transport the stopper, and it is possible to favorably promote recycling and the like.

In the case where the outer lid is placed sideways on the carrier, the outer lid can be easily opened with the upper flap, and the inner lid can be accurately closed with the rear flap and the front flap. It can be opened, and it is possible to satisfactorily fold the box with the crushed box in a state where the support inside the box is released.

Further, the processing apparatus according to the present invention comprises a transporting body for transferring a box placed in a lateral orientation from one side to another rule, an upper flap for opening both sides of an outer lid of the box in the processing unit, and a front and rear center. A box opening device equipped with a rear flap and a front flap that opens the lid on both sides, and a folding device that folds the box that has been opened, make it possible to accurately open the outer lid and the inner lid of the box on the carrier. In addition to a simple and inexpensive configuration, a processing device capable of efficiently and successively folding a box with an open lid in a short path and capable of performing a large amount of box processing is provided. Can be provided.

The front flap, the upper flap, and the rear flap are constituted by a support arm that rotates from a standby position to a cover open position around a support shaft, and a hook provided on the support arm so as to be able to advance and retreat. The upper outer lid can be opened accurately, the lower outer lid can be pushed open by the opening operation of the inner lid, and the configuration of the processing apparatus can be manufactured simply and at low cost.

At this time, when the front flap and the rear flap are formed so that their hooks are bent inwardly in a plan view, it is possible to open the box well even with a box in which the front and rear inner lids are close to each other. In addition to this, there is an advantage that a box of a wide range of sizes can be accurately opened without shortening the length of the flap.

The folding device is constituted by a box crushed body which can be switched between an upright posture and a folding posture in front of the processing unit, and a roller for crushing and transporting the box. It is possible to satisfactorily fold between the roller and the conveyance body while inclining properly with an inexpensive configuration.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a use mode of a box folding apparatus according to the present invention.

FIG. 2 is a front view showing the configuration of the processing apparatus of FIG. 1;

FIG. 3 is a right side view showing a part of FIG.

FIG. 4 is an enlarged view of the box opening device and the folding device of FIG. 3;

FIG. 5 is a front view showing a configuration of a box opening device, a carrier, and a folding device of FIG. 2;

FIG. 6 is a perspective view showing an arrangement configuration of actuators and sensors of the processing apparatus.

FIG. 7 is a timing chart showing the operation of each part of the processing apparatus.

FIG. 8 is a plan view showing the configuration of the box opening device of FIG. 2;

FIG. 9 is a front view showing the configuration of the box opening device, the carrier, the folding device, and the box width setting device of FIG. 2;

FIG. 10 is a side view showing a first operation of the upper flap.

FIG. 11 is a side view showing a second operation of the upper flap.

FIG. 12 is a side view showing a third operation of the upper flap.

FIG. 13 is a side view showing a fourth operation of the upper flap.

FIG. 14 is a side view showing a fifth operation of the upper flap.

FIG. 15 is a side view showing a sixth operation of the upper flap.

FIG. 16 is a plan view showing a first operation of the front flap and the rear flap.

FIG. 17 is a plan view showing a second operation of the front flap and the rear flap.

FIG. 18 is a plan view showing a third operation of the front flap and the rear flap.

FIG. 19 is a plan view showing a fourth operation of the front flap and the rear flap.

FIG. 20 is a plan view showing a fifth operation of the front flap and the rear flap.

FIG. 21 is a plan view showing a sixth operation of the front flap and the rear flap.

FIG. 22 is a plan view showing a seventh operation of the front flap and the rear flap.

FIG. 23 is a plan view showing an eighth operation of the front flap and the rear flap.

FIG. 24 is a plan view showing a ninth operation of the front flap and the rear flap.

FIG. 25 is a plan view showing a tenth operation of the front flap and the rear flap.

26A and 26B show a method of processing a box, and FIG. 26A is a perspective view of an unpacked box. (B) is a perspective view showing the lid opening of the outer lid on the upper part of the box. (C) is a perspective view showing the lid opening of the middle lid on the rear side of the box. (D) is a perspective view showing the opening of the middle lid on the front side of the box. (E) is a perspective view which shows the folding of the box body which opened the lid.

FIG. 27 is a plan view showing an operation of a hook according to another embodiment.

FIG. 28A is a plan view showing an operation in a step subsequent to FIG. 27; (B) is an enlarged plan view of the hook portion showing the operation of the next step of (A). (C) is a perspective view showing the shape of the hook.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processing apparatus 2 Body 3 Box opening apparatus 4 Transporter 5 Folding apparatus 6 Box width setting apparatus 7L, 7R Front flap 8L, 8R Upper flap 9L, 9R Rear flap 50 Roller 52 Box crushed body 70, 90 Vertical axis (support axis) 71, 81, 91 Support arm 73, 83, 93 Hook 80 Horizontal axis (support axis) 92, 95, 96 Cylinder N Inner lid M Outer lid W Box body

Continuation of the front page (72) Inventor Atsumi Sakamoto 666 Izumo-go, Higashi-Izumo-cho, Yatsuka-gun, Shimane Pref.

Claims (7)

[Claims] 1. After opening an outer lid (M) of a box (W) installed in a processing section, open an inner lid (N) and place a hollow box (W) on one side. A box folding method that reduces the volume by folding it up. 2. A box (W) is placed on a carrier 4 with its outer lid (M) in a horizontal position, and the outer lid (M) is held by left and right upper flaps (8L) and (8R). After opening the lid, open the inner lid (N) with the left and right rear flaps (9L) and (9R) and the front flaps (7L) and (7R), and release the support of the inner lid (N). The body (W) is crushed into a box (5
2. The method for folding a box according to claim 1, wherein the box is folded by being pushed toward the main body in step 2). 3. A transporter (4) for transferring a box (W) on which an outer lid (M) is placed in a horizontal position from one side to another rule, and a box in a processing section of the transporter (4). Upper flaps (8L) and (8R) that open both outer lids (M) of (W) and rear flaps (9L) and (9R) that open both front and rear inner lids (N) and front flaps (7L) and (7R). ) With box opening device (3)
And a folding device (5) for folding the box (W) opened at the end of the processing section. 4. A box opening device (3) is provided so as to be able to ascend and descend according to the height of the box, and the rear flaps (9L), (9)
R) is provided so as to be able to advance and retreat according to the length of the box, and the front flaps (7L) and (7R) and the rear flaps (9L) and (9)
4. A box folding apparatus according to claim 3, wherein one of the upper flaps (R) and the upper flaps (8L) and (8R) is provided so as to be able to advance and retreat according to the width of the box. 5. Upper flaps (8L), (8R) and rear flaps (9L), (9R) and front flaps (7L), (7)
R) moves back and forth between the support arms (71), (81), and (91) that rotate from the standby posture to the lid open posture about the support shaft, and the support arms (71), (81), and (91). The box folding apparatus according to claim 3 or 4, wherein the apparatus comprises a hook (73), (83), and (93) provided so as to be capable of being provided. 6. A plate body in which the rear flaps (9L) and (9R) and the hooks (73) and (93) of the front flaps (7L) and (7R) are bent inwardly in a plan view. 6. The box folding apparatus according to claim 3, wherein the box folding apparatus is formed by: 7. A box crush body (52) capable of switching a folding device (5) between a standing posture and a folding posture in front of a processing unit.
And a roller (50) for crushing and transporting the box (W) folded between the carrier (4) and the carrier (4).