JP2686541B2 - Method and apparatus for separating and folding lid flap of bottom case - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottom-adhered case that is widely used as various transport packages, and is used for forming an aggregate suitable for storage and transportation. And a method and apparatus for separating and folding the lid flap.

Conventional Technology and Problems of the Invention The bottom case is formed as shown in FIG. That is, a corrugated cardboard or the like is cut into the shape shown in A of the same figure, and this is folded to bond the respective parts to form the bottom sticking case 1 shown in the B of the same figure. More specifically, FIG. A is a development view in which the inner surface when the case is completed is the front surface, and the bottom plates 2a, 2b, 2c, 2d shown here are the side plates 3a, 3b, 3c. Bend inward along the fold lines 4a, 4b, 4c, 4d between the 3d and 3d, and glue the pieces 5a, 5c provided on the bottom plates 2a, 2c to the outside along the diagonal fold lines 6a, 6c. Bend. Next, fold line 7a on the side plate,
Bending inward along the fold lines 7b, 7d among 7b, 7c, 7d, and adhering the glued pieces 5a, 5c to the bottom plates 2b, 2d and the adhesive margin 8 to the side plate 3d, respectively. Complete the bottom case 1. The lid flaps 9a, 9b, 9c, 9d and the fold lines 10a, 1 between them and the side plate
0b, 10c, 10d and the fold lines 7a, 7c of the side plate are left as they are.

In the bottom case 1, the side plates 3a and 3d shown in FIG.
It is a finished product in a flat shape combined with 3c and is traded in this state. When the user uses the creases 7a, 7c
When the side plates 3a, 3b, 3c, 3d are bent so that the side plates 3a, 3b, 3c, 3d are spread in a rectangular shape, the bottom plates 2a, 2b, 2c, 2d automatically descend to form the bottom of the case.

In the transaction of the bottom-attached case, a large number of sheets, for example, 10 sheets are stacked to form an integrated body, which is bundled and handled.

In the bottom sticking case 1 in the state of FIG. 7B, the bottom side portion has a thickness of 4 to 5 materials, while the lid flaps 9a, 9b, 9c, 9d.
Since the portion is only two sheets thick, if they are stacked in the same direction, the packaging will be poor and it will be difficult to handle. For this reason, conventionally, like the stack 11 shown in FIG. Inverted and stacked.

Therefore, the operation of reversing the direction of the bottom sticking case 1 is required to form the conventional aggregate 11, and the reversing operation is also required when the user uses it. It's inconvenient.

Therefore, the present invention realizes a new stacking body that does not require this reversing operation while adjusting the packing style so that it can be handled easily, and at the same time, it is possible to perform the lid flap separation and folding work required for forming this stacking body with high efficiency and automatically. The present invention aims to provide a method and an apparatus for performing the same.

Means and Actions for Solving the Problems An aggregate of bottom-adhered cases realized by the present invention is a bottom-adhered case in which side plates are combined to have a flat shape, and a lid flap connected to each upper end of each side plate. Each of them is folded back to the outside and stacked on the side plate, and a plurality of bottom sticking cases of this shape are stacked in the same direction.

In this stack, since the bottom sticking case folds the lid flap, the thickness of the mouth side portion opposite to the bottom side portion is 4 materials, and the entire surface has a substantially uniform thickness. Even if a large number of sheets are stacked in the same direction, the whole aggregate becomes a substantially rectangular parallelepiped, and there is no problem in handling.

The lid flap separating and folding back method of the bottom sticking case of the present invention is a bottom sticking case in which side plates are combined to form a flat shape, and lid flaps that are respectively connected to the upper end portions of the side plates are stacked and bent in one direction. After that, at the tip of the lid flap having a step, only the protruding lid flap is hooked to separate the lid flaps, and each lid flap is folded back so as to overlap with the side plate.

In this method, the lid flaps of the bottom sticking case are bent in one direction with the two overlapping, and at this time a step is created at the tip of the lid flap, and using this step, only one lid flap is hooked. The lid flaps are then folded back so that they can be used for forming the aggregate.

The lid flap separation and folding device of the bottom sticking case of the present invention is a carrying conveyor that holds the vicinity of the bottom of the bottom sticking case that is flat with the side plates and conveys the lid flap with its side facing, A folding member that extends along the conveyor and bends in one direction by stacking lid flaps of the bottom sticking case according to the transportation, and following this folding member, provided along the transportation conveyor, At the tip of the lid flap that has a step due to bending, a separating member that hooks only the protruding lid flap to separate it from other lid flaps, and, following this separating member, is provided along the conveyor and is separated. The lid flap has a folding member that is folded back so as to overlap the side plate.

In addition, this separating and folding device uses a conveyer for horizontally transporting the flat bottomed case, a folding member for folding the lid flap upward, and other lid flaps by using elasticity and gravity to return the lid flap. It is possible to use a separating member for separating the.

In addition, in these separation and folding devices, the bending member, the separating member, and the folding member can be specifically configured with a spatula, a rod, a conveyor belt, or the like. Further, the folding member, the separating member, and the folding member do not necessarily have to be formed separately, and for example, one continuous spatula or the like becomes a separating member from the folding member due to a part, and further changes into a folding member. It is also possible to go.

In this separating and folding device, each step of bending, separating, and folding in the above method can be successively carried out while the bottom sticking case is transported by the transport conveyor.

In addition, if the bottom sticking case is transported horizontally and bent upward, when the protruding lid flap is hooked by the separating member, the other lid flaps will return due to both the elasticity and gravity of the material. , Separation will be quick and reliable.

Furthermore, the separation and folding device of the present invention, following the above device,
The bottom pasting case is placed almost horizontally and conveyed, the front end is brought into contact with the accumulation gate, and the lower case is sequentially fed from below to be stacked.
A stacking conveyor that forms a stack, a holding conveyor that holds down the bottom sticking case conveyed by this stacking conveyor from above, a holding spatula that holds down the bottom sticking cases that are stacked against the stacking gate from above, and a stacking gate. In contact with the top surface of the completed stacked body by stacking a predetermined number of sheets, the upper conveyor that applies forward force and the bottom pasting case that is conveyed and stacked by the stacking conveyor are counted, and when the stacked stack body is completed by a predetermined number, A counter for opening the stacking gate to discharge the stack, a transport roller for passing the stack released, an alignment gate for bringing the stack through the transport roller into contact and straightening the front end, and the transport roller. From the top and bottom, the alignment guide plate that guides the side surface of the accumulated stack and straightens the side surface, and the stack that is aligned by this alignment gate and the alignment guide plate. Look can also be made to have a delivery conveyor to be sent to the binding machine through the aligned gate to open at an appropriate time.

In this separating and folding device, the lid flap is separated and folded, and then the bottom pasting case is further stacked to form an aggregate,
It can be sent to the binding machine. That is, while holding the bottom corrugated case with the flap flap folded back with the pressing conveyer, it is placed on the collecting conveyer and carried and stopped by contacting the collecting gate,
Further, the bottom-adhered case is sequentially fed below the stopped bottom-adhered case and stacked. At this time, the bottom-adhered cases piled up slide against each other with the accumulating conveyor, and the upper surface is pressed by the pressing spatula so that the lid flap does not return. The bottom sticking cases thus stacked are counted by a counter, and when a predetermined number is reached and the stack is completed, the stacking gate is opened, and the stacking cases are discharged by the stacking conveyor and the upper conveyor in contact with the top surface of the stacking body. After this, the integrated gate closes immediately,
Contact the next bottom case. The stack thus discharged passes through the transport roller, and the side surface is guided by the alignment guide plate and comes into contact with the alignment gate. The stacks that are formed irregularly because they are stacked while sliding on the stacking conveyor are aligned by this, and have a shape in which the front, rear, left, and right are aligned straight. After that, the alignment gate is opened in accordance with the operation of the binding machine in the subsequent process, and this stack is sandwiched between the top and bottom by the delivery conveyor and delivered to the binding machine.

EXAMPLES Hereinafter, examples illustrating the present invention will be specifically described.

FIG. 1 shows an integrated body 12 realized according to the present invention. This stack 12 is formed by stacking the bottom sticking cases 13 shown in FIG. 2 in the same direction. This bottom case 13 is the same as the 7th
In the bottom-attached case 1 of FIG. B, the lid flaps 9a and 9d are fold 1
The side plates 3a and 3d are folded back along 0a and 10d, and the other flaps 9b and 9c are folded back along the fold lines 10b and 10c and side plates 3b and 3d.
It is superimposed on c.

Since the entire surface of the bottom sticking case 13 has a substantially uniform thickness, the aggregate 12 is a substantially rectangular parallelepiped.

3 to 5 show a separating and folding device for a lid flap according to the present invention.
Indicates 20.

In this device 20, the transfer conveyors 21, 21 are the frame 2
Long stretch along 2 and make the flat bottom case horizontal, hold the bottom part from the top and bottom, put the bottom part on the frame 22, turn the lid flap sideways, and from left to right in FIG. Transport.

The folding member 23 is composed of a spatula extending along the conveyors 21 and 21, and has a shape which is twisted from the horizontal direction in the conveying direction to ascend upward, and the lid flaps of the bottom sticking case 1 to be conveyed are overlapped. And then bend it upwards as it is transported.

Separation member 24, following folding member 23, transport conveyor 2
1, 21 is a spatula having a twisted shape similar to the bending member 23 and is bent by the bending member 23 to form a step 25. Hook it only and bend it further. At this time, the lower lid flap that cannot be hooked falls and returns due to the elasticity and gravity of the bottom sticking case material, and the upper and lower lid flaps are widely opened and separated.

The folding members 26, 26 are provided along the conveyors 21, 21 subsequent to the separating member 24, and are formed by round rods that are twisted and elongated, and the upper and lower lid flaps are hooked respectively to the side of the folding bottom sticking case. Make sure it overlaps the face plate.

FIG. 6 shows a stacking unit 31 which is a part of another separating and folding apparatus 30 of the present invention. The separating / folding device 30 is provided with the illustrated stacking unit 31 subsequent to the device 20, and the stacking unit 31 shown in the drawing will be described below.

In the stacking unit 31, the stacking conveyor 32 receives the bottom sticking case 13 in which the first half is an upslope and the second half is horizontal, and the lid flaps are folded back from the previous process, lays it flat, and carries it from left to right in the figure. A holding conveyor 33 is provided on the front half of the stacking conveyor 32 to hold the bottom sticking case 13 being conveyed from above, so that it can be smoothly carried and the folded flaps do not return. A stacking gate 34 is provided on the latter half of the stacking conveyor 32, and can be opened by rotating around a vertical axis (not shown) on the side of the stacking conveyor 32, and is normally closed and conveyed. Abut 13 and stop. At this time, the conveyor 32 slides on the lower surface of the bottom sticking case 13, and the bottom sticking case 13 to be carried next is sent to the lower surface of the already stuck bottom sticking case 13 and stacked. A presser spatula 35 is provided in front of the accumulation gate 34 by a spring 36 so as to urge the presser spatula 35 downward to press the upper surface of the bottom sticking case 13 that is being stacked. Furthermore, an upper conveyor 37 is provided above the latter half of the stacking conveyor 32, and a bottom sticking case is provided in front of the stacking gate 34.
When a predetermined number of sheets of 13 are stacked to complete the aggregate 12, the advancing force can be applied in contact with the upper surface. Accumulation conveyor
A counter 38 using an optical sensor is provided at the center of 32 to count the bottom sticking case 13 being conveyed and to collect the integrated gate 34.
When the number of sheets stacked in front reaches a predetermined number and the integrated body 12 is completed, the integrated gate 34 is opened and the integrated body 12 is discharged to the front. After the integrated gate 34 is opened, the integrated gate 34 is immediately closed so that the bottom sticking case 13 abuts on the integrated gate 34, and counting is started again from the beginning.

Following the stacking conveyor 32 and the upper conveyor 37, the transport rollers 39 ,.
However, they are provided so as to sandwich and feed the stack 12. An alignment gate 41 similar to the stacking gate 34 is provided at the center of the delivery conveyors 40, 40, and alignment guide plates 42, 42 (only 1 is shown) are provided on both sides of this front side. Therefore, the integrated body released by opening the integrated gate 34.
The 12 passes through the conveying rollers 39, ... Between the delivery conveyors 40, 40, contacts the alignment gate 41 and straightens the front end, and at the same time, the side surfaces are sandwiched by the alignment guide plates 42, 42 and straightened. Stop. After that, the aligning gate 41 is opened and delivered in accordance with the operation time of the binding machine conveyors 43, 43 and the binding machine 44 installed subsequent to the delivery conveyors 40, 40, and the packaging is completed.

EFFECTS OF THE INVENTION Since the bottom stuck case assembly realized according to the present invention is formed by stacking in the same direction as described above, the stacking case and the using case are the same as in the conventional case. It does not require reversing operation and is very convenient to handle. Of course, since the lid flap is folded back and the entire surface of the bottom case has a substantially uniform thickness, the packaging looks like a rectangular parallelepiped, and there is no problem in handling it as an aggregate.

According to the method for separating and folding the bottom sticking case of the present invention, once the conventional flat bottom sticking case is completed and then the lid flap is separated and folded back, it can be used without any change in the conventional box making process. You can Then, the lid flaps are stacked and bent, and at this time the lid flaps are hooked and separated by utilizing the step formed at the tip of the lid flaps. Even if the rigidity is high, the lid flap can be separated more easily without any trouble, especially when the material is thick.

The apparatus for separating and folding a bottom-sticking case of the present invention is to carry out the above method while the bottom-sticking case is sandwiched by a transport conveyor and is being transported, and the work can be performed continuously and with high efficiency.
Especially, when the bottom sticking case is transported horizontally and the lid flap is bent upward, the lower lid flap that is not hooked on the separating member returns due to both the elasticity and gravity of the material, so easier and more reliable separation is possible. It will be possible.

Further, when the separating / folding device is provided with a stacking section below the stacking conveyor, the work up to forming the stack can be continuously and automatically performed.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a bottom sticking case assembly realized by the present invention, and FIG. 2 is a plan view of a bottom sticking case forming the stack. FIG. 3 is a plan view of an embodiment of a lid flap separating and folding device for a bottom sticking case of the present invention, and FIG. 4 is a sectional view taken along line IV-IV of the previous figure.
FIG. 5 is a sectional view taken along line VV of FIG. FIG. 6 is a side view showing a stacking portion of another embodiment of the lid flap separating and folding device. FIG. 7 is an explanatory view of the bottom sticking case, a development view seen from the inner surface side of A, and B is a plan view in which side plates are combined to have a flat shape. FIG. 8 is a side view of a conventional integrated body. 1 ... Bottom sticking case, 12 ... Aggregate, 13 ... Bottom sticking case in which lid flap is folded back, 20 ... Lid flap separating and folding device,
21,21 …… Conveyor, 23 …… Bending member, 24 …… Separating member, 25 …… Step, 26,26 …… Folding member, 30 …… Cover flap separating and folding device, 32 …… Stacking conveyor, 33 ...... Presser conveyer, 34 …… Accumulating gate, 35 …… Presser spatula, 37 …… Upper conveyor, 38 …… Counter, 39, ………… Conveying rollers, 4
0,40 …… Sending conveyor, 41 …… Alignment gate, 42 …… Alignment guide plate, 44 …… Bundling machine.

Claims (4)

(57) [Claims] 1. A lid flap having a flat bottom casing formed by combining side plates and connecting lid flaps connected to the upper ends of the respective side plates and bending them in one direction, after which a step is formed. A lid flap separating and folding method for a bottom-attached case in which only the protruding lid flaps are hooked at the tip to separate the lid flaps, and each lid flap is folded back so as to overlap the side plate. 2. A conveyer for sandwiching the vicinity of the bottom of a bottom case having a flat shape by combining side plates and conveying the lid flap laterally, and a long conveyer extending along the conveyer. A folding member that overlaps the lid flaps of the bottom sticking case according to the conveyance and bends in one direction, and at the tip of the lid flap that is provided along the conveyance conveyor following the folding member and that has a step due to the bending. , A separating member that hooks only the protruding lid flap to separate it from other lid flaps, and, following this separating member, is provided along the conveyor and folds the separated lid flaps so that they overlap the side plate. A lid flap separating and folding device for a bottom-attached case having a returning member. 3. The conveyor according to claim 2, wherein the flat bottomed case is conveyed horizontally, the folding member for folding the lid flap upward, and the other lid flap are returned by using elasticity and gravity. , A lid flap separating and folding device for a bottom-attached case, which uses a separating member for separating the lid flap. 4. The separation and folding device according to claim 2 or 3,
The bottom pasting case is placed almost horizontally and conveyed, the front end is brought into contact with the accumulation gate, and the lower case is sequentially fed from below to be stacked.
A stacking conveyor that forms a stack, a holding conveyor that holds down the bottom sticking cases conveyed by this stacking conveyor from above, a holding spatula that holds down the bottom sticking cases that are stacked by hitting a stacking gate, and a stacking gate. When a predetermined number of stacked stacks are completed, a predetermined number of stacked stacks are brought into contact with the upper surface of the stacked stack, and an upper conveyor for applying a forward force and a bottom pasting case that is conveyed and stacked by the stacking conveyor are counted. A counter for opening the stacking gate to discharge the stack, a transport roller for passing the stack released, an alignment gate for bringing the stack through the transport roller into contact and straightening the front end, and the transport roller. From the top and bottom, the alignment guide plate that guides the side surface of the accumulated stack and straightens the side surface, and the stack that is aligned by the alignment gate and the alignment guide plate. Seen, bottom pasting case of the separation folding return device and a delivery conveyor to be sent to the binding machine through the aligned gate to open at an appropriate time.