JPH06286739A - Unpacking method for box, and device therefor - Google Patents

Abstract

PURPOSE:To unpack a box without cutting it by moving a plate form body from a gap between a pair of outer flaps along the outer flaps to inner flaps. CONSTITUTION:A sent-in box is first fed in an outer flap separating device 21. At this time, the leading end of the box on the downstream side is stopped by a stopper 36a on the downstream side, and then, a positioning of the box in the carrying direction is performed by a stopper 36b on the upstream side. Then, pressing plates comes into contact with two lateral side surfaces of the box, and bring the box into contact with a positioning plate, and a position of the box in the orthogonal direction to the advancing is performed. Then, a suction cup 34a bends the central part of a lower outer flap of the box to the outside, and forms a gap between the outer flap and a content. Under this condition, a cylinder 24 is operated to insert a plate shaped body 25 in the gap, and the plate shaped body 25 is moved in the carrying longitudinal direction of the box, and the outer flap and inner flap are separated. Then, in a separating device 22, an upper outer flap and inner flap are separated in the same manner as one separating device 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box unpacking method and apparatus for opening a flap sealing portion formed on a side surface of a box.

[0002]

2. Description of the Related Art As a box for accommodating contents such as canned beer, perforations extending to both ends are provided at approximately the center of the height of both longitudinal sides, and perforations are provided at the centers of both sides. There is one that has a slit in the vertical direction so that the finger can be inserted with a wider width. This unsealing work is performed manually.By inserting a finger into the slit, the perforation is cut a little to open it, and a band-shaped part is grasped and cut along the perforation to open the box body. Split up and down,
The contents are taken out from the box.

On both sides of the short side of the box body, an inner flap extending from the both sides serves as an inner wall, and an outer flap and an outer flap extending from upper and lower surfaces serve as outer walls, and both ends of the outer flap and the outer flap. It has a structure that is attached to the inner flap at the part.

Conventionally, there is an apparatus described in Japanese Patent Laid-Open No. 53-39492 as a device for mechanically unsealing a box and taking out the contents therein regardless of the type of the box. In this box unpacking device, since the type of box is not specified, cut the vicinity of one side with a rotating round knife, and make a small hole on the side opposite to this side, The pusher is inserted and the contents are pushed out.

[0005]

However, in the conventional unpacking device, a knife for cutting the box body and a punching knife for making a hole in the end surface of the box body are required. A mechanism for operating both knives is required, and the structure becomes large as a whole. Further, since the box to be processed is cut, the processing of the cut pieces of the cut box is complicated, and there is a drawback that the cut box cut pieces stain the surroundings of the device.

The present invention focuses on the fact that the flaps are adhered so that there are gaps between the outer flaps on both sides of the short side of the box body, and this flap is cut without cutting the box body. It is an object of the present invention to provide a box unpacking method and a box unpacking device that can open the box by peeling off the adhesive surface of the box.

[0007]

In order to solve the above problems, the present invention provides a box body unpacking method for unpacking a box body in which an inner flap and an outer flap are glued, and a gap between a pair of outer flaps. After inserting the plate-like body along the outer flap from the above, by moving the plate-like body along the outer flap in the inner flap direction, the outer flap is peeled from the inner flap and the box body is formed. Decided to unpack.

The gap between the pair of outer flaps can be formed by pressing one outer flap. It can also be formed by sucking one outer flap.

In order to solve the above problems, the present invention provides a box unpacking device for unpacking a box body to which an inner flap and an outer flap are glued, a holding device for holding the box body, A plate-shaped body that separates the outer flap from the inner flap and a moving device that moves the plate-shaped body so as to pass between the inner flap and the outer flap are provided.

In this case, the plate-shaped body may be a spatula having a substantially triangular shape.

[0011]

[Function] After inserting the plate-like body along the outer flap through the gap between the pair of outer flaps, the plate-like body is moved along the outer flap in the direction of the inner flap, whereby the outer flap is separated from the inner flap. The box can be unpacked.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. Example 1 This box unpacking method and apparatus treats two boxes at the same time, but the flap peeling device and the discharging device will be described as treating one box (excluding drawings). ).

1 and 2, the box unpacking device M
Has a horizontal transfer conveyor 1 for sending a plurality of boxes, and an inclined transfer conveyor 2 provided adjacent to the horizontal transfer conveyor 1 for transferring the boxes diagonally upward. A peeling conveyor 20 is arranged on the downstream side of the inclined transporting conveyor 2, and a flap peeling device 3 for peeling a flap formed on the side surface in the longitudinal direction of the box is provided on the upstream side of the peeling conveyor 20. There is. Further, a discharge conveyor 54 is arranged on the downstream side of the peeling conveyor 20, and a peeling auxiliary device 4 for peeling the flap peeled by the flap peeling device 3 to a larger extent is provided on an upstream portion of the discharge conveyor 54. A discharge device 5 for the box body that has been largely peeled by the peeling auxiliary device 4 is arranged in the downstream portion. The contents stored in the box are discharged laterally by the discharging device 5. The inclined transport conveyor 2
Feeds the box body 10 into the flap peeling device 3 with a space.

As shown in FIG. 3, the box body has outer flaps f ₁ and f ₂ which are bent at right angles from the long sides of the side surfaces, and the inner surfaces of these flaps f ₁ and f ₂ are the short sides of the side surfaces. They are bonded by an adhesive to the outer surface of the flap f _3, f ₃ inner bended broken at right angles transversely inwardly from. Then, for example, canned beer C as the content is stored in the box 10.

Next, the details of the flap peeling device 3 will be described. The flap peeling device 3 has outer flap peeling devices 21 and 22 arranged in series.

The outer flap peeling device 21 is shown in FIG.
Outer flap f shown₂The inner flap f ₃, F₃Peel off from
The outer flap peeling device 22 is shown in FIG.
Outer flap f of 3₁The inner flap f₃, F₃Peel off from
It is for the purpose.

The outer flap peeling device 21 has a frame 23, and a cylinder 24 is vertically attached to one side surface of the conveyor 20 of the frame 23, and the cylinder 24 is connected to the cylinder 24 via links 26, 26. A pair of plate-like bodies 2
5, 25 are connected. The links 26, 26 and the plate-like bodies 25, 25 are connected to the horizontal frame 2 at pivot points P, P.
9 are pivotally attached to these links 26, 26 and the plate-like body 2.
The joint ends of the plates 5, 25 are fixed so as to have a predetermined angle.
The tip of 25 is inserted into the gap S formed between the outer flap f ₁ and the contents shown in FIG.
5,25 and the inner flaps f _3, f ₃ moves in the traveling direction back and forth direction of the box 10 solves the joining of both ends bonded portion of the outer flap f _2. At this time, the outer flap f ₂ is bent outward by the suction cup 34 a provided so as to face the central portion of the outer flap f _{2, so} that the plate-like bodies 25, 25 are formed between the contents and the outer flap f _2. A gap S to be inserted is formed. The both suction cups 34a are the support members 1
The support member 100a is attached to the inside of the box 00a and can be brought into contact with and separated from the side surface of the box body 10 by the cylinder 33a.

On the other hand, a pressing plate 30 is provided on the opposite side of the box body from which the suction cup 34a is provided.
The tip of a cylinder 31 is connected to the central portion of 0, and guide members 32, 32 are provided on both sides of the cylinder 31. The guide plate 32, 32 guides the pressing plate 30 to and from the side surface of the box body. Exercise is done. The pressing plate 30 is for pressing the side surfaces of two juxtaposed boxes so as to contact the positioning plate 51 shown in FIG. 6, and presses the box 10 against the positioning plate 51 from the opposite side. By pressing with the plate 30, the box 10 is positioned in the direction perpendicular to the traveling direction.

On the other hand, the horizontal frames 40a, 40 are arranged in a zigzag pattern in the substantially central portion of the frame 23 in the height direction.
b is provided, and the horizontal frames 40a and 40b are provided with a holding device for holding the box body. That is, in the horizontal frames 40a and 40b, the cylinder 35
a, 35b are attached to the cylinders 35a, 35b
Stoppers 36a and 36b are attached to the tips of the respective. The stopper 36a is provided on the downstream side of the stopper 36b, and the front end of the box body 10 conveyed without stopping the peeling conveyor 20 is first provided on the downstream side of the stopper 36a.
Then, the stopper 36b on the upstream side operates and the two boxes 1 are inserted between the stoppers 36a and 36b.
Hold 0 and 10. These two stoppers 36a, 3
6b, the pressing plate 30 and the positioning plate 51 provided so as to face the pressing plate 30 ensure that the two boxes 10, 10 are positioned, whereby the plate-shaped members 25, 2
5 will be reliably inserted into the gap S formed between the contents and the outer flap f ₂ .

The outer flap peeling device 22 arranged in series with the outer flap peeling device 21 has substantially the same structure as the outer flap peeling device 21. Therefore,
Although not described in detail, the outer flap peeling device 22
In order to separate the outer flap f ₁ of FIG.
Stoppers 36a and 36b for positioning the downstream end and the upstream end of 0 are operated by cylinders 35a and 35b attached to the upper end of the frame 23. The mounting position of the suction cups 34b for sucking the outer flaps f ₁ is provided above the mounting position of the suction cups 34a of the outer flap peeling device 21, it is supported by the suction cup 34b supporting member 100b . In the outer flap peeling devices 21 and 22, there are portions where the respective constituent members have different mounting positional relationships, but the functions of the respective constituent members are exactly the same.

Next, the operation of the box unpacking device of this embodiment will be described. A plurality of boxes 10 are successively supplied from the end of the horizontal conveyor 1, and the boxes 10 conveyed by the horizontal conveyor 1 are then slightly raised in height by the inclined conveyors 2. The box body 10 is fed onto the peeling conveyor 20 of the flap peeling device 3 from the inclined transporting conveyor 2 at a distance. The fed box body 10 is first supplied into the outer flap peeling device 21. At this time, the downstream stopper 36a serving as the holding device faces downward, the front side surface of the downstream box 10 is stopped by this stopper 36a, and then the upstream stopper 36b moves downward to convey the box 10. Positioning in the direction is performed. Then, the pressing cylinder 3
1, the pressing plate 30 is brought into contact with the lateral side surfaces of the two box bodies 10, 10 and the opposite side surface thereof is brought into contact with the positioning plate 51 to position the two box bodies 10, 10 in the direction perpendicular to the traveling direction. Is performed. Then, a gap S between the suction cups 34a central portion outside the curved outward flap f ₂ and the contents of the outer flaps f ₂ of the box body 10 suction cylinder 33a is operated. By operating the cylinder 24 in this state, the plate-like bodies 25, 25 are inserted into the gap S, and the plate-like bodies 25, 25 are moved along the front-rear direction of the transportation of the box body 10, so that the outer flap f _{The two} sides of ₂ and the inner flaps f ₃ and f ₃ adhered to the both sides are separated. In this way, the two placed along the transport direction
When two adjacent boxes 10 and 10 are processed at the same time, and thus the outer flap f ₂ is separated from the inner flaps f ₃ and f _{3, the} stoppers 36a and 36b are actuated and the tip of the box 10 on the downstream side is actuated. Open the sides. Next, the pressing plate 31 is contracted to separate the pressing plate 30 from the lateral side surface of the box body 10. Therefore, the two boxes are free and are supplied into the outer flap peeling device 22 by the peeling conveyor 20 which is always operating. In the outer flap peeling device 22, first, the boxes 36 are stopped by the stoppers 36a and 36b and positioned in the carrying direction, and the action of the pressing cylinder 31 and the pressing plate 30 and the positioning in the traveling right direction are performed by the positioning plate 51. Then, the suction cup 34b operates and the outer flap f
The plate-like body 2 in the gap S between the outer flaps f ₁ and the contents formed by this is curved central portion of _one outward
5 and 25 are inserted and moved, and the inner flap f ₃ ,
The outer flap f ₁ is peeled off from f ₃ .

After the outer flap and the outer flap are peeled off in this manner, the two boxes 10, 10 are fed into the peeling auxiliary device 4 as required. After this, the box 10
Is supplied to the next discharge device 5, and the contents C stored in the box are taken out of the box.

Embodiment 2 As shown in FIG. 7, the box unpacking device N has a horizontal conveyor 77 for feeding a plurality of boxes 10.

An outer flap peeling device 78 for peeling the outer flaps f ₁ and f ₁ out of the flaps on both sides in the longitudinal direction of the box 10 from the upstream portion to the downstream portion of the horizontal conveyor 77, the outer flap. f _2, f ₂ outer flap peeling device 79 for peeling the flap f ₁ the upper and lower peeled by the upper outer flap peeling apparatus 78, 79, f _1,
Flap bending plates 80, 80 for further peeling and expanding f ₂ and f ₂ and a discharging device 103 for pushing out a large number of cans as the contents C from the box body 10 are arranged.

The horizontal conveyor 77 is designed to be driven intermittently so that the boxes 10 ... Can be moved in one direction at regular intervals. Further, guide bars for guiding the box 10 are provided on both sides along the transport path (not shown).

Since the box 10 and its contents C are the same as those in the first embodiment, the description thereof will be omitted. The outer flap peeling device 78 includes outer flaps f ₁ and f _1.
Is for peeling from the inner flaps f ₃ , f ₃ , f ₃ , f ₃ .

The outer flap peeling device 78 is provided as a holding device for holding the box 10 on the horizontal conveyor 77, and is provided with a pair of stoppers 81 and 81 which are opposed to each other along the flow direction of the conveyor 77. There is. Both stoppers 8
1, 81 are rotatably supported by the frame of the outer flap peeling device 78 via horizontal shafts 83, 83, respectively, and are vertically rotated by a cylinder as in the first embodiment.

The outer flap peeling device 78 is provided with piercing bodies 82 and 82 for piercing the outer flaps f ₁ and f ₁ on both sides of the box body 10 sandwiched by the stoppers 81 and 81 near the bases thereof. ing. Both piercing bodies 82, 82 are
It is arranged on both sides of the horizontal conveyor 77 so as to face each other.

The piercing bodies 82, 82 are cylinders 8 mounted vertically on the frame of the outer flap peeling device 78.
Blocks 86 and 8 at the lower ends of rods 85 and 85 of 4,84
6 is held downward. Also, the piercing bodies 82, 8
2, as shown in FIG. 16, in parallel to pivot the folding line of the base of the outer flaps f _1, f ₁ with respect to block 86, pulling in the direction of the outer flaps f _1, f ₁ is closed coil The protrusions 8 are biased by the springs 87, 87.
8 is fixed to a lever 89 whose position is regulated by hitting the blocks 86, 86. When the lever 89 descends, the lever 89 comes into contact with a dog 90 fixed to a frame portion near the box 10 to rotate.

The piercing bodies 82, 82 are arranged according to the number of rows of the contents C in the box body 10, and are designed to be inserted into the spaces between the rows so as not to damage the contents C at the time of piercing. There is. Further, when the contents C are in an odd number of rows, two piercing bodies 82a, 82a may be provided in parallel as shown in FIG.

Further, the outer flap peeling device 78 is shown in FIG.
As shown in FIG. ₆ , a plate-like body 91 is provided for peeling the outer flaps f ₁ and f ₁ on both sides of the box body 10 sandwiched by the stoppers 81 and 81 from the inner flaps f ₃ and f _3. There is. The plate-like members 91 ... Have a spatula shape as shown in FIG. 7, and are installed on both sides of the conveyor 77 so as to face each other. In addition, these plate-like members 91 ...
Is a pivot 93 ...
.. as a fulcrum, and as shown in FIG. 7, within the gap S formed between the outer flaps f ₁ and f ₁ and the contents C by moving from the solid line position to the chain line position. The outer flaps f ₁ , f ₁ and the inner flaps f ₃ , f ₃ , f
Unbond the joints at both ends with ₃ and f ₃ .

The outer flap peeling device 79 arranged in series with the outer flap peeling device 78 has substantially the same structure as the outer flap peeling device 78. Therefore, although detailed description is omitted, in the outer flap peeling device 79, the piercing bodies 92, 92 are designed to move from the lower side to the upper side, and the outer flaps f ₂ , f ₂ are peeled off. The plate-shaped members 94, 94 are moved downward from above with a pivot 95. Also,
The stoppers 104, 104 are similarly provided.

In the upper and outer flap peeling devices 78 and 79, there are portions in which the respective components have different mounting positions, but the actions of the respective components are exactly the same.

The flap folding plates 80, 80 are provided on the conveyor 7
7 are arranged on both sides. These are horizontal isosceles
An outer flap f of the box body 10 that has a rectangular shape₁, F₁Up
Upper slope for bending and outer flap f₂Fold down
And a lower sloping surface for bending. This makes the box
When the body 10 moves, outer flaps on both sides of the box body 10
f ₁, F₁And outer flap f₂, F₂Is bent up and down
Will be. Then, the box body 10 in that state is a discharging device.
103 will be reached.

As shown in FIG. 7, the discharging device 103 has a frame 96 extending in a direction orthogonal to the carrying direction of the horizontal carrying conveyor 77. This frame 9
6, stoppers 115, 115 are provided in the same manner as in the upper outer flap peeling devices 78, 79. A rodless cylinder 9 is provided along the direction perpendicular to the carrying direction.
7 is fixed, and a pusher 99 capable of penetrating the box body 10 from one opening to the other opening according to its movement is fixed to the movable portion of the cylinder 97.

Further, the horizontal plate 10 for receiving the contents C on the side opposite to the pusher 99 with the horizontal conveyer 77 interposed therebetween.
1 and a carry-out conveyor 102 subsequent thereto are installed. The contents C in the box body 10 are pushed out of the box body 10 by the forward movement of the pusher 99, and move onto the horizontal plate 101 and the carry-out conveyor 102.

Next, the operation of the box unpacking device N of this embodiment will be described. A plurality of boxes 10 ... Are successively supplied from the end of the horizontal conveyor 77, and the horizontal conveyor 77 intermittently conveys the boxes 10 at regular intervals.

Each box 10 on the horizontal conveyor 77 ...
· When reaching the outer flap peeling device 78, the stopper 8
1, 81 rotate downward to hold the box 10 and position it.

Next, the cylinders 84, 84 are operated to lower the piercing bodies 82, 82. As shown in FIGS. 8, 10 and 11 (a), the piercing bodies 82, 82 have outer flaps f ₁ ,
It is pierced in the vicinity of the base portion of f ₁ and then, as the lever 89 hits the dog 90 and rotates, it pushes outwardly of the box body 10 to incline the outer flaps f ₁ , f ₁ outwardly.

For this reason, the outer flaps f ₁ and f ₁ are pushed open slightly, and gaps S and S are formed. When the gap S is formed, the plate-like bodies 91 ... Move into the gaps and the outer flaps f ₁ and f ₁ are adhered to both sides of the inner flap f.
Separate from ₃ , f ₃ , f ₃ , and f ₃ .

When this peeling process is completed, the stoppers 81, 8
1 and the like return to their original positions and release the box 10. When released, the horizontal conveyor 77 is intermittently driven to convey the box 10 to the next outer flap peeling device 79.

Also in the outer flap peeling device 79, the stoppers 104, 104 etc. first position the box body 10, and then the piercing bodies 92, 92 make the outer flap f ₂ ,
It sticks in the vicinity of the base portion of f ₂ and is inclined outward to form voids at the positions of the outer flaps f ₂ , f ₂ .

Then, the plate-like members 94 ... Move downward.
And then the inner flap f₃, F₃Outside flap f₂, F₂To
Peel off. In this way, the outer flap f₁, F₁When
Outer flap f₂, F₂When the paper is peeled off,
The conveyor 77 is driven to send the box 10 to the ejector 103.
Put in. During this feeding, the flap folding plates 80, 80
Top and bottom flaps f₁, F₁, F ₂, F₂Respectively up and down
Open it.

When the box body 10 is supplied into the discharging device 103, the stoppers 115, 115 first rotate downward to position the box body 10. After positioning, presser member 11
7 projects and presses the outer flap f ₂ against the frame 96. Next, the rodless cylinder 97 operates, and the pusher 99 moves toward the box body 10 to push the contents C onto the carry-out conveyor 102.

The contents C are sent to a predetermined location by the carry-out conveyor 102, while the empty box body 10 is discharged outside the machine as shown in FIG. In the second embodiment, the endless body of the horizontal conveyor 77 is provided with protrusions for holding the boxes 10 at regular intervals, and the stoppers 81,
81, 104, 104, 115, 115 and their driving units may be omitted.

[0046]

Since the present invention is constructed as described above, the contents can be taken out by simply opening the flap of the box body. Therefore, it is not necessary to partially cut the box body, and the periphery of the device is not contaminated by the cut pieces of the box body.

Further, since the plate-like body is moved along the outer flap in the inner flap direction, the outer flap is peeled off from the inner flap without damaging the articles stored in the box body. Can be unpacked.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of a box unpacking device according to the present invention.

FIG. 2 is a side view of the box unpacking device.

FIG. 3 is a perspective view showing a state where the outer flap of the box body is sucked.

FIG. 4 is a plan view of the flap peeling device.

5 is a side view seen from the direction V in FIG. 1. FIG.

6 is a sectional view taken along line VI-VI in FIG.

FIG. 7 is a perspective view of another embodiment of the wrap round box unpacking device according to the present invention.

FIG. 8 is a side view of a main part of an outer flap peeling device for forming a gap S in the outer flap.

FIG. 9 is a rear view of the outer flap peeling device.

FIG. 10 is a perspective view for explaining an operation of piercing the box body with the piercing body.

11 is a cross-sectional view taken along line XI-XI in FIG. 10, in which FIG. 11 (a) is a diagram showing a puncture and FIG. 11 (b) is a diagram showing an outer flap being pushed.

FIG. 12 is a perspective view when two piercing bodies are arranged side by side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Horizontal conveyer 2 ... Inclined conveyer 3 ... Flap peeling device 4 ... Peeling auxiliary device 5 ... Ejection device 10 ... Box body 21 ... Outer flap peeling device 22 ... Outer flap peeling device 25 ... Plate-like body 78 ... Outer flap peeling Device 79 ... Outer flap peeling device 82 ... Puncture body C ... Contents

Claims (5)

[Claims] 1. A box unpacking method for unpacking a box body in which an inner flap and an outer flap are glued, after a plate-like body is inserted along the outer flap from a gap between a pair of outer flaps, By moving the plate-shaped body along the outer flap in the inner flap direction, the outer flap is peeled from the inner flap and the box is unpacked. . 2. The box unpacking method according to claim 1, wherein the gap between the pair of outer flaps is formed by pressing one outer flap. 3. The method for unpacking a box according to claim 1, wherein the gap between the pair of outer flaps is formed by sucking one outer flap. 4. A box unpacking device for unpacking a box body in which an inner flap and an outer flap are glued, a holding device for holding the box body, and a plate for peeling the outer flap from the inner flap. An unpacking device for a box body, comprising: a sheet body; and a moving device that moves the plate body so as to pass between the inner flap and the outer flap. 5. The box unpacking device according to claim 4, wherein the plate-shaped body is a spatula having a substantially triangular shape.