JP2002059494A - Apparatus for forming box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for forming a box capable of forming a flat box having a high dimensional accuracy. SOLUTION: The apparatus 30 for forming the box folds a blank S1 sent from a sheet feeder A to a molding unit B by folding an end face panel and a side face panel continuously connected to two panels of an intermediate part of the blank S1 at substantially 90 deg. upward, and forming the blank in a recess shape. The apparatus 30 then presses the recess-shaped blank S at its rear end by a pressing member 42 of a conveyor 40, sends the blank S1 to a box forming unit C, folds the blank S1 by folding the end face panel and the side face panel of an erected state at substantially 90 deg. inward by the forming unit C, positions the blank S1 in a slope correcting unit 50 before forming the flat box, and enhances an accuracy at the folding time of the respective panels.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box forming apparatus for forming a box folded flat from a blank as a box forming material.

[0002]

2. Description of the Related Art A blank shown in FIG. 13 is known as a blank for forming a cardboard box. The blank S ₁ is a forming blank cardboard box with middle partition, end face panel P ₁ to form a rectangular tubular body part of the box, side panels P _2, the end face panel P _3, side panel P
₄ and the end panel P ₅ are provided continuously in one direction through the first vertical lines a ₁ to fourth vertical lines a _4, 5 vertical lines a ₅ the edge of the end face panels P ₅ located at one end partition panel P ₆ are continuously provided, connecting pieces P ₇ on the edge of the partition panel P ₆ via a sixth vertical lines a ₆ is connected via a.

Here, a first vertical ruled line a ₁ and a second vertical ruled line a ₂
Width, the third vertical line a ₃ and the fourth vertical ruled line a ₄ to the width and fifth vertical lines a ₅ side panels P ₄ between the sixth vertical lines a ₆ side panels P ₂ between the Partition panel P between
The width dimension of ₆ is almost the same.

Further, inner flaps f ₁ , f ₂ are respectively provided on both side edges of each end panel P ₁ , P ₃ , P ₅ via horizontal ruled lines b ₁ , b _{2. 2} , P ₄
The outer flap f ₃ and the inner flap f _2, which form the bottom wall of the box with the inner flap f ₁ , on both side edges of the inner flap f ₁
Outer flaps f ₄ which forms a lid to become part of the box are each continuously provided via a horizontal ruled b _1, b ₂ between.

[0005] The blank S as described above₁Is a flat box
And shipped to the customer. Forming that flat box
At the time, the blank S₁To the fourth vertical ruled line a_Fouralong
One end is bent at almost 180 °
End panel P_ThreeConnecting piece P overlapping₇The end panel
Le P_ThreeGlue to Then, the second vertical ruled line a_TwoAlong
Rank S₁Of the other end is bent by almost 180 °, this bending
By end panel P ₁End bent first
Panel P_FiveAnd glue the overlapping parts together
And a flat box S shown in FIG._TwoTo form

[0006] At the customer, the flat box S
₂ is opened in the shape of a square tube to form the body of the box, and the inner flap f ₁
The inwardly after bending 90 ° folding, the outer flaps f ₃ inwardly 90 ° bending, the bottom wall is formed by adhering the overlapping portions of the inner flaps f ₁ and the outer flap f ₃ by the bending ,
So that packed goods therein 2 minutes dough portion by the partition panel P _6. After the product is packed, the inner flap f ₂ and the outer flap f ₄ are moved inward by 90 degrees.
° Folds to form a lid.

[0007] As a forming apparatus of a box to form a flat box S ₂ shown in FIG. 14 from the blank S ₁ shown in FIG. 13, the inner flaps f ₁ and the outer flap f ₃ is transported as the front of the blank S _1, the end face panel P ₅ and the side panels P ₂ by a guide extending in the transport direction during the fast transfer fourth
Respectively along the vertical line a ₄ and second vertical lines a ₂ 18
0 ° progressively bent until, connecting pieces P ₇ and the end face panel P ₃ and the end face panel P ₅ and the end face panel P ₁ by the bending
Conventionally, there is known a forming apparatus in which the respective overlapping portions are bonded with an adhesive applied in advance.

[0008]

The blank S
_In the forming apparatus that forms a flat box while transferring ₁ , the end panel P ₅ and the side panel P ₂ can be bent with high precision along the fourth vertical ruled line a ₄ and the second vertical ruled line a _2. 180 ° bent end panel P ₅
And the side panel P ₂ is as shown in FIG. 16, which is often adhered at relatively inclined state, there is a disadvantage that a high incidence of defective products.

It is an object of the present invention to provide a box forming apparatus capable of forming a flat box with high dimensional accuracy.

[0010]

In order to solve the above-mentioned problems, according to the present invention, there is provided a box in which at least four panels forming a quadrangular cylindrical body of the box are continuously provided via vertical ruled lines. A sheet feeding device for feeding a forming blank one by one toward a forming unit, and a panel at both ends connected to both ends of two panels at an intermediate portion of the blank fed into the forming unit via vertical ruled lines; And a forming device that raises the blank approximately 90 ° upward to form the blank into a concave shape, and a box forming portion provided on the downstream side of the forming portion by pressing the rear end on the upstream side of the concave blank with a pressing member. A conveying device that conveys, and a tilt correction device that corrects the inclination of the concave blank by pressing the downstream end of the concave blank conveyed to the box forming unit and pressing the upstream rear end against a pressing member of the conveying device. And the inclination is corrected in the box forming section. Bent approximately 90 ° fold the upstanding panels inwardly concave blank is had adopted a structure comprising a forming apparatus for forming a flat box body by bonding the ends overlapping each other.

As described above, the concave blank formed into the concave shape in the forming section is pressed by the pressing member provided on the conveying device to the rear end on the upstream side, and is sent to the box forming section, and is sent to the box forming section. By pressing the downstream end of the concave blank and pressing the upstream rear end against the pressing member by the provided tilt correcting device, the tilt of the concave blank is corrected with high accuracy. In the tilt corrected state, the pair of panels in the upright state of the concave blank are moved inward by approximately 90 degrees by the forming apparatus.
By bending, a pair of panels can be bent very accurately, and a flat box with dimensional accuracy can be formed.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a box forming apparatus for forming a flat box body from a blank S ₁ shown in FIG. 13. The box forming apparatus includes a sheet feeding section A, a forming section B, and a box forming section C.

[0013] a plurality of roller conveyors 1 for supporting the pile blank S ₀ which is piled by aligning the outer periphery of the blank S ₁ is the paper feeding section A, the pile blank S ₀ is placed on the roller conveyor 1 one A side plate 2 for positioning the end face is provided. Moreover, a belt conveyor 3 is provided between the roller conveyors 1, pile sheet S ₀ by the belt conveyor 3 is conveyed to the downstream side.

On one side of the discharge end of the belt conveyor 3, a positioning member 4 is provided.
The front of the pile blank S ₀ is positioned by abutment against.

The pile of blanks S ₀ positioned by the positioning member 4 is fed to the sheet feeding device 1
By 0, the sheets are conveyed one by one from the top to the downstream side.

The sheet feeding device 10 is composed of a suction transporting device 11 for adsorbing and conveying the blank S _1, feed device 12 for sending a blank S ₁ sent by the suction transfer device 11 on the downstream side in the molding unit B .

As shown in FIGS. 3 to 5, the suction transfer device 11 is movably supported along two guide rods 13 arranged in parallel, and is reciprocated by a rodless cylinder 14. A lift cylinder 16 is mounted on the base 15, and a suction cup support 17 which is moved up and down by the lift cylinder 16 is arranged below the carriage 15, and a plurality of suction cups 18 are mounted on the suction cup support 17.

The suction transfer device 11 includes a lifting cylinder 16
When the sucker 18 sucks the uppermost blank S ₁ of the piled blanks S ₀ , the suction support 17 is raised to lift _one blank S ₁ , and the rodless cylinder 14 is moved. the carriage 15 is moved to the downstream side by the operation of, so that fed on the feed end of the adsorbed blank S ₁ the feeding device 12 with a sucker 18.

The feeding device 12 includes two fixed roller conveyors 19 arranged in parallel, and each fixed roller conveyor 19.
And a movable roller conveyor 20 provided thereon. Each movable roller conveyor 20 is moved up and down by an elevating cylinder 21.

The feeding device 12 supports the leading end of the blank S ₁ sent by the suction carrying device 11 on the downstream side by a fixed roller conveyor 19, and holds the leading end of the blank S ₁ by the operation of the elevating cylinder 21. Each of the rollers 19 of the fixed roller conveyor 19 is sandwiched from above and below by a movable roller conveyor 20 and a fixed roller conveyor 19 which are moved down.
and to send the blank S ₁ on the downstream side in the forming section B by the rotation of a. For transporting the blank S ₁ stably good, as shown in FIG. 2, so as to guide the opposite ends of the blank S ₁ by a pair of guide rails 22.

It should be noted that the feeding device 12 controls the blank S _1.
Is removed from the suction cup 18, the carriage 15 is retracted by the operation of the rodless cylinder 14. When the carriage 15 is retracted to a predetermined position and stopped, the suction cup support 17 is lowered and the uppermost blank S of the pile of blanks S ₀ is stacked. Adsorb ₁ Since then
The operation is repeated for the blank S ₁ of piled blanks S ₀ is fed to the molding section B successively one by one from the top.

As shown in FIG. 1, the molding unit B, the molding device 30 for molding the concave bent substantially 90 ° fold in the upward direction both end portions of the blank S ₁ sent from the paper feed unit A is Is provided.

As shown in FIG. 6, the forming apparatus 30 comprises a pair of left and right bending guides 31, 31, a pair of left and right guide rails 32 provided below each of the bending guides 31, and a pair of left and right bending guides. a table device 33 provided between the guide 31, consisting of pressing device 34 for pressing down the blank S ₁ having both ends supported by the pair of guide rails 22.

The pair of folding guides 31 has a support surface 31a that faces the lower surface of the blank S ₁ at the top, the inclined surface 31b is provided continuously to the inner end of the support surface 31a, the inclined surfaces A substantially vertical flat surface 31c is formed continuously from the lower end of 31b. This pair of bending guides 3
1, 31 is reciprocated in the longitudinal direction of the blank S ₁ (the width direction of the apparatus) by the cylinder 35. In its retracted stop position, so that the flat surface 31c is positioned in the second vertical ruled a ₂ and a 4 vertical ruled line a ₄ position corresponding to each of the blank S ₁ which is supported on the guide rail 22.

The pair of left and right guide rails 32, generally vertical panel guide surface 32b on the outside of the supporting surface 32a for supporting the lower surface of the blank S ₁ is provided. The pair of left and right guide rails 32 extend toward the box forming portion C as shown in FIG.

The table device 33 includes a roller table 36.
And a lifting cylinder 37 for raising and lowering the roller table 36.

The pressing device 34 supports a lifting cylinder 38 by a cylinder frame F provided above the blank S ₁ , and the lifting cylinder 38 is disposed below the cylinder frame F.
The push-down member 39 which is moved up and down by is provided.

When the pressing member 39 is lowered, the pressing member 39 moves as shown in FIG.
A second vertical lines a ₂ blank S ₁ shown in (I) is adapted to depress the portion between the fourth vertical line a _4.

Now, when the blank S ₁ is sent from the feeding device 12 of the paper feeding device 10 to the forming section B and stopped, the pressing member 39 of the pressing device 34 is lowered by the operation of the lifting cylinder 38, and the blank S ₁ is moved. depressing the second vertical ruled a ₂ and the fourth vertical line a end face panel P ₃ and side panels P ₄ between _4.

At almost the same time as the depression, the table device 3
The roller table 36 in 3 is lowered by the operation of the lifting cylinder 37. Therefore, the blank S ₁ descends while being sandwiched between the roller table 36 and the pressing member 39, and is brought into contact with the pair of left and right bending guides 31 so as to be in the second position.
Both end portions along the vertical line a ₂ and a 4 vertical lines a ₄ is raised upward.

[0031] The the blank S ₁ is pressed down to a position that is received by the supporting surface 32a of the guide rail 32, and the end face panel P ₁ and the end surface panel P ₅ that continuously provided to the side panel P ₂ of the blank S ₁ thereto The continuous partition panel P ₆ is turned up by approximately 90 ° in the upward direction, so that the blank S ₁ is in a concave molded state as shown in FIG. 11 (II) and the panel guide surface formed on the guide rail 32. 32b keeps it in a concave molding state.

When the blank S ₁ is formed into a concave shape, the bending guide 31 advances by the operation of the cylinder 35. The side panel P ₂ and the end panel P ₅ is pressed by the advance, each panel P _2, P ₅ is slightly collapsed inwardly as shown in FIG. 7, the blank S ₁ and the second vertical line a ₂ and a 4 Vertical habit bent at the bent position of the ruled line a ₄ are attached, a side panel P ₂ and the end panels P ₅ of upright state from falling outwardly can be prevented. Figure 11 (III) side panel of the blank S ₁ which is formed in a concave P ₂ and the end panels P
₅ indicates a state in which it is slightly tilted inward.

As shown in FIG. 6, the blank S ₁ formed into a concave shape is transported to a box forming section C on the downstream side by a transport device 40 provided below the blank S ₁ .

The transport device 40 is provided in parallel with a pair of chain conveyor 41, mounted a plurality of the pressing member 42 at equal intervals in the chain 41a of the chain conveyor 41, upstream of the concave blank S ₁ in the pressing member 42 rear and presses the are to move constant stroke intermittently toward the concave blank S ₁ into the box forming part C.

As shown in FIG. 1, an adhesive coating device 43 is provided on the transfer path of the concave blank S ₁ from the forming section B to the box forming section C. When the coating apparatus 43 passing through the downward concave blank S _1, concave blank S
It is adapted to apply adhesive to the upper central portion of the end face panel P ₃ which substantially horizontally maintained in _1.

The box-defining portion C and the first forming part C _1, consists second forming portion C ₂ Metropolitan provided on the downstream side, a concave blank S ₁ being transported by the transport device 40, the first is sent to the forming section C _1, it is sent from the first forming unit C ₁ to the second forming unit C _2. Therefore to stabilize the transfer of concave blank S _1, between a pair of chain conveyor 41 is provided with a roller conveyor 44 the length of which extends from the first forming unit C ₁ to the second forming unit C _2.

Here, the transport device 40 is a concave blank S _1.
The when conveying intermittently, concave blank S ₁ when the stop concave blank S ₁ is moved by inertia, the guide rails 32
May occur within the range of the gap formed between the two. To correct the inclination is provided an inclination correction device 50 for correcting the inclination of the concave blank S ₁ to the first forming section C ₁ and the second forming portion C _2.

As shown in FIG. 8 (I), the inclination correcting device 5
0, a stopper 51 provided on the front side (downstream side) of the stop position concave blank S _1, reciprocating cylinder is moved back and forth the stopper 51 in the moving direction of the concave blank S ₁ 5
And 2, the reciprocating cylinder 52 is moved up and down, consists of lifting cylinders 53 retract downwardly the stopper 51 from the transfer path of the concave blank S ₁ during lowering. here,
The number of the stoppers 51 is arbitrary. If with one of their number, employing a large stopper 51 of the long width dimension in a direction perpendicular to the moving direction of the concave blank S _1. When a plurality of stoppers 51 are provided, the plurality of stoppers 51
The to be provided at intervals in the direction orthogonal to the moving direction of the concave blank S _1.

[0039] In the inclination correcting device 50, concave stoppers 51 and lifting cylinders 53 are actuated just before the stop concave blank S ₁ is sent to the first forming section C ₁ and the second forming portion C ₂ to face the transport path in the form blank S _1. When concave blank S ₁ is stopped, and actuated reciprocating cylinder 52, the stopper 51 is retracted movement, the stopper 51
Accordingly, to press the downstream side of the front end of the concave blank S _1, so as to correct the inclination of the concave blank S ₁ is pressed against the upstream side of the rear end of the concave blank S ₁ to the pressing member 42 of the conveying device 40 ing.

As shown in FIGS. 1 and 2, the box forming portion C
The end panel P in the upright state of the concave blank S _1
5 and forming apparatus 60 inwardly the side panel P ₂ are bent approximately 90 ° fold to form a flat box S ₂ is provided.

In the first forming section C ₁ , the forming apparatus 60 bends the end face panel P _{5 on} which the concave blank S ₁ stands up by approximately 90 ° inward, thereby forming the end face panel P ₅ and the end face panel P _{5. A} first folding device 61 for superimposing a partition panel P ₆ and a connecting piece P ₇ connected to ₅ on an end face panel P ₃ and a side panel P ₄ held substantially horizontally;
When the first folding device 61 that is folding the end face panel P _5, a guide device 80 for guiding the partition panel P _6, the first press device 62 for pressing the connecting piece P ₇ on the inner direction thereof is bent , bent approximately 90 ° fold the side panel P ₂ of upright inwardly in the second forming portion C _2, were bent end portion of the side panel P ₂ to be provided continuously end faces the panel P ₁ above a second folding device 63 for superimposing the ends of the end face panels P _5, comprising an end panel P ₁ which is bent inward from the second press device 64. for pressing.

[0042] As shown in FIG. 9 (I), the first folding device 61, the Orikyokuban 65 provided on the outside of the concave blank S ₁ of held in upright end faces the panel P _5, the folding Board 65
Is fixed to a shaft 67 rotatably supported by a support piece 66, one end of a lever 68 is fixed to the shaft 67, and a swing cylinder 69 is connected to the other end of the lever 68. The bending plate 65 is swung inward about the shaft 67 by the operation of the moving cylinder 69 so that the end panel P ₅ , the partition panel P _6, and the connecting piece P ₇ , which are continuously provided in an upright state, are substantially horizontally. It is held so that bent to a position overlapping the upper surface of the side panels P ₄ and the end panel P ₃ are continuously provided.

The guide device 80, as shown in FIGS. 8 and 9, when the dividing panel P ₆ with the end face panel P ₅ is folded inwardly, a guide plate 81 for guiding the side edges of the dividing panels , connect the cylinder 82 to the guide plate 81, before being bent inwardly said end face panel P _5, those guide plates 81 by the operation of the cylinder 82 to the side panel P ₄ whose lower end is horizontally held It descends to the position where it touches.

The first press unit 62 is provided with a pressing member 70 above the connecting pieces P ₇ which inwardly bent fold, the press member 70 is moved up and down by the elevating cylinder 71, a connection piece P ₇ during descent Pressing is performed.

[0045] Now, concave blank S ₁ is fed from the forming section B in the first forming unit C _1, is pressed against the pressing member 42 that concave blank S ₁ is the operation of the inclination correcting device 50 shown in FIG. 8 When the inclination is corrected, the cylinder 82 of the guide device 80 operates to lower the guide plate 81. The lower end of the guide plate 81 is approximately 90 ° swinging inwardly the bent plate 65 by swing cylinder 69 of the first folding device 61 is stopped in contact with the upper surface of the side panels P ₄ is activated. As shown in FIG. 9 (II), the end panel P ₅ , the partition panel P _6, and the connecting piece P _7, which are continuously provided in an upright state by the swing of the bending plate 65, are almost 90 ° inward.
Bendable.

[0046] Here, when folding the end face panel P _5, since concave blank S ₁ is that is fixed inclination by the inclination correction device 50, always a proper position is pressed by the end face panel P ₅ is Orikyokuban 65 Will be done. When the end panel P ₅ is bent, the side edges of the partition panel P ₆ connected to the end panel P ₅ are guided by the guide plate 81. Therefore, the end face panel P ₅ fourth vertical lines a
Can be bent with very high precision along ₄ .

[0047] After bending the end face panel P _5, the cylinder 82
Operates to raise the guide plate 81. Further, the elevating cylinder 71 of the first press device 62 operates to lower the press member 70. The connection piece P ₇ which is bent inward by lowering the press member 70 is pressed. At this time, since the pre-adhesive material by a coating apparatus 43 shown in FIG. 1 in a position in which the connecting pieces P ₇ is overlaid on the upper surface of the end face panel P ₃ which is substantially horizontally held is applied, the connection piece P ₇ is adhered to an end face panel P _3, as shown in FIG. 11 (IV), the blank S ₁ is the L form.

[0048] After adhesion of the connecting piece P _7, the press member 70 is raised, whereas, bent plate 65 is returned to the upright standby position shown in FIG. 9 (I).

Blank S formed in L-shape₁Is the transport equipment
By the operation of the device 40, the first forming portion C ₁To the second forming part C
_TwoTransported to In the transport path, as shown in FIG.
An adhesive application device 72 is provided. This coating device
72 is a blank S underneath. ₁When passing, inward
End panel P bent_FiveApply adhesive to the top edge of the
It is designed to be clothed.

As shown in FIG. 10 (I), the second bending device 63 provided in the second forming portion C ₂ is provided on the outer side of the side panel P ₂ held in the upright state of the L-shaped blank S _1. Is provided with a bending plate 73, and the lower end of the bending plate 73 is
4 and is fixed to a rotatable shaft 75 supported by the shaft 75.
, A swinging cylinder 77 is connected to the other end of the lever 76, and the swinging cylinder 77 is
Causes the bent plate 73 to swing inward by approximately 90 °, and the upright side panel P ₂ is moved to the side panel P _2.
End of consecutively end faces the panel P ₁ is as folding to a position overlapping the end of the folded end face panel P ₅ forward to.

The second press device 64, the pressing member 78 provided above the end face panel P ₁ which is bent inward, the pressing member 78 is moved up and down by the elevating cylinder 79, the end face panel P ₁ during lowering The end is pressed.

Now, from the first forming part C ₁ to the second forming part C ₂
L-shaped blank S ₁ is sent to the
_{When 1} is pressed and positioned by the pressing member 42 by the operation of the inclination correcting device 50 shown in FIG. 8, the swinging cylinder 77 of the second bending device 63 is operated to move the bent plate 73 inward approximately 90 degrees. ° Swing. Side panel P ₂ and the end face panel P _1, which is continuously provided in the standing state by the swinging of the bent plate 73, as shown in FIG. 10 (II), it is bent approximately 90 ° fold inward.

When the side panel P ₂ is bent, the L-shaped blank S ₁ is positioned by the inclination correcting device 50, so that an appropriate position of the side panel P ₂ is always pressed by the bent plate 73. . Therefore, the side panel P ₂
Can be passed along the second vertical ruled a ₂ fold with extremely high precision.

Side panel P_TwoAfter bending the second press
The lifting / lowering cylinder 79 of the device 64 is operated to release the press member 78.
Lower it. As the press member 78 descends, the side panel
Le P _TwoEnd panel already bent inward with
P₁Is pressed. At this time, it was bent first
End panel P_FiveThe coating device 72 shown in FIG.
Bend later because the adhesive is applied by
End panel P₁Is the end panel P that has been bent first
_FiveAnd a flat box as shown in FIG. 11 (IV).
S_TwoIs formed.

As described above, in the box forming apparatus shown in the embodiment, the concave blank S ₁ formed into a concave shape in the forming section B is sent to the box forming section C, and the concave blank S ₁ is formed in the box forming section C. Correct inclination S _1, the end face panel of the upright P ₅
And folding the, since to perform the O by bending the side panel P ₂ of upright, the end face panel P ₅ and the side panels P ₂ along a fourth vertical ruled a ₄ and second vertical lines a ₂ very accurately it can be bent, it is possible to form a high dimensional accuracy flat box S _2.

The box forming apparatus shown in FIG. 1 and FIG.
It can also be used for forming a flat box forming a corrugated cardboard box.

[0057] FIG. 12 (I) shows the blank S ₁₀ as the material for the formation of A-type cardboard box. The blank S ₁₀ is a side panel P _11, the end face panel P _12, side panels P _13, the end face panel P ₁₄ and the connecting pieces P ₁₅ first vertical line a ₁₁ to 4
Are provided continuously in one direction through the vertical ruled a _14. In addition, each continuously provided the inner flaps f _11, f ₁₁ and outer flaps f _13, f ₁₃ via the horizontal lines b ₁₁ on one side of the side panels P _11, P ₁₃ and end panel P _12, P _14, further , side panels P _11, P ₁₃ and end panel P _12, the other-side horizontal ruled line b ₁₂ inner flaps f ₁₂ through the the P _14, f ₁₂ and outer flaps f
₁₄ and f ₁₄ are connected in series.

[0058] above for the blank S ₁₀ using a forms a flat box body, the intermediate end face panel P ₁₂ in the depressing member 39 of the molding device 30 provided in the molding portion B of the forming apparatus shown in FIG. 1 and pushed down to the side panel P ₁₃ in a horizontal state, by contact with a fold guide 31 shown in FIG. 6,
Both sides of the side panels P ₁₁ and the end panel P ₁₄ and raised approximately 90 ° upward, as shown in FIG. 12 (II), to form a concave blank S _11.

The above-mentioned concave blank S _{11 is connected} to the first
Feeding the forming section C _1, the bending first folding shown in FIG. 9 (I) 6
1, the end panel P ₁₄ and the connecting piece P ₁₅ , which are continuously provided in the upright state, are bent substantially 90 ° inward, and FIG.
Forming an L-shaped blank S ₁₁ as shown in). When bending the end face panel P ₁₄ fold, the guide device 80 guide plate 81
By guiding the downstream side of the side edge of the end face panels P _14. The L-shaped blank S ₁₁ sends the second forming portion C _2, bent approximately 90 ° to the side panel P ₁₁ of upright inwardly by a second folding device 63 shown in FIG. 10 (I). After folding the side panels P _11, and the second press device 64 presses the end portion of the side panel P _11, connect the side panel P ₁₁ via an adhesive previously applied to the connecting pieces P ₁₅ Figure 12 to form a flat box S ₁₂ shown in (IV).

The blank S shown in FIG.₁To
End panel P shown_ThreeAnd side panel P_FourAnd FIG.
Blank S shown in (I)_TenEnd panel P₁₂And sides
Panel P ₁₃If the size of the end panel is the same
P₁₂And side panel P₁₃Is a pair of left and right bends of the molded part B
Paper feed unit A so that it is fed between
Adjusting the position of the provided side plate 2
The coating device 72 provided in the box forming section C is_Fifteen
Adjust the position of the applicator 72 to apply the adhesive on top
Prepare.

[0061]

As described above, according to the present invention, before the blank formed into a concave shape in the forming section is fed to the box forming section and the end panel and the side panel in the upright state are bent by the forming apparatus, the blank is formed. Since the positioning is performed by pressing the front end of the concave blank and pressing the rear end against the pressing member, the end panel and the side panel can be bent extremely accurately, and a flat box with high dimensional accuracy can be formed. Can be formed.

[Brief description of the drawings]

FIG. 1 is a front view schematically showing a box forming apparatus according to the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a vertical side view of a paper feeding unit of the box forming apparatus shown in FIG. 1;

FIG. 4 is a longitudinal sectional side view of a sheet feeding device of the box forming apparatus shown in FIG.

FIG. 5 is a vertical sectional front view showing an operation state of the sheet feeding device shown in FIG. 4;

FIG. 6 is a longitudinal sectional side view showing a forming apparatus of the box forming apparatus shown in FIG. 1;

7 is a longitudinal sectional side view showing an operation state of the molding apparatus shown in FIG. 6;

8 (I) is a front view of a tilt correcting device of the box forming device shown in FIG. 1, and FIG. 8 (II) is a front view showing an operation state thereof.

9 (I) is a vertical sectional side view showing a first folding device of the box forming device shown in FIG. 1, and FIG. 9 (II) is a vertical sectional side view showing an operation state.

10 (I) is a vertical sectional side view showing a second folding device of the box forming device shown in FIG. 1, and (II) is a vertical sectional side view showing an operation state.

11 (I) to (VI) are diagrams showing stepwise formation states of a flat box forming a cardboard box having a middle partition.

FIGS. 12 (I) to (IV) are diagrams showing stepwise formation states of a flat box body forming an A-type cardboard box.

FIG. 13 is a plan view showing a blank as a material for forming a cardboard box having a middle partition;

FIG. 14 is a perspective view showing a flat box formed by the blank shown in FIG. 13;

FIG. 15 is a perspective view of a cardboard box formed from the flat box shown in FIG. 14;

FIG. 16 is a plan view showing a defective box.

[Explanation of symbols]

P ₁ end face panel P ₂ side panel P ₃ end face panel P ₄ side panel P ₅ end face panel P ₁₁ side panels P ₁₂ end face panel P ₁₃ side panels P ₁₄ end face panel a ₁ to a ₄ vertical line a ₁₁ to a ₁₃ vertical lines DESCRIPTION OF SYMBOLS 10 Paper feeder 30 Forming apparatus 40 Conveying apparatus 42 Pressing member 50 Inclination correction apparatus 60 Forming apparatus

Claims (1)

[Claims] 1. A sheet feeding device for feeding a box forming blank, in which at least four panels forming a square cylindrical body of a box are continuously provided via vertical ruled lines, toward a forming unit, one by one. And a forming apparatus for forming the blank into a concave shape by raising the panels at both ends connected to both ends of the two panels of the intermediate portion of the blank fed into the forming section via vertical ruled lines by approximately 90 ° in the upward direction. A conveying device that presses the rear end on the upstream side of the concave blank with a pressing member and conveys the container to a box forming section provided on the downstream side of the forming section; and a downstream of the concave blank conveyed to the box forming section. Correction device that corrects the inclination of the concave blank by pressing the front end of the side and pressing the rear end on the upstream side against the pressing member of the conveying device, and the panel on which the concave blank whose inclination has been corrected in the box forming section is raised Bend inward approximately 90 °, and Forming device of the box comprising a forming apparatus for forming a flat box body by bonding the ends overlapping.