JP2010052275A - Box assembling apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a box assembling apparatus by which normal assembling of a box from a blank can be certainly carried out. <P>SOLUTION: The box assembling apparatus includes: a primary folding inner guide (58) and a primary folding outer guide (62) which carry out primary folding of an inner flap at a blank (BL) as fall of the blank (BL); and a secondary folding inner guide (66) and a secondary folding outer guide (72) which thereafter carry out secondary folding of the inner flap. The primary folding is carried out by folding the inner flap along an inside folding line among dual folding lines of the inner flap. The secondary folding is carried out by folding the inner flap along an outside folding line among the dual folding lines of the inner flap. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a box assembling apparatus for assembling a box from a sheet-like flat blank.

  The blank handled by this type of box assembly apparatus is composed of a rectangular bottom panel that serves as the bottom wall of the box, and a side panel that is connected to each side of the bottom panel via a folding line and that serves as a side wall of the box or a part thereof. Including. More specifically, an inner flap is connected to the pair of first side panels along the short sides of the bottom panel via folding lines, and on the other hand, both ends of the pair of second side panels along the long sides of the bottom panel The side flaps are connected to each other through a folding line (see FIG. 2A of Patent Document 1).

  When the box is assembled from the blank described above, the first side panel and the inner flap sandwich the side flap of the second side panel between them to form the side wall on the short side of the box, while the second side panel Forms the side wall on the long side of the box by itself. The inner flap is inserted into a claw hole at the boundary between the first side panel and the bottom panel with the insertion claw at the leading edge thereof, and is hooked into the claw hole so that the first and first The two side panels are assembled to each other, and thereby, the first and second side flaps can be held upright with respect to the bottom panel, that is, the box can be self-supported (FIGS. 2B to 2D of Patent Document 1). )reference).

In the box assembling apparatus of Patent Document 1, the first side panel is raised with respect to the bottom panel, and then the inner flap is folded into the first side panel by the bending member. More specifically, the bending member is given an arc motion that jumps over the first side panel in the standing state, and the bending member moves along the folding line between the first side panel and the inner flap. The inner flap is folded and overlapped with the first side panel via the side flap described above.
JP 7-256796 A

  By the way, as described above, the side wall on the short side of the box has a triple structure of the first side panel, the side flap, and the inner flap, so the folding line between the first side panel and the inner flap is actually The inner flap is composed of double fold lines that are parallel to each other, and the inner flap is folded at each of the inner and outer fold lines, so that there is an interval that allows the side flap to be sandwiched between the first side panel and the inner flap. It is to be secured.

  However, since the folding member of Patent Document 1 simultaneously folds the inner flap along the double folding line between the first side panel and the inner flap due to its single arc motion, each folding inside and outside Each of the inner flaps along the line may not be reliably folded. For this reason, after the inner flap is folded, the inner flap cannot be brought into close contact with the first side panel via the side flap, and insertion of the insertion claw into the nail hole, that is, normal assembly of the box is impossible. May be.

  The present invention has been made based on the above circumstances, and an object of the present invention is to provide a box assembling apparatus capable of solving the problems of the prior art and ensuring the normal assembly of the box.

  In order to achieve the above object, the present invention is a box assembling apparatus for assembling a box by folding a flat blank, wherein the box is a bottom wall, a pair of first side walls facing each other, and the first side walls. The first side panel is a pair of second side walls that are arranged so as to cross each other and face each other, while the blank serves as an outer portion of the first side wall, and a double fold line is provided on the first side panel. The inner flap that is an inner portion of the first side wall and the second side panel that is the second side wall are connected via a folding line, and the first side panel and the inner flap are formed when the first side wall is formed. When the first side wall is formed on at least one of the side flaps sandwiched therebetween, the insertion claws provided at the leading edge of the inner flap, and the first side panel and the bottom panel serving as the bottom wall, Nail In the box assembling apparatus including the claw holes that allow insertion, the assembling apparatus of the present invention performs the primary folding of the inner flap along the inner folding line on the first side panel side of the double folding lines. The primary folding means, and after the primary folding, the secondary folding of the inner flap is performed along the outer folding line of the double folding line in order to overlap the inner flap with the first side panel via the side flap. Next folding means is provided (claim 1).

According to such a box assembly apparatus of claim 1, since the inner flap is sequentially folded by the primary and secondary folding means, a double folding line between the first side panel and the inner flap, that is, The inner flaps are reliably folded along the inner and outer folding lines.
Specifically, the box assembling apparatus lowers the blank after the primary folding of the blank, and a plurality of suction pads for sucking and holding the blank at the site of the first side panel when performing the primary folding of the inner flap. In the process, a plurality of panel standing guides for standing up with respect to the bottom panel while guiding the first side panel are further provided. In this case, the primary folding means is disposed in the vicinity of the suction pad. In the next folding guide, during the first folding, contact the tip of the inner flap on the side away from the double folding line from below, and cooperate with the primary folding guide to move the inner flap along the inner folding line. A first folding guide which is preliminarily folded upward and disposed below the first folding guide. After the first folding of the inner flap, the inner flap is sandwiched between the inner folding guide and the first folding guide. A primary folding outer guide that completes the primary folding of the inner flap in a state where the inner flap is raised with respect to the wall, while the secondary folding means is formed by the lower part of the panel standing guide itself. Alternatively, the secondary folding outer guide provided continuously below the panel standing guide and the panel folding guide descends from the upper side of the panel standing guide toward the secondary folding outer guide. In this process, the inner flap comes into contact with the inner flap from above. Folding the flap along the outer folding line, a secondary folding guide that completes the secondary folding of the inner flap with the first side panel and the side flap sandwiched between the second folding outer guide, Along with the descending, it includes a secondary folding inner guide having a multi-step inclined surface that sequentially comes into contact with the inner flap (claim 2).

  According to the box assembling apparatus of claim 2, during the first folding of the blank, the first folding guide of the first folding means cooperates with the first folding outer guide, and the inner flap is preliminarily moved along the inner folding line. Then, the inner flap is sandwiched between the primary folding outer guide and the primary folding inner guide, whereby the primary folding of the inner flap along the inner folding line is completed. At this time, the inner flap stands up with respect to the first side panel, that is, the bottom panel.

Thereafter, when the blank is lowered, the first side panel rises with respect to the bottom panel while being guided by the panel standing guide, and the raised first side panel is positioned inside the secondary folding outer guide.
At this time, the inner flap that has completed the first folding is parallel to the bottom panel, and the second side panel is raised following the folding of the side flap of the second side panel, in the same manner as the first side panel is raised. The side flaps are superimposed on the inside of the first side panel in a standing state.

  Thereafter, in the above-mentioned state, the secondary folding inner guide descends toward the secondary folding outer guide. At this time, the secondary folding inner guide abuts the inner flap from above, and the inner flap is moved to the outer folding line. Fold along. More specifically, the secondary folding inner guide abuts the inner flap, and the inclined surfaces contributing to the folding are sequentially changed, and finally the first side panel and the inner folding guide are disposed between the secondary folding outer guide and the inner flap. The secondary folding of the inner flap is completed with the side flaps sandwiched.

Preferably, the secondary folding means further includes a pressing guide for pressing the inner flap from above until the secondary folding of the inner flap is started after the first side panel is erected (Claim 3).
According to the box assembling apparatus of claim 3, since the inner flap is pressed from above by the pressing guide at the start of the secondary folding of the inner flap, the inner flap is folded back around the inner folding line, that is, The inner flap is prevented from rotating outward (upward). Therefore, each inclined surface of the guide in the second folding is brought into contact with the inner flap at an accurate position when the guide is lowered, and the second folding of the inner flap is performed.

Further, the box assembling apparatus further includes a pushing member that can be lowered in conjunction with the guide in the second folding, and pushes the insertion hook of the inner flap toward the claw hole after the second folding is completed. (Claim 4).
According to the box assembling apparatus of the fourth aspect, the pushing member that descends in conjunction with the guide in the secondary folding is positioned in the vicinity of the insertion hook of the inner flap when the secondary folding of the inner flap is completed. Therefore, after that, the insertion nail can be immediately inserted into the nail hole.

Since the box assembling apparatus of the first aspect includes the primary and secondary folding means, the inner flap can be reliably folded along the inner and outer folding lines, and the box can be normally assembled. . Therefore, the operation of the box assembling apparatus is rarely stopped abnormally, so that the generation of defectively assembled boxes can be suppressed and the operating rate can be improved.
The box assembling apparatus according to claim 2 performs the first folding after the first folding of the inner flap first, so that the primary folding outer guide and the first folding inner guide that make the primary folding here Since the inner flap is smoothly guided in between, the primary folding can be reliably performed, and the inner folding guide performs the secondary folding of the inner flap by the multi-step inclined surface. The next folding is also performed smoothly, and its operational stability can be further enhanced.

  The box assembling apparatus according to claim 3 enables the secondary folding of the inner flap to be performed more stably by the action of the pressing guide, and the box assembling apparatus according to claim 4 immediately after the secondary folding of the inner flap is completed. That is, since the insertion of the insertion nail can be immediately performed in the nail hole in a state where the secondary folding here is maintained by the secondary folding outer guide and the secondary folding inner guide, the insertion nail can be inserted. At the same time, the time required for assembling the box can be shortened.

FIG. 1 schematically shows the entire boxing system including the box assembling apparatus of the present invention.
In this boxing system, a filter rod used for manufacturing a filter cigarette is packed in a box, and then the box is covered with a lid to form a box with a lid, and shipped to a filter cigarette manufacturing factory.
The boxing system will be briefly described below.

The boxing system is provided with a transfer path 10 for a paper box B0, which has a rectangular parallelepiped shape and has a rectangular opening on its upper surface. The box B0 is transferred on the transfer path 10 in the direction of the arrow in FIG. 2 with its long side along the transfer path 10.
More specifically, a supply section 12 of the box B0 is arranged at the upstream end (right-hand side in FIG. 2) of the transfer path 10, and this supply section 12 first receives the blank BL taken out from the blank stock 14 in the assembly stage. Fold in SA and assemble in box B0. Thereafter, the box B0 is transferred from the assembly stage SA to the filling stage SF in the supply section 12, and in this transfer process, the box B0 is changed to an upright posture with its opening face directed in the horizontal direction. After a predetermined number of filter rods (not shown) are packed in the box B0 at the packing stage SF, the box B0 is transferred toward the beginning of the transfer path 10, and in this process, the box B is opened to the opening surface. Is fed onto the transfer path 10 in a horizontal posture with the face up. The filter rod in the box B0 is in a posture perpendicular to the bottom of the box B0.

In the middle of the transfer path 10, the leveling stage SN and the covered stage SL are sequentially defined in the transfer direction of the box B0. At the leveling stage SN, the box B0 is vibrated up and down, and the filter rod inside the box B0 is leveled so that the end face on the opening surface side of the box B0 is positioned on the same surface.
Thereafter, the box B0 is similarly covered with a paper lid L at the lid stage SL, and the box B0 and the lid L become a box B with a filter rod accommodated therein. It is transferred toward the terminal stage SE of the transfer path 10. Here, the lid L is obtained by assembling a folded lid body taken out from the lid stock 16.

At the final stage SE, the box B with the lid is inspected, and only the box B with a good product is transferred from the transfer path 10 to the stacking section 18, while the box B ′ with a defective lid is stacked. Without being delivered to the section 18, it is discharged from the terminal stage SE to the exclusion path.
The stacking section 18 forms the box B with the lid supplied from the transfer path 10 into a stacking box row BC stacked in a predetermined number of stages. Thereafter, the stacking box row BC is supplied from the stacking section 18 onto the discharge path 20 and transferred to the delivery truck via the discharge path 20.

FIG. 2 specifically shows a blank BL for assembling the above-described box B0, and the blank BL has a flat sheet shape.
The blank BL has a rectangular bottom panel 22 which is the bottom of the box B0 at the center thereof, and side panels are connected to each side of the bottom panel 22 via folding lines indicated by broken lines. More specifically, the side panel includes a pair of first side panels 26 connected to each of a pair of short sides of the bottom panel 22 via a fold line 24a, and a fold line 24b to each of a pair of long sides of the bottom panel 22. A pair of second side panels 28 are connected to each other.

  Each first side panel 26 has an outer edge parallel to the folding line 24a, and an inner flap 32 is connected to the outer edge via a double folding line 30 indicated by a broken line. The double fold line 30 includes an outer fold line 30a on the inner flap 32 side and an inner fold line 30b on the first side panel 26 side. These outer and inner fold lines 30a and 30b have a predetermined interval. The first side panel 26 extends in parallel with the fold line 24a.

  Each second side panel 28 has both end edges spaced in the longitudinal direction, and side flaps 36 are connected to both end edges via folding lines 34 indicated by broken lines. In FIG. 2, the side flaps 36 of the lower second side panel 28 and the side flaps 36 of the upper second side panel 28 are different in shape and size from each other, but have the same shape. May be.

  Further, a pair of insertion claws 38 are slightly projected from the outer edge of each inner flap 32, and these insertion claws 38 are positioned in parallel with the double folding line 30 with a predetermined interval. It has been. On the other hand, claw holes 40 are formed on the folding lines 24a of the first side panels 26 corresponding to the insertion claws 38, respectively. In the case of the present embodiment, as is apparent from FIG. 2, the claw hole 40 is disposed so as to straddle the folding line 24 a across both the first side panel 26 and the bottom panel 22.

Next, with reference to FIG. 3, an outline of folding the blank BL, that is, assembling the box B0, which is performed at the assembly stage SA described above, will be described below.
As shown in FIG. 3A, first, each inner flap 32 is folded along the inner folding line 30b of the double folding lines 30 (primary folding), and each inner flap 32 is a first folding line. It stands up with respect to the side flap 26. Thereafter, each first side panel 26 is folded along the folding line 24a, and each first side panel 26 stands up with respect to the bottom panel 22 as shown in FIG. Accordingly, the inner flap 32 is parallel to the bottom panel 22.

  On the other hand, prior to the standing of each first side panel 26, the side flaps 36 at both ends of each second side panel 28 are folded along the folding line 34, and thereafter each second side panel 28 is also folded. Fold along 24b. Here, the side flap 36 and the second side panel 28 are folded with respect to the bottom panel 22 with the side flaps 36 along the folding line 24a and the first side panel 28 along the folding line 24b. Stand up.

Therefore, when the first side panel 26 is erected, the first side panel 26 is overlaid on the side flaps 36, and as shown in FIG. 3 (b) immediately above the first side panel 26 and the side flaps 36. Then, the inner flap 32 on the corresponding side is positioned.
Thereafter, each inner flap 32 is folded along the outer fold line 30a, so that each inner flap 32 is overlapped with the corresponding first side panel 26 via the side flap 36. As shown in FIG. 3C, the inner flap 32, the side flap 36, and the first side panel 26 form a first side wall Bs1 on the short side of the box B0. On the other hand, the second side wall Bs2 on the long side of the box B0 is formed by the second side panel 28 alone.

Further, as shown in FIG. 3 (d), the insertion claws 38 of each inner flap 32 are inserted into the corresponding claw holes 40 and are latched in the claw holes 40. 32 is held in a state where the side flaps 36 of the second side panels 28 are sandwiched between the corresponding first side panels 26. As a result, the assembly of the box B0 is completed, and the box B0 is self-supporting. To do.
In order to assemble the above-described box B0, a box assembling apparatus 42 as shown in FIG. 4 is arranged on the assembly stage SA. However, since the depiction of the box assembly device 42 of FIG. 4 is too practical and difficult to understand, FIG.

Therefore, the configuration of the box assembling apparatus 42 will be described below mainly with reference to FIG. 5, and FIG.
As shown in FIG. 5, the box assembling apparatus 42 includes a lifting platform 44, and the lifting platform 44 can move up and down. A push plate 46 is disposed above the lift 44 so as to face the lift 44, and the push plate 46 can also be moved up and down. The pressing plate 46 has a suction pad 48 at the center thereof, and the suction pad 48 faces downward.

  On the other hand, in the state shown in FIG. 5, the suction pads 50 are positioned on both sides of the pressing plate 46. These suction pads 50 face downward and hold the above-mentioned blank BL by suction. That is, the suction pad 50 constitutes a part of a supply device that supplies the blank BL to the assembly stage SA. More specifically, the suction pad 50 takes out the blank BL from the blank stock 14 by sucking and holding the blank BL at each of the first side panels 26, and the taken-out blank BL is defined immediately below the pressing plate 46. It can be positioned at the supply position.

In FIG. 5, one suction pad 50 is shown on each side of the push-down plate 46, but in practice, each first side panel 26 is sucked and held by the suction pad 50 at a plurality of locations.
As shown in FIG. 5, primary folding inner guides 58 are provided in the vicinity of the aforementioned suction pads 50, and these primary folding inner guides 58 can move together with the suction pads 50. More specifically, when the blank BL is sucked and held on the suction pad 50, the primary folding inner guide 58 has a folding edge that matches the inner folding line 30b of the double folding lines 30 in the blank BL.

A first folding guide 60 and a first folding outer guide 62 are respectively disposed below the first folding inner guide 58. The forward folding guide 60 and the primary folding outer guide 62 can move up and down, and constitute a primary folding means in cooperation with the primary folding inner guide 58.
Although not shown in FIG. 5, the first folding guide 60 and the primary folding outer guide 62 are connected to an air cylinder denoted by reference numeral 63 in FIG. 4, and can be moved up and down by the air cylinder 63. ing.

Further, four panel upright guides 52 are provided below the supply position of the blank BL. Two of these panel upright guides 52 are assigned to each of the second side panels 28 with respect to the blank BL at the supply position, and are arranged apart from each other along the longitudinal direction of the second side panel 28. .
Further, four flap standing guides 54 are provided below the supply position of the blank BL, and these flap standing guides 54 correspond to the respective side flaps 36 when viewed from the blank BL at the supply position. Has been placed. That is, the two flap upright guides 54 form a pair and are spaced apart from each other in the longitudinal direction of the blank BL at the supply position.

Two paired panel standing guides 56 are provided between two paired flap standing guides 54, and these panel standing guides 56 correspond to second blanks BL in the supply position. The first side panel 26 is located below and spaced apart in the longitudinal direction of the first side panel 26.
The arrangement of the standing guides 52, 54, and 56 is more apparent with reference to FIG. 4. The lower portions of the standing guides 52, 54, and 56 form a mandrel that surrounds the box B0 after the box BO is assembled. .

Pressing guides 64 are arranged between the above-described pair of panel standing guides 56, and these pressing guides 64 are positioned below the panel standing guides 56 and can be advanced and retracted with respect to the mandrel described above.
Further, as shown in FIG. 5, secondary folding guides 66 are provided on both sides of the above-described pressing plate 46, respectively. These secondary folding inner guides 66 are arranged above the blank BL at the supply position, and can move up and down independently of the pressing plate 46.

  Each of the secondary folding guides 66 has a side surface facing away from the pressing plate 46 as a folding surface, and this folding surface is formed of two inclined surfaces 66a and 66b in this embodiment. More specifically, the inclination angles of the inclined surfaces 66a and 66b are different from each other, and as is apparent from FIG. 5, the inclination angle of the upper inclined surface 66a with respect to the horizontal plane is larger than the inclination angle of the lower inclined surface 66b. The upper inclined surface 66a is steeper than the lower inclined surface 66b.

  Specifically, as is apparent from FIG. 4, two guide guides 66 are actually provided on both sides of the pressing plate 46, and are separated from each other in the width direction when viewed from the blank BL at the supply position. Are arranged. In addition, two plate-like pushing members 68 are arranged between each two of the secondary folding guides 66, and these pushing members 68 can move up and down in conjunction with the secondary folding guide 66. In order to project and retract with respect to the inclined surfaces 66a and 66b of the secondary folding inner guide 66 on the corresponding side, the second folding inner guide 66 can be moved in the horizontal direction and obliquely below, respectively. Movement in the horizontal direction and obliquely downward is performed by air cylinders 70 and 80 shown in FIG.

Furthermore, in the case of this embodiment, the lower end portion of each panel standing guide 56 described above functions as a secondary folding outer guide 72, and this secondary folding outer guide 72 cooperates with the corresponding secondary folding inner guide 66. A secondary folding means is constituted. The secondary folding outer guide 72 may be a separate body from the panel upright guide 56.
The specific arrangement of each component described above will become more apparent from the blank BL folding procedure described below with reference to FIGS. 6 to 13 show only one side of the box assembling apparatus 42 described above.

  FIG. 6 shows a state in which the blank BL is supplied to the supply position. At this time, the elevator 44 is raised and is in contact with the blank BL from below. When the first folding guide 60 and the first folding outer guide 62 are raised toward the blank BL from this state, first, as shown in FIG. 7, the first folding guide 60 is first moved to the tip of the inner flap 32 corresponding to the blank BL. Abuts the side part. Thereby, the front folding guide 60 cooperates with the primary folding inner guide 58, and the inner flap 32 is bent upward along the inner folding line 30b of the double folding lines 30, that is, preliminarily Ahead. By performing such a pre-folding, it is possible to reliably fold even a blank BL that is difficult to bend.

  Thereafter, when the forward folding guide 60 and the primary folding guide 62 continue to rise, the inner flap 32 is interposed between the primary folding guide 62 and the primary folding guide 58 as shown in FIG. As a result, the inner flap 32 is further folded along the inner folding line 30 b and stands up with respect to the first side panel 26. That is, the primary folding of the inner flap 32 along the inner folding line 30b is performed.

After completion of the primary folding, the push-down plate 46 descends from the rest position, sandwiches the bottom panel 22 of the blank BL with the lifting platform 44, and the suction pad 48 holds the bottom panel 22 by suction. .
On the other hand, after completion of the primary folding, the suction pad 50 releases the suction of the blank BL, that is, the first side panel 26, and moves backward toward the blank stock 14 to take out the next blank BL.

Thereafter, the blank BL is further lowered while being sandwiched between the pressing plate 46 and the lifting platform 44. At this time, the first side panel 26 comes into contact with the panel upright guide 56 as shown in FIG. While being guided by the panel standing guide 56, it is folded along the folding line 24a and begins to stand up with respect to the bottom panel 22 of the blank BL.
On the other hand, before the first side panel 26 starts to stand up, the side flaps 36 of the blank BL come into contact with the corresponding flap upright guides 54 as the blank BL descends. 34, and then, the second side panel 28 of the blank BL is also brought into contact with the corresponding panel upright guide 52, so that it is folded along the fold line 24b, with respect to the bottom panel 22 of the blank BL. And stand up. That is, the standing process of the side flap 36 and the second side panel 28 is performed.

Here, since the side flap 36 rotates 90 ° as the second side panel 28 stands, the side flap 36 follows the folding line 24a between the first side panel 26 and the bottom panel 22 as shown in FIG. Will stand up.
When the standing of the first side panel 26 is completed, as shown in FIG. 10, the first side panel 26 is overlapped with the side flap 36 that is already in the standing state. At this time, the first side panel 26 is sandwiched between the lower part of the panel standing guide 56, that is, between the secondary folding outer guide 72 and the side flap 36, and the inner flap 32 is connected to the bottom panel 22 of the blank BL. Become parallel.

  Thereafter, the pressing guide 64 advances toward the first side panel 26, the pressing guide 64 is positioned on the inner flap 32, and presses the inner flap 32 from above. Then, from this time point, the second folding inner guide 66 descends and comes into contact with the inner flap 32, and the inner flap 32 stands up along the outer folding line 30a of the double folding line 30. Fold it towards 26. The folding here, that is, the secondary folding, is surely performed along the outer folding line 30a because the inner flap 32 has already received the primary folding described above.

  More specifically, as shown in FIG. 11, the secondary folding inner guide 66 first comes into contact with the inner flap 32 at the lower inclined surface 66b, and the secondary folding of the inner flap 32 is started. Thereafter, when the secondary folding inner guide 66 descends, as shown in FIG. 12, the secondary folding inner guide 66 comes into contact with the inner flap 32 at the upper inclined surface 66a, and the inner flap 32 is further folded. Include. Finally, as shown in FIG. 13, the secondary folding inner guide 66 comes into contact with the inner flap 32 at the upper edge of the inclined surface 66 a to complete the secondary folding of the inner flap 32.

  When starting the above-described secondary folding, since the pressing guide 64 presses the inner flap 32 from above, the inner flap 32 is not folded back outward, that is, upward. The secondary folding is performed smoothly and reliably. Note that when the second folding is started, the pressing guide 64 moves backward and retracts from the first side panel 26.

When the secondary folding is thus completed, the first side panel 26, the side flap 36, and the inner flap 32 are sandwiched between the secondary folding outer guide 72 and the secondary folding inner guide 66. These three parties overlap each other.
Thereafter, as shown in FIG. 13, the pushing member 68 is pushed horizontally toward the inner flap 32, and the pushing member 68 brings the inner flap 32 into close contact with the side flap 36. Then, as shown in FIG. 14, when the pushing member 68 is pushed obliquely downward toward the corresponding insertion claw 38 of the inner flap 32, the pushing member 68 inserts the insertion claw 38 into the corresponding claw hole 40. At this point, the assembly of the box B0 is completed.

Thereafter, the secondary folding guide 66 is lifted from the box B0 with the pushing member 68, while the pressing plate 46 is also released from the suction pad 48 and lifted from the box B0 to raise the secondary folding guide. 66 and the push-down plate 46 both return to the position shown in FIG.
The box B0 is further lowered by a predetermined distance together with the lifting platform 44, and is transported toward the above-described stuffing stage SF.

The present invention is not limited to the above-described embodiment, and various modifications can be made.
For example, the box assembling apparatus of the present invention is not limited to a box for storing a filter rod, but can be applied to various box blanks for storing articles, as well as the shape of its components can be changed as appropriate. It is.

It is the schematic which showed the whole boxing system containing the box assembly apparatus of this invention. It is the figure which showed the blank which the box assembly apparatus of this invention handles. It is a figure for demonstrating the assembly of the box from the blank of FIG. 2, Comprising: (a) is the state which the primary folding of the inner flap in the blank was completed, (b) is folding of the inner flap from the state of (a). (C) shows a state where secondary folding of the inner flap is completed, and (d) shows a box after assembly. It is a one part perspective view of the box assembly apparatus of one Example. It is a figure which shows the schematic structure of the box assembly apparatus of FIG. It is a figure which shows the state just before the folding of a blank is started. It is a figure which shows the state from which the folding of the blank was started from the state of FIG. It is a figure which shows the state which the folding of the blank further advanced from the state of FIG. It is a figure which shows the state which the folding of the blank further advanced from the state of FIG. It is a figure which shows the state which the folding of the blank further advanced from the state of FIG. It is a figure which shows the state which the folding of the blank further advanced from the state of FIG. It is a figure which shows the state which the folding of the blank further advanced from the state of FIG. It is a figure which shows the state which the folding of the blank further advanced from the state of FIG. FIG. 14 is a diagram illustrating a state where the folding of the blank further proceeds from the state of FIG. 13 and the box assembly is completed.

Explanation of symbols

22 Bottom panels 24a, 24b Fold line 26 First side panel 28 Second side panel 30 Double fold line 30a Outer fold line 30b Inner fold line 32 Inner flap 36 Side flap 38 Inserting claw 40 Claw hole 42 Box assembly device 44 Lifting platform 46 Pressing plate 48 Suction pad 50 Suction pads 52, 54, 56 Panel standing guide 58 Primary folding guide (primary folding means)
60 First folding guide (primary folding means)
62 Primary folding outer guide (primary folding means)
64 Holding guide 66 Secondary folding guide (secondary folding means)
66a, 66b Inclined surface 68 Pushing member 72 Secondary folding outer guide (secondary folding means)
B0 box BL blank Bs1 first side wall Bs2 second side wall

Claims (4)

A box assembly device that folds a flat blank to assemble a box,
The box comprises a bottom wall, a pair of first side walls facing each other, a pair of second side walls arranged crossing these first side walls and facing each other,
On the other hand, a first side panel in which the blank is an outer portion of the first side wall, an inner flap that is connected to the first side panel via a double folding line, and is an inner portion of the first side wall, A side flap connected to a second side panel serving as a second side wall via a folding line, and sandwiched between the first side panel and the inner flap when the first side wall is formed; It is formed on at least one of the insertion claw provided at the leading edge and the first side panel and the bottom panel serving as the bottom wall, and allows the insertion claw to be inserted when the first side wall is formed. In a box assembly apparatus including a claw hole,
A primary folding means for performing a primary folding of the inner flap along an inner folding line on the first side panel side among the double folding lines;
After the primary folding, a second folding of the inner flap is made along the outer folding line of the double folding line in order to overlap the inner flap with the first side panel via the side flap. A box assembling apparatus comprising a next folding means. In performing the primary folding of the inner flap, a plurality of suction pads for sucking and holding the blank at a portion of the first side panel;
After the primary folding of the blank, in the process of lowering the blank, further comprising a plurality of panel standing guides that stand with respect to the bottom panel while guiding the first side panel,
The primary folding means includes a primary folding inner guide disposed in the vicinity of the suction pad and a tip of the inner flap on the side away from the double folding line during the primary folding from below. A first folding guide that pre-folds the inner flap in an upward direction along the inner folding line in cooperation with the first folding inner guide, and is disposed below the first folding guide. After the first folding of the flap, the inner flap is sandwiched between the inner folding guide and the inner flap is raised with respect to the first side panel, and the first folding of the inner flap is completed. Including a primary folding outer guide
The secondary folding means includes a secondary folding outer guide formed by a lower part of the panel standing guide itself, or provided continuously below the panel standing guide, and the secondary folding from above the panel standing guide. Lowering toward the outer guide, and in this process, the inner flap is brought into contact with the inner flap from above, the inner flap is folded along the outer folding line, and the first side panel and the second folding outer guide are A secondary folding inner guide that completes the secondary folding of the inner flap with the side flaps sandwiched therebetween, and has a multi-step inclined surface that sequentially contacts the inner flap as it descends. Including the next in-fold guide,
The box assembly apparatus according to claim 1.   The secondary folding means further includes a pressing guide for pressing the inner flap from above until the secondary folding of the inner flap is started after the first side panel is erected. The box assembling apparatus described in 1.   And a push-in member that can be lowered in conjunction with the guide in the secondary fold, and that pushes and inserts the insertion claw of the inner flap toward the claw hole after the completion of the secondary fold. The box assembling apparatus according to claim 2 or 3.

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