JP2018030250A - Carton-making machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carton-making machine which can open a body part accurately.SOLUTION: A support device includes a first support member 18 which has a first engagement device 25 and supports a rear side plate, a second support member 19 which has a second engagement device 35 and supports a left side plate, and a third support member 44 which has a third engagement device 45 and supports a front side plate 2PA. The support device is structured so as to displace between a close form in which the support member is arranged so that relative arrangement of the engagement device arranged on the support member becomes equal to relative arrangement of a side plate of the box 2 which is folded in a flat shape, and an open form in which the support member is arranged so that the relative arrangement of the engagement device arranged on the support member becomes equal to the relative arrangement of the side plate of an opened box which is opened in an octagonal cylindrical shape.SELECTED DRAWING: Figure 8

Description

  The present invention is to manufacture a box having a cylindrical body, a plurality of lower flaps provided at the lower edge of the body, and a plurality of upper flaps provided at the upper edge of the body. Concerning a box machine.

  It has a polygonal cylindrical body, a plurality of lower flaps provided on the lower edge of the body, and a plurality of upper flaps provided on the upper edge of the body so that the cross section of the body is octagonal. A box making machine for box making is known (for example, Patent Document 1). In the box making process performed by the box making machine, the box is opened from the folded state, and the box is opened into an approximately quadrangular cylinder, and the approximately quadrangular cylinder is formed into an octagonal cylinder. A forming step is included. In the molding process, the case is inserted with a case molding device inside the barrel, the case molding device is expanded, the barrel is expanded from the inside, and the barrel becomes an octagonal cylinder.

  In the opening process, the side surfaces of the body portion are opened so that two side surfaces connected by one side surface form an angle of 90 degrees with each other. When the two side surfaces are opened at 90 degrees, a force is applied to the side surface of the trunk portion, and a crease provided in advance in the trunk portion is broken by the force. By folding the crease of the body part, other side surfaces than the side surface opened by the box making machine are formed in a substantially quadrangular shape.

JP2015-1555311A

  However, in the opening process, after the trunk is opened to form a quadrangular cylinder, it is time-consuming because it is molded to form an octagonal cylinder, and the shape of the trunk tends to vary. There was a problem.

  In view of the above background, it is an object of the present invention to provide a box making machine that can be opened into an octagonal cylinder.

  In order to solve the above-described problem, an octagonal cylindrical body (2P) including a plurality of side plates extending vertically and connected to each other through a crease, and a plurality of provided on the upper edge of the body A box (2) having an upper flap (2U) and a plurality of lower flaps (2L) provided at the lower edge of the barrel portion is formed by the barrel portion being cylindrically folded from a state in which the barrel portion is folded flat. A box making machine (1, 200, 300) provided with an opening device for forming an open state, wherein the opening device is provided on an upper edge of the side plate of the trunk portion and the side plate. Support members (18, 19, 43) provided with engagement devices (25, 35, 45) that detachably engage with the flap (2U) and at least one of the lower flaps provided on the lower edge of the side plate. ) Having a support device (12), wherein the support member is provided on the support device. The apparatus supports the side plate by engaging with the side plate, and at least two of the support members support the two side plates connected to each other via the one or more side plates. The support device is configured such that the relative arrangement of the engagement devices provided on the support member is equal to the relative arrangement of the side plates corresponding to the engagement devices of the box folded flat. And the relative arrangement of the engagement devices provided on the support member is relative to the side plate corresponding to the engagement device of the box in the opened state. It may be configured to be displaceable to an open configuration in which the support member is arranged so as to be equal to the arrangement.

  According to this aspect, among the side plates of the box having an octagonal cylindrical body, the relative arrangement of the two side plates connected via at least one side plate corresponds to the corresponding box in the opened state. Therefore, the box is deformed so as to have an octagonal cylindrical body.

  Further, in the above aspect, the box is configured to be deformable so as to close the opening below the box by bending the lower flap, and the body portion of the box in the opened state is It is good to have the same shape as the body part of the box deformed so as to close the opening below the box by bending the lower flap.

  According to this aspect, the opening under the box can be closed by folding the lower flap of the box after the box is opened by the opening device.

  In the above aspect, the support device may include the three support members (18, 19, 43).

  According to this aspect, since the three side plates of the box are supported by the support member, the box is accurately deformed so as to have an octagonal cylindrical body.

  In the above aspect, the support device (12) includes a front support member (43) that supports the front plate (2PA), and a rear plate (2PE) that is disposed in parallel with the front plate in the opened state. And a rear support member (18) that supports the front side plate via one first intermediate side plate (2PB) and a second middle side plate (2PD) connected to the rear side plate. A lateral support member (19) for supporting the lateral side plate (2PC), and when the support device is in the open configuration, the lateral support member forms approximately 90 degrees with respect to the rear support member. The front support member is smaller than the sum of the widths of the first intermediate side plate, the lateral side plate, and the second intermediate side plate with respect to the rear support member, and larger than the width of the lateral side plate. It is good to arrange in parallel.

  According to this aspect, the rear side plate and the lateral side plate form an angle of about 90 degrees with each other, the lateral side plate and the front side plate form an approximately 90 degree with each other, and the rear side plate and the front side plate are arranged in parallel with each other. Therefore, the box is accurately deformed to have an octagonal cylindrical body.

  In the above aspect, the fold between the second intermediate side plate (2PD) and the rear side plate (2PE) or the fold between the second intermediate side plate and the lateral side plate (2PC) is flattened. It is good to make the side edge of the trunk of the box in the folded state.

  According to this aspect, since the rear side plate and the lateral side plate are provided across the fold line that is folded in the state where the box is folded, when the rear side plate and the lateral side plate are opened at an angle. The body part is easily deformed into an octagonal cylindrical shape.

In the above aspect, when the support device is in the closed configuration, the support plate supports the side plate corresponding to one of the front support member, the lateral support member, and the rear support member. Support the position of the side plate relative to the support member when the device is in the open configuration,
The support members other than the one support member may support the engagement device provided on the support member so as to be displaceable in the extending direction.

  According to this aspect, one of the front support member, the lateral support member, and the rear support member supports the corresponding side plate at the position of the side plate relative to the support member when the support device is in the open configuration. Therefore, no actuator is required between the support member and the engagement device provided on the support member, and the structure of the box making machine is simplified.

  In the above aspect, the front support member supports the front engagement device so that the front engagement device can be displaced in the extending direction, and the lateral support member supports the lateral engagement device so that the displacement can be displaced in the extending direction. The rear support member supports the rear engagement device so as to be displaceable in the extending direction, and the front engagement device is disposed between the front engagement device and the front support member with respect to the front support member. A front drive device (49) for displacing along the extending direction of the support member is provided, and the rear engagement device is disposed with respect to the rear support member between the rear engagement device and the rear support member. A rear drive device (28) for displacing along the extending direction of the rear support member is provided, and when the support device is deformed from the closed configuration to the open configuration, the front drive device is used as the front engagement device. Is displaced from the initial position to a predetermined post drive position, and the rear drive device is The coupling device may be displaced from an initial position to a predetermined driving after position.

  According to this aspect, when the support device is in the open configuration, the corresponding driving device displaces the front side plate and the rear side plate, so that the box is deformed so as to have an octagonal cylindrical body more accurately. Is done.

  In the above aspect, the front drive device and the rear drive device are stopped, and the support device is deformed from the closed configuration to the open configuration, so that the box opens into a quadrangular cylindrical shape. It is good to be done.

  According to this aspect, the box making machine deforms the box so as to have a quadrangular cylindrical body when the driving device is stopped, and the box is formed into an octagonal cylinder when the driving device is driven. It becomes possible to deform | transform so that it may have a trunk | drum.

  Further, in the above aspect, the support device is provided at a base, a pair of isometric rocking links (16) connected to the base so as to be pivotable, and tips of the rocking links. A parallel link mechanism (15) having an intermediate link (17) connected to be rotatable is provided, the rear support member is supported by the intermediate link, and the lateral support member is supported by one of the swing links. It is good to be.

  According to this aspect, the support device is deformed between a closed configuration in which the rear support member and the lateral support member extend in parallel to each other and an open configuration in which the rear support member and the lateral support member are opened at an angle to each other. Configured to be possible.

  In the above aspect, the box is formed by two parallel plate members (2F, 2B) and a plate-like member having a core (2M) having a wavy cross section sandwiched between them. The upper end surface of the upper flap is provided with a corrugated cross-section of the core, and each of the engagement devices may have a pin (27) that pierces the end surface of the upper flap.

  According to this aspect, the engaging device is engaged with the upper flap by inserting the pin into the hollow portion of the center core.

  Further, in the above aspect, the bending device (50) that sandwiches and bends the lower flap (2LO), the bending device includes two members (55A, 55B) disposed via a gap, A displacement device (56) for changing the distance between the two members, the displacement device changing the distance between the two members, whereby the lower flap is gripped by the two members, and the engagement device and the upper member are The engagement with the flap can be released.

  According to this aspect, when the lower flap is gripped by the bending device and the support device moves upward, the engagement between the engagement device and the upper flap is released, and the box can be transferred.

  In the above aspect, it is preferable to have a molding device (61) for forming the barrel part into an octagonal cylinder by expanding the barrel part in a predetermined width direction.

  According to this aspect, the body of the box is more accurately formed into an octagonal cylinder.

  In the above aspect, the molding device may be configured to engage the lower flap and bend the lower flap so as to be disposed at a predetermined position, thereby widening the body portion in a predetermined width direction.

  According to this aspect, the body portion can be expanded without inserting the molding device into the body portion.

  In the above aspect, the molding device may be configured to spread the body portion in a predetermined width direction by adsorbing to the outer surface of the side plate of the body portion and disposing the side plate at a predetermined position.

  According to this aspect, the body is expanded without inserting the molding device into the body, and the body is accurately molded.

  According to the above configuration, it is possible to provide a box making machine that can be opened into an octagonal cylinder.

Side view of the box making machine according to the embodiment (A) The perspective view which shows the sealing state of an octagonal box, (B) The top view which shows the blank state of an octagonal box, (C) The top view which shows the state folded by the flatness of the octagonal box (D) Perspective view showing a quadrangular cylinder state of an octagonal box, (E) Cross-sectional view of the quadrangular cylinder state (F) A perspective view showing the opened state of the octagonal box, (G) a sectional view of the opened state, (H) a perspective view showing a bottom assembled state of the octagonal box (A) A cross-sectional view in the flow direction of the corrugated board sheet having a fold in the direction perpendicular to the flow direction, and (B) a cross-sectional view in a direction perpendicular to the flow direction in the cardboard sheet having a fold in the flow direction. (A) A perspective view showing a sealed state of a quadrangular box, (B) a plan view showing a folded state of the quadrangular box, (C) a perspective view showing an opened state of the quadrangular box, (D) The perspective view which shows the bottom assembled state of a square box The perspective view of the opening apparatus of the box making machine concerning a 1st embodiment when a support device is a closed form. A perspective view of the opening device of the box making machine according to the first embodiment when the support device is in an open form and the box is opened so as to have an octagonal cylindrical body. Top view of the opening device of the box making machine according to the first embodiment when the support device is in the closed configuration. A top view of the opening device of the box making machine according to the first embodiment when the support device is in the open form and the box is opened so as to have an octagonal cylindrical body. Side view of the opening device of the box making machine according to the first embodiment when the support device is open and the box is opened so as to have an octagonal cylindrical body. Front views before (A) and after (B) folding the lower flap of the folding device of the box making machine according to the first embodiment Top views after (A) and after (B) forming the molding apparatus of the box making machine according to the first embodiment. Rear view after (A) and after (B) forming the molding apparatus of the box making machine according to the first embodiment The top view of the conveyance apparatus and correction apparatus of the box making machine concerning a 1st embodiment The top view and side view of the correction apparatus of the box making machine concerning a 1st embodiment Top view of the opening device of the box making machine according to the second embodiment when the support device is in the closed configuration A top view of the opening device of the box making machine according to the second embodiment when the support device is in the open form and the box is opened so as to have an octagonal cylindrical body. Top view of the opening device of the box making machine according to the third embodiment when the supporting device is in the closed configuration. A top view of the opening device of the box making machine according to the third embodiment when the support device is in the open form and the box is opened so as to have an octagonal cylindrical body. Top view of the opening device of the box making machine according to the third embodiment when the box is opened so as to have a quadrangular cylindrical body.

  Hereinafter, an embodiment of a box making machine of the present invention will be described with reference to the drawings.

(Box)
The box produced by the box making machine 1 according to the embodiment is a polygonal box, and an octagonal box 2 as shown in FIG. 2 (A) and a quadrangular box 3 as shown in FIG. 6 (A). including. Each box includes a polygonal cylindrical barrel portion P extending vertically, and an upper flap U and a lower flap L provided on the upper and lower edges of the barrel portion P, respectively.

(Octagonal box)
As shown in FIGS. 2 (A) and 2 (B), the octagonal box 2 includes an octagonal cylindrical body 2P whose axis extends vertically, and four upper flaps 2U provided on the upper edge thereof. It has four lower flaps 2L provided on the lower edge. The body portion 2P forms each side of the octagonal box 2 in the order of the front panel 2PA, the left front panel 2PB, the left panel 2PC, the left rear panel 2PD, the rear panel 2PE, the right rear panel 2PF, the right panel 2PG, and the right front panel 2PH. Each connected via a fold. The upper flap 2U and the lower flap 2L are folded so as to form an angle of approximately 90 degrees with respect to the panel of the trunk portion, thereby forming an octagonal box.

  As shown in FIGS. 5A and 5B, the octagonal box 2 has two plate-shaped members, a front liner 2F and a back liner 2B, and a wave-shaped cross section sandwiched between them. It is formed of a plate-like material (for example, a cardboard sheet) provided with a core 2M. The box is formed so that the flow direction of the waveform of the core 2M is parallel to the circumferential direction of the body 2P forming an octagon. A crease 2CR between the panels constituting the body 2P (for example, a crease between the front panel 2PA and the left front panel 2PB) is formed so as to be parallel to the flow direction as shown in FIG. Has been. On the other hand, the crease 2S between the panels 2PA to 2PE constituting the trunk portion 2P and the upper flap 2U and the lower flap 2L is formed to be perpendicular to the flow direction as shown in FIG. Yes.

  As shown in FIGS. 5A and 5B, the crease is formed by making a line from the back liner 2B so as to crush the peaks and valleys of the center core 2M. In general, the crease 2S formed perpendicular to the flow direction is less likely to fold and has a stronger resistance to the bending force than the crease 2CR formed parallel to the flow direction. Since the fold between the panels constituting the body 2P is formed to be parallel to the flow direction, the fold between the panels of the body 2P is between the body 2P and the upper and lower flaps 2U, 2L. It is easier to bend than the crease. In addition, the crease 2CR parallel to the flow direction is easy to bend so that the front liner 2F is convex and protrudes, and is difficult to bend so that the back liner 2B is convex and protrudes, and the body 2P is opened. The box folded flat can be opened into an octagonal cylinder. Further, by using the fact that the folds are easily broken as the corrugated peaks and valleys of the core 2M are crushed, the foldability of the fold between the body 2P and the upper and lower flaps 2U, 2L is changed.

  As shown in FIGS. 2 (B), 2 (C), 3 (D), (E), and 4 (F) to 4 (H), the octagonal box 2 is different depending on the arrangement of the body 2P and the flap. Transforms into As shown in FIG. 2B, the state in which the body portion 2P is unfolded and the upper and lower flaps 2U and 2L are arranged on the same plane as the body portion 2P is a blank state of the octagonal box 2. As shown in FIG. 2C, the cylindrical body 2P is folded flat, and the upper and lower flaps 2U and 2L extend in the same direction as the body 2P. It is in the folded state. As shown in FIGS. 3D and 3E, the body 2P is opened from the folded state so that the body 2P has a quadrangular cylindrical shape, and the upper and lower flaps 2U and 2L are the axes of the body 2P. The state extending in the same direction is a quadrangular tube state. 4 (F) and 4 (G), the body P is opened so as to form an octagonal cylinder, and the upper and lower flaps 2U, 2L extend in the same direction as the axis of the body 2P. Is open. As shown in FIG. 2A, the body portion 2P is formed in a predetermined state, and the upper and lower flaps 2U and 2L are folded so as to be orthogonal so as to close the upper and lower openings of the body portion 2P. It is. As shown in FIG. 4H, the body 2P is formed in a predetermined state, and the lower flap 2L is bent so as to be orthogonal so as to close the opening below the body 2P is a bottom assembly state. .

  FIG. 2B shows a blank state of the octagonal box 2. The body 2P is connected to each other through a fold line in the order of the rear panel 2PE, the right rear panel 2PF, the right panel 2PG, the right front panel 2PH, the front panel 2PA, the left front panel 2PB, the left panel 2PC, and the left rear panel 2PD. I am doing. An upper flap 2U and a lower flap 2L are connected to the upper and lower sides of the panel of the body portion 2P. The upper flap 2U includes a front upper flap 2UA provided at the upper edge of the front panel 2PA, a left upper flap 2UB provided at the upper edge of the left panel 2PC, and a rear upper flap 2UC provided at the upper edge of the rear panel 2PE. And an upper right flap 2UD provided at the upper edge of the right panel 2PG. The lower flap 2L includes a front lower flap 2LA provided on the upper edge of the front panel 2PA, a left lower flap 2LB provided on the upper edge of the left panel 2PC, and a rear lower flap 2LC provided on the upper edge of the rear panel 2PE. And a lower right flap 2LD provided at the upper edge of the right panel 2PG.

  As shown in FIG. 2B, a coupling piece 2J is provided on the rear edge of the right rear panel 2PF via a fold. In the blank box, the body 2P is formed in a cylindrical shape by joining the joining piece 2J to the inner surface of the rear panel 2PE. In the flat folded state, the body 2P is folded at 360 degrees at the fold between the front panel 2PA and the right front panel 2PH and the fold between the rear panel 2PE and the left rear panel 2PD. The octagonal box 2 is in a flat plate shape. As shown in FIG. 2 (C), in a state of being folded flat, left front panel 2PB, left panel 2PC, left rear panel 2PD, front panel 2PA, upper left flap 2UB, lower left flap 2LB, front upper flap 2UA, and The front lower flap 2LA forms one flat plate. The right rear panel 2PF, the right panel 2PG, the right front panel 2PH, the rear panel 2PE, the upper right flap 2UD, the lower right flap 2LD, the rear upper flap 2UC, and the rear lower flap 2LC are also different flat plates. The upper end of the upper flap 2U and the lower end of the lower flap 2L have the same height in the vertical direction, and the corrugated cross section of the core 2M is exposed on the upper end side surface of the upper flap 2U.

  As shown in FIGS. 3D and 3E, in the quadrangular cylinder state, the body 2P has a quadrangular cylindrical shape whose axis extends vertically. The left front panel 2PB, the left panel 2PC, and the left rear panel 2PD are flat, and the right front panel 2PH, the right panel 2PG, and the right rear panel 2PF are also flat, and these two flat plates are positioned in parallel. The front panel 2PA and the rear panel 2PE are parallel to each other, and other panels are arranged so as to connect both ends of the two flat plates, and the body 2P has a rectangular cross section. The upper flap 2U and the lower flap 2L are connected to a panel to which the respective flaps are directly connected via folds and extend in the vertical direction. The upper end of the upper flap 2U and the lower end of the lower flap 2L are provided so as to have the same height in the vertical direction, and the corrugated cross section of the core 2M is exposed on the upper end side surface of the upper flap 2U.

  As shown in FIGS. 4 (F) and 4 (G), in the opened state, the body 2P is formed to form an octagonal cylinder having an axis extending vertically. The body 2P includes a front panel 2PA, a left front panel 2PB, a left panel 2PC, a left rear panel 2PD, a rear panel 2PE, a right rear panel 2PF, a right panel 2PG, and a right front panel 2PH, which are connected via fold lines. Is bent at a predetermined angle. The upper flap 2U and the lower flap 2L are arranged so as to be parallel to the panel of the body 2P to which the respective flaps are directly connected. The front panel 2PA and the rear panel 2PE are arranged parallel to each other with their surfaces facing forward and backward. The left panel 2PC and the right panel 2PG are arranged parallel to each other with their surfaces facing left and right and spaced from each other. The left front panel 2PB, the left rear panel 2PD, the right rear panel 2PF, and the right front panel 2PH are arranged so as to chamfer the corners of the rectangular cylinder formed by the front panel 2PA, the left panel 2PC, the rear panel 2PE, and the right panel 2PG. Has been.

  As shown in FIG. 2A, in the sealed state, the body portion 2P is formed in an octagonal cylinder shape. The leading edges of the upper left flap 2UB and the upper right flap 2UD are bonded by an adhesive tape T extending in the front-rear direction. Similarly, the front end edges of the lower left flap 2LB and the lower right flap 2LD are bonded by an adhesive tape T extending in the front-rear direction. The front end of each adhesive tape T is bonded to the front panel 2PA, and the rear end is bonded to the rear panel 2PE.

  As shown in FIG. 4 (H), in the bottom assembly state, the body 2P is formed to form an octagonal cylinder, and the lower flap 2L is bent at right angles to each panel of the body 2P, and the lower left flap 2LB. And the front-end edge of lower right flap 2LD is adhere | attached by the adhesive tape T extended front and back, and upper flap 2U is open | released upwards.

(Square box)
As shown in FIGS. 6 (A) to (D), the quadrangular box 3 is connected to a quadrangular cylindrical barrel portion 3P whose axis extends vertically, and 4 connected to the upper edge of the trunk portion 3P via a crease. It has three upper flaps 3U and four lower flaps 3L connected to the lower edge of the trunk portion 3P via folds. The body portion 3P includes a front panel 3PA, a left panel 3PC, a rear panel 3PE, and a right panel 3PG, which form each side of the quadrangular cylinder, in the order described. As shown in FIG. 6 (A), in the sealed state, the front panel 3PA and the rear panel 3PE are arranged parallel to each other with their surfaces facing forward and backward. The left panel 3PC and the right panel 3PG are arranged parallel to each other with their surfaces facing left and right and spaced from each other.

  As shown in FIGS. 6C and 6D, the lower flap 3L corresponds to the lower edges of the front panel 3PA, the left panel 3PC, the rear panel 3PE, and the right panel 3PG, respectively. It has a flap 3LB, a rear lower flap 3LC, and a lower right flap 3LD. The upper flap 3U has a front upper flap 3UA, a left upper flap 3UB, a rear upper flap 3UC, and a right upper flap 3UD that are vertically symmetrical with the lower flap 3L.

  As shown in FIG. 6B, the quadrangular box 3 is folded when the body 3P is folded between the front panel 3PA and the right panel 3PG and between the rear panel 3PE and the left panel 3PC. In this fold, the quadrangular box 3 is bent so as to form 360 degrees and is in a flat plate shape. As shown in FIG. 6C, when the quadrangular box 3 is opened, the body 3P has a rectangular quadrangular cylindrical shape whose axis extends vertically. The front panel 3PA and the rear panel 3PE are arranged in parallel to face each other. The right panel 3PG is provided so as to connect the right edge of the front panel 3PA and the right edge of the rear panel 3PE, and the left panel 3PC is provided so as to connect the left edge of the front panel 3PA and the left edge of the rear panel 3PE. It has been. The upper flap 3U and the lower flap 3L are connected to the panel to which the respective flaps are directly connected via folds and extend in the vertical direction. The upper end of the upper flap 3U and the lower end of the lower flap 3L are provided so as to have the same height in the vertical direction, and the corrugated cross section of the core 2M is exposed on the upper end side surface of the upper flap 3U. As shown in FIG. 6A, in the sealed state, the upper and lower flaps 3U and 3L are bent at right angles to the panels of the body portion 3P, the leading edges of the upper left flap 3UB and the upper right flap 3UD, and the lower left flap. This is a state where 3LB and the front edge of the lower right flap 3LD are bonded by an adhesive tape T extending in the front-rear direction. As shown in FIG. 6D, in the bottom assembly state, the body portion 3P is formed to form a quadrangular cylinder like the opened state, and the lower flap 3L is perpendicular to each panel of the body portion 3P. The upper left flap 3LB and the front edge of the lower right flap 3LD are bent and bonded to each other by an adhesive tape T extending forward and backward, and only the upper flap is opened.

<< First Embodiment >>
The box making machine 1 according to the first embodiment is arranged along a center line extending in the front-rear direction. The box making machine 1 separates the folded and folded octagonal box 2 (hereinafter referred to as box 2) one by one, and the body 2P of the separated box 2 has an octagonal cylinder. The box 2 is opened so as to form a shape, the lower flap 2L is bent, the body 2P is formed into an octagonal cylinder, the lower flap 2L is taped, and the box 2 is deformed into a bottom assembly state. , Send forward.

(Supply device)
As shown in FIG. 1, the box making machine 1 includes a supply device 5 that separates and feeds a plurality of boxes 2 folded at the rear end thereof one by one. The supply device 5 includes a mounting table 6 having a slope whose front end is lowered, and a plurality of boxes 2 that are folded on the mounting table 6 are supported. A plurality of folded boxes 2 are placed on the mounting table 6 so that they stand upright on the slope, face the main surface in the front-rear direction, and line up in the front-rear direction. A pressing body 7 is provided on the mounting table 6, and the pressing body 7 presses the box 2 forward from the rear end of the mounted box 2 using a cylinder or the like as a driving force.

  As shown in FIGS. 1, 7, and 8, an injector plate 8 that separates the boxes 2 one by one is provided at the front end of the mounting table 6. The upper edge of the injector plate 8 has a width about the thickness of one box 2 in the front and rear, a supply support surface 9 that is an upward surface, a front side of the supply support surface 9, and an upper side. A protruding piece is provided. The injector plate 8 is configured to be movable between an initial position where the supply support surface 9 is at the same height as the front end of the mounting table 6 and a supply position provided above the initial position.

  Next, operation | movement of the supply apparatus 5 is demonstrated. Of the boxes 2 placed on the mounting table 6 and urged forward, one box 2 located in the foremost position is pushed out to the supply support surface 9 and hits the protruding piece. Since the front-rear width of the supply support surface 9 is about the thickness of one box, the one box 2 moves to the supply support surface 9. After the box 2 moves to the supply support surface 9, the injector plate 8 moves from the initial position to the supply position, whereby the box 2 moves upward and is sent out. When the delivery of one box 2 is completed, the injector plate 8 returns to the initial position. When the injector plate 8 returns to the initial position, among the boxes 2 mounted on the mounting table 6, one box 2 positioned at the forefront is pushed out from the mounting table 6 to the supply support surface 9.

(Opening device)
As shown in FIGS. 7 and 8, the box making machine 1 receives the box 2 sent from the supply device 5, and opens the box 2 </ b> P so that the body 2 </ b> P has an octagonal cylindrical shape. Is provided on the front side of the supply device 5. As shown in FIGS. 9 and 10, the opening device 10 is supported by an opening device base 11 provided on the front side of the mounting table 6 and on the upper side of the opening device base 11 so as to be vertically displaceable. And a support device 12 having a mechanism for supporting two side surfaces of the body portion 2P and displacing the side surfaces, and a first actuator 13 for moving the support device 12 up and down.

  As shown in FIGS. 9, 10, and 11, the support device 12 includes a support table 14 provided on the front side of the left end of the mounting table 6, and a parallel link mechanism 15 connected to the support table 14. Yes. The parallel link mechanism 15 includes a pair of isometric swing links 16 that are rotatably connected to the support base 14, and an intermediate link 17 that is rotatably connected to the respective ends of the swing links 16. Prepare. The base end of the rocking link 16 has two points (points P and Q in FIGS. 9 and 10) provided on the front and back of the support base 14 as axes along lines extending vertically through the points. It is rotatably supported. Each end of the swing link 16 is connected to the intermediate link 17. In the present embodiment, as shown in FIG. 11, the swing links 16 are formed in a pair in the vertical direction, and both are coupled to one intermediate link 17.

  A first support member 18 extending in the right direction is coupled to the right side surface of the intermediate link 17. Of the two links of the swing link 16, a second support member 19 extending in the horizontal direction is coupled to the front surface of the front link. The second support member 19 is provided with a rail (not shown) extending in the extending direction of the second support member 19.

  The support device 12 is displaced between the closed configuration and the open configuration by the rotation of the swing link 16. As shown in FIG. 9, when the support device 12 is in the closed configuration, the first support member 18 and the second support member 19 extend to the left and right in parallel with each other. The first support member 18 is located on the front side of the supply device 5 and behind the second support member 19. As shown in FIG. 10, when the support device 12 is in the open configuration, the second support member 19 is left in a plan view centered on a point Q that is a connection point between the support base 14 and the swing link 16. It rotates around and opens until the first support member 18 and the second support member 19 form an angle of approximately 90 degrees. In the following description, the end portions of the first support member 18 and the second support member 19 on the side close to each other are referred to as the proximal end and the end portions on the side away from each other based on the open state of the support device 12 as necessary. Is described as the distal end.

  A first engagement device 25 is provided on the side surface of the first support member 18. As shown in FIG. 11, the first engagement device 25 includes a plate-like first engagement device main body 26 having front and rear surfaces and a pin 27 coupled to the first engagement device main body 26. The pin 27 has a base end coupled to the first engagement device main body 26, extends downward from the base end with a gap in the first engagement device main body 26, and has a needle shape with the tip protruding downward. Is formed. The tip of the pin 27 can be inserted into a gap formed between the front liner 2F, the back liner 2B, and the center core 2M constituting the box 2 from the end face of the upper flap 2U, and the pin 27 is When stabbed into the end face of the flap 2U, it is formed with such a thickness that a frictional force is generated between the pin 27 and the box 2. In the present embodiment, the first engagement device 25 is fixed to the first support member 18.

  The second support member 19 is provided with a second engagement device 35 slidable in the extending direction. The second engagement device 35 is coupled to the second support member 19 and the second engagement device main body 36 formed in a plate shape extending along the extending direction of the second support member 19 and the vertical direction. A slider (not shown) and a pin 27 are provided. The pin 27 provided in the second engagement device 35 is the same as the pin 27 provided in the first engagement device 25, is formed in a needle shape, and is inserted into the box 2 from the end face of the upper flap 2U of the box 2. Is engaged with the box 2. The slider is slidably coupled to the rail of the second support member 19. By coupling the slider and the rail, the second engagement device main body 36 is supported by the second support member 19 so as to be slidable in the extending direction. Two opening urging devices 38 are provided between the second support member 19 and the second engagement device main body 36. One opening urging device 38 is coupled to the distal end side of the second support member 19 at one end thereof, extends to the proximal end side of the second support member 19, and the second engagement device main body 36 at the other end. Is bound to. The other opening biasing device 38 is coupled to the proximal end side of the second support member 19 at one end thereof, extends to the distal end side of the second support member 19, and is connected to the second engagement device main body 36 at the other end. Is bound to. The second engagement device 35 is urged by the two opening urging devices 38 to the distal end side and the proximal end side of the second support member 19, respectively. When the engagement between the pin 27 and the upper flap 2U is released, the second engagement device 35 returns to a predetermined initial position. In the present embodiment, a tension coil spring is used as the opening urging device 38.

  As shown in FIGS. 9 and 10, the unpacking device 10 is further provided with a first frame 41 coupled to the intermediate link 17 and extending forward. A second frame 42 extending in the front-rear direction is coupled to the right end of the first support member 18. The first frame 41 and the second frame 42 are formed in parallel to each other, and the first frame 41 and the second frame 42 are each provided with a rail extending in the extending direction (front-rear direction). A first frame 41 and a second frame 42 are coupled to a third frame 43 that extends to the left and right. Sliders that are slidably coupled to the rails of the first frame 41 and the second frame 42 are provided at the left and right ends of the third frame 43, and the third frame 43 is moved forward and backward by the first frame 41 and the second frame 42. Is supported so as to be movable. The first frame 41, the second frame 42, and the third frame 43 are located above the first support member 18 and the second support member 19 so as not to collide with the first support member 18 and the second support member 19. Is provided. On the upper side of the third frame 43, a rail extending in the extending direction (left-right direction) of the third frame 43 is provided. In the present embodiment, in order to support the first frame 41 and the second frame 42, a frame 41F extending left and right is provided between them.

  A slider is slidably coupled to the rail of the third frame 43, and a third support member 44 having a rearward surface is coupled to the slider. The third support member 44 moves along the extending direction of the third frame 43 by the rail of the third frame 43 and the slider slidably connected to the rail. A third engagement device 45 is provided on the rearward surface of the third support member 44. Similar to the second engagement device 35, the third engagement device 45 is formed in a plate shape extending along the extending direction of the third support member 44 and the vertical direction, and has a third engagement surface. The apparatus main body 46 is provided with a plurality of pins 27 formed on the surface thereof and extending downward to engage with the end surface of the upper flap 2U. In the present embodiment, the third engagement device 45 is fixed to the third support member 44. Further, an opening stopper member 48 is provided on the rail of the third frame 43 in order to restrict the leftward movement of the third support member 44.

  When the support device 12 is in the closed configuration, the third engagement device main body 46 is positioned on the right side of the second engagement device main body 36, and the first engagement device main body 26, the second engagement device main body 36, and the third engagement. The combined device main body 46 is arranged so as to be parallel to each other through a gap about the thickness of the box 2. The third engagement device main body 46 is coupled to the distal end side of the second engagement device main body 36 via a connector 47. In this embodiment, the connection tool 47 is configured using an L-shaped metal fitting, and the second engagement device main body 36 and the connection tool 47 are connected by a hinge having a hinge axis in the vertical direction. Therefore, the third engagement device main body 46 moves so as to rotate with respect to the second engagement device main body 36 with the hinge shaft as an axis. Further, the second engagement device body 36 is provided with a connection tool stopper member 47S in order to restrict the rotation angle of the connection tool 47 with respect to the second engagement device body 36.

  Next, the operation of the opening device 10 will be described. The opening device 10 operates so as to deform the box 2 from a folded state to an opened state in which the body 2P has an octagonal cylindrical shape. In the opened state, the front panel 2PA and the rear panel 2PE of the box 2 are formed in parallel, and the left panel 2PC and the right panel 2PG form an angle of about 90 degrees with respect to the front panel 2PA. The distance in the left-right direction with respect to the left end of the panel 2PE (Z in FIG. 10) and the distance in the left-right direction between the left panel 2PC and the left end of the front panel 2PA respectively correspond to the box 2 in the bottom set state. It will be the same length as the distance.

  When the injector plate 8 moves to the supply position, the box 2 is pushed upward, and one box 2 in a folded state is supplied to the box opening device 10. The box 2 is stacked on the box opening device 10 so that the left end thereof is a fold between the rear panel 2PE and the left rear panel 2PD, and the front panel 2PA is positioned in front of the rear panel 2PE.

  The box 2 is opened from the lower side between the first engaging device main body 26, the second engaging device main body 36, and the third engaging device main body 46 that are arranged in parallel. To be supplied. When the box 2 is supplied to the opening device 10, the support device 12 is in a closed configuration. When the support device 12 is in the closed configuration, the first support member 18, the second support member 19, and the third support member 44 are the first engagement device 25, the second engagement device 35, and the third engagement device 45. Are arranged so as to be equal to the rear panel 2PE, the left panel 2PC, and the front panel 2PA of the box 2 folded flat. When the box 2 is supplied to the opening device 10, the pin 27 provided on the first engagement device 25 pierces the upper end surface of the rear upper flap 2UC of the box 2 and is provided on the first engagement device 25. The pin 27 is connected to the rear upper flap 2UC. Similarly to the first engagement device 25, the pin 27 provided on the second engagement device 35 is coupled to the upper left flap 2UB, and the pin 27 provided on the third engagement device 45 is connected to the front upper flap 2UA. Join. After the pin 27 is stuck in the upper flap 2U, the injector plate 8 is lowered from the supply position to the initial position, and the box 2 is moved to the first engagement device 25, the second engagement device 35, and the third engagement device 45. Engage and remain in the opening device 10.

  In the present embodiment, when the support device 12 is in the closed configuration, the distance (X in FIG. 9) between the crease and the point Q between the rear panel 2PE and the left rear panel 2PD, and the rear panel 2PE and the left The difference between the crease between the rear panel 2PD and the point Q in the front-rear direction (Y in FIG. 9) is the distance in the left-right direction of the left panel 2PC relative to the rear panel 2PE of the box 2 in the opened state (FIG. 10 at a position equal to Z), the box 2 engages with the first engagement device 25, the second engagement device 35, and the third engagement device 45, and the first support member 18 and the second support member 19 are engaged. And the third support member 44.

  When the box 2 is supplied to the opening device 10, the support device 12 is displaced from the closed configuration to the open configuration. While the support device 12 is displaced from the closed configuration to the open configuration, the rear upper flap 2UC is engaged with the first engagement device 25, the upper left flap 2UB is engaged with the second engagement device 35, and the front upper flap 2UA is The third engagement device 45 is engaged. Since the crease between the body portion 2P and the upper flap 2U is difficult to break, the rear panel 2PE connected directly to the rear upper flap 2UC moves together with the first engagement device 25 and directly connects to the upper left flap 2UB. The left panel 2PC moves together with the second engagement device 35, and the front panel 2PA connected directly to the front upper flap 2UA moves together with the third engagement device 45.

  When the support device 12 is in the open form, the support device 12 is opened so that the angle formed by the first support member 18 and the second support member 19 is approximately 90 degrees. When the support device 12 is in the closed configuration, the difference between the distance between the fold line and the point Q between the rear panel 2PE and the left rear panel 2PD in the left-right direction and the distance between the fold line and the point Q in the front-rear direction is Since the distance between the left panel 2PC and the left panel 2PC in the horizontal direction relative to the rear panel 2PE of the box 2 in the state is equal to the angle between the first support member 18 and the second support member 19, as shown in FIG. The left panel with respect to the rear panel 2PE of the box 2 in the opened state has a relative position in the left-right direction of the second engagement device 35 with respect to the first engagement device 25 by being opened to be approximately 90 degrees. It becomes equal to the relative position of 2PC in the left-right direction. Since the left panel 2PC is connected to the rear panel 2PE by the left rear panel 2PD and the first engagement device 25 is fixed to the first support member 18, the left panel 2PC is pulled rearward by the rear panel 2PE. Since the second engagement device 35 is supported by the second support member 19 so as to be slidable in the front-rear direction, which is its extending direction, the second engagement device 35 is applied by the force from the rear panel 2PE applied to the left panel 2PC. Moves along the second support member 19, and the relative position of the second engagement device 35 with respect to the first engagement device 25 in the front-rear direction is the left panel 2PC with respect to the rear panel 2PE of the box 2 in the opened state. It becomes equal to the relative position in the front-back direction. Therefore, when the support device 12 changes from the closed configuration to the open configuration, the relative position of the second engagement device 35 with respect to the first engagement device 25 is the left panel 2PC with respect to the rear panel 2PE of the box 2 in the opened state. It is equal to the relative position of. When the support device 12 is in the open configuration, the rear panel 2PE and the left panel 2PC form an angle of approximately 90 degrees with each other, and the left rear panel 2PD is inclined with respect to the rear panel 2PE and the left panel 2PC. The

  When the support device 12 is in the open configuration, the second support member 19 opens so as to form an angle of approximately 90 degrees with respect to the first support member 18. Since the third engagement device main body 46 is connected to the distal end side of the second engagement device main body 36 via the connector 47, the third support member 44 is moved forward of the second support member 19 by centrifugal force. Pushed out. As the third support member 44 is pushed forward, the third frame 43 moves forward. When the support device 12 is in the open configuration, the third support member 44 is disposed in front of the first support member 18 via a predetermined distance. Therefore, the third engagement device main body 46 is disposed substantially parallel to the first engagement device main body 26, and is approximately 90 degrees with respect to the second engagement device main body 36 in front of the second engagement device main body 36. It arrange | positions so that the angle of may be made.

  The third engagement device body 46 is connected to the distal end of the second engagement device body 36 via a connector 47, and the third engagement device body 46 is fixed to the third support member 44. Therefore, the third support member 44 moves to the left as the second engagement device main body 36 moves. When the support device 12 is in the open configuration, the third support member 44 moves to the left along the third frame 43 until it contacts the opening stopper member 48. In the present embodiment, the distance in the left-right direction between the left panel 2PC that engages with the second engagement device 35 and the left end of the front panel 2PA that engages with the third engagement device 45 is the open state of the box 2. The position of the opening stopper member 48 is determined so as to be equal to the distance in the left-right direction of the left panel 2PC with respect to the rear panel 2PE. In the present embodiment, the connection tool stopper member 47S restricts the rotation angle of the connection tool 47 with respect to the second engagement device main body 36, and thus the movement of the third engagement device 45 to the right is restricted. Therefore, when the support device 12 is in the open configuration, the relative position of the third engagement device 45 in the left-right direction with respect to the first engagement device 25 is the front of the rear panel 2PE of the box 2 in the opened state. It is equal to the relative position in the left-right direction of the panel 2PA.

  The relative position in the left-right direction of the third engagement device 45 with respect to the first engagement device 25 is equal to the relative position in the left-right direction of the front panel 2PA with respect to the rear panel 2PE of the box 2 in the opened state. ing. Therefore, the left end of the front panel 2PA is located on a straight line that passes through the left end of the rear panel 2PE and extends back and forth. On the other hand, the front panel 2PA is connected to the left front panel 2PB, and the left front panel 2PB is connected to the left panel 2PC. Therefore, the left end of the front panel 2PA is positioned by the left panel 2PC on the circumference with the front end of the left panel 2PC as the center and the width of the left front panel 2PB shown in FIG. 10 as the radius. Therefore, the left end of the front panel 2PA moves to the position of the intersection of the straight line and the circle (R in FIG. 10). Furthermore, since the third engagement device main body 46 is displaced while having a rearward surface, the front panel 2PA is disposed substantially parallel to the rear panel 2PE. Therefore, the relative position of the third engagement device 45 with respect to the first engagement device 25 is equal to the relative position of the front panel 2PA with respect to the rear panel 2PE of the box 2 in the opened state. When the support device 12 is in the open configuration, the rear panel 2PE and the front panel 2PA are positioned in parallel with each other, and the front panel 2PA is disposed at an angle of approximately 90 degrees with respect to the left panel 2PC. At the same time, the left front panel 2PB is inclined with respect to the front panel 2PA and the left panel 2PC. When the support device 12 is in the open configuration, the distance between the rear panel 2PE and the front panel 2PA is first smaller than the sum of the width of the left rear panel 2PD, the width of the left panel 2PC, and the width of the left front panel 2PB. The support member 18 and the third support member 44 are disposed.

  The second opening stopper member 99 is provided on the rail of the first frame 41, and the relative position in the front-rear direction of the third engagement device 45 with respect to the first engagement device 25 is the rear of the box 2 in the opened state. The forward movement of the third frame 43 may be restricted so as to be equal to the relative position of the front panel 2PA with respect to the panel 2PE.

  Since the left rear panel 2PD is inclined with respect to the rear panel 2PE and the left panel 2PC, and the left front panel 2PB is inclined with respect to the front panel 2PA and the left panel 2PC, the box 2 is distorted, and the right panel 2PG and the right front panel The crease between 2PH and the crease between the right panel 2PG and the right rear panel 2PF are folded. When these folds are bent, the body 2P is deformed into an octagonal cylinder. Both the upper flap 2U and the lower flap 2L are arranged so as to extend upward and downward according to the arrangement of the directly connected panels, respectively, and the box is opened.

  When the box 2 is sent to the bending device 50, the support device 12 is displaced to the closed form, and the first support member 18, the second support member 19, and the third support member 44 are returned to the initial positions. When the box 2 is delivered to the folding device 50, the box 2 and the second engagement device 35 are disengaged, so that the second engagement device 35 is second supported by the opening biasing device 38. The member 19 is returned to the initial position, and the opening device 10 returns to the initial state.

  The second support member 19 is provided with a rail, and the second engagement device main body 36 is provided with a slider swingably coupled to the rail. However, the rail and the slider may be provided in any manner so as to slide. May be.

(Bending device)
As shown in FIG. 1, the box making machine 1 has an inner flap 2LI composed of a front lower flap 2LA and a rear lower flap 2LC of a box 2 deformed into a cylindrical shape below a box opening device 10. A bending device 50 is provided for bending the outer flap 2LO formed of the lower left flap 2LB and the lower right flap 2LD inward after being bent inward. The crease between the body 2P and the outer flap 2LO is set so that the ridges and valleys of the corrugation of the core 2M are greatly crushed and more easily bent than the crease between the body 2P and the inner flap 2LI.

  As shown in FIG. 1 and FIG. 12, the folding device 50 includes an inner flap folding device 51 provided in a pair in the front-rear direction below the opening device 10. The inner flap bending device 51 includes a pair of front and rear inner flap bending plates 52 and a fourth actuator 53 that displaces the inner flap bending plate 52. The surface of the inner flap bent plate 52 can be tilted between a state in which the inner flap is bent substantially upward and a state in which the inner flap is bent in the front-rear and inward directions, and the case 2 is lowered and sent out from the opening device 10. The inner flap bent plate 52 is set to face in the front-rear and inward direction. The lower end of the inner flap 2LI of the box 2 is in contact with the upper surface of the inner flap folding plate 52, and the fold between the inner flap 2LI and the body portion 2P is bent inward in the left and right directions, so that the inner flap 2LI It arrange | positions so that the inclination of the bending plate 52 may be followed. When the box 2 is lowered to a predetermined position, the inner flap folded plate 52 is moved substantially upward by the fourth actuator 53, so that the inner flap 2LI forms an angle of about 90 degrees with respect to the body 2P. It can be bent. When the inner flap 2LI and the outer flap 2LO are bent and the box 2 is sent out from the bending device 50, the fourth actuator 53 causes the inner flap to move so that the surface of the inner flap bent plate 52 faces front and rear. The bent plate 52 is tilted.

  As shown in FIG. 12, the outer flap folding device 54 includes a pair of left and right outer flap folding plates 55 </ b> A that are positioned below the inner flap folding plate 52 and extend in the front-rear direction. Each of the outer flap bent plates 55A comes into contact with the outer flap of the box 2 from the left and right inner sides when the box 2 descends from the opening device 10. The outer flap bending device 54 further includes a pair of left and right outer flap bending members 55B extending in the front-rear direction and below the outer flap bending plate 55A. Each of the outer flap bending members 55B has a surface facing inward and left and right so that when the box descends from the opening device 10, it comes into contact with the outer flap 2LO of the box 2 from the left and right outside. It is configured. The outer flap bent plate 55A is coupled to the outer flap bent plate base 55C at the rear end thereof. The outer flap bent member 55B is coupled to the protruding end of the fifth actuator 56 supported by the outer flap bent plate base 55C. The fifth actuator 56 is configured such that the outer flap bending member 55B can be projected and retracted toward the outer flap bending plate 55A. When the fifth actuator 56 pushes the outer flap bent member 55B toward the outer flap bent plate 55A, the outer flap bent member 55B abuts from the outside of the outer flap 2LO, and the outer flap bent plate 55A is moved to the outer flap. The outer flap 2LO can be sandwiched between the outer flap bent plate 55A and the outer flap bent member 55B. The outer flap bending device 54 further includes a sixth actuator 57 that rotates the outer flap bent plate base 55C with the front-rear direction as an axis.

  As shown in FIG. 12A, when the box 2 descends and the outer flap bent member 55B is pushed out toward the outer flap bent plate 55A, the outer flap bent plate 55A and the outer flap bent member The outer flap 2LO is sandwiched between 55B and 55B. As shown in FIG. 12B, the sixth actuator 57 is operated while the outer flap is sandwiched between the outer flap bent plate 55A and the outer flap bent member 55B, and the outer flap bent plate base 55C. Is rotated to the left and right inward so that the crease between the outer flap 2LO and the body 2P is creased (for example, the angle between the body 2P and the outer flap 2LO is approximately 10 to 80 degrees). The outer flap 2LO is bent inwardly to the left and right. Since the outer flap 2LO is bent inward and leftward and the outer flap 2LO is sandwiched between the outer flap bent plate 55A and the outer flap bent member 55B, the upward movement of the box 2 is restricted. Yes. When the support device 12 is lifted by the first actuator 13 while the outer flap 2LO is bent inward and leftward and rightward, the upper flap 2U, the first engagement device 25, the second engagement device 35, and the third engagement device The engagement with 45 is released. Thereafter, as shown in FIG. 12B, when the fifth actuator 56 moves the outer flap bending member 55B to the left and right, the box 2 can be moved in the front-rear direction.

  As shown in FIG. 1, the bending device 50 includes an extrusion device 58 that sends out the box 2 in which the lower flap 2L is bent. The extrusion device 58 includes an extrusion plate 59 that can move back and forth. The extrusion plate 59 extrudes the rear panel 2PE of the box body 2 in which the inner flap 2LI and the outer flap 2LO are bent, whereby the box 2 is formed into a molding device. 61.

  In order to guide the movement of the box 2 at the time of delivery, the bending device 50 further includes guide rollers 60 provided in pairs on the left and right. The guide roller 60 has a plurality of rollers provided in a row in front and rear. Each roller is rotatably provided with the vertical direction as an axis. The guide roller 60 can protrude and inward in the left and right directions, and each roller abuts on the left and right panels 2PC and 2PG of the box 2 when projecting in the left and right directions. In the present embodiment, when the outer flap bending device 54 bends the outer flap 2LO, the guide roller 60 protrudes inward in the left and right directions so that the box 2 does not protrude, and contacts the left and right panels 2PC and 2PG. The body portion 2P is supported. When the box 2 is pushed out by the extruding device 58, the guide roller 60 is kept projecting, so that the box 2 is prevented from moving to the left and right.

  When the delivery of the box 2 is completed, the inner flap 2LI and the outer flap 2LO are bent, and when the box 2 is sent from the folding device 50, the fourth actuator 53 has the front and rear surfaces of the inner flap folding plate 52 front and rear. The inner flap bent plate 52 is tilted so as to face inward. After the box 2 is sent out, the outer flap bent plate base 55C rotates and returns to the position when the box 2 descends from the box opening device 10. The push-out plate 59 moves backward and returns to the position when the box 2 is lowered.

  In order to prevent the box 2 from collapsing after box making, an adhesive is applied to the front side of the outer flap bending device 54 on the surface facing the left and right inner sides of the outer flap 2LO, or the surface where the outer flap 2LO of the inner flap 2LI contacts. An adhesive application device for application may be provided. At this time, in order to sufficiently bond the inner flap 2LI and the outer flap 2LO, the inner flap 2LI may be brought into contact with the outer flap 2LO using the restoring force of the bent inner flap 2LI.

(Molding equipment)
As shown in FIG. 1, the box making machine 1 includes a forming device 61 for forming the body 2P of the box 2 with higher accuracy. The box 2 extruded by the extrusion device 58 is moved to a molding position that is a reference for molding, and the left and right panels 2PC and 2PG are expanded to the left and right, and the left and right panels 2PC and 2PG are pressed against the mold. The box 2 is molded.

  As shown in FIG. 1, the forming device 61 includes a guide roller 60 that is disposed on the front side of the bending device 50 and carries the box 2 pushed out by the pushing device 58 forward. When the guide roller 60 protrudes inward left and right, each roller contacts the left panel 2PC or the right panel 2PG of the box 2 and moves the box 2 forward. The box 2 carried forward is locked by the front stopper member 62 provided in the front, and becomes a molding position. The front stopper member 62 is formed so as to be able to protrude and retract so that the position of the box 2 is set as a molding position. When the box 2 is conveyed to the molding device 61, the front stopper member 62 abuts against the front panel 2PA of the box 2. The movement of 2 forward is restricted. When the molding of the box 2 is finished, the front stopper member 62 is sunk and the box 2 can be moved forward.

  As shown in FIGS. 13 and 14, the molding apparatus 61 includes a mold member 63. The mold member 63 is formed in a pair symmetrically about the center line. The mold member 63 includes two base surfaces 64 that are formed on a surface orthogonal to the left-right direction, face inward in the left-right direction, and are separated from each other in the front-rear direction. The two base surfaces 64 are the length of the box 2 in the quadrangular box state (for example, the width when the right front panel 2PH, the right panel 2PG, and the right rear panel 2PF are connected in a plane in the octagon box 2). When the molding is performed, the box 2 is sandwiched by the four base surfaces 64 in the left-right and front-rear directions. The mold member 63 further includes a recess 65 that is recessed leftward and rightward with respect to the base surface 64. The recess 65 is formed in a surface orthogonal to the left-right direction, and has a bottom surface 66 facing inward in the left-right direction, a side wall surface 67 extending forward from the front end of the bottom surface 66 and inward in the left-right direction, and facing the rear side. And a side wall surface 67 that extends rearward from the rear end of the bottom surface 66 and extends inward from side to side and faces forward. The two side wall surfaces 67 are inclined so that the front-rear width of the recess 65 increases from the bottom surface 66 toward the base surface 64 side. The width in the front-rear direction of the recess 65 is formed to be the same as the width in the front-rear direction of the right panel 2PG. The width in the vertical direction of the mold member 63 is formed to be shorter than the height of the box 2. Each of the mold members 63 is connected to a mold member actuator 63 </ b> A that expands and contracts inwardly in the left and right directions.

  The forming device 61 further includes a pair of left and right body expanding devices 68 for adsorbing and expanding on the outer surfaces of the left and right panels 2PC and 2PG. Each of the left and right trunk expanding devices 68 includes a vacuum adsorption device 69. The trunk expanding device 68 can be displaced in the left-right direction, and when the trunk expanding device 68 is positioned inward, the vacuum suction device 69 is adsorbed to the trunk 2P of the box 2. Each of the reduced pressure adsorption devices 69 is connected to an adsorption device actuator 68A that expands and contracts inwardly in the left and right directions. Therefore, the reduced pressure adsorption device 69 is configured to be able to appear inward in the left and right directions. In this embodiment, the two vacuum adsorption devices 69 are provided side by side at the same height. The mold member 63 and the body expanding device 68 are arranged on the left and right of the box 2 in the molding position, and the body expanding device 68, the guide roller 60, and the mold member 63 are arranged in this order from the top.

  The molding device 61 includes a push-up device 70 provided below the box 2 at the molding position. The push-up device 70 has a surface facing upward at the top, and a projecting piece that extends to the left and right continuously to the rear end of the surface, and a push-up plate portion 71 that is provided so as to be displaceable up and down, and vertically expands and contracts. And a push-up plate portion actuator 71A for moving the push-up plate portion up and down.

  As shown in FIG. 1, in the present embodiment, the molding device 61 further includes an upper stopper member 72. The upper stopper member 72 is a plate-like member having a surface that extends in the vertical direction, and is provided at a height that makes contact with the upper flap 2U of the box 2 at the molding position.

  As shown in FIG. 13, the box 2 in the opened state sent from the folding device 50 is sent forward along the center line from the folding device 50 by the pushing device 58. The box 2 advances forward along the guide roller 60 and is locked at the molding position by the front stopper member 62. When the box 2 is in the molding position, the guide roller 60 is retracted to the left and right, and the mold member actuator 63A is actuated at an appropriate time, so that the left and right mold members 63 protrude to the left and right. As a result, the left mold member 63 contacts the front lower end of the left front panel 2PB at the front base surface 64, and contacts the rear lower end of the left rear panel 2PD at the rear base surface 64. The right mold member 63 is in contact with the right front panel 2PH at the front base surface 64, and is in contact with the right rear panel 2PF at the base surface 64 on the rear side. Next, when the suction device actuator 68A is actuated, the two left and right decompression suction devices 69 protrude leftward and rightward and are attracted to the corresponding left panel 2PC and right panel 2PG, respectively.

  As shown in FIGS. 13 and 14, after the left and right reduced pressure adsorption devices 69 are adsorbed to the left panel 2PC and the right panel 2PG, respectively, the reduced pressure adsorption devices 69 move left and right while adsorbing to the panels. While the base surface 64 of the left mold member 63 is in contact with the left front panel 2PB and the left rear panel 2PD, the vacuum suction device 69 moves to the left outward, and the left panel 2PC is pulled outward to the left. The fold between 2PB and the left panel 2PC is bent so as to protrude leftward, and the fold between the left panel 2PC and the left rear panel 2PD is bent so as to protrude leftward. While the base surface 64 of the right mold member 63 is in contact with the right front panel 2PH and the right rear panel 2PF, the trunk expanding device 68 moves right outward, and the right panel 2PG is pulled right outward, so the right front The fold between the panel 2PH and the right panel 2PG is bent so as to protrude rightward, and the fold between the right panel 2PG and the right rear panel 2PF is bent so as to protrude rearward to the right. The vacuum suction device 69 moves to the left and right until the left panel 2PC is in surface contact with the bottom of the left mold member 63 and the right panel 2PG is in surface contact with the bottom of the right mold member 63. As a result, the left front panel 2PB and the left rear panel 2PD are in surface contact with the side wall surface 67, and the creases provided at the front and back of the left panel 2PC are along the bent portion between the bottom of the mold member 63 and the side wall surface 67. Can be folded. Further, the right front panel 2PH and the right rear panel 2PF are in surface contact with the side wall surface 67, and the folds provided at the front and back of the right panel 2PG are bent along the bent portion between the bottom portion of the mold member 63 and the side wall surface 67. It is done.

  When the vacuum suction device 69 moves left and right outwards and the body 2P of the box 2 is in contact with the mold member 63, it is pushed up until the outer flap 2LO is bent at approximately 90 degrees with respect to the body 2P. The plate portion actuator 71A moves the push-up plate portion 71 upward from below the box 2. Furthermore, when the outer flap 2LO is bent inward, if the lower end portions of the left and right outer flaps 2LO come into contact with each other, the left panel 2PC and the right panel 2PG of the trunk portion 2P are pushed out to the left and right, and the trunk The width of the part 2P is widened. In the present embodiment, since the upper stopper member 72 is provided, when the box 2 is pushed up by the push-up plate portion 71, the box 2 moves upward and does not protrude.

  When the body portion 2P is formed and the outer flap 2LO is bent, the guide roller 60 moves inward in the left and right directions, and the suction of the body portion 2P of the body portion expanding device 68 to the left panel 2PC and the right panel 2PG is released, By the suction device actuator 68A, the trunk expanding device 68 is retracted to the left and right. Further, the mold member 63 is also retracted leftward and rightward by the mold member actuator 63A, and the front stopper member 62 is retracted downward. Next, the push-up plate portion 71 moves forward, the rear panel 2PE of the box 2 is pushed out by the projecting piece provided at the rear end of the push-up plate portion 71, and the box 2 moves forward and is sent out. When the suction of the body expanding device 68 is released, the lower ends of the left and right outer flaps 2LO come into contact with each other, so that the body 2P of the box 2 does not contract in the left-right direction and is maintained in an octagonal cylindrical shape. The

(Taping device and straightening device)
As shown in FIG. 1, the box making machine 1 conveys the box 2 sent out from the molding device 61 forward, and affixes a tape to the lower flap 2L of the box 2 so that the box 2 is in a bottomed state. A deforming taping device 81 is provided.

  The taping device 81 is disposed on the front side of the bending device 50, and the lower flap 2L is bent by the bending device 50. Further, the taping device 81 further forwards the box 2 in which the body portion 2P is formed by the forming device 61. 82. The conveyance device 82 includes a frame 83 and a pair of left and right side conveyors 85 provided on both sides of the center line and extending in the front-rear direction. The side conveyor 85 is a well-known belt conveyor, and includes a belt wound around a roller that is rotated by a motor about an axis up and down. The belt abuts on the body 2P of the box 2 and conveys the box 2 forward. . On the upper side of the side conveyor 85, a placement surface 86 that is a surface directed upward is provided.

  The taping device 81 further taps the adhesive tape T along the center line to the lower part of the front panel 2PA, the lower flap 2L, and the lower part of the rear panel 2PE of the box 2 passing through the upper part from the rear to the front. A unit 87 is provided. The taping unit 87 is disposed between the left and right side conveyors 85. The taping unit 87 cuts the adhesive tape T with a cutter when the box 2 passes a predetermined position.

  As shown in FIG. 15, the box making machine 1 further includes the body 2 </ b> P of the box 2 that is transported by the transport device 82 when the taping device 81 applies a tape to the lower flap 2 </ b> L of the box 2. A straightening device 91 that abuts on the side end face and straightens the body 2P of the box 2 is provided. The correction device 91 is disposed on the placement surface 86 of the pair of left and right side conveyors 85. As shown in FIGS. 15 and 16, the correction device 91 includes a correction support base 92 provided on the placement surface 86, a slide member 93 provided on the correction support base 92, and a slide member 93. And a straightening biasing device 97 connected to the arm member 95 and the slide member 93. The slide member 93 is formed so as to be slidable toward the left and right inward with respect to the correction support base 92. The correction device support column 94 is provided so as to protrude upward from the upper surface of the slide member 93. The base end of the arm member 95 is rotatably supported by the correction device support column 94, the protruding end extends to the left and right inward, and a roller 96 is provided on the protruding end so as to be rotatable about the vertical axis. One end of the correction biasing device 97 is coupled to a position on the left and right outside of the correction device support column 94 of the arm member 95, and the other end side is coupled to the slide member 93.

  When the arm member 95 is not pressed along the path direction of the box 2, the arm member 95 is in a protruding position that protrudes most inward in the left-right direction toward the movement path of the box 2. When the arm member 95 is pressed along the path direction of the box 2, the arm member 95 rotates around the correction device support column 94 against the urging force of the correction urging device 97, and the roller 96 is moved from the left and right inward. The retreat position is moved left and right outward. When the pressure applied to the arm member 95 is released, the arm member 95 is returned from the retracted position to the protruding position by the correction biasing device 97.

  The correction device 91 is adjusted so that the left and right rollers 96 are positioned on the front side of the taping unit 87. Further, at the protruding position, the left and right rollers 96 are in contact with the left front panel 2PB and the right front panel 2PH of the box 2, respectively, and at the retracted position, the slide member 93 is positioned so as not to prevent the box 2 from moving forward. The amount of protrusion to the left and right inward is adjusted. Further, the left and right correction devices 91 are configured symmetrically with respect to the path direction of the box 2, and the left and right correction devices 91 are configured to have the same amount of protrusion to the left and right.

  When the box 2 is conveyed forward from the rear end of the side conveyor 85, the correction device 91 comes into contact with the left front panel 2PB and the right front panel 2PH of the box 2, respectively. As the box 2 moves forward, the correction device 91 presses the left front panel 2PB and the right front panel 2PH backward. When the front part of the box 2 composed of the left front panel 2PB, the front panel 2PA, and the right front panel 2PH is distorted so as to protrude greatly to the left and right, the correction device 91 located in the protruding direction is the other correction device 91. Rather than pressing the front part of the box 2. Therefore, distortion in the protruding direction is suppressed, and the front part of the box 2 is corrected so as to be symmetrical.

  After the correction device 91 corrects the front portion of the box 2, when the box 2 is conveyed forward, the correction device 91 contacts the left panel 2PC and the right panel 2PG. Further, when the box 2 is conveyed forward, the left and right correction devices 91 come into contact with the left rear panel 2PD and the right rear panel 2PF, respectively. The left and right correction devices 91 are in contact with the left rear panel 2PD and the right rear panel 2PF, respectively, and the rear part of the box 2 including the left rear panel 2PD, the rear panel 2PE, and the right rear panel 2PF protrudes greatly to the left and right. Even when it is distorted, the shape of the rear part of the box 2 is corrected as much as possible by the correction device 91 in the same manner as the front part of the box 2. When the correction device 91 comes into contact with the left rear panel 2PD and the right rear panel 2PF, respectively, the rear part of the box 2 is pressed from the left and right, so that the rear part of the box 2 is corrected to be symmetrical.

  After the front part of the box 2 is corrected by the correcting device 91, the taping unit 87 causes the adhesive tape T to be applied to the lower part of the front panel 2PA, the butted parts of the lower left flap 2LB and the lower right flap 2LD, and the rear panel. It is affixed continuously to the lower part of 2PE front and back. The correction of the rear part of the box 2 by the correction device 91 is performed while the adhesive tape T is stuck to the butted portion of the lower left flap 2LB and the lower right flap 2LD. When the cut adhesive tape T is affixed to the lower portion of the rear panel 2PE, the box 2 is in a bottom assembly state and is fed forward by the side conveyor 85.

  The straightening device 91 is provided with an actuator. The straightening device 91 abuts on the box 2 immediately before the taping starts, and continues to abut on the box 2 while the taping is being performed. May be configured to be separated from the box 2.

  In the present embodiment, the fourth actuator 53, the fifth actuator 56, the sixth actuator 57, the mold member actuator 63A, and the adsorption device actuator 68A are all actuators using an air cylinder and are operated by expansion and contraction. Is not limited, and may be performed by other methods (such as a linear motor).

  The effect of the box making machine 1 configured as described above will be described. As shown in FIG. 10, the opening device 10 provided in the box making machine 1 indicates the relative positions of the rear panel 2PE, the left panel 2PC, and the front panel 2PA of the box 2 in the opened state. Since the body 2 moves so as to be in the relative positions of the rear panel 2PE, the left panel 2PC, and the front panel 2PA, the box 2 can be formed with higher accuracy than when the two panels are moved. It is.

  In addition, the first engagement device 25, the second engagement device 35, and the third engagement device 45 are not provided with actuators, and the rear panel 2PE, the left panel 2PC, and the front panel 2PA of the box 2 are relative to each other. Can be moved so that the relative positions of the rear panel 2PE, the left panel 2PC, and the front panel 2PA of the box 2 in the opened state are simplified. It is possible.

  By changing the position of the left end (X in FIG. 9) of the box 2 folded flat when supplied to the box opening device 10 and the position of the box opening stopper member 48, the left panel 2PC and the rear panel It is possible to open the box in an opened state in which the distance in the left-right direction from the left end of 2PE (Z in FIG. 10) and the distance in the left-right direction from the left end of the left panel 2PC and the front panel 2PA are different. is there. About the position of the left end (X in FIG. 9) of the box 2 folded flat when supplied to the box opening device 10 and the front-rear direction of the crease between the rear panel 2PE and the left rear panel 2PD and the point Q The distance (Y in FIG. 9) is made equal, and the position with respect to the opening stopper member 48 is changed, so that the opening device 10 opens the body 2P of the box 2 so as to have a quadrangular cylindrical shape. It is also possible to do.

  Moreover, since the box making machine 1 performs molding from the outside of the box 2, the inside of the box 2 can be maintained open upward. For this reason, the article can be easily accommodated. Further, since the molding device 61 is not inserted inside the body portion 2P, a drive mechanism for inserting and removing the molding device 61 is not required, and the box making machine 1 can be simplified and downsized.

<< Second Embodiment >>
The box making machine 200 according to the second embodiment has a configuration different from that of the first embodiment only in the box opening device 201. As shown in FIGS. 17 and 18, the opening device 201 is not provided with the second engagement device 35, and the second support member 19 and the third engagement device main body 46 are connected by the connection tool 47. However, it has the same configuration as the opening device 10 except that the second opening stopper member 99 is always provided. The second opening stopper member 99 is provided on the rail of the first frame 41 and restricts the forward movement of the third frame 43. As shown in FIG. 17, when the support device 12 is in the closed configuration, the relative position of the third engagement device 45 with respect to the first engagement device 25 is such that the rear panel of the box 2 folded flat. The 1st support member 18 and the 3rd support member 44 are arranged so that it may become equal to the relative position of front panel 2PA of box 2 folded flat to 2PE.

  As shown in FIG. 18, when the support device 12 is displaced from the closed configuration to the open configuration, the second support member 19 and the third engagement device main body 46 are connected by the connection tool 47. The combined device body 46 is pushed forward from the second support member 19. When the third engagement device main body 46 is pushed forward, the third frame 43 moves forward and abuts against the second opening stopper member 99. At the same time, the third engagement device 45 moves to the left along the rail provided on the third frame 43, and the third support member 44 contacts the opening stopper member 48. The support device 12 is in the open configuration by adjusting the fixing position of the third frame 43 on the rail of the opening stopper member 48 and the fixing position of the second opening stopper member 99 on the rail of the first frame 41. At this time, the relative position of the third engagement device 45 with respect to the first engagement device 25 is opened in an octagonal cylindrical shape with respect to the rear panel 2PE of the box 2 in the opened state in which the octagonal cylindrical shape is opened. The first support member 18 and the third support member 44 are arranged so as to be equal to the relative position of the front panel 2PA of the box 2 in the opened state.

  As shown in FIG. 18, when the support device 12 is in the open configuration, the rear panel 2PE supported by the first engagement device 25 and the front panel 2PA supported by the third engagement device 45 are arranged in parallel. The distance between the rear panel 2PE supported by the first engagement device 25 and the front panel 2PA supported by the third engagement device 45 is greater than the sum of the widths of the left rear panel 2PD, left panel 2PC and left front panel 2PB. It is small and arranged to be larger than the width of the left panel 2PC. Since the distance between the rear panel supported by the first engagement device 25 and the front panel 2PA supported by the third engagement device 45 is set, the crease between the left rear panel 2PD and the left panel 2PC The crease between the left panel 2PC and the left front panel 2PB is folded, and the left panel 2PC protrudes leftward. Since the left panel 2PC protrudes leftward, the left rear panel 2PD is disposed to be inclined with respect to the rear panel 2PE, and the left front panel 2PB is disposed to be inclined with respect to the front panel 2PA. Like the left rear panel 2PD, the right rear panel 2PF is also inclined with respect to the rear panel 2PE, and the right front panel 2PH is also inclined with respect to the front panel 2PA like the left front panel 2PB. Two trunk portions 2P are formed in an octagonal cylindrical shape.

  The effect of the box making machine 200 configured as described above will be described. As shown in FIGS. 17 and 18, the opening device 201 provided in the box making machine 200 can be simplified in configuration as compared with the opening device 201 according to the first embodiment.

<< Third Embodiment >>
The box making machine 300 according to the third embodiment has a configuration different from that of the first embodiment only in the box opening device 301. As shown in FIGS. 19, 20, and 21, the opening device 301 has the same configuration as the opening device 10 according to the first embodiment, but the first engagement device 25 is the first. The support member 18 is supported to be displaceable in the extending direction, the second actuator 28 is provided between the first engagement device 25 and the first support member 18, and the third support member 44 extends in the left-right direction. Provided, the third support member 44 is connected to the second engagement device main body 36 via the connector 47, and the third engagement device 45 is supported so as to be displaceable in the extending direction of the third support member 44. The difference is that a seventh actuator 49 is provided between the third support member 44 and the third engagement device 45. The third support member 44 is coupled to a slider that is slidably coupled to the rail of the third frame 43 on the back surface thereof. In the opening device 301, the opening stopper member 48 is not provided on the rail of the third frame 43, and the rotation angle of the connection tool 47 with respect to the second engagement device body 36 is set in the second engagement device body 36. A connector stopper member 47S is provided to restrict the movement.

  As shown in FIGS. 19 and 20, the second actuator 28 displaces the first engagement device 25 in the extending direction with respect to the first support member 18. In the present embodiment, the second actuator 28 is an extendable air cylinder provided in the extending direction of the first engagement device 25, and expands and contracts in the extending direction of the first support member 18. One end of the second actuator 28 is coupled to the first support member 18, and the other end of the second actuator 28 is coupled to the end of the first engagement device 25.

  As shown in FIGS. 19 and 20, the seventh actuator 49 displaces the third engagement device 45 in the extending direction with respect to the third support member 44. In the present embodiment, the seventh actuator 49 is an expandable / contractable air cylinder provided in the extending direction of the third engagement device 45, and expands / contracts in the extending direction of the third support member 44. One end of the seventh actuator 49 is coupled to the third support member 44, and the other end of the seventh actuator 49 is coupled to the end of the third engagement device 45.

  Next, the operation of the opening device 301 will be described. As shown in FIG. 19, as in the first embodiment, when the support device 12 is in the closed configuration, the third engagement device 45 is relative to the first engagement device 25 as in the first embodiment. The relative position of the front panel 2PA of the box 2 folded flat with respect to the rear panel 2PE of the box 2 folded flat, and the second position relative to the first engagement device 25 The first support is such that the relative position of the engagement device 35 is equal to the relative position of the left panel 2PC of the box 2 folded flat with respect to the rear panel 2PE of the box 2 folded flat. The member 18, the 2nd support member 19, and the 3rd support member 44 are arrange | positioned.

  As shown in FIG. 20, when the support device 12 changes from the closed configuration to the open configuration, the second support member 19 is opened with respect to the first support member 18 so as to form an angle of approximately 90 degrees. Further, the second actuator 28 moves the first engagement device 25 in the extending direction of the first support member 18, so that the relative position of the first engagement device 25 in the left-right direction with respect to the second engagement device 35 is increased. Is equal to the relative position in the left-right direction of the rear panel 2PE with respect to the left panel 2PC of the box 2 in the opened state. Since the left panel 2PC is connected to the rear panel 2PE by the left rear panel 2PD, the second engagement device 35 moves along the second support member 19 and the second engagement device 35 with respect to the first engagement device 25. The relative position in the front-rear direction of the left panel 2PC with respect to the rear panel 2PE of the box 2 in the opened state is equal to the relative position in the front-rear direction. Therefore, when the support device 12 is in the open configuration, the relative position of the second engagement device 35 with respect to the first engagement device 25 is relative to the left panel 2PC with respect to the rear panel 2PE of the box 2 in the opened state. The first support member 18 and the second support member 19 are arranged so as to be equal to each other position.

  When the support device 12 changes from the closed configuration to the open configuration, the third support member 44 is pushed forward of the second support member 19 and moved to the left along the rail of the third frame 43, as in the first embodiment. To do. When the support device 12 changes from the closed configuration to the open configuration, the connector stopper member 47S restricts the third support member 44 from moving to the left beyond a predetermined position. When the support device 12 changes from the closed configuration to the open configuration, the third support member 44 is positioned in the left-right direction by the connector stopper member 47S, and the seventh actuator 49 connects the third engagement device 45 to the third support member 44. By moving in the extending direction, the relative position of the third engagement device 45 in the left-right direction with respect to the second engagement device 35 is changed to the left and right of the front panel 2PA with respect to the left panel 2PC of the box 2 in the opened state. Equal to the relative position in the direction. The front panel 2PA is connected to the left panel 2PC via the left front panel 2PB, and the third frame 43 is supported by the first frame 41 and the second frame 42 so as to be movable back and forth. Therefore, when the support device 12 is in the open configuration, the relative position in the front-rear direction of the third engagement device 45 with respect to the second engagement device 35 is the front panel 2PA with respect to the left panel 2PC of the box 2 in the opened state. The third frame 43 moves rearward so as to be equal to the relative position in the front-rear direction. Therefore, when the support device 12 is in the open configuration, the relative position of the third engagement device 45 with respect to the second engagement device 35 is relative to the left panel 2PC of the opened box 2 relative to the front panel 2PA. The second support member 19 and the third support member 44 are arranged so as to be equal to each other position.

  When the support device 12 is in the open configuration, the relative position of the second engagement device 35 with respect to the first engagement device 25 is the relative position of the left panel 2PC with respect to the rear panel 2PE of the box 2 in the opened state. And the relative position of the third engagement device 45 with respect to the second engagement device 35 is equal to the relative position of the front panel 2PA with respect to the left panel 2PC of the box 2 in the opened state. The first support member 18, the second support member 19, and the third support member 44 are disposed. Due to the arrangement of the first support member 18, the second support member 19, and the third support member 44, the left rear panel 2PD is inclined with respect to the rear panel 2PE and the left panel 2PC, and the left front panel 2PB is the front panel 2PA. And it inclines with respect to left panel 2PC. Therefore, as in the first embodiment, when the support device 12 is in the open configuration, the box 2 is deformed into an open state having an octagonal cylindrical body 2P.

  The displacement of the support device 12, the driving of the second actuator 28, and the driving of the seventh actuator 49 may be performed simultaneously or separately. In the present embodiment, both the second actuator 28 and the seventh actuator 49 are actuators that expand and contract by an air cylinder, but are not limited to air cylinders, and extend and contract by a different method (such as a linear motor). May be.

  Next, the effect of the box making machine 300 provided with the box opening device 301 will be described. As shown in FIG. 21, the box making machine 300 not only opens the octagonal box 2 into an opened octagonal cylinder but also opens the octagonal box 2 into a quadrangular cylinder. Is also possible. When the octagonal box 2 is opened into a quadrangular cylindrical shape, the distance in the left-right direction from the point P to the left end of the box 2 is the front-rear direction between the fold between the rear panel 2PE and the left rear panel 2PD and the point Q. The box 2 folded so as to be equal to the distance about is placed. When the support device 12 is displaced from the closed configuration to the open configuration, the second actuator 28 maintains the first engagement device 25 in the initial position, and the seventh actuator 49 maintains the third engagement device 45 in the initial position. Good. At this time, the left panel 2PC is disposed at an angle of 90 degrees with respect to the front panel 2PA, the rear panel 2PE is disposed at an angle of 90 degrees with respect to the left panel 2PC, and the rear panel 2PE Since the left end and the left panel 2PC are arranged side by side, the crease between the front panel 2PA and the right front panel 2PH and the crease between the rear panel 2PE and the right rear panel 2PF are folded, and the body part 2P deform | transforms into the square cylinder shape which has substantially rectangular shape. After opening the octagonal box 2 into a quadrangular cylindrical shape, the second actuator 28 moves the first engagement device 25 to the right side, and the seventh actuator 49 moves the third engagement device 45 to the right side. Since the second engagement device 35 and the third engagement device 45 slide rearward, the body portion 2P is opened in an octagonal cylindrical shape.

  It is also possible to open the quadrangular box 3 into an open state having a quadrangular cylindrical body 3P. When the quadrangular box 3 is opened to the open state, the second actuator 28 maintains the first engagement device 25 at the initial position, similarly to the case where the octagonal box 2 is opened into a quadrangular cylindrical shape. And the 7th actuator 49 should just maintain the 3rd engagement apparatus 45 in an initial position. At this time, the left panel 3PC is disposed at an angle of 90 degrees with respect to the front panel 3PA, and the rear panel 3PE is disposed at an angle of 90 degrees with respect to the left panel 3PC. 3P is transformed into a rectangular cylinder having a substantially rectangular shape.

  When the quadrangular box 3 is opened in a quadrangular cylinder state by the box opening device 301, the forming apparatus 61 may be omitted and the box making may be performed. When the quadrangular box 3 is opened to a quadrangular cylindrical state using the molding device 61, the body expanding device 68 is maintained in a position retracted to the left and right, and the base surface 64 of the mold member 63 is the body section. The quadrangular box 3 is formed by coming into contact with the four corners 2P or 3P. When the outer flap 2LO is folded, the quadrangular box 3 is supported by the mold member 63, so that the quadrangular box 3 does not protrude upward and is supported by the mold member 63.

  By changing the length when the second actuator 28 and the seventh actuator 49 are driven, the angle formed by the left panel 2PC and the left rear panel 2PD and the angle formed by the left panel 2PC and the left front panel 2PB are changed. The box 2 having a different angle between the panel 2PC and the left rear panel 2PD and a different angle between the left panel 2PC and the left front panel 2PB can be opened.

  Although the description of the specific embodiment is finished as described above, the present invention is not limited to the above embodiment and can be widely modified. Although the box making machine 1 according to the present embodiment does not have a configuration for storing articles in the boxes 2 and 3, the articles are stored in the boxes 2 and 3 after the lower flap 2 </ b> L is sealed. You may provide the structure which seals the flap 2U. In addition, each configuration of the above embodiment is not an essential configuration, and can be appropriately selected.

  In the second embodiment, the first support member 18 supports the rear panel 2PE, the third engagement device 45 supports the front panel 2PA, and the support device 12 includes the first engagement device 25 and the third engagement device. 45 is arranged such that the relative arrangement of the rear panel 2PE and the front panel 2PA of the box 2 in the opened state is relative to the panel supported by the first support member 18. The combination of the panels supported by the third support member 44 is not limited to the combination of the front panel 2PA and the rear panel 2PE. The panel supported by the first support member 18 and the panel supported by the third engagement device 45 may be connected via at least one panel. The support device 12 sets the relative arrangement of the panel supported by the first support member 18 and the panel supported by the third engagement device 45 as the relative arrangement of the corresponding panels of the box 2 in the opened state. Thus, if the 1st supporting member 18 and the 3rd engagement apparatus 45 are arrange | positioned, the box 2 will be deform | transformed into an open state.

  In the above embodiment, the first engagement device 25, the second engagement device 35, and the third engagement device 45 are all engaged with the upper flap 2U by the pins 27 provided on the first engagement device 25, the second engagement device 35, and the third engagement device 45, respectively. However, the engagement means between the engagement devices 25, 35, 45 and the box 2 is not limited to the pin 27. In the first and third embodiments, the first engagement device 25 includes a reduced pressure adsorption device that adsorbs to the rear panel 2PE, the second engagement device 35 includes a reduced pressure adsorption device that adsorbs to the left panel 2PC, The three engagement devices 45 may be provided with a reduced pressure adsorption device that adsorbs to the front panel 2PA, and each may be decompressed and detachably engaged with a corresponding panel. In the second embodiment, the first engagement device 25 includes a reduced pressure adsorption device that adsorbs to the rear panel 2PE, and the second engagement device 35 includes a reduced pressure adsorption device that adsorbs to the front panel 2PA. May be detachably engaged with the corresponding panel. These vacuum adsorption devices may be the same as the vacuum adsorption device 69 provided in the molding device 61.

  In the opening devices 10, 201, 301 according to the first embodiment, the second embodiment, and the third embodiment, an L-shaped metal fitting in which two plate members are connected in an L shape is used as the connection tool 47. Yes. The end of one end of the L-shaped bracket and the second engagement device main body 36 or the second support member 19 are connected via a hinge, and the end of the other end of the L-shaped bracket and the third engagement device 45 are connected to each other. Are connected via a hinge, and when the support device 12 is in the closed configuration, the connection portion of the two plate members constituting the L-shaped bracket is configured to protrude rearward. A torsion coil spring is provided on each of the two hinges coupled to both ends of the L-shaped bracket, and the torsion coil spring allows the plate material on one end side of the L-shaped bracket and the second engagement device 35 or the second support member 19 to be connected. The plate member on the other end side of the L-shaped bracket and the third engagement device 45 may be urged so as to form a predetermined angle. By using the biasing force of the torsion coil spring, the shape of the body portion 2P can be determined more accurately.

1: Box making machine 10 according to the first embodiment: Box opening device 12: Support device 15: Parallel link mechanism 16: Swing link 17: Intermediate link 18: First support member (rear support member)
19: Second support member (lateral support member)
25: First engagement device (rear engagement device)
27: Pin 28: Second actuator (rear drive device)
35: Second engagement device (lateral engagement device)
44: Third support member (front support member)
45: Third engagement device (front engagement device)
49: Seventh actuator (front drive device)
55A: outer flap bent plate 55B: outer flap bent member 56: fifth actuator (displacement device)
61: Molding apparatus 2PA: Front panel (front side plate)
2PB: Left front panel (first intermediate side plate)
2PC: Left panel (lateral plate)
2PD: Left rear panel (second intermediate side plate)
2PE: Rear panel (rear side plate)
200: Box making machine 201 according to the second embodiment: Box opening device 300 according to the second embodiment: Box making machine 301 according to the third embodiment: Box opening device according to the third embodiment

Claims (14)

An octagonal cylindrical body portion having a plurality of side plates extending vertically and connected to each other through a crease, a plurality of upper flaps provided on the upper edge of the body portion, and a lower edge of the body portion A box making machine provided with a box opening device that changes a box having a plurality of lower flaps provided from a state in which the body is folded flat into an open state in which the body forms an octagonal cylinder. There,
The opening device is an engagement device that detachably engages with at least one of the side plate of the body portion, an upper flap provided on an upper edge of the side plate, and a lower flap provided on a lower edge of the side plate. A support device having a support member provided with
The support member supports the side plate by the engagement device provided in the support device engaging the side plate,
Among the support members, at least two of the support members respectively support the two side plates connected to each other via one or more side plates,
The support device is configured such that a relative arrangement of the engagement devices provided on the support member is equal to a relative arrangement of the side plates corresponding to the engagement devices of the box folded flat. The closed form in which the support member is disposed and the relative arrangement of the engagement devices provided on the support member are in the opened state, and the relative positions of the side plates corresponding to the engagement devices of the box are relative to each other. A box making machine configured to be displaceable to an open configuration in which the support member is arranged to be equal to the arrangement. The box is configured to be deformable so as to close the opening below the box by folding the lower flap.
The body of the box in the opened state has the same shape as the body of the box deformed so as to close the opening below the box by folding the lower flap. The box making machine according to claim 1.   The box making machine according to claim 1, wherein the support device includes three support members. The support device includes a front support member that supports a front plate, a rear support member that supports a rear plate disposed in parallel with the front plate in the opened state, and a first intermediate side plate that is one on the front plate. A lateral support member connected to the rear side plate and supporting the lateral side plate connected to the rear side plate via one second intermediate side plate,
When the support device is in the open configuration, the lateral support member is opened at an angle of approximately 90 degrees with respect to the rear support member, and the front support member is first with respect to the rear support member. The box making of Claim 3 arrange | positioned in parallel via the distance smaller than the sum of the width | variety of an intermediate | middle side plate, the said lateral side plate, and the said 2nd intermediate | middle side plate, and larger than the width | variety of the said lateral side plate. Machine.   The box is in a state in which a fold between the second intermediate side plate and the rear side plate or a fold between the second intermediate side plate and the side plate is folded flat. The box making machine according to claim 4, wherein the box part forms a side edge of the body part. When the support device is in the closed configuration,
Among the front support member, the lateral support member, and the rear support member, the side plate corresponding to one of the support members is supported at the position of the side plate with respect to the support member when the support device is in the open configuration. And
The said support member other than said one support member supports the said engagement apparatus provided in the said support member so that displacement in the extension direction is possible, The manufacturing of Claim 4 or Claim 5 characterized by the above-mentioned. Box machine. The front support member supports the front engagement device so as to be displaceable in the extending direction;
The lateral support member supports the lateral engagement device so as to be displaceable in the extending direction;
The rear support member supports the rear engagement device so as to be displaceable in the extending direction;
A front drive device that displaces the front engagement device relative to the front support member along the extending direction of the front support member is provided between the front engagement device and the front support member.
A rear drive device is provided between the rear engagement device and the rear support member to displace the rear engagement device with respect to the rear support member along the extending direction of the rear support member,
When the support device is deformed from the closed configuration to the open configuration, the front driving device displaces the front engagement device from an initial position to a predetermined driving position, and the rear driving device The box making machine according to any one of claims 4 to 6, wherein the rear engagement device is displaced from an initial position to a predetermined post drive position.   The box is opened in a rectangular tube shape by stopping the front drive device and the rear drive device and deforming the support device from the closed configuration to the open configuration. The box making machine according to claim 7. The support device includes a base, a pair of isometric swing links pivotally connected to the base, and an intermediate link pivotally connected to the respective distal ends of the swing links. A parallel link mechanism with
The rear support member is supported by the intermediate link;
The box making machine according to any one of claims 4 to 8, wherein the lateral support member is supported by one of the swing links. The box is formed by two parallel plate members and a plate-like member having a core having a corrugated cross section sandwiched between them.
The upper end surface of the upper flap is provided with a corrugated cross section of the core,
The box making machine according to any one of claims 1 to 9, wherein each of the engagement devices has a pin that pierces an end face of the upper flap. A bending device for holding and bending the lower flap;
The bending device includes two members arranged via a gap, and a displacement device that changes the distance between the two members,
The displacement device changes the distance between the two members, whereby the lower flap is gripped by the two members, and the engagement between the engagement device and the upper flap can be released. The box making machine according to any one of claims 1 to 10.   The box making machine according to any one of claims 1 to 11, further comprising a molding device that molds the barrel portion into an octagonal cylinder by expanding the barrel portion in a predetermined width direction. Machine.   The said shaping | molding apparatus spreads the said trunk | drum to a predetermined | prescribed width direction by engaging with the said lower flap and arrange | positioning in a predetermined position, bending the said lower flap. Box making machine.   The said shaping | molding apparatus adsorbs | sucks to the outer surface of the said side plate of the said trunk | drum, and spreads the said trunk | drum in a predetermined width direction by arrange | positioning the said side plate in a predetermined position. The box making machine according to 13.

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