JP6125183B2 - Box making equipment - Google Patents

Description

  The present invention relates to a box making apparatus.

  Generally, a cardboard box is adopted as a packing means that is repeatedly used for conveying articles. The cardboard boxes are collected as folded cardboard boxes folded in a plane before use. The folded corrugated cardboard box is transformed into a rectangular tube shape having two openings, and then one opening is closed to pack the articles. For example, Patent Document 1 (Japanese Patent Laid-Open No. 10-7108) proposes a box making apparatus in which a plurality of folded cardboard boxes are stacked along the transport direction. In the box making apparatus according to Patent Document 1, out of a plurality of stacked folded corrugated cardboard boxes, the folded corrugated cardboard boxes that are positioned at the head in the transport direction are sequentially taken out and transformed into a rectangular tube shape.

  By the way, the folding cardboard box has a plurality of side portions. Two adjacent side surfaces form an angle of 0 ° or 180 °. Two side portions forming an angle of 0 ° are in contact with each other. Here, when the folded cardboard box is deformed into a rectangular tube shape, it is necessary to change the two adjacent side surfaces to an angle close to 90 °. For this purpose, it is conceivable to pull two adjacent side portions from both sides to separate the two side portions. However, if the two side portions in contact are pulled at high speed from both sides, the two side portions are pulled to one side without separating.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a box making apparatus that enables a folded cardboard box to be reliably developed into a rectangular cardboard box.

  A box making apparatus according to the present invention is a box making apparatus that unfolds a folded cardboard box to form a rectangular cardboard box, and includes a gripping mechanism, a moving mechanism, and a control device. The folded cardboard box is a cardboard box folded in a flat shape. The gripping mechanism grips a plurality of side surfaces of the folded cardboard box. The moving mechanism moves the gripping mechanism. The control device controls the moving mechanism and bends at least one of the two adjacent side surfaces along the fold portion. Accordingly, the control device changes the angle formed by the two adjacent side surfaces from the initial angle to the final angle. The initial angle is an angle close to 180 °. The final angle is an angle close to 90 °. The fold portion is provided at the boundary between two adjacent side surface portions among the plurality of side surface portions. The control device executes initial control and main control. In the initial control, at least one of the two adjacent side surfaces is slightly bent along the crease portion, and the moving mechanism is moved so that the first two angles are formed by the two adjacent side surfaces. Control. The first angle is an angle smaller than the initial angle and larger than the final angle. After the initial control, the main control is such that at least one of the two adjacent side portions is further bent along the crease portion so that the final angle is formed by the two adjacent side portions. Is further moved and controlled.

  The box making apparatus according to the present invention changes any one of the two adjacent side portions from the initial angle to the first angle by the initial control, and then further changes to the final angle by the main control. As a result, the flat folded cardboard box can be reliably developed into a rectangular tube-shaped cardboard box.

  The folded cardboard box preferably includes a first surface portion and a second surface portion. The first surface portion is two side surface portions disposed on the first surface side. The second surface portion is two side surface portions arranged on the second surface side. The second surface is a surface opposite to the first surface side. The gripping mechanism preferably includes a first gripping part and a second gripping part. The first grip portion grips two side portions included in the first surface portion. The second gripping part grips two side parts included in the second surface part. The first gripping portion grips the first surface portions on both sides in the vertical direction at the first predetermined position in the height direction of the folded cardboard box. The second gripping part grips the second surface part below the second predetermined position. Thereby, a folding cardboard box can be easily developed into a rectangular tube-shaped cardboard box.

  Moreover, it is preferable that a control apparatus controls a moving mechanism so that the 1st surface part hold | gripped by the 1st holding part may be bend | folded along a crease | fold part in initial control. In the main control, the control device preferably controls the moving mechanism so that the second surface portion gripped by the second gripping portion is bent along the fold portion. In the initial control, a gap is surely formed between the first surface portion and the second surface portion, and then the second surface portion is largely bent in the main control. Thereby, even if it is a case where a folding cardboard box is developed at high speed, a cylindrical cardboard box can be formed reliably.

  Moreover, it is preferable that a moving mechanism has a 1st support part and a 2nd support part. The first support part supports the first grip part so as to be movable in the front-rear direction. The second support part supports the second grip part so as to be swingable between the first height position and the second height position. The second height position is a position higher than the first height position. In the initial control, the second support portion supports the second gripping portion at the second height position, and the first support portion is in the rear position with the first surface portion gripped by the first gripping portion. It is preferable to move. Further, in the main control, the second support unit moves from the second height position to the first height position in a state where the second surface unit is gripped by the second gripping unit. It is preferable to end the gripping of the first surface part after the second gripping part starts to move. The box making apparatus moves the first surface portion side small, and then moves the second surface portion side largely. Thereby, the 1st angle formed by two adjacent side parts can be changed largely reliably.

  Furthermore, the moving mechanism preferably has a swing shaft. The swing shaft is disposed on one end side of the second support portion. The second support part moves the second grip part from the second height position to the first height position so as to draw an arc around the swing axis. Thereby, a folding cardboard box can be smoothly developed into a rectangular tube shape.

  Further, the folded cardboard box has four fold portions, and in the main control, it is preferable that all four fold portions move while drawing an arc. Thereby, the whole folding cardboard box can be moved from the upper side to the lower side.

  The box making apparatus according to the present invention enables a flat cardboard box to be reliably developed into a rectangular cardboard box.

It is a schematic front view of the box making boxing system concerning one embodiment of the present invention. It is a schematic perspective view of a box making apparatus. It is a schematic plan view of a stack part. It is a top view of the 2nd lamination part. It is II sectional drawing of FIG. 4A. FIG. 3 is an enlarged view of a region R shown in FIG. 2. It is the schematic of the box making apparatus seen from the conveyance direction upstream. It is the schematic of an expansion | deployment part. It is a figure which shows a motion of a front surface holding mechanism, and a mode that a folding cardboard box is expand | deployed. It is a control block diagram of a box-boxing system. It is a figure for demonstrating the operation | movement which concerns on an expansion | deployment process. It is a figure for demonstrating the operation | movement which concerns on an expansion | deployment process. It is a figure for demonstrating the operation | movement which concerns on an expansion | deployment process. It is a figure for demonstrating the operation | movement which concerns on an expansion | deployment process. It is a figure for demonstrating the operation | movement which concerns on an expansion | deployment process. It is a perspective view of a cardboard box. It is a bottom view of a cardboard box. It is a front view of a folding cardboard box. It is a side view of a folding cardboard box.

  A box making apparatus 10 according to an embodiment of the present invention will be described with reference to the drawings. The following embodiments do not limit the technical scope of the present invention.

  In the following description, the vertical direction, the horizontal direction, and the front-back direction mean the directions shown in FIGS. 1 and 2, respectively, unless otherwise specified. Further, the transport direction means a direction in which the folded cardboard box FB or the cardboard box B is transferred in the box-making box filling system 100, and upstream / downstream means upstream / downstream in the transport direction.

(1) Overall Configuration FIG. 1 is a schematic side view of a box making box filling system 100 including a box making apparatus 10 according to an embodiment of the present invention. FIG. 2 is a schematic perspective view of the box making apparatus 10.

  The box-making box filling system 100 is a system for forming a cardboard box B for packing articles and packing the articles in the formed cardboard box B. Specifically, the box-boxing system 100 expands a flat folded cardboard box FB as shown in FIGS. 12A and 12B to form a rectangular tubular cardboard box TB. Thereafter, the box-making box filling system 100 forms a bottom cover BC on the rectangular cardboard box TB to form a cardboard box B as shown in FIG. 11A. Thereafter, the box-making box filling system 100 packs the articles in the cardboard box B. Here, the flat folded cardboard box FB is a rectangular cardboard box TB with the top and bottom lids of the cardboard box B opened to be flat. Details will be described later.

  As shown in FIG. 1 or FIG. 9, the box making and boxing system 100 mainly includes a box making device 10, a boxing device 90, a transport device 91, and a control device 92. The box making apparatus 10 is an apparatus that unfolds a folded cardboard box FB and forms a cardboard box B for packing articles. A process executed by the box making apparatus 10 is referred to as a box making process. The boxing device 90 is a device for packing a plurality of articles in the cardboard box B. The process executed by the boxing device 90 is called a boxing process. The transport device 91 is a device for transporting the cardboard box B packed with articles downstream. The control device 92 is a device that controls the box making device 10, the boxing device 90, and the transport device 91.

  The box-making boxing system 100 executes box-making processing and boxing processing while moving the folded cardboard box FB and the cardboard box B. 1 indicate the moving direction of the folded cardboard box FB or the cardboard box B in the box-making box filling system 100. As indicated by arrows D1 to D6 in FIG. 1, the folded cardboard box FB passes through the stack unit 12, the developing unit 14, and the bottom lid forming unit 15 included in the box making apparatus 10, and then to the boxing device 90. It is conveyed.

  Specifically, the box making and packing system 100 extracts the folded cardboard boxes FB one by one from the folded cardboard boxes FB stacked on the stack section 12 and folds the cardboard boxes to the developing section 14 located obliquely above the stack section 12. The box FB is moved (see arrow D1). The folded cardboard box FB is unfolded by the unfolding portion 14 and transformed into a rectangular tubular cardboard box TB. At this time, the folded cardboard box FB moves to the bottom lid forming portion 15 located obliquely below the deployment start position while being deployed (see arrow D2). Thereafter, the bottom lid BC is formed by the bottom lid forming portion 15 in the rectangular cardboard box TB. Thereafter, the rectangular tubular cardboard box TB (cardboard box B) on which the bottom cover is formed is moved in a substantially horizontal direction toward the descent start position (see arrow D3). Here, the descent start position is a place where the rectangular tubular cardboard box TB (cardboard box B) on which the bottom cover BC is formed is conveyed downward. Thereafter, the cardboard box B drops and moves to the boxing device 90 located below the lowering start position (see arrow D4). The box making box filling system 100 packs the articles into the cardboard box B by the box filling device 90, and then moves the cardboard box B to the conveying device 91 at the lowest position of the box making box filling system 100 (see arrow D5). Thereafter, the box making box filling system 100 further moves the corrugated cardboard box B to the subsequent process by the transfer device 91 (see arrow D6).

  Hereinafter, the configurations of the cardboard box B and the folded cardboard box FB used in the box making box filling system 100 and the devices 10, 90, 91, and 92 included in the box making box filling system 100 will be described.

(2) Cardboard box and folding cardboard box First, the shapes of the cardboard box B and the folding cardboard box FB used in this embodiment will be described with reference to FIGS. 11A, 11B, 12A, and 12B. 11A and 11B show a cardboard box B in which articles are packed. 12A and 12B show a folded cardboard box FB, which is a cardboard box B folded in a plane.

(2-1) Corrugated cardboard box The corrugated cardboard box B is comprised by square tube part TP and flap C21-C24, C31-C34, as shown to FIG. 11A or FIG. 11B. The rectangular tube portion TP is a portion (side portion) constituting the side surface of the cardboard box B. As shown in FIG. 11A, the rectangular tube portion TP includes a front surface C11, a left side surface C12, a back surface C13, and a right side surface C14. That is, the rectangular tube portion TP is composed of four side portions.

  The rectangular tube portion TP has four fold portions FP1 to FP4 (see FIGS. 11A, 12A, and 12B). The fold portions FP1 to FP4 are provided at the boundary between two adjacent surfaces among the front surface C11, the left side surface C12, the back surface C13, and the right side surface C14. Specifically, as shown in FIGS. 11A and 12B, the fold portion FP1 is provided at the boundary between the front surface C11 and the left side surface C12. The fold portion FP2 is provided at the boundary between the left side surface C12 and the back surface C13. The fold portion FP3 is provided at the boundary between the back surface C13 and the right side surface C14. The fold portion FP4 is provided at the boundary between the right side surface C14 and the front surface C11. The angle cylinder portion TP has an angle of 90 ° formed by two adjacent surfaces sandwiching the fold portions FP1 to FP4.

  The flaps C21 to C24 and C31 to C34 are parts constituting the upper lid and the lower lid BC of the cardboard box B, respectively. The flaps C21 to C24, C31 to C34 are respectively positioned above and below the height h direction of the rectangular tube portion TP (see FIGS. 11A and 12A). Specifically, in the height h direction of the front surface C11, the flap C21 is adjacent to the upper side, and the flap C31 is adjacent to the lower side. In the height h direction of the left side surface C12, the flap C22 is adjacent to the upper side, and the flap C32 is adjacent to the lower side. Similarly, in the height h direction of the back surface C13, the flap C23 is adjacent to the upper side, and the flap C33 is adjacent to the lower side. In the height h direction of the right side surface C14, a flap C24 is adjacent to the upper side, and a flap C34 is adjacent to the lower end.

  The flaps C31 to C34 provided on the lower side of the rectangular tube portion TP are folded so as to overlap with the adjacent flaps as shown in FIG. 11B and become the bottom cover BC of the cardboard box B. The flaps C <b> 21 to C <b> 24 provided on the upper side of the rectangular tube portion TP are folded and overlapped with the adjacent flaps in the subsequent process of the box making box filling system 100 according to the present embodiment, like the flaps C <b> 31 to C <b> 34. It becomes the upper lid of box B.

  In the present embodiment, the cardboard box B refers to a state before the upper lid is formed. That is, the cardboard box B is in a state having a rectangular tube portion TP, a bottom cover BC, and flaps C21 to C24.

(2-2) Folding Cardboard Box The folding cardboard box FB is a rectangular cardboard box TB folded into a flat shape (see FIGS. 12A and 12B). The rectangular tubular cardboard box TB refers to a state in which the upper cover and the bottom cover BC of the cardboard box B are opened to have two openings.

  As shown in FIGS. 12A and 12B, the folded cardboard box FB indicates a state in which the rectangular tube portion TP is largely bent along two opposing fold portions FP2 and FP4. At this time, the angle formed by two adjacent surfaces sandwiching the fold portions FP2 and FP4 is bent so as to be smaller than 90 ° (see FIG. 12B). Specifically, the angle formed by the two surfaces is 0 ° to 30 °. More specifically, the left side surface C12 and the back surface C13 are bent along the fold portion FP2 so that the inner wall of the left side surface C12 and the inner wall of the back surface C13 are close to each other, and from the inner wall of the left side surface C12 to the inner wall of the back surface C13. The angle up to is 0 ° to 30 °. The right side surface C14 and the front surface C11 are also bent along the fold portion FP4 so that the inner wall of the right side surface C14 and the inner wall of the front surface C11 are close to each other, and the angle from the inner wall of the right side surface C14 to the inner wall of the front surface C11 is It is 0 degree-30 degrees.

  On the other hand, the angle formed by the two surfaces adjacent to each other with the remaining fold portions FP1 and FP3 interposed therebetween is at a position that is larger than 90 ° (see FIG. 12B). Specifically, the angle formed by the two surfaces is 150 ° to 180 °. More specifically, the front surface C11 and the left side surface C12 are spread around the fold part FP1 so that the inner wall of the front surface C11 and the inner wall of the left side surface C12 are separated from each other, and from the inner wall of the front surface C11 to the left side surface C12. The angle to the inner wall is 150 ° to 180 °. The back surface C13 and the right side surface C14 are also spread around the fold part FP3 so that the inner wall of the back surface C13 and the inner wall of the right side surface C14 are separated from each other, and the angle from the inner wall of the back surface C13 to the inner wall of the right side surface C14 Is 100 ° to 180 °.

  In the present embodiment, the three surfaces C11 to C14, C21 to C24, and C31 to C34 extending continuously in the height direction h of the rectangular tube portion TP are referred to as continuous surfaces S1 to S4 (see FIGS. 12A and 12B). . Specifically, the front surface C11, the flap C21, and the flap C31 illustrated in FIG. 12A are referred to as a first continuous surface S1. Further, the left side surface C12, the flap C22, and the flap C32 are referred to as a second continuous surface S2. Similarly, the back surface C13, the flap C23, and the flap C33 are referred to as a third continuous surface S3. Further, the right side surface C14, the flap C24, and the flap C34 are referred to as a fourth continuous surface S4. As shown in FIG. 12B, the folded cardboard box FB includes a first continuous surface S1 and a second continuous surface S2 on one surface (second surface) FF, and is a surface (first surface) opposite to the second surface FF. The surface) RF includes the third continuous surface S3 and the fourth continuous surface S4.

  In the box making box filling system 100 according to the present embodiment, the folded cardboard boxes FB are stacked in such a posture that the fold portions FP2 and FP4 are the vertical ends of the folded cardboard boxes FB. Further, the first corrugated cardboard box FB is stacked with the first surface portion RF facing the upstream side in the transport direction and the second surface FF facing the downstream side in the transport direction. In other words, the first surface RF is a surface (rear surface) located on the rear side, and the second surface FF is a surface (front surface) located on the front side.

(3) Box making apparatus The box making apparatus 10 is an apparatus that forms the cardboard box B by developing the flat folded cardboard box FB as described above. As shown in FIG. 1, the box making apparatus 10 is disposed on the most upstream side in the transport direction. As shown in FIG. 1, the box making apparatus 10 mainly includes a stack part 12, a transfer part 13, a developing part 14, and a bottom lid forming part 15. Hereinafter, the configuration of each unit will be described in detail.

(3-1) Stack unit The stack unit 12 is a unit for stacking a large number of planar folded cardboard boxes FB. The stack unit 12 is also a unit that moves a large number of stacked folded cardboard boxes FB downstream in the transport direction. A large number of the folded cardboard boxes FB are stacked along the conveying direction of the folded cardboard boxes FB as shown in FIG. As described above, the folded cardboard boxes FB are stacked in such a posture that the fold portions FP2 and FP4 are the vertical ends of the folded cardboard boxes FB. That is, as shown in FIG. 12B, each folded cardboard box FB is placed on the stack portion 12 in such a posture that the upper end of the folded cardboard box FB becomes the fold part FP2 and the lower end of the folded cardboard box FB becomes the fold part FP4. The

  The stack unit 12 is located on the most upstream side in the box making apparatus 10. The stack unit 12 is provided at the lowest position in the box making apparatus 10. That is, a large number of folded cardboard boxes FB are stacked at the lowest position in the box making apparatus 10. A number of the folded cardboard boxes FB stacked on the stack unit 12 are moved one by one to the developing unit 14 provided at the upper position one by one by the transfer unit 13 described later.

  As shown in FIG. 2, the stack portion 12 mainly includes a first stacked portion 21, a second stacked portion (stepped portion) 22, a front plate 23, a rear plate 24, and an insertion mechanism 25.

(3-1-1) 1st lamination | stacking part The 1st lamination | stacking part 21 is a unit which laminates | stacks many folding cardboard boxes FB along a conveyance direction. Moreover, the 1st lamination | stacking part 21 is a conveyor which conveys many folding cardboard boxes FB to a conveyance direction downstream. The first stacking unit 21 sends the folded cardboard box FB forward while positioning the left and right directions of the folded cardboard box FB with a width direction defining member (not shown). Specifically, the width direction defining member defines the width direction of the folded cardboard box FB on the basis of the boundary portion between the rectangular tube portion TP of the placed folded cardboard box FB and the flaps C31 to C34. As shown in FIG. 3, the first laminated portion 21 mainly includes a floor portion 211, a roller 212, and a belt 213.

  The floor portion 211 is a portion on which the folded cardboard box FB is placed. The floor portion 211 is composed of a plurality of plate-like members. The plurality of plate-like members are arranged in parallel with a gap having a predetermined width. Each of the plurality of plate-like members extends in the front-rear direction. The folded cardboard boxes FB are stacked along the direction in which the plate member extends.

  The roller 212 is a member for rotating a belt 213 described later along the longitudinal direction of the floor portion 211. The roller 212 has a rotation shaft extending in the width direction (left-right direction) of the floor portion 211. The rollers 212 are respectively arranged on the upstream side and the downstream side of the floor portion 211 in the transport direction. The roller 212 is appropriately rotated by a roller rotation mechanism 214 (see FIG. 9).

  The belt 213 is an endless belt that is passed to the roller 212. Specifically, the belt 213 is passed over rollers 212 disposed on the upstream side and the downstream side of the floor portion 211, respectively. The belt 213 is disposed at a position covering a gap having a predetermined width formed on the floor portion 211. In the present embodiment, as shown in FIG. 3, the belt 213 is disposed at three locations in the width direction of the floor portion 211. That is, the three belts 213 are passed along the longitudinal direction of the floor portion 211 and cover the gap formed in the floor portion 211. The three belts 213 cover a portion of the floor portion 211 extending adjacent to the gap along the longitudinal direction.

  The belt 213 contacts the lower end of the folded cardboard box FB placed on the floor portion 211. Further, the belt 213 rotates as the roller 212 rotates. As a result, the belt 213 moves the contacted folded cardboard box FB forward (downstream in the transport direction).

  The first stacked unit 21 is provided with a sensor (not shown). The sensor determines the presence or absence of the folded cardboard box FB at a predetermined location of the first stacked unit 21. Here, the predetermined location is, for example, a downstream end portion of the floor portion 211. When the sensor determines that there is no folded cardboard box FB at a predetermined location, the roller 212 described above is driven to rotate.

(3-1-2) 2nd lamination | stacking part The 2nd lamination | stacking part 22 is a place which laminates | stacks the some folding cardboard box FB before being transferred to a post process. As shown in FIGS. 2 and 3, the second stacking unit 22 is disposed downstream of the first stacking unit 21, and the second stacking unit 22 is a folded cardboard box conveyed from the first stacking unit 21. FB is laminated. In other words, the second stacked unit 22 mounts a plurality of folded cardboard boxes FB positioned on the top side among the many folded cardboard boxes FB placed on the stack unit 12. That is, the second stacked unit 22 comes into contact with the lower ends of a plurality of folded cardboard boxes FB located on the top side among the many folded cardboard boxes FB placed on the stack unit 12.

  4A and 4B show the second stacked portion 22. 4A is a plan view of the second stacked portion, and FIG. 4B is a cross-sectional view taken along the line II of FIG. 4A. The 2nd lamination | stacking part 22 is comprised by the some contact surface 22a. Each contact surface 22a extends in the width direction (left-right direction) of the stack portion 12, and has a predetermined length L in the transport direction (see FIG. 4B). Here, the predetermined length L is preferably larger than the thickness dimension t of one folded cardboard box FB and smaller than the total thickness dimension t of three folded cardboard boxes FB. As shown in FIG. 4B, the plurality of contact surfaces 22 a are arranged in a stepped manner in the second stacked portion 22. That is, the plurality of contact surfaces 22a are arranged at different height positions with respect to the horizontal plane. It is preferable that the 2nd lamination | stacking part 22 comprises four or more steps | steps by the some contact surface 22a. In the present embodiment, the second stacked portion 22 has eight contact surfaces 22a, and the eight contact surfaces 22a constitute eight steps.

  In the second stacked portion 22, the contact surfaces 22a arranged in a step shape have a first inclination (gradient) θ1 with respect to the horizontal plane. Here, the first inclination θ1 is 45 ° to 60 °. The plurality of contact surfaces 22a are slightly inclined with respect to the horizontal plane so that the folded cardboard box FB is inclined forward with respect to the transport direction. In other words, each contact surface 22a is provided in a posture slightly inclined with respect to the horizontal plane. For example, the plurality of contact surfaces 22a are provided to be inclined by 1 ° to 85 ° with respect to the horizontal plane. In the present embodiment, specifically, each of the plurality of contact surfaces 22a is disposed so as to have the second inclination θ2 with respect to the above-described gradient. Here, the second inclination θ2 is determined to be 15 ° to 25 ° by repeating the test in the trial production stage.

  As shown in FIG. 4A, three cutout portions 22b are formed in the left-right direction on the contact surface 22a constituting the lowest step of the stairs among the plurality of contact surfaces 22a. The notch portion 22b is a portion in which a claw portion 321a of a lift 321 described later can move up and down.

  The second stacked unit 22 also has a function of forming a gap between a plurality of adjacent folded cardboard boxes FB among the stacked folded cardboard boxes FB. The staircase of the second stacked portion 22 gives an impact or vibration from the lower end side to the plurality of folded cardboard boxes FB falling down the staircase. Further, the stairs moves a plurality of adjacent folded cardboard boxes FB to different height positions. Thereby, a gap is formed between a plurality of adjacent folded cardboard boxes FB.

(3-1-3) Front Plate The front plate 23 is a member that regulates the forward movement of the folded cardboard boxes FB stacked on the second stacked portion 22. The front plate 23 is provided on the front end side of the lowermost contact surface 22a of the second stacked portion 22 (see FIGS. 2 and 5). Specifically, the front plate 23 is disposed on the front end side of the lowermost contact surface 22 a and on both sides in the width direction with a predetermined gap in the center in the width direction of the second stacked portion 22.

  The front plate 23 is a plate-like member that extends in the vertical direction. The front plate 23 extends and contacts in the vertical direction at two locations in the width direction of the front surface FF of the front folded cardboard box FB among the plurality of folded cardboard boxes FB stacked on the second stacked portion 22. Here, the leading folded cardboard box FB is a folded cardboard box FB positioned in the foremost (frontmost row) among the plurality of folded cardboard boxes FB stacked in the second stacking unit.

  The front plate 23 extends in the vertical direction in a forward tilt posture. Here, the forward leaning posture is a posture having the same inclination as the forward leaning posture of the folded cardboard boxes FB stacked in the second stacking unit 22. That is, the front plate 23 supports the folded corrugated cardboard box FB from the front while maintaining the inclination of the folded corrugated cardboard box FB placed on the second stacked portion 22.

(3-1-4) Rear Plate The rear plate 24 is a member that presses a large number of folded cardboard boxes FB stacked on the first stacked portion 21 from the rear. Specifically, the rear plate 24 is configured to apply a constant force in the transport direction to the rear surface RF of the folded cardboard box FB located at the rearmost among the many folded cardboard boxes FB stacked. The rear plate 24 moves forward while pressing the rear surface RF of the folded cardboard box FB located at the rear end as the folded cardboard box FB located at the tail end moves forward (downstream in the transport direction).

(3-1-5) Insertion Mechanism The insertion mechanism 25 is a mechanism disposed above the second stacked unit 22 as shown in FIG. The insertion mechanism 25 includes a front folding cardboard box FB among a plurality of folding cardboard boxes FB stacked on the second stacking unit 22, and a plurality of folding cardboard boxes FB (following to the first folding cardboard box FB). This is a mechanism for separating the folded cardboard box). More specifically, the insertion mechanism 25 includes a folding cardboard box (adjacent folding cardboard box) that is adjacent to and contacts the leading folding cardboard box FB among the leading folding cardboard box FB and the subsequent folding cardboard box FB. This is a mechanism for forming a gap with the FB.

  As shown in FIG. 6, the insertion mechanism 25 mainly includes an upper plate 251 and a vertical movement plate 252.

(A) Upper Plate The upper plate 251 is a plate that contacts the upper ends of the plurality of folded cardboard boxes FB stacked in the transport direction in the second stacking unit 22. The upper plate 251 has an inclined surface that is inclined in accordance with the inclination of the second stacked portion 22. In other words, in the upper plate 251, one end on the downstream side in the transport direction is inclined downward with respect to the horizontal plane as compared with one end on the upstream side in the transport direction.

  The inclined surface of the upper plate 251 regulates the position of the upper end of the folded cardboard box FB. Specifically, the inclined surface of the upper plate 251 is in contact with the upper end of the folded cardboard box FB that protrudes larger than the upper ends of the other folded cardboard boxes FB among the plurality of stacked folded cardboard boxes FB. The cardboard box FB is pushed downward. That is, the upper plate 251 corrects the height position of the lower end of the folded cardboard box FB.

(B) Vertical movement plate The vertical movement plate 252 is a unit for forming a gap between the front folding cardboard box FB and the adjacent folding cardboard box FB. The vertical movement plate 252 constitutes a part of the upper plate 251. Specifically, the vertical movement plate 252 is provided in the center of the upper plate 251 in the width direction. The vertically moving plate 252 comes to a position above the rectangular tube portion TP of the folded cardboard box FB placed on the second stacked portion 22. Further, the vertical movement plate 252 has an inclined surface having the same inclination with respect to the inclined surface of the upper plate 251. In other words, the vertical movement plate 252 has one end on the downstream side in the transport direction inclined downward with respect to the horizontal plane as compared with one end on the upstream side in the transport direction.

  The vertical movement plate 252 has a movable shaft (not shown) at one end on the upstream side. The movable shaft extends along the width direction of the upper plate 251. The vertical movement plate 252 moves downward with respect to the movable axis by the movable mechanism 253 shown in FIG. Specifically, the vertical movement plate 252 moves between the insertion standby position and the insertion position by moving downward with respect to the movable shaft. Here, the insertion standby position refers to a state where the inclined surface of the upper plate 251 and the inclined surface of the vertical movement plate 252 are at the same height position. The insertion position refers to a state in which the vertically moving plate 252 moves downward with respect to the movable shaft and the inclined surface of the vertically moving plate 252 is at a lower position than the inclined surface of the upper plate 251.

  The vertical movement plate 252 has an insertion part 252a at one end on the downstream side. The insertion part 252a is a part temporarily inserted between the front folding cardboard box FB and the adjacent folding cardboard box FB when the up-and-down moving plate 252 moves to the insertion position. The vertical movement plate 252 forcibly presses the upper end of the succeeding cardboard box FB from above at the insertion position by the inclined surface among the plurality of folded cardboard boxes FB.

(3-2) Transfer Unit The transfer unit 13 is a unit that sequentially removes the leading folded cardboard box FB from the plurality of folded cardboard boxes FB stacked on the second stacked unit 22 and transfers them to the subsequent process. The transfer part 13 is arrange | positioned downstream of the stack part 12, as shown in FIG. 1 and FIG. Specifically, the transfer unit 13 is disposed on the front FF side of the front folded cardboard box FB of the second stacked unit 22. As shown in FIG. 6, the transfer unit 13 mainly includes a separation mechanism 31 and an upper transfer mechanism 32.

(3-2-1) Separation Mechanism The separation mechanism 31 is a mechanism that pulls the leading folding cardboard box FB from the subsequent folding cardboard boxes FB among the plurality of folding cardboard boxes FB stacked on the second stacking unit 22. is there. Specifically, the separation mechanism 31 pulls the upper end portion of the leading folding cardboard box FB away from the upper end portion of the adjacent folding cardboard box FB. As shown in FIG. 6, the separation mechanism 31 is mainly composed of a longitudinal suction cup 311 and a longitudinal movement mechanism 312.

(A) Longitudinal dynamic suction cup The longitudinal dynamic suction cup 311 adsorbs the upper end of the folded cardboard box FB from the front FF side. Specifically, the longitudinal suction cup 311 sucks a part of the left side surface C12. That is, the longitudinal suction cup 311 is disposed on the front surface FF side of the folded cardboard box FB and at a height position near the upper end of the folded cardboard box FB. The longitudinal suction cup 311 is disposed between the two front plates 23 described above (see FIGS. 2 and 6). The front-rear moving suction cup 311 adsorbs the front surface FF of the leading folded cardboard box FS from between the two front plates 23 and bends the upper end portion of the leading folded cardboard box FS. Thereby, the front-back suction cup 311 forms a gap between the upper end portion of the leading folding cardboard box FS and the upper end portion of the adjacent folding cardboard box FS.

(B) Front-rear direction moving mechanism The front-rear direction moving mechanism 312 supports the front-rear moving suction cup 311 so as to be movable in the front-rear direction. Specifically, the front-rear direction moving mechanism 312 moves the front-rear moving suction cup 311 between the suction standby position, the suction start position, and the separation completion position.

  Here, the suction standby position is a position where the front and rear moving suction cups 311 wait before starting the suction operation. At the suction standby position, the longitudinal suction cup 311 is located farthest from the front surface FF of the folded cardboard box FB.

  The suction start position is a position at which the front-rear suction cup 311 starts the suction operation. At the suction start position, the front and rear suction cups 311 come into contact with the front surface FF of the front folded cardboard box FB placed on the second stacked part 22 and sucked to the upper end part of the folded cardboard box FB. That is, the longitudinal movement mechanism 312 advances the longitudinal suction cup 311 to move from the adsorption standby position to the adsorption start position.

  The separation completion position is a position where the separation operation is completed. Here, the separating operation is an operation for separating the upper end portion of the leading folded cardboard box FB placed on the second stacked portion 22 from the upper end portion of the adjacent folded cardboard box FB. The separation completion position is a position retracted from the suction start position. That is, the longitudinal movement mechanism 312 moves the longitudinal suction cup 311 away from the suction start position and moves it to the completion position by moving the longitudinal suction cup 311 backward. The front-rear moving suction cup 311 is moved toward the separation completion position by the front-rear direction moving mechanism 312 in a state where the upper end portion of the folded cardboard box FB is adsorbed. As a result, the longitudinal suction cup 311 draws the adsorbed portion of the upper end portion of the folded cardboard box FB forward from the non-adsorbed portion (the portion in contact with the front plate 23). In other words, the longitudinally moving suction cup 311 pulls the center portion in the width direction forward of the upper end portion of the leading folded cardboard box FB than both side portions in the width direction. At the separation completion position, the longitudinally moving suction cup 311 ends the suction of the folded cardboard box FB and releases the folded cardboard box FB. Thereafter, the longitudinally moving suction cup 311 further moves backward and returns to the suction standby position.

  The front-rear direction moving mechanism 312 may move the front-rear moving suction cup 311 along the conveyance direction of the folded cardboard box FB at the separation completion position. Specifically, the longitudinal movement mechanism 312 moves the longitudinal suction cup 311 upward by a predetermined distance in accordance with the speed at which the folding cardboard box FB is moved upward while the folding cardboard box FB is attracted by the longitudinal suction cup 311. Move to. That is, the longitudinal movement mechanism 312 can also slightly move the longitudinal suction cup 311 up and down.

(3-2-2) Upper Transfer Mechanism The upper transfer mechanism 32 is a mechanism that moves the leading folded cardboard box FB among the plurality of folded cardboard boxes FB stacked on the second stacking unit 22 upward. Specifically, the upper transfer mechanism 32 is a mechanism that delivers the leading folded cardboard box FB to the developing unit 14. As shown in FIG. 5 or FIG. 6, the upper transfer mechanism 32 mainly includes a lift 321, a vertical motion suction cup 322, and a vertical movement mechanism 323.

(A) Lift The lift 321 is a member that comes into contact with the lower end of the leading folded cardboard box FB and lifts the leading folded cardboard box FB upward. The lift 321 is disposed at a position corresponding to the notch portion 22b formed on the lowermost contact surface 22a of the second stacked portion 22 described above. That is, the three lifts 321 are arranged along the direction in which the lowermost contact surface 22a extends (the width direction of the second stacked portion 22).

  The lift 321 is a plate-like member extending in the vertical direction. Of the three lifts 321, the two lifts (lifts on both sides) 321 arranged on both sides are approximately half or 2/3 of the vertical length of the front plate 23 described above. That is, the lifts 321 on both sides come into contact with the front surface FF of the front folded cardboard box FB along the vertical direction. The lifts 321 on both sides have a length that extends from the lower end of the front folding cardboard box FB to the vicinity of the center in the height direction of the folding cardboard box FB. Of the three lifts 321, the vertical length of the lift 321 (middle lift) arranged in the middle in the width direction is shorter than the lifts 321 on both sides. For example, the length of the middle lift 321 is about 1/3 of the lifts 321 on both sides.

  The lift 321 extends in the vertical direction in a forward tilt posture. Here, the forward leaning posture is a posture having the same inclination as the forward leaning posture of the folded cardboard boxes FB stacked in the second stacking unit 22. That is, the lift 321 supports the folded cardboard box FB along the vertical direction while maintaining the inclination of the folded cardboard box FB placed on the second stacked unit 22.

  A claw portion 321a is formed at the tip of the lower end of the lift 321 (see FIGS. 5 and 6). The nail | claw part 321a has a length dimension comparable as the thickness dimension for one folding cardboard box FB. That is, the lift 321 comes into contact with the lower end of the leading folded cardboard box FB exposed at the position of the notch portion 22b from below with the claw portion 321a. In other words, the lower end of the leading folded cardboard box FB is placed on the upper surface of the claw portion 321a.

(B) Vertical motion suction cup The vertical motion suction cup 322 sucks the vicinity of the lower end portion of the folded cardboard box FB from the front FF side. Specifically, the vertical suction cup 322 sucks a part of the front surface C11. In other words, the longitudinal suction cup 311 is disposed on the front surface FF side of the folded cardboard box FB and at a height position near the lower end of the folded cardboard box FB. That is, the vertical suction cup 322 sucks the vicinity of the lower end of the folded cardboard box FB. The vertical suction cup 322 is provided at the upper end of the middle lift 321 along the direction in which the lift 321 extends. Specifically, two vertical suction cups 322 are provided at the upper end of the middle lift 321.

(C) Vertical movement mechanism The vertical movement mechanism 323 is a mechanism that moves the lift 321 and the vertical suction cup 322 in the vertical direction. Specifically, the vertical movement mechanism 323 moves the lift 321 up and down between the transfer standby position and the transfer end position. As the lift 321 moves from the transfer standby position to the transfer end position, the vertical suction cup 322 also moves up and down. Here, the transfer standby position is a position where the lift 321 before starting the transfer of the leading folded cardboard box FB is made to wait. Specifically, at the transfer standby position, the lower end of the lift 321 is at the lowest position in the movable region. At this time, the above-described claw portion 321a comes into contact with the lower end of the leading folded cardboard box FB placed on the second stacked portion 22 from the cutout portion 22b. The transfer end position is a position where the lift 321 completes the transfer of the leading folded cardboard box FB. In other words, the lift 321 is a position where the leading folded cardboard box FB is delivered to the developing unit 14 described later. Specifically, at the transfer end position, the lower end of the lift 321 is at the highest position (upper limit position) in the movable region.

  The vertical movement mechanism 323 changes the upper limit position of the movable region in accordance with the size of the folded cardboard box FB to be transferred. Specifically, the vertical movement mechanism 323 moves the lift 321 and the vertical suction cup 322 upward so that the fold portion FP3 on the rear surface RF of the folding cardboard box FB to be transferred is at a predetermined height position at the developing unit 14. Move to. Here, the predetermined height position is a height position at which the rear upper suction cup 41a and the rear lower suction cup 41b at the unfolding start position, which will be described later, can contact the upper and lower sides of the fold portion FP3, respectively. For example, the vertical movement mechanism 323 changes the upper limit position of the movable region according to the size of the cardboard box B (folded cardboard box FB) input to the control device 92 in advance.

(3-3) Expansion | deployment part The expansion | deployment part 14 is a unit which expand | deploys folding cardboard box FB and forms the cylindrical cardboard box TB. In other words, the expansion | deployment part 14 is a unit which deform | transforms the folding cardboard box FB delivered from the transfer part 13 from planar shape to a cylinder shape (refer FIG. 8). As shown in FIGS. 1 and 2, the developing unit 14 is provided above the transfer unit 13. That is, as shown by an arrow D11 in FIG. 8, the unfolding unit 14 receives the folded cardboard box FB transferred from below and performs the unfolding process of the folded cardboard FB.

  As shown in FIG. 7, the deployment unit 14 is mainly configured by a plurality of gripping mechanisms 41 a, 41 b, 42 a, 42 b, a plurality of moving mechanisms 43, 44, 45, and a plurality of auxiliary units 47, 48. Yes. The plurality of gripping mechanisms 41a, 41b, 42a, and 42b include rear surface gripping mechanisms (first gripping portions) 41a and 41b that grip the side surface portions C13 and C14 on the rear surface RF side, and side surface portions C11 and C12 on the front surface FF side. And front gripping mechanisms (second gripping portions) 42a and 42b for gripping. The plurality of moving mechanisms 43, 44, 45 include a first moving mechanism 43, a second moving mechanism 44, and a third moving mechanism 45.

  The rear surface gripping mechanisms 41 a and 41 b are movably supported by the first moving mechanism 43 and the second moving mechanism 44. Further, the front surface gripping mechanisms 42 a and 42 b are movably supported by a third moving mechanism 45. The rear gripping mechanisms 41a and 41b and the front gripping mechanisms 42a and 42b are moved by the first moving mechanism 43, the second moving mechanism 44, and the third moving mechanism 45, respectively. The box FB is transformed into a cylindrical cardboard box TB.

(3-3-1) Rear gripping mechanism, first moving mechanism, and second moving mechanism (a) Rear gripping mechanism The rear gripping mechanisms 41a and 41b are adsorbers, and each of the rear upper suction cup 41a and the rear lower suction cup 41b. Including. The rear upper suction cup 41a and the rear lower suction cup 41b are disposed on the rear surface RF side of the folded cardboard box FB, and grip the side surfaces C13 and C14 included in the rear surface RF of the folded cardboard box FB. The rear upper suction cup 41a is disposed above the rear lower suction cup 41b.

  The rear surface gripping mechanisms 41a and 41b adsorb both the upper and lower sides of the first predetermined position in the rear surface RF of the folded cardboard box FB. In the present embodiment, the first predetermined position is a fold portion FP3 that is a boundary between the back surface C13 and the right side surface C14 included in the rear surface RF.

  Specifically, the rear upper suction cup 41a sucks the side surface portion C13 of the folded cardboard box FB positioned above the fold portion FP3. More specifically, the rear upper suction cup 41a sucks the vicinity of the fold portion FP3 in the rear surface C13. The rear lower suction cup 41b sucks the side surface portion C14 of the folded cardboard box FB positioned below the fold portion FP3. More specifically, the rear lower suction cup 41b sucks the vicinity of the fold portion FP3 in the right side surface C14.

  The rear upper suction cup 41a starts a suction operation at a later-described deployment start position, and then continues the suction operation until returning to a later-described deployment standby position. On the other hand, the rear lower suction cup 41b starts a suction operation at a later-described deployment start position, then returns to a later-described deployment standby position, and continues the suction operation until a later-described main control is executed.

(B) First moving mechanism The first moving mechanism 43 is a mechanism that supports the rear upper suction cup 41a so as to be movable in the front-rear direction. The first moving mechanism 43 mainly includes an upper support portion (first support portion) 43a and a first drive portion 43b (see FIG. 2, FIG. 7, or FIG. 9).

  The upper support part 43a is attached to a part of the frame 99 of the box making box filling system 100 as shown in FIGS. The part of the frame 99 is a frame part provided at the highest position among the parts that form the framework of the box-making box filling system 100. The upper support portion 43a supports the rear upper suction cup 41a so that the suction surface of the rear upper suction cup 41a is parallel to the back surface C13 of the folded cardboard box FB sent from the transfer section 13.

  The upper support portion 43a supports the rear upper suction cup 41a so as to be movable in the front-rear direction. Specifically, the upper support portion 43a is driven by the first drive portion 43b to move the rear upper suction cup 41a in the front-rear direction. Here, the front-rear direction in which the rear upper suction cup 41a moves is the same direction as the front-rear direction of the box-making box packing system 100 shown in FIGS.

  Specifically, the upper support portion 43a supports the rear upper suction cup 41a so as to be movable between the deployment standby position and the deployment start position.

  The deployment standby position is located behind the deployment start position. The deployment standby position is a position where the rear upper suction cup 41a waits before the deployment operation is started. The rear upper suction cup 41a is in the unfolded standby position and is the farthest away from the back surface C13 of the folded cardboard box FB. The unfolding start position is a position for receiving the folded cardboard box FB transferred by the transfer unit 13. At the unfolding start position, the rear upper suction cup 41a comes into contact with and sucks the rear face C13 of the folded cardboard box FB. That is, the upper support portion 43a moves the rear upper suction cup 41a from the deployment standby position to the deployment start position by moving the rear upper suction cup 41a forward. Further, the upper support part 43a moves the rear upper suction cup 41a from the deployment start position to the deployment standby position by retracting the rear upper suction cup 41a.

  In the initial control described later, the upper support portion 43a moves the rear upper suction cup 41a from the deployment start position to the deployment standby position in a state where the rear upper suction cup 41a is attracted to the rear surface C13 of the folded cardboard box FB. Thereafter, the rear upper suction cup 41a finishes the suction of the folded cardboard box FB, and releases the folded cardboard box FB.

(C) Second moving mechanism The second moving mechanism 44 is a mechanism that supports the rear lower suction cup 41b so as to be movable in the front-rear direction. The second moving mechanism 44 mainly includes a lower support portion (first support portion) 44a and a second drive portion 44b (see FIG. 7 or FIG. 9).

  The lower support part 44a supports the rear lower suction cup 41b at a position lower than the upper support part 43a. The lower support portion 44a supports the rear upper suction cup 41a so that the suction surface of the rear lower suction cup 41b is parallel to the right side face C14 of the folded cardboard box FB sent from the transfer section 13.

  The lower support portion 44a supports the rear lower suction cup 41b so as to be movable in the front-rear direction and the up-down direction. The lower support portion 44a is driven by the second drive portion 44b to move the rear lower suction cup 41b in the front-rear direction. Here, the front-rear direction in which the rear lower suction cup 41b moves is the same direction as the front-rear direction of the box-making box packing system 100 shown in FIGS.

  Specifically, the lower support portion 44a supports the rear lower suction cup 41b so as to be movable between a deployment standby position, a deployment start position, and a release position.

  The deployment standby position is located behind the deployment start position. The deployment standby position is a position where the rear lower suction cup 41b waits before starting the deployment operation. In the unfolding standby position, the rear lower suction cup 41b is at a position farthest from the right side C14 of the folded cardboard box FB. The unfolding start position is a position for receiving the folded cardboard box FB transferred by the transfer unit 13. At the unfolding start position, the rear lower suction cup 41b comes into contact with and adsorbs to the right side face C14 of the folded cardboard box FB. That is, the lower support portion 44a moves the rear lower suction cup 41b from the deployment standby position to the deployment start position by moving the rear lower suction cup 41b forward. The lower support portion 44a moves the rear lower suction cup 41b from the deployment start position to the deployment standby position by retracting the rear lower suction cup 41b.

  The lower support portion 44a moves the rear lower suction cup 41b from the deployment start position to the deployment standby position in a state where the rear lower suction cup 41b is attracted to the right side surface C14 of the folded cardboard box FB in the initial control described later. Thereafter, when the main control described later is started, the rear lower suction cup 41b ends the suction of the folded cardboard box FB and releases the folded cardboard box FB. The release position is a position where the rear lower suction cup 41b is separated from the right side surface C14 of the folded cardboard box FB. Specifically, the release position is located slightly above and / or ahead of the deployment standby position. The release position is a position where the rear lower suction cup 41b has moved following the folded cardboard box FB by a slight adsorption force remaining after the completion of the adsorption. Thereafter, the rear lower suction cup 41b is returned to the unfolding standby position by the lower support portion 44a.

(3-3-2) Front gripping mechanism and third moving mechanism (a) Front gripping mechanism The front gripping mechanisms 42a and 42b are also suction devices, and include a front upper suction cup 42a and a front lower suction cup 42b. The front upper suction cup 42a and the front lower suction cup 42b are arranged on the front FF side of the folded cardboard box FB, and grip the side portions C11 and C12 included in the front FF of the folded cardboard box FB. The front upper suction cup 42a is positioned above the front lower suction cup 42b at a deployment start position described later, and is positioned in front of the front lower suction cup 42b at a deployment standby position described later.

  The front upper suction cup 42a sucks the lower side of the second predetermined position in the front surface FF of the folded cardboard box FB at the deployment start position. In the present embodiment, the second predetermined position is a fold portion FP1 that is a boundary between the front surface C11 and the left side surface C12 included in the front surface FF. Specifically, the front upper suction cup 42a sucks the side surface portion C11 of the folded cardboard box FB located below the fold portion FP1. More specifically, the front upper suction cup 42a sucks the vicinity of the fold portion FP1 in the front C11.

  The front lower suction cup 42b also sucks the lower side of the second predetermined position in the front surface FF of the folded cardboard box FB at the unfolding start position. Specifically, the front lower suction cup 42b is lower than the fold portion FP1 and sucks the lower side of the side surface portion C11 sucked by the front upper suction cup 42a. In other words, the front lower suction cup 42b sucks the lower side of the front C11 than the portion sucked by the front upper suction cup 42a.

  The front upper suction cup 42a and the front lower suction cup 42b start a suction operation at a deployment start position described later, and then continue the suction operation until returning to a deployment standby position described later.

(B) Third moving mechanism The third moving mechanism 45 supports the front upper suction cup 42a and the front lower suction cup 42b so as to be movable in the vertical direction and the front-rear direction. Specifically, the third moving mechanism 45 swings the front upper suction cup 42a and the front lower suction cup 42b to change the positions in the vertical direction and the front-rear direction.

  The third moving mechanism 45 mainly includes a swing support part (second support part) 45a, a third drive part 45b, and a swing shaft 45c (see FIG. 7 or FIG. 9). The swing support part 45a is a member extending in the front-rear direction at the deployment standby position. The front upper suction cup 42a, the front lower suction cup 42b, and auxiliary units 47 and 48, which will be described later, are attached along the extending direction of the swing support portion 45a (see FIG. 7). At this time, the swing support part 45a includes the front upper suction cup 42a, the front lower suction cup 42b, and the auxiliary unit 47 so that the suction surfaces of the front upper suction cup 42a, the front lower suction cup 42b, and the auxiliary units 47 and 48 face upward. , 48 are supported. Further, the swinging support portion 45a is a front position of the folding cardboard box FB in which the suction surfaces of the front upper suction cup 42a, the front lower suction cup 42b, and the auxiliary units 47 and 48 are transferred to the development section 14 at a deployment start position described later. The front upper suction cup 42a, the front lower suction cup 42b, and the auxiliary units 47 and 48 are supported so as to be substantially parallel to C11 and the left side face C12.

  The swing support part 45a mainly includes a main part and a tip part in the longitudinal direction. The main part is a part located on the swing shaft 45c side, and the tip part is a part located on the swing end side. Two auxiliary units 47, which will be described later, are attached to the tip, and a front upper suction cup 42a, a front lower suction cup 42b, and an auxiliary unit 48 are attached to the main part. The auxiliary unit 48 attached to the main part is attached to a position adjacent to the front upper suction cup 42a and the front lower suction cup 42b. The tip portion is connected to the main portion by a link mechanism. The link mechanism is driven by an air cylinder. The tip part changes the inclination with respect to the main part by driving the link mechanism (see FIG. 8). Specifically, the tip part changes the inclination by 90 ° with respect to the main part.

  The swing shaft 45c is a shaft for swinging the swing support portion 45a in the vertical direction. As shown in FIG. 7, the swing shaft 45c is provided at a position lower than the rear lower suction cup 41b. The swing shaft 45c is provided in the vicinity of the rear end of the swing support portion 45a. The third drive part 45b swings the swing support part 45a up and down with respect to the swing shaft 45c. That is, the swinging support portion 45a is driven by the third drive portion 45b to move the front upper suction cup 42a, the front lower suction cup 42b, and the auxiliary units 47 and 48 in the vertical direction with reference to the vicinity of the rear end. Rocks.

  The third moving mechanism 45 swings the swing support portion 45a so as to draw an arc around the swing shaft 45c. The third moving mechanism 45 moves the front upper suction cup 42a, the front lower suction cup 42b, and the auxiliary units 47 and 48 between the deployment standby position and the deployment start position by swinging the swing support portion 45a. .

  Here, the deployment standby position is a position where the swing support portion 45a waits for the front upper suction cup 42a, the front lower suction cup 42b, and the auxiliary units 47 and 48 before starting the deployment operation. At the unfolding standby position, the front upper suction cup 42a, the front lower suction cup 42b, and the auxiliary units 47 and 48 are located farthest from the front surface C11 and the left side surface C12 of the folded cardboard box FB. Specifically, in the unfolding standby position, the swing support portion 45a extends in the front-rear direction at substantially the same height position as the swing shaft 45c. In other words, the swing support part 45a supports the front upper suction cup 42a, the front lower suction cup 42b, and the auxiliary units 47 and 48 in a posture extending substantially parallel to the horizontal plane. The front upper suction cup 42a, the front lower suction cup 42b, and the auxiliary units 47 and 48 in the development standby position are lower than the rear upper suction cup 41a and the rear lower suction cup 41b in the above-described development start position. The deployment start position is a position where the deployment operation is started. At the unfolding start position, the front upper suction cup 42a, the front lower suction cup 42b, and the auxiliary unit 48 attached to the main part come into contact with and suck the front face C11 of the folded cardboard box FB. Further, at the deployment start position, the auxiliary unit 47 attached to the distal end comes into contact with and adsorbs the left side surface C12.

  When the front upper suction cup 42a and the front lower suction cup 42b contact the front surface C11, the rear surface RF of the folded cardboard box FB is held by the rear upper suction cup 41a and the rear lower suction cup 41b. Specifically, at the deployment start position, the swing support portion 45a has a posture extending upward with respect to the swing shaft 45c. That is, the front upper suction cup 42a and the front lower suction cup 42b at the deployment start position are higher than the front upper suction cup 42a and the front lower suction cup 42b at the deployment standby position. At the deployment start position, the front upper suction cup 42a and the front lower suction cup 42b are arranged side by side at different height positions. In other words, when the swing support part 45a swings and moves the front upper suction cup 42a and the front lower suction cup 42b upward, the front upper suction cup 42a and the front lower suction cup 42b arc around the swing shaft 45c. It moves from the deployment standby position to the deployment start position as shown (see FIG. 8).

  The folding cardboard box FB is moved by the swing support 45a swinging about the swing shaft 45c and moving the front upper suction cup 42a and the front lower suction cup 42b from the deployment start position to the deployment standby position. It is developed while moving in the direction indicated by the arrow AR in FIG.

  Specifically, the swing support part 45a changes the posture (inclination) of the tip with respect to the main part as the folding cardboard box FB moves downward. When moving from the deployment standby position to the deployment start position, the main portion and the tip end portion extend linearly. Thereafter, when moving from the deployment start position to the deployment standby position, the link mechanism is driven by the air cylinder, and the inclination of the tip portion with respect to the main portion is gradually changed. Specifically, the posture of the distal end portion is gradually raised by the link mechanism as it moves to the lower position. With the change in the posture of the tip, the outer shape of the folded cardboard box FB (the angle between the front surface C11 and the left side surface C12) changes. When the swinging support portion 45a returns from the deployment start position to the deployment standby position, the tip portion raises a posture so as to have an angle of 90 ° with respect to the main portion. That is, the tip end portion adsorbs the left side surface C12 of the rectangular tube-shaped cardboard box TB in a state of standing up with respect to the horizontal plane at the end of the unfolding process.

  It should be noted that the front end portion is tilted after the bottom lid BC is formed on the rectangular cardboard box TB by the bottom lid forming portion 15 described later. That is, after the cardboard box B is formed, the tip portion extends in the direction in which the main portion extends.

(3-3-3) Auxiliary units The auxiliary units 47 and 48 are units for assisting the holding of the front surface FF of the folded cardboard box FB by the front surface holding mechanisms 42a and 42b. The auxiliary units 47 and 48 are also adsorbers. The auxiliary units 47 and 48 are attached to the swing support portion 45a as described above. The auxiliary units 47 and 48 are arranged such that the front upper suction cup 42a and the front lower suction cup 42b are partially attracted to the front FF of the corrugated cardboard box FB while the front upper suction cup 42a and the front lower suction cup 42b are not sucked. Adsorb the part. Of the plurality of auxiliary units 47 and 48, the two auxiliary units 47 attached to the tip of the swing support part 45a adsorb the left side surface C12. Further, the three auxiliary units 48 attached to the main part of the swing support part 45a suck the vicinity of the portion sucked by the front upper suction cup 42a and the front lower suction cup 42b.

(3-4) Bottom lid forming portion The bottom lid forming portion 15 is a mechanism for forming the bottom lid BC on the rectangular cardboard box TB. In other words, the bottom lid forming portion 15 is a unit that transforms the flaps C31 to C34 provided on the lower side of the rectangular tube portion TP into the bottom lid BC. The bottom lid forming part 15 is disposed in the vicinity of the front upper suction cup 42a and the front lower suction cup 42b at the deployment standby position. The bottom lid forming part 15 forms the bottom lid BC on the rectangular tubular cardboard box TB at a position where the unfolding operation of the folded cardboard box FB is completed.

  The bottom lid forming part 15 has a flap holding part and a flap pushing / bending part (not shown). The flap holding part holds the first ends in the width direction of the flaps C31 to C34. The flap pushing and bending portion pushes and bends the end portions (second end portions) of the flaps C31 to C34 located on the side opposite to the first end portion toward the inside of the rectangular tube portion TP. As a result, the first end of each of the flaps C31 to C34 is folded so as to overlap the second end of the adjacent flaps C31 to C34, so that the bottom cover BC of the cardboard box B is formed.

  The rectangular tube-shaped cardboard box TB (cardboard box B) in which the bottom cover BC is formed by the bottom cover forming unit 15 is then moved in the horizontal direction and then continues downward as indicated by an arrow D3 in FIG. It moves to the boxing device 90 through the fall path.

(4) Boxing device The boxing device 90 is a device that packs a plurality of articles in the cardboard box B. A plurality of articles are packed in a cardboard box B in a stacked state. When a predetermined amount of articles are packed in the cardboard box B, the boxing device 90 then rotates around the long side of the bottom cover BC of the cardboard box B as a rotation axis. As a result, the cardboard box B is delivered to the transport device 91 with the opening facing upward.

(5) Conveying Device The conveying device 91 is a device that carries the cardboard box B filled with articles to a subsequent process (a process outside the box making box filling system 100). The transport device 91 is disposed below the boxing device 90.

(6) Control Device The control device 92 is a device that controls the box making device 10, the boxing device 90, and the transport device 91 as described above. As shown in FIG. 9, the control device 92 is connected to each component included in the box-making boxing system 100 and transmits / receives a signal to / from each component.

  The control device 92 mainly includes a CPU 92a, a ROM 92b, a RAM 92c, and a hard disk 92d. The control device 92 includes a touch panel display, a keyboard, and the like (not shown).

  Further, the control device 92 controls the expansion process in the expansion unit 14 at predetermined time intervals. Specifically, the control device 92 drives the moving mechanisms 43 to 45 at predetermined time intervals to move the gripping mechanisms 41a, 41b, 42a, and 42b from the deployment standby position to the deployment start position.

  In addition, the control device 92 causes the deployment unit 14 to perform a deployment process by performing initial control and main control. In the process of executing the initial control and the main control, the rear upper suction cup 41a returns from the deployment start position to the deployment standby position. Further, the rear lower suction cup 41b moves from the deployment start position to the deployment standby position and the release position in the process of executing the initial control and the main control, and then returns to the deployment standby position. Further, the front upper suction cup 42a and the front lower suction cup 42b return from the deployment start position to the deployment standby position in the process of executing the initial control and the main control.

  Here, the initial control means that at least one of the two adjacent side surfaces C11 to C14 is slightly bent along the fold line portions FP1 and FP3, and the first two are performed by the two adjacent side surfaces C11 to C14. In this control, the moving mechanisms 43 to 45 are moved so that the angle θ12 is formed (see FIG. 10B). Here, the first angle θ12 is an angle smaller than the initial angle θ11 and larger than the final angle θ13 (see FIGS. 10A and 10E). The initial angle θ11 is an angle formed by two side portions adjacent to each other with the fold portions FP1 to FP4 sandwiched between the folded cardboard boxes FB. That is, the initial angle θ11 is an angle close to 180 °. In addition, the final angle θ13 is an angle formed by two side portions adjacent to each other with the fold portions FP1 to FP4 sandwiched between the cardboard boxes FB. That is, the final angle θ13 is an angle close to 90 °.

  In the present embodiment, in the initial control, the angle formed by the back surface C13 and the right side surface C14 adjacent to each other with the fold portion FP3 is moved so as to be smaller than the initial angle θ11 and larger than the final angle θ13. The mechanisms 43 and 44 are moved. Specifically, the control device 92 drives the first moving mechanism 43 and the second moving mechanism 44 in a state where the rear upper suction cup 41a and the rear lower suction cup 41b are attracted to the rear face C13 and the right side face C14, respectively. As a result, the rear upper suction cup 41a and the rear lower suction cup 41b are slightly retracted, and the back surface C13 and the right side surface C14 are slightly bent along the fold portion FP3. By the initial control, the angle formed by the back surface C13 and the right side surface C14 changes to a first angle θ12 of, for example, 165 ° to 175 °. At this time, the third moving mechanism 45 supports the front upper suction cup 42a and the front lower suction cup 42b at the second height position. That is, the swing support part 45a supports the front upper suction cup 42a and the front lower suction cup 42b in a posture extending upward.

  The main control is control executed after the initial control. In the main control, at least one of the two adjacent side surface portions C11 to C14 is further bent along the fold line portions FP1 and FP3, and a final angle θ13 is formed by the two adjacent side surface portions C11 to C14. Thus, it is control which moves the moving mechanisms 43-45 (refer FIG. 10C-FIG. 10E).

  In the present embodiment, in the main control, the moving mechanisms 43 and 44 are moved so that the angle formed by the front surface C11 and the left side surface C12 adjacent to each other with the fold portion FP1 interposed therebetween is the final angle θ13. Specifically, the control device 92 drives the third moving mechanism 45 in a state where the front upper suction cup 42a and the front lower suction cup 42b adsorb the front C11. That is, the control device 92 swings the swing support part 45a from the second height position to the first height position. As a result, the front upper suction cup 42a and the front lower suction cup 42b move from the upper position to the lower position, and the front C11 and the left side C12 are largely bent along the fold portion FP1. By the main control, the angle formed by the front surface C11 and the left side surface C12 changes to a final angle θ13 close to 90 °.

  The rear upper suction cup 41a ends the suction of the rear face C13 when moved to the deployment standby position. The rear lower suction cup 41b sucks the right side surface C14 for a short time after moving to the deployment start position, and then ends the suction. In other words, the rear lower suction cup 41b ends the suction of the right side C14 after the front gripping mechanisms 42a and 42b start to move downward.

(7) Operations related to the unfolding process Next, operations related to the unfolding process of the folded cardboard box FB will be described with reference to FIGS. 8 and 10A to 10E. FIG. 8 shows a variation of the folded cardboard box FB. FIG. 8 shows the trajectories of the front surface gripping mechanisms 42a and 42b and the trajectories of the fold portions FP1 to FP4 with broken lines in the unfolding process. 10A to 10E show the suction states of the gripping mechanisms 41a, 41b, 42a, and 42b and the state in which the folded cardboard box FB is unfolded. In addition, among the gripping mechanisms 41a, 41b, 42a, and 42b shown in FIGS. 10A to 10E, the gripping mechanisms 41a, 41b, 42a, and 42b that are painted black indicate an adsorbed state and are not painted black. The gripping mechanism 41a shows a state where it is not attracted.

  FIG. 10A shows the gripping mechanisms 41a, 41b, 42a, and 42b at the deployment start position. Specifically, FIG. 10A shows a state of the gripping mechanisms 41a, 41b, 42a, and 42b at the start of deployment. As described above, the deployment start positions of the rear gripping mechanisms (rear upper suction cups and rear lower suction cups) 41a and 41b are locations where the rear gripping mechanisms 41a and 41b have received the folded cardboard boxes from the transfer unit 13. The front gripping mechanisms (front upper suction cup and front lower suction cup) 42a and 42b are supported at the second height position by the swing support portion 45a. The rear upper suction cup 41a sucks the back surface C13 above the fold portion FP3, and the rear lower suction cup 41b sucks the right side surface C14 below the fold portion FP3. Further, the front upper suction cup 42a adsorbs the front surface C11 below the fold portion FP1, and the front lower suction cup 42b adsorbs the portion of the front face C11 below the portion adsorbed by the front upper suction cup 42a. At this time, the angle formed by the back surface C13 and the right side surface C14 adjacent to each other with the fold portion FP3 of the folded cardboard box FB interposed therebetween is the initial angle θ11.

  FIG. 10B shows the state of the rear surface gripping mechanisms 41a and 41b that have returned to the deployment standby position by the initial control. The rear surface gripping mechanisms 41a and 41b are moved rearward by the moving mechanisms 43 and 44 in a state where the rear surface C13 and the right side surface C14 are adsorbed (see reference numeral D21 in FIG. 10B). Thereby, the angle formed by the back surface C13 and the right side surface C14 becomes the first angle θ12. The rear upper suction cup 41a ends the suction at the unfolding standby position (see FIG. 11B). Thereafter, the rear upper suction cup 41a returns to the deployment standby position. The moving mechanisms 43 and 44 move the rear surface gripping mechanisms 41a and 41b to the deployment standby position at the first speed.

  FIG. 10C shows the front gripping mechanisms 42a and 42b that have started to move downward by the main control. The front surface gripping mechanisms 42a and 42b are moved toward the first height position by the moving mechanism 45 with the front surface C11 adsorbed (see reference numeral D22 in FIG. 10B). The moving mechanism 45 moves the front surface gripping mechanisms 42a and 42b to the deployment standby position at the second speed. Here, the second speed is a speed different from the first speed. The rear lower suction cup 41b continues to suck the right side surface C14 until the front surface gripping mechanisms 42a and 42b start moving to the first height position. That is, the rear lower suction cup 41b ends the suction on the right side C14 when the front gripping mechanisms 42a and 42b start moving to the first height position. As a result, the rear lower suction cup 41b moves following the movement of the right side C14 downward with the unfolding of the folded cardboard box FP for a short time. Thereafter, the rear lower suction cup 41b returns to the deployment standby position.

  FIG. 10D shows a state of the front surface gripping mechanisms 42a and 42b that move further downward by the main control. At this time, the rear surface gripping mechanisms 41a and 41b are located far away from the back surface C13 and the right side surface C14. Specifically, the rear surface gripping mechanisms 41a and 41b are in the deployment standby position. In FIG. 10D, the front surface gripping mechanisms 42a and 42b are further moved toward the first height position by the moving mechanism 45 with the front surface C11 adsorbed (see reference numeral D23 in FIG. 10B). At this time, the folded cardboard box FB is moved to the lower position while the side surfaces are adsorbed only by the front surface gripping mechanisms 42a and 42b.

  FIG. 10E shows the front gripping mechanisms 42a and 42b in a state where the main control is finished. At the end of the main control, the front surface gripping mechanisms 42a and 42b are supported by the swing support portion 45a at the first height position. When the front surface gripping mechanisms 42a and 42b complete the movement to the first height position with the front surface C11 adsorbed, the angle formed by the adjacent side surface portions C11 to C14 across the fold portions FP1 and FP3 is The final angle θ13. That is, when the front surface gripping mechanisms 42a and 42b complete the movement to the first height position with the front surface C11 adsorbed, the unfolding process from the folded cardboard box FB to the rectangular tubular cardboard box TB is completed. .

  The folding cardboard box FB and the cardboard box B shown in FIG. 8 correspond to the folding cardboard box FB and the rectangular cardboard box TB shown in FIGS. 10B to 10E. That is, the folding cardboard box FB and the rectangular tube-shaped cardboard box TB shown in FIG. 8 show an aspect of the folding cardboard box FB deformed by the main control. By the main control included in the unfolding process, all of the four fold portions FP1 to FP4 of the folding cardboard box FB move from the upper position to the lower position while drawing an arc indicated by a broken line in FIG.

(8) Features (8-1)
In the box making apparatus 10 according to the above-described embodiment, the control device 92 performs initial control and main control during the unfolding process by the unfolding unit 14. In the initial control, the rear surface gripping mechanisms 41a and 41b are moved by the moving mechanisms 43 and 44, and the angles of the two adjacent side surfaces C11 to C14 are changed from the initial angle θ11 to the first angle θ12. The main control is control executed after the initial control. In the main control, the front gripping mechanisms 42a and 42b are largely moved by the moving mechanism 45, and the angles of the two adjacent side surfaces C11 to C14 are changed from the first angle θ12 to the final angle θ13. As a result, the flat folded cardboard box can be reliably developed into the rectangular cardboard box TB.

  When the folded cardboard box FB is conveyed with the fold portions FP2 and FP4 at the upper and lower ends as in the box making apparatus 10 according to the above embodiment, the inner walls of the first surface portions C13 and C14 and the second surface portions C11 and C12 In some cases, the inner wall is in close contact with the vacuum. Specifically, the folded cardboard box FB is in a state in which the back surface C13 and the right side surface C14, and the front surface C11 and the left side surface C12 are pressed from both sides while being stacked and transported. Thereby, the rectangular tube part TP is in a state close to a vacuum. When the folded cardboard box FB in this state is gripped by the gripping mechanisms 41a, 41b, 42a, and 42b and one surface (for example, the front surface C11 and the left side surface C12) is pulled greatly at once, the other surface portion (for example, the back surface C13 and The right side surface C14) is also dragged by the pulled surfaces C11 and C12. In other words, in order to unfold the folded cardboard box FB, when the side portions C11 and C12 on the front FF side are pulled greatly at once, the side portions C13 and C14 on the rear RF side are also pulled together and the front FF moves. The rear surface RF also moves in the direction of the movement. As a result, the folded cardboard box FB cannot be developed into the cylindrical cardboard box TB.

  However, the box making apparatus 10 according to the above-described embodiment performs the unfolding process of the folded cardboard box FB based on the initial control and the main control. In other words, the box making apparatus 10 folds the side surface parts C11 to C14 in two control steps. That is, the folded cardboard box FB is not greatly folded at a time. Specifically, the side portions C13 and C14 are slightly bent by initial control to form a small gap between the side portions C11 and C12 and the side portions C13 and C14, and then the side portions C11 and C12 are largely bent. Thereby, the flat folded cardboard box FB can be reliably developed into the rectangular tube-shaped cardboard box TB.

(8-2)
In the box making apparatus 10 according to the embodiment, the rear surface gripping mechanisms 41a and 41b grip the first surface portions C13 and C14 on both sides in the vertical direction of the fold portion FP3 in the height direction H of the folding cardboard box FB. Specifically, the rear surface gripping mechanisms 41a and 41b grip the upper back surface C13 and the right side surface C14 of the fold portion FP3. Further, the front surface gripping mechanisms 42a and 42b grip the second surface portion C11 below the fold portion FP1 in the height direction H of the folded cardboard box FB. Accordingly, the first surface portions C13 and C14 and the second surface portions C11 and C12 can be bent by a slight movement of the gripping mechanisms 41a, 41b, 42a, and 42b. As a result, the folded cardboard box FB can be easily developed into a rectangular cardboard box TB.

(8-3)
Further, in the initial control, the box making apparatus 10 according to the above embodiment moves the rear surface gripping mechanisms 41a and 41b and bends the first surface portions C13 and C14 along the fold portion FP3. In the main control, the front gripping mechanisms 42a and 42b are moved to bend the second surface portions C11 and C12 along the fold portion FP1. That is, different types of gripping mechanisms are mainly moved in the initial control and the main control. Specifically, in the initial control, the rear gripping mechanisms 41a and 41b are moved, and in the main control, the front gripping mechanisms 42a and 42b are moved.

  In order to improve the operating rate of the box making apparatus 10, it is preferable that the unfolding unit 14 unfolds the folded cardboard box FB as fast as possible. However, when the folding cardboard box FB is expanded at a high speed, as described above, the first surface portions C13 and C14 are dragged in the moving direction of the second surface portions C11 and C12, and the folding cardboard box FB is expanded into the cylindrical cardboard box TB. Inconvenient problems occur.

  However, the box making apparatus 10 according to the above embodiment has the second surface portion after the first surface portions C13 and C14 are bent first to form a gap between the first surface portions C13 and C14 and the second surface portions C11 and C12. C11 and C12 are folded and moved largely in the conveying direction of the cardboard box FB. The speed for moving the rear gripping mechanisms 41a and 41b in the initial control and the speed for moving the front gripping mechanisms 42a and 42b in the main control can be set to different speeds. Thereby, even if it is a case where the speed which bends 2nd surface part C11, C12 is raised, the cylindrical cardboard box TB can be expand | deployed reliably. That is, the folded cardboard box FB can be unfolded at high speed.

(8-4)
Moreover, as for the box making apparatus 10 which concerns on the said embodiment, the upper support part 43a supports the rear surface upper suction cup 41a so that a movement to the front-back direction is possible. The swing support part 45a supports the front upper suction cup 42a and the front lower suction cup 42b so as to be swingable between a first height position and a second height position. The second height position is a position higher than the first height position. In the initial control, the swing support part 45a supports the front upper suction cup 42a and the front lower suction cup 42b at the second height position. In the initial control, the lower support portion 44a moves to the rear position while the right side surface C14 is gripped by the rear lower suction cup 41b. Furthermore, in the main control, the swing support part 45a moves from the second height position to the first height position in a state where the front surface C11 is gripped by the front upper suction cup 42a and the front lower suction cup 42b. The rear upper suction cup 41a finishes gripping the rear face C13 after the front upper suction cup 42a and the front lower suction cup 42b start to move. That is, the box making apparatus 10 moves the first surface portions C13 and C14 side small to form a gap between the first surface portions C13 and C14 and the second surface portions C11 and C12, and then the second surface portions C11 and C12. Move side to side. Thereby, the first angle θ12 formed by the two adjacent side surface portions can be reliably changed greatly.

(8-5)
Further, in the box making apparatus 10 according to the above-described embodiment, the moving mechanism 45 has the swing shaft 45c. The swing shaft is disposed on one end side of the swing support portion 45a. The swing support part 45a is moved from the second height position to the first height position about the swing shaft 45c. At this time, the swing support part 45a is moved so that the swing end of the swing support part 45a draws an arc. Thereby, folding cardboard box FB can be smoothly developed in the shape of a square tube.

(8-6)
In the box making apparatus 10 according to the embodiment, the folding cardboard box FB has four fold portions FP1 to FP4, and all the four fold portions FP1 to FP4 move in an arc in the main control. To do. Thereby, the whole folding cardboard box SB can be moved downward from above. As a result, space saving of the box making apparatus 10 in a planar area can be achieved.

(9) Modification (9-1) Modification A
In the above embodiment, in the initial control, the rear surface gripping mechanisms 41a and 41b are retracted, and the angle formed by the back surface C13 and the right side surface C14 adjacent to each other with the fold portion FP3 is changed to the first angle θ12. Thereafter, in the main control, the front gripping mechanisms 42a and 42b are moved greatly downward, and the angle formed by the front surface C11 and the left side surface C12 adjacent to each other with the crease portion FP1 is changed greatly so as to be the final angle θ13. Let

  Here, in the initial control, instead of the rear surface gripping mechanisms 41a and 41b, the front surface gripping mechanisms 42a and 42b are slightly moved downward to form the front surface C11 and the left side surface C12 adjacent to each other with the fold portion FP1 interposed therebetween. The angle may be changed to the first angle θ12.

  However, in the initial control, the folded cardboard box FB can be unfolded more reliably when the rear gripping mechanisms 41a and 41b are moved than when the front gripping mechanisms 42a and 42b are moved.

DESCRIPTION OF SYMBOLS 10 Box making apparatus 12 Stack part 13 Transfer part 14 Unfolding part 15 Bottom cover formation part 21 1st lamination | stacking part 22 2nd lamination | stacking part 22a Contact surface 23 Front plate 24 Back plate 25 Insertion mechanism 31 Separation mechanism 32 Upper transfer mechanism 41a Rear surface Upper suction cup (first gripping part, rear gripping mechanism, gripping mechanism)
41b Rear lower suction cup (first gripping part, rear gripping mechanism, gripping mechanism)
42a Front upper suction cup (second gripping part, front gripping mechanism, gripping mechanism)
42b Front lower suction cup (second gripping part, front gripping mechanism, gripping mechanism)
43 First moving mechanism (moving mechanism)
43a Upper support part (first support part)
43b 1st drive part 44 2nd moving mechanism (moving mechanism)
44a Lower support part (first support part)
44b 2nd drive part 45 3rd moving mechanism (moving mechanism)
45a Swing support part (second support part)
45b 3rd drive part 45c Oscillating shaft 211 Floor part 212 Roller 213 Belt 251 Upper plate 252 Vertical movement plate 252a Insertion part 311 Longitudinal moving sucker 312 Longitudinal moving mechanism 321 Lift 321a Claw part 322 Vertical moving sucker 322 Vertical movement sucker 90 Box packing device 91 Conveying device 92 Control device 100 Box-boxing system FF Front (second surface)
RF rear surface (first surface)
C11 front (second surface)
C12 Left side (second side)
C13 back (first surface)
C14 Right side (first side)
FP1 to FP2 Folded part FB Folding cardboard box TB Square tubular cardboard box B Cardboard box

Japanese Patent Laid-Open No. 10-7108

Claims (6)

A box making apparatus that unfolds a folded corrugated cardboard box that is folded into a flat shape to form a rectangular tubular cardboard box,
A gripping mechanism for gripping a plurality of side surfaces of the folded cardboard box;
A moving mechanism for moving the gripping mechanism;
Formed by the two adjacent side surface portions by bending at least one of the two adjacent side surface portions along a crease portion provided at a boundary between two adjacent side surface portions of the plurality of side surface portions. A control device for controlling the moving mechanism to change the angle to be changed from an initial angle close to 180 ° to a final angle close to 90 °;
With
The folded cardboard box is a first surface portion that is two side portions disposed on the first surface side, and two side surface portions that are disposed on the second surface side opposite to the first surface side. Including two sides,
The gripping mechanism is
A first gripping part for gripping the two side parts included in the first surface part;
A second gripping part for gripping the two side surface parts included in the second surface part;
Including
The first gripping portion grips the first surface portions on both sides in the vertical direction of the fold portion provided at the boundary between two side surface portions arranged on the first surface side in the height direction of the folding cardboard box. ,
The second gripping portion grips the second surface portion below the fold portion provided at the boundary between two side surface portions disposed on the second surface side,
The controller is
At least one of the two adjacent side surfaces is slightly bent along the crease portion, and the first two angles are smaller than the initial angle and larger than the final angle by the two adjacent side surfaces. An initial control for moving the gripping mechanism at a first speed by the moving mechanism as formed;
After the initial control, at least one of the two adjacent side surfaces is further bent along the fold portion so that the final angle is formed by the two adjacent side surfaces. A main control for further moving the gripping mechanism at a second speed by a moving mechanism;
Run
In the initial control, the first surface portion gripped by the first gripping portion is bent along the crease portion provided at the boundary between two side surface portions disposed on the first surface side, and is formed on the first surface portion. Controlling the moving mechanism so that a small gap is formed between the two side surfaces included in the two side surfaces included in the two side surfaces;
In the main control, the movement is performed so that the second surface portion gripped by the second gripping portion is bent along the crease portion provided at a boundary between two side surface portions disposed on the second surface side. Control mechanism,
The second speed that is the moving speed of the gripping mechanism in the main control is faster than the first speed that is the moving speed of the gripping mechanism in the initial control .
Box making equipment.   The control unit controls the moving mechanism so that the gripping of the first surface portion by the first gripping portion is finished after the second gripping portion starts to move after the initial control.
The box making apparatus according to claim 1.   In the initial control, the control unit does not move the second gripping part, but moves the first gripping part, thereby forming the first angle by the two side parts included in the first surface part. And controlling the moving mechanism so that the gap is formed,
The box making apparatus according to claim 1. A box making apparatus that unfolds a folded corrugated cardboard box that is folded into a flat shape to form a rectangular tubular cardboard box,
A gripping mechanism for gripping a plurality of side surfaces of the folded cardboard box;
A moving mechanism for moving the gripping mechanism;
Formed by the two adjacent side surface portions by bending at least one of the two adjacent side surface portions along a crease portion provided at a boundary between two adjacent side surface portions of the plurality of side surface portions. A control device for controlling the moving mechanism to change the angle to be changed from an initial angle close to 180 ° to a final angle close to 90 °;
With
The controller is
At least one of the two adjacent side surfaces is slightly bent along the crease portion, and the first two angles are smaller than the initial angle and larger than the final angle by the two adjacent side surfaces. An initial control for moving the gripping mechanism at a first speed by the moving mechanism as formed;
After the initial control, at least one of the two adjacent side surfaces is further bent along the fold portion so that the final angle is formed by the two adjacent side surfaces. A main control for further moving the gripping mechanism at a second speed by a moving mechanism;
Run
The first speed, which is the moving speed of the gripping mechanism in the initial control, and the second speed, which is the moving speed of the gripping mechanism in the main control, are different speeds.
The folded cardboard box is a first surface portion that is two side portions disposed on the first surface side, and two side surface portions that are disposed on the second surface side opposite to the first surface side. Including two sides,
The gripping mechanism is
A first gripping part for gripping the two side parts included in the first surface part;
A second gripping part for gripping the two side surface parts included in the second surface part;
Including
The first gripping portion grips the first surface portions on both sides in the vertical direction of the fold portion provided at the boundary between two side surface portions arranged on the first surface side in the height direction of the folding cardboard box. ,
The second gripping portion grips the second surface portion below the fold portion provided at the boundary between two side surface portions disposed on the second surface side,
The controller is
In the initial control, the movement is performed such that the first surface portion gripped by the first gripping portion is bent along the fold portion provided at a boundary between two side surface portions disposed on the first surface side. Control mechanism,
In the main control, the movement is performed so that the second surface portion gripped by the second gripping portion is bent along the crease portion provided at a boundary between two side surface portions disposed on the second surface side. Control mechanism,
The moving mechanism is
A first support part for supporting the first grip part so as to be movable in the front-rear direction;
A second support portion for swingably supporting the second gripping portion between a first height position and a second height position higher than the first height position;
Have
In the initial control, the second support portion supports the second grip portion at the second height position, and the first support portion has the first surface portion gripped by the first grip portion. Move to the rear position in the state,
In the main control, the second support portion moves from the second height position to the first height position in a state where the second surface portion is gripped by the second grip portion, and 1 gripping part finishes gripping of the first surface part after the second gripping part starts to move;
Box making equipment . The moving mechanism further includes a swing shaft disposed on one end side of the second support portion,
The second support portion moves the second grip portion from the second height position to the first height position so as to draw an arc around the swing axis.
The box making apparatus according to claim 4. The folding cardboard box has four fold portions,
In the main control, all of the four fold portions move while drawing the arc.
The box making apparatus according to claim 5.

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