JP2012218745A - Cartoning machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cartoning machine capable of correctly positioning a carton which is folded flat while improving the productivity.SOLUTION: The cartoning machine 1 includes a carton magazine 11 for storing flat cartons Cf in a stacked condition, a conveyor 13 for conveying the flat cartons Cf drawn out from the carton magazine 11, a positioning guide 14 capable of stopping the movement of the flat cartons Cf which are continuously moved by the conveying inertia by the conveyor 13, and determining the position of opening in a box shape, and a vacuum conveyor 15 which sucks and holds the flat cartons Cf conveyed by the conveyor 13, and delivers them to the positioning guide 14. Thus, even when the conveying speed is increased to improve the productivity, the vacuum conveyor 15 sucks and holds the flat cartons Cf, and delivers them to the positioning guide 14, and any throw-off or bounce of the flat cartons Cf by the conveying inertia by the conveyor 13 can be avoided, and the flat cartons can be correctly positioned.

Description

  The present invention relates to a cartoning machine, and more particularly to a cartoning machine that suppresses the displacement of a carton while improving productivity.

  Long articles such as wrap films made of synthetic resin and aluminum foil used for food packaging and the like are wound and sold in a rectangular parallelepiped carton. A box body having a rectangular bottom plate, a front plate, a rear plate and two side plates erected on the four sides of the bottom plate, and one side being opened as a carton for accommodating a long wound body A lid plate that is pivotally connected to the rear plate to block the opening of the box body, a lid piece that is bent at a right angle to the lid plate, and a tip of the lid piece that is continuously removed. There are some cutout pieces that are provided with a lid piece and a cutout piece covering the front plate of the box body at the time of sale (for example, see Patent Document 1).

JP 2008-280076 A (paragraphs 0013-0023, etc.)

  The carton in which the above-described wound body is accommodated can be manufactured by closing the side plate after inserting the wound body into the carton having the side plate opened by a cartoning machine. In the cartoning machine, the carton with the side plates opened is accommodated in the carton magazine in a flat folded state, and the flat folded cartons are taken out from the carton magazine one by one and conveyed by a conveyor to be used as a positioning guide. After the collision and the position and direction are determined, the flat carton is opened in a cylindrical shape, and preparations for accommodating the wound body are completed.

  When manufacturing a carton in which a wound body is housed by a cartoning machine, if the transport speed of a carton folded flat is increased to improve productivity, the carton will bounce when it collides with the positioning guide. In some cases, the position and orientation were not properly determined.

  In view of the above-described problems, an object of the present invention is to provide a cartoning machine capable of correctly positioning a carton folded flat while improving productivity.

  In order to achieve the above object, the carting machine according to the first aspect of the present invention, for example, as shown in FIG. 1, accommodates a flat carton Cf, which is a carton that has a side opening and is folded flat. A carton magazine 11 to be transported; a transport conveyor 13 for transporting the flat carton Cf drawn out from the carton magazine 11; and a width Cfw (for example, see FIG. 2C) of the flat carton Cf from the transport direction D end of the transport conveyor 13 A positioning guide 14 for determining a position at which the flat carton Cf is opened in a box shape by stopping the movement of the flat carton Cf that can continue to move due to the inertia of the transport by the transport conveyor 13; The flat carton Cf that is installed above 13 and is transported to the transport conveyor 13 is sucked and held to position the positioning cart. And a vacuum conveyor 15 to deliver to de 14.

  With this configuration, a vacuum conveyor that sucks and holds the flat carton and delivers it to the positioning guide is provided, so even if the transport speed is increased to improve productivity, the flat carton can be skipped by the inertia of the transport by the transport conveyor. Therefore, the flat carton can be prevented from colliding with the positioning guide and bounced back, so that positioning by the positioning guide can be performed correctly.

  Further, as shown in FIGS. 1 and 3, for example, the carting machine according to the second aspect of the present invention is the same as the cartoning machine 1 according to the first aspect of the present invention. A pair of protrusions 13c provided at intervals exceeding the width of 15 and having protrusions 13c for adjusting the direction of the flat carton Cf to be conveyed.

  If comprised in this way, the shift | offset | difference of the direction of a flat carton can be corrected.

  Further, for example, as shown in FIG. 1, the carting machine according to the third aspect of the present invention is a cartoning machine 1 according to the second aspect of the present invention, which A vacuum conveyor 15 is provided so that the end thereof is positioned in the vicinity of the position where the flat carton Cf drawn out from the carton magazine 11 is placed on the transport conveyor 13, and a protrusion is provided between the vacuum conveyor 15 and the transport conveyor 13. The vacuum conveyor 15 is disposed so that the distance S having a distance shorter than the height of 13c is formed.

  If comprised in this way, the flat carton pulled out from the carton magazine will be promptly drawn into the space between the vacuum conveyor and the transfer conveyor, and it can be avoided that the flat carton pulled out runs on the protrusion. Thus, it is possible to prevent the pulled flat carton from being conveyed while riding on the protrusion.

  Moreover, when the carting machine according to the fourth aspect of the present invention is shown with reference to FIG. 1, for example, in the cartoning machine 1 according to the second aspect or the third aspect of the present invention, the conveyor 13 Is different from the conveyance speed of the vacuum conveyor 15.

  If comprised in this way, it can suppress that the situation where a protrusion does not contact a flat carton can suppress, and it can suppress that the direction of a flat carton shifts.

  According to the present invention, even if the conveyance speed is increased to improve productivity, it is possible to avoid the flat carton from being skipped due to the inertia of the conveyance by the conveyance conveyor. As a result, the flat carton collides with the positioning guide. Since rebounding can be avoided, positioning by the positioning guide can be performed correctly.

It is a conceptual diagram which shows schematic structure of the carting machine which concerns on embodiment of this invention. (A) is a perspective view which shows the use condition of the product manufactured with the cartoning machine which concerns on embodiment of this invention, (B) is an expanded view of a carton, (C) is a top view of a flat carton. It is a fragmentary perspective view which shows schematic structure of a carton magazine. (A) is the perspective view which looked at the vacuum conveyor from the bottom face side, (B) is the side view around a vacuum conveyor. (A) is a conceptual diagram around the conveyance conveyor of the carting machine which concerns on embodiment of this invention, (B) is a conceptual diagram around the conventional conveyance conveyor.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or similar members are denoted by the same or similar reference numerals, and redundant description is omitted.

  First, referring to FIG. 1, a schematic configuration of a carting machine 1 according to an embodiment of the present invention will be described. FIG. 1 is a conceptual diagram showing a schematic configuration of the carting machine 1. The cartoning machine 1 includes a carton magazine 11 that accommodates and stores flatly folded cartons (hereinafter referred to as “flat carton Cf”), a transport conveyor 13 that transports the flat carton Cf to a predetermined place, a positioning guide 14, Vacuum conveyor 15, carton conveyor 31 that conveys carton C formed by flattening flat carton Cf, roll conveyor 21 that conveys roll R inserted into carton C, and insertion that inserts roll R into carton C A device 41 and a control device 60 are provided. In the following description, when referring to the configuration of the cartoning machine 1, FIG. 1 will be referred to as appropriate.

  FIG. 2A shows a usage state of the product P manufactured by the cartoning machine 1. The product P is configured such that a roll R is accommodated in a carton C. In the present embodiment, the roll R is obtained by winding a synthetic resin wrap film F. The carton C is a paper box, and includes a main body Cb in which one surface of an elongated rectangular parallelepiped box is an opening Ch, and a lid Cc that covers the main body Cb around the opening Ch so as to cover the opening Ch. Has been. FIG. 2B shows a development view of the carton C. The carton C before the roll R is inserted is formed in a rectangular tube shape in which the cut pieces Ccc of the lid Cc are overlapped and bonded to the front plate Cbf of the main body Cb, and both ends are opened. A flat carton Cf is formed by folding the cylindrical carton C along an opposing ridgeline. FIG. 2C shows a plan view of the flat carton Cf.

  With reference to FIG. 3 and FIG. 4 together with FIG. 1, the configuration around the carton magazine 11, the transfer conveyor 13, the positioning guide 14, and the vacuum conveyor 15 will be described. FIG. 3 is a partial perspective view showing a schematic configuration of the carton magazine 11. 4A is a perspective view of the vacuum conveyor 15 as viewed from the bottom surface side, and FIG. 4B is a side view around the vacuum conveyor 15. As described above, the carton magazine 11 is a constituent member that accommodates the flat carton Cf in an overlapping manner. The carton magazine 11 includes a front stay 11f and a rear stay 11b that support the long side of the flat carton Cf, and a lateral stay 11s that supports the short side of the flat carton Cf. Each stay 11f, 11b, 11s extends in the direction in which the flat carton Cf overlaps. In the present embodiment, two front stays 11f and two rear stays 11b are provided, and two horizontal stays 11s are provided, one on each side. At the lower end of each stay 11f, 11b, 11s, a support claw 11p that supports the bottom surface of the flattened carton Cf at the bottom of the stacked flat cartons Cf is provided. When the flat carton Cf inside the carton magazine 11 is flat, the support claw 11p supports this, and when the flat carton Cf bends, the flat carton Cf passes between the support claws 11p and passes through the carton magazine 11. It is comprised so that it may go out from the lower part of. In the present embodiment, the stays 11f, 11b, and 11s are inclined and installed so that the bundle of stacked flat cartons Cf is held in an inclined state with respect to the vertical line (see FIG. 1).

  Below the carton magazine 11, a suction cup 12 for taking out the flat carton Cf from the carton magazine 11 is provided. The suction cup 12 has a suction cup 12c that is in close contact with the flat carton Cf and an arm 12a that moves the suction cup 12c up and down. The suction cup 12c is attached to the side surface of one end of the arm 12a. The arm 12a has a suction cup 12c facing upward (in the direction of the carton magazine 11), and an end opposite to the end to which the suction cup 12c is attached is attached to a drive rod (not shown). In the present embodiment, four sets of arms 12a to which the suction cups 12c are attached are attached to a drive rod (not shown), and the suction force of the flat carton Cf is improved. Each time the drive rod (not shown) makes one rotation around the axis, the suction cup 12 causes the arm 12a to swing so that the suction cup 12c side moves up and down with the end of the drive rod (not shown) as a fulcrum. It is configured. The suction cup 12 is configured to take out the flat carton Cf in the carton magazine 11 and place it on the conveyor 13 when the arm 12a swings. Further, a vacuum plate (not shown) that attracts the flat carton Cf toward the transport conveyor 13 is provided below the suction cup 12c of the suction cup 12, and the flat carton Cf placed on the transport conveyor 13 is transported by the transport conveyor 13. It is comprised so that it can suppress leaving.

  The transport conveyor 13 is a device that transports the flat carton Cf taken out from the carton magazine 11 to a predetermined place. The predetermined place here is the vicinity of the place where the flat carton Cf is expanded in a cylindrical shape. The conveyor 13 has an endless belt 13v stretched around two pulleys 13p (see FIG. 1). In the present embodiment, a sprocket is used as the pulley 13p, and a roller chain is used as the endless belt 13v. The endless belt 13v is provided with a plurality of claws 13c as protrusions at predetermined intervals in such a manner as to protrude outside the endless belt 13v. In the present embodiment, two such endless belts 13v are provided in pairs, and a virtual line connecting the claws 13c forming a pair of each endless belt 13v is a direction in which the flat carton Cf is conveyed ( Hereinafter, it is adjusted so as to be orthogonal to the “conveying direction D”. On both sides of each endless belt 13v, a slide base 13h on which the flat carton Cf slides on the upper surface is disposed. The slide base 13h is disposed so that the flat upper surface is horizontal at a position above the upper end of the endless belt 13v and below the upper end of the claw 13c. One end of the slide base 13h is located below the carton magazine 11, and is arranged so as to extend on the side opposite to the direction in which the carton magazine 11 is tilted with respect to the vertical line. The sliding base 13h is arranged so as not to interfere with the suction cup 12 that performs a swinging motion. The conveyor 13 is provided in such a manner that the endless belt 13v extends in a direction orthogonal to the long side of the flat carton Cf in plan view. The endless belt 13v is moved in the direction from the one end on the carton magazine 11 side to the other end (conveying direction D) on the upper surface side of the slide base 13h by the pulley 13p being rotated by a drive source (not shown). It is configured. The conveyance conveyor 13 is configured such that the conveyance speed of the flat carton Cf (the movement speed of the conveyor) is variable, and can be set to an arbitrary conveyance speed within a predetermined range.

  The positioning guide 14 (see FIGS. 1 and 4B) is a component that determines the position where the flat carton Cf that has been linearly moved by the conveyor 13 is stopped and the flat carton Cf is expanded into a cylindrical shape. . The positioning guide 14 has a column portion 14b formed in a quadrangular column shape with a rectangular (rectangular or square) cross section, and a projection 14p formed in a beam shape. The positioning guide 14 is provided such that the two column portions 14b extend vertically with the vacuum conveyor 15 interposed therebetween, and the protrusion 14p extends horizontally so as to connect the lower ends of the two column portions 14b. The protrusion 14p is attached in such a manner that it protrudes closer to the transport conveyor 13 than the pillar 14b. The protruding portion 14p is chamfered on the upper side of the portion protruding to the transport conveyor 13 side from the column portion 14b. The positioning guide 14 is provided away from the end (conveyance direction end) of the transport conveyor 13 on the downstream side in the transport direction D in the transport direction D by a width Cfw (see FIG. 2) of the flat carton Cf. By providing in this way, it is avoided that the flat carton Cf transported by the transport conveyor 13 is caught between the transport conveyor 13 and the positioning guide 14 and clogged. The arrangement of the positioning guide 14 in the height direction will be described later. In addition, a suction rod (not shown) that can adsorb the flat carton Cf and reciprocate up and down is disposed below the flat carton Cf at a position where the flat carton Cf collides with the positioning guide 14. The flat carton Cf is adsorbed by a suction bar (not shown) that has risen when it collides with the positioning guide 14, and when it is pulled downward as the suction bar (not shown) descends, the protrusion 14p of the positioning guide 14 When the part caught on the left is left, it opens in a box shape (tubular shape).

  The vacuum conveyor 15 is a device that sucks and holds the flat carton Cf transported to the transport conveyor 13 and delivers it to the positioning guide 14. As shown in FIG. 4A, the vacuum conveyor 15 includes a wide endless belt 15v having a width of about 1/5 to 3/4 of the long side length Cfv (see FIG. 2) of the flat carton Cf. A pulley 15p that moves the wide endless belt 15v while applying tension to the wide endless belt 15v, a guide 15h provided along the wide endless belt 15v on the side of the conveyor 13 (below the pulley 15p), a chamber 15c, have. In FIG. 4A, a part of the wide endless belt 15v is notched for convenience of explanation. A large number of long holes 15vd are formed in the wide endless belt 15v. The long holes 15vd are formed at a predetermined interval in the length direction of the wide endless belt 15v so that the longitudinal direction coincides with the width direction of the wide endless belt 15v. The predetermined interval is smaller than the distance obtained by subtracting the width of the long hole 15vd from the width Cfw of the flat carton Cf (see FIG. 2) from the viewpoint of ensuring that the long hole 15vd overlaps the flat carton Cf. Any distance. In the present embodiment, the length of the long hole 15vd is formed to be about 1/3 of the width of the wide endless belt 15v, and the long holes 15vd continuous at a predetermined interval are formed in the wide endless belt 15v in two rows. Yes.

  The pulley 15p has a shaft 15pa passing through the center thereof, and the shaft 15pa is configured to be fixed to a frame (not shown) of the cartoning machine 1 via a bearing (not shown). A wide endless belt 15v is stretched around the pulley 15p, and the tension of the stretched wide endless belt 15v can be adjusted by adjusting the fixed position of the shaft 15pa. Alternatively, a tension adjusting pulley (not shown) other than the two pulleys 15p shown in the figure may be interposed in the wide endless belt 15v, and the tension may be adjusted by adjusting the position of the tension adjusting pulley (not shown). Good. The guide 15h is provided inside the wide endless belt 15v that is stretched and formed into an annular shape. The guide 15h is a member formed in a plate shape having the same width (or slightly narrower) as the wide endless belt 15v, and its length is formed as long as possible without interfering with the pulley 15p. The guide 15h has a space in which air flows (becomes a suction channel 15r). Further, the guide 15h is formed with a groove-like gap 15g that is formed along the row of the long holes 15vd arranged at a predetermined interval and communicates with the suction flow path 15r. Two gaps 15g are formed corresponding to the number of rows of the long holes 15vd. The guide 15h is provided so as to be in contact with the wide endless belt 15v on the transport conveyor 13 side (below the pulley 15p).

  The outer shape of the chamber 15c is substantially cubic, and is provided so as to cover the central portion in the conveyance direction D of the wide endless belt 15v on the side opposite to the side close to the guide 15h (upper side of the pulley 15p). . The chamber 15c includes a rectangular plate-shaped top plate 15cu formed in a hollow shape, legs 15cs extending perpendicularly to the top plate 15cu from the four corners of the top plate 15cu, and an outer peripheral plate 15cb closing between the adjacent legs 15cs. Have. A flexible air guide 15t is connected to the top plate 15cu, and the hollow portion of the top plate 15cu and the inside of the air guide 15t are in communication with each other. Each leg 15cs is formed in the shape of a hollow quadrangular prism, and is connected so that the end opposite to the side connected to the top plate 15cu is sandwiched from the side with respect to the guide 15h. The hollow portion of the leg 15cs communicates with the hollow portion of the top plate 15cu and the space inside the guide 15h. As a result, a suction channel 15r is formed from the inside of the air guide 15t to the gap 15g through the top plate 15cu, the legs 15cs, and the inside of the guide 15h. With such a configuration, the vacuum conveyor 15 activates a blower (not shown) connected to the air guide 15t, so that a negative pressure acts on the gap 15g corresponding to the end of the suction flow path 15r. The flat carton Cf appearing in 15vd can be sucked and held. By moving the wide endless belt 15v while the flat carton Cf is sucked and held, the flat carton Cf can be conveyed while being sucked and held. The vacuum conveyor 15 is configured such that the conveyance speed of the flat carton Cf (the movement speed of the conveyor) is variable, and can be set to an arbitrary conveyance speed within a predetermined range. In the present embodiment, the conveyance speed of the vacuum conveyor 15 is set slower than the conveyance speed of the conveyance conveyor 13.

  The vacuum conveyor 15 is provided such that the surface of the wide endless belt 15v opposite to the side where the air guide 15t is provided faces the sliding base 13h of the transport conveyor 13 and is horizontal. At this time, the vacuum conveyor 15 is disposed so that the space S between the wide endless belt 15v and the slide base 13h is spaced by a distance S shorter than the height of the claw 13c. Here, since the distance between the pair of claws 13c provided in two rows is wider than the width of the wide endless belt 15v, the claws 13c do not contact the vacuum conveyor 15, and the long side of the flat carton Cf Therefore, the flat carton Cf can be reliably pushed in the transport direction D by the pair of claws 13c. Further, one end of the wide endless belt 15v (the end opposite to the conveyance direction D of the vacuum conveyor 15) is in the vicinity of the position where the flat carton Cf pulled out from the carton magazine 11 is placed on the conveyance conveyor 13, A vacuum conveyor 15 is provided so that the other end of the wide endless belt 15v extends across the positioning guide 14 to the opposite side. The vicinity of the position where the flat carton Cf is placed on the transport conveyor 13 typically does not obstruct the pulling out of the flat carton Cf from the carton magazine 11, and the flat carton Cf drawn out is equal to or higher than the height of the claw 13c. It is the closeness that is drawn into the interval S before jumping to. The wide endless belt 15v on the transport conveyor 13 side crosses the positioning guide 14 above the protrusion 14p of the positioning guide 14.

  Returning to FIG. 1 again, the description of the configuration of the cartoning machine 1 will be continued. The carton conveyor 31 is a device that transports the carton C in which the flat carton Cf is opened in a box shape, and extends horizontally in the transport direction D from below the position where the flat carton Cf collides with the positioning guide 14. The carton conveyor 31 is disposed at a position lower than the transport conveyor 13 so as to straddle the suction rod (not shown). The carton conveyor 31 is configured such that the transport speed of the carton C (conveyor moving speed) is variable, and can be set to an arbitrary transport speed within a predetermined range. The carton C conveyed to the carton conveyor 31 is open at both cylindrical end faces. The carton conveyor 31 is provided with a carton restrainer 32 so that the carton C is transported in a state where the opening surface of the carton C is a side surface with respect to the transport direction D. The carton holders 32 are provided at a predetermined pitch that is slightly larger than the width of the carton C (the distance in the direction orthogonal to the longitudinal direction).

  The roll conveyor 21 is a device that conveys the roll R from a place (not shown) where the roll R conforming to the standard of the product P (see FIG. 2) is prepared in the previous process to the side of the carton conveyor 31. The roll conveyor 21 is provided so as to run in parallel with the carton conveyor 31 at least a predetermined distance from a position below the positioning guide 14. The predetermined distance here is a distance necessary for inserting the roll R into the carton C. The roll conveyor 21 is provided at the same height as the carton conveyor 31 in a portion that runs parallel to the carton conveyor 31. The roll conveyor 21 is provided with a support recess 22d that prevents the roll R from shaking when the roll R falls. The support recesses 22d are formed at the same pitch as the pitch of the carton C placed on the carton conveyor 31. A moquette is stuck on the surface of the roll conveyor 21 (the surface on which the roll R is placed) in order to prevent the roll R from being damaged and to prevent the roll R from rotating about an unintended axis. The roll conveyor 21 is configured such that the conveyance speed of the roll R (moving speed of the conveyor) is variable, and can be set to an arbitrary conveyance speed within a predetermined range. In the present embodiment, the roll conveyor 21 and the carton conveyor 31 are configured to be driven by sprockets (not shown) having the same standard and the same number of teeth respectively attached to the same drive shaft (not shown). As a result, they are synchronized at the same conveying speed.

  The insertion device 41 is a device that inserts the roll R conveyed to the roll conveyor 21 into the carton C conveyed to the carton conveyor 31. The insertion device 41 has an insertion rod 42 that pushes the roll R toward the carton C. In FIG. 1, the insertion rod 42 is shown to extend up and down for convenience of representation on a two-dimensional paper surface. However, in practice, the insertion rod 42 is parallel to the longitudinal direction of the roll R and the carton C and is It is arrange | positioned so that it may extend. The insertion rod 42 is attached to a circular chain (not shown) that circulates in an annular shape at the same pitch as the pitch of the support recesses 22d. The insertion bar 42 is disposed so as to sandwich the roll conveyor 21 between the insertion bar 42 and the carton conveyor 31. The insertion bar 42 is provided so as to draw a trajectory that runs parallel to the roll conveyor 21 at a portion where the roll conveyor 21 and the carton conveyor 31 run side by side. The insertion device 41 is configured to approach the carton conveyor 31 as the insertion rod 42 moves in the transport direction D when the circular chain (not shown) moves and the insertion rod 42 runs in parallel with the roll conveyor 21. ing. As a result, the roll R is pushed by the insertion rod 42 and inserted into the carton C as it moves in the transport direction D. The insertion device 41 is configured to be variable so that the moving speed of a circular chain (not shown) can be arbitrarily set within a predetermined range. In the present embodiment, the roll conveyor 21 and the carton It is set to synchronize at the same moving speed as the conveying speed of the conveyor 31.

  The control device 60 is a device that controls the operation of the cartoning machine 1, and can control the start / stop and moving speeds of the transport conveyor 13, the vacuum conveyor 15, the carton conveyor 31, the roll conveyor 21, and the insertion device 41. It is configured.

  Next, the operation of the cartoning machine 1 will be described. When the cartoning machine 1 is operated, the carton magazine 11 is filled with the flat carton Cf. Here, the flat carton Cf is a flat carton C that is folded and flattened so that it can be easily stored. However, immediately after the flat carton Cf is folded, it has a relatively high restoring force due to the elasticity of the paper (material), so that it is flat. The height (carton volume) up to the highest point when placed on the surface is relatively large. On the other hand, if time elapses with weight added, the carton volume becomes relatively small. The carton volume also varies depending on the basis weight of the material paper.

  With the conveyor 13 moving in the conveying direction D, the suction cup 12 swings up and down, so that the flat carton Cf at the bottom of the carton magazine 11 is taken out from the carton magazine 11 and transferred to the conveyor 13. Placed. At this time, the oscillation cycle and timing of the suction cup 12 are adjusted so that the flat cartons Cf are sequentially placed between the claws 13c provided at predetermined intervals in the transport direction D. When the flat carton Cf is placed on the conveyor 13, the larger the carton volume of the flat carton Cf, the more likely it is to rebound (if it bounces, it may cause inconvenience such as riding on the claw 13c). Since the flat carton Cf is attracted to the conveyor 13 by the plate (not shown), the rebound is suppressed even if the carton volume is relatively large.

  The flat carton Cf placed on the transport conveyor 13 is pushed in the transport direction D by the claw 13c. The flat carton Cf is pushed by two pairs of claws 13c separated in the longitudinal direction of the flat carton Cf (horizontal and perpendicular to the transport direction D), so that the longitudinal sides of the flat carton Cf are transported in the transport direction. The orientation is adjusted so as to be orthogonal to D. The flat carton Cf pushed by the claw 13 c enters the interval S between the transport conveyor 13 and the vacuum conveyor 15. At this time, since one end of the vacuum conveyor 15 is in the vicinity of the position where the flat carton Cf is placed on the transport conveyor 13, the flat carton Cf placed on the transport conveyor 13 quickly enters the interval S, and the carton volume Regardless of this, the bounce of the flat carton Cf can be avoided.

  When the flat carton Cf that has entered the space S reaches the lower side of the vacuum conveyor 15, the flat carton Cf comes into close contact with the wide endless belt 15v as air is sucked from the gap 15g through the long hole 15vd of the wide endless belt 15v. , Sucked to the vacuum conveyor 15. The flat carton Cf adsorbed on the vacuum conveyor 15 is transported in the transport direction D as the wide endless belt 15v moves. At this time, since the moving speed of the wide endless belt 15v is slower than the moving speed of the conveyor 13, the state in which the flat carton Cf is pushed by the claw 13c can be maintained, and the direction of the flat carton Cf Can be prevented from shifting. The difference in the moving speed between the wide endless belt 15v and the conveyor 13 is typically a distance that is half of the distance between the two claws 13c in the conveying direction D when the belt travels a distance that the two are moving in parallel. There is a difference. The flat carton Cf adsorbed to the wide endless belt 15v is slid on the surface of the wide endless belt 15v by being pushed by the claws 13c having different moving speeds.

  As shown in the conceptual diagram of FIG. 5A, when the flat carton Cf reaches the end of the conveyor 13, the claw 13c is detached from the flat carton Cf, and thereafter the flat carton Cf is positioned at the moving speed of the wide endless belt 15v. It will be conveyed to the guide 14. As shown in the conventional example of FIG. 5 (B), when the vacuum conveyor 15 (see FIG. 5 (A)) is not provided, the flat carton Cf transported to the transport conveyor 13B is directed toward the positioning guide 14B. It is skipped by the claw 13Bc. In the conventional example of FIG. 5B, when the carton volume is large, the tip of the skipped flat carton Cf may not reach the positioning guide 14B. Conversely, when the carton volume is small, the skipped flat carton Cf is The positioning guide 14B may collide and bounce back, and in any case, positioning in the positioning guide 14B becomes unstable. In the present embodiment shown in FIG. 5A, the flat carton Cf is transported by the vacuum conveyor 15 even after it is detached from the claw 13c, so that the flat carton Cf is brought into contact with the positioning guide 14 without excess or deficiency. The flat carton Cf can be reliably conveyed to an appropriate position.

  When the flat carton Cf comes into contact with the column portion 14b of the positioning guide 14, it is attracted to a suction bar (not shown) that has been lifted from below and pulled downward. The flat carton Cf pulled downward by a suction bar (not shown) is peeled off from the vacuum conveyor 15 and moves downward. The flat carton Cf pulled downward by a suction rod (not shown) is prevented from descending when the end on the downstream side in the transport direction D hits the protrusion 14p, so that one end side on the upstream side in the transport direction D Moves downward to form a carton C. The carton C is placed on the carton conveyor 31 and conveyed in the conveyance direction D. Next to the carton C transported to the carton conveyor 31, the roll R is transported to the roll conveyor 21. When the roll R and the carton C being conveyed reach the position of the insertion device 41, the roll R is pushed in the direction of the carton C by the insertion rod 42, and the roll R is inserted from the opening on the side surface of the carton C. When the carton C into which the roll R is inserted is further transported downstream in the transport direction D, the side opening is glued and closed (not shown) to become a product P (see FIG. 2).

  As described above, according to the cartoning machine 1 according to the present embodiment, the rebound when the flat carton Cf is placed on the transport conveyor 13 can be suppressed, and the carton machine 1 is directed to the positioning guide 14. Since the flat carton Cf can be reliably conveyed to an appropriate position, positioning can be performed correctly even if the conveyance speed of the flat carton Cf is increased to improve productivity.

  In the above description, it is assumed that the moving speed of the wide endless belt 15v is slower than the moving speed of the transport conveyor 13. However, the moving speed of the wide endless belt 15v is faster than the moving speed of the transport conveyor 13. It is good to be. In this case, the flat carton Cf adsorbed by the vacuum conveyor 15 is pressed against the claw 13c in front of the transport direction D, so that the direction of the flat carton Cf is adjusted.

1 Cartoning Machine 11 Carton Magazine 13 Conveyor 13c Protrusion 14 Positioning Guide 15 Vacuum Conveyor Cf Flat Carton Cfw Flat Carton Width D Conveying Direction

Claims (4)

A carton magazine for storing a flat carton, which is a carton that has a side opening and is folded flat;
A transport conveyor for transporting the flat carton drawn from the carton magazine;
A positioning guide provided at least a width of the flat carton from a conveyance direction end of the conveyance conveyor, the movement of the flat carton that can continue to move due to the inertia of conveyance by the conveyance conveyor is stopped, and the flat carton is boxed A positioning guide that determines the position to open into the shape;
A vacuum conveyor installed above the conveyor and sucking and holding the flat carton conveyed to the conveyor and delivering it to the positioning guide;
Cartoning machine. The transporting conveyor has a pair of protrusions provided at intervals exceeding the width of the vacuum conveyor, and the protrusions for adjusting the direction of the flat carton to be transported;
The carting machine according to claim 1. The vacuum conveyor is provided such that the end of the vacuum conveyor on the opposite side in the transport direction is positioned in the vicinity of the position where the flat carton pulled out from the carton magazine is placed on the transport conveyor, and the vacuum conveyor The vacuum conveyor is disposed such that an interval shorter than the height of the protrusion is formed between the conveyor and the conveyor;
The cartoning machine according to claim 2. The transport speed of the transport conveyor is different from the transport speed of the vacuum conveyor;
A carting machine according to claim 2 or claim 3.

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