JP5186399B2 - Container molding equipment - Google Patents

Description

  The present invention relates to a container forming apparatus for forming a pillow-shaped incomplete container filled with a beverage into a rectangular parallelepiped completed container with a flap.

  Conventionally, this type of container forming apparatus is a container forming apparatus for forming a pillow-like unfinished container filled with a beverage into a rectangular parallelepiped finished container with a flap, and the upper end of the unfinished container is located above the container holder. The container holder has a container holder that can be held so that the container holder can be protruded from the molding station, and the container holder is intermittently driven so that the container holder is stopped at the folding station. And a pair of folding guides arranged on both sides of the pressing plate and extending in the direction of movement of the conveyor, and by lowering the pressing plate, an unfinished container is provided. The upper end of the fold is flatly folded so that the flap protrudes horizontally. Will bent in a direction to be, eventually the upper end of the incomplete container, has been known one which is made to overlap the folded portion flat (e.g., see Patent Document 1.).

  In this container forming apparatus, it is necessary to fold the flap by the bending guide rail after the upper end of the unfinished container is pushed to a predetermined position by the pressing plate. For this reason, the moldability of the container is left to the shape of the guide. Depending on the container material, there are differences in paper quality, surface slipperiness, and the like, and the moldability may change greatly due to the differences. Furthermore, when the flap and the bending guide are in sliding contact with each other, the contact portion of the flap with the bending guide may be damaged.

JP-A-63-55038

  An object of the present invention is to provide a container molding apparatus that can fold a flap without difficulty, without excessively stressing the container, regardless of the paper quality of the container material, the slipperiness of the surface, and the like. .

  A container molding apparatus according to the present invention is a container molding apparatus for molding a pillow-shaped incomplete container filled with a beverage into a rectangular parallelepiped completed container with a flap, and the end of the unfinished container to be the container bottom side Has a container holder that can be held so as to protrude upward from the container holder, and is intermittently driven so that the container holder is stopped at the folding station, and the container holder stopped at the folding station An anvil arranged to be close to and away from the container holder, a pair of wings arranged on both sides of the anvil so as to be able to open and close each other, and the container holder An anvil drive mechanism that drives the anvil so that the anvil when approaching can push the center of the end that should be the container bottom side of the unfinished container, and From both sides of the center of the end of the unfinished container that has been pushed into the container bottom by the anvil, the wing protrudes upward from both sides so that it can be pressed against the anvil. And a wing drive mechanism for driving the wing.

  In the container forming apparatus according to the present invention, the folds can be attached to the base portion of the portion that becomes the flap by the anvil and the wing. Therefore, the flap can be reliably folded without difficulty.

  Furthermore, if a folding guide is arranged downstream of the folding station in the conveyor movement direction so that both flaps overlap the center of the end of the unfinished container that should be the container bottom side, the base of the part that becomes the flap Even if the flap stands up due to the rebound force of the container material after the crease is attached to the container, it can be pressed down.

  Further, when the anvil driving mechanism includes a movable body that is movable with the anvil in a direction in which the anvil approaches and separates from the container holder and is driven by the crank mechanism, a movable body for moving the anvil is provided. The crank mechanism can be reliably reciprocated.

  The movable body is provided with a guide groove extending in a direction orthogonal to the moving direction, and the crank mechanism has a crank pin inserted into the guide groove, and a crank arm having a tip fixed to the crank pin. And a crank shaft to which the base portion of the crank arm is fixed, the crank mechanism can be configured in a simple structure.

  In addition, the wing drive mechanism includes a pair of suspension arms in which each wing is fixed to the lower end portion and the upper end portion is swingably supported around an axis perpendicular to the moving direction of the movable body, and the lower end portions of both arms If the arm swinging mechanism that swings both the suspension arms so as to be able to approach and separate from each other is provided, the reciprocating motion of the wing can be combined with the reciprocating motion of the anvil by the movable body.

  Each suspension arm is formed with a cam groove extending in the length direction of the suspension arm, and the cam rocker is inserted into the cam groove of each suspension arm and moved together with the movable body. If the cam mechanism is provided with the cam mechanism, the wing can be reliably opened and closed by the cam mechanism.

  According to the present invention, there is provided a container molding apparatus that can fold a flap without difficulty regardless of paper quality, surface slipperiness, etc. without excessively stressing the container. .

It is a side view of the packaging machine provided with the apparatus by this invention. It is a perspective view of the incomplete container manufactured by the packaging machine. It is a perspective view of the intermediate container. It is a perspective view of the completion container. It is a vertical longitudinal cross-sectional view of the delivery apparatus of the packaging machine. It is the same top view. FIG. 7 is a vertical sectional view perpendicular to the line VII-VII in FIG. 6. It is a side view of the folding device of the packaging machine. FIG. 9 is a cross-sectional view perpendicular to the line IX-IX in FIG. 8. FIG. 9 is a cross-sectional view perpendicular to the line XX in FIG. 8. It is a partially expanded sectional view of FIG. It is a partially expanded sectional view of FIG. It is a top view of the container conveyance apparatus of the packaging machine. FIG. 14 is a cross-sectional view perpendicular to the XIV-XIV line of FIG. 13.

  In the following description, with reference to FIG. 1, the right side of FIG. 1 is referred to as the front, the left side is referred to as the rear, and the left and right are the left and right sides when viewed from the front.

  Referring to FIG. 1, the packaging machine includes an unfinished container molding apparatus 11 that forms a pillow-shaped unfinished container C1 by sealing and cutting the content-filled container material tube T for each container length. A container delivery device 12 that receives the unfinished container C1 from the completed container molding device 11, and a finished container molding that delivers the unfinished container C1 from the container delivery device 12 and forms the delivered unfinished container C1 into a rectangular parallelepiped finished container C3 Device 13.

  2 shows an incomplete container C1 formed by the incomplete container forming apparatus 11, FIG. 3 shows an intermediate container C2 in the middle of forming by the completed container forming apparatus 13, and FIG. Each completed container C3 is shown.

  The unfinished container C1 has a pillow shape, in other words, a flat cylindrical shape as a whole, and has a strip-shaped upper seal portion St and a lower seal portion Sb at both ends. Each of the seal portions St and Sb is closed by overlapping and sealing the inner surfaces of the container material.

  The intermediate container C2 is formed by substantially folding the upper and lower ends of the unfinished container C1 to form a substantially rectangular parallelepiped container body B. At the same time, the triangular upper flap Ft and the lower flap Fb are formed from the upper and lower ends of the container body B. Is a protruding one.

  The completed container C3 is formed by superimposing an upper flap Ft on the top surface of the container body B of the intermediate container C2 and sealingly bonding the lower flap Fb on the side surface, and has a rectangular parallelepiped shape as a whole.

  Referring to FIGS. 5 and 6, the container delivery device 12 has a delivery route R1 extending from the lower side of the unfinished container molding device 11 toward the finished container molding device 13 in the forward and downward direction, and the beginning of the delivery route R1. The guide 21 that receives and guides the unfinished container C1 from the delivery route R1 to the end of the delivery route R1, and pushes the unfinished container C1 received by the guide 21 from the start end of the delivery route R1 to the end of the delivery route R1, thereby delivering the delivery route. The busher 22 that can push out the unfinished container C1 on the guide 21 from the end of R1, the stopper 23 that can stop the unfinished container C1 on the guide 21 at the end of the delivery path R1 so that the stop can be freely released, and the stopper 23. Stopper operating means 24 for operating the stopper 23 is provided so that the unfinished container C1 on 21 can be stopped and released freely.

  Below the unfinished container forming apparatus 11 and the starting end of the delivery path R1 are connected by an inclined chute 25.

  A drive sprocket 31 is disposed below the end of the delivery path R1, and a driven sprocket 32 is disposed below the start end of the delivery path R1. A toothed belt 33 is wound around the sprockets 31 and 32.

  The drive sprocket 31 is fixed to a horizontal drive shaft 34 extending in the left-right direction. A rotation shaft 35 is disposed behind the drive shaft 34 in parallel therewith.

  The guide 21 includes a plurality of rail members 21a that are inclined forward and downward and arranged in parallel along the delivery route R1.

  The busher 22 is composed of a plurality of outward projecting engagement pieces 22a attached to the outer surface of the belt at intervals larger than the length of the unfinished container C1.

  The stopper 23 includes an arm member 23a that is supported on the rotary shaft 35 so as to be swingable up and down, and a stopper member 23b that is provided at the tip of the arm member 23a so as to protrude upward. .

  The stopper actuating means 24 is constituted by a cam mechanism, which is fixed to the drive shaft 34 and has a substantially vertical disk-shaped cam 41 having an outer peripheral surface as a cam surface, and a roller 42 brought into contact with the cam surface. The arm follower 43 is fixed to the rotating shaft 35, and the tension coil spring 44 biases the follower 43 in a direction in which the roller 42 is not separated from the cam surface.

  The drive shaft 34 is driven to rotate in synchronization with the completed container forming apparatus 13. When the drive shaft 34 is rotated, the belt 33 is driven. At the same time, the cam 41 and the follower 43 are caused to follow this, so that the rotation shaft 35 rotates reversibly and the arm member 23a is swung up and down. When the arm member 23a is raised, the stopper member 23b is advanced upward from the rail member 21a, thereby stopping the stopper 23, and when the arm member 23a is lowered, the stopper member 23b is below the rail member 21a. Thus, the stop operation of the stopper 23 is released.

  The incomplete container C1 formed by the incomplete container forming apparatus 11 is dropped from the incomplete container forming apparatus 11, is received by the chute 25, and is guided to the start end of the delivery path R1. The unfinished container C1 at the beginning of the delivery route R1 is received by the guide 21. The incomplete container C1 received by the guide 21 is guided from the start end to the end of the delivery route R1 by the guide 21 while being pushed forward by the busher 22. When the unfinished container C1 is guided to the end of the delivery route R1, the stopper 23 that has been stopped until then is released from the stopping operation. The incomplete container C1 is pushed forward by the busher 22 relative to the rail member 21a.

  The unfinished container C1 that can be dropped in the chute 25 is received by the rail member 21a, but at that time, there is a possibility that it slips too much on the rail member 21a and slides down from the rail member 21a. This can be prevented by the stopper 23.

  As shown in FIG. 1, the completed container forming apparatus 13 includes a rotary forming conveyor 52 having eight radial container holders 51.

  The container holder 51 includes a fixed molding block 51a and a movable molding block 51b. The movable molding block 51b is swung with respect to the fixed molding block 51a so that the tip portion approaches and separates, thereby opening and closing the container holder 51. The unfinished container C1 and the completed container C3 are held so as to be movable forward and backward in the length direction with respect to the opened container holder 51. Further, the gap between the movable molding block 51b and the fixed molding block 51a of the container holder 51 when closed is a size corresponding to the thickness of the completed container C3. Further, the completed container C3 can be taken out in the width direction from the opened container holder 51.

  The forming conveyor 52 is intermittently driven in the clockwise direction indicated by an arrow A in FIG. 1 so that the container holders 51 are sequentially stopped by the same number of eight processing stations S1 to S8.

  One of the processing stations S1 to S8 is a supply station in which the container holder 51 is stopped at a position where the unfinished container C1 pushed out from the delivery device 12 can be held, and this is used as a first processing station S1 as a folding station. The second processing station S2, the third processing station S3, which is a heating station, the fourth processing station S4, which is a sealing station, and the sixth processing station S6, which is a discharge station, are sequentially provided. The fifth processing station S5, the seventh processing station S7, and the eighth processing station S8 are all idle stations.

  In the second to fourth processing stations S2 to S4, a folding device 53, a heater 54 and a sealing device 55 are sequentially arranged. A discharge device 56 is disposed in the sixth processing station S6. Further, a flap folding guide 57 is provided from the second processing station S2 to the fourth processing station S4 via the third processing station S3.

  8 to 10 show the folding device 53 in detail.

  The folding device 53 includes an anvil 61 disposed above the container holder 51 stopped at the second processing station S2 so as to be able to approach and separate from the container holder 51, and both sides of the anvil 61 with the anvil 61 interposed therebetween. And a pair of wings 62 arranged so as to be openable and closable with each other.

  Referring to FIGS. 11 and 12, the anvil 61 is composed of a rectangular plate-shaped forming block 61a whose moving direction is a thickness. A pressing surface 61b is formed on the bottom surface of the molding block 61a. The pushing surface 61b is provided with a protrusion 61c having a V-shaped cross section. Two side surfaces facing the opposite direction of the forming block 61a are formed in a taper shape, which serves as a pressure receiving surface 61d for the wing 62.

  Each wing 62 is composed of a plate-like wing member 62a bent in a J-shaped cross section. The opposing surfaces of both wings 62 are inclined pressing surfaces 62b with respect to the anvil pressure receiving surface 61d.

  A movable body 71 is connected to the anvil 61. The movable body 71 has a guide rod 72 extending in the moving direction of the anvil 61. The guide rod 72 is passed through a sliding guide cylinder 74 provided on the support 73. A roller mounting member 75 is fixed to the guide rod 72. A fixed rod 76 extending in parallel with the guide rod 72 is fixed to the roller mounting member 75. The rotation rod 76 is slidably passed through the support 73.

  The movable body 71 is formed with a long guide groove 77 extending in a direction orthogonal to the guide rod 72. The crank pin 82 of the crank mechanism 81 is inserted into the guide groove 77. The crankpin 82 is connected to the crankshaft 84 by a crank arm 83. The crankshaft 84 is passed through a rotation guide cylinder 85 provided on the support 73.

  On both sides of the guide rod 72, a pair of suspension arms 91 each having a wing 62 fixed to the lower end are suspended from the support 73. Each suspension arm 91 is formed with a cam groove 92 extending in the length direction. In each cam groove 92, a cam roller 93 attached to a roller attachment member 75 is inserted so as to be freely rotatable.

  The incomplete container C1 extruded from the delivery device 12 is held by the container holder 51 that is kept waiting at the first processing station S1.

  Before the container holder 51 is stopped by the first processing station S1, the stopper 23 can stop the incomplete container C1 on the end of the delivery path R1, and the container holder 51 is stopped by the first processing station S1. Thereafter, the stopper 23 is actuated by the stopper actuating means 24 so that the stop of the unfinished container C1 can be released.

  When the container holder 51 holding the unfinished container C1 is carried into the second processing station S2, the movable body 71 is reciprocated by the crank mechanism 81. Then, together with the movable body 71, the anvil 61 and both wings 62 are moved back and forth with respect to the unfinished container C1 held by the container holder 51, and at the same time, both wings 62 are opened and closed. As a result, the end portion to be the container bottom side of the unfinished container C1 is formed.

  The state of this molding is shown in detail in FIGS. The end to be molded is projected from the container holder 51. The center of the end is pushed by the anvil 61. By closing the open wings 62, the portions to be the upper flaps Ft are protruded upward from both sides of the center of the end portion pushed by the anvil 61 and pressed against the anvil 61. Thereby, a crease is attached to the base portion of the portion to be the upper flap Ft, and the unfinished container C1 is formed into the intermediate container C2.

  Thereafter, together with the movable body 71, the container holder 51, which is separated from the intermediate container C2 in which the anvil 61 and both wings 62 are formed, and holds the intermediate container C2, moves from the second processing station S2 to the third processing station S3. Be made. Finally, the upper and lower flaps Ft and Fb are heated by the heater 54 and sealed by the sealing device 55 to become a completed container C3. While being molded from the intermediate container C2 to the finished container C3, the flap folding guide 57 refolds the portion that should become the upper flap Ft as necessary so that it overlaps the center of the end pushed by the anvil 61. .

  13 and 14 show the discharge device 56 in detail.

  Shown is the container holder 51 which is stopped at the sixth processing station S6 in a diagonally downward front direction. A container transport device 101 is disposed at the lower peripheral portion of the container holder 51.

  The container transfer device 101 includes a first conveyor 111 that is a belt conveyor and a second conveyor 112 that is a fin conveyor.

  The first conveyor 111 has a plain belt 121 that is continuously circulated in a vertical plane at a constant speed by a driving means (not shown).

  The plain belt 121 has a linear upper path R2 having a width slightly larger than the width in the front-rear direction of the completed container C3 and extending leftward from the bottom of the container holder 51. A container linear guide rail 122 is provided along the front edge of the upper path R2, and a container standing guide rail 123 is provided along the rear edge. The container linear motion guide rail 122 extends in a straight line in the left-right direction when viewed from the plane, and is attached to the front edge of the upper path R2 over the entire length thereof. On the other hand, the container standing guide rail 123 is bent so as to shift forward as it goes to the left. The substantially right half of the container standing guide rail 123 is separated from the rear edge of the upper path R2, while the substantially left half of the container standing guide rail 123 is attached to the rear edge of the upper path R2. The distance between the container linear guide rail 122 and the container standing guide rail 123 is larger than the width of the belt 121 in the right half and equal to the width of the belt 121 in the left half.

  The second conveyor 112 is wound around the horizontal drive sprocket 131 disposed on the downstream side in front of the upper path R2, the horizontal driven sprocket 132 disposed on the upstream side thereof, and both the sprockets 131 and 132 so as to be horizontal. A toothed belt 133 that circulates in the interior and a plurality of vertical plate fins 134 that are attached to the outer surface of the toothed belt 133 so as to project laterally at regular intervals.

  A straight line connecting the centers of the two sprockets 131 and 132 with respect to the upper path R2 has a predetermined angle θ. Both sprockets are rotated counterclockwise at a constant speed in FIG.

  A linear portion of the toothed belt 133 that is moved from the driven sprocket 132 to the drive sprocket 131 forms a feed side path R3 of the fin 134, and subsequently, an arc portion that is moved around the drive sprocket 131 is a fin 134. The inversion path R4 is formed. The moving speeds of the tip end and the base end of the fin 134 that are moved along the sending side path R3 are the same. On the other hand, the moving speed of the tip of the fin 134 that is moved along the reversing path R4 is faster than the moving speed of the base end by an amount corresponding to the height of the fin 134, that is, the difference in rotational radius.

  The trajectory of the tip of the fin 134 that is moved along the sending path R3 is indicated by a virtual line VL, which corresponds to the low speed region, and the trajectory of the tip of the fin 134 that is moved along the reverse path R4 is indicated by an imaginary line VH. This corresponds to the high speed area. The low speed section imaginary line VL crosses the upper route R2 diagonally so that it goes forward as it goes to the left. On the other hand, the high speed section virtual line VH deviates forward from the upper route R2.

  The fins 134 are bent with respect to the toothed belt 133 so that the fins 134 that are moved along the feed-side path R3 are orthogonal to the moving direction of the plain belt 121. The interval between the two adjacent fins 134 is set to be equal to or slightly larger than the discharge pitch of the completed container C3 discharged from the completed container forming apparatus 13. The speed of the fin 134 that is moved on the feed path R3 is set to be the same as the moving speed of the plain belt 121 in the moving direction of the plain belt 121.

  When the container holder 51 is stopped at the sixth processing station S6 and at the same time or shortly thereafter, the completed container C3 held by the container holder 51 is released and the upper path is released. Fall on R2. At this time, it is placed on the plain belt 121 at the end shoulder portion on the side that becomes the bottom of the completed container C3. If it is left as it is, the finished container C3 may fall down, but the fin 134 moved from the upstream side in the belt moving direction is brought into contact with the finished container C3, and the container is supported by the belt 121 and the fin 134. Is prevented from falling. As it is, the completed container C3 is transported and moved along the container rising guide rail 123, and the completed container C3 is raised.

  Immediately before the finished container C3 transported to the end of the sending side path R3 tries to reach the reversing path R4 from the sending side path R3, the fins 134 that have been in contact with the finished container C3 will escape. . Thereby, there is no fear that the finished container C3 is overturned by the speed change of the fin 134 from the low speed to the high speed. Thereafter, the completed container C3 is conveyed only by the belt 121.

In the above description, the second conveyor 112 is shown as circulating the fins 134 in a horizontal plane, but is not necessarily a horizontal plane, and may be a plane inclined with respect to the horizontal plane.

  The container forming device according to the present invention is suitable for achieving the formation of a pillow-shaped incomplete container filled with a beverage into a rectangular parallelepiped completed container with a flap.

13 Container forming equipment
51 Container holder
52 Forming conveyor
61 Anvil
62 Wing
C1 unfinished container
C3 finished container
Ft, Fb flap
S2 Folding station

Claims (6)

  A container forming apparatus for forming a pillow-like unfinished container filled with a beverage into a rectangular parallelepiped finished container with a flap, with the end to be the container bottom side protruding upward from the container holder. And a forming conveyor that is intermittently driven so that the container holder is stopped at the folding station, and the container holder above the container holder stopped at the folding station. An anvil that can be moved closer to and away from each other, a pair of wings that can be opened and closed on both sides of the anvil, and an anvil when approaching the container holder are not The anvil drive mechanism that drives the anvil so that it can push the center of the end that should be the container bottom side of the finished container, and both wings when closed are Drive the both wings so that the part that should become the container flap protrudes upward from both sides of the center of the end part that should become the container bottom side of the unfinished container that has been inserted. A container forming apparatus comprising a wing drive mechanism.   The container forming apparatus according to claim 1, wherein a folding guide is disposed downstream of the folding station in the conveyor moving direction so as to overlap both flaps at the center of the end portion to be the container bottom side of the unfinished container.   The container forming apparatus according to claim 1, wherein the anvil driving mechanism includes a movable body that is movable with the anvil in a direction in which the anvil approaches and separates from the container holder and is driven by a crank mechanism.   A guide groove extending in a direction orthogonal to the moving direction is formed in the movable body, and a crank mechanism is inserted into the guide groove, a crank pin having a tip fixed to the crank pin, The container forming apparatus according to claim 3, wherein the container forming apparatus includes a crankshaft to which a base portion of the crank arm is fixed.   The wing drive mechanism has a pair of suspension arms in which each wing is fixed to the lower end and the upper end is supported to be swingable about an axis perpendicular to the moving direction of the movable body, and the lower ends of both arms approach each other. The container forming apparatus according to claim 3, further comprising an arm swinging mechanism that swings both the suspension arms so as to be separated from each other.   Each suspension arm is formed with a cam groove extending in the length direction of the suspension arm, and the arm swing mechanism has a cam roller inserted into the cam groove of each suspension arm and moved together with the movable body. The container forming apparatus according to claim 5, which is configured by a cam mechanism.

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