JP2007062773A - Packaging method, and packaging machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging method and a packaging machine capable of skillfully winding a wind-starting end around a work to be packaged and reliably and beautifully winding it when a packaging material is started to wind around the work. <P>SOLUTION: When a packaging material is started to wind around a work W to be packaged from a packaging material roll of a packaging head, a wind-starting end C' of the packaging material is clamped by a clamping member 41 at the position separated from the work W by the predetermined distance, a guide member 43 is abutted on one side of the packaging material close to the tip side from the clamping member 41, the other side of the packaging material close to the tip side from the guide member 43 is pressed by a pressing member 39 to bend the wind-starting end C' with the guide member 43 as a supporting point, and its wind-starting end C' is chucked by a chucking member 21. In this state, after releasing the clamp 41, the chucking member 21 is moved to tightly hold the wind-starting end C' by the work W, and then, the packaging material roll is turned around the work W. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a packaging method and a packaging machine used when packaging a long article to be packaged such as a pipe or a rod.

  Generally, manufactured pipes are bundled into a predetermined number of bundles and then packaged and shipped from a factory. Therefore, in order to wrap the pipes described above, a long packaging apparatus as shown in FIG. 11 has been developed.

  The long packaging apparatus includes an entrance conveyor 1 that transports a package W in which a predetermined number of pipes are previously bundled using a wire, and the primary packaging of the package W with a primary packaging material such as a stretch film. Primary packaging machine, for example, stretch packaging machine 2, secondary packaging material, for example, secondary packaging machine, for example, cross-sheet packaging machine 3, for secondary packaging with secondary packaging material, for example, cross-sheet, secondary A tertiary packaging machine, for example, a reinforcing sheet packaging machine 4, and a longitudinal direction of the article W to be packaged are further tertiary-wrapped with a tertiary packaging material, for example, a reinforcing sheet (for example, plastic pearl) at a plurality of locations in the longitudinal direction of the packaged article W. A band binding machine 5 for binding the binding bands so that the reinforcing sheets tertiary-packed at a plurality of locations cannot be unwound, and an outlet conveyor for transporting the article W to be packaged conveyed by the inlet conveyor 1 back to the inlet conveyor 1 It is equipped with a.

  The entrance conveyor 1 conveys the article to be packaged W to the exit conveyor 6 through the stretch wrapping machine 2, the cross sheet wrapping machine 3, the band binding machine 5, and the reinforcing sheet wrapping machine 4.

  The stretch wrapping machine 2 performs primary packaging by winding the stretch film A around the outer periphery of the article W to be packaged conveyed at a predetermined speed by the entrance conveyor 1 [see FIG. 12 (a)]. As the stretch film, for example, a stretch film made of PE (polyethylene) (for example, a thickness of 25 μm, a width of 500 mm, and a length of 2000 m) is used. The stretch wrapping machine 2 includes a stretch film roll in which a ring-shaped rotary fryer that allows the article to be packaged W to pass through a substantially central portion is rotatably supported, and a stretch film having a certain width is wound around the rotary fryer. A primary packaging head supported rotatably is attached. Then, by rotating the rotary fryer with an appropriate driving means, for example, a motor, the stretch film is wound out from the stretch film roll supported by the primary packaging head and wound around the outer periphery of the package W.

  The cross sheet packaging machine 3 is a secondary packaging by further winding the cross sheet B around the outer periphery of the article W on which the stretch film A is primarily packaged by the stretch packaging machine 2 [see FIG. 12 (b)]. . As the cross sheet, for example, a cross sheet (for example, a thickness of 1 mm, a width of 500 mm, and a length of 300 m) in which a foamed sheet made of PE (polyethylene) and a resin cloth made of PE are laminated is used. The cross sheet wrapping machine 3 rotatably supports a ring-shaped rotary fryer that allows the article to be packaged W to pass through a substantially central portion, and a cross sheet roll in which a cross sheet having a constant width is wound around the rotary fryer. Is attached to a secondary packaging head that is rotatably supported. Then, by rotating the rotary fryer with an appropriate driving means, for example, a motor, on the stretch film that is primarily packaged on the outer periphery of the package W while feeding the cross sheet from the cross sheet roll supported by the secondary packaging head. It is designed to be wrapped in a secondary package.

  The reinforcing sheet packaging machine 4 winds the reinforcing sheet C around the outer periphery of a plurality of locations (for example, 2 to 8 locations) in the longitudinal direction of the article W to be packaged in which the cross sheet B is secondarily wrapped by the cross sheet packaging machine 3. It is to be tertiary packaged [see FIG. 12 (c)]. As the reinforcing sheet, plastic pearl (for example, thickness 3 mm, width 500 mm, length 120 m) made of PP (polypropylene) is used. The plastic pearl has a structure in which a large number of cylindrical embosses, in which air is filled and sealed, are projected on a sheet. The reinforcing sheet wrapping machine 4 rotatably supports a ring-shaped rotating fryer that allows the article to be packaged W to pass through a substantially central portion, and a reinforcing sheet roll in which a reinforcing sheet having a certain width is wound around the rotating fryer. Is mounted with a tertiary packaging head that is rotatably supported. Then, by rotating the rotary fryer with an appropriate drive means, for example, a motor, the reinforcing sheet is fed out from the reinforcing sheet roll supported by the tertiary packaging head, and the primary packaging and the secondary packaging are performed on the outer periphery of the package W. It is designed to be wrapped around a stretch film and a cloth sheet and then wrapped in a tertiary package.

  The band binding machine 5 attaches the binding band D on the reinforcing sheet C tertiary-packaged in the article W to be packaged by the reinforcing sheet packaging machine 4 and binds the reinforcing sheet C so as not to be unwound [FIG. d) See]. As the binding band, for example, a PP band made of PP (polypropylene) (polypropylene band, for example, a thickness of 0.63 mm, a width of 15.5 mm, and a length of 2500 m) is used. The band binding machine 5 is provided with a gate-shaped arch for guiding a binding band on a table, and binding means for feeding, tightening, joining, and cutting the binding band below the table. After the article to be wrapped W is placed on the table in a state orthogonal to the portal arch, the binding band is wound around the arch by the binding means and wound on the reinforcing sheet tertiary-wrapped on the article W to be wrapped. At the same time, by tightening the binding band and joining and cutting the end of the band, the reinforcing sheet tertiary-packaged on the article W to be packaged is bound by the binding band.

  Next, operation | movement of the packaging apparatus comprised as mentioned above is demonstrated. First, an article W to be packaged in which a predetermined number of pipes are previously bundled using a wire or the like is supplied to the entrance conveyor 1, and the article W is conveyed by the entrance conveyor 1 until its starting end reaches the stretch wrapping machine 2. Here, the entrance conveyor 1 is stopped to temporarily stop the conveyance of the article W to be packaged. In this state, after the winding film end of the stretch film fed out from the stretch film roll of the primary packaging head of the stretch wrapping machine 2 is brought into close contact with the start end of the package W, the rotary fryer of the stretch wrapping machine 2 is rotated. Then, the primary packaging head is made to circulate around the start end portion of the article to be packaged W. Accordingly, the stretch film is wound around the outer periphery of the start end portion of the article W to be packaged while being stretched out from the stretch film roll of the primary packaging head.

  Then, when the stretch film is wound around the outer periphery of the starting end portion of the packaged object W one or more times concentrically, the entrance conveyor 1 is driven, and the packaged article W is conveyed by the entrance conveyor 1 at a predetermined speed. In this way, when the package W is conveyed at a predetermined speed and the primary packaging head is circulated around the package W at a predetermined speed, a stretch film is continuously spiraled around the outer periphery of the package W at a predetermined lead pitch. Then it is wound.

  When the end of the article to be packaged W is conveyed until it reaches the stretch wrapping machine 2, the entrance conveyor 1 is stopped to stop the conveyance of the article to be packaged W, and the stretch film is attached to the end of the article to be packaged W. Wrap in a core shape. When the stretch film is wound around the end of the package W one or more times in a concentric manner, the rotation of the rotary fryer is stopped, and the extra stretch film fed out from the stretch film roll of the primary packaging head is cut. The end of the winding is stopped at the end of the package W using the adhesiveness of the stretch film itself, and the primary packaging of the package W is completed.

  On the other hand, when the starting end portion of the article to be packaged W is conveyed to the cross sheet packaging machine 3 during the primary packaging to the article to be packaged W described above, the entrance conveyor 1 is stopped here to convey the article to be packaged W. Stop temporarily. In this state, the cross-sheet packaging machine 3 is rotated after the winding start end of the cross-sheet fed from the cross-sheet roll of the secondary packaging head of the cross-sheet packaging machine 3 is brought into intimate contact with the starting end of the article W to be packaged. The fryer is rotated, and the secondary packaging head is made to circulate around the start end portion of the article W to be packaged. Accordingly, the cross sheet is wound around the start end portion of the article W to be packaged while being fed out from the cross sheet roll of the secondary packaging head.

  Then, when the cross sheet is wound concentrically around the start end of the article W to be packaged, the entrance conveyor 1 is driven, and the article W is conveyed by the entrance conveyor 1 at a predetermined speed in the longitudinal direction. . In this way, when the package W is conveyed at a predetermined speed and the secondary packaging head is circulated around the package W at a predetermined speed, the cross sheet spirals at a predetermined lead pitch on the outer periphery of the package W. Wrapped continuously.

  When the terminal end of the article to be packaged W is conveyed until it reaches the cross sheet packaging machine 3, the entrance conveyor 1 is stopped and the conveyance of the object to be packaged W is temporarily stopped. Wrap in concentric form. Then, when the cross sheet is wound around the end of the package W one or more times in a concentric manner, the rotation of the rotary fryer is stopped and the excess cross sheet fed from the cross sheet roll of the secondary packaging head is cut. Then, the end of the winding is fixed to the end of the package W with an adhesive tape or the like, and the secondary packaging of the package W is completed.

  On the other hand, when a predetermined position in the longitudinal direction of the article to be packaged W (packaging position for tertiary packaging) is conveyed to the reinforcing sheet packaging machine 4 during the secondary packaging to the article to be packaged W, the entrance conveyor 1 is here. Is stopped to stop the transport of the article W to be packaged. In this state, after the winding start end of the reinforcing sheet fed from the reinforcing sheet roll of the tertiary packaging head of the reinforcing sheet packaging machine 4 is brought into close contact with the packaging position of the article W, the rotary fryer of the reinforcing sheet packaging machine 4 Is rotated, and the tertiary packaging head is rotated around the packaging position of the article W to be packaged. Accordingly, the reinforcing sheet is wound around the packaging position of the article W to be packaged while being fed out from the reinforcing sheet roll of the tertiary packaging head. Then, when the reinforcing sheet is wound concentrically around the packaging position of the article to be packaged W for a predetermined turn (for example, 2-3 turns), the rotation of the rotary fryer is stopped, and the reinforcing sheet roll of the tertiary packaging head is fed out. The excess reinforcing sheet is cut, and the end of the end of the winding is stopped at a predetermined position of the package W with an adhesive tape or the like. Thereafter, the above-described operation is repeated a predetermined number of times (for example, 1 to 7 times), and if the reinforcing sheet is wound around a plurality of packaging positions in the longitudinal direction of the package W, the tertiary packaging of the package W is completed.

  On the other hand, when the tip of the article to be packaged W is conveyed to the exit conveyor 6 during the above-described tertiary packaging to the article to be packaged W, the exit conveyor 6 is driven and the article to be packaged W is conveyed by the exit conveyor 6. . Then, after the tertiary packaging on the packaged object W is completed, the packaged article W that has been tertiary packaged is temporarily transferred to the outlet conveyor 6, and then the outlet conveyor 6 is driven in reverse to enter the packaged article W that is tertiary packaged. It conveys so that it may send back to the conveyor 1 side. And if the position in which the package W was tertiary-packed is conveyed until it reaches the band binding machine 5, the exit conveyor 6 will be stopped here and conveyance of the package W will be stopped. In this state, the band binding machine 5 is driven to wind the binding band on the reinforcing sheet tertiary-wrapped on the packaged object W, and the band is tightened and the band end is joined and cut to the packaged object W. Bundling the third-packed reinforcing sheet with a binding band. Thereafter, the above-described operation is repeated a predetermined number of times (for example, 1 to 7 times) and the reinforcing sheet, which is tertiary-wrapped at a plurality of packaging positions in the longitudinal direction of the package W, is bound with a binding band. Ends.

  As described above, first, the stretch film A is wound around the package W by the stretch wrapping machine 2 and primary packaging is performed, and then the cross-sheet B is wrapped around the primary packaged article W by the cross sheet packaging machine 3. Wrapping and secondary packaging, then, reinforcing sheet C is wound around the plurality of packaging positions in the longitudinal direction of the second package W by the reinforcing sheet packaging machine 4 and tertiary packaging is performed. By attaching the binding band D by the band binding machine 5 and binding the reinforcing sheet C on the reinforcing sheet C that is tertiary-wrapped at a plurality of locations in the longitudinal direction of the package W, the article to be packaged by the long packaging apparatus W is packaged.

  By the way, in the reinforcing sheet packaging machine 4, when the reinforcing sheet C is wound around the packaged article W, the extra reinforcing sheet C fed from the reinforcing sheet roll 7 is clamped by the clamp member 8 as shown in FIG. After that, the cutter 9 cuts the reinforcing sheet C closer to the package W from the position where the clamp member 8 clamps, and then passes the terminal taping unit 10 between the clamp member 8 and the package W. Thus, the terminal taping unit 10 causes the end of the winding end of the reinforcing sheet C to be fastened to the package W with an adhesive tape or the like.

  However, since it is necessary to provide a gap for allowing the terminal taping unit 10 to pass between the article to be packaged W and the clamp member 8, it is inevitable that the article to be packaged W and the clamp member 8 are separated from each other. Thus, when the to-be-packaged object W and the clamp member 8 are separated, when the reinforcing sheet C is wound around a new packaging position of the to-be-packaged object W, the reinforcing sheet C fed out from the reinforcing sheet roll 7 is removed. Since the winding start end C ′ is not in close contact with the package W, the winding start end C ′ of the reinforcement sheet C is not immediately wound around the package W at the beginning of winding of the reinforcement sheet C. It is not possible to wrap around the article to be wrapped W, or it is wound with the winding start end C ′ of the reinforcing sheet C folded, so that the reinforcing sheet C can be reliably and neatly wrapped around the article to be wrapped W. The problem of being unable to do so was revealed. In particular, when the reinforcing sheet C is hard and slippery plastic pearl, the plastic pearl is harder and more slippery than the stretch film or the cross sheet, so that the problem that the wrapping W cannot be reliably and neatly wound is remarkable. is there.

  Under such circumstances, an object of the present invention is to provide a packaging method and a packaging machine that can reliably and neatly wrap a packaging material around an article to be packaged without causing problems when starting the packaging material. To do.

  In order to achieve the above object, the method of the present invention provides a packaging material while the packaging material is rolled out from the packaging material roll by circulating the packaging material roll wound around the packaging material around the packaging material roll. In the packaging method for winding, when starting to wind the packaging material drawn from the packaging material roll around the packaged object, the winding start end of the packaging material is clamped from one side at a position away from the packaged object by a predetermined distance. In the state clamped by the guide member, the guide member is placed on one surface of the packaging material closer to the distal end side than the position where the clamping member is clamped, and the packaging material closer to the distal end side than the position where the guide member is addressed The other surface of the packaging material is pressed by the pressing member, the winding start end of the packaging material is refracted with the guide member as a fulcrum, and the winding start end of the refracted packaging material is chucked by the chuck member. The clamp of Moving the chuck member After the winding start end portion of the packaging material is held tightly to the packaged product, then the packaging material roll so as to revolve around the packaged articles.

  According to the above method, in the state where the winding start end portion of the packaging material fed out from the packaging material roll is clamped by the clamp member from one side at a position away from the packaged object, the packaging material begins to be wound. The end is refracted by the guide member and the pressing member, the winding start end of the bent packaging material is chucked by the chuck member, and the winding start end of the chucked packaging material is held in close contact with the package by the chuck member. Then, the packaging material roll is made to circulate around the article to be packaged. In such a state where the winding start end of the packaging material fed out from the packaging material roll is tightly held on the package object, the packaging head is wrapped around the package object to wind the packaging material around the package object. When the wrapping material is wound around the package object one or more times, the winding start end of the wrapping material is sandwiched between the package object and the wrapping material wrapped around the wrapping material. The starting end can be wrapped around the package. That is, since the winding start end of the packaging material is held in close contact with the package, the winding start end of the packaging material can be reliably wound around the package at the beginning of winding of the packaging material.

  In addition, air is blown to the winding start end of the packaging material that is tightly held on the package by the chuck member. When air is blown against the winding start end of the packaging material tightly held on the package by the chuck member, the entire winding start end of the packaging material is pressed by the wind pressure, and the winding start end of the packaging material is chucked. A portion that is not chucked by the member can be brought into close contact with the package.

  The apparatus of the present invention also includes a packaging head that rotatably supports a packaging material roll in which the packaging material is wound into a roll, and the packaging head is made to circulate around the article to be packaged. In the packaging machine that winds the packaging material from the packaging material roll of the packaging material and winds the packaging material fed from the packaging material roll around the packaging material, the winding start end of the packaging material is wrapped A clamp member that clamps from one side at a position that is a predetermined distance from the guide member, a guide member that is directed to one surface of the packaging material closer to the distal end side than the position at which the clamp member clamps, and the guide member A pressing member that refracts the winding start end of the packaging material with the guide member as a fulcrum by pressing the other surface of the packaging material closer to the tip side than the position to be peeled, and chucking the winding start end of the refracted packaging material Along with its chucked packaging The winding start portion and a chuck member for tightly held to be packaged.

  According to the above apparatus, when the packaging material fed from the packaging material roll of the packaging head is started to be wound around the packaged object, the winding start end of the packaging material is positioned at one side away from the packaged object by a predetermined distance. In a state where the clamp member is clamped from one side, after placing the guide member on one surface of the winding start end of the packaging material, the pressing member is pressed against the other surface of the winding start end of the packaging material. The winding start end of the packaging material is refracted with the guide member as a fulcrum. Next, the winding start end of the refracted packaging material is chucked by the chuck member, and the clamp member is released in this state, and then the chuck member is moved so that the winding start end of the packaging material is in close contact with the package. Let hold. Then, the packaging head is circulated around the packaged object, and the packaging material is wound around the packaged object while being fed out from the packaging material roll of the packaging head. In such a state that the winding start end of the packaging material is tightly held on the package object, the packaging head is wound around the package object so that the packaging material is wound around the package object. When the wrapping material is wrapped around the package object for one or more turns, the winding start end of the wrapping material is sandwiched between the package object and the wrapping material wrapped around it, and the winding start end of the wrapping material is It can be surely wound around the package.

  The guide member is a guide rod having a length over substantially the entire width of the packaging material. The guide member is wound in a posture parallel to the width direction of the winding start end of the packaging material clamped by the clamp member. It moves in contact with and separates from one surface of the starting end. In the state where the winding start end portion of the packaging material fed out from the packaging material roll is clamped by the clamp member, the guide rod body is moved so as to come into contact with one surface of the winding start end portion of the packaging material. The body is arranged so as to be directed to the winding start end of the packaging material. In this state, when the other surface of the winding start end portion of the packaging material is pressed by the pressing member, the winding start end portion of the packaging material is received and supported by the guide rod body and refracted to one surface side with the guide member as a fulcrum. The

  In addition, the pressing member is composed of a rod body that is rotatably supported around an axis orthogonal to the axis of the guide member, and rotates and presses and separates from the winding start end of the packaging material clamped by the clamp member. . In a state where the winding start end portion of the packaging material fed out from the packaging material roll is clamped by the clamp member, the guide member is placed on one surface of the winding start end portion of the packaging material, and then the pressing rod is used as the packaging material. The pressing rod is pressed against the other surface of the winding start end portion of the packaging material by rotating so as to contact the other surface of the winding start end portion. Thereby, the winding start end part of the packaging material is refracted to one surface side with the guide member as a fulcrum.

  The chuck member is provided with a means for moving back and forth and up and down. After the winding start end of the packaging material is refracted by the pressing member, the chuck member is advanced by the back and forth moving means to chuck the bent winding start end of the packaging material, and then the chuck member is raised by the up and down moving means. By making it contact | abut to a to-be-packaged object, the winding start end part of the packaging material drawn | fed out from the packaging material roll of a packaging head is closely_contact | adhered to a to-be-packaged object.

  In addition, air blowing means for blowing air to the winding start end portion of the packaging material tightly held on the package by the chuck member is provided. When air is blown by the air blowing means onto the winding start end of the packaging material that is tightly held on the package by the chuck member, the entire winding start end of the packaging material is pressed by the wind pressure, and the packaging material starts to wind. The part which is not chucked by the chuck member at the end can be brought into close contact with the package.

  According to the present invention, the packaging material roll is fed out from the packaging material roll in the packaging method and the packaging machine that winds the packaging material roll from the packaging material roll while the packaging material roll is wound around the packaging material roll. When starting to wind the packaging material around the package, the winding start end of the packaging material is held in close contact with the package by the chuck member. It is possible to reliably wrap the wrapping material, so that the wrapping material is not wound in a folded state, and the wrapping material can be reliably and neatly wrapped around the package. .

  Further, in order to blow air to the winding start end portion of the packaging material that is tightly held on the package by the chuck member, the entire winding start end portion of the packaging material is pressed by wind pressure, and the winding start end of the packaging material is pressed. The portion of the part that is not chucked by the chuck member is brought into intimate contact with the package, thereby preventing the winding start end of the packaging material from being bent from the middle in the width direction and the winding start of the packaging material. The end can be more reliably wound around the package. As a result, the packaging material can be reliably and neatly wound around the packaged item.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present embodiment relates to a reinforcing sheet packaging machine for wrapping a packaging material, for example, a reinforcing sheet C such as plastic pearl, around a packaged object W in which a predetermined number of pipes are previously bundled using a number wire or the like.

  First, the reinforcing sheet packaging machine will be described. As shown in FIG. 1, the reinforcing sheet wrapping machine rotatably supports a ring-shaped rotary fryer 11 through which a package W to be transferred at a predetermined speed by a transfer means (not shown) passes through a substantially central portion. A wrapping head 13 on which a reinforcing sheet roll 12 obtained by winding a reinforcing sheet C having a predetermined width in a roll shape is rotatably supported is attached to the rotary fryer 11. Then, by rotating the rotary fryer 11 with an appropriate driving means, for example, a rotation motor 14, the reinforcing sheet C is fed out from the reinforcing sheet roll 12 supported by the packaging head 13 and wound around the outer periphery of the package W. It has become.

  In this embodiment, as shown in FIGS. 2 to 4, when the reinforcing sheet C fed out from the reinforcing sheet roll 12 of the packaging head 13 is wound around the article W, the winding start end C ′ of the reinforcing sheet C is wound. Is wrapped around the article W to be wrapped, and a chuck member 21 that holds the winding start end C ′ of the reinforcing sheet C in close contact with the article W to be packaged is provided.

  The chuck member 21 chucks the winding start end portion C ′ of the reinforcing sheet C fed out from the reinforcing sheet roll 12, and includes a fixed chuck body 23 fixed to the chuck support body 22, and a lower portion of the fixed chuck body 23. The movable chuck body 25 is provided on the side so as to be rotatable via a shaft 24.

  The chuck support 22 is provided with chuck opening / closing means, for example, a chuck opening / closing cylinder 26, and a piston rod 26 a of the chuck opening / closing cylinder 26 is connected to the movable chuck body 25 of the chuck member 21.

  When the chuck opening / closing cylinder 26 is extended, the movable chuck body 25 of the chuck member 21 rotates in the closing direction (counterclockwise in FIG. 2) about the shaft 24, and the opening / closing cylinder 26 is shortened. The movable chuck body 25 of the chuck member 21 rotates in the opening direction (clockwise in FIG. 2) with the shaft 24 as a fulcrum. That is, the chuck member 21 opens and closes in the vertical direction as the chuck opening / closing cylinder 26 expands and contracts.

  The chuck support 22 is provided on a front / rear plate 28 that can be moved back and forth in the horizontal direction (left and right direction in FIG. 2) by a chuck back and forth moving means 27, for example, a chuck front and rear cylinder 27. A pair of guide rods 29 and 29 are slidably supported in the axial direction of the piston rod 27 a on the upper and lower portions of the chuck front and rear cylinder 27, and the piston rod 27 a and the pair of guide rods 29 and 29 of the chuck front and rear cylinder 27 are supported. Front and rear plates 28 are connected and fixed to the respective tips.

  When the chuck front / rear cylinder 27 is expanded and contracted, the front / rear plate 28 moves in the forward direction (right side in FIG. 2), and when the chuck front / rear cylinder 27 is shortened, the front / rear plate 28 moves backward (in FIG. 2). To the left). At this time, the front and rear plates 28 are prevented from rotating by the pair of guide lots 29 and 29. That is, the front / rear plate 28 moves back and forth in the horizontal direction as the chuck front / rear cylinder 27 expands and contracts, and the chuck support 22 moves back and forth in the horizontal direction to move the chuck member 21 back and forth in the horizontal direction. It has become.

  The chuck front / rear cylinder 27 is provided via an L-shaped member 32 on a lift plate 31 that can be moved up and down in a vertical direction (vertical direction in FIG. 2) by a chuck vertical movement means, for example, a chuck vertical cylinder 30. A pair of guide rods 33, 33 are supported on both sides of the chuck vertical cylinder 30 so as to be slidable in the axial direction of the piston rod 30 a, and the piston rod 30 a of the chuck vertical cylinder 30 and the pair of guide rods 33, 33 respectively. A lift plate 31 is connected and fixed to the tip of the plate. The horizontal portion of the L-shaped member 32 is fixed to the elevating plate 31, and the chuck front / rear cylinder 27 is fixed to the vertical portion of the L-shaped member 32.

  When the chuck vertical cylinder 30 is expanded and contracted, the lift plate 31 rises upward, and when the chuck vertical cylinder 30 is shortened, the lift plate 31 descends downward. At this time, the lifting plate 31 is prevented from rotating by the guide rods 33 and 33. That is, the elevating plate 31 moves up and down in the vertical direction along with the expansion and contraction operation of the chuck up and down cylinder 30, and the L-shaped member 32, the chuck front and rear cylinder 27, the front and rear plate 28, and the chuck support 22 move up and down accordingly. By doing so, the chuck member 21 is moved up and down in the vertical direction.

  The chuck vertical cylinder 30 is provided on a support frame 35 erected from a base 34 via a mounting plate 36. The support frame 35 includes a lower horizontal frame member 35a fixed on the base 34, an upper horizontal frame member 35b disposed above the lower horizontal frame member 35a at a predetermined interval, and a lower horizontal frame. A left vertical frame member 35c that connects one end of the material 35a and the upper horizontal frame member 35b, a right vertical frame member 35d that connects the lower horizontal frame member 35a and the upper horizontal frame member 35b, and a lower horizontal frame It consists of an inclined frame 35e that connects the other end of the material 35a and the middle of the right vertical frame material 35d.

  A mounting plate 36 is attached between the left vertical frame member 35c and the right vertical frame member 35d of the support frame 35. By attaching the chuck vertical cylinder 30 to the mounting plate 36, the chuck vertical cylinder 30 is attached to the support frame 35. Is provided.

  A rotary actuator, for example, a hydraulic motor 37 is provided at a predetermined position of the upper horizontal frame member 35 b of the support frame 35. The hydraulic motor 37 can rotate forward and backward at an arbitrary angle, and has an output shaft 37a projecting upward. A mounting member 38 is provided on the output shaft 37a of the hydraulic motor 37, and a pressing member, for example, a pressing rod 39 is provided in the mounting member 38 in the horizontal direction.

  The pressing bar 39 is used to refract the winding start end C ′ of the reinforcing sheet C so that the winding start end C ′ of the reinforcing sheet C fed out from the reinforcing sheet roll 12 can be chucked by the chuck member 21. When the hydraulic motor 37 is rotated forward and backward at an arbitrary angle, the hydraulic motor 37 is rotated forward and backward at an arbitrary angle, for example, 95 ° in the horizontal direction. It is like that.

  At the lower end position of the left vertical frame member 35c of the support frame 35, an air blowing means for blowing air, for example, an air blow 40 is provided. The air blow 40 is directed and attached so as to blow air upward. The air blow 40 blows air to the winding start end C ′ of the reinforcing sheet C when the winding start end C ′ of the reinforcing sheet C is closely held on the package W by the chuck member 21. The portion of the reinforcing sheet C at the winding start end C ′ that is not chucked by the chuck member 21 is brought into close contact with the article W to be packaged by wind pressure.

  In the figure, reference numeral 41 denotes a clamp member, and this clamp member 41 is one of the reinforcing sheets C so that the reinforcing sheet C can be easily cut when the reinforcing sheet C is wound around the package W and the reinforcing sheet C is cut. The side is clamped. The clamp member 41 connects a pair of clamp bodies 42, 42 arranged opposite to each other in the horizontal direction to an opening / closing cylinder (not shown), and abuts and separates the pair of clamp bodies 42, 42 as the opening / closing cylinder expands and contracts. It opens and closes by doing.

  The clamp member 41 is attached to a movable body (not shown) that is movable in the width direction of the reinforcing sheet C that is fed from the reinforcing sheet roll 12, and the movable body is used when clamping one side of the reinforcing sheet C. Thus, the reinforcing sheet C is advanced to a position where the reinforcing sheet C can be clamped, and when the reinforcing sheet C is wound around the package W, the moving body is moved back to a retracted position that does not prevent the reinforcing sheet C from being wound. .

  In the figure, reference numeral 43 denotes a guide member. The guide member 43 presses the winding start end C ′ of the reinforcing sheet C with the pressing rod 39 so that the chuck member 21 chucks the winding start end C ′ of the reinforcing sheet C. When refracting, the winding start end portion C ′ of the reinforcing sheet C is directed to the rear surface of the reinforcing sheet C so as to be easily refracted.

  The guide member 43 is formed of a rod having a length over substantially the entire width direction of the reinforcing sheet C, and is connected to a guide vertical movement means, for example, a piston rod 44 a of the guide vertical cylinder 44. When the guide upper / lower cylinder 44 is extended, the guide member 43 is lifted and directed to the rear surface of the winding start end C ′ of the reinforcing sheet C to receive and support the winding start end C ′ of the reinforcing sheet C. When the guide up / down cylinder 44 is shortened, the guide up / down cylinder 44 is lowered and separated from the reinforcing sheet C. The guide member 43 is attached to a movable body (not shown) that is movable in the width direction of the reinforcing sheet C that is fed out from the reinforcing sheet roll 12, and when the reinforcing sheet C is wound around the article W to be packaged. Is moved to a position where the winding of the reinforcing sheet C is not hindered by the moving body.

  Next, the operation of the packaging material winding start end part winding device configured as described above (wrapping material winding start end part winding method) will be described. First, as shown in FIG. 5, in a state where one side portion of the winding start end portion C ′ of the reinforcing sheet C fed out from the reinforcing sheet roll 12 of the packaging head 13 is clamped by the clamp member 41, the article W When the reinforcing sheet C is wound around, the guide member 43 is raised by the guide up / down cylinder 44 so as to be directed to the rear surface of the winding start end C ′ of the reinforcing sheet C, as shown in FIG. At this time, the guide member 43 is disposed so as to reach the rear surface of the winding start end portion C ′ closer to the front end side than the position where the clamp member 41 of the reinforcing sheet C is clamped.

  Next, the pressing rod 39 is rotated in the forward direction (counterclockwise in FIG. 2) by the hydraulic motor 37 to press the pressing rod 39 against the front surface of the winding start end portion C ′ of the reinforcing sheet C. At this time, the pressing bar 39 presses the front surface of the winding start end portion C ′ closer to the front end side than the position where the guide member 43 of the reinforcing sheet C is addressed. As shown in FIG. 7, when the pressing rod 39 is rotated to a predetermined angle, the winding start end portion C ′ of the reinforcing sheet C is refracted to the substantially horizontal position with the guide member 43 as a fulcrum.

  Next, as shown in FIG. 8, the chuck member 21 with the movable chuck body 25 opened is advanced by the chuck front / rear cylinder 27 to reinforce the space between the fixed chuck body 23 and the movable chuck body 25 of the chuck member 21. The sheet C is fitted into the other side of the refracted winding start end C ′. In this state, the movable chuck body 25 of the chuck member 21 is closed by the chuck opening / closing cylinder 27, and the other side portion of the winding start end portion C 'refracted of the reinforcing sheet C is chucked by the chuck member 21.

  Next, the pressing rod 39 is rotated in the reverse direction (clockwise in FIG. 2) by the hydraulic motor 37 to return to the original position, and the clamp member 41 is opened to start the winding start end C of the reinforcing sheet C. After releasing the clamp on one side of ', the clamp member 41 is moved to a position not hindering the winding of the reinforcing sheet C, and the guide member 43 is further lowered to wind the winding start end C' of the reinforcing sheet C '. After being separated from the guide member 43, the guide member 43 is moved to a position that does not hinder the winding of the reinforcing sheet C. As a result, as shown in FIG. 9, the reinforcing sheet C fed from the reinforcing sheet roll 12 is only chucked by the chuck member 21 at the other side of the winding start end C ′.

  Next, as shown in FIG. 10, the chuck member 21 is lifted by the chuck vertical cylinder 30 in a state where the winding start end portion C ′ of the reinforcing sheet C is chucked. Lift the winding start end C ′. Thereby, the winding start end portion C ′ of the reinforcing sheet C fed out from the reinforcing sheet roll 12 is held in close contact with the article W to be packaged.

  Thereafter, air is blown from the air blow 40, and the blown air is blown to the winding start end portion C ′ of the reinforcing sheet C, and the wind pressure chucks the chuck member 21 at the winding start end portion C ′ of the reinforcing sheet C. The part which is not made is also closely_contact | adhered to the to-be-packaged object W.

  When the winding member end C ′ of the auxiliary sheet C is held in close contact with the article to be packaged W by the chuck member 21, the packaging head 13 is rotated around the article to be packaged W, and from the reinforcing sheet roll 12 of the packaging head 13. The reinforcing sheet C is wound around the package W while being fed out. When the reinforcing sheet C is wound around the packaged article W for a predetermined circumference, for example, two or more turns, the movable chuck body 25 of the chuck member 21 is opened by the chuck opening / closing cylinder 26 and the winding start end C ′ of the reinforcing sheet C is opened. While releasing the chuck, the chuck member 21 is retracted by the chuck front / rear cylinder 27, and when the chuck member 21 is retracted to the original position, the chuck member 21 is lowered by the chuck vertical cylinder 30 and returned to the original position. The winding operation of the winding start end portion C ′ of the reinforcing sheet C is completed.

  In the present embodiment, when the reinforcing sheet C drawn from the reinforcing sheet roll 12 of the packaging head 13 is wound around the article W to be wrapped, the winding start end portion C ′ of the reinforcing sheet C is wrapped by the chuck member 21. Since the reinforcing sheet C is wound around the package W once because it is held in close contact with the package W, the winding start end C ′ of the reinforcing sheet C is wrapped around the package W and the reinforcing sheet wound around it. The winding start end C ′ of the reinforcing sheet C can be reliably wound around the article W to be packaged. Even when the reinforcing sheet C is hard and slippery plastic pearl, the winding start end C ′ of the reinforcing sheet C is held in close contact with the package W by the chuck member 21, and therefore the winding start end C ′ of the reinforcing sheet C is retained. Can be reliably wound around the article W to be packaged. Accordingly, the reinforcing sheet C can be reliably and neatly wound around the packaged article W without being wound in a state where the winding start end portion C ′ of the reinforcing sheet C is folded.

  In the present embodiment, the air is blown by the air blow 40 with the air blow 40 in a state where the other side portion of the winding start end portion C ′ of the reinforcing sheet C is held in close contact with the package W by the chuck member 21. Since the wind is applied to the start end portion C ′, the wind pressure of the wind start end portion C ′ of the reinforcing sheet C can be brought into close contact with the article W to be packed by the chuck member 21. As a result, the winding start end portion C ′ of the reinforcing sheet C is prevented from being bent from the middle, and the winding start end portion C ′ of the reinforcing sheet C is surely wound around the package W.

  In the embodiment described above, a packaged object such as a pipe is exemplified as the packaged object. However, the present invention is not limited to the packaged object, and may be applied to a non-long packaged object such as a drum. Can do.

  Moreover, although the plastic pearl is illustrated as a packaging material in embodiment mentioned above, this invention is not limited to a plastic pearl, For example, packaging materials, such as a cross sheet, a stretch film, a paper sheet, can also be applied.

It is a perspective view which shows the packaging mechanism of the packaging machine which concerns on this invention. It is a side view which shows the principal part of the packaging machine which concerns on this invention. It is a front view of the principal part of the said packaging machine. It is a top view of the principal part of the said packaging machine. It is drawing explaining the winding start operation | movement in the said packaging machine, (a) is a schematic perspective view which shows the state which clamped the winding start end part with the clamp member before winding start operation | movement, (b) is the schematic front view. It is drawing explaining the winding start operation | movement in the said packaging machine, (a) is a schematic perspective view which shows the state which addressed the guide member, (b) is the schematic front view. It is drawing explaining the winding start operation | movement in the said packaging machine, (a) is a schematic perspective view which shows the state which bent the winding start end part with the press rod body, (b) is the schematic front view. It is drawing explaining the winding start operation | movement in the said packaging machine, (a) is a schematic perspective view which shows the state which chucked the winding start end part with the chuck member, (b) is the schematic front view. It is drawing explaining the winding start operation | movement in the said packaging machine, (a) is a schematic perspective view which shows the state which the clamp member, the guide member, and the press rod body returned to the original position, (b) is the schematic front view. . It is drawing explaining the winding start operation | movement in the said packaging machine, and is a schematic front view which shows the state which hold | maintained the winding start end part closely to the to-be-packaged object with the chuck member. It is a schematic plan view which shows the packaging apparatus of a long thing. It is drawing which shows the packing order of the to-be-packaged object by the long packaging apparatus of FIG. It is drawing which shows the terminal process of the packaging material in the packaging machine of the packaging apparatus of the elongate thing of FIG.

Explanation of symbols

  W: an object to be packaged, C: a reinforcing sheet (packaging material), C ′: a winding start end of the reinforcing sheet (winding start end of the packaging material), 12: a reinforcing sheet roll, 13 ... a packaging head, 21 ... a chuck Members, 22 ... chuck support, 23 ... fixed chuck body, 24 ... shaft, 25 ... movable chuck body, 26 ... chuck opening / closing cylinder, 27 ... chuck front / rear cylinder, 30 ... chuck up / down cylinder, 35 ... support frame, 37 ... Hydraulic motor, 39 ... Pressing rod (pressing member), 40 ... Air blow, 41 ... Clamp member, 43 ... Guide member

Claims (7)

In a packaging method in which a packaging material roll wound around in a roll is wound around a packaged article, and the packaging material is wound around the packaged article while being fed out of the packaging material roll.
When starting to wind the packaging material drawn from the packaging material roll around the package, the winding start end of the packaging material is clamped from one side by a clamp member at a position away from the package. The guide member is applied to one surface of the packaging material closer to the tip side than the position where the clamp member is clamped, and the other surface of the packaging material closer to the tip side is pressed from the position where the guide member is addressed The winding start end of the packaging material is refracted using the guide member as a fulcrum by pressing with the member, and the winding start end of the refracted packaging material is chucked by the chuck member, and the clamp of the clamp member is released in this state A packaging method characterized in that the chuck member is moved later so that the winding start end of the packaging material is closely held on the package, and then the packaging material roll is circulated around the package. 2. The packaging method according to claim 1, wherein air is blown to a winding start end portion of the packaging material tightly held on the package by the chuck member. A packaging head is provided that rotatably supports a packaging roll in which the packaging material is wound in a roll shape, and the packaging head is wrapped around the article to be packaged to wrap the packaging head from the packaging roll of the packaging head. In a wrapping machine that wraps around the package while unwinding
A clamp member that clamps the winding start end of the packaging material from one side at a predetermined distance from the packaging material when starting to wind the packaging material fed from the packaging material roll around the packaging material, and the clamp A guide member that is directed to one surface of the packaging material closer to the distal end side than the position where the member is clamped, and the other surface of the packaging material closer to the distal end side than the position to which the guide member is addressed A pressing member that refracts the winding start end of the packaging material with the guide member as a fulcrum, chucks the winding start end of the refracted packaging material, and tightly contacts the winding start end of the wrapped packaging material to the package. A packaging machine comprising a chuck member to be held. The guide member is a rod-shaped member having a length over substantially the entire width direction of the packaging material, and the winding start end portion of the packaging material in a posture parallel to the width direction of the winding start end portion of the packaging material clamped by the clamp member The packaging machine according to claim 3, wherein the packaging machine moves in contact with and separates from the one surface. The pressing member is composed of a rod body that is supported so as to be rotatable about an axis orthogonal to the axis of the guide member, and is pressed against and separated from the other surface of the winding start end of the packaging material clamped by the clamping member. The packaging machine according to claim 3 or 4, wherein the packaging machine moves. The packaging machine according to any one of claims 3 to 5, wherein the chuck member includes means for moving back and forth and up and down. The packaging machine according to any one of claims 3 to 6, further comprising air blowing means for blowing air to a winding start end portion of the packaging material tightly held on the package by the chuck member.

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