JP4668012B2 - Long material packaging method and long material packaging machine - Google Patents

Description

  The present invention relates to a long object packaging method and a long object packaging machine used when packaging a long object 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. 7 has been developed.

  The long object wrapping apparatus includes an entrance conveyor 1 for conveying a long object W in which a predetermined number of pipes are previously bundled using a wire or the like, and the long object W is primarily packaged with a primary packaging material such as a stretch film. A primary packaging machine, for example, a stretch packaging machine 2, a secondary packaging machine, for example, a secondary packaging machine, for example, a secondary packaging material, for example, a secondary packaging material, such as a cross sheet packaging machine, and a secondary packaging. A tertiary packaging machine, for example, a reinforcing sheet packaging machine 4, for further tertiary packaging of a plurality of longitudinal parts of the packaged long article W with a tertiary packaging material, for example, a reinforcing sheet (for example, plastic pearl), and a longitudinal direction of the long article W A band binding machine 5 for binding the binding bands so that the reinforcing sheets tertiary-packed in a plurality of places cannot be unwound, and an outlet conveyor 6 for transporting the long object W conveyed by the inlet conveyor 1 back to the inlet conveyor 1 With That.

  The entrance conveyor 1 conveys the long object 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 long article W conveyed at a predetermined speed by the entrance conveyor 1 [see FIG. 8 (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 is configured such that a ring-shaped rotary fryer that allows a long object W to pass through a substantially central portion is rotatably supported, and a stretch film roll in which a stretch film having a certain width is wound around the rotary fryer A primary packaging head supported rotatably is attached. And by rotating a rotary fryer with a suitable drive means, for example, a motor, it winds around the outer periphery of the long thing W, paying out a stretch film from the stretch film roll supported by the head for primary packaging.

  The cross sheet wrapping machine 3 is for secondary wrapping by further wrapping the cross sheet B around the outer periphery of the long article W on which the stretch film A is primarily packaged by the stretch wrapping machine 2 [see FIG. 8 (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 in which a long object W can pass through a substantially central portion, and a cross sheet roll in which a cross sheet having a certain 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 drive means, for example, a motor, on the stretch film primarily packaged on the outer periphery of the long object 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 places (for example, 2 to 8 places) in the longitudinal direction of the long article W in which the cross sheet B is secondarily wrapped by the cross sheet packaging machine 3. It is a tertiary package [see FIG. 8 (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 a long object 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 driving 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 long object 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 long object W 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. Then, after placing the long object W on the table in a state orthogonal to the portal arch, the binding means wraps the binding band along the arch and winds it on the reinforcing sheet tertiary-wrapped on the long object W. At the same time, by tightening the binding band and joining and cutting the band ends, the reinforcing sheet tertiary-packaged on the long object W is bound by the binding band.

  Next, operation | movement of the packaging apparatus comprised as mentioned above is demonstrated. First, a long object W 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 long object 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 and the conveyance of the long object W is temporarily stopped. In this state, after the winding film end of the stretch film fed 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 long object W, the rotary fryer of the stretch wrapping machine 2 is rotated. The primary packaging head is made to circulate around the starting end of the long object W. Thus, the stretch film is wound around the outer periphery of the starting end portion of the long object W 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 long object W one or more times concentrically, the entrance conveyor 1 is driven, and the long object W is conveyed by the entrance conveyor 1 at a predetermined speed. When the primary packaging head is circulated around the long object W at a predetermined speed while transporting the long object W at a predetermined speed in this way, a stretch film is continuously spiraled around the outer periphery of the long object W at a predetermined lead pitch. Then it is wound.

  When the end of the long object W is conveyed to the stretch wrapping machine 2, the entrance conveyor 1 is stopped to stop the conveyance of the long object W, and the stretch film is attached to the end of the long object W. Wrap in a core shape. Then, when the stretch film is wound around the terminal end of the long object W one or more times concentrically, 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 end of the winding is stopped at the end of the long article W using the adhesiveness of the stretch film itself, and the primary packaging on the long article W is completed.

  On the other hand, when the starting end of the long object W is conveyed to the cross sheet packaging machine 3 during the primary packaging of the long object W described above, the entrance conveyor 1 is stopped here to convey the long object 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 close contact with the starting end of the long object W. The fryer is rotated so that the secondary packaging head circulates around the start end of the long object W. Thereby, the cross sheet is wound around the start end of the long object W in a concentric manner while being fed out from the cross sheet roll of the secondary packaging head.

  Then, when the cross sheet is wound around the starting end of the long object W one or more times in a concentric manner, the entrance conveyor 1 is driven, and the entrance conveyor 1 conveys the long object W in the longitudinal direction at a predetermined speed. . When the secondary packaging head is rotated at a predetermined speed while conveying the long object W at a predetermined speed in this way, the cross sheet is spirally formed on the outer periphery of the long object W at a predetermined lead pitch. Wrapped continuously.

  And if the terminal part of the long article W is conveyed until it reaches the cross sheet packaging machine 3, the entrance conveyor 1 is stopped to stop the transport of the long article W, and the cross sheet is attached to the terminal part of the long article W. Wrap in concentric form. Then, when the cross sheet is wound around the end of the long object 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 long object W with an adhesive tape or the like, and the secondary packaging on the long object W is completed.

  On the other hand, when a predetermined position in the longitudinal direction of the long object W (position for tertiary packaging) is conveyed to the reinforcing sheet packaging machine 4 during the secondary packaging to the long object W described above, the entrance conveyor 1 is moved here. Stop and stop the conveyance of the long object W. 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 predetermined position of the long object W, the rotary fryer of the reinforcing sheet packaging machine 4 To rotate the tertiary packaging head around a predetermined position of the long object W. Accordingly, the reinforcing sheet is wound around the predetermined position of the long object W while being fed out from the reinforcing sheet roll of the tertiary packaging head. Then, when the reinforcing sheet is wound around the predetermined position of the long object W in a predetermined concentric manner (for example, 2-3 laps), 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 winding end is stopped at a predetermined position of the long object 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 locations in the longitudinal direction of the long object W, the tertiary packaging on the long object W is completed.

  On the other hand, when the leading end of the long article W reaches the outlet conveyor 6 in the middle of the above-described tertiary packaging on the long article W, the outlet conveyor 6 is driven, and the long article W is conveyed by the outlet conveyor 6. . When the tertiary packaging on the long object W is completed, the tertiary packaged long article W is once transferred to the outlet conveyor 6, and then the outlet conveyor 6 is driven reversely so that the tertiary packaged long article W enters the inlet. It conveys so that it may send back to the conveyor 1 side. And if the position where the long packaging of the long article W reached the band binding machine 5, the exit conveyor 6 will be stopped here and conveyance of the long article 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 long object W, and the binding band is tightened and the band end is joined and cut to the long object W. Bundling the third-packed reinforcing sheet with a binding band. After that, if the above-mentioned operations are repeated a predetermined number of times (for example, 1 to 7 times) and the reinforcing sheets tertiary-packed at a plurality of packaging positions in the longitudinal direction of the long object W are bound with a binding band, the band to the long object W Bonding ends.

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

  By the way, the cross sheet packaging machine 3 rotates the secondary packaging head around the long object W conveyed at a predetermined speed at a predetermined speed, and the cross sheet from the cross sheet roll supported by the secondary packaging head. While feeding out B, the outer periphery of the long object W is continuously wound in a spiral shape at a predetermined lead pitch.

  However, the cross sheet roll is rotated at a predetermined position around the long object W conveyed at a predetermined speed, and the cross sheet B is fed out from the cross sheet roll and continuously spiraled around the outer periphery of the long object W. If the axis of the long object W conveyed at a predetermined speed is parallel to the axis of the cross sheet roll, the cross sheet B is pulled obliquely in the conveying direction of the long object W. B is twisted, and the rear side in the width direction is lifted from the outer periphery of the long object W to cause slack. The slack is wound as it is, and a loose wrinkle is generated in the cross sheet B. Not only did it become a bad package, but there was a problem that something could get caught on the loose bag and damage the cross sheet B.

  Under such circumstances, the present invention prevents the generation of wrinkles of the packaging material at the time of packaging, and does not cause defects such as poor appearance due to wrinkles or damage to the packaging material. The purpose is to provide a packaging machine.

  In order to achieve the above object, the present invention winds a packaging material roll wound around in a roll shape around a long object, thereby winding the packaging material from the packaging material roll while winding the packaging material around the long object. When wrapping the packaging material around the starting end of the long object in the packaging method of the long object, the long axis of the packaging material roll is not moved relatively to the packaging material roll. When wrapping the packaging material parallel to the axis of the scale and wrapping the packaging material around the middle of the long article, move the long article relative to the packaging roll in the axial direction of the elongated article. However, when wrapping the packaging material with the axis of the packaging material roll inclined obliquely with respect to the axis of the long product and wrapping the packaging material around the end of the long product, Thus, the packaging material was wound with the axis of the packaging material roll parallel to the axis of the long object without relative movement.

  According to the above method, the starting material and the terminal material of the long object wind the packaging material concentrically, and the middle part of the long material winds the packaging material spirally. When the packaging material is wound in a spiral shape around the middle part of the long object, the packaging material is twisted by winding the packaging material with the axis of the packaging material roll inclined obliquely with respect to the axis of the long object. It is possible to wind without generating slack, and to wrap the packaging material in the middle of the long object without generating slack.

  Further, the present invention provides a packaging head that rotatably supports a packaging roll in which the packaging material is wound in a roll shape, a head driving means for rotating the packaging head around a long object, and a long length And a moving means for moving the article relative to the packaging head in the axial direction of the long article, and the packaging head rolls around the long article by the head driving means, thereby wrapping the packaging head roll In a long packaging machine that continuously wraps around a long object while feeding out the packaging material, the packaging roll has an axis inclined obliquely to the axis of the long object on the packaging head. A tilting means for tilting the packaging material roll is provided.

  According to the above apparatus, the packaging head is rotated around the long object by the head driving means while moving the long object relative to the packaging head in the axial direction of the long object. While winding the packaging material from the packaging material roll, it is continuously wound in a spiral shape on a long object. At that time, the packaging material roll of the packaging head is tilted by the tilting means, and the axis of the packaging material roll is tilted with respect to the axis of the long object, so that the packaging material is not twisted and the packaging material is not slackened. The wrapping material can be wound around a long object without causing slack.

  Further, according to the present invention, when the packaging material is wound around the starting end of the long object, the axis of the packaging material roll of the packaging head is tilted by the tilting means without moving the long object relative to the packaging head. When wrapping the packaging material in the middle of the long object, the packaging head is moved relative to the long object in the axial direction. When the packaging material roll is tilted by the tilting means so that the axis of the packaging material roll is inclined obliquely with respect to the axis of the long object, Without moving the product relative to the packaging head, the inclination of the packaging material roll of the packaging head is returned by the tilting means, and the axis of the packaging material roll is arranged parallel to the axis of the long product.

  According to the above apparatus, the start and end portions of the long object wind the packaging material concentrically, and the middle portion of the long object winds the packaging material spirally. Then, when the packaging material is spirally wound around the middle part of the long object, the packaging material is arranged by tilting the axis of the packaging material roll of the packaging head so as to be inclined with respect to the axis of the long object. It is possible to wind without generating slack without twisting, and to wrap the packaging material without causing slack in the middle part of the long object.

  According to the present invention, the packaging head includes a fixed frame fixed to the head driving means, a swing frame attached to the fixed frame so as to be swingable, and a packaging material roll supported by the swing frame. And a tilting means for swinging the swing frame by a motor fixed to the fixed frame.

  According to the above apparatus, the packaging material roll is inclined such that the axis of the packaging material roll supported by the oscillation frame is inclined with respect to the axis of the long object by oscillating the oscillation frame by the tilting means. Can be made.

  According to the present invention, when the long material is moved relative to the packaging material roll in the axial direction of the long material and the packaging material is spirally wound around the long material, the axis of the packaging material roll is Therefore, the packaging material can be wound without causing slack without twisting, and the packaging material can be wound without causing slack wrinkles on a long object. Thereby, generation | occurrence | production of the wrinkle of the packaging material at the time of packaging is prevented, and malfunctions, such as the bad appearance by a wrinkle and the damage of a packaging material, are avoided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present embodiment shown in FIG. 1 to FIG. 6 is a length for wrapping a long object W by winding a packaging material, for example, a cross sheet B, around a long object W in which a predetermined number of pipes are previously bundled using a wire or the like. The present invention relates to a scale packaging machine.

  The long object packaging machine of the present embodiment is a ring in which a long object W conveyed at a predetermined speed in a substantially horizontal direction by a conveying means (not shown) passes through a substantially central portion and rotates at a predetermined speed. A rotary fryer 11 is provided.

  The rotary fryer 11 has an inner diameter that is sufficiently larger than the outer diameter of the long object W, and can be rotated by a support frame 14 that can be moved up and down on a portal frame 13 that is erected on the base 12. It is supported by. A plurality of, for example, four guide rollers 15, 15... Are rotatably disposed on the support frame body 14 such as circumferentially, and the outer periphery of the rotary fryer 11 is guided by these guide rollers 15, 15. Thus, the rotary fryer 11 is rotatably supported by the support frame 14. The guide rollers 15, 15... Are rotatably supported by pivot members 16, 16... Provided at the four corners of the support frame 14, so that the guide rollers 15, 15. ing. An annular groove (not shown) is formed on the outer circumference of each of the guide rollers 15, 15..., And the rotary fryer 11 is engaged with the outer circumference of the rotary fryer 11 by engaging the annular groove with the guide rollers 15, 15. To be guided to.

  The support frame 14 is slidably supported by guide rods 17 and 17 disposed in the vertical direction inside the vertical frames 13 a and 13 a of the portal frame 13, and the horizontal frame of the portal frame 13. It connects with the jack rod 18a of the screw jack 18 for raising / lowering arrange | positioned at 13b. Accordingly, when the elevating screw jack 18 is expanded and contracted, the support frame 14 moves up and down along the guide rods 17 and 17 in the vertical direction of the portal frame 13. When the support frame 14 is raised and lowered in the vertical direction of the portal frame 13, the rotary fryer 11 supported by the support frame 14 is raised and lowered integrally, and the height of the rotary fryer 11 can be adjusted. Thereby, even if the outer diameter dimension of the long object W is changed, the center of the rotary fryer 11 can be made to coincide with the outer diameter center of the long object W by adjusting the height of the rotary fryer 11.

  As shown in FIGS. 2 and 3, outer peripheral teeth 19 are integrally formed on the outer periphery of the rotary fryer 11, and the outer peripheral teeth 19 are gears attached to the output shaft of a gear box 20 a provided in the rotation motor 20. 21 is engaged. When the rotary motor 20 is driven, the rotary fryer 11 is rotated in one direction at a predetermined speed via the gear 21 and the outer peripheral teeth 19. The motor 20 for rotation is attached to the support frame 14, and a rotational speed is decelerated by the gabox 20a.

  The rotary fryer 11 is attached with a packaging head 22 for packaging a long object W that passes through the central portion thereof. The packaging head 22 includes a fixed frame 23, a swing frame 24, a roll holder 25, and a guide roller group 26.

  The fixed frame 23 is formed in a substantially L shape, and is fixed to the side surface of the rotary fryer 11 by fixing a fixed bracket 23a provided at the base end portion so as to protrude in the feeding direction of the long object W and cantilevered. The state is fixed. A tilting motor 27 having a gear box 27 a is attached to the tip of the fixed frame 23. The tilting motor 27 is for oscillating the oscillating frame 24 and is composed of a motor capable of forward and reverse rotation, and the rotation speed is reduced by the gearbox 27a.

  The swing frame 24 is formed in a substantially L shape, and a boss 24 a provided at the base end portion is fitted and fixed to the output shaft of the gear box 27 a of the tilting motor 27 attached to the distal end portion of the fixed frame 23. Thereby, it is attached to the tip of the fixed frame 23 so as to be swingable. The swing frame 24 swings in the range of, for example, 0 to 45 ° with respect to the fixed frame 23 by driving a tilting motor 27. The swing frame 24 can switch the swing direction by switching the rotation direction of the swing motor 27 between forward and reverse.

  At an intermediate portion of the swing frame 24, a roll holder 25 protrudes in the feed direction of the long object W and is supported in a cantilever state. In this roll holder 25, a packaging material, for example, a cross sheet roll 28 obtained by winding the cross sheet B into a roll shape is inserted and held. A support plate 29 having a substantially pentagonal shape is fixed to the tip of the swing frame 24. A guide roller group 26 composed of a plurality of, for example, three guide rollers, which are parallel to each other and rotatable, is long on the support plate 29. The object W protrudes in the feeding direction and is supported in a cantilever state. A cross sheet B fed from a cross sheet roll 28 is wound around the guide roller group 26. As the cross sheet B, 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 foam sheet made of PE (polyethylene) and a resin cloth made of PE are laminated is used.

  Next, the operation of the long packaging machine configured as described above (the long packaging method) will be described. First, the long object W is conveyed until the start end of the long object W passes through the rotary fryer 11 and reaches the packaging head 22, where the conveyance of the long object W is temporarily stopped. In this state, the cross sheet B is fed out from the cross sheet roll 28 held by the roll holder 25 of the packaging head 22, and the cross sheet B is wound around the guide roller group 26, and then the winding start end is a long object. After closely contacting the starting end portion of W, the rotating motor 20 is driven to rotate the rotating fryer 11, and the packaging head 22 attached to the rotating fryer 11 is rotated around the starting end portion of the long object W. Thereby, the cross sheet B is wound around the start end portion of the long object W while being fed from the cross sheet roll 28 held by the roll holder 25 of the packaging head 22. At this time, the axis L of the long object W and the axis L ′ of the cross sheet roll 28 of the packaging head 22 are parallel to each other, and the cross sheet B is wound concentrically around the starting end of the long object W.

  When the cross sheet B is wound around the starting end of the long object W one or more times in a concentric manner, the rotation of the rotary fryer 11 is stopped once by stopping the driving of the rotation motor 20. In this state, the tilting motor 27 of the packaging head 22 is driven to swing the swing frame 24 with respect to the fixed frame 23, and the cross sheet roll 28 is tilted obliquely with respect to the axis L of the long object W. Let In this case, the cross sheet roll 28 is inclined with respect to the axis L of the long object W with the axis L ′ being equidistant from the axis L of the long object W, and the axis L ′ is long. In some cases, the axis L of the long object W is inclined with respect to the axis L of the long object W so as to change the distance from the axis L of the object W. Here, the axis L ′ of the cross sheet roll 28 is changed to the axis L of the long object W. Inclined with respect to the axis L of the long object W so as to change the distance. The cross sheet roll 28 is inclined obliquely so that the front end side thereof is separated from the axis L of the long object W. When the axis L ′ of the cross sheet roll 28 of the packaging head 22 is inclined at a predetermined angle (for example, 45 °) with respect to the axis L of the long object W, the driving of the tilting motor 27 is stopped and the swing frame 24 is moved. Stop rocking. As a result, the cross sheet roll 28 of the packaging head 22 is disposed with its axis L ′ inclined obliquely at a predetermined angle (for example, 45 °) with respect to the axis L of the long object W.

  Next, in a state where the cross sheet roll 28 of the packaging head 22 is arranged with its axis L ′ inclined at a predetermined angle (for example, 45 °) with respect to the axis L of the long object W, the long object W is predetermined. The rotation motor 20 is driven to rotate the rotary fryer 11 at a predetermined speed, and the packaging head 22 is rotated around the long object W at a predetermined speed. At this time, as shown in FIG. 6, the cross sheet roll 28 of the packaging head 22 is around the long object W in a state where the front end side thereof is inclined so as to be separated from the axis L of the long object W. Go around. In this way, when the long sheet W is conveyed at a predetermined speed and the packaging head 22 is circulated around the long object W at a predetermined speed, the cross sheet B spirals around the long object W at a predetermined lead pitch. Wrapped continuously. At this time, since the cross sheet roll 28 of the packaging head 22 is arranged with its axis L ′ inclined at a predetermined angle with respect to the axis L of the long object W, the cross sheet B is loosened without being twisted. Without being able to wind around the long object W in a spiral shape.

  Then, when the long object W is conveyed until the terminal portion passes through the rotary fryer 11 and reaches the packaging head 22, the conveyance of the long object W is stopped and the driving of the rotation motor 20 is stopped and rotated. The rotation of the fryer 11 is temporarily stopped. In this state, the tilting motor 27 of the packaging head 22 is reversely rotated to swing the swing frame 24 in the reverse direction. When the axis L ′ of the cross sheet roll 28 is returned to a state parallel to the axis L of the long object W, the reverse rotation of the tilting motor 27 is stopped to stop the swing of the swing frame 24. As a result, the cross sheet roll 28 of the packaging head 22 is arranged with its axis L ′ parallel to the axis L of the long object W.

  Thereafter, the rotary motor 20 is driven to rotate the rotary fryer 11, the packaging head 22 is rotated around the long object W, and the cross sheet B is wound concentrically around the end of the long object W. wear. When the cross sheet B is wound around the end of the long object W one or more times in a concentric manner, the driving of the rotating motor 20 is stopped and the rotation of the rotary fryer 11 is stopped. If the excess cross sheet B fed out from the sheet roll 28 is cut and the end portion of the winding is fixed to the end portion of the long article W with an adhesive tape or the like, the packaging of the cross sheet B of the long article W is finished.

  The long-size packaging machine (long-size packaging method) of the present embodiment, when the cross sheet B as a packaging material is continuously wound in a spiral shape at a predetermined lead pitch around the outer circumference of the long-length object W, While the long object W is conveyed in the axial direction at a predetermined speed, the packaging head 22 is circulated around the long object W at a predetermined speed and the cross sheet B is fed out from the cross sheet roll 28 while being long. Even when the product W is wound around the outer periphery of the article W, the cross sheet roll 28 of the packaging head 22 is arranged so that its axis L ′ is inclined with respect to the axis L of the long article W. The long sheet W can be continuously wound in a spiral shape without being twisted without being twisted, and a problem that a loose wrinkle occurs in the cross sheet B is avoided. In addition, since the cross sheet roll 28 of the packaging head 22 is disposed with its axis L ′ inclined obliquely with respect to the axis L of the long object W, no loose wrinkles are generated in the cross sheet B. The long object W can be wound in a spiral shape with a large lead pitch, and the long object W can be packaged in a short time by the cross sheet B.

  In the above-described embodiment, a pipe is exemplified as the long object W. However, the present invention is not limited to the pipe, and can be applied to various long objects such as wood such as logs, iron bars, and the like.

  Moreover, although the cross sheet is illustrated as a packaging material in embodiment mentioned above, this invention is not limited to a cross sheet, For example, reinforcement sheets, such as a plastic pearl, a stretch film, a paper sheet, etc. are applied. be able to. In addition, the stretch wrapping machine that uses the stretch film as a packaging material is configured so that the axis of the stretch film roll of the packaging head is obliquely inclined with respect to the axis L of the long object W continuously from the start end to the end of the long object W. Inclined and wound stretch film around the package in a spiral. In this case, the axis of the stretch film roll of the packaging head remains inclined obliquely with respect to the axis L of the long object W until the stretch film is wound from the start end to the end of the long object W. The inclination angle of the roll axis with respect to the axis L of the long object W is set to be smaller than that of the cross sheet packaging machine.

  In the above-described embodiment, the long object W is conveyed at a predetermined speed in the axial direction. However, the present invention is not limited to this, and the long object W is not conveyed and the packaging head 22 is conveyed. You can also.

  In the above-described embodiment, the rotation of the rotation motor 20 is transmitted to the rotary fryer 11 via the gear transmission mechanism including the gear 21 and the outer peripheral teeth 19. However, the present invention is not limited to the gear transmission mechanism and various transmissions are possible. A mechanism such as a transmission mechanism such as a belt or a chain can also be applied.

  In the embodiment described above, the height of the rotary fryer 11 can be adjusted to match the center of the rotary fryer 11 and the center of the outer diameter of the long object W. However, the present invention is not limited to this. It can also comprise so that the elongate object W can be height-adjusted.

It is a front view which shows embodiment of the packaging machine of the long thing which concerns on this invention. It is a perspective view of the principal part in the said embodiment. It is a disassembled perspective view of the principal part in the said embodiment. It is drawing which shows the state which wraps a packaging material on the both ends of a long thing. It is drawing which shows the state which wraps a packaging material in the intermediate part of a long thing. It is drawing which looked at the cross sheet roll in the state of FIG. 5 from the front end surface. It is drawing which shows the packaging apparatus of a long thing, (a) is a top view, (b) is a side view. It is drawing which shows the packaging procedure of the long thing by the packaging apparatus of the long thing of FIG.

Explanation of symbols

  W ... Long object, B ... Cross sheet (wrapping material), 11 ... Rotating fryer, 14 ... Support frame, 15 ... Guide roller, 17 ... Guide rod, 18 ... Lifting screw jack, 19 ... Outer teeth, 20 ... Rotation motor, 21 ... gear, 22 ... packaging head, 23 ... fixed frame, 24 ... swing frame, 25 ... roll holder, 26 ... guide roller group, 27 ... tilting motor, 28 ... cross sheet roll (packaging material) Roll), L ... axis of long object, L '... axis of cross sheet roll

Claims (4)

In a packaging method for long objects, a packaging material roll wound around in a roll shape is wound around a long object so that the packaging material is wound around the long object while being fed out of the packaging material roll. ,
When wrapping the packaging material around the beginning of the long object, the packaging material roll should be placed with the axis of the packaging material roll parallel to the axis of the long object without moving the long object relative to the packaging material roll. When wrapping the wrapping material around the middle part of the long object, the axis of the wrapping roll is adjusted while moving the long object relative to the wrapping roll in the axial direction of the long object. When wrapping the packaging material at an angle with respect to the axis and wrapping the packaging material around the end of the long object, the axis of the packaging material roll does not move relative to the packaging material roll. A packaging method for a long object in which the packaging material is wound in parallel with the axis of the long object. A packaging head that rotatably supports a packaging material roll in which the packaging material is wound in a roll shape, a head driving means for rotating the packaging head around a long object, and the long object as a packaging head And a moving means for relatively moving in the axial direction of the long object, while the packaging head is rotated around the long object by the head driving means, while the packaging material is fed out from the packaging material roll of the packaging head In a long packaging machine designed to continuously wrap around a long object,
The long packaging machine is characterized in that the packaging head is provided with tilting means for inclining the packaging material roll so that the axis of the packaging material roll is inclined with respect to the axis of the long product. When wrapping the packaging material around the starting end of the long object, the axis of the packaging material roll of the packaging head is moved to the axis of the long object by tilting means without moving the long object relative to the packaging head. When wrapping the packaging material around the middle part of the long object, the packaging material roll of the packaging head is tilted while the long object and the packaging head are relatively moved in the axial direction of the long object. When wrapping the packaging material around the end of the long object, place the long object on the packaging head. 3. The length according to claim 2, wherein the wrapping roll of the wrapping head is tilted back by the tilting means so that the axis of the wrapping roll is arranged parallel to the axis of the long object without relative movement. Scale packaging machine. The packaging head rotatably supports a fixed frame fixed to the head driving means, a swing frame attached to the fixed frame so as to be swingable, and a packaging material roll supported by the swing frame. A roll holder and a tilting means for swinging the swing frame by a motor fixed to the fixed frame;
4. The wrapping roll is tilted by the tilting means so that the axis of the wrapping roll supported by the oscillating frame is inclined with respect to the axis of the long object. The long packaging machine described.

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