JP4530772B2 - Cylindrical film folding unit - Google Patents

Description

  The present invention relates to a tubular film folding unit that folds a long tubular film folded in the form of a sheet in the middle of its delivery.

  For example, in a label insertion device that inserts a cylindrical label formed of a shrink film into a body portion of a bottle container, a long label-formed substrate folded into a sheet is fed from a substrate roll. By sequentially cutting, a cylindrical label folded into a sheet is formed, and this is sequentially supplied. The label insertion device inserts the supplied cylindrical label into the bottle container. In order to make it easier to open the cylindrical label folded in the form of a sheet, a folding unit is provided in the delivery path of the long label forming substrate, and the label folded in the sheet form by this folding unit By folding the forming substrate, the folding position is changed.

  As shown in FIGS. 8A and 8B, such a folding unit includes a folding guide 61 that is supported in a state in which a long label-forming base material M is inserted, and the folding guide. 61, the feeding portion 62 for feeding the label forming base material M before folding into the folding guide 61 installed on the upstream side of 61, and the label forming base after folding installed on the downstream side of the folding guide 61 A feed section 63 that feeds the material M from the folding guide 61, and the folding guide 61 includes an upstream guide 61a that opens the label-forming substrate M that is fed in a folded state. It is comprised from the downstream guide 61b which folds the label formation base material M opened by this upstream guide 61a.

  The upstream guide 61a and the downstream guide 61b constituting the folding guide 61 are connected to each other in a state of being fixed at a predetermined folding angle set in advance. Accordingly, the feeding angle of the tubular film M to the folding guide 61 in the feeding section 62 and the feeding angle of the cylindrical film M from the folding guide 61 in the feeding section 63 are fixedly set in advance. Has been.

No. 7-51450

  By the way, as described above, when the label forming substrate is folded in order to make it easier to open the cylindrical label in a folded state, the folding angle of the label forming substrate by the folding unit is 90 degrees. Generally, for example, when inserting a cylindrical label into a long-angle bottle whose body has a substantially rectangular cross-sectional shape, the periphery of the cylindrical label inserted into the long-angle bottle is used. In order to prevent the displacement of the direction, the fold formed on the cylindrical label needs to coincide with the corner portion of the long-angle bottle. In such a case, the label forming substrate is folded by the folding unit. The angle must be set to an angle other than 90 degrees.

  Also, if the folding angle of the label forming substrate by the folding unit is set to 90 degrees so that the cylindrical label can be easily opened, a new crease formed when the label forming substrate is folded is In the case where it coincides with the center seal portion of the label, the folding angle of the label forming substrate may be set to an angle other than 90 degrees.

  However, as described above, since the folding angle of the label forming substrate is fixed in the conventional folding unit, when changing the folding angle of the label forming substrate, the entire folding unit must be replaced. Therefore, there is a problem that it takes time to change the mold accompanying the change of the folding angle of the label forming substrate.

  Then, the subject of this invention is providing the folding unit of the cylindrical film which can perform the mold change accompanying the change of the folding angle of the cylindrical film folded in the sheet form easily.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a folding guide for folding a tubular film folded in a sheet shape, and the folding guide installed upstream of the folding guide. A cylindrical shape provided with a feeding section that feeds the tubular film into the folding guide, and a feeding section that is installed on the downstream side of the folding guide and feeds the tubular film after folding from the folding guide. In the film folding unit, the folding guide is configured to fold the tubular film opened by the upstream guide and the upstream guide that opens the tubular film that is fed in a sheet shape. A downstream guide to be changed, and the upstream guide and the downstream guide are connected so that the folding angle of the cylindrical film can be changed. It is intended to provide a Tsu door.

  As described above, in the tubular film folding unit according to the first aspect of the present invention, the upstream guide and the downstream guide constituting the folding guide can change the folding angle of the tubular film. Because it is connected, when changing the folding angle of the tubular film by the folding unit, it is only necessary to change the relative angle between the upstream guide and the downstream guide that are connected to each other. Well, since it is not necessary to replace the folding guide itself, it is possible to minimize the mold changing operation accompanying the change of the folding angle of the tubular film.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 shows a label insertion for inserting a cylindrical label L formed of a shrink film into a barrel of a PET bottle (hereinafter referred to as a long-angle bottle) B having a generally horizontal section of the barrel. The apparatus 1 is shown. This label insertion device 1 is a bottle supply unit 2 composed of a belt conveyor 2a, a screw 2b and a star wheel 2c for sequentially supplying long-angle bottles B to a bottle supply position γ, and a base material feed unit 3a. A label L is formed while sequentially cutting the fed long label forming substrate M, and the label L is supplied to the first delivery position α. The label delivery unit 4 which receives the label L supplied to the position α and conveys it to the second delivery position β, and the long-angle bottle B supplied from the bottle supply unit 2 at the bottle supply position γ, and receives the bottle delivery position δ. And the label L transported by the label delivery unit 4 is received at the second delivery position β. A rotary-type label insertion unit 5 for inserting the label L into the long-angle bottle B while the toll B is conveyed from the bottle supply position γ to the bottle delivery position δ, and the label L inserted into the long-angle bottle B It comprises a bottle transport unit 6 comprising a star wheel 6a and a belt conveyor 6b for transporting a long-angle bottle B in which a label L is inserted and inserted into a heating unit (not shown) for heat shrinking, The sheet-shaped label-forming substrate M fed from the feeding section 3a changes its folding position by being folded during its supply in order to make it easier to open into a cylindrical shape when the label L is attached to the bottle B. A folding unit 7 is installed. In addition, the label forming base material M is obtained by continuously connecting cylindrical labels L attached to the long-angle bottles B.

  As shown in FIGS. 1 and 2, the label delivery unit 4 includes a plurality of take-up members 4a that rotate at a constant rotational speed so as to pass through the first delivery position α and the second delivery position β. The take-up member 4a sucks and holds the label L supplied to the first delivery position α in a folded state in a sheet shape, and transports it to the second delivery position β.

  As shown in FIG. 1 and FIG. 2, the label insertion unit 5 is a concentric circle centered on the rotation axis via a plurality of support arms 5a, 5b, 5c projecting radially from the rotation axis (not shown). A plurality of label insertion heads 10 mounted at regular intervals are provided, and each label insertion head 10 causes a cylindrical label L folded into a sheet shape received at the second label delivery position β. The opened label L is inserted into the body of the long-angle bottle B while the long-angle bottle B received at the bottle supply position γ is being conveyed to the bottle delivery position δ. .

  As shown in FIG. 2, the label insertion head 10 includes a bottle holding means 11 for holding the long-angle bottle B received at the bottle supply position γ in a state of being placed on the bottle holding table 11a, and a second label delivery. A label opener 12 having a pair of openable and closable suction gripping arms 12a that opens in a cylindrical shape and a cylindrical label L that is opened by the label opener 12 are received by the sheet L at the position β. Is formed into a predetermined opening shape including a mandrel 13a having four opening and closing ridges that shape the opening into a predetermined opening shape that can be easily inserted into the body of the long-angle bottle B. The label is inserted into the long-angle bottle B placed on the bottle holding base 11a by pushing down the label L that has been pressed by the carrier plate 14a. The label L in a state of being folded into a sheet received at the second label delivery position β is opened in a cylindrical shape by the label opener 12 and then opened by the opening shaping means 13 to a predetermined opening. While the long-angle bottle B received in the bottle supply position γ is transported to the bottle delivery position δ while being held on the bottle holding base 11a, the label L shaped into a predetermined opening shape is It is inserted into the body of the long-angle bottle B by the label insertion means 14.

  As shown in FIGS. 3A, 3 </ b> B, and 4, the folding unit 7 includes a folding guide 20 that folds the label-forming base material M folded in a sheet shape, and the folding guide 20. A feeding unit 30 that feeds the label-forming substrate M before folding into the folding guide 20 installed on the upstream side, and a label-forming substrate M after folding installed on the downstream side of the folding guide 20 Is composed of a sending part 40 that feeds out the folding guide 20 and a substantially flat L-shaped mounting base 50 to which the feeding part 30 and the sending part 40 are attached. And supported by the delivery unit 40.

  As shown in FIGS. 5 (a) to 5 (c), the folding guide 20 includes an upstream guide 20a that opens the label-forming base material M that is fed in a sheet shape, and the upstream guide 20a. The upstream guide 20a and the downstream guide 20b are formed in a columnar shape on the proximal end side and in a wedge shape on the distal end side. Folded label-forming base material attached to the main body portions 21a and 21b so as to protrude from the wedge-shaped tip portions of the main body portions 21a and 21b. The plate guides 23a and 23b, which are slightly narrower than M, and the plate guides 23a and 23b are mounted on both sides in the width direction on the distal end side of the main body portions 21a and 21b, respectively. The supported roller 24a is, and a 24b.

  The upstream guide 20a and the downstream guide 20b are connected to each other at the center of the circular end surface on the base end side in each of the main body portions 21a and 21b, as shown in FIGS. With the cylindrical connecting rods 25 fitted in the holes 22a and 22b, the respective main body portions 21a and 21b are screwed to the connecting rods 25 so that both the main body portions 21a and 21b are prevented from being mutually rotated. And by rotating both the body portions 21a and 21b relative to each other about the connecting rod 25, the crossing angle of the tip portions (plate guides 23a and 23b) of the upstream guide 20a and the downstream guide 20b, that is, The folding angle of the label forming substrate M can be set to an arbitrary angle.

  The downstream guide 20b that folds the label forming substrate M opened by the upstream guide 20a has a spring guide 26 that is bent inward and elastically deformable in the inner side in the width direction of the plate guide 23b. The spring guide 26 is used to support the main body 21b so that even if the width of the label-forming base material M, which is attached so as to protrude outwardly and is folded into a sheet shape, is slightly increased. The label forming substrate M folded by the plate guide 23b is spread outward in the width direction.

  As shown in FIGS. 3A, 3 </ b> B, and 4, the feeding portion 30 includes an upstream support plate 31 attached to the attachment base 50 so as to hang down from the attachment base 50, and the upstream side. The support plate 31 includes an upstream guide roller 32 and a pair of upstream support rollers 33a and 33b. The pair of upstream support rollers 33a and 33b is a label-forming base folded in a sheet shape. The plate guide 23a portion of the upstream guide 20a covered with the material M is sandwiched.

  Further, the pair of upstream support rollers 33a and 33b sandwiching the plate guide 23a portion of the upstream guide 20a is folded so that the supported roller 24a attached to the main body portion 21a of the upstream guide 20a abuts. The change guide 20 is placed, and the folding support guide 20 is vertically supported by the upstream support rollers 33a and 33b.

  As shown in FIG. 4, the mounting base 50 is formed with arc-shaped long holes 51 on concentric circles around the axial center of the folding guide 20, and the two passing through the long holes 51 are formed. The upstream support plate 31 is fixed to the mounting base 50 by screwing and tightening the bolt 52 to the upper end surface of the upstream support plate 31. Therefore, when the two bolts 52 are loosened, the upstream support plate 31 can be moved along the arc-shaped elongated hole 51, and the upstream guide roller 32 and the pair of pairs supported by the upstream support plate 31. The attachment angle of the upstream support rollers 33a and 33b can be set to an arbitrary angle.

  As shown in FIGS. 3A and 3B, the delivery unit 40 includes a downstream support plate 41 fixedly installed on one side of the mounting base 50 so as to rise from the mounting base 50, and the downstream support plate. 41 includes a pair of downstream support rollers 42a and 42b, a pair of nip rollers 43a and 43b, and a downstream guide roller 44, and the pair of downstream support rollers 42a and 42b are folded. The label forming base material M covered with the plate guide 23b and the spring guide 26 of the downstream side guide 20b is sandwiched, and the pair of nip rollers 43a and 43b are folded into a sheet shape that is sent out in a folded state. By sandwiching the base material M, the air existing in the folded portion of the label-forming base material M is removed from the downstream side. So as not to spill. When the air existing in the folded portion of the label forming base material M flows out to the downstream side, the label forming base material M comes into close contact with the folding guide 20 and smoothly feeds the label forming base material M. It is because it becomes impossible.

  Further, the supported roller 24b attached to the main body portion 21b of the downstream guide 20b comes into contact with the pair of downstream support rollers 42a and 42b sandwiching the plate guide 23b and the spring guide 26 of the downstream guide 20b. The folding guide 20 is supported on the downstream guide 20b side by the downstream support rollers 42a and 42b.

  When changing the folding angle of the label forming substrate M by the folding unit 7 configured as described above, first, the screw fixing the upstream guide 20a to the connecting rod 25 is loosened, and the downstream guide 20b is in a state where it can rotate at a fixed position, and the upstream side support plate 31 is made circular with the two bolts 52 fixing the upstream side support plate 31 of the feeding portion 30 fixed to the mounting base 50 being loosened. A pair of upstream supports supported by the upstream support plate 31 by moving the upstream support plate 31 along the arc-shaped long hole 51 by making it movable along the arc-shaped long hole 51. When the mounting angle of the rollers 33a and 33b and the upstream guide roller 32 is changed, the upstream guide 20a supported by the upstream support rollers 33a and 33b is associated with one of the delivery units 40. As shown in FIGS. 6 (a), 6 (b) and 7, the distal end of the downstream guide 20b (as shown in FIGS. 6 (a), 6 (b) and 7) is rotated relative to the downstream guide 20b supported by the downstream support rollers 42a, 42b. Upstream support plate until the crossing angle of the tip (plate guide 23a) of the upstream guide 20a with respect to the plate guide 23b), that is, the folding angle of the folding guide 20 reaches the predetermined folding angle to be changed. After moving 31, the downstream guide 20 b is screwed again to the connecting rod 25 and the two bolts 52 are tightened to fix the upstream support plate 31 to the mounting base 50 again.

  As described above, in the folding unit 7, when the folding angle of the label forming substrate M is changed, the folding angle of the folding guide 20 and the upstream support rollers 33 a and 33 b of the feeding unit 30 and the upstream side are changed. It is only necessary to change the mounting angle of the guide roller 32, and it is not necessary to replace the entire folding unit 7, so that the mold changing operation accompanying the change of the folding angle of the label forming substrate M can be minimized. .

  In addition, in embodiment mentioned above, although the structure which can adjust the attachment angle of the upstream support rollers 33a and 33b of the sending-in part 30 and the upstream guide roller 32 is employ | adopted, it is limited to this. It is not a thing, The structure which can adjust the attachment angle of the downstream support rollers 42a and 42b of the sending part 40, the downstream guide roller 44, etc. is adopted, or each roller of the sending part 30 and the sending part 40 It is also possible to adopt a configuration that can adjust the mounting angle.

  Moreover, although embodiment mentioned above demonstrated the folding unit 7 mounted in the label insertion apparatus 1 for inserting and inserting the cylindrical label L in the trunk | drum of the long angle bottle B, it is limited to this. Needless to say, the folding unit of the present invention is useful when folding various tubular films folded into a sheet.

  Further, in the above-described embodiment, the rotary type label insertion device 1 on which the folding unit of the present invention is mounted has been described. However, the present invention is not limited to this, and for example, JP-A-1-139321 and It goes without saying that the folding unit of the present invention can be mounted on a linear label insertion device as disclosed in Japanese Patent Publication No. 1-52172.

It is a schematic block diagram which shows the label insertion apparatus in which the folding unit of the cylindrical film concerning this invention was mounted. It is the schematic which shows the label insertion unit in a label insertion apparatus same as the above. (A) is a front view which shows a folding unit same as the above, (b) is a side view which shows a folding unit same as the above. It is a bottom view which shows a folding unit same as the above. (A)-(c) is a figure which shows the folding guide currently mounted in the folding unit same as the above. (A) is the front view which shows the state which changed the folding angle of the label formation base material in the same folding unit, (b) has changed the folding angle of the label formation base material in the above folding unit. FIG. It is a bottom view which shows the state which changed the folding angle of the label formation base material in the folding unit same as the above. (A) is a front view which shows the conventional folding unit mounted in the label insertion apparatus, (b) is a side view which shows a folding unit same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Label insertion apparatus 2 Bottle supply unit 3 Label supply unit 4 Label delivery unit 5 Label insertion unit 6 Bottle conveyance unit 7 Folding change unit 10 Label insertion head 11 Bottle holding means 12 Label opener 13 Opening shaping means 14 Label insertion insertion Means 20 Folding / changing guide 20a Upstream guide 20b Downstream guide 21a, 21b Body portion 22a, 22b Connecting hole 23a, 23b Plate guide 24a, 24b Supported roller 25 Connecting rod 26 Spring guide 30 Feeding portion 31 Upstream support plate 32 Upstream guide roller 33a, 33b Upstream support roller 40 Delivery section 41 Downstream support plate 42a, 42b Downstream support roller 43a, 43b Nip roller 44 Downstream guide roller 50 Mounting base 51 Long hole 52 Bolt Length angle bottle M label formation base material L Label

Claims (1)

A folding guide that folds the tubular film folded into a sheet;
A feeding section installed on the upstream side of the folding guide, for feeding the tubular film before folding into the folding guide;
In the folding unit of the tubular film, which is provided on the downstream side of the folding guide, and includes a feeding unit that sends out the folded tubular film from the folding guide,
The folding guide is
An upstream guide that opens the tubular film that is fed in a folded state into a sheet;
A downstream guide that folds the tubular film opened by the upstream guide,
The tubular film folding unit, wherein the upstream guide and the downstream guide are connected so that the folding angle of the tubular film can be changed.

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