JP2012017111A - Labeling machine with perforation forming device, and perforation forming method to label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To optionally control perforation forming intervals, while suppressing a label cost and machine cost.SOLUTION: A labeling machine for circular labeling has a perforation forming device arranged closely to a transfer drum. The perforation forming device includes: a rotary shaft arranged in parallel to a drum rotary shaft; one or more blades, which are arranged along an axial direction of the rotary shaft, and which are integrally rotated with the rotary shaft; and a rotation driver of the blades for controlling the rotation of the blades in conformity with the passing timing of the label.

Description

The present invention relates to a labeling machine including a perforation forming device for forming a perforation on a label immediately before application, and a method for forming a perforation on a label.

In order to separate containers such as PET bottles and cylindrical labels, it is widely known to provide perforations in the longitudinal direction of the cylindrical labels (Patent Document 1).
In order to form the perforation for cutting on the cylindrical label, for example, as described in Patent Document 2, while forming the perforation continuous along the longitudinal direction of the film, the both ends of the film sheet are then formed. It is known to produce continuous cylindrical labels with perforations by bonding and pasting.
Patent Document 3 discloses a disk-shaped rotary blade for forming perforations along the longitudinal direction of a film.

  Since the continuous body of the cylindrical label cannot be used as it is, it is manufactured by winding a tape-like material folded flat as a roll body. This roll body is mounted on a table of a labeling machine, and after the tape-like material drawn from the roll body is cut into a single length of the cylindrical label, the flat cylindrical label is spread in a cylindrical shape and placed in a container. Wearing.

Japanese Patent Laid-Open No. 10-316143 (FIG. 1) Japanese Unexamined Patent Publication No. 2007-76173 (FIGS. 4 and 5) JP 2009-274170 A (paragraph 0009, FIG. 1)

The labeling technique having the perforations described above has the following problems.
(1) The roll body of the perforated cylindrical label is not only higher in label cost than a normal single tape roll label, but also has a mechanism for expanding a flat cylindrical label into a cylindrical shape, and a cylindrical shape. Since it is necessary to equip the container with the label, the machine cost is high.
(2) A labeling machine for so-called all-around winding labels is known in which a single-tape roll label is used to superimpose and apply a cylindrical label on the outer peripheral surface of a container.
However, in the conventional labeling machine for all-round labels, not only can the perforation be formed in the direction perpendicular to the label transport direction during the label transport process, but the perforation formation position can be changed with respect to the label. Of course, when a plurality of perforations are provided, the interval between the perforations cannot be arbitrarily changed.

The present invention has been made in view of the above points, and an object thereof is to provide a labeling machine having at least the following perforation forming apparatus and a method for forming perforations on a label.
(1) To reduce label costs and machine costs.
(2) The perforation formation interval can be arbitrarily adjusted.

The first invention of the present application is a label supply means, a container transfer means for transferring a container through a label attaching position, and a rotation direction in the position direction around a drum rotation axis, and a plurality of suction holes are formed on the outer peripheral surface. In a labeling machine comprising a negative pressure suction type transport drum having an adsorption part, a perforation forming device is disposed close to the transport drum, and the perforation forming device is disposed in parallel with the drum rotation axis. The rotation axis is arranged along the axial direction of the rotation axis, and one or a plurality of plate blades that rotate integrally with the rotation shaft, and the rotation of the plate blades is controlled in accordance with the label passing timing. A rotation driving means for the plate blade, the plate blade forming a plurality of forming teeth on the front surface thereof, and a direction perpendicular to the label conveyance direction between the rotating plate blade and the suction portion of the conveyance drum Perforated on the label toward Characterized in that it.
According to a second invention of the present application, in the first invention, the perforation forming device further includes a rotating body fixed to a rotating shaft, and a holder removably assembled to the rotating body, and the holder includes one or more of the rotating body. A board blade is attached.
A third invention of the present application is characterized in that, in the first or second invention, the label is an all-around wound label having a total length capable of forming a cylindrical label on the outer peripheral surface of the container.

A fourth invention of the present application is a method for forming a perforation on a label in a direction orthogonal to the label conveyance direction on a label that is attracted to and transported by an adsorption portion on the outer peripheral surface of the conveyance drum. A plate blade that is parallel to the drum rotation axis of the transport drum and rotates integrally with the rotation shaft is disposed close to the plate blade, and the plate blade has a plurality of formed teeth on its front surface. The plate blade is rotated in accordance with the passage timing to form a perforation on the label between the suction portion of the transport drum.
According to a fifth invention of the present application, in the fourth invention, a plurality of plate blades that rotate integrally with the rotary shaft are arranged at intervals along the rotation direction of the plate blades, so as to match the passage of the label. And rotating the plurality of plate blades.
The sixth invention of the present application is the fourth invention, comprising a single plate blade that rotates integrally with the rotating shaft, wherein the single plate blade is formed with a number of perforations according to the passage of a label. It is characterized by rotating the same number.

The present invention has one of the following effects.
(1) A perforation can be formed on the label in a direction perpendicular to the label conveyance direction between the rotating plate blade and the conveyance drum by the perforation forming device arranged close to the conveyance drum.
(2) A conventional labeling machine is equipped with a mechanism for expanding a flat cylindrical label into a cylindrical shape and a mechanism for covering the cylindrical label over a container in order to use a perforated cylindrical label roll. There was a need to do.
On the other hand, in the present invention, since it is only necessary to add a perforation forming device to the labeling machine for all-around winding labels, the structure of the labeling machine can be simplified and the machine cost can be greatly reduced.
(3) In this invention, a cylindrical label can be formed on the outer peripheral surface of a container by sticking the label which formed the perforation just before sticking to a container.
Therefore, an inexpensive single label can be used in place of an expensive perforated cylindrical label, and the label cost can be greatly reduced.
(4) In the case of having a plurality of plate blades, the perforation forming interval formed on the label can be arbitrarily changed simply by changing the rotation speed of the plate blades.
(5) In the case of having a single plate blade, the perforation formation interval and the number of perforations formed on the label can be arbitrarily changed by changing the number of rotations of the plate blade.

The model figure which looked at the labeling machine carrying the perforation forming device concerning Example 1 of the present invention from the plane. Side view of perforation forming device Horizontal cross section of perforation forming device Horizontal cross section of perforation forming device Sectional view of IV-IV in FIG. 3A Assembly drawing of the perforation forming device with a part omitted Perspective view of cylindrical label showing example of perforation Horizontal sectional view of a perforation forming apparatus according to Embodiment 2 of the present invention Horizontal sectional view of a perforation forming apparatus according to Embodiment 3 of the present invention The perspective view of the cylindrical label which shows the example of formation of the perforation by the perforation forming apparatus concerning Example 3 of the present invention.

  Embodiments of the present invention will be described below with reference to the drawings.

<1> Outline of Labeling Machine FIG. 1 is a plan model diagram of a labeling machine equipped with a perforation forming device 10.
The labeling machine on which the present invention is premised is a label supply means 20 for continuously supplying at least labels in units of one sheet, and a transport drum 30 (for example, a relay drum 31 and a sticking drum 32) that attracts and transfers the labels to the outer peripheral surface. ) And container transport means 40 for transporting the container through the label attaching position.

  In the present invention, the perforation forming device 10 is provided close to the transport drum 30. In this example, the case where the perforation forming device 10 is provided close to the relay drum 31 will be described, but it is needless to say that the perforation forming device 10 may be provided on the sticking drum 32 side.

<1.1> Label The label to be used is a single label for all-around winding labels, and has a total length that allows a cylindrical label to be formed on the outer peripheral surface of the container by overlapping and adhering the label end to the label start end. .
The label material is not limited to resin labels such as heat-shrinkable shrink labels and stretchable stretch labels, but also includes paper labels.
As a label supply form, in addition to a roll label that forms a label by cutting a known tape piece, it includes a single-wafer label, a tack label, etc., and the label supply means 20 is a known one according to the form of these various labels. Including a supply mechanism.

<1.2> Conveying drum The conveying drum 30 is a drum for conveying the label from the label supply means 20 to the label attaching position, and in this example, a case where the drum is constituted by two drums of the relay drum 31 and the attaching drum 32 is shown. The number of drums to be configured may be appropriate.
The relay drum 31 and the pasting drum 32 shown in this example will be described. Both the drums 31 and 32 are known negative pressure suction type drums that rotate in one direction around the drum rotation shafts 33 and 34. Arc-shaped adsorbing portions 35 and 36 project from the outer peripheral surface at equal intervals, and negative pressure is generated on the outer peripheral surface of each adsorbing portion 35 and 36 over the label conveyance section. .

  The relay drum 31 and the sticking drum 32 differ only in the rotation direction, and the basic structure and the label transporting action are the same. Therefore, the relay drum 31 will be described in detail, and the description of the sticking drum 32 will be omitted.

<1.3> Relay Drum As shown in FIG. 4, the drum main body constituting the relay drum 31 is formed of aluminum, and the suction portion 35 is formed of a hard resin.
A plurality of air passages 37 are formed inside the drum body.
One end of each air passage 37 is exposed at the lower end of the relay drum 31, and the other end of each air passage 37 is exposed on the surface of the adsorption portion 35 of the relay drum 31 to form an adsorption hole 38.

  A fixed distribution board 50 is disposed on the bottom surface of the relay drum 31. The distribution board 50 has an arc-shaped negative pressure groove 51 formed on the upper surface thereof over the conveyance section of the label, and the lower end of each air passage 37 passes directly above the negative pressure groove 51, thereby the relay drum 31. A negative pressure is generated in each of the suction holes 38 on the outer peripheral surface.

<1.4> Container Conveying Means The container conveying means 40 includes a mechanism for carrying the container toward the label attaching position and a mechanism for carrying out the container after the label is attached. For example, a known screw conveyor or belt conveyor. , A rotary transport device or the like is appropriately combined.

<2> Perforation Forming Device FIG. 2 is a side view of the perforation forming device 10, FIGS. 3A and 3B are horizontal sectional views of the perforation forming device 10, FIG. 4 is a longitudinal sectional view of the perforation forming device 10, and FIG. 1 is a perspective view of a perforation forming apparatus 10.

The perforation forming device 10 is a device for forming a perforation at a predetermined position of a label being transported in a direction perpendicular to the label transport direction, and a vertical rotation shaft 11 and an axial direction of the rotation shaft 11 Of the plate blades 12 and 12 that rotate integrally around the rotary shaft 11 and the plate blades 12 and 12 that control the rotation of the plate blades 12 and 12 in accordance with the label passing timing. Rotation drive means.
The perforation forming apparatus 10 shown in this example includes a rotating body 13 fixed to the rotating shaft 11, a holder 14 assembled to the rotating body 13 in an exchangeable manner, and two plate blades 12 and 12 fixed to the holder 14. It has.

  The rotation shaft 11 of the perforation forming device 10 is in a parallel relationship with the drum rotation shaft 33 of the relay drum 31, and the cutting edge of the plate blade 12 is in a parallel relationship with the suction portion 35 of the relay drum 31. Furthermore, the radius of rotation of the two plate blades 12 and 12 is equal.

<2.1> Plate Blade Rotation Drive Unit The plate blade 12 and 12 rotation drive unit is a unit for controlling the rotation of the plate blades 12 and 12 in accordance with the label passing timing.
The rotating shaft 11 is connected to a motor 60 such as a servo motor, and the motor 60 is electrically connected to a control unit 61.
The control unit 61 can control the rotation of the plate blades 12 and 12 integral with the rotary shaft 11 by controlling the rotation of the motor 60 on and off and the rotation speed.

  Instead of the rotation control of the motor 60, the rotation shaft 11 may be rotated using the rotation of the relay drum 31 using a known gear mechanism.

<2.2> Rotating body As shown in FIGS. 3 and 5, the rotating body 13 has a shaft hole 13 a with a slit at its axis, and the shaft hole 13 a is fitted into the rotating shaft 11, so that the rotating body on the slit side. 13 is fastened to the rotating shaft 11 by fastening with a fixing bolt 15a.
The planar shape of the rotating body 13 is not limited to the illustrated substantially T-shape, and may be circular.

<2.3> Holder The holder 14 can be fitted to one side of the rotating body 13, and the holder 14 and the rotating body 13 are fixed to each other with a fixing bolt 15 b.
When exchanging the plate blades 12 having different dimensions, the fixing bolt 15b can be removed and replaced with a separate holder 14.
A pair of mounting grooves 14a, 14a parallel to each other are formed on the front surface of the holder 14, and the plate blade 12 is mounted in each mounting groove 14a.

  The holder 14 is not essential, and the holder 14 may be omitted and the blades 12 and 12 may be provided directly on the rotating body 13.

<2.4> Plate Blade The plate blade 12 is a molded body for forming a perforation vertically on a label. The plate blade 12 has a rectangular plate body 12a and a plurality of sawtooth-like projections provided on one side of the plate body at regular intervals. It has the incision tooth 12b.
The width, interval, and cross-sectional shape of the cutting teeth 12b formed in series are appropriately selected.
The plate blade 12 is preferably formed of a metal plate.
Even if the plate blade 12 is formed of a metal plate, since the suction portion 35 of the relay drum 31 is made of a hard resin, wear of the cutting teeth 12b of the plate blade 12 can be minimized.

<2.5> Fixing of the plate blade The plate body 12a of the plate blade 12 is accommodated in the mounting groove 14a of the holder 14 together with the abutting plate 16, and fixed by fixing bolts 15c.
The fixing means of the plate blade 12 is not limited to the above-described form. In short, the cutting teeth 12b of the plate blade 12 can be brought into contact with the outer peripheral surface of the suction portion 35 of the relay drum 31 from the front surface of the holder 14. What is necessary is just to provide so that it may protrude.

<2.6> Spacing of Plate Blades The blade edge interval L (FIG. 3) of the pair of plate blades 12 and 12 is separated corresponding to the perforation formation interval.
In this example, a holder 14 equipped with a pair of plate blades 12 and 12 having different blade edge distances L is manufactured in advance, and the blade edge distance L between the pair of plate blades 12 and 12 can be freely changed by changing the holder 14 unit. it can.
Therefore, not only the mounting accuracy of the plate blades 12 and 12 can be accurately managed, but also the replacement operation of the plate blades 12 and 12 can be performed easily and in a short time.

  Next, a method for applying a perforated label will be described.

<1> Label Affixing In FIG. 1, when a label is supplied from the label supply means 20, it is adsorbed and conveyed by the adsorbing portions 35 and 36 on the outer peripheral surface of the relay drum 31 and the adhering drum 32.
When the label adsorbed on the outer peripheral surface of the sticking drum 32 meets the container transported by the container transport means 40, the label is wound around the body of the rotating container to form a cylindrical label on the outer peripheral surface of the container. Is done.

The perforation forming apparatus 10 is a label just before the label is attached, and forms a perforation on the label in the process of being attracted to the relay drum 31 and transported.
The perforation forming method will be described in detail below.

<2> Formation of Perforation In FIGS. 1 and 3, the label adsorbed by the adsorbing portion 35 of the relay drum 31 passes through the perforation forming device 10.
The perforation forming device 10 rotates continuously or intermittently counterclockwise around the rotating shaft 11 in accordance with the label passing timing.

Among the two plate blades 12 and 12, as the first plate blade 12 passes through the suction portion 35 as shown in FIG. 3A, a large number of cutting teeth 12b formed on the front surface of the plate blade 12 reduce the label L. A perforation is formed in the vertical direction.
After the first plate blade 12 passes, the subsequent plate blade 12 passes through the suction portion 35 as shown in FIG. 3B. At this time, a large number of cutting teeth 12b on the front surface of the trailing plate blade 12 pass through the label L, and separate perforations are formed in the vertical direction.
In this way, two perforations are formed on the label L by rotating the plate blades 12 and 12 around the rotary shaft 11 in accordance with the label passing timing.

<3> Perforation Forming Position FIG. 6 shows a model diagram of a cylindrical label showing an example of perforation formation.
Fig (A) shows an example of forming a perforation c _1, c ₂ of the two articles at the end side of the label L, and FIG. (B) are perforation c ₁ Nijo the starting end side of the label L, then c ₂ An example is shown.
In any of the examples, the perforations c ₁ and c ₂ are formed at a location excluding the overlapping portion d where the start end of the label L and the rear end of the label L are bonded.

<4> Change of Perforation Interval The interval between the perforations c ₁ and c ₂ can be set by the interval L between the blade edges of the plate blades 12 and 12 shown in FIG.
Specifically, the interval between the perforations c ₁ and c ₂ is increased in proportion to the interval L between the blade edges of the plate blades 12 and 12.

Therefore, when changing the interval between the perforations c ₁ and c ₂ , the fixing bolt 15b shown in FIG. 3 is loosened to remove the holder 14 from the rotating body 13, and a new holder 14 equipped with plate blades 12 and 12 is attached. Just replace it.

When the plate blades 12 and 12 are replaced, it is preferable to remove the suction portion 35 of the opposing relay drum 31 from the drum body and replace it with a new suction portion 35.
Since the suction part 35 is made of resin, a tooth mark is formed to be depressed on the surface of the suction part 35.
Therefore, the influence of tooth traces can be avoided by replacing both the plate blades 12 and 12 with new suction portions 35.

  In the following, other embodiments will be described. In the description, the same parts as those in the above-described embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the first embodiment, the case where the two plate blades 12 and 12 are installed in a V shape in the direction of the centroid of the rotating shaft 11 is shown, but the plate blades 12 and 12 are parallel to each other as shown in FIG. You may arrange as follows.

  FIG. 8 shows another embodiment in which the perforation forming apparatus 10 is constituted by a rotating shaft 11 and a single blade 12 rotating around the rotating shaft 11.

The rotating shaft 11 is connected to a motor 60 such as a servo motor. The motor 60 is electrically connected to a control unit 61, and the rotation speed of the motor 60 can be controlled by the control unit 61.
In the present embodiment, when the label passes through the perforation forming device 10, the plate blades 12 are rotated by the number of perforated lines.
Specifically, two perforations can be formed on the label by one plate blade 12 rotating twice.
Furthermore, the perforation formation interval can be arbitrarily changed by controlling the rotational speed of one plate blade 12.

FIG. 9 shows an example in which perforations are formed on a label by the perforation forming apparatus 10 according to the present embodiment.
FIG. 9A shows a form in which perforations c ₁ and c ₂ are formed on the end side of the label and the end side of the label L, respectively, with the overlapping portion d of the label in between, and FIG. a position apart from the parts d shows the mode of forming the perforations c _1, c ₂ of the two articles.

DESCRIPTION OF SYMBOLS 10 ... Perforation forming apparatus 11 ... Rotary shaft 12 ... Plate blade 12a ... Plate body 12b ... Cutting teeth 20 ... Label supply means 30... Transport drum 31 .. Relay drum 32... Adhesive drum 40 .. Container transport means 60.

Claims (6)

Negative pressure suction having a label supply means, a container transfer means for transferring the container through a label attaching position, and a suction portion that rotates in the position direction around the drum rotation shaft and has a plurality of suction holes formed on the outer peripheral surface In a labeling machine comprising a transport drum of the type
A perforation forming device is arranged close to the transfer drum,
The perforation forming device includes a rotation shaft arranged in parallel with the drum rotation shaft,
One or a plurality of plate blades arranged along the axial direction of the rotating shaft and rotating integrally with the rotating shaft;
A plate blade rotation drive means for controlling the rotation of the plate blade in accordance with the passage timing of the label,
The plate blade has a plurality of formed teeth on the front surface thereof,
Between the rotating plate blade and the suction part of the transport drum, the perforation is formed in the label in a direction orthogonal to the label transport direction,
A labeling machine equipped with a perforation forming device.   2. The perforation forming apparatus according to claim 1, further comprising: a rotating body fixed to a rotating shaft; and a holder removably assembled to the rotating body, wherein one or a plurality of plate blades are attached to the holder. A labeling machine having a perforation forming device.   3. A labeling comprising a perforation forming device according to claim 1, wherein the label is an all-around wound label having a total length capable of forming a cylindrical label on the outer peripheral surface of the container. Machine. A method of forming a perforation on a label in a direction perpendicular to the label transport direction on a label that is attracted to and transported by the suction portion on the outer peripheral surface of the transport drum,
A plate blade that approaches the transport drum, is parallel to the drum rotation axis of the transport drum and rotates integrally with the rotation shaft,
The plate blade has a plurality of formed teeth on the front surface thereof,
The perforation is formed in the label between the suction part of the transport drum by rotating the plate blade according to the passing timing of the label,
A method for forming perforations on a label.   5. The plurality of plate blades that rotate integrally with the rotary shaft are arranged at intervals along the rotation direction of the plate blades, and the plurality of plate blades are rotated in accordance with the passage of the label. A method for forming perforations on a label, characterized in that:   5. The method according to claim 4, further comprising a single plate blade that rotates integrally with the rotary shaft, wherein the single plate blade is rotated by the same number as the number of perforations formed in accordance with the passage of a label. A method for forming perforations on a label.

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