EP2781460B1 - Resin-label-mounting device and resin-label-mounting method - Google Patents
Resin-label-mounting device and resin-label-mounting method Download PDFInfo
- Publication number
- EP2781460B1 EP2781460B1 EP12849181.8A EP12849181A EP2781460B1 EP 2781460 B1 EP2781460 B1 EP 2781460B1 EP 12849181 A EP12849181 A EP 12849181A EP 2781460 B1 EP2781460 B1 EP 2781460B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- resin
- label
- end portion
- made label
- rear end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 19
- 239000003292 glue Substances 0.000 claims description 75
- 238000010438 heat treatment Methods 0.000 claims description 66
- 238000004804 winding Methods 0.000 claims description 4
- 238000007757 hot melt coating Methods 0.000 description 15
- 239000012943 hotmelt Substances 0.000 description 9
- 238000010380 label transfer Methods 0.000 description 9
- 229920006300 shrink film Polymers 0.000 description 9
- 238000003466 welding Methods 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000002372 labelling Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D23/00—Details of bottles or jars not otherwise provided for
- B65D23/08—Coverings or external coatings
- B65D23/0842—Sheets or tubes applied around the bottle with or without subsequent folding operations
- B65D23/085—Sheets or tubes applied around the bottle with or without subsequent folding operations and glued or otherwise sealed to the bottle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
- B65C3/00—Labelling other than flat surfaces
- B65C3/06—Affixing labels to short rigid containers
- B65C3/065—Affixing labels to short rigid containers by placing tubular labels around the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
- B65C9/00—Details of labelling machines or apparatus
- B65C9/20—Gluing the labels or articles
- B65C9/22—Gluing the labels or articles by wetting, e.g. by applying liquid glue or a liquid to a dry glue coating
- B65C9/2204—Gluing the labels or articles by wetting, e.g. by applying liquid glue or a liquid to a dry glue coating using spraying means
- B65C9/2213—Applying the liquid on the label
- B65C9/2217—Applying the liquid on the label discretely, i.e. several points or strips or interrupted films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
- B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
Definitions
- the present invention relates to a resin-label mounting device and a resin-label mounting method in accordance with the preamble of claims 1 and 2 respectively, and known from WO 2011/061091 .
- Patent Document 1 There has been known a labeler with which a belt-shaped label is wound to and mounted on an outer circumferential face of a vessel (for example, see Patent Document 1).
- a labeler disclosed in Patent Document 1 a holding portion for holding a label is formed on an outer circumferential face of a conveying drum, which is rotated by a rotating unit, hot-melt is applied from a hot-melt coating head to the label, which is rotationally conveyed as being held by the holding portion, and the label is wound around and affixed to the vessel.
- hot-melt is applied while an ejection port of the hot-melt coating head is in contact with the label, which is held by the label-holding portion.
- Patent document 2 disclosing a method for producing sleeve-like labels comprising: a step of unwinding a supply reel of heat-shrink film, which comprises a plurality of pre-pasted portions which are distributed discretely along the unwinding direction of the supply reel; a step of separating at least one band of heat-shrink film from the supply reel, the band of heat-shrink film comprising at least one of the pre-pasted portions; a step of feeding the band of heat-shrink film to a forming spindle; a step of wrapping the band of heat-shrink film around the forming spindle, a region of overlap being provided between a first longitudinal end of the band of heat-shrink film in contact with the forming spindle and the second longitudinal end of the band of heat-shrink film, the pre-pasted portion being arranged at least partially at a portion of the overlap region; a step of sealing a first longitudinal end to a second longitudinal end of the band of heat
- hot-melt can be applied thinly to a label without causing cobwebbing after the hot-melt is applied, so that appearance at completion is excellent.
- glue hot-melt
- glue is applied while the ejection port of the hot-melt coating head is in contact with the label and glue has to be scraped away after being ejected. Accordingly, when glue is to be applied even to a very end portion of a label, glue seeps out from the label to cause cobwebbing and the like. Therefore, as illustrated in FIG. 10(a) , there exists an area 2aa at a terminus to which glue cannot be applied when glue is applied to a rear end portion 2a of a label 2 (in the drawing, a portion marked by P denotes a glue-applied area).
- the area 2aa to which glue is not applied exists at the terminus of the label, which is wound around the vessel, the area 2aa is in a partially detached state above a front end portion 2b of the label, as illustrated in FIG. 10(b) .
- heating and shrinking is performed in a shrink tunnel in the above state, there arises a problem that the appearance at completion becomes worse with the part 2aa warping (see FIG. 10(c) ).
- the label is either mounted on a vessel after being formed into a cylindrical shape with the rear end of the label overlapping a front end using a mandrel or it is wound directly around the vessel, and subsequently, the label is heated and shrunk.
- a problem or poor appearance occurs with visible print at a position to which glue is thickly applied after shrinking, which is caused by variation in thickness of applied glue in a glue-applied range.
- a problem can also arise where the rear end of the label becomes separated from the front end, which is caused by that the portion to which glue is applied being pulled with shrinkage of the label when shrinking and the adhesive force of the glue is overcome by the pulling force.
- the objective of the present invention which was devised to solve the abovementioned problems, is to provide a resin-label mounting device and a resin-label mounting method that prevent deformation such as curling and the like at a terminus, which is an area where glue is not applied even when a rear end portion has glue applied and is bonded to a front end portion, and to provide a resin-label mounting device and a resin-label mounting method in which the rear end of the label is bonded reliably to the front end with excellent appearance after shrinking, even when variation occurs in the thickness of the applied glue.
- an additional objective of the present invention is to provide a vessel on which the resin-made label as described above is mounted.
- a resin-label mounting device including a conveying drum which holds and conveys a resin-made label; a glue-applying unit which applies glue to a rear end portion of the resin-made label held by the conveying drum; a plurality of mandrels which are arranged on a rotating body, each mandrel winding the resin-made label upon receiving from the conveying drum, forming a cylindrical shape with a rear end portion of the resin-made label overlapping and bonded to a front end portion, and using suction to hold the resin-made label; a drive unit which causes each of the mandrels to be spun; a vessel base, which is arranged to correspond to each mandrel, and on which a supplied vessel is placed; a mounting unit which mounts the resin-made label on the vessel after removal from the mandrel; a heating and shrinking unit which heats and shrinks the resin-made label mounted on the vessel; and a heating unit which is in contact with
- a resin-label mounting device including a conveying drum which holds and conveys a resin-made label; a glue-applying unit which applies glue to a rear end portion of the resin-made label held by the conveying drum; a plurality of mandrels which are arranged on a rotating body, each mandrel winding the resin-made label upon receiving from the conveying drum, forming into a cylinder shape with a rear end portion of the resin-made label overlapping and bonded to a front end portion, and using suction to hold the resin-made label; a drive unit which causes each of the mandrels to be spun; a vessel base, which is arranged to correspond to each mandrel, and on which a supplied vessel is placed; a mounting unit which mounts the resin-made label on the vessel after removal from the mandrel; a heating and shrinking unit which heats and shrinks the resin-made label mounted on the vessel; and a
- a resin-label mounting method which includes steps of applying glue to a rear end portion of a resin-made label, forming the resin-made label into a cylindrical shape in which the rear end portion of the resin-made label overlaps a front end portion as the resin-made label is wound around the outer circumference of a mandrel, heating the rear end portion of the resin-made label, mounting the cylinder-shaped resin-made label on a vessel after removal from the mandrel, and heating and shrinking the resin-made label; the heating of the rear end portion of the resin-made label being performed at a higher temperature than a temperature of the heating and shrinking of the resin-made label and for a shorter period of time than a period of time that would be necessary to weld the resin-made label, so that the rear end portion of the resin-made label is heated and cured.
- a resin-label mounting method which includes steps of applying glue to a rear end portion of a resin-made label, forming the resin-made label into a cylindrical shape in which the rear end portion of the resin-made label overlaps a front end portion as the resin-made label is wound around an outer circumference of a mandrel, heating and welding the rear end portion of the resin-made label, mounting the cylinder-shaped resin-made label on a vessel after removal from the mandrel, and heating and shrinking the resin-made label.
- a resin-label mounting device including a conveying drum which holds and conveys a resin-made label; a glue-applying unit which applies glue to a rear end portion of the resin-made label held by the conveying drum; a vessel base on which a supplied vessel is placed; a rotating unit which rotates the vessel base; and a heating and shrinking unit which heats and shrinks the resin-made label mounted on the vessel, the resin-made label being wound around the vessel, a rear end portion of the resin-made label overlapping and being bonded to a front end portion of the resin-made label, and the resin-made label then being heated and shrunk to be mounted on the vessel; wherein a heating unit, which is in contact with the rear end portion of the resin-made label and which heats the contacted portion, is provided, a temperature of the heating unit being set higher than a temperature of the heating and shrinking unit, the contact occurring for a shorter period of time than a period of time that
- a resin-label mounting device including a conveying drum which holds and conveys a resin-made label; a glue-applying unit which applies glue to a rear end portion of the resin-made label held by the conveying drum; a vessel base on which a supplied vessel is placed; a rotating unit which rotates the vessel base; and a heating and shrinking unit which heats and shrinks the resin-made label mounted on the vessel, the resin-made label being wound around the vessel, a rear end portion of the resin-made label overlapping and bonded to a front end portion of the resin-made label, and the resin-made label then being heated and shrunk to be mounted on the vessel; wherein a heating unit, which is in contact with the rear end portion of the cylinder-shaped resin-made label and which heats and welds the contacted portion, is provided.
- a resin-label mounting method which includes steps of applying glue to a rear end portion of a resin-made label, forming the resin-made label into a cylindrical shape in which the rear end portion overlaps a front end portion as the resin-made label is wound around an outer circumference of a vessel, heating the rear end portion of the resin-made label, and heating and shrinking the resin-made label; the heating of the rear end portion of the label being performed at a higher temperature than a temperature of the heating and shrinking of the label and for a shorter period of time than a period of time that would be necessary to weld the resin-made label, so that the rear end portion of the resin-made label is heated and cured.
- a resin-label mounting method which includes steps of applying glue to a rear end portion of a resin-made label, forming the resin-made label into a cylindrical shape in which the rear end portion overlaps a front end portion as the resin-made label is wound around an outer circumference of a vessel, heating and welding the rear end portion of the resin-made label, and heating and shrinking the resin-made label.
- a vessel on which a resin-made label is mounted the resin-made label being formed into a cylindrical shape in which glue applied to a rear end portion of the resin-made label overlaps and is bonded to a front end portion of the resin-made label, having the rear end portion heated and cured, and subsequently being heated and shrunk at a lower temperature than the heating temperature for curing.
- a vessel on which a resin-made label is mounted the resin-made label being formed into a cylindrical shape in which glue applied to a rear end portion of the resin-made label overlaps and is bonded to a front end portion of the resin-made label, having the rear end portion heated and welded, and subsequently being heated and shrunk.
- a heating unit is in contact with a rear end portion of a resin-made label for a shorter period of time than a period of time in which the resin-made label is welded at a higher temperature than a heating temperature of a heating-welding unit, so that a terminus thereof is cured. Accordingly, there is an advantage that the terminus of the resin-made label to which glue is not applied is prevented from being deformed when the resin-made label mounted on a vessel in a post-labeling process is heated and shrunk to provide better appearance as a product.
- the rear end of the label can be bonded reliably regardless of viscosity of glue while providing excellent appearance as a product with less visible glue print even when the applied glue varies in thickness. Furthermore, there is an advantage that the appearance as a product can be improved because the vessel on which the heated and shrunk resin-made label is mounted is prevented from being deformed when the resin-made label is heated and shrunk.
- a plurality of label-holding portions are arranged on an outer circumferential face of a label-conveying drum at even intervals.
- a resin-made label cut by a cutter to have a predetermined length is transferred to and held by each label-holding portion.
- Glue is applied by a glue-applying unit to a rear end portion of the resin-made label, which is held by the label-holding portion.
- a vessel is supplied onto a vessel base which is arranged at the lower side of a rotating body of the vessel-conveying unit, while the resin-made label is transferred to a mandrel which is arranged above the vessel.
- the front end portion is attached to and held by the mandrel, so that the resin-made label is wound around the mandrel owing to a revolution (orbit) of the conveying drum and the rotating body of the vessel-conveying unit and rotation of the mandrel.
- bonding is performed with the glue.
- a heater is arranged along a conveyance passage of the mandrel due to the rotating body so as to heat the overlapped portion of the resin-made label at a higher temperature than a temperature for heating and shrinking in a shrink process to be performed later, and for a shorter period of time than a period of time that would be necessary to weld the resin-made label.
- the terminus of the rear end portion of the resin-made label to which glue is not applied is cured by heating with the heater. The terminus is prevented from being curled or deformed in other ways when the vessel affixed with the cylinder-shaped label is heated and shrunk as it is introduced into a shrink tunnel in a post-labeling process. Thus, improving the appearance of a product is achieved.
- FIG. 1 An overall configuration of a resin-label mounting device will be briefly described with reference to FIG. 1 .
- a belt-shaped label 2 having a predetermined width is wound into a roll shape and is supported by a roller stand (not illustrated).
- the belt-shaped label 2 is drawn from the roller stand, fed through a plurality of rollers 4 to a cutter 6 consisting of a pair of rotating members 6A, 6B and cut by the cutter 6.
- the resin-made label 2 cut to a predetermined length by the cutter 6 is transferred to a label-conveying drum 10 at a label-transfer position T via a transfer drum 8.
- a plurality (in this embodiment, four) of label-holding portions 12 are arranged equally spaced on an outer circumferential face of the label-conveying drum 10 in the circumferential direction. Each of the label-holding portions 12 holds and rotationally conveys an individual label 2 one by one.
- a glue-applying unit 14 is arranged outside a label conveyance path downstream from the label transfer position T of the conveying drum 10 from the transfer drum 8. According to the glue applying unit 14, glue ejected from a later-described ejection port is applied to a predetermined segment of the label 2, which is held by the label-holding portion 12 of the conveying drum 10.
- the glue-applied label 2 is wound, at a label transfer position S, around an outer circumferential face of a mandrel 28 (see FIG. 1 and FIG. 5 which is described later) which is rotated by a vessel-conveying device 16, and is formed into a tubular shape with a front end portion and a rear end portion bonded thereof.
- a vessel 18 on which the tube-shaped resin-made label 2 is to be mounted is conveyed by a supply conveyor 20 and is transferred to a supply star wheel 24 while being separated by an infeed screw 22 at predetermined intervals.
- the supply star wheel 24 rotationally conveys and supplies the received vessel 18 to a rotary-type vessel-conveying device 16.
- the vessel-conveying device 16 rotationally conveys the vessel 18 supplied from the inlet star wheel 24.
- the mandrel 28 winds the resin-made label 2 received from the conveying drum 10 and forms the tube-shaped label 2.
- the formed tube-shaped label 2 is detached from the mandrel 28 and mounted on the vessel 18.
- the vessel 18 with the tube-shaped resin-made label 2 mounted is transferred to an ejection star wheel 30 after being rotationally conveyed by the vessel-conveying device 16 and ejected onto an ejection conveyor 32.
- the vessel 18 is conveyed into a subsequent shrink tunnel 34 by the ejection conveyor 32 and is heated for a predetermined period of time at a predetermined temperature. Owing to the heating, the tube-shaped label 2 is shrunk and affixed to an outer face of the vessel 18.
- the conveying drum 10 is rotatably positioned on a base plate 36.
- An upright support cylinder 38 is fixed on the base plate 36.
- An upright rotary shaft 44 is rotatably supported via upper and lower ball bearings 40, 42 which are held in the support cylinder 38.
- a cylindrical member 46 is fitted to the rotary shaft 44 on an upper outer circumferential face thereof extending upward from the support cylinder 38.
- the cylindrical member 46 is joined to an outer face of the rotary shaft 44 with a joint such as a key, so that its height can be adjusted with a vertical movement while being rotated integrally with the rotary shaft 44.
- a cylinder-shaped cover 48 is fixed to an outer circumference of the cylindrical member 46.
- a cap 50 is fixed to an upper end thereof so as to be rotated integrally with the rotary shaft 44 and the cylindrical member 46.
- a circular plate (hereinafter, called a fixed plate) 52 which is horizontally fixed via a supporting column (not illustrated) or the like is arranged approximately at the same height as a lower end part of the cylindrical member 46.
- a ball bearing 54 is arranged between an outer circumference of the lower end part of the cylindrical member 46 and an inner circumferential face of the fixed plate 52. The ball bearing 54 connects the fixed plate 52 and the cylindrical member 46, which rotates with the rotary shaft 44.
- a ring-shaped slide member 56 is fixed on an upper face of the outer circumferential part of the fixed plate 52.
- a later-described vacuum passage for the fixed side is formed at the fixed plate 52 and the ring-shaped slide member 56.
- a flange 48a is formed at a lower end of the cylinder-shaped cover 48, which is fixed to an outer circumference of an upper part of the rotary shaft 44.
- a circular rotary plate 58 is fixed to a lower face of the flange 48a.
- the rotary plate 58 slides on an upper face of the ring-shaped slide member 56 when rotating.
- the conveying drum 10, which holds and rotatably conveys the label 2 is attached onto an outer circumferential part of the rotary plate 58.
- the conveying drum 10 is rotated integrally with the rotary plate 58.
- the rotary shaft 44 is joined to a rotating unit (not illustrated) below the base plate 36, and is rotated.
- the conveying drum 10 includes a ring-shaped bottom face 10a and a cylindrical wall face (hereinafter, called a cylindrical portion) 10b which is upright from an outer circumferential part of the bottom face 10a.
- the plurality of label-holding portions 12 are arranged on an outer face of the cylindrical portion 10b of the conveying drum 10.
- four of the label holding portions 12 are arranged on the outer circumferential face of the cylindrical portion 10b at even intervals in the circumferential direction (see FIG. 1 ).
- Each of the label-holding portions 12 includes a protruded portion 12a for holding a rear end portion 2a of the label 2 (see FIGs. 3 and 10a )).
- an upper face 12aa is shorter than a bottom face 12ab, a side face 12ac at the front side in the rotation direction is slanted, and a side face 12ad at the rear side is approximately linear (being linear in the radial direction).
- the upper face 12aa is formed into an arc shape that is coaxial with an arc (matching the outer circumferential face of the conveying drum 10) of the bottom face 12ab.
- An arc-shaped groove 52a is formed at a portion of the upper face of the fixed plate 52 where the slide member 56 is fixed, so that vacuum is introduced via a pipe 60 which is connected to the lower face side.
- a number of vertically penetrating holes 56a are formed in the ring-shaped slide member 56, which is fixed on the fixed plate 52, covering a range of the arc-shaped groove 52a that overlaps with the arc-shaped groove 52a of the fixed plate 52.
- the arc-shaped groove 52a and the penetrating holes 56a are formed in a range from a slightly upstream position of the transfer position T (see FIG. 1 ) where the conveying drum 10 receives the label 2 from the transfer drum 8, to the transfer position S where the label 2 held by the label holding portion 12 is attached to the mandrel 28.
- a plurality of suction holes 10e that are open to the outer face are formed in the wall face except where the protruded portions 12a are arranged at the rear side of the label-holding portions 12.
- the suction holes 10e are connected to vacuum introduction holes 58b which opens to the lower face of the rotary plate 58 via a vertical passage 10c which is formed in the cylindrical portion 10b of the conveying drum 10, a radial passage 10d which is formed in the bottom portion 10a, a passage 58a which is formed in the rotary plate 58 and connected to the radial passage 10d, and the like.
- the suction holes 10e are formed in the protruded portions 12a as well.
- the suction holes 10e are formed so as to be open to a range other than a range where hot-melt is applied.
- the label 2 can be attached, due to a vacuum forced in the suction hole 10e, to a section of the cylindrical portion 10b where the vacuum introduction port 58b of the rotary plate 58 communicating with each suction port 10e overlaps with the penetrating hole 56a which is formed in the slide member 56 on the fixed side. Further, when the vacuum introduction port 56b is rotated and arrives at the label transfer position S, the vacuum introduction port 56b is deviated from the penetrating hole 56a of the slide member 56 and the arc-shaped groove 52a of the fixed plate 52, and vacuum is disconnected. Then, the held label 2 is released.
- the glue-applying unit 14 is arranged at the outer side of the cylindrical portion 10b of the conveying drum 10 and oriented to face the conveying drum 10.
- the glue-applying unit 14 is arranged upstream the label transfer position S where a label is transferred to the mandrel 28 from the label holding portion 12 of the conveying drum 10.
- the glue-applying unit 14 applies glue to a set area of the rear end portion 2a of the label 2 held by the protruded portion 12a where glue is to be applied.
- the glue-applying unit 14 is attached onto an attachment base 62 via an air cylinder 64 so as to be capable of being advanced and retreated in the direction of the conveying drum 10 with an action of the air cylinder 64.
- the glue-applying unit 14 includes, on a side facing the conveying drum 10, a hot-melt coating head 66 in which an ejection port 66a for ejecting glue (hot-melt) is formed (see FIGs. 3 and 4 ).
- the hot-melt coating head 66 includes the vertically long ejection port 66a whose length is slightly shorter than the width of the label 2 (a vertical length when held by the label holding portion 12 of the conveying drum 10).
- the ejection port 66a is connected to a glue reserve 14a which is arranged in a main body of the glue-applying unit 14 via a passage 66b (see FIG. 3 ) in the hot-melt coating head 66.
- the glue reserve 14a is connected to a glue-supplying unit 68 (consisting of a reserve tank and a pump (not illustrated)) which is controlled by a control unit (see FIG. 2 ).
- the glue ejection port 66a is formed as a single lengthwise opening in the vertical direction.
- the shape of the ejection port 66a can be appropriately selected such that a number of small openings are arranged at even intervals, or one opening is formed only at a portion where glue is required to be applied, or the like.
- shrink-enabled glue having high viscosity is used in the present embodiment. Accordingly, even if a label is pulled during shrinking, bonding can be firmly performed without deviation.
- a portion thereof which is closest to the label-conveying drum 10 is formed as a narrow flat face 66c and the vertically-long ejection port 66a is formed in the top end side of the flat face 66c.
- the other side portion at the rear side in the rotation direction is formed of two slanted faces 66e, 66f that are recessed in a direction to create distance between them and the outer face of the conveying drum 10.
- the slanted face 66e that continues from the ejection port 66a is made to have a sharp angle to prevent glue from sticking thereto.
- the arc-shaped side portion 66d of the hot-melt coating head 66 can be in contact with the label in the vicinity of a portion connected to the flat face 66c, while the side portions 66e, 66f on the opposite side are configured not to make contact with the label 2 at all.
- a configuration of the vessel-conveying device 16 will be described with reference to FIGs. 1 and 5 .
- An upright center shaft 72 is arranged on a base 70.
- a cylindrical member 76 (hereinafter, called a rotating cylindrical member)is rotatably supported by the outer circumference thereof via upper and lower bearings 74.
- a horizontal rotating disc 78 is attached to the rotating cylindrical member 76 approximately at the center in the vertical direction and is rotated integrally with the rotating cylindrical member 76.
- a plurality of vessel bases 80 are arranged, at even intervals in the circumferential direction, at an outer circumferential portion of the rotating disc 78 (hereinafter, called a lower rotating disc) which constitutes a lower portion of the rotating body 26.
- Vessels 18 fed from the inlet star wheel 24 are placed sequentially on the vessel bases 80 and rotatably conveyed by the rotation of the rotating body 26.
- Two horizontal rotating discs (an upper rotating disc 84 and a middle rotating disc 86) joined together above and below each other with an upright connecting member 82 are attached to an upper end of the rotating cylindrical member 76 and are rotated integrally with the rotating cylindrical member 76 and the lower rotating disc 78.
- the rotating body 26 consisting of the rotating cylindrical member 76, the three rotating discs 84, 86, 78 being at the upper, middle, and lower positions, and the like is rotated while a driving force of a driving unit (not illustrated) is transmitted via a gear 88 which is fixed to the outer circumference at the lower end of the rotating cylindrical member 76.
- the mandrels 28 are rotatably supported, at even intervals in the circumferential direction, on a lower face side of an outer circumferential portion of the middle rotating disc 86.
- the positions of the mandrels 28 and the vessel bases 80 are directly above and below one another and matching when viewed vertically, and are revolved (orbited) due to rotation of the rotating body 26 so as to maintain their matching positions from the vertical point of reference.
- the mandrels 28 are rotated by servomotors 90 for mandrel rotation arranged on the upper face of the middle rotating disc 86.
- the servomotors 90 for mandrel rotation are controlled by a control unit (not illustrated) for controlling such movements as rotation (spin), positioning, and the like for the mandrels 28.
- the mandrels 28 are arranged at the same height as the conveying drum 10 which supplies the resin-made labels 2.
- the resin-made label 2 is transferred to the mandrel 28 which arrives at the position (label transfer position S) of the conveying drum 10 with rotation of the rotating body 26.
- An outer diameter of the mandrel 28 is slightly larger than an outer diameter of the vessel 18.
- a number of suction holes are formed in the mandrel 28 and oriented toward the outer facing side and connected to a vacuum source (not illustrated). Owing to suctioning through the suction holes, the label 2 can be attached to and held at the outer circumferential face thereof.
- a lifting-lowering shaft 94 with a top locator 92 fixed at a lower end thereof is inserted through a center portion of each mandrel 28.
- a joint block 96 is attached to an upper end part of the lifting-lowering shaft 94.
- a slider 98 is fixed to the joint block 96 at an inner side in the radial direction of the rotating body 26.
- the slider 98 is engaged with a vertical guide rail 100, which is attached to the upper rotating disc 84, and an outer facing side of a ring-shaped plate 99 joined to a lower side of the upper rotating disc 84 via a connecting member 82, so as to guide lifting and lowering of the lifting-lowering shaft 94 and the top locator 92.
- a cam follower 102 is attached to the joint block 96 at a face that is oriented toward the outer side of the rotating body 26 and engaged with a cam groove 104a of a ring-shaped cam 104, which is fixed to the outer side of the rotating body 26.
- the top locator 92 and the lifting-lowering shaft 94 are lifted and lowered.
- a picker 106 which is capable of being lifted and lowered between the mandrel 28 on the upper side and the vessel 18 placed on the vessel base 80 on the lower side.
- the picker 106 is attached to an upper end of a lifting-lowering rod 108 which penetrates vertically through the lower rotating disc 78 via a horizontal attachment plate 110.
- a joint block 112 is fixed to a lower end of the lifting-lowering rod 108.
- a slider 114 is attached to an inner side of the joint block 112 in the radial direction of the rotating body 26.
- a cam follower 116 is attached to the outer side in the radial direction thereof.
- the cam follower 116 is engaged with a ring-shaped plate cam 120 which is attached to a fixing base 118 at the outer side of the vessel-conveying device 16.
- the cam follower 116 is lifted and lowered in accordance with a shape of the plate cam 120 so as to lift and lower the picker 106 along with the lifting-lowering rod 108.
- Two horizontal ring-shaped plates 124, 126 are fixed to a lower facing side of the lower rotating disc 78 via connecting members 122 formed in the vertical direction.
- a vertically arranged guide rail 128 is attached to outer faces of the ring-shaped plates 124, 126.
- the slider 114 is engaged with the guide rail 128 and guides lifting and lowering of the lifting-lowering rod 108 and the picker 106.
- the picker 106 is configured to be capable of being opened and closed, and holds the label 2 wound around the mandrel 28 when closed.
- the picker 106 includes a pair of holding members 132, 132 (see FIG. 6 ) attached to distal ends of two arms 130, 130.
- Both the arms 130, 130 are attached respectively at upper ends of two rods 134, 134 which penetrate through the lower rotating discs 78.
- Gears 136, 136 are formed on the outer circumferences of both the rods 134, 134 and engaged with each other.
- a lever 138 is fixed to one rod 134.
- a cam follower 140 is attached to a distal end of the lever 138.
- a picker open-close cam 142 is arranged on a fixing base 118 located on the outside of the rotating body 26. The lever 138 is swung by the open-close cam 142, so that the rod 134 and the gear 136 are rotated and both the holding members 132, 132 of the picker 106 are opened and closed.
- the picker 106 is distanced from the outer face of the mandrel 28 (or the vessel 18) when opened. When closed, the picker 106 forms a circular shape with an inner diameter being slightly larger than an outer diameter of the mandrel 28 and the vessel 18. The center of the picker 106 in the closed state, the axis center of the mandrel 28 on the upper side, and the axis center of the vessel 18 placed on the vessel base 80 on the lower side are positioned on the same axis line. Each picker 106 is connected to a vacuum source (not illustrated) via a vacuum tube 144. An outer facing side of the cylinder-shaped resin-made label 2 wound around the mandrel 28 can be attached thereto with a suction hole 132a formed in an inner face side thereof.
- a heating unit 146 is arranged downstream of the vessel-conveying device 16 from the position S where the label 2 is transferred from the conveying drum 10.
- a configuration of the heating unit 146 will be described with reference to FIGs. 5 , 7(a), and 7(b) .
- a fixing base 118 is arranged outside the rotating body 26 and the heating unit 146 is arranged above the fixing base 118.
- a vertical center shaft 154 is rotatably supported between a lower supporting plate 150 and an upper supporting plate 152, which are horizontally supported by an upright supporting column 148 that is arranged on the fixing base 118.
- a servomotor 156 for driving the heating unit is attached to a lower facing side of the lower supporting plate 150.
- the driving force of the servomotor 156 is transmitted to a middle shaft 164 via a pulley 158, a belt 160, and a pulley 162. Further, the rotation of the servomotor 156 is transmitted to the center shaft 154 owing to engagement between a gear 166 fixed to the middle shaft 164 and a gear 168 arranged at a lower end of the center shaft 154.
- Horizontal cross-shaped rotating bodies 170A, 170B are attached to the center shaft 154 at upper and lower parts thereof, and rotated integrally therewith.
- Leading end portions 170a of the upper and lower cross-shaped rotating bodies 170A, 170B are joined respectively with a vertical joint pin 172.
- One end of a vertical plate-shaped member 174 is joined to each joint pin 172 in a swingable manner.
- a heater 176 is fixed to the other end (swinging end) of each vertical plate-shaped member 174.
- the heaters 176 are arranged at four locations of leading end parts 170a of the cross-shaped rotating bodies 170A, 170B.
- a cam follower 178 is attached to a lower end of the leading end (the end part to which the heater 176 is fixed) of the vertical plate-shaped member 174.
- a horizontal cam plate 180 is arranged below the cross-shaped rotating bodies 170A, 170B.
- a cam groove 180a is formed in an upper face of the cam plate 180. The cam follower 178 is engaged with the cam groove 180a.
- the heater 176 can move as in a predetermined range to allow for an overlapped portion between the rear end portion 2a and the front end portion 2b of the resin-made label 2 that is wound to the mandrel 28.
- the heater 176 of the heating unit 146 is arranged at the same height as the mandrel 28, which is arranged on the rotating body 26 and has a flat face which is in contact with the rear end portion 2a of the resin-made label 2.
- the resin-made label 2 which is formed into a cylindrical shape by being wound around the mandrel 28 with both end portions 2a, 2b bonded, is heated as it is introduced into the shrink tunnel 34 after being mounted on the vessel 18, thereby shrinking the resin-made label 2 and affixing it to the outer face of the vessel 18.
- the heating temperature at the shrink tunnel 34 is 90°C
- the heater 176 is configured to heat at a higher temperature than the above (for example, 180°C). Further, contact between them occurs for a shorter period of time than a period of time that would be necessary to weld the resin-made label 2.
- An operation of the resin-label mounting device will be described.
- An elongated resin-made label 2 drawn from the roller label held by a label stand (not illustrated) is fed to the cutter 6 including the pair of rotating members 6A, 6B via the plurality of rollers 4 and cut to have the predetermined length corresponding to the size of the vessel 18.
- the cut label 2 is transferred to a label-conveying drum 10 at the label transfer position T via the transfer drum 8.
- the label-holding portion 12 having the protruded portion 12a, which holds the rear end portion 2a of the resin-made label 2 is arranged on the conveying drum 10.
- the front end portion 2b of the cut resin-made label 2 is attached to the outer face of the conveying drum 10.
- the rear end portion 2a of the resin-made label 2 is placed on the protruded portion 12a and held by suction from the suction hole 10e, which are open everywhere except for a range other than a range to which hot-melt is applied.
- the resin-made label 2 held by the label-holding portion 12 of the conveying drum 10 is conveyed to the next position of the glue-applying unit 14 due to rotation of the conveying drum 10.
- the glue-applying unit 14 is pulled back by the air cylinder 64 so that the ejection port 66a of the hot-melt coating head 66 is not in contact with the conveying drum 10 side.
- the glue-applying unit 14 is advanced toward the conveying drum 10 so that the flat face 66c of the hot-melt coating head 66 on which the ejection port 66a is formed makes contact with a portion of the resin-made label 2 which is held by the protruded portion 12a of the label holding portion 12.
- the protruded portion 12a which holds the rear end portion 2a of the resin-made label 2 has the slanted face 12ac at the front side in the rotation direction, the resin-made label 2 on the protruded portion 12a of the rotating conveying drum 10 and the flat face 66c of the hot-melt coating head 66 smoothly comes into contact without causing any interference.
- glue is supplied to the glue-applying unit 14 from the glue-supplying unit 68 in accordance with a signal of the control unit and applied to the resin-made label 2 as it is ejected from the ejection port 66a of the hot-melt coating head 66.
- the start timing of the glue application is determined in accordance with a position signal of the conveying drum 10 (a pulse signal of an encoder).
- the ejection of glue is stopped after a predetermined period of time has elapsed as measured with a timer.
- glue is ejected for a longer period of time corresponding thereto.
- the ejection of glue is not performed for a period of time required to apply glue to the total width (width in the rotation direction).
- the ejection is performed for a period of time slightly shorter than the above period of time and then stopped.
- Glue is applied to the remaining portion of the required application width so that glue remaining in the ejection port 66a is wiped away by the resin-made label 2.
- glue is not applied to the terminus 2aa of the rear end portion 2a of the resin-made label 2, so that a range remains that is free of glue (see FIG. 10(a) ).
- the vessel bases 80 are arranged on the rotating disc 78 at the lower side at even intervals in the circumferential direction.
- a vessels 18 is supplied from the inlet star wheel 24 to each of the vessel bases 80.
- the vessels 18 are conveyed by the supply conveyor 20 and separated to form predetermined intervals by the infeed screw 22, and then, are supplied onto the vessel bases 80 of the vessel-conveying device 16 (see FIG. 8(a1) ) via the inlet star wheel 24.
- the vessel base 80 to which the vessel 18 is supplied is rotationally conveyed with rotation of the rotating body 26.
- the lifting-lowering rod 94 and the top locator 92 are lowered by the top locator lifting-lowering cam 104, so that the vessel 18 is stably held with a head part thereof held by the top locator 92 (see FIG. 8(a2) ).
- the vessel 18 placed on the vessel base 80 arrives at the transfer position S where the resin-made label 2 is transferred from the conveying drum 10 to the mandrel 28 on the upper side.
- a range in which vessels are supplied is denoted by range A in FIGs. 1 and 8 .
- the picker 106 is lifted and positioned around the mandrel 28. Further, the picker 106 is opened.
- the resin-made label 2 held by the label-holding portion 12 of the conveying drum 10 is transferred to the mandrel 28, which is positioned above the vessel 18.
- the vessel conveying device 16 and the conveying drum 10 are driven in a synchronized manner.
- the mandrel 28 of the vessel-conveying device 16 and the label-holding portion 12 of the conveying drum 10 arrive at the label-transfer position S, the front end portion 2b of the resin-made label 2, which is held by the label-holding portion 12, makes contact with the outer face of the mandrel 28, which is revolutionarily moved (orbited) by rotation of the rotating body 26.
- the mandrel 28 is rotated (spun) by driving of the servomotor 90 and performs suctioning through the suction holes in the outer face.
- the front end portion 2b of the resin-made label 2 is in contact with the outer face, the front end portion 2b is firstly attached thereto and the resin-made label 2 is wound around the mandrel 28 owing to rotation of the conveying drum 10 and revolution and spinning of the mandrel 28.
- the resin-made label 2 with the front end portion 2b held by suction to the mandrel 28 is thereby wound and the conveying drum 10 discontinues suctioning of the label-holding portion 12.
- the resin-made label 2 is cut to have a length larger than the circumference of the mandrel 28.
- the rear end portion 2a overlaps the previously attached front end portion 2b and is bonded onto the front end portion 2b with glue applied to the rear end portion 2a of the resin-made label 2 by the glue-applying unit 14 (see FIG. 8(b) ).
- a range for label winding is denoted by range B in FIGs. 1 and 8 .
- the terminus 2aa of the rear end portion 2a is in a partially detached without being bonded to the front end portion 2b (see FIG. 10(b) ).
- the picker 106 is lowered below the mandrel 28 by the cam 120 for picker lifting-lowering, as illustrated on the left side of FIG. 5 and FIG. 8(b) .
- the mandrel 28, which holds the resin-made label 2 in the above state approaches the position of the heating unit 146, the heater 176 momentarily comes into contact, as illustrated in FIG. 9(a) , with the entire rear end portion 2a (a portion which is bonded to the front end portion 2b with glue while the partially detached terminus 2aa is not bonded because glue is not applied) (see FIG.
- FIG. 8(c) in accordance with the shape of the cam groove 180a which is illustrated in FIG. 7(a) .
- the heater 176 momentarily makes contact only for a period of time (for example, 0.1 second) in which both end portions of the resin-made label 2 are not welded by, a higher temperature than the heating temperature in the shrink tunnel 34 in a post-labeling process (for example, the heating temperature with the heater 176 is 180°C when the heating temperature at the shrink tunnel 34 is 90°C). Consequently, the entire rear end portion 2a of the resin-made label 2, including the terminus 2aa to which glue is not applied, is cured.
- a range for heating with the heater 176 is denoted by range C in FIGs. 1 and 8 .
- FIG. 9(b) illustrates a state after the terminus 2aa is cured.
- the cylinder-shaped label 2 is formed by bonding the rear end portion 2a and the front end portion 2b of the resin-made label 2, which is wound around the mandrel 28 in a state that the rear end portion 2a overlaps the front end portion 2b. Further, after the unbonded terminus 2aa of the rear end portion 2a is cured, the picker 106 is lifted to the height of the mandrel 28 while being kept in an opened state. Next, the picker 106, which is lifted to the lower outer circumference of the mandrel 28, makes contact with the outer face of the cylinder-shaped resin-made label 2, which is wound around the mandrel 28, by closing both holding members 132, 132 (see FIG.
- the picker 106 which holds the resin-made label 2 is lowered to the position of the vessel 18 at the lower side by the picker lifting-lowering cam 120.
- the picker 106 is lowered, the cylinder-shaped resin-made label 2 fitted around the mandrel 28 is slipped from the mandrel 28 and mounted to the circumference of the vessel 18 on the lower side while being kept in a cylindrical shape (see FIG. 8(e) ).
- a range for mounting the resin-made label 2 on the vessel 18 is denoted by range E in FIGs. 1 and 8 .
- the top locator 92 is lifted (see FIG. 8(g1) ). Then, the vessel 18 on which the resin-made label 2 is mounted is discharged onto the ejection conveyor 32 via the outlet star wheel 30 (see FIG. 8(g2) ).
- a range for lifting the top locator 92 and ejecting the vessel is denoted by range G in FIGs. 1 and 8 .
- the vessel 18 conveyed by the ejection conveyor 32 is introduced into the shrink tunnel 34, which is arranged on the conveyor 32.
- heating is performed for a predetermined period of time (for example, 3 seconds) at a temperature (for example, 90°C) below the temperature setting of the heater 176, so that the resin-made label 2 mounted on the vessel 18 is shrunk.
- the heater 176 is in contact for an extremely short period of time with the rear end portion 2a of the resin-made label 2 including the terminus 2aa, which is an area to which glue is not applied, so that the rear end portion 2a is cured.
- the unit to apply glue is not limited to the hot-melt coating head. It is also possible to apply glue even to the terminus of the rear end portion 2a of the resin-made label 2 using another applying unit such as an applying roller having a roller with glue adhered to the entire circumference in contact with the resin-made label 2 and to heat and cure the area to which glue is applied.
- curing is performed by heating the rear end portion 2a of the resin-made label 2 wound around each mandrel 28 with the heating unit 146 arranged at one position along a movement passage of the mandrel 28.
- the mandrel 28 is arranged above the vessel base 80.
- it is not limited to arrangement above the vessel base 80; it is also possible to be arranged below the vessel base 80.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Labeling Devices (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
Description
- The present invention relates to a resin-label mounting device and a resin-label mounting method in accordance with the preamble of
claims 1 and 2 respectively, and known fromWO 2011/061091 . - There has been known a labeler with which a belt-shaped label is wound to and mounted on an outer circumferential face of a vessel (for example, see Patent Document 1). According to a labeler disclosed in Patent Document 1, a holding portion for holding a label is formed on an outer circumferential face of a conveying drum, which is rotated by a rotating unit, hot-melt is applied from a hot-melt coating head to the label, which is rotationally conveyed as being held by the holding portion, and the label is wound around and affixed to the vessel. In the labeler disclosed in Patent Document 1, hot-melt is applied while an ejection port of the hot-melt coating head is in contact with the label, which is held by the label-holding portion. Another example can be seen in
Patent document 2 disclosing a method for producing sleeve-like labels comprising: a step of unwinding a supply reel of heat-shrink film, which comprises a plurality of pre-pasted portions which are distributed discretely along the unwinding direction of the supply reel; a step of separating at least one band of heat-shrink film from the supply reel, the band of heat-shrink film comprising at least one of the pre-pasted portions; a step of feeding the band of heat-shrink film to a forming spindle; a step of wrapping the band of heat-shrink film around the forming spindle, a region of overlap being provided between a first longitudinal end of the band of heat-shrink film in contact with the forming spindle and the second longitudinal end of the band of heat-shrink film, the pre-pasted portion being arranged at least partially at a portion of the overlap region; a step of sealing a first longitudinal end to a second longitudinal end of the band of heat-shrink film e.g. by means of laser sealing in order to provide a connection portion that lies transversely with respect to the direction of longitudinal extension of the band of heat-shrink film and arranged at the overlap region; a step of transferring the sleeve-like label formed around the forming spindle from the forming spindle to a container to be labelled. -
- PATENT DOCUMENT 1: Japanese Patent Laid-Open Application No.
2009-202897 - PATENT DOCUMENT 2:
WO 2011/061091 A1 - According to the configuration of the labeler disclosed in Patent Document 1, hot-melt can be applied thinly to a label without causing cobwebbing after the hot-melt is applied, so that appearance at completion is excellent. However, in the case that a belt-shaped label is heated and shrunk after being wound around the entire circumference of a vessel, the following problems occur with the application method disclosed in Patent Document 1. According to the application method, glue (hot-melt) is applied while the ejection port of the hot-melt coating head is in contact with the label and glue has to be scraped away after being ejected. Accordingly, when glue is to be applied even to a very end portion of a label, glue seeps out from the label to cause cobwebbing and the like. Therefore, as illustrated in
FIG. 10(a) , there exists an area 2aa at a terminus to which glue cannot be applied when glue is applied to arear end portion 2a of a label 2 (in the drawing, a portion marked by P denotes a glue-applied area). - If the area 2aa to which glue is not applied exists at the terminus of the label, which is wound around the vessel, the area 2aa is in a partially detached state above a
front end portion 2b of the label, as illustrated inFIG. 10(b) . When heating and shrinking is performed in a shrink tunnel in the above state, there arises a problem that the appearance at completion becomes worse with the part 2aa warping (seeFIG. 10(c) ). - Accordingly, instead of bonding with hot-melt, it has been evaluated to weld the rear end portion to the front end portion with heating using a heater in a state that the rear end portion overlaps the front end portion of the resin-made label. According to the method with heating using a heater, the rear end portion even at its terminus can be welded to obtain an excellent appearance. However, in the case that the rear end portion and the front end portion are welded while the resin-made label is wound around a mandrel, there arises a problem that the rear end portion overlapping the front end portion on the outer side is more likely to become detached without direct suction from a suction hole in the mandrel. Attempting heating and welding in a state in which an end part is detached can be problematic because the detached end part of the rear end portion will melt and welding cannot be performed successfully. In particular, the above problem is more likely to occur in a high speed operation, so that the labeler is difficult to be designed for high speed operation.
- Further, in the case that glue is applied to a terminus of a rear end portion of a label using another application device such as an applying roller, the label is either mounted on a vessel after being formed into a cylindrical shape with the rear end of the label overlapping a front end using a mandrel or it is wound directly around the vessel, and subsequently, the label is heated and shrunk. A problem or poor appearance occurs with visible print at a position to which glue is thickly applied after shrinking, which is caused by variation in thickness of applied glue in a glue-applied range. Further, a problem can also arise where the rear end of the label becomes separated from the front end, which is caused by that the portion to which glue is applied being pulled with shrinkage of the label when shrinking and the adhesive force of the glue is overcome by the pulling force.
- The objective of the present invention, which was devised to solve the abovementioned problems, is to provide a resin-label mounting device and a resin-label mounting method that prevent deformation such as curling and the like at a terminus, which is an area where glue is not applied even when a rear end portion has glue applied and is bonded to a front end portion, and to provide a resin-label mounting device and a resin-label mounting method in which the rear end of the label is bonded reliably to the front end with excellent appearance after shrinking, even when variation occurs in the thickness of the applied glue. Further, an additional objective of the present invention is to provide a vessel on which the resin-made label as described above is mounted.
- According to the present invention, there is provided a resin-label mounting device according to claim 1 and including a conveying drum which holds and conveys a resin-made label; a glue-applying unit which applies glue to a rear end portion of the resin-made label held by the conveying drum; a plurality of mandrels which are arranged on a rotating body, each mandrel winding the resin-made label upon receiving from the conveying drum, forming a cylindrical shape with a rear end portion of the resin-made label overlapping and bonded to a front end portion, and using suction to hold the resin-made label; a drive unit which causes each of the mandrels to be spun; a vessel base, which is arranged to correspond to each mandrel, and on which a supplied vessel is placed; a mounting unit which mounts the resin-made label on the vessel after removal from the mandrel; a heating and shrinking unit which heats and shrinks the resin-made label mounted on the vessel; and a heating unit which is in contact with the rear end portion of the cylinder-shaped resin-made label formed by the mandrel and which heats the contacted portion; a temperature of the heating unit being set higher than a temperature of the heating and shrinking unit, the contact occurring for a shorter period of time than a period of time that would be necessary to weld the resin-made label, so that the rear end portion of the resin-made label is heated and cured.
- Further, according to a second aspect which is not part of the invention, there is provided a resin-label mounting device including a conveying drum which holds and conveys a resin-made label; a glue-applying unit which applies glue to a rear end portion of the resin-made label held by the conveying drum; a plurality of mandrels which are arranged on a rotating body, each mandrel winding the resin-made label upon receiving from the conveying drum, forming into a cylinder shape with a rear end portion of the resin-made label overlapping and bonded to a front end portion, and using suction to hold the resin-made label; a drive unit which causes each of the mandrels to be spun; a vessel base, which is arranged to correspond to each mandrel, and on which a supplied vessel is placed; a mounting unit which mounts the resin-made label on the vessel after removal from the mandrel; a heating and shrinking unit which heats and shrinks the resin-made label mounted on the vessel; and a heating unit which is in contact with the rear end portion of the cylinder-shaped resin-made label formed by the mandrel and which heats and welds the contacted portion.
- Further, according to a third aspect which is part of the invention, there is provided a resin-label mounting method according to
claim 2 and which includes steps of applying glue to a rear end portion of a resin-made label, forming the resin-made label into a cylindrical shape in which the rear end portion of the resin-made label overlaps a front end portion as the resin-made label is wound around the outer circumference of a mandrel, heating the rear end portion of the resin-made label, mounting the cylinder-shaped resin-made label on a vessel after removal from the mandrel, and heating and shrinking the resin-made label; the heating of the rear end portion of the resin-made label being performed at a higher temperature than a temperature of the heating and shrinking of the resin-made label and for a shorter period of time than a period of time that would be necessary to weld the resin-made label, so that the rear end portion of the resin-made label is heated and cured. - Further, according to a fourth aspect which is not part of the invention, there is provided a resin-label mounting method which includes steps of applying glue to a rear end portion of a resin-made label, forming the resin-made label into a cylindrical shape in which the rear end portion of the resin-made label overlaps a front end portion as the resin-made label is wound around an outer circumference of a mandrel, heating and welding the rear end portion of the resin-made label, mounting the cylinder-shaped resin-made label on a vessel after removal from the mandrel, and heating and shrinking the resin-made label.
- According to a fifth aspect which is not part of the invention, there is provided a resin-label mounting device including a conveying drum which holds and conveys a resin-made label; a glue-applying unit which applies glue to a rear end portion of the resin-made label held by the conveying drum; a vessel base on which a supplied vessel is placed; a rotating unit which rotates the vessel base; and a heating and shrinking unit which heats and shrinks the resin-made label mounted on the vessel, the resin-made label being wound around the vessel, a rear end portion of the resin-made label overlapping and being bonded to a front end portion of the resin-made label, and the resin-made label then being heated and shrunk to be mounted on the vessel; wherein a heating unit, which is in contact with the rear end portion of the resin-made label and which heats the contacted portion, is provided, a temperature of the heating unit being set higher than a temperature of the heating and shrinking unit, the contact occurring for a shorter period of time than a period of time that would be necessary to weld the resin-made label, so that the rear end portion of the resin-made label is heated and cured.
- According to a sixth aspect which is not part of the invention, there is provided a resin-label mounting device including a conveying drum which holds and conveys a resin-made label; a glue-applying unit which applies glue to a rear end portion of the resin-made label held by the conveying drum; a vessel base on which a supplied vessel is placed; a rotating unit which rotates the vessel base; and a heating and shrinking unit which heats and shrinks the resin-made label mounted on the vessel, the resin-made label being wound around the vessel, a rear end portion of the resin-made label overlapping and bonded to a front end portion of the resin-made label, and the resin-made label then being heated and shrunk to be mounted on the vessel; wherein a heating unit, which is in contact with the rear end portion of the cylinder-shaped resin-made label and which heats and welds the contacted portion, is provided.
- According to a seventh aspect which is not part of the invention, there is provided a resin-label mounting method which includes steps of applying glue to a rear end portion of a resin-made label, forming the resin-made label into a cylindrical shape in which the rear end portion overlaps a front end portion as the resin-made label is wound around an outer circumference of a vessel, heating the rear end portion of the resin-made label, and heating and shrinking the resin-made label; the heating of the rear end portion of the label being performed at a higher temperature than a temperature of the heating and shrinking of the label and for a shorter period of time than a period of time that would be necessary to weld the resin-made label, so that the rear end portion of the resin-made label is heated and cured.
- According to an eighth aspect which is not part of the invention, there is provided a resin-label mounting method which includes steps of applying glue to a rear end portion of a resin-made label, forming the resin-made label into a cylindrical shape in which the rear end portion overlaps a front end portion as the resin-made label is wound around an outer circumference of a vessel, heating and welding the rear end portion of the resin-made label, and heating and shrinking the resin-made label.
- According to a ninth aspect which is not part of the invention, there is provided a vessel on which a resin-made label is mounted, the resin-made label being formed into a cylindrical shape in which glue applied to a rear end portion of the resin-made label overlaps and is bonded to a front end portion of the resin-made label, having the rear end portion heated and cured, and subsequently being heated and shrunk at a lower temperature than the heating temperature for curing.
- According to a tenth aspect which is not part of the invention, there is provided a vessel on which a resin-made label is mounted, the resin-made label being formed into a cylindrical shape in which glue applied to a rear end portion of the resin-made label overlaps and is bonded to a front end portion of the resin-made label, having the rear end portion heated and welded, and subsequently being heated and shrunk.
- According to the resin-label mounting device and the resin-label mounting method of the present invention, a heating unit is in contact with a rear end portion of a resin-made label for a shorter period of time than a period of time in which the resin-made label is welded at a higher temperature than a heating temperature of a heating-welding unit, so that a terminus thereof is cured. Accordingly, there is an advantage that the terminus of the resin-made label to which glue is not applied is prevented from being deformed when the resin-made label mounted on a vessel in a post-labeling process is heated and shrunk to provide better appearance as a product. Further, there is an advantage that the rear end of the label can be bonded reliably regardless of viscosity of glue while providing excellent appearance as a product with less visible glue print even when the applied glue varies in thickness. Furthermore, there is an advantage that the appearance as a product can be improved because the vessel on which the heated and shrunk resin-made label is mounted is prevented from being deformed when the resin-made label is heated and shrunk.
-
-
FIG. 1 is a plan view schematically illustrating the overall arrangement of a resin-label mounting device (first embodiment). -
FIG. 2 is a vertical sectional view of a label conveying drum and a glue applying unit. -
FIG. 3 is a horizontal sectional view illustrating enlarged main portions of the label conveying drum and the glue applying unit. -
FIG. 4 is a perspective view of a hot-melt coating head which is arranged at the glue applying unit. -
FIG. 5 is a vertical sectional view of a vessel conveying device and a heating unit. -
FIG. 6 is a plan view of a picker. -
FIG. 7(a) is a plan view of the heating unit andFIG. 7(b) is a vertical sectional view of the heating unit. -
FIG. 8 illustrates sequential operation of the resin-label mounting device. -
FIG. 9(a) is an explanatory view illustrating a state that a rear end portion of a resin-made label is heated by the heating unit andFIG. 9(b) is an explanatory view illustrating a state of the resin-made label after being heated by the heating unit. -
FIG. 10(a) is a plan view illustrating a state that glue is applied to a rear end portion of a resin-made label,FIG. 10(b) is an explanatory view illustrating a state that the rear end portion is bonded to a front end portion as being overlapped thereon, andFIG. 10(c) is an explanatory view illustrating a state after a heating-shrinking process is performed. -
- 2:
- resin-made label
- 2a:
- rear end portion of resin-made label
- 2b:
- front end portion of resin-made label
- 10:
- conveying drum
- 14:
- glue applying unit
- 26:
- rotating body
- 28:
- mandrel
- 34:
- heating-shrinking unit (shrink tunnel)
- 80:
- vessel base
- 90:
- driving unit (servomotor)
- 106:
- mounting unit (picker)
- 146:
- heating unit
- A plurality of label-holding portions are arranged on an outer circumferential face of a label-conveying drum at even intervals. A resin-made label cut by a cutter to have a predetermined length is transferred to and held by each label-holding portion. Glue is applied by a glue-applying unit to a rear end portion of the resin-made label, which is held by the label-holding portion. Here, there remains an area at the terminus of the rear end portion to which glue is not applied. When the resin-made label with glue applied arrives at the vessel-conveying unit, a vessel is supplied onto a vessel base which is arranged at the lower side of a rotating body of the vessel-conveying unit, while the resin-made label is transferred to a mandrel which is arranged above the vessel. First, the front end portion is attached to and held by the mandrel, so that the resin-made label is wound around the mandrel owing to a revolution (orbit) of the conveying drum and the rotating body of the vessel-conveying unit and rotation of the mandrel. Then, in a state that the rear end portion of the resin-made label overlaps the front end portion, bonding is performed with the glue. After the resin-made label is formed into a cylindrical shape from being wound around the mandrel, rotation of the mandrel is discontinued by a rotating unit for rotating (spinning) the mandrel, so that the overlapped portion between the rear end portion and the front end portion of the resin-made label is oriented outward in the radial direction of the rotating body of the vessel-conveying unit. An area (terminus) of the rear end portion of the resin-made label to which glue is not applied is in a partially detached state without being bonded to the front end portion. A heater is arranged along a conveyance passage of the mandrel due to the rotating body so as to heat the overlapped portion of the resin-made label at a higher temperature than a temperature for heating and shrinking in a shrink process to be performed later, and for a shorter period of time than a period of time that would be necessary to weld the resin-made label. The terminus of the rear end portion of the resin-made label to which glue is not applied is cured by heating with the heater. The terminus is prevented from being curled or deformed in other ways when the vessel affixed with the cylinder-shaped label is heated and shrunk as it is introduced into a shrink tunnel in a post-labeling process. Thus, improving the appearance of a product is achieved.
- In the following, the present invention will be described based on embodiments illustrated in the drawings. First, an overall configuration of a resin-label mounting device will be briefly described with reference to
FIG. 1 . A belt-shapedlabel 2 having a predetermined width is wound into a roll shape and is supported by a roller stand (not illustrated). The belt-shapedlabel 2 is drawn from the roller stand, fed through a plurality ofrollers 4 to acutter 6 consisting of a pair of rotatingmembers cutter 6. The resin-madelabel 2 cut to a predetermined length by thecutter 6 is transferred to a label-conveyingdrum 10 at a label-transfer position T via atransfer drum 8. - A plurality (in this embodiment, four) of label-holding
portions 12 are arranged equally spaced on an outer circumferential face of the label-conveyingdrum 10 in the circumferential direction. Each of the label-holdingportions 12 holds and rotationally conveys anindividual label 2 one by one. A glue-applyingunit 14 is arranged outside a label conveyance path downstream from the label transfer position T of the conveyingdrum 10 from thetransfer drum 8. According to theglue applying unit 14, glue ejected from a later-described ejection port is applied to a predetermined segment of thelabel 2, which is held by the label-holdingportion 12 of the conveyingdrum 10. The glue-appliedlabel 2 is wound, at a label transfer position S, around an outer circumferential face of a mandrel 28 (seeFIG. 1 andFIG. 5 which is described later) which is rotated by a vessel-conveyingdevice 16, and is formed into a tubular shape with a front end portion and a rear end portion bonded thereof. - Meanwhile, a
vessel 18 on which the tube-shaped resin-madelabel 2 is to be mounted is conveyed by asupply conveyor 20 and is transferred to asupply star wheel 24 while being separated by aninfeed screw 22 at predetermined intervals. Thesupply star wheel 24 rotationally conveys and supplies the receivedvessel 18 to a rotary-type vessel-conveyingdevice 16. At the lower side of arotating body 26, the vessel-conveyingdevice 16 rotationally conveys thevessel 18 supplied from theinlet star wheel 24. At the upper side of therotating body 26, themandrel 28 winds the resin-madelabel 2 received from the conveyingdrum 10 and forms the tube-shapedlabel 2. The formed tube-shapedlabel 2 is detached from themandrel 28 and mounted on thevessel 18. Thevessel 18 with the tube-shaped resin-madelabel 2 mounted is transferred to anejection star wheel 30 after being rotationally conveyed by the vessel-conveyingdevice 16 and ejected onto anejection conveyor 32. Thevessel 18 is conveyed into asubsequent shrink tunnel 34 by theejection conveyor 32 and is heated for a predetermined period of time at a predetermined temperature. Owing to the heating, the tube-shapedlabel 2 is shrunk and affixed to an outer face of thevessel 18. - Next, a configuration of the label-conveying
drum 10 will be described with reference toFIG. 2 . The conveyingdrum 10 is rotatably positioned on abase plate 36. Anupright support cylinder 38 is fixed on thebase plate 36. An uprightrotary shaft 44 is rotatably supported via upper andlower ball bearings support cylinder 38. Acylindrical member 46 is fitted to therotary shaft 44 on an upper outer circumferential face thereof extending upward from thesupport cylinder 38. Thecylindrical member 46 is joined to an outer face of therotary shaft 44 with a joint such as a key, so that its height can be adjusted with a vertical movement while being rotated integrally with therotary shaft 44. Further, a cylinder-shapedcover 48 is fixed to an outer circumference of thecylindrical member 46. Furthermore, acap 50 is fixed to an upper end thereof so as to be rotated integrally with therotary shaft 44 and thecylindrical member 46. - A circular plate (hereinafter, called a fixed plate) 52 which is horizontally fixed via a supporting column (not illustrated) or the like is arranged approximately at the same height as a lower end part of the
cylindrical member 46. Aball bearing 54 is arranged between an outer circumference of the lower end part of thecylindrical member 46 and an inner circumferential face of the fixedplate 52. Theball bearing 54 connects the fixedplate 52 and thecylindrical member 46, which rotates with therotary shaft 44. A ring-shapedslide member 56 is fixed on an upper face of the outer circumferential part of the fixedplate 52. A later-described vacuum passage for the fixed side is formed at the fixedplate 52 and the ring-shapedslide member 56. - A
flange 48a is formed at a lower end of the cylinder-shapedcover 48, which is fixed to an outer circumference of an upper part of therotary shaft 44. Acircular rotary plate 58 is fixed to a lower face of theflange 48a. Therotary plate 58 slides on an upper face of the ring-shapedslide member 56 when rotating. The conveyingdrum 10, which holds and rotatably conveys thelabel 2, is attached onto an outer circumferential part of therotary plate 58. When therotary plate 58 is rotated by rotation of therotary shaft 44, the conveyingdrum 10 is rotated integrally with therotary plate 58. Therotary shaft 44 is joined to a rotating unit (not illustrated) below thebase plate 36, and is rotated. - The conveying
drum 10 includes a ring-shaped bottom face 10a and a cylindrical wall face (hereinafter, called a cylindrical portion) 10b which is upright from an outer circumferential part of the bottom face 10a. The plurality of label-holdingportions 12 are arranged on an outer face of thecylindrical portion 10b of the conveyingdrum 10. In this embodiment, four of thelabel holding portions 12 are arranged on the outer circumferential face of thecylindrical portion 10b at even intervals in the circumferential direction (seeFIG. 1 ). Each of the label-holdingportions 12 includes a protrudedportion 12a for holding arear end portion 2a of the label 2 (seeFIGs. 3 and10a )). When viewing the protrudedportion 12a arranged at the rear side in the rotation direction of the label-holdingportion 12 from the upper side, an upper face 12aa is shorter than a bottom face 12ab, a side face 12ac at the front side in the rotation direction is slanted, and a side face 12ad at the rear side is approximately linear (being linear in the radial direction). Further, the upper face 12aa is formed into an arc shape that is coaxial with an arc (matching the outer circumferential face of the conveying drum 10) of the bottom face 12ab. - An arc-shaped groove 52a is formed at a portion of the upper face of the fixed
plate 52 where theslide member 56 is fixed, so that vacuum is introduced via apipe 60 which is connected to the lower face side. A number of vertically penetratingholes 56a are formed in the ring-shapedslide member 56, which is fixed on the fixedplate 52, covering a range of the arc-shaped groove 52a that overlaps with the arc-shaped groove 52a of the fixedplate 52. The arc-shaped groove 52a and the penetratingholes 56a are formed in a range from a slightly upstream position of the transfer position T (seeFIG. 1 ) where the conveyingdrum 10 receives thelabel 2 from thetransfer drum 8, to the transfer position S where thelabel 2 held by thelabel holding portion 12 is attached to themandrel 28. - Meanwhile, in the upright
cylindrical portion 10b of the conveyingdrum 10, a plurality ofsuction holes 10e (seeFIG. 2 , omitted inFIG. 3 ) that are open to the outer face are formed in the wall face except where the protrudedportions 12a are arranged at the rear side of the label-holdingportions 12. The suction holes 10e are connected to vacuum introduction holes 58b which opens to the lower face of therotary plate 58 via avertical passage 10c which is formed in thecylindrical portion 10b of the conveyingdrum 10, aradial passage 10d which is formed in the bottom portion 10a, apassage 58a which is formed in therotary plate 58 and connected to theradial passage 10d, and the like. Here, thesuction holes 10e are formed in the protrudedportions 12a as well. In this embodiment, thesuction holes 10e are formed so as to be open to a range other than a range where hot-melt is applied. - When the conveying
drum 10 is rotated along with rotation of therotary shaft 44, thelabel 2 can be attached, due to a vacuum forced in thesuction hole 10e, to a section of thecylindrical portion 10b where thevacuum introduction port 58b of therotary plate 58 communicating with eachsuction port 10e overlaps with the penetratinghole 56a which is formed in theslide member 56 on the fixed side. Further, when the vacuum introduction port 56b is rotated and arrives at the label transfer position S, the vacuum introduction port 56b is deviated from the penetratinghole 56a of theslide member 56 and the arc-shaped groove 52a of the fixedplate 52, and vacuum is disconnected. Then, the heldlabel 2 is released. In this embodiment, air is blown for a short period of time from thesuction hole 10e immediately after vacuum at thesuction hole 10e is disconnected, so that thelabel 2 is reliably transferred to themandrel 28. Therear end portion 2a of thelabel 2 is held by the protrudedportion 12a of the label-holdingportion 12, and the front side, which is the other end from therear end portion 2a, is held directly by the outer face of the conveyingdrum 10. - Further, the glue-applying
unit 14 is arranged at the outer side of thecylindrical portion 10b of the conveyingdrum 10 and oriented to face the conveyingdrum 10. The glue-applyingunit 14 is arranged upstream the label transfer position S where a label is transferred to themandrel 28 from thelabel holding portion 12 of the conveyingdrum 10. The glue-applyingunit 14 applies glue to a set area of therear end portion 2a of thelabel 2 held by the protrudedportion 12a where glue is to be applied. As illustrated inFIG. 2 , the glue-applyingunit 14 is attached onto anattachment base 62 via anair cylinder 64 so as to be capable of being advanced and retreated in the direction of the conveyingdrum 10 with an action of theair cylinder 64. - The glue-applying
unit 14 includes, on a side facing the conveyingdrum 10, a hot-melt coating head 66 in which anejection port 66a for ejecting glue (hot-melt) is formed (seeFIGs. 3 and 4 ). The hot-melt coating head 66 includes the verticallylong ejection port 66a whose length is slightly shorter than the width of the label 2 (a vertical length when held by thelabel holding portion 12 of the conveying drum 10). Theejection port 66a is connected to aglue reserve 14a which is arranged in a main body of the glue-applyingunit 14 via apassage 66b (seeFIG. 3 ) in the hot-melt coating head 66. Further, theglue reserve 14a is connected to a glue-supplying unit 68 (consisting of a reserve tank and a pump (not illustrated)) which is controlled by a control unit (seeFIG. 2 ). In this embodiment, theglue ejection port 66a is formed as a single lengthwise opening in the vertical direction. However, not limited to the above, the shape of theejection port 66a can be appropriately selected such that a number of small openings are arranged at even intervals, or one opening is formed only at a portion where glue is required to be applied, or the like. Here, shrink-enabled glue having high viscosity is used in the present embodiment. Accordingly, even if a label is pulled during shrinking, bonding can be firmly performed without deviation. - As illustrated in
FIGs. 3 and 4 , in the hot-melt coating head 66, a portion thereof which is closest to the label-conveyingdrum 10 is formed as a narrowflat face 66c and the vertically-long ejection port 66a is formed in the top end side of theflat face 66c. Oneside portion 66d of theflat face 66c where theejection port 66a is formed, more specifically the front side in the rotation direction (a side portion to which thelabel 2 held by thelabel holding portion 12 of the conveyingdrum 10 approaches), is formed as an arc-shaped face that curves smoothly into theflat face 66c. Further, the other side portion at the rear side in the rotation direction is formed of twoslanted faces drum 10. In particular, theslanted face 66e that continues from theejection port 66a is made to have a sharp angle to prevent glue from sticking thereto. As illustrated inFIG. 4 , the arc-shapedside portion 66d of the hot-melt coating head 66 can be in contact with the label in the vicinity of a portion connected to theflat face 66c, while theside portions label 2 at all. - A configuration of the vessel-conveying
device 16 will be described with reference toFIGs. 1 and5 . An upright center shaft 72 is arranged on abase 70. A cylindrical member 76 (hereinafter, called a rotating cylindrical member)is rotatably supported by the outer circumference thereof via upper andlower bearings 74. A horizontalrotating disc 78 is attached to the rotatingcylindrical member 76 approximately at the center in the vertical direction and is rotated integrally with the rotatingcylindrical member 76. A plurality ofvessel bases 80 are arranged, at even intervals in the circumferential direction, at an outer circumferential portion of the rotating disc 78 (hereinafter, called a lower rotating disc) which constitutes a lower portion of therotating body 26.Vessels 18 fed from theinlet star wheel 24 are placed sequentially on the vessel bases 80 and rotatably conveyed by the rotation of therotating body 26. - Two horizontal rotating discs (an upper
rotating disc 84 and a middle rotating disc 86) joined together above and below each other with anupright connecting member 82 are attached to an upper end of the rotatingcylindrical member 76 and are rotated integrally with the rotatingcylindrical member 76 and the lowerrotating disc 78. The rotatingbody 26 consisting of the rotatingcylindrical member 76, the threerotating discs gear 88 which is fixed to the outer circumference at the lower end of the rotatingcylindrical member 76. Themandrels 28 are rotatably supported, at even intervals in the circumferential direction, on a lower face side of an outer circumferential portion of the middlerotating disc 86. The positions of themandrels 28 and the vessel bases 80 are directly above and below one another and matching when viewed vertically, and are revolved (orbited) due to rotation of therotating body 26 so as to maintain their matching positions from the vertical point of reference. Themandrels 28 are rotated byservomotors 90 for mandrel rotation arranged on the upper face of the middlerotating disc 86. Theservomotors 90 for mandrel rotation are controlled by a control unit (not illustrated) for controlling such movements as rotation (spin), positioning, and the like for themandrels 28. - The
mandrels 28 are arranged at the same height as the conveyingdrum 10 which supplies the resin-madelabels 2. The resin-madelabel 2 is transferred to themandrel 28 which arrives at the position (label transfer position S) of the conveyingdrum 10 with rotation of therotating body 26. An outer diameter of themandrel 28 is slightly larger than an outer diameter of thevessel 18. A number of suction holes (not illustrated) are formed in themandrel 28 and oriented toward the outer facing side and connected to a vacuum source (not illustrated). Owing to suctioning through the suction holes, thelabel 2 can be attached to and held at the outer circumferential face thereof. - A lifting-lowering
shaft 94 with atop locator 92 fixed at a lower end thereof is inserted through a center portion of eachmandrel 28. Ajoint block 96 is attached to an upper end part of the lifting-loweringshaft 94. Further, aslider 98 is fixed to thejoint block 96 at an inner side in the radial direction of therotating body 26. Theslider 98 is engaged with avertical guide rail 100, which is attached to the upperrotating disc 84, and an outer facing side of a ring-shapedplate 99 joined to a lower side of the upperrotating disc 84 via a connectingmember 82, so as to guide lifting and lowering of the lifting-loweringshaft 94 and thetop locator 92. Further, acam follower 102 is attached to thejoint block 96 at a face that is oriented toward the outer side of therotating body 26 and engaged with acam groove 104a of a ring-shapedcam 104, which is fixed to the outer side of therotating body 26. In accordance with the shape of thecam groove 104a, thetop locator 92 and the lifting-loweringshaft 94 are lifted and lowered. - There is provided a
picker 106 which is capable of being lifted and lowered between themandrel 28 on the upper side and thevessel 18 placed on thevessel base 80 on the lower side. Thepicker 106 is attached to an upper end of a lifting-loweringrod 108 which penetrates vertically through the lowerrotating disc 78 via ahorizontal attachment plate 110. Ajoint block 112 is fixed to a lower end of the lifting-loweringrod 108. A slider 114 is attached to an inner side of thejoint block 112 in the radial direction of therotating body 26. Further, acam follower 116 is attached to the outer side in the radial direction thereof. Thecam follower 116 is engaged with a ring-shapedplate cam 120 which is attached to a fixingbase 118 at the outer side of the vessel-conveyingdevice 16. Thecam follower 116 is lifted and lowered in accordance with a shape of theplate cam 120 so as to lift and lower thepicker 106 along with the lifting-loweringrod 108. - Two horizontal ring-shaped
plates rotating disc 78 via connectingmembers 122 formed in the vertical direction. A vertically arrangedguide rail 128 is attached to outer faces of the ring-shapedplates guide rail 128 and guides lifting and lowering of the lifting-loweringrod 108 and thepicker 106. Further, thepicker 106 is configured to be capable of being opened and closed, and holds thelabel 2 wound around themandrel 28 when closed. Thepicker 106 includes a pair of holdingmembers 132, 132 (seeFIG. 6 ) attached to distal ends of twoarms arms rods rotating discs 78.Gears rods rod 134 is rotated, therods arms members lever 138 is fixed to onerod 134. Acam follower 140 is attached to a distal end of thelever 138. A picker open-close cam 142 is arranged on a fixingbase 118 located on the outside of therotating body 26. Thelever 138 is swung by the open-close cam 142, so that therod 134 and thegear 136 are rotated and both the holdingmembers picker 106 are opened and closed. - As illustrated in
FIG. 6 , thepicker 106 is distanced from the outer face of the mandrel 28 (or the vessel 18) when opened. When closed, thepicker 106 forms a circular shape with an inner diameter being slightly larger than an outer diameter of themandrel 28 and thevessel 18. The center of thepicker 106 in the closed state, the axis center of themandrel 28 on the upper side, and the axis center of thevessel 18 placed on thevessel base 80 on the lower side are positioned on the same axis line. Eachpicker 106 is connected to a vacuum source (not illustrated) via avacuum tube 144. An outer facing side of the cylinder-shaped resin-madelabel 2 wound around themandrel 28 can be attached thereto with asuction hole 132a formed in an inner face side thereof. - A
heating unit 146 is arranged downstream of the vessel-conveyingdevice 16 from the position S where thelabel 2 is transferred from the conveyingdrum 10. Therear end portion 2a of the resin-madelabel 2, overlapping thefront end portion 2b when it is wound to themandrel 28, is heated by theheating unit 146, so that a terminus 2aa to which glue is not applied is cured (seeFIGs. 9(a) and 9(b) ). A configuration of theheating unit 146 will be described with reference toFIGs. 5 ,7(a), and 7(b) . A fixingbase 118 is arranged outside the rotatingbody 26 and theheating unit 146 is arranged above the fixingbase 118. Avertical center shaft 154 is rotatably supported between a lower supportingplate 150 and an upper supportingplate 152, which are horizontally supported by an upright supportingcolumn 148 that is arranged on the fixingbase 118. Aservomotor 156 for driving the heating unit is attached to a lower facing side of the lower supportingplate 150. The driving force of theservomotor 156 is transmitted to amiddle shaft 164 via apulley 158, abelt 160, and apulley 162. Further, the rotation of theservomotor 156 is transmitted to thecenter shaft 154 owing to engagement between agear 166 fixed to themiddle shaft 164 and agear 168 arranged at a lower end of thecenter shaft 154. - Horizontal cross-shaped
rotating bodies center shaft 154 at upper and lower parts thereof, and rotated integrally therewith. Leadingend portions 170a of the upper and lower cross-shapedrotating bodies joint pin 172. One end of a vertical plate-shapedmember 174 is joined to eachjoint pin 172 in a swingable manner. Further, aheater 176 is fixed to the other end (swinging end) of each vertical plate-shapedmember 174. In the present embodiment, theheaters 176 are arranged at four locations of leadingend parts 170a of the cross-shapedrotating bodies cam follower 178 is attached to a lower end of the leading end (the end part to which theheater 176 is fixed) of the vertical plate-shapedmember 174. Ahorizontal cam plate 180 is arranged below the cross-shapedrotating bodies cam plate 180. Thecam follower 178 is engaged with the cam groove 180a. In accordance to the shape of the cam groove 180a, theheater 176 can move as in a predetermined range to allow for an overlapped portion between therear end portion 2a and thefront end portion 2b of the resin-madelabel 2 that is wound to themandrel 28. Theheater 176 of theheating unit 146 is arranged at the same height as themandrel 28, which is arranged on therotating body 26 and has a flat face which is in contact with therear end portion 2a of the resin-madelabel 2. In the device of the present embodiment, the resin-madelabel 2, which is formed into a cylindrical shape by being wound around themandrel 28 with bothend portions shrink tunnel 34 after being mounted on thevessel 18, thereby shrinking the resin-madelabel 2 and affixing it to the outer face of thevessel 18. In the case that the heating temperature at theshrink tunnel 34 is 90°C, for example, theheater 176 is configured to heat at a higher temperature than the above (for example, 180°C). Further, contact between them occurs for a shorter period of time than a period of time that would be necessary to weld the resin-madelabel 2. - An operation of the resin-label mounting device according to the abovementioned configuration will be described. An elongated resin-made
label 2 drawn from the roller label held by a label stand (not illustrated) is fed to thecutter 6 including the pair of rotatingmembers rollers 4 and cut to have the predetermined length corresponding to the size of thevessel 18. Thecut label 2 is transferred to a label-conveyingdrum 10 at the label transfer position T via thetransfer drum 8. The label-holdingportion 12 having the protrudedportion 12a, which holds therear end portion 2a of the resin-madelabel 2, is arranged on the conveyingdrum 10. First, thefront end portion 2b of the cut resin-madelabel 2 is attached to the outer face of the conveyingdrum 10. Subsequently, after a middle portion continuing from thefront end portion 2b is attached and held, therear end portion 2a of the resin-madelabel 2 is placed on the protrudedportion 12a and held by suction from thesuction hole 10e, which are open everywhere except for a range other than a range to which hot-melt is applied. - The resin-made
label 2 held by the label-holdingportion 12 of the conveyingdrum 10 is conveyed to the next position of the glue-applyingunit 14 due to rotation of the conveyingdrum 10. When the labeler is not operated, the glue-applyingunit 14 is pulled back by theair cylinder 64 so that theejection port 66a of the hot-melt coating head 66 is not in contact with the conveyingdrum 10 side. During operation, the glue-applyingunit 14 is advanced toward the conveyingdrum 10 so that theflat face 66c of the hot-melt coating head 66 on which theejection port 66a is formed makes contact with a portion of the resin-madelabel 2 which is held by the protrudedportion 12a of thelabel holding portion 12. - Since the protruded
portion 12a which holds therear end portion 2a of the resin-madelabel 2 has the slanted face 12ac at the front side in the rotation direction, the resin-madelabel 2 on the protrudedportion 12a of the rotating conveyingdrum 10 and theflat face 66c of the hot-melt coating head 66 smoothly comes into contact without causing any interference. - When the
flat face 66c of the hot-melt coating head 66 comes into contact with the resin-madelabel 2, glue is supplied to the glue-applyingunit 14 from the glue-supplyingunit 68 in accordance with a signal of the control unit and applied to the resin-madelabel 2 as it is ejected from theejection port 66a of the hot-melt coating head 66. The start timing of the glue application is determined in accordance with a position signal of the conveying drum 10 (a pulse signal of an encoder). When the arrival of the protrudedportion 12a, which holds therear end portion 2a of the resin-madelabel 2, is detected at a predetermined position, the ejection of glue is started. Thereafter, the ejection of glue is stopped after a predetermined period of time has elapsed as measured with a timer. In the case that a width of the resin-madelabel 2 is large, glue is ejected for a longer period of time corresponding thereto. In the present embodiment, the ejection of glue is not performed for a period of time required to apply glue to the total width (width in the rotation direction). The ejection is performed for a period of time slightly shorter than the above period of time and then stopped. Glue is applied to the remaining portion of the required application width so that glue remaining in theejection port 66a is wiped away by the resin-madelabel 2. Thus, glue is not applied to the terminus 2aa of therear end portion 2a of the resin-madelabel 2, so that a range remains that is free of glue (seeFIG. 10(a) ). - A process in which the resin-made
label 2 held by the label-holdingportion 12 of the conveyingdrum 10 is mounted on thevessel 18 via themandrel 28 will be described with reference to the drawings of the above andFIG. 7 . - In the
rotating body 26 of the vessel-conveyingdevice 16, the vessel bases 80 are arranged on therotating disc 78 at the lower side at even intervals in the circumferential direction. Avessels 18 is supplied from theinlet star wheel 24 to each of the vessel bases 80. Thevessels 18 are conveyed by thesupply conveyor 20 and separated to form predetermined intervals by theinfeed screw 22, and then, are supplied onto the vessel bases 80 of the vessel-conveying device 16 (seeFIG. 8(a1) ) via theinlet star wheel 24. Thevessel base 80 to which thevessel 18 is supplied is rotationally conveyed with rotation of therotating body 26. After thevessel 18 is supplied onto thevessel base 80, the lifting-loweringrod 94 and thetop locator 92 are lowered by the top locator lifting-loweringcam 104, so that thevessel 18 is stably held with a head part thereof held by the top locator 92 (seeFIG. 8(a2) ). Subsequently, thevessel 18 placed on thevessel base 80 arrives at the transfer position S where the resin-madelabel 2 is transferred from the conveyingdrum 10 to themandrel 28 on the upper side. A range in which vessels are supplied is denoted by range A inFIGs. 1 and8 . While thevessel 18 is being supplied onto thevessel base 80, thepicker 106 is lifted and positioned around themandrel 28. Further, thepicker 106 is opened. - When the
vessel base 80 with thevessel 18 supplied arrives at the position (label-transfer position S) facing the conveyingdrum 10 with rotation of therotating body 26, the resin-madelabel 2 held by the label-holdingportion 12 of the conveyingdrum 10 is transferred to themandrel 28, which is positioned above thevessel 18. Thevessel conveying device 16 and the conveyingdrum 10 are driven in a synchronized manner. When themandrel 28 of the vessel-conveyingdevice 16 and the label-holdingportion 12 of the conveyingdrum 10 arrive at the label-transfer position S, thefront end portion 2b of the resin-madelabel 2, which is held by the label-holdingportion 12, makes contact with the outer face of themandrel 28, which is revolutionarily moved (orbited) by rotation of therotating body 26. Themandrel 28 is rotated (spun) by driving of theservomotor 90 and performs suctioning through the suction holes in the outer face. When thefront end portion 2b of the resin-madelabel 2 is in contact with the outer face, thefront end portion 2b is firstly attached thereto and the resin-madelabel 2 is wound around themandrel 28 owing to rotation of the conveyingdrum 10 and revolution and spinning of themandrel 28. - The resin-made
label 2 with thefront end portion 2b held by suction to themandrel 28 is thereby wound and the conveyingdrum 10 discontinues suctioning of the label-holdingportion 12. The resin-madelabel 2 is cut to have a length larger than the circumference of themandrel 28. Therear end portion 2a overlaps the previously attachedfront end portion 2b and is bonded onto thefront end portion 2b with glue applied to therear end portion 2a of the resin-madelabel 2 by the glue-applying unit 14 (seeFIG. 8(b) ). A range for label winding is denoted by range B inFIGs. 1 and8 . As described above, since the glue applied to therear end portion 2a of the resin-madelabel 2 is not applied to the terminus 2aa (seeFIG. 10(a) ), the terminus 2aa of therear end portion 2a is in a partially detached without being bonded to thefront end portion 2b (seeFIG. 10(b) ). Here, at the time when the resin-madelabel 2 is to be transferred from the conveyingdrum 10 to themandrel 28, thepicker 106 is lowered below themandrel 28 by thecam 120 for picker lifting-lowering, as illustrated on the left side ofFIG. 5 andFIG. 8(b) . - The
mandrel 28, which holds therear end portion 2a of the resin-madelabel 2 as it overlaps thefront end portion 2b, discontinues rotation (spin) when transfer of the resin-madelabel 2 is completed. At that time, the rotation is stopped in a state that the overlapped portion of the resin-madelabel 2 is oriented approximately outside in the radial direction of therotating body 26. When themandrel 28, which holds the resin-madelabel 2 in the above state, approaches the position of theheating unit 146, theheater 176 momentarily comes into contact, as illustrated inFIG. 9(a) , with the entirerear end portion 2a (a portion which is bonded to thefront end portion 2b with glue while the partially detached terminus 2aa is not bonded because glue is not applied) (seeFIG. 8(c) ) in accordance with the shape of the cam groove 180a which is illustrated inFIG. 7(a) . Theheater 176 momentarily makes contact only for a period of time (for example, 0.1 second) in which both end portions of the resin-madelabel 2 are not welded by, a higher temperature than the heating temperature in theshrink tunnel 34 in a post-labeling process (for example, the heating temperature with theheater 176 is 180°C when the heating temperature at theshrink tunnel 34 is 90°C). Consequently, the entirerear end portion 2a of the resin-madelabel 2, including the terminus 2aa to which glue is not applied, is cured. A range for heating with theheater 176 is denoted by range C inFIGs. 1 and8 .FIG. 9(b) illustrates a state after the terminus 2aa is cured. - The cylinder-shaped
label 2 is formed by bonding therear end portion 2a and thefront end portion 2b of the resin-madelabel 2, which is wound around themandrel 28 in a state that therear end portion 2a overlaps thefront end portion 2b. Further, after the unbonded terminus 2aa of therear end portion 2a is cured, thepicker 106 is lifted to the height of themandrel 28 while being kept in an opened state. Next, thepicker 106, which is lifted to the lower outer circumference of themandrel 28, makes contact with the outer face of the cylinder-shaped resin-madelabel 2, which is wound around themandrel 28, by closing both holdingmembers 132, 132 (seeFIG. 8(d) ) by the action of the picker open-close cam 142. Vacuum is applied to thesuction hole 132a at the inner face of thepicker 106 in the above state and vacuum at themandrel 28 is released, so that the resin-madelabel 2 is affixed to and held by thepicker 106. A range for affixing and holding the resin-madelabel 2 by thepicker 106 is denoted by range D inFIGs. 1 and8 . - Subsequently, the
picker 106, which holds the resin-madelabel 2, is lowered to the position of thevessel 18 at the lower side by the picker lifting-loweringcam 120. When thepicker 106 is lowered, the cylinder-shaped resin-madelabel 2 fitted around themandrel 28 is slipped from themandrel 28 and mounted to the circumference of thevessel 18 on the lower side while being kept in a cylindrical shape (seeFIG. 8(e) ). A range for mounting the resin-madelabel 2 on thevessel 18 is denoted by range E inFIGs. 1 and8 . - After the cylinder-shaped resin-made
label 2, which is wound around themandrel 28, is removed and mounted on the outer circumferential face of thevessel 18, which is positioned at the lower side, by thepicker 106, vacuum at thepicker 106 is released, both the holdingportions 132 are opened by the picker open-close cam 142, and thepicker 106 is lifted to a height where interference with thevessel 18 is prevented (seeFIG. 8(f) ). A range for opening and lifting of thepicker 106 is denoted by range F inFIGs. 1 and8 . - After the
picker 106 is opened and lifted to the circumference of themandrel 28, thetop locator 92 is lifted (seeFIG. 8(g1) ). Then, thevessel 18 on which the resin-madelabel 2 is mounted is discharged onto theejection conveyor 32 via the outlet star wheel 30 (seeFIG. 8(g2) ). A range for lifting thetop locator 92 and ejecting the vessel is denoted by range G inFIGs. 1 and8 . - The
vessel 18 conveyed by theejection conveyor 32 is introduced into theshrink tunnel 34, which is arranged on theconveyor 32. In theshrink tunnel 34, heating is performed for a predetermined period of time (for example, 3 seconds) at a temperature (for example, 90°C) below the temperature setting of theheater 176, so that the resin-madelabel 2 mounted on thevessel 18 is shrunk. - Here, in the present embodiment, the
heater 176 is in contact for an extremely short period of time with therear end portion 2a of the resin-madelabel 2 including the terminus 2aa, which is an area to which glue is not applied, so that therear end portion 2a is cured. The unit to apply glue is not limited to the hot-melt coating head. It is also possible to apply glue even to the terminus of therear end portion 2a of the resin-madelabel 2 using another applying unit such as an applying roller having a roller with glue adhered to the entire circumference in contact with the resin-madelabel 2 and to heat and cure the area to which glue is applied. - Further, in the present embodiment, curing is performed by heating the
rear end portion 2a of the resin-madelabel 2 wound around eachmandrel 28 with theheating unit 146 arranged at one position along a movement passage of themandrel 28. However, when a heater is arranged corresponding to each mandrel, it is possible to perform a high speed operation. Furthermore, in the present embodiment, themandrel 28 is arranged above thevessel base 80. However, it is not limited to arrangement above thevessel base 80; it is also possible to be arranged below thevessel base 80.
Claims (2)
- A resin-label mounting device, comprising:a conveying drum (10) which holds and conveys a resin-made label (2);a glue-applying unit (14) which applies glue to a rear end portion (2a) of the resin-made label (2) held by the conveying drum (10);a plurality of mandrels (28) which are arranged on a rotating body (26), each mandrel (28) winding the resin-made label (2) upon receiving from the conveying drum (10), forming a cylindrical shape with a rear end portion (2a) of the resin-made label (2) overlapping and bonded to a front end portion (2b), and using suction to hold the resin-made label (2);a drive unit (90) which causes each of the mandrels (28) to be spun;a vessel base (80), which is arranged to correspond to each mandrel (28), and on which a supplied vessel is placed;a mounting unit (106) which mounts the resin-made label (2) on the vessel after removal from the mandrel (26) ;a heating and shrinking unit (34) which heats and shrinks the resin-made label (2) mounted on the vessel; and a heating unit (146), characterized in that the heating unit (146) which is in contact with the rear end portion (2a) of the cylinder-shaped resin-made label (2) formed by the mandrel (26) and which heats the contacted portion before the resin-made label mounted on the vessel is shrunk by the heating and shrinking unit (34), is set at a temperature higher than a temperature of the heating and shrinking unit (34), and the contact occurs for a shorter period of time than a period of time that would be necessary to weld the resin-made label (2), so that the rear end portion (2a) of the resin-made label (2) is heated and cured.
- A resin-label mounting method, comprising steps of:applying glue to a rear end portion (2a) of a resin-made label (2);forming the resin-made label (2) into a cylindrical shape in which the rear end portion (2a) of the resin-made label (2) overlaps a front end portion as the resin-made label (2) is wound around the outer circumference of a mandrel (26);heating the rear end portion (2a) of the resin-made label (2) by means of a heating unit (146); mounting the cylinder-shaped resin-made label (2) on a vessel after removal from the mandrel (26); andheating and shrinking the resin-made label (2); characterized by the heating of the rear end portion (2a) of the resin-made label (2) being performed by contacting the rear end portion (2a) of the resin-made label (2) with the heating unit (146) at a higher temperature than a temperature of the heating and shrinking of the resin-made label and for a shorter period of time than a period of time that would be necessary to weld, so that the rear end portion of the resin-made label is heated and cured.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011248699A JP6003043B2 (en) | 2011-11-14 | 2011-11-14 | Resin label mounting apparatus and resin label mounting method |
PCT/JP2012/077356 WO2013073348A1 (en) | 2011-11-14 | 2012-10-23 | Resin-label-mounting device, resin-label-mounting method, and resin-label-mounted vessel |
Publications (3)
Publication Number | Publication Date |
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EP2781460A1 EP2781460A1 (en) | 2014-09-24 |
EP2781460A4 EP2781460A4 (en) | 2016-03-16 |
EP2781460B1 true EP2781460B1 (en) | 2018-08-22 |
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Application Number | Title | Priority Date | Filing Date |
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EP12849181.8A Active EP2781460B1 (en) | 2011-11-14 | 2012-10-23 | Resin-label-mounting device and resin-label-mounting method |
Country Status (3)
Country | Link |
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EP (1) | EP2781460B1 (en) |
JP (1) | JP6003043B2 (en) |
WO (1) | WO2013073348A1 (en) |
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DE102014218274A1 (en) * | 2014-09-12 | 2016-03-17 | BSH Hausgeräte GmbH | Domestic refrigerating appliance with a trained with integrated display unit operating element for operating a lid of a fresh food container |
JP6436830B2 (en) * | 2015-03-26 | 2018-12-12 | レンゴー株式会社 | Resin label mounting apparatus and resin label mounting method |
WO2019043967A1 (en) * | 2017-08-29 | 2019-03-07 | 株式会社フジシールインターナショナル | Label-mounting system |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995027613A1 (en) * | 1994-04-06 | 1995-10-19 | Gerro Plast Gmbh | Method and apparatus for producing a sleeve label and container with such sleeve label |
US7875143B2 (en) * | 2006-01-20 | 2011-01-25 | Gerroplast Gmbh | Method and apparatus for labeling containers |
JP5697005B2 (en) | 2008-02-27 | 2015-04-08 | シブヤマシナリー株式会社 | Label |
JP5293032B2 (en) * | 2008-09-16 | 2013-09-18 | シブヤマシナリー株式会社 | Label |
JP5381085B2 (en) * | 2008-12-25 | 2014-01-08 | 大日本印刷株式会社 | Wrapped shrink label, container with rolled shrink label, and method for producing them |
US20110154699A1 (en) * | 2009-08-03 | 2011-06-30 | Avery Dennison Corporation | Preprinted Roll-On Shrink-On Label |
IT1396835B1 (en) * | 2009-11-18 | 2012-12-14 | Sacmi Labelling S P A Ora Sacmi Verona S P A | PROCEDURE FOR THE PRODUCTION OF SLEEVE LABELS AND DEVICE FOR THEIR PRODUCTION. |
JP5434750B2 (en) * | 2010-03-31 | 2014-03-05 | シブヤマシナリー株式会社 | Labeler |
JP5658179B2 (en) * | 2011-02-01 | 2015-01-21 | レンゴー株式会社 | Heat shrinkable label |
-
2011
- 2011-11-14 JP JP2011248699A patent/JP6003043B2/en active Active
-
2012
- 2012-10-23 EP EP12849181.8A patent/EP2781460B1/en active Active
- 2012-10-23 WO PCT/JP2012/077356 patent/WO2013073348A1/en active Application Filing
Non-Patent Citations (1)
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Also Published As
Publication number | Publication date |
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WO2013073348A1 (en) | 2013-05-23 |
JP2013103739A (en) | 2013-05-30 |
EP2781460A1 (en) | 2014-09-24 |
JP6003043B2 (en) | 2016-10-05 |
EP2781460A4 (en) | 2016-03-16 |
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