JP2000229359A - Film sticking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film sticking device which can cement a film strongly to a metal can even at a high speed. SOLUTION: A label (heat-sensitive adhesive label made of a thin film) is stuck on the barrel part outside surface of an aluminum can C by a process in which the can C engaged with a mandrel 43 is conveyed to a sticking position P4 while being heated by radiation heaters 44, 45, and the can C is pressed to the label which is conveyed to the sticking position P4 while being stuck/held on the outside surface of a sticking drum 41, the can C with the label stuck at the sticking position P4 is conveyed to a can discharge position P6 while being pressed to a press plate 46a heated by the heater 46b of a guide member 46 arranged along the transfer route of the mandrel 43 after the sticking position P4 and being rotated so that the label is re-pressed to the can C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film sticking apparatus for transporting a metal can to a sticking position while heating the metal can, and sticking the heat-sensitive adhesive film conveyed to the sticking position to the heated metal can.

[0002]

2. Description of the Related Art As a film sticking apparatus for sticking a film on the outer peripheral surface of a body of a metal can such as an aluminum can or a steel can, there is a labeling apparatus as shown in FIG. The labeling device 70 cuts a long strip-shaped label-forming base material M made of a synthetic resin film into a predetermined length to produce a label L.
And a cutting / conveying means 71 including a rotary cutter 71a and a cutting / conveying roll 71b for conveying to a delivery position α, and a label L conveyed to the delivery position α by the cutting / conveying means 71 at the delivery position α. Affixing position β of label L while suction-holding on surface
And a mandrel that transports the metal can C from the can supply position γ to the can discharge position δ from the can supply position γ with the metal can C supplied at the can supply position γ inserted and inserted. 73, and the metal can C is heated during the transport from the can supply position γ to the application position β, so that the metal can C is applied at a predetermined temperature higher than the activation temperature of the heat-sensitive adhesive used for the label L. The temperature of the metal can C is raised to the temperature, and at the sticking position β, the heated metal can C is pressed against the label L sucked and held on the outer circumferential surface of the sticking drum 72 and rotated along the outer circumferential surface of the sticking drum 72 while rotating. By moving the label L by a predetermined distance, the label L is attached to the outer peripheral surface of the body of the metal can C.

[0003]

By the way, in the labeling apparatus 70 as described above, the label L is attached to the metal can C while pressing the outer peripheral surface of the body of the metal can C over the entire length of the label L at the attaching position β. In particular, in the case of a labeling device that is operated at high speed, a sufficient press contact time of the metal can C against the label L cannot be secured, and the label L is firmly adhered to the metal can C. There is a problem that you can not.

Further, in order to improve the adhesion failure of the label L to the metal can C due to the inability to secure a sufficient pressure contact time at the sticking position β, the sticking position β
It is conceivable to increase the temperature of the metal can C in the above or to increase the pressing force of the metal can C against the label L.
If the temperature of the metal can C is too high, the label L will be softened, and if the pressing force of the metal can C is too high, the mandrel 7
New problems such as hindering smooth driving of No. 3 will occur. Therefore, it is impossible to improve the adhesion failure of the label L only by the temperature and the pressing force of the metal can C, and in the case of a labeling device that is operated at a high speed, the adhesion strength of the label L cannot be sufficiently secured after all. is the current situation.

An object of the present invention is to provide a film sticking apparatus which can firmly bond a film to a metal can even when the film is stuck to the metal can at high speed.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention conveys a metal can inserted into a mandrel to a sticking position while heating the metal can, and conveys the metal can to the sticking position. In the film sticking apparatus for sticking the heat-sensitive adhesive film to the metal can, a pressurizing body is installed along a movement path of the mandrel after the sticking position, and the pressurizing body is used to stick the metal can at the sticking position. The applied film was pressed against the metal can.

In the film sticking apparatus constructed as described above, the film stuck on the metal can at the sticking position is pressed again to the metal can by the pressing body, so that the film sticking at the sticking position is performed. In this case, even if a bonding failure occurs, a sufficient bonding strength can be ensured by re-pressing by the pressing body thereafter.

[0008] In particular, in the film sticking apparatus according to the second aspect, in which a heating means for heating the pressurizing member is provided, poor adhesion occurs at the time of sticking the film at the sticking position. However, it is not always necessary to completely adhere the film to the metal can at the sticking position because the adhesion failure can be reliably eliminated by re-pressing with the heated pressurizing body. Therefore, it is possible to set the temperature of the metal can at the application position lower, and when the film is applied to the metal can, the waving state of the film surface generated due to the film being softened by the heat of the metal can is removed. It can be effectively prevented.

[0009]

Embodiments will be described below with reference to the drawings. A labeling device 1 which is an embodiment of the film sticking device shown in FIG. 1 cuts a long band-shaped label forming substrate M to which a heat-sensitive adhesive label (hereinafter, referred to as a label) of a predetermined length is continuously connected. While forming a label of a predetermined length by sequentially cutting at P1,
The label is sequentially attached so as to be wound around the outer peripheral surface of a body of an aluminum can (hereinafter, referred to as an aluminum can) C as an object to be attached, which is transported to a predetermined label attaching position P4. Yes, the label has a thickness of 12
The inner surface of a thin and rigid polyethylene terephthalate film of about μm is printed and coated with a heat-sensitive adhesive.

As shown in FIGS. 1, 2 and 5, this labeling apparatus 1 comprises a pair of feeding devices for continuously feeding a long label-forming substrate M wound in a roll to a cutting position P1. A cutting in which a label L is formed by successively cutting a supply roller 10 and a label forming substrate M supplied by the supply roller 10 at a predetermined cut pitch at a cutting position P1 while transporting the label forming substrate M to a first delivery position P2. Conveying means 2
0, a label affixing means 40 for affixing the label L to the outer peripheral surface of the body of the aluminum can C at the label affixing position P4, and the label L cut by the cutting and conveying means 20 from the label forming substrate M at the first delivery position. The delivery drum 30, which receives the sheet at P2 and transfers it to the label attaching means 40 at the second delivery position P3, the can supply means 50 for supplying the aluminum can C to the label attaching means 40, and the label L attached by the label attaching means 40. And a can discharging means 60 for discharging the obtained aluminum can C.

As shown in FIG. 2, the cutting and transporting means 20 sucks a rotary cutter 21 having a cutting blade 21a attached to the outer peripheral surface thereof, and a label-forming substrate M supplied by the feed roller 10 onto the outer peripheral surface. It holds and transports to the first delivery position P2, and also includes a cutting and transporting roll 22 that sequentially cuts the label-forming base material M into a predetermined length by cooperation with the rotary cutter 21.

As shown in FIG. 1, the cutting / conveying roll 22 is composed of a roll main body 23 driven to rotate by a driving means (not shown), and a fixing portion with which the roll main body 23 is slidably contacted. In the outer peripheral surface of the roll body 23, a plurality of through holes
a is formed, and the roll body 2 is
3, a suction groove 24a connected to suction means (not shown), which communicates with the through hole 23a from the cutting position P1 to just before the first delivery position P2, and the first delivery position P2. An ejection groove 24b connected to ejection means (not shown), which communicates with the through hole 23a, is formed.

Therefore, the label forming substrate M supplied to the cutting position P1 is suction-held by the suction groove 24a on the outer peripheral surface of the roll body 23 which rotates (rotates), and is held in the first delivery position P2. Transported to When the label forming base material M reaches the first delivery position P2, the through hole 23a is communicated with the discharge groove 24b after the communication with the suction groove 24a is cut off.
By the discharge action of 4b, air is discharged from the outer peripheral surface of the roll main body 23, and the label forming substrate M sucked and held on the outer peripheral surface of the roll main body 23 separates from the roll main body 23 and the outer periphery of a delivery drum 30 described later. The transfer drum 30 is forcibly pressed against the transfer surface and is suction-held on the outer peripheral surface of the delivery drum 30.

After the leading end portion of the label-forming base material M is delivered to the delivery drum 30 in this manner, the label-forming base material M is cut by the rotary cutter 21 and the cutting / conveying roll 22 to form the label L. Then, the formed label L is delivered to the delivery drum 30.

As shown in FIG. 2, the delivery drum 30 has an outer peripheral surface which is close to the outer peripheral surface of the cutting / conveying roll 22 at a first delivery position P2 and at the second delivery position P3. The cutting / conveying roll 22 is installed so as to be close to the outer peripheral surface of the cutting / conveying roll 22, and rotates (rotates) in a direction opposite to the cutting / conveying roll 22 at a higher peripheral speed than the cutting / conveying roll 22.

The delivery drum 30 is composed of a drum body 31 which is driven to rotate by driving means (not shown), and a fixing portion 33 with which the drum body 31 is slidably contacted. The surface is coated with Teflon or the like to ensure good slipperiness.

After the leading end portion of the label-forming base material M is delivered to the delivery drum 30 at the first delivery position P2 and before the label-forming base material M is cut, the peripheral speed is higher than that of the cutting / conveying roll 22. Although the label forming substrate M is pulled by the delivery drum 30, the delivery drum 30 is suction-held on the outer circumference of the delivery drum 30 because the outer circumference of the delivery drum 30 has good slipperiness as described above. The label forming substrate M can easily slide on the outer peripheral surface.
Therefore, no excessive tension is applied to the label-forming base material M before the label-forming base material M is delivered to the delivery drum 30 and cut off.
No tension wrinkles occur.

The drum main body 31 is formed with a large number of through-holes 32 opened to the outer peripheral surface thereof so as to be aligned at regular intervals in the circumferential direction and the width direction of the outer peripheral surface. Are open to the contact surface with the fixing portion 33 in a state where the plurality of through-holes 32 are connected to each other.

As shown in FIG. 3, the through hole 32 is provided in the label forming base material M delivered at the first delivery position P2.
(Label L) is composed of a suction / ejection hole 32a formed so as to correspond to a position in contact with the leading end of the label (L), and a suction hole 32b formed at other positions. The suction hole 32b is formed so as to be inclined at 30 degrees forward in the moving direction of the drum body 31 (forward in the moving direction of the label L) with respect to the radial direction of the drum body 31. It is formed along.

In the fixing portion 33, a suction groove communicating with the suction / discharge hole 32a and the suction hole 32b in a contact surface with the drum body 31 from a first delivery position P2 to a position short of a second delivery position P3. 33a and a discharge groove 33b communicating only with the suction and discharge hole 32a at the second delivery position P3 are formed, and the suction groove 33a and the discharge groove 33b are connected to suction means and discharge means (not shown), respectively.

Therefore, the label L delivered from the cutting and conveying means 20 at the first delivery position P2 is
Is transported to the second delivery position P3 while being suction-held on the outer peripheral surface of the drum body 31 by the suction action of
At the delivery position P3, the suction is temporarily released, and as described above, the suction discharge hole 32a communicates with the discharge groove 33b, so that air is discharged from the outer peripheral surface of the drum main body 31 through the suction discharge hole 32a. Thereby, the drum body 31
The leading end of the label L sucked and held on the outer peripheral surface is separated from the outer peripheral surface and is forcibly pressed against the outer peripheral surface of the sticking drum.

As described above, since the suction / discharge holes 32a are formed to be inclined 30 degrees forward in the moving direction of the drum body 31, the air discharged at the second delivery position P3 is as shown in FIG. As shown, the label L is discharged toward the front in the moving direction. Therefore, as shown in the figure, it is difficult for the air blown to the label L to move backward in the moving direction of the label L, and even if the label L to be delivered is a thin and rigid label, the delivery of the label L At this time, the delivery of the label L is performed so that the leading end of the label L does not become loose and passes on a straight line connecting the outer peripheral surface of the delivery drum 30 and the outer peripheral surface of the sticking drum 41. As a result, the label L is reliably delivered to the predetermined position of the sticking drum 41, and the leading end of the delivered label L is not sucked and held in a partially raised state.

In the labeling apparatus 1, the angle at which the suction and discharge holes 32a are formed (the discharge angle of air) is set to 30 degrees with respect to the radial direction of the delivery drum 30, but the angle at which the suction and discharge holes 32a are formed (the air discharge angle). Angle) may be appropriately set within the range of 20 to 60 degrees, more preferably 30 to 45 degrees. If the forming angle is smaller than 20 degrees, the sag preventing effect is not exhibited, and if the forming angle is larger than 60 degrees, the label L cannot be smoothly delivered to the attaching drum 41.

In the labeling apparatus 1, air is blown only to the leading end of the label L. However, it is also possible to blow air over the entire length from the leading end to the trailing end of the label L. However,
In that case, the through hole 32 corresponding to the leading end of the label L
Not only that, it is desirable that all the through holes 32 be inclined forward in the moving direction of the label L with respect to the radial direction of the delivery drum 30.

The label affixing means 40 is shown in FIGS.
As shown in the figure, a sticking drum 41 that sucks and holds the label L delivered at the second delivery position P3 on the outer peripheral surface and transports it to the sticking position P4, and preliminarily transfers the label L during the transportation by the sticking drum 41. A radiant heat heater (near infrared heater) 42 for heating, and an aluminum can C that transports the aluminum can C supplied by the can supply means 50 at the can supply position P5 to the can discharge position P6 so as to pass through the sticking position P4. A large number of metal mandrels 43 having an outer peripheral shape substantially the same as the inner dimensions of the mandrel 43, and radiant heat heaters (far-infrared heaters) 4 provided corresponding to the respective mandrels 43
4, a radiant heat heater (far-infrared heater) 45 fixedly installed between the can supply position P5 and the sticking position P4, and a guide member 46 for repressurizing the label L attached to the aluminum can C at the sticking position P4. It is composed of

The sticking drum 41 has a drum body 41a (see FIG. 2) which is driven to rotate by a driving means (not shown), similarly to the delivery drum 30 described above, and a fixing portion with which the drum body 41a slidably contacts. (Not shown), and the outer peripheral surface of the drum main body 41a is covered with an elastic member such as rubber.

Similarly to the delivery drum 30 described above, the drum main body 41a is formed such that a large number of suction holes 41b opened on the outer peripheral surface thereof are arranged at regular intervals in the circumferential direction and the width direction of the outer peripheral surface. (See FIG. 2), and a plurality of suction holes 41b constituting each row of holes in the width direction are open to the contact surface with the fixing portion in a state of communicating with each other.

In the fixing portion, a suction groove (not shown) communicating with the suction hole 41b is formed on a contact surface with the drum main body 41a from the second delivery position P3 to the sticking position P4. This suction groove is connected to suction means (not shown). Therefore, the label L delivered from the delivery drum 30 at the second delivery position P3 is conveyed to the sticking position P4 while being held by suction on the outer peripheral surface of the drum main body 41a.

The mandrel 43 is moved to the can supply position P5 and the sticking position P
The aluminum can C inserted at the can supply position P5 is transported to the sticking position P4, and rotated at the sticking position P4. The aluminum can C is moved by a predetermined distance along the outer peripheral surface of the attaching drum 41 while being pressed against the label L sucked and held on the outer peripheral surface of the attaching drum 41, so that the outer peripheral surface of the body of the aluminum can C is pressed. After the label L is attached to the aluminum can, the aluminum can C is transported to the can discharge position P6.

The radiant heater 44 includes a mandrel 43.
Are supported by the support members 43a of the mandrels 43 such that the heating surfaces thereof face the outer peripheral surfaces of the mandrels 43, respectively, and the can supply position P5 and the sticking position P4 together with the mandrels 43. And a circular orbit passing through the can discharge position P6.

The radiant heat heater 45 is provided at the can supply position P5.
The heating surface of the mandrel 43 is between
Is fixedly installed outside the mandrel 43 along the movement path of the mandrel 43 so as to face the outer peripheral surface of the mandrel 4.
The aluminum can C inserted into the tube 3 is heated from outside the movement path of the mandrel 43.

Therefore, during the period from the can discharge position P6 where the aluminum can C is not inserted into the mandrel 43 to the can supply position P5, the mandrel 43 is heated by the radiant heat heater 44, so that the temperature of the mandrel 43 is increased. At the can supply position P5, an aluminum can C is placed on the heated mandrel 43.
Is inserted, so that the heat of the mandrel 43 is
And the temperature of the aluminum can C is increased.

Next, while the aluminum can C is inserted from the can supply position P5 to the sticking position P4 while being inserted into the mandrel 43, the aluminum can C is directly heated from two directions by the radiant heaters 44 and 45. The temperature is further increased by
The aluminum can C is supplied to the sticking position P4 in a state where the temperature is raised to a predetermined sticking temperature.

Then, while the label L is applied to the aluminum can C fitted in the mandrel 43 at the application position P4 and then conveyed to the can discharge position P6, the label L is applied to the aluminum can C by the radiant heater 44. The heated label L is directly heated.

The can supply position P5 to the can discharge position P6
Until the mandrel 43 itself rotates,
The aluminum can C and the label L attached to the aluminum can C are not partially heated by the radiant heat heaters 44 and 45, and the aluminum can C and the label L are always uniformly heated.

The guide member 46 includes a pressure plate 46a formed by an elastic member such as rubber disposed outside the mandrel 43 along the rotation path between the sticking position P4 and the can discharge position P6. An aluminum can C to which the label L is attached at an attaching position P4 is constituted by a heater 46b for heating the pressing plate 46a.
Before reaching the can discharge position P6, the label L is pressed against the aluminum can C again by moving while rotating while being pressed against the heated pressure plate 46a. As described above, the label L is continuously heated by the radiant heater 44 moving together with the mandrel 43 between the sticking position P4 and the can discharging position P6.

As shown in FIG. 1, the can supply means 50 supplies a supply chute 51 for continuously sending out a large number of aluminum cans C, and supplies the aluminum can C sent by the supply chute 51 at a predetermined timing. The aluminum can C supplied to the can supply position P5 by the can supply means 50 is fitted into the mandrel 43 by a fitting mechanism (not shown).

As shown in FIG. 1, the can discharging means 60 includes a star wheel 61 for receiving the aluminum can C having the label L attached thereto at the attaching position P4 at a predetermined timing at the can discharging position P6, And a discharge chute 62 for discharging the aluminum can C received by the wheel 61. The aluminum can C conveyed to the can discharge position P6 by the mandrel 43 is extracted from the mandrel 43 by an unillustrated extraction mechanism. Is discharged by the can discharging means 60.

As described above, the labeling apparatus 1 employs a configuration in which the label L applied to the aluminum can C is re-pressed by the guide member 46 at the application position P4. Label L
Is not completely adhered to the aluminum can C, the label L can be firmly adhered to the aluminum can C by re-pressing thereafter.

In the labeling apparatus 1, the pressure plate 46a of the guide member 46 is heated by the heater 46b so that the pressure plate 46a is heated to a predetermined temperature. Even if an adhesion failure occurs during the bonding, the pressure failure is re-pressed by the pressurized plate 46a, so that the adhesion failure can be reliably eliminated. Therefore, it is not always necessary to completely adhere the label L to the aluminum can C at the sticking position P4.
Can be set lower. Thereby, when the label L is attached to the aluminum can C, the label L
Is no longer softened improperly by the heat of the aluminum can C, and the waving state of the label surface, which has conventionally been caused by the softening of the label when attaching the label to a metal can such as an aluminum can, is effective. Can be prevented.

Further, in the labeling apparatus 1, even when the label L is re-pressed on the outer peripheral surface of the body of the aluminum can C by the above-described guide member 46 between the sticking position P4 and the can discharging position P6, Since the label L is continuously heated by the radiant heater 44 provided separately to the mandrel 43, the label L can be re-heated by the guide member 46 without increasing the temperature of the pressure plate 46a. There is an effect that pressure can be efficiently performed. Further, in the labeling device 1, since the sticking position P4 and the pressing plate 46a are provided on the rotation orbit of the mandrel 43, the entire device is reduced in size and can be installed in a small space.

In this embodiment, the case is described in which the heat-sensitive adhesive label L formed of a thin polyethylene terephthalate film is adhered. However, in addition to the polyethylene terephthalate film, the label is formed of various synthetic resin films such as a polypropylene film. Needless to say, a heat-sensitive adhesive label can be used, and the present invention can be applied to the application of various films other than the label.

In this embodiment, the case in which the label L is attached to the aluminum can C has been described. However, the object to be attached is not limited to the aluminum can C. For example, various metal cans such as steel cans can be used. It is possible to apply for

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a labeling device (film sticking device) according to the present invention.

FIG. 2 is a schematic configuration diagram showing a cutting and conveying means and a delivery drum in the labeling device of the above.

FIG. 3 is a partially enlarged view showing a delivery drum in the same labeling device.

FIG. 4 is a diagram conceptually showing a state in which a label is transferred from a delivery drum to a sticking drum in the labeling device.

FIG. 5 is a front view showing a sticking means in the labeling device.

FIG. 6 is a schematic configuration diagram showing a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 labeling device 10 feed roller 20 cutting and conveying means 30 delivery drum 40 sticking means 41 sticking drum 43 mandrel 44, 45 radiant heat heater 46 guide member 46a pressure plate 46b heater 50 can supply means 60 can discharge means M label forming base material L Thermosensitive adhesive label P4 sticking position

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Tatsuya Masuda 1-5 Ishiharacho, Sakai-shi, Osaka F-ST Co., Ltd. F-term (reference) 4F211 AD03 AD05 AD09 AD12 AG06 AG07 AG08 AH55 SA07 SC01 SD01 SD12 SH06 SJ01 SJ06 SJ13 SJ15 SJ22 SJ23 SN02 SP07 SP26 SP38 SP40

Claims (2)

[Claims] 1. A film sticking apparatus for transferring a metal can inserted into a mandrel to a sticking position while heating, and sticking a heat-sensitive adhesive film conveyed to the sticking position to the metal can, wherein the sticking position is A pressurizing body is installed along the movement path of the subsequent mandrel, and the pressurizing body presses the film attached to the metal can at the sticking position against the metal can. Characteristic film sticking device. 2. The film sticking apparatus according to claim 1, further comprising a heating means for heating the pressure body.