WO2002014158A1

WO2002014158A1 - Film pasting device

Info

Publication number: WO2002014158A1
Application number: PCT/JP2000/005430
Authority: WO
Inventors: Yoshinori Hotta; Hisataka Takada
Original assignee: Fuji Seal, Inc.
Priority date: 1999-02-12
Filing date: 2000-08-11
Publication date: 2002-02-21
Also published as: JP2000229358A; JP4152029B2

Abstract

A labeling device for sticking a heat sensitive adhesive label on the outer peripheral surface of a drum part of a metal can, comprising a sticking drum (41) feeding a label (L) to a sticking position (P4) in the state of suckingly holding the label (L) to the outer peripheral surface thereof, mandrels (43) which feed aluminum cans (C) to be fed to a can feeding position (P5) to a sticking position (P4) in the state that the aluminum cans are inserted thereinto and are pressed against the label (L) suckingly held on the outer peripheral surface of the sticking drum (41) so as to stick the label (L) on the outer peripheral surface of the drum part of the aluminum cans (C), radiation heaters (44) moving together with the mandrels (43) and disposed so that a heating surface thereof is opposed to the outer peripheral surface of the mandrels (43), and radiation heaters (45) heating the aluminum cans (C) inserted into the mandrels (43) disposed on the outside of a moving route from a can feed position (P5) to a sticking position (P4) of the mandrels (43) along the moving route.

Description

Description Film film sticking device Technical field

TECHNICAL FIELD The present invention relates to a film sticking apparatus that transfers a heat-sensitive adhesive film conveyed to a sticking position to a heated metal can by transferring the metal can to a sticking position while heating the metal can. Background art

As a film sticking device for sticking a film to the outer peripheral surface of a body of a metal can such as an aluminum can or a steel can, there is a labeling device as shown in FIG. The labeling device 70 is a rotary cutter that cuts a long strip-shaped label-forming base material M made of a synthetic resin film into a predetermined length to form a label L and transports the label to a delivery position. The cutting / conveying means 71 comprising the conveying rolls 71b and the label L conveyed to the delivery position α by the cutting / conveying means 71 are received at the delivery position α, and the label L is sucked and held on the outer peripheral surface. With the sticking drum 72 transported to the sticking position β and the metal can C supplied at the can supply position r inserted, the metal can C passes from the can supply position r through the sticking position 0 to the can discharge position δ. The metal can C is heated during the transportation from the can supply position r to the application position i8, so that the heat-sensitive adhesive used for the label L is provided. Above the activation temperature of The temperature of the metal can C is raised to the application temperature, and at the application position β, the heated metal can C is pressed against the label L sucked and held on the outer peripheral surface of the application drum 72 to apply the label L to the body of the metal can C. It is attached to the outer peripheral surface. The mandrel 73 usually has a built-in heating means such as an electromagnetic induction coil and an electric heater. By heating the mandrel 73 itself by such heating means, the mandrel 73 is heated. the fitting inserted metal cans C, indirectly heated through the mandrel 7 3, and summer so as to warm ₀

By the way, as described above, when a heating means such as an electromagnetic induction coil or an electric heater is incorporated in the mandrel 73, power is supplied to the heating means when the mandrel 73 is replaced. Since it is necessary to reconnect the power supply line and the like each time, there is a problem that the replacement work of the mandrel 73 takes time and effort, and it is not possible to carry out the setup change efficiently. When the heating means is incorporated in the mandrel 73 as described above, the mandrel 73 is usually heated not from the outer surface side where the metal can C comes in direct contact but from the inner side. There is also a problem that it cannot always be said that heating is efficient.

Accordingly, an object of the present invention is to provide a film sticking apparatus that can easily replace a mandrel and efficiently heat a metal can by improving the arrangement of heating means. And Disclosure of the invention

In order to achieve the above object, the present invention provides a metal can inserted into a mandrel, while heating the metal can, transferring the metal can to a sticking position, and attaching the heat-sensitive adhesive film conveyed to the sticking position to the metal can. In the film sticking apparatus to be attached, the first radiant heat heater that moves together with the mandrel is disposed such that the heating surface faces the outer peripheral surface of the mandrel.

In the film sticking apparatus configured as described above, the first radiant heat heater that moves together with the mandrel has its heating surface facing the outer peripheral surface of the mandrel. As it is located outside the mandrel, even if the mandrel itself is replaced, it is not necessary to reconnect the wiring such as the power supply line connected to the first radiant heat heater, and the efficiency is reduced in a short time. The setup can be changed well.

In addition, since the outer peripheral surface of the mandrel that is in contact with the metal can is directly heated by the first radiant heater, the inside of the mandrel that does not contribute to the temperature rise of the metal can is hardly heated. After the can is inserted, the outer peripheral surface of the body of the metal can to which the label is attached is directly heated by the first radiant heat heater, so that the heat of the first radiant heat heater is applied to the metal can. It has the effect of being efficiently used for heating.

In particular, in the film sticking apparatus in which the second radiant heat for heating the metal can inserted into the mandrel is provided along the movement path of the mandrel to the sticking position. Since the outer peripheral surface of the body of the metal can fitted into the mandrel is simultaneously heated from different directions, the temperature of the metal can can be increased more efficiently. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a front view showing a preferred embodiment of a labeling device (film sticking device) according to the present invention, and FIG. 2 is a schematic configuration diagram showing cutting and conveying means and a delivery drum in the same labeling device. FIG. 3 is a partially enlarged view showing the delivery drum in the labeling device of the above, and FIG. 4 is a diagram conceptually showing a state of the transfer of the label from the delivery drum to the attaching drum in the same labeling device. Is a front view showing a sticking means in the labeling device of the above, and FIG. 6 is a schematic configuration diagram showing a conventional labeling device (film sticking device). BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

A labeling device で, which is an embodiment of the film sticking device shown in FIG. 1, has a long strip-shaped label-forming substrate M in which heat-sensitive adhesive labels (hereinafter, referred to as labels) of a predetermined length are continuously connected. An aluminum can (hereinafter referred to as an adherend) is transported to a predetermined labeling position P4 while forming a label of a predetermined length by sequentially cutting the label at a cutting position P1. The aluminum label is called an aluminum can.) The label is wound around the outer periphery of the body of C and is attached sequentially, and the label is attached to the inner surface of a thin and rigid wavy polyethylene terephthalate film with a thickness of about 12 wm. Printed and coated with heat-sensitive adhesive.

As shown in FIG. 1, FIG. 2, and FIG. 5, the labeling apparatus 1 has a pair of labels for continuously supplying a long label-forming base material M wound in a roll shape to a cutting position P1. Feed roller 10 and the label forming base material M supplied by the feed roller 10 are sequentially cut at a predetermined cutting pitch at a cutting position P 1 while being conveyed to a first delivery position P 2. Cutting / conveying means 20 for forming a label, and label attaching means 40 for attaching a label L to the outer peripheral surface of the body of the aluminum can C at the label attaching position P4; and the cutting / conveying means 20 The label drum cut from the label forming substrate M at the first delivery position P2 and delivered to the label attaching means 40 at the second delivery position P3, and the label drum means 40, Can supply means 50 for supplying the aluminum can C; Bell sticking means 4 0 Niyotsu label Mr Te are cans discharging section 6 0 Toka et configured to discharge aluminum cans C which is stuck.

As shown in FIG. 2, the cutting and conveying means 20 is provided by a rotary cutter 21 having a cutting blade 21 a attached to an outer peripheral surface thereof and a feed roller 10. The label forming base material M to be supplied is sucked and held on the outer peripheral surface, transported to the first delivery position P 2, and cut in order to sequentially cut the label forming base material M into a predetermined length by cooperation with the rotary cutter 21. Transport rolls 22.

As shown in the figure, the cutting / conveying roll 22 includes a roll body 23 that is rotationally driven by a driving unit (not shown), and a fixed portion with which the roll body 23 is slidably contacted. The outer peripheral surface of the roll body 23 has a plurality of through holes 23a formed at regular intervals in a circumferential direction thereof, and the fixing portion has a cut surface at a contact surface with the roll body 23. A suction groove 24 a connected to suction means (not shown) communicating with the through-hole 23 a from the position P 1 to just before the first delivery position P 2, and a first delivery position P 2 A discharge groove 24b connected to discharge means (not shown) is formed to communicate with the through hole 23a.

Accordingly, the label-forming base material M supplied to the cutting position P 1 is sucked and held on the outer peripheral surface of the rotating (rotating) roll body 23 by the suction action of the suction groove 24 a, and the first delivery is performed. It is transported to position P2. When the label-forming base material M reaches the first delivery position P2, the through hole 23a is disconnected from the suction groove 24a and then communicates with the discharge groove 24b, so the suction is temporarily released. After that, air is discharged from the outer peripheral surface of the roll main body 23 by the discharge action of the discharge grooves 24 b, and the label-forming base material M, which has been suction-held on the outer peripheral surface of the roll main body 23, is removed. The transfer drum 30 is forcibly pressed against the outer peripheral surface of the delivery drum 30 described later, 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 way, the label is formed by cutting the label-forming base material M by the rotary cutter 21 and the cutting / conveying roll 22. Is formed, formed la Bell L is delivered to delivery drum 30.

As shown in FIG. 2, the delivery drum 30 has an outer peripheral surface that is close to the outer peripheral surface of the cutting / conveying roll 22 at a first delivery position P2 and the label attaching means 4 at a second delivery position P3. Affixed with 0 The drum is installed so as to be close to the outer peripheral surface of the drum 1, and rotates (rotates) in the opposite direction to the cutting and conveying roller 22 at a higher peripheral speed than the cutting and conveying roller 22. . The delivery drum 30 is composed of a drum main body 31, which is driven to rotate by driving means (not shown), and a fixed portion 33 with which the drum main body 31 is slidably contacted. By applying Teflon coating or the like to the outer peripheral surface, good slipperiness is secured.

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 large delivery drum 30, the delivery drum 30 has good slipperiness as described above, so that the outer circumference of the delivery drum 30 is provided. The label-forming base material M sucked and held can easily slide on the outer peripheral surface. Therefore, no excessive tension is applied to the label-forming substrate M between the time when the label-forming substrate M is delivered to the delivery drum 30 and the time when the label-forming substrate M is cut, and the tension is applied to the formed label L. No wrinkles occur. The drum main body 3 1 is formed with a large number of through-holes 3 2 that are 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. The plurality of through-holes 32 are open to the contact surface with the fixing portion 33 in a state where they are communicated with each other.

As shown in FIG. 3, the through-hole 32 is formed by suction and discharge formed at a position where the through-hole 32 comes into contact with the leading end of the label-forming base material M (label L) delivered at the first delivery position P2. Hole 3 2a and other positions And the suction and discharge holes 32a are arranged on the front side in the moving direction of the drum body 31 with respect to the radial direction of the drum body 31 (the front side in the moving direction of the label L). The suction hole 32 b is formed so as to extend along the radial direction of the drum main body 31.

The fixing portion 33 includes a suction / discharge hole 32 a and a suction hole 32 on a contact surface with the drum main body 31 from a first delivery position P2 to a position just before a second delivery position P3. The suction groove 3 3a communicating with the suction groove 3 3a and the discharge groove 3 3b communicating only with the suction and discharge hole 3 2a at the second delivery position P3 are formed. 3b is connected to suction means and discharge means (not shown).

Therefore, the label L delivered from the cutting / transporting means 20 at the first delivery position P2 is sucked and held on the outer peripheral surface of the drum main body 31 by the suction action of the suction groove 33a. However, the suction is once released at the second transfer position P3, and as described above, the suction and discharge hole 32a communicates with the discharge groove 33b to form the suction and discharge hole 32a. Air is discharged from the outer peripheral surface of the drum body 3 を via the. As a result, the leading end of the label L sucked and held on the outer peripheral surface of the drum main body 31 is separated from the outer peripheral surface and is forcibly pressed against the outer peripheral surface of the sticking drum.

As described above, the suction / discharge holes 32 a are formed to be inclined 30 degrees toward the front in the moving direction of the drum body 31, so that the air discharged at the second delivery position P 3 Is discharged toward the front side in the moving direction of the label L as shown in FIG. Therefore, as shown in the figure, the air blown to the label L is hard to wrap around the rear side in the moving direction of the label L, and the label L to be delivered is a thin and rigid label. Also, during the delivery, the leading end of the label L does not become loose and the delivery drum Delivery of the label L is performed so as to pass on a straight line connecting the outer peripheral surface of 30 and the outer peripheral surface of the attaching drum 41. As a result, the label L is reliably delivered to the predetermined position of the sticking drum 41, and the delivered label is not sucked and held in a state where the leading end of the label is partially lifted.

In the labeling apparatus 1, the forming angle (air discharging angle) of the suction / discharge holes 32a is set to 30 degrees with respect to the radial direction of the delivery drum 30. The air discharge angle) may be appropriately set in the range of 20 to 60 degrees, more preferably 30 to 45 degrees. If the forming angle is smaller than 20 degrees, the sagging prevention 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 above, air is blown only at the leading end of the label L, but 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 such a case, not only the through hole 32 corresponding to the leading end of the label L but all the through holes 32 are located on the front side in the moving direction of the label L with respect to the radial direction of the delivery drum 30. It is desirable to tilt it.

As shown in FIGS. 1 and 5, the label affixing means 40 sucks and holds the label L delivered at the second delivery position P3 on the outer peripheral surface and transports the label L to the affixing position P4. Radiant heat heater (near-infrared heater) that preliminarily heats the label L during transport by the drum 41 and the sticking drum 4〗

42, and the aluminum can C supplied by the can supply means 50 at the can supply position P5 is transported 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 of approximately the same dimensions as the above, radiant heat heaters (far-infrared heaters) 44 provided for each mandrel 43, and the can supply position P5 Pasting position Consists of a radiant heat heater (far-infrared heater) 45 fixedly installed up to P4, and a guide member 46 for re-pressing the label L affixed to the aluminum can C at the affixing position P4. The radiant heat heater 44 corresponds to the first radiant heat heater of the present invention, and the radiant heat heater 45 corresponds to the second radiant heat heater of the present invention.

Similar to the delivery drum 30 described above, the sticking drum 41 is rotated by a driving means (not shown). The drum main body 41 a (see FIG. 2) and the drum main body 41 a slides. The outer peripheral surface of the drum body 4a is covered with an elastic member such as rubber.

Similarly to the delivery drum 30 described above, the drum main body 41 a is arranged such that a large number of suction holes 41 b 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. It is formed (see FIG. 2), and a plurality of suction holes 41 b constituting each row of holes in the width direction are open to the contact surface with the fixing portion in a state where they are communicated with each other.

The fixing portion has a suction groove (not shown) formed in a contact surface with the drum main body 41 a and communicating with the suction hole 4〗 b from the second delivery position P 3 to the sticking position P 4. 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 transported to the application position P4 while being suction-held on the outer peripheral surface of the drum body 41a.

The mandrel 43 is configured to move while rotating on a circular orbit passing through a can supply position P5, a sticking position P4, and a can discharge position P6 by the rotational driving force of a driving means (not shown). The aluminum can C inserted at the can supply position P5 was transported to the attaching position P4, and at the attaching position P4, the rotating aluminum can C was suction-held on the outer peripheral surface of the attaching drum 41. By moving a predetermined distance along the outer peripheral surface of the attaching drum 41 while pressing against the label L, the label is attached to the outer peripheral surface of the body of the aluminum can C, and then the aluminum can C is moved to the can discharge position. The radiant heat heater 44, which is to be transported to P6, has its respective mandrel so that its heating surface faces the outer peripheral surface of each mandrel 43 inside the rotational orbit of the mandrel 43. 43 are supported by the supporting members 4 3a, respectively, and move along a circular orbit passing through the can supply position P5, the sticking position P4, and the can discharge position P6 together with each mandrel 43. I have.

The radiant heat heater 45 is disposed along the movement path of the mandrel 43 so that its heating surface faces the outer peripheral surface of the mandrel 43 between the can supply position P5 and the sticking position P4. The aluminum can C inserted into the mandrel 43 is heated from outside the moving path of the mandrel 43.

Therefore, from the can discharge position P6 where the aluminum can C is not fitted to the mandrel 43 to the can supply position P5, the radiant heater 44 heats the mandrel 43 so that the mandrel 43 is heated. 4 3 is heated, and at the can supply position P5, the aluminum can C is inserted into the heated mandrel 43 to transfer the heat of the mandrel 43 to the aluminum can C. Is heated.

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

The aluminum can inserted into the mandrel 43 at the sticking position P 4 After the label L is applied to C, the label L applied to the aluminum can C is directly heated by the radiant heater 44 during the transport to the can discharge position P6.

Since the mandrel 43 itself rotates between the can supply position P5 and the can discharge position P6, the aluminum can C and the label L affixed to the aluminum can C are radiant heaters 44, There is no partial heating by 45, and aluminum can C and label L are always heated uniformly.

The guide member 46 is formed of an elastic member such as rubber disposed outside the mandrel 43 along the rotation path of the mandrel 43 between the sticking position P4 and the can discharging position P6. The pressurized plate 46a and a heater 46b for heating the pressurized plate 46a, and the aluminum can C to which the label L is stuck at the sticking position P4 is a can. Before reaching the discharge position P6, the label L is re-pressurized 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 heat heater 44 moving together with the mandrel 43 between the sticking position P4 and the can discharging position P6.

As described above, when the label L attached to the aluminum can C at the attaching position P4 is re-pressed by the guide member 46, the label L is applied to the aluminum can C at the attaching position P4. Even if the label is not completely adhered, the label can be firmly adhered to the aluminum can C by the subsequent re-pressing. In addition, by re-pressing the label L with the guide member 46 after the label L is attached, it is possible to effectively prevent the occurrence of a wavy state on the surface due to the softening of the thin, rigid label. It is possible to lower the temperature of the mandrel 43 itself that heats the aluminum can C As shown in FIG. 1, the can supply means 50 includes a supply chute 51 for continuously sending out a large number of aluminum cans C, and a predetermined number of aluminum cans C delivered by the supply chute 51. The aluminum can C supplied to the can supply position P5 by the can supply means 50 includes a star wheel 52, which is supplied to the can supply position P5 at the timing shown in FIG.揷 It is inserted into the mandrel 43 by the mechanism.

As shown in FIG. 1, the can discharging means 60 receives the aluminum can C to which the label is attached at the attaching position P4 at a predetermined timing at the can discharging position P6. 1 and a discharge shoot 62 that discharges the aluminum can C received by the star wheel 61.The aluminum can C transported to the can discharge position P 6 by the mandrel 43 is After being extracted from the mandrel 43 by an unillustrated extraction mechanism, it is discharged by the can discharge means 60.

In the labeling device 1 configured as described above, as described above, the radiant heat heater (first radiant heat heater) 44 moving together with the mandrel 43, and the heating surface thereof is in contact with the outer peripheral surface of the mandrel 43. A configuration is adopted in which the mandrel 43 is placed outside the mandrel 43 so that they face each other, so even if the mandrel 43 itself is replaced, it is necessary to reconnect the wiring such as the power supply line of the radiant heat heater 44. The setup can be changed efficiently in a short time, and the mandrel 43 can be continuously heated even when the rotation of the mandrel 43 is stopped. Can be resumed.

Also, the outer peripheral surface of the mandrel 43, which comes into contact with the aluminum can C, is directly heated by the radiant heater 44, which is provided outside the mandrel 43, contributing to the temperature rise of the aluminum can C. The inside of the mandrel 43 is not easily heated, and after the aluminum can C is inserted into the mandrel 43, the outer peripheral surface of the body of the aluminum can C to which the label L is attached is radiated. Heater 4 to 4 As a result, the heat of the radiant heat heater 44 is efficiently used for raising the temperature of the aluminum can C.

Further, in the labeling device 1, a radiant heat heater (second radiant heat heater) 45 provided outside the mandrel 43 along the movement path of the mandrel 43 from the can supply position P5 to the sticking position P4 is provided. The radiant heat heaters (first radiant heat heaters) 44, which are individually arranged corresponding to the respective mandrels 43, are inserted into the mandrel 43 inside the movement path of the mandrel 43. The heated aluminum can C is heated from the inside and outside of the movement path at the same time, so the heating efficiency for the aluminum can C is extremely high. The label L can be supplied to the body of the aluminum can C from the sticking position P4 to the can discharge position P6, as shown in the labeling device 1. Even when re-pressing the outer peripheral surface Runode can be heated label L by radiant heat heater 4 4 provided separately for each mandrel 4 3, can be performed more efficiently re-pressurization of the label L by the guide member 4 6.

In this embodiment, far-infrared heaters are used as the radiant heat heaters 44 and 45. However, the present invention is not limited to this. 3. Various heating means capable of heating aluminum can C and the like can be used.

Further, in this embodiment, the case where the heat-sensitive adhesive label L formed of a thin polyethylene terephthalate film is adhered has been described. However, in addition to the polyethylene terephthalate film, various other materials such as a polypropylene film may be used. It is possible to use heat-sensitive adhesive labels formed by synthetic resin films. Needless to say, the present invention can be applied to attaching.

In this embodiment, the case where the label L is attached to the aluminum can C has been described. However, the adherend is not limited to the aluminum can C. For example, it is applicable to various metal cans such as steel cans. It is possible to do. Industrial applicability

As described above, the film sticking apparatus according to the present invention is useful for sticking a heat-sensitive adhesive film to the outer peripheral surface of the body of a metal can such as an aluminum can or a steel can. Suitable when the mandrel is frequently changed according to the metal can.

Claims

The scope of the claims

1. A film sticking apparatus for transferring a metal can inserted into a mandrel to a sticking position while heating, and sticking the heat-sensitive adhesive film transferred to the sticking position to the metal can.

A film sticking apparatus, wherein a first radiant heat heater that moves together with the mandrel is disposed such that a heating surface thereof faces an outer peripheral surface of the mandrel.

2. The film according to claim 1, wherein a second radiant heat heater for heating the metal can inserted into the mandrel is provided along a moving path of the mandrel to the sticking position. Sticking device.